CN201572836U

CN201572836U - Necking module of tank body

Info

Publication number: CN201572836U
Application number: CN2009202743978U
Authority: CN
Inventors: 张仁贤
Original assignee: Cheng Shin Enterprise Co Ltd
Current assignee: Cheng Shin Enterprise Co Ltd
Priority date: 2009-11-30
Filing date: 2009-11-30
Publication date: 2010-09-08
Anticipated expiration: 2019-11-30

Abstract

The utility model relates to a necking module of a tank body, which comprises a mold and an inflating unit, wherein the mold is nested with one end part of the tank body and extrudes the end part of the tank body to deform for forming a necking section; and the inflating unit is arranged in the mold in a penetrating manner and used for producing air pressure so as to enable the tank body to be in the expanded state under the action of the air pressure. Therefore, necking module can strengthen the structural strength of the tank body by using the air pressure to provide the reaction force, improve the smoothness of the necking section of the tank body during the deformation and maintain the flatness of the outer part of the necking section of the tank body.

Description

The necking down module of jar trunk

Technical field

The utility model relates to a kind of necking down module, particularly relates to a kind of necking down module that makes jar trunk distortion and form the jar trunk of a necking segment.

Background technology

Consulting Fig. 1, is example with present common on the market metal can 1 (three tinplates), mainly is to form with two

metal ends

12,13 of a metal can trunk 11 encapsulation.During manufacturing, can urge this jar trunk 11 at least one end with a ring mould (figure does not show) usually, make the end of this jar trunk 11 form a necking segment 111, whereby, can reach the purpose of this end cap 12 of reduction or this end cap 13 materials and cost.

And the material slimming is the wherein a kind of approach that reduces cost, therefore, approximately from the mid-1970s, just introduced the theory of slimming, metal can 1 thickness at that time is about 0.38mm, the heavy 40g of can body, by 1993, the material thickness and the can body weight of making metal can 1 reduced to 0.28mm and 29g respectively, to the mid-90s in 20th century, the material thickness of metal can 1 has reached 0.22mm, and weight has cut 21% again.

At present, because of making the production technology progress of tinplate, the thickness of metal can 1 can reach 0.10～0.15mm, only, because the significantly attenuation of the thickness of this jar trunk 11 is not so this jar trunk 11 has enough intensity, can load the power of squeezing of compeling in the existing necking down processing procedure, it is incomplete to produce 11 moulding of this jar trunk, and the too many phenomenon of gauffer, not only influences the quality of metal can 1, and there is use limited, can't reaches the disappearance of the market demand.

The utility model content

The purpose of this utility model is that a kind of necking down module that is applicable to thin type jar trunk is being provided.

The necking down module of of the present utility model jar of trunk comprises a mould, and an inflation unit.An end fit of this mould and a jar trunk, and compel to squeeze the end distortion of this jar trunk and form a necking segment.This inflation unit is set in this mould and is used to produce air pressure, makes this jar trunk be subjected to gas pressure to be the expanding state.

The beneficial effects of the utility model are: the structural strength that provides reaction force to strengthen this jar trunk with air pressure, and the smoothness when promoting the distortion of this jar trunk necking segment, and keep the outer flatness of this jar trunk necking segment.

Description of drawings

Fig. 1 is a stereogram, and general metal can is described;

Fig. 2 is a cutaway view, and a preferred embodiment of the necking down module of a kind of jar of trunk of the utility model is described;

Fig. 3 is a cutaway view of a relative jar trunk of mould displacement in this preferred embodiment;

Fig. 4 is the cutaway view that this mould pushes this jar trunk in this preferred embodiment; And

Fig. 5 is the cutaway view that this this jar of mould model trunk forms a necking segment in this preferred embodiment.

The specific embodiment

Below in conjunction with drawings and Examples the utility model is elaborated:

Consult Fig. 2, Fig. 3, and Fig. 4, preferred embodiment of the necking down module of a kind of jar of trunk of the utility model is used for jar trunk 2 of model.This necking down module comprises a mould 3, an inflation unit 4, and a chassis 5.

This mould 3 has around an axis X and defines a die wall 31 of an axis hole 30, and is formed on a necking part 32 of these die wall 31 1 inner surfaces 311.The internal diameter of this necking part 32 is less than the external diameter of this jar trunk 2, and by shrinking away from an ora terminalis 321 of this axis X another ora terminalis 322 towards contiguous this axis X.

This inflation unit 4 has along this axis X and is set in a slide block 40 in this mould 3 axis holes 30, is arranged on these slide block 40 1 ends and towards an internal mold 41 of this jar trunk 2, and passes an inflation pipe fitting 42 of this slide block 40 and this internal mold 41 along this axis X.This slide block 40 is used for mounting this internal mold 41 and this inflation pipe fitting 42.This internal mold 41 has and is formed on an end and defines the outer surface 411 in a necking down gap 410 with the necking part 32 of these mould 3 inner surfaces 311.This inflation pipe fitting 42 has an air outlet 421 that is formed on an end face.

This chassis 5 is used to carry this jar trunk 2.

During moulding, this mould 3 can move downward together with this inflation unit 4, when this mould 3 contacts with an end 21 of this jar trunk 2 with this necking part 32, this jar trunk 2 can be forced to be stable on this chassis 5 in this mould 3, and form an airtight space with the axis hole 30 of this mould 3, at this moment, the air outlet 421 of this inflation pipe fitting 42 be able to be in abutting connection with this jar trunk 2 with this internal mold 41, air-flow in this inflation pipe fitting 42 is filled in this jar trunk 2 by this air outlet 421, formation acts on the air pressure in this jar trunk 2, whereby, can be in this jar trunk 2 because gas pressure is the expanding state.

Consult Fig. 3, Fig. 4, Fig. 5, when this mould 3 continues to descend, and in the process with this necking part 32 and this jar trunk 2 ends 21 fits, this slide block 40 can cooperate this jar trunk 2 to stretch through into the degree of depth of this mould 3 axis holes 30, retire along this axis X with this inflation pipe fitting 42 together with this internal mold 41, the air outlet 421 that makes this inflation pipe fitting 42 and this jar trunk 2 keep the state that communicates, and can continue to provide reaction force to strengthen the structural strength of this jar trunk 2 with air pressure, this end 21 is cooperated to stretch through into the degree of depth of this mould 3 axis holes 30, follow the appearance of this necking part 32 to be out of shape smoothly, be hampered by this slide block 40 to this end 21 and compeled necking down gap 410 41 of this mould 3 and this internal molds by folder, and then form a necking segment 22, and keep the flatness outside this jar trunk 2 necking segment 22.

According to the above as can be known, the necking down module of of the present utility model jar of trunk has following advantage and effect:

The utility model can utilize air pressure to provide reaction force to strengthen the structural strength of this jar trunk 2, and the smoothness when promoting the distortion of this jar trunk 2 necking segment 22, and keep the outer flatness of this jar trunk 2 necking segment 22, make the utility model be applicable to the jar trunk 2 of thin typeization, and then can promote the quality of this jar trunk 2, promote product competitiveness.

Claims

1. the necking down module of a jar trunk is characterized in that it comprises:

A mould with an end fit of a jar trunk, and compel to squeeze the end distortion of this jar trunk and forms a necking segment; And

An inflation unit is set in this mould and is used to produce air pressure, makes this jar trunk be subjected to gas pressure to be the expanding state.

2. the necking down module of as claimed in claim 1 jar of trunk, it is characterized in that this inflation unit has a slide block that is set in this mould, and pass an inflation pipe fitting of this slide block, this slide block is used for this inflation pipe fitting of mounting, and gos deep into this mould with this jar trunk end and retire.

3. the necking down module of as claimed in claim 2 jar of trunk, it is characterized in that, this inflation unit also has and is arranged on this slide block one end and towards an internal mold of this jar trunk, and this inner mold has and is formed on an end and defines the outer surface in a necking down gap with this mould one inner surface.

4. the necking down module of jar trunk as claimed in claim 2 is characterized in that, this mould has around an axis and defines a die wall of an axis hole, and this slide block is set in this axis hole along this axis.

5. the necking down module of as claimed in claim 4 jar of trunk, it is characterized in that, this mould also has a necking part that is formed on this die wall inner surface, and the internal diameter of this necking part is less than the external diameter of this jar trunk, and by shrinking away from an ora terminalis of this axis another ora terminalis towards contiguous this axis.

6. the necking down module of as claimed in claim 1 jar of trunk is characterized in that, this necking down module also includes a chassis of this jar of carrying trunk.