CN210477670U

CN210477670U - A battery cover hot runner plastic mold

Info

Publication number: CN210477670U
Application number: CN201921022737.8U
Authority: CN
Inventors: 缪琦亮
Original assignee: Younaifu Changxing Automation Equipment Co ltd
Current assignee: Shanghai Shicai Electronics Co ltd; Wang Conghai
Priority date: 2019-07-03
Filing date: 2019-07-03
Publication date: 2020-05-08
Anticipated expiration: 2029-07-03

Abstract

The utility model relates to a battery cover hot runner plastic mould, including the front mould fixed plate, the hot runner board, the A template, with A template complex B template, the square iron, back mould fixed plate, thimble bottom plate and thimble panel, set up the hot runner system in the hot runner board, including the flow distribution plate, the flow distribution plate sets up the sprue pipe towards one side of front mould fixed plate, it sets up sprue a and sprue B towards one side of A template, sprue pipe and sprue a and sprue B intercommunication set up, become the slope setting between the line between sprue a and sprue B and the long limit of fashioned battery cover, the glue outlet of sprue a and sprue B is just to the glue inlet point of fashioned battery cover, glue inlet point sets up in one side of the acid filling mouth a of battery cover; the utility model overcomes the mould shaping has the waste material to produce, and shaping cycle is efficient, and the big mould life-span of injection pressure is short and the shaping product smooth finish is poor, the internal stress is big, the surface has the bubble, easily appears warp, glues thick inhomogeneous problem.

Description

Plastic mold for hot runner of storage battery cover

Technical Field

The utility model relates to an injection moulding mould technical field especially relates to a battery lid hot runner plastic mould.

Background

The storage battery industry develops rapidly, the production demand of a shell matched with a storage battery is large, the existing storage battery shell production mold is generally a cold runner mold, (plastic in a molten state enters a mold cavity through a sprue bush, a runner and a sprue), and the storage battery shell production mold has the following problems: 1: after the cold material channel mold is opened, waste materials (water gap materials) are formed at the sprue bush, the runner and the sprue part; 2: the molding cycle is long, the pressure loss is large, and the production efficiency is low; 3 the surface finish of the formed product is low and the wall thickness is not uniform; 4, the mechanical property is lower.

A chinese utility model patent with an issued publication number of CN206186258U discloses a splitter plate of a hot runner system, which optimizes the design of corners and intersecting angles, realizes smooth transition, and effectively reduces shearing force; the formed flow distribution plate is free from a plug, so that poor color change caused by matching with a gap is avoided, the controllability of the finish degree of the surface of the flow channel during processing is enhanced, and the possibility of material sticking is reduced; in addition, an optimal flow channel can be designed according to the determination of the glue inlet point position of the product.

However, it has the following problems: firstly, the runner is inconvenient to process and high in manufacturing cost, and when the runner is used for multi-cavity molding, the product is easy to warp and deform, the glue thickness is not uniformly distributed, and the product is too large in material waste and internal stress and has bubbles on the surface during injection molding.

SUMMERY OF THE UTILITY MODEL

The utility model aims at prior art's weak point, the utility model provides a battery lid hot runner plastic mould, through set up the hot runner board on the mould, set up hot runner system in the hot runner board, and the limit that sets up line between two purt mouths of hot runner system and battery lid becomes the slope setting, make two purt mouths aim at respectively and cover the battery and go up the gluey point of advancing that is located the recess, and then it produces to have the waste material among the mould forming process to have overcome, fashioned cycle length is inefficient, the big mould life-span of injection pressure is short and fashioned product smooth finish is poor, the internal stress is too big, there is the bubble on the surface, the warpage appears easily, the inhomogeneous problem of thick distribution of gluing.

Aiming at the technical problems, the technical scheme is as follows:

a hot runner plastic mold for a storage battery cover comprises a front mold fixing plate, a hot runner plate fixedly connected with the front mold fixing plate, an A mold plate fixedly connected with the hot runner plate, a B mold plate matched with the A mold plate, square iron fixedly connected with the B mold plate and a rear mold fixing plate fixedly connected with the square iron, wherein an ejector pin base plate is arranged between the left square iron and the right square iron on the rear mold fixing plate, an ejector pin panel is arranged on the ejector pin base plate, a hot runner system is arranged in the hot runner plate and comprises a splitter plate, a main runner pipe is arranged on one surface of the splitter plate facing the front mold fixing plate, a sprue bushing a and a sprue bushing B are arranged on one surface facing the A mold plate, the main runner pipe, the sprue bushing a and the sprue bushing B are communicated, and a connecting line between the sprue bushing a and the sprue bushing B is obliquely arranged with the long edge of a formed storage battery cover, and the glue outlets of the squirt nozzle a and the squirt nozzle b are opposite to a glue inlet point of the formed storage battery cover, and the glue inlet point is arranged on one side of the acid adding opening a of the storage battery cover.

Preferably, the hot runner plate is provided with an installation groove, the splitter plate is installed in the installation groove, the edge of the splitter plate and the edge of the hot runner plate are arranged in an inclined manner, and two squirts on the splitter plate are arranged diagonally relative to the hot runner plate.

As a preferred, the side of A template is provided with side shaping subassembly in the position department that is close to the B template, and this side shaping subassembly is used for shaping product perpendicular to drawing of patterns ascending structure in the side, and single battery lid product bilateral symmetry sets up two side shaping subassemblies, the utility model discloses in be two moulds, its left and right sides symmetry at the A template sets up two sets of four side shaping subassemblies promptly.

Preferably, the side edge forming assembly comprises a fixing plate a fixed on the template A, an oil cylinder fixed on the fixing plate a, a slider seat driven by the oil cylinder to move forward and backward, a fixing plate b fixed on the slider seat and a slider insert fixed on the fixing plate b.

Preferably, a main flow channel a is formed in the main flow channel pipe, a main flow channel b communicated with the main flow channel a, a branch flow channel a and a branch flow channel b communicated with the main flow channel b are formed in the flow distribution plate, a branch flow channel c communicated with the branch flow channel a is formed in the squirt nozzle a, and a branch flow channel d communicated with the branch flow channel b is formed in the squirt nozzle b.

Preferably, the glue inlet point is arranged in the cover plate groove on the side of the acid adding port a and is close to the middle position of the storage battery cover.

Preferably, the branch channels a and b are symmetrically arranged on both sides of the main channel b.

Preferably, the main runner pipe is arranged at the right middle position of the splitter plate; the end part of the main runner pipe is provided with a positioning sleeve.

Preferably, a hot runner junction box is further disposed on a side edge of the hot runner plate, the hot runner junction box is used for being matched with an external temperature control box to control temperatures of various positions of the hot runner system, and the temperature control box is not shown in the drawings of the specification as a conventional technical means, and is not described in detail herein.

Preferably, the main runner pipe, the squirt nozzle a and the squirt nozzle b are detachably and hermetically connected with the flow distribution plate.

Preferably, the circumference of the flow distribution plate, the squirt nozzle a and the squirt nozzle b is provided with a heating element.

As a further preference, the distance between the glue inlet point and the acid adding port in the middle of the storage battery cover is L, and the L is more than 12mm and less than 18 mm.

It should be noted that the hot runner plastic mold is suitable for use with battery covers of types 38AH, 45AH and 56 AH;

when the 38AH storage battery cover is subjected to injection molding, the temperature of injected molten plastic is set to be 220 ℃ and the injection pressure is set to be 90MPa, segmented injection is adopted, the injection time is 5s, and pressure maintaining is carried out after the injection molding is finished, the pressure maintaining pressure is 65MPa and the pressure maintaining time is 3 s; stopping feeding the rubber after the injection and pressure maintaining are finished, starting cooling for 25s, and opening the mold to take out the part after cooling;

when the 45AH storage battery cover is subjected to injection molding, the temperature of injected molten plastic is set to be 220 ℃ and the injection pressure is set to be 95MPa, sectional injection is adopted, the injection time is 6s, and pressure maintaining is carried out after the injection molding is finished, wherein the pressure maintaining pressure is 70MPa and the pressure maintaining time is 3 s; stopping feeding the rubber after the injection and pressure maintaining are finished, starting cooling for 28s, and opening the mold to take out the part after cooling;

when the 56AH storage battery cover is subjected to injection molding, the temperature of injected molten plastic is set to be 220 ℃, the injection pressure is set to be 100MPa, sectional injection is adopted, the injection time is 6s, and pressure maintaining is carried out after the injection molding is finished, the pressure maintaining pressure is 75MPa, and the pressure maintaining time is 4 s; and stopping feeding the rubber after the injection and pressure maintaining are finished, starting cooling for 28s, and opening the mold to take out the part after cooling.

The beneficial effects of this embodiment:

1. in the utility model, the hot runner plate is arranged on the mould, and the hot runner system is arranged in the hot runner plate, so that the molten plastic directly enters the mould cavity without waste material in the storage battery cover forming process, the forming period is shortened, the production efficiency is improved, the automatic production degree is improved, the surface smoothness of the product is good, and the mechanical property of the product is improved; in addition, the injection pressure is reduced, and the service life of the mold is prolonged; the multi-cavity mold can ensure uniform filling quality all the time;

2. the hot runner in the utility model has simple structure, convenient manufacture and low cost, the symmetrical arrangement of the left and right runners ensures that the quality of the storage battery cover formed by one and two can be ensured, in addition, the connecting line between the two squirts is arranged to be inclined with the edge of the storage battery cover, so that the squirt nozzle a and the squirt nozzle b can be respectively aligned to the glue inlet points on the storage battery cover in the groove while the main runner pipe is aligned to the middle position of the die cavity, and the formed storage battery cover has less warping deformation and most uniform glue thickness distribution when the glue inlet points are arranged at the position through a plurality of times of simulation forming analysis;

3. the utility model discloses in the length through setting up subchannel an and subchannel b is the same for two battery covers under the same drawing of patterns time of assurance of the same shaping speed of both sides battery cover can both the shaping target in place, and it is comparatively convenient when both coaxial settings make processing drilling, subchannel an and subchannel c's link corner in addition and sprue b and subchannel d's link corner all sets up the fillet, has guaranteed that the raw materials flows more smoothly and fast, and has avoided producing long-pending material in the corner.

To sum up, the hot runner has the advantages of simple structure, convenience in manufacture, low cost, reliable quality of the formed storage battery and the like, and is particularly suitable for the technical field of injection molding die equipment.

Drawings

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

FIG. 1 is a schematic structural view of a hot runner plastic mold for a battery cover;

FIG. 2 is a schematic front view of a battery cover hot runner plastic mold;

FIG. 3 is a schematic view of a side molding assembly;

FIG. 4 is a schematic structural view of a hot runner system;

FIG. 5 is a cutaway schematic view of a hot runner system;

FIG. 6 is a schematic diagram showing the relative positions of the pump nozzle and the battery cover;

FIG. 7 is a schematic top view of a product of the battery cover;

FIG. 8 is a schematic top view of a hot runner system;

FIG. 9 is a schematic view of the installation position of the hot runner system and the hot runner plate;

fig. 10 is a schematic view showing the installation relationship between the hot runner system and the front mold fixing plate.

Detailed Description

The technical solution in the embodiment of the present invention is clearly and completely described below with reference to the accompanying drawings.

Example one

As shown in fig. 1 to 10, the present embodiment provides a plastic mold for a hot runner of a battery cover, including a front mold fixing plate 10, a hot runner plate 20 fixedly connected to the front mold fixing plate 10, an a mold plate 30 fixedly connected to the hot runner plate 20, a B mold plate 40 matched to the a mold plate 30, a square iron 50 fixedly connected to the B mold plate 40, and a rear mold fixing plate 60 fixedly connected to the square iron 50, wherein an ejector pin base plate 70 is disposed on the rear mold fixing plate 60 between the left and right square irons 50, an ejector pin panel 80 is disposed on the ejector pin base plate 70, a hot runner system 90 is disposed in the hot runner plate 20, the hot runner system 90 includes a splitter plate 1, a main runner pipe 2 is disposed on a surface of the splitter plate 1 facing the front mold fixing plate 10, a sprue a3 and a sprue B4 are disposed on a surface of the splitter plate facing the a mold plate 30, the main runner pipe 2 is communicated with a sprue a3 and a sprue B4, the connecting line between the squirt nozzle a3 and the squirt nozzle b4 is obliquely arranged with the long side of the formed storage battery cover 100, the glue outlet 200 of the squirt nozzle a3 and the squirt nozzle b4 is over against the glue inlet point 101 of the formed storage battery cover 100, and the glue inlet point 101 is arranged at one side of the acid adding port a103 of the storage battery cover 100.

It should be noted that in this embodiment, the hot runner plate is disposed on the mold, and the hot runner system is disposed in the hot runner plate, so that no waste material is generated when the molten plastic directly enters the mold cavity during the molding process of the battery cover, the molding cycle is shortened, the production efficiency is improved, the automatic production degree is improved, the surface smoothness of the product is good, and the mechanical property of the product is improved; in addition, the injection pressure is reduced, and the service life of the mold is prolonged; the multi-cavity mold can ensure uniform filling quality all the time.

Furthermore, an installation groove 201 is formed in the hot runner plate 20, the flow distribution plate 1 is installed in the installation groove 201, the edge of the flow distribution plate 1 and the edge of the hot runner plate 20 are arranged in an inclined manner, and two squirts on the flow distribution plate 1 are arranged diagonally relative to the hot runner plate 20.

Further, the side of the a die plate 30 is provided with a side forming assembly 5 at a position close to the B die plate 40, and the side forming assembly 5 is used for forming a structure of the product perpendicular to the demolding direction.

Further, the side molding assembly 5 includes a fixing plate a51 fixed on the a mold plate 30, an oil cylinder 52 fixed on the fixing plate a51, a slider seat 53 driven by the oil cylinder 52 to move forward and backward, a fixing plate b54 fixed on the slider seat 53, and a slider insert 55 fixed on the fixing plate b 54.

Furthermore, a main flow channel a21 is arranged in the main flow channel pipe 2, a main flow channel b11 communicated with the main flow channel a21, a branch flow channel a12 and a branch flow channel b13 communicated with the main flow channel b11 are arranged in the flow distribution plate 1, a branch flow channel c31 communicated with the branch flow channel a12 is arranged in the sprue a3, and a branch flow channel d32 communicated with the branch flow channel b13 is arranged in the sprue b 4.

Further, the glue inlet 101 is disposed in the cover plate groove 102 on the side of the acid adding port a103 and near the middle of the battery cover 100.

The hot runner in this mould that needs to point out simple structure, the preparation is convenient with low costs, its left and right sides runner symmetry sets up and guarantees that one goes out two fashioned accumulator lid qualities and can both obtain guaranteeing, it sets up through setting up the limit that line between two sprue spouts becomes the slope with the accumulator lid in addition, make when guaranteeing that the main runner pipe aims at the positive intermediate position of die cavity, enable sprue spout an and sprue spout b aim at the accumulator lid respectively and lie in the gluey point of advancing that the recess is gone up, and through many times of simulation modeling analysis obtain advance gluey point set up when this position shaping accumulator lid warpage deformation volume is few, glue thickness distributes most evenly.

Further, the main runner pipe 2 is provided at a position right in the middle of the flow distribution plate 1; the end of the main runner pipe 2 is provided with a positioning sleeve 22.

Further, a hot runner junction box 6 is further disposed on a side of the hot runner plate 20, the hot runner junction box 6 is used to cooperate with an external temperature control box to control the temperature of each position of the hot runner system 90, and the temperature control box is not shown in the drawings of the specification as a conventional technical means, and is not described herein in detail.

Furthermore, the main runner pipe 2, the squirt nozzle a3 and the squirt nozzle b4 are detachably and hermetically connected with the splitter plate 1.

Furthermore, heating elements are arranged on the peripheries of the flow distribution plate 1, the squirt nozzle a3 and the squirt nozzle b 4.

Furthermore, the distance between the glue inlet point and the acid adding port in the middle of the storage battery cover is L, and L is 16 mm.

Example two

As shown in fig. 5, in which the same or corresponding components as in the first embodiment are denoted by the same reference numerals as in the first embodiment, only the points of difference from the first embodiment will be described below for the sake of convenience. The second embodiment is different from the first embodiment in that: the branch passages a12 and b13 are symmetrically arranged on two sides of the main flow passage b 11.

In this embodiment, through setting up subchannel an and subchannel b's length the same for two battery cover can both the shaping target in place under the same drawing of patterns time of the same assurance of the shaping speed of both sides battery cover, and it is comparatively convenient when both coaxial settings make processing drilling.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A hot runner plastic mold for a battery cover, comprising a front mold fixing plate (10), a hot runner plate (20) fixedly connected to the front mold fixing plate (10), and an A template fixedly connected to the hot runner plate (20) (30), the B formwork (40) matched with the A formwork (30), the square iron (50) fixedly connected with the B formwork (40), and the rear formwork fixing plate (60) fixedly connected with the square iron (50), The rear mold fixing plate (60) is provided with a thimble bottom plate (70) between the left and right square irons (50), and a thimble bottom plate (80) is provided on the thimble bottom plate (70), and is characterized in that: The hot runner plate (20) is provided with a hot runner system (90), the hot runner system (90) includes a distribution plate (1), and the distribution plate (1) faces the front mold fixing plate (10) on one side A main channel pipe (2) is provided, and the side facing the A template (30) is provided with a nozzle a (3) and a nozzle b (4), the main channel pipe (2) and the nozzle a (3) and the nozzle b(4) is communicated and arranged, the connecting line between the nozzle a(3) and the nozzle b(4) and the long side of the formed battery cover (100) are arranged obliquely. The glue outlet (200) of the nozzle a (3) and the nozzle b (4) is facing the glue inlet point (101) of the formed battery cover (100), and the glue inlet point (101) is arranged on the battery cover (100). ) on the side of the acid addition port a(103).

2. A battery cover hot runner plastic mold according to claim 1, characterized in that: the side edge of the A template (30) is provided with a side molding component (5) at a position close to the B template (40). ), the side forming component (5) is used for forming the structure of the product perpendicular to the demolding direction.

3. The hot runner plastic mold for a battery cover according to claim 2, wherein the side molding assembly (5) comprises a fixing plate a (51) fixed on the A template (30), The oil cylinder (52) on the fixed plate a (51), the slider seat (53) that advances and retreats under the driving of the oil cylinder (52), the fixed plate b (54) fixed on the slider seat (53), and the fixed plate Slider insert (55) on b(54).

4. A hot runner plastic mold for a battery cover according to claim 1, characterized in that: the hot runner plate (20) is provided with a mounting groove (201), and the manifold (1) is mounted in the mounting groove (201), and the side of the distribution plate (1) and the side of the hot runner plate (20) are inclined.

5 . The hot runner plastic mold for a battery cover according to claim 1 , wherein a main channel a ( 21 ) is opened in the main channel pipe ( 2 ), and a main channel a ( 21 ) is opened in the distribution plate ( 1 ). 6 . The main channel b(11) communicated with the main channel a(21) and the branch channel a(12) and the branch channel b(13) communicated with the main channel b(11), the nozzle a(3) is provided with A branch channel c (31) communicated with the branch channel a (12), and a branch channel d (32) communicated with the branch channel b (13) is opened in the nozzle b (4).

6 . The hot runner plastic mold for a battery cover according to claim 1 , wherein the glue feeding point ( 101 ) is arranged in the cover slot ( 102 ) on the side of the acid addition port a ( 103 ), 6 . And it is close to the middle position of the battery cover (100).

7 . The hot runner plastic mold for a battery cover according to claim 5 , wherein the branch channel a ( 12 ) and the branch channel b ( 13 ) are symmetrically arranged on both sides of the main channel b ( 11 ). 8 .

8 . The hot runner plastic mold for a battery cover according to claim 1 , wherein the main duct (2) is arranged at the center of the manifold (1); the main duct (2) ) is provided with a positioning sleeve (22).

9. The hot runner plastic mold for a battery cover according to claim 1, wherein a hot runner junction box (6) is also provided on the side of the hot runner plate (20), and the hot runner junction box ( 6) It is used to cooperate with an external temperature control box to control the temperature of each position of the hot runner system (90).