CN212636288U

CN212636288U - Novel inlay needle fracture mould of preventing

Info

Publication number: CN212636288U
Application number: CN202020910066.5U
Authority: CN
Inventors: 汪晶; 孙福春; 赵东海
Original assignee: Punch Industry Dalian Co ltd
Current assignee: Punch Industry Dalian Co ltd
Priority date: 2020-05-27
Filing date: 2020-05-27
Publication date: 2021-03-02
Anticipated expiration: 2030-05-27

Abstract

The utility model relates to a mould shaping field, concretely relates to novel prevent inlaying needle fracture mould. An insert pin accommodating cavity is formed in the die, and an insert pin is fixedly arranged in the insert pin accommodating cavity; the insert needle comprises a forming part, a positioning part and fixing parts, wherein one end of the positioning part is connected with the forming part, the other end of the positioning part is connected with the fixing part, one end of the positioning part, which is close to the forming part, is provided with at least two annular grooves; the annular groove is located the location cooperation portion, and the fixed part is located the fixed coordination portion, has the clearance between location portion and the location cooperation portion, and the clearance width is from being close to shaping portion one end to being close to fixed part one end and progressively diminishing gradually. The mold insert pin adopts a gap between the positioning part and the positioning matching part, the gap is the largest near the forming part, and gradually decreases near the fixing part, so that the phenomenon that the gap is too large and enters a medium can be prevented, and the effect of relieving stress cannot be achieved when the gap is too small; the depth of the ring groove is 5% -10% of the diameter of the positioning part, so that the influence of too deep groove on the strength of the inserted pin is prevented, and too shallow groove can not play a role in relieving force.

Description

Novel inlay needle fracture mould of preventing

Technical Field

The utility model relates to a mould shaping field, concretely relates to novel prevent inlaying needle fracture mould.

Background

The die forming part is widely applied to various fields of automobiles, aviation, aerospace and the like, and is an important link as a source forming die of the forming part, the working efficiency of the formed die is directly related to each accessory in the die, and the use of a die insert pin directly determines the working efficiency of the forming die. The problems of bending, breaking, aluminum adhesion and the like can occur due to stress concentration of an insert pin in a die in the product forming process, and the service life and the production efficiency of the forming die are influenced.

Chinese patent [ CN201620457462.0] discloses a bending fracture-preventing mold core, which adopts an annular stress relief groove arranged on the outer surface of the core matching part, the device is mainly used for solving the problem that the core is easy to bend and fracture due to stress concentration, but the stress relief effect of the stress relief groove cannot be maximized, and the stress relief is limited.

SUMMERY OF THE UTILITY MODEL

Bending, fracture scheduling problem can appear in the use for inlaying the needle in solving above-mentioned mould, the utility model provides a novel prevent inlaying needle fracture mould, solution stress concentration problem that can be better.

The utility model discloses a realize that the technical scheme that above-mentioned purpose adopted is: a novel inlay pin fracture prevention die is provided with an inlay pin accommodating cavity, wherein an inlay pin is fixedly arranged in the inlay pin accommodating cavity; the insert pin comprises a forming part, a positioning part and a fixing part, wherein one end of the positioning part is connected with the forming part, the other end of the positioning part is connected with the fixing part, one end of the positioning part, which is close to the forming part, is provided with at least two ring grooves; inlay the inside in needle holding chamber in arranging in location portion and the fixed part of needle, inlay needle holding chamber and include location fit portion and fixed cooperation portion, the annular is located location fit portion, and the fixed part is located fixed cooperation portion, have the clearance between location portion and the location fit portion, the clearance width is from being close to shaping portion one end to being close to fixed part one end and diminishing gradually.

Furthermore, both sides of the ring groove are fillets.

Further, the positioning portion is cylindrical.

Further, the width of the gap is 0.02-0.04 MM.

Furthermore, the first groove is arranged in the position, 3-5MM away from the root of the forming part, of the annular groove, and the depth of the annular groove is 5% -10% of the diameter of the positioning part.

Furthermore, when the thickness of the positioning matching part is 30MM, 2 ring grooves are arranged; when the thickness of the positioning matching part is 30-50 MM, 3 ring grooves are arranged; when the thickness of the positioning matching part is more than 50MM, 4 ring grooves are arranged.

The utility model discloses a technological effect and advantage: the die provided by the utility model is suitable for all forming dies, and the die casting and plastic rubber dies are suitable; the positioning part and the positioning matching part are provided with dimensional tolerance and matching clearance in a segmented manner, the clearance close to the forming part is the largest, the clearance close to the fixing part is gradually reduced, the phenomenon that the clearance is too large and enters a medium can be prevented, and the effect of relieving stress is not achieved when the clearance is too small; the two sides of the ring groove are provided with round corners, so that a sharp corner part is not needed, and stress concentration can be reduced; the depth of the ring groove is 5% -10% of the diameter of the positioning part, so that the influence of too deep groove on the strength of the inserted pin is prevented, and too shallow groove can not play a role in relieving force. The service life times of the mold in the embodiment are 10000-15000 times, and the service life times of the common mold are about 3000-5000 times, so that the service life of the mold is greatly prolonged.

Drawings

FIG. 1 is a schematic structural view of a novel insert pin breakage prevention mold;

wherein: 1-forming part, 2-positioning part, 3-ring groove, 4-fixing part, 5-positioning matching part and 6-fixing matching part.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and examples.

Example (b):

as shown in fig. 1, a novel mold for preventing the breakage of an insert pin is provided with an insert pin accommodating cavity, and an insert pin is fixedly installed in the insert pin accommodating cavity; the insert needle comprises a forming part 1, a positioning part 2 and a fixing part 4, one end of the positioning part 2 is connected with the forming part 1, the other end of the positioning part 2 is connected with the fixing part 4, the positioning part 2 is cylindrical, a ring groove 3 is arranged at one end of the positioning part 2 close to the forming part 1, at least two ring grooves 3 are arranged, the number of the ring grooves 3 is determined according to the thickness T of a positioning matching

part

5, 2 ring grooves 3 are arranged when the thickness T of the positioning matching part 5 is 30MM, 3 ring grooves 3 are arranged when the thickness T of the positioning matching part 5 is 30-50 MM, 4 ring grooves 3 are arranged when the thickness T of the positioning matching part 5 is more than 50MM, and the like, in the embodiment, 3 ring grooves 3 are arranged, the first groove is arranged at the distance from the ring groove 3 to the root part 3-5 of the forming part 1, the groove depth of the ring groove 3 is 5% -, better stress dispersion; the positioning part 2 and the fixing part 4 of the insert pin are arranged in the insert pin accommodating cavity, the insert pin accommodating cavity comprises a positioning matching part 5 and a fixing matching part 6, the annular groove 3 is positioned in the positioning matching part 5, the fixing part 4 is positioned in the fixing matching part 6, the fixing effect can be enhanced, a gap is formed between the positioning part 2 and the positioning matching part 5, the width of the gap is 0.02-0.04MM, and the width of the gap gradually decreases from one end close to the forming part 1 to one end close to the fixing part 4.

In the use process of the die, the generated stress is dispersed at the front end of the positioning part 2, and the stress is dispersed through the combined action of the gap formed between the positioning part 2 and the positioning matching part 5 and the ring groove 3, so that the stress concentration is prevented, the service life of an insert pin in the die is prolonged, and the service life of the die is prolonged.

While the embodiments of the invention have been described above, it is not intended to be limited to the details shown, or described, but rather to cover all modifications, which would come within the scope of the appended claims, and all changes which come within the meaning and range of equivalency of the art are therefore intended to be embraced therein.

Claims

1. The utility model provides a novel prevent inlaying needle fracture mould which characterized in that: an insert pin accommodating cavity is formed in the die, and an insert pin is fixedly arranged in the insert pin accommodating cavity; the insert pin comprises a forming part, a positioning part and a fixing part, wherein one end of the positioning part is connected with the forming part, the other end of the positioning part is connected with the fixing part, one end of the positioning part, which is close to the forming part, is provided with at least two ring grooves; inlay the inside in needle holding chamber in arranging in location portion and the fixed part of needle, inlay needle holding chamber and include location fit portion and fixed cooperation portion, the annular is located location fit portion, and the fixed part is located fixed cooperation portion, have the clearance between location portion and the location fit portion, the clearance width is from being close to shaping portion one end to being close to fixed part one end and diminishing gradually.

2. The novel insert pin breakage preventing die as claimed in claim 1, wherein: the annular groove both sides are the fillet.

3. The novel insert pin breakage preventing die as claimed in claim 1, wherein: the positioning part is cylindrical.

4. The novel insert pin breakage preventing die as claimed in claim 1, wherein: the width of the gap is 0.02-0.04 MM.

5. The novel insert pin breakage preventing die as claimed in claim 1, wherein: the annular groove is 3-5MM away from the root of the forming part and is provided with a first groove, and the depth of the annular groove is 5% -10% of the diameter of the positioning part.

6. The novel insert pin breakage preventing die as claimed in claim 1, wherein: when the thickness of the positioning matching part is 30MM, 2 ring grooves are arranged; when the thickness of the positioning matching part is 30-50 MM, 3 ring grooves are arranged; when the thickness of the positioning matching part is more than 50MM, 4 ring grooves are arranged.