CN202343751U

CN202343751U - Stretch-forming punch

Info

Publication number: CN202343751U
Application number: CN2011204736285U
Authority: CN
Inventors: 黄哲潘
Original assignee: Xiamen Longshanyuan Traffic Equipment Co Ltd
Current assignee: Xiamen Longshanyuan Traffic Equipment Co Ltd
Priority date: 2011-11-24
Filing date: 2011-11-24
Publication date: 2012-07-25
Anticipated expiration: 2021-11-24

Abstract

The utility model discloses a stretch-forming punch, composed of a central core and a plurality of punch sleeves, wherein the plurality of punch sleeves are sleeved on the central core in sequence; and the outer diameters of the central core and the plurality of punch sleeves are matched with the diameters of the stepped inner cavities of a die, the diameters of the stepped inner cavities of the die are shrunk step by step, and the central core and the plurality of punch sleeves can stretch into each of the stepped inner cavities respectively. Because the punch disclosed by the utility model is produced by sleeving a plurality of punch sleeves on a central core in sequence, and the outer diameters of the central core and the plurality of punch sleeves are matched with the diameters of the stepped inner cavities of the die, the diameters of the stepped inner cavities of the die are reduced step by step, a stretching part generates an auxiliary upward thrust from the lower place when about to reach the stretching limit of a material; the flowing process of the material is smoother by virtue of heat energy generated by the friction of an upper mould, a lower mould and the material when an upper force and a lower force act at the same time; and deep-drawing processing is finished at one time, and then the production of a carbon tank body is finished.

Description

The drawing and forming punch

Technical field

The utility model relates to a kind of cold punching die, particularly relates to a kind of drawing and forming punch.

Background technology

Canister is to be under the jurisdiction of the gasoline evaporation control system; This system is that fuel-steam escapes into atmosphere behind the engine stoping operation; Can be referred to as " gall-bladder " of vapour, locomotive; Its effect is with steam introducing burning and prevents to evaporate in the atmosphere, not only reduced discharging (waste gas), and reduced oil consumption.And tank body is one of critical component of canister, and it manufactures the technology of processing, performance and the life-span that quality directly has influence on canister.The life-span of normal canister should still as because of processing technology falls behind, cause tank intensity not enough more than 50,000 kilometers; In the course of the work behind high temperature, hyperbar concussion fracture immersion oil; Can scrap at once, directly influence the performance and the life-span of engine, the most important thing is direct atmosphere pollution.

Because it is a lot of influence the factor that tank body processes, and these weave ins often, wherein the performance of the structure of the flow process of processing technology, mould, production equipment etc. is a principal element.Certainly, in the multimode production operation, it then is maximum being interrupted stretching operation (flow harden) influence, we can say that processing technology is depended in the processing technology intensity quality assurance of tank body to a great extent.Processing technology in existing unidirectional power equipment coideal is one one-off drawing, integer, the completion of side cut one mould; Yet this situation does not in fact exist; Particularly integrally stretching is once accomplished; The limit of stretch restriction of height 249mm can't be accomplished in theory because product stretches, and is difficult to the state of accomplishing that the one-off drawing operation is accomplished thus.

The utility model content

But the purpose of the utility model is to provide a kind of one-off drawing operation to accomplish the drawing and forming punch of deep drawn product.

For realizing above-mentioned purpose, the technical solution of the utility model is:

The utility model is a kind of drawing and forming punch, and it is made up of middle benevolence, a plurality of die sleeve.During a plurality of die sleeves are socketed in successively on the benevolence, the diameter that the external diameter of middle benevolence, a plurality of die sleeves and die dwindle stepped inner chamber step by step cooperates also can stretch into this each stepped inner chamber respectively.

Described counterdie is made up of middle benevolence, first die sleeve, second die sleeve, and on the benevolence, second die sleeve was socketed on first die sleeve during first die sleeve was socketed in.

After adopting such scheme, adopt many group moulds, accomplish the pull and stretch of differing heights size respectively to commonly using product processing; Material can cause the hardness of material to improve through repeatedly being interrupted stretching, influences the defective of the ductility of material extending; The structural design that the utility model adopts repeatedly and stretches, the moulding engineering combines in a mould promptly, is processed on the benevolence during the punch of the utility model is socketed in by a plurality of die sleeves successively; The external diameter of middle benevolence, a plurality of die sleeves cooperates with the diameter that die dwindles stepped inner chamber step by step, and like this, tensioning member is when being about to arrive the material extending and the limit; Produce complementary upwards thrust by the below, during the last start simultaneously of exerting oneself, the heat energy of mould and material friction generation can let the material process of flowing more smooth and easy up and down; Once accomplish and take out processing deeply, and then accomplish the production of canister tank body.

Below in conjunction with accompanying drawing and specific embodiment the utility model is further described.

Description of drawings

Fig. 1 is the utility model structure chart;

Fig. 2 is the utility model and the sketch map that cooperates of die.

The specific embodiment

As shown in Figure 1, the utility model is a kind of drawing and forming punch, and it is made up of middle benevolence 21, first die sleeve 22, second die sleeve 23.On the benevolence 21, second die sleeve 23 was socketed on first die sleeve 22 during first die sleeve 22 was socketed in.

As shown in Figure 2; The diameter that dwindles stepped inner chamber on the external diameter of benevolence 21 in described, first die sleeve 22, second die sleeve 23 and the die 1 step by step cooperates; And can stretch into this corresponding stepped inner chamber respectively; As, middle benevolence 21 cooperates with the 3rd patrix 11 inner chambers of die 1 minimum diameter and can stretch into the 3rd patrix 11 inner chambers.

The emphasis of the utility model just is: process on the benevolence during punch is socketed in by a plurality of die sleeves successively.

Claims

1. drawing and forming punch, it is characterized in that: it is made up of middle benevolence, a plurality of die sleeve; During a plurality of die sleeves are socketed in successively on the benevolence, the diameter that the external diameter of middle benevolence, a plurality of die sleeves and die dwindle stepped inner chamber step by step cooperates also can stretch into this each stepped inner chamber respectively.

2. drawing and forming punch according to claim 1 is characterized in that: described counterdie is made up of middle benevolence, first die sleeve, second die sleeve, and on the benevolence, second die sleeve was socketed on first die sleeve during first die sleeve was socketed in.