CN210362278U

CN210362278U - Battery middle cover hot runner mold

Info

Publication number: CN210362278U
Application number: CN201921022686.9U
Authority: CN
Inventors: 缪琦亮
Original assignee: Younaifu Changxing Automation Equipment Co ltd
Current assignee: Beizheng (Shandong) Industrial Investment Group Co.,Ltd.
Priority date: 2019-07-03
Filing date: 2019-07-03
Publication date: 2020-04-21
Anticipated expiration: 2029-07-03

Abstract

The utility model relates to a battery middle cover hot runner mold; including the front mould fixed plate, with front mould fixed plate fixed connection's cope match-plate pattern, with cope match-plate pattern complex lower bolster, with lower bolster fixed connection's square iron and with square iron fixed connection's back mould fixed plate, be provided with thimble bottom plate about on the back mould fixed plate between two square irons, be provided with thimble panel on the thimble bottom plate, still include hot runner system, hot runner system includes hot runner sprue bushing, the play jiao kou of hot runner sprue bushing corresponds the gluey point of advancing of fashioned battery lid, it is located between two acidification mouths in the middle of the battery lid to advance gluey point, it is high to have overcome hot runner mold structure complicacy, among the forming process product deflection is big, the shaping is not to the position and the unstable problem of side shaping structure.

Description

Battery middle cover hot runner mold

Technical Field

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

Background

The storage battery industry develops rapidly, the production demand of a shell matched with the storage battery is large, the storage battery relates to the forming of a side structure in the forming process, and in addition, the existing storage battery shell production mold is generally a cold runner mold and has the following problems: 1: after the cold material channel mold is opened, waste material 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.

The utility model discloses a chinese utility model patent that the bulletin number is CN207207012U, it discloses an injection mold of battery cover, including cover half and movable mould, the movable mould upper end is provided with the core board, is fixed in core, the horizontal direction on the core board and slides and set up on the core board and be located the side shaping board of core both sides, and it realizes loosing core earlier, the ejecting drawing of patterns of back time delay, can not interfere between the two moreover, has the effect that is the injection molding rapid prototyping.

However, it has the following problems: firstly, the side forming structure of the die is simple in arrangement, the forming stability is poor, and the die is easy to deviate after long-term use; in addition, the mould does not have a hot runner system, and the formed product has the problems of large warpage and poor forming.

SUMMERY OF THE UTILITY MODEL

The utility model aims at prior art's weak point, a lid hot runner mold in battery is provided, through set up the hot runner board on the mould, set up hot runner system in the hot runner board, and the play jiao kou that sets up hot runner system just carries out the injecting glue to the positive central point of accumulator lid, set up oblique guide pillar and guide way cooperation in side shaping subassembly department in addition, and then overcome the hot runner mold structure complicacy with high costs, product warpage volume is big in the forming process, the shaping is not to the problem of position and side shaping structure instability.

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

the utility model provides a lid hot runner mold in battery, includes the front mould fixed plate, with front mould fixed plate fixed connection's cope match-plate pattern, with cope match-plate pattern complex lower bolster, with lower bolster fixed connection's square iron and with square iron fixed connection's back mould fixed plate, be provided with thimble bottom plate between two square irons about on the back mould fixed plate, be provided with thimble panel on the thimble bottom plate, still include hot runner system, hot runner system includes hot runner purlin mouth, hot runner purlin mouth's play gum mouth corresponds fashioned accumulator cover's the point of advancing, it is located between two acidification mouths in the middle of the accumulator cover to advance the point of gluing.

Preferably, the hot runner sprue bushing is mounted on the front mold fixing plate.

Preferably, the glue inlet point is positioned at the right middle position between the two acid adding ports in the middle and is positioned in the cover plate groove of the storage battery cover.

Preferably, the front mold fixing plate is provided with a positioning ring, the hot runner sprue bushing is attached to the positioning ring, a runner is formed in the hot runner sprue bushing, and the positioning ring is provided with a feed chute communicated with the runner.

Preferably, side forming assemblies are arranged on the side edges of the upper template and the lower template and used for forming the structure of the storage battery cover perpendicular to the demolding direction.

Preferably, the side forming assembly comprises a slider seat fixed on the lower template, a slider insert arranged on the slider seat, a fixed block fixed on the upper template, an inclined guide post fixed on the fixed block and a shovel machine fixed on the upper template, the slider seat is provided with a guide groove matched with the inclined guide post, and a slider back plate is arranged on the surface of the slider seat matched with the shovel machine.

Preferably, the slider insert and the slider seat are detachably connected through a key groove clamping manner.

Preferably, the end of the inclined guide post is provided with a hemisphere shape.

Preferably, the hot runner system further comprises a hot runner junction box fixed on the side of the front mold fixing plate, and the hot runner junction box is used for controlling the temperature of each position of the hot runner system in cooperation with an external temperature control box.

It should be noted that the hot runner plastic mold is suitable for use with battery covers of models 70-80AH and 100 AH;

when the battery cover is subjected to injection molding at 70-80AH, setting the temperature of injected molten plastic at 220 ℃ and the injection pressure at 90MPa, adopting sectional injection for 4s, and maintaining the pressure after the injection molding is finished at 65MPa for 3 s; stopping feeding the rubber after the injection and pressure maintaining are finished, starting cooling for 15s, and opening the mold to take out the part after cooling;

when the 100AH 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 120MPa, 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 85MPa and the pressure maintaining time is 4 s; and stopping feeding the rubber after the injection and pressure maintaining are finished, starting cooling for 30s, 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 glue inlet point is arranged at the positive center of the accumulator cover, and the position is tested by multiple forming, the formed accumulator cover has less warpage and deformation and the glue thickness is distributed most evenly;

in conclusion, the hot runner has the advantages of simple structure, 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 mold for a center lid of a battery;

FIG. 2 is a schematic view of a side molding assembly;

FIG. 3 is a schematic top view of the side molding assembly in positional relationship with the battery cover;

FIG. 4 is a cut-away schematic view of the side forming assembly;

FIG. 5 is a schematic block diagram of a hot runner system;

FIG. 6 is a cutaway schematic view of a hot runner system.

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 6, the embodiment provides a hot runner mold for a middle cover of a battery, which includes a front mold fixing plate 10, an upper mold plate 30 fixedly connected to the front mold fixing plate 10, a lower mold plate 40 matched to the upper mold plate 30, square irons 50 fixedly connected to the lower mold plate 40, and a rear mold fixing plate 60 fixedly connected to the square irons 50, wherein an ejector pin base plate 70 is disposed between the left square iron 50 and the right square iron 50 on the rear mold fixing plate 60, an ejector pin plate 80 is disposed on the ejector pin base plate 70, and the hot runner system 1 further includes a hot runner system 1, the hot runner system 1 includes a hot runner sprue 11, a glue outlet 111 of the hot runner sprue 11 corresponds to a glue inlet 101 of a battery cover 100, and the glue inlet 101 is located between two acid adding ports 102 in the middle of the battery cover 100.

It is worth mentioning that the hot runner plate is arranged on the mold, and the hot runner system is arranged in the hot runner plate, so that the molten plastic directly enters the mold cavity without generating waste materials in the storage battery cover molding process, 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.

Further, the hot runner sprue 11 is mounted on the front mold fixing plate 10.

Further, the glue inlet point 101 is located at the right middle position between the two acid adding ports 102 in the middle and is located in the cover sheet groove of the storage battery cover 100.

Furthermore, a positioning ring 2 is arranged on the front mold fixing plate 10, the hot runner sprue bushing 11 is attached to the positioning ring 2, a flow passage 112 is formed in the hot runner sprue bushing 11, and a feeding groove 21 communicated with the flow passage 112 is formed in the positioning ring 2.

The hot runner is simple in structure, convenient to manufacture and low in cost, the glue inlet point is arranged at the positive center of the storage battery cover, and the position is provided with a small amount of warping deformation of the formed storage battery cover and the glue thickness is distributed most uniformly after multiple forming tests.

Furthermore, the hot runner system 1 further comprises a hot runner junction box 4 fixed on the side of the front mold fixing plate 10, and the hot runner junction box 4 is used for controlling the temperature of each position of the hot runner system 1 in cooperation with an external temperature control box.

Example two

As shown in fig. 3 and 4, 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: further, side forming assemblies 3 are arranged on the side edges of the upper template 30 and the lower template 40, and the side forming assemblies 3 are used for forming the structure of the battery cover 100 perpendicular to the demolding direction.

Further, the side forming assembly 3 includes a slider seat 31 fixed on the lower die plate 40, a slider insert 32 disposed on the slider seat 31, a fixed block 33 fixed on the upper die plate 30, an inclined guide post 34 fixed on the fixed block 33, and a shovel 35 fixed on the upper die plate 30, a guide groove 311 engaged with the inclined guide post 34 is formed on the slider seat 31, and a slider back plate 36 is disposed on a surface of the slider seat 31 engaged with the shovel 35.

Further, the slider insert 32 and the slider seat 31 are detachably connected through a key slot.

Further, the end of the angle guide post 34 is provided with a hemispherical shape.

In this embodiment, this side forming subassembly 3 sets up simple structure, and the cost of manufacture is low to the setting of oblique guide pillar 34 makes the in-process operation at the mould that opens and shuts more stable, and the accuracy is high.

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 battery middle cover hot runner mold comprises a front mold fixing plate (10), an upper mold plate (30) fixedly connected with the front mold fixing plate (10), a lower mold plate (40) matched with the upper mold plate (30), square iron (50) fixedly connected with the lower mold plate (40) and a rear mold fixing plate (60) fixedly connected with the square iron (50), a thimble base plate (70) is arranged between the left square iron (50) and the right square iron (50) on the rear die fixing plate (60), a thimble panel (80) is arranged on the thimble base plate (70), characterized in that the hot runner system (1) is also included, the hot runner system (1) comprises a hot runner sprue bushing (11), a glue outlet (111) of the hot runner sprue bushing (11) corresponds to a glue inlet point (101) of a storage battery cover (100), the glue inlet point (101) is positioned between two acid adding ports (102) in the middle of the storage battery cover (100).

2. The battery middle cover hot runner mold as claimed in claim 1, wherein: the hot runner sprue bushing (11) is arranged on the front mold fixing plate (10).

3. The battery middle cover hot runner mold as claimed in claim 1, wherein: the glue inlet point (101) is positioned at the right middle position between the two acid adding ports (102) in the middle and is positioned in a cover plate groove of the storage battery cover (100).

4. The battery middle cover hot runner mold as claimed in claim 1, wherein: the hot runner sprue bushing is characterized in that a positioning ring (2) is arranged on the front die fixing plate (10), the hot runner sprue bushing (11) is attached to the positioning ring (2), a runner (112) is formed in the hot runner sprue bushing (11), and a feeding groove (21) communicated with the runner (112) is formed in the positioning ring (2).

5. The battery middle cover hot runner mold as claimed in claim 1, wherein: the side edges of the upper template (30) and the lower template (40) are provided with side forming assemblies (3), and the side forming assemblies (3) are used for forming structures, perpendicular to the demolding direction, of the storage battery cover (100).

6. The lid-in-cell hot runner mold of claim 5, wherein: the side forming assembly (3) comprises a sliding block seat (31) fixed on a lower template (40), a sliding block insert (32) arranged on the sliding block seat (31), a fixing block (33) fixed on an upper template (30), an inclined guide post (34) fixed on the fixing block (33) and a shovel machine (35) fixed on the upper template (30), wherein a guide groove (311) matched with the inclined guide post (34) is formed in the sliding block seat (31), and a sliding block back plate (36) is arranged on the surface of the sliding block seat (31) matched with the shovel machine (35).

7. The battery middle cover hot runner mold as claimed in claim 6, wherein: the slider insert (32) and the slider seat (31) are detachably connected in a key groove clamping manner.

8. The battery middle cover hot runner mold as claimed in claim 6, wherein: the end part of the inclined guide post (34) is provided with a hemisphere shape.

9. The battery middle cover hot runner mold as claimed in claim 1, wherein: the hot runner system (1) further comprises a hot runner junction box (4) fixed on the side edge of the front mold fixing plate (10), and the hot runner junction box (4) is used for being matched with an external temperature control box to control the temperature of each position of the hot runner system (1).