CN113524768A

CN113524768A - Pressing device for graphite bipolar plate of fuel cell

Info

Publication number: CN113524768A
Application number: CN202110700536.4A
Authority: CN
Inventors: 杜玲枝; 李航; 杨逸飞; 梁浜雷; 李山鹰; 赵亚奇; 冯巧
Original assignee: Henan University of Urban Construction
Current assignee: Henan University of Urban Construction
Priority date: 2021-06-23
Filing date: 2021-06-23
Publication date: 2021-10-22

Abstract

The invention discloses a pressing device for a graphite bipolar plate of a fuel cell, and relates to the technical field of fuel cell related production equipment. The heating device comprises a base, a working table plate is arranged right above the base, a processing plate is arranged on the upper side of the working table plate, a pressing mold is arranged on the upper side of the processing plate, a pressing plate is arranged between two connecting plates, a mounting plate is arranged right above the pressing plate, air nozzles are fixed on the lower sides of the pressing plate on the left and right of a heater, a lifting cylinder is arranged right above the middle of a support frame, a bidirectional cylinder is fixed at the lower end of a sliding plate, suckers are fixed at the piston ends of the bidirectional cylinder, an infrared sensor is fixed at the upper end of the base, and an extrusion cylinder is fixed at the upper end of the processing plate on the left and right of the pressing mold. The invention is convenient for taking and placing the pressing die up and down by the combined work of the lifting cylinder and the sucker, improves the production efficiency, and simultaneously controls the distance adjustment of the sucker and the extrusion of the extrusion cylinder by the bidirectional cylinder to achieve the purpose of preparing graphite bipolar plates with different specifications.

Description

Pressing device for graphite bipolar plate of fuel cell

Technical Field

The invention belongs to the technical field of fuel cell related production equipment, and particularly relates to a pressing device for a graphite bipolar plate of a fuel cell.

Background

A fuel cell is a chemical device that directly converts chemical energy of fuel into electrical energy, and is also called an electrochemical generator. It is a fourth power generation technology following hydroelectric power generation, thermal power generation and atomic power generation. The fuel cell converts the Gibbs free energy in the chemical energy of the fuel into electric energy through electrochemical reaction, and is not limited by the Carnot cycle effect, so the efficiency is high; in addition, fuel cells use fuel and oxygen as raw materials; meanwhile, no mechanical transmission component is arranged, so that no noise pollution is caused, the discharged harmful gas is very little, the bipolar plate (also called as a current collecting plate) is one of important components of the fuel cell, the bipolar plate (also called as a separator) has the function of providing a gas flow channel, the hydrogen and the oxygen in a cell gas chamber are prevented from communicating, and a current path is established between a cathode and an anode which are connected in series. The thickness of the bipolar plate should be as thin as possible while maintaining a certain mechanical strength and good gas barrier effect, to reduce the conductive resistance to current and heat,

the prior publication discloses CN112103516A, a continuous roll forming device for manufacturing graphite bipolar plates, which comprises a first conveyor belt, a second conveyor belt and a bonding mechanism, wherein the first conveyor belt is provided with a first mixing mechanism, a first rolling mechanism and a first tunnel type heating furnace; the second conveying belt is provided with a second material mixing mechanism, a second rolling mechanism and a second tunnel type heating furnace; the first graphite unipolar plate and the second graphite unipolar plate are identical in structure and size; also discloses a continuous rolling forming method for manufacturing the graphite bipolar plate, which comprises the following steps: step one, mixing raw materials; pressing the raw material into a graphite unipolar plate; step three, solidifying the graphite unipolar plate; and step four, bonding the two graphite unipolar plates to form the graphite bipolar plate. The invention has the advantages of high finished product quality and high production efficiency, but the invention still has the following disadvantages in practical use:

1. when the graphite bipolar plate is pressed, the graphite bipolar plate is not convenient for material taking up and down, so that the working efficiency of workers can be reduced in the whole pressing process;

2. when the pressing device presses graphite, due to the fact that adjustment work cannot be conducted on the pressing device, when graphite bipolar plates of different specifications need to be prepared, other pressing devices need to be used for pressing, and the mode is complicated, and therefore production efficiency of the graphite bipolar plates is reduced.

Therefore, the existing pressing device for graphite bipolar plate of fuel cell can not meet the requirement in practical use, so that the market urgently needs improved technology to solve the above problems.

Disclosure of Invention

The invention aims to provide a pressing device for a graphite bipolar plate of a fuel cell, which is convenient for taking and placing a pressing die up and down through the combined work of a lifting cylinder and a sucker, improves the production efficiency, and controls the adjustment of the sucker and the extrusion of an extrusion cylinder through a bidirectional cylinder so as to prepare the graphite bipolar plates with different specifications.

In order to solve the technical problems, the invention is realized by the following technical scheme:

the invention relates to a pressing device for a graphite bipolar plate of a fuel cell, which comprises a base, wherein a working table plate is arranged right above the base, a ball screw is arranged at the middle position of the lower side of the working table plate, a motor is fixed at the front side of the working table plate, a processing plate is arranged at the upper side of the working table plate, a pressing die is arranged at the upper side of the processing plate, supporting plates are fixed at the middle parts of the front side wall and the rear side wall of the working table plate, connecting plates are fixed at the upper ends of the supporting plates, a pressing plate is arranged between the two connecting plates, an installing plate is arranged right above the pressing plate, a pressurizer is fixed at the upper end of the base at the left side of the working table plate, and extruding cylinders are fixed at the upper ends of the processing plates at the left side and the right side of the pressing die;

a heater is fixed in the middle of the lower side of the pressing plate, air nozzles are fixed on the lower sides of the pressing plate on the left side and the right side of the heater, ball nuts are sleeved on the surface sides of the ball screws, moving openings are formed in positions, corresponding to the ball screws, of the working table plate, moving blocks are fixed on the lower sides of the processing plate, corresponding to the moving openings, when the moving blocks are moved by the moving rings and the ball nuts, the moving blocks move in the moving openings, moving rings are fixed on the lower sides of the moving blocks, and the moving rings penetrate through the moving openings and are movably connected with the ball nuts;

a support frame is arranged above the working table plate behind the pressing plate, a lifting cylinder is arranged right above the middle of the support frame, a sliding plate is fixed at the piston end of the lifting cylinder, a bidirectional cylinder is fixed at the lower end of the sliding plate, and suckers are fixed at the piston ends of the bidirectional cylinder;

the upper end of base is fixed with infrared sensor, and infrared sensor is linear equipartition at the base upside and has two, and infrared sensor is unanimous with the middle part of pressfitting board, the middle part of support frame about the position respectively.

Furthermore, the two ends of the ball screw are movably connected with the working table plate, the rotating shaft end of the motor is fixedly connected with one end of the ball screw, and when the pressing die is placed on the processing plate, the pressing die is pushed by the extrusion cylinder, so that the stability of the pressing die at the position of the processing plate is ensured.

Furthermore, a limiting opening is formed in the work table plate on the left side and the right side of the moving opening, a limiting rod is fixed inside the limiting opening, a limiting barrel is fixed at the position, corresponding to the limiting opening, of the lower side of the processing plate, a limiting barrel is arranged in the limiting opening, the limiting barrel is located in the limiting opening, the limiting rod limits the limiting barrel, therefore, the limiting barrel is guaranteed not to fall off in the limiting opening, the stability of the processing plate on the work table plate is guaranteed, and the limiting barrel is sleeved on the corresponding limiting rod respectively.

Furthermore, adjusting cylinders are fixed on the left and right parts between the pressing plates and the mounting plates, the pressing plates are controlled to move up and down through the adjusting cylinders, and two ends of the mounting plates are fixed on the adjacent connecting plates.

Further, the upper end of mounting panel is provided with the trachea, guarantees the pressurizer through the trachea and to the work of pressurizeing in the embossing mold utensil, tracheal one end and the output fixed connection of pressurizer, tracheal other end is fixed with the three-way valve, the upper end of air cock all with three-way valve fixed connection.

Furthermore, a sliding rod is fixed inside the supporting frame, sliding holes are formed in the side wall of the sliding plate at positions corresponding to the sliding rod, the sliding plate is sleeved on the sliding rod through the sliding holes, the sliding plate is limited through the sliding rod, and the stability of the sliding plate on the supporting frame is guaranteed.

Furthermore, a stroke cylinder frame is fixed on the rear side of the support frame, a moving frame is fixed on the rear end of the lifting cylinder, the left and right movement of the lifting cylinder is controlled through the stroke cylinder frame, and the moving frame is fixedly connected with a piston end of the stroke cylinder frame.

Furthermore, the support columns are fixed to the left and right positions of the lower side of the stroke cylinder frame, the lower sides of the support columns are fixed to the base, the movable frame is supported through the support columns, stability of the movable frame is guaranteed, and the placing frames are arranged on the left and right positions of the upper end of the base corresponding to the support frames.

The invention has the following beneficial effects:

1. according to the invention, the lifting cylinder and the sucker are arranged, when the pressing mould is required to be conveniently taken and placed up and down, the pressing mould is placed on the placing frame, the lifting cylinder is controlled by the stroke cylinder frame to move in the left-right direction, the sucker is driven by the lifting cylinder to move, and after the pressing mould is pushed to be right below the lifting cylinder, the bidirectional cylinder is controlled by the lifting cylinder to move downwards, so that the sucker can conveniently suck the pressing mould, and meanwhile, the pressing mould is conveniently placed on the placing frame, and therefore, the work of quickly taking and placing up and down is achieved.

2. According to the invention, the bidirectional cylinder and the extrusion cylinder are arranged, so that in order to prepare graphite bipolar plates with different specifications, pressing dies with different specifications are required to be used, and the bidirectional cylinder is operated to push the two suckers to move towards different directions, so that the distance between the two suckers can be adjusted, thus the pressing dies with different specifications can be adsorbed, and meanwhile, when the pressing dies are positioned on a processing plate, the pressing dies can be clamped through the extrusion cylinder, and the length of the pressing dies is not more than the distance between the two extrusion cylinders, so that the pressing dies with different specifications can be used, and the graphite bipolar plates with different specifications can be prepared.

Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a block diagram of the inventive work platen of FIG. 1;

FIG. 3 is a block diagram of the base of FIG. 1 according to the present invention;

FIG. 4 is a block diagram of the lift cylinder of FIG. 1 according to the present invention;

FIG. 5 is a structural view of the laminate panel of FIG. 1 in accordance with the present invention;

fig. 6 is a block diagram of the process plate of fig. 1 according to the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1. pressing the plywood; 101. an air tube; 102. a three-way valve; 103. mounting a plate; 104. an adjusting cylinder; 105. an air tap; 106. a heater; 2. a lifting cylinder; 201. a sliding plate; 2011. a slide hole; 202. a bidirectional cylinder; 203. a suction cup; 204. a movable frame; 3. a stroke cylinder frame; 4. a support frame; 401. a support pillar; 402. a slide bar; 5. a work table; 501. moving the port; 502. a ball screw; 503. a limiting port; 504. a ball nut; 505. a motor; 506. a limiting rod; 6. a base; 601. a support plate; 602. an infrared sensor; 603. placing a rack; 7. pressing a mould; 8. processing a plate; 801. an extrusion cylinder; 802. a moving block; 803. a limiting cylinder; 804. a movable ring; 9. a pressurizer; 10. a connecting plate.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Referring to fig. 1-6, the present invention relates to a pressing apparatus for a graphite bipolar plate of a fuel cell, which comprises a base 6, a worktable plate 5 disposed directly above the base 6, a ball screw 502 disposed at the middle position of the lower side of the worktable plate 5, a motor 505 fixed at the front side of the worktable plate 5, a processing plate 8 disposed at the upper side of the worktable plate 5, a pressing mold 7 disposed at the upper side of the processing plate 8, supporting plates 601 fixed at the middle portions of the front and rear side walls of the worktable plate 5, connecting plates 10 fixed at the upper ends of the supporting plates 601, a pressing plate 1 disposed between the two connecting plates 10, a mounting plate 103 disposed directly above the pressing plate 1, a pressurizer 9 fixed at the upper end of the base 6 at the left side of the worktable plate 5, a heater 106 fixed at the middle portion of the lower side of the pressing plate 1, an air nozzle 105 fixed at the lower side of the pressing plate 1 at the left and right sides of the heater 106, and when the pressing plate 1 is covered on the pressing mold 7, the air tap 105 and the heater 106 on the laminated plate 1 are located at the same position as the inner space of the pressing mold 7, the ball screw 502 is sleeved with a ball nut 504 on the surface side, the moving port 501 is formed in the position, corresponding to the ball screw 502, of the working table plate 5, the moving block 802 is fixed at the position, corresponding to the moving port 501, of the lower side of the processing plate 8, the moving ring 804 is fixed at the lower side of the moving block 802, the moving ring 804 penetrates through the moving port 501 and is movably connected with the ball nut 504, the stroke cylinder frame 3 is fixed at the rear side of the support frame 4, the placing frames 603 are arranged at the upper end of the base 6, corresponding to the left and right parts of the support frame 4, and when the ball screw 502 rotates, the ball screw 502 can drive the ball nut 504 to rotate, so that the moving ring 804, the moving block 802 and the processing plate 8 are sequentially driven to move;

a support frame 4 is arranged above a working table plate 5 behind the laminated board 1, a lifting cylinder 2 is arranged right above the middle part of the support frame 4, a sliding plate 201 is fixed at the piston end of the lifting cylinder 2, a bidirectional cylinder 202 is fixed at the lower end of the sliding plate 201, suction cups 203 are fixed at the piston end of the bidirectional cylinder 202, an infrared sensor 602 is fixed at the upper end of the base 6, the working plate 8 stops after moving to different infrared sensor 602 positions respectively, different infrared sensors 602 transmit signals to different electronic elements, two infrared sensors 602 are linearly and uniformly distributed at the upper side of the base 6, the infrared sensors 602 are respectively consistent with the middle part of the laminated board 1 and the middle part of the support frame 4 in upper and lower positions, the pressing mould 7 is placed on a placing frame 603 on the base 6, the stroke cylinder frame 3 is controlled to work, so that the lifting cylinder 2 is driven to move, and the lifting cylinder 2 drives the suction cups 203 to move to the pressing mould 7, and control sucking disc 203 and hold the embossing mold utensil 7, then control lift cylinder 2 to the middle part position of support frame 4, control motor 505 work this moment, consequently, ball screw 502 drives the processing board 8 and moves under lift cylinder 2, and put embossing mold utensil 7 on the processing board 8 through lift cylinder 2 control sucking disc 203, and then move the processing board 8 to the position of pressfitting board 1, adjust cylinder 104 control pressfitting board 1 lid this moment on embossing mold utensil 7, and pressurizer 9 passes through trachea 101 simultaneously, air cock 105 pressurizes the inside of embossing mold utensil 7, control heater 106 simultaneously and heat its inside, consequently, carry out the suppression work to the graphite of embossing mold utensil 7 inside.

As shown in fig. 2 and 6, two ends of a ball screw 502 are movably connected with a work table board 5, a rotating shaft end of a motor 505 is fixedly connected with one end of the ball screw 502, the upper ends of processing plates 8 on the left and right of a pressing mold 7 are both fixed with an extrusion cylinder 801, the work table boards 5 on the left and right of a moving port 501 are both provided with a limiting port 503, the insides of the limiting ports 503 are both fixed with a limiting rod 506, the positions of the lower sides of the processing plates 8 corresponding to the limiting ports 503 are both fixed with a limiting cylinder 803, when the processing plates 8 move on the work table boards 5, the processing plates 8 can drive the limiting cylinders 803 to move in the limiting ports 503, meanwhile, the limiting cylinders 803 slide on the limiting rods 506, the limiting cylinders 803 are arranged in the corresponding limiting ports 503, and the limiting cylinders 803 are respectively sleeved on the corresponding limiting rods 506.

As shown in fig. 1, 4, and 5, adjusting cylinders 104 are fixed at left and right positions between the press plate 1 and the mounting plate 103, two ends of the mounting plate 103 are fixed on the adjacent connecting plates 10, an air pipe 101 is arranged at an upper end of the mounting plate 103, one end of the air pipe 101 is fixedly connected with an output end of the pressurizer 9, the other end of the air pipe 101 is fixed with a three-way valve 102, an upper end of an air nozzle 105 is fixedly connected with the three-way valve 102, a sliding rod 402 is fixed inside the support frame 4, sliding holes 2011 are formed in positions on side walls of the sliding plate 201 corresponding to the sliding rod 402, the sliding plate 201 is sleeved on the sliding rod 402 through the sliding holes 2011, when the lifting cylinder 2 is driven to move by the stroke cylinder frame 3, the lifting cylinder 2 drives the sliding plate 201 to move on the support frame 4, and therefore the sliding plate 201 can slide on the sliding rod 402 through the sliding holes 2011.

As shown in fig. 1, a moving frame 204 is fixed at the rear end of the lifting cylinder 2, the moving frame 204 is fixedly connected with a piston end of the stroke cylinder frame 3, when the stroke cylinder frame 3 pushes the moving frame 204 to move left and right, the moving frame 204 drives the lifting cylinder 2 to move on the support frame 4, support columns 401 are fixed at the left and right positions of the lower side of the stroke cylinder frame 3, and the lower sides of the support columns 401 are fixed on the base 6.

The above are only preferred embodiments of the present invention, and the present invention is not limited thereto, and any modification, equivalent replacement, and improvement made to the technical solutions described in the above embodiments, and to some of the technical features thereof, are included in the scope of the present invention.

Claims

1. A pressing device of a graphite bipolar plate for a fuel cell, comprising a base (6), characterized in that: a working table plate (5) is arranged right above the base (6), a ball screw (502) is arranged in the middle of the lower side of the working table plate (5), a motor (505) is fixed on the front side of the working table plate (5), a processing plate (8) is arranged on the upper side of the working table plate (5), a pressing die (7) is arranged on the upper side of the processing plate (8), supporting plates (601) are fixed in the middle of the front side wall and the rear side wall of the working table plate (5), the upper ends of the supporting plates (601) are all fixed with connecting plates (10), a laminated plate (1) is arranged between the two connecting plates (10), a mounting plate (103) is arranged right above the laminated plate (1), a pressurizer (9) is fixed at the upper end of a base (6) on the left side of the working table plate (5), extrusion cylinders (801) are fixed at the upper ends of the processing plates (8) on the left and right sides of the pressing die (7);

a heater (106) is fixed in the middle of the lower side of the laminated plate (1), air nozzles (105) are fixed on the lower sides of the laminated plate (1) on the left and right sides of the heater (106), a ball nut (504) is sleeved on the surface side of the ball screw (502), a moving opening (501) is formed in the position, corresponding to the ball screw (502), of the workbench plate (5), a moving block (802) is fixed in the position, corresponding to the moving opening (501), of the lower side of the processing plate (8), a movable ring (804) is fixed on the lower side of the moving block (802), and the movable ring (804) penetrates through the moving opening (501) and is movably connected with the ball nut (504);

a support frame (4) is arranged above a working table plate (5) behind the laminated plate (1), a lifting cylinder (2) is arranged right above the middle of the support frame (4), a sliding plate (201) is fixed at the piston end of the lifting cylinder (2), a bidirectional cylinder (202) is fixed at the lower end of the sliding plate (201), and suckers (203) are fixed at the piston ends of the bidirectional cylinder (202);

the upper end of base (6) is fixed with infrared sensor (602), and infrared sensor (602) are linear equipartition at base (6) upside and have two, and infrared sensor (602) position unanimous about the middle part with the middle part of pressfitting board (1), the middle part of support frame (4) respectively.

2. The pressing device of the graphite bipolar plate for the fuel cell as claimed in claim 1, wherein both ends of the ball screw (502) are movably connected with the working platen (5), and the rotating shaft end of the motor (505) is fixedly connected with one end of the ball screw (502).

3. The pressing device for the graphite bipolar plate of the fuel cell according to claim 1, wherein the worktable plates (5) at the left and right sides of the moving port (501) are respectively provided with a limiting port (503), limiting rods (506) are respectively fixed inside the limiting ports (503), limiting cylinders (803) are respectively fixed at positions of the lower side of the processing plate (8) corresponding to the limiting ports (503), the limiting cylinders (803) are arranged in the corresponding limiting ports (503), and the limiting cylinders (803) are respectively sleeved on the corresponding limiting rods (506).

4. The pressing apparatus of a graphite bipolar plate for a fuel cell as claimed in claim 1, wherein an adjusting cylinder (104) is fixed to each of left and right portions between the pressing plate (1) and the mounting plate (103), and both ends of the mounting plate (103) are fixed to the adjacent connection plates (10).

5. The pressing device of the graphite bipolar plate for the fuel cell according to claim 1, wherein an air pipe (101) is arranged at the upper end of the mounting plate (103), one end of the air pipe (101) is fixedly connected with the output end of the pressurizer (9), a three-way valve (102) is fixed at the other end of the air pipe (101), and the upper ends of the air nozzles (105) are fixedly connected with the three-way valve (102).

6. The pressing device of the graphite bipolar plate for the fuel cell according to claim 1, wherein a sliding rod (402) is fixed inside the supporting frame (4), sliding holes (2011) are formed in the side wall of the sliding plate (201) at positions corresponding to the sliding rod (402), and the sliding plate (201) is sleeved on the sliding rod (402) through the sliding holes (2011).

7. The pressing device of the graphite bipolar plate for the fuel cell according to claim 1, wherein a stroke cylinder frame (3) is fixed at the rear side of the supporting frame (4), a moving frame (204) is fixed at the rear end of the lifting cylinder (2), and the moving frame (204) is fixedly connected with a piston end of the stroke cylinder frame (3).

8. The pressing device of the graphite bipolar plate for the fuel cell according to claim 7, wherein supporting columns (401) are fixed on the left and right parts of the lower side of the stroke cylinder frame (3), the lower sides of the supporting columns (401) are fixed on the base (6), and placing frames (603) are arranged on the upper end of the base (6) corresponding to the left and right parts of the supporting frame (4).