Split type punch structure of die forging steel cap

Abstract

The utility model relates to the technical field of die forging punches, in particular to a die forging steel cap split type punch structure which comprises a punch A, a punch B and a connecting structure, the punch A and the punch B form a coaxial whole through the connecting structure, and the die forging steel cap split type punch structure is characterized in that the connecting structure comprises an embedding groove formed in the punch A, and a positioning block is arranged in the embedding groove; a locking block is arranged between the positioning block and the punch B in a fixed structure mode, and a groove is formed in the lower portion of the locking block in the circumferential direction. A dovetail groove is formed in the lower portion of the caulking groove, the upper portion of the dovetail groove communicates with the caulking groove, and the two ends of the dovetail groove communicate with the side wall of the punch A; the left clamping block and the right clamping block are matched with the inner contours of the dovetail grooves, and the left clamping block and the right clamping block are arranged in the dovetail grooves in the two sides of the locking block respectively; the locking block is fixed in the dovetail groove through the left clamping block and the right clamping block by means of the bolt, then the punch A and the punch B are fixedly connected, the structure is simple and convenient to disassemble, the connecting structure is stable, and the stress form is reasonable.

Description

Technical Field:

[0001] This application relates to the technical field of die-casting punches, and particularly to a split punch structure for die-forged steel caps. Background Art:

[0002] The die-forged steel cap is die-forged on a horizontal forging machine, that is, the blank is upset and extruded through a punch to form a formed blank. During long-term use, due to problems such as unreasonable die clearances and misalignment of the upper and lower die seats, the punch wears, and the entire punch needs to be replaced, resulting in serious material waste. Content of the Utility Model:

[0003] To solve the above technical problems, the present utility model provides a split punch structure for die-forged steel caps, and the technical problem to be solved is: after the punch wears, the entire punch needs to be replaced, resulting in serious material waste. To solve the above technical problems, the technical solution adopted by the present utility model is:

[0004] The split punch structure for die-forged steel caps includes punch A, punch B, and a connection structure. Punch A and punch B form an integral coaxial body through the connection structure. It is characterized in that the connection structure includes:

[0005] A slot opened inside punch A, and a positioning block is arranged in the slot;

[0006] A locking block, the locking block is arranged between the positioning block and punch B in a fixed structure manner, and a groove is opened along the circumferential direction at the lower part of the locking block;

[0007] A dovetail groove, the dovetail groove is arranged at the lower part of the slot and is communicated with the slot, and both ends of the dovetail groove are communicated with the side wall of punch A;

[0008] A left clamping block and a right clamping block adapted to the inner contour of the slot, the left clamping block and the right clamping block are respectively arranged in the dovetail grooves on both sides of the locking block, the left clamping block and the right clamping block are both slidably connected to the dovetail groove in a detachable structure manner, and the locking block is connected to punch A through the left clamping block and the right clamping block;

[0009] A bolt, one end of the bolt passes through the right clamping block, the locking block and is threadedly engaged with the left clamping block.

[0010] Further, both the locking block and the positioning block are arranged in a cylindrical structure, and the outer peripheral wall of the positioning block is in contact with the inner peripheral wall of the slot.

[0011] Further, the groove includes an inverted frustum, and a fillet structure is arranged between the inverted frustum and punch B.

[0012] Further, taper surfaces adapted to the circumferential surface of the inverted frustum are arranged at both opposite ends of the left clamping block and the right clamping block.

[0013] Further, the outer ends of the left clamping block and the right clamping block are fitted to the outer peripheral wall of the punch A.

[0014] Further, a clamping groove for placing bolts and nuts is formed at the outer end of the right clamping block.

[0015] The beneficial effects of the present utility model are as follows: The locking block is fixed in the dovetail groove by bolts through the left and right clamping blocks, and then the punch A and the punch B are fixedly connected. The structure is not only simple and convenient for disassembly, but also has a stable connection structure and a reasonable force-bearing form.

[0016] Through the cooperation of the inverted frustum and the tapered surface, the tapered surface forms an upward lifting force on the locking block, so that the punch A and the punch B are more closely fitted, reducing deformation. Description of the drawings:

[0017] Figure 1 is the schematic exploded view of the front view of the present utility model.

[0018] Figure 2 is the schematic exploded view of the right view of the present utility model.

[0019] Figure 3 is the schematic exploded view of the punch B and the left and right clamping blocks of the present utility model

[0020] In the figure:

[0021] 1. Punch A, 2. Punch B, 3. Embedded groove, 4. Positioning block, 5. Locking block, 6. Dovetail groove, 7. Left clamping block, 8. Right clamping block, 9. Groove, 91. Inverted frustum, 92. Rounded corner structure, 10. Bolt, 11. Clamping groove, 12. Tapered surface. Specific embodiments:

[0022] To make the purpose, technical solutions and advantages of the implementation of the present utility model clearer, the present utility model will now be further described in detail with reference to the drawings and the following embodiments, so that the public can better master the implementation method of the present utility model. The specific implementation scheme of the present utility model is as follows:

[0023] The split punch structure of the die-forged steel cap includes punch A1, punch B2 and a connection structure. Punch A1 and punch B2 form an integral coaxial body through the connection structure. It is characterized in that the connection structure includes an embedded groove 3 opened inside punch A1. A positioning block 4 is arranged in the embedded groove 3. A locking block 5 is arranged between the positioning block 4 and punch B2 in a fixed structure manner. A groove 9 is opened along the circumferential direction at the lower part of the locking block 5. A dovetail groove 6 is arranged at the lower part of the embedded groove 3. The upper part of the dovetail groove 6 is communicated with the embedded groove 3, and both ends of the dovetail groove 6 are communicated with the side wall of punch A1. A left clamping block 7 and a right clamping block 8 adapted to the inner contour of the dovetail groove 6 are respectively arranged in the dovetail groove 6 on both sides of the locking block 5. Both the left clamping block 7 and the right clamping block 8 are slidably connected with the dovetail groove 6 in a detachable structure manner, and the locking block 5 is connected with punch A1 through the left clamping block 7 and the right clamping block 8. One end of a bolt 10 passes through the right clamping block 8, the locking block 5 and is threadedly engaged with the left clamping block 7. The bolt 10 is used to fix the locking block in the dovetail groove through the left and right clamping blocks, and then punch A and punch B are fixedly connected. It is not only simple in structure and convenient to disassemble, but also has a stable connection structure and a reasonable stress form.

[0024] It should be noted that both the locking block 5 and the positioning block 4 are arranged in a cylindrical structure, and the outer peripheral wall of the positioning block 4 fits with the inner peripheral wall of the embedded groove 3, which is convenient for installation.

[0025] Specifically, the groove 9 includes an inverted frustum 91. A fillet structure 92 is arranged between the inverted frustum 91 and punch B2 to improve the structural stiffness. Tapered surfaces 12 adapted to the circumferential surface of the inverted frustum 91 are arranged at both opposite ends of the left clamping block 7 and the right clamping block 8. The tapered surfaces 12 form an upward pulling force on the locking block 5 and hold the locking block 5 tightly, so that punch A1 and punch B2 fit more closely and the deformation is reduced.

[0026] It should be elaborated that the outer ends of the left clamping block 7 and the right clamping block 8 fit with the outer peripheral wall of punch A1, and the connection structure is more reliable.

[0027] A card slot 11 for placing the nut of the bolt 10 is opened at the outer end of the right clamping block 8 to prevent the nut from protruding out of the card slot 11.

[0028] The working principle and working process of the present utility model are as follows:

[0029] During installation, first pick up punch B2, place the positioning block 4 in the embedded groove 3, and then place the locking block 5 in the middle of the dovetail groove 6. Insert the left clamping block 7 and the right clamping block 8 into the dovetail groove 6 from both sides. The tapered surfaces 12 are attached to the outside of the inverted frustum 91. Pass one end of the bolt 10 through the right clamping block 8 and the locking block 5, and rotate the bolt 10 to be threadedly engaged with the left clamping block 7. As the bolt 10 rotates, the two tapered surfaces 12 form an upward pulling force on the inverted frustum 91 until punch A1 and punch B2 fit tightly, and the installation work is completed.

[0030] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "front", "rear", "lower left", "upper right", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation on the protection scope of the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. Although the present utility model is described based on a limited number of embodiments, those skilled in the art in this technical field should understand that within the scope of the present utility model thus described, other embodiments can be envisioned.

Claims

1. A die-forged steel cap split punch structure, comprising a punch A (1), a punch B (2) and a connecting structure, wherein the punch A (1) and the punch B (2) form a coaxial whole through the connecting structure, characterized in that: The connection structure includes: A groove (3) is provided inside the punch A (1), and a positioning block (4) is provided inside the groove (3); A locking block (5), the locking block (5) is arranged between the positioning block (4) and the punch B (2) in a fixed structure manner, and a groove (9) is formed in the circumferential direction at the lower part of the locking block (5); A dovetail groove (6), the dovetail groove (6) is arranged at the lower part of the embedding groove (3) and is connected to the embedding groove (3), and both ends of the dovetail groove (6) are connected to the side wall of the punch A (1); A left clamping block (7) and a right clamping block (8) adapted to the inner contour of the dovetail groove (6), the left clamping block (7) and the right clamping block (8) are respectively arranged in the dovetail groove (6) on both sides of the locking block (5), the left clamping block (7) and the right clamping block (8) are both slidably connected to the dovetail groove (6) in a detachable structural manner, and the locking block (5) is connected to the punch A (1) through the left clamping block (7) and the right clamping block (8); A bolt (10), one end of which passes through the right clamping block (8), the locking block (5) and the left clamping block (7) are connected through threaded engagement.

2. The die-forged steel cap split punch structure according to claim 1 is characterized in that: The locking block (5) and the positioning block (4) are both cylindrical structures, and the outer peripheral wall of the positioning block (4) fits the inner peripheral wall of the embedding groove (3).

3. The die-forged steel cap split punch structure according to claim 1 is characterized in that: The groove (9) comprises an inverted truncated cone (91), and a rounded corner structure (92) is provided between the inverted truncated cone (91) and the punch B (2).

4. The die-forged steel cap split punch structure according to claim 1, characterized in that: The two opposite ends of the left clamping block (7) and the right clamping block (8) are both provided with tapered surfaces (12) adapted to the circumferential surface of the inverted truncated cone (91).

5. The die-forged steel cap split punch structure according to claim 1, characterized in that: The outer ends of the left clamping block (7) and the right clamping block (8) are in contact with the outer peripheral wall of the punch A (1).

6. The die-forged steel cap split punch structure according to claim 1, characterized in that: The outer end of the right clamping block (8) is provided with a clamping groove (11) for placing the nut of the bolt (10).

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