CN201064816Y

CN201064816Y - Special-purpose hinge pin bolt forming die

Info

Publication number: CN201064816Y
Application number: CNU200720071388XU
Authority: CN
Inventors: 徐国华
Original assignee: SHANGHAI SQB AUTOMOTIVE FASTENERS Ltd
Current assignee: SHANGHAI SQB AUTOMOTIVE FASTENERS Ltd
Priority date: 2007-06-21
Filing date: 2007-06-21
Publication date: 2008-05-28
Anticipated expiration: 2017-06-21

Abstract

The utility model discloses a special hinge pin bolt mould, comprising an upper mould sleeve, an upper mould core, an upper mould thimble, a lower mould sleeve, a lower mould core and a lower mould thimble. The mould cavity of the upper mould core is matched with the size of the upper screw rod of the hinge pin and the umbrella-shaped riveting tooth. The lower mould core is matched with the sizes of two segments of the screw rods which are on the lower part of the hinge pin. The upper and the lower mould cores are made of hard alloy materials. Because the mould cavities of the upper and the lower mould cores of the special hinge pin bolt mould are matched with the shape and the size of the special hinge pin bolt, the special hinge pin bolt can be molded through the full cold-heading mould without using the mechanical process to machine the special hinge pin bolt so that the work efficiency is greatly improved; the waste of materials is reduced, guaranteeing the quality of products.

Description

Special hinge pin bolt mould

Technical field

The utility model relates to the cold-heading mould, relates in particular to the cold-heading mould of a kind of special hinge pin bolt moulding.

Background technology

Along with the develop rapidly of automobile manufacture industry, more and more higher to the requirement of all kinds of connectors in the automobile manufacturing field, and nonstandard product is also more and more.As car hinge pin bolt in the popular vehicle, it is divided into four sections, the centre has one section to be 50 ° of umbrella shape riveted teeth that have 36 uniform double wedges of tapering, and connects two sections screw rods of φ 9 to φ 6, also is provided with the installation guide end of a R6 in φ 9 screw rod lower ends, the umbrella shape riveted tooth other end connects the screw rod of M8*1, its complex structure, vary in diameter is many, and φ 9 arrives the undergauge of 6 two sections diameters of bolt of φ than nearly 56%, and φ 9 arrives M8*1 spiral shell base diameter undergauge than 36%, and 9 sections screw rod tolerances of φ are-0.036 millimeter.Usually open undergauge is the limit than 30%, is higher than the easy jumping-up of 30% metal and undergauge not; So its processed complex, it needs to use machine-tooled method production fully usually, and difference turning is diameter and milling conical tooth everywhere.This kind machine-tooled method is higher because of 9 sections screw rod required precisions of φ, and it is low that it produces efficient in enormous quantities, the processing cost height, and waste of raw materials is serious.

Summary of the invention

Technical problem to be solved in the utility model provides a kind of special hinge pin bolt mould of complete cold upset forming.

For solving the problems of the technologies described above, the utility model special hinge pin bolt mould, comprise Upper Die-sleeve, be located at the upper mold core in the described Upper Die-sleeve, be located at the patrix thimble in described Upper Die-sleeve and the upper mold core, also comprise lower die-sleeve and be located at the lower mold core in the described lower die-sleeve and be located at described lower die-sleeve and lower mold core in the counterdie thimble, the size coupling of the inner die cavity of upper mold core and joint pin bolt upper screw and umbrella shape riveted tooth, the two sections screw size couplings in inner die cavity of lower mold core and joint pin bolt bottom; Become movingly between patrix thimble and Upper Die-sleeve and the upper mold core, become stationary fit between Upper Die-sleeve and the upper mold core, become movingly between counterdie thimble and lower die-sleeve and the lower mold core, become stationary fit between lower die-sleeve and the lower mold core; Upper mold core and lower mold core adopt Hardmetal materials.

Because the utility model special hinge pin bolt mould is the inside die cavity and the special hinge pin bolt shape size coupling of core rod up and down, make and utilize this mould required special hinge pin bolt of cold upset forming fully, and needn't use machine-tooled method to process special hinge pin bolt, therefore improved work efficiency greatly, reduce raw-material waste, guaranteed the quality of product.

Description of drawings

The utility model is described in further detail below in conjunction with drawings and embodiments:

Fig. 1 is the structural representation of special hinge pin bolt,

Fig. 2 is the structural representation of the utility model special hinge pin bolt mould,

Fig. 3 is the structural representation after the utility model special hinge pin bolt mould formed product.

The specific embodiment

Fig. 1 is the structural representation of special hinge pin bolt, as shown in the figure, this special hinge pin bolt is made up of four parts, 6 sections screw rods of φ 31 connect 9 sections screw rods 32 of φ, there is the installation guide end of a R6 both junctions on 9 sections screw rods 32 of φ, what connect 9 sections screw rods 32 of φ is one section and is 50 ° of umbrella shape riveted teeth 33 that have 36 uniform double wedges of tapering that what connect umbrella shape riveted tooth 33 is the screw rod 34 of M8*1.

Fig. 2 is the structural representation of the utility model special hinge pin bolt mould, this special hinge pin bolt mould comprises Upper Die-sleeve 11, be located at the upper mold core 12 in the described Upper Die-sleeve 11, be located at the patrix thimble 13 in described Upper Die-sleeve 11 and the upper mold core 12, also comprise lower die-sleeve 21 and be located at the lower mold core 22 in the described lower die-sleeve 21 and be located at described lower die-sleeve 21 and lower mold core 22 in counterdie thimble 23, the size coupling of upper mold core 12 inner die cavities and special hinge pin bolt 30 upper screw and umbrella shape riveted tooth, the two sections screw size couplings in lower mold core 22 inner die cavities and special hinge pin bolt 30 bottoms; Become movingly between patrix thimble 13 and Upper Die-sleeve 11 and the upper mold core 12, become stationary fit between Upper Die-sleeve 11 and the upper mold core 12, become movingly between counterdie thimble 23 and lower die-sleeve 21 and the lower mold core 22, become stationary fit between lower die-sleeve 21 and the lower mold core 22; Upper mold core 12 and lower mold core 22 adopt Hardmetal materials, and special hinge pin bolt 30 is between upper mold core 12 inner die cavities and lower mold core 22 inner die cavities.

Fig. 3 is the structural representation after the utility model special hinge pin bolt mould formed product, special hinge pin bolt 30 is behind cold upset forming, Upper Die-sleeve 11 retreats, and patrix thimble 13 and counterdie thimble 23 eject respectively, and the special hinge pin bolt 30 of moulding is ejected mould.

This mould adopts four station structures to move automatically on the material cold headers at band and produces this product with the cold-heading method fully, select suitable wire rod for use, first station adopts the forward extrusion method to realize the aniseed small deformation, guarantee to realize the undergauge of φ 9 to φ 6 screw rods, second station uses carbide alloy tape guide patrix to realize that φ 9 screw rods are to M8*1 spiral shell base diameter undergauge, the 3rd station design umbrella shape riveted tooth preform and R6 install the guide end preform, and the 4th station carries out the finishing shaping with special-purpose umbrella shape riveted tooth finishing die and carbide alloy to product and guarantees all dimensional requirements of product.

Claims

1. special hinge pin bolt mould, comprise Upper Die-sleeve, be located at the upper mold core in the described Upper Die-sleeve, be located at the patrix thimble in described Upper Die-sleeve and the upper mold core, also comprise lower die-sleeve and be located at the lower mold core in the described lower die-sleeve and be located at described lower die-sleeve and lower mold core in the counterdie thimble, it is characterized in that: the size coupling of the inner die cavity of described upper mold core and joint pin upper screw and umbrella shape riveted tooth, the two sections screw size couplings in inner die cavity of described lower mold core and joint pin bottom.

2. a kind of special hinge pin bolt mould according to claim 1, it is characterized in that: become movingly between described patrix thimble and described Upper Die-sleeve and the upper mold core, become stationary fit between described Upper Die-sleeve and the upper mold core, become movingly between described counterdie thimble and described lower die-sleeve and the lower mold core, become stationary fit between described lower die-sleeve and the lower mold core.

3. a kind of special hinge pin bolt mould according to claim 1, it is characterized in that: described upper mold core and lower mold core are carbide alloy.