CN211101366U

CN211101366U - Small belt pulley closed die forging die

Info

Publication number: CN211101366U
Application number: CN201922199008.6U
Authority: CN
Inventors: 王荣胜; 杨红勇; 刘元宝; 赵士杰; 杨勇; 杜朝晖
Original assignee: Anhui Haofang Electromechanics Co Ltd
Current assignee: Anhui Haofang Electromechanics Co Ltd
Priority date: 2019-12-10
Filing date: 2019-12-10
Publication date: 2020-07-28
Anticipated expiration: 2029-12-10

Abstract

The utility model provides a little band pulley closed die forging mould, it includes mould (1), is equipped with corresponding complex lower mould (2) in last mould (1) below, inserts in the nib (2 a) one end of lower mould and is equipped with corresponding complex ejector pin (3), its characterized in that: the lower end face of the upper die (1) is provided with a circular truncated cone (1 a) correspondingly matched with the die hole (2 a), and the circular truncated cone (1 a) is provided with a die head (1 b). The utility model has the advantages of go up mould and lower mould formation airtight no gap can not cause flash to form "overlap" when the compound die to need not increase blank weight, so improved material utilization, can not cause the automatic line manipulator clamping difficulty to influence the subsequent processing simultaneously, reduced the subsequent manufacturing procedure, improved the product yields.

Description

Small belt pulley closed die forging die

The technical field is as follows:

the utility model relates to a die forging technical field, in particular to little band pulley closed die forging mould.

Background art:

at present, as shown in fig. 1, most companies on the market produce small belt pulleys, the used die structures are open die forgings, namely, open structures, and because gaps exist when the upper die 1 and the lower die 2 are closed, the gaps cause flash to form 'flash 5', so that the blank weight is increased, the material utilization rate is reduced, the clamping difficulty of an automatic line manipulator is caused, the subsequent processing is influenced, and meanwhile, the yield of products is reduced due to the fact that the subsequent processing procedures are increased.

The utility model has the following contents:

from the utility model discloses be exactly in order to overcome not enough among the prior art, provide a little pulley closed die forging mould.

The application provides the following technical scheme:

the utility model provides a little pulley closed die forging mould, it includes the mould, is equipped with corresponding complex lower mould in last mould below, inserts at the nib one end of lower mould and is equipped with corresponding complex ejector pin, its characterized in that: the lower end face of the upper die is provided with a circular truncated cone which is correspondingly matched with the die hole, the circular truncated cone is provided with a die head, and the circular truncated cone, the die hole and the ejector rod can form a cavity.

On the basis of the technical scheme, the following further technical scheme can be provided:

the upper die, the circular truncated cone and the die head are coaxially distributed.

Utility model advantage:

the utility model has the advantages of go up mould and lower mould formation airtight no gap can not cause flash to form "overlap" when the compound die to need not increase blank weight, so improved material utilization, can not cause the automatic line manipulator clamping difficulty to influence the subsequent processing simultaneously, reduced the subsequent manufacturing procedure, improved the product yields.

Description of the drawings:

FIG. 1 is a schematic diagram of a prior art configuration;

fig. 2 is a schematic structural diagram of the present invention.

The specific implementation mode is as follows:

as shown in fig. 2, the small pulley closed die forging die comprises an upper die 1, a lower die 2 which is coaxially distributed is arranged below the upper die 1, a die hole 2a is arranged on the lower die 2, and a mandril 3 which is in sliding fit with the wall of the hole is upwards inserted into the lower end of the die hole 2 a. The outer circular surface of the ejector rod 3 is contacted with the hole wall of the lower end part of the die hole 2 a.

The lower end surface of the upper die 1 is protruded with a circular truncated cone 1a correspondingly matched with the die hole 2a, the lower end surface of the circular truncated cone 1a is protruded with a die head 1b, and the die head 1b, the circular truncated cone 1a and the upper die 1 are coaxially distributed and are of an integrated structure. The excircle surface of the circular truncated cone 1a is contacted with the hole wall at the upper end part of the die hole 2a and forms sliding fit with the hole wall. The lower end face of the circular truncated cone 1a is smooth and flat so as to ensure the surface flatness of the product.

The ejector rod 3 is an existing ejector pin component, the length of the ejector rod 3 can be directly shortened by an ejector pin in the prior art, and a new ejector pin shorter than the ejector pin in the prior art can also be installed, so that the ejector rod 3, the circular truncated cone 1a and the die hole 2a can form a cavity.

The working process is as follows:

use the utility model discloses the time, not only can be in the work of stroke adjustable toggle rod type finish forging machine, also can carry out closed die forging on screw press. When the toggle rod type precision forging machine is used, the impact force distortion and the die damage caused by overpressure are avoided by adjusting the position of a bottom dead center; when the closed die forging die is used on a screw press, closed die forging is carried out by adjusting the descending speed and further adjusting the pressure, so that the impact force distortion and the die damage caused by overpressure are avoided.

Firstly, an upper die 1, a lower die 2 and an ejector rod 3 are installed and debugged, a heating bar material is clamped to the ejector rod 3 through an automatic line manipulator, the upper die is driven to move downwards by a machine, and when a circular truncated cone 1a, a die hole 2a and the ejector rod 3 form a cavity, the heating bar material is forged and pressed into a product 4.

When the die is closed, due to the blocking of the round table, a gap can not occur between the lower die 2 and the upper die 1, the heating bar is positioned in the cavity, and therefore flash can not be formed due to flash, the weight of a blank does not need to be increased, the material utilization rate is improved, the subsequent processing caused by the difficulty in clamping of the automatic line manipulator can not be influenced, the subsequent processing procedures are reduced, and the yield of a product 4 is improved.

Claims

1. The utility model provides a little pulley closed die forging mould, it includes mould (1), is equipped with corresponding complex lower mould (2) in last mould (1) below, inserts at the nib (2 a) one end of lower mould and is equipped with and corresponds complex ejector pin (3), its characterized in that: the lower end face of the upper die (1) is provided with a circular truncated cone (1 a) correspondingly matched with the die hole (2 a), the circular truncated cone (1 a) is provided with a die head (1 b), and the circular truncated cone (1 a), the die hole (2 a) and the ejector rod (3) can form a cavity.

2. The small pulley closed die forging die set forth in claim 1, wherein: the upper die (1), the circular truncated cone (1 a) and the die head (1 b) are coaxially distributed.