CN201118387Y

CN201118387Y - Automatic overlapping installation mould feeding round tightening ring structure for electromotor iron core

Info

Publication number: CN201118387Y
Application number: CNU2007201922863U
Authority: CN
Inventors: 宋红杰; 曾波
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 round straining ring for a progressive die for the automatic lamination of a motor core of the utility model comprises a lower die fixing plate and a lower die seat; the lower die is pressed on the lower die fixing plate, and a groove to hold the straining ring is arranged on the lower die seat; the straining ring is round and is made of wear resistant material; the straining ring can be actively installed in the groove, with a free gap left between the straining ring and the wall of the groove; the top of the straining ring is lower than that of the groove, and the size of the straining ring is smaller than that of the lower die; the lower die is not pressed on the straining ring and a lead-in round corner is arranged at the upper edge of the inner hole of the straining ring.

Description

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

(1) technical field

This tightening structure relates to all electric machine iron core automatic overlapping and assembling incremental pressing dies and other type iron core automatic overlapping and assembling progressive stamping moulds.

(2) background technology

The automatic overlapping and assembling technology is imported China into about the eighties of last century the eighties greatly.Because iron core is the energy automatic overlapping and assembling in mould, the product that comes out from mould can directly wind the line, and has saved this procedure of artificial welding, has improved generation efficient greatly.Therefore, motor iron core die mostly adopts the progressive die of automatic overlapping and assembling, and this progressive die comprises: tightening ring, an independent annulus spare in tightening structure; Tightening is set in the strip or the circular ring-shaped member that tighten up the cover inwall in tightening structure; Tighten up cover: in tightening structure, play and support tightening effect part.

Tightening ring in the tightening structure (tightening up cover) is to finish the indispensable part of automatic overlapping and assembling, is that tightening structure produces the frictional resistance effect to iron core, causes iron core energy automatic overlapping and assembling.

Because the distinctive effect of tightening ring, between it and the iron core certain magnitude of interference is arranged, interior hole dimension is littler than hole dimension in the die, and shape is identical, and the position of two inner hole centrelines is essential consistent.If two endoporus centers are inconsistent, when iron core arrives tightening down,,, can cause iron core to tilt, even can block Yi Bian it is too small not rub or rub Yi Bian friction is arranged; Therefore, the dimensional accuracy of tightening structure and position accuracy demand are very high, particularly the position degree; If precision does not reach, can influence perpendicularity, the flatness of iron core, and iron core pulls easily, is out of shape, and do not reach requirement.

At present the tightening structure that uses as shown in Figure 1, its design feature is as follows:

1. die 6` press fit on the die block 5`;

2. tightening 4` press fit over and tightens up on the cover 3`;

3. be fixed on the die block 5` tightening up cover 3` with steady pin 7`;

4. die block 5` installs to die shoe 1` upward (on the die shoe `1 groove being arranged) together with tightening up cover 3`;

5. with screw die block 5` is fixed on the die shoe 1`;

6. be locked in die shoe 1` from the die shoe 1` back side with screw tightening up cover 3`.

Because the precision of process equipment and the accumulation of tolerance, positional precision are difficult to guarantee:

1. die block and die can not be processed simultaneously, and the concentricity of die endoporus and profile can influence the position degree of the fixed pin holes on the die block;

2. also location error when die block processing die hole and fixed pin holes;

3. tightening (inside and outside circle or interior unusual circle) adds and has concentricity error man-hour;

4. tighten up cover processing and tighten up the fixed pin holes location error that puts;

5. steady pin itself also has trueness error;

So the position of tightening (inside and outside circle or interior unusual circle) just by the concentricity of tightening inside and outside circle, tighten up the position degree of cover endoporus and the precision of steady pin hole location, steady pin itself, die hole on the die block and steady pin and endoporus that die adds man-hour and the concentricity of profile and determine.Because complex structure, difficulty of processing height, the matching relationship of tightening structure are many, it is big to accumulate tolerance, make two endoporus center degree poor, so the iron core that punching press is come out often is out of shape, pulls, injustice, inclination etc.

(3) summary of the invention

Of the present utility modelly to solve that existing electric machine iron core automatic overlapping and assembling progressive die tightening structure complexity, difficulty of processing height, matching relationship are many, the position is to the shortcoming of moderate difference, provide a kind of simple in structure, processing cost is low, to the self-regulating a kind of mould parts structure of moderate energy.

The circular tightening ring structure of electric machine iron core automatic overlapping and assembling progressive die described in the utility model comprises die block and die shoe, die press fit on the die block, be useful on the groove that holds tightening ring on the die shoe, it is characterized in that: tightening ring is circular and adopts high-abrasive material to be processed into, described tightening ring is installed in the described groove movably, between the wall of tightening ring and described groove the free gap is arranged; The top of tightening ring is lower than the top of described groove, and tightening ring overall dimension is littler than die overall dimension, and die is not pressed on the tightening ring; The upper limb of the endoporus of tightening ring has the importing fillet.

During assembling, tightening ring is placed in the groove of die shoe, the die block that is pre-assembled (die press fit on the die block) is covered be fixed on the die shoe again; When checking the active state of tightening ring, available hand puts in the tightening ring from the die hole, about the tightening ring energy, about, 360 degree rotate and get final product.

Because the importing fillet is arranged. iron core is equivalent to an iron prop, when iron core enters tightening ring from die, can pass to tightening ring to the position of die, tightening ring can be according to the size of it and the iron core magnitude of interference, automatically adjusting position. need not consider the concentricity of die and tightening ring.Tightening ring only needs endoporus fine finishining, and profile roughing guarantees that the out of roundness and the dimensional accuracy of endoporus gets final product,

The utility model has the advantages that: 1) because the position is good to moderate, and iron core can not tilt, the iron core perpendicularity is good; 2) magnitude of interference unanimity, iron core can not be out of shape, and the iron core flatness is good; 3) each face friction is identical, and iron core can not pulled by single face, and the friction vestige is even, and outward appearance is good; 4) mould structure obtains simplifying, and difficulty of processing is little, and cost reduces.

(4) description of drawings

Fig. 1 is the structural representation of the present electric machine iron core automatic overlapping and assembling progressive die tightening structure that uses

Fig. 2 is the endoporus of the electric machine iron core automatic overlapping and assembling progressive die tightening structure that uses the at present situation schematic diagram that iron core tilts when inaccurate to moderate

Fig. 3 is a structural representation of the present utility model

(5) embodiment

The circular tightening ring structure of electric machine iron core automatic overlapping and assembling progressive die described in the utility model, comprise die block 3 and die shoe 1, die 4 press fit on the die block 3, be useful on the groove 6 that holds tightening ring on the die shoe 1, tightening ring 2 is circular and adopts high-abrasive material to be processed into, described tightening ring 2 is installed in the described groove 6 movably, between the wall of tightening ring 2 and described groove 6 free gap 5 is arranged; The top of tightening ring 2 is lower than the top of described groove 6, and tightening ring 2 overall dimensions are littler than die 4 overall dimensions, and die 4 is not pressed on the tightening ring 2; The upper limb of the endoporus of tightening ring 2 has the fillet 7 of importing.

Claims

1, the circular tightening ring structure of electric machine iron core automatic overlapping and assembling progressive die, comprise die block and die shoe, die press fit on the die block, be useful on the groove that holds tightening ring on the die shoe, it is characterized in that: tightening ring is circular and adopts high-abrasive material to be processed into, described tightening ring is installed in the described groove movably, between the wall of tightening ring and described groove the free gap is arranged; The top of tightening ring is lower than the top of described groove, and tightening ring overall dimension is littler than die overall dimension, and die is not pressed on the tightening ring; The upper limb of the endoporus of tightening ring has the importing fillet.