Punching die male die fixing structure

Abstract

The utility model discloses a male die fixing structure of a stamping die, which comprises an upper die holder and a male die, and further comprises a male die fixing seat and a male die pressing seat, and the male die fixing seat is detachably connected with the upper die holder; a mounting groove for accommodating the male die pressing seat is formed in the male die fixing seat, and the male die pressing seat is in threaded connection with the male die fixing seat; the male die pressing base is provided with an installation hole used for installing the male die, the end of the male die is provided with a limiting end, the male die is inserted into the installation hole of the male die pressing base, and the limiting end of the male die is pressed between the male die pressing base and the male die fixing sleeve and is in axial limiting fit with the end of the male die pressing base. The male die is simple in structure and convenient to assemble, only the threaded connection portion needs to be simply rotated when the male die is replaced, the number of real-time steps needed for replacing the male die is small, the male die can be replaced more conveniently, and therefore the male die can be rapidly replaced.

Description

Technical Field

[0001] This utility model relates to the field of mold equipment technology, and in particular to a punch fixing structure for stamping dies. Background Technology

[0002] A stamping die consists of a die and a punch. The punch is fixed to the upper die holder. Because the punch frequently impacts the workpiece during stamping, it is the part of the stamping die with the highest hardness requirement and is also the most easily damaged, requiring frequent replacement. Current technologies mostly use mechanical fixing and adhesive fixing for the punch. Mechanical fixing can be further divided into direct fixing, fit fixing, riveting fixing, and quick-change fixing. For punches that need frequent replacement, quick-change mechanical fixing is the common method; for example, the open press model JC23-63 uses the Springfield 114A-R0 series punch. Currently, the commonly used quick-change mechanical fixing method in stamping dies requires the complete disassembly of the entire upper die before the punch can be replaced, making the replacement process cumbersome. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a stamping die fixing structure that can reduce the difficulty of punch replacement and improve the efficiency of punch replacement.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a stamping die punch fixing structure, including an upper die base and a punch, and also including a punch fixing seat and a punch clamping seat, wherein the punch fixing seat is detachably connected to the upper die base; the punch fixing seat is provided with a mounting groove for accommodating the punch clamping seat, and the punch clamping seat is threadedly connected to the punch fixing seat; the punch clamping seat is provided with a mounting hole for mounting the punch, and the end of the punch is provided with a limiting end head, the punch is inserted into the mounting hole of the punch clamping seat, and the limiting end head of the punch is pressed between the punch clamping seat and the punch fixing seat and forms an axial limiting fit with the end of the punch clamping seat.

[0005] As an improvement to the above solution: the limiting end of the punch is a conical end, and the outer diameter of the conical end gradually increases from the inside to the outside in the axial direction of the punch; the opening of the mounting hole of the punch clamping seat is a conical opening that matches the conical end.

[0006] As an improvement to the above solution, a locking nut is also included. The locking nut is sleeved on the punch clamping seat and threadedly connected to the punch clamping seat. The locking nut abuts against the end face of the punch fixing seat at the end away from the upper die seat.

[0007] As an improvement to the above solution: the bottom of the mounting groove of the punch fixing seat is provided with an annular limiting groove, and the end of the punch clamping seat inserted into the mounting groove is provided with a convex ring structure that matches the limiting groove.

[0008] As an improvement to the above solution: the punch fixing seat and the upper die seat are detachably connected by a mating structure consisting of screws and bolts.

[0009] The beneficial effects of this utility model are as follows: This utility model improves the fixing structure of the punch in a stamping die. It achieves the fixing of the punch on the upper die holder by setting a punch fixing seat and a punch clamping seat in cooperation. A limiting end is set at the end of the punch. The punch fixing seat and the punch clamping seat are connected by a threaded connection, while the limiting end of the punch is pressed between the punch fixing seat and the punch clamping seat, thereby fixing the punch. Simultaneously, this utility model sets a locking nut that is threadedly engaged with the punch clamping seat, forming a double-threaded self-locking structure, which effectively improves the fixing effect of the punch clamping seat, thereby improving the fixing effect of the punch. This utility model has a simple structure and is easy to assemble. When replacing the punch, only a simple rotation of the threaded connection is required. The number of steps required to replace the punch is reduced, making the punch replacement work more convenient and enabling rapid punch replacement. Attached Figure Description

[0010] Figure 1 This is a cross-sectional view of the present invention.

[0011] The markings in the diagram are: 100-upper mold base, 200-punch, 210-limiting end, 300-punch fixing seat, 400-punch clamping seat, 500-locking nut, 600-unloading block. Detailed Implementation

[0012] To facilitate understanding of this utility model, the following description, in conjunction with the accompanying drawings, will provide further details.

[0013] In the description of this utility model, it should be noted that the terms "front", "rear", "left", "right", "up", "down", "inner", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of description and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0014] like Figure 1As shown, the stamping die punch fixing structure disclosed in this utility model includes an upper die base 100, a punch 200, a punch fixing seat 300, a punch clamping seat 400, and a locking nut 500. A die shank is fixed on the upper die base 100, and the upper die base 100 is connected to the stamping equipment through the die shank. The punch 200 is mounted on the upper die base 100. To improve the convenience of replacing the punch 200, this utility model adds a punch fixing seat 300 and a punch clamping seat 400 to the upper die base 100. The punch fixing seat 300 and the punch clamping seat 400 form a mating structure to achieve the installation and fixing of the punch 200. In this utility model, the punch fixing seat 300 and the upper die base 100 are detachably connected through a mating structure consisting of a screw and a screw hole, thereby reducing the difficulty of disassembly and assembly.

[0015] Specifically, such as Figure 1As shown, the punch holder 300 is detachably fixed to the upper die holder 100. A mounting groove is provided at the end of the punch holder 300 not connected to the upper die holder 100. The mounting groove is used to install the punch clamping seat 400; therefore, the shape of the mounting groove should match the outer contour of the punch clamping seat 400. One end of the punch clamping seat 400 is inserted into the mounting groove on the punch holder 300. The punch clamping seat 400 and the punch holder 300 are connected and fixed by a threaded connection. The part of the punch clamping seat 400 that mates with the mounting groove is a cylindrical structure, and the mounting groove is a corresponding circular groove. An internal thread is provided on the inner wall of the mounting groove, and an external thread is provided on the outer wall of the punch clamping seat 400. The punch clamping seat 400 is fixed in the mounting groove of the punch holder 300 through a convenient and easy-to-operate threaded connection. Meanwhile, the present invention provides a mounting hole on the punch clamping seat 400. The mounting hole is a through hole with a diameter slightly larger than the outer diameter of the punch 200 so that the punch 200 can pass through the mounting hole. A radially expanding convex edge is provided at the end of the punch 200 so that the end of the punch 200 forms a limiting end 210 with an outer diameter larger than the mounting hole diameter. Before installing the punch clamping seat 400 into the mounting groove of the punch fixing seat 300, insert the punch 200 into the mounting hole of the punch clamping seat 400, so that the end of the punch 200 without the limiting end 210 protrudes from the mounting hole, and the limiting end 210 of the punch 200 abuts against the outside of the mounting hole of the punch clamping seat 400. Then, install the punch clamping seat 400 into the mounting groove of the punch fixing seat 300, and tighten the punch clamping seat 400 to press the limiting end 210 of the punch 200 between the punch fixing seat 300 and the punch clamping seat 400, thereby completing the fixing of the punch 200. When the punch 200 needs to be replaced, simply loosen the punch clamping seat 400 to disengage it from the mounting slot of the punch fixing seat 300, and the punch 200 can be removed for replacement. This effectively saves the steps required to replace the punch 200, significantly improves the replacement efficiency of the punch 200, and enables rapid replacement of the punch 200.

[0016] Furthermore, such as Figure 1As shown, in order to improve the clamping effect on the punch 200, the structure of the limiting end 210 of the punch 200 is optimized. The limiting end 210 is set as a conical end, so that the outer diameter of the conical end gradually increases from the inside to the outside in the axial direction of the punch 200. At the same time, the opening of the mounting hole of the punch clamping seat 400 is improved to a conical opening that matches the conical end. When the limiting end 210 of the punch 200 is clamped by the punch clamping seat 400, since the mating surfaces of the limiting end 210 and the mounting hole are both conical, a mutual squeezing effect is formed between the two conical surfaces, causing the limiting end 210 to move inward toward the mounting hole, thereby effectively improving the clamping effect on the limiting end 210 and thus improving the fixing effect on the punch 200.

[0017] Furthermore, to improve the fixing effect on the punch clamping seat 400 and the punch 200, this invention provides a locking nut 500 threadedly connected to the punch clamping seat 400, which, together with the threaded connection between the punch clamping seat 400 and the punch fixing seat 300, forms a double-threaded self-locking structure. Figure 1 As shown, after the punch clamping seat 400 is installed in the mounting groove of the punch fixing seat 300, the locking nut 500 is sleeved on the punch clamping seat 400 and threadedly connected to the punch clamping seat 400. The locking nut 500 is then tightened so that the locking nut 500 is tightly pressed against the end face of the punch fixing seat 300 away from the upper die holder 100. This invention, by setting the locking nut 500 to lock the punch clamping seat 400, prevents the punch clamping seat 400 from rotating under force. The locking nut 500 and the punch fixing seat 300 provide a double locking effect on the punch clamping seat 400, effectively improving the fixing effect of the punch clamping seat 400, which is equivalent to improving the fixing effect of the punch 200.

[0018] like Figure 1 As shown, this utility model also provides a limiting groove at the bottom of the mounting groove of the punch fixing seat 300. The limiting groove is an annular groove, and a convex ring structure is provided at the end of the punch clamping seat 400 inserted into the mounting groove. The convex ring structure is an annular axial protrusion structure. The convex ring structure is embedded in the annular groove to form a limiting fit, which can play a radial limiting role for the punch clamping seat 400. At the same time, it can also play a positioning role for the installation of the punch clamping seat 400. This provides a good positioning effect for the installation of the punch clamping seat 400 in the mounting groove, which is conducive to improving the installation efficiency of the punch clamping seat 400 and the punch 200.

[0019] In addition, such as Figure 1 As shown, the present invention also includes a stripper block 600 on the punch clamping seat 400, so that the stamped product can be removed from the punch 200 through the stripper block 600; the stripper block 600 can be made of polyurethane to improve its service life.

Claims

1. A punch fixing structure for a stamping die, comprising an upper die holder (100) and a punch (200), characterized in that: It also includes a punch fixing seat (300) and a punch clamping seat (400), the punch fixing seat (300) being detachably connected to the upper die seat (100); the punch fixing seat (300) is provided with a mounting groove for accommodating the punch clamping seat (400), and the punch clamping seat (400) is threadedly connected to the punch fixing seat (300); the punch clamping seat (400) is provided with a mounting hole for mounting the punch (200), the end of the punch (200) is provided with a limiting end (210), the punch (200) is inserted into the mounting hole of the punch clamping seat (400), and the limiting end (210) of the punch (200) is pressed between the punch clamping seat (400) and the punch fixing seat (300) and forms an axial limiting fit with the end of the punch clamping seat (400).

2. The stamping die punch fixing structure as described in claim 1, characterized in that: The limiting end of the punch (200) is a conical end, and the outer diameter of the conical end gradually increases from the inside to the outside in the axial direction of the punch (200); the opening of the mounting hole of the punch clamping seat (400) is a conical opening that matches the conical end.

3. The stamping die punch fixing structure as described in claim 2, characterized in that: It also includes a locking nut (500), which is sleeved on the punch clamping seat (400) and threadedly connected to the punch clamping seat (400). The locking nut (500) abuts against the end face of the punch fixing seat (300) away from the upper die seat (100).

4. The stamping die punch fixing structure as described in claim 1, characterized in that: The bottom of the mounting groove of the punch fixing seat (300) is provided with an annular limiting groove, and the end of the punch clamping seat (400) inserted into the mounting groove is provided with a convex ring structure that matches the limiting groove.

5. The stamping die punch fixing structure as described in claim 1, characterized in that: The punch holder (300) and the upper die holder (100) are detachably connected by a mating structure consisting of a screw and a bolt.

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