Pin shaft cold heading processing die

Abstract

The utility model discloses a pin shaft cold heading processing die, include: at least one shaping die main part, a plurality of high mould main part, workstation, a plurality of top rod, the workstation is opened at least one first passageway, be provided with top rod in the first passageway, and top rod end portion is opened to have the first shaping face, the workstation is opened a plurality of first installation perforation, the shaping die main part is opened second passageway, the inner wall of second passageway is opened to have the second shaping face, the shaping die main part is opened second installation perforation, the high mould is opened third passageway and a plurality of third installation perforation, still include fastener, the fastener passes through second installation perforation, third installation perforation, first installation perforation after screw thread connection bolt, the high mould main part height is not one, through the combination of multiple moulds, can realize for the different length axle pin cold heading processing.

Description

Technical Field

[0001] This utility model belongs to the field of cold heading technology, specifically relating to a cold heading die for a pin shaft. Background Technology

[0002] Pins are a type of standardized fastener that can provide both static fixation and relative movement with the connected parts. They are primarily used at the hinge joints of two parts to form a hinge connection. Pins are typically locked with cotter pins, ensuring reliable operation and easy disassembly. Currently, cold heading machines are widely used for processing pins. However, existing pins vary in length. If the diameter is the same but the length is inconsistent, an entire mold needs to be replaced. Therefore, it is crucial to develop a cold heading mold for pins that overcomes these shortcomings. Utility Model Content

[0003] To solve at least one of the above-mentioned technical problems, this utility model provides a cold heading die for a pin shaft, comprising: at least one forming die body, several raised die bodies, a worktable, and several ejector pins;

[0004] At least one first channel is provided on the workbench, and a push rod is provided in the first channel. A first shaping surface is provided at the end of the push rod.

[0005] The workbench has several first mounting holes, the shaping mold body has a second channel, the inner wall of the second channel has a second shaping surface, the shaping mold body has a second mounting hole, the heightening mold has a third channel and several third mounting holes, and also includes fasteners. The fasteners pass through the second mounting holes, the third mounting holes, and the first mounting holes and are then threaded onto bolts. The height of the heightening mold body is not uniform.

[0006] Through the above technical solution, this utility model can achieve cold heading of shaft pins of different lengths by combining multiple molds.

[0007] A retaining spring washer is installed between the limiting cap of the fastener and the top surface of the second mounting hole. The fastener and the bolt cooperate to deform the retaining spring washer into a plane to achieve stable installation.

[0008] By using the above technical solution, the connection stability can be increased and the mold, worktable, and mold body height can be reduced by tightening the fasteners and bolts to make the originally misaligned ends of the snap ring washer into the same plane.

[0009] As a preferred embodiment of the above-mentioned technical solution, it further includes a fixed bracket fixed to the bottom of the worktable, a cylinder fixed on the fixed bracket, and a push rod fixed to the output end of the cylinder. The diameter of the third channel is larger than the diameter of the first channel, and the end of the push rod is adapted to the inner wall shape of the first channel.

[0010] The cylinder of this invention can use an existing cylinder with a pilot speed control valve and a three-position five-way intermediate exhaust valve to adjust the cylinder to stop at the intermediate position.

[0011] With the above technical solution, since the diameter of the third channel is larger than that of the first channel, the debris located in the first channel can fall when the push rod moves downward.

[0012] It also includes an upper die, on the bottom surface of which a third shaping surface is formed. A support frame is fixed on the worktable, and a stamping machine is fixed on the support frame. The upper die is fixed to the output end of the stamping machine.

[0013] Compared with the prior art, the advantages of this utility model are: the utility model has a simple structure and can process pins of various lengths by combining multiple molds. Attached Figure Description

[0014] Figure 1 This is a cross-sectional schematic diagram of the present invention;

[0015] Figure label:

[0016] 1. Shaping mold body; 11. Second channel; 12. Second shaping surface; 13. Second mounting hole;

[0017] 2. Increase the height of the mold body; 21. Third channel; 22. Third mounting hole;

[0018] 3. Workbench; 31. First channel; 32. First mounting hole; 33. Fixed bracket; 34. Cylinder; 35. Third forming surface; 36. Upper die; 38. Support frame; 39. Press;

[0019] 4. Top rod; 41. First shaping surface;

[0020] 51 Fasteners; 52 Bolts; 53 Snap ring washers. Detailed Implementation

[0021] To enable those skilled in the art to better understand this utility model and to more clearly define the scope of protection claimed by this utility model, the present utility model is described in detail below with reference to certain specific embodiments. It should be noted that the following are only some specific embodiments of the present utility model concept, and are only a part of the embodiments of this utility model. The specific and direct description of related structures is only for the convenience of understanding this utility model, and the specific features do not necessarily or directly limit the scope of implementation of this utility model.

[0022] Referring to the accompanying drawings, the present invention adopts the following technical solution: the present invention provides a cold heading die for a pin shaft, comprising: at least one forming die body 1, several raised die bodies 2, a worktable 3, and several push rods 4;

[0023] At least one first channel 31 is provided on the workbench 3, and a top rod 4 is provided in the first channel 31. A first shaping surface 41 is provided at the end of the top rod 4.

[0024] The workbench 3 has several first mounting holes 32. The shaping mold body 1 has a second channel 11. The inner wall of the second channel 11 has a second shaping surface 12. The shaping mold body 1 has a second mounting hole 13. The heightening mold has a third channel 21 and several third mounting holes 22. It also includes a fastener 51. The fastener 51 passes through the second mounting hole 13, the third mounting hole 22 and the first mounting hole 32 and is then threaded to a bolt 52. The height of the heightening mold body 2 is not uniform.

[0025] Through the above technical solution, this utility model can achieve cold heading of shaft pins of different lengths by combining multiple molds.

[0026] A retaining spring washer 53 is installed between the limiting cap of the fastener 51 and the top surface of the second mounting hole. The fastener 51 and the bolt 52 cooperate to deform the retaining spring washer 53 into a plane to achieve stable installation.

[0027] By using the above technical solution, the connection stability can be increased and the mold of the forming mold, the worktable 3 and the mold body 2 can be reduced by tightening the fastener 51 and the bolt 52 to make the originally misaligned ends of the snap ring washer 53 become the same plane.

[0028] As a preferred embodiment of the above-mentioned technical solution, it further includes a fixed bracket 33 fixed to the bottom of the worktable 3, a cylinder 34 fixed on the fixed bracket 33, and a push rod 4 fixed to the output end of the cylinder 34. The diameter of the third channel 21 is larger than the diameter of the first channel 31, and the end of the push rod 4 is adapted to the inner wall shape of the first channel 31.

[0029] The cylinder 34 of this invention can use an existing cylinder 34 with a pilot speed control valve and a three-position five-way intermediate exhaust valve to adjust the cylinder 34 to stop at the intermediate position.

[0030] With the above technical solution, since the diameter of the third channel 21 is larger than the diameter of the first channel 31, the debris located in the first channel 31 can fall when the top rod 4 moves downward.

[0031] It also includes an upper die 36, on the bottom surface of which a third shaping surface 35 is formed. A support frame 38 is fixed on the worktable 3, and a stamping machine 39 is fixed on the support frame 38. The upper die 36 is fixed to the output end of the stamping machine 39.

[0032] Compared with the prior art, the advantages of this utility model are: the utility model has a simple structure and can process pins of various lengths by combining multiple molds.

[0033] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, such that a process, article, or apparatus / device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to those processes, articles, or apparatus / devices.

[0034] In the description of this utility model, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element 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. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0035] The technical solution of this utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.

Claims

1. A cold heading die for a pin, characterized in that: Includes: at least one forming mold body (1), several raised mold bodies (2), a worktable (3), and several ejector pins (4); The workbench (3) is provided with at least one first channel (31), and a top rod (4) is provided in the first channel (31). The top rod (4) has a first shaping surface (41) at its end. The workbench (3) has several first mounting holes (32), the shaping mold body (1) has a second channel (11), the inner wall of the second channel (11) has a second shaping surface (12), the shaping mold body (1) has a second mounting hole (13), the heightening mold has a third channel (21) and several third mounting holes (22), and also includes fasteners (51). The fasteners (51) pass through the second mounting hole (13), the third mounting hole (22) and the first mounting hole (32) and are then threaded to connect to bolts (52). The height of the heightening mold body (2) is not uniform.

2. The cold heading die for pins according to claim 1, characterized in that: A retaining ring washer (53) is installed between the limiting cap of the fastener (51) and the top surface of the second mounting hole. The fastener (51) and the bolt (52) cooperate to deform the retaining ring washer (53) into a plane to achieve stable installation.

3. The cold heading die for pins according to claim 1, characterized in that: It also includes a fixed bracket (33) fixed to the bottom of the workbench (3), on which a cylinder (34) is fixed, and the push rod (4) is fixed to the output end of the cylinder (34).

4. The cold heading die for pins according to claim 2, characterized in that: The diameter of the third channel (21) is larger than that of the first channel (31), and the end of the top rod (4) is adapted to the inner wall shape of the first channel (31).

5. The cold heading die for pins according to claim 1, characterized in that: It also includes an upper mold (36), on the bottom surface of which a third shaping surface (35) is provided.

6. The cold heading die for pins according to claim 5, characterized in that: A support frame (38) is fixed on the workbench (3), and a stamping machine (39) is fixed on the support frame (38). The upper die (36) is fixed at the output end of the stamping machine (39).

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