阅读说明：本技术 电池箱上盖成型模具 (Battery box cover molding die ) 是由 董晓阳 曹正宁 唐昌伟 龚建峰 于 2019-09-23 设计创作，主要内容包括：本发明提供一种电池箱上盖成型模具,其包括：阴模,其具有型腔；阳模,其与所述阴模形成合模关系,所述阳模上具有加热体,所述阴模和阳模合模时,所述加热体收容于所述型腔中；衬套,其具有实现电池箱上盖成型的成型面,所述衬套于所述阴模和阳模合模时,装配于所述阳模的加热体上,并与所述型腔共同限定电池箱上盖的成型空间。本发明的电池箱上盖成型模具通过设置衬套辅助产品模压成型,其具有如下技术效果：1)、缩短了对模具的热处理时间,降低了成本；2)、有利于实现减重,降低了对设备承载力的要求；3)、根据产品的尺寸,对其自身热膨胀收缩量进行设计,从而有利于保证产品成型的尺寸。(The present invention provides a kind of battery box cover molding die comprising: former, with type chamber；Formpiston forms molding relationship with the former, has calandria on the formpiston, when the former and formpiston mold, the calandria is contained in the type chamber；Bushing has and realizes the molding forming surface of battery box cover, and the bushing is assemblied on the calandria of the formpiston, and limit the molding space of battery box cover jointly with the type chamber when former and formpiston mold.Battery box cover molding die of the invention assists product compression molding by setting bushing, have the following technical effect that 1), shorten heat treatment time to mold, reduce costs；2) it, is advantageously implemented loss of weight, reduces the requirement to equipment bearing capacity；3), according to the size of product, its own thermal expansion shrinkage is designed, to advantageously ensure that the size of formed product.)

1. a kind of battery box cover molding die, which is characterized in that the battery box cover molding die includes:

Former, with type chamber；

Formpiston forms molding relationship with the former, has calandria on the formpiston, when the former and formpiston mold, The calandria is contained in the type chamber；

Bushing has and realizes the molding forming surface of battery box cover, and the bushing is when the former and formpiston mold, assembly In on the calandria of the formpiston, and the molding space of battery box cover is limited with the type chamber jointly.

2. battery box cover molding die according to claim 1, which is characterized in that be additionally provided on the former according to The positioning guide column of direction setting is molded, is correspondingly arranged on location hole on the formpiston.

3. battery box cover molding die according to claim 1, which is characterized in that be additionally provided with air blowing on the former Hole oil cylinder.

4. battery box cover molding die according to claim 1, which is characterized in that be disposed with heating inside the formpiston Oil pipe.

5. battery box cover molding die according to claim 4, which is characterized in that the former is internally provided with heating Oil pipe.

6. battery box cover molding die according to claim 1, which is characterized in that the size of the bushing single direction L_rMeet following formula:

L_r=L (1- Δ L/L)；

Wherein, Δ L is shrinkage, and L is the size of battery box cover single direction；T_gFor battery box cover solidification temperature；T₀For room Temperature,For bushing thermal expansion coefficient；For battery box cover thermal expansion coefficient.

7. battery box cover molding die according to claim 1, which is characterized in that the bushing is assemblied in the formpiston On be additionally provided with reinforcing rib on one side.

8. battery box cover molding die according to claim 7, which is characterized in that the calandria be it is multiple, it is multiple The escape groove that the reinforcing rib is correspondingly arranged is formed between calandria.

9. battery box cover molding die according to claim 1, which is characterized in that the two sides of the formpiston are additionally provided with Ejection cylinder.

10. battery box cover molding die according to claim 1, which is characterized in that the battery box cover shaping mould Tool further include:

Upper cover plate and upper keel, the upper cover plate are fixed on the former by the upper keel；

Lower bolster and lower keel, the lower bolster are installed on the formpiston by the lower keel.

Technical field

The present invention relates to battery box cover field shaping techniques, more particularly to one kind to be suitable for the molding mould of battery box cover Tool.

Background technique

Core technology of the new energy battery pack as New-energy electric vehicle is to restrict New-energy electric vehicle development and push away Wide key, and battery box cover is the important feature of battery pack.Currently, in battery box cover production process, it is mainly logical Cross the mode of compression molding.However, existing battery box cover molding die, needs to carry out longer heat treatment, and then extend The period of production, meanwhile, existing battery box cover molding die heavier-weight, when needing to form product of different shapes When, need the biggish Manipulator Transportation replacement formpiston of bearing capacity, the high requirements on the equipment.Therefore, in view of the above-mentioned problems, it is necessary to It is proposed further solution.

Summary of the invention

The present invention is intended to provide a kind of battery box cover molding die, to overcome the deficiencies in the prior art.

In order to solve the above technical problems, the technical scheme is that

A kind of battery box cover molding die comprising:

Former, with type chamber；

Formpiston forms molding relationship with the former, has calandria, the former and formpiston molding on the formpiston When, the calandria is contained in the type chamber；

Bushing has and realizes the molding forming surface of battery box cover, the bushing when former and formpiston mold, It is assemblied on the calandria of the formpiston, and limits the molding space of battery box cover jointly with the type chamber.

As the improvement of battery box cover molding die of the invention, it is additionally provided on the former and is set according to molding direction The positioning guide column set is correspondingly arranged on location hole on the formpiston.

As the improvement of battery box cover molding die of the invention, gas hole oil cylinder is additionally provided on the former.

As the improvement of battery box cover molding die of the invention, heating oil pipe is disposed with inside the formpiston.

As the improvement of battery box cover molding die of the invention, the former is internally provided with heating oil pipe.

As the improvement of battery box cover molding die of the invention, the size L of the bushing single direction_rMeet as follows Formula:

L_r=L (1- Δ L/L)；

Wherein, Δ L is shrinkage, and L is the size of battery box cover single direction；T_gFor battery box cover solidification temperature；T₀ For room temperature,For bushing thermal expansion coefficient；For battery box cover thermal expansion coefficient.

As the improvement of battery box cover molding die of the invention, the bushing is assemblied in the one side on the formpiston also It is provided with reinforcing rib.

As the improvement of battery box cover molding die of the invention, the calandria be it is multiple, between multiple calandrias It is formed with the escape groove that the reinforcing rib is correspondingly arranged.

As the improvement of battery box cover molding die of the invention, the two sides of the formpiston are additionally provided with ejection cylinder.

As the improvement of battery box cover molding die of the invention, the battery box cover molding die further include:

Upper cover plate and upper keel, the upper cover plate are fixed on the former by the upper keel；

Lower bolster and lower keel, the lower bolster are installed on the formpiston by the lower keel.

Compared with prior art, the beneficial effects of the present invention are: battery box cover molding die of the invention passes through setting Bushing assists product compression molding, has the following technical effect that

1) heat treatment time to mold, is shortened, is reduced costs；

2) it, is advantageously implemented loss of weight, reduces the requirement to equipment bearing capacity；

3), according to the size of product, its own thermal expansion shrinkage is designed, to advantageously ensure that formed product Size.

Detailed description of the invention

In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this The some embodiments recorded in invention, for those of ordinary skill in the art, without creative efforts, It is also possible to obtain other drawings based on these drawings.

Fig. 1 is the perspective exploded view of one embodiment of battery box cover molding die of the invention；

Fig. 2 is the three-dimensional enlarged diagram of bushing in battery box cover molding die of the invention；

Fig. 3 is the three-dimensional enlarged diagram of formpiston in battery box cover molding die of the invention.

Specific embodiment

Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.

As shown in Figure 1-3, battery box cover molding die of the invention includes: former 1, formpiston 2, bushing 3, positioning guide column 4, ejection cylinder 5, gas hole cylinder 6, oil circuit interface 7, upper cover plate 8, lower bolster 9, upper keel 10, lower keel 11, reinforcement Muscle 12, escape groove 13.

The former 1 and formpiston 2 form molding relationship, and in use process, former 1 is usually located at top, under formpiston 2 is located at Side.When molding, 1 downlink of former is matched with the formpiston 2 of lower section.

The former 1 has a type chamber, molding of the type chamber for battery box cover upper surface and side, shape also with to The shape of molding battery box cover is corresponding.

In order to facilitate the molding between former 1 and formpiston 2, it is additionally provided on the former 1 according to the setting of molding direction Positioning guide column 4 is correspondingly arranged on location hole on the formpiston 2.When molding, is stretched in location hole in positioning guide column 4, play and lead To effect, convenient for the smooth molding of the two.In one embodiment, the positioning guide column 4 is distributed in the quadrangle of the former 1 Position.

It is additionally provided with gas hole oil cylinder on the former 1, this blows afloat the middle position that hole oil cylinder is set to the former 1.

The formpiston 2 forms molding relationship with the former 1.It is hot-forming in order to realize, there is heating on the formpiston 2 When body, the former 1 and formpiston 2 mold, the calandria is contained in the type chamber.The reality of calandria fever is realized at one It applies in mode, heating oil pipe has been evenly arranged inside the formpiston 2, the connector of any heating oil pipe is exposed at the side wall of formpiston 2 On.To by heat transfer process, realize the fever of calandria when being passed through heating agent from exposed connector.

According to the arrangement of above-mentioned heating oil pipe, it can also be evenly arranged heating oil pipe inside the former 1, to close When mould, former 1 and formpiston 2 can be heated together.

The bushing 3 is the critical component in battery box cover molding die of the invention.Its role is to: realize loss of weight Design, it is lower to equipment requirement；Shorten the heat treatment time to mold, shortens the production cycle, reduce cost；Guarantee product at Molded dimension.

Specifically, the bushing 3, which has, realizes the molding forming surface of battery box cover, and the bushing 3 is in 1 He of former It when formpiston 2 molds, is assemblied on the calandria of the formpiston 2, and limits the molding sky of battery box cover jointly with the type chamber Between.At this point, the bushing 3 can realize the molding of battery box cover lower surface.

Since existing mold needs monolith to process, weight weight needs enough when mould pressing process needs to replace formpiston 2 The manipulator of bearing capacity.And in the present invention, by the way that bushing 3 is arranged, the molding of battery box cover lower surface is by its realization. So, it is only necessary to replace bushing 3 that is, and the weight of bushing 3 be it is lighter, so reduce the requirement for equipment.

In order to improve the intensity of bushing 3 and prevent from deforming, the bushing 3 is assemblied in also setting up on the formpiston 2 on one side There is reinforcing rib 12.Correspondingly, the calandria be it is multiple, be formed with what the reinforcing rib 12 was correspondingly arranged between multiple calandrias Escape groove 13.Meanwhile by setting reinforcing rib 12 and escape groove 13, the contact area between bushing 3 and formpiston 2 is also increased, It is advantageously implemented quick heating.In one embodiment, 12 height of reinforcing rib is 15mm, width 5mm；Correspondingly, keeping away Allow the width of slot 13 for 6mm, groove depth 16mm.

Since existing mold is in forming process, need to carry out former 1 and formpiston 2 rapid heat cycle processing to cope with Efficient productive temp, rapid heat cycle need quickly to have heating or cooling to matched molds 2 in a short time using heat medium. And in the present invention, the wall thickness of mold heat transfer is significantly reduced by the way that bushing 3 is arranged, it is only necessary in clamping process, pass through sun Mould 2 heats bushing 3, shortens heating time, without reducing energy consumption to former 1, the progress rapid heat cycle of formpiston 2, Shorten product clamping cycle, improves the utilization rate of mold, reduce costs, shorten heat treatment time.

Since bushing 3 can occur to be heat-shrinked phenomenon, when deflated, the product of final molding during heat treatment Size will also receive influence, therefore the size of bushing 3 should compensate the influence for being heat-shrinked and generating, to guarantee the molding ruler of product It is very little.Specifically, the size L of 3 single direction of bushing_rMeet following formula:

L_r=L (1- Δ L/L)；

Wherein, Δ L is shrinkage, and L is the size of battery box cover single direction；T_gFor battery box cover solidification temperature；T₀ For room temperature,For 3 thermal expansion coefficient of bushing；For battery box cover thermal expansion coefficient.

In this way, passing through determining above-mentioned L_rThe size for designing bushing 3, is allowed to after being heat-shrinked, the molding of product is free Still within the range of permission.Wherein, above-mentioned L_rFor the size of 3 single direction of bushing, can by repeatedly calculate determine its length, Wide, high specific value.

In order to facilitate the demoulding after molding, the two sides of the formpiston 2 are additionally provided with ejection cylinder 5, which can It is set up directly on the side wall of formpiston 2, may also be arranged on the backing plate of 2 bottom of formpiston.

The battery box cover molding die further include: upper cover plate 8, upper keel 10, lower bolster 9, lower keel 11.Its In, the upper cover plate 8 is fixed on the former 1 by the upper keel 10；The lower bolster 9 passes through the lower keel 11 are installed on the formpiston 2.

In conclusion battery box cover molding die of the invention assists product compression molding, tool by setting bushing There is following technical effect: 1), shortening heat treatment time to mold, reduce costs；2) it, is advantageously implemented loss of weight, is reduced Requirement to equipment bearing capacity；3), according to the size of product, its own thermal expansion shrinkage is designed, thus favorably In the size for guaranteeing formed product.

It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.

In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art The other embodiments being understood that.