CN207170695U

CN207170695U - A kind of thinning drawing forming mould

Info

Publication number: CN207170695U
Application number: CN201721002951.8U
Authority: CN
Inventors: 蔡绍雄; 吕军; 高明; 张宝
Original assignee: Sichuan Rainbow Technology Co Ltd
Current assignee: Sichuan Rainbow Technology Co Ltd
Priority date: 2017-08-11
Filing date: 2017-08-11
Publication date: 2018-04-03
Anticipated expiration: 2027-08-11

Abstract

The utility model discloses a kind of thinning drawing forming mould, and it includes upper die and lower die, and the upper mould cooperates with lower mould；The lower mould is made up of face mould and bed die, and backing plate is provided between face mould and bed die；The face mould top and bottom and upper mould adjacent are all an inclined-plane so as to form certain gap between upper mould, inclined-plane angle is respectively R1 and C1, also all for inclined-plane so as to form certain gap between upper mould at bed die top and bottom and upper mould adjacent surface, inclined-plane angle is respectively R2 and C2.The utility model uses the lower mould being made up of face mould and bed die compared to existing product, and original one-off drawing is become into 2 times and drawn high step by step so that product is more uniform, and product wall thickness is more accurate, and qualification rate is higher, so as to greatly improve production efficiency.

Description

A kind of thinning drawing forming mould

Technical field

The utility model relates to injection mold technology, specifically a kind of thinning drawing forming mould.

Background technology

Thin wall battery box hat is in drawing process, with the increase of drawing numbers, the height more and more higher of housing, housing Wall thickness more and more thinner, particularly last time shaping stretching.The wall thickness for being molded box hat is only 0.20~0.25mm.Have 50~ 70mm housing is tightly coated on drift, and stripping force now is very big.Refer to shown in Fig. 1, Fig. 1 is tradition Thin-wall battery case stretch die lamps structure de- material schematic diagram, when draw punch gos up, drive the horn mouth of box hat tight against Discharging set lower plane carry out de- material when because the material of 0.20~0.25mm thickness is relatively thin, very soft, bell-mouthed intensity and just Degree can not bear very big stripping force, often downwardly turned over the rise of drift, in addition translate into box hat effective depth with Under.When overturning lesser extent, cut height can be caused to be forbidden；If upset degree seriously if directly contribute box hat and scrap.

In conventional technique, in order to reduce stripping force, often by draw punch lower end effective depth part, one is processed into Fixed taper, the i.e. diameter of drift lower end are smaller 0.04~0.06mm than the diameter in effective depth portion.Although so design compared with De- material situation is improved well, but completely de- material can not be avoided to fail, and the box hat inner chamber produced is also into certain Taper, general bottom inner diameter 0.05mm smaller than oral area internal diameter or so, product quality reliability is low.And such box hat is often Made troubles when can load battery to cell production companies, the phenomenon of battery core dress not on earth just occurs sometimes.

Simultaneously wall unevenness is often caused in existing technique in the product of shaping because shaping mould is integrative-structure It is even to wait flaw product, so as to influence production efficiency.

Utility model content

The purpose of this utility model is to solve the above problems, there is provided a kind of thinning drawing forming mould, the device will The lower mould of traditional mould is changed to be made up of face mould and bed die, and the mould make it that the product after stretching is more uniform, product quality More preferably, so as to improving production efficiency.

Used technical scheme is as follows to achieve these goals for the utility model：

A kind of thinning drawing forming mould, it includes upper die and lower die, and the upper mould cooperates with lower mould；The lower mould It is made up of face mould and bed die, backing plate is provided between face mould and bed die；The face mould top and bottom and upper mould adjacent are all So as to form certain gap between upper mould, inclined-plane angle is respectively R1 and C1 for one inclined-plane, bed die top and bottom with it is upper Also all for inclined-plane so as to form certain gap between upper mould at mould adjacent surface, inclined-plane angle is respectively R2 and C2.

A kind of further improved thinning drawing forming mould of the utility model, wherein the R1 is more than R2, C1 is more than C2. So in drawing process, product is molded equivalent to being become by one-shot forming step by step so that the quality of product in drawing process More stable, product surface is more uniform, and qualification rate is higher.

The utility model uses the lower mould being made up of face mould and bed die compared to existing product, and original one-off drawing is become Draw high step by step for 2 times so that product is more uniform, and product wall thickness is more accurate, and qualification rate is higher, so as to greatly improve life Produce efficiency.

Therefore the utility model has reasonable in design, simple to operate, the advantages that production efficiency is high.

Brief description of the drawings

Fig. 1 is existing drawing forming mold structural representation.

Fig. 2 is the utility model structure diagram.

In figure：The upper moulds of 1-, 2- face moulds, 3- backing plates, 4- bed dies.

Embodiment

The technical solution of the utility model is described further below in conjunction with accompanying drawing, but the utility model and not only limited In implementation below.

As shown in Figure 2：A kind of thinning drawing forming mould, it includes mould 1 and lower mould, and the upper mould 1 and lower mould are mutual Coordinate.The lower mould is made up of face mould 2 and bed die 4, and backing plate 3 is provided between face mould 2 and bed die 4.The upper end of face mould 2 is with End and upper mould adjacent are all inclined-plane so as to form certain gap between upper mould, and inclined-plane angle is respectively R1 and C1, Also all for inclined-plane so as to form certain gap, inclined-plane angle between upper mould at the top and bottom of bed die 4 and upper mould adjacent surface Respectively R2 and C2.

The utility model passes through the structural improvement to product so that the product thickness after drawing and forming is more uniform, product Quality is higher, and production qualification rate is higher, so as to improving production efficiency.

Above example is only that technology of the present utility model is described further, and is not to limit of the present utility model System, under the general thought for not departing from above-mentioned technical proposal, without creative work or directly carry out equivalent substitution and also belong to this Within the scope of utility model is claimed.

Claims

A kind of 1. thinning drawing forming mould, it is characterised in that：It includes upper die and lower die, and the upper mould cooperates with lower mould； The lower mould is made up of face mould and bed die, and backing plate is provided between face mould and bed die；The face mould top and bottom and upper mould phase Neighbour place is all inclined-plane so as to form certain gap between upper mould, and inclined-plane angle is respectively R1 and C1, bed die upper end and Also all be inclined-plane at lower end and upper mould adjacent surface so as to form certain gap between upper mould, inclined-plane angle be respectively R2 and C2。
A kind of 2. thinning drawing forming mould according to claim 1, it is characterised in that：The R1 is more than R2, and C1 is more than C2。