Automobile roof fabric welding device

Abstract

The utility model provides an automobile ceiling fabric welding device which comprises a rack, a positioning base used for placing and positioning a ceiling is arranged on the rack, a receding cavity corresponding to a skylight opening of the ceiling is formed in the middle of the positioning base, and a mounting plate and a lifting assembly used for driving the mounting plate to move up and down in the receding cavity are further arranged on the rack. A plurality of pressing assemblies corresponding to the hasps on the ceiling in position are arranged on the periphery of the mounting plate, the lower end of each pressing assembly is connected with a pressing block and a heating unit used for heating the pressing block, and the mounting plate is further provided with a translation assembly used for driving each pressing assembly to move inwards and outwards along the skylight opening; therefore, all the pressing assemblies are switched between the pressing position and the containing position. According to the automobile ceiling fabric welding device, automatic press fit of the hasps and the surface of the ceiling is achieved, press fit is stable, the hasps do not need to be preheated, working procedures are saved, and working efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of automotive roof processing equipment, and more specifically, to an automotive roof fabric welding device. Background Technology

[0002] With economic development, most households now own cars. As the car market continues to expand and people's understanding of cars changes, competition in the automotive industry has become increasingly fierce, especially in terms of the diversification of interior options.

[0003] As an interior component, the manufacturing process of the car headliner is particularly important. After the semi-finished injection-molded headliner is completed, an interior fabric layer needs to be laminated to its lower surface, and the ends of the headliner body and the sunroof opening area need to be edge-bound. Due to the special structure at the ends of the car headliner, the fabric overlaps at the corners after edge-bound. The overlapped fabric needs to be spliced ​​and fixed together. Currently, the most common method is to use ultrasonic welding to fix the overlapped fabric, ensuring the flatness of the entire fabric layer.

[0004] In existing technologies, there is no dedicated positioning fixture. Manual positioning of the car roof is required, moving it under the ultrasonic welding head, and then using a hand-held shovel to flatten the fabric at the welding points before welding. This entirely manual positioning method is not only time-consuming, labor-intensive, and inefficient, but also lacks accuracy, resulting in inconsistent positioning each time and poor uniformity of the welded car roof fabric. Utility Model Content

[0005] To overcome at least one of the defects in the prior art, this utility model provides a welding device for automotive roof fabric, which realizes automatic positioning of the automotive roof and product pressing of the fabric at the welding point, effectively improving work efficiency and ensuring that the welding point is consistent each time, and the fabric is flatter and more beautiful after welding.

[0006] The technical solution of this utility model is to provide a welding device for automotive headliner fabric: including a frame, a positioning component for placing and positioning the automotive headliner and a first pressing component for pressing the automotive headliner are provided on the worktable at the lower end of the frame, a lifting plate and a drive cylinder for driving the lifting plate to move up and down are connected to the top plate of the frame, and a second pressing component for pressing against the upper surface of the automotive headliner, a pressing component for flattening and pressing the spliced ​​fabric at the welding point, and an ultrasonic welding component for welding the flattened and pressed fabric.

[0007] Compared with the prior art, the automotive headliner fabric welding device of this utility model has the following advantages:

[0008] This utility model relates to a specialized tooling device for welding automotive roof fabric. It achieves initial positioning of the automotive roof by setting positioning components on the worktable of the frame. The pressing and clamping components then flatten and press the fabric to be welded at multiple locations on the roof, ensuring the flatness of the fabric at each welding point. Next, secondary pressing components press and limit the fabric at the upper end of the roof, achieving secondary positioning and further ensuring the stability of the roof's position. Finally, ultrasonic welding components on the lifting plate perform ultrasonic welding on the corresponding positions of the fabric on the roof, making the fabric at those positions tighter and more aesthetically pleasing. The entire welding process requires no manual intervention, and the fabric at the welding points is automatically pressed, improving work efficiency and ensuring a flat and aesthetically pleasing weld surface.

[0009] Furthermore, the positioning component includes multiple positioning base blocks distributed circumferentially, and the upper surface of each positioning base block is provided with an arc-shaped surface that matches the shape of the car roof; each positioning base block corresponding to the part of the preset through hole on the car roof is also provided with an outwardly protruding positioning insert, and the positioning insert is inserted into the through hole.

[0010] Furthermore, the first pressing assembly includes two sets of tilting cylinders disposed on the left and right sides of the positioning assembly. Each set of tilting cylinders includes two cylinders spaced apart from each other, and each tilting arm of the tilting cylinder is connected to a tilting block for pressing against the upper surface of the car roof.

[0011] Furthermore, each of the second pressing components includes two columns spaced apart along the front and rear of the frame. The upper end of each column is connected to the lifting plate, and the bottom of each column is connected to a vertical pressing block for pressing and limiting the upper surface of the car roof.

[0012] Furthermore, the lifting plate includes a first plate and a second plate located above the left and right ends of the car roof. Two drive cylinders are connected to the roof plate to drive the first plate and the second plate to lift respectively. Vertically extending first guide rods are respectively provided at the left and right ends of the frame and between the roof plate and the worktable. The ends of the first plate and the second plate that are far apart are provided with first guide sleeves that slide in cooperation with the corresponding first guide rods.

[0013] As an improvement, two second guide rods are connected to the upper end surfaces of the first plate and the second plate that are close to each other. Four second guide sleeves are provided on the top plate of the frame. The upper ends of the four second guide rods are slidably engaged in the four second guide sleeves. An upper limit rod is connected to the lower end surface of the first plate and the second plate that are close to each other. A lower limit rod corresponding to each upper limit rod is provided on the worktable.

[0014] In a further improvement, ultrasonic welding components are provided on both the first and second plates at positions corresponding to the areas of the car roof fabric to be welded. Each ultrasonic welding component includes an ultrasonic generator, a transducer, and a welding head. The ultrasonic generator is connected to the first and second plates respectively, and a connecting rod is connected to both the first and second plates. The lower end of each connecting rod is connected to a first slide cylinder. Each transducer is connected to the slide plate of the corresponding first slide cylinder and is electrically connected to the corresponding ultrasonic generator. Each welding head is connected to one end of the corresponding transducer.

[0015] In a further improvement, the worktable is provided with multiple scraping and pressing components that correspond one-to-one with each ultrasonic welding component. Each scraping and pressing component includes a second slide cylinder and a scraping and pressing plate. Each second slide cylinder is connected to the worktable, and each scraping and pressing plate is connected to the slide plate of the corresponding second slide cylinder. The lower part of the free end of each scraping and pressing plate is provided with a shaped curved surface that is recessed. The free end of each scraping and pressing plate is also provided with a clearance through hole at the position corresponding to the preset welding point for the corresponding welding head to pass through.

[0016] The aforementioned improvements and advantages of this invention will be set forth in detail in the following specific embodiments, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention can be realized and obtained through the structures particularly pointed out in the description and drawings. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the automotive roof fabric welding device of this utility model (roof installation).

[0018] Figure 2 This is a three-dimensional structural view of the automotive roof fabric welding device of this utility model from another angle (without the roof installed).

[0019] Figure 3 This utility model relates to the positioning structure and welding assembly structure of the car roof at the left end of the frame.

[0020] Figure 4 for Figure 3 Enlarged structural diagram at point X in the diagram;

[0021] Figure 5 This utility model relates to the positioning structure and welding assembly structure of the car roof at the right end of the frame.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Workbench; 2. Drive cylinder; 3. Positioning base block; 4. Positioning insert block; 5. Tilting cylinder; 6. Tilting pressure block; 7. Column; 8. Vertical pressure block; 9. First plate; 10. Second plate; 11. First guide rod; 12. First guide sleeve; 13. Second guide rod; 14. Second guide sleeve; 15. Upper limit rod; 16. Lower limit rod; 17. Ultrasonic generator; 18. Transducer; 19. Welding head; 20. Connecting rod; 21. First slide cylinder; 22. Second slide cylinder; 23. Shovel pressure plate; 24. Clearance through hole; Detailed Implementation

[0024] First, those skilled in the art should understand that these embodiments are merely used to explain the technical principles of the embodiments of this application and are not intended to limit the scope of protection of the embodiments of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0025] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "fixed" and "connected" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0026] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0027] See Figures 1-5 As shown in the figure, this application discloses an automotive headliner fabric welding device, including a frame. The frame includes a rectangular worktable 1, with support columns 7 at each of the four corners of the worktable 1. A top plate is connected to the top of the support columns 7. The worktable 1 is provided with a positioning component for placing and positioning the automotive headliner and a first pressing component for pressing the automotive headliner. A lifting plate and a drive cylinder 2 for driving the lifting plate to move up and down are connected to the top plate. In addition, a second pressing component for pressing against the upper surface of the automotive headliner, a scraping and pressing component for flattening and pressing the fabric at the welding point, and an ultrasonic welding component for welding the flattened and pressed fabric are connected to both ends of the lifting plate.

[0028] Working principle: The car roof is placed onto the positioning components by a manual or robotic arm. The first clamping component performs initial positioning of the car roof, while the scraping component performs flattening and clamping of multiple areas of the fabric to be welded on the car roof, ensuring the flatness of the fabric at each welding point. Then, the drive cylinder 2 drives the lifting plate to descend until the second clamping components are pressed and limited at the upper end of the car roof, achieving secondary positioning and further ensuring the stability of the car roof's position. Finally, the ultrasonic welding components on the lifting plate perform ultrasonic welding on the corresponding areas of the fabric on the car roof, making the fabric at those locations tighter and more aesthetically pleasing.

[0029] In this embodiment, more specifically, the positioning component includes multiple positioning base blocks 3 distributed circumferentially. Each positioning base block 3 is connected to the upper surface of the workbench 1 via a connecting seat, and the upper surface of each positioning base block 3 is provided with an arc-shaped surface that matches the shape of the car roof, thereby ensuring that the car roof is positioned stably and stably after placement. Furthermore, since some pre-reserved through holes are reserved at corresponding positions on the car roof, in order to better ensure the stability of the car roof after positioning, these pre-reserved through holes are utilized in this embodiment. That is, the positioning base block 3 corresponding to the positions of the pre-reserved through holes on the car roof is also provided with protruding positioning inserts 4. When the car roof is placed on the positioning component, each positioning insert 4 is inserted and fitted with the corresponding through hole, further improving the stability of the car roof position and making it less prone to deviation during welding.

[0030] On the other hand, in this embodiment, the first pressing component includes two sets of flipping cylinders 5 arranged on the left and right sides of the positioning component. Each set of flipping cylinders 5 includes two cylinders arranged at intervals, and each flipping arm of the flipping cylinder 5 is connected to a flipping block 6 for pressing against the upper surface of the car roof.

[0031] On the other hand, each of the second clamping components includes two columns 7 spaced apart along the front and rear of the frame. The upper end of each column 7 is connected to the lifting plate, and the bottom of each column 7 is connected to a vertical clamping block 8 for clamping and limiting the upper surface of the car roof. In this embodiment, preferably, the lifting plate includes two independent plates, namely a first plate 9 and a second plate 10, and the two plates are located above the left and right ends of the car roof, respectively. Correspondingly, two drive cylinders 2 are connected to the top plate for driving the first plate 9 and the second plate 10 to rise and fall, respectively.

[0032] In addition, to ensure the stability of the lifting and lowering of the two plates, vertically extending first guide rods 11 are respectively installed at the left and right ends of the frame and between the top plate and the worktable 1. First guide sleeves 12, which slide in cooperation with the corresponding first guide rods 11, are installed at the ends of the first plate 9 and the second plate 10 that are furthest apart. Furthermore, two second guide rods 13, spaced apart front to back, are connected to the upper surface of the side of the first plate 9 and the second plate 10 that are close to each other. Four second guide sleeves 14 are installed on the top plate of the frame, and the upper ends of the four second guide rods 13 slide in cooperation with the four second guide sleeves 14. In this structure, the first plate 9, the second plate 10, and the top plate each have four sliding positioning mechanisms, effectively ensuring the stability during lifting and lowering. Furthermore, an upper limit rod 15 is connected to the lower end face of the first plate 9 and the second plate 10 on the side close to each other. The worktable 1 is provided with a lower limit rod 16 corresponding to each upper limit rod 15. When the first plate 9 and the second plate 10 descend to the limit position, the upper limit rod 15 and the corresponding lower limit rod 16 abut against each other to limit the movement, so as to avoid the vertical pressure block 8 from damaging the fabric due to excessive descent.

[0033] In this embodiment, ultrasonic welding components are provided on the first plate 9 and the second plate 10 at positions corresponding to the areas to be welded on the car roof fabric. Specifically, welding points are provided on both the front and back ends of the roof, resulting in a total of four welding points and four ultrasonic welding components. Each ultrasonic welding component includes an ultrasonic generator 17, a transducer 18, and a welding head 19. The ultrasonic generator 17 is connected to the first plate 9 and the second plate 10, and connecting rods 20 are connected to both the first plate 9 and the second plate. The lower end of each connecting rod 20 is connected to a first slide cylinder 21. Each transducer 18 is connected to the slide plate of the corresponding first slide cylinder 21 and is electrically connected to the corresponding ultrasonic generator 17. Each welding head 19 is connected to one end of the corresponding transducer 18. In this structure, the first slide cylinder 21 is used to adjust the horizontal displacement of the welding head 19; furthermore, a rotating platform is connected to the lower end of each connecting rod 20, and the first slide cylinder 21 is rotatably connected to the rotating platform to achieve multi-dimensional adjustment of the welding head 19 and ensure the accuracy of the welding position.

[0034] In addition, each of the four ultrasonic welding components corresponds to a different component. Each component has the same structure, including a second slide cylinder 22 and a pressing plate 23. Each second slide cylinder 22 is connected to the worktable 1, and each pressing plate 23 is connected to the slide plate of the corresponding second slide cylinder 22. The lower part of the free end of each pressing plate 23 has a concave, shaped curved surface to ensure the car roof fabric is pressed flat. Furthermore, the free end of each pressing plate 23, corresponding to the preset welding point, is provided with a clearance through hole 24 for the corresponding welding head 19 to pass through. With this configuration, during welding by the welding head 19, the pressing plate 23 remains pressed firmly against the spliced ​​fabric, ensuring the tightness and flatness of the fabric at the weld. After welding at each point is completed, each mechanism resets, and the car roof is removed manually or by a robotic arm.

[0035] 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. A welding device for automotive headliner fabric, characterized in that: The machine includes a frame, and a positioning component for placing and positioning the car roof and a first pressing component for pressing the car roof are provided on the worktable (1) at the lower end of the frame. A lifting plate and a drive cylinder (2) for driving the lifting plate to move up and down are connected to the top plate of the frame. The left and right ends of the lifting plate are connected to a second pressing component for pressing against the upper surface of the car roof, a pressing component for flattening and pressing the spliced ​​fabric at the welding point, and an ultrasonic welding component for welding the flattened and pressed fabric.

2. The automotive headliner fabric welding device according to claim 1, characterized in that: The positioning component includes multiple positioning base blocks (3) distributed circumferentially. The upper surface of each positioning base block (3) is provided with an arc-shaped surface that matches the shape of the car roof. Each positioning base block (3) corresponding to the part of the preset through hole on the car roof is also provided with a protruding positioning insert (4), and the positioning insert (4) is inserted into the through hole.

3. The automotive headliner fabric welding device according to claim 1, characterized in that: The first pressing assembly includes two sets of tilting cylinders (5) arranged on the left and right sides of the positioning assembly. Each set of tilting cylinders (5) includes two cylinders arranged at a distance from front to back, and each tilting arm of the tilting cylinder (5) is connected to a tilting block (6) for pressing against the upper surface of the car roof.

4. The automotive headliner fabric welding device according to claim 1 or 3, characterized in that: Each of the second pressing components includes two columns (7) spaced apart along the front and rear of the frame. The upper end of each column (7) is connected to the lifting plate, and the bottom of each column (7) is connected to a vertical pressing block (8) for pressing and limiting the upper surface of the car roof.

5. The automotive headliner fabric welding device according to claim 1, characterized in that: The lifting plate includes a first plate (9) and a second plate (10) located above the left and right ends of the car roof. Two drive cylinders (2) are connected to the top plate to drive the first plate (9) and the second plate (10) to lift respectively. The left and right ends of the frame and between the top plate and the worktable (1) are respectively provided with vertically extending first guide rods (11). The ends of the first plate (9) and the second plate (10) that are far apart are provided with first guide sleeves (12) that slide in cooperation with the corresponding first guide rods (11).

6. The automotive headliner fabric welding device according to claim 5, characterized in that: Two second guide rods (13) are connected to the upper end surfaces of the first plate (9) and the second plate (10) on the side of each other. Four second guide sleeves (14) are provided on the top plate of the frame. The upper ends of the four second guide rods (13) are respectively slidably fitted in the four second guide sleeves (14). An upper limit rod (15) is connected to the lower end surface of the first plate (9) and the second plate (10) on the side of each other. A lower limit rod (16) is provided on the worktable (1) that corresponds one-to-one with each upper limit rod (15).

7. The automotive headliner fabric welding device according to claim 5, characterized in that: The ultrasonic welding assembly is provided on the first plate (9) and the second plate (10) at the position corresponding to the welding point of the car roof fabric. Each ultrasonic welding assembly includes an ultrasonic generator (17), a transducer (18) and a welding head (19). The ultrasonic generator (17) is connected to the first plate (9) and the second plate (10). A connecting rod (20) is connected to the first plate (9) and the second plate. The lower end of each connecting rod (20) is connected to a first slide cylinder (21). Each transducer (18) is connected to the slide plate of the corresponding first slide cylinder (21) and is electrically connected to the corresponding ultrasonic generator (17). Each welding head (19) is connected to one end of the corresponding transducer (18).

8. The automotive headliner fabric welding device according to claim 7, characterized in that: The workbench (1) is provided with a plurality of shovel pressing components corresponding to each ultrasonic welding component. Each shovel pressing component includes a second slide cylinder (22) and a shovel pressing plate (23). Each second slide cylinder (22) is connected to the workbench (1), and each shovel pressing plate (23) is connected to the slide plate of the corresponding second slide cylinder (22). The free end of each shovel pressing plate (23) is recessed below a shaped curved surface. The free end of each shovel pressing plate (23) is also provided with a clearance through hole (24) for the corresponding welding head (19) to pass through at the position corresponding to the preset welding point.

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