Feeding system for powder coating

Abstract

The utility model discloses a feeding system for powder coating, and relates to the technical field of powder coating feeding, the feeding system comprises a negative pressure unit, a mixing unit, a taking unit and a conveying unit, the negative pressure unit comprises a vacuum pump, and the vacuum pump is connected with a negative pressure pipe; the mixing unit comprises a mixing tank, a discharge pipe is arranged at the bottom of the mixing tank, a top cover is arranged on the mixing tank, a stirring mechanism is mounted on the top cover, and a suction pipe is arranged on the top cover; the material taking unit comprises a material taking driving cylinder, and a cylinder cover is arranged at the output end of the material taking driving cylinder; the material conveying unit comprises a machine frame, a rotating disc is rotationally arranged on the machine frame, a plurality of measuring cylinders are arranged on the rotating disc, and the cylinder covers are matched with the measuring cylinders under the control of the material taking driving cylinder. The negative pressure unit, the material mixing unit, the material taking unit and the material conveying unit are arranged, manual work is replaced, mechanical feeding is achieved, the feeding efficiency is improved, and the labor intensity is reduced.

Description

Technical Field

[0001] This utility model relates to the field of powder coating feeding technology, and in particular to a feeding system for powder coatings. Background Technology

[0002] Powder coating is a surface treatment method that involves spraying plastic powder onto parts. Also known as electrostatic powder coating, it is a widely adopted decorative technique for metal surface treatment since the 1980s. Compared to ordinary spray painting, this technology offers advantages such as advanced process, energy efficiency, safety, reliability, and vibrant colors. Therefore, it is frequently used in light industry and home decoration. Its working principle involves charging plastic powder through a high-voltage electrostatic device. Under the influence of the electric field, the powder is sprayed onto the surface of the workpiece, where it is evenly adsorbed, forming a powdery coating. After high-temperature baking, this powdery coating flows and solidifies, melting the plastic particles into a dense final protective coating with varying effects, firmly adhering to the workpiece surface. A powder coating container is located on one side of the powder coating machine for feeding the powder.

[0003] In order to obtain the required coating color during powder coating, various weighed granular masterbatches need to be thoroughly mixed in a mixing tank beforehand. After mixing, they are extruded and ground to obtain powder of the corresponding color. Currently, when adding various bagged granular masterbatches into the mixing tank, the weighed masterbatches are manually transported to the feed port on top of the mixing tank using a ladder and then added into the mixing tank. However, this feeding method is extremely physically demanding for workers and has a high labor intensity. As physical strength is depleted, the feeding efficiency also decreases, which in turn affects the normal mixing process.

[0004] Therefore, there is an urgent need for a feeding system for powder coatings to reduce the labor intensity of workers and improve feeding efficiency. Utility Model Content

[0005] To address the aforementioned technical problems, this utility model provides a feeding system for powder coatings, which solves the problems of high labor intensity and low work efficiency caused by manually adding materials to the mixing tank.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0007] A feeding system for powder coatings includes a negative pressure unit, a mixing unit, a material taking unit, and a material conveying unit. The negative pressure unit includes a vacuum pump, and a negative pressure pipe is connected to the vacuum pump.

[0008] The mixing unit includes a mixing tank, a discharge pipe at the bottom of the mixing tank, a top cover on the mixing tank, a stirring mechanism for mixing materials installed on the top cover, a negative pressure pipe extending into the mixing tank through the top cover, and a suction pipe on the top cover.

[0009] The material handling unit includes a support frame, on which a material handling drive cylinder is mounted. The output end of the material handling drive cylinder is provided with a cylinder cover, and the cylinder cover is provided with a through hole. The suction pipe passes through the through hole.

[0010] The material conveying unit includes a frame, on which a turntable is rotatably mounted. Multiple measuring cylinders are arranged circumferentially on the turntable, and the cylinder cover is engaged with the measuring cylinder under the control of the material picking drive cylinder.

[0011] Furthermore, the turntable has the same number of U-shaped guide grooves at the position of the measuring cylinder, and the end of the U-shaped guide groove near the center of the turntable has a cylinder placement opening, in which the measuring cylinder is placed.

[0012] Furthermore, it also includes a material transfer unit, which includes a mounting base disposed on one side of the frame. The bottom of the mounting base is provided with a lifting drive cylinder, and the output end of the lifting drive cylinder is provided with a lifting seat. Under the action of the lifting drive cylinder, the lifting seat lifts the measuring cylinder to the turntable position. One end of the lifting seat is provided with a pushing drive cylinder, and the output end of the pushing drive cylinder is provided with a push plate. Under the control of the pushing drive cylinder, the push plate pushes the measuring cylinder on the lifting seat forward.

[0013] Furthermore, the lifting seat is provided with limiting plates on both sides, and the end of the lifting seat near the turntable is a concave arc shape.

[0014] Furthermore, the frame is provided with a support frame on the bottom circumference of the turntable, and a support pulley is rotatably mounted on the support frame.

[0015] Furthermore, a brake drive cylinder is provided below the turntable on the frame, and a brake element is provided at the output end of the brake drive cylinder.

[0016] Furthermore, the suction tube includes a flexible tube and a rigid tube, the flexible tube being located between the top cover and the cylinder cover, and the rigid tube being a section placed inside the measuring cylinder through the cylinder cover.

[0017] Furthermore, a control valve is provided on the discharge pipe, and a first collecting ring is provided at the bottom of the mixing tank. The first collecting ring is used to gather the material towards the discharge pipe.

[0018] Furthermore, the inner bottom of the measuring cylinder is provided with a second collecting ring, which is used to gather the material into the rigid tube.

[0019] In summary, the beneficial technical effects of this utility model are as follows:

[0020] (1) A vacuum pump is used to draw air out of the mixing tank through a negative pressure pipe, so that the mixing tank is in a negative pressure state. During the feeding process, the turntable rotates each measuring cylinder to the bottom of the cylinder cover. Then, the material picking drive cylinder closes the cylinder cover onto the measuring cylinder. Then, the negative pressure pipe draws the material in the measuring cylinder into the mixing tank through the negative pressure in the mixing tank to achieve mechanical feeding, thereby improving feeding efficiency and reducing the labor intensity of the workers.

[0021] (2) The use of a turntable to place the measuring cylinder under the cylinder cover instead of manual labor improves the mechanization of the whole system. At the same time, the lifting drive cylinder controls the lifting seat to lift the weighed measuring cylinder to the turntable position, and the pushing drive cylinder pushes the measuring cylinder into the cylinder opening. This eliminates the need for workers to manually move the measuring cylinder to the higher position of the turntable after weighing it, thereby reducing labor intensity.

[0022] (3) By using a brake drive cylinder to control the brake components, the turntable can be fixed when the measuring cylinder is transferred into the cylinder opening or when the measuring cylinder and the cylinder cover are in contact, thereby improving the contact efficiency between the cylinder cover and the measuring cylinder.

[0023] (4) The use of flexible tubes makes it easy for the material-taking drive cylinder to be uninterrupted when controlling the lifting and lowering of the cylinder cover. At the same time, the rigid tubes ensure that the material is inserted into the bottom of the measuring cylinder, making the suction of the material more thorough. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of this utility model;

[0025] Figure 2 This is a structural schematic diagram of the present invention from another angle;

[0026] Figure 3 This is a structural schematic diagram of the present invention from a third angle;

[0027] Figure 4 yes Figure 3 A schematic diagram of the cross-section of part A;

[0028] Figure 5 This is a schematic diagram of the turntable's structure;

[0029] Figure 6 yes Figure 2 Enlarged schematic diagram of part A;

[0030] Figure 7 yes Figure 3 Enlarged schematic diagram of part B;

[0031] Figure 8 This is a schematic diagram showing the position of the rigid tube inside the measuring cylinder.

[0032] Reference numerals: 1. Vacuum pump; 2. Mixing tank; 3. Discharge pipe; 4. Control valve; 5. Frame; 6. Turntable; 7. Measuring cylinder; 8. Support; 9. Negative pressure pipe; 10. Top cover; 11. Stirring motor; 12. Stirring paddle; 13. Suction pipe; 14. Flexible pipe; 15. Rigid pipe; 16. Material handling drive cylinder; 17. Cylinder cover; 18. U-shaped guide groove; 19. Cylinder inlet; 20. Mounting base; 21. Lifting drive cylinder; 22. Lifting seat; 23. Guide rod; 24. Pushing drive cylinder; 25. Push plate; 26. Limiting plate; 27. Support pulley; 28. Braking drive cylinder; 29. ​​Braking component; 30. First collecting ring; 31. Air pressure balance port; 32. Second collecting ring. Detailed Implementation

[0033] The present invention will now be described clearly and completely with reference to the embodiments.

[0034] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0035] In the description of the embodiments, unless otherwise expressly specified and limited, the terms "set," "connect," etc., should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or a connection through an intermediate medium, or it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0036] See appendix Figure 1-7 The figure shows a feeding system for powder coatings, including a negative pressure unit, a mixing unit, a material taking unit, a material conveying unit, and a material transfer unit. The negative pressure unit includes a vacuum pump 1, the output end of which is connected to a negative pressure pipe 9. The mixing unit includes a mixing tank 2, with support legs at the bottom and a discharge pipe 3 for discharging material at the center of the bottom. A control valve 4 is provided on the discharge pipe 3. A top cover 10 is provided on the top of the mixing tank 2, which is bolted to the mixing tank 2. A sealing ring is provided on the side of the top cover 10 near the mixing tank 2. A stirring motor 11 is installed in the center of the top cover 10. The output end of the stirring motor 11 is located inside the mixing tank 2 and a stirring paddle 12 is provided. During mixing, the stirring motor 11 drives the stirring paddle 12 to achieve mixing of various materials. A suction pipe 13 is also provided on the top cover 10, which consists of two sections: a flexible pipe 14 and a rigid pipe 15. The flexible pipe 14 is connected to the top cover 10.

[0037] The material handling unit includes an inverted L-shaped support 8, on which a material handling drive cylinder 16 is vertically mounted. The output end of the material handling drive cylinder 16 is provided with a cylinder cover 17, and a through hole is provided on the cylinder cover 17. A rigid tube 15 is installed in the through hole. When feeding, the cylinder cover 17 is raised and lowered by the material handling drive cylinder 16. During the raising and lowering process, the reaction force on the material handling drive cylinder 16 is reduced by the flexible tube 14 and the rigid interference between the two is avoided. In addition, an air pressure balance port 31 is provided on the cylinder cover 17.

[0038] The material conveying unit includes a frame 5. A rotary motor is located at the bottom of the frame 5, and a turntable 6 is located at the output end of the rotary motor. Four U-shaped guide grooves 18 with outward openings are formed on the circumference of the turntable 6. A cylinder inlet 19 is formed at one end of the U-shaped guide groove 18 near the center of the turntable 6. A measuring cylinder 7 is placed in the cylinder inlet 19. During material feeding, the operator weighs out various materials according to the proportions, places the weighed materials into the measuring cylinders 7, and then places each measuring cylinder 7 into its corresponding cylinder inlet 19. In the process of feeding, the rotating motor drives the turntable 6 to rotate, and the turntable 6 rotates the corresponding measuring cylinder 7 to the bottom of the cylinder cover 17. Then, the material picking drive cylinder 16 drives the cylinder cover 17 to descend and fasten onto the measuring cylinder 7. Then, the mixing tank 2 uses the internal negative pressure to suck the material in the measuring cylinder 7 into the interior through the suction pipe 13, thereby realizing feeding. In this process, the mechanical feeding method replaces manual feeding, which not only improves the feeding efficiency, but also reduces the labor intensity and realizes mechanized feeding.

[0039] Furthermore, the material transfer unit includes a mounting base 20 fixed to one side of the frame 5. A lifting drive cylinder 21 is installed at the bottom of the mounting base 20. A lifting seat 22 is provided at the output end of the lifting drive cylinder 21. Four guide rods 23 are provided on one side of the lifting seat 22. A pushing drive cylinder 24 is installed at one end of the lifting seat 22 along the direction perpendicular to the axis of the turntable 6. A push plate 25 is provided at the output end of the pushing drive cylinder 24. Limiting plates 26 are provided on both sides of the push plate 25. During the material loading process, the operator places the weighed measuring cylinder 7 on the lifting seat 22. Then, the lifting drive cylinder 21 drives the lifting seat 22 to lift it upward and place it at the same level as the U-shaped guide groove 18. Then, the pushing drive cylinder 24 drives the push plate 25 to push the measuring cylinder 7 into the cylinder inlet 19. This eliminates the need for the operator to carry the measuring cylinder 7 from a low position to the high turntable 6, further reducing labor intensity.

[0040] Furthermore, the frame 5 is provided with multiple support frames on the lower circumference of the turntable 6, and the support frames are rotatably equipped with support pulleys 27, which improves the stability of the turntable 6 when rotating.

[0041] Furthermore, a brake drive cylinder 28 is provided below the turntable 6 on the frame 5. The output end of the brake drive cylinder 28 is provided with a brake element 29. The brake element 29 is made of rubber. When the cylinder cover 17 is fastened to the measuring cylinder 7 or the measuring cylinder 7 is transferred from the lifting seat 22 to the cylinder opening 19, the brake drive cylinder 28 drives the brake element 29 to use friction to fix the turntable 6, thereby improving the fitting accuracy during fastening and transfer.

[0042] Furthermore, the mixing tank 2 has a first collecting ring 30 at its inner bottom, which is used to collect the material towards the discharge pipe 3. The measuring cylinder 7 has a second collecting ring 32 at its inner bottom, which is used to collect the material towards the rigid pipe 15. The cross-sections of the first collecting ring 30 and the second collecting ring 32 are both right-angled triangular structures. The first collecting ring 30 can more thoroughly discharge the material in the mixing tank 2, and the second collecting ring 32 can more thoroughly add the weighed material in the measuring cylinder 7 into the mixing tank 2, thereby improving the mixing accuracy.

[0043] During material loading, the weighed materials are first sorted and placed into each measuring cylinder 7. Then, the staff places the measuring cylinder 7 containing the materials on the lifting seat 22. The lifting drive cylinder 21 then drives the lifting seat 22 to rise to a position flush with the U-shaped guide groove 18. Then, the push drive cylinder 24 is activated to push the measuring cylinder 7 into the cylinder opening 19 using the push plate 25. During material loading, the measuring cylinder 7 is rotated to the bottom of the cylinder cover 17 by the turntable 6. Then, the picking drive cylinder 16 drives the cylinder cover 17 to be fastened onto the measuring cylinder 7. At this time, the rigid tube 15 can be inserted into the material and reach the bottom of the measuring cylinder 7. Then, the vacuum pump 1 is activated to generate negative pressure in the mixing tank 2 using the negative pressure tube 9. The mixing tank 2 further uses the negative pressure and the suction tube 13 to suck the material in the measuring cylinder 7 into the interior to achieve material loading.

[0044] It should be noted that, see appendix Figure 8 As shown, the rigid tube 15 is inclined inside the measuring cylinder 7 and is positioned at the center of the second collecting ring 32. In this way, when the material is being sucked up, the material gathers at the position of the rigid tube 15 under the guidance of the second collecting ring 32, thus achieving thorough material suction.

[0045] The above description is only a preferred embodiment of the present utility model and is not intended to limit the scope of protection of the present utility model. Therefore, all equivalent changes made to the structure, shape and principle of the present utility model should be included within the scope of protection of the present utility model.

Claims

1. A powder loading system for powder coating, characterized by: Including negative pressure unit, mixing unit, taking material unit and conveying unit, the negative pressure unit includes vacuum pump (1), the vacuum pump (1) is connected with negative pressure pipe (9); The mixing unit includes mixing tank (2), the bottom of mixing tank (2) is provided with discharge pipe (3), the mixing tank (2) is provided with top cover (10), the top cover (10) is installed with stirring mechanism for mixing material, the negative pressure pipe (9) extends to mixing tank (2) through top cover (10), the top cover (10) is provided with suction pipe (13); The taking material unit includes support (8), the support (8) is provided with taking material drive cylinder (16), the output end of taking material drive cylinder (16) is provided with cylinder cover (17), the cylinder cover (17) is provided with through hole, the suction pipe (13) penetrates through hole; The conveying unit includes rack (5), the rack (5) is rotationally provided with rotating disc (6), a plurality of measuring cylinders (7) are circumferentially arranged on rotating disc (6), the cylinder cover (17) is matched with measuring cylinder (7) under the control of taking material drive cylinder (16).

2. A powder coating feeding system according to claim 1, characterized in that: The rotating disc (6) is provided with the same number of U-shaped guide grooves (18) at the position of measuring cylinder (7), the U-shaped guide groove (18) is provided with cylinder placing opening (19) at the end close to the center of rotating disc (6), and the measuring cylinder (7) is placed in the cylinder placing opening (19).

3. A powder coating feeding system according to claim 1, characterized in that: It also includes a material rotating unit, the material rotating unit includes a mounting seat (20) arranged on one side of the rack (5), the bottom of the mounting seat (20) is provided with a jacking drive cylinder (21), the output end of the jacking drive cylinder (21) is provided with a jacking seat (22), the jacking seat (22) is jacked to the position of the rotating disc (6) under the action of the jacking drive cylinder (21), one end of the jacking seat (22) is provided with a pushing drive cylinder (24), the output end of the pushing drive cylinder (24) is provided with a push plate (25), and the push plate (25) pushes the measuring cylinder (7) on the jacking seat (22) forward under the control of the pushing drive cylinder (24).

4. A powder coating feeding system according to claim 3, wherein: The jacking seat (22) is provided with a limiting plate (26) on both sides, and the end of the jacking seat (22) close to the rotating disc (6) is concave arc-shaped.

5. A powder feeding system for powder coating according to claim 1, characterized in that: The rack (5) is provided with a support frame at the bottom of the rotating disc (6), and the support pulley (27) is rotationally arranged on the support frame.

6. A powder coating feeding system according to claim 1, wherein: The rack (5) is provided with a brake drive cylinder (28) below the rotating disc (6), and the brake drive cylinder (28) is provided with a brake member (29) at the output end.

7. A powder feeding system for powder coating according to claim 1, characterized in that: The suction pipe (13) includes a flexible pipe (14) and a rigid pipe (15), the flexible pipe (14) is located between the top cover (10) and the cylinder cover (17), and the rigid pipe (15) is a section placed in the measuring cylinder (7) through the cylinder cover (17).

8. A powder coating feeding system according to claim 1, characterized in that: The discharge pipe (3) is provided with a control valve (4), and the inner bottom of the mixing tank (2) is provided with a first material collecting ring (30), and the first material collecting ring (30) is used for gathering material to the discharge pipe (3).

9. A powder coating feeding system according to claim 7, wherein: The inner bottom of the measuring cylinder (7) is provided with a second aggregate ring (32) for gathering material to the rigid tube (15).

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