Curtain coating equipment for PC glass processing

Abstract

The invention discloses PC glass processing shower coating equipment which comprises a rack table, a horizontal belt conveyor is arranged in the middle of the upper portion of the rack table, and two longitudinal moving seats with L-shaped sections are symmetrically arranged at the two ends of the upper portion of the rack table in a sliding mode. A longitudinal driving mechanism for driving the two longitudinal moving seats to linearly move is arranged between the rack table and the two longitudinal moving seats; two guide connecting rods are symmetrically and fixedly arranged between the upper portions of the two longitudinal moving bases, a transverse moving base is arranged between the two guide connecting rods in a common sliding mode, and a transverse driving mechanism used for driving the transverse moving base to move linearly is arranged between the two longitudinal moving bases. And a shower coating assembly is arranged at the bottom of the transverse moving seat. The automatic coating device can meet the requirement for automatic coating operation of large-size PC glass plates, can effectively cover the whole coating area of the glass, and can ensure that a coating is uniformly distributed on the surface of the PC glass of a curved surface structure.

Description

Technical Field

[0001] This invention relates to the field of PC glass processing equipment technology, and in particular to a coating equipment for PC glass processing. Background Technology

[0002] With the automotive industry's increasing demands for the performance of transparent or translucent sheets such as PC (polycarbonate) glass, the need for functional coatings (such as anti-reflective, hardening, and anti-glare coatings) is growing. Curtain coating, as a highly efficient and uniform coating process, is widely used for the surface treatment of such sheets. Traditional curtain coating equipment often uses nozzles that can only move in one direction (e.g., horizontally or vertically), or employs fixed multi-nozzle arrays. For PC glass sheets of different sizes, especially larger ones, it is difficult to achieve precise and flexible coverage of the entire planar area above the sheet, easily leading to uneven coating thickness and poor coating results at the edges or center.

[0003] Furthermore, automotive windows, sunroofs, and other components are increasingly using PC glass with curved shapes. Compared to flat glass, curved PC glass not only allows for more streamlined designs but also offers significant advantages in terms of weight reduction and impact resistance. However, existing coating equipment is primarily designed for flat surfaces, and the nozzle angles of its coating heads are based on a two-dimensional planar assumption. When applied to curved glass, the fixed-angle nozzles cannot ensure that the coating liquid is always applied along the normal to the curved glass surface, resulting in extremely uneven coating distribution on the curved surface. This easily leads to defects such as paint accumulation, runs, or excessively thin coatings on the glass surface. Summary of the Invention

[0004] The purpose of this invention is to provide a coating equipment for PC glass processing, which solves the technical problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: This invention discloses a coating equipment for PC glass processing, comprising a frame platform. A horizontal belt conveyor is disposed at the middle of the upper part of the frame platform. Two longitudinally moving seats with L-shaped cross-sections are symmetrically slidably disposed at both ends of the upper part of the frame platform. A longitudinal drive mechanism for driving the two longitudinally moving seats to move linearly is disposed between the frame platform and the two longitudinally moving seats. Two guide connecting rods are symmetrically fixedly disposed between the upper parts of the two longitudinally moving seats. A transverse moving seat is slidably disposed between the two guide connecting rods, and a transverse drive mechanism for driving the transverse moving seat to move linearly is disposed between the two longitudinally moving seats. A coating assembly is disposed at the bottom of the transverse moving seat. The coating assembly is connected to one end of an L-shaped connector fixedly disposed on one of the longitudinally moving seats through a retractable first corrugated pipe. The other end of the L-shaped connector is connected to one end of a feed pipe fixedly disposed on the frame platform through a retractable second corrugated pipe. The other end of the feed pipe is connected to an external coating supply source.

[0006] Furthermore, two guide rails are symmetrically fixedly installed at the upper two ends of the frame platform near the outer side, and guide sliders adapted to the guide rails at the corresponding ends are fixedly installed at the bottom of the two longitudinal moving seats.

[0007] Furthermore, the longitudinal drive mechanism includes two symmetrically fixed transmission racks at both ends of the upper part of the frame platform near the inner side, and two first motors respectively fixed above the horizontal parts of the two longitudinal moving seats. The drive shaft of each first motor extends to the lower part of the longitudinal moving seat and is provided with a transmission gear adapted to the corresponding end of the transmission rack.

[0008] Furthermore, two guide sleeves are symmetrically fixedly arranged on the transverse moving seat, each of which slides in cooperation with the two guide connecting rods.

[0009] Furthermore, the lateral drive mechanism includes a transmission screw rotatably disposed in the middle of the upper part of the two longitudinal moving seats, and a second motor fixedly disposed on the outer side of one of the longitudinal moving seats for driving the transmission screw to rotate. A screw nut adapted to the transmission screw is fixedly disposed on the lateral moving seat.

[0010] Furthermore, the transmission screw is fitted with retractable corrugated protective covers on both sides of the transverse moving seat and between the two longitudinal moving seats. Each corrugated protective cover has a connecting plate fixedly installed at both ends. The two connecting plates are fixedly connected to the side of the transverse moving seat and the corresponding end of the longitudinal moving seat.

[0011] Furthermore, the coating assembly includes a feed pipe fixedly disposed at the bottom of the transverse moving seat, the side of the feed pipe being connected to the first corrugated pipe; and an adjustable coating nozzle being fixedly disposed at the lower end of the feed pipe and connected thereto.

[0012] Furthermore, the adjustable coating nozzle includes an adapter fixedly disposed at the lower end of the feed pipe and connected to the feed pipe. The lower end of the adapter is connected to the coating nozzle through a third corrugated pipe. A connecting plate is fixedly disposed on the side of the adapter along its radial direction. The connecting plate is fixedly connected to the outside of the transmission box. A third motor is fixedly disposed on the inner side of the top plate of the transmission box. The drive shaft of the third motor is connected to the upper end of the drive shaft. A drive bevel gear is disposed at the lower end of the drive shaft. A driven shaft is fixedly disposed on the outer periphery of the coating nozzle along its radial direction. The driven shaft extends into the interior of the transmission box and is rotatably connected to the two side plates of the transmission box. A driven bevel gear that meshes with the drive bevel gear is sleeved on the part of the driven shaft located inside the transmission box.

[0013] Furthermore, it also includes a waste discharge assembly fixedly installed on the upper part of the machine frame. The waste discharge assembly includes a waste collection hood fixedly installed on the upper part of the machine frame. A waste discharge pipe is fixedly installed on the upper part of the waste collection hood and connected thereto. An induced draft fan is installed at the connection between the waste collection hood and the waste discharge pipe.

[0014] Furthermore, the waste collection hood is provided with multiple shielding curtains at even intervals at both the front and rear ends.

[0015] Compared with the prior art, the beneficial technical effects of the present invention are as follows: This invention enables convenient adjustment of the position of the adjustable coating nozzle at the bottom of the transverse moving seat 10 through a longitudinal drive mechanism and a transverse drive mechanism, which can meet the needs of automatic coating operations for large-sized PC glass sheets and effectively cover the entire coating area of ​​the glass.

[0016] Furthermore, when dealing with PC glass with a curved surface, the adjustable coating nozzle of this invention can be conveniently adjusted. Specifically, the drive shaft is rotated by a third motor inside the transmission box. The meshing transmission of the drive bevel gear and the driven three gears causes the driven shaft to adjust the angle of the coating nozzle, so that the coating liquid sprayed from the coating nozzle is applied along the normal of the curved glass surface. This ensures that the coating is evenly distributed on the surface of the curved PC glass and avoids defects such as paint accumulation, runs, or excessive thinness on the glass surface. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] Figure 1This is a schematic diagram of the structure of Embodiment 1 of the present invention; Figure 2 This is a schematic diagram showing the connection between the longitudinal moving seat and the frame platform of the present invention; Figure 3 This is a schematic diagram of the installation of the transverse movable seat of the present invention; Figure 4 This is a schematic diagram of the adjustable spray nozzle structure of the present invention; Figure 5 This is a schematic diagram of the installation state of the corrugated protective cover in Embodiment 2 of the present invention; Figure 6 This is a schematic diagram of the structure of Embodiment 3 of the present invention; Figure 7 This is a schematic diagram of the waste discharge component structure in Embodiment 3 of the present invention; Explanation of reference numerals in the attached drawings: 1. Frame; 2. Belt conveyor; 3. Longitudinal moving seat; 4. Guide rail; 5. Guide slider; 6. Transmission rack; 7. First motor; 8. Transmission gear; 9. Guide connecting rod; 10. Lateral moving seat; 11. Guide sleeve; 12. Transmission screw; 13. Second motor; 14. Screw nut; 15. First bellows; 16. L-shaped connector; 17. Second bellows; 18. Feed pipe; 19. Feed inlet pipe; 20. Adapter; 21. Third bellows; 22. Coating nozzle; 23. Transmission box; 24. Third motor; 25. Drive shaft; 26. Drive bevel gear; 27. Driven shaft; 28. Driven bevel gear; 29. ​​Corrugated protective cover; 30. Connecting plate; 31. Waste collection cover; 32. Waste discharge pipe; 33. Exhaust fan; 34. Shielding curtain; 35. Connecting plate. Detailed Implementation

[0019] Example 1 like Figures 1-4 As shown, a coating equipment for PC glass processing includes a frame 1, and a horizontal belt conveyor 2 is installed in the middle of the upper part of the frame 1. The belt conveyor 2 is used to transport PC glass to be coated.

[0020] Two L-shaped longitudinal moving seats 3 are symmetrically slidably mounted at both ends of the upper part of the frame platform 1. Specifically, two guide rails 4 are symmetrically fixedly mounted near the outer side of the upper ends of the frame platform 1. Guide sliders 5 adapted to the guide rails 4 at the bottom of the two longitudinal moving seats 3 are respectively fixedly mounted. A longitudinal drive mechanism for driving the two longitudinal moving seats 3 to move linearly is provided between the frame platform 1 and the two longitudinal moving seats 3. In this embodiment, the longitudinal drive mechanism includes two transmission racks 6 symmetrically fixedly mounted near the inner side of the upper ends of the frame platform 1 and two first motors 7 respectively fixedly mounted above the horizontal part of the two longitudinal moving seats 3. The drive shaft of each first motor 7 extends to the bottom of the longitudinal moving seat 3 and is equipped with a transmission gear 8 adapted to the transmission rack 6 at the corresponding end.

[0021] Two guide connecting rods 9 are symmetrically fixedly installed between the upper parts of the two longitudinal moving seats 3. A transverse moving seat 10 is slidably installed between the two guide connecting rods 9. Specifically, two guide sleeves 11 are symmetrically fixedly installed on the transverse moving seat 10, each slidingly engaging with one of the two guide connecting rods 9. A transverse drive mechanism for driving the transverse moving seat 10 to move linearly is provided between the two longitudinal moving seats 3. In this embodiment, the transverse drive mechanism includes a transmission screw 12 rotatably installed in the middle of the upper parts of the two longitudinal moving seats 3 and a second motor 13 fixedly installed on the outside of one of the longitudinal moving seats 3 for driving the transmission screw 12 to rotate. A screw nut 14 adapted to the transmission screw 12 is fixedly installed on the transverse moving seat 10.

[0022] A coating assembly is installed at the bottom of the transverse moving seat 10. The coating assembly is connected to one end of an L-shaped connector 16 fixedly installed on one of the longitudinal moving seats 3 via a retractable first corrugated pipe 15. The other end of the L-shaped connector 16 is connected to one end of a feed pipe 18 fixedly installed on the frame 1 via a retractable second corrugated pipe 17. The other end of the feed pipe 18 is connected to an external paint supply source.

[0023] The coating assembly includes a feed pipe 19 fixedly disposed at the bottom of the transverse moving seat 10, the side of the feed pipe 19 being connected to the first corrugated pipe 15; and an adjustable coating nozzle connected thereto is fixedly installed at the lower end of the feed pipe 19.

[0024] In this embodiment, the adjustable coating nozzle includes an adapter 20 fixedly installed at the lower end of the feed pipe 19 and connected to the feed pipe 19. The lower end of the adapter 20 is connected to the coating nozzle 22 through a third corrugated pipe 21. A connecting plate 35 is fixedly provided on the side of the adapter 20 along its radial direction. The connecting plate 35 is fixedly connected to the outer side of the transmission box 23. A third motor 24 is fixedly installed on the inner side of the top plate of the transmission box 23. The drive shaft of the third motor 24 is connected to the upper end of the drive shaft 25. A drive bevel gear 26 is installed on the lower end of the drive shaft 25. A driven shaft 27 is fixedly provided on the outer periphery of the coating nozzle 22 along its radial direction. The driven shaft 27 extends into the interior of the transmission box 23 and is rotatably connected to the two side plates of the transmission box 23. A driven bevel gear 28 that meshes with the drive bevel gear 26 is fitted on the part of the driven shaft 27 located inside the transmission box 23.

[0025] In this invention, each of the first motor 7, the second motor 13, and the third motor 24 is a servo motor.

[0026] The specific working principle of this embodiment is as follows: After the glass to be coated is conveyed to the middle position of the frame platform 1 by the belt conveyor 2, the external coating supply source sequentially conveys the coating to the adjustable coating nozzle through the feed pipe 18, the second corrugated pipe 17, the L-shaped connector 16, the first corrugated pipe 15, and the feed pipe 19 to begin coating the PC glass surface with a functional coating. During the coating process, two first motors 7 drive two transmission gears 8 to rotate synchronously. Since the rotating transmission gears 8 are engaged with the corresponding transmission racks 6, the two longitudinal moving tables 3 move linearly along the guide rails 4 on the upper part of the frame platform 1 under the action of the meshing force. In addition, the second motor 7 drives the transmission screw 12 to rotate. Since the transverse moving seat 10 is connected to the transmission screw 12 by the screw nut 14, the rotation of the transmission screw 12 is converted into the linear movement of the transverse moving seat 10. Therefore, the present invention realizes convenient adjustment of the position of the adjustable coating nozzle at the bottom of the transverse moving seat 10 through the longitudinal driving mechanism and the transverse driving mechanism, which can meet the needs of automatic coating operation for large-sized PC glass sheets and can effectively cover the entire coating area of ​​the glass.

[0027] Furthermore, when dealing with PC glass with a curved surface, the adjustable coating nozzle orientation of the coating nozzle can be easily adjusted. Specifically, the third motor 24 inside the transmission box drives the drive shaft 25 to rotate, thereby the meshing transmission action of the drive bevel gear 26 and the driven three gears 28 causes the driven shaft 27 to drive the coating nozzle 22 to adjust the angle, so that the coating liquid sprayed by the coating nozzle 22 is applied along the normal of the curved glass surface, thereby ensuring that the coating is evenly distributed on the surface of the curved PC glass and avoiding defects such as paint accumulation, runs, or excessive thinness on the glass surface.

[0028] Example 2 This embodiment provides shielding and protection for the transmission lead screw 12 without altering the other structures of Embodiment 1 described above. Specifically, as follows: Figure 5 As shown, the transmission screw 12 is fitted with retractable corrugated protective covers 29 on both sides of the transverse moving seat 10 and between the two longitudinal moving seats 3. Each of the corrugated protective covers 29 has a connecting plate 30 fixedly installed at both ends. The two connecting plates 30 are fixedly connected to the side of the transverse moving seat 10 and the corresponding end of the longitudinal moving seat 3 by screws.

[0029] This implementation isolates the transmission screw 12 from the paint dust generated during the coating process by fitting a retractable corrugated protective cover 29 on the outside of the transmission screw 12, thus preventing the paint dust from accumulating on the surface of the transmission screw 12 and affecting its normal transmission performance.

[0030] Example 3 This embodiment does not change the other structures of Embodiment 1 described above, such as... Figures 6-7 As shown, a waste discharge assembly is fixedly installed on the upper part of the machine frame 1. The waste discharge assembly includes a waste collection hood 31 fixedly installed on the upper part of the machine frame 1. A waste discharge pipe 32 connected to the waste collection hood 31 is fixedly installed on the upper part of the waste collection hood 31, and an induced draft fan 33 is installed at the connection between the waste collection hood 31 and the waste discharge pipe 32. Under the action of the induced draft fan 33, the paint dust and hazardous waste gases generated during the coating process can be discharged to the external purification system through the waste discharge pipe 32. In addition, multiple shielding curtains 34 are evenly spaced at both ends of the waste collection hood 31 to prevent paint dust from spreading and to create a good workshop environment.

[0031] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A coating equipment for PC glass processing, characterized in that: The system includes a frame platform, with a horizontal belt conveyor positioned at the upper center of the frame platform. Two L-shaped longitudinal moving seats are symmetrically slidably mounted at both ends of the upper part of the frame platform. A longitudinal drive mechanism for driving the two longitudinal moving seats to move linearly is provided between the frame platform and the two longitudinal moving seats. Two guide connecting rods are symmetrically fixed between the upper parts of the two longitudinal moving seats. A transverse moving seat is slidably mounted between the two guide connecting rods, and a transverse drive mechanism for driving the transverse moving seat to move linearly is provided between the two longitudinal moving seats. A coating assembly is mounted at the bottom of the transverse moving seat. The coating assembly is connected to one end of an L-shaped connector fixedly mounted on one of the longitudinal moving seats via a retractable first corrugated pipe. The other end of the L-shaped connector is connected to one end of a feed pipe fixedly mounted on the frame platform via a retractable second corrugated pipe. The other end of the feed pipe is connected to an external paint supply source.

2. The coating equipment for PC glass processing according to claim 1, characterized in that: Two guide rails are symmetrically fixed at both ends of the upper part of the frame platform near the outer side, and guide sliders adapted to the guide rails at the corresponding ends are fixedly installed at the bottom of the two longitudinal moving seats.

3. The coating equipment for PC glass processing according to claim 3, characterized in that: The longitudinal drive mechanism includes two symmetrically fixed transmission racks at both ends of the upper part of the frame platform near the inner side, and two first motors respectively fixed above the horizontal parts of the two longitudinal moving seats. The drive shaft of each first motor extends to the lower part of the longitudinal moving seat and is provided with a transmission gear adapted to the corresponding end of the transmission rack.

4. The coating equipment for PC glass processing according to claim 1, characterized in that: Two guide sleeves are symmetrically fixed on the transverse moving seat, each of which slides in cooperation with the two guide connecting rods.

5. The coating equipment for PC glass processing according to claim 4, characterized in that: The lateral drive mechanism includes a transmission screw rotatably disposed in the middle of the upper part of the two longitudinal moving seats and a second motor fixedly disposed on the outside of one of the longitudinal moving seats for driving the transmission screw to rotate. A screw nut adapted to the transmission screw is fixedly disposed on the lateral moving seat.

6. The coating equipment for PC glass processing according to claim 5, characterized in that: The transmission screw is fitted with retractable corrugated protective covers on both sides of the transverse moving seat and between the two longitudinal moving seats. Each corrugated protective cover has a connecting plate fixedly installed at both ends. The two connecting plates are fixedly connected to the side of the transverse moving seat and the corresponding end of the longitudinal moving seat.

7. The coating equipment for PC glass processing according to claim 1, characterized in that: The coating assembly includes a feed pipe fixedly installed at the bottom of the transverse moving seat, the side of the feed pipe being connected to the first corrugated pipe; and an adjustable coating nozzle fixedly installed at the lower end of the feed pipe and connected thereto.

8. The coating equipment for PC glass processing according to claim 7, characterized in that: The adjustable coating nozzle includes an adapter fixedly installed at the lower end of the feed pipe and connected to the feed pipe. The lower end of the adapter is connected to the coating nozzle through a third corrugated pipe. A connecting plate is fixedly installed on the side of the adapter along its radial direction. The connecting plate is fixedly connected to the outside of the transmission box. A third motor is fixedly installed on the inner side of the top plate of the transmission box. The drive shaft of the third motor is connected to the upper end of the drive shaft. A drive bevel gear is installed at the lower end of the drive shaft. A driven shaft is fixedly installed on the outer periphery of the coating nozzle along its radial direction. The driven shaft extends into the interior of the transmission box and is rotatably connected to the two side plates of the transmission box. A driven bevel gear that meshes with the drive bevel gear is sleeved on the part of the driven shaft located inside the transmission box.

9. The coating equipment for PC glass processing according to claim 1, characterized in that: It also includes a waste discharge assembly fixedly installed on the upper part of the machine frame. The waste discharge assembly includes a waste collection hood fixedly installed on the upper part of the machine frame. A waste discharge pipe connected to the waste collection hood is fixedly installed on the upper part of the waste collection hood, and an induced draft fan is installed at the connection between the waste collection hood and the waste discharge pipe.

10. The coating equipment for PC glass processing according to claim 9, characterized in that: The waste collection hood is provided with multiple shielding curtains at even intervals at both the front and rear ends.

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