A proton exchange membrane flattening tool

Abstract

This utility model discloses a proton exchange membrane flattening fixture, including flattening rollers and a flattening frame on a fixture base plate. Roller supports are fixedly provided on all four periphery of the top surface of the fixture base plate, and horizontally arranged flattening rollers are provided on the roller supports. Multiple positioning columns for supporting the flattening frame are vertically provided on the top surface of the fixture base plate, and the flattening frame is located at the center of the multiple flattening rollers. The flattening frame has a frame structure, with a raised frame on the inner circumference of the top surface of the flattening frame. A pressure cap is placed on the flattening frame, and the annular flange at the bottom opening of the pressure cap is adapted to the structure of the raised frame. The pressure cap is fastened to the raised frame. It also includes four traction units for clamping the edges of the proton exchange membrane and providing tension. This utility model has the advantages of simple structure, low cost, convenient operation, good flattening effect of the proton exchange membrane, the ability to measure the traction force that keeps the proton exchange membrane in a flattened state, and ease of coating tests and flatness measurement.

Description

Technical Field

[0001] This utility model relates to the technical field of hydrogen production auxiliary equipment, specifically a proton exchange membrane flattening tool. Background Technology

[0002] The working principle of proton exchange membrane (PEM) water electrolysis for hydrogen production is as follows: water enters the electrolytic cell from the anode side, where it is electrolyzed to produce oxygen and protons. The protons are conducted through the proton exchange membrane to the cathode, where they undergo a reduction reaction with electrons transferred from the external circuit to produce hydrogen. The hydrogen production module consists of a proton exchange membrane positioned between the anode and cathode plates. During testing, a loading force is applied to ensure the anode and cathode plates tightly clamp the proton exchange membrane. The proton exchange membrane, being a porous membrane structure (with extensibility), plays a crucial role in the water electrolysis hydrogen production technology; therefore, it is necessary to flatten the proton exchange membrane and measure its flatness, as well as conduct coating tests. Figure 1 The proton exchange membrane 800 shown is a planar cross-shaped structure with a pull edge 801 around its perimeter. Patent publication number CN222331068U discloses a flattening device for optical film production, which includes a support and a flattening assembly. The flattening assembly includes a mounting base, two take-up rollers, two drive units, two clamping units, and two flattening units. Both take-up rollers are fixedly connected to the support. However, this device has problems such as complex structure and high cost. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the existing defects and provide a proton exchange membrane flattening fixture with simple structure, low cost, convenient operation, and good proton exchange membrane flattening effect; it can measure the traction force that keeps the proton exchange membrane in a flat state; it facilitates coating test and flatness measurement, improves the test and measurement accuracy of proton exchange membrane; and it can effectively solve the problems in the background technology.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a proton exchange membrane flattening fixture, comprising flattening rollers and a flattening frame mounted on a fixture base plate, wherein roller supports are fixedly mounted on the four periphery of the top surface of the fixture base plate, and horizontally arranged flattening rollers are mounted on the roller supports, with adjacent flattening rollers perpendicular to each other; a plurality of positioning columns for supporting the flattening frame are vertically mounted on the top surface of the fixture base plate, and the flattening frame is located at the center of the plurality of flattening rollers; the flattening frame has a frame structure, with a raised frame on the inner circumference of the top surface of the flattening frame, and a pressure cap is placed on the flattening frame, the annular retaining edge at the bottom opening of the pressure cap being adapted to the structure of the raised frame, and the pressure cap being fastened to the raised frame; it also includes four traction units for clamping the edge ends of the proton exchange membrane and providing them with tension.

[0005] Furthermore, both the flattening frame and the raised frame are square frame structures, and the bottom surface of the annular retaining edge at the bottom opening of the pressure cap can abut against the top surface of the flattening frame.

[0006] Furthermore, the tooling base plate has four vertically positioned columns on its top surface, and the positioning columns are respectively located at the four corners of the top surface of the tooling base plate. The top of the positioning column is also provided with a positioning convex shaft. The flattening frame has extension arms at each of its four corners. The ends of the extension arms are vertically provided with positioning holes, and the positioning holes of the extension arms can be nested on the corresponding positioning convex shafts.

[0007] Furthermore, the pulling unit includes a pulling base plate, on the top surface of which are provided a fixed magnetic plate and a movable magnetic plate that can magnetically adhere to each other. A receiving groove is opened at the bottom end of the corresponding movable magnetic plate on the top surface of the pulling base plate, and the movable magnetic plate is slidably nested in the receiving groove along its magnetic attraction direction. A tightening bolt is threadedly connected to one side wall of the pulling base plate corresponding to the fixed magnetic plate. The tightening bolt is perpendicular to the movable magnetic plate, and the end of the tightening bolt penetrates into the receiving groove and abuts against the magnetic attraction surface of the movable magnetic plate.

[0008] Furthermore, a hook is provided at the center of the bottom surface of the traction base plate, and a weight is hung on the hook.

[0009] Compared with the prior art, the beneficial effects of this utility model are as follows: This proton exchange membrane flattening fixture has each edge of the proton exchange membrane resting on its corresponding flattening roller. The weight of the base plate, fixed magnetic plate, and movable magnetic plate, along with the weight of the attached weights, pulls each edge, thus placing the proton exchange membrane in a tensioned and flattened state at its corresponding flattening frame position. The traction force required to flatten the proton exchange membrane can be measured by the weight of the pulling unit. By fastening the pressure cap to the raised frame, the proton exchange membrane on the flattening frame is taut against the outer wall of the raised frame. Removing the pulling unit and the pressure cap allows for coating tests or flatness measurements. This flattening fixture has a simple structure, low cost, and convenient operation. It provides good flattening effect for the proton exchange membrane, facilitates coating tests and flatness measurements, and improves the testing and measurement accuracy of the proton exchange membrane. Attached Figure Description

[0010] Figure 1 A schematic diagram of an existing proton exchange membrane structure that needs to be flattened;

[0011] Figure 2 This is an exploded view of the flattening tooling of this utility model;

[0012] Figure 3 This is a schematic diagram of the flattening frame structure of this utility model;

[0013] Figure 4 This is a schematic diagram of the tension unit structure of this utility model;

[0014] Figure 5 This is a cross-sectional view of the tensioning unit of this utility model;

[0015] Figure 6 This is a side view of the movable magnetic suction plate of this utility model;

[0016] Figure 7 This is a schematic diagram of the structure of this utility model in use.

[0017] In the diagram: 1. Tooling base plate; 2. Roller support; 3. Flattening roller; 4. Positioning column; 41. Positioning convex shaft; 5. Flattening frame; 51. Raised frame; 52. Extension arm; 53. Positioning hole; 6. Pulling unit; 61. Pulling base plate; 611. Receiving groove; 62. Fixed magnetic suction plate; 63. Movable magnetic suction plate; 64. Tightening bolt; 65. Hook; 66. Weight; 7. Pressure cap; 800. Proton exchange membrane; 801. Pulling edge. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example

[0019] Please see Figure 2-3 and Figure 7 This utility model provides a technical solution: a proton exchange membrane flattening fixture, including flattening rollers 3 and flattening frames 5 mounted on a fixture base plate 1. Roller supports 2 are fixedly mounted on all four periphery of the top surface of the fixture base plate 1. Each roller support 2 has a horizontally arranged flattening roller 3, and adjacent flattening rollers 3 are perpendicular to each other. Multiple positioning columns 4 for supporting the flattening frame 5 are vertically mounted on the top surface of the fixture base plate 1, and the flattening frame 5 is located at the center of the multiple flattening rollers 3. The flattening frame 5 has a frame structure. The inner circumference of the top surface of the flattening frame 5 is provided with a raised frame 51. In this embodiment, both the flattening frame 5 and the raised frame 51 are square frame structures. A pressure cover 7 is placed on the flattening frame 5. The annular stop at the bottom opening of the pressure cover 7 is adapted to the structure of the raised frame 51. The pressure cover 7 is fastened to the raised frame 51, and the bottom surface of the annular stop at the bottom opening of the pressure cover 7 can abut against the top surface of the flattening frame 5. It also includes four traction units 6 for clamping the edge end of the proton exchange membrane 800 and providing it with traction force.

[0020] Please refer to the following: Figure 4-6The pulling unit 6 includes a pulling base plate 61. The top surface of the pulling base plate 61 is provided with a fixed magnetic plate 62 and a movable magnetic plate 63 that can magnetically adhere to each other. A receiving groove 611 is formed at the bottom end of the corresponding movable magnetic plate 63 on the top surface of the pulling base plate 61, and the movable magnetic plate 63 is slidably nested within the receiving groove 611 along its magnetic attraction direction. Sliding protrusions are provided at both ends of the movable magnetic plate 63, and sliding grooves adapted to the sliding protrusions are formed on both sides of the receiving groove 611. A tightening bolt 64 is threadedly connected to one side wall of the pulling base plate 61 corresponding to the fixed magnetic plate 62. The tightening bolt 64 is perpendicular to the movable magnetic plate 63, and its end penetrates into the receiving groove 611 and abuts against the magnetic surface of the movable magnetic plate 63. A hook 65 is provided at the center of the bottom surface of the pulling base plate 61, and a weight 66 is hung on the hook 65.

[0021] In use: Place the proton exchange membrane 800 on the raised frame 51 of the flattening frame 5, and let each pull edge 801 of the proton exchange membrane 800 rest on its corresponding flattening roller 3, with the end of each pull edge 801 located below the flattening roller 3; use a clamping device consisting of a fixed magnetic suction plate 62 and a movable magnetic suction plate 63 to hold the pull edges 801, place the pull edges 801 between the movable magnetic suction plate 63 and the fixed magnetic suction plate 62, and tighten the tightening bolt 64 to release the tension on the movable magnetic suction plate 63. The movable magnetic suction plate 63 and the fixed magnetic suction plate 62 will then magnetically adhere to each other, clamping the proton exchange membrane 800; follow the above method to clamp each pull edge 801 of the proton exchange membrane 800 sequentially with the pulling unit 6, and use the weight of the pulling unit 6 to clamp each pull edge 801. The edge 801 is pulled to bring the proton exchange membrane 800 to a tensioned and flattened state at the corresponding position on the flattening frame 5. The traction force on the pulling edge 801 is increased by attaching weights 66, which further flattens the proton exchange membrane 800. The traction force that brings the proton exchange membrane 800 to a flattened state can be measured by the weight of the pulling base plate 61, the fixed magnetic suction plate 62 and the movable magnetic suction plate 63, as well as the weight of the attached weights 66. Then, the pressure cap 7 is fastened and pressed onto the raised frame 51, so that the proton exchange membrane 800 on the flattening frame 5 is taut on the outer wall of the raised frame 51. The pulling unit 6 is removed, the flattening frame 5 and the proton exchange membrane 800 are taken out and transported to the coating test bench or measuring platform. After removing the pressure cap 7, the coating test or flatness measurement can be performed.

[0022] Furthermore, the tooling base plate 1 is vertically provided with four positioning columns 4 on its top surface, and the positioning columns 4 are respectively located at the four corners of the top surface of the tooling base plate 1. The top of the positioning column 4 is also provided with a positioning convex shaft 41. The flattening frame 5 is provided with an extension arm 52 at each of its four corners. The end of the extension arm 52 is vertically provided with a positioning hole 53, and the positioning hole 53 of the extension arm 52 can be nested on the corresponding positioning convex shaft 41. The bottom surface of the extension arm 52 abuts and fits against the stepped surface at the top of the positioning column 4. The flattening frame 5 is positioned and supported by the positioning columns 4 and the positioning convex shaft 41.

[0023] The proton exchange membrane flattening fixture disclosed in this embodiment has each pull edge 801 of the proton exchange membrane 800 resting on its corresponding flattening roller 3. The pull edges 801 are pulled by the weight of the pull base plate 61, the fixed magnetic plate 62, and the movable magnetic plate 63, as well as the weight of the hanging weight 66, thus placing the proton exchange membrane 800 in a tensioned and flattened state at its corresponding position on the flattening frame 5. The traction force required to flatten the proton exchange membrane 800 can be measured by the weight of the pull unit 6. The pressure cap 7 is fastened and pressed onto the raised frame 51, tautly securing the proton exchange membrane 800 on the outer wall of the raised frame 51. Removing the pull unit 6 and the pressure cap 7 allows for coating tests or flatness measurements. This flattening fixture has a simple structure, is easy to operate, provides good flattening of the proton exchange membrane 800, facilitates coating tests and flatness measurements, and improves the testing and measurement accuracy of the proton exchange membrane 800.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A proton exchange membrane flattening fixture, comprising a flattening roller and a flattening frame disposed on a fixture base plate, characterized in that: Roller supports are fixedly installed on all four perimeters of the top surface of the tooling base plate. Horizontally arranged flattening rollers are installed on each roller support, and adjacent flattening rollers are perpendicular to each other. The top surface of the tooling base plate is vertically provided with multiple positioning columns for supporting the flattening frame, and the flattening frame is located at the center of the multiple flattening rollers. The flattening frame has a frame structure, with a raised frame on the inner circumference of the top surface of the flattening frame. A pressure cap is placed on the flattening frame, and the annular stop at the bottom opening of the pressure cap is adapted to the structure of the raised frame. The pressure cap is fastened to the raised frame. It also includes four traction units for clamping the edge of the proton exchange membrane and providing it with tension.

2. The proton exchange membrane flattening fixture according to claim 1, characterized in that: Both the flattening frame and the raised frame are square frame structures, and the bottom surface of the annular retaining edge at the bottom opening of the pressure cap can abut against the top surface of the flattening frame.

3. The proton exchange membrane flattening fixture according to claim 1, characterized in that: The tooling base plate has four vertically positioned columns on its top surface, and the positioning columns are respectively located at the four corners of the top surface of the tooling base plate. The top of the positioning column is also provided with a positioning convex shaft. The flattening frame is provided with an extension arm at each of its four corners. The end of each extension arm is provided with a vertically positioned hole, and the positioning hole of the extension arm can be nested on the corresponding positioning convex shaft.

4. The proton exchange membrane flattening fixture according to claim 1, characterized in that: The traction unit includes a traction base plate. The top surface of the traction base plate is provided with a fixed magnetic suction plate and a movable magnetic suction plate that can be magnetically attached to each other. The top surface of the traction base plate is provided with a receiving groove at the bottom end of the corresponding movable magnetic suction plate, and the movable magnetic suction plate is nested in the receiving groove along its magnetic attraction direction. A tightening bolt is threadedly connected to one side wall of the traction base plate corresponding to the fixed magnetic suction plate. The tightening bolt is perpendicular to the movable magnetic suction plate, and the end of the tightening bolt penetrates into the receiving groove and abuts against the magnetic attraction surface of the movable magnetic suction plate.

5. The proton exchange membrane flattening fixture according to claim 4, characterized in that: A hook is provided at the center of the bottom surface of the traction base plate, and a weight is hung on the hook.

Images