CN210966409U

CN210966409U - Cold extrusion device for engine starting motor gear

Info

Publication number: CN210966409U
Application number: CN201921615777.3U
Authority: CN
Inventors: 李锋; 商志俊; 于瑞彬
Original assignee: Yancheng Lingchi Machinery Co ltd
Current assignee: Yancheng Lingchi Machinery Co ltd
Priority date: 2019-09-26
Filing date: 2019-09-26
Publication date: 2020-07-10
Anticipated expiration: 2029-09-26

Abstract

The utility model discloses a cold extrusion device of engine starter motor gear, including the die holder, the up end symmetry of die holder is provided with two flexible gag lever post, two the common fixedly connected with upper die base of up end of flexible gag lever post, the guide way has been seted up to the center department of die holder, the bottom face fixed mounting of guide way has the die, the center department of die has seted up the die cavity, the vertical fixedly connected with nose bar of center department of die cavity bottom, sliding connection has the loading board that resets in the die cavity. The utility model discloses, the peripheral material of gear can the adhesion at the up end of die, and the in-process that resets and push down of loading board can extrude the air in the die cavity, and the air in the die cavity can upwards spout through the second venthole, leads to the fact certain impact force to the peripheral bottom side wall of blank, has avoided processing back peripheral waste material adhesion of blank at the up end of die, and then the clearance of the waste material of being convenient for.

Description

Cold extrusion device for engine starting motor gear

Technical Field

The utility model relates to a gear technical field especially relates to an engine starting motor gear cold extrusion device.

Background

The gear is a typical transmission part, and the gear is widely applied to transmission and is an indispensable part in various mechanical equipment. The traditional gear production method mainly comprises two types of cutting machining and plastic forming machining, but the existing industrial production still mainly adopts cutting machining, so that a lot of materials are wasted by the machining method of the 'material reducing' gear for removing redundant metal materials, in order to save the material waste in the machining process, the existing gear machining mode is cold extrusion machining, and the existing cold extrusion machining is to place a metal blank in a lower concave die and extrude the metal blank into the gear through an upper convex die. However, after the blank is processed into the gear, the rest of the blank after being processed at the periphery can be adhered to the upper end surface of the female die due to the pressure of the male die, which causes great difficulty in cleaning the following waste materials, and further delays the gear processing process. Therefore, the cold extrusion device for the gear of the engine starting motor solves the problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving but behind the blank processing gear, remaining behind the peripheral processing of blank because the pressure of terrace die can the adhesion in the up end of die, has led to the fact very big difficulty for the clearance of waste material at the back, and then has delayed the shortcoming of gear machining's process, and the cold extrusion device of engine starter motor gear who provides.

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

a cold extrusion device for a gear of an engine starting motor comprises a lower die base, wherein two telescopic limiting rods are symmetrically arranged on the upper end surface of the lower die base, the upper end surfaces of the two telescopic limiting rods are fixedly connected with an upper die base together, a guide groove is formed in the center of the lower die base, a female die is fixedly arranged on the bottom end surface of the guide groove, a female die groove is formed in the center of the female die, a convex rod is vertically and fixedly connected with the center of the bottom end of the female die groove, a reset bearing plate is slidably connected in the female die groove, a sliding hole matched with the convex rod is formed in the center of the reset bearing plate, the convex rod is slidably connected in the sliding hole, reset springs are fixedly connected in an annular row with the bottom end surface of the reset bearing plate at equal intervals, the lower end of each reset spring is fixedly connected to the bottom end surface of the female die groove, and a first, the lower extreme of first venthole runs through the lateral wall and the die inslot of nose bar and communicates with each other, a plurality of second ventholes have been seted up to the three ring rows in inside wall of die groove, every the up end of second venthole runs through the up end of die and communicates with each other with the external world, the up end symmetry fixed mounting of die holder has two flexible gag lever post, every flexible gag lever post, two the common fixed mounting of up end of flexible gag lever post has the upper die base, the center department fixed mounting of the lower extreme of upper die base has the top die, the top die is located the guide way and matches directly over and with the guide way, the center department fixed mounting of the lower extreme of top die has the terrace die, the terrace die matches with the die groove.

Compared with the prior art, the beneficial effects of the utility model are that:

firstly, a blank is placed on a female die, then an upper die base pushes a male die at the lower end of an upper die to move downwards to extrude the blank on a concave die of a guide groove, so that the central part of the blank sinks and extrudes a reset bearing plate into a female die groove, and further a reset spring is compressed, in the process, materials at the periphery of a gear can be adhered to the upper end surface of the female die, air in the female die groove can be extruded in the process that the reset bearing plate is pressed downwards, the air in the female die groove can be upwards sprayed out through a second air outlet hole to cause certain impact force to the bottom side wall at the periphery of the blank, the waste materials at the periphery of the processed blank are prevented from being adhered to the upper end surface of the female die, the waste materials are convenient to clean, and when the compressed air is upwards sprayed out through a first air outlet hole, the impact force is generated on the blank waste materials at the upper end of a male rod, the, after the machining is finished, the upper die base drives the upper pressing die and the male die to leave the guide groove, at the moment, the elastic force generated by the reset spring in a compressed state can push the reset bearing plate to move upwards, and then the gear on the upper end face of the reset bearing plate is pushed to move upwards, so that the gear can be taken out conveniently.

Drawings

Fig. 1 is a schematic structural view of a gear cold extrusion device of an engine starting motor provided by the present invention;

FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1;

fig. 3 is the utility model provides a overlook schematic structure diagram of die in engine starting motor gear cold extrusion device.

In the figure: the die comprises a lower die holder 1, a telescopic limiting rod 2, an upper pressing die 3, a male die 4, a guide groove 5, a female die groove 6, a male rod 7, a first air outlet hole 8, a reset bearing plate 9, a reset spring 10, a female die 11, a second air outlet hole 12 and an upper die holder 13.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Referring to fig. 1-3, an engine starting motor gear cold extrusion device comprises a lower die holder 1, wherein two telescopic limiting rods 2 are symmetrically and fixedly mounted on the upper end surface of the lower die holder 1, an upper die holder 13 is fixedly mounted on the upper end surfaces of the two telescopic limiting rods 2, an upper die 3 is fixedly mounted at the center of the lower end of the upper die holder 13, a male die 4 is fixedly mounted at the center of the lower end surface of the upper die 3, the male die 4 is matched with a female die groove 6, and the upper die 3 is positioned right above a guide groove 5 and matched with the guide groove 5; two telescopic limiting rods 2 are symmetrically arranged on the upper end face of the lower die holder 1, an upper die holder 13 is fixedly connected to the upper end faces of the two telescopic limiting rods 2 together, a guide groove 5 is formed in the center of the lower die holder 1, a female die 11 is fixedly mounted on the bottom end face of the guide groove 5, a female die groove 6 is formed in the center of the female die 11, a male rod 7 is vertically and fixedly connected to the center of the bottom end of the female die groove 6, a reset bearing plate 9 is slidably connected to the female die groove 6, a sliding hole matched with the male rod 7 is formed in the center of the reset bearing plate 9, a first air outlet hole 8 is vertically formed in the male rod 7, the lower end of the first air outlet hole 8 penetrates through the side wall of the male rod 7 to be communicated with the interior of the female die groove 6, a plurality of second air outlet holes 12 are formed in a three-ring column arrangement of the inner side wall of the female die groove 6, air in the female die groove 6, a certain impact force is caused to the bottom side wall of the periphery of the blank, so that the processed waste material on the periphery of the blank is prevented from being adhered to the upper end surface of the female die 11, and the waste material is convenient to clean; the upper end of each second air outlet hole 12 penetrates through the upper end face of the female die 11 and is communicated with the outside, the convex rod 7 is slidably connected in the sliding hole, the bottom end face of the reset bearing plate 9 is equidistantly and fixedly connected with return springs 10 in an annular mode, after machining is completed, the upper die base 13 drives the upper pressing die 3 and the convex die 4 to leave the guide groove 5, at the moment, the elastic force generated by the return springs 10 in a compression state can push the reset bearing plate 9 to move upwards, further, the gears of the upper end face of the reset bearing plate 9 are pushed to move upwards, the gears can be taken out conveniently, and the lower end of each return spring 10 is fixedly connected to the bottom end face of the female die groove.

In the utility model, firstly, the blank is placed on the female die 11, then the upper die base 13 pushes the male die 4 at the lower end of the upper pressing die 3 to move downwards to extrude the blank on the female die 11 in the guide groove 5, so that the central part of the blank sinks and extrudes the reset bearing plate 9 to enter the female die groove 6, and further compress the reset spring 10, in the process, the peripheral material of the gear can be adhered on the upper end surface of the female die 11, and the air in the female die groove 6 can be extruded in the process of pushing down the reset bearing plate 9, the air in the female die groove 6 can be upwards ejected through the second air outlet 12, certain impact force is caused on the peripheral bottom side wall of the blank, the peripheral waste material of the processed blank is prevented from being adhered on the upper end surface of the female die 11, and further the waste material is convenient to clean, and the compressed air can generate impact force on the waste material at the upper end of the blank of the male, prevent that blank waste material from adhering at the up end of nose bar 7, the clearance of the waste material of being convenient for, after processing is accomplished, cope match-plate pattern 13 drives upper die 3 and terrace die 4 and leaves guide way 5, and at this moment, the elasticity that reset spring 10 that is in compression state produced can promote reset loading board 9 and upwards remove, and then promotes the gear rebound of the up end of reset loading board 9, the taking out of the gear of being convenient for.

Claims

1. The cold extrusion device for the gear of the engine starting motor comprises a lower die holder (1) and is characterized in that two telescopic limiting rods (2) are symmetrically arranged on the upper end face of the lower die holder (1), an upper die holder (13) is fixedly connected to the upper end faces of the two telescopic limiting rods (2) together, a guide groove (5) is formed in the center of the lower die holder (1), a female die (11) is fixedly mounted on the bottom end face of the guide groove (5), a female die groove (6) is formed in the center of the female die (11), a convex rod (7) is vertically and fixedly connected to the center of the bottom end of the female die groove (6), a reset bearing plate (9) is connected in the female die groove (6) in a sliding mode, a sliding hole matched with the convex rod (7) is formed in the center of the reset bearing plate (9), the convex rod (7) is connected in the sliding hole in a sliding mode, and reset springs (10) are fixedly connected to the bottom end face of the reset, the lower end of each reset spring (10) is fixedly connected to the bottom end face of the female die groove (6), a first air outlet hole (8) is vertically formed in the convex rod (7), the lower end of the first air outlet hole (8) penetrates through the side wall of the convex rod (7) to be communicated with the interior of the female die groove (6), a plurality of second air outlet holes (12) are formed in three annular rows of the inner side wall of the female die groove (6), the upper end of each second air outlet hole (12) penetrates through the upper end face of the female die (11) to be communicated with the outside, two telescopic limiting rods (2) are symmetrically and fixedly installed on the upper end face of the lower die seat (1), each telescopic limiting rod (2) is fixedly installed with an upper die seat (13) jointly, an upper die (3) is fixedly installed at the center of the lower end of the upper die seat (13), the upper die (3) is located right above the guide groove (5) and is matched with the guide groove (5), the center of the lower end face of the upper pressing die (3) is fixedly provided with a male die (4), and the male die (4) is matched with the female die groove (6).