A die structure for conveniently replacing punches

Abstract

The utility model relates to a mold structure for conveniently replacing punches, which includes a mold base, a punch pressing plate and a plurality of punches. The mold base is provided with positioning holes that are consistent with the number of punches, and the shape of the positioning holes is non-circular. The bottom end of the punch has a positioning portion inserted into the positioning hole. The punch is provided with a step above the positioning portion, and the lower end face of the step fits with the mold base. The punch pressing plate is provided with a hole for the punch to pass through, and the lower end face of the punch pressing plate presses the upper end face of the step. The punch pressing plate is connected and fixed to the mold base by screws. The punch of the mold structure is pre-installed with the mold base, and the mold base is used to limit the rotation of the punch, and then all the punches are pressed and fixed by the punch pressing plate. When disassembling and assembling the punch, the user only needs to disassemble and assemble the punch pressing plate, which greatly improves the installation and disassembly efficiency of the punch.

Description

Technical Field

[0001] The utility model relates to a die structure for conveniently replacing a punch. Background Art

[0002] The punch is an important component in the punching die. The manufacturer will select a punch of appropriate size according to the punching size of the required product and install the punch on the die base for use. At present, the punches on the market are fastened to the die base with screws. When multiple punches are set on a die base, the operator needs to tighten the screws one by one, which leads to low installation and disassembly efficiency. Utility Model Content

[0003] The purpose of the utility model is to overcome the above problems. We provide a mold structure for conveniently replacing the punch, which greatly improves the efficiency of replacing the punch.

[0004] To achieve the above-mentioned purpose, the utility model provides a mold structure for conveniently replacing punches, which includes a mold base, a punch pressing plate and multiple punches. The mold base is provided with positioning holes that are the same number as the punches, and the shape of the positioning holes is non-circular. The bottom end of the punch has a positioning portion that is inserted into the positioning hole. The punch is provided with a step above the positioning portion, and the lower end surface of the step is in contact with the mold base. A hole is opened on the punch pressing plate for the punch to pass through. The lower end surface of the punch pressing plate presses the upper end surface of the step, and the punch pressing plate is fixed to the mold base by screws.

[0005] In one or more embodiments, the positioning hole has a shape of a rectangle, a triangle, an ellipse, a trapezoid, a rhombus, a regular hexagon, or a regular pentagon.

[0006] In one or more embodiments, the depth of the positioning hole is 8MM-20MM, and the height of the positioning portion is consistent with the depth of the positioning hole.

[0007] In one or more embodiments, the step is an annular step, and the lower end surface of the punch plate is provided with a recessed position that cooperates with the step.

[0008] In one or more embodiments, a mounting groove is formed on the die base, the positioning holes are distributed on the groove surface of the mounting groove, and the punch pressing plate is embedded in the mounting groove.

[0009] In one or more embodiments, the surface of the punch plate is flush with the surface of the die base.

[0010] Compared with the background technology, the utility model has the following effects: the punch of the mold structure is pre-installed with the die base, the die base is used to limit the rotation of the punch, and then all the punches are pressed and fixed by the punch pressing plate. When disassembling and assembling the punch, the user only needs to disassemble and assemble the punch pressing plate, which greatly improves the installation and disassembly efficiency of the punch. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the structure of the mold structure of an embodiment of the utility model;

[0012] Figure 2 for Figure 1 Exploded diagram of

[0013] Figure 3 for Figure 2 Schematic diagram of the structure from another angle. DETAILED DESCRIPTION

[0014] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with embodiments and drawings. The embodiments are only used to explain the present invention and do not constitute a limitation on the protection scope of the present invention.

[0015] Please see Figure 1-3 The present application provides a mold structure for conveniently replacing punches, which includes a die base 1, a punch pressing plate 2 and a plurality of punches 3. The die base is provided with positioning holes 4 that are the same as the number of punches, and the shape of the positioning holes is non-circular. The bottom end of the punch 3 has a positioning portion 31 inserted into the positioning hole. After the positioning portion is inserted into the positioning hole, the rotation of the punch can be restricted. The punch is located above the positioning portion and is provided with a step 32. The lower end surface of the step fits with the die base 1 to enhance the structural tightness between the punch and the die base. The punch pressing plate 2 is provided with a hole 5 for the punch to pass through. The lower end surface of the punch pressing plate presses the upper end surface of the step 32. The punch pressing plate 2 is connected and fixed to the die base 1 by screws 6. When installing, first insert the positioning portion of the punch into the positioning hole, then cover the punch pressing plate, and use screws to fix the punch pressing plate and the die base together, so that the punch is fixed to the die base; when disassembling, just unscrew the screws, and remove the punch pressing plate to remove all the punches.

[0016] The shape of the positioning hole 4 can be a combination of one or more shapes selected from rectangle, triangle, ellipse, trapezoid, rhombus, regular hexagon, and regular pentagon, which can be selected according to actual needs.

[0017] The depth of the positioning hole 4 is 8MM-20MM, the height of the positioning portion 31 is consistent with the depth of the positioning hole 4, and the depth of the positioning hole is preferably 10MM, 13MM, 15MM, 18MM, etc., to ensure that the positioning portion has a certain insertion depth. The step 32 is an annular step, and the lower end surface of the punch pressing plate 2 is provided with a concave position 7 that cooperates with the step to strengthen the structural tightness of the punch pressing plate and the punch, so that the structure is more stable after the punch is fixed.

[0018] The die base 1 is provided with a mounting groove 8, the positioning holes 4 are distributed on the groove surface of the mounting groove, the punch pressing plate 2 is embedded in the mounting groove to strengthen the tightness of the connection structure between the punch pressing plate and the die base, and the surface of the punch pressing plate 2 is flush with the surface of the die base 1 to prevent the punch pressing plate from protruding.

[0019] The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiment. Any equivalent modifications or changes made by ordinary technicians in this field based on the contents disclosed in the present invention should be included in the protection scope recorded in the claims.

Claims

1. A die structure for conveniently replacing a punch, characterized in that: The invention comprises a die base (1), a punch pressing plate (2) and a plurality of punches (3); the die base is provided with positioning holes (4) the same number as the punches; the positioning holes are non-circular in shape; the bottom end of the punch (3) has a positioning portion (31) inserted into the positioning hole; the punch is provided with a step (32) above the positioning portion; the lower end surface of the step is in contact with the die base (1); the punch pressing plate (2) is provided with a hole (5) for the punches to pass through; the lower end surface of the punch pressing plate presses the upper end surface of the step (32); the punch pressing plate (2) is connected and fixed to the die base (1) by a screw (6).

2. A die structure for conveniently replacing a punch according to claim 1, characterized in that: The shape of the positioning hole (4) is one of a rectangle, a triangle, an ellipse, a trapezoid, a rhombus, a regular hexagon, and a regular pentagon.

3. The die structure for conveniently replacing a punch according to claim 1, characterized in that: The depth of the positioning hole (4) is 8MM-20MM, and the height of the positioning portion (31) is consistent with the depth of the positioning hole (4).

4. The die structure for conveniently replacing a punch according to claim 1, characterized in that: The step (32) is an annular step, and the lower end surface of the punch pressing plate (2) is provided with a recess (7) that cooperates with the step.

5. A die structure for conveniently replacing a punch according to any one of claims 1 to 4, characterized in that: The die base (1) is provided with a mounting groove (8), the positioning holes (4) are distributed on the groove surface of the mounting groove, and the punch pressing plate (2) is embedded in the mounting groove.

6. A die structure for conveniently replacing a punch according to claim 5, characterized in that: The surface of the punch pressing plate (2) is flush with the surface of the die base (1).

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