Shaping die for seat special-shaped shaft

Abstract

The utility model provides a shaping die for a seat special-shaped shaft. The shaping die solves the problem that the efficiency of manually trimming burrs on the edges of a special-shaped part and a head part of the special-shaped shaft is low. The positioning hole is formed in the top surface of the lower die; the first notch groove is formed in the top surface of the lower die and is concentric with the positioning hole; the second notch groove is formed in the bottom face of the upper die, and a first chamfer is arranged between the bottom wall and the circumferential inner wall of the second notch groove. The rod portion of the special-shaped shaft is matched with the positioning hole of the lower die for positioning, then the upper die is matched with the lower die, burrs on the periphery of the special-shaped shaft are removed through matching of the second notch groove and the special-shaped portion of the special-shaped shaft, meanwhile, the top of the special-shaped portion is shaped through the first chamfer, and a chamfer is formed in the circumferential direction of the top of the special-shaped portion. The first notch groove is matched with the head of the special-shaped shaft to remove peripheral burrs, and the die can effectively improve the working efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of special-shaped shaft processing, in particular to a shaping die for a special-shaped shaft of a seat. Background Art

[0002] The special-shaped shaft is used to connect the skeleton part of the seat and plays a role of limiting and fixing. Its structure is as Figure 1 shown, and successively includes a special-shaped part 01, a head part 02 and a rod part 03 from top to bottom. The special-shaped shaft is generally formed by cold heading. After cold heading, burrs will remain at the edges of the special-shaped part 01 and the head part 02 of the special-shaped shaft. Generally, it is necessary to manually deburr the edges of the special-shaped part 01 and the head part 02. Manual deburring is not only time-consuming and laborious but also has low efficiency. Summary of the Utility Model

[0003] To overcome the deficiencies of the background art, the utility model provides a shaping die for a special-shaped shaft of a seat, which solves the problem of low efficiency in manually repairing burrs at the edges of the special-shaped part and the head of the special-shaped shaft.

[0004] The technical solution adopted by the utility model is as follows:

[0005] A shaping die for a special-shaped shaft of a seat, including an upper template and a lower template. The upper template is equipped with an upper die, and the lower template is equipped with a lower die. It further includes:

[0006] A positioning hole, arranged on the top surface of the lower die;

[0007] A first cutting groove, arranged on the top surface of the lower die and concentric with the positioning hole;

[0008] A second cutting groove, arranged on the bottom surface of the upper die. There is a first chamfer between the bottom wall and the circumferential inner wall of the second cutting groove.

[0009] There is a second chamfer circumferentially arranged at the top of the second cutting groove.

[0010] There is a third chamfer between the bottom wall and the circumferential inner wall of the first cutting groove.

[0011] At least one side of the second cutting groove is provided with an exhaust groove.

[0012] The exhaust grooves are arranged on the left and right sides of the second cutting groove.

[0013] The lower die includes a first lower die and a second lower die arranged successively from top to bottom. The materials of the first lower die and the upper die are alloy tool steel.

[0014] The bottom of the first lower die is provided with a convex part, the top surface of the second lower die is provided with a positioning groove for cooperating with the convex part, and a positioning pin is arranged between the first lower die and the second lower die.

[0015] The beneficial effects of the utility model are as follows:

[0016] The rod part of the special-shaped shaft is positioned by being matched with the positioning hole of the lower die, and then the upper die is matched with the lower die. The burrs around the special-shaped part are removed by the cooperation of the second cutting groove and the special-shaped part of the special-shaped shaft. At the same time, the first chamfer shapes the top of the special-shaped part, so that a chamfer is formed in the circumferential direction of the top of the special-shaped part. The burrs around the head of the special-shaped shaft are removed by the cooperation of the first cutting groove and the head of the special-shaped shaft. This die can effectively improve the working efficiency. Description of the Drawings

[0017] Figure 1 It is a schematic diagram of a special-shaped shaft.

[0018] Figure 2 It is the intention of the utility model.

[0019] Figure 3 It is a schematic diagram of the upper die of the utility model.

[0020] Figure 4 It is a schematic diagram of the lower die of the utility model.

[0021] Figure 5 It is a schematic diagram of the first lower die of the utility model.

[0022] Figure 6 It is a schematic diagram of the second lower die of the utility model.

[0023] Upper die 1, lower die 2, first lower die 21, second lower die 22, positioning hole 3, first cutting groove 4, second cutting groove 5, first chamfer 6, second chamfer 7, third chamfer 8, exhaust groove 9, convex part 10, positioning groove 11, positioning pin 12. Detailed Implementation Manner

[0024] The following further describes the utility model in conjunction with the drawings and embodiments:

[0025] In the embodiment, as Figure 2 、 Figure 3 、 Figure 4 shown, a shaping die for a special-shaped shaft of a seat includes an upper template and a lower template. The upper template is provided with an upper die 1, and the lower template is provided with a lower die 2. It is characterized in that it further includes:

[0026] A positioning hole 3 is arranged on the top surface of the lower die 2;

[0027] A first cutting groove 4 is arranged on the top surface of the lower die 2 and is concentric with the positioning hole 3;

[0028] A second cutting groove 5 is arranged on the bottom surface of the upper die 1. A first chamfer 6 is arranged between the bottom wall and the circumferential inner wall of the second cutting groove 5.

[0029] Position the rod part 03 of the special-shaped shaft in cooperation with the positioning hole 3 of the lower die 2, and then cooperate the upper die 1 with the lower die 2. Remove the burrs around it by cooperating the second cutting groove 5 with the special-shaped part 01 of the special-shaped shaft. At the same time, the first chamfer 6 shapes the top of the special-shaped part 01 to form a chamfer in the circumferential direction at the top of the special-shaped part 01. The first cutting groove 4 cooperates with the head part 01 of the special-shaped shaft to remove the burrs around it. This die can effectively improve the working efficiency.

[0030] In the embodiment, as Figure 3 shown, a second chamfer 7 is provided in the circumferential direction at the top of the second cutting groove 5. When the upper die 1 descends, a part of the head of the special-shaped shaft can be conveniently cooperated with the second cutting groove 5 through the second chamfer 7.

[0031] In the embodiment, as Figure 4 shown, a third chamfer 8 is provided between the bottom wall and the circumferential inner wall of the first cutting groove 4. The third chamfer 8 is an arc-shaped chamfer, which chamfers and corrects the bottom of the head part 02 of the special-shaped shaft.

[0032] In the embodiment, as Figure 3 shown, at least one side of the second cutting groove 5 is provided with an exhaust groove 9. It is used for exhausting air to prevent the air in the second cutting groove 5 from not being discharged during the shaping process of the special-shaped shaft, resulting in the phenomenon of die bursting.

[0033] In the embodiment, as Figure 3 shown, the exhaust grooves 9 are arranged on the left and right sides of the second cutting groove 5. The gas can be discharged from both sides at the same time to ensure that the gas in the second cutting groove 5 is smoothly discharged.

[0034] In the embodiment, as Figure 2 、 Figure 4 、 Figure 5 、 Figure 6 shown, the lower die 2 includes a first lower die 21 and a second lower die 22 arranged in sequence from top to bottom. The materials of the first lower die 21 and the upper die 1 are alloy tool steel. The materials of the upper die 1 and the first lower die 21 are alloy tool steel to ensure the quality of the die. At the same time, the second lower die 22 can be made of other materials to reduce the manufacturing cost.

[0035] In the embodiment, as Figure 4 、 Figure 5 、 Figure 6 shown, a convex part 10 is provided at the bottom of the first lower die 21, a positioning groove 11 for cooperating with the convex part 10 is provided on the top surface of the second lower die 22, and a positioning pin 12 is provided between the first lower die 21 and the second lower die 22. The cooperation accuracy between the first lower die 21 and the second lower die 22 is high, ensuring the shaping quality of the special-shaped shaft.

[0036] Obviously, the above embodiments of the present utility model are merely examples for explaining the present utility model, rather than limitations on the implementation manners of the present utility model. For those of ordinary skill in the art, other different forms of changes or variations can be made based on the above description. It is not necessary and impossible to list all the implementation manners here. And these obvious changes or variations derived from the essential spirit of the present utility model still fall within the protection scope of the present utility model.

Claims

1. A shaping mold for a seat special-shaped shaft, comprising an upper mold and a lower mold, wherein the upper mold is installed with an upper mold (1), and the lower mold is installed with a lower mold (2), characterized in that: Also includes: A positioning hole (3) is provided on the top surface of the lower mold (2); A first notch groove (4) is arranged on the top surface of the lower mold (2) and is concentric with the positioning hole (3); A No. 2 notch groove (5) is arranged on the bottom surface of the upper mold (1), and a No. 1 chamfer (6) is arranged between the bottom wall and the circumferential inner wall of the No. 2 notch groove (5).

2. The shaping mold for a special-shaped seat shaft according to claim 1, characterized in that: A second chamfer (7) is provided in the circumferential direction of the top of the second notch groove (5).

3. The shaping mold for a special-shaped seat shaft according to claim 1, characterized in that: A third chamfer (8) is provided between the bottom wall and the circumferential inner wall of the first notch groove (4).

4. The shaping mold for a special-shaped seat shaft according to claim 1, characterized in that: At least one side of the No. 2 notch groove (5) is provided with an exhaust groove (9).

5. The shaping mold for a special-shaped seat shaft according to claim 4, characterized in that: The exhaust grooves (9) are arranged on the left and right sides of the No. 2 cutout groove (5).

6. The shaping mold for a special-shaped seat shaft according to claim 1, characterized in that: The lower die (2) comprises a No. 1 lower die (21) and a No. 2 lower die (22) which are arranged in sequence from top to bottom, and the No. 1 lower die (21) and the upper die (1) are made of alloy tool steel.

7. The shaping mold for a special-shaped seat shaft according to claim 6, characterized in that: The bottom of the No. 1 lower mold (21) is provided with a protruding portion (10), the top surface of the No. 2 lower mold (22) is provided with a positioning groove (11) for cooperating with the protruding portion (10), and a positioning pin (12) is provided between the No. 1 lower mold (21) and the No. 2 lower mold (22).

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