A plastic plate heating device before knurling

Abstract

The utility model discloses a plastic plate knurling front heating device mainly relates to the technical field of heating device. Including setting between the knurling machine and the roll forming machine's heating mechanism, be equipped with the fixed frame between the knurling machine and the roll forming machine, be connected with a plurality of conveying rollers on the fixed frame rotation, the fixed frame is vertically slidably connected with the movable plate, the movable plate and the fixed frame all are equipped with heating unit, be equipped with the guide rod of sliding connection with the fixed frame on the movable plate, be equipped with the drive wheel of drive guide rod and slide on the fixed frame on the movable plate. The utility model has the beneficial effect that: solve the problem that the plastic part is cooled after cooling, influence knurling effect, improve the knurling effect of plastic plate.

Description

Technical Field

[0001] This utility model relates to the technical field of heating devices, specifically a heating device for pre-knurling of plastic sheets. Background Technology

[0002] A knurling machine is a device that uses a knurling wheel of a specific shape to create patterns or designs on a material. To enhance the aesthetics, anti-slip properties, or recognizability of a product's surface, knurling machines are typically used to print different patterns onto sheet materials.

[0003] After the plastic sheet is roll-formed, it is conveyed by a conveyor roller to the knurling roller and driven roller of the knurling machine. The output motor drives the knurling roller to rotate, leaving knurling patterns on the surface of the plastic sheet, thus increasing the product's aesthetics, anti-slip properties, or recognizability. However, during the transport of the plastic sheet from the roll forming machine to the knurling machine, the plastic sheet comes into contact with outside air, causing it to cool and its hardness to increase significantly, which will affect the subsequent knurling effect. Utility Model Content

[0004] The purpose of this invention is to provide a heating device for knurling plastic sheets, which solves the problem that the knurling effect is affected after the plastic parts are cooled, and improves the knurling effect of the plastic sheets.

[0005] To achieve the above objectives, the utility model employs the following technical solution:

[0006] A preheating device for knurling plastic sheets includes a heating mechanism disposed between a knurling machine and a roll forming machine. A fixed frame is provided between the knurling machine and the roll forming machine. A plurality of conveying rollers are rotatably connected to the fixed frame. A movable plate is slidably connected to the fixed frame along the vertical direction. Heating units are provided on both the movable plate and the fixed frame. A guide rod is provided on the movable plate and slidably connected to the fixed frame. A drive wheel is provided on the movable plate to drive the guide rod to slide on the fixed frame.

[0007] Furthermore, a rack is provided on one side of the guide rod, and a rotating shaft is rotatably connected to the fixed frame. A gear that meshes with the rack is keyed to the rotating shaft, and the drive wheel drives the rotating shaft to rotate on the fixed frame.

[0008] Furthermore, a driven wheel is keyed to the rotating shaft, and the driven wheel is provided with several slots. A lever is provided on the upper and lower sides of the drive wheel, and the lever contacts the slot and drives the rotating shaft to rotate on the fixed frame.

[0009] Furthermore, a limiting groove is provided between two adjacent grooves, and arc-shaped blocks are provided on the left and right sides of the driven wheel respectively. The arc-shaped blocks contact the limiting groove and restrict the rotation of the shaft on the fixed frame.

[0010] Furthermore, a drive motor is provided on the fixed frame, and the movable end of the drive motor is connected to the drive wheel.

[0011] Furthermore, there are multiple guide rods.

[0012] Furthermore, a guide groove is provided on the other side of the guide rod, and several rollers that contact the guide groove are rotatably connected to the fixed frame.

[0013] Furthermore, the fixed frame is equipped with a heat-insulating curtain, which encloses the two heating units.

[0014] Furthermore, the heating unit includes a base and a fixing plate disposed on the base, wherein a plurality of heating tubes are alternately arranged on the fixing plate.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] 1. After the plastic sheet is roll-formed, several conveyor rollers rotate on the fixed frame, continuously contacting the roll-formed plastic sheet and generating a forward thrust. This drives the plastic sheet to move on the fixed frame, transporting it to the heating mechanism located between the knurling machine and the roll forming machine. The upper and lower sides of the plastic sheet are reheated by the heating units on the movable plate and the fixed frame, causing the upper and lower surfaces of the plastic sheet to melt again. This significantly reduces the hardness of the upper and lower sides of the plastic sheet and improves the subsequent knurling effect.

[0017] 2. The guide rod is slidably connected to the fixed frame, which guides the sliding of the movable plate on the fixed frame. This facilitates the subsequent adjustment of the position of the heating unit, ensuring that the heating unit heats the plastic plate evenly and improves the heating effect on the plastic plate, thereby further improving the knurling effect on the plastic plate.

[0018] 3. When the thickness of the plastic sheet changes, the drive wheel drives the guide rod to slide on the fixed frame, which in turn drives the movable plate and the heating unit on it to slide on the fixed frame together. This adjusts the position of the heating unit on the movable plate to adapt to the change in the thickness of the plastic sheet, ensuring that the heating of plastic sheets of different thicknesses is consistent, and further improving the subsequent knurling effect on the plastic sheet. Attached Figure Description

[0019] Appendix Figure 1 This is a schematic diagram of the structure of the thermal insulation curtain of this utility model.

[0020] Appendix Figure 2 This is a schematic diagram of the heating unit of this utility model.

[0021] Appendix Figure 3This is a schematic diagram of the drive wheel of this utility model.

[0022] Appendix Figure 4 This is a schematic diagram of the heating tube of this utility model.

[0023] The labels shown in the attached diagram:

[0024] 1. Knurling machine; 2. Roll forming machine; 3. Fixed frame; 4. Conveyor roller; 5. Movable plate; 6. Heating unit; 7. Guide rod; 8. Drive wheel; 9. Rack; 10. Rotating shaft; 11. Gear; 12. Driven wheel; 13. Gear groove; 14. Gear lever; 15. Limiting groove; 16. Arc block; 17. Drive motor; 18. Guide groove; 19. Roller; 20. Insulation curtain; 21. Base; 23. Fixed plate; 24. Heating tube. Detailed Implementation

[0025] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the present invention, and these equivalent forms also fall within the scope defined in this application.

[0026] This utility model provides a heating device for pre-knurling of plastic sheets, such as... Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the system includes a heating mechanism positioned between a knurling machine 1 and a roll forming machine 2. A fixed frame 3 is provided between the knurling machine 1 and the roll forming machine 2. Several conveying rollers 4 are rotatably connected to the fixed frame 3. The conveying rollers 4 rotate on the fixed frame 3, continuously contacting the roll-formed plastic sheet and generating a forward thrust. This propels the plastic sheet along the fixed frame 3, transporting it to the heating mechanism between the knurling machine 1 and the roll forming machine 2. The heating mechanism reheats the plastic sheet, causing the upper and lower surfaces to melt again, significantly reducing the hardness of the upper and lower surfaces of the plastic sheet. To improve the subsequent knurling effect on the plastic sheet; a movable plate 5 is slidably connected to the fixed frame 3 along the vertical direction. Both the movable plate 5 and the fixed frame 3 are equipped with heating units 6. The movable plate 5 is equipped with a guide rod 7 that is slidably connected to the fixed frame 3. The movable plate 5 is also equipped with a drive wheel 8 that drives the guide rod 7 to slide on the fixed frame 3. The guide rod 7 is slidably connected to the fixed frame 3, which guides the movable plate 5 to slide on the fixed frame 3, making it easier to adjust the position of the heating unit 6 in the future. This ensures that the heating unit 6 heats the plastic sheet evenly, improving the heating effect on the plastic sheet and further improving the subsequent knurling effect on the plastic sheet.

[0027] When the thickness of the plastic sheet changes, the drive wheel 8 drives the guide rod 7 to slide on the fixed frame 3, which in turn drives the movable plate 5 and the heating unit 6 on it to slide on the fixed frame 3 together. This adjusts the position of the heating unit 6 on the movable plate 5 to adapt to the change in the thickness of the plastic sheet, ensuring that the heating of plastic sheets of different thicknesses is consistent, and further improving the subsequent knurling effect on the plastic sheet.

[0028] Preferred, such as Figure 2 , Figure 3 and Figure 4 As shown, a rack 9 is provided on one side of the guide rod 7, and a rotating shaft 10 is rotatably connected to the fixed frame 3. A gear 11 that meshes with the rack 9 is keyed to the rotating shaft 10. The drive wheel 8 drives the rotating shaft 10 to rotate on the fixed frame 3. Since the rotating shaft 10 is keyed to the gear 11, the gear 11 is driven to rotate on the movable bracket. Since the gear 11 meshes with the rack 9 provided on one side of the guide rod 7, the guide rod 7 is driven to slide on the fixed frame 3, thereby adjusting the position of the heating unit 6 located on the movable plate 5 to adapt to the thickness change of the plastic sheet, ensuring that the heating of plastic sheets of different thicknesses is consistent, and further improving the subsequent knurling effect of the plastic sheet.

[0029] Preferred, such as Figure 3 As shown, a driven wheel 12 is keyed to the rotating shaft 10. The driven wheel 12 is provided with several grooves 13. The upper and lower sides of the drive wheel 8 are respectively provided with levers 14. The levers 14 contact the grooves 13 and drive the rotating shaft 10 to rotate on the fixed frame 3, thereby adjusting the position of the heating unit 6 located on the movable plate 5 to adapt to the thickness change of the plastic sheet, ensuring that the heating of plastic sheets of different thicknesses is consistent, and further improving the subsequent knurling effect of the plastic sheet.

[0030] Preferred, such as Figure 3 As shown, a limiting groove 15 is provided between two adjacent grooves 13. Arc-shaped blocks 16 are provided on the left and right sides of the driven wheel 12. The arc-shaped blocks 16 contact the limiting groove 15 and restrict the rotation of the shaft 10 on the fixed frame 3. This prevents external forces from unintentionally driving the shaft 10 to rotate on the movable support, changing the position of the heating unit 6 on the movable plate 5. This would prevent the upper heating unit 6 from being too close or too far from the plastic plate, ensuring that the upper heating unit 6 can fully heat the plastic plate afterward, improving the knurling effect on the plastic plate. At the same time, it prevents the upper heating unit 6 from interfering with the plastic plate due to being too close, thereby improving the service life of the heating unit 6.

[0031] Preferred, such as Figure 3As shown, the fixed frame 3 is equipped with a drive motor 17, and the movable end of the drive motor 17 is connected to the drive wheel 8, providing a power source for adjusting the position of the upper heating unit 6.

[0032] Preferred, such as Figure 4 As shown, there are multiple guide rods 7, which further improve the overall stability and allow the heating unit 6 to fully heat the plastic sheet, thereby further improving the knurling effect on the plastic sheet.

[0033] Preferred, such as Figure 2 and Figure 3 As shown, a guide groove 18 is provided on the other side of the guide rod 7. Several rollers 19 that contact the guide groove 18 are rotatably connected to the fixed frame 3, which reduces the friction between the guide rod 7 and the support of the fixed frame 3, allowing the guide rod 7 to slide smoothly on the movable support, further improving the overall stability, and allowing the heating unit 6 to fully heat the plastic sheet, further improving the subsequent knurling effect on the plastic sheet.

[0034] Preferred, such as Figure 1 and Figure 2 As shown, the fixed frame 3 is equipped with a heat insulation curtain 20. Specifically, the heat insulation curtain 20 is made of a flexible transparent material, which allows the plastic sheet to pass through smoothly and facilitates observation of the heating status of the plastic sheet. The heat insulation curtain 20 encloses the two heating units 6, preventing the heated plastic sheet from coming into contact with cold air again, which would cause it to cool and harden, further improving the subsequent knurling effect on the plastic sheet. At the same time, it isolates the outside cold air from entering, improving the efficiency of the heating unit 6 in heating the plastic sheet.

[0035] Preferred, such as Figure 2 As shown, the heating unit 6 includes a base 21 and a fixing plate 22 disposed on the base 21. A plurality of heating tubes 23 are alternately disposed on the fixing plate 22. Heat is emitted through the heating tubes 23 to heat the plastic sheet, thereby improving the subsequent knurling effect on the plastic sheet. In addition, by adjusting the position and number of the heating tubes 23, the plastic sheet is ensured to be heated to the required stability, further improving the subsequent knurling effect on the plastic sheet.

[0036] Example 1

[0037] This utility model provides a heating device for knurling plastic sheets, as shown in the figure. Figure 4As shown, after the plastic sheet is roll-formed, several conveying rollers 4 rotate on the fixed frame 3, making them continuously contact the roll-formed plastic sheet and generate a forward thrust, which drives the plastic sheet to move on the fixed frame 3. Thus, the roll-formed plastic sheet is transported to the heating mechanism provided between the knurling machine 1 and the roll forming machine 2. The upper and lower sides of the plastic sheet are reheated by the movable plate 5 and the heating unit 6 provided on the fixed frame 3, respectively, so that the upper and lower surfaces of the plastic sheet melt again, greatly reducing the hardness of the upper and lower sides of the plastic sheet and improving the subsequent knurling effect on the plastic sheet.

[0038] In addition, the guide rod 7 is slidably connected to the fixed frame 3, which guides the sliding of the movable plate 5 on the fixed frame 3, making it easier to adjust the position of the heating unit 6 in the future, so that the heating unit 6 can heat the plastic plate evenly, improve the heating effect on the plastic plate, and further improve the knurling effect on the plastic plate in the future.

[0039] When the thickness of the plastic sheet changes, the drive wheel 8 drives the guide rod 7 to slide on the fixed frame 3, which in turn drives the movable plate 5 and the heating unit 6 on it to slide on the fixed frame 3 together. This adjusts the position of the heating unit 6 on the movable plate 5 to adapt to the change in the thickness of the plastic sheet, ensuring that the heating of plastic sheets of different thicknesses is consistent, and further improving the subsequent knurling effect on the plastic sheet.

[0040] Example 2

[0041] Based on Example 1, such as Figure 3 and Figure 4 As shown, the drive motor 17 drives the drive wheel 8 to rotate, causing one of the limiting blocks to slide out of the limiting groove 15. Then, one of the levers 14 contacts the corresponding lever 13, and the resulting force drives the rotating shaft 10 to rotate on the fixed frame 3. Since the rotating shaft 10 is keyed to the gear 11, it drives the gear 11 to rotate on the movable bracket. Since the gear 11 meshes with the rack 9 on one side of the guide rod 7, it drives the guide rod 7 to slide on the fixed frame 3, thereby adjusting the position of the heating unit 6 located on the movable plate 5 to adapt to the thickness change of the plastic plate, ensuring that the heating of plastic plates of different thicknesses is consistent, and further improving the subsequent knurling effect of the plastic plate.

[0042] After each rotation of the shaft 10, another arc-shaped block 16 comes into contact with the corresponding limiting groove 15. The resistance generated by the two restricts the rotation of the shaft 10 on the fixed frame 3, preventing external forces from unintentionally driving the shaft 10 to rotate on the movable support and changing the position of the heating unit 6 on the movable plate 5. This would prevent the upper heating unit 6 from being too close or too far from the plastic plate, ensuring that the upper heating unit 6 can fully heat the plastic plate afterward, improving the knurling effect on the plastic plate. At the same time, it prevents the upper heating unit 6 from getting too close to the plastic plate and interfering with it, thereby improving the service life of the heating unit 6.

[0043] Example 3

[0044] Based on Example 2, such as Figure 2 and Figure 4 As shown, there are multiple guide rods 7, which further improve the overall stability and allow the heating unit 6 to fully heat the plastic sheet, thereby further improving the subsequent knurling effect on the plastic sheet;

[0045] By rotating several rollers 19 set on the fixed frame 3, they respectively contact the guide groove 18 provided on one side of the guide rod 7, reducing the friction between the guide rod 7 and the support of the fixed frame 3, so that the guide rod 7 can slide smoothly on the movable support, further improving the overall stability, and allowing the heating unit 6 to fully heat the plastic sheet, further improving the subsequent knurling effect on the plastic sheet.

[0046] Example 4

[0047] Based on Example 1, such as Figure 1 and Figure 2 As shown, heat is emitted through heating tube 23 to heat the plastic sheet, thereby improving the subsequent knurling effect on the plastic sheet. In addition, by adjusting the position and number of heating tubes 23, the plastic sheet is ensured to be heated to the required stability, further improving the subsequent knurling effect on the plastic sheet.

[0048] In addition, the two heating units 6 are wrapped in the heat insulation curtain 20 to prevent the heated plastic sheet from coming into contact with cold air again, which would cause it to cool and harden, further improving the knurling effect on the plastic sheet. At the same time, it isolates the outside cold air from entering, improving the efficiency of the heating unit 6 in heating the plastic sheet.

Claims

1. A preheating device for knurling of plastic sheet, comprising a heating mechanism disposed between a knurling machine (1) and a roll forming machine (2), wherein a fixed frame (3) is provided between the knurling machine (1) and the roll forming machine (2), and a plurality of conveying rollers (4) are rotatably connected to the fixed frame (3), characterized in that: A movable plate (5) is slidably connected to the fixed frame (3) along the vertical direction. Both the movable plate (5) and the fixed frame (3) are equipped with heating units (6). The movable plate (5) is equipped with a guide rod (7) that is slidably connected to the fixed frame (3). The movable plate (5) is equipped with a drive wheel (8) that drives the guide rod (7) to slide on the fixed frame (3).

2. The heating device for knurling plastic sheet according to claim 1, characterized in that: A rack (9) is provided on one side of the guide rod (7), and a rotating shaft (10) is rotatably connected to the fixed frame (3). A gear (11) that meshes with the rack (9) is keyed to the rotating shaft (10), and the drive wheel (8) drives the rotating shaft (10) to rotate on the fixed frame (3).

3. The heating device for knurling plastic sheet according to claim 2, characterized in that: A driven wheel (12) is keyed to the shaft (10). The driven wheel (12) has several slots (13). The upper and lower sides of the drive wheel (8) are respectively provided with levers (14). The levers (14) contact the slots (13) and drive the shaft (10) to rotate on the fixed frame (3).

4. The heating device for knurling plastic sheet according to claim 3, characterized in that: A limiting groove (15) is provided between two adjacent grooves (13). Arc blocks (16) are provided on the left and right sides of the driven wheel (12). The arc blocks (16) contact the limiting groove (15) and restrict the rotation of the shaft (10) on the fixed frame (3).

5. The heating device for knurling plastic sheet according to claim 1, characterized in that: The fixed frame (3) is equipped with a drive motor (17), and the movable end of the drive motor (17) is connected to the drive wheel (8).

6. The heating device for knurling plastic sheet according to claim 1, characterized in that: There are multiple guide rods (7).

7. The heating device for knurling plastic sheet according to claim 1, characterized in that: The other side of the guide rod (7) is provided with a guide groove (18), and a number of rollers (19) that are in contact with the guide groove (18) are rotatably connected to the fixed frame (3).

8. The heating device for knurling plastic sheet according to claim 1, characterized in that: The fixed frame (3) is provided with a heat insulation curtain (20), which encloses the two heating units (6).

9. The heating device for knurling plastic sheet according to claim 1, characterized in that: The heating unit (6) includes a base (21) and a fixing plate (22) disposed on the base (21), wherein a plurality of heating tubes (23) are alternately disposed on the fixing plate (22).

Images