A continuous coating device for plastic surfaces

Abstract

This utility model relates to a continuous plastic surface coating device, comprising a coating chamber, with columns connected to the four corners of the outer side of the coating chamber. A top seat is mounted on the top of each column, and a sliding groove is formed inside the top seat. A slider is inserted into the sliding groove, and transmission rods are inserted into both sides of the sliding seat. A connecting plate is mounted on the lower outer side of the transmission rod, and a cam is mounted on the lower surface of the connecting plate via a bearing. A base plate is connected to the outer side of the mounting frame at a position corresponding to the cam. A first motor is mounted on the top of the base plate, and a coating nozzle is mounted on the inner side of the transmission rod. This continuous plastic surface coating device, through the rotation of the cam driven by the first motor, can drive the coating nozzle to perform a reciprocating elliptical motion. This composite motion mode can effectively eliminate the coating dead angles easily generated by traditional fixed nozzles or single-direction moving nozzles.

Description

Technical Field

[0001] This utility model relates to the field of coating equipment, specifically to a continuous coating equipment for plastic surfaces. Background Technology

[0002] In modern industrial production, plastic products are widely used in many fields such as electronics, automobiles, medical devices, and daily necessities due to their advantages of light weight, low cost, and high plasticity. To improve the surface properties of plastic materials and expand their application scenarios, coating technology has become an important solution. By depositing one or more functional films on the surface of plastics, the surface hardness, wear resistance, corrosion resistance, and weather resistance of plastic products can be significantly improved.

[0003] Common plastic coating equipment often employs fixed nozzles or spray structures with unidirectional movement. Fixed nozzles, due to their fixed spray range, are prone to creating coating dead zones on curved surfaces or complex shapes of plastic parts. While unidirectional (e.g., linear reciprocating or circular rotation) nozzles can expand the coverage area, their movement trajectory still limits the possibility of repeated spraying or insufficient coverage in certain areas. Specifically, as the nozzle moves along a specific path, uneven film thickness occurs in certain areas of the plastic part due to insufficient nozzle dwell time or variations in spray distance. Furthermore, a single movement mode is difficult to adapt to the geometric features of different parts of the plastic part, especially at edges or corners where film defects are prone to occur, ultimately affecting the stability and consistency of the overall coating quality. Utility Model Content

[0004] The purpose of this invention is to solve the above-mentioned defects and provide a continuous coating device for plastic surfaces, which causes the coating nozzle to perform a reciprocating elliptical motion during coating, thus solving the technical problems of uneven film thickness and poor continuity caused by the fixed nozzle in the prior art.

[0005] The objective of this utility model is achieved through the following means: A continuous coating device for plastic surfaces includes a coating chamber, with columns connected to the four corners of the outer side of the coating chamber. A top seat is mounted on the top of each column, and a sliding groove is formed inside the top seat. A slider is inserted into the sliding groove, and a locking block is connected to the bottom of the slider. An assembly frame is mounted on the bottom of the locking block, and a mounting frame is connected to the bottom of the assembly frame. Assembly rods are mounted on both sides of the inner side of the mounting frame, and sliding seats are fitted onto the outer sides of the assembly rods. Transmission rods are inserted into both sides of the inner side of the sliding seats. A connecting plate is mounted on the lower outer side of the transmission rods, and a cam is mounted on the lower surface of the connecting plate via a bearing. A base plate is connected to the outer side of the mounting frame at a position corresponding to the cam. A first motor is mounted on the top of the base plate, and a coating nozzle is mounted on the inner side of the transmission rods.

[0006] Furthermore, a lead screw is screwed into the inside of the slider. The front end of the lead screw is connected to the corresponding position of the inner cavity of the slide groove through a ball bearing. A third motor is mounted on the rear part of the top seat at the position corresponding to the lead screw through a bracket. The outer end of the rotor of the third motor is coaxially connected to the rear end of the lead screw. The rotation of the lead screw can be driven by the third motor, thereby driving the movement of the slider, which facilitates the adjustment of the coating range of the coating nozzle.

[0007] Furthermore, the inside of the snap-fit ​​block and the top of the assembly frame are provided with through slots, and the top two sides of the mounting frame are equipped with assembly plates. The assembly plates and the assembly frame are connected by bolts and nuts, which facilitates disassembly and assembly.

[0008] Furthermore, the assembly rod is provided with a protruding strip on its outer circumference, and the rear end of each transmission rod is connected to a limit plate. The length of the transmission rod is greater than the length of the slide block, thus avoiding interference during the movement of the transmission rod.

[0009] Furthermore, the bottom of the first motor is connected to the upper surface of the base plate at a corresponding position. The interior of the coating chamber is equipped with a support frame inserted through a bearing. Both sides of the opening of the coating chamber are equipped with baffles to prevent material from spilling out during the coating process.

[0010] Furthermore, the front end of each support bracket penetrates through the corresponding position of the coating chamber, and each front end of each support bracket is coaxially connected to a pulley. Each pulley is fitted with a transmission belt. A second motor is mounted on the outside of the coating chamber at the position corresponding to the pulley on the side via a bracket, and the rotor of the second motor is coaxially connected to the pulley on the corresponding side.

[0011] The beneficial effects of this invention are as follows: the rotation of the cam driven by the first motor drives the movement of the transmission rod, which in turn drives the coating nozzle to perform a reciprocating elliptical motion in cooperation with the mounting rod and the slide. This composite motion mode can effectively eliminate the coating dead angles that are easily generated by traditional fixed nozzles or nozzles moving in one direction, and can make the coating material form a more uniform coverage on the surface of the plastic part. It avoids the problem of uneven film thickness caused by insufficient nozzle dwell time or distance deviation in local areas, and significantly improves the overall consistency of the coating. Secondly, the reciprocating elliptical motion allows the nozzle to dynamically spray the plastic part in a larger area, improving the continuity of the coating process. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic cross-sectional view of the top seat structure of this utility model; Figure 3 This is a schematic diagram of the assembly frame and mounting frame structure of this utility model; Figure 4 This is a schematic diagram of the mounting frame structure of this utility model; Figure 5 This is a schematic diagram of the assembly rod structure of this utility model; Figure 6 This is a schematic diagram of the coating chamber structure of this utility model.

[0013] In the diagram, 1. Coating chamber; 2. Column; 3. Top seat; 4. Slide groove; 41. Lead screw; 42. Third motor; 5. Slider; 6. Clamping block; 7. Assembly frame; 8. Assembly plate; 9. Mounting frame; 10. Assembly rod; 101. Protrusion; 11. Slide seat; 12. Transmission rod; 13. Base plate; 14. First motor; 15. Cam; 16. Connecting plate; 17. Coating nozzle; 18. Limiting plate; 19. Baffle; 20. Support frame; 21. Pulley; 22. Transmission belt; 23. Second motor. Detailed Implementation

[0014] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0015] In this embodiment, refer to Figures 1-6 The specific implementation of the continuous plastic surface coating device includes a coating chamber 1, with columns 2 connected to the four corners of the coating chamber 1. A top seat 3 is installed at the top of the columns 2. A sliding groove 4 is opened inside the top seat 3. A slider 5 is inserted inside the sliding groove 4. A snap-fit ​​block 6 is connected to the bottom of the slider 5. An assembly frame 7 is installed at the bottom of the snap-fit ​​block 6. An installation frame 9 is connected to the bottom of the assembly frame 7. Assembly rods 10 are installed on both sides inside the installation frame 9. A slide seat 11 is sleeved on the outside of the assembly rods 10. A transmission rod 12 is inserted on both sides inside the slide seat 11. A connecting plate 16 is installed on the lower side of the transmission rod 12. A cam 15 is installed on the lower surface of the connecting plate 16 through a bearing. A base plate 13 is connected to the outside of the installation frame 9 at a position corresponding to the cam 15. A first motor 14 is installed on the top of the base plate 13. A coating nozzle 17 is installed on the inner side of the transmission rod 12. The slider 5 is internally screwed with a lead screw 41. The front end of the lead screw 41 is connected to the corresponding position of the inner cavity of the slide groove 4 through a ball bearing. The rear part of the top seat 3 is equipped with a third motor 42 at the corresponding position of the lead screw 41 through a bracket. The outer end of the rotor of the third motor 42 is coaxially connected to the rear end of the lead screw 41. The inside of the snap block 6 is provided with a through slot at the corresponding position of the top of the assembly frame 7. The top two sides of the mounting frame 9 are equipped with assembly plates 8. The assembly plates 8 and the assembly frame 7 are connected by bolts and nuts. The first motor 14 drives the cam 15 to rotate, which in turn drives the transmission rod 12 to move. Simultaneously, with the cooperation of the mounting rod 10 and the slide 11, the coating nozzle 17 can perform a reciprocating elliptical motion. This composite motion mode can effectively eliminate the coating dead angles that are easily generated by traditional fixed nozzles or nozzles that move in one direction. It can make the coating material form a more uniform coverage on the surface of the plastic part, and avoid the problem of uneven film thickness caused by insufficient nozzle dwell time or distance deviation in local areas. It significantly improves the overall consistency of the coating. Secondly, the reciprocating elliptical motion allows the nozzle to dynamically spray plastic parts in a larger space, improving the continuity of the coating process. The assembly rod 10 is provided with a protruding strip 101 on its outer circumference. The rear end of the transmission rod 12 is connected to a limit plate 18. The length of the transmission rod 12 is greater than the length of the slide block 11. The bottom of the first motor 14 is connected to the upper surface of the base plate 13 at the corresponding position. The coating chamber 1 is provided with a support bracket 20 inserted through a bearing. The opening of the coating chamber 1 is provided with baffles 19 on both sides. The front end of each support frame 20 passes through the corresponding position of the coating chamber 1. Each front end of each support frame 20 is coaxially connected to a pulley 21. Each pulley 21 is fitted with a transmission belt 22. A second motor 23 is mounted on the outside of the coating chamber 1 at the position corresponding to the side pulley 21 via a bracket. The rotor of the second motor 23 is coaxially connected to the pulley 21 on the corresponding side.

[0016] This solution uses a first motor 14 to drive the rotation of the cam 15, which in turn drives the movement of the transmission rod 12. Simultaneously, with the cooperation of the mounting rod 10 and the slide 11, the coating nozzle 17 can perform a reciprocating elliptical motion. This composite motion mode can effectively eliminate the coating dead angles that are easily generated by traditional fixed nozzles or nozzles moving in one direction. It can make the coating material form a more uniform coverage on the surface of the plastic part, avoiding the problem of uneven film thickness caused by insufficient nozzle dwell time or distance deviation in local areas, and significantly improving the overall consistency of the coating. Secondly, the reciprocating elliptical motion allows the nozzle to dynamically spray the plastic part in a larger area, improving the continuity of the coating process.

[0017] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the scope of protection of the present invention.

Claims

1. A continuous coating apparatus for plastic surfaces, comprising a coating chamber, characterized in that: The coating chamber has four columns connected to its outer corners. Each column has a top seat at its top. The top seat has a groove inside, and a slider is inserted inside the groove. The bottom of the slider is connected to a locking block. An assembly frame is installed at the bottom of the locking block, and a mounting frame is connected to the bottom of the assembly frame. Assembly rods are installed on both sides inside the mounting frame. A slide is fitted on the outside of the assembly rod. A transmission rod is inserted on both sides inside the slide. A connecting plate is installed on the lower outside of the transmission rod, and a cam is installed on the lower surface of the connecting plate via a bearing. A base plate is connected to the outside of the mounting frame at a position corresponding to the cam. A first motor is installed on the top of the base plate, and a coating nozzle is installed on the inner side of the transmission rod.

2. The continuous coating apparatus for plastic surfaces according to claim 1, characterized in that: The slider is internally screwed with a lead screw, the front end of which is connected to the inner cavity of the slide groove via a ball bearing. The rear of the top seat is equipped with a third motor via a bracket at the position corresponding to the lead screw, and the outer end of the rotor of the third motor is coaxially connected to the rear end of the lead screw.

3. The continuous coating apparatus for plastic surfaces according to claim 1, characterized in that: The snap-fit ​​block has through slots at the corresponding positions on the top of the assembly frame. Assembly plates are installed on both sides of the top of the mounting frame. The assembly plates and the assembly frame are connected by bolts and nuts.

4. The continuous coating apparatus for plastic surfaces according to claim 1, characterized in that: The assembly rod is provided with a protruding strip on its outer circumference, and the rear end of each transmission rod is connected to a limit plate. The length of the transmission rod is greater than the length of the slide block.

5. The continuous coating apparatus for plastic surfaces according to claim 1, characterized in that: The bottom of the first motor is connected to the upper surface of the base plate at a corresponding position. The interior of the coating chamber is equipped with a support frame inserted through a bearing. Both sides of the opening of the coating chamber are equipped with baffles.

6. The continuous coating apparatus for plastic surfaces according to claim 5, characterized in that: The front end of each support frame passes through the corresponding position of the coating chamber. Each front end of each support frame is coaxially connected to a pulley. Each pulley is fitted with a transmission belt. A second motor is mounted on the outside of the coating chamber at the position corresponding to the pulley on the side via a bracket. The rotor of the second motor is coaxially connected to the pulley on the corresponding side.

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