Spring reset mechanism of hardware mold

Abstract

The utility model discloses a spring reset mechanism of a hardware die, which comprises a guide pillar and a sleeve, the guide pillar is mounted on a lower die, the sleeve is mounted on the lower die, and one end of the guide pillar is inserted into the sleeve; an outer spring and an inner spring are sleeved on the outer side of the guide post; the guide column comprises a first column body and a second column body, the first column body is located at the bottom end of the second column body, and the diameter of the first column body is larger than that of the second column body. The inner spring sleeves the outer side of the second column body of the guide column, and two ends of the inner spring respectively abut against the top end of the first column body and the bottom end of the sleeve; the lower portion of the outer spring is sleeved outside the first column body of the guide column, the upper portion of the outer spring is sleeved outside the sleeve, and two ends of the outer spring abut against the top end of the lower die and the bottom end of the upper die respectively. According to the utility model, the outer spring and the inner spring are sleeved on the outer side of the guide pillar, and through the combined action of the outer spring and the inner spring, the resetting effect is improved, and even if one spring fails, the resetting of the die is not influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of stamping dies, and particularly relates to a spring reset mechanism for a hardware die. Background Technique

[0002] A die is a tool used to make formed articles, and mainly realizes the processing of the article shape by changing the material state of the formed material. When the die is in normal use, it is usually used in conjunction with a reset device, and during the demolding process, demolding is often carried out by combining the reset device and the ejector pin. The reset device is required to reset the ejector pin to facilitate the next demolding.

[0003] A stamping die disclosed in the prior art with a publication number of CN210497925U, in which the bottom end of the stamping die head is fixedly connected with a T-shaped bolt, the side end of the T-shaped bolt is fixedly connected with a rotating device, and the inner wall of the blank holder ring is fixedly connected with a blank holding spring.

[0004] The prior art uses a single spring for reset, and its reset effect is poor. Moreover, when the spring fails, reset cannot be carried out. For this reason, we propose a spring reset mechanism for a hardware die. Content of the Utility Model

[0005] The purpose of the utility model is to provide a spring reset mechanism for a hardware die to solve the problems in the prior art that a single spring is used for reset, the reset effect is poor, and when the spring fails, reset cannot be carried out.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A spring reset mechanism for a hardware die includes a guide post and a sleeve. The guide post is installed on the lower die, the sleeve is installed on the lower die, and one end of the guide post is inserted into the sleeve; an outer spring and an inner spring are sleeved outside the guide post; the guide post includes a first column body and a second column body. The first column body is located at the bottom end of the second column body, and the diameter of the first column body is greater than that of the second column body; the inner spring is sleeved outside the second column body of the guide post, and both ends of the inner spring respectively abut against the top end of the first column body and the bottom end of the sleeve; the lower part of the outer spring is sleeved outside the first column body of the guide post, the upper part of the outer spring is sleeved outside the sleeve, and both ends of the outer spring respectively abut against the top end of the lower die and the bottom end of the upper die.

[0007] Preferably, a first annular limit protrusion is arranged on the outer side of the lower part of the first column body, and a second annular limit protrusion is arranged on the outer side of the lower part of the sleeve.

[0008] Preferably, the guide post further includes a limit post, and the guide post is installed at the lower die through the limit post.

[0009] Compared with the prior art, the beneficial effects of the present utility model are as follows: An outer spring and an inner spring are sleeved outside the guide post. Through the combined action of the outer spring and the inner spring, the reset effect is improved, and even if one spring fails, it will not affect the reset of the mold. Description of the Drawings

[0010] The drawings are used to provide a further understanding of the present utility model, and constitute a part of the specification. Together with the embodiments of the present utility model, they are used to explain the present utility model, and do not constitute a limitation to the present utility model. In the drawings:

[0011] Figure 1 is a schematic structural diagram of the present utility model;

[0012] Figure 2 is a schematic structural diagram of the present utility model.

[0013] In the figure: 1, guide post; 2, inner spring; 3, outer spring; 4, sleeve; 11, limit post; 12, first annular limit protrusion; 13, first cylinder; 14, second cylinder; 41, second annular limit protrusion. Detailed Embodiments

[0014] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model. Therefore, the following detailed description of the embodiments of the present utility model provided in the drawings is not intended to limit the scope of the present utility model claimed, but merely represents selected embodiments of the present utility model.

[0015] Please refer to Figure 1-2 , in an embodiment of the present utility model, a spring reset mechanism for a hardware mold includes a guide post 1 and a sleeve 4. The guide post 1 is installed on the lower mold. The guide post 1 further includes a limit post 11. The guide post 1 is installed at the lower mold through the limit post 11. The sleeve 4 is installed on the upper mold. One end of the guide post 1 is inserted into the sleeve 4. An outer spring 3 and an inner spring 2 are sleeved outside the guide post 1. Through the combined action of the outer spring 3 and the inner spring 2, the reset effect is improved, and even if one spring fails, it will not affect the reset of the mold. The guide post 1 includes a first cylinder 13 and a second cylinder 14. The first cylinder 13 is located at the bottom end of the second cylinder 14, and the diameter of the first cylinder 13 is greater than that of the second cylinder 14.

[0016] The inner spring 2 is sleeved outside the second cylinder body 14 of the guide post 1, and both ends of the inner spring 2 abut against the top end of the first cylinder body 13 and the bottom end of the sleeve 4 respectively; a first annular limiting protrusion 12 is arranged on the outer side of the lower part of the first cylinder body 13, and a second annular limiting protrusion 41 is arranged on the outer side of the lower part of the sleeve 4. The limiting protrusions can play a role in limiting both ends of the outer spring 3;

[0017] The lower part of the outer spring 3 is sleeved outside the first cylinder body 13 of the guide post 1, and the upper part of the outer spring 3 is sleeved outside the sleeve 4. Both ends of the outer spring 3 abut against the top end of the lower die and the bottom end of the upper die respectively.

[0018] The working principle of the utility model is as follows: the outer spring 3 and the inner spring 2 are sleeved outside the guide post 1. Through the combined action of the outer spring 3 and the inner spring 2, the reset effect is improved, and even if one spring fails, it will not affect the reset of the mold.

[0019] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A spring return mechanism for a hardware mold, comprising a guide post (1) and a sleeve (4), wherein the guide post (1) is mounted on a lower mold, the sleeve (4) is mounted on the lower mold, and one end of the guide post (1) is inserted into the sleeve (4); characterized in that: The guide column (1) is sleeved with an outer spring (3) and an inner spring (2) on its outer side; the guide column (1) comprises a first column (13) and a second column (14); the first column (13) is located at the bottom end of the second column (14), and the diameter of the first column (13) is greater than the diameter of the second column (14); The inner spring (2) is sleeved on the outer side of the second column (14) of the guide column (1), and the two ends of the inner spring (2) are respectively against the top end of the first column (13) and the bottom end of the sleeve (4); The lower part of the outer spring (3) is sleeved on the outside of the first column (13) of the guide column (1), and the upper part of the outer spring (3) is sleeved on the outside of the sleeve (4). The two ends of the outer spring (3) are respectively against the top end of the lower mold and the bottom end of the upper mold.

2. The spring return mechanism of a hardware mold according to claim 1, characterized in that: A first annular limiting protrusion (12) is arranged on the outer side of the lower part of the first column (13), and a second annular limiting protrusion (41) is arranged on the outer side of the lower part of the sleeve (4).

3. The spring return mechanism of a hardware mold according to claim 1, characterized in that: The guide column (1) further comprises a limiting column (11), and the guide column (1) is installed on the lower mold via the limiting column (11).

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