A flatness detection device and a detection method for the production of hydrogen fuel cell electrode membranes

Abstract

The present invention relates to the technical field of flatness detection devices, and discloses a flatness detection device and a detection method for the production of hydrogen fuel cell electrode membranes. The device includes a detection table, above which a support frame is horizontally slidably installed. The support frame is horizontally slidably installed along a straight line on the upper surface of the detection table, and a linear lifting device is fixedly installed on the support frame. For this flatness detection device, by setting a support seat, a detection rotating cylinder, a marking paper cylinder and a detection rod, when the support seat moves horizontally, the detection rotating cylinder rolls and drives the detection rod to rotate, so that the detection rod approaches the electrode membrane once at the same interval. When there is a protrusion at the position where the surface of the electrode membrane contacts the detection rod, the detection rod will be lifted up and contact the marking paper cylinder, thereby leaving a recording point on the marking paper cylinder, which can quickly record the number of protrusion positions on the electrode membrane. Moreover, since the contact between the detection rod and the electrode membrane is a point contact and the contact time is short, it can reduce the damage to the electrode membrane.

Description

Technical Field

[0001] The present invention relates to the technical field of flatness detection devices, and specifically to a flatness detection device and a detection method for the production of hydrogen fuel cell electrode membranes. Background Art

[0002] The electrode membrane is an important part of the membrane electrode of a hydrogen fuel cell, also known as a proton exchange membrane, which is one of the core parts of the membrane electrode. Its main function is to conduct protons. The flatness of the electrode membrane plays an important role in the performance, service life, consistency, and stability of the battery.

[0003] Chinese Patent CN116576805B discloses a flatness detection device for a hydrogen fuel cell membrane electrode. This device drives the detection component to move by setting a lifting mechanism and a translation mechanism to perform optoelectronic detection and physical display detection on the hydrogen fuel cell membrane electrode to obtain flatness data.

[0004] However, since the thickness of the electrode membrane is usually between 15 micrometers and 50 micrometers, when the spherical head at the bottom of the movable rod in the above device rolls on the surface of the electrode membrane, it is easy to damage the ion channels on the electrode membrane, and the proton conduction channel may be interrupted at the damaged part.

[0005] Normally, the working principle of the electrode membrane is that protons are conducted through the ion channels in the membrane. When the surface of the membrane is damaged due to friction, such as scratches or microcracks, the continuity of these channels is destroyed. When the spherical heads at the bottom of the densely arranged movable rods in the above device roll on the surface of the electrode membrane, since the thickness of the electrode membrane is usually between 15 micrometers and 50 micrometers, it is easy to cause damage due to the contact pressure. The spherical heads are easy to scratch the surface of the electrode membrane or cause the electrode membrane to deform, thus affecting the passing performance of the ion channels. Summary of the Invention

[0006] (I) Technical Problems to be Solved

[0007] In view of the deficiencies of the prior art, the present invention provides a flatness detection device and a detection method for the production of hydrogen fuel cell electrode membranes, which have the advantage of reducing damage to the electrode membrane during detection and solve the problems mentioned in the above background art.

[0008] (II) Technical Solutions

[0009] To solve the above technical problems, the present invention provides the following technical solutions:

[0010] A flatness detection device includes a detection table. Above the detection table, a support frame is horizontally slidably installed. The support frame is horizontally slidably installed on the upper surface of the detection table along a straight line. A linear lifting device is fixedly installed on the support frame. The driving end of the linear lifting device is fixedly connected to a detection mechanism. The detection mechanism includes a support seat, a detection rotating cylinder, a marking paper cylinder, and a detection rod. The support seat is fixedly installed at the driving end of the linear lifting device. The detection rotating cylinder is rotatably connected to the support seat. The marking paper cylinder is detachably installed inside the detection rotating cylinder and is rotatably connected to the detection rotating cylinder. The detection rod is slidably inserted on the detection rotating cylinder;

[0011] A rotating cylinder rotating mechanism and a paper cylinder rotating mechanism are arranged on the detection table. The rotating cylinder rotating mechanism includes a rotating cylinder driving gear and a rotating cylinder driving plate. The rotating cylinder driving gear is fixedly installed at one end of the detection rotating cylinder. The rotating cylinder driving plate is installed on the detection table. The paper cylinder rotating mechanism includes a paper cylinder driving gear and a paper cylinder driving plate. The paper cylinder driving gear is slidably installed at one end of the marking paper cylinder. The paper cylinder driving plate is installed on the detection table;

[0012] When the support frame slides horizontally, both the rotating cylinder driving gear and the paper cylinder driving gear roll in the moving direction of the support frame, causing the detection rotating cylinder and the marking paper cylinder to rotate accordingly. At the same time, when the paper cylinder driving gear moves, it drives the marking paper cylinder to move in the length direction of the detection rotating cylinder.

[0013] Preferably, the detection rod includes a fixed ring, a sliding rod, a round head, and a tracing pen. Installation holes are evenly formed on the side surface of the detection rotating cylinder. The fixed ring is fixedly installed inside the installation hole. The sliding rod is slidably sleeved inside the fixed ring. The round head is fixedly installed at one end of the sliding rod extending outside the detection rotating cylinder. The tracing pen is inserted and installed at the other end of the sliding rod. The detection rod further includes a chute, a spring groove, a telescopic spring, a connecting ring, and a return spring. The chute is formed at one end of the sliding rod away from the round head and is adaptively inserted with the tail of the tracing pen. The spring groove is formed inside the chute. One end of the telescopic spring is fixedly connected to the bottom of the spring groove, and the other end of the telescopic spring is fixedly connected to the tail of the tracing pen. The connecting ring is fixedly installed at one end of the sliding rod. Both ends of the return spring are fixedly connected to the fixed ring and the connecting ring respectively.

[0014] Preferably, the detection rotating cylinder includes an installation cylinder, a cylinder cover, and a metal buckle. One end of the installation cylinder and the cylinder cover is hingedly installed, and the other end of the installation cylinder and the cylinder cover is fixedly connected through the metal buckle. One end of the installation cylinder is fixedly installed with a fixed shaft, and the other end of the installation cylinder is rotatably installed with a rotating shaft. The other end of the fixed shaft is rotatably connected to one end of the support seat. The other end of the rotating shaft is sleeved on the other end of the support seat. Installation holes are formed on both the installation cylinder and the cylinder cover.

[0015] Preferably, the detection mechanism further includes a paper tube disassembly and assembly mechanism, which includes a circular block, a cylinder, a support spring, a polygonal clamping block, an insertion block, and a limit spring. The circular block is fixedly installed on the inner wall of one side of the installation cylinder, and a circular groove is opened at one end of the circular block. The open end of the cylinder is slidably sleeved with the circular block. One end of the support spring is fixedly installed inside the circular groove, and the other end of the support spring is fixedly connected to the inner wall of one side of the cylinder. The polygonal clamping block is fixedly connected to one end of the rotating shaft. The arc surface of the circular block is symmetrically provided with clamping grooves. The insertion block is slidably inserted into the clamping grooves. One end of the limit spring is fixedly connected to the bottom of the clamping groove, and the other end of the limit spring is fixedly connected to the bottom of the insertion block. The outer surface of the cylinder is symmetrically provided with straight notches, and the inner surface of the cylinder is provided with a tapered notch. The upper end of the tapered notch communicates with the lower end of the straight notch. The insertion block penetrates through the tapered notch and is slidably connected to the straight notch, and the side wall of the insertion block abuts against the inner walls on both sides of the straight notch. One end of the marking paper tube is provided with a circular insertion slot, and the other end of the marking paper tube is provided with a polygonal insertion slot. The circular insertion slot is adaptively inserted with the end of the cylinder away from the circular block, and the polygonal insertion slot is adaptively inserted with the end of the polygonal clamping block away from the rotating shaft. The outer surface of the marking paper tube is provided with a sticker slot.

[0016] Preferably, the rotating cylinder driving gear is fixedly installed at one end of the fixed shaft. A rotating cylinder driving slide hole is opened on the rotating cylinder driving plate, and a rotating cylinder driving rack is fixedly installed on the upper surface of the rotating cylinder driving plate. One end of the support seat is slidably installed inside the rotating cylinder driving slide hole, and the rotating cylinder driving gear is meshed with the rotating cylinder driving rack.

[0017] Preferably, the paper tube driving gear is rotatably installed on the inner wall of the other side of the support seat, and the paper tube driving gear is installed on the rotating shaft. A paper tube rotation driving slide hole is opened on the paper tube driving plate, and a paper tube rotation driving rack is fixedly installed on the lower surface of the paper tube driving plate. The other end of the support seat is slidably installed inside the paper tube rotation driving slide hole, and the paper tube driving gear is meshed with the paper tube rotation driving rack.

[0018] Preferably, a fixed slider is slidably installed in the shaft hole of the paper tube driving gear. The fixed slider is fixedly installed on the rotating shaft. The rotating shaft slidably penetrates through the other end of the support seat and is rotatably connected to the other end of the support seat. A paper tube transverse movement driving slide hole is also opened on the paper tube driving plate. A sliding block is slidably installed inside the paper tube transverse movement driving slide hole. A connecting rod is fixedly installed at the lower end of the sliding block, and the connecting rod is rotatably connected to the rotating shaft.

[0019] Preferably, a guide rod is also fixedly installed on the detection table, and the rotating cylinder driving plate and the paper tube driving plate are respectively slidably connected to the corresponding guide rods.

[0020] Preferably, the detection mechanism further includes a laser emitter mounting plate and a laser receiver mounting plate. One end of the laser emitter mounting plate is fixedly mounted with optical signal emitters at equal intervals. One end of the laser receiver mounting plate is fixedly mounted with an optical signal receiver. The two ends of the laser emitter mounting plate are respectively fixedly connected to one end of the lower surfaces of the rotating cylinder drive plate and the paper tube drive plate. The two ends of the laser receiver mounting plate are respectively fixedly connected to the other end of the lower surfaces of the rotating cylinder drive plate and the paper tube drive plate. A through hole is formed in the sliding rod.

[0021] The present invention also discloses a detection method for the production of a hydrogen fuel cell electrode membrane, and the specific steps are as follows:

[0022] Place and fix the hydrogen fuel cell electrode membrane to be detected on the detection table;

[0023] Adjust the height of the detection mechanism through a linear lifting device so that the distance between the detection rod at the lower end of the detection rotating cylinder and the upper surface of the detection table is the same as the thickness of the hydrogen fuel cell electrode membrane when the detection rod is in a vertical state;

[0024] Control the linear movement of the support frame in the horizontal direction so that the detection mechanism approaches the hydrogen fuel cell electrode membrane, and make the detection rods installed at different positions on the detection rotating cylinder approach different positions on the upper surface of the hydrogen fuel cell electrode membrane in sequence;

[0025] When the upper surface of the hydrogen fuel cell electrode membrane bulges upward, the detection rod close to the hydrogen fuel cell electrode membrane contacts and is pushed up by the hydrogen fuel cell electrode membrane, so that the detection rod leaves a marking point on the marking paper tube.

[0026] (III) Beneficial effects

[0027] Compared with the prior art, the present invention provides a flatness detection device and a detection method for the production of a hydrogen fuel cell electrode membrane, and has the following beneficial effects:

[0028] 1. For this flatness detection device, by setting the support base, detection rotating cylinder, marking paper tube and detection rod, when the support base moves horizontally, the detection rotating cylinder rolls and drives the detection rod to rotate, so that the detection rod approaches the electrode membrane once every equal distance. When there is a bulge at the position where the electrode membrane surface contacts the detection rod, the detection rod will be pushed up and contact the marking paper tube, thus leaving a recording point on the marking paper tube. It can quickly record the number of bulge positions on the electrode membrane. Moreover, since the contact between the detection rod and the electrode membrane is a point contact and the contact time is short, it can reduce the damage to the electrode membrane. At the same time, since the marking paper tube can rotate and slowly move to one side when the support frame moves horizontally, the detection rod will not contact the same position on the marking paper tube, avoiding marking at the same position on the marking paper tube by the detection rod.

[0029] 2. For this flatness detection device, by providing a rotary cylinder drive slide hole and a rotary cylinder drive rack on the rotary cylinder drive plate, the rotary cylinder drive plate can move up and down along with the support base. Meanwhile, when the support base translates, the rotary cylinder drive gear rolls on the rotary cylinder drive rack, thereby driving the detection rotary cylinder to rotate. By providing a paper tube rotation drive slide hole and a paper tube rotation drive rack on the paper tube drive plate, the marking paper tube can move up and down along with the support base. Meanwhile, when the support base translates, the paper tube drive gear rolls on the paper tube drive rack, thereby driving the marking paper tube to rotate. Additionally, by providing a paper tube lateral movement drive slide hole on the paper tube drive plate and rotatably mounting a sliding block on the rotating shaft, when the support base translates, the marking paper tube can move to one side while rotating.

[0030] 3. For this flatness detection device, by providing an optical signal transmitter, an optical signal receiver, and a through hole, when the lowermost detection rod is in a vertical state, only when the height of the contact position between the electrode film and the detection rod is equal to the distance between the detection rod and the upper surface of the detection table can the optical signal pass through the through hole and be received by the optical signal receiver, thereby directly obtaining information on whether the electrode film is flat at this position. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is one of the three-dimensional structure schematic diagrams of the flatness detection device of the present invention;

[0032] Figure 2 is the second of the three-dimensional structure schematic diagrams of the flatness detection device of the present invention;

[0033] Figure 3 is the third of the three-dimensional structure schematic diagrams of the flatness detection device of the present invention;

[0034] Figure 4 is the fourth of the three-dimensional structure schematic diagrams of the flatness detection device of the present invention;

[0035] Figure 5 is the fifth of the three-dimensional structure schematic diagrams of the flatness detection device of the present invention;

[0036] Figure 6 is the sixth of the three-dimensional structure schematic diagrams of the flatness detection device of the present invention;

[0037] Figure 7 is the seventh of the three-dimensional structure schematic diagrams of the flatness detection device of the present invention;

[0038] Figure 8 of the present invention Figure 7 is the enlarged schematic diagram of the partial structure at A in;

[0039] Figure 9 of the present invention Figure 7 is the enlarged schematic diagram of the partial structure at B in;

[0040] Figure 10 For the present invention Figure 7 is a schematic enlarged view of the local structure at position C in the present invention.

[0041] In the figure:

[0042] 1. Detection table;

[0043] 2. Support frame;

[0044] 3. Detection mechanism; 31. Support base; 32. Detection rotating cylinder; 321. Installation cylinder; 322. Cylinder cover; 323. Metal buckle; 33. Marking paper cylinder; 331. Circular slot; 332. Polygonal slot; 333. Sticker slot; 34. Detection rod; 341. Fixed ring; 342. Slide bar; 343. Round head; 344. Line drawing pen; 345. Slide groove; 346. Spring groove; 347. Telescopic spring; 348. Connecting ring; 349. Return spring; 35. Fixed shaft; 36. Rotating shaft; 37. Paper cylinder disassembly and assembly mechanism; 371. Circular block; 372. Cylinder; 373. Support spring; 374. Polygonal block; 375. Insert block; 376. Limit spring; 377. Circular groove; 378. Card slot; 379. Straight slot; 3710. Conical slot; 38. Installation hole; 39. Laser emitter mounting plate; 310. Laser receiver mounting plate; 311. Through hole;

[0045] 4. Rotating cylinder rotation mechanism; 41. Rotating cylinder drive gear; 42. Rotating cylinder drive plate; 421. Rotating cylinder drive slide hole; 422. Rotating cylinder drive rack;

[0046] 5. Paper cylinder rotation mechanism; 51. Paper cylinder drive gear; 511. Fixed slider; 52. Paper cylinder drive plate; 521. Paper cylinder rotation drive slide hole; 522. Paper cylinder lateral movement drive slide hole; 523. Paper cylinder rotation drive rack; 524. Slide block; 525. Connecting rod;

[0047] 6. Linear lifting device;

[0048] 7. Guide rod. Specific embodiments

[0049] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0050] Embodiment 1

[0051] Please refer to Figure 1 - Figure 5, the present invention provides a flatness detection device, which includes a detection table 1. Above the detection table 1, a support frame 2 is horizontally slidably installed. The support frame 2 is horizontally slidably installed on the upper surface of the detection table 1 along a straight line. A linear lifting device 6 is fixedly installed on the support frame 2. The driving end of the linear lifting device 6 is fixedly connected to a detection mechanism 3. The detection mechanism 3 includes a support seat 31, a detection rotating cylinder 32, a marking paper cylinder 33, and a detection rod 34. The support seat 31 is fixedly installed at the driving end of the linear lifting device 6. The detection rotating cylinder 32 is rotatably connected to the support seat 31. The marking paper cylinder 33 is detachably installed inside the detection rotating cylinder 32 and is rotatably connected to the detection rotating cylinder 32. The detection rod 34 is slidably inserted on the detection rotating cylinder 32;

[0052] A rotating cylinder rotating mechanism 4 and a paper cylinder rotating mechanism 5 are arranged on the detection table 1. The rotating cylinder rotating mechanism 4 includes a rotating cylinder driving gear 41 and a rotating cylinder driving plate 42. The rotating cylinder driving gear 41 is fixedly installed at one end of the detection rotating cylinder 32. The rotating cylinder driving plate 42 is installed on the detection table 1. The paper cylinder rotating mechanism 5 includes a paper cylinder driving gear 51 and a paper cylinder driving plate 52. The paper cylinder driving gear 51 is slidably installed at one end of the marking paper cylinder 33. The paper cylinder driving plate 52 is installed on the detection table 1;

[0053] When the support frame 2 slides horizontally, both the rotating cylinder driving gear 41 and the paper cylinder driving gear 51 roll in the moving direction of the support frame 2, causing the detection rotating cylinder 32 and the marking paper cylinder 33 to rotate accordingly. At the same time, when the paper cylinder driving gear 51 moves, it drives the marking paper cylinder 33 to move in the length direction of the detection rotating cylinder 32.

[0054] As can be seen from the above, in this flatness detection device, by setting the support seat 31, the detection rotating cylinder 32, the marking paper cylinder 33, and the detection rod 34, when the support seat 31 moves horizontally, the detection rotating cylinder 32 rolls and drives the detection rod 34 to rotate, so that the detection rod 34 approaches the electrode film once every same distance. When there is a protrusion at the position where the surface of the electrode film contacts the detection rod 34, the detection rod 34 will be pushed up and contact the marking paper cylinder 33, thereby leaving a recording point on the marking paper cylinder 33, which can quickly record the number of protrusion positions on the electrode film. Moreover, since the contact between the detection rod 34 and the electrode film is a point contact and the contact time is short, it can reduce the damage to the electrode film. At the same time, since the marking paper cylinder 33 can rotate and move slowly to one side when the support seat 31 translates, the detection rod 34 will not contact the same position on the marking paper cylinder 33, avoiding the detection rod 34 from marking the same position on the marking paper cylinder 33.

[0055] When using this device, place and fix the hydrogen fuel cell electrode membrane to be detected on the detection table 1; adjust the height of the detection mechanism 3 through the linear lifting device 6 so that the distance between the detection rod 34 at the lower end of the detection drum 32 and the upper surface of the detection table 1 is the same as the thickness of the hydrogen fuel cell electrode membrane when the detection rod 34 is in a vertical state; control the linear movement of the support frame 2 in the horizontal direction so that the detection mechanism 3 approaches the hydrogen fuel cell electrode membrane, and the detection rods 34 installed at different positions on the detection drum 32 successively approach different positions on the upper surface of the hydrogen fuel cell electrode membrane; when the upper surface of the hydrogen fuel cell electrode membrane bulges upward, the detection rod 34 close to the hydrogen fuel cell electrode membrane contacts and is lifted by the hydrogen fuel cell electrode membrane, so that the detection rod 34 leaves a marking point on the marking paper tube 33.

[0056] Embodiment 2

[0057] As Figure 4 、 Figure 5 、 Figure 7 、 Figure 8 and Figure 9 shown, the difference between this embodiment and the above embodiment is that the detection rod 34 includes a fixing ring 341, a sliding rod 342, a round head 343 and a tracing pen 344. Installation holes 38 are evenly formed on the side surface of the detection drum 32. The fixing ring 341 is fixedly installed inside the installation hole 38. The sliding rod 342 is slidably sleeved inside the fixing ring 341. The round head 343 is fixedly installed at one end of the sliding rod 342 extending outside the detection drum 32. The tracing pen 344 is inserted and installed at the other end of the sliding rod 342. The detection rod 34 further includes a chute 345, a spring groove 346, a telescopic spring 347, a connecting ring 348 and a return spring 349. The chute 345 is formed at one end of the sliding rod 342 away from the round head 343, and the chute 345 is adaptively inserted with the tail of the tracing pen 344. The spring groove 346 is formed inside the chute 345. One end of the telescopic spring 347 is fixedly connected to the bottom of the spring groove 346, and the other end of the telescopic spring 347 is fixedly connected to the tail of the tracing pen 344. The connecting ring 348 is fixedly installed at one end of the sliding rod 342. Both ends of the return spring 349 are fixedly connected to the fixing ring 341 and the connecting ring 348 respectively.

[0058] As can be seen from the above, by setting the telescopic spring 347 and the return spring 349, when the round head 343 does not contact the electrode membrane, the return spring 349 can support the sliding rod 342 to prevent the sliding rod 342 from sliding randomly. When the tracing pen 344 contacts the marking paper tube 33, the tail end of the tracing pen 344 can squeeze the telescopic spring 347 to prevent the tracing pen 344 from scratching the recording paper fixed on the marking paper tube 33 due to the large bulge amplitude of the electrode membrane.

[0059] The detection drum 32 includes a mounting cylinder 321, a cylinder cover 322 and a metal buckle 323. One end of the mounting cylinder 321 and the cylinder cover 322 is hingedly installed, and the other ends of the mounting cylinder 321 and the cylinder cover 322 are fixedly connected by the metal buckle 323. One end of the mounting cylinder 321 is fixedly installed with a fixed shaft 35, and the other end of the mounting cylinder 321 is rotatably installed with a rotating shaft 36. The other end of the fixed shaft 35 is rotatably connected to one end of the support base 31, and the other end of the rotating shaft 36 is sleeved on the other end of the support base 31. Mounting holes 38 are provided on both the mounting cylinder 321 and the cylinder cover 322.

[0060] As can be seen from the above, the metal buckle 323 mentioned in this embodiment is a buckle commonly used in the prior art to close the box body. Its purpose is to prevent the detection drum 32 from accidentally opening during rotation. By setting the fixed shaft 35 and the rotating shaft 36, the detection drum 32 can be supported to avoid tilting of the detection drum 32. At the same time, since the fixed shaft 35 is fixedly connected to one end of the mounting cylinder 321, the detection drum 32 can be driven to rotate through the fixed shaft 35.

[0061] The detection mechanism 3 further includes a paper tube disassembly and assembly mechanism 37. The paper tube disassembly and assembly mechanism 37 includes a circular block 371, a cylinder 372, a support spring 373, a polygonal block 374, an insertion block 375, and a limit spring 376. The circular block 371 is fixedly installed on one side inner wall of the mounting cylinder 321, and a circular groove 377 is provided at one end of the circular block 371. The open end of the cylinder 372 is slidably sleeved with the circular block 371. One end of the support spring 373 is fixedly installed inside the circular groove 377, and the other end of the support spring 373 is fixedly connected to one side inner wall of the cylinder 372. The polygonal block 374 is fixedly connected to one end of the rotating shaft 36. The arc surface of the circular block 371 is symmetrically provided with card slots 378. The insertion block 375 is slidably inserted into the card slots 378. One end of the limit spring 376 is fixedly connected to the bottom of the card slot 378, and the other end of the limit spring 376 is fixedly connected to the bottom of the insertion block 375. The outer side surface of the cylinder 372 is symmetrically provided with straight slots 379, and the inner side surface of the cylinder 372 is provided with a tapered slot 3710. The upper end of the tapered slot 3710 communicates with the lower end of the straight slot 379. The insertion block 375 passes through the tapered slot 3710 and is slidably connected to the straight slot 379, and the side wall of the insertion block 375 abuts against the inner walls on both sides of the straight slot 379. One end of the marking paper tube 33 is provided with a circular insertion slot 331, and the other end of the marking paper tube 33 is provided with a polygonal insertion slot 332. The circular insertion slot 331 is adaptively inserted into the end of the cylinder 372 away from the circular block 371, and the polygonal insertion slot 332 is adaptively inserted into the end of the polygonal block 374 away from the rotating shaft 36. A sticker slot 333 is provided on the outer side surface of the marking paper tube 33.

[0062] As can be seen from the above, since the two ends of the marking paper tube 33 are respectively provided with a circular slot 331 and a polygonal slot 332, the polygonal block 374 can drive the marking paper tube 33 to rotate, and the cylinder 372 only plays the role of supporting the marking paper tube 33; due to the arrangement of the circular block 371, the cylinder 372 and the supporting spring 373, the marking paper tube 33 is clamped between the cylinder 372 and the polygonal block 374, and when the polygonal block 374 moves in a direction away from the cylinder 372, the supporting spring 373 can push the marking paper tube 33 to move in the direction of the polygonal block 374; In addition, due to the arrangement of the plug block 375, the limit spring 376, the straight slot 379 and the tapered slot 3710, when the device is subjected to a lateral impact causing the plug block 375 to slide, the plug block 375 is blocked by the inner wall of the straight slot 379 and cannot be detached from the straight slot 379. Only by pressing the plug block 375 so that the upper end of the plug block 375 is disengaged from the straight slot 379, can the cylinder 372 continue to approach the circular block 371 through the tapered slot 3710, thereby expanding the distance between the cylinder 372 and the polygonal block 374 to a degree that allows the marking paper tube 33 to be disengaged.

[0063] Embodiment 3

[0064] like Figure 3 , Figure 4 , Figure 6 and Figure 10 As shown, the difference between this embodiment and the above embodiment lies in that a drum driving gear 41 is fixedly mounted on one end of a fixed shaft 35, a drum driving sliding hole 421 is provided on a drum driving plate 42, and a drum driving rack 422 is fixedly mounted on the upper surface of the drum driving plate 42, one end of the support seat 31 is slidably mounted inside the drum driving sliding hole 421, and the drum driving gear 41 is meshingly connected with the drum driving rack 422.

[0065] As can be seen from the above, when the support seat 31 translates, due to the meshing connection between the drum driving gear 41 and the drum driving rack 422 , the detection drum 32 rotates along with the drum driving gear 41 .

[0066] The paper drum driving gear 51 is rotatably mounted on the inner wall of the other side of the support seat 31, and the paper drum driving gear 51 is installed on the rotating shaft 36. A paper drum rotation driving sliding hole 521 is opened on the paper drum driving plate 52, and a paper drum rotation driving rack 523 is fixedly mounted on the lower surface of the paper drum driving plate 52. The other end of the support seat 31 is slidably mounted inside the paper drum rotation driving sliding hole 521, and the paper drum driving gear 51 is meshedly connected with the paper drum rotation driving rack 523.

[0067] As can be seen from the above, when the support seat 31 translates, the marking paper roll 33 rotates along with the paper roll driving gear 51 due to the meshing connection between the paper roll driving gear 51 and the paper roll rotation driving rack 523 .

[0068] A fixed slider 511 is slidably installed in the shaft hole of the paper tube drive gear 51. The fixed slider 511 is fixedly installed on the rotating shaft 36. The rotating shaft 36 slidably penetrates through the other end of the support base 31 and is rotatably connected to the other end of the support base 31. A paper tube transverse movement drive slide hole 522 is also formed in the paper tube drive plate 52. A slide block 524 is slidably installed inside the paper tube transverse movement drive slide hole 522. A connecting rod 525 is fixedly installed at the lower end of the slide block 524. The connecting rod 525 is rotatably connected to the rotating shaft 36.

[0069] As can be seen from the above, since the fixed slider 511 is fixedly installed on the rotating shaft 36 and is slidably connected to the paper tube drive gear 51, when the paper tube drive gear 51 drives the rotating shaft 36 to rotate, the rotating shaft 36 can also linearly move along its length direction. Since the paper tube transverse movement drive slide hole 522 is provided on the paper tube drive plate 52, the paper tube transverse movement drive slide hole 522 in this embodiment is a through hole with a parallelogram upper surface. When the slide block 524 slides on the paper tube transverse movement drive slide hole 522, the slide block 524 can pull the rotating shaft 36 to move to one side, thereby driving the marking paper tube 33 to translate.

[0070] A guide rod 7 is also fixedly installed on the detection table 1. The rotating cylinder drive plate 42 and the paper tube drive plate 52 are respectively slidably connected to the corresponding guide rod 7.

[0071] As can be seen from the above, by providing the guide rod 7, the rotating cylinder drive plate 42 and the paper tube drive plate 52 can only translate up and down and cannot move horizontally. When the support base 31 translates, the gears can be meshed and driven with the corresponding toothed plates.

[0072] Embodiment 4

[0073] As Figure 2 shown, the difference between this embodiment and the above embodiment is that the detection mechanism 3 further includes a laser emitter mounting plate 39 and a laser receiver mounting plate 310. An optical signal emitter is fixedly installed at equal intervals at one end of the laser emitter mounting plate 39. An optical signal receiver is fixedly installed at one end of the laser receiver mounting plate 310. The two ends of the laser emitter mounting plate 39 are respectively fixedly connected to one end of the lower surfaces of the rotating cylinder drive plate 42 and the paper tube drive plate 52. The two ends of the laser receiver mounting plate 310 are respectively fixedly connected to the other end of the lower surfaces of the rotating cylinder drive plate 42 and the paper tube drive plate 52. A through hole 311 is formed in the slide rod 342.

[0074] As can be seen from the above, by providing the laser emitter mounting plate 39, the laser receiver mounting plate 310 and the through hole 311, (since the optical signal emitter and the optical signal receiver are both commonly used products in the prior art and the volume of a single product is very small, they are not shown in the figure), when the lowermost detection rod 34 is in the vertical state, only when the height of the contact position between the electrode film and the detection rod 34 is equal to the distance from the detection rod 34 to the upper surface of the detection table 1, can the optical signal pass through the through hole 311 and be received by the optical signal receiver, so as to directly obtain the information on whether the electrode film is flat at this position.

[0075] Embodiment 5

[0076] Please refer to Figure 1 - Figure 10 , the present invention also discloses a detection method for the production of a hydrogen fuel cell electrode film, and the specific steps are as follows:

[0077] Place and fix the hydrogen fuel cell electrode film to be detected on the detection table 1;

[0078] Adjust the height of the detection mechanism 3 through the linear lifting device 6 so that the distance from the lower end of the detection drum 32 to the upper surface of the detection table 1 when the detection rod 34 is in the vertical state is the same as the thickness of the hydrogen fuel cell electrode film;

[0079] Control the linear movement of the support frame 2 in the horizontal direction so that the detection mechanism 3 approaches the hydrogen fuel cell electrode film, and make the detection rods 34 installed at different positions on the detection drum 32 approach different positions on the upper surface of the hydrogen fuel cell electrode film in turn;

[0080] When the upper surface of the hydrogen fuel cell electrode film bulges upward, the detection rod 34 close to the hydrogen fuel cell electrode film contacts and is lifted by the hydrogen fuel cell electrode film, so that the detection rod 34 leaves a marking point on the marking paper cylinder 33.

[0081] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirits of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A flatness detection device, comprising a detection platform, characterized in that: A support frame is installed horizontally and slidably above the detection platform, and the support frame is installed on the upper surface of the detection platform along a straight line and horizontally and slidably. A linear lifting device is fixedly installed on the support frame, and a detection mechanism is fixedly connected to the driving end of the linear lifting device. The detection mechanism includes a support seat, a detection drum, a marking paper drum and a detection rod. The support seat is fixedly installed on the driving end of the linear lifting device, and the detection drum is rotatably connected to the support seat. The marking paper drum is detachably installed inside the detection drum, and the marking paper drum is rotatably connected to the detection drum, and the detection rod is slidably plugged into the detection drum; The detection platform is provided with a drum rotating mechanism and a paper drum rotating mechanism, the drum rotating mechanism includes a drum driving gear and a drum driving plate, the drum driving gear is fixedly mounted on one end of the detection drum, the drum driving plate is mounted on the detection platform, the paper drum rotating mechanism includes a paper drum driving gear and a paper drum driving plate, the paper drum driving gear is slidably mounted on one end of the marking paper drum, and the paper drum driving plate is mounted on the detection platform; When the support frame slides horizontally, the drum driving gear and the paper drum driving gear both roll in the moving direction of the support frame, so that the detection drum and the marking paper drum rotate accordingly. At the same time, when the paper drum driving gear moves, it drives the marking paper drum to move in the length direction of the detection drum. The detection rod includes a fixing ring, a sliding rod, a round head and a tracing pen. The side of the detection cylinder is evenly provided with mounting holes. The fixing ring is fixedly installed inside the mounting hole. The sliding rod is slidably sleeved inside the fixing ring. The round head is fixedly installed on one end of the sliding rod extending to the outside of the detection cylinder. The tracing pen is plugged into the other end of the sliding rod. The detection rod also includes a sliding groove, a spring groove, a telescopic spring, a connecting ring and a reset spring. The sliding groove is opened at the end of the sliding rod away from the round head, and the sliding groove is adapted to be plugged into the tail of the tracing pen. The spring groove is opened inside the sliding groove. One end of the telescopic spring is fixedly connected to the bottom of the spring groove, and the other end of the telescopic spring is fixedly connected to the tail of the tracing pen. The connecting ring is fixedly installed at one end of the sliding rod, and the two ends of the reset spring are respectively fixedly connected to the fixing ring and the connecting ring.

2. A flatness detection device according to claim 1, characterized in that: The detection rotating cylinder includes a mounting cylinder, a cylinder cover and a metal buckle. One end of the mounting cylinder and the cylinder cover are hingedly mounted, and the other end of the mounting cylinder and the cylinder cover are fixedly connected by a metal buckle. A fixed shaft is fixedly mounted on one end of the mounting cylinder, and a rotating shaft is rotatably mounted on the other end of the mounting cylinder. The other end of the fixed shaft is rotatably connected to one end of a supporting seat, and the other end of the rotating shaft is sleeved on the other end of the supporting seat. Both the mounting cylinder and the cylinder cover are provided with mounting holes.

3. A flatness detection device according to claim 2, characterized in that: The detection mechanism also includes a paper tube disassembly and assembly mechanism, which includes a circular block, a cylinder, a supporting spring, a polygonal block, an insert block, and a limit spring. The circular block is fixedly mounted on an inner wall of one side of the mounting cylinder, and a circular groove is provided at one end of the circular block. The open end of the cylinder is slidably sleeved with the circular block. One end of the supporting spring is fixedly mounted inside the circular groove, and the other end of the supporting spring is fixedly connected to an inner wall of one side of the cylinder. The polygonal block is fixedly connected to one end of the rotating shaft. The arc surface of the circular block is symmetrically provided with a slot, the insert block is slidably inserted into the slot, and one end of the limit spring is fixedly connected to the bottom of the slot. The outer side surface of the cylinder is symmetrically provided with straight slots, the inner side surface of the cylinder is provided with a conical slot, the upper end of the conical slot is connected to the lower end of the straight slot, the plug block passes through the conical slot and is slidably connected to the straight slot, and the side wall of the plug block abuts against the inner walls of the straight slot on both sides, one end of the marking paper tube is provided with a circular slot, and the other end of the marking paper tube is provided with a polygonal slot, the circular slot is adapted to be plugged with one end of the cylinder away from the circular block, the polygonal slot is adapted to be plugged with one end of the polygonal block away from the rotating shaft, and the outer side surface of the marking paper tube is provided with a sticker slot.

4. A flatness detection device according to claim 3, characterized in that: The drum driving gear is fixedly mounted on one end of the fixed shaft, a drum driving sliding hole is provided on the drum driving plate, and a drum driving rack is fixedly mounted on the upper surface of the drum driving plate, one end of the support seat is slidably mounted inside the drum driving sliding hole, and the drum driving gear is meshingly connected with the drum driving rack.

5. A flatness detection device according to claim 1, characterized in that: The paper drum driving gear is rotatably mounted on the inner wall of the other side of the support seat, and the paper drum driving gear is mounted on the rotating shaft. A paper drum rotation driving sliding hole is opened on the paper drum driving plate, and a paper drum rotation driving rack is fixedly mounted on the lower surface of the paper drum driving plate. The other end of the support seat is slidably mounted inside the paper drum rotation driving sliding hole, and the paper drum driving gear is meshedly connected with the paper drum rotation driving rack.

6. A flatness detection device according to claim 1, characterized in that: A fixed slider is slidably installed in the shaft hole of the paper roll driving gear, and the fixed slider is fixedly installed on the rotating shaft. The rotating shaft slides through the other end of the support seat and is rotatably connected to the other end of the support seat. A paper roll transverse driving sliding hole is also provided on the paper roll driving plate, and a sliding block is slidably installed inside the paper roll transverse driving sliding hole. A connecting rod is fixedly installed on the lower end of the sliding block, and the connecting rod is rotatably connected to the rotating shaft.

7. A flatness detection device according to claim 1, characterized in that: The detection platform is also fixedly mounted with guide rods, and the rotating drum driving plate and the paper drum driving plate are respectively slidably connected with the corresponding guide rods.

8. A flatness detection device according to claim 1, characterized in that: The detection mechanism also includes a laser transmitter mounting plate and a laser receiver mounting plate, an optical signal transmitter is fixedly mounted at an equal distance on one end of the laser transmitter mounting plate, an optical signal receiver is fixedly mounted on one end of the laser receiver mounting plate, both ends of the laser transmitter mounting plate are respectively fixedly connected to one end of the lower surface of the rotating drum driving plate and the paper drum driving plate, and both ends of the laser receiver mounting plate are respectively fixedly connected to the other end of the lower surface of the rotating drum driving plate and the paper drum driving plate, and a through hole is opened on the sliding rod.

9. A method for detecting the production of a hydrogen fuel cell electrode membrane, using a flatness detection device as claimed in any one of claims 1 to 8, characterized in that: The specific steps are: Placing and fixing the hydrogen fuel cell electrode membrane to be tested on the testing table; The height of the detection mechanism is adjusted by a linear lifting device so that the distance between the detection rod at the lower end of the detection drum and the upper surface of the detection table in a vertical state is the same as the thickness of the hydrogen fuel cell electrode membrane; Control the support frame to move linearly in the horizontal direction, so that the detection mechanism approaches the hydrogen fuel cell electrode membrane, and the detection rods installed at different positions on the detection drum approach different positions on the upper surface of the hydrogen fuel cell electrode membrane in turn; When the upper surface of the hydrogen fuel cell electrode membrane bulges upward, the detection rod close to the hydrogen fuel cell electrode membrane contacts the hydrogen fuel cell electrode membrane and is lifted up, so that the detection rod leaves a marking point on the marking paper tube.

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