Electrolytic water film electrode positioning and assembling device

Abstract

This invention provides a positioning and assembly device for water electrolysis membrane electrodes, relating to the field of electrode assembly and positioning technology. It includes a workbench with a vacuum adsorption assembly. A linear motion mechanism is located on one side of the vacuum adsorption assembly, and a lifting mechanism is located at the output end of the linear motion mechanism. A vacuum suction cup mounting frame is located at the output end of the lifting mechanism, and several vacuum suction cups are mounted on the vacuum suction cup mounting frame. The vacuum adsorption assembly includes a fixed positioning block and an adjustable positioning component. This invention achieves precise positioning of the water electrolysis membrane electrodes, ensuring accurate positioning during assembly. This lays the foundation for subsequent assembly and normal operation of the water electrolysis equipment, and helps improve the assembly quality and efficiency of the water electrolysis membrane electrodes. This invention enables automated operation, reducing the difficulty and labor intensity of manual operation and improving assembly efficiency.

Description

Technical Field

[0001] This utility model mainly relates to the field of electrode assembly and positioning technology, specifically to an electrolytic water membrane electrode positioning and assembly device. Background Technology

[0002] With the global trend towards a clean energy transition, water electrolysis for hydrogen production has become a key link connecting the renewable energy and hydrogen energy industry chains due to its advantages such as high efficiency, environmental friendliness, and high product purity. The membrane electrode assembly (MEA), as a core component of water electrolysis equipment, is composed of a proton exchange membrane, a catalyst layer, and a gas diffusion layer. Its assembly precision directly affects the operating efficiency, stability, and lifespan of the electrolyzer. Therefore, precise positioning control of the MEA during assembly is one of the core factors determining the performance of water electrolysis equipment.

[0003] The assembly of membrane electrode assemblies (MEAs) requires precise alignment with components such as electrode plates and sealing rings; otherwise, problems such as electrolyte leakage, uneven current distribution, and decreased catalyst activity may occur, and in severe cases, even MEA breakdown and equipment shutdown may result. Traditional MEA assembly relies heavily on manual operation, using visual alignment or simple tooling for positioning, which has the following significant drawbacks: First, manual positioning is inefficient and cannot meet the needs of mass production; second, positioning accuracy is greatly affected by the operator's skill and fatigue, resulting in large error fluctuations; third, the thin and light nature of the MEA makes it easy to wrinkle and break during manual handling, leading to a high scrap rate.

[0004] To address the pain points of manual assembly, the industry is gradually adopting semi-automatic or automatic positioning devices. Early automated devices mostly used mechanical grippers in conjunction with vision positioning systems, using cameras to identify the edges of the membrane electrode assembly (MEA) for positioning. However, such devices have two limitations: firstly, the vision system is easily affected by ambient light and reflections from the MEA surface, resulting in poor positioning stability, especially prone to identification errors in mass production; secondly, the rigid gripping of the mechanical grippers can easily cause indentations on the edges of the MEA, damaging the catalyst layer structure and affecting its electrochemical performance.

[0005] In addition, the lack of compatibility of existing positioning devices is also a prominent problem. The membrane electrode sizes of different models of water electrolysis equipment vary greatly, and traditional devices require the replacement of positioning fixtures to adapt to different specifications of products, which seriously restricts the flexibility of the production line. Utility Model Content

[0006] 1. The technical problem to be solved by the utility model:

[0007] This invention provides an electrolytic water membrane electrode positioning and assembly device to solve the technical problems existing in the background art.

[0008] 2. Technical Solution:

[0009] To achieve the above objectives, the technical solution provided by this utility model is as follows: an electrolytic water membrane electrode positioning and assembly device, comprising a workbench, a vacuum adsorption component on the workbench, a linear motion mechanism on one side of the vacuum adsorption component, a lifting mechanism on the output end of the linear motion mechanism, a vacuum suction cup mounting frame on the output end of the lifting mechanism, a plurality of vacuum suction cups mounted on the vacuum suction cup mounting frame, a fixed positioning block and an adjustable positioning component on the vacuum adsorption component, the linear motion mechanism and the lifting mechanism picking up the membrane electrode body through the vacuum suction cups and transferring the membrane electrode body to the vacuum adsorption component.

[0010] Preferably, the vacuum adsorption assembly includes a base fixed on the worktable, two vacuum adsorption stages are spaced apart on the base, and an installation groove for mounting a fixed positioning block and an adjustable positioning assembly is formed between the base and the two vacuum adsorption stages.

[0011] Preferably, a plurality of positioning holes 1 are provided on the bottom of the mounting groove, a connecting piece is fixedly installed on the lower end of the fixed positioning block, and a positioning hole 2 is provided on the connecting piece to cooperate with the positioning hole 1. The positioning hole 1 and the positioning hole 2 are connected and fixed by a positioning pin.

[0012] Preferably, the adjustable positioning component includes a positioning cylinder fixed in the mounting groove, the piston rod of the positioning cylinder is fixedly connected to a movable support, the movable support is slidably installed in the mounting groove, and a movable positioning block is provided on the side of the movable support away from the positioning cylinder.

[0013] Preferably, the movable positioning block and the movable support are arranged parallel to each other. Two guide shafts are fixedly installed on the movable positioning block, and two linear bearings are fixedly installed on the movable support. Each guide shaft is slidably installed in one of the linear bearings. A spring is sleeved on the guide shaft. One end of the spring is fixedly connected to the movable positioning block, and the other end is fixedly connected to the linear bearing. A limit sleeve is concentrically fixed at the end of the linear bearing away from the movable positioning block.

[0014] Preferably, the cylinder body of the positioning cylinder has a positioning hole three, and the positioning hole three is connected and fixed to the positioning hole one by a positioning pin.

[0015] Preferably, the lifting mechanism includes a mounting frame fixedly installed on the output end of the linear motion mechanism, a lifting cylinder fixedly installed on the mounting frame, a lifting block fixedly installed on the output end of the lifting cylinder, a slider fixedly installed on the lifting block, a guide rail vertically installed on the mounting frame, the slider sliding up and down on the guide rail, and the lifting block connected to the vacuum suction cup mounting frame through a connecting frame.

[0016] 3. Beneficial effects:

[0017] Compared with the prior art, the technical solution provided by this utility model has the following advantages:

[0018] This invention achieves precise positioning of the water electrolysis membrane electrode, ensuring accurate placement during assembly and laying the foundation for subsequent assembly and normal operation of the water electrolysis equipment. It also helps improve the assembly quality and efficiency of the water electrolysis membrane electrode. This invention boasts high positioning accuracy; through the cooperation of a fixed positioning block and an adjustable positioning component, it can precisely position membrane electrodes of different sizes and shapes. Simultaneously, the vacuum adsorption stage firmly adsorbs the membrane electrode, reducing positioning errors.

[0019] This invention is highly adaptable. The positioning cylinder in the adjustable positioning component can drive the movable positioning block to move, which can adapt to the positioning requirements of various specifications of membrane electrodes without replacing a large number of parts, thus improving the versatility of the device.

[0020] This invention is easy to operate. Through the control of components such as linear motion mechanism, lifting cylinder and positioning cylinder, it can realize automated operation, reduce the difficulty and labor intensity of manual operation, and improve assembly efficiency. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the overall structure of this utility model from another angle;

[0023] Figure 3 This is a schematic diagram of the vacuum adsorption component structure of this utility model;

[0024] Figure 4 This is a schematic diagram of the adjustable positioning component structure of this utility model;

[0025] Figure 5 This is a schematic diagram of the lifting mechanism structure of this utility model;

[0026] Figure 6 This is a schematic diagram of the vacuum suction cup mounting bracket structure of this utility model.

[0027] Figure label:

[0028] 1. Workbench; 2. Vacuum adsorption assembly; 21. Base; 22. Vacuum adsorption stage; 23. Mounting slot; 24. Positioning hole one; 3. Fixed positioning block; 31. Connecting piece; 32. Positioning hole two; 4. Adjustable positioning assembly; 41. Positioning cylinder; 42. Movable support; 43. Movable positioning block; 44. Guide shaft; 45. Spring; 46. Linear bearing; 47. Limit sleeve; 48. Positioning hole three; 5. Linear motion mechanism; 6. Lifting mechanism; 61. Mounting bracket; 62. Lifting cylinder; 63. Lifting block; 64. Slider; 65. Guide rail; 66. Connecting bracket; 7. Vacuum suction cup mounting bracket; 8. Vacuum suction cup; 9. Membrane electrode body. Detailed Implementation

[0029] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, which show several embodiments of the utility model. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the utility model will be more thorough and complete.

[0030] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "page", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0032] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," and "equipped with" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0033] It should be noted that the structures not described in this utility model are the same as or can be implemented using existing technology, and will not be elaborated here, as they do not involve the design points and improvement directions of this utility model. Example

[0034] See attached document Figures 1-6 An electrolytic water membrane electrode positioning and assembly device includes a workbench 1, a vacuum adsorption component 2 on the workbench 1, a linear motion mechanism 5 on one side of the vacuum adsorption component 2, a lifting mechanism 6 on the output end of the linear motion mechanism 5, a vacuum suction cup mounting frame 7 on the output end of the lifting mechanism 6, a plurality of vacuum suction cups 8 mounted on the vacuum suction cup mounting frame 7, a fixed positioning block 3 and an adjustable positioning component 4 on the vacuum adsorption component 2, the linear motion mechanism 5 and the lifting mechanism 6 pick up the membrane electrode body 9 through the vacuum suction cups 8 and transfer the membrane electrode body 9 to the vacuum adsorption component 2.

[0035] The vacuum adsorption assembly 2 includes a base 21 fixed on the worktable 1, and two vacuum adsorption stages 22 are spaced apart on the base 21. An installation groove 23 is formed between the base 21 and the two vacuum adsorption stages 22 for installing the fixed positioning block 3 and the adjustable positioning assembly 4.

[0036] The bottom of the mounting slot 23 has several positioning holes 24. The lower end of the fixed positioning block 3 is fixedly installed with a connecting piece 31. The connecting piece 31 has a positioning hole 32 that matches the positioning hole 24. The positioning hole 24 and the positioning hole 32 are connected and fixed by a positioning pin.

[0037] The adjustable positioning assembly 4 includes a positioning cylinder 41 fixed in the mounting groove 23. The piston rod of the positioning cylinder 41 is fixedly connected to a movable support 42, which is slidably installed in the mounting groove 23. A movable positioning block 43 is provided on the side of the movable support 42 away from the positioning cylinder 41. The movable positioning block 43 is arranged parallel to the movable support 42. Two guide shafts 44 are fixedly installed on the movable positioning block 43, and two linear bearings 46 are fixedly installed on the movable support 42. Each guide shaft 44 is slidably installed in one linear bearing 46. A spring 45 is sleeved on the guide shaft 44. One end of the spring 45 is fixedly connected to the movable positioning block 43, and the other end is fixedly connected to the linear bearing 46. A limit sleeve 47 is concentrically fixed on the end of the linear bearing 46 away from the movable positioning block 43. A positioning hole 3 48 is opened on the cylinder body of the positioning cylinder 41, and the positioning hole 3 48 is connected and fixed to the positioning hole 1 24 by a positioning pin.

[0038] The lifting mechanism 6 includes a mounting bracket 61 fixedly installed on the output end of the linear motion mechanism 5. A lifting cylinder 62 is fixedly installed on the mounting bracket 61, and a lifting block 63 is fixedly installed on the output end of the lifting cylinder 62. A slider 64 is fixedly installed on the lifting block 63. A guide rail 65 is vertically installed on the mounting bracket 61, and the slider 64 slides up and down on the guide rail 65. The lifting block 63 is connected to the vacuum suction cup mounting bracket 7 through a connecting bracket 66. The cooperation between the guide rail 65 and the slider 64 in the lifting mechanism 6, as well as the cooperation between the linear bearing 46 and the guide shaft 44 in the adjustable positioning assembly 4, makes the device more stable during operation and reduces the impact of factors such as shaking on the positioning accuracy.

[0039] Working principle:

[0040] The fixed positioning block 3 is fixed to the positioning hole 24 of the mounting groove 23 by a positioning pin, forming a reference positioning edge. The positioning cylinder 41 is fixed to the positioning hole 24 by a positioning pin, thus fixing the position of the positioning cylinder 41.

[0041] The linear motion mechanism 5 drives the lifting mechanism 6 to move horizontally, aligning several vacuum suction cups 8 on the vacuum suction cup mounting frame 7 with the membrane electrode assembly 9 to be retrieved. The piston rod of the lifting cylinder 62 of the lifting mechanism 6 retracts, pulling the lifting block 63 downwards along the guide rail 65. The slider 64 cooperates with the guide rail 65 to ensure stability, causing the vacuum suction cup mounting frame 7 and the vacuum suction cups 8 to descend synchronously. When the vacuum suction cups 8 contact the surface of the membrane electrode assembly 9, the vacuum system activates, generating negative pressure within the suction cups to firmly adhere to the membrane electrode assembly 9. The piston rod of the lifting cylinder 62 extends, causing the vacuum suction cups 8 with the membrane electrode assembly 9 adsorbed to rise back to their initial height.

[0042] The linear motion mechanism 5 restarts, driving the lifting mechanism 6, the vacuum suction cup mounting bracket 7, and the adsorbed membrane electrode body 9 to move horizontally until the membrane electrode body 9 reaches directly above the vacuum adsorption assembly 2, i.e., the positioning area between the two vacuum adsorption stages 22. The lifting mechanism 6 lowers the membrane electrode body 9, bringing it close to the surface of the vacuum adsorption stage 22, while the vacuum suction cup 8 releases negative pressure, separating from the membrane electrode body 9. The lifting cylinder 62 drives the vacuum suction cup mounting bracket 7 to rise and reset, and the linear motion mechanism 5 drives it back to the initial picking position, ready for the next pick-up.

[0043] Adjustable positioning component 4 operates as follows: Positioning cylinder 41 is vented, piston rod extends, pushing movable support 42 to slide along mounting groove 23, causing movable positioning block 43 to move closer to membrane electrode body 9. When movable positioning block 43 contacts the edge of membrane electrode body 9, guide shaft 44 slides along linear bearing 46, spring 45 is compressed, generating elastic thrust, ensuring movable positioning block 43 tightly fits the edge of membrane electrode body 9, while preventing rigid collisions that could damage the membrane electrode. Limiting sleeve 47 restricts the maximum sliding distance of guide shaft 44, preventing excessive compression of spring 45.

[0044] Reference fit: The other side of the membrane electrode body 9 is fitted with the positioning edge of the fixed positioning block 3. Under the combined action of the fixed positioning block 3 (reference edge) and the movable positioning block 43 (elastic thrust edge), the membrane electrode body 9 is precisely positioned in the preset position.

[0045] Positioning complete: Positioning cylinder 41 maintains thrust, movable positioning block 43 maintains positioning pressure on the membrane electrode, and vacuum adsorption stage 22 continues adsorption to ensure the membrane electrode's stable position in subsequent assembly processes. After positioning is complete, vacuum adsorption stage 22 is activated, using negative pressure to fix the membrane electrode body 9 onto the stage surface.

[0046] Cyclic operation: After positioning is completed, if continuous assembly is required, device 1 repeats the above "absorption-transfer-placement-positioning" process to realize the automated positioning and assembly of batch membrane electrodes.

[0047] The above-described embodiments are merely illustrative of certain implementations of this utility model, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An electrolytic water membrane electrode positioning and assembly device, comprising a workbench (1), characterized in that: The workbench (1) is provided with a vacuum adsorption assembly (2). A linear motion mechanism (5) is provided on one side of the vacuum adsorption assembly (2). A lifting mechanism (6) is provided on the output end of the linear motion mechanism (5). A vacuum suction cup mounting frame (7) is provided on the output end of the lifting mechanism (6). Several vacuum suction cups (8) are installed on the vacuum suction cup mounting frame (7). A fixed positioning block (3) and an adjustable positioning assembly (4) are provided on the vacuum adsorption assembly (2). The linear motion mechanism (5) and the lifting mechanism (6) pick up the membrane electrode body (9) through the vacuum suction cups (8) and transfer the membrane electrode body (9) to the vacuum adsorption assembly (2).

2. The electrolytic water membrane electrode positioning and assembly device according to claim 1, characterized in that: The vacuum adsorption assembly (2) includes a base (21) fixed on the worktable (1), and two vacuum adsorption stages (22) are spaced apart on the base (21). An installation groove (23) for installing a fixed positioning block (3) and an adjustable positioning assembly (4) is formed between the base (21) and the two vacuum adsorption stages (22).

3. The electrolytic water membrane electrode positioning and assembly device according to claim 2, characterized in that: The bottom of the mounting groove (23) is provided with a plurality of positioning holes (24). A connecting piece (31) is fixedly installed at the lower end of the fixed positioning block (3). The connecting piece (31) is provided with positioning holes (32) that cooperate with the positioning holes (24). The positioning holes (24) and the positioning holes (32) are connected and fixed by positioning pins.

4. The electrolytic water membrane electrode positioning and assembly device according to claim 3, characterized in that: The adjustable positioning component (4) includes a positioning cylinder (41) fixed in the mounting groove (23). The piston rod of the positioning cylinder (41) is fixedly connected to the movable support (42). The movable support (42) is slidably installed in the mounting groove (23). A movable positioning block (43) is provided on the side of the movable support (42) away from the positioning cylinder (41).

5. The electrolytic water membrane electrode positioning and assembly device according to claim 4, characterized in that: The movable positioning block (43) and the movable support (42) are arranged in parallel. Two guide shafts (44) are fixedly installed on the movable positioning block (43). Two linear bearings (46) are fixedly installed on the movable support (42). Each guide shaft (44) is slidably installed in one of the linear bearings (46). A spring (45) is sleeved on the guide shaft (44). One end of the spring (45) is fixedly connected to the movable positioning block (43), and the other end is fixedly connected to the linear bearing (46). A limit sleeve (47) is concentrically fixed at the end of the linear bearing (46) away from the movable positioning block (43).

6. The electrolytic water membrane electrode positioning and assembly device according to claim 4, characterized in that: The positioning cylinder (41) has a positioning hole three (48) on its cylinder body, and the positioning hole three (48) is connected and fixed to the positioning hole one (24) by a positioning pin.

7. The electrolytic water membrane electrode positioning and assembly device according to claim 1, characterized in that: The lifting mechanism (6) includes a mounting bracket (61) fixedly installed on the output end of the linear motion mechanism (5). A lifting cylinder (62) is fixedly installed on the mounting bracket (61). A lifting block (63) is fixedly installed on the output end of the lifting cylinder (62). A slider (64) is fixedly installed on the lifting block (63). A guide rail (65) is vertically installed on the mounting bracket (61). The slider (64) slides up and down on the guide rail (65). The lifting block (63) is connected to the vacuum suction cup mounting bracket (7) through a connecting bracket (66).

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