CN216544346U

CN216544346U - Double-sided encapsulation die for hydrogen fuel cell sheet

Info

Publication number: CN216544346U
Application number: CN202122575441.2U
Authority: CN
Inventors: 廖海燕; 廖颖慧; 钟培文; 黄开颜
Original assignee: Zhongshan Gaoyuan Precision Technology Co ltd
Current assignee: Zhongshan Gaoyuan Precision Technology Co ltd
Priority date: 2021-10-25
Filing date: 2021-10-25
Publication date: 2022-05-17
Anticipated expiration: 2031-10-25

Abstract

The utility model discloses a die for double-sided encapsulation of a sheet of a hydrogen fuel cell. A double-sided encapsulated sheet die for a hydrogen fuel cell comprises a first die, a second die and a third die. The first section die is provided with a first cavity and a first flow passage communicated with the first cavity; the second mould is provided with a sheet placing station; the third mould is provided with a second cavity and a second runner communicated with the second cavity; the first section mould is used for being matched with the second section mould and the third section mould respectively. The double-sided encapsulated sheet material produced by the double-sided encapsulated sheet material die of the hydrogen fuel cell with the structure has better quality and lower cost.

Description

Double-sided encapsulation die for hydrogen fuel cell sheet

Technical Field

The utility model relates to the field of sheet processing, in particular to a double-sided encapsulated sheet die for a hydrogen fuel cell.

Background

The fuel cell is formed by stacking a plurality of single battery packs, each single battery comprises an upper polar plate, a lower polar plate and a membrane electrode assembly clamped between the upper polar plate and the lower polar plate, and a double-sided encapsulated sheet is required in the production process. In the prior art, a first section die and a movable die are both provided with an injection runner and a cavity, and the first section die and the movable die are matched to clamp a sheet and perform injection molding on two sides simultaneously. In another prior art, an injection runner and a cavity are usually opened in a first die, the first die and a movable die clamp a sheet and inject one side of the sheet, then the die is opened and the sheet is turned over, and the first die and the movable die are closed and inject the other side of the sheet. However, the double-sided rubber-coated sheet produced by the method has the disadvantages of high rejection rate and high cost due to dislocation of the shape caused by repeated turning positioning.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve at least one technical problem in the prior art and provides a double-sided encapsulated sheet die for a hydrogen fuel cell, wherein the produced double-sided encapsulated sheet has better quality and lower cost.

A sheet double-sided encapsulation mold for a hydrogen fuel cell according to an embodiment of the present invention includes: a first mould, a second mould and a third mould. The first section die is provided with a first cavity and a first flow passage communicated with the first cavity; the second mould is provided with a sheet placing station; the third mould is provided with a second cavity and a second runner communicated with the second cavity; the first section die is used for being matched with the second section die and the third section die respectively.

The double-sided encapsulated sheet die for the hydrogen fuel cell provided by the embodiment of the utility model has at least the following beneficial effects: placing a sheet material on a second mould, and then closing the first mould and the second mould and injecting the sheet material on one side through a first runner; and then the first die is separated from the second die, the sheet is adhered to the first die by injection molding positioned on one side of the first die, then the first die and the third die are closed and injection molding is carried out on the other side of the sheet through a second runner, and then the die is opened to obtain the double-sided encapsulated sheet. The double-sided encapsulated sheet material produced by the double-sided encapsulated sheet material die for the hydrogen fuel cell with the structure has better quality and lower cost.

According to some embodiments of the utility model, after the first die and the third die are closed, the first cavity and the second cavity are symmetrically arranged.

According to some embodiments of the utility model, the second die is provided with a positioning structure for positioning the sheet.

According to some embodiments of the utility model, the positioning structures are configured as at least two positioning pillars, and the first mold is provided with corresponding accommodating holes for accommodating the positioning pillars.

According to some embodiments of the utility model, at least two of the positioning posts have different diameters.

According to some embodiments of the utility model, the first mould is provided with first fixing means for fixing the sheet to the first mould.

According to some embodiments of the utility model, the first fixture is configured as a first adsorption device.

According to some embodiments of the utility model, the third mould is provided with second fixing means for fixing the sheet to the third mould.

According to some embodiments of the utility model, the second fixture is configured as a second adsorption device.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The utility model is further described below with reference to the accompanying drawings and examples;

fig. 1 is a schematic perspective view of a first mold according to an embodiment of the present invention;

FIG. 2 is a schematic perspective view of a second mold in accordance with an embodiment of the utility model;

fig. 3 is a schematic perspective view of a third mold according to an embodiment of the present invention;

fig. 4 is a flow chart of a process for producing double-sided encapsulated sheets according to an embodiment of the present invention.

Reference numerals:

a first mold 100, a first cavity 110, a first flow passage 120, a first suction means 130, a receiving hole 140;

a second mold 200, a positioning post 210;

a third mold 300, a second cavity 310, a second flow channel 320, and a second adsorption device 330.

Detailed Description

Reference will now be made in detail to the present embodiments of the present invention, preferred embodiments of which are illustrated in the accompanying drawings, wherein the drawings are provided for the purpose of visually supplementing the description in the specification and so forth, and which are not intended to limit the scope of the utility model.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.

Referring to fig. 1 to 3, a mold for double-sided encapsulation of a sheet for a hydrogen fuel cell of the present embodiment includes: a first mold 100, a second mold 200 and a third mold 300. The first mold 100 is provided with a first cavity 110 and a first flow passage 120 communicating with the first cavity 110; the second mold 200 is provided with a sheet placing station; the third mold 300 is provided with a second cavity 310 and a second flow path 320 communicating with the second cavity 310; wherein the first mold 100 is adapted to be clamped to the second mold 200 and the third mold 300, respectively. By placing the sheet material on the second die 200, and then the first die 100 is closed with the second die 200 and injection-molded on one side of the sheet material through the first runner 120; the first die 100 is then separated from the second die 200, the sheet is adhered to the first die 100 by injection molding on one side of the first die 100, and then the first die 100 and the third die 300 are closed and injection molded on the other side of the sheet through the second runner 320, and then the dies are opened to obtain a double-sided encapsulated sheet. The double-sided encapsulated sheet material produced by the double-sided encapsulated sheet material die for the hydrogen fuel cell with the structure has better quality and lower cost.

Referring to fig. 1 to 3, in the present embodiment, after the first mold 100 and the third mold 300 are clamped, the first cavity 110 and the second cavity 310 are symmetrically disposed. The mould with the structure has better quality when producing the double-sided rubber-coated sheet with symmetrical double-sided injection molding. Alternatively, in other embodiments, the first cavity 110 and the second cavity 310 may be asymmetrically disposed.

Referring to fig. 1 to 3, in the present embodiment, the second mold 200 is provided with a positioning structure for positioning a sheet. The positioning structure is arranged, so that the sheet can be placed accurately, and the accuracy of the injection molding position is improved.

Referring to fig. 1 to 3, in the present embodiment, the positioning structures are configured as four positioning pillars 210, and the first mold 100 is provided with corresponding receiving holes 140 for receiving the positioning pillars 210. The positioning column 210 is used for positioning the sheet, so that the structure is simple and the implementation is easy. In this embodiment, the sheet material can be pre-processed with the through holes corresponding to the positioning posts 210, and then the sheet material can be placed in the second mold 200 for accurate positioning. Alternatively, the number of the positioning pillars 210 may be two, three, or more than four. Optionally, in other embodiments, the positioning structure may also be a groove made according to the shape of the sheet, and the sheet is positioned by the groove; the positioning of the sheet material can also be realized by shaping certain grooves or inner holes and the like in the sheet material.

Referring to fig. 1 to 3, in the present embodiment, two positioning pillars 210 have different diameters. Through setting up the reference column 210 of two kinds of diameters simultaneously, the sheet is conveniently placed to the accuracy to the physics is prevented slow-witted. In this embodiment, the four positioning posts 210 are divided into two diameters. Optionally, the diameters of the positioning pillars 210 may also be divided into more than two kinds, and the number of the positioning pillars 210 is not more than the maximum.

Referring to fig. 1 to 3, in the present embodiment, the sheet placing station is constituted by four positioning columns 210. The four positioning columns 210 form a sheet placing station, and meanwhile the positioning columns 210 have a positioning function, are simple in structure and easy to implement. Alternatively, the sheet placing station may be a groove provided on the second die 200 for placing the sheet, and the planar shape of the groove is set with reference to the planar profile of the sheet.

Referring to fig. 1 to 3, in the present embodiment, the first mold 100 is provided with a first fixing means for fixing the sheet to the first mold 100. The first fixing means is provided to facilitate the sheet material to be more firmly adhered to the first mold 100 when the first mold 100 is separated from the second mold 200.

Referring to fig. 1 to 3, in the present embodiment, the first fixing means is configured as a first suction means 130. The first adsorption device 130 can firmly adhere the sheet to the first mold 100, and the structure is simple and easy to implement. In this embodiment, the first suction device 130 may be a vacuum chuck or the like that sucks by forming a pressure difference on both sides of the sheet. Alternatively, in other cases, the fixing device may be a robot or the like, so that the sheet material is more firmly attached to the first mold 100.

Referring to fig. 1 to 3, in the present embodiment, the third mold 300 is provided with a second fixing means for fixing the sheet to the third mold 300. Second fixing means are provided to facilitate separation of the first mold 100 from the third mold 300, so that the double-coated sheet can be transferred to the third mold 300 and can be taken out on the third mold 300.

Referring to fig. 1 to 3, in the present embodiment, the second fixing device is configured as a second adsorption device 330. The second adsorption device 330 is used for transferring and adhering the sheet to the third mould 300, and the structure is simple and easy to implement. In this embodiment, the suction device may be a vacuum chuck or the like that sucks by forming a pressure difference on both sides of the sheet. Alternatively, in other cases, the second fixing device may be a robot or the like, which transfers the sheet material to adhere to the third mold 300.

In this embodiment, the first fixing means and the second fixing means may be controlled by the controller so that the sheet can be firmly adhered to the first mold 100 when the first mold 100 is separated from the second mold 200 by starting at different steps; it is also convenient that the sheet is transferred to be adhered to the third mold 300 and taken out when the first mold 100 is separated from the third mold 300.

Referring to fig. 4, in the present embodiment, a method for producing a double-sided encapsulated sheet using the above-described mold for double-sided encapsulation of a sheet for a hydrogen fuel cell includes the steps of: a) placing the sheet material in the second mold 200; b) closing the first mold 100 and the second mold 200 and injecting the first mold cavity 110 through the first runner 120; c) separating the first mold 100 from the second mold 200, and attaching the sheet to the first mold 100; d) closing the first mold 100 and the third mold 300 and injecting the molten metal into the second cavity 310 through the second runner 320; e) the first die 100 is separated from the third die 300 and the double-coated sheet is taken out. The production method can produce double-sided encapsulated sheets with better quality and lower cost.

The double-sided encapsulated mold for the sheet of the hydrogen fuel cell and the production method thereof in the embodiment are suitable for producing double-sided encapsulated sheets, especially for producing double-sided encapsulated sheets in the field of hydrogen fuel cells, such as graphite, metal sheets or flexible resin films which need double-sided encapsulation. Of course, the double-sided encapsulated sheet in other fields can also be produced and processed by adopting the sheet double-sided encapsulated die for the hydrogen fuel cell and the production method thereof.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.

Claims

1. A mold for double-sided encapsulation of a sheet for a hydrogen fuel cell, comprising:

the first die (100) is provided with a first cavity (110) and a first flow passage (120) communicated with the first cavity (110);

a second mold (200) provided with a sheet placing station;

the third die (300) is provided with a second cavity (310) and a second flow passage (320) communicated with the second cavity (310);

the first die (100) is used for being matched with the second die (200) and the third die (300) respectively.

2. The hydrogen fuel cell sheet double-sided encapsulation mold according to claim 1, characterized in that: after the first die (100) and the third die (300) are closed, the first cavity (110) and the second cavity (310) are symmetrically arranged.

3. The hydrogen fuel cell sheet double-sided encapsulation mold according to claim 1, characterized in that: the second mould (200) is provided with a positioning structure for positioning the sheet material.

4. The hydrogen fuel cell sheet double-sided encapsulation mold according to claim 3, characterized in that: the positioning structure is configured to be at least two positioning columns (210), and the first mold (100) is provided with corresponding containing holes (140) for containing the positioning columns (210).

5. The hydrogen fuel cell sheet double-sided encapsulation mold according to claim 4, characterized in that: the diameters of at least two positioning columns (210) are different.

6. The hydrogen fuel cell sheet double-sided encapsulation mold according to claim 1, characterized in that: the first mould (100) is provided with first fixing means for fixing the sheet to the first mould (100).

7. The hydrogen fuel cell sheet double-sided encapsulation mold according to claim 6, characterized in that: the first fixture is configured as a first adsorption device (130).

8. The sheet double-sided encapsulation mold for a hydrogen fuel cell according to claim 1, characterized in that: the third mould (300) is provided with second fixing means for fixing the sheet to the third mould (300).

9. The hydrogen fuel cell sheet double-sided encapsulation mold according to claim 8, characterized in that: the second fixture is configured as a second adsorption device (330).