JPH0623310A - Viscous product supply device - Google Patents

Abstract

PURPOSE:To miniaturize and simplify the structure of a viscous product supply device prevent the viscous product from being altered qualitatively and dispensing with washing a tank and piping by designing the structure in such a way that a viscous product storage container is tightly closed and the viscous product is squeezed out of a nozzle by pressure of a piston member using a liquid pressure. CONSTITUTION:A viscous product 1 supply device is composed of a viscous product storage container 2 with a nozzle 5 for injecting the viscous product attached to one end of the main container system where the viscous product 1 is contained and a piston member 6 for the viscous product introduced in the other end, and an airtight device 3 for sealing the other end of the main cylindrical container system 4 hermetically and at the same time, injecting a liquid for pressing the piston member 6. When extracting the viscous product 1 from the container 2, a liquid such as compressed air is injected into the other end of the viscous product storage container 2. Thus the viscous product 1 in main cylindrical container system 4 is pressed by the piston member 6 and then is squeezed out of the container 2 through the nozzle 5 to be supplied to a designated spot.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a viscous material supply device for supplying a viscous material such as an offset printing ink or an adhesive to an inking section, an adhesive application section or the like.

[0002]

2. Description of the Related Art Conventionally, as an ink supply device, Japanese Patent Laid-Open No.
There is one such as described in Japanese Patent Publication No. 233253.

This is because the ink is filled in the bag in advance, a pipe is drawn from the bag to an ink fountain of a printing machine, and when the ink is supplied, the ink in the bag is handled by handling the bag with a pair of nipping rollers. It is sent to a pipe and finally supplied to an ink fountain or the like.

Further, as a device for supplying an adhesive, the adhesive is stored in a tank, compressed air is sent into the tank, the adhesive is taken out from a pipe inserted into the tank, and the adhesive is continuously discharged from a nozzle. There is a device which is designed to be sprayed at a bonding location such as.

[0005]

However, in the above-mentioned conventional ink supply device, it is necessary to provide a nipping roller and a reciprocating mechanism of the nipping roller as a device for pressurizing a bag filled with ink. There is a problem that the structure becomes large and complicated.

Further, since the above-mentioned conventional adhesive supply device sends air into the tank, there is a problem that the adhesive in the tank comes into contact with the sent air and is deteriorated. There is also a problem that cleaning the tank, piping, etc. is troublesome when changing the type of adhesive.

[0007]

In order to solve the above-mentioned problems, according to the present invention, a viscous material dispensing nozzle is attached to one end of a cylindrical container body filled with a viscous material, A viscous material storage container having a viscous material pressurizing piston member inserted into the other end of the cylindrical container body, and a fluid for sealing the other end of the tubular container body and pressing the piston member. The constitution of a viscous material supply device including an airtight device for injecting into the other end is adopted.

[0008]

By combining the airtight tool with the viscous material storage container, the other end of the viscous material storage container is sealed.

When taking out the viscous material from the viscous material storage container, a fluid such as compressed air is injected into the other end of the viscous material storage container. As a result, the piston member pressurizes the viscous material in the tubular container body, and the viscous material is extruded from the nozzle out of the container and supplied to a predetermined location.

[0010]

EXAMPLES Examples of a viscous material supply apparatus according to the present invention will be described below with reference to the drawings.

Example 1 A case where the viscous material supply device is applied to an ink supply device of a printing machine will be described.

As shown in FIG. 1, the ink supply device includes a viscous material storage container 2 filled with an ink viscous material 1 and at least one of the viscous material storage containers 2. An airtight tool 3 for sealing the ends is provided.

As shown in FIG. 2, the viscous material storage container 2 is attached to a cylindrical container body 4 filled with the viscous material 1 which is ink and one end of the cylindrical container body 4. The nozzle 5 for pouring out the viscous material and the piston member 6 for pressurizing the viscous material inserted into the other end of the cylindrical container body 4 are provided.

The cylindrical container body 4 is a paper tube having a gas barrier film such as an aluminum foil adhered to its inner peripheral surface. The material is not limited to a paper tube, and can be made of metal, synthetic resin, or the like. When it is made of synthetic resin or the like, the contents can be made transparent so that the contents can be seen from the outside.

An end plate 7 made of metal is attached to one end of the cylindrical container body 4 by winding or the like. A hole is formed at the center of the end plate 7, and the nozzle 5 projects from the hole toward the outside of the cylindrical container body 4.

The nozzle 5 is an integrally molded product of synthetic resin and has a flange portion 5a and a nozzle portion 5b. The flange portion 5a is fixed to the inner surface of the end plate 7 by adhesion or the like.
The nozzle portion 5b penetrates the hole of the end plate 7 in the outward direction.

A sealing material 8 for sealing the inside of the cylindrical container body 4 is adhered to the flange portion 5a of the nozzle 5. The sealing material 8 is made of a laminated sheet of aluminum foil, thin paper or the like, and a cross-shaped notch (not shown) is provided at a portion facing the nozzle portion 5b so as to be broken by the pressure applied to the viscous material. ing.

A pipe 9 such as a hose is detachably connected to the nozzle portion 5b in order to easily supply the ink 1 to a desired portion. Further, a male screw 5c is provided there, and a nut 5d is screwed therein. By turning the nut 5d, the pipe 9 can be firmly fixed to the nozzle portion 5b.

The end plate 7 and the nozzle 5 may be integrally formed of synthetic resin or the like. Further, these may be integrally formed with the tubular container body 4. The piston member 6 has a cylindrical portion 6 a that abuts on the inner peripheral surface of the cylindrical container body 4.
And a closing plate portion 6b for closing the front end portion of the tubular portion 6a,
It is integrally molded with synthetic resin. The tubular portion 6a slidably contacts the inner peripheral surface of the tubular container body 4 and gradually moves toward the nozzle 5 as the ink 1 is consumed.

Incidentally, in order to prevent the outside air from entering from the piston member 6, the portion of the piston member 6 in contact with the inner peripheral surface of the cylindrical container body 4 is sealed, so that the sealing member 10 is provided on the closing plate portion 6b as necessary. It is attached.

Further, at the center of the closing plate portion 6b, when the piston member 6 advances to the location of the nozzle 5, the nozzle portion 5b is formed.
So that it can get inside and take out the ink 1 in it as well.
The protrusion 6c is provided. The protrusion 6c can be omitted.

The airtight device 3 is for sealing at least the other end of the cylindrical container body 4 and for injecting a fluid for pressing the piston member 6 into the other end. In this case, FIG. As shown, it is configured as a hermetically sealed container that covers the entire viscous material storage container 2 except the nozzle portion 5b.

The hermetically sealed container is made of a metal such as an aluminum alloy and has a cylindrical wall portion 3a, a front wall portion 3b and a rear wall portion 3a corresponding to the periphery, one end portion and the other end portion of the viscous material storage container 2, respectively. It has a wall portion 3c.

The front wall portion 3b can be attached to and detached from the cylindrical wall portion 3a with a screw, and a hole 3d through which the nozzle portion 5b penetrates is provided in the center thereof. A heater may be embedded in the cylindrical wall portion 3a. The heater can reduce the viscosity of the ink 1 in the viscous material storage container 2 and facilitate the ejection from the nozzle 5. The heating temperature is, for example, 20 °
It is around C.

A conduit 11 for injecting a fluid into the other end of the cylindrical container body 4 is connected to the rear wall 3c. In this case, the fluid is compressed air, and is adapted to flow from a compressed air supply source (not shown) such as a compressor through the conduit 11 into the other end of the tubular container body 4. The air pressure is, for example, 3 to 5 kg / cm ² . An electromagnetic valve 12 for controlling the discharge amount of the ink 1 is provided in the conduit 11. The solenoid valve 12 is adapted to be turned on and off by a signal from, for example, a light reflection type sensor that detects the level of ink in an ink fountain (described later).

A vacuum suction conduit is connected via a valve, if necessary. With this, when printing is completed, the valve can be opened, the ink at the tip of the nozzle 5 can be sucked into the nozzle 5, and the contact with the air can be cut off.

On the inner surface of the rear wall portion 3c, the tubular container body 4 is interposed between the rear wall portion 3c and the other end of the tubular container body 4.
A packing 13 for sealing the rear side of the piston member 6 is attached.

The airtight device 3 may locally cover only the other end of the cylindrical container body 4. Further, the material is not limited to metal, and may be made of synthetic resin or the like.
Furthermore, the viscous material storage container 2 inside can be made transparent so that it can be seen from the outside.

As shown in FIG. 1, the piston member 6 has a ring shape so that the remaining amount of the ink 1 in the contents can be detected when the viscous material storage container 2 and the airtight device 3 are not transparent bodies. The magnets 14 are attached, and correspondingly, the magnetic sensors 15 are attached to the outer surface of the cylindrical wall portion 3a of the airtight device 3 at a constant pitch along the generatrix thereof. Therefore, the remaining amount of the ink 1 can be known depending on which magnetic sensor 15 emits a signal.

A thread is connected to the piston member 6, the thread is pulled out to the outside of the cylindrical wall portion 3a of the airtight device 3 and disposed along the outer surface thereof, and the end of the thread that moves as the piston member 6 moves. The remaining amount of the ink 1 may be detected depending on the position of.

The airtight container 3 which is a hermetically sealed container holds the viscous material container 2 and, as shown in FIGS. 3 and 4,
It is adapted to reciprocate above an ink fountain 16 of a printing machine, and a feed screw 17 and a guide rod 18 for that purpose are suspended between left and right frames 19a and 19b of the printing machine. The sealed container is attached to a moving block (not shown) that engages with the feed screw 17 and the guide rod 18 through a hinge or the like so that its rotation can be adjusted. The feed screw 17 is configured to be normally and reversely rotated by a pulse motor 20 fixed to the frames 19a and 19b. As a result, the tip of the nozzle portion 5b protruding from the sealed container moves on the ink fountain 16 and the ink 1 is ejected into the ink fountain 16 in a fixed amount.

The ink ejected into the ink fountain 16 passes through a large number of rollers as shown in FIG.
To 1. Next, the operation of the ink supply device will be described.

First, the viscous material storage container 2 as shown in FIG. 2 is stored in the airtight device 3. Then, if necessary, the pipe 9 is connected to the nozzle portion 5b, and the tip of the pipe 9 is inserted into the ink fountain 16.

After this, the solenoid valve 12 is opened and compressed air is injected into the airtight device 3. As a result, the piston member 6 slides inside the cylindrical container body 4, and the ink 1 is pushed out from the nozzle portion 5b. At the time of extrusion, the ink breaks the sealing material 8 at the cross-shaped notch by the pressure.

The solenoid valve 12 is turned on based on a signal from a sensor mounted on the ink fountain 16 for detecting the ink level.
Turn OFF the N to control the discharge amount of ink 1.
Further, the viscous material storage container 2 reciprocates on the ink fountain 16 together with the airtight device 3 by driving the feed screw 17, and the nozzle portion 5
In b, the ink 1 is uniformly supplied into the ink fountain 16.

When the ink 1 in the viscous material storage container 2 is consumed, the airtight tool 3 is opened to replace the viscous material storage container 2 with a new one, and ink is continuously supplied. The airtight device 3 may be fixed to the frames 19a and 19b of the printing machine without being reciprocated as described above, and ink may be supplied into the ink fountain 16 from there through a pipe.

Example 2 A case where the viscous material supply device is applied to an adhesive supply device of a form making machine will be described.

As shown in FIG. 5, this adhesive supply device includes a viscous material storage container (not shown) and an airtight device 3 as in the first embodiment. The viscous material storage container is filled with a viscous adhesive, and the nozzle 5
b projects from the airtight device 3 to the outside.

On the other hand, a nozzle device 23 is installed on the running path of the continuous form 22, and the nozzle device 23 and the nozzle portion 5b are connected by a pipe 24. The nozzle device 23 has a structure as shown in FIG.

In FIG. 6, reference numeral 25 indicates a block portion through which the feed screw 26 and the guide rod 27 are inserted. A solenoid portion 28 is vertically connected to the block portion 25, and a nozzle portion is provided below the solenoid portion 28. 29 are connected.

The nozzle portion 29 is a needle valve, the nozzle hole 30 of which faces a predetermined portion of the continuous form 22, and the upper portion of the needle 32 for opening and closing the nozzle hole 30 is connected to the armature 33 in the solenoid portion 28. ing.

An empty space is formed above the nozzle portion 29,
A seal member 34, a collar 35, and a compression coil spring 36 are sequentially provided in the chamber from bottom to top. Seal material 34
Is for cutting off the inside of the solenoid part 29 from the valve chamber 37. The collar 35 is provided for transmitting the compressive force of the compression coil spring 36 to the needle 32 by being fixed to the needle 32. Thereby, the needle 32
Is to always close the nozzle hole 30.

The solenoid portion 28 is provided with an electromagnet 38 for raising the needle 32 via the armature 33. When the electromagnet 38 is excited, the needle 32 rises against the compression coil spring 36,
The nozzle hole 30 will be opened.

The electromagnet 38 is controlled by a control unit 39 described later. Further, the solenoid portion 28 is provided with an adjusting screw 40 for adjusting the stroke of the armature 33. This adjustment screw 4
By turning 0, the opening degree of the valve can be adjusted.

An ink inlet 41 is attached to the valve chamber 37, and the pipe 24 is inserted into the ink inlet 41.
Are connected at one end. The pipe 24 has a tank 3
A pressure sensor 44 for detecting the pressure inside is provided,
The solenoid valve 12 is controlled so as to keep the pressure in the tank 3 constant based on the signal from the pressure sensor 44.

Thus, the solenoid section 28 and the solenoid valve 12 of the nozzle device 23 are controlled by the control section 39, whereby the adhesive 42 is discharged from the nozzle holes 30 in the form of dots or lines.

For example, as shown in FIG. 5, the adhesive 42 is applied in a line along the row of the marginal punch holes 43 of the continuous form 22 running in the arrow direction. This continuous form 22 is then superimposed on other forms and divided into unit forms.

[0048]

As described above, according to the present invention, the viscous material container is hermetically sealed with an airtight device, a fluid such as compressed air is injected into the container, and the fluid pressure causes the viscous material container to pass through. Since a viscous material is pushed out from a nozzle by pressurizing an object, it is not necessary to provide a nipping roller and a reciprocating mechanism of the nipping roller for pressing an ink-filled bag as in the conventional case. Therefore, the structure of the ink supply device can be downsized and simplified. In addition, since the fluid such as compressed air for pushing out the viscous material does not come into contact with the contents in the viscous material storage container, it is possible to prevent the viscous material such as an adhesive from contacting with the compressed air. Deterioration can be prevented. Furthermore, when exchanging the viscous material, it is not necessary to wash the tank or the pipe for storing the viscous material.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of a main part of a viscous material supply device according to the present invention.

FIG. 2 is a vertical cross-sectional view of a viscous material storage container mounted on the viscous material supply device.

FIG. 3 is a schematic side view showing an example of supplying viscous ink to an ink fountain of a printing machine.

FIG. 4 is a view on arrow IV in FIG.

FIG. 5 is a perspective view showing another embodiment of the viscous material supply device according to the present invention.

FIG. 6 is a vertical cross-sectional view of a nozzle device used in the other embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Viscous material 2 ... Viscous material storage container 3 ... Airtight tool 4 ... Cylindrical container main body 5 ... Viscous material pouring nozzle 6 ... Viscous material pressurizing piston member

Claims (1)

[Claims] 1. A viscous material dispensing nozzle is attached to one end of a tubular container body filled with a viscous material, and a viscous material pressurizing piston is attached to the other end of the tubular container body. It includes a viscous material storage container in which a member is inserted, and an airtight device that seals at least the other end of the tubular container body and injects a fluid that presses the piston member into the other end. A viscous material supply device characterized by the above.