Ultrasonic compounding equipment for processing automobile interior fabric

Abstract

The utility model relates to the field of automobile fabric processing equipment, and discloses and provides ultrasonic compound equipment for automobile interior fabric processing, which comprises an ultrasonic welding head, a bearing roller is arranged below the ultrasonic welding head, the fabric is conveyed from back to front, a material receiving roller is arranged on the front side of the bearing roller, and the material receiving roller is arranged on the back side of the bearing roller. A plurality of discharging rollers are arranged on the rear side of the bearing roller and comprise the first conveying roller used for outputting the surface fabric, the second conveying roller used for outputting the solid adhesive film and the third conveying roller used for outputting the sponge. And the surface fabric, the adhesive film and the sponge are overlapped and compounded into a whole between the bearing roller and the ultrasonic welding head and are wound through the material receiving roller after being output. According to the utility model, the solid adhesive film is quickly fused under the action of the ultrasonic welding head, so that the welding time is shortened, the thickness of the surface fabric or sponge at the welding part is basically kept unchanged, and the compounded multi-layer fabric is kept flat and attractive.

Description

Technical Field

[0001] This utility model relates to automotive fabric processing equipment, and more particularly to an ultrasonic composite equipment for processing automotive interior fabrics. Background Technology

[0002] Current automotive interior fabric lamination methods mainly include flame lamination, hot melt adhesive lamination, powder lamination, and flat panel lamination. Among these, flame lamination has disadvantages such as high energy consumption, high emissions, and the acidic gases produced during combustion are harmful to human health and the environment. Hot melt adhesive lamination, powder lamination, and flat panel lamination also have high energy consumption, and the adhesive between the fabrics needs to be kept in a molten state, making temperature control difficult.

[0003] Ultrasonic welding is also used, mostly for welding specific areas of multiple layers of material. All the materials being welded reach a molten state under high pressure and vibration. Outside of these welded areas, the materials lack bonding strength, and the effective welded area is flattened, creating an appearance similar to that formed by sewing. For example, continuous ultrasonic welding can be used to join the edges of multiple layers of non-woven fabric, such as in diapers, sanitary napkins, and masks. Alternatively, embossing can be used, engraving patterns, such as brand logos, onto rollers, and then continuous ultrasonic welding is used to create patterns on the fabric surface.

[0004] Therefore, a method is needed to ensure that the thickness of the surface fabric or sponge at the welded area remains basically unchanged, so that the composite multilayer fabric remains flat and aesthetically pleasing. Summary of the Invention

[0005] This invention addresses the shortcomings of existing technologies by providing an ultrasonic composite device for processing automotive interior fabrics.

[0006] To solve the above-mentioned technical problems, this utility model achieves its solution through the following technical solution:

[0007] An ultrasonic laminating device for processing automotive interior fabrics includes an ultrasonic welding head, with a support roller positioned below the welding head. The fabric is conveyed from back to front. A take-up roller is positioned in front of the support roller, and several feed rollers are positioned behind it. The feed rollers include a first feed roller for outputting the outer fabric, a second feed roller for outputting a solid adhesive film, and a third feed roller for outputting a sponge. The first, second, and third feed rollers are arranged sequentially from top to bottom. The outer fabric, adhesive film, and sponge are stacked and laminated together between the support roller and the ultrasonic welding head, and then output and wound up by the take-up roller. The ultrasonic vibration of the ultrasonic welding head only acts on the adhesive film and theoretically has no effect on the sponge. Due to the low conductivity of the sponge material, heat does not concentrate in the sponge, so there is no damage. Furthermore, because the sponge itself is soft and elastic, it will not undergo irreversible deformation under very short heating. The properties of the adhesive film allow it to melt rapidly under ultrasonic waves without relying on pressure, preventing the sponge from being flattened by continuous pressure.

[0008] As the adhesive film melts, its thickness decreases, providing some space for the surface material and sponge to compress when the ultrasonic welding head applies pressure. This ensures that the sponge is compressed less and rebounds quickly, thereby achieving the goal of smoothing the composite material.

[0009] As a preferred option, the support roller is a smooth roller. The smooth roller will not leave any embossing marks on the fabric surface. The roller body has a high degree of flatness and smoothness. The choice of materials and processing methods also ensures flatness and concentricity, so that there are no embossing marks on the final laminated fabric.

[0010] Preferably, the ultrasonic welding head has at least one flat welding section, the surface of which is tangent to the surface of the support roller, and the outer side of the ultrasonic welding head is provided with an arc-shaped connecting section.

[0011] Preferably, the adhesive film on the second conveyor roller is solid before passing through the ultrasonic welding head.

[0012] Preferably, the outer fabric and the sponge are fixedly connected by a molten adhesive film after passing through an ultrasonic welding head.

[0013] Preferably, a composite pressure roller is also included. The composite pressure roller is located on the fabric conveying path to change its conveying direction. The composite pressure roller is set behind the support roller. The outer fabric, film, and sponge are stacked above the composite pressure roller before being conveyed to the support roller. The lowest position of the composite pressure roller is lower than the highest position of the support roller.

[0014] Preferably, a tension roller is also included, which is located between the take-up roller and the support roller, with the lowest position of the tension roller being lower than the highest position of the support roller.

[0015] Preferably, the adhesive film is a TPU hot melt adhesive film or a PA hot melt adhesive web.

[0016] This utility model, by adopting the above technical solution, has significant technical effects:

[0017] A method is provided that utilizes a solid adhesive film to rapidly melt under the action of an ultrasonic welding head, shortening the welding time and keeping the thickness of the surface fabric or sponge at the welding point essentially unchanged, thus ensuring that the composite multilayer fabric remains flat and aesthetically pleasing.

[0018] This technology solves the problem of lack of bonding between welded materials outside the welded area in existing technologies, enabling the ultrasonic welding head to achieve 100% effective welding area and complete adhesion between the welded fabrics. 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 structure of the support roller of this utility model, which is a smooth roller.

[0021] Figure 3 This is a schematic diagram of the structure of an ultrasonic welding head.

[0022] The parts referred to by the numbers in the above attached figures are as follows: 1. Ultrasonic welding head; 21. Outer fabric; 22. Adhesive film; 23. Sponge; 3. Support roller; 4. Take-up roller; 51. First conveyor roller; 52. Second conveyor roller; 53. Third conveyor roller; 6. Composite pressure roller; 7. Tensioning roller. Detailed Implementation

[0023] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. Example

[0024] An ultrasonic laminating device for processing automotive interior fabrics, such as Figure 1 As shown, the assembly includes an ultrasonic welding head 1, with a support roller 3 positioned below it. The fabric is conveyed from back to front. A take-up roller 4 is positioned in front of the support roller 3, and several feed rollers are positioned behind it. The feed rollers include a first conveying roller 51 for outputting the outer fabric 21, a second conveying roller 52 for outputting the solid adhesive film 22, and a third conveying roller 53 for outputting the sponge 23. The first conveying roller 51, the second conveying roller 52, and the third conveying roller 53 are arranged sequentially from top to bottom. The outer fabric 21, the adhesive film 22, and the sponge 23 are stacked and composited between the support roller 3 and the ultrasonic welding head 1, and then output and wound up by the take-up roller 4. The ultrasonic vibration of the ultrasonic welding head 1 acts only on the adhesive film 22, causing it to melt and thin, providing space for the outer fabric 21 and the sponge 23 to compress when the ultrasonic welding head 1 applies pressure. The sponge 23 rebounds after compression, making the composite material flat.

[0025] like Figure 2 As shown, the support roller 3 is a smooth roller with a smooth surface.

[0026] like Figure 3 As shown, the ultrasonic welding head 1 has at least one flat welding section 11, the surface of the welding section 11 is tangent to the surface of the support roller 3, and the outer side of the ultrasonic welding head 1 is provided with an arc-shaped connecting section 12.

[0027] The adhesive film 22 of the second conveying roller 52 is solid before passing through the ultrasonic welding head 1.

[0028] The outer fabric 21 and the sponge 23 are fixedly connected by the molten adhesive film 22 after passing through the ultrasonic welding head 1.

[0029] It also includes a composite pressure roller 6, which is located on the fabric conveying path to change its conveying direction. The composite pressure roller 6 is set behind the support roller 3. The outer fabric 21, the adhesive film 22, and the sponge 23 are stacked on top of the composite pressure roller 6 before being conveyed to the support roller 3. The lowest position of the composite pressure roller 6 is lower than the highest position of the support roller 3.

[0030] It also includes a tension roller 7, which is located between the take-up roller 4 and the support roller 3, with the lowest position of the tension roller 7 being lower than the highest position of the support roller 3.

[0031] The adhesive film 22 is a TPU hot melt adhesive film or a PA hot melt adhesive web. This material can melt rapidly under ultrasound without relying on pressure, preventing the sponge from being flattened by continuous pressure. Other materials with this property that are easily conceived by those skilled in the art can also be used for the adhesive film 22, which will not be described in detail here.

[0032] The upper outer fabric 21, the adhesive film 22, and the lower sponge 23 are stored and conveyed forward on the first conveying roller 51, the second conveying roller 52, and the third conveying roller 53, respectively. The conveyed three layers of material pass above the composite pressure roller 6, which provides a certain tension to ensure contact between the three layers of fabric. This ensures that the fabric is already folded before reaching the ultrasonic welding head 1. Then, the folded three layers of fabric enter between the ultrasonic welding head 1 and the support roller 3 for lamination.

[0033] In this design, the welding section 11 of the ultrasonic welding head 1 is tangential to the support roller 3. During fabric lamination, it applies pressure to the outer fabric 21, the adhesive film, and the sponge, ensuring uniform pressure application. High-frequency ultrasonic vibration generates heat in the adhesive film 22 between the laminated components. The instantaneous pressure and heat melt the adhesive film 22 without significantly affecting the outer fabric 21 or the sponge, such as flattening the sponge 23 or burning the outer fabric 21. The curved connecting section 12 prevents fabric jamming during transport.

[0034] The composite fabric appears to have two layers on the surface and is wound up and recycled by tension roller 7 and take-up roller 4.

[0035] In the description of this utility model, it should be understood that the terms "center," "length," "width," "thickness," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0036] In summary, the above description is only a preferred embodiment of the present utility model. All equivalent changes and modifications made within the scope of the patent application of the present utility model shall fall within the scope of the patent of the present utility model.

Claims

1. An ultrasonic composite equipment for processing automotive interior fabrics, comprising an ultrasonic welding head (1), a support roller (3) disposed below the ultrasonic welding head (1), and the fabric being conveyed in a back-to-forehead direction, characterized in that: A take-up roller (4) is provided on the front side of the support roller (3), and several feed rollers are provided on the rear side of the support roller (3). The feed rollers include a first conveying roller (51) for outputting the outer fabric (21), a second conveying roller (52) for outputting the solid adhesive film (22), and a third conveying roller (53) for outputting the sponge (23). The first conveying roller (51), the second conveying roller (52), and the third conveying roller (53) are arranged sequentially from top to bottom. The outer fabric (21), the adhesive film (22), and the sponge (23) are stacked and composited between the support roller (3) and the ultrasonic welding head (1) and output as a whole. They are then wound up by the take-up roller (4). The ultrasonic vibration of the ultrasonic welding head (1) acts on the adhesive film (22), which melts and thins out, providing space for the outer fabric (21) and the sponge (23) to be compressed when the ultrasonic welding head (1) applies pressure. The sponge (23) rebounds after compression, making the composite material flat.

2. The ultrasonic composite equipment for processing automotive interior fabrics according to claim 1, characterized in that: The support roller (3) is a smooth roller with a smooth surface.

3. The ultrasonic composite equipment for processing automotive interior fabrics according to claim 2, characterized in that: The ultrasonic welding head (1) has at least one flat welding section (11), the surface of the welding section (11) is tangent to the surface of the support roller (3), and the outer side of the ultrasonic welding head (1) is provided with an arc-shaped connecting section (12).

4. The ultrasonic composite equipment for processing automotive interior fabrics according to claim 1, characterized in that: The adhesive film (22) of the second conveying roller (52) is solid before passing through the ultrasonic welding head (1).

5. An ultrasonic composite device for processing automotive interior fabrics according to claim 1, characterized in that: The outer fabric (21) and the sponge (23) are fixedly connected by the molten adhesive film (22) after passing through the ultrasonic welding head (1).

6. The ultrasonic composite equipment for processing automotive interior fabrics according to claim 1, characterized in that: It also includes a composite pressure roller (6), which is located on the fabric conveying path to change its conveying direction. The composite pressure roller (6) is set behind the support roller (3). The outer fabric (21), adhesive film (22), and sponge (23) are stacked above the composite pressure roller (6) before being conveyed to the support roller (3). The lowest position of the composite pressure roller (6) is lower than the highest position of the support roller (3).

7. An ultrasonic composite equipment for processing automotive interior fabrics according to claim 1, characterized in that: It also includes a tension roller (7), which is located between the take-up roller (4) and the support roller (3), with the lowest position of the tension roller (7) lower than the highest position of the support roller (3).

8. An ultrasonic composite equipment for processing automotive interior fabrics according to claim 1, characterized in that: The adhesive film (22) is a TPU hot melt adhesive film or a PA hot melt adhesive mesh.

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