CN113059758B

CN113059758B - Storage battery shell injection mold and machining process thereof

Info

Publication number: CN113059758B
Application number: CN202110511231.9A
Authority: CN
Inventors: 韩峰; 黄少云; 尹明成; 戴笛; 叶治胜; 吴华海; 王永宁; 谭伟
Original assignee: Zhejiang Tianneng Jinggong Technology Co ltd
Current assignee: Zhejiang Tianneng Jinggong Technology Co ltd
Priority date: 2021-05-11
Filing date: 2021-05-11
Publication date: 2022-12-06
Anticipated expiration: 2041-05-11
Also published as: CN113059758A

Abstract

The invention discloses an injection mold for a storage battery shell and a processing technology thereof, and relates to the technical field of injection molds. The invention comprises a bottom plate and a die cavity plate; the bottom plate is connected with a mounting plate and a plurality of mold cores; the mounting plate is provided with a rectangular notch in clearance fit with the mold core; two adjacent inner sides of the rectangular notch are provided with backing plate notches, backing plates are arranged in the backing plate notches, and two adjacent inner sides of the rectangular notch are provided with adjusting notches; the adjusting notch is internally matched with the wedge-shaped block; the inclined plane of the wedge-shaped block is abutted against the inner side surface of the adjusting notch, and the other side surface of the wedge-shaped block is tightly attached to the side surface of the mold core; the die cavity plate is provided with a mounting notch; a die cavity block is connected in the mounting groove; the die cavity block is provided with a die cavity matched with the die core. According to the invention, the position of the mold core is adjusted by arranging the base plate and the wedge-shaped block, so that the wall thickness of the storage battery shell is adjusted, and the problem that the wall thickness of the conventional storage battery shell is inconvenient to adjust is solved; embedding a mold cavity block in the mold cavity plate; the problem of current die cavity board high in production cost is solved.

Description

Storage battery shell injection mold and machining process thereof

Technical Field

The invention belongs to the technical field of injection molds, and particularly relates to an injection mold for a storage battery shell and a processing technology thereof.

Background

The existing storage battery shell injection mold comprises a movable mold and a fixed mold, wherein the movable mold is fixed on a movable template of an injection molding machine and moves along with the movable template when the mold is opened and closed. When the existing traditional injection mold is used for demolding products, an ejector rod of an injection molding machine is usually adopted or a pull plate and the like are utilized to pull a push plate during mold opening so as to realize demolding of the products.

The movable die usually comprises two or four die cores, each die core is composed of a plurality of core blocks, and the existing core blocks are processed separately, so that the size error is increased after the die cores are formed, and the overall quality of the storage battery shell is low. Simultaneously, current battery case wall thickness through the clearance decision between mold core and the mould intracavity wall, and current mold core passes through fixed mounting such as screw, because the existence of processing or equipment error for the non-uniform condition appears in the thickness of battery lateral wall, and adjusts very inconveniently, can't realize quick adjustment, influences battery case's production quality and production efficiency.

The existing fixed die comprises a die cavity plate, wherein a die cavity is formed in the die cavity plate and is matched with a die core. Because there is great pressure during moulding plastics for after the die cavity board used for a long time, deformation or crackle easily appeared in die cavity department, lead to the mould to scrap, and come preparation die cavity board through improving the material specification, make holistic manufacturing cost promote again.

Therefore, it is highly desirable to design an injection mold for a battery case to improve the injection quality of the battery case, and to improve the processing technology of the mold to ensure the working performance of the mold.

Disclosure of Invention

The invention aims to provide an injection mold for a storage battery shell and a processing technology thereof, wherein the position of a mold core is convenient to adjust by arranging a base plate and a wedge-shaped block, so that the wall thickness of the storage battery shell is adjusted, and the problem of inconvenience in wall thickness adjustment of the conventional storage battery shell is solved; embedding a mold cavity block in the mold cavity plate; the problem of current die cavity board manufacturing cost high is solved.

In order to solve the technical problems, the invention is realized by the following technical scheme:

the invention relates to a storage battery shell injection mold and a processing technology thereof, comprising a movable mold and a fixed mold; the movable mold comprises a bottom plate; one side of the bottom plate is fixedly connected with a mounting plate and a plurality of mold cores; the fixed die comprises a die cavity plate; the mold core is composed of a plurality of mold core blocks; one end face of the mold core block is provided with a threaded blind hole; the bottom plate is provided with through holes which correspond to the threaded blind holes one to one;

the mounting plate is provided with a rectangular notch in clearance fit with the mold core; two adjacent inner sides of the rectangular notch are provided with backing plate notches, backing plates are arranged in the backing plate notches, and two adjacent inner sides of the rectangular notch are provided with adjusting notches; the inner part of the adjusting notch is in clearance fit with the wedge block; the inclined plane of the wedge-shaped block is abutted against the inner side face of the adjusting groove opening, and the other side face of the wedge-shaped block is tightly attached to the side face of the mold core and is used for extruding the mold core through the wedge-shaped block so that the mold core is tightly attached to the base plate; the die cavity plate is provided with a rectangular mounting notch; a die cavity block is fixedly connected in the mounting groove opening; the die cavity block is provided with a die cavity matched with the die core.

Furthermore, an inner side surface of the adjusting notch is an inclined surface matched with the inclined surface of the wedge block.

Furthermore, the die cavity block is provided with a through notch; the three adjacent inner side surfaces of the through notches are provided with module notches; the module notch is internally provided with modules, and the three modules and one inner side surface of the through notch enclose a mold cavity.

Furthermore, the mechanical property of the die cavity block is superior to that of the die cavity plate.

A processing technology of an injection mold of a storage battery shell comprises a processing method of a mold core block and a processing method of a mold cavity plate; the processing method of the die core block comprises the following steps:

a. one or more threaded holes are formed in the side surface of one of the plurality of die core blocks which form the die core block, and connecting through holes corresponding to the threaded holes are formed in the other die core blocks;

b. the threaded holes of the die core blocks are connected with the screws, the screws sequentially penetrate through the connecting through holes of the rest die core blocks, and the die core blocks are mutually attached and fixed through nuts and are kept flush;

c. installing a plurality of mutually fixed mold core blocks on a linear cutting equipment workbench, and synchronously processing the plurality of mold core blocks through linear cutting equipment to obtain a required mold core structure;

the processing method of the die cavity plate comprises the following steps:

d. processing a mounting notch on the die cavity plate;

e. processing a die cavity block according to the size of the mounting notch, and enabling the die cavity block to be in interference fit with the mounting notch;

f. and (4) loading the die cavity block into the mounting groove opening, and realizing the mutual connection and fixation through interference fit.

The invention has the following beneficial effects:

1. according to the invention, the wedge block and the base plate are arranged in the rectangular groove formed in the mounting plate, the mold core is extruded through the wedge block and is abutted against the base plate, and the position of the mold core is adjusted by changing the thickness of the base plate, so that the wall thickness of the storage battery shell is adjusted, the adjusting process is simple and convenient, and the production quality and the production efficiency of the storage battery shell are effectively ensured.

2. According to the invention, the die cavity block is embedded in the die cavity plate, the mechanical property of the die cavity block is improved, so that the overall performance of the die cavity plate is improved, and the die cavity block can be only replaced when worn or damaged, thereby being beneficial to reducing the production cost.

Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of an injection mold for a battery case according to the present invention;

FIG. 2 is a schematic structural diagram of a movable mold;

FIG. 3 is a schematic structural view of the base plate and the mounting plate;

FIG. 4 is a schematic view of the mounting plate;

FIG. 5 is a schematic structural view of a mold core;

FIG. 6 is a half sectional view of the mold core;

FIG. 7 is a schematic view of a wedge block;

FIG. 8 is a schematic structural view of a cavity plate;

FIG. 9 is an exploded view of the structure of the cavity plate and cavity block;

in the drawings, the reference numbers indicate the following list of parts:

1-bottom plate, 2-mounting plate, 3-mold core, 4-mold cavity plate, 5-push plate, 6-fixing plate, 7-hot runner plate, 8-base plate, 201-rectangular notch, 202-backing plate notch, 203-backing plate, 204-adjusting notch, 205-wedge block, 301-mold core block, 302-threaded blind hole, 303-threaded hole, 304-connecting through hole, 401-mounting notch, 402-mold cavity block, 403-mold cavity, 404-through notch, 405-mold notch, 406-mold.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "opening," "upper," "lower," "thickness," "top," "middle," "length," "inner," "peripheral," and the like are used in an orientation or positional relationship that is merely for convenience in describing and simplifying the description, and do not indicate or imply that the referenced component or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present invention.

Referring to fig. 1, the invention relates to an injection mold for a storage battery shell and a processing technology thereof, comprising a movable mold and a fixed mold; the movable mould includes

bottom plate

1, and 1 one side of bottom plate is through screw fixedly connected with mounting panel 2 and two mold cores 3 to bottom plate 1 has push pedal 5 through guide pillar swing joint. The stationary mold comprises a mold cavity plate 4, and a base plate 8, a hot runner plate 7 and a fixing plate 6.

As shown in fig. 2 to 7, the mold core 3 is composed of a plurality of mold core pieces 301, and the number of the mold core pieces 301 is determined according to the number of the required separation cavities in the accumulator shell, and the number is six. The die core block 301 is of a cuboid structure, and a threaded blind hole 302 is formed in one end face of the die core block 301; the bottom plate 1 is provided with through holes corresponding to the threaded blind holes 302 one to one, the diameter of each through hole is larger than that of the threaded blind hole 302, and the die core block 301 is fixed by connecting the through holes with the threaded blind holes 302 through screws.

The mounting plate 2 is provided with a rectangular notch 201 which is in clearance fit with the mold core 3; backing plate notch 202 has all been seted up to two adjacent medial surfaces of rectangle notch 201, and the built-in backing plate 203 that is equipped with of backing plate notch 202, and regulation notch 204 has all been seted up to two other adjacent medial surfaces of rectangle notch 201. The inner part of the adjusting slot 204 is in clearance fit with a wedge block 205, and the wedge block 205 is provided with a connecting hole which is connected with the bottom plate 1 through a screw. An inner side surface of the adjusting slot 204 is an inclined surface matched with the inclined surface of the wedge block 205. The inclined surface of the wedge block 205 is abutted against the inclined inner side surface of the adjusting notch 204, and the other opposite side surface is tightly attached to the side surface of the mold core 3, when the wedge block 205 is locked, the mold core 3 is horizontally extruded under the action of the inclined surface of the wedge block 205 and the inclined surface of the adjusting notch 204, so that the mold core 3 is tightly attached to the backing plate 203 by extruding the mold core 3 through the wedge block 205. At this time, the core block 301 is locked with the base plate 1 by screws, so as to fix the core 3.

When the wall thickness of the storage battery shell needs to be adjusted, the base plates 203 with different thicknesses are replaced, so that the position of the mold core 3 is positioned, the position of the mold core 3 is adjusted, and then the wall thickness of the storage battery shell is adjusted.

As shown in fig. 8 and 9, the cavity plate 4 is provided with a rectangular mounting notch 401; fixedly connected with die cavity piece 402 in the installation notch 401, die cavity piece 402 is seted up with die core 3 complex die cavity 403, and die cavity piece 402 accessible and installation notch 401 interference fit realize the installation fixed.

Wherein, the die cavity block 402 is provided with a through notch 404; the three adjacent inner side surfaces of the through notch 404 are provided with module notches 405; the mold blocks 406 are disposed in the mold block slots 405, and the three mold blocks 406 and the through slots 404 enclose the mold cavity 403 on one inner side. The module 406 may be attached to the fixation plate 6 by screws. A T-shaped groove can be formed in the inner side face of the module notch 405, and a sliding block matched with the T-shaped groove is arranged on the module 406, so that assembling and mounting accuracy is improved.

Meanwhile, the mechanical property of the cavity block 402 is superior to that of the cavity plate 4, so that the impact resistance, deformation resistance and fracture resistance of the cavity block 402 are improved, the performance of the cavity plate 4 is improved, and the condition that the production cost is increased more due to the performance improvement of the whole cavity plate 4 is avoided. And when the cavity block 402 is worn or damaged, only the cavity block 402 can be replaced, thereby being beneficial to reducing the maintenance and production cost of the whole mold.

A processing technology of an injection mold of a storage battery shell comprises a processing method of a mold core block 301 and a processing method of a mold cavity plate 4; the processing method of the die core block 301 comprises the following steps:

a. one or more threaded holes 303, such as two, are formed in the side surface of one of the six die core pieces 301 constituting the die core piece 301, and the other die core pieces 301 are provided with connecting through holes 304 corresponding to the threaded holes 303.

b. The threaded holes 303 of the die core blocks 301 are connected with screws, the screws sequentially penetrate through the connecting through holes 304 of the rest die core blocks 301, and the die core blocks 301 are tightly attached and fixed to each other through nuts and are kept flush.

c. And (3) arranging the six die core blocks 301 fixed with each other on a workbench of an online cutting device, and synchronously processing the six die core blocks 301 by the online cutting device to obtain the required structure of the die core 3. The six die core blocks 301 are fixedly connected and then processed in a unified mode, so that the size of each die core block 301 can be kept unified, and compared with single processing, the processing precision of the die core 3 is effectively improved, and the product quality of the storage battery shell is improved.

The mounting plate 2 is mounted on the bottom plate 1, the mold core 3 is connected with the bottom plate 1 through the screws, the screws are not locked at the moment, the position of the mold core 3 is adjusted and fixed through the backing plate 203 and the wedge block 205 on the mounting plate 2, the screws for fixing the mold core 3 are locked after adjustment, and finally the push plate 5 is assembled to complete the assembly of the movable mold.

The processing method of the cavity plate 4 comprises the following steps:

d. a mounting notch 401 is first machined in the cavity plate 4.

e. And then the die cavity block 402 is machined according to the size of the mounting notch 401, and the die cavity block 402 and the mounting notch 401 are in interference fit.

f. The die cavity block 402 is installed in the installation notch 401 through a press-fitting device, and the mutual connection and fixation are realized through interference fit.

After the die cavity plate 4 is manufactured, the hot runner plate 7, the fixed plate 6 and the die cavity plate 4 are sequentially connected and fixed with the base plate 8 through the hot runner plate 7, and the movable die is assembled.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. An injection mold for a storage battery shell comprises a movable mold and a fixed mold; the movable mould comprises a bottom plate (1); one side of the bottom plate (1) is fixedly connected with a mounting plate (2) and a plurality of mold cores (3); the fixed die comprises a die cavity plate (4); the method is characterized in that:

the mold core (3) consists of a plurality of mold core blocks (301); one end surface of the die core block (301) is provided with a threaded blind hole (302); the bottom plate (1) is provided with through holes which correspond to the threaded blind holes (302) one to one;

the mounting plate (2) is provided with a rectangular notch (201) which is in clearance fit with the mold core (3); two adjacent inner sides of the rectangular notch (201) are provided with backing plate notches (202), a backing plate (203) is arranged in each backing plate notch (202), and two other adjacent inner sides of the rectangular notch (201) are provided with adjusting notches (204);

a wedge block (205) is in clearance fit in the adjusting notch (204); the inclined surface of the wedge block (205) is abutted against the inner side surface of the adjusting notch (204), and the other side surface of the wedge block is tightly attached to the side surface of the mold core (3) and used for extruding the mold core (3) through the wedge block (205) so that the mold core (3) is tightly attached to the backing plate (203);

the die cavity plate (4) is provided with a rectangular mounting notch (401); a die cavity block (402) is fixedly connected in the mounting notch (401); the die cavity block (402) is provided with a die cavity (403) matched with the die core (3);

wherein the cavity block (402) is provided with a through notch (404); module notches (405) are formed in three adjacent inner side faces of the through notches (404); the module notch (405) is internally provided with the modules (406), and the three modules (406) and one inner side surface of the through notch (404) enclose a mold cavity (403).

2. The battery case injection mold according to claim 1, wherein an inner side surface of the adjustment notch (204) is an inclined surface adapted to an inclined surface of the wedge block (205).

3. An injection mould for battery cases according to claim 1 or 2, characterised in that the mechanical properties of the cavity block (402) are superior to those of the cavity plate (4).

4. A process for manufacturing an injection mold for a battery case according to any one of claims 1 to 3, comprising a method for manufacturing a mold core block (301) and a method for manufacturing a cavity plate (4); the machining method of the die core block (301) is characterized by comprising the following steps:

a. one or more threaded holes (303) are formed in the side surface of one (301) of the plurality of die core blocks (301) forming the die core block (301), and the other die core blocks (301) are provided with connecting through holes (304) corresponding to the threaded holes (303);

b. the threaded holes (303) of the die core blocks (301) are connected with the screws, the screws sequentially penetrate through the connecting through holes (304) of the rest die core blocks (301), and the die core blocks (301) are mutually attached and fixed through nuts and are kept flush;

c. installing a plurality of mutually fixed mold core blocks (301) on a linear cutting equipment workbench, and synchronously processing the plurality of mold core blocks (301) through the linear cutting equipment to obtain a required mold core (3) structure;

the processing method of the die cavity plate (4) comprises the following steps:

d. machining a mounting notch (401) on the cavity plate (4);

e. machining a mold cavity block (402) according to the size of the mounting notch (401), and enabling the mold cavity block (402) to be in interference fit with the mounting notch (401);

f. and (3) installing the cavity block (402) into the mounting notch (401) and realizing the mutual connection and fixation through interference fit.