Plate paint spraying device

Abstract

The utility model discloses a plate paint spraying device, a paint spraying mechanism comprises a paint spraying assembly, an overturning assembly, a clamping assembly and a conveying assembly, a workbench is provided with the conveying assembly capable of conveying plates in a middle mode, the clamping assembly capable of clamping and fixing the plates conveyed by the conveying assembly is installed on the inner side of an installation frame, and the overturning assembly is installed on the inner side of the installation frame. An overturning assembly capable of overturning when the plate ascends in the vertical direction is arranged on the side of the clamping assembly, and a paint spraying assembly capable of spraying paint on the plate is arranged above the clamping assembly. The plate paint spraying device overcomes the defects that although paint spraying on a plate is achieved, only one face of the plate can be sprayed every time, workers need to spray paint on the plate for the second time, a large amount of time needs to be consumed, meanwhile, the working intensity of the workers is greatly improved, the working efficiency is greatly reduced, and the labor intensity of the workers is reduced. And therefore, the practicability is greatly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of plate spraying, and in particular to a plate spraying device. Background Art

[0002] Sheets are flat rectangular building material boards made into standard sizes and used in the construction industry as components of walls, ceilings or floors. They also refer to metal sheets that are forged, rolled or cast. Furniture sheets generally use artificial boards, medium-density fiberboards, fireproof boards, etc. The production of furniture is inseparable from the painting process.

[0003] The utility model patent with the publication number CN213612162U discloses a plate painting device with uniform paint spraying, including a paint spraying rack, a paint storage box, a paint spraying box, a paint spraying tube, a nozzle, a baffle, a conveying roller and a workbench, wherein the paint spraying rack is provided with a workbench, and a plurality of pairs of support plates are bolted to the workbench, and a conveying roller is provided between the support plates; the paint spraying rack is provided with a mounting hole, and a fixing rod is bolted to the fixing rod, and a spring is provided in the fixing rod, one end of the spring is welded to the connecting rod, and one end of the connecting rod is welded to the baffle; a fixing plate is bolted to the fixing plate between the paint spraying racks, and a paint storage box is provided on the upper part of the fixing plate, one end of the paint storage box is connected to the paint spraying tube, and one end of the paint spraying tube is connected to the paint spraying box. In the utility model, when the plate generates thrust on the baffle, the baffle and the connecting rod will squeeze the spring to telescopic movement in the fixing rod, which can correct the position of the plate and avoid the plate offset caused by vibration during the operation of the conveying roller.

[0004] The above-mentioned prior art solutions still have the following defects: although the painting of the plate is achieved, only one side of the plate can be painted each time, and the staff needs to paint the plate twice, which consumes a lot of time and greatly increases the work intensity of the staff, thereby greatly reducing the work efficiency. Moreover, although the plate is conveyed under the action of the conveyor roller, the contact area between the conveyor roller and the plate is relatively limited. The baffle and the connecting rod have a certain elastic force under the elastic force of the spring. In this way, it is difficult to squeeze the baffle under the action of the thrust when the plate contacts the baffle, and it is easy for the baffle to resist the plate, making the plate unable to move, thereby greatly reducing the practicality. Utility Model Content

[0005] In view of the above technical problems, the purpose of the utility model is to overcome the problem that although the painting of the plate is achieved, only one side of the plate can be painted each time, and the staff needs to paint the plate twice, which consumes a lot of time and greatly increases the work intensity of the staff, thereby greatly reducing the work efficiency. Moreover, although the plate is transported under the action of the conveyor roller, the contact area between the conveyor roller and the plate is relatively limited. The baffle and the connecting rod have a certain elastic force under the elastic force of the spring. In this way, it is difficult to squeeze the baffle under the action of the thrust when the plate contacts the baffle, and it is easy for the baffle to resist the plate, making the plate unable to move, thereby greatly reducing the practicality problem, thereby providing a plate painting device that solves the above problems.

[0006] In order to achieve the above-mentioned purpose, the utility model provides a plate spraying device, which comprises a mounting frame on the upper surface of the workbench and a spraying mechanism for spraying paint on the plate, wherein:

[0007] The paint spraying mechanism includes a paint spraying component, a flipping component, a clamping component and a conveying component. The workbench is provided with a conveying component that can convey the plate in progress. The inner side of the mounting frame is provided with a clamping component that can clamp and fix the plate conveyed by the conveying component. The side of the clamping component is provided with a flipping component that can turn over the plate when it rises in the vertical direction. A paint spraying component that can spray paint the plate is provided above the clamping component.

[0008] Preferably, the conveying assembly includes a second drive motor, a conveyor belt and at least two conveying rollers, the second drive motor is horizontally mounted on the outside of the mounting frame, the two conveying rollers are horizontally and rotatably mounted on the inside of the mounting frame, and one end of one of the conveying rollers rotatably passes through the inside of the mounting frame and is transmission-connected to the drive shaft of the second drive motor, and the two conveying rollers are transmission-connected to each other through the conveyor belt.

[0009] Preferably, the clamping assembly includes a second electric push rod and an adjusting shaft, the second electric push rod is horizontally mounted on the inner side of the mounting frame, the end of the piston rod of the second electric push rod is rotatably mounted with a first clamping plate, the adjusting shaft is horizontally rotatably mounted on the end face opposite to the inner end face of the mounting frame where the second electric push rod is located, and one end of the adjusting shaft is mounted with a second clamping plate that is compatible with the first clamping plate.

[0010] Preferably, the flipping assembly includes a first drive motor and at least two lead screws, the first drive motor is vertically mounted on the top of the mounting frame, the two lead screws are vertically and rotatably mounted on the inner side of the mounting frame, and the two lead screws are respectively arranged on both sides of the conveyor belt, the top of one of the lead screws rotatably passes through the inner side of the mounting frame and is drivingly connected to the output shaft of the first drive motor, the surface of each lead screw is threadedly connected to a drive seat that is lifted and lowered along its length direction, a horizontally arranged mounting plate is installed at one end of the drive seat, a pulley is fixedly sleeved on the outer surface of each lead screw, and the two pulleys are connected to each other by a belt, the adjusting shaft is horizontally and rotatably mounted on one of the drive seats, and the corresponding second electric push rod is horizontally mounted on the other drive seat.

[0011] Preferably, the flip assembly further comprises a rotating rod with a convex strip and an incomplete gear, wherein the incomplete gear is fixedly sleeved on the outer surface of one of the lead screws, the rotating rod is vertically and rotatably mounted on the inner lower end surface of the mounting frame via a second one-way bearing mounted at its end, the rotating rod surface is fixedly sleeved with a first one-way bearing, and the outer surface of the first one-way bearing is fixedly sleeved with a first driven gear that can intermittently mesh with the incomplete gear, wherein:

[0012] The first one-way bearing and the second one-way bearing are arranged in opposite directions in which they can rotate relative to each other.

[0013] Preferably, the flip assembly also includes a worm, a rotating shaft and a second driven gear, the worm is vertically and rotatably mounted on the mounting plate, and the worm can be slidably sleeved on the outer surface of the rotating rod through a through hole recessed in the axis center of the worm, so as to rise and fall along the length direction of the rotating rod and rotate along with the rotation of the rotating rod, the rotating shaft is horizontally and rotatably mounted on one end surface of the driving seat, one end of the rotating shaft is fixedly sleeved with a worm wheel meshing with the worm, the other end of the rotating shaft rotatably passes through the driving seat and is fixedly sleeved with a driving gear meshing with the second driven gear, and the second driven gear is fixedly sleeved on the outer surface of the adjusting shaft.

[0014] Preferably, the paint spraying assembly includes a paint box and a plurality of first electric push rods, wherein the plurality of first electric push rods are vertically mounted on the inner upper end surface of the mounting frame, and the bottom ends of the piston rods of the plurality of first electric push rods are mounted with the same nozzle, the paint box is arranged on the inner side of the workbench, a paint pump is mounted on the inner side of the paint box, a discharge port of the paint pump is equipped with a liquid guide tube capable of guiding the paint in the paint box into the nozzle, and a liquid inlet tube capable of guiding the paint into the paint box is arranged on the outer side of the paint box.

[0015] According to the above technical solution, the plate painting device provided by the utility model has the following beneficial effects:

[0016] 1. By setting up the mutual cooperation between the flipping component, the clamping component and the painting component, the plate can be turned over and painted more easily, avoiding the staff from painting the plate twice. The plate can also be better transported to avoid interference that causes the plate to be unable to move, thereby greatly improving work efficiency.

[0017] 2. By arranging the mutual cooperation between the worm wheel, the worm, the incomplete gear, the lead screw, the first one-way bearing and the second one-way bearing, the plate can be better turned over during the rising process and remain unchanged during the descending process, thereby better realizing the turning over of the plate, thereby greatly improving work efficiency and greatly enhancing practicality.

[0018] Other features and advantages of the utility model will be described in detail in the subsequent specific implementation mode; and the parts not involved in the utility model are the same as the prior art or can be implemented by using the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention, but do not constitute a limitation to the present invention. In the accompanying drawings:

[0020] Figure 1 It is a schematic diagram of the overall structure of a plate painting device provided in a preferred embodiment of the utility model;

[0021] Figure 2 This is a schematic structural diagram of a paint spraying mechanism of a plate paint spraying device provided in a preferred embodiment of the utility model;

[0022] Figure 3 This is a schematic diagram of the internal connection structure of a paint box of a plate painting device provided in a preferred embodiment of the utility model;

[0023] Figure 4 It is a schematic diagram of the structure of the flip assembly and the clamping assembly of the plate painting device provided in a preferred embodiment of the utility model;

[0024] Figure 5 It is a schematic diagram of the structure of a flip assembly of a plate painting device provided in a preferred embodiment of the utility model.

[0025] Description of Reference Numerals

[0026] In the figure: 1, workbench, 2, paint spraying assembly, 201, paint box, 202, liquid inlet pipe, 203, liquid guide pipe, 204, first electric push rod, 205, nozzle, 206, paint pump, 3, mounting frame, 4, flip assembly, 401, second driven gear, 402, drive seat, 403, worm, 404, second one-way bearing, 405, rotating shaft, 406, worm wheel, 407, first drive motor, 408 , driving gear, 409, first driven gear, 410, first one-way bearing, 411, incomplete gear, 412, pulley, 413, screw, 414, mounting plate, 415, rotating rod, 5, clamping assembly, 501, second electric push rod, 502, first clamping plate, 503, second clamping plate, 504, adjusting shaft, 6, transmission assembly, 601, conveyor belt, 602, transmission roller, 603, second driving motor. DETAILED DESCRIPTION

[0027] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0028] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0029] like Figure 1-5 As shown, a plate spraying device comprises a workbench 1, a mounting frame 3 arranged on the upper end surface of the workbench 1, and a spraying mechanism for spraying paint on the plate, wherein:

[0030] The paint spraying mechanism includes a paint spraying component 2, a flipping component 4, a clamping component 5 and a conveying component 6. The workbench 1 is provided with a conveying component 6 that can convey the plate in progress. The inner side of the mounting frame 3 is provided with a clamping component 5 that can clamp and fix the plate conveyed by the conveying component 6. The side of the clamping component 5 is provided with a flipping component 4 that can turn over the plate when it rises in the vertical direction. The top of the clamping component 5 is provided with a paint spraying component 2 that can spray paint on the plate.

[0031] When spraying paint on the plate, first place the plate on the conveying component 6, then start the conveying component 6, so that the conveying component 6 conveys the plate, when the conveying component 6 conveys the plate to the middle of the clamping component 5, start the clamping component 5 again, so that the clamping component 5 clamps the plate, and then start the painting component 2, so that the painting component 2 sprays paint on the end face of the plate, after one side of the painting is completed, start the flipping component again, so that the flipping component 4 turns the plate over, after the turning over is completed, start the painting component 2 again, so that the paint component 2 sprays paint on the plate, after the painting is completed, start the clamping component 5 again, so that the clamping component 5 releases the clamping of the plate, thereby realizing the painting of the plate, in this way, the plate can be turned over and painted at a higher level, avoiding the staff from spraying paint on the plate twice, thereby greatly improving the work efficiency, and the plate can also be better transported, thereby greatly improving the practicality.

[0032] In this embodiment, the conveying assembly 6 includes a second driving motor 603, a conveyor belt 601 and at least two conveying rollers 602. The second driving motor 603 is horizontally mounted on the outside of the mounting frame 3, and the two conveying rollers 602 are horizontally and rotatably mounted on the inside of the mounting frame 3. One end of one of the conveying rollers 602 rotatably passes through the inside of the mounting frame 3 and is mutually connected with the driving shaft of the second driving motor 603. The two conveying rollers 602 are mutually connected through the conveyor belt 601.

[0033] Specifically, firstly, the second driving motor 603 is started, so that the second driving motor 603 drives the conveying roller 602 to rotate, and the conveying roller 602 drives the conveying belt 601 to rotate, so that the conveying belt 601 conveys the plate.

[0034] In this embodiment, the clamping assembly 5 includes a second electric push rod 501 and an adjusting shaft 504. The second electric push rod 501 is horizontally mounted on the inner side of the mounting frame 3. The end of the piston rod of the second electric push rod 501 is rotatably mounted with a first clamping plate 502. The adjusting shaft 504 is horizontally rotatably mounted on the end face opposite to the inner end face of the mounting frame 3 where the second electric push rod 501 is located. A second clamping plate 503 that is compatible with the first clamping plate 502 is mounted on one end of the adjusting shaft 504.

[0035] Specifically, when the conveyor belt 601 drives the plate to move between the first clamping plate 502 and the second clamping plate 503, the second electric push rod 501 is started, so that the second electric push rod 503 drives the first clamping plate 502 to move toward the plate, so that the first clamping plate 502 clamps the plate under the action of the second clamping plate 503.

[0036] In this embodiment, the flip assembly 4 includes a first drive motor 407 and at least two lead screws 413, the first drive motor 407 is vertically mounted on the top of the mounting frame 3, the two lead screws 413 are vertically and rotatably mounted on the inner side of the mounting frame 3, and the two lead screws 413 are respectively arranged on both sides of the conveyor belt 601, the top of one of the lead screws 413 rotatably passes through the inner side of the mounting frame 3 and is transmission-connected to the output shaft of the first drive motor 407, the surface of each lead screw 413 is threadedly connected with a drive seat 402 that is lifted and lowered along its length direction, a horizontally arranged mounting plate 414 is installed at one end of the drive seat 402, the outer surface of each lead screw 413 is fixedly sleeved with a pulley 412, and the two pulleys 412 are mutually transmission-connected by a belt, the adjusting shaft 504 is horizontally and rotatably mounted on one of the drive seats 402, and the corresponding second electric push rod 501 is horizontally mounted on the other drive seat 402.

[0037] Specifically, first start the first drive motor 407, so that the first drive motor 407 drives one of the lead screws 413 to rotate, and the lead screw 413 drives the other lead screw 413 to rotate through two pulleys 412 and a belt, so that the lead screw 413 drives the drive seat 402 to move upward, and the drive seat 402 drives the mounting plate 414 to move upward, and the two drive seats 402 respectively drive the second electric push rod 501 and the adjusting shaft 504 to move upward, thereby realizing the adjustment of the second electric push rod 501 and the adjusting shaft 504.

[0038] In this embodiment, the flip assembly 4 further includes a rotating rod 415 with a convex strip and an incomplete gear 411, wherein the incomplete gear 411 is fixedly sleeved on the outer surface of one of the lead screws 413, and the rotating rod 415 is vertically and rotatably mounted on the inner lower end surface of the mounting frame 3 through a second one-way bearing 404 mounted at its end, and a first one-way bearing 410 is fixedly sleeved on the surface of the rotating rod 415, and a first driven gear 409 that can intermittently mesh with the incomplete gear 411 is fixedly sleeved on the outer surface of the first one-way bearing 410, wherein:

[0039] The first one-way bearing 410 and the second one-way bearing 404 are rotatably arranged in opposite directions to each other.

[0040] Specifically, the lead screw 413 drives the incomplete gear 411 to rotate, the incomplete gear 411 drives the first driven gear 409 to rotate intermittently, and the first driven gear 409 drives the rotating rod 415 to rotate through the first one-way bearing 410, thereby achieving adjustment of the rotating rod 415.

[0041] In this embodiment, the flip assembly 4 also includes a worm 403, a rotating shaft 405 and a second driven gear 401. The worm 403 is vertically and rotatably mounted on the mounting plate 414, and the worm 403 can be slidably sleeved on the outer surface of the rotating rod 415 through a through hole recessed in its axis center, so that it can be raised and lowered along the length direction of the rotating rod 415 and rotate along the rotation of the rotating rod 415. The rotating shaft 405 is horizontally and rotatably mounted on an end surface of the driving seat 402, and one end of the rotating shaft 405 is fixedly sleeved with a worm wheel 406 meshing with the worm 403, and the other end of the rotating shaft 405 can rotatably pass through the driving seat 402 and is fixedly sleeved with a driving gear 408 meshing with the second driven gear 401, and the second driven gear 401 is fixedly sleeved on the outer surface of the adjusting shaft 504.

[0042] Specifically, the rotating rod 415 drives the worm 403 to rotate, the worm 403 drives the worm wheel 406 to rotate, the worm wheel 406 drives the rotating shaft 405 to rotate, the rotating shaft 405 drives the driving gear 408 to rotate, the driving gear 408 drives the second driven gear 401 to rotate, and the second driven gear 401 drives the adjusting shaft 504 to rotate, thereby realizing the rotation of the adjusting shaft 504.

[0043] In this embodiment, the paint spraying assembly 2 includes a paint box 201 and a plurality of first electric push rods 204, wherein the plurality of first electric push rods 204 are vertically mounted on the inner upper end surface of the mounting frame 3, and the bottom ends of the piston rods of the plurality of first electric push rods 204 are mounted with the same nozzle 205, the paint box 201 is arranged on the inner side of the workbench 1, and a paint pump 206 is mounted on the inner side of the paint box 201, and the discharge port of the paint pump 206 is equipped with a liquid guide tube 203 which can guide the paint in the paint box 201 into the nozzle 205, and a liquid inlet tube 202 which can guide the paint into the paint box 201 is provided on the outer side of the paint box 201.

[0044] Specifically, first start the first electric push rod 204, so that the first electric push rod 204 drives the nozzle 205 to move downward. When the nozzle 205 moves to the corresponding position, start the paint pump 206, so that the paint pump 206 draws the paint in the paint box 201 and guides it into the nozzle 205 through the liquid guide tube 203 and sprays it out, so that the sprayed paint sprays the plate, thereby achieving painting of the plate.

[0045] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, the technical solution of the present invention can be subjected to a variety of simple modifications, and these simple modifications all belong to the protection scope of the present invention.

[0046] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present utility model will not further describe various possible combinations.

[0047] In addition, various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A plate painting device, characterized in that: The paint spraying device comprises a workbench (1), a mounting frame (3) arranged on the upper end surface of the workbench (1), and a paint spraying mechanism for spraying paint on a plate, wherein: The paint spraying mechanism comprises a paint spraying assembly (2), a turning assembly (4), a clamping assembly (5) and a conveying assembly (6); the workbench (1) is provided with a conveying assembly (6) capable of conveying a plate in the process; the inner side of the mounting frame (3) is provided with a clamping assembly (5) capable of clamping and fixing a plate conveyed by the conveying assembly (6); a turning assembly (4) capable of turning over the plate when the plate rises in a vertical direction is provided on the side of the clamping assembly (5); and a paint spraying assembly (2) capable of spraying paint on the plate is provided above the clamping assembly (5); The conveying assembly (6) comprises a second driving motor (603), a conveyor belt (601) and at least two conveying rollers (602), wherein the second driving motor (603) is horizontally mounted on the outside of the mounting frame (3), and the two conveying rollers (602) are horizontally and rotatably mounted on the inside of the mounting frame (3), and one end of one of the conveying rollers (602) rotatably passes through the inside of the mounting frame (3) and is mutually transmission-connected with the driving shaft of the second driving motor (603), and the two conveying rollers (602) are mutually transmission-connected via the conveyor belt (601); The clamping assembly (5) comprises a second electric push rod (501) and an adjusting shaft (504); the second electric push rod (501) is horizontally mounted on the inner side of the mounting frame (3); the end of the piston rod of the second electric push rod (501) is rotatably mounted with a first clamping plate (502); the adjusting shaft (504) is horizontally rotatably mounted on an end surface opposite to the inner end surface of the mounting frame (3) where the second electric push rod (501) is located; and one end of the adjusting shaft (504) is mounted with a second clamping plate (503) adapted to the first clamping plate (502); The flip assembly (4) comprises a first drive motor (407) and at least two lead screws (413), wherein the first drive motor (407) is vertically mounted on the top of the mounting frame (3), and the two lead screws (413) are vertically and rotatably mounted on the inner side of the mounting frame (3), and the two lead screws (413) are respectively arranged on both sides of the conveyor belt (601), wherein the top of one of the lead screws (413) rotatably passes through the inner side of the mounting frame (3) and is drivingly connected to the output shaft of the first drive motor (407), and each of the lead screws (413) is The surfaces of the guide screws (413) are threadedly connected with a driving seat (402) that can be lifted and lowered along the length direction thereof, and a horizontally arranged mounting plate (414) is installed at one end of the driving seat (402). A pulley (412) is fixedly sleeved on the outer surface of each of the lead screws (413), and the two pulleys (412) are connected to each other through a belt transmission. The adjusting shaft (504) is horizontally and rotatably mounted on one of the driving seats (402), and the corresponding second electric push rod (501) is horizontally mounted on the other driving seat (402).

2. A plate painting device according to claim 1, characterized in that: The flip assembly (4) further comprises a rotating rod (415) with a convex strip and an incomplete gear (411), wherein the incomplete gear (411) is fixedly sleeved on the outer surface of one of the lead screws (413), the rotating rod (415) is vertically and rotatably mounted on the inner lower end surface of the mounting frame (3) via a second one-way bearing (404) mounted on its end, the surface of the rotating rod (415) is fixedly sleeved with a first one-way bearing (410), and the outer surface of the first one-way bearing (410) is fixedly sleeved with a first driven gear (409) that can intermittently mesh with the incomplete gear (411), wherein: The first one-way bearing (410) and the second one-way bearing (404) are arranged in opposite directions so as to be rotatable relative to each other.

3. A plate painting device according to claim 2, characterized in that: The flip assembly (4) further comprises a worm (403), a rotating shaft (405) and a second driven gear (401); the worm (403) is vertically and rotatably mounted on the mounting plate (414); and the worm (403) is slidably sleeved on the outer surface of the rotating rod (415) through a through hole recessed in the axis center thereof, so as to rise and fall along the length direction of the rotating rod (415) and rotate along with the rotation of the rotating rod (415); the rotating shaft (405) is water-tight and can rotate in a rotating manner. The rotating shaft (405) is flatly and rotatably mounted on one end surface of the driving seat (402); one end of the rotating shaft (405) is fixedly sleeved with a worm wheel (406) meshing with the worm (403); the other end of the rotating shaft (405) rotatably passes through the driving seat (402) and is fixedly sleeved with a driving gear (408) meshing with the second driven gear (401); and the second driven gear (401) is fixedly sleeved on the outer surface of the adjusting shaft (504).

4. A plate painting device according to claim 3, characterized in that: The paint spraying assembly (2) comprises a paint box (201) and a plurality of first electric push rods (204), wherein the plurality of first electric push rods (204) are vertically mounted on the inner upper end surface of the mounting frame (3), and the bottom ends of the piston rods of the plurality of first electric push rods (204) are mounted with a same spray head (205), the paint box (201) is arranged on the inner side of the workbench (1), a paint pump (206) is mounted on the inner side of the paint box (201), a liquid guide tube (203) is provided at the discharge port of the paint pump (206) for guiding the paint in the paint box (201) into the spray head (205), and a liquid inlet tube (202) is provided on the outer side of the paint box (201) for guiding the paint into the paint box (201).

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