JP2002011396A - Cartridge-type coating system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve work efficiency during cleaning by cleaning coating adherent to the coating housing chamber of a cartridge, a feed tube, etc. surely in a short time. SOLUTION: In the cartridge 31, a cleaning fluid passage 43 communicating with the coating housing chamber 36 and a cleaning fluid valve 45 for cutting off or release the passage 43 are provided. On a packing table 52, a packing valve 61 which supplies/discharges the coating to/from the chamber 36, an extrusion thinner supply/discharge valve 86 which supplies/discharges extrusion thinner to extrude the coating to an extrusion thinner housing chamber 37, and a cleaning fluid supply valve 101 which supplies cleaning fluid to the chamber 36 through the passage 43 are provided. By opening the packing valve 61, the cleaning fluid supply valve 101, and the cleaning fluid valve 45, the cleaning fluid from the valve 101 is introduced into the chamber 36 through the passage 43 and discharged from the feed tube 34 so that the coating adherent to these is cleaned.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cartridge type coating system in which, for example, a cartridge for each color is exchanged with a coating machine for mounting and coating.

[0002]

2. Description of the Related Art In general, a coating system for coating an object to be coated such as an automobile body is composed of a coating machine such as a painting robot and a coating machine attached to the coating machine. This coating system can perform automatic coating by operating the coating work machine according to a program and spraying paint from the coating machine. Recently, it has been desired that this type of coating system be able to reduce the amount of paint and thinner used for washing, which are discarded at the time of color changing work, and to be able to cope with many paint colors.

Therefore, as a coating system corresponding to the reduction of waste paint and thinner and the increase of coating color, a cartridge type coating system using a cartridge (for example, Japanese Patent Laid-Open No.
No. 29446). This cartridge type coating system is configured such that a cartridge filled with a paint of each color is replaced and attached to a coating machine every time a vehicle body is painted.

In this cartridge type coating system, a housing having a coating machine mounting portion for mounting the coating machine on the front side and a cartridge mounting portion for mounting the cartridge on the rear side, and a rotating shaft mounted on the coating machine mounting portion of the housing are provided. And a coating machine comprising a rotary atomizing head provided on a rotary shaft located in front of the air motor. Further, a feed tube insertion hole having a front end opening to the rotary atomizing head and a rear end opening to the cartridge mounting portion of the housing is formed in the rotation shaft of the air motor constituting the coating machine in the axial direction.

Furthermore, the cartridge type coating system according to the above-mentioned Japanese Patent Application Laid-Open No. 8-229446 has a separate cartridge for each color which is replaced and attached to the cartridge attachment portion of the housing. This cartridge is formed by a cylinder filled with paint and a body having a feed tube extending in the axial direction from the tip of the cylinder. The cartridge is configured such that the cylinder is exchangeably mounted on the cartridge mounting portion of the housing, and a feed tube is inserted into the feed tube insertion hole.

In the cartridge type coating system disclosed in Japanese Patent Application Laid-Open No. 8-229446, a movable partition which defines a paint chamber and an extrusion air chamber which communicates the inside of a cylinder with a feed tube is provided in the body. A cartridge-side extrusion air passage for supplying extrusion air to the air storage chamber is provided. In addition, the housing
A housing-side pushing air passage communicating with the cartridge-side pushing air passage is provided. This allows the housing-side extrusion air passage and the cartridge-side extrusion air passage to displace the movable partition by flowing the extrusion air toward the extrusion air storage chamber, thereby moving the paint in the paint storage chamber from the feed tube to the rotary atomizing head. It is configured to flow out.

In the cartridge type coating system configured as described above, a paint color cartridge to be used for coating is selected from each color cartridge, and this cartridge is mounted on the cartridge mounting portion of the housing. Then, by appropriately supplying air to the extrusion air storage chamber of the cartridge, the paint in the paint storage chamber of the cartridge is discharged from the feed tube toward the rotary atomizing head. Thus, the rotary atomizing head sprays the paint toward the workpiece.

Further, when performing color change, it is possible to perform color change without discarding paint and thinner simply by replacing the cartridge with a cartridge filled with paint of another color.

On the other hand, the cartridge removed from the housing by the color change operation after the painting operation is completed is removed from the housing and returned to the mounting table because the remaining amount of the paint in the paint storage chamber is reduced. Is filled.

[0010]

By the way, in the cartridge type coating system according to the prior art described above, by preparing a cartridge for each color, even when changing colors, the cartridge is simply replaced with a cartridge of another color. The color change can be performed without washing the inside of the cartridge cylinder or the inside of the feed tube.

However, in the above-mentioned cartridge type coating system, the coating operation may be stopped for a long period of time in order to perform inspection work or repair work of the coating line. In this case, it is necessary to clean the inside of the cylinder of the cartridge and the inside of the feed tube in order to prevent the paint filled in the cartridge from separating or the paint from drying and sticking.

In this case, since the cartridge type coating system according to the prior art is not provided with a function for cleaning the cartridge, the operator must manually clean the cartridge, and the cleaning operation is troublesome. There is a problem.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art. It is an object of the present invention to be able to surely wash a paint adhered to a cartridge or the like in a short time and to improve the working efficiency at the time of washing. It is an object of the present invention to provide a cartridge type coating system capable of performing the above-mentioned operations.

[0014]

In order to solve the above-mentioned problems, a cartridge type coating system according to the first aspect of the present invention includes a coating machine for spraying a coating material, and a coating machine which is detachably attached to the coating machine and is internally provided. The apparatus includes a cartridge for supplying the stored paint to the coating machine, and a paint filling device for detachably mounting the cartridge and filling the empty cartridge with the paint.

The first aspect of the present invention is characterized in that the cartridge includes a cylinder, a body having a feed tube extending from the cylinder, and a paint chamber communicating with the feed tube inside the cylinder of the body. A movable partition wall defined in an extruding liquid storage chamber into which the extruding liquid flows in and out; and a paint supply chamber for supplying paint to a coating machine from a paint storage chamber provided in the body via a paint passage in a feed tube. A normally-closed paint valve that opens when filling paint into the container, an extruding liquid passage for flowing in and out the extruding liquid into and out of the extruding liquid storage chamber, a cleaning fluid passage for supplying a cleaning fluid to the coating liquid storage chamber, and the cleaning A normally closed cleaning fluid valve provided in the fluid passage and opening the cleaning fluid passage when supplying the cleaning fluid to the paint storage chamber. Further, the paint filling device may be a filling stand on which the cartridge is mounted when filling the paint accommodating chamber of the cartridge with the paint, and the paint filling valve may be connected to the filling stand and the paint valve may be opened. A filling valve for filling the paint chamber of the cartridge with the paint through a paint passage in the feed tube; and an extruding liquid chamber of the cartridge connected to the filling table and provided with the paint valve open. An extruding liquid supply / discharge valve for supplying and discharging the extruding liquid through the extruding liquid passage; and a cleaning fluid passage provided through the washing fluid passage when the washing fluid valve is opened while being connected to the filling table. The cleaning fluid supply valve supplies a cleaning fluid to the paint storage chamber.

[0016] With this configuration, when painting the paint filled in the cartridge, the cartridge used for painting is removed from the filling stand of the paint filling device, and the cartridge is attached to the painting machine. In this state, the extruding liquid is supplied to the extruding liquid storage chamber of the cartridge.
As a result, the movable partition wall is displaced toward the feed tube, so that the paint in the paint chamber is supplied from the feed tube to the coating machine and is sprayed from the coating machine.

Here, during the painting operation, the paint in the paint chamber attempts to flow out of the cleaning fluid passage of the cartridge to the outside. However, since the cleaning fluid valve normally closes the cleaning fluid passage, it is possible to prevent the paint from leaking from the cleaning fluid passage.

Next, when the cartridge is to be filled with paint, the cartridge is removed from the coating machine and attached to the filling stand of the paint filling device. In this state, the extruding liquid supply / discharge valve discharges the extruding liquid from the extruding liquid storage chamber. When the filling valve communicates the paint supply source with the feed tube, the paint can be sucked into the paint chamber through the paint passage in the feed tube.

If there is a waiting time before the next painting operation, the cartridge filled with the paint is left attached to the filling table, and the filling valve connects the paint supply source side to the feed tube. State. In this state, the push-out liquid supply / discharge valve supplies the push-out liquid to the push-out liquid storage chamber of the cartridge, discharges the paint in the paint storage chamber via the movable partition, and returns the paint to the paint supply source side. In addition, the extruding liquid supply / discharge valve discharges the extruding liquid from the extruding liquid storage chamber to suck the paint again into the coating liquid storage chamber. In the coating standby state, the extruding liquid supply / discharge valve repeats the supply / discharge operation (breathing operation) of the paint, thereby preventing the pigment in the paint from separating and settling.

Further, when cleaning the paint accommodating chamber or the like of the cartridge, the cartridge is removed from the coating machine and attached to the filling stand of the paint filling device. In this state, the cleaning fluid supply valve supplies the cleaning fluid to the paint storage chamber of the cartridge, and the cleaning fluid flows from the paint storage chamber to the feed tube, thereby attaching to the paint storage chamber and the feed tube. Paint can be washed.

According to the second aspect of the present invention, the filling valve of the paint filling device is opened when the paint from the paint supply source is supplied to the paint storage chamber of the cartridge or when the paint in the paint storage chamber is returned to the paint supply source. And a waste liquid discharge valve that opens when the cleaning fluid is supplied to the paint storage chamber of the cartridge.

With this configuration, when filling the cartridge with the paint, the cartridge is attached to the filling table of the paint filling device. In this state, when the paint supply / discharge valve is opened, the paint can be supplied from the paint supply source to the paint storage chamber of the cartridge, or the paint can be discharged from the paint storage chamber and returned to the paint supply source. On the other hand, when the waste liquid discharge valve opens to wash the cartridge,
The cleaning fluid and waste paint supplied to the paint chamber of the cartridge are discharged through a paint passage or the like in the feed tube.

According to the third aspect of the present invention, the extruding liquid supply / discharge valve of the paint filling apparatus includes an extruding liquid supply valve that opens when supplying the extruding liquid to the extruding liquid storage chamber of the cartridge, and an extruding liquid storage valve of the cartridge. And an extruding liquid discharge valve that opens when the extruding liquid is discharged from the chamber.

With this configuration, if there is a waiting time before the next painting operation, the cartridge filled with the paint is left attached to the filling table. In this state, when the extrusion liquid supply valve is opened, the extrusion liquid is supplied to the extrusion liquid storage chamber of the cartridge.
The extruded liquid can extrude the paint in the paint chamber through the movable partition. On the other hand, when the extrusion liquid discharge valve is opened, the extrusion liquid is discharged from the extrusion liquid storage chamber of the cartridge, so that the paint from the paint supply source can be sucked into the paint storage chamber together with the discharge of the extrusion liquid.

According to the fourth aspect of the present invention, the cleaning fluid supply valve of the paint filling device includes a cleaning thinner supply valve for supplying a cleaning thinner to the paint chamber of the cartridge and a cleaning for supplying cleaning air to the paint chamber of the cartridge. It consists of at least one of the air supply valve.

With this configuration, for example,
If one cartridge is used for multiple types of paint,
When the painting line is to be stopped for a long period of time, it is necessary to clean the cartridge. Therefore, the cartridge is mounted on the filling table of the paint filling device. When the cleaning air supply valve is opened in this state, the cleaning air is supplied to the paint storage chamber of the cartridge, and the paint remaining in the paint storage chamber, the paint passage in the feed tube, and the like can be pushed out and discharged. On the other hand, when the cleaning thinner supply valve is opened, the cleaning thinner is supplied to the paint accommodating chamber of the cartridge, and the paint adhering to the paint accommodating chamber, the feed tube and the like can be washed.

According to the fifth aspect of the present invention, the push-out liquid passage and the cleaning fluid passage of the cartridge are provided as separate passages in the body.

With this configuration, it is possible to prevent the cleaning fluid flowing through the cleaning fluid passage from being mixed with the extrusion liquid flowing through the extrusion liquid passage.

According to the sixth aspect of the present invention, the push-out liquid passage and the washing fluid passage of the cartridge have a common opening which is opened in common on the outer surface side of the body, and the washing fluid valve pushes the common opening through the push-out liquid passage. It is formed as a switching valve for switching to the cleaning fluid passage.

With this configuration, when filling the cartridge with the paint, the cartridge is attached to the filling stand of the paint filling device. In this state, when the switching valve switches the common opening to the extruded liquid passage, the common opening communicates with the extruded liquid storage chamber of the cartridge via the extruded liquid passage, so that the extruded liquid flows into the extruded liquid storage chamber.
Can spill. On the other hand, when the switching valve switches the common opening to the washing fluid passage, the common opening communicates with the paint accommodating chamber of the cartridge via the washing fluid passage. The paint adhered to the chamber, the feed tube and the like can be washed.

According to the seventh aspect of the present invention, the cleaning fluid valve of the cartridge is opened when the cleaning fluid flows toward the paint chamber through the cleaning fluid passage, and the paint flows from the paint chamber to the feed tube. The valve is formed as a check valve that closes when flowing.

[0032] With this configuration, the check valve is mounted on the filling table of the paint filling device and opens when the cleaning fluid flows toward the paint chamber through the cleaning fluid passage. As a result, the cleaning fluid flows into the paint storage chamber, and the paint adhered to the paint storage chamber and the like can be washed. On the other hand, when the paint in the paint chamber is discharged from the feed tube, the check valve closes to prevent the paint in the paint chamber from flowing backward through the cleaning fluid passage. Thus, the check valve can prevent the paint from leaking out of the cleaning fluid passage.

According to the eighth aspect of the present invention, the paint accommodating chamber of the cartridge is formed as a substantially circular space, and the cleaning fluid passage of the cartridge is opened at a position eccentric to the inner peripheral surface of the paint accommodating chamber in a tangential direction. And that

With this configuration, when the cleaning fluid is supplied from the cleaning fluid passage to the paint storage chamber, the cleaning fluid is opened tangentially to the inner peripheral surface of the paint storage chamber. A swirling flow is formed in the accommodation room. Thereby, the paint in the paint containing chamber can be efficiently washed by the swirling cleaning fluid.

According to the ninth aspect of the present invention, at least one of the bottom surface of the paint storage chamber and the movable partition of the cartridge has the bottom surface of the paint storage chamber when the movable partition is displaced toward the feed tube. A gap forming body for ensuring a gap through which the cleaning fluid flows is provided between the movable partition and the movable partition.

With this configuration, the movable partition can be displaced toward the feed tube to reduce the size of the washing portion of the paint chamber. At this time,
Since the gap forming body secures a gap suitable for cleaning between the bottom surface of the paint chamber and the movable partition, the cleaning operation can be performed efficiently.

According to the tenth aspect of the present invention, there is provided a painting work machine to which the painting machine is attached when performing the painting work.
The coating working machine is provided with a working machine-side extruding liquid passage communicating with the cartridge-side pushing liquid passage, and the working machine-side extruding liquid passage supplies the extruding liquid toward the cartridge attached to the coating machine. The configuration is such that it is connected to the extrusion liquid supply device.

With this configuration, when painting is performed, a cartridge filled with paint is attached to a painting machine. Then, the extruded liquid from the extruded liquid supply device supplies the extruded liquid to the extruded liquid storage chamber via the extruded liquid passage on the coating machine side and the extruded liquid passage on the cartridge side. As a result, the movable partition is displaced to the feed tube side, and the paint in the paint storage chamber is pressed by the movable partition and is discharged from the feed tube toward the rotary atomizing head. The coating can be carried out.

The cartridge type coating system according to the eleventh aspect of the present invention is characterized in that a common opening provided in the cartridge on the outer surface side of the cylinder and an extruding liquid passage connecting the common opening to the extruding liquid storage chamber. A cleaning fluid passage connecting the common opening and the paint storage chamber; and a switching valve for switching the common opening between an extruding liquid passage and a cleaning fluid passage. In addition, the paint filling device has an inflow side connected to the extruding liquid supply / discharge valve and the cleaning air supply valve and an outflow side connected to the filling table, and selects the extruding liquid supply / discharge valve and the cleaning air supply valve. It has a selection valve connected to the common opening of the cartridge.

With this configuration, when filling the cartridge with the paint, the cartridge is attached to the filling stand of the paint filling device. In this state, when the switching valve switches the common opening to the extruding liquid passage, the common opening communicates with the extruding liquid storage chamber of the cartridge via the extruding liquid passage. This allows the extruded liquid from the extruded liquid supply / discharge valve to flow into and out of the extruded liquid storage chamber.

On the other hand, when the switching valve switches the common opening to the washing fluid passage, the common opening communicates with the paint accommodating chamber of the cartridge via the washing fluid passage. Thus, the cleaning air from the cleaning air supply valve can be supplied to the paint storage chamber, and the paint in the paint storage chamber and the feed tube can be discharged. Further, by supplying the extruding liquid from the extruding liquid supply / discharge valve to the paint accommodating chamber as a cleaning fluid, the extruded liquid can wash the paint adhered to the paint accommodating chamber, the feed tube, and the like.

A feature of the cartridge type coating system according to the twelfth aspect is that a gripping device for gripping the cartridge between the paint filling device and the coating machine includes a gripper for gripping the cartridge, and a cartridge for gripping the cartridge by the gripper. And a cleaning fluid passage on the gripper side connected to the cleaning fluid passage on the cartridge side when the cleaning fluid passage on the gripper side is provided upstream of the cleaning fluid passage on the gripper side. The configuration is such that it is connected to the cleaning fluid supply valve.

With this configuration, the gripping device can grip and remove the cartridge attached to the coating machine with the gripping tool, and attach the cartridge to the filling table of the paint filling device. When cleaning the paint chamber or the like of the cartridge, the cartridge is held by the holding tool. This allows
Since the cleaning fluid passage on the gripper side is connected to the cleaning fluid passage on the cartridge side, the cleaning fluid from the cleaning fluid supply valve passes through the cleaning fluid passage on the gripper side and the cleaning fluid passage on the cartridge side. The paint supplied to the paint storage chamber and attached to the paint storage chamber, the feed tube, and the like can be washed.

According to the thirteenth aspect of the present invention, there is provided a gripping device for gripping the cartridge between the coating machine and the paint filling device, and the gripping device supplies pilot air to the cleaning fluid valve when the cartridge is gripped. The pilot air passage was provided.

With this configuration, the gripping device can grip and remove the cartridge attached to the coating machine, and attach the cartridge to the filling table of the paint filling device. When cleaning the paint chamber or the like of the cartridge, the cartridge is held by the holding device. Accordingly, when the pilot air is supplied to the cleaning fluid valve of the cartridge via the pilot air passage provided in the gripping device, the cleaning fluid valve can be opened to supply the cleaning fluid to the paint storage chamber, The paint adhered to the paint storage chamber, the feed tube and the like can be washed by the washing fluid.

[0046]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a cartridge type coating system provided with a coating robot and a rotary atomizing head type coating apparatus will be described in detail as an example of a cartridge type coating system according to an embodiment of the present invention.

FIG. 1 to FIG. 16 show a first embodiment of the present invention. Reference numeral 1 denotes a painting robot serving as a painting work machine. The painting robot 1 performs a painting operation using a rotary atomizing head type painting apparatus 11 described later. The painting robot 1 includes a base 2 and the base 2.
Vertical arm 3 rotatably and swingably provided on the upper side
A horizontal arm 4 swingably provided at the tip of the vertical arm 3, and a wrist 5 provided at the tip of the horizontal arm 4
This is roughly configured.

Numeral 11 denotes a rotary atomizing head type coating device (hereinafter referred to as a coating device 11) provided on the coating robot 1. The coating device 11 is, as shown in FIG.
2, feed tube insertion holes 15, 22, coating machine 16,
It is roughly constituted by a cartridge 31 and the like.

12 is, for example, PTFE, PEEK, PE
The housing 12 is formed of a high-performance resin material (engineering plastic) such as I, POM, PI, and PET, and is attached to the tip of the wrist 5.
Is composed of a neck portion 12A detachably attached to the tip of the wrist 5 of the painting robot 1, and a head portion 12B integrally formed at the tip of the neck portion 12A.

Here, a coating machine mounting portion 13 is formed in a concave cylindrical shape in front of the head portion 12B.
On the rear side of B, a cartridge mounting portion 14 is formed in a concave cylindrical shape. Further, the bottom 1 of the cartridge mounting portion 14
4A, a female connecting portion 14B and a convex portion 14 are provided as shown in FIG.
C is separately formed, and a male connecting portion 33A of a cylinder 33 described later is fitted to the female connecting portion 14B, and the convex portion 14C is fitted to a female connecting portion 33B of the cylinder 33. The female connecting portion 14B and the convex portion 14C of the cartridge mounting portion 14 are used when the cylinder 33 is mounted on the cartridge mounting portion 14.
The cylinder 33 is positioned in the circumferential direction.

Reference numeral 15 denotes a housing side feed tube insertion hole provided in communication between the coating machine mounting portion 13 and the cartridge mounting portion 14. The housing side feed tube insertion hole 15 has a small diameter feed tube on the front side. It becomes the insertion portion 15A, and the rear side is a conical reduced diameter portion 15B whose diameter is reduced in a conical shape. Here, the feed tube insertion portion 15A is formed coaxially with a coating machine side feed tube insertion hole 22 described later. Also, the conical reduced diameter portion 15
In B, a conical convex portion 33D of a cylinder 33 described later comes into contact with and fits therewith and positions it axially and radially.

Reference numeral 16 denotes a coating machine mounting portion 13 of the head portion 12B.
As shown in FIG. 2, the coating machine 16 is rotated by the air motor 17 including a motor case 17A, a rotating shaft 17B, an air turbine 17C, and an air bearing 17D. A rotary atomizing head 18 for atomizing the supplied paint by centrifugal atomization and atomizing the paint toward the object to be coated, and a shaping air ring 19 provided on the front end side of the air motor 17. In addition, the shaping air ring 19 includes
A large number of shaping air ejection holes 19A, 1
9A (only two are shown) is drilled forward. The shaping air ejection hole 19A ejects shaping air toward the discharge end of the rotary atomizing head 18 to form a pattern of the paint particles discharged from the rotary atomizing head 18.

Reference numeral 20 denotes a high-voltage generator provided on the neck 12A of the housing 12. The high-voltage generator 20 is constituted by, for example, a Cockcroft circuit and outputs a voltage supplied from a power supply device (not shown). The voltage is raised to -60 to -120 kV. The output side of the high-voltage generator 20 is electrically connected to, for example, the air motor 17, so that the high-voltage generator 20
A high voltage is applied to the rotary atomizing head 18 via the rotary shaft 17B of 7 to directly charge the paint.

A plurality of air passages 21 are provided on the neck 12A of the housing 12 and connected to a control air source (not shown). Each of the air passages 21 is a turbine air passage for controlling the air motor 17. Although it supplies bearing air, brake air, shaping air for forming a spray pattern of paint, and the like, this embodiment typically shows only one air passage.

Reference numeral 22 denotes a rotating shaft 1 constituting the air motor 17.
7B, the feed tube insertion hole 2 is provided through the coating machine side feed tube.
2 is the feed tube insertion hole 1 on the housing side.
5 is open to the feed tube insertion portion 15A, and the distal end side is opened to the rotary atomizing head 18. Further, the feed tube insertion hole 22 on the coating machine side is formed coaxially with the feed tube insertion portion 15A of the housing side feed tube insertion hole 15. And feed tube insertion hole 1
5, 22 are feed tubes 3 of the cartridge 31.
4 is removably inserted.

Reference numeral 23 denotes a housing-side extruding thinner passage which forms an extruding liquid passage on the working machine side provided in the housing 12. The extruding thinner passage 23 extends in the neck portion 12A in the axial direction and is located at the position of the female connecting portion 14B. To form an L-shape bent rearward. And the extrusion thinner passage 2
3 has one end connected to an extrusion thinner supply device (not shown) for supplying an extrusion thinner toward the cartridge 31, and the other end opening to the bottom of the female connection portion 14 </ b> B of the cartridge mounting portion 14. The bent portion of the housing-side push-out thinner passage 23 corresponds to the valve body 2 of the thinner valve 29 described later.
9B is a valve seat 23A to be separated and seated.

Reference numeral 24 denotes a housing-side pilot air passage provided in the housing 12.
Reference numeral 4 has one end connected to a paint valve pilot air source (both not shown) via a pilot air pipe. The other end of the pilot air passage 24 is open to another male connection (not shown) provided on the bottom portion 14A of the cartridge mounting portion 14 so as to correspond to a cartridge-side pilot air passage 42 described later. .

Reference numeral 25 denotes an air suction passage provided in the housing 12 and opened to the bottom portion 14A of the cartridge mounting portion 14. The air suction passage 25 is connected to a negative pressure generating source (not shown) through a negative pressure pipe. It is connected to the. The air suction passage 25 sucks air in a negative pressure space 26 (illustrated in FIG. 4) which is located at the back of the cartridge mounting portion 14 and is defined between the cartridge 33 and the cylinder 33. Then, the cartridge 31 is attracted and fixed to the cartridge mounting portion 14.

Also, 27 is provided on the housing 12,
The detached air supply passage 27 is opened to the bottom 14A of the cartridge mounting portion 14, and the detached air supply passage 27 is connected to a detachment air source (both not shown) via an air pipe. The removal air supply passage 27 releases the cartridge 31 from the cartridge mounting portion 14 by supplying the removal air to the negative pressure space 26, and allows the removal of the cartridge 31.

Reference numeral 28 denotes a thinner valve housing provided in the head portion 12B of the housing 12.
Is disposed on the outer peripheral side of the housing side feed tube insertion hole 15.

Reference numeral 29 denotes a thinner valve provided in the thinner valve housing portion 28. The thinner valve 29 has a piston portion 29A slidably inserted in the thinner valve housing portion 28, and a base end side of the piston portion 29A. 29A, the front end extends through the housing side extrusion thinner passage 23, and the front end thereof is connected to the valve seat 2
3A, a valve body 29B which is separated and seated,
The valve body 29B is configured as a normally-closed valve by a valve spring 29C that urges the valve body 29B to be seated on the valve seat portion 23A via A. The piston portion 29A is provided in the thinner valve housing 2
8 defines a spring chamber 29D for accommodating the valve spring 29C and a pressure receiving chamber 29E into which pilot air flows.

The thinner valve 29 is normally set to the valve spring 2
By the urging force of 9C, the valve body 29B is seated on the valve seat portion 23A of the housing side extrusion thinner passage 23 to shut off the extrusion thinner passage 23, and the supply of thinner to the extrusion thinner storage chamber 37 of the cartridge 31 described later is stopped. ing. On the other hand, a pilot air pipe (not shown) from the pilot air source for the thinner valve and a pilot air passage 3
0, when pilot air is supplied to the pressure receiving chamber 29E via the valve spring 29C, the valve body 29B separates from the valve seat 23A against the valve spring 29C, and supplies thinner to the extruded thinner accommodating chamber 37. It is. The pilot air passage 30 has one end connected to a thinner valve pilot air source via a pilot air pipe and the other end connected to the thinner valve 29.
Of the pressure receiving chamber 29E.

On the other hand, 31a, 31b,.
Reference numeral 1p denotes a cartridge (hereinafter, referred to as a cartridge 31 as a whole) for individually storing the a-color, b-color,... N-color and other paints and supplying them to the rotary atomizing head 18. Each cartridge 31 is, as shown in FIG.
It is roughly constituted by a body 32, a piston 35, a cartridge side extrusion thinner passage 38, and a cleaning fluid valve 45, which will be described later.

Here, the paints of the colors a, b,..., N are dedicated colors which are relatively frequently applied, and each color has a dedicated cartridge 31a, 31b,. On the other hand, paints of r color, s color,... Z color, which are other paints, have relatively low painting frequency and share one cartridge 31p.

Reference numeral 32 denotes a body constituting the outer shape of the cartridge 31. The body 32 is made of a high-functional resin material or the like similar to the housing 12, and is generally constituted by a cylinder 33 and a feed tube 34 described later.

Reference numeral 33 denotes a cylinder forming the main body of the body 32.
The cylinder 33 is formed as a cylindrical body (cylinder) having a diameter dimension that is removably inserted into the cartridge mounting portion 14. On the front surface of the cylinder 33, a male connecting portion 33A is provided at a position corresponding to the female connecting portion 14B of the cartridge mounting portion 14, and a female connecting portion 33B is provided at a position corresponding to the convex portion 14C of the cartridge mounting portion 14. Have been. Further, a grip projection 33 </ b> C that is gripped when the cartridge 31 is replaced is provided at a rear portion of the cylinder 33. Further, a conical convex portion 33 </ b> D protrudes from the center of the front surface of the cylinder 33.

Here, the male connecting portion 33A and the female connecting portion 33B
When the cylinder 33 is mounted on the cartridge mounting portion 14 of the housing 12, the cylinder 33 is positioned in the circumferential direction. In addition, the male connecting portion 33A and the female connecting portion 3
3B is a paint filling device 51, 11 for the cylinder 33 to be described later.
9 when mounting the cylinder 3 on the cylinder support portion 57.
3 is positioned in the circumferential direction.

On the other hand, the conical convex portion 33D comes into contact with and engages with the conical reduced diameter portion 15B in a state where the cylinder 33 is mounted on the cartridge mounting portion 14 of the housing 12, and the cylinder 3
3 is positioned in the axial direction and the radial direction. Also,
When the cartridge 31 is attached to the cylinder supporting portion 57 of the paint filling devices 51 and 119, the conical convex portion 33D can
The cylinder 33 of the cartridge 31 is axially and radially positioned by contacting and engaging with a conical reduced diameter portion 56A of the filling table side feed tube insertion hole 56 described later.

Reference numeral 34 denotes a conical projection 33 of a cylinder 33.
D is a feed tube extending in the axial direction from the distal end, and a paint passage 34 </ b> A extending coaxially is formed in the feed tube 34. A base end side of the paint passage 34A is connected to a paint accommodating chamber 36 described later, and a distal end side is opened toward the rotary atomizing head 18. A paint passage 34A is reduced in diameter and a valve seat 34B is provided on the inner peripheral side of the distal end of the feed tube 34, and a valve body 41B of a paint valve 41 described later separates and sits on the valve seat 34B. . Further, a conical convex surface 34C is formed on the outer peripheral side of the distal end of the feed tube 34 by gradually reducing the diameter toward the distal end side.
4C comes into contact with and engages with a conical concave surface 59C of the connecting member 59 described later, and positions the tip of the feed tube 34 at the center of the connecting member 59. Note that the length of the feed tube 34 is
When the cartridge is attached to the cartridge attaching portion 14, the tip is set to extend to the inside of the rotary atomizing head 18.

Here, the feed tube 34 allows the paint supplied from a paint chamber 36 to be described later to flow through the paint passage 34A, and the rotary atomizing head 18 from the tip of the paint passage 34A.
It is spilled toward. Feed tube 3
When the paint is filled in the paint accommodating chamber 36, the tip 4 is used as a paint filling port by connecting its tip to the connection member 59.

On the other hand, a piston 35 is slidably inserted in the cylinder 33 so as to be slidable in the axial direction. The piston 35 communicates with the paint passage 34A of the feed tube 34 through the communication passage 36A. Paint chamber 36 to be extruded, and an extruder thinner chamber 3 for accommodating thinner as an extruding liquid.
7 and so on.

The paint chamber 36 is formed such that the bottom surface 36B on the feed tube 34 side becomes gradually deeper toward the center, and the communication passage 36A is formed at the center of the bottom surface 36B.
Is opened, and a cleaning fluid passage 43 described later is opened on the outer peripheral side. The piston 35 is connected to the feed tube 3.
The end face 35A on the fourth side is formed so as to gradually project toward the center such that the end face 35A substantially corresponds to the bottom face 36B of the paint accommodating chamber 36.

Reference numeral 38 denotes a cartridge-side extruding thinner passage. The extruding thinner passage 38 is provided so as to extend in the axial direction on the outer peripheral side of the cylinder 33, and one end thereof is opened at the tip end surface of the male connection portion 33 A of the cylinder 33. The other end communicates with the extrusion thinner storage chamber 37. The cartridge-side extruding thinner passage 38 pushes the piston 35 toward the feed tube 34 by supplying the thinner into the extruding thinner accommodating chamber 37, whereby the piston 35 is filled in the paint accommodating chamber 36. The paint is extruded toward the rotary atomizing head 18.

As the thinner as the extruded liquid, a thinner having high insulating properties or high electric resistance is used in order to prevent the high voltage generated by the high voltage generator 20 from leaking through the thinner. Also, by using thinner as the extruding liquid, this thinner prevents the paint from drying and sticking to the inner wall of the cylinder 33 when the piston 35 is displaced, and keeps the inner wall of the cylinder 33 always in a wet state. I do. Thereby, the frictional resistance between the piston 35 and the inner wall of the cylinder 33 is stabilized, and the piston 35 can be pushed smoothly. In addition, the piston 35 and the cylinder 33
The sealing property between the inner wall and the inner wall can also be improved.

A quick coupling 39 is provided in the male connection portion 33A of the cylinder 33 and provided at the open end of the cartridge side extrusion thinner passage 38. The quick coupling 39 connects the male connection portion 33A of the cylinder 33 described above. It is configured as a containment check valve. Then, as shown in FIG. 5, the quick coupling 39 urges the male connecting portion 33A, a stepped cylindrical valve body 39A whose tip projects from the male connecting portion 33A, and the valve body 39A in the protruding direction. A coil spring 39B and an elastic ring 39C made of rubber or the like provided on the outer peripheral side of the valve body 39A and sealing between the coil spring 39B and the male connection portion 33A are substantially constituted.

As shown in FIG. 4, when the cartridge 31 is attached to the cartridge attachment portion 14 and the male connection portion 33A is fitted to the female connection portion 14B, the quick coupling 39 has a distal end of the valve body 39A. The valve is opened by contacting the bottom of the female connection portion 14B, and the cartridge-side extrusion thinner passage 38 is communicated with the housing-side extrusion thinner passage 23 to allow the thinner to flow.

On the other hand, as shown in FIG. 5, when the cylinder 33 is removed from the cartridge mounting portion 14 and the male connecting portion 33A is detached from the female connecting portion 14B, the coil spring 39B
As a result, the valve body 39A is pressed against the elastic ring 39C to close the cartridge-side extrusion thinner passage 38, thereby preventing the thinner from flowing out from the extrusion thinner passage 38. The opening and closing operations of the quick coupling 39 are performed by the cartridge 3
The same applies to the case where 1 is attached to and detached from the cylinder support portion 57 of the filling table 52 described later.

Reference numeral 40 denotes a paint valve accommodating portion provided in the cylinder 33. The paint valve accommodating portion 40 is provided between the feed tube 34 and the paint accommodating chamber 36 and is provided at the axial center of the cylinder 33. I have.

Reference numeral 41 denotes a paint valve provided in the paint valve accommodating portion 40. The paint valve 41 is a piston which is slidably fitted in the paint valve accommodating portion 40 in substantially the same manner as the thinner valve 29 described above. 41A, the base end side is attached to the piston part 41A, and the front end side is the paint passage 34A of the feed tube 34.
A long valve body 41B extending inside the valve body and having a distal end portion separated from and seated on the valve seat portion 34B, and a valve for urging the valve body 41B to be seated on the valve seat portion 34B via the piston portion 41A. A normally closed valve is constituted by the spring 41C. Also,
The piston portion 41A connects the paint valve accommodating portion 40 with the valve spring 41.
A spring chamber 41D for accommodating C and a pressure receiving chamber 41E into which pilot air flows are defined.

The paint valve 41 always has a valve spring 41.
The urging force of C causes the valve body 41B to move the feed tube 34.
, The paint passage 34A is shut off, and the supply of paint to the rotary atomizing head 18 is stopped. On the other hand, when pilot air is supplied from the pilot air source for the paint valve to the pressure receiving chamber 41E through the pilot air pipe (none of which is shown), the housing-side pilot air passage 24, and the cartridge-side pilot air passage 42, the valve is closed. The valve element 41B separates from the valve seat 34B against the spring 41C, and supplies the rotary atomizing head 18 with the paint in the paint chamber 36. Here, one end of the pilot air passage 42 opens on the inner peripheral surface of another female connection portion (not shown) provided separately from the female connection portion 33B of the cylinder 33, and the other end thereof receives the pressure of the paint valve 41. It communicates with the chamber 41E.

Reference numeral 43 denotes a cartridge-side cleaning fluid passage provided in the cylinder 33 of the cartridge 31. The cleaning fluid passage 43 has one end opened to the inner peripheral surface of the female connection portion 33B and the other end provided to the paint chamber 36. Communicates with the outer periphery of the bottom surface 36B. Here, a valve body 45B of a cleaning fluid valve 45 described later is separated from the other end side of the cartridge-side cleaning fluid passage 43.
A seat 43A to be seated is provided.

Reference numeral 44 denotes a valve accommodating portion provided on the cylinder 33. The valve accommodating portion 44 is disposed on the outer peripheral side of the paint valve accommodating portion 40.

Reference numeral 45 denotes a cleaning fluid valve provided in the valve housing portion 44. The cleaning fluid valve 45 is a piston portion 45A slidably fitted in the valve housing portion 44, similarly to the thinner valve 29. And the base end is attached to the piston portion 45A,
A valve body 45B having a distal end extending in the cartridge-side cleaning fluid passage 43 and having a distal end separated from and seated on the valve seat 43A;
The valve body 45B is connected to the valve seat portion 4 via the piston portion 45A.
The valve is configured as a normally closed valve by a valve spring 45C that biases the seat 3A. Also, the piston part 45A
Defines a valve housing portion 44 as a spring chamber 45D for housing the valve spring 45C and a pressure receiving chamber 45E into which pilot air flows.

In the cleaning fluid valve 45, the valve body 45B is normally seated on the valve seat portion 43A of the cartridge-side cleaning fluid passage 43 by the urging force of the valve spring 45C to shut off the cleaning fluid passage 43 and store the paint. The paint filled in the chamber 36 is prevented from leaking out of the cleaning fluid passage 43. on the other hand,
The cartridge 31 is attached to the later-described paint filling devices 51 and 119, and pilot air is supplied from the cleaning fluid valve pilot air source 118 to the pressure receiving chamber 45E via the pilot air pipe 117, the cartridge side pilot air passage 46, and the like. Sometimes, the valve body 4 is opposed to the valve spring 45C.
5B is opened to allow thinner and air to flow through the paint chamber 36.

Here, one end of the cartridge-side pilot air passage 46 has a filling table-side pilot air passage 116 at one end.
The cleaning fluid valve pilot air source 118 is connected via a pilot air pipe 117, and the other end thereof communicates with a pressure receiving chamber 45 </ b> E of the cleaning fluid valve 45.

On the other hand, reference numeral 47 denotes a cartridge exchanging device. The cartridge exchanging device 47 is located in the vicinity of the painting robot 1 and in a painting booth or the like (see FIG. 1). Here, the cartridge exchanging device 47 stores the paint consumed by the coating in the paint containing chamber 36 of the cartridge 31.
And a cartridge holding device 1 for holding the cartridge 31 when the cartridge 31 is transferred between the paint filling device 51, 119 and the cartridge mounting portion 14 of the housing 12.
30 and the like. An atomizing head cleaning device (not shown) for cleaning the paint adhered to the rotary atomizing head 18 and the like is provided in the vicinity of a position where the cartridge 31 is attached and detached by the cartridge gripping device 130.

Next, a paint filling device constituting a part of the cartridge changing device 47 will be described with reference to FIGS.

., 51n are paint filling devices (hereinafter, referred to as paint filling devices 51 as a whole) provided in the cartridge changing device 47 for each of the paints of the colors a, b,. The device 51 fills the corresponding cartridge 31 with paints of the colors a, b,... The paint filling device 51 is generally constituted by a filling table 52, a filling tube side feed tube insertion hole 56, a connecting member 59, a filling valve 61, an extrusion thinner supply / discharge valve 86, a cleaning fluid supply valve 101, and the like, which will be described later. .

52n are filling tables (hereinafter referred to as the filling table 52 as a whole) constituting the paint filling devices 51a, 51b,... 51n. Here, the filling table 5
2 is a leg 53 attached to the horizontal plate 47A of the cartridge changing device 47 by bolting or the like;
And a pedestal portion 55 which is provided with the diameter of the upper portion of the column portion 54 extending upward and downward. The filling table 52 includes, in addition to the filling tables 52a, 52b,... 52n corresponding to the dedicated color paint, a filling table 52p used in the paint filling apparatus 119 corresponding to the paint with a low coating frequency (FIG. 13). reference).

Reference numeral 56 denotes a feed tube side feed tube insertion hole which extends upward and downward in the column portion 54 of the fill table 52. The feed tube 34 of the cartridge 31 is inserted into the feed tube insertion hole 56. Fitted in state.
The upper side of the filling tube side feed tube insertion hole 56 becomes a conical diameter-reduced portion 56A whose diameter is conically reduced, and the conical diameter-reduced portion 56A is fitted when the conical convex portion 33D of the cylinder 33 abuts. By combining, the cylinder 33 is positioned in the axial direction and the radial direction.

Reference numeral 57 denotes a cylinder support provided on one side (upper side) of the pedestal 55 in the axial direction. The cylinder support 57 is provided with the cylinder 33 of the cartridge 31 and has a feed tube insertion hole on the filling table side. 56 is formed in a concave cylindrical shape on the opening side. Also, the bottom 57 of the cylinder support 57
8A and 9B, a female connection portion 57B to which the male connection portion 33A of the cylinder 33 is fitted and a male connection portion 57C to be fitted to the female connection portion 33B of the cylinder 33 are separately formed. Have been. Then, the female connecting portion 57B and the male connecting portion 57C
When attaching the cylinder 33 to the cylinder support portion 57,
It serves as a cylinder positioning portion for positioning the cylinder 33 in the circumferential direction.

Reference numeral 58 denotes a feed tube insertion hole 5 on the filling table side.
6 is a connecting member receiving hole provided on the other side in the axial direction of the filling table 52 at a position deeper than 6, and the connecting member receiving hole 58 is a circle provided so as to enlarge the diameter of the feed tube insertion hole 56. It is formed as a shaped hole. The lower side of the connection member housing hole 58 is reduced in diameter via the step 58A and penetrates downward.

A connecting member 59 is provided in the connecting member housing hole 58 so as to be movable upward and downward.
As shown in FIG. 7, the inside is formed in a cylindrical shape to serve as a paint passage 59A, and a spring receiver 59B is provided at the upper end with an enlarged diameter. Further, the connecting member 59 is provided with a conical concave surface 59C which is located near the upper side of the paint passage 59A and forms a feed tube positioning portion. This conical concave surface 5
9C is for positioning the tip of the feed tube 34 at the center of the paint passage 59A by abutting and engaging the conical convex surface 34C of the feed tube 34. Further, the paint passage 59A is provided with a paint hose 63 described later.
Is connected to the filling valve 61 via the. The connecting member 59 is configured such that the distal end of the feed tube 34 is connected to the paint passage 5.
9A, the paint passage 34A of the feed tube 34 is connected to a paint circulation pipe 67 described later via a paint hose 63 or the like.

Reference numeral 60 denotes a coil spring provided on the outer peripheral side of the connection member 59. The coil spring 60 is disposed between the spring receiver 59B of the connection member 59 and the step 58A of the connection member housing hole 58. . Thereby, the coil spring 60 urges the connecting member 59 upward in the direction of the filling tube side feed tube insertion hole 56.

As described above, the connection member 59 is disposed so as to be movable upward and downward, and the coil spring 60 urges the connection member 59 so as to face the feed tube 34. For this reason, even if the feed tube 34 is displaced upward and downward, this displacement can be absorbed by the upward and downward movement of the connecting member 59. Further, the feed tube 34 can be securely fitted to the connection member 59 by the coil spring 60.

Next, reference numeral 61 denotes a filling valve provided to be connected to the connecting member 59. The filling valve 61 communicates and shuts off the paint passage to circulate the paint to the cartridge 31 or to circulate the paint. It will stop. And the filling valve 61
Is filled with paints of the colors a, b,..., N, which are the above-mentioned exclusive colors, and is generally constituted by a manifold 62, a paint supply / discharge valve 64, a waste liquid discharge valve 71, etc., which will be described later.

Reference numeral 62 denotes a manifold which forms a valve case of the filling valve 61. The manifold 62 has a paint inlet 62A.
And a paint outlet 62B connected to the paint inlet 62A.
And a waste liquid outlet 62C connected to the paint outlet 62B.
And a communication path 62 </ b> D that connects them.

A paint hose 63 is provided between the filling valve 61 and the connecting member 59 and forms a part of a paint passage. The paint hose 63 is made of a flexible material. The other end is connected to the paint passage 59 </ b> A of the connection member 59.

Reference numeral 64 denotes a paint supply / discharge valve attached to the manifold 62. The paint supply / discharge valve 64 includes a valve case 64A,
A paint inlet 64B provided in the valve case 64A and connected to the paint inlet 62A of the manifold 62; and a paint inlet 64 slidably provided in the valve case 64A.
The valve body 64C is configured substantially by a valve body 64C that opens and closes B, and a valve spring 64D that urges the valve body 64C in the valve closing direction. 9 and 12, the paint inlet 64B is connected to a paint circulation pipe 67 that connects a paint supply line 65 and a paint return line 66. In the middle of the paint circulation pipe 67, a pressure regulator 68 is mounted between the paint supply line 65 and the paint supply / discharge valve 64. Further, the paint supply / discharge valve 64 is
A pilot air pipe 7 is connected to a paint supply / discharge valve pilot air source 69 for opening the valve body 64C against the valve spring 64D.
0.

The paint supply / discharge valve 64 is normally urged by a valve spring 64D to a valve body 64C.
As shown in FIG.
Cut off. On the other hand, the paint supply / discharge valve pilot air source 69
When the pilot air is supplied through the pilot air pipe 70 from the valve, the paint supply / discharge valve 64
The valve body 64C is displaced against the pressure. Thereby, the valve element 6
4C communicates with the paint inlet 64B, connects the paint hose 63 to the paint circulation pipe 67 through the paint inlet 62A and the paint outlet 62B of the manifold 62, and allows the paint to flow.

Here, the paint supply line 65, the paint return line 66, and the paint circulation pipe 67 constitute a paint supply source, and the paint supply line 65 supplies the paint in a paint tank (not shown) under pressure. It is. The paint return line 66 is for returning paint toward the paint tank.
The paint supply line 65, the paint circulation pipe 67, and the paint return line 66 form a paint circulation circuit between the paint tank and the paint tank. The paint is circulated through the paint circulation pipe 67 and the paint return line 66 and returned to the paint tank again. As a result, the paint circulates and circulates between the paint tank and the paint chamber 36 of the cartridge 31 when the paint breathing operation described later is performed.

Reference numeral 71 denotes a waste liquid discharge valve attached to the manifold 62 so as to face the paint supply / discharge valve 64. The waste liquid discharge valve 71 has a valve case 71A, A waste liquid outlet 7 provided in the valve case 71A and connected to a waste liquid outlet 62C of the manifold 62.
1B and slidably provided in the valve case 71A,
A valve body 71C for opening and closing the waste liquid discharge port 71B;
This is substantially constituted by a valve spring 71D that urges 1C in the valve closing direction. The waste liquid discharge valve 71 normally urges the valve body 71C by a valve spring 71D, and the valve body 71C
To shut off the waste liquid outlet 71B. On the other hand, when the pilot air is supplied from the waste liquid discharge valve pilot air source 72 via the pilot air pipe 73, the waste liquid discharge valve 71 opens the valve body 71C to communicate with the waste liquid discharge port 71B, and the car waste air is discharged. A waste liquid such as paint or thinner that has washed the cartridge 31 is discharged from the paint hose 63 to the paint outlet 62B, the communication passage 62D, the waste liquid outlet 62C, the waste liquid pipe 7 of the manifold 62.
4 to the waste liquid tank 75.

The waste liquid discharge valve 71 is connected to the cartridge 3.
By opening the valve after filling the paint in the first paint storage chamber 36, the paint corresponding to the pressure (residual pressure) remaining in the paint storage chamber 36 and the paint passage 34A of the feed tube 34 is discharged. It also functions as a residual pressure release valve to bring it to atmospheric pressure.

Next, reference numeral 76 denotes an air suction passage provided in the pedestal portion 55 and opened to the bottom portion 57A of the cylinder support portion 57.
The air suction passage 76 is connected to a negative pressure source 78 via a negative pressure pipe 77. Then, the air suction passage 76
Is located at the back of the cylinder support portion 57 and the cartridge 3
The cartridge 31 is attracted and fixed to the cylinder supporting portion 57 by sucking the air in the negative pressure space 79 defined between the cylinder 33 and the first cylinder 33.

Reference numeral 80 denotes a detached air supply passage provided on the pedestal portion 55 and opened to the bottom portion 57A of the cylinder support portion 57. The detached air supply passage 80 is connected to a detachment air source 82 via an air pipe 81. It is connected. The detached air supply passage 80 supplies the detached air to the negative pressure space 79 so as to release the fixed state of the cartridge 31 from the cylinder support portion 57, and release the cartridge from the filling table 52.
This allows the removal of the cartridge 31.

Further, reference numeral 83 denotes a pilot air pipe (shown in FIG. 12) connected to a filling table side pilot air passage (not shown) provided in the pedestal portion 55. One end of the pilot air pipe 83 is a paint valve. Is connected to a pilot air source 84. The pilot air passage is provided with a paint valve 4
One cartridge-side pilot air passage 42 is connected. Accordingly, the pilot air pipe 83 and the filling table side pilot air passage communicate with the cartridge side pilot air passage 42 when the cartridge 31 is attached to the cylinder support portion 57 of the filling table 52, and the paint valve pilot The pilot air from the air source 84 is supplied to the paint valve 41.

On the other hand, reference numeral 85 denotes an extruder thinner passage which forms an extruding liquid passage provided in the pedestal portion 55 of the filling table 52 so as to be connectable to the extruder thinner accommodating chamber 37 of the cartridge 31. Has one end open to the female connection portion 57B of the cylinder support portion 57, and the other end connected to an extrusion thinner supply / discharge valve 86 described later.

Next, reference numeral 86 denotes an extruder thinner supply / discharge valve serving as an extruder liquid supply / discharge valve. The extruder thinner supply / discharge valve 86 is connected to the paint container 36 of the cartridge 31 from the paint circulation pipe 67.
The paint is sucked into the paint chamber, or the paint in the paint chamber 36 of the cartridge 31 is pushed out to the paint circulation pipe 67. The extrusion thinner supply / discharge valve 86 includes a manifold 87, an extrusion thinner supply valve 89, and an extrusion thinner discharge valve 9 which will be described later.
5 and the like.

Reference numeral 87 denotes a manifold of the extrusion thinner supply / discharge valve 86.
In the manifold 87, a thinner supply port 87 is provided.
A, a thinner outlet 87B, and a thinner breathing port 87C communicating with the thinner supply port 87A and the thinner outlet 87B are provided. Here, the thinner breathing port 87C of the manifold 87 is connected to an extrusion thinner passage 85 provided in the filling table 52 through a thinner hose 88.

Reference numeral 89 denotes an extrusion thinner supply valve attached to the manifold 87. The extrusion thinner supply valve 89 is provided on the valve case 89A and the thinner supply port 87A of the manifold 87 connected to the thinner supply port 87A of the manifold 87. A supply port 89B, a valve body 89C slidably provided in the valve case 89A, and opening and closing the thinner supply port 89B.
A valve spring 89D for urging the valve element 89C in the valve closing direction is roughly constituted. Here, thinner supply port 89B
Is connected to an extrusion thinner supply line 92 as an extrusion liquid supply source via a thinner pipe 90 and a pressure regulator 91 as shown in FIG. Further, the push-out thinner supply valve 89 is provided with a valve body 8 against the valve spring 89D.
It is connected via a pilot air pipe 94 to a pilot air source 93 for a thinner supply valve for opening 9C. The supply pressure of the thinner by the extrusion thinner supply line 92 is set to a pressure higher than the supply pressure of the paint by the paint supply line 65.

The push-out thinner supply valve 89 normally closes the thinner supply port 89B by urging the valve 89C with a valve spring 89D. On the other hand, when the pilot air is supplied from the pilot air source 93 for the extrusion thinner supply valve via the pilot air pipe 94, the extrusion thinner supply valve 89 is set to the valve spring 89.
The valve element 89C is displaced against D. Thereby, the valve element 89C communicates with the thinner supply port 89B,
Extruded thinner passage 8 through thinner supply port 87A, thinner breathing port 87C, and thinner hose 88 of manifold 87
5 communicates with the extrusion thinner supply line 92.

Reference numeral 95 denotes an extrusion thinner discharge valve attached to the manifold 87 so as to face the extrusion thinner supply valve 89. The extrusion thinner discharge valve 95 is substantially the same as the aforementioned extrusion thinner supply valve 89, and has a valve case 95A. A thinner outlet 95B provided in the valve case 95A and connected to a thinner outlet 87B of the manifold 87; and a valve slidably provided in the valve case 95A to open and close the thinner outlet 95B. It is roughly constituted by a body 95C and a valve spring 95D for urging the valve body 95C in the valve closing direction. Here, the thinner outlet 95B is connected to the thinner pipe 96.
Is connected to the thinner storage tank 97 via the. The push-out thinner discharge valve 95 is connected via a pilot air pipe 99 to a push-out thinner discharge valve pilot air source 98 for opening a valve body 95C against a valve spring 95D.

The extrusion thinner discharge valve 95 normally shuts off the thinner discharge port 95B with the valve body 95C. on the other hand,
When pilot air is supplied from the pilot thinner discharge valve pilot air source 98, the push thinner discharge valve 9
5 communicates with the thinner outlet 95B by the valve element 95C. As a result, the extrusion thinner discharge valve 95 connects the extrusion thinner passage 85 to the thinner storage tank 97 through the thinner hose 88, the thinner breathing port 87C and the thinner discharge port 87B of the manifold 87, and the cartridge 31 is closed. This allows the extruded thinner in the thinner storage chamber 37 to return to the thinner storage tank 97.

The extrusion thinner supply / discharge valve 86 is constructed as described above. When supplying the paint from the paint circulation pipe 67 to the paint storage chamber 36 of the cartridge 31, the extrusion thinner supply valve 89 is closed and the extrusion is performed. The thinner discharge valve 95 is opened. As a result, the extrusion thinner passage 85 and the thinner hose 88 are connected to the thinner breathing port 87C of the manifold 87.
Through the thinner outlet 95B and the thinner pipe 96 side. As a result, the paint thinning chamber 37 of the cartridge 31 is brought into the atmospheric pressure state, so that the paint can be sucked into the paint chamber 36 through the paint circulation pipe 67 and the filling valve 61.

The paint chamber 36 of the cartridge 31
When extruding the paint in the paint circulation pipe 67, the extruder thinner supply valve 89 is opened and the extruder thinner discharge valve 95 is closed. Thereby, the extrusion thinner passage 85,
The thinner hose 88 is switched to a thinner supply port 89B and a thinner pipe 90 via a thinner breathing port 87C. As a result, the extruded thinner accommodating chamber 37 of the cartridge 31 is supplied from the extruded thinner supply line 92 set to a pressure higher than the paint supply pressure by the paint supply line 65.
Thinner is supplied. Therefore, the extrusion thinner storage chamber 37
The paint in the paint storage chamber 36 is
It can be extruded into the paint circulation pipe 67 via the filling valve 61.

Next, reference numeral 100 denotes a filling-table-side cleaning fluid passage provided in the pedestal portion 55 of the filling table 52;
One end of 00 is connected to a cleaning fluid hose 103 described later. The other end of the cleaning fluid passage 100 is opened on the peripheral surface of the male connection portion 57C of the cylinder support portion 57 so as to correspond to the cartridge-side cleaning fluid passage 43. As a result, when the cartridge 31 is attached to the cylinder support portion 57 of the filling table 52, the filling table-side cleaning fluid passage 100 communicates with the cartridge-side cleaning fluid passage 43, and the cleaning fluid (thinner, air) is supplied to the paint containing chamber 36. It is to be supplied to.

Reference numeral 101 denotes the paint chamber 3 of the cartridge 31.
The cleaning fluid supply valve 101 supplies a cleaning fluid to the cleaning fluid supply 6, and the cleaning fluid supply valve 101 is generally constituted by a manifold 102, a cleaning thinner supply valve 104, a cleaning air supply valve 110, and the like, which will be described later.

A manifold 102 for the cleaning fluid supply valve 101 has a thinner supply port 10 in the manifold 102.
2A, air supply port 102B, and thinner supply port 102
A and the cleaning fluid outlet 1 communicating with the air supply port 102B
02C is provided. Here, the manifold 102
The cleaning fluid outlet 102 </ b> C is connected to the filling-table-side cleaning fluid passage 1 provided on the filling table 52 via the cleaning fluid hose 103.
00 is connected.

Reference numeral 104 denotes a cleaning thinner supply valve attached to the manifold 102.
A valve case 104A, provided on the valve case 104A,
A thinner supply port 104B connected to the thinner supply port 102A of the manifold 102, a valve element 104C slidably provided in the valve case 104A, for opening and closing the thinner supply port 104B, and closing the valve element 104C. It is roughly constituted by a valve spring 104D that urges in the valve direction. Here, the thinner supply port 104B is connected to a cleaning thinner supply line 107 via a thinner pipe 105 and a pressure regulator 106. Also, the cleaning thinner supply valve 1
Numeral 04 is connected via a pilot air pipe 109 to a cleaning thinner supply valve pilot air source 108 for opening the valve body 104C against the valve spring 104D.

The cleaning thinner supply valve 104 normally closes the thinner supply port 104B by urging the valve body 104C with the valve spring 104D. On the other hand, the pilot air source 108 for the cleaning thinner supply valve
When the pilot air is supplied through the pilot air pipe 109 from the valve, the cleaning thinner supply valve 104 displaces the valve body 104C against the valve spring 104D. As a result, the valve body 104C communicates with the thinner supply port 104B, thereby forming the thinner supply port 1 of the manifold 102.
02A, cleaning fluid outlet 102C, cleaning fluid hose 10
The cleaning fluid passage 43 on the cartridge side communicates with the cleaning thinner supply line 107 through the cleaning fluid supply line 107.

Reference numeral 110 denotes a cleaning air supply valve attached to the manifold 102. The cleaning air supply valve 110 is provided in the valve case 110A and air provided in the valve case 110A and connected to the air supply port 102B of the manifold 102. A supply port 110B and a valve body 11 slidably provided in the valve case 110A for opening and closing the air supply port 110B.
0C and a valve spring 1 for urging the valve body 110C in the valve closing direction.
10D. Here, the air supply port 110B is connected to the cleaning air supply line 113 via an air pipe 111 and a pressure regulator 112. The cleaning air supply valve 110 is provided with a valve spring 11.
Pilot air piping 1 is connected to pilot air source 114 for the cleaning air supply valve for opening valve body 110C against O.D.
15 are connected.

The cleaning air supply valve 110 normally closes the air supply port 110B with the valve body 110C by urging the valve body 110C with the valve spring 110D.
On the other hand, when pilot air is supplied from the cleaning air supply valve pilot air source 114 via the pilot air pipe 115, the cleaning air supply valve 110
The valve body 110C is displaced against 0D. by this,
The valve body 110C communicates with the air supply port 110B, thereby connecting the cartridge-side cleaning fluid passage 43 to the cleaning air supply line 1 via the air supply port 102B, the cleaning fluid outlet 102C, and the cleaning fluid hose 103 of the manifold 102.
13.

The cleaning fluid supply valve 10 constructed as described above
1 is a cleaning thinner supply valve 104 and a cleaning air supply valve 110
Are alternately opened. Thereby, the cleaning fluid supply valve 10
Reference numeral 1 denotes a cleaning thinner from the cleaning thinner supply line 107 and a cleaning air from the cleaning air supply line 113, the manifold 102, the cleaning fluid hose 103, and the cleaning fluid passage 1.
00, 43, the paint storage chamber 36 of the cartridge 31
Can be supplied to

Reference numeral 116 denotes a filling table side pilot air passage provided in the pedestal 55. One end of the pilot air passage 116 is connected to a cleaning fluid valve pilot air source 118 via a pilot air pipe 117. The other end of the pilot air passage 116 is connected to the cylinder support 57 so as to correspond to the cartridge-side pilot air passage 46.
Of the male connecting portion 57C. This allows
The filling-table-side pilot air passage 116 communicates with the cartridge-side pilot air passage 46 when the cartridge 31 is mounted on the cylinder support portion 57 of the filling table 52, and transfers pilot air from the cleaning-fluid-valve pilot air source 118 to the cleaning fluid. This is supplied to the valve 45.

On the other hand, 119 is a cartridge exchange device 47.
In the other paint filling device (see FIG. 13) provided in the above, the paint filling device 119 is provided with a color r, s which has a relatively low painting frequency.
.., Z color paints are filled in the cartridge 31p.

Reference numeral 120 denotes a filling valve of the paint filling device 119.
The filling valve 120 includes a manifold 121, paint supply / discharge valves 122r, 122s,.
29 and the like.

Reference numeral 121 denotes a manifold for the filling valve 120.
In the manifold 121, the paint hose 63 described above,
122z, paint supply / discharge valves 122r, 122s,.
A waste liquid discharge valve 129 is attached.

.. 122z are r, s,... Z paint supply / discharge valves mounted on the manifold 121. The paint supply / discharge valve 122r is a paint supply line through which the r paint flows. 123r, paint return line 124r
Is connected to a paint circulation pipe 125r communicating with the paint circulation pipe 125r. The paint supply / discharge valve 122s is connected to a paint circulation line 125s communicating with a paint supply line 123s through which the s color paint flows and a paint return line 124s. Further, the paint supply / discharge valve 122z is connected to a paint circulation pipe 125z communicating with a paint supply line 123z through which paint of z color flows and a paint return line 124z.

The paint circulation pipes 125r, 125s,
... In the middle of 125z, paint supply lines 123r, 12r
3s,... 123z and paint supply / discharge valves 122r, 122s,.
122z and the pressure regulator 12
.. 126z are attached. Further, the paint supply / discharge valves 122r, 122s,... 122z are each independently provided with a paint supply / discharge valve pilot air source 127.
(Only one is shown) through a pilot air pipe 128.

Reference numeral 129 denotes a waste liquid discharge valve attached to the manifold 121. The waste liquid discharge valve 129 opens when the cartridge 31 is washed, and discharges waste liquid such as thinner used for washing to the waste liquid tank 75. .

The filling valve 120 is connected to the paint supply / discharge valve 12.
By opening and closing 2r, 122s,... 122z,
One paint is selected from r, s,... z paints and supplied to the common cartridge 31p. Also,
At the time of color change, by opening the waste liquid discharge valve 129, the thinner supplied from the cleaning fluid supply valve 101, the paint of the previous color adhered to the paint storage chamber 36, the paint hose 63, the manifold 121, etc. of the cartridge 31p by air. Wash.

Next, reference numeral 130 denotes a cartridge exchange device 47.
The cartridge gripping device 130 (see FIG. 1) grips the cartridge 31 when the cartridge 31 is transferred between the coating device 11 and the paint filling devices 51 and 119. , A gripper 131 described later.

Reference numeral 131 denotes a gripper constituting the cartridge gripper 130. As shown in FIG.
A casing 132; and a pair of gripping claws 133, 133 provided on the casing 132 so as to be able to approach and separate from each other.
And each of the gripping claws 13 provided on the casing 132.
3 is roughly constituted by a cylinder device (not shown) that approaches and separates the cylinder 3. The gripper 131 grips the gripping projection 33C provided on the cylinder 33 of the cartridge 31 by moving the gripping claws 133 by the cylinder device.

The cartridge type coating system according to the present embodiment has the above-described configuration. A method for filling the cartridge 31 with the paint using the paint filling devices 51 and 119 is shown in FIG. 10 and FIG. This will be described in detail with reference to FIG. 14 and the time charts shown in FIGS.

First, the operation when the cartridge 31 after the painting operation is mounted on the paint filling device 51 before filling with the paint will be described.

Therefore, when the painting operation is completed, the cartridge 31 attached to the cartridge attaching portion 14 of the housing 12 is gripped by the gripper 131 of the cartridge gripping device 130, and is removed from the cartridge attaching portion 14 of the housing 12. You. Then, for example, assuming that the painting operation of the color a has been completed, the cartridge 31
a is attached to a filling table 52a of a paint filling device 51a for filling a color paint.

As described above, the cartridge 31 is
At the time of mounting on the cylinder 2, the cylinder 33 is inserted into the cylinder support portion 57 while inserting the feed tube 34 into the filling tube side feed tube insertion hole 56.

The cartridge 31 is connected to the cylinder support 5.
When the cartridge 31 is attached to the filling table 52, the air in the negative pressure space 79 defined between the cylinder 33 and the cylinder 33 is suctioned by the air suction passage 76.
Is fixed.

Further, when the cylinder 33 of the cartridge 31 is attached to the cylinder support portion 57 of the filling table 52, the male connection portion 33A and the female connection portion 33B of the cylinder 33 are connected to the female connection portion 57B of the cylinder support portion 57 and the male connection portion. The cylinder 33 is positioned in the circumferential direction with respect to the cylinder support part 57 because the cylinder 33 is fitted into the engagement state with each of the parts 57C. Also, at this time, the conical convex portion 33D of the cylinder 33 is engaged with the conical reduced diameter portion 56A of the filling table side feed tube insertion hole 56 in an engaged state.
Are positioned in the axial and radial directions.

When the feed tube 34 is inserted through the filling tube side feed tube insertion hole 56, the tip of the feed tube 34 is fitted into the paint passage 59A of the connecting member 59. At this time, the conical convex surface 34C formed at the tip of the feed tube 34 is engaged with the conical concave surface 59C of the connecting member 59. For this reason, the distal end opening of the feed tube 34 is positioned at the center of the paint passage 59A of the connection member 59.

Moreover, when the distal end of the feed tube 34 is fitted to the connection member 59, the feed tube 3
4, the connection member 59 moves in accordance with the upward and downward positions, and absorbs the upward and downward positional displacement of the feed tube 34. Further, the coil spring 60 urges the connection member 59 toward the feed tube 34 and fits the connection member 59 to the feed tube 34 in a liquid-tight manner.

Next, the operation when the paint filling device 51 fills paint of a special color which is relatively frequently applied will be described with reference to FIG.

First, in filling the paint, it is necessary to discharge the paint remaining in the cartridge 31a used in the previous painting operation. Therefore, the cartridge 31
When the paint is discharged from a, the paint valve 41 is opened as shown in FIG. Then, the paint supply / discharge valve 64 is opened, and the extrusion thinner supply valve 89 is opened.

Thus, the paint chamber 36 of the cartridge 31a communicates with the paint circulation pipe 67 through the paint hose 63, the paint outlet 62B of the manifold 62, the paint inlet 64B of the paint supply / discharge valve 64, and the like. The extruded thinner storage chamber 37 of the cartridge 31a communicates with the extruded thinner supply line 92 via an extruded thinner passage 85, a thinner hose 88, a thinner breathing port 87C of the manifold 87, a thinner supply port 87A, a thinner pipe 90, and the like. Here, the supply pressure of the thinner by the extrusion thinner supply line 92 is set to a pressure higher than the supply pressure of the paint by the paint supply line 65 (the paint circulation pipe 67).
The paint in the paint accommodating chamber 36 is pressed by the extruder thinner supplied into the extruder thinner accommodating chamber 37, extruded to the paint circulation pipe 67, and returned from the paint return line 66 to the paint tank.

Next, the paint storage chamber 3 of the cartridge 31a
When 6 is almost empty, the paint accommodating chamber 36 is newly filled with the a-color paint.

Therefore, when the paint is filled, the extrusion thinner supply valve 89 is closed and the extrusion thinner discharge valve 95 is opened. As a result, the extrusion thinner passage 85 and the thinner hose 88 are connected to the thinner storage tank 97 via the thinner outlet 95B of the extrusion thinner discharge valve 95 and the thinner pipe 96.
, The inside of the extrusion thinner accommodating chamber 37 is almost at atmospheric pressure. Accordingly, since the supply pressure of the paint flowing through the paint circulation pipe 67 becomes higher than the pressure in the extrusion thinner storage chamber 37, the paint supplied from the paint circulation pipe 67 passes through the paint supply / discharge valve 64 and the paint valve 41. Paint room 3
It is sent into 6.

Here, if there is time until the next painting operation using the cartridge 31a, a painting standby state is set. In the coating standby state, a paint breathing operation is performed to prevent the pigment in the paint from separating and settling.

In this paint breathing operation, the same operations as the above-described paint extrusion operation and paint suction operation are repeated.
That is, the paint in the paint chamber 36 of the cartridge 31 a is pushed out to the paint circulation pipe 67 to return the paint from the paint return line 66 to the paint tank, and the cartridge is supplied from the paint supply line 65 through the paint circulation pipe 67. 31
The operation of sucking the paint into the paint storage chamber 36 of a is repeated. Thereby, the paint storage chamber 36 of the cartridge 31a
The paint is constantly breathed (circulated) between the paint supply line 65 and the paint return line 66 to prevent solid components such as pigments from separating and settling.

When the cartridge 31a is used for the painting operation, the above-mentioned paint breathing operation is stopped when the paint suction operation is completed, that is, when the paint accommodating chamber 36 is filled with the paint. At this time, the pressure at the time of the suction operation of the paint remains as a residual pressure in the paint accommodating chamber 36, so that the operation shifts to an operation of releasing the residual pressure.

In this residual pressure release operation, the waste liquid discharge valve 71 is opened to discharge paint remaining in the paint storage chamber 36, the feed tube 34, and the paint hose 63 to the waste liquid tank 75. To atmospheric pressure. Finally,
By closing the paint valve 41, the cartridge 31a is closed.
Can be filled with the paint.

In this way, when the coating preparation for the coating operation using the cartridge 31a is completed, the suction of the negative pressure air is stopped, and the removal air is supplied to the negative pressure space 79 to release the fixing of the cartridge 31a. The cartridge 31a can be removed from the filling table 52.

On the other hand, when the coating line is to be stopped for a long period of time, each of the cartridges 31, the filling table 52, the coating hose 6
3. A cleaning operation is performed so that the paint does not adhere to the wetted portion of the paint such as the manifold 62. The cleaning operation of the cartridge 31 and the like will be described with reference to FIG.

First, in order to perform the cleaning operation, it is necessary to discharge the paint remaining in the cartridge 31. Therefore, when discharging the paint, the paint valve 41 of the cartridge 31, the paint supply / discharge valve 64 of the filling valve 61, and the extrusion thinner supply valve 89 of the extrusion thinner supply / discharge valve 86 are opened, and the paint is ejected into the extrusion thinner storage chamber 37. The thinner flows to displace the piston 35 toward the feed tube 34. As a result, the paint remaining in the previous coating operation is pushed out from the paint chamber 36 into the paint circulation pipe 67, and the area of the paint chamber 36 is reduced by reducing the volume of the paint chamber 36. Here, when the piston 35 is displaced to the feed tube 34 side, the piston 35 is moved so that its end face 35A is
6 stops at a position separated from the bottom surface 36B by a predetermined dimension, and a gap for the flow of the cleaning fluid is secured between the end surface 35A and the bottom surface 36B.

When the discharge of the remaining paint is completed, the operation proceeds to a washing operation for washing paint adhered to the inner surface of the paint chamber 36 of the cartridge 31, the paint passage 34A of the feed tube 34, the paint hose 63 and the like.

In this cleaning operation, as shown in FIGS. 11 and 15, the paint supply / discharge valve 64 of the filling valve 61 is closed, and the cleaning fluid valve 45 and the waste liquid discharge valve 71 are opened. This allows
The cleaning fluid supply valve 101 communicates with the paint chamber 36 via the cleaning fluid hose 103 and the cleaning fluid passages 100 and 43.
The paint chamber 36 is released to the waste liquid tank 75 via the feed tube 34, the paint hose 63, and the filling valve 61. In this state, the cleaning air supply valve 110 of the cleaning fluid supply valve 101 is opened, and the cleaning air from the cleaning air supply line 113 is supplied to the cleaning fluid hose 103, the cleaning fluid passage 100, and the like.
The liquid is supplied to the paint storage chamber 36 through 43. This allows
The cleaning air presses the paint remaining in the paint storage chamber 36 and the like, and discharges the paint to the waste liquid tank 75 via the paint hose 63, the filling valve 61, and the like.

Next, the cleaning air supply valve 110 of the cleaning fluid supply valve 101 is closed, and the cleaning thinner supply valve 104 is opened. As a result, the cleaning thinner is supplied from the cleaning thinner supply line 107 to the paint accommodating chamber 36, and the cleaning thinner is supplied from the paint accommodating chamber 36 to the feed tube 34 and the paint hose 6.
3. The paint adhering to these is discharged to the waste liquid tank 75 through the filling valve 61 and the like, and is washed by the cleaning thinner.

Then, the supply of the cleaning air and the supply of the cleaning thinner described above are repeated. Finally, the paint container is filled with the thinner, and then the paint valve 41, the cleaning fluid valve 45, the cleaning thinner supply valve 104, and the waste liquid discharge. By closing the valve 71, each part can be washed to be in a long-term stopped state filled with thinner.

Further, a paint having a relatively low frequency of painting, for example, an r-color paint is washed by another paint filling device 119,
The operation in the case of performing the color change cleaning for filling the s-color paint will be described with reference to FIGS.

First, it is necessary to discharge the r-color paint as the pre-color paint from the cartridge 31p and wash the r-color paint adhered to the cartridge 31p. Therefore, when discharging the r-color paint, the cartridge 31p is attached to the filling table 52p. Next, when the paint valve 41 of the cartridge 31p, the paint supply / discharge valve 122r of the filling valve 120, and the extruder thinner supply valve 89 of the extruder thinner supply / discharge valve 86 are opened, the paint in the paint chamber 36 of the cartridge 31p is filled with the previous coating The surplus r-color paint is pushed out to the paint circulation pipe 125r.

Next, in order to wash the r-color paint adhered to the feed tube 34, the paint storage chamber 36, the paint hose 63, etc., the paint supply / discharge valve 122r of the filling valve 120 is closed.
The cleaning fluid valve 45 and the waste liquid discharge valve 129 are opened.

Next, the cleaning air supply valve 110 and the cleaning thinner supply valve 104 of the cleaning fluid supply valve 101 are alternately opened and closed to supply the cleaning air and the cleaning thinner to the paint accommodating chamber 36. As a result, the cleaning air and the cleaning thinner are discharged from the paint storage chamber 36 to the waste liquid tank 75 through the feed tube 34, the paint hose 63, and the waste liquid discharge valve 129 of the filling valve 120. Can be cleaned by cleaning air and cleaning thinner.

Then, the supply of the cleaning air and the cleaning thinner described above is repeated, and finally, the paint chamber 36 and the like are filled with the thinner, and then the cleaning fluid valve 45, the cleaning air supply valve 110, the cleaning thinner supply valve 104, and the waste liquid discharge. By closing the valve 129, the cleaning of the r-color paint is completed.

Next, when the cleaning of the cartridge 31p is completed, the s-color paint as the next color paint is applied to the cartridge 3p.
The operation of filling 1p is started. In this case, the paint supply / discharge valve 122s is opened, and the extrusion thinner discharge valve 95 of the extrusion thinner supply / discharge valve 86 is opened. Thus, the s-color paint is sucked into the paint storage chamber 36 from the paint circulation pipe 125s via the paint hose 63 and filled. Then, when the s-color paint is filled in the cartridge 31p, the flow proceeds to the paint breathing operation. In this paint breathing operation, the paint suction operation by the paint valve 41, the paint supply / discharge valve 122s, and the thinner discharge valve 95, and the push-out thinner discharge valve 95 and the push-out thinner supply valve 89 are opened in the same manner as described above. The operation of extruding the paint in the paint circulation pipe 125s into the paint circulation pipe 125s is repeated.

When the cleaning operation of the r color paint, which is the previous color, is completed, the paint chamber 3 of the cartridge 31p is closed.
6. The cleaning thinner remains in the paint passage 34A of the feed tube 34, the paint hose 63, and the like. Therefore, when the s-color paint, which is the next color, is sucked into the paint storage chamber 36,
The remaining cleaning thinner is also sucked into the paint accommodating chamber 36 together with the paint, and the paint is diluted by the cleaning thinner.

However, after the paint is sucked into the paint chamber 36, the above-mentioned paint breathing operation is performed. Therefore, the cleaning thinner for thinning the next color paint is provided between the paint chamber 36 and the paint circulation pipe 67. While the paint is moving, it is mixed with the paint and absorbed as a part of the solvent. Therefore,
Even if a small amount of thinner remains during the cleaning operation, the coating quality is not affected.

As described in detail above, according to the first embodiment, the cartridge 31 has the cartridge-side cleaning fluid passage 43 communicating with the paint accommodating chamber 36, and the cleaning fluid passage 43 is communicated and shut off. The cleaning fluid valve 45 is provided. On the other hand, the paint filling devices 51 and 119 are provided with a cleaning fluid supply valve 101 for supplying a cleaning thinner and cleaning air to the paint chamber 36 of the cartridge 31. As a result, in a state where the cleaning fluid valve 45 is opened and the cleaning fluid passage 43 is communicated with the cleaning fluid supply valve 101, the cleaning fluid hose 103 and the filling table side cleaning fluid passage 10 are connected.
The cleaning air and the cleaning thinner are alternately supplied to the coating chamber 36 through the cleaning chamber 0 to wash the coating remaining in the coating chamber 36 and the like, and the cleaning waste liquid is supplied to the feed tube 3.
4. Discharge to the waste liquid tank 75 via the paint hose 63, the filling valve 61 and the like. As described above, the cleaning operation of the paint can be performed in a short time and reliably by the cleaning in which the cleaning air and the cleaning thinner are alternately supplied, and the reliability and the productivity can be improved.

The filling valve 61 is used to supply a paint to the paint chamber 36 or to open the paint supply / discharge valve 64 when returning the paint in the paint chamber 36 to the supply side. A waste liquid discharge valve 71 that opens when washing is provided. Therefore, when the paint supply / discharge valve 64 is opened, the paint filling operation into the paint containing chamber 36 and the breathing action (supply / discharge operation) of the paint can be performed. Further, when the waste liquid discharge valve 71 is opened, the cleaning fluid supplied to the paint accommodating chamber 36 can be discharged via the feed tube 34 and the like, and a path for the cleaning fluid to flow vigorously is secured. , Can improve the cleaning efficiency.

Further, the extrusion thinner supply / discharge valve 86 includes an extrusion thinner supply valve 89 for supplying and discharging the extrusion thinner to and from the extrusion thinner storage chamber 37, and an extrusion thinner discharge valve 95. Therefore, the extruding thinner supply / discharge valve 86 supplies and discharges the extruding thinner to and from the extruding thinner accommodating chamber 37 so that the paint in the paint accommodating chamber 36 passes through the paint circulating pipe 67 and
125 can be extruded or sucked. Thus, even when the cartridge 31 is mounted on the filling table 52 and is waiting for the next coating operation, the coating material can be constantly circulated and flow.

As a result, the paint storage chamber 36, the paint hose 6
In the paint of No. 3 or the like, a solid component such as a pigment in the paint can be maintained in a uniform dispersion state without separating from a liquid component and sedimentation. Can be prevented from being closed. In addition, since a coating material in which pigments are uniformly dispersed at the time of coating can be supplied to a coating machine, coating quality can be improved.

The filling table 52 of each of the paint filling devices 51 and 119 communicates with the filling table side cleaning fluid passage 100 communicating with the cartridge side cleaning fluid passage 43 and the cartridge side pilot air passage 46 of the cleaning fluid valve 45. Since the filling table side pilot air passage 116 is provided, these passages can be communicated only by attaching the cartridge 31 to the filling table 52, and workability can be improved.

Each of the paint filling devices 51 and 119 fills the inside of the cylinder 33 of the cartridge 31 with the paint by using the opening at the tip of the feed tube 34 from which the paint flows out as a filling port. As a result, it is not necessary to provide a dedicated paint supply port in the cartridge for filling the paint separately from the feed tube 34, so that the configuration of the cartridge 31 can be simplified, the assembly workability can be improved, and the manufacturing cost can be improved. Can be reduced. In addition, by eliminating the dedicated paint supply port, it is possible to reduce a portion where paint leakage is likely to occur, thereby improving reliability against paint leakage. Further, the connection time for filling can be reduced.

On the other hand, the coating apparatus 11 includes a housing 12
An extrusion thinner supply device for supplying an extrusion thinner toward the extrusion thinner storage chamber 37 of the cartridge 31 attached to the cartridge 31 is provided. Therefore, when the coating is performed by the coating apparatus 11, the extrusion thinner supply device supplies the extrusion thinner to the extrusion thinner storage chamber 37, and the piston 35 pushes the coating material in the coating chamber 36. Thus, the paint can be discharged from the feed tube 34 to the rotary atomizing head 18 and sprayed from the rotary atomizing head 18.

Next, a second embodiment of the present invention will be described with reference to FIG.
This will be described in detail with reference to FIG. A feature of the present invention is that the extruding liquid passage and the cleaning fluid passage of the cartridge are:
The cleaning fluid valve has a common opening that is commonly opened on the outer surface side of the body, and the cleaning fluid valve is formed as a switching valve that switches the common opening between an extruding liquid passage and a cleaning fluid passage. In addition,
In the present embodiment, the same components as those in the above-described first embodiment are denoted by the same reference numerals, and description thereof will be omitted.

141a, 141b,... 141n and 1
Reference numeral 41p denotes a cartridge according to the present embodiment (hereinafter, referred to as a cartridge 141 as a whole) used in place of the cartridge 31 according to the first embodiment. As shown in FIG. , Piston 145, paint valve 149, common opening 15
1. Branch extrusion thinner passage 152, branch cleaning fluid passage 1
53 and a switching valve 155.

Reference numeral 142 denotes a body constituting the outer shape of the cartridge 141. The body 142 is substantially constituted by a cylinder 143 and a feed tube 144. Here, as shown in FIGS. 19 and 20, the cylinder 143 is provided with a male connection portion 143A at a position corresponding to a female connection portion 167B of the cylinder support portion 167 described later, and the male connection portion of the cylinder support portion 167 is provided. A female connection portion 143B is provided at a position corresponding to 167C. A holding projection 143C is provided at the rear of the cylinder 143. Further, a conical convex portion 143D protrudes from the center of the front surface of the cylinder 143.

Reference numeral 145 denotes a piston inserted in the cylinder 143 so as to be slidable in the axial direction. The piston 145 communicates inside the cylinder 143 with a feed tube 144 and a branch cleaning fluid passage 153 described later. 146 and an extrusion thinner storage chamber 147 communicating with a branch extrusion thinner passage 152 to be described later.

Reference numeral 148 denotes a paint valve accommodating portion provided in the cylinder 143. The paint valve accommodating portion 148 is located between the feed tube 144 and the paint accommodating chamber 146.
43 is provided at the axial center position.

Reference numeral 149 denotes a paint valve provided in the paint valve accommodating portion 148. The paint valve 149 has a piston portion 149A and a valve body 149 similarly to the paint valve 41 according to the first embodiment.
B, a valve spring 149C, and the piston portion 149A defines the paint valve housing portion 148 as a spring chamber 149D and a pressure receiving chamber 149E. Here, the pressure receiving chamber 149
E is connected to one end of a cartridge-side pilot air passage 150, and the other end of the pilot air passage 150 is opened on the inner peripheral surface of the female connection portion 143 </ b> B of the cylinder 143.

Reference numeral 151 denotes a male connection portion 143A of the cylinder 143.
The common opening 151 is provided on the front end surface of the cylinder 143, and the common opening 151 extends in the cylinder 143 toward the paint chamber 146,
The tip is a passage switching chamber 151A. here,
The common opening 151 forms a passage through which the extrusion thinner (cleaning thinner) and the cleaning air flow, and serves as a common opening of a branch extrusion thinner passage 152 and a branch cleaning fluid passage 153 described later. The common opening 151 connects to a common passage 174 on the filling table side described later.

Reference numeral 152 denotes a branch extrusion thinner passage extending in the axial direction on the outer peripheral side of the cylinder 143, and the extrusion thinner flows through the branch extrusion thinner passage 152. One end of the branch extrusion thinner passage 152 is connected to the common opening 1.
51 is connected to the passage switching chamber 151A, and the other end is connected to the extrusion thinner storage chamber 147.

Reference numeral 153 denotes a branch cleaning fluid passage through which cleaning air and cleaning thinner flow.
One end of the branch cleaning fluid passage 153 is connected to the common opening 15.
The other end is connected to the outside of the paint chamber 146 at a position separate from the feed tube 144.

Here, the branch extrusion thinner passage 152 and the branch cleaning fluid passage 153 are opened so as to be opposed to the axial direction of the cylinder 143 in the direction in which the valve element 155B of the switching valve 155 described later is displaced. Thereby, each passage 15
2, 153 is selected by the valve body 155B and communicates with the common opening 151.

Reference numeral 154 denotes a switching valve accommodating portion provided in the cylinder 143. The switching valve accommodating portion 154 is provided in the paint valve accommodating portion 14.
8 is disposed on the outer peripheral side.

Reference numeral 155 denotes a switching valve as a cleaning fluid valve provided in the switching valve accommodating portion 154. The switching valve 155 is a piston portion 1 slidably fitted in the switching valve accommodating portion 154.
55A, the base end side is attached to the piston portion 155A, the front end side extends to the passage switching chamber 151A, and the branch extrusion thinner passage 152 and the branch cleaning fluid passage 15
3 and a valve spring 155C for urging the valve body 155B in the direction of closing the branch cleaning fluid passage 153 via the piston portion 155A. Further, the piston part 155A defines the switching valve housing part 154 as a spring chamber 155D and a pressure receiving chamber 155E.

As shown in FIG. 19, the switching valve 155 normally operates the valve element 155B by the urging force of the valve spring 155C.
, The branch cleaning fluid passage 153 is closed, and the thinner extruded from the common opening 151 flows to the branch extruded thinner passage 152 side. On the other hand, a pilot air source 179 for a switching valve described later.
When pilot air is supplied to the pressure receiving chamber 155E through the cartridge side pilot air passage 156 and the like, the valve element 155B is displaced against the valve spring 155C as shown in FIG. The extrusion thinner passage 152 is closed. As a result, an extrusion thinner is supplied to the branch cleaning fluid passage 153 through the common opening 151 or the like as the cleaning thinner, and the cleaning air is supplied.

Here, one end of the cartridge-side pilot air passage 156 has one end thereof.
77, the male connection portion 143A of the cylinder 143.
It has an opening on the peripheral surface. Also, the pilot air passage 15
The other end of 6 communicates with the pressure receiving chamber 155E of the switching valve 155.

Next, a paint filling apparatus according to the present embodiment will be described with reference to FIGS.

. 161n are paint filling devices according to the present embodiment (hereinafter referred to as paint filling devices 161 as a whole) used in place of the paint filling device 51 according to the first embodiment. The filling device 161 fills the corresponding cartridge 141 with paints of a color, b color,... The paint filling device 161 is generally constituted by a filling table 162 described later, a filling tube side feed tube insertion hole 166, a connecting member 169, and the like.

162n are filling tables (hereinafter referred to as filling tables 162 as a whole) constituting the paint filling devices 161a, 161b,... 161n. The filling tables 162 are the filling tables according to the first embodiment. In substantially the same manner as the table 52, it is roughly constituted by legs 163, pillars 164, and pedestals 165. The filling table 162 includes
Filling tables 162a, 162b,... Corresponding to dedicated color paints
In addition to 162n, there is a filling table 162p (see FIG. 22) used in a paint filling device 187 corresponding to paint with a low coating frequency.

Reference numeral 166 denotes a filling-table-side feed tube insertion hole extending upward and downward in the column portion 164 of the filling table 162, and 167 denotes one axial side (upper side) of the base 165.
2 shows a cylinder support portion provided in FIG. Here, as shown in FIG. 19, the female connection portion 167 into which the male connection portion 143A of the cylinder 143 fits is provided on the bottom 167A of the cylinder support portion 167.
B and a male connection 167C that fits into the female connection 143B of the cylinder 143 are separately formed.

Reference numeral 168 denotes a connection member receiving hole located at a position deeper than the filling table side feed tube insertion hole 166 and is provided on the other side in the axial direction of the filling table 162. Reference numeral 169 denotes an upper and lower connection member receiving hole. 3 shows a connection member movably provided in a direction. Here, the connecting member 169 has the same configuration as the connecting member 59 according to the first embodiment, and the connecting member 1
69 is the feed tube 14 by the coil spring 170
It is urged upward toward 4.

Next, 171 is provided on the base 165,
The air suction passage 171 is connected to a negative pressure generating source 78 via a negative pressure pipe 77 through an air suction passage opened at the bottom 167A of the cylinder support portion 167. Reference numeral 172 denotes a detached air supply passage opened at the bottom 167A of the cylinder support portion 167. The detached air supply passage 172 is connected to the air pipe 81.
Is connected to a removal air source 82 via a.

Reference numeral 173 denotes a filling table side pilot air passage for the paint valve 149 provided on the base 165. One end of the pilot air passage 173 is connected to the paint valve pilot air source 84 via the pilot air pipe 83. Have been. The other end of the pilot air passage 173 is opened on the peripheral surface of the male connection portion 167C of the cylinder support portion 167 so as to correspond to the cartridge side pilot air passage 150.

On the other hand, 174 is the pedestal portion 16 of the filling table 162.
5, the common passage 174 includes a passage for extruding the paint in the paint storage chamber 146 and a passage for the paint storage chamber 146.
6. The cleaning thinner used for cleaning the paint adhered to the feed tube 144 and the like, and the cleaning air used for cleaning the paint in the paint storage chamber 146 flow. One end of the common passage 174 is connected to the fluid hose 17.
5, and is connected to a shuttle valve 176 to be described later. The other end is opened at the bottom surface of the female connection portion 167B of the cylinder support portion 167 so as to correspond to the common opening 151.

Reference numeral 176 denotes a shuttle valve as a selection valve. The shuttle valve 176 has an inflow side connected to an extruder thinner supply / discharge valve 180 and a cleaning air supply valve 185 described later, and an outflow side through a fluid hose 175. 162. Here, the shuttle valve 176 is connected to the extrusion thinner supplied from the extrusion thinner supply / discharge valve 180 via the thinner hose 184 and the cleaning air supply valve 185 to the air hose 18.
6 is supplied selectively to the cartridge 141 via the fluid hose 175. Further, the shuttle valve 176 prevents the thinner from the extrusion thinner supply / discharge valve 180 from flowing into the cleaning air supply valve 185 or the cleaning air from the cleaning air supply valve 185 from flowing into the extrusion thinner supply / discharge valve 180. Preventing.

Reference numeral 177 denotes a filling-table-side pilot air passage for the switching valve 155 provided on the base 165 of the filling table 162. The pilot air passage 177 supplies pilot air for switching the switching valve 155. is there. One end of the filling table side pilot air passage 177 is connected to a switching valve pilot air source 179 via a pilot air pipe 178. On the other hand, the other end of the pilot air passage 177 is opened on the inner peripheral surface of the female connection portion 167B of the cylinder support portion 167 so as to correspond to the cartridge-side pilot air passage 156.

Reference numeral 180 denotes an extrusion thinner supply / discharge valve serving as an extrusion liquid supply / discharge valve.
Similarly to the extrusion thinner supply / discharge valve 86 according to the embodiment,
It comprises a manifold 181, an extrusion thinner supply valve 182, an extrusion thinner discharge valve 183, and the like. Then, the extrusion thinner supply / discharge valve 180 is provided with a thinner hose 184.
Is connected to the shuttle valve 176 via the.

Here, in the present embodiment, the thinner supplied from the extrusion thinner supply valve 182 of the extrusion thinner supply / discharge valve 180 is supplied as an extrusion thinner for extruding paint to the extrusion thinner storage chamber 147 of the cartridge 141. In addition, the paint is supplied to the paint storage chamber 146 as a cleaning thinner for cleaning the paint.

A cleaning air supply valve 185 supplies cleaning air to the paint accommodating chamber 146 of the cartridge 141. The cleaning air supply valve 185 is an air pipe similar to the cleaning air supply valve 110 according to the first embodiment. The cleaning air supply line 113 is connected to the cleaning air supply line 113 via a pressure regulator 112. The cleaning air supply valve 185 is connected to a shuttle valve 176 via an air hose 186.

In FIG. 22, reference numeral 187 denotes another paint filling device corresponding to paint having a low painting frequency. The paint filling device 187 has the r color, s color,... Described in the first embodiment.
A filling valve 120 for filling the z-color paint is provided.

The cartridge type coating system according to the present embodiment has the above-described configuration. A method for filling the cartridge 141 with the paint using the paint filling devices 161 and 187 will be described with reference to FIGS. This will be described in detail.

First, the operation when the paint filling device 161 is used to fill a paint of a special color having a relatively high painting frequency, for example, a color, will be described with reference to a time chart shown in FIG.

First, in filling the paint, it is necessary to discharge the a-color paint remaining in the cartridge 141a used in the previous painting operation. Thus, when the paint is discharged from the cartridge 141a, as shown in FIG.
Is closed, and the common opening 151 is connected to the branch extrusion thinner passage 152. Then, the paint valve 149, the paint supply / discharge valve 64, and the extrusion thinner supply valve 182 are opened.

As a result, the extrusion thinner storage chamber 147 of the cartridge 141a is
2. Common opening 151, common passage 174, fluid hose 17
5. The extruder communicates with a thinner supply / discharge valve 180 via a shuttle valve 176, a thinner hose 184, and the like. Therefore, by opening the extrusion thinner supply valve 182 of the extrusion thinner supply / discharge valve 180, the extrusion thinner supplied from the extrusion thinner supply valve 182 flows into the extrusion thinner storage chamber 147 through these passages. Also, the cartridge 141a
Paint chamber 146 is provided with a paint valve 149 and a paint hose 63.
And the like, and communicates with the paint circulation pipe 67. This allows
The paint in the paint storage chamber 146 is extruded from the thinner storage chamber 14.
It is pressed by the extrusion thinner supplied into the pipe 7 and is pushed out to the paint circulation pipe 67, and is returned from the paint return line 66 to the paint tank.

Next, when the paint chamber 146 of the cartridge 141a is almost empty, the paint chamber 146 is newly filled with the a-color paint.

Therefore, when the paint is filled, the extrusion thinner supply valve 182 is closed and the extrusion thinner discharge valve 18 is closed.
By opening the valve 3, the inside of the extrusion thinner accommodating chamber 147 is brought to a substantially atmospheric pressure state. Thereby, the paint circulation pipe 67
Is supplied from the paint supply / discharge valve 64 and the paint valve 149.
And the like, and is fed into the paint accommodating chamber 146.

Here, if there is time until the next painting operation using the cartridge 141a, a painting standby state is set. In this coating standby state, the same operation as the above-described paint extrusion operation and paint suction operation is repeated to perform a paint breathing operation for circulating the paint. Thus, the paint is constantly breathed (circulated) between the paint storage chamber 146 and the paint supply line 65 and the paint return line 66, thereby preventing the pigment from separating and settling.

When the cartridge 141a is used for a painting operation, the above-described paint breathing operation is stopped when the paint is filled in the paint chamber 146 by the paint suction operation. Next, the waste liquid discharge valve 71 is opened, and the paint accommodating chamber 146, the feed tube 144, and the paint hose 63 are opened.
The paint corresponding to the remaining pressure (residual pressure) is discharged into the waste liquid tank 75 and brought into an atmospheric pressure state. Finally, by closing the paint valve 149, the paint chamber 14 of the cartridge 141a is closed.
6 can be completed.

In this way, when the coating preparation for the coating operation using the cartridge 141a is completed, the suction of the negative pressure air is stopped, and the removal air is supplied to supply the cartridge 141a.
By releasing the fixing of the cartridge 141, the cartridge 141a can be removed from the filling table 162a.

Next, a case where the coating line is stopped for a long time will be described with reference to a time chart shown in FIG.

In this case, in order to discharge the paint remaining in the cartridge 141a, the switching valve 155 closes the branch cleaning fluid passage 153, and the paint valve 14 is closed.
9. The paint supply / discharge valve 64 and the extrusion thinner supply valve 182 are opened. As a result, the extruded thinner supplied from the extruded thinner supply valve 182 flows into the extruded thinner accommodating chamber 147, and the paint in the paint accommodating chamber 146 is pressed by the piston 145 to return to the paint circulation pipe 67. At this time, a gap is formed between the piston 145 and the paint accommodating chamber 146 for flowing the cleaning air and the cleaning thinner.

Then, when the discharge of the remaining paint is completed, the operation proceeds to the cleaning operation of the cartridge 141 and the like. In this cleaning operation, the switching valve pilot air source 179 is connected to the switching valve 15.
5 is supplied with pilot air. Thereby, the switching valve 1
As shown in FIG. 20, the 55 th valve body 155B closes the branch extrusion thinner passage 152 and the branch cleaning fluid passage 153.
To release. Further, the paint valve 149 and the waste liquid discharge valve 71 are opened.

In this state, the cleaning air supply valve 185 is opened, and the cleaning air from the cleaning air supply line 113 is supplied to the air hose 186, the shuttle valve 176, the fluid hose 175, the common passage 174, the common opening 151, and the branch cleaning fluid passage. Fifteen
3 to the paint chamber 146. This allows
The cleaning air presses the paint remaining in the paint storage chamber 146 and the like, and discharges the paint through the feed tube 144, the paint hose 63, and the like.

Next, the cleaning air supply valve 185 is closed, and the extrusion thinner supply valve 182 is opened. As a result, the extruded thinner from the extruded thinner supply line 92 is supplied as a cleaning thinner to the paint accommodating chamber 146. Is discharged together with.

Then, the supply of the cleaning air and the supply of the cleaning thinner using the extrusion thinner described above are repeated, and finally, the paint accommodating chamber 146 is filled with the thinner. can do.

The operation of changing the color of a paint having a relatively low frequency of application and filling with another paint filling device 187 is substantially the same as the operation described in the first embodiment, and is therefore omitted. It shall be.

As described in detail above, according to the present embodiment, the switching valve 155 provided in the cartridge 141 is switched to connect the common opening 151 to the branch extrusion thinner passage 152, so that the extrusion thinner supply / discharge valve is provided. The paint in the paint chamber 146 can be returned to the paint circulation pipe 67 by the extrusion thinner supplied from 180. On the other hand, by switching the switching valve 155 to connect the common opening 151 to the branch cleaning fluid passage 153, the extrusion thinner supply / discharge valve 1
The extrusion thinner supplied from 80 can be supplied as a cleaning thinner into the paint chamber 146, and the cleaning air from the cleaning air supply valve 185 can be supplied into the paint chamber 146.

Therefore, the paint attached to the interior of the paint chamber 146 or the like can be washed using the extrusion thinner for pushing out the paint in the paint chamber 146. It is possible to omit a dedicated passage or the like. Accordingly, the configuration of the paint filling device 161 can be simplified, the cost can be reduced, and the degree of freedom in designing can be improved.

Next, a third embodiment of the present invention will be described with reference to FIG.
27 will be described in detail with reference to FIG. The feature of the present invention is to provide a gripping device for gripping a cartridge between a paint filling device and a coating machine, the gripping device, a gripper for gripping the cartridge, and a cartridge when the cartridge is gripped by the gripper. The cleaning fluid passage is constituted by a cleaning fluid passage on the gripping tool side connected to the cleaning fluid passage. The cleaning fluid passage on the gripper side is connected to a cleaning fluid supply valve for supplying a cleaning fluid to the paint storage chamber of the cartridge.
Thus, the cleaning fluid passage provided on the filling table side as in the first embodiment is eliminated. In addition,
In the present embodiment, the same components as those in the above-described first embodiment are denoted by the same reference numerals, and description thereof will be omitted.

Reference numeral 191 denotes a cartridge according to the present embodiment which is used in place of the cartridge 31 according to the first embodiment. The cartridge 191 is substantially the same as the cartridge 31 according to the first embodiment, as shown in FIG. As shown, a body 192, a piston 195, an extrusion thinner passage 198, a paint valve 200, a cleaning fluid passage 201,
The cleaning fluid valve 203 is generally configured.

Reference numeral 192 denotes a body constituting the outer shape of the cartridge 191. The body 192 is roughly constituted by a cylinder 193 and a feed tube 194 provided to project in the axial direction from the conical convex portion 193D of the cylinder 193. ing.

Reference numeral 193 denotes a cylinder forming the main body of the body 192. The cylinder 193 has a male connection portion 193A and a female connection portion 1 in substantially the same manner as the cylinder 33 according to the first embodiment.
93B, a holding protrusion 193C, and a conical convex portion 193D. However, the cylinder 193 according to the present embodiment is
Another female connection portion 193 is located at a position corresponding to a male connection portion 226A of the casing 226 described later on the end surface of the gripping projection 193C.
It is different from the cylinder 33 according to the first embodiment in that E is provided. A piston 195 is inserted into the cylinder 193, and the piston 195 is
93 is a paint chamber 196 and an extruded thinner chamber 197.
And it is defined.

Reference numeral 198 denotes a cartridge-side extrusion thinner passage through which the extrusion thinner supplied and discharged to the extrusion thinner accommodating chamber 197 is provided in the cylinder 193. One end of the extrusion thinner passage 198 has a male connection portion 193A of the cylinder 193.
An opening is provided at the distal end face, and the other end is in communication with the extrusion thinner storage chamber 197.

[0224] Reference numeral 199 denotes a paint valve accommodating portion provided on the tip side of the cylinder 193, and reference numeral 200 denotes a paint valve provided in the paint valve accommodating portion 199. Here, the paint valve 200 is formed similarly to the paint valve 41 according to the above-described first embodiment.

Reference numeral 201 denotes a cylinder 19 of the cartridge 191.
The cleaning fluid passage 201 is provided on the outer peripheral side of the cylinder 193 in the axial direction. In addition, one end of the cleaning fluid passage 201 is connected to the holding projection 193 of the cylinder 193.
An opening is provided on the bottom surface of the female connection portion 193E provided in C, and the other end is communicated with the outer peripheral side of the bottom surface of the paint chamber 196. Here, on the other end side of the cartridge-side cleaning fluid passage 201,
A valve seat portion 201A is provided on which a valve body 203B of a cleaning fluid valve 203 described later separates and sits.

Numeral 202 denotes a valve accommodating portion provided in the cylinder 193. The valve accommodating portion 202 is located on the outer peripheral side of the paint valve accommodating portion 199 and substantially parallel to the paint valve accommodating portion 199. I have.

Reference numeral 203 denotes a cleaning fluid valve provided in the valve accommodating portion 202. As shown in FIG.
Like the cleaning fluid valve 45 according to the first embodiment, the cleaning fluid valve 45 includes a piston portion 203A, a valve body 203B, and a valve spring 203C. Further, the piston portion 203A is
Are defined in a spring chamber 203D and a pressure receiving chamber 203E.
Further, the distal end of the valve body 203B extends to the cartridge-side cleaning fluid passage 201, and the distal end of the valve
Separate and sit on 1A.

Reference numeral 204 denotes a cartridge-side pilot air passage connected to the cleaning fluid valve 203. One end of the pilot air passage 204 is provided on the inner surface of the female connection portion 193B of the cylinder 193 corresponding to the filling table-side pilot air passage 223. It is open. The other end of the pilot air passage 204 communicates with the pressure receiving chamber 203E of the cleaning fluid valve 203.

Next, reference numeral 211 denotes a paint filling device according to the present embodiment, which is used in place of the paint filling device 51 according to the first embodiment.
1 is that the filling table 212 is not provided with a cleaning fluid passage, and the paint filling device 5 according to the first embodiment is different from that of the first embodiment.
Different from 1. The filling table 21 used in the present embodiment
2 is formed by legs 213, pillars 214 and pedestals 215. The filling table 212 has a filling table side feed tube insertion hole 216 formed in the axial direction.
A cylinder support 217 is formed on the pedestal 215.

Here, a bottom 217A, a female connection 217B, and a male connection 217C are formed in the cylinder support 217, as in the case of the cylinder support 57 according to the first embodiment. The filling table 212 has a connection member accommodation hole 2.
A connection member 219 is accommodated in the connection member accommodation hole 218. Further, an air suction passage 220, a detached air supply passage 221, an extrusion thinner passage 222, and a cleaning fluid valve 20 are provided in the pedestal portion 215 of the filling table 212.
3 is provided with a filling table side pilot air passage 223.

Next, reference numeral 224 denotes a cartridge gripping device according to the present embodiment which is used in place of the cartridge gripping device 130 according to the first embodiment. The cartridge gripping device 224 is provided with a gripper 225. . Here, the gripper 225 is the gripper 1 according to the first embodiment.
31, a casing 226 and a pair of gripping claws 2 that are provided on the casing 226 so as to approach and separate from each other and grip the gripping projection 193 </ b> C of the cartridge 191.
27, 227 and a cylinder device (not shown) provided on the casing 226 for moving the gripping claws 227 toward and away from each other.

However, the grip 225 according to the present embodiment is used.
Is connected to the female connection portion 193 of the cylinder 193 on the casing 226.
E is provided with a male connection portion 226A that fits
The gripper-side cleaning fluid passage 228 and the quick coupling 230 described later
Gripper 1 according to the first embodiment in that
31.

Reference numeral 228 denotes a gripper-side cleaning fluid passage provided in the casing 226. One end (upstream side) of the cleaning fluid passage 228 is connected to the first through a fluid hose (not shown) or the like.
Similarly to the cleaning fluid supply valve 101 according to the embodiment, the cleaning thinner is connected to a cleaning fluid supply valve (not shown) for supplying cleaning air. On the other hand, the other end (downstream side) of the cleaning fluid passage 228 is open at the tip end surface of the male connection portion 226A of the casing 226.

Numeral 229 denotes a valve housing formed in the vicinity of the male connection 226A of the casing 226 at a position in the middle of the cleaning fluid passage 228. The valve housing 229 is provided at the end of the male connection 226A. Is the valve body 2 of the quick fitting 230 described later.
30B is a valve seat portion 229A to be separated and seated.

Numeral 230 denotes the valve body accommodating portion 2 of the casing 226.
The quick coupling 230 provided in 29,
Shaft 230A whose tip protrudes from male connection 226A
A valve body 230B located in the valve body accommodating portion 229 and integrally fixed to the base end of the shaft portion 230A;
The coil spring 230C urges the valve OB in the direction of seating on the valve seat portion 229A.

Then, as shown in FIG. 27, the quick coupling 230 is
25 and the holding projection 19 of the cylinder 193.
When brought into contact with 3C, the tip of the shaft portion 230A comes into contact with the bottom of the female connection portion 193E, and the valve element 230B opens.
Accordingly, the quick coupling 230 communicates the cleaning fluid passage 228 with the cartridge-side cleaning fluid passage 201, and allows the circulation of the cleaning thinner and the cleaning air.

On the other hand, as shown in FIG. 25, when the gripping of the cartridge 191 by the cartridge gripping device 224 is released, the quick coupling 230 causes the valve element 230B to be seated on the valve seat portion 229A by the coil spring 230C and the cleaning fluid The passage 228 is closed to prevent the thinner from flowing out of the cleaning fluid passage 228.

As described in detail above, according to the present embodiment, the connection port of the cartridge-side cleaning fluid passage 201 provided on the cartridge 191 is arranged at the female connection portion 193E provided on the holding projection 193C of the cylinder 193. I do. Also,
The casing 226 of the gripper 225 is provided with a cleaning thinner for the cartridge-side cleaning fluid passage 201 and a gripper-side cleaning fluid passage 228 for supplying cleaning air. Thereby, the cartridge 191 and the paint filling device 2
Since the number of passages connected to the passage 11 can be reduced by eliminating the cleaning fluid passage, the configuration related to the passage connection portion can be simplified, and the degree of freedom in designing and assembling work can be reduced. Properties and the like can be improved.

Next, a fourth embodiment of the present invention will be described with reference to FIG.
This will be described in detail with reference to FIG. A feature of the present invention is to provide a gripping device for gripping a cartridge between a paint filling device and a coating machine, a gripper for gripping the cartridge, and a cartridge when the cartridge is gripped by the gripper. And a pilot air passage connected to the cleaning fluid valve. The pilot air passage on the gripper side is connected to a pilot air source that supplies pilot air to the cleaning fluid valve of the cartridge. Accordingly, the pilot air passage for the cleaning fluid valve provided in the filling table as in the first embodiment is eliminated. In the present embodiment, the same components as those in the above-described first embodiment are denoted by the same reference numerals, and description thereof will be omitted.

Reference numeral 241 denotes a cartridge according to the present embodiment which is used in place of the cartridge 31 according to the first embodiment. The cartridge 241 is substantially the same as the cartridge 31 according to the first embodiment, 242, a piston 245, an extrusion thinner passage 248, a paint valve 250, a washing fluid passage 251, and a washing fluid valve 253.

[0241] Reference numeral 242 denotes a body constituting the outer shape of the cartridge 241. The body 242 is roughly constituted by a cylinder 243 and a feed tube 244 protruding in the axial direction from the conical convex portion 243D of the cylinder 243. ing.

Reference numeral 243 denotes a cylinder forming the main body of the body 242. The cylinder 243 is substantially the same as the cylinder 33 according to the first embodiment, and has a male connecting portion 243A and a female connecting portion 243A.
43B, a holding protrusion 243C, and a conical convex portion 243D. However, the cylinder 243 according to the present embodiment
Another female connecting portion 243 is located at a position corresponding to a male connecting portion 273A of the casing 273 described later on the end surface of the gripping projection 243C.
It is different from the cylinder 33 according to the first embodiment in that E is provided. A piston 245 is inserted into the cylinder 243, and the piston 245 is
43 is a paint chamber 246 and an extruded thinner chamber 247.
And it is defined.

Reference numeral 248 denotes a cartridge-side extrusion thinner passage through which the extrusion thinner supplied and discharged to and from the extrusion thinner accommodating chamber 247 flows. The extrusion thinner passage 248 has one end connected to the male connection portion 2 of the cylinder 243.
43A is opened at the tip end surface, and the other end is pushed out of the thinner storage chamber 24.
It communicates with 7.

Reference numeral 249 denotes a paint valve accommodating portion provided on the tip side of the cylinder 243, and reference numeral 250 denotes a paint valve provided in the paint valve accommodating portion 249. Here, the paint valve 250 is the first paint valve.
It is formed similarly to the paint valve 41 according to the embodiment.

Reference numeral 251 denotes a cylinder 24 of the cartridge 241.
3, one end of the cleaning fluid passage 251 is opened to the inner peripheral surface of the female connection portion 243B, and the other end is communicated with the outer peripheral surface of the bottom surface of the paint accommodating chamber 246. . Here, the cartridge-side cleaning fluid passage 25
1 has a valve body 25 of a cleaning fluid valve 253 described later.
A valve seat 251A is provided on which 3B separates and sits.

Numeral 252 is a valve accommodating portion provided in the cylinder 243. The valve accommodating portion 252 is located on the outer peripheral side of the paint valve accommodating portion 249 and is substantially parallel to the paint valve accommodating portion 249. I have.

Reference numeral 253 denotes a cleaning fluid valve provided in the valve accommodating portion 252. The cleaning fluid valve 253 has a piston portion 253A, a valve body 253B and a valve spring 253, similarly to the cleaning fluid valve 45 according to the first embodiment. 253C. Further, the piston portion 253A defines the valve housing portion 252 as a spring chamber 253D and a pressure receiving chamber 253E. Further, the valve body 253
B has a cartridge-side cleaning fluid passage 251 at the tip end.
And its distal end is separated from and seated on the valve seat 251A.

Reference numeral 254 denotes a cartridge side pilot air passage according to the present embodiment connected to the cleaning fluid valve 253. One end of the pilot air passage 254 is connected to the cylinder 24.
An opening is provided on the bottom surface of the female connection portion 243E provided on the third gripping projection 243C. The other end of the pilot air passage 254 communicates with the pressure receiving chamber 253E of the cleaning fluid valve 253.

Next, reference numeral 261 denotes a paint filling device according to the present embodiment which is used in place of the paint filling device 51 according to the first embodiment.
1 differs from the paint filling device 51 according to the first embodiment in that the filling table 262 is not provided with a pilot air passage. The filling table 262 used in the present embodiment is formed by a leg (not shown), a column 263, and a pedestal 264. The filling table 262 has a filling table side feed tube insertion hole 265 formed in the axial direction, and the pedestal 264 has a cylinder support 266 formed therein.

Here, a bottom portion 266A, a female connection portion 266B, and a male connection portion 266C are formed on the cylinder support portion 266, similarly to the cylinder support portion 57 according to the first embodiment. In addition, the pedestal portion 264 of the filling table 262 includes
An air suction passage 267, a removal air supply passage 268, an extrusion thinner passage 269, and a filling-table-side cleaning fluid passage 270 are provided.

Next, reference numeral 271 denotes a cartridge gripping device according to this embodiment which is used in place of the cartridge gripping device 130 according to the first embodiment. The cartridge gripping device 271 is provided with a gripper 272. . Here, the gripper 272 is the gripper 1 according to the first embodiment.
31, a casing 273 and a pair of gripping claws 2 provided on the casing 273 so as to approach and separate from each other and grip the gripping protrusion 243 </ b> C of the cartridge 241.
74, 274 and the like.

However, the grip 272 according to the present embodiment is different from the grip 272 shown in FIG.
The female connection portion 243 of the cylinder 243 is attached to the casing 273.
E is provided with a male connection portion 273A that fits
It differs from the gripper 131 according to the first embodiment in that a gripper-side pilot air passage 275 described later is provided.

Reference numeral 275 denotes a gripper-side pilot air passage provided in the casing 273.
One end (upstream side) of 75 is connected to a pilot air source (not shown) similar to the cleaning fluid valve pilot air source 118 described in the first embodiment via a pilot air pipe (not shown). Have been. On the other hand, the pilot air passage 2
The other end (downstream side) of the male connector 75 is the male connector 2 of the casing 273.
73A is open at the tip end surface.

Therefore, the gripper-side pilot air passage 27
5 is a gripper 27 for gripping the cartridge 241.
2 to the holding projection 243 of the cylinder 243.
When brought into contact with C, it communicates with the cartridge-side pilot air passage 254. Thus, the gripper-side pilot air passage 275 can supply pilot air to the cleaning fluid valve 253.

As described in detail above, according to the present embodiment, the connection port of the cartridge-side pilot air passage 254 provided in the cartridge 241 is disposed at the female connection portion 243E of the holding projection 243C of the cylinder 243. Also,
The casing 273 of the gripper 272 is provided with a gripper-side pilot air passage 275 for supplying pilot air to the cartridge-side pilot air passage 254. Thus, the number of passages connected between the cartridge 241 and the paint filling device 261 can be reduced by eliminating the pilot air passage, so that the configuration relating to the passage connection portion can be simplified. In addition, it is possible to improve the degree of freedom at the time of design, the workability of assembly, and the like.

Next, a fifth embodiment of the present invention will be described with reference to FIG.
Will be described in detail. A feature of the present invention is that the cleaning fluid valve of the cartridge is formed as a check valve that opens when the cleaning fluid flows through the cleaning fluid passage toward the paint storage chamber and closes when the cleaning fluid flows in the opposite direction. It is in. Thus, the pilot air passage for the cleaning fluid valve provided on the filling table as in the first embodiment is eliminated. In the present embodiment, the same components as those in the above-described first embodiment are denoted by the same reference numerals, and description thereof will be omitted.

Reference numeral 281 denotes a cartridge according to the present embodiment which is used in place of the cartridge 31 according to the first embodiment. The cartridge 281 is substantially the same as the cartridge 31 according to the first embodiment, 282, a piston 285, an extrusion thinner passage 288, a paint valve 290, a cleaning fluid passage 291 and a check valve 293.

Reference numeral 282 denotes a body constituting the outer shape of the cartridge 281. The body 282 is composed of a cylinder 283 and a feed tube 284. The cylinder 283 has a male connection 283A, a female connection 283B, and a conical convex 283C.
It has. Further, the piston 28 is provided in the cylinder 283.
5, the piston 285 defines the interior of the cylinder 283 as a paint chamber 286 and an extruded thinner chamber 287. Further, one end of the cylinder 283 is attached to the cylinder 2.
A cartridge-side push-out thinner passage 288 is provided at the end face of the male connection portion 283 </ b> A 83 and communicates with the push-out thinner storage chamber 287 at the other end.

Reference numeral 289 denotes a paint valve accommodating portion provided on the tip side of the cylinder 283, and 290 denotes a paint valve provided in the paint valve accommodating portion 289. Here, the paint valve 290 is the first
It is formed similarly to the paint valve 41 according to the embodiment.

Reference numeral 291 denotes a cylinder 28 of the cartridge 281.
3, the cleaning fluid passage 291 has one end opened to the female connection portion 283B,
The other end communicates with the outer peripheral side of the bottom surface of the paint chamber 286.

Reference numeral 292 denotes a cleaning fluid passage 29 on the cartridge side.
1. The valve housing portion 292 provided in the middle of
Accommodates a check valve 293 to be described later, and an upstream end portion is a valve seat surface 292A.

Reference numeral 293 denotes a check valve as a cleaning fluid valve provided in the valve housing portion 292. The check valve 293 is a ball valve body 293A movably housed in the valve housing portion 292.
And a valve spring 293B for urging the ball valve body 293A toward the valve seat surface 292A.

The check valve 293 is normally provided with the valve spring 2.
The ball valve body 293A is moved to the valve seat surface 2
The valve is pressed against the valve 92A to close the valve, thereby preventing the paint in the paint chamber 286 from flowing back through the cleaning fluid passage 291. On the other hand, the check valve 293 opens the ball valve body 293A against the valve spring 293B when the cleaning air and the cleaning thinner are supplied to the paint accommodating chamber 286 through the cleaning fluid passageway 291. This permits the distribution of cleaning thinner.

Next, reference numeral 301 denotes a paint filling device according to the present embodiment which is used in place of the paint filling device 51 according to the first embodiment.
1 is different from the paint filling device 51 according to the first embodiment in that a pilot air passage is not provided in the filling table 302. The filling table 302 used in the present embodiment is formed by a leg (not shown), a column 303 and a pedestal 304. Further, a filling table side feed tube insertion hole 305 is formed in the filling table 302 in the axial direction, and a cylinder support section 306 is formed in the pedestal section 304.

Further, a bottom portion 306A, a female connection portion 306B, and a male connection portion 306C are formed on the cylinder support portion 306, similarly to the cylinder support portion 57 according to the first embodiment. The pedestal 304 of the filling table 302 includes:
An air suction passage 307, a detached air supply passage 308, an extrusion thinner passage 309, and a filling table side cleaning fluid passage 310 are provided.

As described in detail above, according to the present embodiment, the check valve 293 is used instead of the cleaning fluid valve 45 according to the first embodiment, so that the structure of the valve can be simplified. Can be. Also, the pilot air passage for the cleaning fluid valve provided on the filling table can be omitted,
The size and weight of the cartridge 281 can be reduced, the manufacturing cost can be reduced, and the like.

Next, a sixth embodiment of the present invention will be described with reference to FIG.
This will be described in detail with reference to FIG. A feature of the present invention is that the paint containing chamber is formed as a substantially circular space, and the cleaning fluid passage of the cartridge is opened at a position eccentric to the inner peripheral surface of the paint containing chamber in the tangential direction. Further, on at least one of the bottom surface of the paint chamber of the cartridge and the movable partition, a cleaning fluid is provided between the bottom surface of the paint chamber and the movable partition when the movable partition is displaced toward the feed tube. There is provided a gap forming body for ensuring a gap to flow. In the present embodiment, the same components as those in the above-described first embodiment are denoted by the same reference numerals, and description thereof will be omitted.

A cartridge 321 according to the present embodiment is used in place of the cartridge 31 according to the first embodiment. The cartridge 321 is substantially the same as the cartridge 31 according to the first embodiment, 322, piston 325, extrusion thinner passage 328, paint valve 330, washing fluid passage 331, washing fluid valve 333,
It is substantially constituted by a stopper projection 334.

Reference numeral 322 denotes a body constituting the outer shape of the cartridge 321. The body 322 comprises a cylinder 323 and a feed tube 324. The cylinder 323 has a male connection portion 323A, a female connection portion 323B, and a conical convex portion. 323C is provided.

A piston 325 is slidably inserted in the cylinder 323 so as to be slidable in the axial direction. The piston 325 pushes the inside of the cylinder 323 out of the paint chamber 326 and the thinner chamber 3.
27. Here, the paint storage room 326 is
It is formed as a substantially circular space, and a stopper projection 334 described later is provided on the bottom surface 326A.

Reference numeral 328 denotes a cartridge-side extrusion thinner passage through which the extrusion thinner supplied to and discharged from the extrusion thinner accommodating chamber 327 flows.
An opening is provided at the distal end face, and the other end is in communication with the extrusion thinner storage chamber 327.

Reference numeral 329 denotes a paint valve accommodating portion provided on the tip side of the cylinder 323, reference numeral 330 denotes a paint valve provided in the paint valve accommodating portion 329, and the paint valve 330 is a paint valve according to the first embodiment. 41 are formed in the same manner.

Reference numeral 331 denotes a cylinder 32 of the cartridge 321.
3, one end of the cleaning fluid passage 331 is opened to the female connection portion 323B, and the other end thereof communicates with the bottom side of the paint accommodating chamber 326. .

Here, the cartridge side cleaning fluid passage 33
32, as shown in FIG. 32, the discharge port 331A opened to the paint storage chamber 326 is disposed at a position eccentric in the tangential direction of the paint storage chamber 326. Accordingly, when the cleaning air and the cleaning thinner are supplied from the discharge port 331A into the coating chamber 326, the cleaning fluid passage 331 forms a swirling flow in the coating chamber 326 by the cleaning air and the cleaning thinner.

Reference numeral 332 denotes a valve housing provided in the cylinder 323, and 333 denotes a cleaning fluid valve provided in the valve housing 332. Here, the cleaning fluid valve 333 is formed similarly to the cleaning fluid valve 45 according to the first embodiment.

. 334, 334,... Are a plurality of stopper projections forming a gap forming member provided on the bottom surface 326A of the paint accommodating chamber 326. Four stopper projections 334 are provided at substantially equal intervals in the circumferential direction. ing. When the piston 325 is moved toward the feed tube 324 in order to return the paint in the paint chamber 326, the stopper protrusions 334 move the piston 325 at a position separated from the bottom surface 326A of the paint chamber 326 by a predetermined distance. And a gap suitable for flowing the cleaning fluid is ensured.

As described in detail above, according to the present embodiment, the stopper projection 3 is provided on the bottom surface 326A of the paint chamber 326.
34, the piston 325 and the paint chamber 3
A gap for allowing the cleaning fluid to flow between the bottom surface 326A and the bottom surface 326A can be easily and reliably formed.

Further, the discharge port 331 of the cleaning fluid passage 331 for discharging the cleaning air and the cleaning thinner into the paint accommodating chamber 326.
Since A is eccentrically arranged in the tangential direction, a swirl flow can be formed in the paint accommodating chamber 326, and the swirl flow can shorten the paint cleaning time and improve the cleaning efficiency.

In each embodiment, the case where the rotary atomizing head type coating apparatus 11 is attached to the horizontal arm 4 of the coating robot 1 has been described as an example. However, the present invention is not limited to this. Alternatively, the coating device 11 may be mounted on another coating work machine such as a reciprocator.

In the first embodiment, the case where the piston 35 is used as the movable partition has been described as an example. Alternatively, for example, the movable partition may be a bellows-like bellows and flexible. It is good also as a structure which makes it a bag body which has these, and connects these insides to the feed tube side. This configuration can be similarly applied to other embodiments.

In the first embodiment, the filling valve 61
Has been described by taking as an example a case in which a paint supply / discharge valve 64 and a waste liquid discharge valve 71, each of which is a control valve having a 2-port, 2-position, are used. However, the present invention is not limited to this. The switching valve may be constituted by one 3-port 3-position switching valve. This configuration can be similarly applied to the extrusion thinner supply / discharge valve 86 and the cleaning fluid supply valve 101, and can also be applied to other embodiments.

On the other hand, in the first embodiment, a case where the cleaning fluid supply valve 101 is constituted by the cleaning thinner supply valve 104 and the cleaning air supply valve 110 and thinner and air are supplied as the cleaning fluid will be described as an example. Although described, the present invention is not limited to this, and the cleaning fluid supply valve may be configured only with the cleaning thinner supply valve. This configuration can be similarly applied to other embodiments.

Further, in each embodiment, the case where thinner is used as an extruding liquid has been described as an example. However, other extruding liquids such as water may be applied in accordance with the type of paint, the method of applying a high voltage, and the like. May be.

[0284]

As described above in detail, according to the first aspect of the present invention, the cartridge is provided with a body having a cylinder and a feed tube extending from the cylinder, and a paint container for communicating the inside of the cylinder of the body with the feed tube. A movable partition wall defined between a chamber and an extruding liquid storage chamber into which an extruding liquid flows in and out; and supplying paint to the coating machine from a coating chamber provided in the body through a paint passage in a feed tube, or A normally-closed paint valve that opens when the storage chamber is filled with paint, an extruding liquid passage that flows in and out of the extruding liquid into and out of the extruding liquid storage chamber, and a cleaning fluid passage that supplies a cleaning fluid to the coating chamber. A normally closed cleaning fluid valve is provided in the cleaning fluid passage and opens the cleaning fluid passage when supplying the cleaning fluid to the paint storage chamber. Further, a paint filling device includes a filling stand on which the cartridge is mounted when filling the paint accommodating chamber of the cartridge with the paint, and a cartridge provided in connection with the filling stand and the paint valve being opened. A filling valve for filling paint through a paint passage in a feed tube into a paint storage chamber of the cartridge; and An extruding liquid supply / discharge valve for supplying / discharging the extruding liquid through an extruding liquid passage; A cleaning fluid supply valve for supplying a cleaning fluid to the chamber.

Therefore, when painting the paint filled in the cartridge, the cartridge used for painting is removed from the filling stand of the paint filling device, and this cartridge is attached to the painting machine. In this state, the extruding liquid is supplied to the extruding liquid storage chamber of the cartridge. Thereby, since the movable partition wall is displaced toward the feed tube, the paint in the paint chamber is supplied from the feed tube to the coating machine, and can be sprayed from the coating machine.

Here, at the time of the painting operation, the paint in the paint accommodating chamber is about to flow out from the cleaning fluid passage of the cartridge. However, since the normally closed cleaning fluid valve closes the cleaning fluid passage, it is possible to prevent the paint from leaking from the cleaning fluid passage.

Next, when filling the cartridge with paint, the cartridge is removed from the coating machine and attached to the filling stand of the paint filling device. In this state, the extruding liquid supply / discharge valve discharges the extruding liquid from the extruding liquid storage chamber. When the filling valve communicates the paint supply source side with the feed tube, the paint can be sucked into the paint storage chamber through the paint passage in the feed tube, and the paint can be filled in the cartridge. .

If there is a waiting time before the next painting operation, the cartridge filled with the paint is left attached to the filling table, and the filling valve connects the paint supply source side to the feed tube. State. In this state, the push-out liquid supply / discharge valve supplies the push-out liquid to the push-out liquid storage chamber of the cartridge, discharges the paint in the paint storage chamber via the movable partition, and returns the paint to the paint supply source side. In addition, the extruding liquid supply / discharge valve discharges the extruding liquid from the extruding liquid storage chamber to suck the paint again into the coating liquid storage chamber. In the coating standby state, the extruding liquid supply / discharge valve repeats the supply / discharge operation (breathing operation) of the paint, thereby preventing separation and precipitation of the pigment in the paint, thereby improving the coating quality. .

Further, when cleaning the paint accommodating chamber or the like of the cartridge, the cartridge is removed from the coating machine and attached to the filling table of the paint filling device. In this state, by opening the cleaning fluid supply valve, the cleaning fluid can be supplied to the paint storage chamber of the cartridge, and the cleaning fluid can flow vigorously from the paint storage chamber to the feed tube.
As a result, the paint adhering to the paint storage chamber and the feed tube can be reliably and quickly washed by the washing fluid that circulates vigorously, thereby reducing the amount of washing fluid used, thereby reducing costs and cleaning efficiency. Can be improved.

According to the invention of claim 2, the filling valve of the paint filling device is opened when the paint from the paint supply source is supplied to the paint storage chamber of the cartridge or when the paint in the paint storage chamber is returned to the paint supply source. It is constituted by a paint supply / discharge valve to be opened and a waste liquid discharge valve to be opened when a cleaning fluid is supplied to the paint storage chamber of the cartridge.

Therefore, when filling the cartridge with the paint, the cartridge is attached to the filling stand of the paint filling device. In this state, when the paint supply / discharge valve is opened, the paint can be supplied from the paint supply source to the paint storage chamber of the cartridge, or the paint can be discharged from the paint storage chamber and returned to the paint supply source. On the other hand, when the waste liquid discharge valve is opened to wash the cartridge, the cleaning fluid and waste paint supplied to the paint chamber of the cartridge can be discharged through a paint passage or the like in the feed tube.

According to the third aspect of the present invention, the extruding liquid supply / discharge valve of the paint filling device includes an extruding liquid supply valve that opens when supplying the extruding liquid to the extruding liquid storage chamber of the cartridge, and an extruding liquid supply valve of the cartridge. An extruding liquid discharging valve that opens when discharging the extruding liquid from the storage chamber.

Therefore, if there is a waiting time before the next painting operation, the cartridge filled with the paint is left attached to the filling table. In this state, when the extruding liquid supply valve is opened, the extruding liquid is supplied to the extruding liquid storage chamber of the cartridge, so that the extruding liquid can extrude the paint in the coating chamber through the movable partition.
On the other hand, when the extrusion liquid discharge valve is opened, the extrusion liquid is discharged from the extrusion liquid storage chamber of the cartridge.
The paint from the paint source can be drawn into the paint chamber with the discharge of the extruding liquid. By repeating these operations, it is possible to constantly flow the paint and prevent the pigment in the paint from separating and settling, thereby improving the coating quality and improving the reliability.

According to the invention of claim 4, the cleaning fluid supply valve of the paint filling device supplies the cleaning thinner supply valve for supplying the cleaning thinner to the paint chamber of the cartridge, and supplies the cleaning air to the paint chamber of the cartridge. It is constituted by at least one of the cleaning air supply valve.

Therefore, for example, when one cartridge is shared by a plurality of types of paints, or when the painting line is to be stopped for a long period of time, it is necessary to clean the cartridges. Therefore, the cartridge is mounted on the filling table of the paint filling device. When the cleaning air supply valve is opened in this state, the cleaning air is supplied to the paint storage chamber of the cartridge, and the paint remaining in the paint storage chamber, the paint passage in the feed tube, and the like can be pushed out and discharged. On the other hand, when the cleaning thinner supply valve is opened, the cleaning thinner is supplied to the paint storage chamber of the cartridge, and the paint adhering to the paint storage chamber, the feed tube and the like can be washed, and the paint storage chamber and the like are cleaned with cleaning air. The cleaning can be efficiently performed with the cleaning thinner.

According to the fifth aspect of the present invention, since the extruding liquid passage and the cleaning fluid passage of the cartridge are provided as separate passages in the body, the extruding liquid flowing through the extruding liquid passage flows through the cleaning fluid passage. Mixing of the cleaning fluid can be prevented, and coating quality can be improved.

[0297] According to the invention of claim 6, the push-out liquid passage and the washing fluid passage of the cartridge have a common opening which is commonly opened on the outer surface side of the body, and the washing fluid valve pushes the common opening through the liquid passage. And a switching valve for switching to a cleaning fluid passage. Therefore, when filling the cartridge with the paint, the cartridge is attached to the filling stand of the paint filling device. In this state, when the switching valve switches the common opening to the extruded liquid passage, the common opening communicates with the extruded liquid storage chamber of the cartridge via the extruded liquid passage, so that the extruded liquid flows into and out of the extruded liquid storage chamber. be able to. On the other hand, when the switching valve switches the common opening to the washing fluid passage, the common opening communicates with the paint accommodating chamber of the cartridge via the washing fluid passage. The paint adhered to the chamber, the feed tube and the like can be washed.

As a result, since the extruded liquid can be used as the cleaning fluid, the structure of the cleaning fluid supply valve can be simplified, and the cleaning fluid passage can be partially eliminated. It is possible to improve the degree of freedom in designing by simplifying the passage of the passage.

According to the seventh aspect of the present invention, the cleaning fluid valve of the cartridge is opened when the cleaning fluid flows through the cleaning fluid passage toward the paint storage chamber, and the paint flows from the paint storage chamber to the feed tube. It is formed as a check valve that closes when flowing. Accordingly, since the check valve is opened when the cartridge is attached to the filling table of the paint filling device and the washing fluid flows through the washing fluid passage toward the paint containing chamber, the check fluid is caused to flow into the paint containing chamber. Paint can be washed. On the other hand, when the paint flows from the paint storage chamber toward the feed tube, the check valve closes to prevent paint in the paint storage chamber from flowing in the cleaning fluid passage in the reverse direction. The paint can be prevented from leaking. In addition, the structure of the cleaning fluid valve can be simplified.

According to the eighth aspect of the present invention, the paint accommodating chamber of the cartridge is formed as a substantially circular space, and the cleaning fluid passage of the cartridge opens at a position eccentric to the inner peripheral surface of the paint accommodating chamber in the tangential direction. Since the cleaning fluid passage is configured to open tangentially to the inner peripheral surface of the paint storage chamber, the cleaning fluid flowing into the paint storage chamber from the cleaning fluid passage generates a swirling flow in the paint storage chamber. Can be formed. Thus, the paint in the paint chamber can be efficiently cleaned by the swirling cleaning fluid, so that the cleaning time can be reduced and the cleaning efficiency can be improved.

According to the ninth aspect of the present invention, at least one of the bottom surface of the paint storage chamber of the cartridge and the movable partition is provided with the paint storage chamber when the movable partition is displaced toward the feed tube. A gap forming body is provided between the bottom surface and the movable partition to secure a gap through which the cleaning fluid flows. Accordingly, the movable portion of the partition wall is displaced toward the feed tube, thereby making it possible to reduce the cleaning portion of the paint chamber. In addition, since the gap forming body secures a gap suitable for cleaning between the bottom surface of the paint chamber and the movable partition, the paint chamber and the like can be efficiently cleaned with a small amount of cleaning fluid, and workability is improved. be able to.

[0302] According to the tenth aspect of the present invention, there is provided a painting work machine to which a painting machine is attached when performing painting work.
The coating working machine is provided with a working machine-side extruding liquid passage communicating with the cartridge-side pushing liquid passage, and the working machine-side extruding liquid passage supplies the extruding liquid toward the cartridge attached to the coating machine. It is configured to be connected to the extrusion liquid supply device.

Therefore, when performing coating, the cartridge filled with the coating is attached to the coating machine. Then, the extruded liquid is supplied from the extruded liquid supply device to the extruded liquid storage chamber via the extruded liquid passage of the cartridge. Thereby, the movable partition is displaced to the feed tube side, and the paint in the paint storage chamber is pressed by the movable partition and is discharged from the feed tube toward the rotary atomizing head. A painting operation using a cartridge can be performed.

[0304] According to the eleventh aspect, the cartridge has a common opening provided on the outer surface side of the cylinder,
An extruding liquid passage connecting the common opening to the extruding liquid storage chamber; a washing fluid passage connecting the common opening to the paint accommodating chamber; and a switching valve for switching the common opening to the extruding liquid passage and the washing fluid passage. Provided. Further, the paint filling device is provided with a selection valve which is connected to the filling table and selects the extruding liquid from the extruding liquid supply / discharge valve and the cleaning air from the cleaning air supply valve and supplies them to the common opening of the cartridge. I have.

Therefore, by switching the extruded liquid supplied from the extruded liquid supply / discharge valve between the extruded liquid storage chamber side and the paint storage chamber side by the switching valve, the extruded liquid can be used as a cleaning fluid. As a result, various passages required when the cleaning fluid valve is separately provided can be omitted, and the configurations of the cartridge and the paint filling device can be simplified.

According to the twelfth aspect of the present invention, a gripping device for gripping a cartridge between a paint filling device and a coating machine is provided.
A gripper for gripping the cartridge, and a cleaning fluid passage on the gripper side connected to the cleaning fluid passage on the cartridge side when the cartridge is gripped by the gripper, wherein the cleaning fluid passage on the gripper side is a cartridge. Is connected to a cleaning fluid supply valve that supplies a cleaning fluid to the paint storage chamber.

Therefore, when the cartridge is gripped by the gripper of the gripping device, the cleaning fluid passage on the gripper side is connected to the cleaning fluid passage on the cartridge side, so that the cleaning fluid from the cleaning fluid supply valve is gripped. The paint can be supplied to the paint storage chamber through the cleaning fluid passage on the tool side and the cleaning fluid passage on the cartridge side, and the paint adhered to the paint storage chamber, the feed tube, and the like can be washed. As a result, the number of passages connected between the paint filling device and the cartridge can be reduced by the amount corresponding to the cleaning fluid passage, and the degree of freedom during design can be improved.

According to the thirteenth aspect of the present invention, a gripping device is provided between the coating machine and the paint filling device for gripping the cartridge, and the gripping device supplies pilot air to the cleaning fluid valve when the cartridge is gripped. A pilot air passage is provided. Therefore, when cleaning the paint storage chamber and the like of the cartridge, the cartridge is held by the holding device. Accordingly, when the pilot air is supplied to the cleaning fluid valve of the cartridge via the pilot air passage provided in the gripping device, the cleaning fluid valve can be opened to supply the cleaning fluid to the paint storage chamber, The paint adhered to the paint storage chamber, the feed tube and the like can be washed. As a result, the number of passages connected between the cartridge and the paint filling device can be reduced by the amount corresponding to the pilot air passage, and the degree of freedom in design can be increased.

[Brief description of the drawings]

FIG. 1 is a front view showing a cartridge type coating system according to a first embodiment of the present invention.

FIG. 2 is an enlarged vertical sectional view showing the rotary atomizing head type coating apparatus in FIG.

FIG. 3 is a longitudinal sectional view showing the cartridge in FIG. 1 alone.

FIG. 4 is an enlarged longitudinal sectional view showing a main part of a paint valve, a thinner valve, a quick coupling and the like in FIG. 2 in an enlarged manner.

FIG. 5 is an enlarged vertical sectional view showing a main part of the quick coupling shown in FIG. 4 in a closed state.

FIG. 6 is a longitudinal sectional view showing a cartridge, a paint filling device, and a gripping device.

FIG. 7 is an enlarged longitudinal sectional view showing a main part of the movable connection member, coil spring, feed tube, and the like in FIG. 6 in an enlarged manner.

FIG. 8 is an enlarged vertical sectional view showing a main part of the cartridge and the filling table in FIG. 6 in an enlarged manner.

9 is an enlarged longitudinal sectional view of the paint filling device in FIG. 6 in a state before a cartridge is mounted.

FIG. 10 is a longitudinal sectional view similar to FIG. 9, showing the paint filling device in a state where the paint in the cartridge is being discharged.

11 is a longitudinal sectional view similar to FIG. 9, showing the paint filling device in a state where the paint chamber of the cartridge is being cleaned.

FIG. 12 is a circuit diagram showing a paint filling device for filling a paint of a dedicated color which is relatively frequently applied.

FIG. 13 is a circuit diagram showing a paint filling device for filling paint with a relatively low frequency of painting.

FIG. 14 is a time chart showing an operation when a cartridge is filled with a paint by a paint filling device for filling a paint of a dedicated color which is relatively frequently applied.

FIG. 15 is a time chart showing an operation when a cartridge or the like is cleaned with thinner and air by a paint filling device for filling a paint of a dedicated color which is relatively frequently applied.

FIG. 16 is a time chart showing the operation of a paint filling apparatus for filling a paint having a relatively low coating frequency by changing colors.

FIG. 17 is a longitudinal sectional view showing a cartridge and a paint filling device according to a second embodiment of the present invention in a state where paint in the cartridge is being discharged.

18 is a longitudinal sectional view showing the cartridge in FIG. 17 alone.

19 is an enlarged longitudinal sectional view of a main part showing the cartridge and the paint filling device in FIG. 17 in a state where paint is pushed out.

20 is an enlarged longitudinal sectional view of a main part of the cartridge and the paint filling device in FIG. 17 in a state where paint is washed.

FIG. 21 is a circuit diagram showing a paint filling device for filling a paint of a dedicated color which is relatively frequently applied.

FIG. 22 is a circuit diagram showing a paint filling device for filling paint having a relatively low painting frequency.

FIG. 23 is a time chart showing an operation when a cartridge is filled with a paint by a paint filling device for filling a paint of a dedicated color which is relatively frequently applied.

FIG. 24 is a time chart showing an operation when a cartridge or the like is cleaned with air or thinner by a paint filling device for filling a paint of a dedicated color which is relatively frequently applied.

FIG. 25 is a longitudinal sectional view showing a cartridge, a paint filling device, and a gripping device according to a third embodiment of the present invention in a state where paint in the cartridge is discharged.

26 is a vertical sectional view showing the cartridge in FIG. 25 as a single unit.

FIG. 27 is an enlarged vertical cross-sectional view of a main part showing a state where the cartridge is gripped by the gripping device and the paint chamber of the cartridge is being cleaned.

FIG. 28 is a longitudinal sectional view showing a cartridge, a paint filling device, and a gripping device according to a fourth embodiment of the present invention in a state where a paint containing chamber of the cartridge is being cleaned;

FIG. 29 is a longitudinal sectional view showing the cartridge in FIG. 28 alone;

FIG. 30 is a longitudinal sectional view showing a cartridge and a paint filling device according to a fifth embodiment of the present invention in a state where a paint chamber of the cartridge is being cleaned.

FIG. 31 is a longitudinal sectional view showing a cartridge and a paint filling device according to a sixth embodiment of the present invention in a state where a paint accommodating chamber of the cartridge is being cleaned.

FIG. 32 shows the cleaning state of the paint storage chamber as indicated by an arrow XXX in FIG. 31.
FIG. 2 is a cross-sectional view as viewed from the direction of II-XXXII.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Coating robot (coating work machine) 11 Rotary atomizing head type coating device 16 Coating machine 23 Housing side extrusion thinner passage (working machine side extrusion liquid passage) 31a, 31b, ... 31n, 31p, 141a, 141
b,... 141n, 141p, 191, 241, 281,
321 cartridge 32, 142, 192, 242, 282, 322 body 33, 143, 193, 243, 283, 323 cylinder 34, 144, 194, 244, 284, 324 feed tube 34A paint passage 35, 145, 195, 245, 285,325 Piston (movable partition) 36,146,196,246,286,326 Paint storage chamber 37,147,197,247,287,327 Extrusion thinner storage chamber (extrusion liquid storage chamber) 38,198,248,288 , 328 Cartridge side extrusion thinner passage (extrusion liquid passage) 41, 149, 200, 250, 290, 330 Paint valve 43, 201, 251, 291, 331 Cartridge side cleaning fluid passage 45, 203, 253, 333 Cleaning fluid valve 51a , 51b, ... 51n 119,161a, 161
, 161n, 187, 211, 261, 301 Paint filling device 52a, 52b,... 52n, 52p, 162a, 162
b,... 162n, 162p, 212, 262, 302
Filling table 61, 120 Filling valve 64, 122r, 122s,... 122z Paint supply / discharge valve 71, 129 Waste liquid discharge valve 86, 180 Extruded thinner supply / discharge valve (extruded liquid supply / discharge valve) 89, 182 Extruded thinner supply valve (extruded liquid) Supply valve) 95,183 Extrusion thinner discharge valve (Extrusion liquid discharge valve) 100,270,310 Filling table side cleaning fluid passage 101 Cleaning fluid supply valve 104 Cleaning thinner supply valve 110,185 Cleaning air supply valve 130,224,271 Cartridge Gripping device 131, 225, 272 Gripping tool 151 Common opening 152 Branch extrusion thinner passage (extrusion liquid passage) 153 Branch cleaning fluid passage (cleaning fluid passage) 155 Switching valve (cleaning fluid valve) 176 Shuttle valve (selection valve) 228 Gripping tool Side cleaning fluid passage 275 Gripping tool side pilot air passage 293 Check Valve (cleaning fluid valve) 331A Discharge port 334 Stopper protrusion (gap forming body)

 ────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Osamu Yoshida F-term (reference) 4F034 AA01 BA27 BB05 BB28 4F035 BA15 in 2-39 Akasaka, Minato-ku, Tokyo

Claims (13)

[Claims] 1. A coating machine for spraying a coating material, a cartridge detachably mounted on the coating machine for supplying the coating material stored therein to the coating machine, and the cartridge being detachably mounted and emptied. In a cartridge type coating system comprising a paint filling device for filling a cartridge with paint, the cartridge comprises a body having a cylinder and a feed tube extending from the cylinder, and a paint communicating with the feed tube inside the cylinder of the body. A movable partition wall defined between the storage chamber and the extruding liquid storage chamber into which the extrusion liquid flows in and out; and a paint is supplied to the coating machine from the coating chamber provided in the body through a paint passage in a feed tube. A normally-closed paint valve that opens when the paint chamber is filled with paint, and a push valve that flows in and out of the extrusion fluid into the extrusion fluid chamber. A normally closed cleaning fluid valve provided in the cleaning fluid passage for opening the cleaning fluid passage when supplying the cleaning fluid to the paint storage chamber; The paint filling device is configured such that when filling the paint storage chamber of the cartridge with paint, the cartridge is attached to the filling stand, and the paint valve provided to be connected to the filling stand is opened. A filling valve that fills the paint storage chamber of the cartridge with a paint through a paint passage in a feed tube in a state where the paint valve is opened while the paint valve is connected to the filling table and the valve is opened. An extruding liquid supply / discharge valve for supplying / discharging the extruding liquid to / from the extruding liquid storage chamber through the extruding liquid passage; Cartridge type coating system which is characterized by being configured through the body passageway by the wash fluid supply valve for supplying cleaning fluid to the paint chamber. 2. A paint supply valve of the paint filling device, wherein the paint valve is opened when the paint from the paint supply source is supplied to the paint storage chamber of the cartridge or when the paint in the paint storage chamber is returned to the paint supply source. 2. The cartridge type coating system according to claim 1, comprising a valve and a waste liquid discharge valve which opens when a cleaning fluid is supplied to the coating material chamber of the cartridge. 3. An extruding liquid supply / discharge valve of the paint filling device, wherein an extruding liquid supply valve which opens when supplying an extruding liquid to the extruding liquid storage chamber of the cartridge; 3. The cartridge type coating system according to claim 1, comprising an extruding liquid discharging valve that opens when discharging the liquid. 4. A cleaning fluid supply valve of the paint filling device,
A cleaning thinner supply valve for supplying a cleaning thinner to the paint chamber of the cartridge and a cleaning air supply valve for supplying cleaning air to the paint chamber of the cartridge. Terms 1, 2
Or the cartridge type coating system according to 3. 5. The cartridge type coating system according to claim 1, wherein the pushing liquid passage and the washing fluid passage of the cartridge are provided as separate passages in the body. 6. The flushing fluid passage and the flushing fluid passage of the cartridge have a common opening commonly opened on the outer surface side of the body, and the flushing fluid valve extends the common opening to the flushing fluid passage and the flushing fluid passage. 5. The cartridge type coating system according to claim 1, wherein the switching type switching valve is formed as a switching valve. 7. The cleaning fluid valve of the cartridge opens when the cleaning fluid flows toward the paint chamber through the cleaning fluid passage, and opens when the paint flows from the paint chamber to the feed tube. The cartridge type coating system according to claim 1, 2, 3, 4, or 5, which is formed as a check valve that closes. 8. The paint storage chamber of the cartridge is formed as a substantially circular space, and the cleaning fluid passage of the cartridge is opened at a position eccentric to the inner peripheral surface of the paint storage chamber in a tangential direction. 1,2,3,4,5,6
Or a cartridge type coating system according to 7. 9. The bottom surface of the paint chamber and the movable partition at least one of the bottom surface of the paint chamber and the movable partition of the cartridge when the movable partition is displaced toward the feed tube. 3. A gap forming body for securing a gap through which a cleaning fluid flows.
9. The cartridge type coating system according to 3, 4, 5, 6, 7 or 8. 10. A paint working machine to which said paint machine is attached when performing a painting operation, wherein said paint working machine is provided with a working machine side extruding liquid passage communicating with a cartridge side extruding liquid passage; An extrusion liquid passage on the working machine side is connected to an extrusion liquid supply device for supplying an extrusion liquid toward a cartridge attached to the coating machine. 10. The cartridge type coating system according to 8 or 9. 11. A coating machine for spraying a paint, a cartridge detachably mounted on the coating machine and supplying the paint stored therein to the coating machine, and the cartridge is detachably mounted and emptied. In a cartridge type coating system comprising a paint filling device for filling a cartridge with paint, the cartridge comprises a body having a cylinder and a feed tube extending from the cylinder, and a paint communicating with the feed tube inside the cylinder of the body. A movable partition wall defined between the storage chamber and the extruding liquid storage chamber into which the extrusion liquid flows in and out; and a paint is supplied to the coating machine from the coating chamber provided in the body through a paint passage in a feed tube. A normally-closed paint valve that opens when filling the paint chamber with paint, and a common open valve that is provided on the outer surface side of the cylinder. An extruding liquid passage connecting the common opening to the extruding liquid storage chamber; a washing fluid passage connecting the common opening to the paint accommodating chamber; and a switching valve for switching the common opening to the extruding liquid passage and the washing fluid passage. The paint filling device is configured such that when filling the paint storage chamber of the cartridge with paint, the cartridge is attached to the filling stand, and the paint valve provided to be connected to the filling stand is opened. A filling valve that fills the paint storage chamber of the cartridge with the paint through a paint passage in a feed tube, and supplies and discharges the extrusion liquid to the extrusion liquid storage chamber of the cartridge, or the paint storage chamber of the cartridge. An extruding liquid supply / discharge valve for supplying the extruding liquid to the cartridge as a cleaning liquid; a cleaning air supply valve for supplying cleaning air to the paint chamber of the cartridge; Is connected to the extruding liquid supply / discharge valve and the cleaning air supply valve and is provided with an outflow side connected to the filling table, and selects the extruding liquid supply / discharge valve and the cleaning air supply valve to select a common opening of the cartridge. And a selection valve connected to the cartridge. 12. A coating machine for spraying a coating material, a cartridge detachably mounted on the coating machine and supplying the paint stored therein to the coating machine, and the cartridge is detachably mounted and emptied. In a cartridge type coating system comprising: a paint filling device for filling a cartridge with paint; and a gripping device for gripping the cartridge between the paint filling device and the coating machine, wherein the cartridge extends from the cylinder and the cylinder. A movable body defined in a body having a feed tube, a paint chamber communicating with the feed tube in the cylinder of the body, and an extruding liquid chamber in which the extruding liquid flows in and out, and a paint provided in the body. When supplying paint to the coating machine from the storage chamber through the paint passage in the feed tube or filling the paint storage chamber with paint A normally-closed paint valve to be valved; an extruding liquid passage for flowing in and out of the extruding liquid into and out of the extruding liquid storage chamber; a cleaning fluid passage for supplying a cleaning fluid to the coating liquid storage chamber; A normally-closed cleaning fluid valve that opens a cleaning fluid passage when supplying a cleaning fluid to the cartridge. The paint filling device is provided with the cartridge when the paint is filled in the paint chamber of the cartridge. A filling table, a filling valve connected to the filling table, and filling the paint through a paint passage in a feed tube into the paint accommodating chamber of the cartridge while the paint valve is open; An extruding liquid is supplied to or pushed from the extruding liquid storage chamber through the extruding liquid passage to the extruding liquid storage chamber of the cartridge provided in a state where the paint valve is opened and connected to a base. An extruding liquid supply / discharge valve for discharging the liquid, wherein the gripping device is connected to a gripper for gripping the cartridge, and a cleaning fluid passage on the cartridge side when the cartridge is gripped by the gripper. A cleaning fluid passage on the gripper side, and an upstream side of the cleaning fluid passage on the gripper side is connected to a cleaning fluid supply valve for supplying a cleaning fluid to the paint storage chamber of the cartridge. A cartridge type coating system characterized by the following. 13. A pilot air for supplying pilot air to the cleaning fluid valve when the cartridge is gripped, the gripping device including a gripping device for gripping the cartridge between the coating machine and the paint filling device. 2. A method according to claim 1, wherein a passage is provided.
12. The cartridge type coating system according to 0 or 11.