A hot-melt welding integrated device for automobile sealing strips

Abstract

This utility model discloses an integrated hot-melt welding device for automotive sealing strips, relating to the field of automotive parts manufacturing technology. The device includes a worktable, support legs, an adjustment mechanism, and a quick-installation mechanism. The support legs are fixedly mounted on the bottom of the worktable, and an adjustment bracket is fixedly mounted on the top of the worktable. An adjustment mechanism for controlling the mating of the sealing strip is fixedly mounted at the bottom of the adjustment bracket, and a quick-installation mechanism for rapidly installing the mold cavity is fixedly mounted at the top of the adjustment bracket. Through the inclined engagement of the wedge block and roller, and the limiting design of the dovetail groove, a rocker arm drives the pressure plate to quickly press the mold cavity. This dual-fixing mechanism significantly shortens the mold cavity replacement and debugging time, reduces operational complexity, and enhances the installation stability of the mold cavity, adapting to the flexible production needs of multiple sealing strip models, and significantly improving the equipment's versatility and production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts manufacturing technology, specifically to an integrated device for hot-melt welding of automotive sealing strips. Background Technology

[0002] Automotive sealing strips, as important components of automobiles, are widely used in the body, windows, doors, sunroof, engine compartment, and trunk, serving functions such as sound insulation, dustproofing, waterproofing, shock absorption, maintaining a stable interior environment, and energy conservation and insulation. In the production process of automotive sealing strips, hot-melt welding is a common joining method. While existing integrated hot-melt welding devices for automotive sealing strips can achieve welding functions, they have several problems.

[0003] A patent document with authorization announcement number CN221562313U discloses a sealing strip welding device. This device fixes the sealing strip using a clamping structure, then uses a motor to drive a gear to rotate. The gear meshes with two racks, causing the racks to move two connecting blocks. An angle adjustment structure then rotates the clamping structure, adjusting the welding angle of the sealing strip. A welding machine heats the sealing strip, melting and bonding it together, thus improving the device's practicality and versatility. However, this device is inconvenient for quick mold cavity installation. Producing different types of sealing strips requires frequent mold cavity changes, and each installation necessitates significant time for debugging and calibration. This not only reduces production efficiency but also increases production costs, making it difficult to meet the high-efficiency production demands of the modern automotive manufacturing industry.

[0004] Based on this, an integrated hot melt welding device for automotive sealing strips is now provided, which can eliminate the drawbacks of existing devices. Utility Model Content

[0005] The purpose of this invention is to provide an integrated hot-melt welding device for automotive sealing strips to solve the problem of inconvenient quick installation of the mold cavity in the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] An integrated device for hot-melt welding of automotive sealing strips includes: a worktable, support legs, an adjustment mechanism, and a quick-installation mechanism. The support legs are fixedly mounted on the bottom of the worktable, and an adjustment bracket is fixedly mounted on the top of the worktable. An adjustment mechanism for controlling the mating of the sealing strip is fixedly mounted on the bottom of the adjustment bracket, and a quick-installation mechanism for quickly installing the mold cavity is fixedly mounted on the top of the adjustment bracket.

[0008] Based on the above technical solutions, this utility model also provides the following optional technical solutions:

[0009] In one alternative embodiment: the adjustment mechanism includes an electric cylinder fixedly mounted at the bottom of the adjustment bracket, the output end of the electric cylinder is rotatably provided with two connecting rods, two guide plates are slidably mounted on the adjustment bracket, the ends of the two connecting rods are rotatably connected to the two guide plates respectively, the top of each guide plate is fixedly provided with a mounting base, a guide rod is fixedly provided on the outside of the mounting base, a limiting plate is fixedly provided on the top of the adjustment bracket, and the guide rod is slidably connected to the limiting plate.

[0010] In one alternative embodiment: the quick-installation mechanism includes a mounting base fixedly mounted on the top of a mounting base; a clamping bracket fixedly mounted on the top of the mounting base; a fixing plate fixedly mounted on the top of the clamping bracket; a wedge block slidably mounted on the top of the clamping bracket; a first screw rotatably mounted on the left side of the wedge block; the first screw is threadedly connected to the fixing plate; a rocker arm fixedly mounted on the left end of the first screw; a rotating bracket fixedly mounted on the top of the clamping bracket; a pressure plate rotatably mounted on the rotating bracket; a roller adapted to the wedge block rotatably mounted on the left end of the pressure plate; a limiting bracket fixedly mounted on the top of the mounting base; a mold cavity slidably mounted on the inner wall of the limiting bracket; a sliding rod fixedly mounted on the right side of the mold cavity; a mounting plate fixedly mounted on the right end of the sliding rod; a pressure module slidably mounted on the sliding rod; a cylinder fixedly mounted on the right side of the mounting plate; and the output end of the cylinder fixedly connected to the right side of the pressure module.

[0011] In one alternative: the top of the adjusting bracket is fixedly equipped with a lifting mechanism for flexibly raising the welding position.

[0012] In one alternative embodiment: the lifting mechanism includes a sliding bracket fixedly mounted on the top of the adjusting bracket, a slider slidably mounted on the inner wall of the sliding bracket, a second screw rotatably mounted on the inner wall of the sliding bracket, the slider and the second screw being threadedly connected, a motor fixedly mounted on the top of the sliding bracket, the output end of the motor being fixedly connected to the top end of the second screw, a connecting rod fixedly mounted on the outside of the slider, and a welder fixedly mounted on the end of the connecting rod.

[0013] In one alternative: the top of the wedge block has a compression ramp adapted to the roller, and the top of the clamping bracket has a sliding groove adapted to the wedge block.

[0014] In one alternative: the end of the pressure plate is provided with a polyurethane layer.

[0015] In one alternative: the inner wall of the limiting bracket is provided with a dovetail tenon groove that matches the mold cavity.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] 1. This utility model achieves precise lateral displacement of the mold cavity by using an electric cylinder to drive the connecting rod and guide plate to move synchronously, combined with the sliding guide design of the guide rod and the limiting plate. This design significantly improves the accuracy and stability of the sealing strip connection, reduces manual adjustment steps, ensures the consistency and reliability of the welding process, and effectively improves production efficiency and welding quality.

[0018] 2. This utility model utilizes the inclined engagement of wedge blocks and rollers, along with the limiting design of dovetail grooves, and a rocker-driven pressure plate to quickly press the mold cavity. This dual fixing mechanism significantly shortens the mold cavity replacement and debugging time, reduces operational complexity, and enhances the installation stability of the mold cavity. It adapts to the flexible production needs of various sealing strip models, significantly improving equipment versatility and production efficiency. Attached Figure Description

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

[0020] Figure 2 This is a schematic diagram of the adjustment mechanism in this utility model.

[0021] Figure 3 This is a schematic diagram of the guide plate in this utility model.

[0022] Figure 4 This is a schematic diagram of the quick-assembly mechanism in this utility model.

[0023] Figure 5 This is a schematic diagram of the wedge block in this utility model.

[0024] Figure 6 This is a schematic diagram of the limiting bracket in this utility model.

[0025] Figure 7 This is a schematic diagram of the lifting mechanism in this utility model.

[0026] Figure reference numerals: 1. Workbench; 2. Support leg; 3. Adjusting bracket; 4. Electric cylinder; 5. Connecting rod; 6. Guide plate; 7. Mounting base; 8. Guide rod; 9. Limiting plate; 10. Mounting seat; 11. Pressing bracket; 12. Fixing plate; 13. Wedge block; 14. First screw; 15. Rocker arm; 16. Rotating bracket; 17. Pressure plate; 18. Roller; 19. Limiting bracket; 20. Mold cavity; 21. Sliding rod; 22. Mounting plate; 23. Pressing module; 24. Cylinder; 25. Sliding bracket; 26. Slider; 27. Second screw; 28. Motor; 29. ​​Connecting rod; 30. Welding device. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0028] In one embodiment, such as Figures 1-7 As shown, an integrated device for hot-melt welding of automotive sealing strips includes: a worktable 1, a support leg 2, an adjustment mechanism, and a quick-installation mechanism. The support leg 2 is fixedly mounted on the bottom of the worktable 1, and an adjustment bracket 3 is fixedly mounted on the top of the worktable 1; the bottom of the adjustment bracket 3 is fixedly mounted with an adjustment mechanism for controlling the mating of the sealing strip; and the top of the adjustment bracket 3 is fixedly mounted with a quick-installation mechanism for quickly installing the mold cavity 20.

[0029] In one embodiment, such as Figure 2 and Figure 3 As shown, the adjustment mechanism includes an electric cylinder 4 fixedly mounted at the bottom of the adjustment bracket 3. The output end of the electric cylinder 4 is rotatably provided with two connecting rods 5. Two guide plates 6 are slidably mounted on the adjustment bracket 3. The ends of the two connecting rods 5 are rotatably connected to the two guide plates 6 respectively. The top of each guide plate 6 is fixedly provided with a mounting base 7. A guide rod 8 is fixedly provided on the outside of the mounting base 7. A limiting plate 9 is fixedly provided on the top of the adjustment bracket 3. The guide rod 8 is slidably connected to the limiting plate 9.

[0030] The output end of the electric cylinder 4 pushes two connecting rods 5 to drive two guide plates 6 to expand synchronously to both sides. When the output end retracts, it drives the two guide plates 6 to retract synchronously to the middle. At the same time, the guide plates 6 drive the mounting base 7 to move, so that the guide plates 6 drive the sealing strips in the two mold cavities to be welded together. By setting the limit plate 9, the guide rod 8 on the mounting base 7 is slidably guided, making the movement more stable.

[0031] In one embodiment, such as Figures 4-6 As shown, the quick-installation mechanism includes a mounting base 10 fixedly mounted on the top of the mounting base 7. A clamping bracket 11 is fixedly mounted on the top of the mounting base 10, and a fixing plate 12 is fixedly mounted on the top of the clamping bracket 11. A wedge block 13 is slidably mounted on the top of the clamping bracket 11. A first screw 14 is rotatably mounted on the left side of the wedge block 13. The first screw 14 is threadedly connected to the fixing plate 12. A rocker arm 15 is fixedly mounted on the left end of the first screw 14. A rotating bracket 16 is fixedly mounted on the top of the clamping bracket 11, and a pressure plate 17 is rotatably mounted on the rotating bracket 16. The left end of 17 is provided with a roller 18 that is adapted to the wedge block 13. The top of the mounting base 10 is fixedly provided with a limiting bracket 19. The inner wall of the limiting bracket 19 is provided with a mold cavity 20. The right side of the mold cavity 20 is fixedly provided with a sliding rod 21. The right end of the sliding rod 21 is fixedly provided with a mounting plate 22. The sliding rod 21 is provided with a pressure module 23. The right side of the mounting plate 22 is fixedly provided with a cylinder 24. The output end of the cylinder 24 is fixedly connected to the right side of the pressure module 23. The top of the adjusting bracket 3 is fixedly provided with a lifting mechanism for flexibly lifting the welding.

[0032] The top of the wedge block 13 has a pressing ramp adapted to the roller 18, and the top of the clamping bracket 11 has a sliding groove adapted to the wedge block 13. The end of the pressure plate 17 is provided with a polyurethane layer (2-5mm thick). Polyurethane has high elasticity and good resilience, which can absorb impact and vibration during the clamping process and reduce damage caused by rigid contact. The inner wall of the limiting bracket 19 has a dovetail groove (groove width tolerance ±0.1mm) adapted to the mold cavity 20. By using the dovetail mounting structure, the mold cavity 20 and the limiting bracket 19 are tightly connected, improving the stability of the mold cavity 20.

[0033] The mold cavity 20 to be replaced is slidably installed on the inner wall of the limiting bracket 19 via a dovetail tenon, ensuring a tight connection. Then, the rocker arm 15 is manually cranked, causing the first screw 14 to rotate. Since the first screw 14 is threadedly connected to the fixing plate 12, its rotation pushes the wedge block 13 to move laterally. Simultaneously, the extrusion ramp on the wedge block 13 extrudes the roller 18 at the left end of the pressure plate 17, causing the pressure plate 17 to tilt to the right under the rotating bracket 16. The polyurethane layer at the end of the pressure plate 17 then presses the mold cavity 20 firmly. This double fixing method of the dovetail tenon and pressure plate 17 ensures a secure installation of the mold cavity 20, significantly improving installation efficiency. During welding, the sealing strip is placed in the mold cavity 20. Then, the output end of the cylinder 24 pushes the pressure module 23 to press the sealing strip, moving it towards the center under the adjustment mechanism, allowing the welder 30 to weld the two sealing strips.

[0034] In one embodiment, such as Figure 7 As shown, the lifting mechanism includes a sliding bracket 25 fixedly mounted on the top of the adjusting bracket 3. A slider 26 is slidably mounted on the inner wall of the sliding bracket 25, and a second screw 27 is rotatably mounted on the inner wall of the sliding bracket 25. The slider 26 and the second screw 27 are threadedly connected. A motor 28 is fixedly mounted on the top of the sliding bracket 25, and the output end of the motor 28 is fixedly connected to the top end of the second screw 27. A connecting rod 29 is fixedly mounted on the outside of the slider 26, and a welder 30 is fixedly mounted at the end of the connecting rod 29. The welder 30 is a resistance heater and is height-matched to the sealing strip material.

[0035] The output of motor 28 drives the second screw 27 to rotate, thereby causing the second screw 27 to drive the slider 26 to rise and fall, thus flexibly adjusting the position of the welder 30. It can be used in conjunction with the adjustment mechanism for flexible welding. After welding, the welder 30 can be lifted for flexible storage.

[0036] The above embodiments disclose an integrated device for hot-melt welding of automotive sealing strips. In this device, an electric cylinder 4 drives two connecting rods 5 to move synchronously, causing guide plates 6 to slide along an adjusting bracket 3, thereby controlling the lateral displacement of the mounting base 7. The mounting base 7, through the sliding engagement of guide rods 8 and limiting plates 9, ensures precise alignment of the mold cavity 20. When the output end of the electric cylinder 4 extends or retracts, the two guide plates 6 expand or contract synchronously, aligning the sealing strip in the mold cavity 20 to a preset position, providing a stable alignment basis for subsequent hot-melt welding.

[0037] The rocker arm 15 drives the first screw 14 to rotate, pushing the wedge block 13 to move laterally along the sliding groove. The pressing ramp of the wedge block 13 presses against the roller 18, forcing the pressure plate 17 to rotate around the rotating bracket 16, and the polyurethane layer at its end presses against the mold cavity 20. At the same time, the mold cavity 20 is slidably connected to the limiting bracket 19 through a dovetail tenon, achieving rapid positioning. After the cylinder 24 pushes the pressure module 23 to press the sealing strip, the adjusting mechanism drives the mold cavity 20 to close, and the welder 30 completes the hot melt welding under the control of the lifting mechanism. The dual fixing mechanism significantly improves the installation efficiency and stability of the mold cavity 20.

[0038] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An integrated device for hot-melt welding of automotive sealing strips, comprising: Workbench (1), support legs (2), adjustment mechanism and quick-assembly mechanism; the support legs (2) are fixedly installed at the bottom of the workbench (1), and the top of the workbench (1) is fixedly provided with an adjustment bracket (3). The feature is that: the bottom of the adjusting bracket (3) is fixedly provided with an adjusting mechanism for controlling the docking sealing strip; the top of the adjusting bracket (3) is fixedly provided with a quick-installation mechanism for quickly installing the mold cavity (20).

2. The integrated hot-melt welding device for automotive sealing strips according to claim 1, characterized in that, The adjustment mechanism includes an electric cylinder (4) fixedly mounted at the bottom of the adjustment bracket (3). The output end of the electric cylinder (4) is rotatably provided with two connecting rods (5). Two guide plates (6) are slidably mounted on the adjustment bracket (3). The ends of the two connecting rods (5) are rotatably connected to the two guide plates (6) respectively. The top of each guide plate (6) is fixedly provided with a mounting base (7). The outside of the mounting base (7) is fixedly provided with a guide rod (8). The top of the adjustment bracket (3) is fixedly provided with a limiting plate (9). The guide rod (8) is slidably connected to the limiting plate (9).

3. The integrated hot-melt welding device for automotive sealing strips according to claim 1, characterized in that, The quick-installation mechanism includes a mounting base (10) fixedly mounted on the top of the mounting base (7). A clamping bracket (11) is fixedly mounted on the top of the mounting base (10). A fixing plate (12) is fixedly mounted on the top of the clamping bracket (11). A wedge block (13) is slidably mounted on the top of the clamping bracket (11). A first screw (14) is rotatably mounted on the left side of the wedge block (13). The first screw (14) is threadedly connected to the fixing plate (12). A rocker arm (15) is fixedly mounted on the left end of the first screw (14). A rotating bracket (16) is fixedly mounted on the top of the clamping bracket (11). A pressure plate (17) is provided for rotation. A roller (18) adapted to the wedge block (13) is provided at the left end of the pressure plate (17). A limiting bracket (19) is fixedly provided at the top of the mounting base (10). A mold cavity (20) is provided on the inner wall of the limiting bracket (19). A sliding rod (21) is fixedly provided on the right side of the mold cavity (20). A mounting plate (22) is fixedly provided at the right end of the sliding rod (21). A pressure module (23) is slidably provided on the sliding rod (21). A cylinder (24) is fixedly provided on the right side of the mounting plate (22). The output end of the cylinder (24) is fixedly connected to the right side of the pressure module (23).

4. The integrated hot-melt welding device for automotive sealing strips according to claim 1, characterized in that, The top of the adjusting bracket (3) is fixedly equipped with a lifting mechanism for flexibly raising the welding.

5. The integrated hot-melt welding device for automotive sealing strips according to claim 4, characterized in that, The lifting mechanism includes a sliding bracket (25) fixedly mounted on the top of the adjusting bracket (3). A slider (26) is slidably mounted on the inner wall of the sliding bracket (25). A second screw (27) is rotatably mounted on the inner wall of the sliding bracket (25). The slider (26) and the second screw (27) are threadedly connected. A motor (28) is fixedly mounted on the top of the sliding bracket (25). The output end of the motor (28) is fixedly connected to the top end of the second screw (27). A connecting rod (29) is fixedly mounted on the outside of the slider (26). A welder (30) is fixedly mounted at the end of the connecting rod (29).

6. The integrated hot-melt welding device for automotive sealing strips according to claim 3, characterized in that, The top of the wedge block (13) is provided with a compression ramp adapted to the roller (18), and the top of the clamping bracket (11) is provided with a sliding groove adapted to the wedge block (13).

7. The integrated hot-melt welding device for automotive sealing strips according to claim 3, characterized in that, The end of the pressure plate (17) is provided with a polyurethane layer.

8. The integrated hot-melt welding device for automotive sealing strips according to claim 3, characterized in that, The inner wall of the limiting bracket (19) is provided with a dovetail tenon groove that is adapted to the mold cavity (20).

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