A new leather punching die special-shaped punch positioning mechanism

Abstract

The utility model discloses a new leather punch die special -shaped punch needle positioning mechanism, including base and install the punch plate of base surface, the surface of punch plate is equipped with mounting hole, the surface of punch plate is equipped with mounting hole, the inside connection of mounting hole has punch needle, both sides of punch needle all are provided with vertical surface, the surface of punch plate near punch -out hole is equipped with mounting groove, the utility model discloses through placing the leather cloth on punch plate, puncher is started at this moment, and the puncher is carried out to the leather stamping operation, and according to the processing technology demand in the process, arranges punch needle on punch plate, installs positioning strip in the mounting groove of punch plate surface simultaneously, when carrying out punch operation to the leather, the vertical surface of punch needle both sides always carries out close contact along with the side of positioning strip at this moment, guarantees the punch needle positioning movement effect of special -shaped structure, avoids appearing punch needle rotation, has promoted the quality and effect of leather punch.

Description

Technical Field

[0001] This utility model belongs to the field of leather punching mold technology, specifically relating to a new positioning mechanism for irregular punches in leather punching molds. Background Technology

[0002] Leather punching is a process that uses mechanical, laser, or chemical methods to create regular or irregular holes in leather materials. It involves using a punch or die to puncture the leather under pressure to form standard shapes such as round or square holes.

[0003] Specifically, the cylindrical structure of the punch has inherent flaws in its design during operation. Under high-speed stamping conditions, due to the uneven distribution and elasticity of leather fibers, the punch experiences lateral shear force upon contact with the leather, causing it to shift position. This shift leads to irregular deformation in the area where the die edge contacts the leather, resulting in an actual punched hole diameter larger than the design value. Furthermore, punch shift can cause tearing and burrs on the leather surface, especially when processing hard leather, increasing the defect rate. With prolonged use, the wear on the punch and the die guide hole intensifies, further deteriorating punching accuracy and severely impacting the quality and production efficiency of leather products. Utility Model Content

[0004] The purpose of this invention is to provide a novel positioning mechanism for irregularly shaped punches in leather punching dies, aiming to address the inherent defects in the cylindrical structure design of punches in existing traditional leather punching dies during operation. Under high-speed stamping conditions, due to the uneven distribution and elasticity of leather fibers, the punch is subjected to lateral shear force upon contact with the leather, causing positional displacement. This displacement leads to irregular deformation in the contact area between the die edge and the leather, resulting in an actual punched hole diameter larger than the design value.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a new leather punching die irregular punch positioning mechanism, including a base and a punching plate mounted on the surface of the base, wherein the surface of the punching plate is provided with mounting holes;

[0006] The surface of the perforated plate is provided with mounting holes, and a punch is connected inside the mounting holes. Both sides of the punch are provided with vertical surfaces. The surface of the perforated plate near the punching holes is provided with mounting grooves, and positioning strips are installed on the inner wall of the mounting grooves. The positioning strips are installed and connected to the perforated plate through the mounting grooves.

[0007] As a preferred embodiment of the new leather punching mold irregular punch positioning mechanism of this utility model, the inner wall size of the punching hole is adapted to the size of the punch.

[0008] As a preferred embodiment of the new leather punching mold irregular punch positioning mechanism of this utility model, the vertical surfaces on both sides of the punch are in contact with the side edges of the positioning strip.

[0009] Compared with the prior art, the beneficial effects of the present invention are:

[0010] This invention involves placing leather fabric on a perforated plate, then starting a perforating machine to punch the leather. During the process, punches are arranged on the perforated plate according to the processing requirements, and positioning strips are installed in mounting grooves on the surface of the perforated plate. When punching the leather, the vertical surfaces on both sides of the punches are always in close contact with the sides of the positioning strips, ensuring the positioning and movement of the punches in irregular shapes, preventing punch rotation, and improving the quality and effect of leather punching. Attached Figure Description

[0011] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0012] Figure 1 This is a three-dimensional structural diagram of the positioning mechanism of this utility model;

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

[0014] Figure 3 This is a schematic diagram of the positioning strip installation structure of this utility model;

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

[0016] In the diagram: 1. Base; 2. Perforated plate; 3. Mounting hole; 4. Stamping hole; 5. Punch; 51. Vertical surface; 6. Mounting groove; 7. Positioning strip. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Please see Figures 1-4 The present invention provides the following technical solution: a new leather punching mold irregular punch positioning mechanism, including a base 1 and a punching plate 2 installed on the surface of the base 1, wherein the surface of the punching plate 2 is provided with mounting holes 3;

[0019] The surface of the perforated plate 2 is provided with mounting holes 3, and a punch 5 is connected inside the mounting holes 3. Vertical surfaces 51 are provided on both sides of the punch 5. The surface of the perforated plate 2 near the punching hole 4 is provided with mounting grooves 6. Positioning strips 7 are installed on the inner wall of the mounting grooves 6. The positioning strips 7 are installed and connected to the perforated plate 2 through the mounting grooves 6.

[0020] Preferably, the inner wall dimensions of the punching hole 4 are adapted to the dimensions of the punch 5. In practical use, by installing the punch 5 into the interior of the punching hole 4 according to the required shape, the effect of using the punch 5 to perform shape punching on the leather surface is ensured.

[0021] Preferably, the vertical surfaces 51 on both sides of the punch 5 are in contact with and connected to the side of the positioning strip 7. In actual use, when the punch 5 contacts and punches the leather, the vertical surfaces 51 on both sides of the punch 5 are always tightly connected to the positioning strip 7, thus preventing the punch 5 from rotating during the punching operation.

[0022] Additionally: In existing process 1, the hole at the front of the punch 5 is irregularly shaped, while the rear part is cylindrical, such as a square. Inserting the punch into this cylindrical part cannot guarantee that the square edges will align correctly. Process 2 involves making the rear part of the square punch 5 square, and also making the mounting plate correspondingly square, which ensures the square holes align correctly. However, machining the mounting plate requires wire cutting, increasing processing costs. In this solution, when drilling circular holes, a positioning strip is added to the mounting plate, and the punch 5 is ground flat to find the orientation. This method is simple to operate and has low processing costs.

[0023] The working principle of this utility model is as follows: First, the leather fabric is placed on the perforated plate 2. Then, the perforating machine is started to punch the leather. During the process, according to the processing requirements, punches 5 are arranged on the perforated plate 2. At the same time, the positioning strip 7 is installed in the mounting groove 6 on the surface of the perforated plate 2. When punching the leather, the vertical surfaces 51 on both sides of the punches 5 are always in close contact with the sides of the positioning strip 7, which ensures the positioning and movement effect of the irregularly shaped punches 5, avoids the rotation of the punches 5, and improves the quality and effect of leather punching.

[0024] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A novel positioning mechanism for irregularly shaped punches in a leather punching mold, comprising a base (1) and a punching plate (2) mounted on the surface of the base (1), characterized in that: The surface of the perforated plate (2) is provided with mounting holes (3); The surface of the perforated plate (2) is provided with mounting holes (3), and a punch (5) is connected inside the mounting holes (3). Both sides of the punch (5) are provided with vertical surfaces (51). The surface of the perforated plate (2) near the punching hole (4) is provided with a mounting groove (6). A positioning strip (7) is installed on the inner wall of the mounting groove (6). The positioning strip (7) is connected to the perforated plate (2) through the mounting groove (6).

2. The novel leather punching die irregular punch positioning mechanism according to claim 1, characterized in that: The inner wall dimensions of the punch hole (4) are adapted to the dimensions of the punch (5).

3. The novel leather punching die irregular punch positioning mechanism according to claim 1, characterized in that: The vertical surfaces (51) on both sides of the punch (5) are in contact with the side of the positioning strip (7).

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