EVA automatic tail-to-head splicing hot melt mechanism

Abstract

The utility model relates to photovoltaic module processing technical field discloses EVA automatic tail head order joint hot melt mechanism, including cutting tool structure and fusion structure, cutting tool structure includes cutting tool and rodless cylinder, and cutting tool installs on the slider of rodless cylinder, fusion structure includes pressing plate and pressing plate cylinder, and pressing plate installs on pressing plate cylinder, and one side of pressing plate sets up heating block, and heating block sets up on mounting panel, and sets up fusion cylinder on mounting panel, and fusion cylinder installs on right angle shape fusion cylinder support, heating block below sets up fusion bottom plate, one side interval of fusion bottom plate sets up baffle, and cutting tool is located between the pinch of fusion bottom plate and baffle, still including by lift cylinder drive lift, rotary cylinder drive rotation and the membrane structure of screw rod drive forward and backward remove. The utility model realizes the automation of glue film fusion, and the structure is compact, and the production line does not need to stop and wait, improves the efficiency of production line.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic module processing technology, specifically to an automatic EVA tail-end sequential hot-melt mechanism. Background Technology

[0002] In the previous production process of encapsulant film for photovoltaic modules, changing materials required manual cutting of leftover material and then manual welding of the new material head to the cut leftover material. This involved many steps and required the production line to be stopped while waiting for the process to complete. This resulted in a long overall process time and reduced production line efficiency. Therefore, our organization aims to improve these shortcomings.

[0003] The relevant reference CN111941515A discloses a welding device for a cutting machine and a cutting machine, which includes a linear drive device, a hot knife and a heating device. The linear drive device is used to connect to the cutting machine, and the hot knife is driven by the linear drive device so that the linear drive device drives the hot knife to move up and down. The welding device for the cutting machine is set at the feeding end of the cutting machine, and the structure is relatively dispersed. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide an automated EVA tail-end sequential hot-melt mechanism that realizes the welding of adhesive films, eliminates the need for production line to stop and wait, improves production line efficiency, and has a compact structure.

[0005] To solve the above technical problems, this utility model provides an automatic EVA tail-end hot-melt mechanism, including a cutting structure and a welding structure; the cutting structure includes a cutter and a rodless cylinder, with the cutter mounted on the slider of the rodless cylinder; the welding structure includes a pressure plate and a pressure plate cylinder, with the pressure plate mounted on the pressure plate cylinder, a heating block on one side of the pressure plate, the heating block being mounted on a mounting plate, and a welding cylinder mounted on the mounting plate, the welding cylinder being mounted on a right-angled welding cylinder bracket; a welding base plate is provided below the heating block; baffles are spaced apart on one side of the welding base plate, and the cutter is located between the gap between the welding base plate and the baffles; it also includes a film lifting structure, which is equipped with a rotary cylinder and a lifting cylinder, and the film lifting structure is connected to a lead screw.

[0006] By adopting the above technical solution, the cutting structure, welding structure and film lifting structure are integrated into one compact structure with a small footprint. The film lifting structure automatically extracts the overlapping film during the connection of new and old films, realizing the automation of film welding. The production line does not need to stop and wait, which enhances the continuity and automation of production, improves the efficiency of the production line, shortens the process time, and increases the overall capacity.

[0007] Preferably, the pressure plate has an inclined surface facing the welding side.

[0008] By adopting the above technical solution, the sloping side of the pressure plate reduces the volume of the pressure plate and avoids stress concentration at the edge of the traditional flat pressure plate, preventing the adhesive film from deforming or tearing due to excessive local pressure.

[0009] Preferably, through holes are provided on the mounting plate.

[0010] By adopting the above technical solution, through holes are made in the mounting plate to dissipate heat from the fusion structure and reduce its weight.

[0011] Preferably, the film lifting structure includes a fixed film lifting clamp, a movable film lifting clamp, and a lifting cylinder. The fixed film lifting clamp is fixedly installed on the connecting plate, and clamp cylinders are fixedly installed at both ends of the fixed film lifting clamp. The piston rod of the clamp cylinder passes through the fixed film lifting clamp and connects the movable film lifting clamp.

[0012] By adopting the above technical solution, the clamping plate is driven by the clamping cylinder to clamp the film, ensuring that the film material does not shift or slip during the lifting process.

[0013] Preferably, the connecting plate is mounted on the rotary cylinder, which is mounted on the lifting plate; the lifting plate is mounted on the lifting cylinder; the connecting plate is mounted on the idler roller; the film clamping plate is mounted on the telescopic cylinder, the telescopic end of the telescopic cylinder is mounted on the connecting block, and the stripper plate is mounted on the connecting block; the lifting plate is mounted on the pusher seat, which is mounted on the screw via a screw nut.

[0014] By adopting the above technical solution, the rotary cylinder drives the fixed film lifting clamp through the connecting plate to turn the new film towards the old film to be welded, and the telescopic cylinder extends the stripping plate to overlap the new film and the old film together, realizing the automation of film overlap, shortening the welding preparation time, and improving the overall production efficiency.

[0015] Preferably, the bottom surface of the pressure plate is provided with a groove, which matches the cutting edge of the cutter.

[0016] By adopting the above technical solution, the slotted pressure plate and the cutter work together to avoid over-cutting or under-cutting, ensuring that the residual edge of the old film can be removed in one go, reducing cutting defects and improving cutting quality.

[0017] Preferably, the pusher seat is L-shaped, with a triangular reinforcing plate between the two right-angled sides.

[0018] By adopting the above technical solution, the reinforcing plate enhances the overall rigidity of the push base and improves its structural strength.

[0019] Preferably, a rotary cylinder, clamping cylinder, telescopic cylinder, rodless cylinder, lifting cylinder, pressure plate cylinder, welding cylinder, motor, and external PLC controller are connected.

[0020] By adopting the above technical solution, the cylinder and motor can be automatically controlled through a PLC controller, thereby improving production efficiency.

[0021] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0022] 1. This utility model integrates the cutting structure, welding structure and film lifting structure into one compact structure with a small footprint. The film lifting structure automatically extracts the overlapping film during the connection of new and old adhesive films, realizing the automation of adhesive film welding. The production line does not need to stop and wait, which enhances the continuity and automation of production, improves the efficiency of the production line, shortens the process time, and increases the overall production capacity.

[0023] 2. The rotary cylinder of this utility model drives the fixed film lifting clamp plate through the connecting plate to turn the new film to the old film to be welded. The telescopic cylinder extends the stripping plate to overlap the new film and the old film, realizing the automation of film overlap, shortening the welding preparation time and improving the overall production efficiency.

[0024] 3. The grooved pressure plate and cutter of this utility model work together to avoid over-cutting or under-cutting, ensuring that the residual edge of the old film can be removed in one go, reducing cutting defects and improving cutting quality. Attached Figure Description

[0025] Figure 1 This is a structural diagram of the present utility model;

[0026] Figure 2 This is a side view of the cutter structure of this utility model;

[0027] Figure 3 This is a three-dimensional view of the welding structure of this utility model;

[0028] Figure 4 This is a side view of the membrane lifting structure of this utility model;

[0029] Figure 5 This is a bottom view of the membrane lifting structure of this utility model.

[0030] Drawing numbers: 1. Fixed film lifting clamp, 2. Rotary cylinder, 3. Cutter, 4. Pressure plate, 5. Heating block, 6. Moving film lifting clamp, 7. Lifting cylinder, 8. Connecting plate, 9. Pressure plate cylinder, 10. Welding cylinder, 11. Motor, 12. Lead screw; 13. Lifting plate, 14. Idler roller, 15. Telescopic cylinder, 16. Connecting block, 17. Stripping plate, 18. Pushing seat, 19. Rodless cylinder, 20. Mounting plate, 21. Welding base plate, 22. Baffle, 23. Groove, 24. Reinforcing plate, 25. Clamping plate cylinder, 26. Cutter cylinder bracket, 27. Welding cylinder bracket. Detailed Implementation

[0031] like Figure 1 As shown, the EVA automatic tail-end hot-melt mechanism includes a cutting structure and a welding structure. Figure 2 As shown, the cutter structure includes a cutter 3 and a rodless cylinder 19, with the cutter 3 mounted on the slider of the rodless cylinder 19. The rodless cylinder 19 is mounted on the frame via a cutter cylinder bracket 26. Figure 3 As shown, the welding structure includes a pressure plate 4 and a pressure plate cylinder 9. The pressure plate 4 is mounted on the pressure plate cylinder 9, and a heating block 5 is set on one side of the pressure plate 4. The heating block 5 is set on the mounting plate 20. The heating block 5 has a through hole for mounting a heating rod. The bottom surface of the heating block 5 is only 10mm wide. The heating block 5 is heated by the heating rod, thereby welding the adhesive film. The temperature is controllable, the welding is constant, the overlap area is small, and the welding effect is good. A welding cylinder 10 is set on the mounting plate 20 and is mounted on a right-angled welding cylinder bracket 27. A welding base plate 21 is set below the heating block 5. Baffles 22 are spaced apart on one side of the welding base plate 21, and the cutter 3 is located between the welding base plate 21 and the baffles 22. It also includes a film lifting structure, which is equipped with a rotary cylinder 2 and a lifting cylinder 7. The film lifting structure is connected to a lead screw 12. The film lifting structure is driven to lift by the lifting cylinder 7, rotated by the rotary cylinder 2, and moved back and forth by the lead screw 12. This application integrates the cutting structure, welding structure, and film lifting structure into one compact structure with a small footprint. The film lifting structure automatically extracts the overlapping film during the connection of new and old adhesive films, realizing the automation of adhesive film welding. The production line does not need to stop and wait, which enhances the continuity and automation of production, shortens the process time, and improves the overall capacity.

[0032] The pressure plate 4 has a bevel facing the welding side. The bevel on the welding side of the pressure plate 4 reduces the volume of the pressure plate and avoids stress concentration at the edges that occurs with traditional flat pressure plates, preventing the adhesive film from deforming or tearing due to excessive local pressure.

[0033] Through holes are provided on the mounting plate 20 to facilitate heat dissipation of the fusion structure and reduce its weight.

[0034] The bottom surface of the pressure plate 4 is provided with a groove 23, which cooperates with the cutting edge of the cutter 3. The pressure plate 4 with the groove 23 and the cutter 3 cooperate with each other to avoid over-cutting or under-cutting by the cutter, ensuring that the residual edge of the old film can be removed in one go, reducing cutting defects and improving cutting quality.

[0035] The pusher seat 18 is L-shaped, with a triangular reinforcing plate 24 placed between the two right-angled sides. The reinforcing plate enhances the overall rigidity of the pusher seat and improves the structural strength of the pusher seat 18.

[0036] like Figure 4 , 5As shown, the film lifting structure includes a fixed film lifting clamping plate 1, a movable film lifting clamping plate 6, and a lifting cylinder 7. The fixed film lifting clamping plate 1 is fixedly mounted on a connecting plate 8. Clamping cylinders 25 are fixedly mounted at both ends of the fixed film lifting clamping plate 1. The piston rod of the clamping cylinder 25 passes through the fixed film lifting clamping plate 1 and connects the movable film lifting clamping plate 6. The connecting plate 8 is mounted on a rotary cylinder 2, which is mounted on a lifting plate 13. The lifting cylinder 7 is mounted on the lifting plate 13. A support roller 14 is mounted on the connecting plate 8. A telescopic cylinder 15 is mounted on the fixed film lifting clamping plate 1. A connecting block 16 is mounted on the telescopic end of the telescopic cylinder 15, and a stripping plate 17 is mounted on the connecting block 16. The lifting plate 13 is mounted on a pusher seat 18, which is mounted on a lead screw 12 via a lead screw nut. The lead screw 12 is driven by a motor 11. Both the lead screw 12 and the motor 11 are fixedly mounted on the frame. The clamping cylinder 25 drives the lifting clamping plate 6 to clamp the film, ensuring that the film does not shift or slip during the lifting process. The rotary cylinder 2 drives the fixed lifting clamping plate 1 through the connecting plate 8 to turn the new film towards the old film to be welded. The telescopic cylinder 15 extends the stripping plate 17 to overlap the new film and the old film, realizing the automation of film overlap, shortening the welding preparation time, and improving the overall production efficiency.

[0037] The rotary cylinder 2, clamping plate cylinder 25, telescopic cylinder 15, rodless cylinder 19, lifting cylinder 7, pressure plate cylinder 9, welding cylinder 10, motor 11, and external PLC controller are connected. The PLC controller enables automated control of the cylinders and motor, improving production efficiency.

[0038] When the material on the roll is depleted, the photoelectric detection equipment provides feedback, and the PLC controller stops feeding and presses the tail material down with the pressure plate 4. The cutter 3 removes the excess tail material, leaving the welded portion for the next step. The end of the new film descends between the fixed lifting plate 1 and the moving lifting plate 6. The lifting structure, driven by the rotary cylinder 2 via the fixed lifting plate 1, rotates the end of the new film. The lifting cylinder 7 moves the end of the new film up and down, while the lead screw 12 and motor 11 work together to achieve forward and backward movement. Through the action of multiple cylinders and the movement of the lead screw 12 driven by the motor 11, the lifting structure delivers the new material to the tail material to be welded. The heating block 5 presses down to heat and weld the beginning and end of the new and old films. This hot-melt mechanism is a constant-temperature welding system with controllable temperature, small overlap area, and good welding effect. This mechanism reduces personnel operation, optimizes the overall process, shortens the process time, increases overall productivity, and facilitates personnel arrangement and allocation.

[0039] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been shown and explained in the embodiments. Without departing from the stated principles, the implementation of the present invention may have any variations or modifications.

Claims

1. An EVA automatic tail-to-head splicing hot melting mechanism, comprising a cutter structure and a melting structure; characterized in that: The cutting structure includes a cutting blade (3) and a rodless cylinder (19). The cutting blade (3) is mounted on the slider of the rodless cylinder (19). The welding structure includes a pressure plate (4) and a pressure plate cylinder (9). The pressure plate (4) is mounted on the pressure plate cylinder (9). A heating block (5) is provided on one side of the pressure plate (4). The heating block (5) is provided on the mounting plate (20). A welding cylinder (10) is provided on the mounting plate (20). The welding cylinder (10) is mounted on a right-angled welding cylinder bracket (27). A welding base plate (21) is provided below the heating block (5). A baffle (22) is provided at intervals on one side of the welding base plate (21). The cutting blade (3) is located between the gap between the welding base plate (21) and the baffle (22). The structure also includes a film lifting structure. A rotating cylinder (2) and a lifting cylinder (7) are provided on the film lifting structure. The film lifting structure is connected to a lead screw (12).

2. The EVA automatic butt splice hot melt mechanism according to claim 1, wherein: The pressure plate (4) has an inclined surface facing the welding side.

3. The EVA automatic tail-end sequential heat-fusion mechanism according to claim 1, characterized in that: Through holes are provided on the mounting plate (20).

4. The EVA automatic tail-end hot-melt mechanism according to claim 1, characterized in that: The film lifting structure includes a fixed film lifting clamp (1), a movable film lifting clamp (6), and a lifting cylinder (7). The fixed film lifting clamp (1) is fixedly installed on the connecting plate (8). Clamp cylinders (25) are fixedly installed at both ends of the fixed film lifting clamp (1). The piston rod of the clamp cylinder (25) passes through the fixed film lifting clamp (1) and the movable film lifting clamp (6) for connection.

5. The EVA automatic tail-end sequential heat-fusion mechanism according to claim 4, characterized in that: The connecting plate (8) is mounted on the rotary cylinder (2), which is mounted on the lifting plate (13); the lifting plate (13) is mounted on the lifting cylinder (7); the connecting plate (8) is mounted on the idler roller (14); the fixed lifting film clamping plate (1) is mounted on the telescopic cylinder (15), the telescopic end of the telescopic cylinder (15) is mounted on the connecting block (16), and the stripping plate (17) is mounted on the connecting block (16); the lifting plate (13) is mounted on the pusher seat (18), which is mounted on the screw (12) by the screw nut.

6. The EVA automatic tail-end sequential heat-melting mechanism according to claim 2, characterized in that: The bottom surface of the pressure plate (4) is provided with a groove (23), which is matched with the cutting edge of the cutter (3).

7. The EVA automatic tail-end sequential heat-melting mechanism according to claim 5, characterized in that: The pusher seat (18) is L-shaped, with a triangular reinforcing plate (24) between the two right-angled sides.

8. The EVA automatic tail-end sequential heat-melting mechanism according to claim 5, characterized in that: The rotary cylinder (2), clamping cylinder (25), telescopic cylinder (15), rodless cylinder (19), lifting cylinder (7), pressure plate cylinder (9), welding cylinder (10), motor (11) and external PLC controller are connected.

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