Hot-welding conveyor for processing plastic sheets

Abstract

The application discloses a hot welding conveying device for plastic sheet processing, which is applied to the technical field of plastic sheet processing and comprises a conveyor table, a conveying roller is rotationally connected in the conveyor table, a driving motor is bolted on one side of the outer part of the conveyor table, the output end of the driving motor is bolted with the conveying roller, and a chain disc is fixedly sleeved with one end of the conveying roller close to the driving motor. The upper half U-shaped plastic part is placed on the conveying roller for conveying, and the lower half U-shaped plastic part is fixed at the bottom of the hot welding mechanism. In the conveying process of the upper half U-shaped plastic part, the lower half U-shaped plastic part can move forward synchronously with the upper half U-shaped plastic part, and the hot welding mechanism is used for hot welding the upper half U-shaped plastic part and the lower half U-shaped plastic part together. Therefore, the conveying device does not need to be stopped during the hot welding process, the plastic parts can be conveyed and hot welded together simultaneously, and the processing efficiency is improved.

Description

Technical Field

[0001] This invention belongs to the field of plastic sheet processing technology, and specifically relates to a hot welding conveying device for plastic sheet processing. Background Technology

[0002] Plastic thermal welding refers to a joining method that uses heating to simultaneously melt the contact surfaces of two plastic parts and bond them together to form a whole.

[0003] Currently, Chinese invention patent CN103624974B discloses a plastic welding machine. Existing plastic hot welding is generally used to process plastic parts with relatively complex structures such as S-shapes, X-shapes, and U-shapes. It involves processing plastic into simple curved or flat plastic sheets, which are then hot-welded into the corresponding plastic parts. However, existing methods cannot perform hot welding during the conveying process of plastic parts; the conveyor equipment must be stopped to ensure that the plastic sheets are neatly hot-welded together. Therefore, in the plastic part processing of an assembly line, the conveyor equipment needs to be repeatedly stopped and restarted, which not only significantly affects the processing efficiency of plastic parts but also causes considerable damage to the machine due to the constant starting and stopping of the conveyor equipment, easily leading to damage and reducing the service life of the equipment. Summary of the Invention

[0004] The purpose of this invention is to provide a hot welding conveying device for processing plastic sheets. Its advantages are that it can hot weld plastic sheets together during the conveying process, improve the flatness of the hot welded plastic sheets, reduce the phenomenon of weld surface skew, and improve the processing efficiency and quality of plastic parts.

[0005] The above-mentioned technical objective of the present invention is achieved through the following technical solution: a hot welding conveying device for processing plastic sheets, comprising a conveyor platform, a conveyor roller rotatably connected inside the conveyor platform, a drive motor bolted to one side outside the conveyor platform, the output end of the drive motor being bolted to the conveyor roller, a chain disc fixedly sleeved at the end of the conveyor roller near the drive motor, a drive chain being drivenly connected to the surface of the chain disc, and a hot welding mechanism and a shaping mechanism cooperating with the conveyor roller respectively installed on the top of the conveyor platform.

[0006] The above technical solution involves placing the upper U-shaped plastic part on a conveyor roller for transport and fixing the lower U-shaped plastic part to the bottom of the hot welding mechanism. As the upper U-shaped plastic part is conveyed forward, the lower U-shaped plastic part moves forward synchronously with it, and the hot welding mechanism welds the two parts together. This eliminates the need to stop the conveyor during the hot welding process, allowing the plastic parts to be hot-welded together while being transported, thus improving processing efficiency. The upper and lower U-shaped plastic parts are hot-welded together as they move forward. Then, a shaping mechanism and the conveyor rollers press against each other to shape the welded U-shaped plastic parts, ensuring the welded ends are flush and parallel. This improves the flatness after welding, prevents skewing of the weld surface, and enhances processing quality.

[0007] The invention is further configured such that: the hot welding mechanism includes a rotating shaft rotatably connected to one side of the top of the conveyor platform; the end of the conveyor roller and the end of the rotating shaft away from the drive motor are both connected to a transmission belt via a pulley; a reciprocating lead screw rotatably connected to the conveyor platform is provided at the end of the rotating shaft near the shaping mechanism; meshing bevel gears are bolted to the end of the reciprocating lead screw near the rotating shaft and to the surface of the rotating shaft; a reciprocating lead screw sleeve slidably connected to the conveyor platform is threaded onto the surface of the reciprocating lead screw; a sliding plate is welded to the bottom of the reciprocating lead screw sleeve; a first cylinder is bolted to the top of the sliding plate; and a plastic part fixing plate is bolted to the output end of the first cylinder.

[0008] By adopting the above technical solution, the lower half of the U-shaped plastic part can move forward synchronously with the upper half of the U-shaped plastic part during the forward conveying process, without the need to stop the conveying.

[0009] The present invention is further configured such that: a lower half-U-shaped plastic part is provided at the bottom of the plastic part fixing plate, an upper half-U-shaped plastic part is provided at the bottom of the lower half-U-shaped plastic part and slidably connected to the conveying roller, an electric suction cup for use with the lower half-U-shaped plastic part is bolted inside the plastic part fixing plate, a heater is bolted to the side of the plastic part fixing plate away from the shaping mechanism, a second cylinder is bolted to the side of the heater away from the plastic part fixing plate, a metal sheet for use with the upper half-U-shaped plastic part and the lower half-U-shaped plastic part is bolted to the output end of the second cylinder, and a heat-conducting metal mesh for use with the metal sheet is installed inside the heater.

[0010] By adopting the above technical solution, the metal sheet absorbs the heat generated by the heater, so that when the metal sheet is applied to the upper and lower U-shaped plastic parts, the end faces of the upper and lower U-shaped plastic parts can be melted, allowing them to be joined.

[0011] The present invention is further configured such that: the shaping mechanism includes a shaping roller disposed on the top of the conveyor roller and rotatably connected to the conveyor platform; one end of the shaping roller and the conveyor roller are both bolted with meshing linkage gears; an expansion arc-shaped piece that cooperates with the upper half U-shaped plastic part and the lower half U-shaped plastic part is slidably connected to the surface of the shaping roller; inclined sliding grooves are provided on both sides of the bottom of the expansion arc-shaped piece; a first spring is installed on both sides inside the shaping roller; and a conical abutment block that is slidably connected to the shaping roller and the expansion arc-shaped piece is fixedly connected to one end of each of the two first springs near the expansion arc-shaped piece.

[0012] By adopting the above technical solution, the welding end faces of the upper and lower U-shaped plastic parts that are fused together are rolled flat to make the welding end faces parallel to each other and prevent the welding surface from becoming skewed.

[0013] The present invention is further configured such that: hexagonal sliding rods are welded to both ends of the conveying roller, and sliding clamps that cooperate with the upper U-shaped plastic parts are slidably sleeved on the surface of the hexagonal sliding rods; a second spring that is bolted to the conveying roller is fixedly connected to the side of the sliding clamps away from the conveying roller.

[0014] By employing the above technical solution, the sliding clamp is pushed by the elastic force of the second spring to slide on the surface of the hexagonal slide rod, thereby clamping and fixing the upper U-shaped plastic part and preventing swaying or deviation during transportation. At the same time, the hexagonal slide rod can drive the sliding clamp to rotate synchronously with the conveying roller to transport the upper U-shaped plastic part.

[0015] The present invention is further configured such that: a fixed frame is provided on the side of the shaping mechanism away from the hot welding mechanism and bolted to the conveyor platform; a cooling window is bolted to the top of the fixed frame; a shaping fan for use with the upper half U-shaped plastic part and the lower half U-shaped plastic part is bolted to the inside of the cooling window; and a filter screen is fixedly connected to the top of the cooling window.

[0016] By using the above technical solution, the upper and lower U-shaped plastic parts that have entered the fixed frame are cooled by turning on the shaping fan, thereby quickly shaping the welding surface.

[0017] The present invention is further configured such that: both sides of the reciprocating lead screw sleeve are slidably connected to limiting rods welded to the conveyor platform, and the reciprocating lead screw sleeve is slidably connected to the surface of the reciprocating lead screw through the limiting rods.

[0018] By adopting the above technical solution, the reciprocating lead screw sleeve that slides back and forth is limited by the limiting rod, so that the reciprocating lead screw sleeve cannot rotate.

[0019] The present invention is further configured such that: a plastic part retaining plate that abuts against the upper half of the U-shaped plastic part is welded to the bottom side of the plastic part fixing plate away from the heater.

[0020] Using the above technical solution, when welding the upper and lower U-shaped plastic parts, a plastic part retaining plate is used to hold one end of the upper U-shaped plastic part in place. Therefore, when the lower U-shaped plastic part presses down on the upper U-shaped plastic part, the curved surface of the upper U-shaped plastic part will not rotate, preventing end-face misalignment.

[0021] The present invention is further configured such that a discharge chute, which works in conjunction with the conveyor roller, is bolted to one end of the conveyor platform away from the hot welding mechanism.

[0022] The above technical solution facilitates the sliding of the U-shaped plastic part, after hot welding and cooling, out of the top of the conveyor roller.

[0023] In summary, the present invention has the following beneficial effects:

[0024] 1. The upper U-shaped plastic part is placed on a conveyor roller for transport, while the lower U-shaped plastic part is fixed to the bottom of the heat welding mechanism. As the upper U-shaped plastic part is conveyed forward, the lower U-shaped plastic part moves forward synchronously with it, and the heat welding mechanism welds the two parts together. This eliminates the need to stop the conveyor during the heat welding process, allowing the plastic parts to be heat-welded together while being transported, thus improving processing efficiency.

[0025] 2. The upper and lower U-shaped plastic parts are heat-welded together as they move forward. Then, a shaping mechanism and conveyor rollers are used to press and shape the welded U-shaped plastic parts, ensuring the welded ends are flush and parallel. This improves the flatness after welding, prevents skewing, and enhances processing quality. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of the present invention;

[0027] Figure 2 This is a partial structural cross-sectional view of the present invention;

[0028] Figure 3 This is a schematic diagram of the hot welding mechanism of the present invention;

[0029] Figure 4 This is a cross-sectional view of the hot welding mechanism structure of the present invention;

[0030] Figure 5 This is a cross-sectional view of the conveyor roller structure of the present invention;

[0031] Figure 6 This is a cross-sectional view of the standardized mechanism structure of the present invention;

[0032] Figure 7 This is a schematic diagram of the working state of the shaping mechanism of the present invention;

[0033] Figure 8 This is a cross-sectional view of the cooling window structure of the present invention;

[0034] Figure 9 This is the present invention. Figure 2 Enlarged view of point A in the image.

[0035] Reference numerals: 1. Conveyor platform; 2. Drive motor; 3. Conveyor roller; 4. Chain wheel; 5. Transmission chain; 6. Welding mechanism; 601. Rotating shaft; 602. Transmission belt; 603. Reciprocating screw; 604. Bevel gear; 605. Reciprocating screw sleeve; 606. Sliding plate; 607. First cylinder; 608. Plastic part fixing plate; 609. Electric suction cup; 610. Heater; 611. Second cylinder; 612. Metal sheet; 613. Heat-conducting metal mesh; 7. Shaping mechanism; 701. Shaping roller; 702. Linkage gear; 703. First spring; 704. Expansion arc plate; 705. Inclined slide groove; 706. Conical stop block; 8. Upper U-shaped plastic part; 9. Lower U-shaped plastic part; 10. Hexagonal slide bar; 11. Second spring; 12. Sliding clamp; 13. Plastic part fixing plate; 14. Fixing frame; 15. Cooling window; 16. Filter screen; 17. Shaping fan; 18. Limiting rod; 19. Discharge chute. Detailed Implementation

[0036] The present invention will be further described in detail below with reference to the accompanying drawings.

[0037] Example 1:

[0038] refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 6 , Figure 7 , Figure 9A heat-welding conveying device for processing plastic sheets includes a conveyor platform 1. A conveyor roller 3 is rotatably connected inside the conveyor platform 1. A drive motor 2 is bolted to one side of the conveyor platform 1, and the output end of the drive motor 2 is bolted to the conveyor roller 3. A chain disc 4 is fixedly sleeved at the end of the conveyor roller 3 near the drive motor 2. A drive chain 5 is drivenly connected to the surface of the chain disc 4. A heat-welding mechanism 6 and a shaping mechanism 7, which cooperate with the conveyor roller 3, are respectively installed on the top of the conveyor platform 1. The upper half of a U-shaped plastic part 8 is placed on the conveyor roller 3 for conveying, while the lower half of a U-shaped plastic part 9 is fixed to the bottom of the heat-welding mechanism 6. During the forward conveying of the upper half of the U-shaped plastic part 8, the lower half of the U-shaped plastic part 9 can move forward synchronously with the upper half of the U-shaped plastic part 8, and the heat-welding mechanism 6 heat-welds the upper half of the U-shaped plastic part 8 and the lower half of the U-shaped plastic part 9 together. Therefore, the conveyor device does not need to be stopped during the heat-welding process; plastic parts can be heat-welded together while being conveyed, improving processing efficiency. The upper U-shaped plastic part 8 and the lower U-shaped plastic part 9 are heat-welded together as they move forward. Then, a shaping mechanism 7 and a conveying roller 3 are used to press and shape the heat-welded U-shaped plastic parts, flushing the welded ends of the upper and lower U-shaped plastic parts 8 and 9, making them parallel to each other. This improves the flatness after heat welding, prevents skewing of the weld surface, and improves processing quality.

[0039] refer to Figure 2 , Figure 3 , Figure 4 The hot welding mechanism 6 includes a rotating shaft 601 rotatably connected to one side of the top of the conveyor platform 1. The end of the conveyor roller 3 and the rotating shaft 601 away from the drive motor 2 are both connected to a transmission belt 602 via pulleys. A reciprocating screw 603, rotatably connected to the conveyor platform 1, is provided at the end of the rotating shaft 601 near the shaping mechanism 7. Meshing bevel gears 604 are bolted to the end of the reciprocating screw 603 near the rotating shaft 601 and to the surface of the rotating shaft 601. A reciprocating screw sleeve 605, slidably connected to the conveyor platform 1, is threaded onto the surface of the reciprocating screw 603. A sliding plate 606 is welded to the bottom of the reciprocating screw sleeve 605. A first cylinder 607 is bolted to the top of the sliding plate 606. A plastic part fixing plate 608 is bolted to the output end of the first cylinder 607. This allows the lower half of the U-shaped plastic part 9 to move forward synchronously with the upper half of the U-shaped plastic part 8 during forward conveying, without requiring the conveying to be stopped.

[0040] refer to Figure 3 , Figure 4The bottom of the plastic part fixing plate 608 is provided with a lower half-U-shaped plastic part 9, and the bottom of the lower half-U-shaped plastic part 9 is provided with an upper half-U-shaped plastic part 8 that is slidably connected to the conveying roller 3. An electric suction cup 609 that works with the lower half-U-shaped plastic part 9 is bolted inside the plastic part fixing plate 608. A heater 610 is bolted to the side of the plastic part fixing plate 608 away from the shaping mechanism 7. A second cylinder 611 is bolted to the side of the heater 610 away from the plastic part fixing plate 608. A metal sheet 612 that works with the upper half-U-shaped plastic part 8 and the lower half-U-shaped plastic part 9 is bolted to the output end of the second cylinder 611. A heat-conducting metal mesh 613 that works with the metal sheet 612 is installed inside the heater 610. The metal sheet 612 absorbs the heat generated by the heater 610, so that when the metal sheet 612 is attached to the upper half of the U-shaped plastic part 8 and the lower half of the U-shaped plastic part 9, the end faces of the upper half of the U-shaped plastic part 8 and the lower half of the U-shaped plastic part 9 can be melted, so that they can be joined.

[0041] refer to Figure 2 , Figure 6 , Figure 7 The shaping mechanism 7 includes a shaping roller 701 mounted on top of the conveyor roller 3 and rotatably connected to the conveyor platform 1. Both the shaping roller 701 and the conveyor roller 3 have meshing linkage gears 702 bolted to one end. An expansion arc-shaped plate 704, which mates with the upper U-shaped plastic part 8 and the lower U-shaped plastic part 9, is slidably connected to the surface of the shaping roller 701. Inclined grooves 705 are formed on both sides of the bottom of the expansion arc-shaped plate 704. First springs 703 are installed on both sides inside the shaping roller 701. Conical abutments 706, which slidably connect to the shaping roller 701 and the expansion arc-shaped plate 704 respectively, are fixedly connected to the ends of the two first springs 703 near the expansion arc-shaped plate 704. The roller presses the welded ends of the upper U-shaped plastic part 8 and the lower U-shaped plastic part 9 flat, making the welded ends parallel to each other and preventing skewing of the weld surface.

[0042] refer to Figure 4 , Figure 5 Both ends of the conveyor roller 3 are welded with hexagonal slide bars 10. A sliding clamping plate 12, which works in conjunction with the upper U-shaped plastic part 8, is slidably fitted onto the surface of the hexagonal slide bar 10. A second spring 11, bolted to the conveyor roller 3, is fixedly connected to the side of the sliding clamping plate 12 away from the conveyor roller 3. By utilizing the elastic force of the second spring 11 to push the sliding clamping plate 12 to slide on the surface of the hexagonal slide bar 10, the upper U-shaped plastic part 8 is clamped and fixed, preventing swaying or deviation during conveying. Simultaneously, the hexagonal slide bar 10 can drive the sliding clamping plate 12 to rotate synchronously with the conveyor roller 3 to convey the upper U-shaped plastic part 8.

[0043] refer to Figure 1 , Figure 2 , Figure 8A fixed frame 14, bolted to the conveyor platform 1, is provided on the side of the shaping mechanism 7 away from the hot welding mechanism 6. A cooling window 15 is bolted to the top of the fixed frame 14. A shaping fan 17, which works in conjunction with the upper half-U-shaped plastic part 8 and the lower half-U-shaped plastic part 9, is bolted inside the cooling window 15. A filter screen 16 is fixedly connected to the top of the cooling window 15. By turning on the shaping fan 17, the upper half-U-shaped plastic part 8 and the lower half-U-shaped plastic part 9 that enter the fixed frame 14 are cooled down, thereby quickly shaping the welded surface.

[0044] refer to Figure 1 Both sides of the reciprocating screw sleeve 605 are slidably connected to limiting rods 18 welded to the conveyor base 1, and the reciprocating screw sleeve 605 is slidably connected to the surface of the reciprocating screw 603 through the limiting rods 18. The limiting rods 18 are used to limit the reciprocating screw sleeve 605 as it slides back and forth, so that the reciprocating screw sleeve 605 cannot rotate.

[0045] refer to Figure 3 , Figure 4 A plastic part retaining plate 13, which abuts against the upper U-shaped plastic part 8, is welded to the bottom side of the plastic part fixing plate 608 away from the heater 610. When the upper U-shaped plastic part 8 and the lower U-shaped plastic part 9 are welded together, the plastic part retaining plate 13 holds one end of the upper U-shaped plastic part 8 in place. Therefore, when the lower U-shaped plastic part 9 presses down on the upper U-shaped plastic part 8, the arc-shaped surface of the upper U-shaped plastic part 8 will not rotate, preventing end face displacement.

[0046] refer to Figure 1 , Figure 2 The end of the conveyor platform 1 furthest from the hot welding mechanism 6 is bolted with a discharge chute 19 that works in conjunction with the conveyor roller 3. This facilitates the sliding of the U-shaped plastic part, after hot welding and cooling, out from the top of the conveyor roller 3.

[0047] Brief description of the operation: By turning on the drive motor 2, the chain 4 and the transmission chain 5 mesh with each other, thereby driving multiple conveyor rollers 3 inside the conveyor platform 1 to rotate synchronously, allowing the upper U-shaped plastic part 8 placed on top of the conveyor rollers 3 to move forward. Then, the conveyor rollers 3 drive the rotating shaft 601 to rotate via the transmission belt 602, causing the reciprocating screw 603 to rotate after meshing with two bevel gears 604 and engaging with the reciprocating screw sleeve 605. This causes the reciprocating screw sleeve 605 to drive the bottom sliding plate 606 to slide back and forth under the limit of the limiting rod 18. Afterwards, by placing the lower U-shaped plastic part 9 at the bottom of the plastic part fixing plate 608 and activating the electric suction cup 609 to adsorb and fix the lower U-shaped plastic part 9, the lower U-shaped plastic part 9 can move synchronously with the upper U-shaped plastic part 8 during the moving and conveying process. Then, during the synchronous movement of the upper U-shaped plastic part 8 and the lower U-shaped plastic part 9, the first cylinder 607 is activated to move the plastic part fixing plate 608 downward, bringing the arc-shaped end faces of the upper U-shaped plastic part 8 and the lower U-shaped plastic part 9 closer together. At the same time, the second cylinder 611 is activated to extend the metal sheet 612 out of the heater 610, allowing the metal sheet 612, heated by the heat-conducting metal mesh 613, to be inserted between the arc-shaped end faces of the upper U-shaped plastic part 8 and the lower U-shaped plastic part 9 for heating and melting. Finally, by retracting the metal sheet 612 into the heater 610 and pressing the lower U-shaped plastic part 9 onto the top of the upper U-shaped plastic part 8, the arc-shaped end faces of the upper U-shaped plastic part 8 and the lower U-shaped plastic part 9 are fused together to form a U-shaped plastic part, thus enabling heat welding during the conveying of the upper U-shaped plastic part 8.

[0048] After the upper U-shaped plastic part 8 and the lower U-shaped plastic part 9 are welded together by the hot welding mechanism 6, the conveying roller 3 transports the upper U-shaped plastic part 8 and the lower U-shaped plastic part 9 to the surface of the shaping mechanism 7, so that the U-shaped plastic part formed by welding the upper U-shaped plastic part 8 and the lower U-shaped plastic part 9 can be fitted onto the surface of the shaping roller 701. Then, by using the elastic force of the first spring 703 to push the conical abutment 706 forward, the expanding arc-shaped piece 704 slides against the surface of the conical abutment 706 through the inclined groove 705, thereby adhering to and abutting the arc-shaped inner side of the U-shaped plastic part. Then, the shaping roller 701 and the conveying roller 3 are meshed by the linkage gear 702, causing the shaping roller 701 to rotate in the opposite direction to the conveying roller 3. This allows the expanding arc-shaped plate 704 and the conveying roller 3 to roll the U-shaped plastic part, pressing the welded ends of the upper and lower U-shaped plastic parts 8 and 9 flat and making them parallel. At this point, because the U-shaped plastic part is blocked by the shaping roller 701 and cannot move forward, the friction generated by the expansion of the expanding arc-shaped plate 704 against the U-shaped plastic part will cause the U-shaped plastic part to rotate 180° clockwise, thus moving the arc-shaped end of the U-shape to the other direction, allowing the U-shaped plastic part to detach from the shaping roller 701 and continue sliding forward.

[0049] This specific embodiment is merely an explanation of the present invention and is not intended to limit the invention. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A hot-weld conveyor for processing plastic sheets, comprising a conveyor table (1), characterized in that: The inside of the conveyor platform (1) is rotatably connected with a conveying roller (3), one side of the outside of the conveyor platform (1) is bolted with a driving motor (2), the output end of the driving motor (2) is bolted with the conveying roller (3), one end of the conveying roller (3) close to the driving motor (2) is fixedly sleeved with a chain disc (4), the surface of the chain disc (4) is drivingly connected with a transmission chain (5), the top of the conveyor platform (1) is respectively provided with a hot welding mechanism (6) and a shaping mechanism (7) used in cooperation with the conveying roller (3), the hot welding mechanism (6) comprises a rotating shaft (601) rotatably connected with one side of the top of the conveyor platform (1), the conveying roller (3) and the end of the rotating shaft (601) away from the driving motor (2) are both drivingly connected with a transmission belt (602) through a belt pulley, one end of the rotating shaft (601) close to the shaping mechanism (7) is rotatably connected with a reciprocating screw rod (603) of the conveyor platform (1), the end of the reciprocating screw rod (603) close to the rotating shaft (601) and the surface of the rotating shaft (601) are both bolted with intermeshing conical gears (604), the surface of the reciprocating screw rod (603) is threadedly sleeved with a reciprocating screw rod sleeve (605) slidingly connected with the conveyor platform (1), the bottom of the reciprocating screw rod sleeve (605) is welded with a sliding plate (606), the top of the sliding plate (606) is bolted with a first air cylinder (607), the output end of the first air cylinder (607) is bolted with a plastic part fixing plate (608), the bottom of the plastic part fixing plate (608) is provided with a lower half U-shaped plastic part (9), the bottom of the lower half U-shaped plastic part (9) is provided with an upper half U-shaped plastic part (8) slidingly connected with the conveying roller (3), the inside of the plastic part fixing plate (608) is bolted with an electric suction cup (609) used in cooperation with the lower half U-shaped plastic part (9), one side of the plastic part fixing plate (608) away from the shaping mechanism (7) is bolted with a heater (610), one side of the heater (610) away from the plastic part fixing plate (608) is bolted with a second air cylinder (611), the output end of the second air cylinder (611) is bolted with a metal sheet (612) used in cooperation with the upper half U-shaped plastic part (8) and the lower half U-shaped plastic part (9), the inside of the heater (610) is mounted with a heat-conducting metal mesh (613) used in cooperation with the metal sheet (612), the shaping mechanism (7) comprises a shaping roller (701) provided on the top of the conveying roller (3) and rotatably connected with the conveyor platform (1), one end of the shaping roller (701) and the conveying roller (3) is bolted with intermeshing linkage gears (702), the surface of the shaping roller (701) is slidingly connected with an expansion arc-shaped sheet (704) used in cooperation with the upper half U-shaped plastic part (8) and the lower half U-shaped plastic part (9), the two sides of the bottom of the expansion arc-shaped sheet (704) are both provided with inclined sliding grooves (705), the two sides of the inside of the shaping roller (701) are both mounted with first springs (703),Two said first spring (703) near one end of the expansion arc piece (704) are fixedly connected with the tapered block (706) which is slidably connected with the shaping roller (701) and the expansion arc piece (704) respectively.

2. A hot-weld conveyor for processing plastic sheet material as defined in claim 1, wherein: Both ends of the conveying roller (3) are welded with hexagonal slide rods (10), the surface of the hexagonal slide rods (10) is slidably sleeved with slide clamping plates (12) used in cooperation with the half U-shaped plastic pieces (8), one side of the slide clamping plates (12) away from the conveying roller (3) is fixedly connected with second springs (11) bolted with the conveying roller (3).

3. A hot-weld conveyor for processing plastic sheet material as defined in claim 1, wherein: One side of the shaping mechanism (7) away from the hot welding mechanism (6) is provided with a fixed frame (14) bolted with the conveyor table (1), the top of the fixed frame (14) is bolted with a cooling window (15), the inside of the cooling window (15) is bolted with shaping fans (17) used in cooperation with the half U-shaped plastic pieces (8) and the half U-shaped plastic pieces (9), and the top of the cooling window (15) is fixedly connected with a filter screen (16).

4. The hot bar apparatus of claim 1, wherein: Both sides of the reciprocating wire rod sleeve (605) are slidably connected with limiting rods (18) welded with the conveyor table (1), and the reciprocating wire rod sleeve (605) is slidably connected on the surface of the reciprocating wire rod (603) through the limiting rods (18).

5. The hot bar apparatus of claim 1, wherein: The bottom of the plastic piece fixing plate (608) away from the heater (610) is welded with a plastic piece clamping plate (13) abutting against the half U-shaped plastic piece (8).

6. A hot-weld conveyor for processing plastic sheet material as defined in claim 1, wherein: One end of the conveyor table (1) away from the hot welding mechanism (6) is bolted with a material discharging chute (19) used in cooperation with the conveying roller (3).

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