Ultrasonic welding device for leather pressing strip

Abstract

The utility model relates to an ultrasonic welding device of a leather pressing strip, which is used for welding leather and a plastic part, the leather and the plastic part are mutually overlapped to form a to-be-welded main body, the device comprises an ultrasonic welding head, a quick chuck and a bottom die, the bottom die is provided with a welding groove matched with the to-be-welded main body in shape, and the ultrasonic welding head is arranged in the welding groove. The quick chucks are installed on the bottom die, located at the two ends of the welding groove and matched with the two ends of the main body to be welded in position. The ultrasonic welding head is assembled on ultrasonic equipment and located above the welding groove, and a plurality of welding blocks extending along the to-be-welded area of the to-be-welded body are arranged at the bottom of the ultrasonic welding head. Compared with the prior art, the leather and plastic part welding device has the advantages of improving the welding efficiency of leather and plastic parts, saving the welding cost, improving the welding quality and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of component welding, in particular to an ultrasonic welding device for leather pressure strips. Background Art

[0002] Ultrasonic welding of automobile parts is a conventional assembly process, and is currently used in the assembly of automobile interior parts. The general and simple method for welding leather and plastic parts is to perform spot welding with a handheld ultrasonic welding head, such as the ultrasonic welding device with gap compensation function disclosed in the utility model with publication number CN117182283A, whose welding head 4 is a columnar structure and can only achieve spot welding.

[0003] The disadvantages of this method are that manual welding is slow and requires point-by-point welding, and the welding quality cannot be guaranteed. Utility Model Content

[0004] The purpose of the utility model is to provide an ultrasonic welding device for leather strips in order to overcome the defects of the prior art that manual welding is slow in efficiency, welding is required point by point, and welding quality cannot be guaranteed.

[0005] The purpose of the utility model can be achieved through the following technical solutions:

[0006] An ultrasonic welding device for leather strips is used for welding leather and plastic parts. The leather and plastic parts overlap each other to form a main body to be welded. The device includes an ultrasonic welding head, a quick clamp and a bottom mold. The bottom mold is provided with a welding groove matching the shape of the main body to be welded. The quick clamp is installed on the bottom mold, located at both ends of the welding groove, and matches the positions of the two ends of the main body to be welded; the ultrasonic welding head is assembled on the ultrasonic equipment and located above the welding groove. The bottom of the ultrasonic welding head is provided with a plurality of welding blocks extending along the to-be-welded area of ​​the main body to be welded.

[0007] Furthermore, the area to be welded is in the shape of an elongated strip, the cross section of the ultrasonic welding head is in the shape of a rectangle matching the area to be welded, and each of the welding blocks is sequentially fixed on the bottom surface of the ultrasonic welding head.

[0008] Furthermore, the plastic part is provided with a plurality of raised connecting blocks, the leather is correspondingly provided with a plurality of through holes corresponding one-to-one to the raised connecting blocks, and the welding blocks corresponding to the raised connecting blocks are provided with rectangular grooves matching with the raised connecting blocks.

[0009] Furthermore, the contact end of the welding block and the body to be welded is provided with a plurality of V-shaped grooves evenly distributed longitudinally, and a trapezoidal protrusion is formed between two adjacent V-shaped grooves.

[0010] Furthermore, the overall shape of the body to be welded is U-shaped, and the bottom mold is also provided with a left outer positioning block and a right outer positioning block located on both sides of the body to be welded, and the left outer positioning block and the right outer positioning block are both fixed on the bottom mold.

[0011] Furthermore, a chuck support seat is also provided on the bottom die, and the quick chuck is installed on the bottom die through the chuck support seat.

[0012] Furthermore, the top of the chuck support seat on the bottom mold is stepped, forming a high step surface and a low step surface, the quick chuck is installed on the high step surface, and the low step surface matches the end height of the body to be welded to support the end of the body to be welded.

[0013] Furthermore, the device also includes an inner positioning block, which is installed on the low step surface of the chuck support seat and abuts against the inner side of the end of the body to be welded.

[0014] Furthermore, a protruding connection block is provided at the end of the plastic component and faces the entire inner side of the plastic component, and the inner positioning block is provided with a clamping groove that matches the protruding connection block.

[0015] Furthermore, there are two quick clamps, which are respectively located at two ends of the body to be welded.

[0016] Compared with the prior art, the utility model has the following advantages:

[0017] (1) In view of the defect that the existing solution requires a handheld ultrasonic welding head for spot welding, which affects the efficiency, the utility model proposes to set an ultrasonic welding head of a corresponding shape according to the shape of the area to be welded of the leather and plastic parts, and to set a plurality of welding blocks at the bottom of the ultrasonic welding head, covering the entire area to be welded; and to set a welding groove matching the shape of the leather and plastic parts, and a quick clamp for fixing the two ends of the leather and plastic parts, so as to achieve product fixation. By lowering and pressing the entire ultrasonic welding head onto the surface of the leather and plastic parts, the entire welding can be performed, which greatly improves the welding efficiency and ensures the welding quality;

[0018] Improve efficiency overall: reduce labor intensity of operators, improve efficiency by 1 / 3, and increase output per shift;

[0019] Cost saving: reduced labor costs;

[0020] Improve quality: equipment welding, product quality is guaranteed.

[0021] (2) In view of the situation where a plurality of raised connecting blocks are provided on a plastic part, the utility model sets a corresponding welding block with a rectangular groove that matches with the raised connecting block to achieve matching with the plastic part without affecting the welding process; and sets a V-shaped groove at the contact end between the welding block and the main body to be welded to provide a welding buffer area to ensure the welding quality.

[0022] (3) The utility model provides a left outer positioning block, a right outer positioning block, an inner positioning block and a clamping groove on the inner positioning block on the bottom mold, which cooperates with a quick chuck to achieve overall stable fixation of the leather and plastic parts, making them less likely to move, thereby ensuring the stability of the welding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of an ultrasonic welding device for leather layering provided in an embodiment of the utility model;

[0024] Figure 2 This is a schematic diagram of the structure of an ultrasonic welding head provided in an embodiment of the utility model;

[0025] Figure 3 for Figure 2 A magnified schematic diagram of the local structure;

[0026] Figure 4 This is a schematic structural diagram of making a bottom mold and an ultrasonic welding head transparent in an ultrasonic welding device for a leather layer provided in an embodiment of the utility model;

[0027] Figure 5 for Figure 4 A partial enlarged schematic diagram of

[0028] In the figure, 1, ultrasonic welding head, 11, welding block, 111, rectangular groove, 112, V-shaped groove, 113, trapezoidal protrusion, 2, quick clamp, 3, plastic part, 301, protruding connecting block, 4, bottom mold, 401, welding groove, 5, leather, 6, left outer positioning block, 7, right outer positioning block, 8, clamp support seat, 9, inner positioning block, 901, clamping groove. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0032] In the description of the present utility model, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model.

[0033] It should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0034] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0035] Example 1

[0036] like Figure 1 As shown, this embodiment provides an ultrasonic welding device for leather strips, which is used to weld leather 5 and plastic parts 3. The leather 5 and plastic parts 3 overlap each other to form a main body to be welded. The device includes an ultrasonic welding head 1, a quick clamp 2 and a bottom mold 4. The bottom mold 4 is provided with a welding groove 401 that matches the shape of the main body to be welded. The quick clamp 2 is installed on the bottom mold 4, located at both ends of the welding groove 401, and matches the positions of the two ends of the main body to be welded; the ultrasonic welding head 1 is assembled on the ultrasonic equipment and is located above the welding groove 401. The bottom of the ultrasonic welding head 1 is provided with a plurality of welding blocks 11 extending along the to-be-welded area of ​​the main body to be welded.

[0037] In this embodiment, the area to be welded is in the shape of a long strip, the cross section of the ultrasonic welding head 1 is a rectangle matching the area to be welded, and each welding block 11 is fixed on the bottom surface of the ultrasonic welding head 1 in sequence.

[0038] Working principle: In view of the defect of the existing solution that a handheld ultrasonic welding head 1 is required for spot welding, which affects the efficiency, this solution proposes to set an ultrasonic welding head 1 of a corresponding shape according to the shape of the area to be welded of the leather 5 and the plastic part 3, and a plurality of welding blocks 11 are set at the bottom of the ultrasonic welding head 1 to cover the entire area to be welded; and a welding groove 401 matching the shape of the leather 5 and the plastic part 3, as well as a quick clamp 2 for fixing the two ends of the leather 5 and the plastic part 3 are set to fix the product. By lowering and pressing the overall ultrasonic welding head 1 onto the surface of the leather 5 and the plastic part 3, overall welding can be performed, which greatly improves the welding efficiency and ensures the welding quality.

[0039] like Figure 2 As shown, in order to address the problem that there may be multiple protruding connecting blocks 301 on the plastic part 3, which makes crimping welding inconvenient, the leather 5 is provided with multiple through holes corresponding to the protruding connecting blocks 301 one by one, and the welding block 11 corresponding to the protruding connecting block 301 is provided with a rectangular groove 111 matching the protruding connecting block 301.

[0040] In this solution, in view of the situation where a plurality of raised connection blocks 301 are provided on the plastic part 3, the corresponding welding block 11 is provided with a rectangular groove 111 matching with the raised connection block 301 to achieve matching with the plastic part 3 without affecting the welding process.

[0041] Preferably, Figure 3 As shown, the contact end of the welding block 11 and the main body to be welded is provided with a plurality of V-shaped grooves 112 evenly distributed longitudinally, and a trapezoidal protrusion 113 is formed between two adjacent V-shaped grooves 112 .

[0042] This solution takes into account the problem of workpiece deformation that may occur during overall ultrasonic welding. A V-shaped groove 112 is set at the contact end of the welding block 11 and the main body to be welded to provide a welding buffer area, and a trapezoidal protrusion 113 is maintained between two adjacent V-shaped grooves 112 to perform ultrasonic welding in a planar contact manner to ensure welding quality.

[0043] In order to achieve stable fixation of the welding subject during the welding process, as a preferred embodiment, Figure 4 and Figure 5 As shown, the overall shape of the body to be welded is U-shaped, and the bottom mold 4 is also provided with a left outer positioning block 6 and a right outer positioning block 7 located on both sides of the body to be welded, and the left outer positioning block 6 and the right outer positioning block 7 are both fixed on the bottom mold 4.

[0044] The outer sides of the two ends of the main body to be welded are fixed by the left outer positioning block 6 and the right outer positioning block 7.

[0045] A chuck support seat 8 is also provided on the bottom die 4 , and the quick chuck 2 is installed on the bottom die 4 through the chuck support seat 8 .

[0046] Preferably, the top of the chuck support seat 8 on the bottom mold 4 is stepped, forming a high step surface and a low step surface, the quick chuck 2 is installed on the high step surface, and the low step surface matches the end height of the body to be welded to support the end of the body to be welded.

[0047] The device further comprises an inner positioning block 9 which is mounted on the low step surface of the chuck support seat 8 and abuts against the inner side of the end of the body to be welded.

[0048] The two ends of the main body to be welded are supported by the chuck support seat 8, and the inner positioning block 9 is used to fix the inner side of the end of the main body to be welded, and the left outer positioning block 6 and the right outer positioning block 7 are used to ensure the fixation stability of the end of the main body to be welded.

[0049] Preferably, a protruding connection block 301 is provided at the end of the plastic component 3 and faces the entire inner side of the plastic component 3 , and the inner positioning block 9 is provided with a snap-fitting groove 901 that matches the protruding connection block 301 .

[0050] By means of the protruding connection block 301 at the end of the plastic part 3 and by providing a snap-in groove 901 on the inner positioning block 9, the plastic part 3 as a whole is not easy to move, thereby ensuring the stability of the welding process.

[0051] In this embodiment, there are two quick clamps 2, which are located at both ends of the body to be welded; there are only one left outer positioning block 6 and one right outer positioning block 7, and they are rectangular structures; there are two inner positioning blocks 9.

[0052] Working process: After wrapping the leather 5 on the outside of the plastic part 3, install it on the bottom mold 4 so that the area to be welded is located in the welding groove 401, and the two ends of the leather 5 and the plastic part 3 are respectively limited by the left outer positioning block 6 and the right outer positioning block 7 and the two inner positioning blocks 9; then press the quick clamps 2 on both sides to fix the leather 5 and the plastic part 3;

[0053] The ultrasonic equipment is started to drive the ultrasonic welding head 1 to press the leather 5 and the plastic part 3 to be welded, and perform pressure-maintaining welding;

[0054] After welding is completed, the ultrasonic welding head 1 is driven to rise, and the quick clamps 2 on both sides are released to remove the welded product.

[0055] The preferred specific embodiments of the utility model are described in detail above. It should be understood that ordinary technicians in this field can make many modifications and changes based on the concept of the utility model without creative work. Therefore, all technical solutions that can be obtained by technicians in this technical field based on the concept of the utility model through logical analysis, reasoning or limited experiments on the basis of the existing technology should be within the scope of protection determined by the claims.

Claims

1. An ultrasonic welding device for leather layering, used for welding leather (5) and plastic parts (3), wherein the leather (5) and plastic parts (3) overlap each other to form a main body to be welded, characterized in that: The device comprises an ultrasonic welding head (1), a quick clamp (2) and a bottom die (4); the bottom die (4) is provided with a welding groove (401) matching the shape of a main body to be welded; the quick clamp (2) is mounted on the bottom die (4) and is located at both ends of the welding groove (401) and matches the positions of both ends of the main body to be welded; the ultrasonic welding head (1) is assembled on an ultrasonic device and is located above the welding groove (401); the bottom of the ultrasonic welding head (1) is provided with a plurality of welding blocks (11) extending along the to-be-welded area of ​​the main body to be welded.

2. The ultrasonic welding device for leather layering according to claim 1, characterized in that: The area to be welded is in the shape of a long strip, the cross section of the ultrasonic welding head (1) is in the shape of a rectangle matching the area to be welded, and each welding block (11) is fixed in sequence on the bottom surface of the ultrasonic welding head (1).

3. The ultrasonic welding device for leather layering according to claim 1, characterized in that: The plastic part (3) is provided with a plurality of protruding connection blocks (301), the leather (5) is correspondingly provided with a plurality of through holes corresponding one-to-one to the protruding connection blocks (301), and the welding block (11) corresponding to the protruding connection block (301) is provided with a rectangular groove (111) matching the protruding connection block (301).

4. The ultrasonic welding device for leather layering according to claim 1, characterized in that: The contact end of the welding block (11) and the main body to be welded is provided with a plurality of V-shaped grooves (112) evenly distributed in the longitudinal direction, and a trapezoidal protrusion (113) is formed between two adjacent V-shaped grooves (112).

5. The ultrasonic welding device for leather layering according to claim 1, characterized in that: The overall shape of the main body to be welded is U-shaped, and the bottom mold (4) is also provided with a left outer positioning block (6) and a right outer positioning block (7) located on both sides of the main body to be welded, and the left outer positioning block (6) and the right outer positioning block (7) are both fixed on the bottom mold (4).

6. The ultrasonic welding device for leather layering according to claim 1, characterized in that: The bottom die (4) is also provided with a chuck support seat (8), and the quick chuck (2) is installed on the bottom die (4) via the chuck support seat (8).

7. The ultrasonic welding device for leather layering according to claim 6, characterized in that: The top of the chuck support seat (8) on the bottom mold (4) is stepped to form a high step surface and a low step surface. The quick chuck (2) is installed on the high step surface. The low step surface matches the end height of the body to be welded to support the end of the body to be welded.

8. The ultrasonic welding device for leather layering according to claim 7, characterized in that: The device also includes an inner positioning block (9), which is mounted on the low step surface of the chuck support seat (8) and abuts against the inner side of the end of the body to be welded.

9. The ultrasonic welding device for leather layering according to claim 8, characterized in that: The end of the plastic part (3) is provided with a protruding connection block (301) facing the entire inner side of the plastic part (3), and the inner positioning block (9) is provided with a clamping groove (901) matching with the protruding connection block (301).

10. The ultrasonic welding device for leather layering according to claim 1, characterized in that: There are two quick clamps (2), which are respectively located at two ends of the body to be welded.

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