CN201118388Y

CN201118388Y - Concave mould tightening structure for automatic overlapping installation mould feeding of electromotor iron core

Info

Publication number: CN201118388Y
Application number: CNU2007201922878U
Authority: CN
Inventors: 宋红杰; 杨健
Original assignee: CIXI HONGDA MOTOR DIE MANUFACTURE CENTER
Current assignee: CIXI HONGDA MOTOR DIE MANUFACTURE CENTER
Priority date: 2007-10-31
Filing date: 2007-10-31
Publication date: 2008-09-17
Anticipated expiration: 2017-10-31

Abstract

A lower die straining structure for a progressive die for the automatic lamination of a motor core comprises a lower die fixing plate and a lower die base. A blanking die is pressed on the lower die fixing plate which is supported on the lower die base; a discharge hole is arranged on the lower die base below the inner hole of the lower die; a sidestep is arranged on the surface of the wall of the inner hole of the lower die, and the size of the inner hole below the sidestep is bigger than the size of the inner hole above the sidestep, which results in the existence of certain interference when the outer edge of a discharging core passes through the inner hole of the lower die.

Description

The die tightening structure of electric machine iron core automatic overlapping and assembling progressive die

(1) technical field

The utility model relates to a kind of diel of electric machine iron core automatic overlapping and assembling progressive die.

(2) background technology

The closed assembly of iron core in mould is the principle by snap-fastener, is before utilizing the kick of punching out in punching to embed in a slice punching, thus the riveted joint between the realization punching, to reach the purpose of iron core closed assembly.

After making iron core can finish closed assembly, can bear certain power that laminates, the upper pressure of closed assembly is from blanking punch, lower support power is then from the tightening ring below the blanking die, the extrusion friction power of utilizing the outer rim of blanking punching strain and tightening ring inwall to produce closely snaps together punching and punching to finish closed assembly and rivets tightly.

The tightening structure of traditional electric machine iron core automatic overlapping and assembling progressive die as shown in Figure 1, blanking die 2` press fit on the die block 1`, the tightening ring 4` of below is fixed on the die shoe 3`.Blanking die 2` only possesses the function of stamping and blanking and does not possess the function of tightening up.Punching and punching are closely snapped together finish closed assembly and rivet tightly, the interior shape size of the tightening ring 4` below the die 2` is littler than shape size in the blanking die 2`, makes blanking iron core outer rim form an amount of magnitude of interference by tightening ring 4` the time.Tightening ring 4` highly decides on the iron core height, generally than single minute platform iron core height height, to produce the more moderate power that laminates, reaches the purpose that the iron core closed assembly is riveted tightly.But because the height of tightening ring is subjected to the restriction of iron core height and mould structure easily, the height of the tightening ring often height than iron core is little, makes the frictional force of tightening ring reduce, and the closed assembly that the influences iron core quality of riveting tightly.

(3) summary of the invention

The closed assembly that the utility model will solve the die tightening structure iron core of the existing electric machine iron core automatic overlapping and assembling progressive die ropy shortcoming of riveting tightly provides the die tightening structure of the electric machine iron core automatic overlapping and assembling progressive die that a kind of closed assembly that can improve iron core rivets tightly quality.

The die tightening structure of electric machine iron core automatic overlapping and assembling progressive die described in the utility model, comprise die block and die shoe, blanking die press fit on the die block, die block is supported on the die shoe, have discharging opening on the die shoe of the below of die endoporus, it is characterized in that: a step is arranged on the wall of the endoporus of die, and the interior hole dimension of step below makes blanking iron core outer rim form an amount of magnitude of interference by the die endoporus time greater than the size of the endoporus of step top.

Further, described step is positioned at 1/2 place of die endoporus height.

Tightening ring is arranged on the die shoe, and the center-aligned of the endoporus of tightening ring and die, the size of tightening ring endoporus equal the size of die endoporus step below part, make blanking iron core outer rim form an amount of magnitude of interference by tightening ring the time,

It is a kind of under the identical condition of mould structure that the utility model provides, and the iron core that increases existing electric machine iron core automatic overlapping and assembling progressive die tightens up functional structure.The utility model is a shape in blanking die die cavity 1/2 is highly located to form than the little step of die edge of a knife size, make shape face formation step surface in the blanking die, when die when finishing the punching stamping-out, when punching is laminated to blanking die die cavity 1/2 and highly locates, the latter half die cavity of die begins to play the function of tightening up of tightening ring, thereby has effectively increased the actual height that iron core tightens up.Under equal conditions tightening up highly in the mould is: the height H of tightening ring, and of the present utility model tightening up highly is: die tightens up the height H of height h+ tightening ring.

When the iron core height was lower than blanking die die cavity 1/2 height, traditional mould tightening ring can be cancelled, thereby simplified mould structure, strengthened the stability of mould.

The beneficial effects of the utility model mainly show: effectively increased the actual height that iron core tightens up, the closed assembly that the has improved iron core quality of riveting tightly.

(4) description of drawings

Fig. 1 is a blanking die structural representation before improving

Fig. 2 is a structural representation of the present utility model

(5) embodiment

Embodiment one

The die tightening structure of electric machine iron core automatic overlapping and assembling progressive die described in the utility model, comprise die block 1 and die shoe 3, blanking die 2 press fit on the die block 1, die block 1 is supported on the die shoe 3, have discharging opening 5 on the die shoe 3 of the below of die 2 endoporus, one step 6 is arranged on the wall of the endoporus of die 2, and the interior hole dimension of step 6 belows makes blanking iron core outer rim form an amount of magnitude of interference by the die endoporus time greater than the size of the endoporus of step 6 tops.

Described step 6 is positioned at 1/2 place of die endoporus height.

Tightening ring 4 is arranged on the die shoe 3, the center-aligned of the endoporus of tightening ring 4 and die 2, and the size of tightening ring 4 endoporus equals the size of die 2 endoporus steps 6 below parts, makes blanking iron core outer rim form an amount of magnitude of interference by tightening ring the time.

Embodiment two

The difference of present embodiment and embodiment one is: when the iron core height was lower than the height of blanking die 2 die cavity steps 6, traditional mould tightening ring 4 can be cancelled, thereby simplified mould structure, strengthened the stability of mould.

All the other are identical with embodiment one.

Claims

1, the die tightening structure of electric machine iron core automatic overlapping and assembling progressive die, comprise die block and die shoe, blanking die press fit on the die block, die block is supported on the die shoe, have discharging opening on the die shoe of the below of die endoporus, it is characterized in that: a step is arranged on the wall of the endoporus of die, and the interior hole dimension of step below makes blanking iron core outer rim form an amount of magnitude of interference by the die endoporus time greater than the size of the endoporus of step top.

2, the die tightening structure of electric machine iron core automatic overlapping and assembling progressive die as claimed in claim 1 is characterized in that: described step is positioned at 1/2 place of die endoporus height.

3, the die tightening structure of electric machine iron core automatic overlapping and assembling progressive die as claimed in claim 1 or 2, it is characterized in that: tightening ring is arranged on the die shoe, the center-aligned of the endoporus of tightening ring and die, the size of tightening ring endoporus equals the size of die endoporus step below part, makes blanking iron core outer rim form an amount of magnitude of interference by tightening ring the time.