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CN-115663228-B - Bipolar plate sealing ring bonding production system of fuel cell

CN115663228BCN 115663228 BCN115663228 BCN 115663228BCN-115663228-B

Abstract

The invention discloses a bipolar plate sealing ring bonding production system of a fuel cell, which is characterized by comprising a positioning plate for positioning a sealing ring and a screen printing gluing mechanism, wherein the positioning plate is provided with a positioning groove which is consistent with the shape of the sealing ring to be bonded, the depth of the positioning groove is smaller than the thickness of the sealing ring to be bonded, the screen printing gluing mechanism comprises a polar plate fixing plate and a screen fixing frame which are mutually hinged, the polar plate fixing plate is provided with a positioning frame for positioning the bipolar plate, one side of the screen fixing frame, which faces the polar plate fixing plate, is provided with a printing screen, and the printing screen is provided with a transparent pattern which is consistent with the shape of the sealing ring. The invention has the advantages of reasonable structural design, capability of improving the efficiency of small-batch production, reduction of production cost and the like.

Inventors

  • YUAN HONGGEN
  • LI JIN
  • TAN XIANG
  • NIE HAIYUN

Assignees

  • 重庆宗申氢能源动力科技有限公司

Dates

Publication Date
20260508
Application Date
20221212

Claims (7)

  1. 1. The bipolar plate sealing ring bonding production system of the fuel cell is characterized by comprising a positioning plate (1) for positioning a sealing ring and a screen printing gluing mechanism (2), wherein the positioning plate (1) is provided with a positioning groove which is consistent with the shape of the sealing ring to be bonded, the depth of the positioning groove is smaller than the thickness of the sealing ring to be bonded, the screen printing gluing mechanism (2) comprises a polar plate fixing plate (21) and a screen fixing frame (23) which are mutually hinged, the polar plate fixing plate (21) is provided with a positioning frame for positioning a bipolar plate, one side of the screen fixing frame (23) facing the polar plate fixing plate (21) is provided with a printing screen (22), and the printing screen (22) is provided with a transparent pattern consistent with the shape of the sealing ring; The automatic double-pole plate fixing device is characterized in that a feeding table (3) is further arranged below the screen printing gluing mechanism (2), the feeding table (3) comprises a bottom plate (31) which is arranged in parallel with the pole plate fixing plate (21), four guide posts (32) which are arranged in a rectangular mode are vertically arranged on the bottom plate (31), the spacing between the guide posts (32) in the rectangular width direction is consistent with the width of a double-pole plate, a first lifting mechanism (33) is further arranged on the bottom plate (31), a supporting plate (34) is connected to the movable end of the first lifting mechanism (33), four guide holes matched with the guide posts (32) are formed in the supporting plate (34), the supporting plate (34) is slidably matched with the guide posts (32) through the guide holes, the pole plate fixing plate (21) is fixedly arranged at the other ends of the four guide posts (32), and the positioning frame penetrates through the pole plate fixing plate (21) and is aligned with the double-pole plate placed between the four guide posts (32). The distance between the printing silk screen (22) and the polar plate fixing plate (21) is equal to the thickness of the bipolar plate, a pushing component (4) is arranged on one side of the polar plate fixing plate (21) in the axial direction of the hinge shaft, the pushing component (4) comprises a linear telescopic mechanism (41), the telescopic end of the linear telescopic mechanism (41) faces the polar plate fixing plate (21) and is provided with a pushing plate (42), the vertical distance between the pushing plate (42) and the polar plate fixing plate (21) is smaller than the thickness of the bipolar plate, and one side of the polar plate fixing plate (21) away from the pushing component (4) is connected with a polar plate positioning seat (5) in a flush mode; the bipolar plate positioning device is characterized in that a second lifting mechanism (6) which is vertically arranged is arranged right below the polar plate positioning seat (5), the movable end of the second lifting mechanism (6) faces, a top plate (61) for supporting the positioning plate (1) is arranged, the polar plate positioning seat (5) comprises a rotation mechanism (51) and a base (52) arranged on the rotation end of the rotation mechanism (51), a supporting plate (53) which is flush with the polar plate fixing plate (21) is arranged on the base (52), a grabbing mechanism for fixing the bipolar plate is arranged on the supporting plate (53), and the rotation shaft of the rotation mechanism is parallel to the hinge shaft of the polar plate fixing plate (21).
  2. 2. The bonding production system for bipolar plate seal rings of fuel cells according to claim 1, wherein the first lifting mechanism (33) comprises a screw rod vertically penetrating through the bottom plate (31) and a screw rod nut matched with the screw rod, the upper end of the screw rod is fixedly arranged on the supporting plate (34), the screw rod nut is rotatably arranged at the bottom of the bottom plate (31), a stepping motor (35) is further arranged on the bottom plate (31), a large gear is arranged at the output end of the stepping motor (35), and a small gear meshed with the large gear is arranged on the screw rod nut.
  3. 3. The bipolar plate gasket bonding production system of a fuel cell according to claim 1, wherein four corners of the bottom plate (31) are each provided with one support column (36), and the plate fixing plate (21) is fixedly mounted on four of the support columns (36).
  4. 4. The bipolar plate seal ring bonding production system of a fuel cell according to claim 1, wherein two of the support plates (53) are symmetrically arranged in a radial direction of the turning mechanism.
  5. 5. The bipolar plate seal ring bonding production system of a fuel cell according to claim 1, wherein the turning mechanism is a 180-degree rotary cylinder or a stepper motor.
  6. 6. The bipolar plate gasket bonding production system for a fuel cell according to claim 1, wherein the gripping mechanism comprises a plurality of vent holes penetrating through the support plate (53), the plurality of vent holes being arranged in a matrix along a length direction and a width direction of the support plate (53), and all the vent holes being connected to a vacuum adsorption system.
  7. 7. The bonding production system for the bipolar plate sealing rings of the fuel cells according to claim 6, wherein a conveying roller way is further arranged right below the polar plate positioning seat (5), the width of a baffle plate of the conveying roller way is matched with the width of a positioning plate, four corners of the top plate (61) are respectively provided with a vertically arranged ejector rod (62), the upper ends of the ejector rods are provided with positioning convex columns with smaller diameters, and the positioning plate (1) is provided with four positioning holes which are arranged in one-to-one correspondence with the positioning convex columns, and the diameters of the positioning holes are consistent with the diameters of the positioning convex columns.

Description

Bipolar plate sealing ring bonding production system of fuel cell Technical Field The invention relates to the technical field of fuel cells, in particular to a bipolar plate sealing ring bonding production system of a fuel cell. Background A fuel cell is a chemical device that directly converts chemical energy of fuel into electric energy, and is also called an electrochemical generator. The fuel cell converts the Gibbs free energy in the chemical energy of the fuel into electric energy through electrochemical reaction, is not limited by the Carnot cycle effect, and has high efficiency. The fuel cell uses fuel and oxygen as raw materials, has no mechanical transmission parts, and has little harmful gas emission and long service life. Therefore, fuel cells are increasingly popular in everyday equipment applications. Among these, bipolar plates, also known as current collector plates, are one of the important components of fuel cells for separating fuel from oxidant, preventing gas permeation, collecting and conducting electrical current. In addition, for water-cooled fuel cells, cooling channels are also provided between the bipolar plates, which are typically provided on one of the plates, and corresponding sealing rings are provided on the other plate by means of bonding, and then the bipolar plates are laminated and pressed into a fuel cell. Because the polar plate is not provided with the sealing ring mounting groove, the sealing ring is usually mounted by gluing by a glue dispenser, and then the sealing ring is bonded on the polar plate. And the research and development of the product generally needs to be carried out after trial production and small-batch production, and then the product is put into mass production. In the process of trial production and small-batch production, manual gluing is generally adopted to save cost, so that the production efficiency is low and the gluing quality is poor. Disclosure of Invention Aiming at the defects of the prior art, the invention aims to provide a bipolar plate sealing ring bonding production system which has reasonable structural design and can improve the efficiency of small-batch production and reduce the production cost. In order to solve the technical problems, the invention adopts the following technical scheme: A bipolar plate sealing ring bonding production system of a fuel cell is characterized by comprising a positioning plate for positioning a sealing ring and a screen printing gluing mechanism, wherein the positioning plate is provided with a positioning groove which is consistent with the shape of the sealing ring to be bonded, the depth of the positioning groove is smaller than the thickness of the sealing ring to be bonded, the screen printing gluing mechanism comprises a polar plate fixing plate and a screen fixing frame which are mutually hinged, the polar plate fixing plate is provided with a positioning frame for positioning the bipolar plate, one side of the screen fixing frame, facing the polar plate fixing plate, is provided with a printing screen, and the printing screen is provided with a glue penetrating pattern consistent with the shape of the sealing ring. By adopting the structure, the bipolar plate to be glued is placed in the positioning frame of the polar plate fixing plate, the hinged silk screen fixing frame is covered on the polar plate fixing plate, glue is uniformly scraped through the printing silk screen, and the glue penetrates through the printing silk screen through the glue penetrating pattern to form a uniform glue coating layer. The sealing ring is placed in the positioning groove of the positioning plate, the glued bipolar plate is covered on the positioning plate, the depth of the positioning groove is smaller than the thickness of the sealing ring, so that the sealing ring is slightly higher than the positioning plate, and after the positioning plate is attached to the bipolar plate, the sealing ring is tightly attached to the glued layer, and therefore gluing is completed. The structure adopts screen printing to finish gluing, ensures the precision of manual gluing, does not need to adopt a glue dispenser, greatly saves the cost of small-batch production, and also improves the efficiency of small-batch production. Further, a feeding table is further arranged below the screen printing gluing mechanism, the feeding table comprises a bottom plate which is arranged in parallel with the polar plate fixing plates, four guide posts which are arranged in a rectangular mode are vertically arranged on the bottom plate, the distance between the guide posts in the rectangular width direction is consistent with the width of the bipolar plate, a first lifting mechanism is further arranged on the bottom plate, a supporting plate is connected to the movable end of the first lifting mechanism, four guide holes which are matched with the guide posts are formed in the supporting plate, the supporting plate is slidably matched wi