Automatic detection device for hydrogen fuel cell graphite bipolar plate

Abstract

An automatic detection device for hydrogen fuel cell graphite bipolar plates relates to the field of hydrogen fuel cell graphite bipolar plate detection, and comprises a machine body, a feeding part, a detection part and a loading part. The feeding part is used for placing hydrogen fuel cell graphite bipolar plates on the detection part. The detection part is used for quality detection of hydrogen fuel cell graphite bipolar plates. The loading part is used for stacking and loading hydrogen fuel cell graphite bipolar plates after detection. The detection speed and accuracy of hydrogen fuel cell graphite bipolar plates can be improved, and the output of defective hydrogen fuel cell graphite bipolar plates can be reduced.

Description

Technical Field

[0001] This invention relates to the field of testing graphite bipolar plates for hydrogen fuel cells, and specifically to an automatic testing device for graphite bipolar plates for hydrogen fuel cells. Background Technology

[0002] With strong national support for the development of the new energy industry, the sector has experienced explosive growth, particularly in lithium batteries and fuel cells. While lithium batteries have reached a bottleneck, fuel cells remain in a phase of rapid development and technological breakthroughs. Graphene and graphite plates are widely used in fuel cells, and with the maturation of graphene and graphite material processing and application, graphite has become one of the most important materials for fuel cell production. The use of graphite bipolar plates in hydrogen fuel cells has become mainstream. However, with the increasing production capacity of graphite bipolar plates for hydrogen fuel cells, quality inspection can no longer be achieved by manual or visual inspection. Traditional inspection methods are not only unable to keep up with the increasing volume but are also prone to errors due to human eye fatigue. Summary of the Invention

[0003] This invention provides an automatic detection device for graphite bipolar plates of hydrogen fuel cells, which improves the detection speed and accuracy of graphite bipolar plates for hydrogen fuel cells and reduces the output of defective graphite bipolar plates for hydrogen fuel cells.

[0004] The above-mentioned technical objective of the present invention is achieved through the following technical solution: an automatic detection device for graphite bipolar plates of hydrogen fuel cells, comprising a body, a feeding section, a detection section, and a loading section. The feeding section is used to place the graphite bipolar plates of hydrogen fuel cells onto the detection section. The detection section is used to perform quality detection on the graphite bipolar plates of hydrogen fuel cells. The loading section is used to stack and load the graphite bipolar plates of hydrogen fuel cells after detection. The detection section includes a first detection plate, a vision detection section, a transport section, and a second detection plate. The transport section includes a first transfer section and a second transfer section. The first transfer section includes a first slide rail, a first slide block, a first rotating shaft, a first base plate, a first push cylinder, a first suction plate, and a first suction pump. The first slide rail... The first detection plate is disposed on both sides, and a first rotating shaft is mounted between the first slide blocks on both sides. A first rotating motor is located on the side of the first slide block, and the shaft end of the first rotating motor is connected to the first rotating shaft. The first base plate is fixed to the first rotating shaft. A first pushing cylinder is fixed to the first base plate, and the shaft end of the first pushing cylinder is fixed to the middle of the first suction plate. A first suction pump is mounted on the first base plate. The lower surface of the first suction plate has suction holes that extend inward from the lower surface of the first suction plate and communicate with the side through hole of the first suction plate. The first suction pump is connected to the side through hole of the first suction plate through a connecting pipe. The second transfer part includes a second slide rail, a second slide block, a second base plate, and a first rotating shaft. The system comprises two push cylinders, a second suction plate, and a second suction pump. The second slide rails are respectively disposed on both sides of the second detection plate, and the second slide blocks on both sides are connected by the second base plate. The second push cylinder is fixed to the second base plate, and the shaft end of the second push cylinder is fixed to the middle of the second suction plate. The second suction pump is mounted on the second base plate. The lower surface of the second suction plate has the suction holes. The second suction pump is connected to the side through-hole of the second suction plate via a connecting pipe. The visual inspection unit is used to perform high-definition photography of the hydrogen fuel cell graphite bipolar plate placed on the surfaces of the first and second detection plates and to inspect the texture quality of the hydrogen fuel cell graphite bipolar plate. The surfaces of the first and second detection plates have the... The system includes an adsorption hole that extends inward and connects to through holes on the sides of the first and second detection plates. These through holes are connected to a vacuum pump via connecting pipes. The loading section includes a loading robot and a discharge trough. The lower end of the loading robot's lead screw is connected to a conveying section. The conveying section includes a connecting base plate, suction cups, and a vacuum pump. The lower end of the lead screw is connected to the connecting base plate. The suction cups are distributed on the bottom surface of the connecting base plate and are connected to the vacuum pump via connecting pipes. The discharge trough includes a fixed side plate, a width-shifting plate, and a length-shifting plate. The fixed side plate is a vertically connected plate. The outer walls of the width-shifting plate and the length-shifting plate are connected to the shaft ends of cylinders.The inner surface of the longitudinal shifting plate has a double-layer pushing section, which includes a supporting plate and a filling strip. The supporting plate is connected to the inner surface of the longitudinal shifting plate by a spring. The supporting plate has a support plate groove and a receiving strip groove. The support plate groove is a horizontal groove recessed inward from the surface of the supporting plate. The receiving strip groove is a through groove extending horizontally outward from the middle of the bottom surface of the vertical groove of the support plate groove, penetrating the supporting plate. The support plate groove and the receiving strip groove are spaced apart in the vertical direction. The filling strip is a raised strip extending horizontally from the inner surface of the longitudinal shifting plate into the receiving strip groove.

[0005] Preferably, the device also includes a stabilizing pusher, which includes an anti-detachment strip, an upward protrusion, and a downward protrusion. The anti-detachment strip is a protrusion extending towards each other from the groove edge of the groove near the surface of the longitudinal shift plate. The upward protrusion is a protrusion extending vertically upward from the outer end of the filling strip. The downward protrusion is an arc-shaped panel extending downward from the outer end of the filling strip and gradually away from the direction of the filling strip.

[0006] Preferably, the downwardly protruding surface has a high-position limit groove, which is a horizontally extending arc-shaped groove that is recessed inward from the downwardly protruding surface. The shelf groove has a sliding surface, which is an arc-shaped convex surface that extends from the wall of the shelf groove to the surface of the support plate. The support plate also has a breakage groove, which is a through groove that extends vertically from the surface of the sliding surface. The suction cup is connected to the connecting base plate by a push-pull strip, and the suction cup is fixed to the outer end of the push-pull strip. The connecting base plate has a first positioning groove, which is a vertical through groove that coincides with the longitudinal central axis of the connecting base plate. The push-pull strip has a second positioning groove, which is a vertical groove that penetrates the push-pull strip. The push-pull strip is fastened by bolts and nuts.

[0007] Preferably, the loading section includes a stacking trough, a paper clamping trough, and a stacking robot. The paper clamping trough is composed of vertical connecting blocks, which are spliced ​​together from mutually perpendicular flat plates. The stacking trough, the paper clamping trough, and the stacking robot are arranged on the table surface of the machine body. The paper clamping trough also has a paper separating brush, which is located on the vertical edge side of the vertical connecting block.

[0008] Preferably, the paper clamping groove also has a brush height adjustment part, which includes a height groove, a position groove, a brush connecting rod, a brush holder rod, and a groove-applying push plate. The height groove is a vertical groove that runs horizontally through the vertical connecting block. The position groove is a through groove that extends horizontally outward from the side wall of the height groove. The brush holder rod is a rectangular straight rod inserted into the position groove. The brush connecting rod connects the paper separating brush and the inner end of the brush holder rod. The groove-applying push plate is a panel that extends outward from the outer side of the outer end of the brush holder rod. The surface of the groove-applying push plate has cross-distributed straight grooves.

[0009] Preferably, the vertical connecting block also has a blowing section for blowing away overlapping papers. The blowing section includes an air inlet, a slow-flow pipe, a single air pipe, and a wind direction inlet. The air inlet is a recessed opening extending inward from the outer wall of the vertical connecting block. The outer end of the air inlet is connected to a blower via an air pipe. The slow-flow pipe is a through-slot that connects to the inner wall of the vertical connecting block from the end of the air inlet and gradually increases in width. The single air pipe is a straight slot that extends upward from the end of the air inlet and toward the inner wall of the vertical connecting block. The wind direction inlet is a circular through-slot that connects downward from the end of the single air pipe to the inner wall of the vertical connecting block. The outlet of the slow-flow pipe also has a diffuser screen with diffuser holes distributed on the diffuser screen at irregular intervals. The machine also includes a paper sorting cylinder, which is arranged on the table of the machine body. The shaft end of the paper sorting cylinder is connected to the outer wall of the vertical connecting block.

[0010] In summary, the present invention has the following beneficial effects.

[0011] 1. The feeding robot can efficiently transport the graphite bipolar plates of hydrogen fuel cells from the discharge trough to the first detection plate.

[0012] 2. The longitudinal and transverse shift plates can be moved by cylinders to adjust the posture of the graphite bipolar plates in the hydrogen fuel cell.

[0013] 3. During the advancement of the graphite bipolar plates in the hydrogen fuel cell, the edges of the graphite bipolar plates are supported by the support slots to ensure that the graphite bipolar plates are not subjected to excessive pressure from above and are not worn during horizontal movement. When the graphite bipolar plates are aligned and no longer moving, the filling strips in the slots move towards the support slots to push the graphite bipolar plates out, thus completing the neat repositioning and stacking of the graphite bipolar plates.

[0014] 4. The downward convex arc surface can act as a buffer when it comes into contact with the graphite bipolar plate of the hydrogen fuel cell, protecting the edges of the graphite bipolar plate from being squeezed and damaged. In addition, the outward-extending arc can also collect and push out the small debris generated when it comes into contact with the graphite bipolar plate of the hydrogen fuel cell.

[0015] 5. The graphite bipolar plate of the hydrogen fuel cell can be reversed through the first transfer unit and received by the second transfer unit. After being placed on the second detection plate, it can achieve double-sided detection, which is efficient and interference-free.

[0016] 6. Adsorption holes are provided on the surfaces of the first and second detection plates, which is beneficial to the positional stability of the graphite bipolar plates in hydrogen fuel cells.

[0017] 7. The paper separation brush can separate the paper attached to it when the suction cup picks up the paper, avoiding paper linkage and waste.

[0018] 8. Airflow is delivered to the paper in the paper tray via the blowing unit to prevent paper from sticking together. The outlet of the gentle air duct is a vertical strip, providing a gentler airflow and avoiding excessive air force on the paper. The airflow is directed downwards from the air outlet to blow off any accidentally stuck lower layers of white paper. A diffuser screen is used to more evenly distribute the airflow in the gentle air duct, especially for irregularly distributed diffuser holes. In particular, the outline and cross-section of the diffuser holes can be irregularly shaped to improve the randomness and dispersion of airflow. The paper-arranging cylinder can be used to move the vertical connecting block horizontally, thus arranging the paper on the inner side. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments 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 the automatic detection device.

[0021] Figure 2 This is a side view of the automatic detection device.

[0022] Figure 3 This is a schematic diagram of the detection unit.

[0023] Figure 4 This is a schematic diagram of the feeding section.

[0024] Figure 5 This is an enlarged schematic diagram of the connection point to the substrate.

[0025] Figure 6 This is a schematic diagram of the double-layer pusher section.

[0026] Figure 7 This is a schematic diagram of the supporting structure.

[0027] Figure 8Enlarged schematic diagram of the stable push section.

[0028] Figure 9 This is a schematic diagram of the high-level limit groove structure.

[0029] Figure 10 This is a schematic diagram showing the connection between the suction cup and the connecting substrate.

[0030] Figure 11 This is a bottom view of the connecting substrate.

[0031] Figure 12 This is a schematic diagram of the loading section.

[0032] Figure 13 This is an enlarged schematic diagram of the vertical connector.

[0033] Figure 14 This is a schematic diagram of the brush height adjustment section.

[0034] Figure 15 Another view of the brush height adjustment section.

[0035] Figure 16 This is a schematic diagram of the blower section.

[0036] In the diagram: 01, First detection plate; 02, Second detection plate; 03, First slide rail; 04, First suction plate; 05, First rotating motor; 06, Second slide rail; 07, Second suction plate; 11, Feeding robot; 12, Discharge trough; 13, Connecting base plate; 14, Suction cup; 15, Longitudinal moving plate; 16, Lifting plate; 17, Filling strip; 18, Shelf groove; 19, Containing strip groove; 110, Anti-detachment strip; 111, Downward protrusion; 112, High position limit groove; 113, Sliding surface; 114, Drop groove; 115, Push-pull strip; 116, First positioning groove; 21, Stacking robot; 22, Vertical connecting block; 23, Paper separating brush; 24, Height groove; 25, Position groove; 26, Slotting push plate; 27, Air inlet; 28, Slow air duct; 29, Air direction inlet; 210, Paper sorting cylinder. Detailed Implementation

[0037] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0038] Example 1

[0039] like Figures 1 to 16 As shown, an automatic testing device for graphite bipolar plates of hydrogen fuel cells includes a body, a feeding section, a testing section, and a loading section. The feeding section is used to place the graphite bipolar plates of hydrogen fuel cells on the testing section. The testing section is used to perform quality testing on the graphite bipolar plates of hydrogen fuel cells. The loading section is used to stack and load the graphite bipolar plates of hydrogen fuel cells after testing.

[0040] The inspection unit includes a first inspection plate 01, a vision inspection unit, a transport unit, and a second inspection plate 02. The transport unit includes a first transfer unit and a second transfer unit. The first transfer unit includes a first slide rail 03, a first slide block, a first rotating shaft, a first base plate, a first push cylinder, a first suction plate 04, and a first vacuum pump. The first slide rail 03 is disposed on both sides of the first inspection plate 01. A first rotating shaft is mounted between the first slide blocks on both sides. A first rotary motor 05 is located on the side of the first slide block. The shaft end of the first rotary motor 05 is connected to the first rotating shaft. The first base plate... A first push cylinder is fixed to a first rotating shaft and to a first substrate. The shaft end of the first push cylinder is fixed to the middle of a first suction plate 04. Alternatively, the first push cylinder can be directly fixed to the bottom surface of the first substrate or to the upper surface of the first substrate. The telescopic shaft of the cylinder passes through a circular hole in the first substrate and connects to the first suction plate 04. A first suction pump is mounted on the first substrate. The lower surface of the first suction plate 04 has suction holes that extend inward from the lower surface of the first suction plate 04 and connect to the first suction plate 04. At the side through-hole, the first suction pump is connected to the side through-hole of the first suction plate 04 via a connecting pipe. The second transfer part includes a second slide rail 06, a second slide block, a second base plate, a second push cylinder, a second suction plate 07, and a second suction pump. The second slide rail 06 is respectively disposed on both sides of the second detection plate 02 and is disposed outside the first slide rail 03. The second slide blocks on both sides are connected by the second base plate. The second push cylinder is fixed to the second base plate, and the shaft end of the second push cylinder is fixed to the middle of the second suction plate 07. Here, it can be the second push cylinder. The cylinder is directly fixed to the bottom surface of the second substrate, or it can be fixed to the upper surface of the second substrate. The telescopic shaft of the cylinder passes through the round hole of the second substrate and connects to the second suction plate 07. The second suction pump is installed on the second substrate. The lower surface of the second suction plate 07 has suction holes. The second suction pump is connected to the side through hole of the second suction plate 07 through a connecting pipe. The vision inspection unit is used to take high-definition pictures of the graphite bipolar plates of the hydrogen fuel cell placed on the surfaces of the first inspection plate 01 and the second inspection plate 02 and to check the texture quality of the graphite bipolar plates of the hydrogen fuel cell.When the loading unit places the graphite bipolar plate of the hydrogen fuel cell onto the surface of the first detection plate 01, the vision inspection unit photographs and records the front or first side of the graphite bipolar plate. After analyzing the surface texture quality by computer, the first slide moves above the first detection plate 01. At this time, the first suction plate 04 faces downward, and the first push cylinder operates, pushing the first suction plate 04 onto the surface of the graphite bipolar plate. Simultaneously, the first vacuum pump operates, giving the bottom surface of the first suction plate 04 an adsorption force, which lifts the graphite bipolar plate. Then, the first slide moves to the middle position between the first detection plate 01 and the second detection plate 02. The first rotating motor 05 operates, rotating the first rotating shaft along with the first suction plate 04, so that the first suction plate 04 faces upward. At this time, the second slide... The second substrate and the second suction plate 07 move to above the first suction plate 04. The second push cylinder pushes the second suction plate 07 onto the surface of the first suction plate 04. Simultaneously, the second suction pump operates, and the first suction pump stops pumping air, causing the graphite bipolar plate of the hydrogen fuel cell to detach from the surface of the first suction plate 04 and be adsorbed by the second suction plate 07. Then, the second slide moves above the second detection plate 02, and the second push cylinder continues to push the second suction plate 07 down to the surface of the second detection plate 02. The second suction pump stops pumping air, placing the graphite bipolar plate of the hydrogen fuel cell on the surface of the second detection plate 02. The vision inspection unit then photographs, records, and analyzes the back or second side of the graphite bipolar plate. Finally, the loading unit removes the graphite bipolar plate from the surface of the second detection plate 02 and stacks it for loading. The movement between the first slide rail 03 and the first slide, the second slide rail 06 and the second slide can be achieved using an air-bearing guide rail system. Specifically, the texture quality of the graphite bipolar plates of the hydrogen fuel cell placed on the surfaces of the first detection plate 01 and the second detection plate 02 can be inspected at specific locations. Specifically, the vision inspection unit can be mounted on a motion slide and moved by a screw cylinder or an air-bearing guide rail. The first substrate and the first rotating shaft can be fixed together using a component similar to a steel pipe fastener.

[0041] The surfaces of the first detection plate 01 and the second detection plate 02 have adsorption holes that extend inward and connect to through holes on the sides of the first detection plate 01 and the second detection plate 02. The through holes on the sides of the first detection plate 01 and the second detection plate 02 are respectively connected to a vacuum pump via connecting pipes. The adsorption holes on the surfaces of the first detection plate 01 and the second detection plate 02 are beneficial for the positional stability of the graphite bipolar plates in the hydrogen fuel cell.

[0042] The loading section includes a loading robot 11 and a discharge trough 12. The lower end of the lead screw of the loading robot 11 is connected to a plate conveying section. The plate conveying section includes a connecting base plate 13, suction cups 14, and an air pump. The lower end of the lead screw is connected to the connecting base plate 13. The suction cups 14 are distributed on the bottom surface of the connecting base plate 13 and are connected to the air pump through connecting pipes. The discharge trough 12 includes a fixed side plate, a width-shifting plate, and a length-shifting plate 15. The fixed side plate is a vertical plate that is perpendicular to each other. The outer walls of the width-shifting plate and the length-shifting plate 15 are connected to the shaft ends of cylinders. Both the width-shifting plate and the length-shifting plate 15 are vertical flat plates. The loading robot 11 and the discharge trough 12 are fixed on the machine body table. The machine body can house a host computer for controlling the operation of the loading robot 11, such as a computer. The loading robot 11 is configured to adsorb the graphite bipolar plates of the hydrogen fuel cells placed in the discharge trough 12, and then transport them to the surface of the testing platform for the next process. After the graphite bipolar plates of the hydrogen fuel cells are tested and transported to the subsequent process platform, the graphite bipolar plates of the hydrogen fuel cells in the discharge trough 12 are adsorbed and transported again. The loading robot 11 relies on the plate-carrying part at the lower end of the lead screw for adsorption and transportation. Specifically, when the loading robot 11 moves the plate-carrying part into the discharge trough 12, the lead screw can move downward. When the bottom surface of the suction cup 14 contacts the graphite bipolar plate of the hydrogen fuel cell, the vacuum pump works, using the vacuum negative pressure of the suction cup 14 to suck up the graphite bipolar plate of the hydrogen fuel cell. At this time, the lead screw is lifted upward, and the graphite bipolar plate of the hydrogen fuel cell is transported to the surface of the testing platform through the rotating arm and other components of the loading robot 11. At this time, the vacuum pump stops working, so that there is no longer a vacuum negative pressure on the bottom surface of the suction cup 14, and the graphite bipolar plate of the hydrogen fuel cell is placed stably on the monitoring platform. The loading robot 11 can use the AR series horizontal multi-joint robot from Shenzhen Zowell Technology Co., Ltd. A pair of right-angled groove surfaces of the unloading trough 12 are fixed surfaces, i.e., fixed side plates. The longitudinal and lateral moving plates 15 are both moved and controlled by cylinder shafts fixed to the machine platform. When the transport section needs to adsorb graphite bipolar plates from hydrogen fuel cells, the cylinder operates, causing the longitudinal and lateral moving plates 15 and lateral moving plates to move outward a certain distance, thus allowing the graphite bipolar plates in the unloading trough 12 to be unrestricted and easily removed. When the transport section has removed all the graphite bipolar plates, some may shift due to the lack of positional restriction. The cylinder then pushes the longitudinal and lateral moving plates back, maintaining the neat posture of the graphite bipolar plates in the unloading trough 12 and ensuring uniform transport to their initial positions.

[0043] The inner surface of the longitudinal shift plate 15 has a double-layer pusher section, which includes a support plate 16 and a filling strip 17. The support plate 16 is connected to the inner surface of the longitudinal shift plate 15 by a spring. The support plate 16 has a support plate groove 18 and a receiving strip groove 19. The support plate groove 18 is a horizontal groove that is recessed inward from the surface of the support plate 16. The receiving strip groove 19 is a through groove that extends horizontally outward from the middle of the bottom surface of the vertical groove of the support plate groove 18 through the support plate 16. The support plate groove 18 and the receiving strip groove 19 are distributed at intervals in the vertical direction. The filling strip 17 is a raised strip that extends horizontally from the inner surface of the longitudinal shift plate 15 into the receiving strip groove 19. Springs are located on the upper and lower sides of the support plate 16 and connected to the longitudinal shift plate 15. Each time the cylinder pushes the longitudinal shift plate 15 from the outside to the inside, it can push the hydrogen fuel cell graphite bipolar plate that has shifted position. When the edge of the hydrogen fuel cell graphite bipolar plate contacts the support plate 16, it can be embedded in the support plate groove 18. In this way, during the advancement of the hydrogen fuel cell graphite bipolar plate, the edges of the hydrogen fuel cell graphite bipolar plate are supported by the support plate groove 18, ensuring that the hydrogen fuel cell graphite bipolar plates are not worn by excessive pressure from above during horizontal movement. When the hydrogen fuel cell graphite bipolar plates are aligned and no longer moving, the filling strip 17 in the slot 19 moves towards the support plate groove 18, pushing out the hydrogen fuel cell graphite bipolar plate, thereby completing the neat reset and stacking of the hydrogen fuel cell graphite bipolar plates.

[0044] It also includes a stabilizing pusher, which includes an anti-detachment strip 110, an upward protrusion, and a downward protrusion 111. The anti-detachment strip 110 is a protrusion extending towards each other from the groove edge of the self-filling groove 19 on the side near the surface of the longitudinal shift plate 15. The upward protrusion is a protrusion extending vertically upward from the outer end of the self-filling groove strip 17. The downward protrusion 111 is an arc-shaped panel extending downward from the outer end of the self-filling groove strip 17 and gradually away from the direction of the filling groove strip 17. When the longitudinal shift plate 15 is pulled by the cylinder, the filling strip 17 in the groove 19 can be blocked by the anti-detachment strip 110 and the upward and downward protrusions 111, preventing the filling strip 17 from detaching from the groove 19. In particular, the downward protrusion 111 has an arc-shaped surface, which can play a buffering role when it comes into contact with the graphite bipolar plate of the hydrogen fuel cell, protecting the edge of the graphite bipolar plate of the hydrogen fuel cell from being squeezed and damaged. In addition, the outwardly extending arc shape can also collect and push out the fine debris generated when it comes into contact with the graphite bipolar plate of the hydrogen fuel cell.

[0045] The surface of the downward protrusion 111 has a high-position limit groove 112, which is a horizontally extending arc-shaped groove that is recessed inward from the surface of the downward protrusion 111. The shelf groove 18 has a sliding surface 113, which is an arc-shaped convex surface that extends from the wall of the shelf groove 18 to the surface of the support plate 16. The support plate 16 also has a falling debris groove 114, which is a vertical through groove that extends through the surface of the sliding surface 113. The suction cup 14 is connected to the connecting base plate 13 through the push-pull strip 115. The suction cup 14 is fixed to the outer end of the push-pull strip 115. The connecting base plate 13 has a first positioning groove 116, which is a vertical through groove that coincides with the longitudinal central axis of the connecting base plate 13. The push-pull strip 115 has a second positioning groove, which is a vertical through groove that extends through the push-pull strip 115. The push-pull strip 115 is fastened by bolts and nuts. The high-position limit groove 112 prevents the graphite bipolar plate from rubbing against the support plate groove 18 when the downward protrusion 111 pushes the edge of the graphite bipolar plate to a high point during contact or compression. When the support plate 16 just presses into contact with the graphite bipolar plate, the graphite bipolar plate can be guided into the support plate groove 18 by the sliding surface 113. The debris drop groove 114 ensures that graphite debris generated during the outward pushing of the downward protrusion 111 falls to the bottom of the discharge groove 12 or the machine platform, and is subsequently cleaned instead of being pushed into the interlayer of the graphite bipolar plate along with the downward protrusion 111. The suction cup 14 is fixed to the outer end of the push-pull strip 115. If the position of the suction cup 14 needs to be adjusted, the push-pull strip 115 can be moved below the connecting base plate 13 by loosening the nut. In particular, the position of the suction cup 14 can be selected by changing the relative positions of the first positioning groove 116, the second positioning groove and the bolt. When the position of the suction cup 14 needs to be fixed, the nut can be tightened so that the bolt presses the push-pull strip 115 against the bottom surface of the connecting base plate 13.

[0046] The loading section includes a stacking trough, a paper clamping trough, and a stacking robot 21. The paper clamping trough is composed of vertical connecting blocks 22, which are spliced ​​together from mutually perpendicular flat plates. The stacking trough, the paper clamping trough, and the stacking robot 21 are arranged on the table of the machine body. The paper clamping trough also has a paper separating brush 23, which is located on the vertical edge side of the vertical connecting block 22. The stacking robot 21 has a lead screw connected to a transport section for transporting graphite bipolar plates for hydrogen fuel cells. This transport section includes a connecting substrate, suction cups, and a vacuum pump. The suction cups are located on the bottom surface of the connecting substrate and are connected to the vacuum pump via connecting pipes. After the transport section removes a qualified graphite bipolar plate from the inspection platform and places it into the stacking slot, it then picks up white paper from the paper clamping slot and transports it above the graphite bipolar plate in the stacking slot. It then retrieves the graphite bipolar plate from the inspection platform and places it back into the stacking slot. This process is repeated, alternating the stacking of the graphite bipolar plates and white paper to complete the stacking and loading of the graphite bipolar plates. Notably, the packaging cardboard for the graphite bipolar plates can also be placed directly into the stacking slot, improving packaging efficiency. The stacking robot 21 can use the AR series horizontal multi-joint robot from Shenzhen Zowell Technology Co., Ltd. The paper separation brush 23 is a vertically positioned brush that separates the paper attached to it from the paper when the suction cup picks it up, preventing paper linkage and waste.

[0047] The paper clamping slot also has a brush height adjustment section, which includes a height groove 24, a position groove 25, a brush connecting rod, a brush holder rod, and a groove-attaching push plate 26. The height groove 24 is a vertical groove that horizontally penetrates the vertical connecting block 22. The position groove 25 is a through groove that extends horizontally outward from the side wall of the height groove 24. The brush holder rod is a rectangular straight rod inserted into the position groove 25. The brush connecting rod connects the paper separating brush 23 and the inner end of the brush holder rod. The groove-attaching push plate 26 is a panel that extends outward from the outer side of the brush holder rod. The surface of the groove-attaching push plate 26 has cross-distributed straight grooves. The height of the paper separating brush 23 can be adjusted according to the amount or height of paper in the paper clamping slot, making the paper separating brush 23 more efficient. Specifically, after the brush holder rod is horizontally pushed into the height groove 24, the groove-attaching push plate 26 is pushed to make the brush holder rod position on one side of the height groove 24 at different heights, and then the brush holder rod is pushed into the height groove 24 to fix the height. The cross-distributed grooves can increase resistance when force is applied in different directions, making the grooved push plate 26 more effective.

[0048] The vertical connecting block 22 also has a blowing section for blowing away overlapping papers. The blowing section includes an air inlet 27, a slow air duct 28, a single air duct, and an air direction inlet 29. The air inlet 27 is a recessed opening from the outer side wall of the vertical connecting block 22. The outer end of the air inlet 27 is connected to a blower through an air pipe. The slow air duct 28 is a through groove that connects to the inner side wall of the vertical connecting block 22 from the end of the air inlet 27 and gradually increases in width. The single air duct extends upward from the end of the air inlet 27 and downwards. The inner wall of the connecting block 22 is close to the extended straight groove. The air outlet 29 is a circular through groove that connects downward from the end of the single air duct to the inner wall of the connecting block 22. There is also a diffuser at the outlet of the slow air duct 28, with diffuser holes distributed irregularly at intervals. It also includes a paper sorting cylinder 210, which is arranged on the table of the machine body. The shaft end of the paper sorting cylinder 210 is connected to the outer wall of the connecting block 22. By blowing air into the paper clamping groove through the blowing section, it can prevent the paper from sticking together. Specifically, the air inlet 27 is blown by a blower. Part of the air enters the slow air duct 28. The outlet of the slow air duct 28 is a vertical strip, which can deliver air more gently and avoid the paper being subjected to excessive wind force. Part of the air enters the single air duct and is blown out obliquely downward from the air outlet 29 to blow off the lower layer of white paper that has been accidentally stuck together. The air diffuser is used to more evenly distribute the airflow in the air duct 28, especially for irregularly distributed diffuser holes. In particular, the outline and cross-section of the diffuser holes can be set to irregular shapes to improve the randomness and dispersion of airflow. The vertical connecting block 22 can be moved by the paper sorting cylinder 210 to sort the paper on the inside.

[0049] In the description of this invention, it should be understood that the terms "front and back", "left and right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention.

[0050] Of course, those skilled in the art should understand that the term "a" should be understood as "at least one" or "one or more". That is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple. The term "a" should not be understood as a limitation on the quantity.

[0051] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art under the technical guidance of the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. An automatic detection device for graphite bipolar plates in hydrogen fuel cells, characterized in that, The application relates to a hydrogen fuel cell graphite bipolar plate quality detection device, which comprises a machine body, a feeding part, a detection part and a loading part, the feeding part is used for placing hydrogen fuel cell graphite bipolar plates on the detection part, the detection part is used for quality detection of the hydrogen fuel cell graphite bipolar plates, and the loading part is used for stacking and loading the hydrogen fuel cell graphite bipolar plates after detection. The detection part comprises a first detection plate (01), a visual detection part, a carrying part and a second detection plate (02), the carrying part comprises a first transfer part and a second transfer part, the first transfer part comprises a first sliding rail (03), a first sliding seat, a first rotating shaft, a first base plate, a first pushing cylinder, a first suction plate (04) and a first air pump, the first sliding rail (03) is arranged on both sides of the first detection plate (01), a first rotating shaft is arranged between the first sliding seats on both sides, a first rotating motor (05) is arranged on the side of the first sliding seat, the shaft end of the first rotating motor (05) is connected with the first rotating shaft, the first base plate is fixedly connected with the first rotating shaft, the first pushing cylinder is fixedly connected with the first base plate, the shaft end of the first pushing cylinder is fixedly connected with the middle part of the first suction plate (04), the first air pump is arranged on the first base plate, the lower surface of the first suction plate (04) is provided with a suction hole, the suction hole extends inward from the lower surface of the first suction plate (04) and is connected with a side through hole of the first suction plate (04), the first air pump is connected with the side through hole of the first suction plate (04) through a connecting pipe, the second transfer part comprises a second sliding rail (06), a second sliding seat, a second base plate, a second pushing cylinder, a second suction plate (07) and a second air pump, the second sliding rail (06) is arranged on both sides of the second detection plate (02), the second base plate is connected between the second sliding seats on both sides, the second pushing cylinder is fixedly connected with the second base plate, the shaft end of the second pushing cylinder is fixedly connected with the middle part of the second suction plate (07), the second air pump is arranged on the second base plate, the lower surface of the second suction plate (07) is provided with the suction hole, the second air pump is connected with the side through hole of the second suction plate (07) through a connecting pipe, the visual detection part is used for high-definition photography of the hydrogen fuel cell graphite bipolar plates placed on the surfaces of the first detection plate (01) and the second detection plate (02) and inspection of the texture quality of the hydrogen fuel cell graphite bipolar plates, the surfaces of the first detection plate (01) and the second detection plate (02) are provided with the suction holes, the suction holes extend inward and are connected with through holes in the sides of the first detection plate (01) and the second detection plate (02), the through holes in the sides of the first detection plate (01) and the second detection plate (02) are respectively connected with air pumps through connecting pipes, the feeding part comprises a feeding robot (11) and a discharging groove (12), the lower end of a lead screw of the feeding robot (11) is connected with a plate conveying part, the plate conveying part comprises a connecting base plate (13), a suction disc (14) and an air pump, the lower end of the lead screw is connected with the connecting base plate (13),The sucking disc (14) is distributed on the bottom surface of the connecting substrate (13), the sucking disc (14) is connected with the air pump through the connecting pipe, the feeding groove (12) comprises a fixed side plate, a wide moving plate and a long moving plate (15), the fixed side plate is a vertical plate which is connected with each other perpendicularly, the outer side wall surface of the wide moving plate and the long moving plate (15) is connected with the shaft end of the air cylinder, the inner side surface of the long moving plate (15) is provided with a double-layer pushing part, the double-layer pushing part comprises a lifting plate (16) and a filling groove strip (17), the lifting plate (16) is connected with the inner side surface of the long moving plate (15) through a spring, the lifting plate (16) is provided with a lifting plate groove (18) and a containing strip groove (19), the lifting plate groove (18) is a horizontal recess which is recessed inward from the surface of the lifting plate (16), the containing strip groove (19) is a through groove which is horizontally and outwardly penetrated through the lifting plate (16) from the middle part of the vertical groove bottom surface of the lifting plate groove (18), the lifting plate groove (18) and the containing strip groove (19) are distributed in the vertical direction, and the filling groove strip (17) is a protruding strip which is horizontally extended from the inner side surface of the long moving plate (15) into the containing strip groove (19).

2. The automatic detection device for hydrogen fuel cell graphite bipolar plate according to claim 1, characterized in that, It also includes a stable pushing part, which includes a anti-off strip (110), upward and downward protrusions (111), the anti-off strip (110) is a protruding strip extending from the groove edge of the container groove (19) near the surface of the long direction moving plate (15), the upward protrusion is a protruding strip extending vertically upward from the outer end of the filling groove strip (17), and the downward protrusion (111) is an arc-shaped panel extending downward and gradually away from the filling groove strip (17) from the outer end of the filling groove strip (17).

3. The automatic detection device for hydrogen fuel cell graphite bipolar plates according to claim 2, characterized in that, There is a high-limit groove (112) on the surface of the downward protrusion (111), which is an arc-shaped recess extending horizontally inward from the surface of the downward protrusion (111), the shelf groove (18) has a sliding surface (113), which is an arc-shaped convex surface extending from the wall surface of the shelf groove (18) to the surface of the shelf plate (16), the shelf plate (16) also has a falling groove (114), which is a through groove extending vertically from the surface of the sliding surface (113), the suction cup (14) is connected to the connecting base plate (13) through a push-pull single strip (115), the suction cup (14) is fixed to the outer end of the push-pull single strip (115), the connecting base plate (13) has a first positioning groove (116), which is a vertical through groove coinciding with the long direction central axis of the connecting base plate (13), the push-pull single strip (115) has a second positioning groove, which is a vertical through groove of the strip groove of the push-pull single strip (115), and the push-pull single strip (115) is fastened by bolts and nuts.

4. The automatic detection device for hydrogen fuel cell graphite bipolar plates according to claim 3, characterized in that, The loading part includes a stacking groove, a paper clamping groove and a stacking robot (21), the paper clamping groove is composed of a vertical block (22), the vertical block (22) is spliced by mutually perpendicular plates, the stacking groove, the paper clamping groove and the stacking robot (21) are arranged on the table surface of the machine body, and the paper clamping groove also has a paper separation brush (23) arranged on the vertical edge side of the vertical block (22).

5. The automatic detection device for hydrogen fuel cell graphite bipolar plates according to claim 4, characterized in that, The paper clamping groove also has a brush height adjusting part, which includes a height groove (24), a position groove (25), a brush connecting rod, a brush holder rod and a sticking groove push plate (26), the height groove (24) is a vertical groove extending horizontally through the vertical block (22), the position groove (25) is a through groove extending horizontally outward from the side wall surface of the height groove (24), the brush holder rod is a rectangular straight rod inserted into the position groove (25), the brush connecting rod connects the paper separation brush (23) and the inner end of the brush holder rod, and the sticking groove push plate (26) is a panel extending outward from the outer end of the brush holder rod.

6. The automatic detection device for hydrogen fuel cell graphite bipolar plates according to claim 5, characterized in that, The vertical block (22) also has a blowing part for blowing the overlapping paper, which comprises an air inlet (27), a slow air pipe (28), a single air pipe and an air direction port (29), the air inlet (27) is a notch recessed from the outer side wall of the vertical block (22) to the inside, the outer end of the air inlet (27) is connected to a blower through an air pipe, the slow air pipe (28) is a through slot from the end of the air inlet (27) to the inner side wall of the vertical block (22) and gradually increases in width, the single air pipe is a straight slot extending upward from the end of the air inlet (27) and close to the inner side wall of the vertical block (22), the air direction port (29) is a circular through slot from the end of the single air pipe to the inner side wall of the vertical block (22), the outlet of the slow air pipe (28) also has a wind dispersing net, the wind dispersing net is distributed with wind dispersing holes, the wind dispersing holes are irregularly spaced on the wind dispersing net, and the paper arrangement air cylinder (210) is arranged on the table surface of the machine body, and the shaft end of the paper arrangement air cylinder (210) is connected to the outer side wall of the vertical block (22).

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