Flatness detection device and detection method for hydrogen fuel cell electrode membrane production

Abstract

The invention relates to the technical field of flatness detection devices, and discloses a flatness detection device and a detection method for hydrogen fuel cell electrode membrane production.The flatness detection device comprises a detection table, a supporting frame is horizontally installed above the detection table in a sliding mode, and the supporting frame is horizontally installed on the upper surface of the detection table in a sliding mode along a straight line; linear lifting equipment is fixedly mounted on the support frame; according to the flatness detection device, through arrangement of the supporting seat, the detection rotary drum, the marking paper tube and the detection rod, when the supporting seat translates, the detection rotary drum rolls and drives the detection rod to rotate, so that the detection rod is close to an electrode film once at equal intervals, and when the contact position of the surface of the electrode film and the detection rod has a bulge, the detection rod cannot be damaged; the detection rod is jacked up to be in contact with the marking paper tube, so that recording points are left on the marking paper tube, the number of the positions of the protrusions on the electrode film can be rapidly recorded, and damage to the electrode film can be reduced due to the fact that the detection rod is in point contact with the electrode film, and the contact time is short.

Description

Technical Field

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

[0002] The electrode membrane is an important component of the hydrogen fuel cell membrane electrode, also called the proton exchange membrane. It 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 battery performance, battery life, battery consistency and stability.

[0003] Chinese patent CN116576805B discloses a hydrogen fuel cell membrane electrode flatness detection device, which drives the detection component to move by setting a lifting mechanism and a translation mechanism, performs photoelectric 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 microns and 50 microns, 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, so that the proton conduction channel may be interrupted at the damaged location.

[0005] Under normal circumstances, the working principle of the electrode membrane is that protons are conducted through the ion channels in the membrane. When the membrane surface is damaged by friction, such as scratches or tiny cracks, 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, the thickness of the electrode membrane is usually between 15 microns and 50 microns, which is easy to be damaged due to contact pressure. The spherical heads are easy to scratch the surface of the electrode membrane or deform the electrode membrane, thereby affecting the passing performance of the ion channels. Summary of the invention

[0006] 1. Technical issues to be resolved

[0007] In view of the deficiencies in the prior art, the present invention provides a flatness detection device and a method for detecting 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 technology.

[0008] (II) Technical solution

[0009] In order to solve the above technical problems, the present invention provides the following technical solutions: A flatness detection device comprises a detection platform, a support frame is horizontally slidably mounted above the detection platform, the support frame is horizontally slidably mounted on the upper surface of the detection platform along a straight line, a linear lifting device is fixedly mounted on the support frame, a driving end of the linear lifting device is fixedly connected with a detection mechanism, the detection mechanism comprises a support seat, a detection rotating drum, a marking paper drum and a detection rod, the support seat is fixedly mounted on the driving end of the linear lifting device, the detection rotating drum is rotatably connected to the support seat, the marking paper drum is detachably mounted inside the detection rotating drum, and the marking paper drum is rotatably connected to the detection rotating drum, and the detection rod is slidably plugged on the detection rotating 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.

[0010] Preferably, 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 at 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.

[0011] Preferably, the detection rotary 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, one end of the mounting cylinder is fixedly mounted with a fixed shaft, and the other end of the mounting cylinder is rotatably mounted with a rotating shaft, the other end of the fixed shaft is rotatably connected to one end of a support seat, and the other end of the rotating shaft is sleeved on the other end of the support seat, and mounting holes are provided on the mounting cylinder and the cylinder cover.

[0012] Preferably, 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. A slot is symmetrically provided on an arcuate surface of the circular block. The insert block is slidably inserted into the inside of the slot, and one end of the limit spring is fixedly mounted on the bottom of the slot. The cylinder is fixedly connected, and the other end of the limit spring is fixedly connected to the bottom of the plug block, 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 two sides of the straight slot, 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.

[0013] Preferably, 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.

[0014] Preferably, 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 meshingly connected with the paper drum rotation driving rack.

[0015] Preferably, 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.

[0016] Preferably, a guide rod is fixedly mounted on the detection platform, and the rotating drum driving plate and the paper drum driving plate are respectively slidably connected to the corresponding guide rod.

[0017] Preferably, 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.

[0018] The present invention also discloses a method for detecting the production of a hydrogen fuel cell electrode membrane, the specific steps of which 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.

[0019] (III) Beneficial effects

[0020] Compared with the prior art, the present invention provides a flatness detection device and a method for detecting the production of hydrogen fuel cell electrode membranes, which have the following beneficial effects: 1. The flatness detection device is provided with a support seat, a detection drum, a marking paper tube and a detection rod. When the support seat translates, the detection drum rolls and drives the detection rod to rotate, so that the detection rod approaches the electrode membrane once at the same interval. When a bulge appears at the position where the electrode membrane surface contacts the detection rod, the detection rod will be lifted up and contact the marking paper tube, thereby leaving a recording point on the marking paper tube, and the number of bulge positions on the electrode membrane can be quickly recorded. In addition, since there is point contact between the detection rod and the electrode membrane, the contact time is short, which can reduce damage to the electrode membrane. At the same time, since the marking paper tube can rotate and move slowly to one side when the support frame translates, the detection rod will not contact the same position on the marking paper tube, thereby avoiding the detection rod from marking the same position on the marking paper tube.

[0021] 2. The flatness detection device, by arranging a drum driving sliding hole and a drum driving rack on the drum driving plate, enables the drum driving plate to be lifted and lowered along with the support seat, and at the same time, when the support seat is translated, the drum driving gear rolls on the drum driving rack, thereby driving the detection drum to rotate, and by arranging a paper drum rotation driving sliding hole and a paper drum rotation driving rack on the paper drum driving plate, enables the marking paper drum to be lifted and lowered along with the support seat, and at the same time, when the support seat is translated, the paper drum driving gear rolls on the paper drum driving rack, thereby driving the marking paper drum to rotate, and in addition, by arranging a paper drum transverse driving sliding hole on the paper drum driving plate and rotatably installing a sliding block on the rotating shaft, when the support seat is translated, the marking paper drum can move to one side while rotating.

[0022] 3. The flatness detection device is provided with an optical signal transmitter, an optical signal receiver and a through hole. When the lowest 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

[0023] Figure 1 This is one of the three-dimensional structural schematic diagrams of the flatness detection device of the present invention; Figure 2 The second schematic diagram of the three-dimensional structure of the flatness detection device of the present invention; Figure 3 The third schematic diagram of the three-dimensional structure of the flatness detection device of the present invention; Figure 4 The fourth schematic diagram of the three-dimensional structure of the flatness detection device of the present invention; Figure 5 The fifth schematic diagram of the three-dimensional structure of the flatness detection device of the present invention; Figure 6 The sixth schematic diagram of the three-dimensional structure of the flatness detection device of the present invention; Figure 7 The seventh is a schematic diagram of the three-dimensional structure of the flatness detection device of the present invention; Figure 8 For the present invention Figure 7 A schematic diagram of the enlarged local structure at point A in the middle; Fig. 9 For the present invention Figure 7 A magnified schematic diagram of the local structure at B in the middle; Fig.10 For the present invention Figure 7 Enlarged schematic diagram of the local structure at point C in the middle.

[0024] In the figure: 1. Testing table; 2. Support frame; 3. Detection mechanism; 31. Support seat; 32. Detection rotating cylinder; 321. Mounting cylinder; 322. Cylinder cover; 323. Metal buckle; 33. Marking paper cylinder; 331. Circular slot; 332. Polygonal slot; 333. Sticker slot; 34. Detection rod; 341. Fixing ring; 342. Sliding rod; 343. Round head; 344. Line drawing pen; 345. Sliding groove; 346. Spring groove; 347. Telescopic spring; 348. Connecting ring; 34 9. Reset spring; 35. Fixed shaft; 36. Rotating shaft; 37. Paper tube disassembly and assembly mechanism; 371. Round block; 372. Cylinder; 373. Support spring; 374. Polygonal block; 375. Insert block; 376. Limit spring; 377. Round groove; 378. Slot; 379. Straight notch; 3710. Conical notch; 38. Mounting hole; 39. Laser transmitter mounting plate; 310. Laser receiver mounting plate; 311. Through hole; 4. Drum rotating mechanism; 41. Drum driving gear; 42. Drum driving plate; 421. Drum driving slide hole; 422. Drum driving rack; 5. Paper tube rotating mechanism; 51. Paper tube driving gear; 511. Fixed slider; 52. Paper tube driving plate; 521. Paper tube rotating driving sliding hole; 522. Paper tube lateral driving sliding hole; 523. Paper tube rotating driving rack; 524. Sliding block; 525. Connecting rod; 6. Linear lifting equipment; 7. Guide rod. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] Embodiment 1

[0027] See also Figure 1 - Figure 5The present invention provides a flatness detection device, including a detection platform 1, a support frame 2 is horizontally slidably installed above the detection platform 1, the support frame 2 is horizontally slidably installed on the upper surface of the detection platform 1 along a straight line, a linear lifting device 6 is fixedly installed on the support frame 2, and a detection mechanism 3 is fixedly connected to the driving end of the linear lifting device 6. The detection mechanism 3 includes a support seat 31, a detection drum 32, a marking paper drum 33 and a detection rod 34. The support seat 31 is fixedly installed on the driving end of the linear lifting device 6, the detection drum 32 is rotatably connected to the support seat 31, the marking paper drum 33 is detachably installed inside the detection drum 32, and the marking paper drum 33 is rotatably connected to the detection drum 32, and the detection rod 34 is slidably plugged into the detection drum 32; The detection platform 1 is provided with a drum rotating mechanism 4 and a paper drum rotating mechanism 5. The drum rotating mechanism 4 includes a drum driving gear 41 and a drum driving plate 42. The drum driving gear 41 is fixedly mounted on one end of the detection drum 32, and the drum driving plate 42 is mounted on the detection platform 1. The paper drum rotating mechanism 5 includes a paper drum driving gear 51 and a paper drum driving plate 52. The paper drum driving gear 51 is slidably mounted on one end of the marking paper drum 33, and the paper drum driving plate 52 is mounted on the detection platform 1. When the support frame 2 slides horizontally, the drum driving gear 41 and the paper drum driving gear 51 both roll in the moving direction of the support frame 2, causing the detection drum 32 and the marking paper drum 33 to rotate accordingly. At the same time, when the paper drum driving gear 51 moves, it drives the marking paper drum 33 to move in the length direction of the detection drum 32.

[0028] As can be seen from the above, the flatness detection device is provided with a support seat 31, a detection drum 32, a marking paper tube 33 and a detection rod 34. When the support seat 31 moves horizontally, the detection drum 32 rolls and drives the detection rod 34 to rotate, so that the detection rod 34 approaches the electrode membrane once at the same interval. When a bulge appears at the position where the electrode membrane surface contacts the detection rod 34, the detection rod 34 will be lifted up and contact the marking paper tube 33, thereby leaving a recording point on the marking paper tube 33, which can quickly record the number of bulge positions on the electrode membrane. In addition, since there is point contact between the detection rod 34 and the electrode membrane, the contact time is short, which can reduce damage to the electrode membrane. At the same time, since the marking paper tube 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 tube 33, thereby avoiding the detection rod 34 from marking the same position on the marking paper tube 33.

[0029] When using the device, the hydrogen fuel cell electrode membrane to be tested is placed and fixed on the test platform 1; the height of the detection mechanism 3 is adjusted by 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 platform 1 in the vertical state is the same as the thickness of the hydrogen fuel cell electrode membrane; the support frame 2 is controlled to move linearly 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 are successively close to 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 the hydrogen fuel cell electrode membrane and is lifted up, so that the detection rod 34 leaves a marking point on the marking paper tube 33.

[0030] Embodiment 2

[0031] like Figure 4 , Figure 5 , Figure 7 , Figure 8 and Fig. 9 As 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 line drawing pen 344, the side of the detection drum 32 is evenly provided with mounting holes 38, the fixing ring 341 is fixedly installed inside the mounting 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 to the outside of the detection drum 32, the line drawing pen 344 is plugged and installed at the other end of the sliding rod 342, and the detection rod 34 also includes a sliding groove 345, a spring groove 346, an extension groove 347, a spring groove 348, a spring groove 349, a spring groove 350, a spring groove 351, a spring groove 352, a spring groove 353, a spring groove 354, a spring groove 355, a spring groove 356, a spring groove 357, a spring groove 358, a spring groove 35 ...1, a spring groove 352, a spring groove 353, a spring groove 3 The expansion spring 347, the connecting ring 348 and the return spring 349, the slide groove 345 is arranged at the end of the slide bar 342 away from the round head 343, and the slide groove 345 is adapted to be plugged into the tail of the tracing pen 344, the spring groove 346 is arranged inside the slide groove 345, one end of the expansion spring 347 is fixedly connected to the bottom of the spring groove 346, and the other end of the expansion 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 slide bar 342, and the two ends of the return spring 349 are fixedly connected to the fixing ring 341 and the connecting ring 348 respectively.

[0032] As can be seen from the above, by providing the telescopic spring 347 and the return spring 349, when the round head 343 is not in contact with the electrode membrane, the return spring 349 can support the slide bar 342 to prevent the slide bar 342 from sliding randomly, and when the liner pen 344 is in contact with the marking paper tube 33, the tail end of the liner pen 344 can squeeze the telescopic spring 347 to prevent the liner pen 344 from scratching the recording paper fixed on the marking paper tube 33 due to the large protrusion of the electrode membrane.

[0033] The detection rotating cylinder 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 are hingedly mounted, and the other ends of the mounting cylinder 321 and the cylinder cover 322 are fixedly connected by the metal buckle 323. A fixed shaft 35 is fixedly mounted on one end of the mounting cylinder 321, and a rotating shaft 36 is rotatably mounted on the other end of the mounting cylinder 321. The other end of the fixed shaft 35 is rotatably connected to one end of the support seat 31, and the other end of the rotating shaft 36 is sleeved on the other end of the support seat 31. Both the mounting cylinder 321 and the cylinder cover 322 are provided with mounting holes 38.

[0034] 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 when rotating. By setting the fixed shaft 35 and the rotating shaft 36, the detection drum 32 can be supported to prevent the detection drum 32 from tilting. 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 by the fixed shaft 35.

[0035] The detection mechanism 3 also includes a paper tube disassembly and assembly mechanism 37, which includes a circular block 371, a cylinder 372, a support spring 373, a polygonal block 374, an insert block 375, and a limit spring 376. The circular block 371 is fixedly installed on the inner wall of one side of the installation cylinder 321, and a circular groove 377 is opened 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 the inner wall of one side 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 a slot 378, the insert block 375 is slidably inserted into the inside of the slot 378, and one end of the limit spring 376 is fixedly connected to the bottom of the slot 378 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 conical slot 3710. The upper end of the conical slot 3710 is connected to the lower end of the straight slot 379. The plug 375 passes through the conical slot 3710 and is slidably connected with the straight slot 379, and the side wall of the plug 375 is against the inner walls of the straight slot 379 on both sides. A circular slot 331 is provided at one end of the marking paper tube 33, and a polygonal slot 332 is provided at the other end of the marking paper tube 33. The circular slot 331 is adapted to be plugged with one end of the cylinder 372 away from the circular block 371, and the polygonal slot 332 is adapted to be plugged with one 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.

[0036] 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.

[0037] Embodiment 3

[0038] like Figure 3 , Figure 4 , Figure 6 and Fig.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.

[0039] 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 .

[0040] 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.

[0041] 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 .

[0042] A fixed slider 511 is slidably installed in the shaft hole of the paper roll driving gear 51, and the fixed slider 511 is fixedly installed on the rotating shaft 36. The rotating shaft 36 slides through the other end of the support seat 31 and is rotatably connected to the other end of the support seat 31. A paper roll transverse driving sliding hole 522 is also provided on the paper roll driving plate 52. A sliding block 524 is slidably installed inside the paper roll transverse driving sliding hole 522. A connecting rod 525 is fixedly installed at the lower end of the sliding block 524, and the connecting rod 525 is rotatably connected to the rotating shaft 36.

[0043] As can be seen from the above, since the fixed slider 511 is fixedly mounted on the rotating shaft 36 and is slidably connected to the paper tube driving gear 51, when the paper tube driving gear 51 drives the rotating shaft 36 to rotate, the rotating shaft 36 can also move linearly along its length direction. Since the paper tube driving plate 52 is provided with a paper tube transverse driving sliding hole 522, the paper tube transverse driving sliding hole 522 in this embodiment is a through hole with a parallelogram on the upper surface. When the sliding block 524 slides on the paper tube transverse driving sliding hole 522, the sliding block 524 can pull the rotating shaft 36 to move to one side, thereby driving the marking paper tube 33 to translate.

[0044] A guide rod 7 is also fixedly mounted on the detection platform 1 , and the rotating drum driving plate 42 and the paper roll driving plate 52 are slidably connected to the corresponding guide rod 7 , respectively.

[0045] As can be seen from the above, by setting the guide rod 7, the drum drive plate 42 and the paper tube drive plate 52 can only move up and down, but cannot move horizontally, so that when the support seat 31 moves horizontally, the gear can mesh with the corresponding tooth plate for transmission.

[0046] Embodiment 4

[0047] like Figure 2 As shown, the difference between this embodiment and the above embodiment is that the detection mechanism 3 also includes a laser transmitter mounting plate 39 and a laser receiver mounting plate 310, an optical signal transmitter is fixedly mounted at one end of the laser transmitter mounting plate 39 at an equal distance, an optical signal receiver is fixedly mounted at one end of the laser receiver mounting plate 310, both ends of the laser transmitter mounting plate 39 are respectively fixedly connected to one end of the lower surface of the drum driving plate 42 and the paper drum driving plate 52, both ends of the laser receiver mounting plate 310 are respectively fixedly connected to the other end of the lower surface of the drum driving plate 42 and the paper drum driving plate 52, and a through hole 311 is opened on the slide rod 342.

[0048] As can be seen from the above, by setting the laser transmitter mounting plate 39, the laser receiver mounting plate 310 and the through hole 311, (since the optical signal transmitter 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 lowest detection rod 34 is in a vertical state, only when the height of the contact position between the electrode membrane and the detection rod 34 is equal to the distance between the detection rod 34 and the upper surface of the detection platform 1, can the optical signal pass through the through hole 311 and be received by the optical signal receiver, thereby directly obtaining information on whether the electrode membrane is flat at this position.

[0049] Embodiment 5

[0050] See also Figure 1 - Fig.10 The present invention also discloses a method for detecting the production of a hydrogen fuel cell electrode membrane, the specific steps of which are: Place and fix the hydrogen fuel cell electrode membrane to be tested on the test bench 1; The height of the detection mechanism 3 is adjusted by 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 platform 1 in the vertical state is the same as the thickness of the hydrogen fuel cell electrode membrane; Control the support frame 2 to move linearly 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 are successively close to 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 the hydrogen fuel cell electrode membrane and is lifted up, so that the detection rod 34 leaves a marking point on the marking paper tube 33 .

[0051] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that 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.

2. A flatness detection device according to claim 1, characterized in that: 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.

3. A flatness detection device according to claim 2, 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.

4. A flatness detection device according to claim 3, 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.

5. A flatness detection device according to claim 4, 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.

6. 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.

7. 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.

8. 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.

9. A flatness detection device according to claim 2, 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.

10. A method for detecting the production of a hydrogen fuel cell electrode membrane, using a flatness detection device as described in claims 1-9, 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.

Images