A high-frequency welding mold for headphone leather

Abstract

This utility model discloses a high-frequency welding mold for headphone leather, relating to the field of high-frequency welding technology. It mainly consists of a base, a fixture plate, and an upper mold base. The base has a positioning groove for fixing the fixture plate, a clearance groove in the middle of the fixture plate, and positioning strips on both sides that cooperate with the leather positioning plate. Positioning protrusions on the positioning plate position the leather. A high-frequency welding head is installed inside the upper mold base, and the two are connected by a spring. The fixture plate has guide holes, and the upper mold base has corresponding guide shafts. During operation, the leather is positioned and placed on the fixture plate. The upper mold base presses down, and the guide shafts cooperate with the guide holes for positioning. The high-frequency welding head uses the welding protrusions to weld the leather. This mold can accurately position the leather, ensuring welding quality, improving product aesthetics and durability, and increasing production efficiency and yield.

Description

Technical Field

[0001] This utility model relates to the field of high-frequency welding technology, and in particular to a high-frequency welding mold for headphone leather. Background Technology

[0002] In the manufacturing of over-ear headphones, the quality of the stitching of the outer leather material (including the outer fabric and the backing) of the headband plays a crucial role in the overall quality, appearance, and lifespan of the headphones. Traditionally, leather stitching has relied primarily on sewing, a mature technique with significant drawbacks. Sewing leaves clear stitches on the leather surface, compromising the overall aesthetics and failing to meet current consumer demands for a minimalist and refined look. This deficiency is even more pronounced in the high-end headphone market. Furthermore, over-ear headphones are frequently subjected to pulling and bending during daily use, making the stitched areas prone to wear and tear, and causing them to come undone. This not only reduces headphone quality but also shortens their lifespan, increasing user costs and repair hassles.

[0003] With technological advancements, high-frequency welding technology has gained widespread application in material splicing due to its advantages such as high welding strength, excellent sealing, and smooth appearance. However, the market currently lacks high-frequency welding molds specifically designed for the characteristics of headphone leather. Existing general-purpose high-frequency welding molds struggle to accurately position the leather when used with headphone materials, failing to guarantee welding accuracy and consistency. For example, the leather is prone to displacement within the mold, leading to welding position deviations and affecting splicing quality. Furthermore, the lack of effective buffering and guiding structures may damage the leather during mold closing, reducing product yield. Utility Model Content

[0004] To address the technical problems existing in the background art, this utility model proposes a high-frequency welding mold for headphone leather.

[0005] This utility model proposes a high-frequency welding mold for headphone leather, including a base, a jig plate, and an upper mold base. The top of the jig plate is equipped with leather positioning plates on both sides of the clearance groove. Several positioning protrusions are connected to the top of the leather positioning plates. A high-frequency mold head is movably connected inside the upper mold base. Welding protrusions are connected to both sides of the bottom end of the high-frequency mold head. The welding protrusions protrude from the upper mold base, and the size and shape of the welding protrusions are adapted to the inner edge of the leather positioning plates.

[0006] Furthermore, a positioning groove is provided at the top of the base, and the fixture plate is snapped into and fixed inside the positioning groove, and the two are compatible.

[0007] Furthermore, positioning strips are symmetrically installed on the top of the fixture plate, and positioning grooves are reserved on the outer edge of the leather positioning plate, which are adapted to the positioning strips.

[0008] Furthermore, several guide holes are opened inside the jig plate, and several guide shafts are connected to the bottom end of the upper mold base corresponding to the positions of the guide holes. During the mold closing process of the jig plate and the upper mold base, the guide shafts are inserted into the inside of the guide holes.

[0009] Furthermore, handles are installed at both ends of the fixture plate.

[0010] Furthermore, the upper mold base and the high-frequency mold head are connected by several springs.

[0011] The beneficial effects of this utility model are as follows: the precise positioning structure effectively prevents the leather from shifting during welding, ensuring that the welding position is accurate and highly consistent, significantly improving the pass rate and quality stability of headphone leather splicing, reducing the scrap rate caused by poor welding, and thus improving production efficiency. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the disassembled structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the fixture plate in this utility model;

[0014] Figure 3 This is a schematic diagram of the upper mold base in this utility model;

[0015] Figure 4 This is a schematic diagram of the assembly structure of this utility model;

[0016] Figure 5 This is a half-sectional view of the assembled version of this utility model;

[0017] In the diagram: 1. Base; 11. Positioning groove; 2. Fixture plate; 21. Positioning strip; 22. Leather positioning plate; 23. Positioning protrusion; 24. Clearance groove; 25. Guide hole; 26. Handle; 3. Upper mold base; 31. Spring; 32. High-frequency mold head; 33. Guide shaft; 34. Welding protrusion. Detailed Implementation

[0018] Reference Figure 1-5 The present invention proposes a high-frequency welding mold for headphone leather, which mainly consists of a base 1, a jig plate 2, and an upper mold base 3, as detailed below:

[0019] The base 1 is plate-shaped with a positioning groove 11 at its top. The shape of the positioning groove 11 matches the bottom contour of the jig plate 2 and is used to position and fix the jig plate 2. The jig plate 2 is also plate-shaped and its size matches the positioning groove 11 so that it can be smoothly locked and placed in the positioning groove 11. An avoidance groove 24 is provided in the middle of the jig plate 2. The shape and size of the avoidance groove 24 are designed according to the shape of the headphone leather and the welding position requirements to provide a space for the leather during the welding process. The jig plate 2 is placed in the positioning groove 11 of the base 1, and the jig plate 2 is constrained by the side wall of the positioning groove 11 to prevent the jig plate 2 from moving in the horizontal direction, ensuring that the jig plate 2 is accurately placed on the upper part of the base 1, and at the same time avoiding the jig plate 2 from shifting during the subsequent high-frequency pressing process.

[0020] The positioning strip 21 is a long strip structure, symmetrically installed on both sides of the top of the jig plate 2. The edge of the positioning strip 21 has a flat positioning surface for cooperating with the positioning groove of the leather positioning plate 22. The leather positioning plate 22 is a plate structure, installed on both sides of the clearance groove 24 at the top of the jig plate 2. The outer edge of the leather positioning plate 22 is reserved with a positioning groove. The shape and size of the positioning groove are adapted to the edge of the positioning strip 21. Several positioning protrusions 23 are connected to the top of the leather positioning plate 22. The positioning protrusions 23 are cylindrical structures, evenly distributed on the top of the leather positioning plate 22, for positioning the leather. The positioning strip 21 is first fixed to both sides of the top of the jig plate 2 by bolt connection or other means to ensure that the positioning strip 21 is installed firmly and in an accurate position. Then, place the leather positioning plate 22 on the jig plate 2, so that the edge of the positioning strip 21 is inserted into the positioning groove of the leather positioning plate 22, and then fix the leather positioning plate 22 on the jig plate 2 with bolts and other fasteners to prevent the leather positioning plate 22 from being installed in an inaccurate position.

[0021] The upper mold base 3 is located above the jig plate 2. The upper mold base 3 has an internal space for installing the high-frequency mold head 32. The high-frequency mold head 32 is movably connected inside the upper mold base 3. Both sides of the bottom end of the high-frequency mold head 32 are connected to welding protrusions 34. The welding protrusions 34 are strip-shaped structures that protrude from the upper mold base 3. The size and shape of the welding protrusions 34 are adapted to the inner edge of the leather positioning plate 22. They are used to heat and weld the leather during the welding process. The upper mold base 3 and the high-frequency mold head 32 are connected by several springs 31. One end of the spring 31 is fixed to the top inside the upper mold base 3 by welding or bolting, and the other end is fixed to the top of the high-frequency mold head 32 by welding or bolting. The deformation of the spring 31 can play a buffering role during the mold closing process of the jig plate 2 and the upper mold base 3, thus protecting the leather.

[0022] Several guide holes 25 are made inside the jig plate 2. The guide holes 25 are cylindrical through holes and are evenly distributed on the jig plate 2. They are used to guide the guide shafts 33 during the mold closing process. Several guide shafts 33 are connected to the bottom end of the upper mold base 3 at the position corresponding to the guide holes 25. The guide shafts 33 are cylindrical structures and are fixed to the bottom end of the upper mold base 3 by welding or bolt connection. The diameter of the guide shafts 33 is matched with the diameter of the guide holes 25. During the mold closing process of the jig plate 2 and the upper mold base 3, the guide shafts 33 are inserted into the guide holes 25 to play the role of mold closing positioning and ensure that the upper mold base 3 and the jig plate 2 are accurately closed.

[0023] The handle 26 has a U-shaped structure and is installed at both ends of the fixture plate 2, making it easy for workers to hold and operate.

[0024] When the mold is in operation, firstly, the leather material needs to be placed on the fixture plate 2. Corresponding positioning holes are reserved on both sides of the leather material. The leather material is folded in half, and then the positioning holes are hung on the outside of the positioning protrusions 23. Then, the fixture plate 2 is placed on the base 1. The upper mold base 3 is installed on an external high-frequency device (not shown in the figure). The high-frequency device drives the upper mold base 3, the high-frequency mold head 32, and the welding protrusion 34 to move down until the welding protrusion 34 is tightly against the inner edge of the leather positioning plate 22. Pressed against the welding position of the leather material, as the upper mold base 3 moves down continuously, the spring 31 contracts. Under the reaction force, the welding protrusion 34 presses tightly against the welding position of the leather material. Then, the high-frequency equipment is started, and the leather material is welded together using the welding protrusion 34. How the high-frequency equipment performs heat melting through the welding protrusion 34 is existing technology and will not be described in detail here. After the leather material is welded, there is a heat-pressed mark. Finally, the waste material next to it is cut along the mark to obtain the finished headphone leather material.

[0025] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A high-frequency welding mold for headphone leather, characterized in that, The fixture includes a base (1), a jig plate (2), and an upper mold base (3). The top of the jig plate (2) is located on both sides of the clearance groove (24) and a leather positioning plate (22) is installed. The top of the leather positioning plate (22) is connected to several positioning protrusions (23). The upper mold base (3) is movably connected to a high-frequency mold head (32). The bottom of the high-frequency mold head (32) is connected to both sides of a welding protrusion (34). The welding protrusion (34) protrudes from the upper mold base (3), and the size and shape of the welding protrusion (34) are adapted to the inner edge of the leather positioning plate (22).

2. The high-frequency welding mold for headphone leather according to claim 1, characterized in that, A positioning groove (11) is provided at the top of the base (1), and the fixture plate (2) is engaged and fixed inside the positioning groove (11), and the two are compatible.

3. The high-frequency welding mold for headphone leather according to claim 1, characterized in that, Positioning strips (21) are symmetrically installed on the top of the jig plate (2), and positioning grooves are reserved on the outer edge of the leather positioning plate (22), which are compatible with the positioning strips (21).

4. The high-frequency welding mold for headphone leather according to claim 1, characterized in that, The fixture plate (2) has several guide holes (25) inside. The bottom of the upper mold base (3) is connected to several guide shafts (33) corresponding to the guide holes (25). During the mold closing process of the fixture plate (2) and the upper mold base (3), the guide shafts (33) are inserted into the guide holes (25).

5. The high-frequency welding mold for headphone leather according to claim 1, characterized in that, Handles (26) are installed at both ends of the fixture plate (2).

6. The high-frequency welding mold for headphone leather according to claim 1, characterized in that, The upper mold base (3) and the high-frequency mold head (32) are connected by several springs (31).

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