CN202293193U

CN202293193U - Battery case injection mould

Info

Publication number: CN202293193U
Application number: CN2011203643584U
Authority: CN
Inventors: 路俊斗; 胡天春; 齐国军
Original assignee: Zhaoqing Leoch Battery Technology Co Ltd
Current assignee: Zhaoqing Leoch Battery Technology Co Ltd
Priority date: 2011-09-26
Filing date: 2011-09-26
Publication date: 2012-07-04
Anticipated expiration: 2021-09-26

Abstract

The utility model relates to the field of injection mould, in particular to a larger battery case mould provided with a reverse button. The utility model discloses a battery case injection mould, comprising an elastic block 1, an A plate 3, a water gap plate 2 and the like. In the battery case injection mould disclosed by the utility model, the small end face of the elastic block 1 is provided with a raised backhoe 4, and the water gap plate 2 is provided with a backhoe combination slot 6 at a position corresponding to the backhoe 4. By adopting the structure, injection moulding pressure born by the elastic block 1 is partially shared by the water gap plate 2, thus pressure of the elastic block 1 which is shared by the A plate 3 is reduced, the A plate 3 is difficult to crack, and service life of the A plate 3 is prolonged. Meanwhile, the elastic block 1 and the water gap plate 2 can be better positioned by adopting the structure.

Description

A kind of battery case injection mold

Technical field

This structure is applicable to injection mold, particularly with back-off, battery case mould that product is bigger.

Background technology

In the battery case of battery, some product (like Fig. 1, shown in Figure 2) band back-off (shown among Fig. 2 12) need be done the bullet piece in therefore producing and carry out the demoulding.The general common structural of bullet piece is as shown in Figure 3; Bullet piece both sides have guide groove; It can be in mould A plate (as shown in Figure 6) along A plate bullet piece motion guide rail the moving on the gradient direction that fix, for making things convenient for the motion of bullet piece, there is less space in the bullet piece with the guide rail face of combining.During die sinking, under the acting in conjunction of drag hook, spring, produce the displacement of horizontal direction and vertical direction simultaneously, make back-off position and product break away from.The small end face of bullet piece and mould mouth of a river plate are close to during matched moulds, other part one common peripheral forming cavities of bullet piece and mould, and the bullet piece inclined-plane and the A plate of die cavity are close together towards the inclined-plane of die cavity dorsad.

When the mould of said structure when producing bigger product, it is bigger to advance the glue amount, required injection pressure also will strengthen, and advances the glue point near the bullet piece, so the bullet piece has born very big injection pressure.After the bullet piece receives injection pressure, can power be delivered to that face that itself and A plate are close to, therefore, be easy to make mould A plate cracking, especially A plate to ftracture, thereby make mould scrap near the R angle and from advancing that near end of glue point.

The utility model content

Other structures that the purpose of the utility model is to provide a kind of injection pressure that can effectively the bullet piece be born to be distributed to beyond the A plate are shared, thereby reduce the battery case injection mold of A plate cracking risk.

For realizing this purpose; The utility model provides a kind of bullet block structured battery case injection mold with backhoe; Comprise bullet piece 1, mouth of a river plate 2, A plate 3, said A plate has towards the inclined-plane 11 of die cavity, and said bullet piece can be done tiltedly along the movement locus that limits on the A plate and move; And the small end face of said bullet piece and mouth of a river plate are close to, and said small end face is provided with protruding backhoe 4; Said mouth of a river plate 2 is being provided with backhoe mating groove 6 with backhoe 4 correspondence positions.

Said backhoe 4 is that one side is the bulge-structure on inclined-plane at least.

Further, above-mentioned backhoe 4 one side of die cavity dorsad is the inclined-plane, and the gradient on said inclined-plane 5 is greater than the gradient on A plate inclined-plane 11.

Said backhoe mating groove 6 and backhoe 4 tight fits.

The beneficial effect of the utility model is:

1, during injection moulding, through backhoe and backhoe mating groove, mouth of a river plate can effectively be shared the injection pressure that the bullet piece is born, and then effectively reduces the pressure that the A plate is born, and reduces the risk of A plate cracking, improves die life.

2, during mold-closing injection, therefore backhoe and backhoe mating groove tight fit can help bullet piece and mouth of a river plate to locate, and reach pinpoint effect.

Description of drawings

Fig. 1 is the battery battery case;

Fig. 2 is the profile of Fig. 1 battery battery case;

Fig. 3 is a bullet block structure sketch map of not being with backhoe;

Fig. 4 is the bullet block structure sketch map of band backhoe among the utility model embodiment;

Fig. 5 is a structural representation under the matched moulds state among the utility model embodiment;

Fig. 6 is an A plate part sketch map among the utility model embodiment;

Fig. 7 is a mouth of a river plate part sketch map among the utility model embodiment.

The specific embodiment

Below through concrete experimental example and combine accompanying drawing that the utility model is done further explain.Following experimental example is only further explained the utility model, should not be construed as the restriction to the utility model.

See also shown in Fig. 4-7; This injection mold comprises structures such as bullet piece 1, A plate 3, mouth of a river plate 2, and wherein, bullet piece 1 can move along the constant inclined surface of A plate bullet piece motion guide rail 7; Mainly bullet piece 1 is flicked during die sinking by spring 8; 9 of drag hooks are assisted when starting die sinking and are drawn back bullet piece 1, and at this moment, bullet piece 1 moves along the constant inclined surface direction of bullet piece motion guide rail 7 and separates with mouth of a river plate 2.During matched moulds, pattern tool plastic injection molding machine clamp force promotes push pedal 10, and push pedal 10 promotion bullet pieces 1 move and mouth of a river plate 2 tight fits along the gradient direction of bullet piece motion guide rail 7 then, reaches to reset.

The structural principle of the utility model is described below:

On the small end face of bullet piece 1, do convexity as shown in Figure 4, i.e. backhoe 4, this backhoe can design according to actual conditions.In the utility model, the preferably Position Design backhoe 4 between two adjacent on bullet piece small end face spring eyes has as shown in Figure 4ly designed two backhoes 4 respectively between three adjacent spring eyes.Backhoe that face of die cavity dorsad need beveling be backhoe inclined-plane 5; Help matched moulds like this; As shown in Figure 5, the gradient on the inclined-plane 5 of above-mentioned backhoe is greater than the gradient on A plate inclined-plane 11, and the gradient on its A plate inclined-plane 11 is the gradient of the oblique movement locus that the bullet piece done on the A plate.The purpose of doing like this is that backhoe inclined-plane 5 is stuck when preventing the die sinking of bullet piece.Other sides of backhoe are beveling according to actual needs also, and its gradient is the 5-15 degree, mainly plays positioning action.

As shown in Figure 5, the groove that cooperates with backhoe is done in plate 2 relevant positions at the mouth of a river, and promptly the backhoe mating groove 6, and this groove designs according to the concrete structure of corresponding backhoe, and designing requirement is backhoe and this groove tight fit on the bullet piece when guaranteeing matched moulds.

Like this when injection moulding; Through this group structure; Mouth of a river plate can be shared the injection pressure that part bullet piece is born: the injection pressure of the horizontal direction that the bullet piece bore can part be shared to the plate of the mouth of a river through this structure of backhoe that is embedded into mouth of a river plate, makes A plate and mouth of a river plate share the injection pressure that is born on the bullet piece jointly, thereby can effectively reduce the pressure that the A plate is born; Reduce the risk of A plate cracking, improve die life.

Through the corresponding relation of this group structure, also can help mouth of a river plate and bullet piece better to locate simultaneously, reach pinpoint effect.

Above content is the further explain that combines concrete embodiment that the utility model is done, and can not assert that the practical implementation of the utility model is confined to these explanations.For the those of ordinary skill of technical field under the utility model, under the prerequisite that does not break away from the utility model design, can also make some simple deduction or replace, all should be regarded as belonging to the protection domain of the utility model.

Claims

1. battery case injection mold; Comprise bullet piece (1), mouth of a river plate (2), A plate (3); Said A plate (3) has the inclined-plane (11) towards die cavity; Said bullet piece (1) can be done oblique motion along the movement locus that A plate (3) go up to limit, and the small end face of said bullet piece (1) is close to mouth of a river plate (2), and it is characterized in that: said small end face is provided with the backhoe (4) of convexity; Said mouth of a river plate (2) is being provided with backhoe mating groove (6) with backhoe (4) correspondence position.

2. mould according to claim 1 is characterized in that, said backhoe (4) is that one side is the bulge-structure on inclined-plane at least.

3. mould according to claim 2 is characterized in that, said backhoe (4) one side of die cavity dorsad is the inclined-plane, and the gradient of said inclined-plane (5) is greater than the gradient on A plate inclined-plane (11).

4. according to each described mould among the claim 1-3, it is characterized in that said backhoe mating groove (6) and backhoe (4) tight fit.