CN201040301Y

CN201040301Y - Punch head structure

Info

Publication number: CN201040301Y
Application number: CNU2007200478729U
Authority: CN
Inventors: 文孟国
Original assignee: Mitac Precision Technology Shunde Ltd
Current assignee: Mitac Precision Technology Shunde Ltd
Priority date: 2007-01-26
Filing date: 2007-01-26
Publication date: 2008-03-26
Anticipated expiration: 2017-01-26

Abstract

The utility model discloses a new punch structure. The punch creep is a straight punch creep. An upper end of the punch creep is provided with a locking groove and a plurality of locking rings. The inner side of the locking ring is embedded into a locking groove of a punch and the outer side is hung on a splint to fix the punch on the splint. The thickness of the locking ring is larger than the gap between the external width of the punch and the external width of the locking groove. The punch structure can not only fix the punch firmly but also reduce the processing cost because of simple processing without affecting the strength of the punch.

Description

A kind of punch structure

Technical field

The utility model relates to a kind of stamping tool, relates in particular to a kind of punch structure.

Background technology

At present, in mould was made, general common drift fixed form had following several mode:

First kind is to grind hanging platform on the drift body, is used for fixing drift, and in this fixed form, it is that hanging platform could be ground in the plane that drift must have a face, nor is applicable to the fixing of special-shaped drift;

Second kind is to do pinned hole on the drift body, fixes with wearing pin, and this fixed form generally is applicable to the drift that profile is bigger, and for the too little drift of profile, does pinned hole in the above, does not have intensity, and fixed effect is not good;

The third is to lock pressing plate at drift upper end fluting to fix, the drift of this blossom type, and fluting lock pressing plate fixes can only tangle an angle, insecure, is pulled down easily, causes the frequent trouble that repairs a die;

The 4th kind is that processing step fixes above the round punch, and this drift will be made blossom type, and the edge of a knife can only use the method processing of discharge, its discharge processing cost height, and processing difficulties if precision does not reach requirement, can make product occur that burr is big, problem such as frequent repairs a die.

The utility model content

Thereby technical problem to be solved in the utility model provide a kind of can not only be very firm fixedly drift, cut down finished cost by simplifying procedure, and do not influence the special-shaped drift fixed structure of the intensity of drift.

For solving the problems of the technologies described above, the technical solution of the utility model is: directly cut the needed special-shaped drift of processing with line, process an annular slot in the upper end of drift; The snap ring that reprocessing matches with draw-in groove.Described snap ring is packed into and is formed an integral body behind the corresponding draw-in groove of drift, reinstalls in the clamping plate.Wherein, the inboard of described snap ring snaps in the draw-in groove of drift and the outside hangs on the clamping plate, and the thickness of its snap ring is poor greater than drift external width and draw-in groove external width.

More preferably, the cross section of described draw-in groove is circular, and described snap ring is a watt shape.

More preferably, the cross section of described draw-in groove is circular, and described snap ring inside is circular, and the outside is square.

More preferably, the cross section of described draw-in groove is square, and described snap ring inside is square, and the outside is circular.

More preferably, the cross section of described draw-in groove is square, and described snap ring inside is square, and the outside is square.

More preferably, the quantity of described snap ring is 2 to 4.

This fixed form not only can be very firm fixedly drift, and, do not influence the intensity of drift again because processing simply makes processing cost reduce.And this fixed structure is particularly useful on some shell fragment moulds and the terminal mould.

Description of drawings

Fig. 1 is the three-dimensional structure diagram of the utility model drift.

Fig. 2 is the three-dimensional structure diagram of the snap ring of the utility model most preferred embodiment drift.

Fig. 3 is installed in the clamping plate inner section for the utility model.

The specific embodiment

Below in conjunction with accompanying drawing, further describe structure of the present utility model.

See also shown in Fig. 1,2, be the three-dimensional structure diagram of drift of the present utility model and snap ring.In this embodiment, described drift 10 is a special-shaped drift, and described drift comprises a draw-in groove 101 and the snap ring 102 that matches with described draw-in groove 101.The described snap ring corresponding draw-in groove of described drift 101 backs of packing into form integral body, reinstall in the clamping plate 20.Wherein, the inboard of described snap ring snaps in the draw-in groove 101 of described drift 10 and the outside hangs on the described clamping plate 20, and the thickness of its snap ring 102 is poor greater than drift 10 external width and draw-in groove 101 external width.

Please continue that to consult 3 be that the utility model is installed in the clamping plate inner section.The train wheel bridge 202 processing one circular deep gouge 210 of described clamping plate 20, the snap ring 102 monolateral gaps of itself and described drift 10 are used to prevent the drop-down of drift in 0.1 millimeter; Again deep gouge 210 bottoms of described train wheel bridge 202, baffle plate 203, on take off plate 204 corresponding described drifts 10 positions and process a containing cavity with ccontaining drift 10, above described train wheel bridge, place a upper padding plate, be used to prevent that described drift from moving upward.

More preferably, the quantity of described snap ring is 2 to 4.

In this, the utility model provides a kind of fixed structure of drift, has realized the less special-shaped drift of profile fixing in clamping plate, reaches the intensity that neither influences drift, again can fine fixing purpose.

The above, all can only think to limit the utility model to explanation of the present utility model, claims have been pointed out scope of the present utility model, and scope of the present utility model is not pointed out in above-mentioned explanation, therefore, in implication suitable and any change in the scope, all should think to be included in the scope of claims with claims of the present utility model.

Claims

1. punch structure, described punch structure comprises a jumper bar, this jumper bar is body jumper bar always; It is characterized in that also comprising:

One draw-in groove; And

Snap ring, its inboard snaps in the draw-in groove of drift, and the outside hangs on the clamping plate in order to described drift is fixed on the clamping plate, the thickness of its snap ring is poor greater than drift external width and draw-in groove external width.

2. punch structure according to claim 1 is characterized in that: the cross section of described draw-in groove is for circular, and described snap ring is a watt shape.

3. punch structure according to claim 1 is characterized in that: the cross section of described draw-in groove is for circular, and described snap ring inside is circular, and the outside is square.

4. punch structure according to claim 1 is characterized in that: the cross section of described draw-in groove is square, and described snap ring inside is square, and the outside is circular.

5. punch structure according to claim 1 is characterized in that: the cross section of described draw-in groove is square, and described snap ring inside is square, and the outside is square.

6. according to each described punch structure in the claim 1 to 5, it is characterized in that: the quantity of described snap ring is 2 to 4.