A proton exchange membrane bonding machine and its control method

Abstract

This invention discloses a proton exchange membrane (PEM) bonding machine and its control method, comprising a carrying mechanism, a flipping mechanism, and a coating mechanism. The carrying mechanism places the PEM to be transferred entirely on its upper surface. The flipping mechanism flips the PEM from the carrying mechanism to the upper surface of the coating mechanism. The coating mechanism includes a coating box, a coating assembly, and a coating plate. The coating assembly includes a transverse fixing frame, a roller brush, and a lead screw, enabling the fixing frame to reciprocate along the extension direction of the lead screw. Simultaneously, the roller brush is positioned above the fixing frame, contacting the lower end face of the coating plate. The coating plate has evenly distributed through holes, and a negative pressure adsorption assembly is externally connected below the coating box. The entire device ensures that the roller brush contacts the lower end face of the coating plate, thereby completely adhering the PEM from the carrying mechanism to the coating plate of the coating mechanism, reducing the generation of air bubbles during the transfer process and improving bonding efficiency.

Description

Technical Field

[0001] This invention belongs to the technical field of proton exchange membrane bonding machines, specifically relating to a proton exchange membrane bonding machine and its control method. Background Technology

[0002] New energy vehicles, as the main direction of current automotive development, have a promising market prospect, and using battery power as a power source to replace fossil fuels is the main development direction of new energy vehicles.

[0003] The proton exchange membrane is the core component of a proton membrane fuel cell. It is a very thin membrane in the middle that cannot conduct electrons. It is an excellent conductor of hydrogen ions and plays a key role in the performance of the cell. In the fuel cell, it can provide hydrogen ion channels for the electrolyte. On both sides of the membrane are gas electrodes, which are composed of carbon paper and catalyst. They can also be used as a separator to isolate the reacting gases at the two electrodes.

[0004] Chinese patent application CN200510018749.X discloses a composite proton exchange membrane for high-temperature proton exchange membrane fuel cells. This proton exchange membrane exhibits good resistance to reactive permeation and high mechanical properties, achieving a tensile strength greater than 25 MPa. Due to these characteristics, the membrane possesses a certain degree of adhesion. To avoid unnecessary wear and dust accumulation during assembly, the transfer of the proton exchange membrane must be carried out in a dust-free environment. This prevents airborne dust and other fine particles from adhering to the proton exchange membrane and affecting its performance. During transfer, the proton exchange membrane needs to be completely attached to an attachment plate. Traditional attachment plates, due to the large spacing between adsorption pores, are prone to generating unnecessary air bubbles between adjacent adsorption pores during transfer (the proton exchange membrane is relatively light and easily adhered). Furthermore, this manual attachment method is prone to positional deviations and low attachment efficiency. Summary of the Invention

[0005] To address the shortcomings of existing technologies, the present invention aims to provide a proton exchange membrane bonding machine and its control method, thereby solving the aforementioned technical problems in the prior art.

[0006] The objective of this invention can be achieved through the following technical solutions:

[0007] A proton exchange membrane bonding machine includes a carrying mechanism, a coating mechanism, and a flipping mechanism. The upper surface of the carrying mechanism is provided with negative pressure adsorption holes. The proton exchange membrane to be transferred is placed on the upper surface of the carrying mechanism. The flipping mechanism flips the proton exchange membrane on the carrying mechanism to the upper surface of the coating mechanism. The flipping mechanism is set independently from the carrying mechanism and the coating mechanism.

[0008] The coating mechanism includes a coating box, a coating assembly placed inside the coating box, and a coating plate disposed on the upper surface of the coating box. The coating assembly includes a transverse fixing frame, a roller brush, and a lead screw. The lead screw is positioned below the fixing frame and enables the fixing frame to reciprocate along the extension direction of the lead screw. Meanwhile, the roller brush is positioned above the fixing frame.

[0009] Each of the two ends of the roller brush is independently equipped with a lifting component, so that when the roller brush is working, it is lifted by the lifting component and contacts the lower end surface of the film-coating plate. When not working, the lifting component retracts and disengages from the lower end surface of the film-coating plate. The middle part of the film-coating plate is a mesh structure, and a negative pressure adsorption component is connected to the lower part of the film-coating box, and the negative pressure adsorption component creates a negative pressure inside the film-coating box.

[0010] Furthermore, the inner side of the film-coating box is symmetrically provided with slides, and the two ends of the fixing frame slide along the extension direction of the slides.

[0011] Furthermore, a drive motor is provided at the end where the lead screw is located, and the fixed frame is reciprocated in the extension direction of the lead screw by the drive motor.

[0012] Furthermore, a locking element is provided on the side edge where the film coating mechanism is located.

[0013] Furthermore, the locking component includes an L-shaped locking member and a reset protrusion. At the same time, a positioning locking member extends from the outer end of the bearing mechanism. After the bearing mechanism is flipped, the positioning locking member presses against the reset protrusion, so that the L-shaped locking member engages and fixes the positioning locking member, thereby achieving mutual contact between the bearing mechanism and the coating mechanism.

[0014] Furthermore, the two ends of the roller brush are connected to the upper surface of the fixing frame by a detachable snap-fit ​​method, and the roller brush is movable when it rolls. Furthermore, the through holes on the coating plate have a diameter of 100-200 mesh and a thickness of 0.1-0.3 mm.

[0015] Furthermore, an independently configured motion component is provided below the laminating box, and the laminating box as a whole is adjusted in the X, Y, and Z axis directions through the motion component.

[0016] The control method for the proton exchange membrane bonding machine includes the following steps:

[0017] S1. First, open the negative pressure adsorption hole on the carrier mechanism to form a negative pressure adsorption state on the upper surface of the carrier mechanism, and attach the proton membrane to be transferred to the upper surface of the carrier mechanism to achieve negative pressure adsorption.

[0018] S2. By taking pictures with positioning cameras located directly above the carrier mechanism and the coating mechanism respectively, the deflection angle of the coating plate of the coating mechanism is adjusted so that the state of the proton membrane to be transferred on the carrier mechanism is the same as the state on the coating plate.

[0019] S3. The carrier carrying the film is flipped onto the upper surface of the coating mechanism by a flipping mechanism located between the carrier mechanism and the coating mechanism.

[0020] S4. When the positioning clip of the bearing mechanism comes into contact with the locking part of the coating mechanism, the negative pressure adsorption component located below the coating mechanism is triggered, so that the entire inside of the coating box is in a negative pressure adsorption state.

[0021] S5. Start the screw of the coating assembly to rotate. At the same time, the lifting assembly of the roller brush is lifted and contacts the lower end surface where the coating plate is located. This causes the fixed frame carrying the roller brush to move from one side of the coating box to the other side along the extension direction of the screw. When the roller brush rolls, the proton membrane is detached from the support mechanism and reattached to the upper surface where the coating plate is located.

[0022] S6. The locking part falls off, and the bearing mechanism flips and resets under the operation of the flipping mechanism, and then proceeds to the next process.

[0023] Furthermore, after the bearing mechanism flips over, the positioning clip presses against the reset protrusion, and the negative pressure adsorption hole on the bearing mechanism stops working. When the reset protrusion bounces up, the negative pressure adsorption hole of the bearing mechanism starts working again.

[0024] The beneficial effects of this invention are:

[0025] 1. The coating assembly on the coating mechanism of this device is driven by a lead screw, which enables the fixed frame to reciprocate along the extension direction of the lead screw. At the same time, the roller brush is placed above the fixed frame, so that the roller brush contacts the lower end face of the coating plate, thereby making the proton membrane on the carrier mechanism completely adhered to the coating plate of the coating mechanism, reducing the generation of air bubbles during the transfer process.

[0026] 2. The moving component of this device is located below the coating mechanism. During use, after positioning and taking pictures by positioning cameras above the bearing mechanism and the coating mechanism respectively, the relative positions of the coating mechanism are adjusted so that the upper surfaces of the two are kept in the same display state. Then, the proton membrane to be transferred is transferred from the bearing mechanism to the coating mechanism by flipping, realizing the position matching of the proton membrane after flipping, so that the proton membrane can be completely attached to the coating plate.

[0027] 3. The control method of this application can realize automated bonding and transfer in a dust-free environment, which greatly improves the transfer efficiency of proton exchange membrane. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the overall usage state structure of an embodiment of the present invention;

[0030] Figure 2 This is a schematic diagram of the bonding machine before flipping, according to an embodiment of the present invention;

[0031] Figure 3 This is a schematic diagram of the laminating machine structure after being flipped according to an embodiment of the present invention;

[0032] Figure 4 This is a partial structural diagram of point A in an embodiment of the present invention;

[0033] Figure 5 This is a schematic diagram of the overall flipping mechanism according to an embodiment of the present invention;

[0034] Figure 6 This is a schematic diagram of the overall coating component according to an embodiment of the present invention. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] like Figure 1 , Figure 2 As shown, this embodiment of the invention provides a proton exchange membrane bonding machine, including a carrier mechanism 1, a coating mechanism 2, and a flipping mechanism 3. The upper surface of the carrier mechanism 1 is provided with a negative pressure adsorption hole 101 (and the carrier mechanism 1 is relatively hard, which can facilitate the effective adhesion of the proton exchange membrane). The proton exchange membrane to be transferred is placed on the carrier mechanism 1. When the negative pressure adsorption hole 101 is activated, the proton exchange membrane is initially adsorbed on the upper surface of the carrier mechanism 1. The flipping mechanism 3 is used to flip the proton exchange membrane on the carrier mechanism 1 to the upper surface of the coating mechanism 2 (at this time, the flipping mechanism 3 is set independently from the carrier mechanism 1 and the coating mechanism 2).

[0037] like Figure 5-6As shown, the coating mechanism 2 includes a coating box 21, a coating assembly 22 placed inside the coating box 21, and a coating plate 23 disposed on the upper surface of the coating box 21. The coating assembly 22 includes a transverse fixing frame 221, a roller brush 222, and a lead screw 223. The lead screw 223 is located below the fixing frame 221, and a drive motor is provided at the end of the lead screw 223 that extends outward. The drive motor drives the rotation of the lead screw 223, thereby causing the fixing frame 221 located on the lead screw 223 to reciprocate along the extension direction of the lead screw 223. At the same time, slide rails 224 are symmetrically provided on the inner side of the coating box 21, and the two ends of the fixing frame 221 slide along the slide rails 224, thereby limiting the position of the two ends of the roller brush 222 during the rolling process and ensuring the positional accuracy during the movement.

[0038] The roller brush 222 is positioned above the fixed frame 221, and lifting components 2211 are independently provided on both sides below the roller brush 222. When the roller brush 222 is working, it is lifted by the lifting components 2211 and contacts the lower end surface of the film plate 23. When not working, the upper end of the roller brush 222 is disengaged from the lower end surface of the film plate 23 by the retraction of the lifting components 2211.

[0039] The central part of the coating plate 23 has a mesh screen structure. It has evenly distributed through holes (100-200 mesh diameter and 0.1-0.3mm thickness). At this point, the coating plate 23 and the coating box 21 are detachable. A negative pressure adsorption assembly is connected to the lower part of the coating box 21, maintaining negative pressure inside the box. The two ends of the roller brush 222 are connected to the upper surface of the fixing frame 221 using a detachable snap-fit ​​method, and the roller brush 22 is set to roll.

[0040] like Figure 4 As shown, a locking element 24 is provided on the side where the coating mechanism 2 is located. The locking element 24 includes an L-shaped clip 241 and a reset protrusion 242. At the same time, a positioning clip 111 extends from the outer end of the bearing mechanism 1. When the bearing mechanism 1 is flipped, the positioning clip 111 presses against the reset protrusion 242, and the L-shaped clip 241 engages and fixes the positioning clip 111, thereby locking the bearing mechanism 1 and the coating mechanism 2 together. When the bearing mechanism 1 is flipped, the positioning clip 111 presses against the reset protrusion 242, triggering the control system, i.e., the negative pressure adsorption hole 101 on the bearing mechanism 1, to stop working, reducing the adhesion of the proton exchange membrane to the pressure plate 111. At the same time, it triggers the operation of the external negative pressure adsorption mechanism below the coating box 21. When the reset protrusion 242 pops up, the negative pressure adsorption hole 101 of the bearing mechanism 1 starts working again, and the adsorption operation of the next process is performed. At the same time, it triggers the external negative pressure adsorption mechanism below the coating box 21 to stop working.

[0041] The control method for a proton exchange membrane laminator includes the following steps:

[0042] S1, such as Figure 2 As shown, firstly, the negative pressure adsorption hole 101 on the carrier mechanism 1 is opened, so that the upper surface of the carrier mechanism 1 is in a negative pressure adsorption state, and the proton membrane to be transferred is attached to the upper surface of the carrier mechanism 1 to achieve negative pressure adsorption, and the proton membrane is laid flat on the upper surface of the carrier mechanism 1.

[0043] S2. By taking pictures with positioning cameras located directly above the support mechanism 1 and the coating mechanism 2, the captured images or pictures are transmitted to the control system. That is, using the image or picture of the upper surface of the support mechanism 1 as a reference, the motion component 211 below the coating box 21 is adjusted in the X, Y, and Z axis directions, thereby changing the deflection angle of the coating plate 23 above the coating box 21, so that the facing angle of the coating plate 23 is the same as the facing angle of the upper surface of the support mechanism 1 (which plays a role in position correction), so that the proton membrane can be completely attached to the coating plate 23 after being flipped by the support mechanism 1.

[0044] S2, such as Figure 3 As shown, the flipping mechanism 3 located between the carrier mechanism 1 and the coating mechanism 2 flips the carrier mechanism 1, which carries the coating, to the upper surface of the coating mechanism 2 (at this time, the flipping mechanism 3 is set completely independently of the carrier mechanism 1 and the coating mechanism 2, so the flipping does not affect the change of their relative positions).

[0045] S3. Activate the negative pressure adsorption component below the coating mechanism 2 to put the entire coating box 21 in a negative pressure state. At this time, the proton membrane sandwiched between the carrier mechanism 1 and the coating mechanism 2 has a downward adsorption effect.

[0046] S4. When the positioning clip 111 of the bearing mechanism 1 comes into contact with the locking clip 24 of the coating mechanism 2, the negative pressure adsorption component located below the coating mechanism 2 is triggered, so that the entire coating box 21 is in a negative pressure adsorption state. At the same time, the negative pressure adsorption hole 101 on the bearing mechanism 1 stops working, reducing the adhesion of the proton membrane to the pressure plate 111.

[0047] S4. Start the rotation of the lead screw 223 of the coating assembly 22. At the same time, the lifting assembly 2211 of the roller brush 222 is lifted and contacts the lower end surface of the coating plate 23. This causes the fixing frame 221 carrying the roller brush 222 to move from one side of the coating box 21 to the other side along the extension direction of the lead screw 223. When the roller brush 222 rolls, it detaches the proton membrane from the bearing mechanism 1 (because the roller brush 222 itself has a certain stickiness, when it contacts the proton membrane through the through hole on the surface of the coating plate 23, it produces adhesion). There is a negative pressure on one side of the roller brush 222, which causes the proton membrane to re-attach to the upper surface of the coating plate 23. The roller brush 222 moves back and forth against the lower end surface of the coating plate 23 until the proton membrane is completely attached to the upper surface of the coating plate 23.

[0048] S5. After the coating process is completed, the locking part 24 falls off. At this time, when the reset protrusion 242 pops up, the negative pressure adsorption hole 101 of the bearing mechanism 1 starts working again. At the same time, the negative pressure adsorption mechanism located below the coating box 21 stops working. The bearing mechanism 1 is flipped and reset under the operation of the flipping mechanism 3. At this time, the coating plate 23 with the proton membrane attached can directly remove the entire coating box 21 (complete the precise positioning and coating of the proton membrane on the coating plate 23), and the coated proton membrane can proceed to the next process operation.

[0049] The entire device is easy to operate and can ensure that the proton exchange membrane is completely attached to the coating plate, avoiding unnecessary air bubbles during the transfer of the proton exchange membrane. At the same time, this control method can realize automated bonding and transfer in a dust-free environment, reducing manual intervention and greatly improving the coating and transfer efficiency of the proton exchange membrane.

[0050] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A proton exchange membrane laminating machine, comprising a carrying mechanism (1), a laminating mechanism (2), and a flipping mechanism (3), characterized in that, The carrier mechanism (1) places the proton membrane to be transferred on its upper surface, and the flipping mechanism (3) flips the proton membrane on the carrier mechanism (1) to the upper surface of the coating mechanism (2). The flipping mechanism (3) is set independently from the carrier mechanism (1) and the coating mechanism (2). The coating mechanism (2) includes a coating box (21), a coating assembly (22) placed inside the coating box (21), and a coating plate (23) disposed on the upper surface of the coating box (21). The coating assembly (22) includes a transverse fixing frame (221), a roller brush (222), and a lead screw (223). The lead screw (223) is located below the fixing frame (221) and enables the fixing frame (221) to reciprocate along the extension direction of the lead screw (223). At the same time, the roller brush (222) is located above the fixing frame (221). Lifting components (2211) are independently provided below the two ends of the roller brush (222). When the roller brush (222) is working, it is lifted by the lifting components (2211) and contacts the lower end surface of the film-coating plate (23). When it is not working, it is disengaged from the lower end surface of the film-coating plate (23) by the contraction of the lifting components (2211). The middle part of the film-coating plate (23) is a mesh structure, and a negative pressure adsorption component is connected to the lower part of the film-coating box (21). The negative pressure adsorption component makes the film-coating box (21) negative pressure. A locking element (24) is provided on the side edge where the film coating mechanism (2) is located. The locking component (24) includes an L-shaped clip (241) and a reset protrusion (242). At the same time, a positioning clip (111) extends from the outer end of the bearing mechanism (1). After the bearing mechanism (1) is flipped, the positioning clip (111) presses against the reset protrusion (242), so that the L-shaped clip (241) engages and fixes the positioning clip (111), thereby achieving mutual contact between the bearing mechanism (1) and the film coating mechanism (2). Below the film-coating box (21) is an independently set motion component (211), and the overall adjustment of the film-coating box (21) in the X, Y, and Z axis directions is achieved through the motion component (211); First, turn on the support mechanism (1) to make the upper surface of the support mechanism (1) form a negative pressure adsorption state, and attach the proton membrane to be transferred to the upper surface of the support mechanism (1) to achieve negative pressure adsorption; By taking pictures with positioning cameras located directly above the carrier mechanism (1) and the coating mechanism (2) respectively, the deflection angle of the coating plate (23) of the coating mechanism (2) is adjusted so that the state of the proton membrane to be transferred on the carrier mechanism (1) is the same as the state on the coating plate (23). The carrier (1) carrying the film is flipped onto the upper surface of the coating mechanism (2) by the flipping mechanism (3) located between the carrier (1) and the coating mechanism (2); When the positioning card (111) of the bearing mechanism (1) comes into contact with the locking part (24) of the coating mechanism (2), the negative pressure adsorption component located below the coating mechanism (2) is triggered, so that the entire coating box (21) is in a negative pressure adsorption state. The screw (223) of the coating assembly (22) is started to rotate. At the same time, the lifting assembly (2211) of the roller brush (222) is lifted and contacts the lower end face of the coating plate (23). The fixed frame (221) carrying the roller brush (222) moves from one side of the coating box (21) to the other side along the extension direction of the screw (223). When the roller brush (222) rolls, the proton membrane is detached from the support mechanism (1) and reattached to the upper surface of the coating plate (23). The locking part (24) falls off, and the bearing mechanism (1) is flipped and reset under the operation of the flipping mechanism (3) and the next process is carried out.

2. The proton exchange membrane bonding machine according to claim 1, characterized in that, The inner side of the film-coating box (21) is symmetrically provided with slides (224), and the two ends of the fixing frame (221) slide along the extension direction of the slides (224).

3. The proton exchange membrane bonding machine according to claim 2, characterized in that, A drive motor is provided at the end of the lead screw (223), and the fixed frame (221) is reciprocated in the extension direction of the lead screw (223) by the drive motor.

4. The proton exchange membrane bonding machine according to claim 1, characterized in that, The two ends of the roller brush (222) are connected to the upper surface of the fixed frame (221) by means of disassembly and engagement, and the roller brush (222) is movable when it rolls.

5. The proton exchange membrane laminating machine according to claim 1, characterized in that, The mesh size of the film plate (23) is 100-200 mesh, and the thickness is 0.1-0.3 mm.

6. The proton exchange membrane laminating machine according to claim 1, characterized in that, After the bearing mechanism (1) flips over, the positioning card (111) presses against the reset protrusion (242), and the negative pressure adsorption hole (101) on the bearing mechanism (1) stops working. When the reset protrusion (242) pops up, the negative pressure adsorption hole (101) of the bearing mechanism (1) starts working again.

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