Leather punching device

Abstract

The utility model discloses a leather punching device which comprises a handle, a handle head, an assembling portion located on the handle head and a hole-shaped die inserted in the assembling portion, a positioning groove is formed in the end face, where the hole-shaped die is inserted, of the assembling portion, and a plurality of inserting holes are formed in the positioning groove. The hole-shaped die comprises a punching part, a positioning part and an inserting part which are sequentially arranged and fixed or integrally formed, the punching part is provided with a punching end, the shape of the positioning part is matched with that of the positioning groove, radial movement and circumferential rotation of the positioning part are limited by the positioning groove, and the inserting part is inserted into the inserting hole. The punching device is reasonable in structural design, the square positioning groove is formed in the assembling part, the structure of the punching die is improved, a better limiting effect can be achieved, and the situation that after the punching device is used for a long time, due to looseness between a fastener and the punching die, positioning of the punching die is insufficient is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of manual punching devices, and more specifically to a leather punching device. Background Art

[0002] The applicant's prior application CN210215409U discloses an assembled punching device for handmade leather production, including a knocking handle, a hole-shaped mold located at the head position of the knocking handle; a slide rail is arranged at the head position of the knocking handle, the slide rail is located on the inner plate surface of the fixed plate, and the lower end of the fixed plate is fixed as one body with one side of the top surface of the head of the knocking handle; a sliding plate is arranged on the slide rail, and a slide groove matching the slide rail is arranged on the inner plate surface of the sliding plate, the slide rail is located in the slide groove, at least three support holes are arranged on the top of the sliding plate, and the hole-shaped mold is inserted into the support hole, and the three sliding surfaces of the slide rail and the three sliding surfaces of the slide groove are integrated to form a wedge-shaped locking sliding surface, and the slide groove can only slide horizontally on the slide rail under the action of external force. The utility model improves work efficiency, reduces use cost, realizes the free replacement of the hole-shaped mold and convenient later maintenance, and realizes adaptive punching design.

[0003] During practical use, the applicant discovered that the punching device of the above structure has the following defects: since the hole-shaped mold is positioned and locked in the base hole by a positioning locking screw passing through the positioning locking hole, the positioning locking screw may become loose after long-term punching use, so it is necessary to further improve the existing structure. Summary of the invention

[0004] The utility model overcomes the shortcomings of the prior art and provides a leather punching device with a reasonable structural design. By arranging a square positioning groove on the assembly part and improving the structure of the punching mold, a better limiting effect can be achieved, thereby preventing the punching mold from being insufficiently positioned due to looseness between the fastener and the punching mold after the punching device is used for a long time.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A leather punching device comprises a handle, a handle head, an assembly part located on the handle head, and a hole-shaped mold inserted in the assembly part. A positioning groove is provided on the end surface of the assembly part for inserting the hole-shaped mold, and a plurality of insertion holes are provided in the positioning groove. The hole-shaped mold comprises a punching part, a positioning part and an insertion part which are arranged in sequence and fixed or integrally formed. The punching part has a punching end. The shape of the positioning part is adapted to the positioning groove and is restricted by the positioning groove in radial movement and circumferential rotation. The insertion part is inserted in the insertion hole.

[0007] Preferably, the positioning groove is configured as a square groove, and the positioning portion is configured as a polyhedron having at least two faces that can abut and cooperate with two side surfaces of the square groove.

[0008] Preferably, the punching end is configured to be an inclined flat shape, a pointed cylindrical shape, or a pointed conical shape.

[0009] Preferably, the insertion hole is configured as a circular hole, and the insertion portion is configured as a cylinder that matches the insertion hole.

[0010] Preferably, the assembly portion is provided with a positioning hole corresponding to the insertion hole, and the positioning hole may be provided with a fastener that can axially limit the hole-shaped mold.

[0011] Preferably, the assembly portion is integrally provided with the handle head.

[0012] Preferably, the assembly portion and the handle head form a sliding and detachable arrangement that cooperates with a dovetail groove.

[0013] Beneficial effects of the utility model:

[0014] The utility model has a reasonable structural design. By arranging a square positioning groove on the assembly part and improving the structure of the punching die, a better limiting effect can be achieved, thereby preventing the punching die from being insufficiently positioned due to looseness between the fastener and the punching die after the punching device is used for a long time. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of a specific embodiment of the utility model;

[0016] Figure 2 It is a structural schematic diagram of a hole-shaped mold according to a specific embodiment of the utility model;

[0017] Figure 3 It is a side view of the positioning groove of a specific embodiment of the utility model;

[0018] Figure 4 It is a top view of the positioning groove according to a specific embodiment of the utility model.

[0019] In the figure: 1. handle; 2. handle head; 3. assembly part; 31. positioning groove; 32. insertion hole; 33. positioning hole; 4. hole-shaped mold; 41. punching part; 42. positioning part; 43. insertion part; 44. punching end. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] like Figure 1-4 As shown, a leather punching device comprises a handle 1, a handle head 2, a mounting portion 3 located on the handle head 2, and a hole-shaped mold 4 inserted in the mounting portion 3. A positioning groove 31 is provided on the end surface of the mounting portion 3 for inserting the hole-shaped mold 4. A plurality of insertion holes 32 are provided in the positioning groove 31. The hole-shaped mold 4 comprises a punching portion 41, a positioning portion 42, and an insertion portion 43 which are sequentially arranged and fixed or integrally formed. The punching portion 41 has a punching end 44. The shape of the positioning portion 42 is adapted to the positioning groove 31 and is restricted by the positioning groove 31 in radial movement and circumferential rotation. The insertion portion 43 is inserted in the insertion hole 32. ; The positioning groove 31 is configured as a square groove, and the positioning portion 42 is configured as a polyhedron having at least two faces that can abut and cooperate with the two side surfaces of the square groove; the punching end 44 is configured as an inclined flat shape or a pointed cylindrical shape or a pointed conical shape; the insertion hole 32 is configured as a circular hole, and the insertion portion 43 is configured as a cylinder adapted to the insertion hole 32; a positioning hole 33 corresponding to the insertion hole 32 is provided on the assembly portion 3, and the positioning hole 33 can be provided with a fastener that can axially limit the hole-shaped mold 4; the assembly portion 3 is integrally arranged with the handle head 2; the assembly portion 3 and the handle head 2 form a sliding and detachable arrangement that cooperates with a dovetail groove.

[0022] By adopting the above technical solution, compared with the prior art, the main innovation of the utility model is to set a square positioning groove 31 on the assembly part 3, and to improve the structure of the punching mold. The effect achieved is that through the cooperation of the positioning groove 31 and the positioning part 42, a better limiting effect can be achieved to prevent the insufficient positioning of the punching mold due to loosening between the fastener and the punching mold after the punching device is used for a long time. Among them, the cooperation between the positioning groove 31 and the positioning part 42 mainly plays the role of radial and circumferential limiting the positioning part 42. In this way, the positioning groove 31 is easy to process, and the positioning hole 33 is set as a circular hole, which is convenient for the insertion of the hole-shaped mold 4 and easy for disassembly and assembly.

[0023] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A leather punching device, comprising a handle (1), a handle head (2), a mounting portion (3) located on the handle head (2), and a hole-shaped mold (4) inserted into the mounting portion (3), characterized in that: A positioning groove (31) is provided on the end surface of the assembly portion (3) for inserting the hole-shaped mold (4), and a plurality of insertion holes (32) are provided in the positioning groove (31). The hole-shaped mold (4) comprises a punching portion (41), a positioning portion (42) and an insertion portion (43) which are sequentially arranged and fixed or integrally formed. The punching portion (41) has a punching end (44). The positioning portion (42) is matched in shape with the positioning groove (31) and is restricted in radial movement and circumferential rotation by the positioning groove (31). The insertion portion (43) is inserted in the insertion hole (32).

2. A leather punching device according to claim 1, characterized in that: The positioning groove (31) is configured as a square groove, and the positioning portion (42) is configured as a polyhedron having at least two faces that can abut against two side faces of the square groove.

3. A leather punching device according to claim 1 or 2, characterized in that: The punching end (44) is configured to be an inclined flat shape, a pointed cylindrical shape, or a pointed conical shape.

4. A leather punching device according to claim 3, characterized in that: The insertion hole (32) is configured as a circular hole, and the insertion portion (43) is configured as a cylinder that matches the insertion hole (32).

5. The leather punching device according to claim 3, characterized in that: The assembly portion (3) is provided with a positioning hole (33) corresponding to the insertion hole (32), and the positioning hole (33) can be provided with a fastener capable of axially limiting the hole-shaped mold (4).

6. The leather punching device according to claim 3, characterized in that: The assembly portion (3) is integrally arranged with the handle head (2).

7. The leather punching device according to claim 3, characterized in that: The assembly portion (3) and the handle head (2) form a dovetail groove that cooperates with each other to form a slidable and detachable arrangement.

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