Vacuum suction device and method for membrane electrode border cutting

Abstract

The application discloses a vacuum adsorption device and method for cutting membrane electrode frame, which comprises a first negative pressure chamber, a first adsorption hole in communication with the first negative pressure chamber and used for adsorbing the membrane electrode frame, a second negative pressure chamber, a second adsorption hole in communication with the second negative pressure chamber and used for adsorbing the membrane electrode, the first adsorption hole and the second adsorption hole are arranged on the same plane, and the first adsorption hole is distributed around the second adsorption hole, and a negative pressure generating unit in communication with the first negative pressure chamber and the second negative pressure chamber and capable of separately controlling generation and disappearance of negative pressure in the first negative pressure chamber and the second negative pressure chamber. The vacuum adsorption device and method for cutting membrane electrode frame of the application do not need to use additional movable parts to position the membrane electrode and the membrane electrode frame, and avoid errors caused by manual operation.

Description

Technical Field

[0001] This invention relates to the field of fuel cell manufacturing technology, and specifically to a vacuum adsorption device and method for cutting membrane electrode frames. Background Technology

[0002] A fuel cell is an energy conversion device that directly converts chemical energy into electrical energy. The basic unit of a fuel cell is a single cell composed of electrodes and a membrane electrode assembly (MEA). These single cells are stacked repeatedly, with the addition of auxiliary components, to form a fuel cell stack. To enable the MEA to be used in fuel cell assembly and application, its frame is typically cut to the required shape. When cut to the desired shape, the frame fits snugly onto the sealing ring, effectively ensuring the fuel cell's seal and facilitating assembly.

[0003] Currently, there are many processes for cutting membrane electrode frames. One method involves using a die-cutting mold, where the untreated membrane electrode is placed on the mold, secured, and then pressed down by a press to achieve the desired frame shape. Another method utilizes precision equipment such as lasers for membrane electrode cutting. This involves placing the membrane electrode on a fixture and moving the laser line according to a pre-programmed sequence on a computer, causing the line to cut the membrane electrode along a predetermined path.

[0004] Both die-cutting and laser-cutting of membrane electrodes require other moving parts to fix the position of the membrane electrode. However, the moving parts can move freely, making it difficult to accurately grasp the cutting position, resulting in poor accuracy and operability. Die-cutting of the membrane electrode frame requires manual operation, making it difficult to ensure that the membrane electrode frame is in the correct position. Furthermore, manual operation can sometimes produce errors, making it unsuitable for mass production. Summary of the Invention

[0005] The purpose of this invention is to provide a vacuum adsorption device and method for cutting membrane electrode frames, which can fix the position of the membrane electrode and the membrane electrode frame when cutting the membrane electrode frame.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solution:

[0007] A vacuum adsorption device for cutting membrane electrode frames includes: a first negative pressure chamber; a first adsorption hole communicating with the first negative pressure chamber for adsorbing the membrane electrode frame; a second negative pressure chamber; a second adsorption hole communicating with the second negative pressure chamber for adsorbing the membrane electrode; the first adsorption hole and the second adsorption hole are arranged on the same plane, and the first adsorption hole is distributed around the second adsorption hole; a negative pressure generating unit communicating with the first negative pressure chamber and the second negative pressure chamber, capable of independently controlling the generation and disappearance of negative pressure in the first negative pressure chamber and the second negative pressure chamber.

[0008] Preferably, the vacuum adsorption device includes: a first part and a second part, wherein a groove is provided on one side of the first part and a U-shaped sealing ring is provided on one side of the second part, and the groove and the U-shaped sealing ring are fastened together to form a first negative pressure chamber and a second negative pressure chamber.

[0009] Furthermore, both the first adsorption pore and the second adsorption pore are disposed on the other side of the first component, and both the first adsorption pore and the second adsorption pore include a plurality of mesh-like small holes.

[0010] Furthermore, the first adsorption hole and the second adsorption hole are separated by a U-shaped sealing ring.

[0011] Furthermore, the first and second parts are positioned and assembled through positioning holes located at the corners.

[0012] Furthermore, the second part is equipped with a gripping section.

[0013] Furthermore, the negative pressure generating unit includes an air pump and a connecting pipe. The second part is provided with a first exhaust port communicating with the first negative pressure chamber and a second exhaust port communicating with the second negative pressure chamber. The first exhaust port and the second exhaust port are connected to the air pump through the connecting pipe. Both the first exhaust port and the second exhaust port are provided with control switches.

[0014] Furthermore, the second part has a first exhaust port and two second exhaust ports, and the connecting pipe includes a four-way pipe, through which the first exhaust port and the second exhaust port are connected to the air pump.

[0015] A vacuum adsorption method for cutting membrane electrode frames, using the aforementioned vacuum adsorption device, includes: a negative pressure generating unit controlling a negative pressure to be generated in a second negative pressure chamber, and adsorbing the membrane electrode through a second adsorption hole communicating with the second negative pressure chamber; a negative pressure generating unit controlling a negative pressure to be generated in a first negative pressure chamber, and adsorbing the membrane electrode frame through a first adsorption hole communicating with the first negative pressure chamber; a negative pressure generating unit controlling the first negative pressure chamber to lose negative pressure, and the first adsorption hole losing its adsorption function on the membrane electrode frame; and a negative pressure generating unit controlling the second negative pressure chamber to lose negative pressure, and the second adsorption hole losing its adsorption function on the membrane electrode.

[0016] The present invention has the following beneficial effects:

[0017] In the process of using this invention, firstly, the negative pressure generating unit controls the generation of negative pressure in the second negative pressure chamber, and the membrane electrode is adsorbed through the second adsorption hole connected to the second negative pressure chamber. Then, the negative pressure generating unit controls the generation of negative pressure in the first negative pressure chamber, and the membrane electrode frame is adsorbed through the first adsorption hole connected to the first negative pressure chamber, thereby fixing the position of the membrane electrode and the membrane electrode frame. After the membrane electrode frame is cut, the negative pressure generating unit controls the first negative pressure chamber to lose negative pressure, and the first adsorption hole loses its adsorption effect on the membrane electrode frame. The negative pressure generating unit controls the second negative pressure chamber to lose negative pressure, and the second adsorption hole loses its adsorption effect on the membrane electrode, thereby achieving the separation of the membrane electrode and the membrane electrode frame.

[0018] The vacuum adsorption device and method for cutting membrane electrode frames according to the present invention eliminates the need for additional moving parts to position the membrane electrode and membrane electrode frame, thus avoiding errors caused by manual operation. Attached Figure Description

[0019] To more clearly illustrate the technical solution of the present invention, the accompanying drawings used in the description will be briefly introduced below. Obviously, the drawings described below are one embodiment of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort:

[0020] Figure 1 This is a schematic diagram of the overall structure of a vacuum adsorption device for cutting membrane electrode frames according to an embodiment of the present invention.

[0021] Figure 2 This is a top view of the second component provided in an embodiment of the present invention;

[0022] Figure 3 This is a schematic flowchart of a vacuum adsorption method for cutting the frame of a membrane electrode, provided in an embodiment of the present invention.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1: First negative pressure chamber;

[0025] 2: First adsorption pore;

[0026] 3: Second negative pressure chamber;

[0027] 4: Second adsorption pore;

[0028] 5: Negative pressure generation unit;

[0029] 510: Vacuum pump;

[0030] 520: Connecting pipe;

[0031] 6: First component;

[0032] 7: Second part;

[0033] 710: A U-shaped sealing ring;

[0034] 720: Grab slot;

[0035] 701: First exhaust port;

[0036] 702: Second exhaust port;

[0037] 8: Positioning hole. Detailed Implementation

[0038] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become clearer from the following description. It should be noted that the drawings are in a very simplified form and use non-precise proportions, used only to facilitate and clearly illustrate the embodiments of the present invention. Please refer to the drawings to make the objectives, features, and advantages of the present invention more apparent and understandable. It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the implementation conditions of the present invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to the size, without affecting the effects and objectives achieved by the present invention, should still fall within the scope of the technical content disclosed in the present invention.

[0039] Typically, a vacuum adsorption platform has only one chamber and can only control the adsorption of objects in one area onto the vacuum platform. By arranging vacuum platforms in multiple positions to facilitate the normal handling of objects, if the object is placed statically under other positioning devices, it may cause the object's edges to curl or the corners to be bent, resulting in the object's flatness not meeting the requirements.

[0040] like Figure 1 and Figure 2 As shown, this embodiment provides a vacuum adsorption device for cutting membrane electrode frames, including: a first negative pressure chamber 1; a first adsorption hole 2, connected to the first negative pressure chamber 1, for adsorbing the membrane electrode frame; a second negative pressure chamber 3; a second adsorption hole 4, connected to the second negative pressure chamber 3, for adsorbing the membrane electrode; the first adsorption hole 2 and the second adsorption hole 4 are arranged on the same plane, and the first adsorption hole 2 is distributed around the second adsorption hole 4; a negative pressure generating unit 5, connected to the first negative pressure chamber 1 and the second negative pressure chamber 3, capable of independently controlling the generation and disappearance of negative pressure in the first negative pressure chamber 1 and the second negative pressure chamber 3.

[0041] In this embodiment, during use, firstly, the negative pressure generating unit 5 controls the generation of negative pressure in the second negative pressure chamber 3, and the membrane electrode is adsorbed through the second adsorption hole 4 connected to the second negative pressure chamber 3, adjusting the position of the membrane electrode frame. Then, the negative pressure generating unit 5 controls the generation of negative pressure in the first negative pressure chamber 1, and the membrane electrode frame is adsorbed through the first adsorption hole 2 connected to the first negative pressure chamber 1, thereby fixing the position of the membrane electrode and the membrane electrode frame. After the membrane electrode frame is cut, the negative pressure generating unit 5 controls the first negative pressure chamber 1 to lose negative pressure, and the first adsorption hole 2 loses its adsorption effect on the membrane electrode frame. Similarly, the negative pressure generating unit 5 controls the second negative pressure chamber 3 to lose negative pressure, and the second adsorption hole 4 loses its adsorption effect on the membrane electrode, thereby achieving the separation of the membrane electrode and the membrane electrode frame.

[0042] The vacuum adsorption device and method for cutting membrane electrode frames according to this embodiment eliminates the need for additional moving parts to position the membrane electrode and its frame, avoiding errors caused by manual operation. Furthermore, since the first adsorption hole 2 and the second adsorption hole 4 are located on the same plane, the flatness of the adsorbed membrane electrode and its frame meets the requirements.

[0043] like Figure 1 and Figure 2 As shown, in a preferred embodiment, the vacuum adsorption device includes a first split body 6 and a second split body 7. A groove is provided on one side of the first split body 6, and a U-shaped sealing ring 710 is provided on one side of the second split body 7. The groove and the U-shaped sealing ring 710 are engaged to form a first negative pressure chamber 1 and a second negative pressure chamber 3. The split-body design facilitates the processing and assembly of the device. In this embodiment, the first split body 6 and the second split body 7 are formed by sheet metal stamping or die forming.

[0044] Specifically, in this embodiment, both the first adsorption hole 2 and the second adsorption hole 4 are located on the other side of the first component 6, and both the first adsorption hole 2 and the second adsorption hole 4 include multiple mesh-like small holes. This arrangement can increase the contact area with the membrane electrode and the membrane electrode frame, improve the adsorption force, and make the adsorption surface flatter, avoiding warping of the membrane electrode and the membrane electrode frame during the adsorption process, thus improving the positioning accuracy.

[0045] More specifically, in this embodiment, the first adsorption hole 2 and the second adsorption hole 4 are separated by a U-shaped sealing ring 710. The U-shaped sealing ring 710 separates the first adsorption hole 2 and the second adsorption hole 4 into two independent adsorption areas, which adsorb the membrane electrode and the membrane electrode frame respectively, improving stability during processing. After cutting, it also facilitates the separation of the membrane electrode and the membrane electrode frame.

[0046] Specifically, in this embodiment, the first component 6 and the second component 7 are positioned and assembled using positioning holes 8 located at the corners. The positioning holes 8 ensure the positioning accuracy of the entire device and the airtightness of the first negative pressure chamber 1 and the second negative pressure chamber 3, thereby improving the adsorption effect.

[0047] like Figure 1 As shown, specifically, the second part 7 in this embodiment is provided with a gripping part. The gripping part facilitates the adjustment of the working position of the device. In this embodiment, the gripping part includes gripping grooves 720 provided on both sides of the second part 7.

[0048] Specifically, in this embodiment, the negative pressure generating unit 5 includes a vacuum pump 510 and a connecting pipe 520. The second split 7 is provided with a first exhaust port 701 communicating with the first negative pressure chamber 1 and a second exhaust port 702 communicating with the second negative pressure chamber 3. The first exhaust port 701 and the second exhaust port 702 are connected to the vacuum pump 510 through the connecting pipe 520. Both the first exhaust port 701 and the second exhaust port 702 are provided with control switches. In this embodiment, the control switches enable the vacuum pump 510 to exhaust air from either the first negative pressure chamber 1 or the second negative pressure chamber 3 independently, allowing the first negative pressure chamber 1 and the second negative pressure chamber 3 to operate independently.

[0049] More specifically, in this embodiment, the second component 7 is provided with a first exhaust port 701 and two second exhaust ports 702. The connecting pipe 520 includes a four-way pipe, and the first exhaust port 701 and the second exhaust ports 702 are connected to the vacuum pump 510 through the four-way pipe. Since the membrane electrode has a larger area relative to the membrane electrode frame, it requires higher adsorption force. In this embodiment, by setting the first exhaust port 701 and the two second exhaust ports 702, the second negative pressure chamber 3 generates a greater negative pressure than the first negative pressure chamber 1, thereby making the second adsorption pore 4 generate a greater suction force than the first adsorption pore 2, resulting in a more stable adsorption of the membrane electrode.

[0050] like Figure 3 As shown, this embodiment also provides a vacuum adsorption method for cutting membrane electrode frames. The adsorption is performed using the aforementioned vacuum adsorption device, comprising: S1, the negative pressure generating unit 5 controls the generation of negative pressure in the second negative pressure chamber 3, and adsorbs the membrane electrode through the second adsorption hole 4 connected to the second negative pressure chamber 3; S2, the negative pressure generating unit 5 controls the generation of negative pressure in the first negative pressure chamber 1, and adsorbs the membrane electrode frame through the first adsorption hole 2 connected to the first negative pressure chamber 1; S3, the negative pressure generating unit 5 controls the loss of negative pressure in the first negative pressure chamber 1, and the first adsorption hole 2 loses its adsorption effect on the membrane electrode frame.

[0051] S4. The negative pressure generating unit 5 controls the loss of negative pressure in the second negative pressure chamber 3, and the second adsorption pore 4 loses its adsorption effect on the membrane electrode.

[0052] In summary, the membrane electrode cutting platform of this invention, used in the seven-in-one molding of membrane electrodes, achieves regional adsorption through multiple adsorption holes, thereby enabling precise cutting of the membrane electrode to be cut according to production requirements; the first adsorption hole 2 and the second adsorption hole 4 ensure strong overall adsorption force and avoid deformation such as folding of the membrane electrode and membrane electrode frame; the U-shaped sealing ring 710 and the corresponding structural design enable independent operation and airtightness of the first negative pressure chamber 1 and the second negative pressure chamber 3; the vacuum structure design of the first negative pressure chamber 1 and the second negative pressure chamber 3 ensures the reliability of adsorption positioning.

[0053] Although the present invention has been described in detail through the preferred embodiments above, it should be understood that the above description should not be considered as a limitation of the present invention. Various modifications and substitutions to the present invention will be apparent to those skilled in the art after reading the above description. Therefore, the scope of protection of the present invention should be defined by the appended claims.

Claims

1. A vacuum adsorption device for cutting the frame of a membrane electrode, characterized in that, include: First negative pressure chamber The first adsorption hole is connected to the first negative pressure chamber and is used to adsorb the membrane electrode frame when the membrane electrode frame is cut. The second negative pressure chamber has a greater negative pressure than the first negative pressure chamber. The second adsorption hole is connected to the second negative pressure chamber and is used to adsorb the membrane electrode during the cutting of the membrane electrode frame. The first adsorption pore and the second adsorption pore are arranged on the same plane, and the first adsorption pore is distributed around the second adsorption pore; The negative pressure generating unit is connected to the first negative pressure chamber and the second negative pressure chamber, and can independently control the generation and disappearance of negative pressure in the first negative pressure chamber and the second negative pressure chamber; The vacuum adsorption device includes a first part and a second part. The first part has a groove on one side, and the second part has a U-shaped sealing ring on one side. The groove and the U-shaped sealing ring are fastened together to form the first negative pressure chamber and the second negative pressure chamber. The first adsorption hole and the second adsorption hole are both located on the other side of the first part.

2. The vacuum adsorption device as described in claim 1, characterized in that, Both the first adsorption pore and the second adsorption pore include multiple mesh-like pores.

3. The vacuum adsorption device as described in claim 2, characterized in that, The first adsorption hole and the second adsorption hole are separated by the U-shaped sealing ring.

4. The vacuum adsorption device as described in claim 1, characterized in that, The first and second parts are positioned and assembled through positioning holes located at the corners.

5. The vacuum adsorption device as described in claim 1, characterized in that, The second part is equipped with a gripping part.

6. The vacuum adsorption device as described in claim 1, characterized in that, The negative pressure generating unit includes a vacuum pump and a connecting pipe. The second part is provided with a first exhaust port communicating with the first negative pressure chamber and a second exhaust port communicating with the second negative pressure chamber. The first exhaust port and the second exhaust port are connected to the vacuum pump through the connecting pipe. Both the first exhaust port and the second exhaust port are provided with control switches.

7. The vacuum adsorption device as described in claim 6, characterized in that, The second part has a first exhaust port and two second exhaust ports. The connecting pipe includes a four-way pipe. The first exhaust port and the second exhaust port are connected to the air pump through the four-way pipe.

8. A vacuum adsorption method for cutting membrane electrode frames, comprising using the vacuum adsorption apparatus as described in any one of claims 1-7, characterized in that, include: The negative pressure generating unit controls the generation of negative pressure in the second negative pressure chamber, and adsorbs the membrane electrode through the second adsorption hole connected to the second negative pressure chamber; The negative pressure generating unit controls the generation of negative pressure in the first negative pressure chamber, and adsorbs the membrane electrode frame through the first adsorption hole connected to the first negative pressure chamber. The negative pressure generating unit controls the first negative pressure chamber to lose negative pressure, and the first adsorption hole loses its adsorption effect on the membrane electrode frame. The negative pressure generating unit controls the second negative pressure chamber to lose negative pressure, and the second adsorption pore loses its adsorption effect on the membrane electrode.

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