KR101505782B1 - Paint spray pump and paint spray system using the same - Google Patents

Abstract

The present invention relates to a painting pump to improve cleansing power. The present invention includes: a drive shaft which has cleaning fluid transfer path transferring cleaning fluid and multiple cleaning fluid discharge paths penetrating the outer surface of itself; a sealing unit which has a water incoming path through which paint or cleaning fluid is injected and a water discharge path through which paint or cleaning fluid is discharged; a first gear casing unit which has an input path connected with the water incoming path, an output path connected with the water discharge path, and a cleaning fluid transfer path transferring cleaning fluid; a gear mounting unit which includes a first gear rotated by the driving shaft and a second gear interlocked with the first gear; an auxiliary axis which has a cleaning fluid transfer path connected with the cleaning fluid transfer path of the first gear casing unit and multiple cleaning fluid discharge paths penetrating the outside surface of itself; an input path which is connected with the input path of the first gear casing unit; a second gear casing unit which has an output path connected to a cleaning fluid transfer path of the auxiliary axis, and the output path of the first gear casing unit, and a cleaning fluid transfer path connected with the cleaning fluid transfer path of the driving shaft; and a cleaning driving block which receives and supplies cleaning fluid to the cleaning fluid transfer path of the second gear casing unit and supplies cleaning fluid, supplied from the input path of the second gear casing unit, to the output path of the second gear casing unit.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a paint pump,

The present invention relates to a paint pump and a paint system using the same.

2. Description of the Related Art Conventionally, a painting system using an electrostatic painting method or the like has been employed as a target paint, such as an automobile body, by applying a high voltage to a conductive paint.

The coating system supplies a coating material supplied from a coating material supply source to a coating device such as a spray gun through a passage so that the coating material supplied to the target is sprayed by the coating device.

Such a painting system is generally provided with a switching valve for painting in a passage between the painting material supply source and the painting apparatus, which is a color changer, so that the supply and cutoff operations of the painting material supplied to the painting apparatus are controlled.

In general, a target to be painted by a paint supplied through a paint switching valve is colored in various colors.

Therefore, in order to coat the target with a plurality of different paint colors set, a paint supply portion, an outflow passage connected to the paint supply portion, a paint changeover valve, and a coating device are provided as many as the paint colors to be painted, The paint is supplied from the corresponding paint supply unit and supplied to the painting apparatus through the paint changeover valve to paint the target in a desired color.

However, as described above, such a conventional painting system requires a paint changeover valve, a passage, and a painting device by a quantity corresponding to a plurality of different colors set on the target, and thus the facility cost and installation space for such a painting system are increased A problem has occurred.

Therefore, in order to solve the problem of such a coating system, the following coating system has been adopted.

That is, the coating system includes a plurality of paint change-over valves and a painting device connected to a single outflow passage on a manifold having one outflow passage through which the paint moves.

Therefore, in such a coating system, only a desired one of the plurality of paint switching valves is opened, so that only the paint of a desired color is supplied from the paint switching valve to the coating apparatus through the outflow passage, .

However, since all of the paints used as a single coating device are supplied through one outflow passage, in order to coat the target with paint of a color different from that of the immediately previous paint, The spillway and paint system must be cleaned.

Therefore, when the technique described in Japanese Patent Application Laid-Open No. 2002-243062 is applied to such a painting system, since the valve portion and the outflow passage of the paint changeover valve are spaced apart by a predetermined distance, It is easy for the paint to remain inside and it is difficult to completely remove the paint remaining in the outflow passage.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art.

Another object of the present invention is to reduce the cleaning time of the paint pump.

A painting pump according to one aspect of the present invention includes a cleaning liquid delivery passage connected to a pump driving unit and rotated by the pump driving unit to deliver a cleaning liquid, a plurality of cleaning liquid discharge passages connected to the cleaning liquid delivery passage, A sealing portion having a drive shaft having the drive shaft inserted therein, an inlet passage through which a paint or a cleaning liquid is injected, and a water discharge passage through which the injected paint or the cleaning liquid is discharged, a drive shaft located behind the seal portion, A first gear casing portion having an input passage connected to the passage, an output passage connected to the water discharge passage, and a rinse solution delivery passage for transferring the rinse solution, and a second gear casing portion positioned behind the first gear casing portion, A gear mounting portion having a first gear and a second gear engaged with the first gear, A cleaning liquid delivery passage connected to the cleaning liquid delivery passage of the first gear casing portion and a plurality of cleaning liquid delivery passages connected to the cleaning liquid delivery passage and passing through the outer surface of the cleaning liquid delivery passage, An input passage connected to the input passage of the first gear casing portion, an output passage connected to the cleaning fluid passage of the auxiliary shaft and the output passage of the first gear casing portion, and an output passage connected to the output passage of the first gear casing portion, A second gear casing part having a cleaning liquid delivery passage connected to the cleaning liquid delivery passage of the drive shaft, and a bypass valve and a cleaning valve, wherein, in accordance with the operation state of the bypass valve and the cleaning valve, 2 to the cleaning liquid delivery passage of the second gear casing portion, The cleaning liquid is supplied from the first drive includes a cleaning block for supplying a second gear casing portion output path.

The cleaning drive block is connected to the first valve mounting groove into which the bypass valve is inserted, the second valve mounting groove into which the cleaning valve is inserted, the cleaning liquid delivery passage of the second gear casing portion, and the second valve mounting groove An input passage and an output passage of the second gear casing portion and a direction switching passage connected to the first valve mounting groove, a rinse solution injection passage in which a rinse solution is injected and connected to the second valve mounting groove, A first air inlet passage connected to the one valve mounting groove, and a second air inlet passage connected to the second valve mounting groove.

The direction switching passage of the cleaning drive block extends in the thickness direction from the front surface of the cleaning drive block and is connected to the input passage of the second gear casing portion. The first portion is laterally spaced apart from the first portion A second portion extending through the front surface of the cleaning drive block and connected to the output passage of the second gear casing portion, and a first portion extending in the transverse direction between the first portion and the second portion, And a third portion connected to the first valve mounting groove.

When the air is injected into the first air injection valve, the directional control valve maintains the conduction state by the operation of the bypass valve. When the air is injected into the second air injection valve, It is preferable that the cleaning liquid injection path of the driving block and the output path of the cleaning driving block maintain a conductive state.

The sealing portion may further include a first connection passage connecting the intake passage and the input passage of the first gear casing portion and a second connection passage connecting the output passage of the first gear casing portion with the water discharge passage .

The rinse solution delivery passage of the first gear casing portion may include a first portion extending in the thickness direction from the rear and a second portion extending in the longitudinal direction and connected to the rinse solution discharge passage of the first portion and the drive shaft .

The cleaning liquid delivery passage of the drive shaft extends in the thickness direction from the rear side of the drive shaft and the plurality of the cleaning liquid discharge passages of the drive shaft are spaced apart from each other and extend radially so as to penetrate the outer surface of the drive shaft.

Wherein the cleaning liquid passage of the auxiliary shaft has a first portion extending in the thickness direction from the front surface of the auxiliary shaft and a second portion extending in the first portion from the outer surface of the auxiliary shaft and connected to the output passage of the second gear casing portion, And a second portion that is in contact with the first portion.

The plurality of cleaning liquid discharge passages of the auxiliary shaft are connected to the first portion and are spaced apart from each other and extend radially so as to penetrate the outer surface of the auxiliary shaft.

According to another aspect of the present invention, there is provided a coating system including a plurality of paint supply pipes for supplying a plurality of paints, a cleaning liquid supply pipe for supplying a cleaning liquid, a discharge pipe for discharging paint or cleaning liquid, And a paint pump having a water supply passage connected to the discharge pipe and a water discharge passage connected to the discharge pipe, and a paint device connected to the water discharge passage.

At this time, the painting pump is connected to the pump driving unit, rotated by the pump driving unit, and is connected to the cleaning liquid delivery passage for delivering the cleaning liquid, and a plurality of cleaning liquid discharge passages connected to the cleaning liquid delivery passage, A sealing portion having a drive shaft inserted therein, an inlet passage through which a paint or a cleaning liquid is injected, and a water discharge passage through which the injected paint or cleaning fluid is discharged, a drive shaft located behind the seal portion, connected to the intake passage, A first gear casing portion having an input passage, an output passage connected to the water discharge passage, and a rinse solution delivery passage for transferring a rinse solution, a first gear positioned behind the first gear casing portion and connected to the drive shaft, A gear mounting portion including a second gear engaged with the first gear, A cleaning liquid delivery passage connected to the second gear and connected to the cleaning liquid delivery passage of the first gear casing portion, and a plurality of cleaning liquid delivery passages connected to the cleaning liquid delivery passage and passing through the outer surface of the cleaning blade, An input passage to which the auxiliary shaft is mounted and which is connected to the input passage of the first gear casing portion, an output passage connected to the cleaning fluid passage of the auxiliary shaft and the output passage of the first gear casing portion, A second gear casing portion having a cleaning liquid delivery passage connected to the delivery passage, and a bypass valve and a cleaning valve are mounted, and in accordance with the operation state of the bypass valve and the cleaning valve, To the cleaning liquid delivery passage of the second gear casing portion Includes a cleaning drive block for supplying a cleaning liquid to the second gear casing portion output path.

The cleaning drive block is connected to the first valve mounting groove into which the bypass valve is inserted, the second valve mounting groove into which the cleaning valve is inserted, the cleaning liquid delivery passage of the second gear casing portion, and the second valve mounting groove An output passage of the second gear casing portion, an output passage connected to the valve mounting groove, a direction changing passage connected to the valve mounting groove, a rinse solution injection passage having a rinse solution injected thereinto and connected to the second valve mounting groove, A first air injection passage connected to the mounting groove, and a second air injection passage connected to the second valve mounting groove.

The sealing portion may further include a first connection passage connecting the intake passage and the input passage of the first gear casing portion and a second connection passage connecting the output passage of the first gear casing portion with the water discharge passage .

According to this feature, since the cleaning operation of the drive shaft, the auxiliary shaft, and the first and second gear inner diameters and outer diameters is performed, the cleaning force of the paint pump is improved.

Further, since the path of the cleaning liquid is almost linearly connected and formed inside each component and is not exposed to the outside, the cleaning time is shortened.

1 is a conceptual diagram of a painting system according to an embodiment of the present invention.
2 is a perspective view of a painting pump according to an embodiment of the present invention.
3 is an exploded perspective view of the painting pump shown in Fig.
Fig. 4 is a cross-sectional view of the painting system shown in Fig. 2 cut along the line IV-IV.
Fig. 5 is a cross-sectional view of the painting system shown in Fig. 2 cut along the line VV.
6 is a cross-sectional view of the painting system shown in Fig. 2 cut along the line VI-VI.
FIG. 7 is a cross-sectional view of the coating system shown in FIG. 2 taken along line VII-VII.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and similar parts are denoted by like reference characters throughout the specification.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, but it should be understood that there may be other elements in between do. On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.

Hereinafter, a coating pump and a coating system using the same according to an embodiment of the present invention will be described with reference to the accompanying drawings.

First, a coating system according to an embodiment of the present invention will be described in detail with reference to FIG.

The painting system according to an embodiment of the present invention shown in FIG. 1 includes a color changer 10 for changing and supplying various colors of paints, a paint pump 20 connected to the color changer 10, A pump drive part 40 connected to the paint pump 20, a path switching valve 50 located between the color changer 10 and the painting device 30, a paint device 30 connected to the paint pump 20, Respectively.

The color changer 10 includes a plurality of paint supply pipes 11 to which paints of different colors are supplied, a cleaning liquid supply pipe 12 to which a cleaning liquid is supplied, and a discharge pipe 13 through which the supplied paint or cleaning liquid is discharged.

At this time, the connection between the paint supply pipe 11 and the cleaning liquid supply pipe 12 and the paint pump 20 is carried out by the inflow passage L11 and the connection between the discharge pipe 13 and the paint pump 20 is carried out through the exit passage L12 ). At this time, the connection between the exit passage L12 and the exit pipe 13 and the connection between the exit passage L12 and the painting device 30 are determined by the operation state of the passage switching valve 50. [

The color changer 10 is operated under the control of a control unit (not shown) to change the operation state so that one of the paint supply pipe 11 and the cleaning liquid supply pipe 12 is connected to the inflow passage L11, ) And the exit passage L12.

As a result, one of the paint supply pipe 11 and the cleaning liquid supply pipe 12 is connected to the inlet passage H11 of the paint pump 20 through the inlet passage L11 so that the paint supply pipe 11 or the cleaning liquid supply pipe 12 And the discharge pipe 13 is connected through the discharge passage L12 connected to the discharge passage H12 of the paint pump 20. The discharge pipe 13 is connected to the paint pump 20 through the discharge passage L12, The cleaning liquid discharged from the water discharge passage H12 of the paint pump 20 is transferred to the discharge pipe 13 through the discharge passage L12 and discharged to the outside.

When the painting operation is performed by the painting apparatus 30, the painting apparatus 30 is connected to the water discharge passage H12 of the painting pump 20 by the operation of the path switching valve 50. [

Therefore, when a target such as an automobile is to be painted with a desired color by a control operation of the control unit, the paint supply pipe 11 to which a paint of a desired color is supplied from a plurality of paint supply pipes 11 is connected to the inflow path L11 And the water discharge passage H12 of the paint pump 20 is connected to the paint device 30 so that the paint can be supplied to the paint device 30 via the paint pump 20. [

The cleaning liquid supply pipe 12 is connected to the inlet passage L11 and the discharge pipe 13 is connected to the water discharge passage H12 of the paint pump 20, The cleaning liquid is supplied from the color changer 10 to the paint pump 20 to clean the paint pump 20 and then the cleaning liquid is discharged through the discharge pipe 13 to the outside, So that the cleaning operation of the coating material supplied to the cleaning device can be performed.

In order to change the types of the supply pipes 11 and 12 connected to the inlet passage L11 and the types of the apparatuses connected to the discharge passage L12 (that is, the discharge pipe 13 and the coating apparatus 20) A solenoid valve can be disposed between the inlet pipes L11 and L11 of the supply pipes 11 and 12 and between the discharge pipe 13 and the coating device 30, Only the desired solenoid valve among the plurality of solenoid valves can be opened to control the connection state of the inlet passage L11 and the exit passage L12 to the desired state.

However, instead of such a solenoid valve, a path switching device that can switch a path in a desired direction, such as a hydraulic valve whose operating state changes depending on whether the hydraulic pressure is supplied or a pneumatic valve whose operating state changes depending on whether air is supplied or not is used .

The path switching valve 50 is also connected to a solenoid valve (not shown) for changing the object to be connected to the water discharge passage H12 of the painting pump 20 to the discharge tube 13 or the painting device 30, , A hydraulic valve or a pneumatic valve or the like.

In the case of FIG. 1, both the desired paint and the cleaning liquid are supplied to the paint pump 20 in one color changer 10, but not limited thereto, in an alternative embodiment, the paint and the cleaning liquid Can be supplied as a paint pump. In this case, the passage through which the paint flows may differ from the passage through which the cleaning liquid flows.

The structure of the color changer 10 for supplying the cleaning liquid and the paint with the painting pump 20 shown in FIG. 1 and discharging the cleaning liquid after the cleaning operation is just one example, and thus the present invention is not limited thereto. The structure for supplying the paint to the paint pump 20 and for supplying the paint discharged from the paint pump 20 to the paint device 30 for the paint operation is also not limited to Fig.

The paint pump 20 is a metering pump that discharges paint or cleaning liquid supplied through an inlet passage L11 or each of its paths through a water discharge passage H12 by a predetermined amount.

The supply amount of the coating pump 20 to the coating apparatus 30 may be changed according to the operation of the pump driving unit 40.

That is, the drive shaft 23 of the paint pump 20 is connected to a pump drive unit 40 including a motor and rotates at a predetermined rotation speed (rpm) according to the operation state of the pump drive unit 40, (20) supplies the coating material and the cleaning liquid, which are determined according to the rotation speed of the drive shaft (23), to the coating apparatus (30) or discharges the coating liquid through the discharge tube (13).

Therefore, in the case of this embodiment, the supply amount of the paint or the cleaning liquid discharged from the painting pump 20 can be changed by using the control unit that operates the pump driving unit 40. [

The detailed structure of the painting pump 20 will be described in detail later.

The painting apparatus 30 connected to the paint pump 20 is formed of, for example, a bell or the like which is an electrostatic coating apparatus. The painting apparatus 20 discharges paint supplied through the water discharge passage H12 of the paint pump 20, And the target is sprayed toward the target, and the target is painted with the paint of the desired color.

Next, the structure of the painting pump 20 will be described in detail with reference to FIGS. 2 to 7. FIG.

As shown in FIGS. 2 and 3, the painting pump 20 includes a sealing portion 210, a sealing portion 210, and a sealing portion 210 on which a bracket 21 and a flange 22 are mounted, A front gear casing portion 220 (for example, a first gear casing portion) 220 coupled to the drive shaft 23 and a front gear casing portion 220 The gear mounting portion 230 having the first and second gears G11 and G12 and the first and second gears G11 and G12 embedded therein and the rear gear casing A cleaning drive block 250 positioned on the rear side of the rear gear casing 240 and a bushing 250 coupled to the cleaning drive block 250. [ And includes a bypass valve (first valve) 261 and a cleaning valve (second valve) 262.

The bracket 21 is connected to the drive shaft 23 and coupled to the pump drive unit 40 (for example, a motor) that rotates the drive shaft 23 at a desired rotation speed. The bracket 21 is connected to the pump drive unit 40 Is mounted on the painting pump 20.

In the center of the bracket 21, there is formed an insertion hole through which the driving shaft 23 is inserted and connected to the pump driving unit 40.

The flange 22 is an apparatus for coupling the bracket 21 and the sealing portion 210 and is provided with a flange 22 which is provided on the front surface of the body 221 having a circular shape (i.e., the surface adjacent to the bracket 21) The protruding first fastening part 222 has a second fastening part 223 protruding toward the sealing part 210 from the rear surface of the body 221 (that is, the surface opposite to the front surface and adjacent to the sealing part 210) And an insertion hole 224 formed to penetrate the first and second fastening portions 222 and 223 in the thickness direction T. [

The first fastening part 222 is inserted into the insertion hole of the bracket 21 so that the first fastening part 222 and the bracket 21 are fastened together and the second fastening part 223 is fastened to the sealing part 210 So that the flange 22, the sealing portion 210, and the drive shaft 23 are fastened together.

The sealing part 210 is positioned in the center of the seating groove 211 in which the body 221 of the flange 22 is mounted and in the center of the seating groove 211, And a hole (212).

The body 211 of the flange 22 having the first and second fastening portions 222 and 223 is mounted in the seat groove 211. At this time, the second fastening portion 223 is inserted into the insertion hole 212 so that the flange 22 can be stably coupled to the sealing portion 210. [

The sealing portion 210 is also connected to the inlet passage L11 and is connected to the inlet passage H11 and the outlet passage L12 for introducing the paint of the corresponding color supplied from the color changer 10 through the inlet passage L11, A drainage passage H12 connected to the drainage passage H11 for discharging the paint or the cleaning liquid discharged from the paint pump 20 to the discharge passage L12, 1 connecting passage H13 and a second connecting passage H14 connected to the water discharge passage H12 and passing through the rear surface of the sealing portion 21. [

At this time, the water inlet passage H11 and the water outlet passage H12 are spaced apart from each other in the transverse direction X and connected to the first and second connection passages H13 , And H14 are inclined to the inside of the sealing part 210 by an oblique line.

The first and second connection passages H13 and H14 are spaced from each other in the transverse direction X and are connected to the intake passage H11 and the water discharge passage H12 as described above to extend in the thickness direction T, And penetrates the rear surface of the portion 210.

The insertion hole 212 is formed below the first and second connection passages H13 and H14 and is spaced apart from the first and second connection passages H13 and H14. The drive shaft 23 is inserted into the insertion hole 212, And the bracket 21 so as to be connected to the rotation shaft of the pump driving unit 40.

The driving shaft 23 is connected to the motor driving unit 40 and is rotated in the corresponding state (that is, the corresponding direction and speed) in accordance with the rotating operation of the motor driving unit 40, and has a circular bar shape have.

One end of the drive shaft 23 (that is, an end coupled with the sealing portion 210) passes through the coupling hole 221 of the front gear casing portion 220 and the insertion hole 212 of the sealing portion 210 in order And is connected to the pump driving part 40 mounted on the sealing part 22.

The other end portion 31 of the drive shaft 23, that is, the portion located opposite to the one end portion is fixedly coupled to the gear G11 by the circular key 32 and positioned adjacent to the inner diameter of the gear G11.

The other end portion 31 of the drive shaft 23 is positioned at a substantially central portion inside the drive shaft 23 and extends toward the gear attachment portion 230 along the thickness direction T to be engaged with the rear surface of the drive shaft 23 And a cleaning liquid supply passage H231 extending from the cleaning liquid supply passage H231 and extending radially so as to penetrate the outer surface of the drive shaft 23 from the cleaning liquid supply passage H231 And a plurality of cleaning liquid discharge passages H232.

The cleaning liquid drive passage H231 is formed in the thickness direction T from the rear surface of the drive shaft 23 adjacent to the cleaning drive block 250 to the inside of the drive shaft 23 by a predetermined length. Therefore, although the cleaning liquid transmission passage H231 is exposed from the rear surface of the drive shaft 23, the cleaning liquid transmission passage H231 is not exposed from the front surface of the drive shaft 23 located on the opposite side of the rear surface.

At this time, the length of the rinsing liquid transfer passage H231 may be determined according to the width W of the gear G11 to which the other end 31 is inserted.

The plurality of cleaning liquid discharge passages H232 are spaced apart from each other and penetrate from the cleaning liquid transfer passage H231 to the outer surface of the drive shaft 23. [ Therefore, the plurality of cleaning liquid discharge passages H232 are exposed on the outer surface of the drive shaft 23. [

The cleaning liquid supplied to the cleaning liquid transfer passage H231 is discharged to the outer surface of the drive shaft 23 through the plurality of cleaning liquid discharge passages H232 so that the drive shaft 23 and the other end 31 of the drive shaft 23 So that the inner diameter of the inserted gear G11 can be cleaned.

Since one of the plurality of rinse solution discharge passages H232 is connected to the second portion 21b of the rinse solution delivery passage H21 of the front gear casing unit 220, And moves to the front gear casing unit 220 so that the cleaning liquid is transferred to the rear gear casing unit 240.

The first and second gears G11 and G12 have the same shape and are arranged side by side in the longitudinal direction and engaged with each other as shown in Fig.

The first and second gears G11 and G12 are mounted on the gear mounting portion 230 and are inserted into the center portion of the gear case 230. The insert shaft 231 and the auxiliary shaft 241, Holes 111 and 121, respectively.

At this time, the first gear G11 is the driving gear and the second gear G12 is the driven gear.

Therefore, the gear mounting portion 230 has the first gear mounting hole 231 through which the memory mounting portion 230 is inserted in the thickness direction T and on which the first gear G11 is mounted, and the first gear mounting hole 231 And a second gear mounting hole 232 through which the second gear G12 is mounted by penetrating the gear mounting portion 230 in the thickness direction T. [

At this time, the first and second gear mounting holes 231 and 232, which are respectively located at the upper and lower portions, are connected in the vertical direction according to the shapes of the first and second gears G11 and G12, 8 " shape and has a tolerance with respect to the respective gears G11 and G12 to be mounted.

Therefore, the first and second gears G11 and G12 engaged with each other in the first and second gear mounting holes 231 and 232 can be smoothly rotated, and the paint or cleaning liquid can be quickly charged .

The front and rear gear casing units 220 and 240 are located on the front and rear sides of the gear mounting unit 230 in which the first and second gears G11 and G12 are built, 1 and the second gears G11, G12 are stably maintained.

The front gear casing unit 220 has an insertion hole 221 penetrating the front gear casing unit 220 in the thickness direction T and passing through one end of the driving shaft 23 as described above.

As a result, the first gear G11 is rotated according to the rotational state of the drive shaft 23, so that the first and second gears G11 and G12 engaged with each other are rotated to perform the discharge operation of the paint or the cleaning liquid .

The front gear casing unit 220 is internally provided with a thickness direction T from the rear surface of the front gear casing unit 220 (that is, the surface adjacent to the gears G11 and G12) to the inside of the front gear casing unit 220, And a second portion 21b connected to the first portion 21a and extending in the longitudinal direction Y (or longitudinal direction) in the front gear casing portion 220 The input passage H22 and the front gear casing portion 220 which are connected to the first connection passage H13 and penetrate through the cleaning fluid delivery passage H21 and the front gear casing portion 220 in the thickness direction T, And an output passage H23 penetrating in the thickness direction T and connected to the second connection passage H14.

The first portion 21a of the cleaning liquid transmission passage H21 is exposed through the rear surface of the front gear casing portion 220 and thus exposed to the rear surface of the front gear casing portion 220. The second portion 21b And is positioned apart from the insertion hole 221 on the insertion hole 221.

The first portion 21a and the second portion 21b of the cleaning liquid transfer passage H21 are connected to each other because they are connected to each other.

One end of the rinsing liquid delivery passage H21, that is, the end of the second portion 21b serves as an inlet through which the rinsing liquid is introduced, and the end of the first portion 21a, which is the other end of the rinsing liquid delivery passage H21, The cleaning liquid flowing into the inlet of the second portion 21b passes through the second portion 21b and passes through the first portion 21a and then flows through the outlet of the first portion 21a to the rear gear casing portion 240 ).

Input passage (H22) is, as described above, and passes through the first connecting passage (H13) of the sealing unit 210, an output passage (H23) of the second connecting passage (H14) and through the sealing part 210 .

The input passage H22 receives the cleaning liquid or paint transferred through the first connection passage H13 of the sealing portion 210 and transmits the cleaning liquid or paint to the rear gear casing portion 240. The output passage H23 is connected to the rear gear The cleaning liquid or paint cut by the casing unit 240 is received and transferred to the second connection passage H14 of the sealing portion 210 so that the discharge operation to the water discharge passage H12 can be performed.

The rear gear casing portion 240 is positioned so as to protrude toward the front gear casing portion 220 in correspondence with the insertion hole 121 of the second gear G12 and is inserted into the insertion hole 121 of the second gear G12 A shaft 241 and an insertion hole 242 into which the other end portion 31 of the drive shaft 23 is inserted are arranged side by side in a spaced apart relationship in the lateral direction X and the rear gear casing portion 240 is passed through in the thickness direction T And the rear gear casing portion 240 is extended from the one end of the insertion hole 242 (i.e., the portion adjacent to the cleaning drive block 250) in the thickness direction T to the input passage H41 and the output passage H42, (A surface adjacent to the cleaning driving block 250) of the cleaning operation block H43.

Similar to the drive shaft 23, the auxiliary shaft 241 is connected to a first portion 44a and a first portion 44a extending in the thickness direction T at substantially the center in the interior thereof, A cleaning liquid transfer passage H44 having a second portion 44b communicating with the output passage H42 through the outer surface of the auxiliary shaft 241 toward the outer surface of the auxiliary shaft 241 in the portion 44a, And a plurality of rinse solution discharge passages H45 connected to the rinse solution delivery passage H44 and extending radially from the rinse solution delivery passage H44 so as to penetrate the outer surface of the auxiliary shaft 241. [

Since the cleaning liquid passage H44 does not pass through the rear surface of the auxiliary shaft 241 (i.e., the surface adjacent to the cleaning driving block 250), the cleaning liquid passage H44 is not exposed at the rear surface of the auxiliary shaft 241, And communicates with the first portion 21a of the cleaning liquid transmission passage H21 of the front gear casing portion 220. [

The cleaning liquid in the cleaning liquid delivery passage H21 of the front gear casing unit 220 flows into the cleaning liquid delivery passage H44 of the auxiliary shaft 241 and flows through the plurality of cleaning liquid discharge paths H45 to the outer surface . As a result, a cleaning operation is performed on the inner surfaces (i.e., outer diameters) of the first and second gears G11 and G12 positioned adjacent to the auxiliary shaft 241. [

As described above, the other end of the drive shaft 23 is inserted into the insertion hole 242 to stably support the position of the drive shaft 23.

A part of the other end 31 of the drive shaft 23 is inserted into the insertion hole 242 and the cleaning liquid transmission passage H231 penetrating the rear surface of the drive shaft 23 is inserted into the insertion hole 242, The cleaning liquid passage H231 of the driving shaft 23 and the cleaning liquid passage H43 of the rear gear casing 240 communicate with each other.

To this end, the rinsing liquid delivery passage H231 of the drive shaft 23 and the rinsing liquid delivery passage H43 of the rear gear casing portion 240 are positioned to correspond to each other.

The cleaning liquid injected through the cleaning drive block 250 is supplied to the cleaning liquid passage H231 of the drive shaft 23 via the cleaning liquid passage H43 of the rear gear casing portion 240. [

The input passage H41 is connected to the input passage H22 of the front gear casing portion 220 and connected to each other and the output passage H42 is connected to the output passage H23 of the front gear casing portion 220, have.

The input passage H41 and the output passage H42 are connected to each other by two coupling portions 233 in which the first and second gear mounting holes 231 and 232 are in contact with each other, And is located corresponding to the space between the gears G11 and G12.

The cleaning liquid or paint is injected into the portions of the two connection portions 233 to rapidly fill the space formed between the gear attachment portion 230 and the first and second gears G11 and G12 and to fill the cleaning liquid and the road, The cleaning operation of the outer diameters of the gears G11 and G12 is performed.

Therefore, the cleaning liquid or paint injected through the intake passage H11 passes through the input passages H22 and H41 and is transmitted to the cleaning driving block 250,

The cleaning liquid or paint discharged through the cleaning driving block 250 passes through the output passages H42 and H23 and is discharged through the water discharge passage H12 of the sealing portion 210. [

The cleaning driving block 250 includes a first valve mounting groove 251 in which a bypass valve 261 is inserted and mounted and a second valve mounting groove 252 in which the cleaning valve 262 is inserted and mounted A first air injection passage H51 extending through the side surface of the cleaning driving block 250 and extending toward the first valve mounting groove 251 and connected to the first valve mounting groove 251, A second air inlet passage H52 extending downward from the upper surface of the cleaning drive block 250 and connected to the second valve mount groove 252, The cleaning liquid injecting passage H53 connected to the second valve mounting groove 252 and the cleaning liquid injecting passage H43 connected to the second valve mounting groove 252 are connected to the cleaning liquid passage H43 of the rear gear casing portion 240 and the second valve mounting groove 252, (250) to the rear gear casing portion (240) An output passage H54 extending in the thickness direction T so as to penetrate through the surface (the surface adjacent to the rear gear casing portion 240), an output passage H54 extending in the thickness direction T from the front surface of the cleaning drive block 250, A first portion 55a connected to the output passage H42 of the casing portion 240 and connected to the first valve mounting groove 251 to penetrate the front surface of the cleaning driving block 250, A second portion 55b extending in the direction T and electrically connected to the output passage H42 of the rear gear casing portion 240 and a first portion 55a extending in the lateral direction X and adjacent to each other, And a third portion 55c for communicating the second portion 55b with the second portion 55b.

The conduction state of the directional switching passage H55 is determined according to the operation state of the bypass valve 261 and the conduction state between the output passage H54 and the cleaning liquid injection passage 53 is determined according to the operation state of the cleaning valve 262 It is decided.

In this example, when air is not injected into the first and second air injection passages H51 and H52 when the bypass valve 261 and the cleaning valve 262 are in the inoperative state, the bypass valve 261 The connecting portion between the direction switching passage H55 and the first valve mounting groove 251 and the connecting portion between the output passage H54 and the second valve mounting groove 252 are blocked by the cleaning valve 262, The path between the passage H55 and the first valve mounting groove 251 and between the output passage H54 and the second valve mounting groove 252 become non-conductive.

As a result, the bypass valve 261 closes the second portion 55b and the third portion 55c of the direction switching passage H55 and the direction switching passage H55 becomes nonconductive, and the cleaning liquid injecting passage H53 and the output passage H54 are blocked by the cleaning valve 262 so that the cleaning liquid injection passage H53 and the output passage H54 become non-conductive.

However, when air is injected into the first and second air injection passages H51 and H52 and the bypass valve 261 and the cleaning valve 262 are switched to the operating state, the bypass valve 261 and the cleaning valve 262 are opened, The connection portion between the direction switching passage H55 and the first valve mounting groove 251 and the connection portion between the output passage H54 and the second valve mounting groove 252 are opened.

Therefore, the redirecting passage H55 becomes completely conductive, and the output passage H54 and the washing liquid injecting passage H53 communicate with each other.

In this example, the passages formed in the respective components 210-250 and 23 are all located inside the corresponding components 210-250 and 23 and pass through the passages H231, H43, H44, H54, and H55 extend in the thickness direction, and the length of the passages connected to each other is reduced.

As a result, the movement route of the cleaning liquid or paint is reduced, shortening the cleaning time and the paint spraying time.

In this example, the uniaxial cross-sectional shape of all the passages formed in the paint pump 20 has a circular shape, but it is not limited thereto and may have various shapes such as a square shape.

The operation of the coating system having such a structure will be described.

First, a process of performing the cleaning operation of the paint pump 20 will be described.

The cleaning liquid supply pipe 12 of the color changer 10 is connected to the inlet passage L11 and the outlet pipe 13 is connected to the outlet passage L12. Also, the operation of the control unit causes the pump driving unit 40 to rotate in a predetermined direction and speed, and the driving shaft 23 connected to the pump driving unit 40 also maintains the rotating state.

Accordingly, the first and second gears G11 and G12 connected to the drive shaft 23 are engaged with each other in the gear mounting portion 230 and maintained in a rotating state in the corresponding direction.

Air is injected into the first and second air injection passages H51 and H52 by the control operation of the control unit to operate the bypass valve 261 and the cleaning valve 262. [

As a result, the bypass valve 261 and the cleaning valve 262 are respectively reversed to make the directional control valve H55 conductive and to connect the cleaning liquid injection passage H53 and the output passage H54.

In this state, the cleaning liquid is supplied to the cleaning liquid supply pipe 12 of the color changer 10 and the cleaning liquid injection path H53 of the cleaning driving block 250.

The cleaning liquid injected into the cleaning liquid supply pipe 12 of the color changer 10 is supplied to the inlet passage H11 of the paint pump 20 through the inlet passage L11 and flows into the first connection passage H13, Are transmitted to the input passages H22 and H41 of the rear gear casing units 220 and 240, respectively.

As a result, the cleaning liquid is introduced into the outer surfaces of the first and second gears G11 and G12 mounted on the gear mounting portion 230 so that the outer surfaces of the gears G11 and G12 and the outer surface of the rear gear casing portion 240 The cleaning operation of the inner surface is performed.

Thus, the cleaning liquid that has passed through the input passage H41 passes through the first portion 55a-the third portion 55c-the second portion 55b of the direction switching passage H55 of the cleaning drive block 250, And is transmitted to the output passages H42 and H23 of the front gear casing unit 240.

Since the cleaning liquid is supplied into the gear mounting portion 230 through the input passages H22 and H41 and the output passages H42 and H23, the cleaning operation of the gear mounting portion 230 and the gears G11 and G12 can be performed quickly and precisely All.

The cleaning liquid that has passed through the output passage H23 is transferred to the second connection passage H14 connected to the output passage H23 and discharged to the water discharge passage H12 and discharged through the discharge passage L12 to the discharge pipe 13 Lt; / RTI >

The movement path of the cleaning liquid supplied from the sealing portion 210 is the same as the path (1) in Fig.

The rinsing liquid injected into the rinsing liquid injection passage H53 of the rinsing driving block 250 passes through the rinsing action of the rinsing valve 261 through the output passage H54, And is then transferred to the cleaning liquid passage H231 of the drive shaft 23, as shown in Fig.

The cleaning liquid delivered to the cleaning liquid delivery passage H231 is discharged to the outer surface of the drive shaft 23 through the plurality of cleaning liquid discharge passages H45 so that the outer surface of the drive shaft 23, the inner diameter of the gear G11, , G12).

Next, since one of the plurality of cleaning liquid discharge passages H232 of the drive shaft 23 is in communication with the second portion 21b of the cleaning liquid delivery passage H21 of the front gear casing unit 220, The cleaning liquid is transferred to the cleaning liquid delivery passage H44 formed in the auxiliary shaft 241 of the rear gear casing portion 240 along the cleaning liquid delivery passage H21 of the cleaning liquid container 220 and is guided to the auxiliary shaft 241 To clean the outer surface of the auxiliary shaft 241, the inner diameter of the gear G12, and the lower end surface of the gears G11 and G12.

The cleaning liquid in the cleaning liquid transfer passage H44 of the auxiliary shaft 241 is guided along the same path as described previously via the output passage H42 connected to the cleaning liquid passage H44, And is discharged to the water discharge passage L12 through the passage H14.

Therefore, it is discharged to the discharge pipe 13 of the color changer 10 along the exit passage L12 connected to the water discharge passage H12.

The movement path of the cleaning liquid supplied through the cleaning drive block 250 is the same as the path (2) in FIG.

As described above, since the cleaning operation is performed through the two paths (1, 2), the cleaning time of the painting pump is greatly shortened.

Further, when the cleaning operation is performed, since the direction switching passage H55 is opened by the operation of the bypass valve 261, and the cleaning fluid of the amount greater than that of the fixed amount paint is used for the cleaning operation of the paint pump 20, The cleaning time of the pump 20 is further shortened and the cleaning efficiency is also improved.

After the cleaning operation of the paint pump 20 is completed for a predetermined time through the first path and the second path as described above, the air injection of the first and second air injection passages H51 and H52 is performed by the control operation of the control unit The bypass valve 261 and the cleaning valve 262 are switched to the non-operating state. Therefore, the bypass valve 261 and the cleaning valve 262 are advanced to the rear casing portion 240 to turn the direction switching passage H55 into a non-conducting state, and the cleaning liquid injection passage H53 and the output passage H54, The non-conduction state is established.

In this case, the water discharge passage H12 of the sealing portion 10 is connected to the painting device 30 instead of the water discharge pipe 13 of the color changer 10. [

Next, by the control operation of the control unit, the paint supply pipe 11 to which the paint of the desired color is supplied from the plurality of road supply pipes 11 is connected to the inflow path L11, and the paint of the desired color is supplied through the inflow path L11 The paint is moved along the path 1 as described above and discharged to the water discharge passage H12 of the sealing portion 10 and connected to the water discharge passage H12 connected to the painting apparatus 30 ).

Since the direction switching passage H55 of the cleaning driving block 250 is blocked as described above, the paint introduced into the gear mounting portion 230 is changed in the gear driving block 250 through the rear gear casing portion 240 The clearance between the gear mounting portion 230 and the rear casing portion 240 and the clearance between the gears G11 and G12 and the gear mounting portion 230 may be changed to the front gear And returns to the casing unit 220 side.

At this time, since the first and second gears G11 and G12 are rotated by the rotation of the driving shaft 23, the paint discharging operation is performed toward the front gear casing unit 220 and the gear mounting unit 230 and the rear casing unit The amount of clearance between the gears G11 and G12 and the gear mounting portion 230 and the rotational speed of the gears G11 and G12 are constantly discharged.

As a result, the coating material is sprayed to the target from the coating device 30 by the operation of the coating device 30, and the coating operation of the target material is performed.

Thus, in the paint pump 20 according to the present embodiment, the discharge operation of the paint and the cleaning liquid is performed through the same water discharge passage H12, so that the structure of the paint pump 20 is simplified.

In this example, two adjacent components 210, 222, 230, 240, 250 are coupled to each other using a plurality of fastening means and fasteners, and each component 210, 222, 230, 240, 250 Are formed with a plurality of fastening holes.

However, in the drawing shown in Fig. 2, a plurality of fastening means and a plurality of fastening means are omitted for convenience of illustration.

In addition, a sealing member may be present between the two components 210, 222, 230, 240, and 250, which are coupled to each other, such as an O-ring, There is also a sealing member such as an O-ring in a portion of the sealing member to prevent a fluid such as a paint or a cleaning liquid from flowing out to the outside.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, It belongs to the scope of right.

21: Bracket 22: Flange
23: drive shaft 210: sealing part
220: front gear casing portion (first gear casing portion)
230: gear mounting portion 240: rear gear casing portion (second gear casing portion)
250: Cleaning drive block 261: Bypass valve
262: cleaning valve G11, G12: gear
251: first valve mounting groove 252: second valve mounting groove
11: paint supply pipe 12: cleaning liquid supply pipe
13: exit hall H11: access passage
H12: Extraction passage H13, H14: Connection passage
H231, H21, H43: cleaning liquid delivery passage
H232, H45: Cleaning liquid discharge passage
H22, H41: Input passages H23, H42, H54: Output passages
H51, H52: air injection path H53: cleaning liquid injection path
H55: Direction switching passage

Claims (12)

A driving shaft connected to the pump driving unit and rotated by the pump driving unit and having a cleaning liquid delivery passage for delivering the cleaning liquid and a plurality of cleaning liquid discharge passages connected to the cleaning liquid delivery passage and passing through the outer surface of the cleaning liquid delivery passage,
A sealing portion having the drive shaft inserted therein and having a water inlet passage through which a paint or a cleaning liquid is injected and a water outlet passage through which the injected paint or the cleaning liquid is discharged,
A first gear casing part having an input passage which is located behind the sealing part and into which the drive shaft is inserted and which is connected to the intake passage, an output passage connected to the water discharge passage, and a rinse solution delivery passage for delivering the rinse solution,
A gear mounting portion which is located behind the first gear casing portion and has a first gear rotatably connected to the drive shaft and a second gear engaged with the first gear,
A cleaning liquid delivery passage connected to the cleaning liquid delivery passage of the first gear casing portion and a plurality of cleaning liquid delivery passages connected to the cleaning liquid delivery passage and passing through the outer surface of the cleaning liquid delivery passage, A sub-
An input passage to which the auxiliary shaft is mounted and which is connected to the input passage of the first gear casing portion, an output passage connected to the cleaning fluid passage of the auxiliary shaft and the output passage of the first gear casing portion, A second gear casing part having a cleaning liquid delivery passage connected to the second gear casing part,
A bypass valve and a cleaning valve are installed and supply the cleaning liquid to the cleaning liquid delivery passage of the second gear casing portion according to the operation state of the bypass valve and the cleaning valve, A cleaning drive block for supplying the supplied cleaning liquid to the output passage of the second gear casing portion,
/ RTI > The method of claim 1,
The cleaning drive block includes:
A first valve mounting groove into which the bypass valve is inserted,
A second valve mounting groove into which the cleaning valve is inserted,
An output passage connected to the rinse solution delivery passage of the second gear casing portion and the second valve mounting groove,
An input passage and an output passage of the second gear casing portion, and a direction switching passage connected to the first valve mounting groove,
A cleaning liquid injection passage into which the cleaning liquid is injected and which is connected to the second valve mounting groove,
A first air injection passage connected to the first valve mounting groove, and
And a second air injection passage connected to the second valve mounting groove,
/ RTI > 3. The method of claim 2,
And the direction switching passage of the cleaning drive block,
A first portion extending in a thickness direction from a front surface of the cleaning drive block and connected to an input passage of the second gear casing portion,
A second portion that is spaced apart in the lateral direction from the first portion and connected to the output passage of the second gear casing portion through the front surface of the cleaning drive block,
And a third portion extending laterally between the first portion and the second portion to connect the first and second portions and connected to the first valve mounting groove,
/ RTI > 3. The method of claim 2,
When the air is injected into the first air injection valve, the directional control valve maintains the conduction state by the operation of the bypass valve. When the air is injected into the second air injection valve, Wherein the cleaning fluid injection path of the driving block and the output path of the cleaning driving block maintain a conductive state. The method of claim 1,
Wherein the sealing portion further comprises a first connecting passage connecting between the inlet passage and the input passage of the first gear casing portion and a second connecting passage connecting between the water discharge passage and the output passage of the first gear casing portion, . The method of claim 1,
Wherein the cleaning liquid transfer passage of the first gear casing portion includes a first portion extending in the thickness direction from the rear surface and a second portion extending in the longitudinal direction and connected to the cleaning liquid discharge passage of the first portion and the drive shaft, . The method of claim 1,
Wherein the cleaning liquid delivery passage of the drive shaft extends in a thickness direction from a rear surface of the drive shaft and the plurality of the cleaning liquid discharge paths of the drive shaft are spaced from each other and extend radially to penetrate the outer surface of the drive shaft. The method of claim 1,
Wherein the cleaning liquid passage of the auxiliary shaft has a first portion extending in the thickness direction from the front surface of the auxiliary shaft and a second portion extending in the first portion from the outer surface of the auxiliary shaft and connected to the output passage of the second gear casing portion, And a second portion which is provided on the first surface. 9. The method of claim 8,
Wherein the plurality of rinse solution discharge passages of the sub axis are connected to the first part and are spaced apart from each other and extend radially so as to penetrate the outer surface of the sub axis. A plurality of paint supply pipes for supplying a plurality of paints,
A cleaning liquid supply pipe for supplying a cleaning liquid,
A discharge pipe through which paint or cleaning liquid is discharged,
A painting pump having an inlet passage connected to one of the plurality of paint supply pipes and the cleaning liquid supply pipe and a water discharge passage connected to the discharge pipe,
And a paint device connected to the water discharge passage
Lt; / RTI >
The painting pump includes:
A driving shaft connected to the pump driving unit and rotated by the pump driving unit and having a cleaning liquid delivery passage for delivering the cleaning liquid and a plurality of cleaning liquid discharge passages connected to the cleaning liquid delivery passage and passing through the outer surface of the cleaning liquid delivery passage,
A sealing portion having the drive shaft inserted therein and having a water inlet passage through which a paint or a cleaning liquid is injected and a water outlet passage through which the injected paint or the cleaning liquid is discharged,
A first gear casing part having an input passage which is located behind the sealing part and into which the drive shaft is inserted and which is connected to the intake passage, an output passage connected to the water discharge passage, and a rinse solution delivery passage for transferring the rinse solution,
A gear mounting portion which is located behind the first gear casing portion and has a first gear rotatably connected to the drive shaft and a second gear engaged with the first gear,
A cleaning liquid delivery passage connected to the cleaning liquid delivery passage of the first gear casing portion and a plurality of cleaning liquid delivery passages connected to the cleaning liquid delivery passage and passing through the outer surface of the cleaning liquid delivery passage, A sub-
An input passage to which the auxiliary shaft is mounted and which is connected to the input passage of the first gear casing portion, an output passage connected to the cleaning fluid passage of the auxiliary shaft and the output passage of the first gear casing portion, A second gear casing part having a cleaning liquid delivery passage connected to the second gear casing part,
A bypass valve and a cleaning valve are installed and supply the cleaning liquid to the cleaning liquid delivery passage of the second gear casing portion according to the operation state of the bypass valve and the cleaning valve, A cleaning drive block for supplying the supplied cleaning liquid to the output passage of the second gear casing portion,
≪ / RTI > 11. The method of claim 10,
The cleaning drive block includes:
A first valve mounting groove into which the bypass valve is inserted,
A second valve mounting groove into which the cleaning valve is inserted,
An output passage connected to the rinse solution delivery passage of the second gear casing portion and the second valve mounting groove,
An input passage of the second gear casing portion, an output passage, and a direction switching passage connected to the valve mounting groove,
A cleaning liquid injection passage into which the cleaning liquid is injected and which is connected to the second valve mounting groove,
A first air injection passage connected to the first valve mounting groove, and
And a second air injection passage connected to the second valve mounting groove,
≪ / RTI > 11. The method of claim 10,
Wherein the sealing portion further comprises a first connecting passage connecting between the inlet passage and the input passage of the first gear casing portion and a second connecting passage connecting between the water discharge passage and the output passage of the first gear casing portion, .

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