Glue injection jig for bipolar plate of fuel cell

Abstract

The utility model discloses a fuel cell bipolar plate glue injection jig which comprises an upper template and a lower template, the upper template is detachably connected with the lower template, a first transparent mold core is arranged in the upper template, an outer sealing strip, an inner sealing strip and an ejection opening are arranged on the first transparent mold core, a second transparent mold core is arranged on the lower template, and the ejection opening is arranged on the second transparent mold core. A base is arranged on the second transparent mold core, a first cavity is formed between the outer sealing strip and the inner sealing strip, a second cavity is formed between the outer sealing strip and the base, and a sealing cavity is formed among the outer sealing strip, the inner sealing strip and the base, so that the two surfaces of the bipolar plate can be subjected to glue injection and curing processing at the same time, the processing steps can be simplified, and the working efficiency can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of glue injection molds, in particular to a glue injection jig for a fuel cell bipolar plate. Background Art

[0002] Fuel cell bipolar plates are one of the important components of fuel cells. They have the following functions and properties: they separate fuel and oxidant and prevent gas from penetrating; they collect and conduct current with high conductivity; the designed and processed flow channels can evenly distribute gas to the reaction layer of the electrode for electrode reaction; they can discharge heat and keep the battery temperature field uniform.

[0003] During the production process of existing bipolar plates, it is necessary to use an injection mold to seal the surface of the bipolar plates. However, most of the existing injection molds can only process one surface of the bipolar plates. After processing one surface, the product needs to be disassembled and then turned over to process the other side. The processing steps are relatively cumbersome and the work efficiency is low.

[0004] Therefore, the utility model proposes a fuel cell bipolar plate glue injection jig to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a fuel cell bipolar plate glue injection jig to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a fuel cell bipolar plate glue injection jig, comprising: an upper template and a lower template, the upper template and the lower template are detachably connected, a first transparent mold core is arranged in the upper template, an outer sealing strip, an inner sealing strip and a top outlet are arranged on the first transparent mold core, a second transparent mold core is arranged on the lower template, a base is arranged on the second transparent mold core, a first cavity is formed between the outer sealing strip and the inner sealing strip, a second cavity is formed between the outer sealing strip and the base, and a sealed cavity is formed between the outer sealing strip, the inner sealing strip and the base.

[0007] Preferably, the first transparent mold core is provided with a plurality of first glue injection holes, the first glue injection holes are in a step structure, and the first glue injection holes are connected to the first cavity.

[0008] Preferably, a plurality of second glue injection holes are provided on the second transparent mold core, the second glue injection holes are in a stepped structure, and the second glue injection holes are connected to the second cavity.

[0009] Preferably, a plurality of rotatable clamping members are provided at the side end of the upper template, and a plurality of cones are provided on a surface of the clamping members facing the upper template.

[0010] Preferably, a plurality of notches and a plurality of baffles are provided on the lower template, the notches cooperate with the clamping members, and the baffles cooperate with the cones.

[0011] Preferably, a plurality of positioning pins are provided on the upper template, and a plurality of positioning grooves are provided on the lower template, and the positioning pins cooperate with the positioning grooves.

[0012] Preferably, a plurality of first positioning holes are provided on the upper template, and a plurality of second positioning holes are provided on the lower template, and the first positioning holes are aligned with the second positioning holes.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The two surfaces of the bipolar plate can be injected with glue and cured at the same time, which can simplify the processing steps and improve work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 It is a structural schematic diagram of the upper template in the utility model;

[0017] Figure 3 It is a schematic diagram of the structure of the first transparent mold core and the second transparent mold core in the utility model;

[0018] Figure 4 It is a cross-sectional view of the first transparent mold core and the second transparent mold core in the utility model;

[0019] In the figure: upper template -1, clamping piece -101, cone -102, positioning pin -103, first positioning hole -104, lower template -2, first transparent mold core -3, outer sealing strip -301, inner sealing strip -302, top outlet -303, first glue injection hole -304, second transparent mold core -4, base -401, second glue injection hole -402, first cavity -5, second cavity -6, sealing cavity -7. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-4The utility model provides a technical solution for a fuel cell bipolar plate glue injection jig: a fuel cell bipolar plate glue injection jig, comprising: an upper template 1 and a lower template 2, the upper template 1 and the lower template 2 are detachably connected, a first transparent mold core 3 is arranged in the upper template 1, an outer sealing strip 301, an inner sealing strip 302 and a top outlet 303 are arranged on the first transparent mold core 3, a second transparent mold core 4 is arranged on the lower template 2, a base 401 is arranged on the second transparent mold core 4, a first cavity 5 is formed between the outer sealing strip 301 and the inner sealing strip 302, a second cavity 6 is formed between the outer sealing strip 301 and the base 401, and a sealed cavity 7 is formed between the outer sealing strip 301, the inner sealing strip 302 and the base 401;

[0022] During processing, the bipolar plate is placed on the base 401, and then the upper template 1 and the lower template 2 are molded together. At this time, a sealed cavity 7 is formed between the outer sealing strip 301, the inner sealing strip 302 and the base 401, and the bipolar plate is fixed in the sealed cavity 7. Then the external glue injection equipment injects UV glue into the first cavity 5 and the second cavity 6. After the glue injection is completed, an external ultraviolet lamp is used to irradiate the first transparent mold core 3 and the second transparent mold core 4 to cure the UV glue in the first cavity 5 and the second cavity 6. After the curing is completed, the upper template 1 and the lower template 2 are demolded, and finally the bipolar plate is ejected from the upper template 1 from the ejection port 303 with an external ejector pin. The two surfaces of the bipolar plate can be injected with glue and cured at the same time, which can simplify the processing steps and improve work efficiency.

[0023] In this embodiment, the first transparent mold core 3 is provided with a plurality of first glue injection holes 304, the first glue injection holes 304 are in a step structure, the first glue injection holes 304 are connected to the first cavity 5, and an external glue injection device injects the UV glue into the first cavity 5 through the first glue injection holes 304. The second transparent mold core 4 is provided with a plurality of second glue injection holes 402, the second glue injection holes 402 are in a step structure, the second glue injection holes 402 are connected to the second cavity 6, and an external glue injection device injects the UV glue into the second cavity 6 through the second glue injection holes 402.

[0024] In this embodiment, a plurality of rotatable clamping members 101 are provided at the side end of the upper template 1, a plurality of cones 102 are provided on the side of the clamping member 101 facing the upper template 1, a plurality of notches and a plurality of baffles are provided on the lower template 2, the notches cooperate with the clamping members 101, and the baffles cooperate with the cones 102. When the upper template 1 and the lower template 2 are molded together, the clamping member 101 is rotated until the cone 102 is located at the lower end of the baffle. At this time, the side of the clamping member 101 is located in the notch, and the cone 102 abuts against the baffle to fix the upper template 1 and the lower template 2.

[0025] In this embodiment, a plurality of positioning pins 103 are provided on the upper template 1, and a plurality of positioning grooves are provided on the lower template 2, and the positioning pins 103 cooperate with the positioning grooves.

[0026] In this embodiment, a plurality of first positioning holes 104 are provided on the upper template 1 , and a plurality of second positioning holes are provided on the lower template 2 . The first positioning holes 104 are aligned with the second positioning holes.

[0027] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fuel cell bipolar plate glue injection jig, comprising: An upper template (1) and a lower template (2) are detachably connected, characterized in that a first transparent mold core (3) is provided in the upper template (1), an outer sealing strip (301), an inner sealing strip (302) and a top outlet (303) are provided on the first transparent mold core (3), a second transparent mold core (4) is provided on the lower template (2), a base (401) is provided on the second transparent mold core (4), a first cavity (5) is formed between the outer sealing strip (301) and the inner sealing strip (302), a second cavity (6) is formed between the outer sealing strip (301) and the base (401), and a sealed cavity (7) is formed between the outer sealing strip (301), the inner sealing strip (302) and the base (401).

2. A fuel cell bipolar plate glue injection jig according to claim 1, characterized in that: The first transparent mold core (3) is provided with a plurality of first glue injection holes (304), the first glue injection holes (304) are in a stepped structure, and the first glue injection holes (304) are connected to the first mold cavity (5).

3. A fuel cell bipolar plate glue injection jig according to claim 2, characterized in that: The second transparent mold core (4) is provided with a plurality of second glue injection holes (402), the second glue injection holes (402) are in a stepped structure, and the second glue injection holes (402) are in communication with the second mold cavity (6).

4. A fuel cell bipolar plate glue injection jig according to claim 3, characterized in that: A plurality of rotatable clamping members (101) are arranged at the side end of the upper template (1), and a plurality of cones (102) are arranged on one surface of the clamping members (101) facing the upper template (1).

5. A fuel cell bipolar plate glue injection jig according to claim 4, characterized in that: The lower template (2) is provided with a plurality of notches and a plurality of baffles, the notches cooperate with the clamping pieces (101), and the baffles cooperate with the cones (102).

6. A fuel cell bipolar plate glue injection jig according to claim 5, characterized in that: The upper template (1) is provided with a plurality of positioning pins (103), and the lower template (2) is provided with a plurality of positioning grooves, and the positioning pins (103) cooperate with the positioning grooves.

7. A fuel cell bipolar plate glue injection jig according to claim 6, characterized in that: The upper template (1) is provided with a plurality of first positioning holes (104), and the lower template (2) is provided with a plurality of second positioning holes, and the first positioning holes (104) are aligned with the second positioning holes.

Images