CN217095510U

CN217095510U - Rivet button head mould

Info

Publication number: CN217095510U
Application number: CN202220450689.8U
Authority: CN
Inventors: 李艮桥; 倪文娟; 张艳涛
Original assignee: MINISTRY OF COAL INDUSTRY TENTH ENGINEERING DIVISION; China Coal Shaanxi Yulin Energy and Chemical Co Ltd
Current assignee: MINISTRY OF COAL INDUSTRY TENTH ENGINEERING DIVISION; China Coal Shaanxi Yulin Energy and Chemical Co Ltd
Priority date: 2022-03-03
Filing date: 2022-03-03
Publication date: 2022-08-02
Anticipated expiration: 2032-03-03

Abstract

The utility model provides a rivet heading mould, comprises external mold and centre form, and the adventitia is the character cut in bas-relief structure, has rivet blank hole on the die bottom of the adventitia of character cut in bas-relief structure, and the centre form comprises left half centre form and right half centre form, and left half centre form and right half centre form are buckled together and are formed a complete rivet heading mould, and the height of rivet heading mould is the same with the degree of depth of the pit of external mold. Compared with the prior art, the utility model discloses do not block the material when the pier rivet head on the air hammer, not only can make the low height of forging percent of pass, mould reuse rate height. Moreover, the operation is safe and convenient, the efficiency is improved, and the repair working hours and energy are saved.

Description

Rivet button head mould

Technical Field

The utility model relates to a rivet button head mould, especially a rivet button head mould of preparation rivet.

Background

The rivet is the main riveting piece for manufacturing equipment such as a mine car or a bucket. The existing rivet heading die for manufacturing rivets is a cylindrical body with a rivet blank hole and a rivet head pit in the middle, when the rivet head is headed on an air hammer, the die often deforms too much when heading occurs, so that blanks cannot be clamped in the die, the forge piece qualification rate is low, the die is easy to scrap, and the die reuse rate is low. Therefore, the design of the rivet heading die which can ensure low percent of pass of forgings and high reuse rate of the die is the technical problem to be solved at present.

Disclosure of Invention

The utility model aims to solve the technical problem that a rivet button head mould that can make the forging percent of pass low height, mould reuse rate high is provided.

The technical proposal of the utility model for solving the technical problem is that:

a rivet heading die is composed of an outer die and an inner die, wherein the outer die is of a concave structure, rivet blank holes are formed in the die bottom of the outer die of the concave structure, the inner die is composed of a left half inner die and a right half inner die, the left half inner die and the right half inner die are buckled together to form a complete rivet heading die, and the height of the rivet heading die is the same as the depth of a concave pit of the outer die.

As a preferred scheme of the utility model, detain left half centre form and right half centre form totality together and also be the character cut in bas-relief structure, the diameter of the pit of character cut in bas-relief structure is the same with the diameter of rivet head, the degree of depth of pit is the thickness of rivet head, the thickness at the bottom of centre form mould and the mould of external mold bottom thickness sum is the same with the pole length of rivet, have on the bottom of the mould of internal mold with the external mold at the bottom of the mould rivet blank hole the same with the external mold, and the rivet blank hole on the bottom of the mould of the internal mold mould of back assembly is just right with the rivet blank hole on the bottom of the mould of external mold.

The utility model discloses a use method:

when the rivet is headed, the blank is placed into a die, the inner die and the blank are poured out together after heading, the left and right half dies automatically fall off, and the inner die is placed into the outer die and then can be continuously and repeatedly added into the blank heading for use.

Compared with the prior art, the utility model discloses do not block the material when the pier rivet head on the air hammer, not only can make the low height of forging percent of pass, mould reuse rate height. Moreover, the operation is safe and convenient, the efficiency is improved, and the repair working hours and energy are saved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a top view of FIG. 1;

fig. 3 is a schematic view of a structure of a prior art mold.

Detailed Description

As shown in the figure, the rivet upsetting die is composed of an outer die 3 and an inner die, wherein the outer die 3 is of a concave structure, rivet blank holes are formed in the die bottom of the outer die 3 of the concave structure, the inner die is composed of a left half inner die 1 and a right half inner die 2, the left half inner die 1 and the right half inner die 2 are buckled together to form a complete rivet upsetting die, and the height of the rivet upsetting die is the same as the depth of a concave pit of the outer die 3.

The left half inner die 1 and the right half inner die 2 which are buckled together are also of a concave structure, the diameter of a concave pit of the concave structure is the same as that of a rivet head, the depth of the concave pit is the thickness of the rivet head, the sum of the thickness of the bottom of the inner die and the thickness of the bottom of the outer die 3 is the same as the rod length of a rivet, rivet blank holes which are the same as those of the rivet blank holes in the bottom of the outer die 3 are formed in the bottom of the inner die, and the rivet blank holes in the bottom of the inner die are opposite to those in the bottom of the outer die 3 after assembly.

Claims

1. The utility model provides a rivet heading mould, comprises external mold (3) and centre form, characterized by, external mold (3) are the character cut in bas-relief structure, have rivet blank hole on the die bottom of external mold (3) of character cut in bas-relief structure, the centre form comprises left half centre form (1) and right half centre form (2), left half centre form (1) and right half centre form (2) are buckled together and are formed a complete rivet heading mould, the height of rivet heading mould is the same with the degree of depth of the pit of external mold (3).

2. The heading rivet die for rivets as set forth in claim 1, characterized in that the left inner die half (1) and the right inner die half (2) which are fastened together are also of a female-type structure as a whole, the diameter of a recess of the female-type structure is the same as that of the rivet head, the depth of the recess is the thickness of the rivet head, the sum of the thickness of the bottom of the inner die and the thickness of the bottom of the outer die (3) is the same as the rod length of the rivet, rivet blank holes identical to those of the rivet blank holes of the bottom of the outer die (3) are formed in the bottom of the inner die, and the rivet blank holes of the bottom of the inner die are aligned with those of the bottom of the outer die (3) after assembly.