PVC wood-plastic board automatic hot-pressing film coating equipment

Abstract

This utility model discloses an automated hot-pressing laminating equipment for PVC wood-plastic composite boards, belonging to the field of wood-plastic composite board processing. The automated hot-pressing laminating equipment for PVC wood-plastic composite boards includes a support frame, a film frame fixed on the support frame, tension rollers and hot-pressing rollers mounted on the support frame via cylinders, a chain conveyor belt fixed inside the support frame, a bonding mechanism on the support frame, a fixing plate on the bonding mechanism, a controller and a mounting box on the fixing plate, multiple sleeves installed inside the mounting box, a pressure-sensitive switch at the top of each sleeve, a sliding rod inside the sleeve, and a limit component on the outside of the sliding rod. This utility model solves the problem that existing hot-pressing laminating devices cannot automatically detect and screen boards with surface defects. By setting an elastic detection structure, this utility model can accurately identify boards with surface defects such as dents, scratches, or unevenness, effectively preventing defective substrates from entering the laminating process.

Description

Technical Field

[0001] This utility model relates to the field of wood-plastic composite board processing, specifically to an automated hot-pressing and laminating equipment for PVC wood-plastic composite boards. Background Technology

[0002] The PVC wood-plastic composite board automated hot-pressing laminating equipment is a highly efficient and intelligent production equipment specifically designed for surface laminating of PVC wood-plastic composite boards. This equipment uses an automated conveying system to precisely feed the substrate and film material into the hot-pressing zone. A high-temperature, high-pressure process ensures a tight bond between the film and the substrate, guaranteeing no bubbles or wrinkles. Equipped with a PLC control system, it can precisely adjust temperature, pressure, and speed, enabling one-button operation. It also features automatic deviation correction, cutting, and material collection functions, significantly improving production efficiency and laminating quality. It is suitable for processing high-end environmentally friendly boards in furniture, decoration, and other fields.

[0003] Existing PVC wood-plastic composite board hot-pressing lamination equipment cannot screen wood-plastic composite boards during use. Due to processing defects in the production process, some wood-plastic composite boards may have problems such as dents, scratches, or unevenness on the surface. These defects will cause the film material to not be fully adhered during the lamination process, resulting in bubbles, curling edges, or partial peeling, which will affect the appearance and service life of the finished product. Due to the lack of automatic detection and sorting functions, unqualified substrates will still enter the hot-pressing process, which will not only reduce the yield rate, but may also increase rework costs. Therefore, traditional equipment has obvious limitations in dealing with defective boards.

[0004] In summary, to improve the quality and production efficiency of PVC wood-plastic composite board products, it is necessary to address the problem that existing hot-pressing lamination equipment cannot automatically detect and screen boards with surface defects. The equipment should be able to accurately identify defects such as dents and scratches before lamination and automatically remove unqualified substrates, thereby reducing the defect rate and lowering production costs. Utility Model Content

[0005] The purpose of this invention is to provide an automated hot-pressing and laminating equipment for PVC wood-plastic composite boards. By setting up an elastic detection structure, it can identify boards with surface defects, ensure the quality of the laminated products, and solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an automated hot-pressing laminating equipment for PVC wood-plastic composite boards, comprising a support frame, a film frame fixed on the support frame, tension rollers and hot-pressing rollers mounted on the support frame via cylinders, a chain conveyor belt fixed inside the support frame, a bonding mechanism on the support frame, a fixing plate on the bonding mechanism, a controller and a mounting box on the fixing plate, multiple sleeves installed inside the mounting box, a pressure-sensitive switch installed at the top of each sleeve, a slide rod inside the sleeve, a limit component on the outside of the slide rod, the slide rod slidingly connected to the sleeve through the limit component, a ball seat fixed at the bottom of the slide rod, a ball bearing rotatably connected inside the ball seat, and a sliding mechanism for cutting the film on the support frame.

[0007] Preferably, the bonding mechanism includes a guide assembly disposed on the bracket and a clamping assembly disposed on the guide assembly. The guide assembly is used to limit the movement of the fixed plate, and the clamping assembly is used to provide downward pressure to the fixed plate.

[0008] Preferably, the guide assembly includes two guide rods slidably connected to the bracket, two guide sleeves fixed to the bracket, and a connecting seat fixed to the bottom of the guide rod. The guide rod passes through the corresponding guide sleeve and is slidably connected to the guide sleeve, and the connecting seat is fixedly connected to the fixing plate.

[0009] Preferably, the clamping assembly includes a first spring sleeved on the outside of the guide rod, one end of the first spring being fixedly connected to the guide sleeve, and the other end of the first spring being fixedly connected to the connecting seat.

[0010] Preferably, the slitting mechanism includes a cutting component and a positioning component mounted on a support, wherein the cutting component is used to cut the film and the positioning component is used to position the sheet material.

[0011] Preferably, the cutting assembly includes a fixed frame fixed on the bracket, a support block mounted on the fixed frame, a drive motor mounted on the fixed frame, two synchronous discs rotatably connected to the fixed frame, a synchronous belt sleeved on the outside of the two synchronous discs, and a blade holder mounted on the synchronous belt. The output end of the drive motor is fixedly connected to one of the synchronous discs, and the drive motor is used to drive the synchronous disc connected to it to rotate. The support block is fixedly connected to the bracket.

[0012] Preferably, the positioning component includes multiple curved arms that are slidably connected to the bracket, a third spring sleeved on the outside of the curved arms, and a roller rotatably connected to the end of the curved arms. The surface of the curved arms is provided with a slot, through which the curved arms are positioned with the bracket, and the top of the third spring is fixedly connected to the bracket.

[0013] Preferably, the limiting assembly includes a limiting ring fixed to the outside of the slide rod and a second spring sleeved on the outside of the slide rod. The limiting ring slides in contact with the inner wall of the sleeve. One end of the second spring is fixedly connected to the mounting box, and the other end of the second spring is fixedly connected to the limiting ring.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] This invention, through the setting of an elastic detection structure, can accurately identify boards with defects such as dents, scratches, or unevenness on the surface, effectively preventing defective substrates from entering the lamination process. This detection method can dynamically adapt to wood-plastic composite boards of different thicknesses, ensuring detection sensitivity and accuracy, thereby significantly reducing problems such as lamination bubbles and edge curling caused by substrate defects. At the same time, the screening function can reduce the error and cost of manual inspection, improve production efficiency, and after qualified boards enter the hot-press lamination, the film layer adheres more tightly, the finished product surface is smooth and flat, significantly improving product yield and aesthetics, meeting the quality requirements of the high-end decoration market, reducing material waste, optimizing production costs, and enhancing the company's market competitiveness. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a three-dimensional structural diagram of the guide sleeve of this utility model;

[0018] Figure 3 This is a three-dimensional structural diagram of the internal structure of the mounting box of this utility model;

[0019] Figure 4 This is a schematic diagram of the three-dimensional structure of the sleeve of this utility model;

[0020] Figure 5 This is a three-dimensional structural diagram of the tool holder of this utility model;

[0021] Figure 6 This is a schematic diagram of the three-dimensional structure of the curved arm of this utility model.

[0022] In the diagram: 1. Support; 2. Membrane holder; 3. Tension roller; 4. Hot press roller; 5. Chain conveyor belt; 61. Guide rod; 62. Guide sleeve; 63. Connecting seat; 64. First spring; 7. Fixing plate; 8. Controller; 9. Mounting box; 10. Sleeve; 11. Pressure-sensitive switch; 12. Slide rod; 13. Ball seat; 14. Ball bearing; 151. Second spring; 152. Limiting ring; 161. Fixing frame; 162. Support block; 163. Drive motor; 164. Synchronous disc; 165. Synchronous belt; 166. Knife holder; 167. Crank arm; 168. Third spring; 169. Roller. Detailed Implementation

[0023] The present invention will be further described below with reference to specific embodiments.

[0024] Refer to the instruction manual appendix Figures 1 to 6An automated hot-pressing laminating equipment for PVC wood-plastic composite boards includes a support frame 1, a film holder 2 fixed on the support frame 1, tension rollers 3 and hot-press rollers 4 mounted on the support frame 1 via cylinders, a chain conveyor belt 5 fixed inside the support frame 1, a bonding mechanism on the support frame 1, a fixing plate 7 on the bonding mechanism, a controller 8 and a mounting box 9 on the fixing plate 7, multiple sleeves 10 installed inside the mounting box 9, a pressure-sensitive switch 11 installed at the top of each sleeve 10, a slide rod 12 installed inside the sleeve 10, a limit component installed on the outside of the slide rod 12, the slide rod 12 is slidably connected to the sleeve 10 through the limit component, a ball seat 13 fixed at the bottom of the slide rod 12, a ball bearing 14 rotatably connected inside the ball seat 13, and a sliding mechanism for cutting the film on the support frame 1.

[0025] It should be noted that the equipment automatically transports the sheet material into the bonding area via the chain conveyor belt 5. The tension roller 3 and the hot press roller 4 driven by the cylinder work together to provide film tension and hot press coating functions. The bonding mechanism pushes the fixed plate 7 to drive the slide rod 12 and the ball bearing 14 to contact the surface of the sheet material. When the ball bearing 14 moves to the defect position on the surface of the sheet material, the bottom of the ball bearing 14 is no longer supported by the sheet material, so the slide rod 12 slides down and no longer squeezes the pressure-sensitive switch 11. The pressure-sensitive switch 11 triggers a signal when the ball bearing 14 encounters a depression. The controller 8 identifies and marks the defective sheet material accordingly, automatically stops the coating process, but keeps the chain conveyor belt 5 running, and sends the unqualified sheet material out of the equipment. After the qualified sheet material is coated by the hot press roller 4, the film is cut by the slitting mechanism, realizing efficient and automated production, avoiding defective products from entering subsequent processes, improving coating quality and product yield. In order to ensure detection accuracy, the structure used to detect defects can be installed in multiple places on the bracket 1 to ensure full coverage of the sheet material surface.

[0026] Refer to the instruction manual appendix Figures 1 to 3 The fitting mechanism includes a guide assembly disposed on the bracket 1 and a clamping assembly disposed on the guide assembly. The guide assembly is used to limit the movement of the fixed plate 7, and the clamping assembly is used to provide downward pressure to the fixed plate 7.

[0027] It should be noted that the function of the bonding mechanism is to ensure that the fixing plate 7 maintains a precise position and stable pressure during movement. The guide component restricts the movement trajectory of the fixing plate 7 to prevent deviation, and the pressing component applies a constant downward pressure to make the film and the board adhere tightly, reduce bubbles and wrinkles, and improve the uniformity and efficiency of the coating.

[0028] Refer to the instruction manual appendix Figures 1 to 3 The guide assembly includes two guide rods 61 slidably connected to the bracket 1, two guide sleeves 62 fixed to the bracket 1, and a connecting seat 63 fixed to the bottom of the guide rod 61. The guide rod 61 passes through the corresponding guide sleeve 62 and is slidably connected to the guide sleeve 62. The connecting seat 63 is fixedly connected to the fixing plate 7.

[0029] It should be noted that the guide rod 61 and the guide sleeve 62 can provide linear guidance in the vertical direction, ensuring that the fixing plate 7 slides smoothly in the guide sleeve 62 through the guide rod 61, realizing limited movement and increasing the stability and accuracy of the bonding process.

[0030] Refer to the instruction manual appendix Figures 1 to 4 The clamping assembly includes a first spring 64 sleeved on the outside of the guide rod 61. One end of the first spring 64 is fixedly connected to the guide sleeve 62, and the other end of the first spring 64 is fixedly connected to the connecting seat 63.

[0031] It should be noted that the first spring 64 can provide elastic downward pressure, so that the ball 14 maintains a constant contact force when it is in contact, thus ensuring detection accuracy.

[0032] Refer to the instruction manual appendix Figure 1 , Figure 5 and Figure 6 The slitting mechanism includes a cutting component and a positioning component mounted on the support 1. The cutting component is used to cut the film, and the positioning component is used to position the sheet material.

[0033] It should be noted that the function of the slitting mechanism is to work together to cut the film and position the board. The cutting component precisely divides the film after lamination, and the positioning component fixes the position of the board material to ensure cutting accuracy, improve the edge quality of the finished product and production efficiency.

[0034] Refer to the instruction manual appendix Figure 1 , Figure 5 and Figure 6 The cutting assembly includes a fixed frame 161 fixed on the bracket 1, a support block 162 mounted on the fixed frame 161, a drive motor 163 mounted on the fixed frame 161, two synchronous discs 164 rotatably connected to the fixed frame 161, a synchronous belt 165 sleeved on the outside of the two synchronous discs 164, and a blade holder 166 mounted on the synchronous belt 165. The output end of the drive motor 163 is fixedly connected to one of the synchronous discs 164, and the drive motor 163 is used to drive the synchronous disc 164 connected to it to rotate. The support block 162 is fixedly connected to the bracket 1.

[0035] It should be noted that the synchronous disk 164 is rotated by the drive motor 163, which drives the synchronous belt 165 to move the cutter holder 166, thereby realizing high-speed linear cutting of the film, ensuring that the cut is flat and burr-free. The support block 162 provides stable support, improving cutting efficiency and accuracy.

[0036] Refer to the instruction manual appendix Figure 1 and Figure 6The positioning assembly includes multiple curved arms 167 that are slidably connected to the bracket 1, a third spring 168 sleeved on the outside of the curved arms 167, and a roller 169 rotatably connected to the end of the curved arms 167. The surface of the curved arms 167 is provided with a slot, and the curved arms 167 are positioned with the bracket 1 through the slot. The top end of the third spring 168 is fixedly connected to the bracket 1.

[0037] It should be noted that the third spring 168 provides buffering force through the contact of the curved arm 167 and roller 169 with the surface of the board, and the slot assists in limiting the sliding, so as to ensure that the board remains stable during the conveying and cutting process, prevent deviation, and improve the cutting consistency and product quality after lamination.

[0038] Refer to the instruction manual appendix Figures 2 to 4 The limiting assembly includes a limiting ring 152 fixed to the outside of the slide rod 12 and a second spring 151 sleeved on the outside of the slide rod 12. The limiting ring 152 slides against the inner wall of the sleeve 10. One end of the second spring 151 is fixedly connected to the mounting box 9, and the other end of the second spring 151 is fixedly connected to the limiting ring 152.

[0039] It should be noted that the limit ring 152 controls the sliding stroke of the slide bar 12 within the sleeve 10. During normal testing, the second spring 151 will remain contracted due to the upward movement of the slide bar 12, ensuring that the ball 14 makes stable contact with the surface of the plate, thereby improving the sensitivity and consistency of defect detection. When the ball 14 moves to the defect position, the second spring 151 will release its elastic potential energy, pushing the slide bar 12 to the pressure-sensitive switch 11.

[0040] Working principle: After the chain conveyor belt 5 feeds the PVC wood-plastic board into the inspection station, the slide bar 12 below the fixed plate 7 drives the ball bearings 14 at the bottom of the ball seat 13 to contact the surface of the board. If the board has a dent defect, the ball bearings 14 lose support and sink. The second spring 151 releases its elastic potential energy to push the limit ring 152 down, and the slide bar 12 slides down accordingly, causing the pressure-sensitive switch 11 to disconnect the signal. The controller 8 immediately stops the cylinder's action on the hot press roller 4 and tension roller 3 (keeping the hot press roller 4 in a raised state), while maintaining the chain conveyor belt 5's movement. Defective boards are directly sent out of the equipment, while qualified boards are conveyed to the hot pressing station. The cylinder drives the tension roller 3 to flatten the film, and the hot pressing roller 4 applies high temperature pressure to complete the film coating. Finally, the drive motor 163 drives the synchronous disk 164 to rotate, driving the blade on the synchronous belt 165 to cut the film laterally. At the same time, the roller 169 at the end of the curved arm 167 presses the edge of the board under the action of the third spring 168 to ensure cutting accuracy. The whole process is coordinated by the controller 8 to realize the automatic screening, film coating and slitting integration.

[0041] It should be noted that the control method of this utility model is controlled by a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the art. Therefore, this utility model will not explain the control method and circuit connection in detail. In this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0042] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A PVC wood-plastic plate automatic hot-pressing film coating equipment, comprising a support (1), characterized in that, A film frame (2) is fixed on the support (1). Tension rollers (3) and hot press rollers (4) are installed on the support (1) via cylinders. A chain conveyor belt (5) is fixed inside the support (1). A bonding mechanism is provided on the support (1). A fixing plate (7) is provided on the bonding mechanism. A controller (8) and a mounting box (9) are provided on the fixing plate (7). Multiple sleeves (10) are installed inside the mounting box (9). A pressure-sensitive switch (11) is provided at the top of the inside of each sleeve (10). A slide rod (12) is provided inside the sleeve (10). A limit component is provided on the outside of the slide rod (12). The slide rod (12) is slidably connected to the sleeve (10) through the limit component. A ball seat (13) is fixed at the bottom of the slide rod (12). A ball ball (14) is rotatably connected inside the ball seat (13). A slitting mechanism for cutting film is provided on the support (1).

2. The automated hot-pressing and laminating equipment for PVC wood-plastic composite boards according to claim 1, characterized in that, The bonding mechanism includes a guide assembly disposed on the bracket (1) and a clamping assembly disposed on the guide assembly. The guide assembly is used to limit the movement of the fixed plate (7), and the clamping assembly is used to provide downward pressure to the fixed plate (7).

3. The automated hot-pressing and laminating equipment for PVC wood-plastic composite boards according to claim 2, characterized in that, The guide assembly includes two guide rods (61) slidably connected to the bracket (1), two guide sleeves (62) fixed to the bracket (1), and a connecting seat (63) fixed to the bottom of the guide rods (61). The guide rods (61) pass through the corresponding guide sleeves (62) and are slidably connected to the guide sleeves (62). The connecting seat (63) is fixedly connected to the fixing plate (7).

4. The automated hot-pressing and laminating equipment for PVC wood-plastic composite boards according to claim 3, characterized in that, The clamping assembly includes a first spring (64) sleeved on the outside of the guide rod (61), one end of the first spring (64) being fixedly connected to the guide sleeve (62), and the other end of the first spring (64) being fixedly connected to the connecting seat (63).

5. The automated hot-pressing and laminating equipment for PVC wood-plastic composite boards according to claim 1, characterized in that, The slitting mechanism includes a cutting component and a positioning component mounted on a support (1). The cutting component is used to cut the film, and the positioning component is used to position the sheet material.

6. The automated hot-pressing and laminating equipment for PVC wood-plastic composite boards according to claim 5, characterized in that, The cutting assembly includes a fixed frame (161) fixed on the bracket (1), a support block (162) mounted on the fixed frame (161), a drive motor (163) mounted on the fixed frame (161), two synchronous discs (164) rotatably connected to the fixed frame (161), a synchronous belt (165) sleeved on the outside of the two synchronous discs (164), and a cutter holder (166) mounted on the synchronous belt (165). The output end of the drive motor (163) is fixedly connected to one of the synchronous discs (164), and the drive motor (163) is used to drive the synchronous disc (164) connected to it to rotate. The support block (162) is fixedly connected to the bracket (1).

7. The automated hot-pressing and laminating equipment for PVC wood-plastic composite boards according to claim 5, characterized in that, The positioning assembly includes multiple curved arms (167) that are slidably connected to the bracket (1), a third spring (168) sleeved on the outside of the curved arms (167), and a roller (169) rotatably connected to the end of the curved arms (167). The surface of the curved arms (167) is provided with a slot, and the curved arms (167) are positioned with the bracket (1) through the slot. The top of the third spring (168) is fixedly connected to the bracket (1).

8. The automated hot-pressing and laminating equipment for PVC wood-plastic composite boards according to claim 1, characterized in that, The limiting assembly includes a limiting ring (152) fixed to the outside of the slide rod (12) and a second spring (151) sleeved on the outside of the slide rod (12). The limiting ring (152) slides against the inner wall of the sleeve (10). One end of the second spring (151) is fixedly connected to the mounting box (9), and the other end of the second spring (151) is fixedly connected to the limiting ring (152).

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