CN214866693U

CN214866693U - Novel wave spring forming die

Info

Publication number: CN214866693U
Application number: CN202121019057.8U
Authority: CN
Inventors: 李龙; 周兴友; 袁大传; 徐杰
Original assignee: SHANGHAI HEGONG DISC SPRING MANUFACTURING CO LTD
Current assignee: SHANGHAI HEGONG DISC SPRING MANUFACTURING CO LTD
Priority date: 2021-05-13
Filing date: 2021-05-13
Publication date: 2021-11-26
Anticipated expiration: 2031-05-13

Abstract

The utility model discloses a novel wave spring forming die, which comprises an upper die and a lower die, wherein the upper die and the lower die are both hollow, and axial guide posts are axially arranged in the middle parts of the upper die and the lower die; the wave crest of the upper die and the wave trough of the lower die or the outer diameter side walls of the wave troughs of the upper die and the wave crests of the lower die are provided with square grooves, the upper square groove and the lower square groove are in the same vertical direction, and limiting guide keys are arranged in the upper square groove and the lower square groove in the vertical direction; the bottom surface of the upper die is provided with a wavy annular upper forming surface; the top surface of the lower die is provided with a wavy annular lower forming surface; the utility model has the advantages that any one of the upper square groove or the lower square groove is fixedly connected with the limiting guide key, and the loose connection mode of the unfixed side well prevents the upper die and the lower die from rotating due to extrusion and other reasons through the fixed guide operation, so that the phenomenon that the heights and the sizes of the wave crests or the wave troughs are inconsistent after the forming of the formed wave spring can not occur; the axial guidance of the axial guide posts prevents radial deflection of the die.

Description

Novel wave spring forming die

Technical Field

The utility model relates to a wave spring mold processing especially relates to a novel wave spring forming die.

Background

The wave spring is a commonly used spring and is commonly used in the fields of valves, pumps and the like, the wave spring is divided into a closed wave spring and an open wave spring, the conventional closed wave spring is formed by stamping a circular ring-shaped spring blank by adopting a male die and a female die, however, the spring blank is easily rotated by a certain angle (dislocation for short) in the stamping process, so that the heights and the sizes of all wave crests or wave troughs of the formed wave spring are inconsistent, namely the general warping phenomenon, many parameters of the formed wave spring can not meet the force value of the required wave spring and the yield is low.

SUMMERY OF THE UTILITY MODEL

In view of this, the technical problem to be solved by the present invention is: the novel wave spring forming die is used for realizing circumferential limiting and radial limiting of the wave spring.

In order to achieve the above purpose, the utility model adopts the following technical scheme to realize:

a novel wave spring forming die comprises an upper die and a lower die, wherein the upper die and the lower die are both hollow, axial guide posts are axially arranged in the middle of the upper die and the lower die, an upper square groove is formed in the outer diameter side wall of the upper die, a lower square groove is formed in the outer diameter side wall of the lower die, the upper square groove and the lower square groove are in the same vertical direction, and limiting guide keys are arranged in the upper square groove and the lower square groove in the vertical direction; the bottom surface of the upper die is provided with a wavy annular upper forming surface; the top surface of the lower die is provided with a wavy annular lower forming surface.

Preferably, the upper square groove is located on the outer side wall of the wave crest of the upper die, and the lower square groove is located on the outer side wall of the wave trough of the lower die.

Preferably, the upper square groove is located on the outer side wall of the wave trough of the upper die, and the lower square groove is located on the outer side wall of the wave crest of the lower die.

Preferably, the upper square groove and the lower square groove have the same width, the limiting guide key is square, the limiting guide key is fixed in the upper square groove and movably connected with the lower square groove, and the limiting guide key is in clearance fit with the lower square groove; the limiting guide key is fixed in the upper groove by welding.

Preferably, the upper square groove and the lower square groove have the same width, the limiting guide key is square, the limiting guide key is fixed in the lower square groove and movably connected with the upper square groove, and the limiting guide key is in clearance fit with the upper square groove; the limiting guide key is fixed in the lower square groove through welding.

Preferably, the outer diameter of the axial guide column is respectively contacted with the annular inner side of the upper die and the annular inner side of the lower die to form axial guide; the axial guide post is a cylinder and is fixed on a fixing plate matched with the lower die.

According to the above technical scheme, the beneficial effects of the utility model are that:

compared with the prior art, the method has the advantages that,

1. the utility model discloses a square groove is established to the crest of last mould, the trough of lower mould or the trough of last mould, the crest department external diameter lateral wall of lower mould to through top side groove or any party in square groove down and spacing direction key fixed connection, the operation of fixed direction is passed through to unfixed side swing joint's mode, fine upper and lower mould that has prevented causes the mould to rotate because of reasons such as extrusion, thereby wave spring after the shaping just can not appear each crest or trough height and size inconsistent phenomenon (warpage phenomenon) after shaping.

2. The utility model discloses an axial direction of axial guide post prevents the radial skew of mould.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a schematic structural view of the lower mold of the embodiment of the present invention with an axial guide post installed in the middle;

FIG. 3 is a schematic structural view of a lower mold in an embodiment of the present invention;

fig. 4 is a schematic structural view of the upper die after being turned over in the embodiment of the present invention;

fig. 5 is a schematic cross-sectional view of a limit guide key according to an embodiment of the present invention.

Detailed Description

For those skilled in the art to further understand the features and technical contents of the present invention, refer to the following detailed description and accompanying drawings.

As shown in fig. 1-5, a novel wave spring forming die comprises an upper die 1 and a lower die 2, wherein the upper die 1 and the lower die 2 are both hollow, an axial guide post 3 axially arranged is arranged in the middle of the upper die 1 and the lower die 2, an upper square groove 12 is arranged on the outer side wall of the trough of the upper die 1, a lower square groove 22 is arranged on the outer side wall of the crest of the lower die 2, the upper square groove 12 and the lower square groove 22 are in the same vertical direction, the groove depth is the same, the groove width is the same, and a limit guide key 4 is welded and fixed in the lower square groove 22 in the vertical direction; the bottom surface of the upper die 1 is provided with a wave-shaped annular upper forming surface 11; the top surface of the lower die 2 is provided with a wave-shaped annular lower forming surface 21;

the limiting guide key 4 is square, the limiting guide key 4 is welded and fixed in the lower square groove 22 and is movably connected with the upper square groove 12, and the limiting guide key 4 is in clearance fit with the upper square groove 12.

As shown in fig. 1-2, the outer diameter of the axial guide column 3 is respectively contacted with the annular inner side of the upper die and the annular inner side of the lower die to form axial guide; the axial guide post 3 is a cylinder and is fixed on a fixing plate matched with the lower die 2 during use.

Spacing direction key 4 is fixed with lower mould 2, has guaranteed that spacing direction key 4 is swing joint with last mould 2, and spacing direction key 4 and top side shape groove 12 clearance fit when taking shape, through the operation of fixed direction, fine upper and lower mould that has prevented causes the mould to rotate because of reasons such as extrusion to wave spring after the shaping just can not appear taking shape each crest or trough height and size inconsistent phenomenon (warpage phenomenon) after.

The basic principles, main features and advantages of the present invention compared to the prior art have been described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the principles of the present invention may be applied to any other embodiment without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a novel wave spring forming die, includes mould and lower mould, its characterized in that: the upper die and the lower die are both hollow, axial guide posts are axially arranged in the middle of the upper die and the lower die, an upper square groove is formed in the outer diameter side wall of the upper die, a lower square groove is formed in the outer diameter side wall of the lower die, the upper square groove and the lower square groove are in the same vertical direction, and limiting guide keys are arranged in the upper square groove and the lower square groove in the vertical direction; the bottom surface of the upper die is provided with a wavy annular upper forming surface; the top surface of the lower die is provided with a wavy annular lower forming surface.

2. The novel wave spring forming die of claim 1, wherein: the upper square groove is positioned on the outer side wall of the wave crest of the upper die, and the lower square groove is positioned on the outer side wall of the wave trough of the lower die.

3. The novel wave spring forming die of claim 1, wherein: the upper square groove is positioned on the outer side wall of the wave trough of the upper die, and the lower square groove is positioned on the outer side wall of the wave crest of the lower die.

4. The novel wave spring forming die of claim 1, wherein: the width of the upper square groove is the same as that of the lower square groove, the limiting guide key is square, the limiting guide key is fixed in the upper square groove and movably connected with the lower square groove, and the limiting guide key is in clearance fit with the lower square groove.

5. The novel wave spring forming die of claim 1, wherein: the width of square groove is the same under with the square groove in the top, spacing direction key is for being square, spacing direction key is fixed in square inslot and with top groove swing joint down, spacing direction key and top groove clearance fit.

6. The novel wave spring forming die of claim 1, wherein: the outer diameter of the axial guide column is respectively contacted with the annular inner side of the upper die and the annular inner side of the lower die to form axial guide.