A double-station stripping device for stripping a release cloth from a surface of a pultruded plate

Abstract

The application provides a double-station pultruded plate surface release cloth stripping device, and relates to the technical field of plate processing. The device comprises a rack and a plurality of plate processing units arranged on the rack. The plate processing units are independently operated and synchronously linked. The plate processing unit comprises a first conveying roller group, a tearing device, a winding roller group and a second conveying roller group. The first and second conveying roller groups are used for clamping and conveying the plate. The tearing device is used for tearing the release cloth on the surface of the plate. The winding roller group is used for winding the torn release cloth. The device has the advantage of improving the release cloth stripping efficiency.

Description

Technical Field

[0001] This invention relates to the field of sheet metal processing technology, and more specifically, to a dual-station pultruded sheet surface release cloth peeling device. Background Technology

[0002] In the production process of fiber-reinforced composite pultruded profiles, the surface of the pultruded sheet is typically covered with a release cloth to prevent the sheet from sticking to the mold during high-temperature curing. After the sheet is formed, the release cloth must be removed before subsequent processing or direct use. Currently, the devices used to remove the release cloth from the surface of pultruded sheets generally adopt a single-station structure, that is, there is only one sheet inlet and one sheet outlet, corresponding to a set of release cloth removal and winding components, and only one sheet can be processed at a time. The auxiliary tooling, guide rollers, and winding rollers of such devices are all only adapted to a single sheet conveying path.

[0003] However, a single-station device can only remove the release cloth from one sheet at a time, which cannot meet the needs of continuous batch production. In large-scale pultrusion sheet processing scenarios, this single-station structure often becomes the "bottleneck" of the entire production line, resulting in ineffective capacity release and severely impacting delivery cycles. To increase capacity, the only solution is to add multiple single-station devices. This not only means significantly higher equipment procurement, installation, and maintenance costs, but also requires occupying more production space. Summary of the Invention

[0004] The purpose of this invention is to provide a dual-station pultruded sheet surface release cloth peeling device, which can improve the release cloth peeling efficiency.

[0005] This invention is achieved through the following technical solution: A dual-station pultruded sheet surface release cloth peeling device includes a frame and sheet processing units arranged on the frame. Multiple sheet processing units are provided, and the multiple sheet processing units operate independently and are synchronously linked. The frame is provided with a first conveying roller group, a second conveying roller group and a tearing device. The multiple sheet processing units share the first conveying roller group, the second conveying roller group and the tearing device. The sheet material processing unit includes a take-up roller group, a first conveying roller group and a second conveying roller group for clamping and conveying the sheet material, a tearing device for tearing off the release cloth on the surface of the sheet material, and a take-up roller group for winding up the torn release cloth.

[0006] Optionally, the tearing device includes a fixed plate, a fixed clamping plate, and a movable clamping plate. The fixed plate is fixedly mounted on the frame. The fixed clamping plate and the movable clamping plate are both located below the fixed plate, and the movable clamping plate is located above the fixed clamping plate. The fixed clamping plate is fixedly mounted on the fixed plate, and the movable clamping plate is movably mounted on the fixed clamping plate. The sheet metal is clamped between the fixed clamping plate and the movable clamping plate. Both the fixed clamping plate and the movable clamping plate are formed by bending metal plates along the center line. Guide slopes are provided at both ends of the fixed clamping plate and the movable clamping plate. The tearing device also includes an adjusting component, which is used to adjust the gap between the fixed clamping plate and the movable clamping plate to clamp the sheet metal.

[0007] Optionally, the fixed plate has a connecting hole, and the adjusting component includes a connecting bolt that is set on the fixed plate through the connecting hole. Both the fixed clamping plate and the movable clamping plate are mounted on the fixed plate by the connecting bolt. Both the fixed clamping plate and the movable clamping plate have mounting holes for the connecting bolt to pass through. The adjusting component also includes an end nut and an adjusting nut. Both the end nut and the adjusting nut are threaded onto the connecting bolt. The end nut is used to support the fixed clamping plate, and the adjusting nut is located above the movable clamping plate. When the adjusting nut rotates, it presses down on the movable clamping plate, so that the plate is pressed against the fixed clamping plate.

[0008] Optionally, a spring is fitted onto the connecting bolt, and the spring is located between the fixed clamping plate and the movable clamping plate to support the movable clamping plate.

[0009] Optionally, the bending angle α of the fixed clamp and the movable clamp is 40° to 50°, and the end chamfer β of the fixed clamp and the movable clamp is 40° to 50°.

[0010] Optionally, the take-up roller assembly includes a take-up roller and a guide roller mounted on the frame. After the release cloth on the surface of the sheet is demolded by the movable clamp and the fixed clamp, the release cloth is wound onto the take-up roller after passing through the guide roller. The release cloth forms a 45° peel angle with the surface of the sheet after passing through the guide roller.

[0011] Optionally, both the fixed clamp and the movable clamp are provided with elongated notches. The elongated notches are formed on the flat surfaces of the fixed clamp and the movable clamp. Both the fixed clamp and the movable clamp are provided with multiple pressing wheels through the elongated notches. Each plate corresponds to two pressing wheels. The pressing wheels are slidably disposed within the elongated notches. The pressing wheels slide along the length direction of the elongated notches. The fixed clamp and the movable clamp are provided with fasteners for fixing the pressing wheels.

[0012] Optionally, the fixed clamp and the movable clamp are rotatably provided with an installation shaft through an elongated notch. The length direction and rotation axis of the installation shaft are both parallel to the length direction of the elongated notch. The pressing wheel slides through the installation shaft. The pressing wheel includes two coaxially arranged discs. The diameter of the inner disc is smaller than that of the outer disc. The inner disc is used to press the upper and lower end edges of the plate. The inner wall of the outer disc is used to abut against the end face of the plate. The fixing member includes a fixing bolt threaded to the peripheral wall of the outer disc. The end of the fixing bolt is used to press the installation shaft to fix the pressing wheel on the installation shaft. The peripheral wall of the outer disc has a countersunk groove, and the end of the fixing bolt is located in the countersunk groove.

[0013] Optionally, both the fixed clamping plate and the movable clamping plate are provided with extension plates at their ends. The extension plates are used to press down the sheet material to be torn. The ends of the extension plates and the fixed clamping plates and the movable clamping plates are provided with supporting inclined surfaces that are complementary to the guide inclined surfaces. A tearing gap is left between the guide inclined surfaces and the supporting inclined surfaces for the release cloth to tear.

[0014] Optionally, the bottom of the extension plate is provided with an installation groove, the length direction of the installation groove is parallel to the length direction of the extension plate, and a rotating roller is rotatably provided on the bottom of the extension plate through the installation groove, the rotating roller pressing against the plate.

[0015] The technical solution of the present invention has at least the following advantages and beneficial effects: 1. By setting multiple sheet material processing units on the frame, and having these units operate independently yet synchronously, simultaneous processing of multiple sheets of sheet material is achieved. Each sheet material processing unit is equipped with an independent first conveyor roller group, a tearing device, a winding roller group, and a second conveyor roller group. Each unit can independently adjust process parameters such as conveying speed and clamping force according to the width of the sheet material and the degree of adhesion of the release cloth, without interfering with each other, and can adapt to the differentiated processing needs of different batches of sheet material. Parallel processing: Multiple sheet material processing units work simultaneously, and the release cloth can be peeled off from multiple sheets of sheet material in a single operation, thus multiplying the processing capacity per unit time. Without increasing the complexity of a single machine, the release cloth peeling efficiency is increased to several times that of the original single-station device. At the same time, compared to purchasing multiple single-station machines, only one frame and shared auxiliary structures are required, significantly reducing equipment investment costs and production site occupancy.

[0016] 2. The elastic clamping and adjustable bending guide gap tearing device design enables stable clamping of plates of different thicknesses and continuous and complete peeling of the release cloth, avoiding problems such as breakage of the release cloth, residue, or damage to the plate during the peeling process.

[0017] 3. The structural design of sliding positioning of the pressing wheel, composite pressing of inner and outer discs, and bolt locking enables quick adjustment of the pressing wheel position to adapt to plates of different widths, and simultaneously achieves bidirectional limiting of the plate thickness and width, significantly improving the versatility and positioning accuracy of the device.

[0018] 4. By using an extension plate for support and a rotating roller for pressing, the release cloth peeling starting area provides additional support and clamping force to the board, effectively resisting the warping of the board front end caused by tearing force, ensuring the smooth progress of the peeling process, and improving the peeling quality. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of a dual-station pultruded sheet surface release cloth peeling device according to the present invention; Figure 2 This is a side view of a dual-station pultruded sheet surface release cloth peeling device according to the present invention; Figure 3 This is a schematic diagram of the tearing device in a dual-station pultruded sheet surface release cloth peeling device of the present invention; Figure 4 This is a schematic diagram of the pressing roller in a dual-station pultruded sheet surface release cloth peeling device of the present invention; Figure 5 This is a schematic diagram of the structure of the fixed clamping plate in the surface demolding cloth peeling device for dual-station pultruded sheet of the present invention; Figure 6 This is a cross-sectional view of the fixing clamp in a dual-station pultruded sheet surface release cloth peeling device of the present invention; Figure 7 for Figure 6 An enlarged schematic diagram of part A in the middle.

[0020] Figure label: 1. Rack; 2. Tear-off device; 21. Fixing plate; 22. Fixing clamp; 23. Movable clamp; 24. Connecting bolt; 25. End nut; 26. Adjusting nut; 27. Spring; 28. Take-up roller; 29. ​​Guide roller; 210. Take-up motor; 3. First conveyor roller group; 4. Second conveyor roller group; 5. Drive motor; 6. Sheet material; 7. Release cloth; 8. Connecting hole; 9. Mounting hole; 10. Guide slope; 11. Long strip notch; 12. Pressing roller; 121. Disc; 13. Mounting shaft; 14. Fixing bolt; 15. Countersunk groove; 16. Extension plate; 17. Support slope; 18. Mounting groove; 19. Rotating roller; 20. Bending angle; 211. End chamfer. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0023] The following is for reference Figures 1-7 As shown in the illustration, and further explained with reference to specific embodiments, this embodiment provides a dual-station pultruded sheet surface release cloth peeling device, referring to... Figure 1 The system includes a frame 1 and a sheet metal processing unit mounted on the frame 1. Multiple sheet metal processing units are provided, and the multiple sheet metal processing units operate independently and are linked synchronously. The frame 1 is provided with a first conveying roller group 3, a second conveying roller group 4, and a tearing device 2. Multiple sheet metal processing units share the first conveying roller group 3, the second conveying roller group 4, and the tearing device 2. Reference Figure 1 and Figure 2 The sheet material processing unit includes a take-up roller group, a first conveying roller group 3 and a second conveying roller group 4 for clamping and conveying the sheet material 6, a tearing device 2 for tearing off the release cloth 7 on the surface of the sheet material 6, and a take-up roller group for winding up the torn release cloth 7.

[0024] During the demolding operation of sheet 6, sheet 6 is clamped in the first conveying roller group 3 and the second conveying roller group 4, and is conveyed to the tearing device 2 by the first conveying roller group 3 and the second conveying roller group 4. The tearing device 2 tears off the demolding cloth 7 on the surface of sheet 6. The torn demolding cloth 7 is then rolled up on the winding roller 28, thus completing the demolding operation of sheet 6. Multiple sheet processing units work simultaneously, and the demolding cloth 7 of multiple sheets 6 can be peeled off in one go, which multiplies the processing capacity per unit time.

[0025] Reference Figure 1 and Figure 2 In this embodiment of the application, two sheet metal processing units are provided on the frame 1.

[0026] Reference Figure 1 and Figure 2Furthermore, in this embodiment, both the first conveying roller group 3 and the second conveying roller group 4 include two drive rollers, which are located on both sides of the plate 6. Additionally, a drive motor 5 is mounted on the frame 1, and the drive rollers are coaxially mounted on the output shaft of the drive motor 5. After the plate 6 is clamped between the drive rollers, the drive motor 5 is started, causing the drive rollers to rotate. The rotation of the drive rollers drives the plate 6 to move, making the operation simple and convenient. Furthermore, when one or two plates 6 are placed on the frame 1 for tearing operations, the plates 6 are placed on the drive rollers for conveying. The two plates 6 share the drive rollers to achieve synchronous linkage, while the independent tearing device 2 and the winding roller group tear and collect the release cloth 7 on the surface of the plate 6, thus achieving independent operation of the two workstations.

[0027] Reference Figure 2 , Figure 3 and Figure 4 In this embodiment, the tearing device 2 includes a fixed plate 21, a fixed clamping plate 22, and a movable clamping plate 23. The fixed plate 21 is fixedly mounted on the frame 1 by bolts. The fixed clamping plate 22 and the movable clamping plate 23 are both located below the fixed plate 21, and the movable clamping plate 23 is located above the fixed clamping plate 22. The fixed clamping plate 22 is fixedly mounted on the fixed plate 21, and the movable clamping plate 23 is movably mounted on the fixed clamping plate 22. The sheet material 6 is clamped between the fixed clamping plate 22 and the movable clamping plate 23. The fixed clamping plate 22 and the movable clamping plate 23 are both formed by bending metal plates along the center line. Guide slopes 10 are provided at both ends of the fixed clamping plate 22 and the movable clamping plate 23. The tearing device 2 also includes an adjusting member, which is used to adjust the gap between the fixed clamping plate 22 and the movable clamping plate 23 to clamp the sheet material 6. Reference Figure 2 , Figure 3 and Figure 4 The fixed plate 21 has a connecting hole 8. The adjusting component includes a connecting bolt 24 that is set on the fixed plate 21 through the connecting hole 8. The fixed clamping plate 22 and the movable clamping plate 23 are both installed on the fixed plate 21 through the connecting bolt 24. The fixed clamping plate 22 and the movable clamping plate 23 are both provided with mounting holes 9 for the connecting bolt 24 to pass through. The adjusting component also includes an end nut 25 and an adjusting nut 26. The end nut 25 and the adjusting nut 26 are both threadedly connected to the connecting bolt 24. The end nut 25 is used to support the fixed clamping plate 22. The adjusting nut 26 is located above the movable clamping plate 23. When the adjusting nut 26 rotates, it presses down on the movable clamping plate 23, so that the plate 6 is pressed against the fixed clamping plate 22.

[0028] Rotate the adjusting nut 26 according to the thickness of the sheet material 6 to be processed. By changing the position of the adjusting nut 26 on the connecting bolt 24, the clamping gap between the movable clamping plate 23 and the fixed clamping plate 22 is adjusted to ensure that the sheet material 6 can pass smoothly. At the same time, sufficient peeling force is applied to the release cloth 7. When the sheet material 6 passes through the tearing device 2 of the two stations, the two stations respectively clamp and tear off the release cloth 7 on the upper and lower surfaces of the sheet material 6. The guide slope 10 can guide the sheet material 6 entering between the fixed clamping plate 22 and the movable clamping plate 23, avoid the sheet material 6 being scratched and damaged by the sharp corners, and also facilitate the release cloth 7 to enter the gap smoothly and be clamped and fixed.

[0029] Reference Figure 2 , Figure 3 and Figure 4 Furthermore, a spring 27 is fitted on the connecting bolt 24. The spring 27 is located between the fixed clamping plate 22 and the movable clamping plate 23, supporting the movable clamping plate 23. The spring 27 structure can adjust the gap between the film-tearing tool and the plate 6, effectively preventing the plate 6 from being torn or controlling the residue of the release cloth 7 to the greatest extent, thereby reducing scrap costs.

[0030] Reference Figure 5 In this embodiment, the bending angle 20α of the fixed clamping plate 22 and the movable clamping plate 23 is 40° to 50°, and the chamfer 211β at the ends of the fixed clamping plate 22 and the movable clamping plate 23 is 40° to 50°. This angle range design ensures smooth guidance while avoiding jamming of the plate 6 when it enters due to an excessively small angle, and also avoids weakening the guiding and positioning function due to an excessively large angle. Combined with the chamfering treatment, it can further eliminate sharp edges, reduce the risk of the plate 6 being scratched, and improve the stability of the tearing operation. Furthermore, the bending angle 20α of the fixed clamping plate 22 and the movable clamping plate 23 is 45°, and the chamfer 211β at the ends of the fixed clamping plate 22 and the movable clamping plate 23 is 45°. Furthermore, after the movable clamping plate 23 and the fixed clamping plate 22 are installed, a flared guide structure is formed between the movable clamping plate 23 and the fixed clamping plate 22. In conjunction with the 45° chamfer design, it ensures that the sheet 6 passes through smoothly without rubbing against the chamfered part of the tooling and causing damage, thereby further avoiding the risk of tearing the sheet 6 and reducing scrap costs.

[0031] Reference Figure 1 and Figure 2In this embodiment, the take-up roller assembly includes a take-up roller 28 and a guide roller 29 mounted on the frame 1. After the release fabric 7 on the surface of the sheet 6 is demolded by the movable clamping plate 23 and the fixed clamping plate 22, the release fabric 7 passes through the guide roller 29 and is then wound onto the take-up roller 28. The release fabric 7 forms a 45° peel angle with the surface of the sheet 6 after passing through the guide roller 29. Furthermore, a take-up motor 210 is mounted on the frame 1, and the take-up roller 28 is coaxially mounted on the output shaft of the take-up motor 210. After the release fabric 7 is torn off, it passes through the guide roller 29 and is wound onto the take-up roller 28. The take-up motor 210 is started, driving the take-up roller 28 to rotate and thus take up the release fabric 7.

[0032] After passing through the guide roller 29, the release cloth 7 forms a 45° peel angle with the surface of the board 6, effectively reducing the peak peel force and achieving "progressive" peeling. In materials mechanics, the peel angle directly determines the magnitude of the stress component acting on the interface. Mechanical decomposition principle: When the peel angle is 90° (vertically upward), the peel force is almost entirely converted into tensile stress perpendicular to the surface of the board 6. At this point, the required peak peel force is the largest, easily leading to resin tearing or delamination on the surface of the board 6. When set to 45°, the peel force is decomposed into tensile stress perpendicular to the surface and shear stress parallel to the surface. According to vector decomposition, the vertical component is significantly reduced, thereby greatly reducing the peak peel force required to overcome the interfacial adhesion. A smaller peel force means less impact on the surface of the board 6, avoiding surface defects (such as enlarged pinholes and fiber pull-out) caused by forced tearing, and protecting the integrity of the board 6 surface.

[0033] The composite material sheet 6 contains complex internal stresses during the curing process, and the release cloth 7 exerts a certain constraint on the surface. Stress release: If the peel angle is too large, the sudden tensile force will disrupt the stress balance on the surface of sheet 6, easily inducing local warping or microcracks. A 45° peel angle provides a gentle transition range, allowing the release cloth 7 to release the internal stress on the surface of sheet 6 slowly and smoothly, rather than instantaneously, when it detaches from the surface. This effectively prevents uneven elastic recovery of sheet 6 at the moment of detachment, thus ensuring the flatness and dimensional accuracy of the final product.

[0034] Release cloth 7 typically has a porous structure to remove air bubbles and excess resin. At a 90° peel angle, the release cloth 7 experiences the greatest tension, making it prone to breakage due to insufficient strength, thus causing production interruptions. A 45° angle reduces the tensile load on the release cloth 7, allowing it to maintain continuous and stable operation, avoiding efficiency losses and increased scrap rates caused by breakage and downtime.

[0035] Reference Figure 6 and Figure 7In this embodiment, both the fixed clamping plate 22 and the movable clamping plate 23 are provided with elongated notches 11. The elongated notches 11 are provided on the flat surfaces of the fixed clamping plate 22 and the movable clamping plate 23. The length direction of the elongated notches 11 is parallel to the length direction of the fixed clamping plate 22 and the movable clamping plate 23. Both the fixed clamping plate 22 and the movable clamping plate 23 are provided with multiple pressing wheels 12 through the elongated notches 11. Each plate 6 corresponds to two pressing wheels 12. The pressing wheels 12 are slidably disposed in the elongated notches 11 and slide along the length direction of the elongated notches 11. The fixed clamping plate 22 and the movable clamping plate 23 are provided with fasteners for fixing the pressing wheels 12.

[0036] During the surface treatment of sheet 6, the positions of the two pressing rollers 12 within the elongated notch 11 are first adjusted according to the width of sheet 6, so that the two pressing rollers 12 abut against both sides of the sheet 6 in the width direction. After adjustment, the positions of the pressing rollers 12 are locked by the fasteners, which can limit the width direction of sheet 6, prevent the sheet 6 from shifting laterally during the conveying and peeling process, ensure accurate peeling position, and improve the stability of the peeling operation. The pressing rollers 12 can rotate synchronously with the conveying of sheet 6 without hindering the normal feeding of sheet 6. At the same time, they can continuously apply a stable pressing force to the upper and lower edge surfaces of sheet 6. With the clamping of the fixed clamping plate 22 and the movable clamping plate 23, the stability of sheet 6 during the conveying process is further improved.

[0037] Reference Figure 6 and Figure 7 In this embodiment, a mounting shaft 13 is rotatably mounted on the fixed clamping plate 22 and the movable clamping plate 23 through an elongated notch 11. The length direction and rotation axis of the mounting shaft 13 are parallel to the length direction of the elongated notch 11. The pressing wheel 12 slides through the mounting shaft 13. The pressing wheel 12 includes two coaxially arranged discs 121. The diameter of the inner disc 121 is smaller than that of the outer disc 121. The inner disc 121 is used to press the upper and lower end edges of the plate 6. The inner wall of the outer disc 121 is used to abut the end face of the plate 6. The fixing member includes a fixing bolt 14 threadedly connected to the peripheral wall of the outer disc 121. The end of the fixing bolt 14 is used to press the mounting shaft 13 to fix the pressing wheel 12 to the mounting shaft 13. The peripheral wall of the outer disc 121 is provided with a countersunk groove 15. The end of the fixing bolt 14 is located in the countersunk groove 15.

[0038] Reference Figure 6 and Figure 7The inner disc 121 can stably press the edge of the plate 6 from the top and bottom, while the inner wall of the outer disc 121 can form a lateral limit on the end of the plate 6. The double limit further reduces the possibility of plate 6 shifting. Tightening the fixing bolt 14 can quickly adjust and lock the position of the pressing wheel 12 on the mounting shaft 13. The operation is convenient and adaptable to the needs of plates 6 with different widths. The countersunk groove 15 ensures that the head of the fixing bolt 14 does not protrude from the peripheral wall of the outer disc 121, preventing the fixing bolt 14 from scratching the plate 6 or other parts of the device, ensuring smooth operation.

[0039] Reference Figure 6 In this embodiment, both the fixed clamping plate 22 and the movable clamping plate 23 are provided with an extension plate 16 at their ends. The extension plate 16 is used to press down the sheet 6 that is to be torn. The extension plate 16 and the end opposite to the fixed clamping plate 22 and the movable clamping plate 23 are provided with a supporting slope 17 that is complementary to the guide slope 10. A tearing gap is left between the guide slope 10 and the supporting slope 17 for the release cloth 7 to be torn.

[0040] After the fixed clamping plate 22 and the movable clamping plate 23 press the edge of the plate 6, the extension plate 16 can provide pre-support for the plate 6 in the area near the tear position. With the matching structure of the support slope 17 and the guide slope 10, the plate 6 maintains a stable shape at the tear position, avoiding local bending and deformation of the plate 6 due to the pulling of the release cloth 7. This ensures that the surface of the plate 6 is flat during the peeling process. At the same time, the tear gap provides sufficient space for the bending of the release cloth 7, facilitating the peeling operation and reducing the possibility of tear residue of the release cloth 7. In addition, under the action of the extension plate 16, the front side of the tear area is pressed, which avoids the possibility of the release cloth 7 separating from the fixed clamping plate 22 and the movable clamping plate 23 due to the high conveying speed of the plate 6, thereby improving the demolding effect of the release cloth 7.

[0041] Reference Figure 6 In this embodiment of the application, an installation groove 18 is provided at the bottom of the extension plate 16. The length direction of the installation groove 18 is parallel to the length direction of the extension plate 16. A rotating roller 19 is rotatably provided at the bottom of the extension plate 16 through the installation groove 18. The rotating roller 19 is pressed onto the plate 6.

[0042] When the sheet 6 is continuously conveyed forward by the conveying mechanism, the rotating roller 19 can rotate synchronously with the sheet 6, converting the sliding friction between the extension plate 16 and the sheet 6 into rolling friction. This ensures the stable pressing and support effect of the extension plate 16 on the sheet 6, avoids scratching the surface of the sheet 6 by relative friction between the extension plate 16 and the sheet 6, and does not hinder the normal conveying of the sheet 6, ensuring that the conveying and peeling operations are carried out smoothly and synchronously.

[0043] The implementation principle of a dual-station pultruded sheet surface release cloth peeling device according to an embodiment of the present invention is as follows: Two pultruded sheets 6 (usually two pieces) are simultaneously fed into the device. The drive motor 5 is started, driving the drive rollers in the first conveyor roller group 3 and the second conveyor roller group 4 to rotate. The sheet 6 is clamped between the upper and lower drive rollers and is steadily conveyed forward along a predetermined path under the friction of the drive rollers. As the sheet 6 continues to move forward, guided by the flared opening formed by the movable clamping plate 23 and the fixed clamping plate 22, the sheet 6 smoothly enters the clamping gap between the movable clamping plate 23 and the fixed clamping plate 22. The release cloth 7 separated from the surface of the sheet 6 passes upward around the guide roller 29 and is finally wound and fixed on the take-up roller 28. The winding motor 210 is started to drive the winding roller 28 to rotate, applying a continuous and directionally stable tension to the release cloth 7. During the peeling process, the pre-adjusted pressing roller 12 continues to play its role: the inner disc 121 presses the edge of the plate 6 stably from the top and bottom, while the inner wall of the outer disc 121 limits the end of the plate 6 laterally, effectively preventing the plate 6 from shifting laterally or warping up and down when under tension, thus ensuring the accuracy and stability of the peeling position.

[0044] Two sheet material processing units operate synchronously. The first conveyor roller group 3 and the second conveyor roller group 4 provide common conveying power for the two sheets 6, ensuring they move forward at the same speed. Each unit's tearing device 2 and take-up roller group operate independently, adjusting the tension of the take-up roller 28 or the clamping force of the tearing device 2 independently based on the actual adhesion of the release cloth 7 to each sheet 6, without interference. This "synchronous linkage, independent operation" design allows the device to simultaneously peel the release cloth 7 from two sheets 6 in a single operation, doubling the processing efficiency compared to a single-station device.

Claims

1. A dual-station pultruded sheet surface release cloth peeling device, characterized in that, The device includes a frame (1) and a sheet metal processing unit mounted on the frame (1). Multiple sheet metal processing units are provided, and the multiple sheet metal processing units operate independently and are linked synchronously. The frame (1) is provided with a first conveying roller group (3), a second conveying roller group (4), and a tearing device (2). The multiple sheet metal processing units share the first conveying roller group (3), the second conveying roller group (4), and the tearing device (2). The sheet material processing unit includes a take-up roller group, the first conveying roller group (3) and the second conveying roller group (4) are used to clamp and convey the sheet material (6), the tearing device (2) is used to tear off the release cloth (7) on the surface of the sheet material (6), and the take-up roller group is used to take up the tear-off release cloth (7). The tearing device (2) includes a fixed plate (21), a fixed clamping plate (22), and a movable clamping plate (23). The fixed plate (21) is fixedly mounted on the frame (1). The fixed clamping plate (22) and the movable clamping plate (23) are both located below the fixed plate (21). The movable clamping plate (23) is located above the fixed clamping plate (22). The fixed clamping plate (22) is fixedly mounted on the fixed plate (21). The fixed clamping plate (22) and the movable clamping plate (23) are both formed by bending metal plates along the center line. The fixed clamping plate (22) and the movable clamping plate (23) are provided with guide slopes (10) at both ends. The bending angle (20) α of the fixed clamping plate (22) and the movable clamping plate (23) is 40° to 50°. The end chamfer (211) β of the fixed clamping plate (22) and the movable clamping plate (23) is 40° to 50°. Both the fixed clamping plate (22) and the movable clamping plate (23) are provided with elongated notches (11). The elongated notches (11) are opened on the flat surfaces of the fixed clamping plate (22) and the movable clamping plate (23). Both the fixed clamping plate (22) and the movable clamping plate (23) are provided with multiple pressing wheels (12) through the elongated notches (11). Each plate (6) corresponds to two pressing wheels (12). The pressing wheels (12) are slidably disposed in the elongated notches (11). The pressing wheels (12) slide along the length direction of the elongated notches (11). The fixed clamping plate (22) and the movable clamping plate (23) are provided with fasteners for fixing the pressing wheels (12). Both the fixed clamping plate (22) and the movable clamping plate (23) are provided with extension plates (16) at their ends. The extension plates (16) are used to press down the sheet material (6) to be torn. The extension plates (16) and the ends opposite to the fixed clamping plate (22) and the movable clamping plate (23) are provided with supporting slopes (17) that are complementary to the guide slopes (10). A tearing gap is left between the guide slopes (10) and the supporting slopes (17) for the release cloth (7) to tear.

2. The dual-station pultruded sheet surface release cloth peeling device according to claim 1, characterized in that, The movable clamping plate (23) is movably mounted on the fixed clamping plate (22), and the plate (6) is clamped between the fixed clamping plate (22) and the movable clamping plate (23). The tearing device (2) also includes an adjusting member, which is used to adjust the gap between the fixed clamping plate (22) and the movable clamping plate (23) to clamp the plate (6).

3. The dual-station pultruded sheet surface release cloth peeling device according to claim 2, characterized in that, The fixed plate (21) has a connecting hole (8). The adjusting component includes a connecting bolt (24) that is set on the fixed plate (21) through the connecting hole (8). The fixed clamping plate (22) and the movable clamping plate (23) are both installed on the fixed plate (21) through the connecting bolt (24). The fixed clamping plate (22) and the movable clamping plate (23) are both provided with mounting holes (9) for the connecting bolt (24) to pass through. The adjusting component also includes an end nut (25) and an adjusting nut (26). The end nut (25) and the adjusting nut (26) are both threaded onto the connecting bolt (24). The end nut (25) is used to support the fixed clamping plate (22). The adjusting nut (26) is located above the movable clamping plate (23). When the adjusting nut (26) rotates, it presses down on the movable clamping plate (23) so that the plate (6) is pressed against the fixed clamping plate (22).

4. The dual-station pultruded sheet surface release cloth peeling device according to claim 3, characterized in that, A spring (27) is fitted on the connecting bolt (24). The spring (27) is located between the fixed clamping plate (22) and the movable clamping plate (23) and supports the movable clamping plate (23).

5. A dual-station pultruded sheet surface release cloth peeling device according to claim 2, characterized in that, The take-up roller assembly includes a take-up roller (28) and a guide roller (29) mounted on the frame (1). After the release cloth (7) on the surface of the plate (6) is demolded by the movable clamp (23) and the fixed clamp (22), the release cloth (7) is wound onto the take-up roller (28) after passing through the guide roller (29). The release cloth (7) forms a 45° peel angle with the surface of the plate (6) after passing through the guide roller (29).

6. The dual-station pultruded sheet surface release cloth peeling device according to claim 1, characterized in that, The fixed clamping plate (22) and the movable clamping plate (23) are rotatably mounted with an installation shaft (13) through an elongated notch (11). The length direction and rotation axis of the installation shaft (13) are parallel to the length direction of the elongated notch (11). The pressing wheel (12) slides on the installation shaft (13). The pressing wheel (12) includes two coaxially arranged discs (121). The diameter of the inner disc (121) is smaller than that of the outer disc (121). 1) The inner wall of the disc (121) located on the outer side is used to press the upper and lower end edges of the plate (6) and to abut the end face of the plate (6). The fastener includes a fixing bolt (14) threaded to the peripheral wall of the outer disc (121). The end of the fixing bolt (14) is used to press the mounting shaft (13) to fix the pressing wheel (12) on the mounting shaft (13). The peripheral wall of the outer disc (121) is provided with a countersunk groove (15). The end of the fixing bolt (14) is located in the countersunk groove (15).

7. A dual-station pultruded sheet surface release cloth peeling device according to claim 1, characterized in that, The bottom of the extension plate (16) is provided with an installation groove (18), the length direction of the installation groove (18) is parallel to the length direction of the extension plate (16), and a rotating roller (19) is rotatably provided at the bottom of the extension plate (16) through the installation groove (18), and the rotating roller (19) is pressed onto the plate (6).

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