CN102814386A

CN102814386A - Inlay type combined die structure

Info

Publication number: CN102814386A
Application number: CN2012103260374A
Authority: CN
Inventors: 彭华勋
Original assignee: SUZHOU INDUSTRIAL PARK XINKAI PRECISION FASTENER Co Ltd
Current assignee: Suzhou Xinkai Fastening System Co ltd
Priority date: 2012-09-06
Filing date: 2012-09-06
Publication date: 2012-12-12
Anticipated expiration: 2032-09-06
Also published as: CN102814386B

Abstract

The invention relates to an inlay type combined die structure comprising a die sleeve, wherein a back pad is arranged in the die sleeve; a die body is arrange on the back pad in the die sleeve; a forming groove is arranged on the die body; an inlaid piece slot is arranged in the forming groove; an inlaid piece is arranged in the inlaid piece slot; the upper forming surface of the forming groove is shaped like an arc; the inlaid piece is of a + shape or a linear shape or a +- shape; the inlaid piece slot is a through hole on the die body; the die body is made from a material with good toughness; and the inlaid piece is made from an abrasion-proof material. By adopting the structure, the inlay type is adopted to replace an integral type, so that stress concentration is avoided and the phenomenon that root is easy to break off does not happen; the mold is processed by adopting wire cutting, so that the processing is easy, the polishing can be carried out, the roughness requirement of the mold can be guaranteed, the service life of the mold is prolonged and the factory cost of products is reduced.

Description

A kind of combined dies structure of inlaying

Technical field

The present invention relates to a kind of mould structure, especially relate to a kind of combined dies structure of inlaying.

Background technology

Current when producing the cross recess product; The whole cross recess punch die of warm extrusion compacting punch die and spark machined in generally using; Particularly during cold-heading Material Processing SUS316L stainless steel cross oval head square neck bolt; This type Life of Punch Die is low, and the material that it is how good that mould don't work can only be processed about in the of 1500 die life; Because stress concentrates on the mould root, so cross piece frangible; Mould selects toughness of material good, not wear-resisting; Select the high material of hardness, easy quick-fried mould; Mold integral is not easy processing, is not easy polishing and roughness and does not also guarantee; Electric spark is in processing mold, and the damage easily of electricity level produces mould R angle, and the product of producing has the R angle, and is undesirable, if at this moment take pincers worker to repair a die, is easy to cause mould to scrap.

Summary of the invention

Technical problem to be solved by this invention provides a kind of combined dies structure of inlaying, and mould is processed easily, can not produce stress and concentrate, and can increase the life-span of mould.

The technical solution adopted for the present invention to solve the technical problems is: a kind of combined dies structure of inlaying; Comprise the punch die cover; Be provided with the back pad in punch die cover inside, the inner back pad of described punch die cover is provided with die body, and die body is provided with forming tank; In forming tank, be provided with the inserts slotted eye, in the inserts slotted eye, be provided with inserts.

Further in order to process the nose shape of screw, the last forming surface of described forming tank is curved.

Further process flat recess or cross recess or ten flat recesses on the screw for ease, described inserts is cross or in-line or ten in-lines.

Further in order in the inserts wearing and tearing, to be convenient for changing and to keep in repair, described inserts slotted eye is through hole on die body.

Further in order to make mould wear-resisting and can quick-fried mould, described die body adopts the material of good toughness, and inserts adopts wear-resisting material.

The invention has the beneficial effects as follows: adopted after the said structure, do not adopted monoblock type and adopt the inserted stress of having avoided to concentrate, root frangible phenomenon can not take place, die body is selected the material of good toughness, does not allow explosive mould; Inserts is selected the high material of hardness, and is wear-resisting; Adopt line cutting processing mould, processing easily can be polished the roughness requirement that can guarantee mould before the combination, has increased the service life of mould, has reduced the cost that dispatches from the factory of product.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is the structural representation before the formed product of the present invention;

Structural representation when Fig. 3 is a formed product of the present invention;

Fig. 4 is the structural representation after the formed product of the present invention;

Fig. 5 is the structural representation of die body of the present invention;

Fig. 6 is the structural representation of inserts of the present invention.

Among the figure: 1, punch die cover; 2, back pad; 3, die body; 4, inserts; 5, product; 6, main die sleeve; 7, thimble; 3-1, inserts slotted eye; 3-2, forming tank.

The specific embodiment

Like Fig. 1, Fig. 5 and a kind of combined dies structure of inlaying shown in Figure 6; Comprise punch die cover 1; Overlap 1 inside at punch die and be provided with back pad 2, described punch die cover 1 inner back pad 2 is provided with die body 3, and die body 3 is provided with forming tank 3-2; In forming tank 3-2, be provided with inserts slotted eye 3-1, in inserts slotted eye 3-1, be provided with inserts 4; The last forming surface of described forming tank 3-2 is curved; Described inserts 4 is cross or in-line or ten in-lines; Described inserts slotted eye 3-1 is through hole on die body 3; Described die body 3 adopts the material of good toughness, and inserts 4 adopts wear-resisting material.

Carry out the matched moulds motion like Fig. 2, Fig. 3 and punch die structure shown in Figure 4 and main mode structure, promote product 5 in centre hole, moulding in the forming tank 3-2 of the head of product 5 on die body 3; Be pressed into oval head, simultaneously, owing in the die body 3 cross inserts 4 is installed; At the head moulding simultaneously cross bath of product 5, after accomplishing punching press, punch die structure is done the die sinking action; Simultaneously, thimble 7 ejects the product after the moulding 5 in main mode structure, complete operation.

This mould uses be careful silk processing die body 3 and cross inserts 4, and its surface roughness is pressed into polishing can reach roughness 0.4, and is higher than monoblock type punch die structure roughness; During installation, utilize the magnitude of interference of 0.005-0.015mm to be pressed into cross inserts 4 and make it stable, the life-span can reach ten thousand/mould of 2-3; Be about 15 times of former whole mode structures, do not concentrate that cross inserts 4 can not fracture because root can not produce stress; After wearing and tearing, eject cross inserts 4, can continue to use; If 4 wearing and tearing of cross inserts are more serious, only need to change cross inserts 4 and get final product.

It is emphasized that: above only is preferred embodiment of the present invention; Be not that the present invention is done any pro forma restriction; Every foundation technical spirit of the present invention all still belongs in the scope of technical scheme of the present invention any simple modification, equivalent variations and modification that above embodiment did.

Claims

1. inlay the combined dies structure for one kind; Comprise punch die cover (1); Be provided with back pad (2) in punch die cover (1) inside, it is characterized in that: the inner back pad (2) of described punch die cover (1) is provided with die body (3), and die body (3) is provided with forming tank (3-2); In forming tank (3-2), be provided with inserts slotted eye (3-1), in inserts slotted eye (3-1), be provided with inserts (4).

2. the combined dies structure of inlaying according to claim 1 is characterized in that: the last forming surface of described forming tank (3-2) is curved.

3. the combined dies structure of inlaying according to claim 1 and 2 is characterized in that: described inserts (4) is cross or in-line or ten in-lines.

4. the combined dies structure of inlaying according to claim 1 and 2 is characterized in that: described inserts slotted eye (3-1) is gone up in die body (3) and is through hole.

5. the combined dies structure of inlaying according to claim 1 and 2 is characterized in that: described die body (3) adopts the material of good toughness, and inserts (4) adopts wear-resisting material.