Low-cost and easy-to-maintain paint supply device

Abstract

The invention discloses a low-cost and easy-to-maintain paint supply device, belongs to the technical field of spraying equipment, and aims to solve the problems of much waste of gun cleaning liquid, long cleaning time and high maintenance cost of an existing paint supply system. The pressure barrel is composed of a disposable paint bag, a sealing film, an opening cover cap, a disposable paint supply pipe, a fixing clamp, a pressure barrel body, a pressure barrel cover, a lifting ring screw, a discharging port, a discharging connector, an air inlet, a safety valve, an exhaust valve and an air inlet pipe. By adopting the design of the disposable paint supply pipe, the disposable tapping cap, the sealing film and the disposable paint bag, the cleaning work of the disposable paint supply pipe and the disposable paint bag is avoided, the cleaning and maintenance difficulty is reduced, meanwhile, the time required for overall cleaning and maintenance is shortened, the consumption of gun cleaning liquid is reduced, and the production efficiency is improved. And the cleaning and maintenance cost is saved.

Description

Technical Field

[0001] The invention relates to a low-cost and easy-to-maintain paint supply device, belonging to the technical field of spraying equipment. Background Art

[0002] In a multi-variety, small-batch spraying environment, traditional paint supply systems generally face the problems of difficult cleaning and high maintenance costs. These problems seriously limit the promotion of robotic automatic spraying systems.

[0003] The Chinese patent application number is "201810596523.5", and the patent name is "An injection paint supply system". The paint supply system includes a frame, a paint bucket and a partition. The paint bucket is placed on one side of the frame, and the partition is fixedly welded to one side wall of the frame. An agitator is fixedly connected to one side of the partition, and the output end of the agitator is located in the inner cavity of the paint bucket. A diaphragm pump is fixed to the surface of the partition through a screw, and a paint color changing valve is fixedly installed on the top of the diaphragm pump on the surface of the frame.

[0004] The above patent uses a stirrer, a diaphragm pump, a paint color change valve and other parts to form an injection paint supply system. When the color needs to be changed or the spraying operation is completed, each part needs to be thoroughly cleaned, which wastes a lot of gun washing liquid, takes a long time to clean, and the maintenance cost of the paint supply system is high. Summary of the invention

[0005] The present invention proposes a low-cost and easy-to-maintain paint supply device to solve the problems of large waste of gun washing liquid, long cleaning time and high maintenance cost of the paint supply system in the existing paint supply system.

[0006] The solution to the technical problem of the present invention is:

[0007] A low-cost, easy-to-maintain paint supply device, which consists of a disposable paint bag, a sealing film, a perforated cap, a disposable paint supply tube, a fixing fixture, a pressure barrel body, a pressure barrel cover, a lifting eye screw, a discharge port, a discharge joint, an air inlet, a safety valve, an exhaust valve and an air inlet pipe;

[0008] A sealing film is arranged at the opening of the disposable paint bag; a disposable perforated cover cap is arranged on the sealing film; the disposable perforated cover cap is connected and tightly covered with the disposable paint bag through a thread; the sharp end of the disposable paint supply tube pierces the sealing film through the disposable perforated cover cap and enters the disposable paint bag; a fixing fixture is arranged on the inner side wall of the pressure barrel body; the disposable paint bag is clamped by the fixing fixture and fixed in the pressure barrel body;

[0009] The pressure barrel cover is fixed to the pressure barrel body by means of eye screws; the discharge port is arranged at the center of the upper surface of the pressure barrel cover; the discharge joint is connected to the discharge port by means of threads; the sharp end of the disposable paint supply tube enters the pressure barrel body through the discharge joint, and the other end is connected to the spray gun through a ferrule joint and a spray gun paint supply tube; the air inlet, safety valve, and exhaust valve are evenly arranged on the periphery of the upper surface of the pressure barrel cover; one end of the air inlet pipe is connected to the air inlet, and the other end is connected to the high-pressure gas source valve.

[0010] Beneficial effects of the present invention:

[0011] The present invention adopts the design of a disposable paint supply tube, a disposable perforated cover cap, a sealing film and a disposable paint bag, thereby avoiding the cleaning work of the disposable paint supply tube and the disposable paint bag, reducing the difficulty of cleaning and maintenance, and also shortening the time required for overall cleaning and maintenance, reducing the consumption of gun washing fluid, and saving the cost of cleaning and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 A schematic diagram of the internal structure of a pressure barrel of a low-cost, easy-to-maintain paint supply device;

[0013] Figure 2 for Figure 1 A partial enlarged schematic diagram shown in the middle;

[0014] Figure 3 The figure is a schematic diagram of the external structure of a low-cost, easy-to-maintain paint supply device.

[0015] In the figure: 1. Disposable paint bag, 2. Sealing film, 3. Perforated cap, 4. Disposable paint supply tube, 5. Fixing fixture, 6. Pressure barrel body, 7. Pressure barrel cover, 8. Lifting eye screw, 9. Discharge port, 10. Discharge joint, 11. Air inlet, 12. Safety valve, 13. Exhaust valve, 14. Compression fitting, 15. Paint supply tube, 16. Spray gun, 17. Air inlet pipe, 18. High-pressure air source valve, 19. High-pressure air source. DETAILED DESCRIPTION

[0016] The present invention is further described in detail below with reference to the accompanying drawings.

[0017] The present invention discloses a low-cost and easy-to-maintain paint supply device, which is composed of a disposable paint bag 1, a sealing film 2, a perforated cover cap 3, a disposable paint supply tube 4, a fixing fixture 5, a pressure barrel body 6, a pressure barrel cover 7, a lifting eye screw 8, a discharge port 9, a discharge joint 10, an air inlet 11, a safety valve 12, an exhaust valve 13 and an air inlet pipe 17.

[0018] like Figure 1 , Figure 2As shown, a sealing film 2 is provided at the opening of a disposable paint bag 1; a disposable perforated cover cap 3 is provided on the sealing film 2; the disposable perforated cover cap 3 is connected and tightly covered with the disposable paint bag 1 through a thread; the sharp end of a disposable paint supply tube 4 pierces the sealing film 2 through the disposable perforated cover cap 3 and enters the disposable paint bag 1; a fixing fixture 5 is provided on the inner side wall of a pressure barrel body 6; the disposable paint bag 1 is clamped by the fixing fixture 5 and fixed in the pressure barrel body 6.

[0019] like Figure 3 As shown, the pressure barrel cover 7 is fixed to the pressure barrel body 6 by the eye screw 8; the discharge port 9 is arranged on the upper surface of the pressure barrel cover 7; the discharge joint 10 is connected to the discharge port 9 by a thread; the sharp end of the disposable paint supply tube 4 enters the pressure barrel body 6 through the discharge joint 10, and the other end is connected to the spray gun 16 through the ferrule joint 14 and the spray gun paint supply tube 15; the air inlet 11, the safety valve 12, and the exhaust valve 13 are evenly arranged on the upper surface of the pressure barrel cover 7; one end of the air inlet pipe 17 is connected to the air inlet 11, and the other end is connected to the high-pressure gas source valve 18; the high-pressure gas source valve 18 is arranged on the side wall of the high-pressure gas source 19.

[0020] In this example, the spray gun 16 uses Iwata WRA-101 spray gun, nozzle diameter: 0.8mm-1.9mm, atomization pressure: 0.26MPa, spray width pressure: 0.22MPa, spraying distance: 200mm, spray width: 190mm, paint discharge volume: 150ml / min.

[0021] The pressure barrel cover 7 and the pressure barrel body 6 are made of stainless steel pressure barrels, capacity: 3L, weight: 6KG, outer diameter: 133mm, inner diameter: 125mm, outer depth: 260mm, inner depth: 240mm, barrel depth: 4mm, barrel cover thickness: 12mm, maximum pressure: 8bar, total height: 340mm

[0022] The disposable paint bag 1 and the disposable perforated cap 3 are transparent self-supporting nozzle bags, capacity: 500ml, thickness: 0.2mm, material: PET+PE, color: transparent, caliber: 0.86cm inner diameter, whether it is degradable: yes

[0023] Ferrule connector 14, material: stainless steel, external pipe diameter: 8mm, opposite side: 17mm, total length: 38.2mm, thread specification: M14×1.5, manufacturing standard: GB3733.1~3765-83, taper pipe thread: ZG, pressure range: 25Mpa~40Mpa

[0024] Disposable paint supply tube 4 uses PURESHI transparent PTFE tube, material: polytetrafluoroethylene, inner diameter: 6mm, outer diameter: 8mm, specific gravity: 2.1-2.3g / CM, tensile length: 13.72-34.3mm, elongation: 150-400%, compression strength: 12Mpa, dynamic friction coefficient: 0.06, temperature: -200-260, strong and weak acid and alkali and solution influence: no

[0025] The sealing film 2 is made of food-grade cling film, and the material is PVC (polyvinyl chloride).

[0026] The working process of a low-cost, easy-to-maintain paint supply device is as follows:

[0027] Paint preparation:

[0028] The prepared paint and gun cleaning liquid are respectively injected into different disposable paint bags 1, a sealing film 2 is put on the opening of the disposable paint bag 1, and a disposable perforated cover cap 3 is covered and tightened for standby use.

[0029] Device connection:

[0030] Unscrew the eye screw 8, remove the pressure barrel cover 7, and place the disposable paint bag 1 pre-filled with paint on the fixing fixture 5 inside the pressure barrel body 6 and clamp it. One end of the disposable paint supply tube 4 is connected to the ferrule joint 14, and the other sharp end part pierces the sealing film 2 through the discharge joint 10 and the disposable perforated cap 3 and enters the disposable paint bag 1. Place the pressure barrel cover 7 on the pressure barrel body 6, tighten the eye screw 8 and the discharge joint 10, and fix the pressure barrel cover 7 and the disposable paint supply tube 4. Open the high-pressure gas source valve 18 and check the sealing of the entire device.

[0031] Spraying operation:

[0032] After checking that the sealing is in good condition, start the spray gun 16 for spraying operation. High-pressure gas is sent out from the high-pressure gas source 19, enters the pressure barrel body 6 through the high-pressure gas source valve 18, the air inlet pipe 17, and the air inlet 11, squeezes the disposable paint bag 1, and pushes the paint along the disposable paint supply pipe 4 and the spray gun paint supply pipe 15 to the spray gun 16 for spraying.

[0033] Finish of spraying:

[0034] After the spraying operation is completed, close the spray gun 16 and the high-pressure air source valve 18. After the pressure in the pressure barrel body 6 is released, unscrew the eye screw 8 and the discharge joint 10, remove the pressure barrel cover 7, pull out the disposable paint supply tube 4 from the disposable paint bag 1, and take out the used disposable paint bag 1 with residual paint.

[0035] Cleaning preparation:

[0036] Place the disposable paint bag 1 pre-filled with gun washing liquid on the fixing fixture 5 inside the pressure barrel body 6 and clamp it. The sharp part of the disposable paint supply tube 4 passes through the discharge joint 10, pierces the sealing film 2 and enters the disposable paint bag 1. Place the pressure barrel cover 7 on the pressure barrel body 6, tighten the eye screw 8 and the discharge joint 10, and fix the pressure barrel cover 7 and the disposable paint supply tube 4. Open the high-pressure gas source valve 18 and check the sealing of the entire device.

[0037] Cleaning operations:

[0038] After checking that the sealing is in good condition, start the spray gun 16 for cleaning operation. High-pressure gas is sent out from the high-pressure gas source 19, enters the pressure barrel body 6 through the high-pressure gas source valve 18, the air inlet pipe 17, and the air inlet port 11, and squeezes the disposable paint bag 1 to push the gun washing liquid along the disposable paint supply pipe 4 and the spray gun paint supply pipe 15 to flow to the spray gun 16 for cleaning.

[0039] Cleaning completed:

[0040] After the cleaning operation is completed, close the spray gun 16 and the high-pressure gas source valve 18; after the pressure in the pressure barrel body 6 is released, unscrew the eye screw 8 and the discharge joint 10, remove the pressure barrel cover 7, pull out the disposable paint supply tube 4 from the disposable paint bag 1 and the ferrule joint 14, and take out the used disposable paint bag 1 with residual gun washing liquid. The disposable paint bag 1, disposable paint supply tube 4, disposable opening cap 3, and sealing film 2 used in the spraying and cleaning process are treated as consumables for environmentally friendly disposal.

Claims

1. A low-cost, easy-to-maintain paint supply device, characterized in that: It consists of a disposable paint bag (1), a sealing film (2), a perforated cover (3), a disposable paint supply tube (4), a fixing fixture (5), a pressure barrel body (6), a pressure barrel cover (7), eye screws (8), a discharge port (9), a discharge joint (10), an air inlet (11), a safety valve (12), an exhaust valve (13) and an air inlet pipe (17); A sealing film (2) is arranged at the opening of the disposable paint bag (1); a disposable perforated cover cap (3) is arranged on the sealing film (2); the disposable perforated cover cap (3) is connected to the disposable paint bag (1) via a thread and is tightly covered; the sharp end of the disposable paint supply tube (4) pierces the sealing film (2) through the disposable perforated cover cap (3) and enters the disposable paint bag (1); a fixing fixture (5) is arranged on the inner side wall of the pressure barrel body (6); the disposable paint bag (1) is clamped by the fixing fixture (5) and fixed in the pressure barrel body (6); The pressure barrel cover (7) is fixed to the pressure barrel body (6) by means of eye screws (8); the discharge port (9) is arranged at the center of the upper surface of the pressure barrel cover (7); the discharge connector (10) is connected to the discharge port (9) by means of threads; the sharp end of the disposable paint supply pipe (4) enters the pressure barrel body (6) through the discharge connector (10), and the other end is connected to the spray gun (16) through a ferrule joint (14) and a spray gun paint supply pipe (15); the air inlet (11), the safety valve (12), and the exhaust valve (13) are evenly arranged on the periphery of the upper surface of the pressure barrel cover (7); one end of the air inlet pipe (17) is connected to the air inlet (11), and the other end is connected to the high-pressure gas source valve (18).

2. A low-cost, easy-to-maintain paint supply device according to claim 1, characterized in that: The disposable paint bag (1) and the disposable perforated cover cap (3) are transparent self-supporting nozzle bags.

3. A low-cost, easy-to-maintain paint supply device according to claim 1, characterized in that: After checking that the sealing is in good condition, the spray gun (16) is started to spray. High-pressure gas is sent out from the high-pressure gas source (19), enters the interior of the pressure barrel body (6) through the high-pressure gas source valve (18), the air inlet pipe (17), and the air inlet port (11), squeezes the disposable paint bag (1), and pushes the paint to flow along the disposable paint supply pipe (4) and the spray gun paint supply pipe (15) to the spray gun (16) for spraying. After the spraying operation is completed, the spray gun (16) and the high-pressure air source valve (18) are closed; after the pressure inside the pressure barrel body (6) is released, the eye screw (8) and the discharge joint (10) are unscrewed, the pressure barrel cover (7) is removed, the disposable paint supply tube (4) is pulled out from the disposable paint bag (1), and the used disposable paint bag (1) with residual paint is taken out.

4. A low-cost, easy-to-maintain paint supply device according to claim 1, characterized in that: A disposable paint bag (1) pre-filled with gun cleaning liquid is placed on a fixing fixture (5) inside a pressure barrel body (6) and clamped; the sharp portion of the disposable paint supply tube (4) passes through the discharge joint (10), pierces the sealing film (2) and enters the disposable paint bag (1); a pressure barrel cover (7) is placed on the pressure barrel body (6), the eye screw (8) and the discharge joint (10) are tightened, and the pressure barrel cover (7) and the disposable paint supply tube (4) are fixed; the high-pressure gas source valve (18) is opened, and the sealing of the entire device is checked; After checking that the sealing is in good condition, the spray gun (16) is started for cleaning operation. High-pressure gas is sent out from the high-pressure gas source (19), enters the interior of the pressure barrel body (6) through the high-pressure gas source valve (18), the air inlet pipe (17), and the air inlet port (11), squeezes the disposable paint bag (1) to push the gun cleaning liquid along the disposable paint supply pipe (4) and the spray gun paint supply pipe (15) to flow to the spray gun (16) for cleaning; After the cleaning operation is completed, close the spray gun (16) and the high-pressure gas source valve (18); after the pressure inside the pressure barrel body (6) is released, unscrew the eye screw (8) and the discharge joint (10), remove the pressure barrel cover (7), pull out the disposable paint supply tube (4) from the disposable paint bag (1) and the ferrule joint (14), and take out the used disposable paint bag (1) with residual gun washing liquid; the disposable paint bag (1), disposable paint supply tube (4), disposable perforated cap (3), and sealing film (2) used in the spraying and cleaning process are treated as consumables for environmentally friendly disposal.

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