CN108115888B

CN108115888B - Four-side sliding block and pre-deformed storage battery shell mold

Info

Publication number: CN108115888B
Application number: CN201711324873.8A
Authority: CN
Inventors: 刘海龙; 于铁辉
Original assignee: HUBEI SANJIANG AEROSPACE JIANGHE RUBBER PLASTIC CO Ltd
Current assignee: HUBEI SANJIANG AEROSPACE JIANGHE RUBBER PLASTIC CO Ltd
Priority date: 2017-12-13
Filing date: 2017-12-13
Publication date: 2020-04-21
Anticipated expiration: 2037-12-13
Also published as: CN108115888A

Abstract

The invention relates to a four-side sliding block and a pre-deformed storage battery shell mold, which solves the defects of product concave, no reinforcing or carrying structure on the side wall and the like caused by shrinkage cooling deformation of the conventional mold. This mould is through 4 oblique sliders that set up around the die cavity, can be on battery case simple quick die sinking loose core when shaping rib and draw-in groove, has guaranteed the product size through the shrink volume after the cooling of the protruding compensation of predesign. The die is simple in structure, and verified by batch production, the concave phenomenon on two sides of the plastic shell is thoroughly eliminated, a shaping tool is not needed, the size of a product is kept stable, the production efficiency is greatly improved, and the customer satisfaction is higher.

Description

Four-side sliding block and pre-deformed storage battery shell mold

Technical Field

The invention relates to the technical field of automobile parts, in particular to a four-side sliding block and a pre-deformed storage battery shell mold.

Background

The battery shell is a protective shell wrapped outside the automobile battery jar, the size of the protective shell is large, and a partition plate is arranged in the middle of the protective shell and is convenient for placing a block of battery units. The battery case is the plastics material usually, adopts comparatively simple mould injection moulding more, but because its length and width height is great, very easy shrinkage deformation leads to each to be towards the indent during the cooling after the shaping, thereby has deviated from the qualification rate that former design size influences the product. On the other hand, the battery case structure of production on the market is fairly simple at present, and four sides are the plane, do not set up the draw-in groove that can install the handle, lead to its intensity not enough and carry inconveniently.

Disclosure of Invention

The invention aims to overcome the defects of simple structure and easy shrinkage and deformation after cooling of the conventional storage battery shell and provides a novel storage battery shell mold. The side face of the storage battery shell produced by the die is provided with the ribs and the clamping groove structure, and a deformation compensation mechanism is designed in advance, so that a product with stable and qualified size can be directly manufactured at one time, and the influence of plastic cooling shrinkage deformation is not required to be considered. In order to achieve the purpose, the technical scheme adopted by the invention is as follows:

a four-side sliding block and pre-deformed storage battery shell mold comprises a front mold and a rear mold matched with the front mold, wherein the front mold comprises a front mold base, a front module and inclined sliding blocks, the front module is fixed on the front mold base, four inclined sliding blocks are arranged inside the front module, the four inclined sliding blocks are arranged around four sides of a mold cavity of the mold, and each inclined sliding block is connected with a spring fixed on the front mold base; the rear die comprises a rear die core, a stripper plate, a rear die core fixing plate and a rear die holder, the rear die core is fixed on the rear die core fixing plate, the rear die core and the rear die core fixing plate are integrally fixed on the rear die holder, and the stripper plate is movably arranged on the rear die core and can push the formed storage battery shell to be separated from the rear die core; the middle part of the side wall of the die cavity protrudes outwards.

According to the scheme, the mold cavity protrudes outwards from a position 20mm away from the edge, and the ratio of the side width of the mold cavity to the protruding value is 170: 1.5.

According to the scheme, the included angle of the extension lines of the two oppositely arranged oblique sliders is 16 degrees.

According to the scheme, the inclined sliding block forming surface is provided with a structure for forming the ribs f and the handle clamping grooves e.

Compared with the prior art, the invention has the following beneficial effects: (1) in consideration of the cooling shrinkage effect of the injection molding part, a convex compensation amount is reserved on the side wall, so that the size stability and the qualification rate of the product after cooling are ensured; (2) the side wall of the formed storage battery shell is provided with the ribs and the handle clamping grooves, so that the reinforcing effect is achieved, the carrying is convenient, and multiple purposes are achieved; (3) the die has the advantages that the structure is simple, the inward concave phenomenon on two sides of the plastic shell is thoroughly eliminated through batch production verification, shaping tools are not needed, the size of a product is kept stable, the production efficiency is greatly improved, and the customer satisfaction is high.

Drawings

FIG. 1 is a schematic view of a prior art battery case mold;

FIG. 2 is a schematic front mold view of a battery casing mold of the present invention;

FIG. 3 is a side view of the front mold of the battery casing mold of the present invention;

FIG. 4 is a side view of the back mold of the battery casing mold of the present invention;

FIG. 5 is an enlarged view of a portion of the sidewall projection of the battery casing mold of the present invention;

FIG. 6 is a schematic view of the structure of ribs and handles on the inclined slider forming surface of the battery case mold according to the present invention.

1-a front die holder, 2-a front module, 3-a spring, 4-an inclined slide block, 5-a storage battery shell injection molding piece, 6-a rear die core, 7-a stripper plate, 8-a rear die core fixing plate and 9-a rear die holder.

Detailed Description

In order to make those skilled in the art fully understand the technical solutions and advantages of the present invention, the following embodiments are further described.

Fig. 1 shows a general structure of a current injection mold for a battery case, in which a mold cavity is formed in a whole mold plate, and a rectangular battery case is injection molded by matching with a mold core of another mold plate. In consideration of mold release and cost, no special structure is generally designed on the sidewall of the cavity (at this time, the sidewall of the cavity is flat and vertical to the plane of the mold plate). The side walls of the battery case member molded by the mold shrink inward and deform after cooling, and are inconvenient to carry.

To solve the above problems, the applicant has devised a new battery case mold, as shown in fig. 2 to 5. The die comprises a front die and a rear die which are matched with each other, wherein the front die comprises a front die base, a front die block, a spring and 4 inclined sliding blocks, the front die block is fixed on the front die base, the front die block is internally provided with the 4 inclined sliding blocks which are opposite to each other in pairs and are in contact with each other, the inclined sliding blocks are connected with the front die base through the spring at the bottom, and the middle position of an inclined sliding block enclosure is a cavity. The two opposing slider c and d molding surfaces are recessed (the molded injection-molded part is convex) 20mm from the edge, and the ratio of the height difference of the recesses to the width of the cavity surface is 1.5: 170. The design counteracts the shrinkage of the injection molding piece when cooling, and ensures that the final product has qualified size.

The rear die of the die comprises a rear die base, a rear die core, a stripper plate and a rear die core fixing plate, wherein the rear die core is fixed on the rear die core fixing plate to form a whole, the whole is fixed on the rear die base, and the stripper plate is movably arranged on the rear die core and can move along the rear die core so as to eject out a formed plastic part. The inclined slider is designed to be inclined by 16 degrees, and is mainly used for utilizing the forming ribs and the handle clamping grooves to still simply and quickly open the mold and loose the core.

The operation process of the die is as follows: when the mold is closed, the rear mold core enters the cavity, the spring is in a compressed state, the molten plastic after pressure maintaining injection fills the cavity, and the mold is opened after cooling. When the mold is opened, the front mold and the rear mold are separated, the four inclined slide blocks of the front mold are outwards flicked in an inclined mode through the springs, after the front mold and the rear mold are completely separated from the storage battery shell, the injection molding part and the mold are not interfered any more, at the moment, the injection molding part product is separated from the rear mold through the discharging plate, and the part is taken out.

Through batch production verification, the die provided by the invention can form ribs f and a clamping groove structure e on the side surface of the storage battery shell, can easily open the die and loose the core, and the reserved protruding design allowance of the side surface also thoroughly eliminates the inward concave phenomenon caused by cooling shrinkage of two sides of the plastic shell, so that the obtained product is stable in size, high in qualification rate and improved in production efficiency.

Claims

1. A four-side sliding block and pre-deformed storage battery shell mold is characterized by comprising a front mold and a rear mold matched with the front mold, wherein the front mold comprises a front mold seat, a front mold block and inclined sliding blocks, the front mold block is fixed on the front mold seat, four inclined sliding blocks are arranged inside the front mold block and surround four sides of a mold cavity of the mold, and each inclined sliding block is connected with a spring fixed on the front mold seat; the rear die comprises a rear die core, a stripper plate, a rear die core fixing plate and a rear die holder, the rear die core is fixed on the rear die core fixing plate, the rear die core and the rear die core fixing plate are integrally fixed on the rear die holder, and the stripper plate is movably arranged on the rear die core and can push the formed storage battery shell to be separated from the rear die core; the middle part of the side wall of the die cavity protrudes outwards from a position 20mm away from the edge, and the ratio of the width of the side surface of the die cavity to the protruding value is 170: 1.5; and the inclined sliding block forming surface is provided with a structure for forming ribs and a handle clamping groove.

2. The four-sided slider and pre-deformed battery case mold according to claim 1, wherein: the included angle of the extension lines of the two oppositely arranged oblique sliders is 16 degrees.