Quick positioning tool for bipolar plate flow channel detection

Abstract

The utility model discloses a quick positioning tool for bipolar plate runner detection relates to bipolar plate runner detection technical field, including bottom plate and moving assembly, bottom plate: the front end fixed position block in the middle part of upside, moving assembly: contain moving block, two -way screw rod, mounting bracket and motor, the front side of bottom plate is opened with the strip groove, the inside slip connection of strip groove has two corresponding moving blocks, the middle part of moving block is opened with the screw hole, and two screw holes are opposite thread, and the inside screw thread connection of two screw holes has two -way screw rod, two -way screw rod rotation connection is in the inside of strip groove, the right side fixed mounting bracket of bottom plate, the inside installation of mounting bracket has motor, the output shaft of motor is fixed in the right -hand end of two -way screw rod, can realize the quick, self -adaptation clamping positioning of bipolar plate, effectively avoid the plate material damage or measurement error because of the improper clamping force.

Description

Technical Field

[0001] This utility model relates to the field of bipolar plate flow channel detection technology, specifically to a rapid positioning fixture for bipolar plate flow channel detection. Background Technology

[0002] As a highly efficient and clean energy conversion device, the quality of the bipolar plate, a core component of a fuel cell, directly determines the overall performance and lifespan of the fuel cell stack. The bipolar plate channels are a network of microchannels precisely machined onto the plate surface, undertaking multiple critical tasks such as transporting reactant gases (such as hydrogen and oxygen), draining generated water, and conducting current and heat. The geometry, dimensional accuracy, and surface integrity of these channels are crucial. Any minute imperfections, such as uneven width or depth, insufficient sidewall steepness, or even micron-sized cracks and burrs, can lead to uneven distribution of reactant gases, poor drainage, or localized hot spots, thereby severely reducing the cell's output efficiency and operational stability. Therefore, ensuring the machining quality of the bipolar plate channels and conducting comprehensive and accurate testing is an indispensable part of the fuel cell manufacturing process.

[0003] However, existing technologies for detecting and locating bipolar plate flow channels face numerous challenges and shortcomings. Traditional fixtures often lack sufficient adaptability; for bipolar plates of different sizes and flow channel layouts, frequent changes of specialized clamping fixtures are required. This process is not only time-consuming and labor-intensive but also makes it difficult to ensure consistent positioning each time. During clamping, since bipolar plates are usually made of graphite composite materials or thin metal plates, they are brittle and easily deformed. If the clamping force is not properly controlled, excessive force can easily cause micro-cracks or permanent warping of the plate, while insufficient force cannot guarantee stability during the detection process, thus introducing measurement errors. Therefore, we propose a rapid positioning fixture for bipolar plate flow channel detection. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the existing defects and provide a rapid positioning fixture for bipolar plate flow channel detection, which can realize rapid and adaptive clamping and positioning of bipolar plates, effectively avoid plate damage or measurement errors caused by improper clamping force, and can effectively solve the problems in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a rapid positioning fixture for bipolar plate flow channel detection, comprising a base plate and a moving assembly; Base plate: A positioning block is fixed at the front end of the upper middle section; The moving assembly includes a moving block, a bidirectional screw, a mounting bracket, and a motor. A slotted groove is formed on the front side of the base plate, through which two corresponding moving blocks are slidably connected. Each moving block has a threaded hole in its center with opposite threads. A bidirectional screw is threaded into the two threaded holes and rotatably connected to the slot. A mounting bracket is fixed to the right side of the base plate, and a motor is installed inside the mounting bracket. The motor's output shaft is fixed to the right end of the bidirectional screw. The motor's input is electrically connected to the output of an external PLC controller. A clamping assembly is mounted on the side of the moving block, and a fixing assembly is mounted on the side of the clamping assembly. A fastening assembly is mounted on the top of the clamping assembly. The moving assembly drives the two clamping assemblies to move.

[0006] Furthermore, the clamping assembly includes an L-shaped connecting strip, a damping disc, a slide rod, a spring, clamping bars, and a first pressure sensor. An L-shaped connecting strip is fixed to the side of the moving block. A groove is formed on the right side of the L-shaped connecting strip, and a damping disc is slidably connected inside the groove. A slide rod is fixed to the end face of the damping disc, and a spring is fixed to the end of the damping disc away from the slide rod. The spring is fixed inside the groove. Clamping bars are fixed to the end faces of the two slide rods. Two corresponding first mounting slots are formed on the corresponding inner sides of the two clamping bars. A first pressure sensor is installed inside the first mounting slot. The first pressure sensor is bidirectionally electrically connected to an external PLC controller. By setting the clamping assembly, bipolar plate channels of different sizes can be clamped and positioned, while effectively avoiding damage to the bipolar plate channels.

[0007] Furthermore, the fixing assembly includes a first hydraulic rod, a support plate, and a second pressure sensor. The first hydraulic rod is mounted on the side of the L-shaped connecting strip, and the support plate is fixed on the telescopic arm of the first hydraulic rod. A second groove is formed on the side of the clamping strip away from the first pressure sensor, and a second pressure sensor is installed inside the second groove. The second pressure sensor is bidirectionally electrically connected to an external PLC controller, and the input end of the first hydraulic rod is electrically connected to the output end of the external PLC controller. The two clamping strips are fixed by setting the fixing assembly.

[0008] Furthermore, the fastening assembly includes a support frame, a second hydraulic rod, a fastening plate, and a third pressure sensor. The support frame is fixed to the upper side of the L-shaped connecting strip, and the second hydraulic rod is installed on the upper side of the support frame. A fastening plate is fixed to the telescopic arm of the second hydraulic rod. A third groove is formed on the lower side of the fastening plate, and a third pressure sensor is installed inside the third groove. The second pressure sensor is bidirectionally electrically connected to an external PLC controller, and the input end of the second hydraulic rod is electrically connected to the output end of the external PLC controller. By setting the fastening assembly, the bipolar plate flow channel is further fixed from top to bottom.

[0009] Furthermore, a rubber plate is fixed to the lower side of the fastening plate, and an opening is provided in the middle of the rubber plate. The lower end of the third pressure sensor is located inside the opening. By setting the rubber plate, damage to the bipolar plate flow channel by the fastening plate can be effectively avoided.

[0010] Furthermore, four corresponding mounting plates are fixed on the front and rear sides of the base plate, and mounting holes are provided in the middle of the mounting plates. The base plate is fixed by setting the mounting plates and mounting holes.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: This rapid positioning fixture for bipolar plate flow channel inspection has the following advantages: By setting up a moving assembly consisting of a bidirectional screw driven by a motor and a moving block, the position of the clamping assemblies on both sides can be adjusted quickly and synchronously, effectively adapting to bipolar plates of different sizes and specifications. The clamping assembly adopts a buffer structure combining springs and damping discs. With the real-time monitoring of the first pressure sensor, the clamping force can be automatically adjusted and fed back during the clamping process. This ensures the stable clamping of the bipolar plate during the testing process and avoids plate deformation or surface damage caused by excessive clamping force, significantly improving the adaptability of positioning and the safety of operation. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the front structure of this utility model; Figure 2 This is a schematic diagram of the clamping component structure of this utility model; Figure 3 This is a schematic diagram of the fastening component structure of this utility model.

[0013] In the diagram: 1. Base plate, 2. Positioning block, 3. Moving assembly, 31. Moving block, 32. Bidirectional screw, 33. Mounting bracket, 34. Motor, 4. Clamping assembly, 41. L-shaped connecting strip, 42. Damping disc, 43. Slide rod, 44. Spring, 45. Clamping strip, 46. First pressure sensor, 5. Fixing assembly, 51. First hydraulic rod, 52. Support plate, 53. Second pressure sensor, 6. Fastening assembly, 61. Support bracket, 62. Second hydraulic rod, 63. Fastening plate, 64. Third pressure sensor, 7. Rubber plate, 8. Mounting plate, 9. Mounting hole. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figure 1-3 This embodiment provides a technical solution: a rapid positioning fixture for bipolar plate flow channel detection, including a base plate 1 and a moving component 3; Base plate 1: A positioning block 2 is fixed to the front end of the upper middle part; Movable component 3 includes a movable block 31, a bidirectional screw 32, a mounting bracket 33, and a motor 34. A strip-shaped groove is formed on the front side of the base plate 1, through which two corresponding movable blocks 31 are slidably connected. A threaded hole is formed in the middle of each movable block 31, with opposite threads. The bidirectional screw 32 is threaded into the two threaded holes and rotatably connected to the inside of the strip-shaped groove. A mounting bracket 33 is fixed to the right side of the base plate 1, and a motor 34 is installed inside the mounting bracket 33. The output shaft of the motor 34 is fixed to the right end of the bidirectional screw 32, and the input end of the motor 34 is electrically connected to the output end of an external PLC controller. A clamping component 4 is mounted on the side of the movable block 31, and a fixing component 5 is mounted on the side of the clamping component 4. A fastening component 6 is mounted on the upper side of component 4. The clamping component 4 includes an L-shaped connecting bar 41, a damping disc 42, a sliding rod 43, a spring 44, a clamping bar 45, and a first pressure sensor 46. An L-shaped connecting bar 41 is fixed to the side of the moving block 31. A groove is formed on the right side of the L-shaped connecting bar 41, and the damping disc 42 is slidably connected inside the groove. A sliding rod 43 is fixed to the end face of the damping disc 42. A spring 44 is fixed to the end of the damping disc 42 away from the sliding rod 43, and the spring 44 is fixed inside the groove. Clamping bars 45 are fixed to the end faces of the two sliding rods 43. Two corresponding first mounting slots are formed on the corresponding inner sides of the two clamping bars 45. The first pressure sensor 46 is installed inside the first mounting slot. The device is bidirectionally electrically connected to an external PLC controller. The fixing assembly 5 includes a first hydraulic rod 51, a support plate 52, and a second pressure sensor 53. The first hydraulic rod 51 is mounted on the side of the L-shaped connecting bar 41, and the support plate 52 is fixed to the telescopic arm of the first hydraulic rod 51. A second groove is formed on the side of the clamping bar 45 away from the first pressure sensor 46, and the second pressure sensor 53 is installed inside the second groove. The second pressure sensor 53 is bidirectionally electrically connected to the external PLC controller. The input end of the first hydraulic rod 51 is electrically connected to the output end of the external PLC controller. The fastening assembly 6 includes a support frame 61, a second hydraulic rod 62, a fastening plate 63, and a third pressure sensor 64. The support frame 61 is fixed to the upper side of the L-shaped connecting bar 41. A second hydraulic rod 62 is installed on the upper side of the support frame 61. A fastening plate 63 is fixed on the telescopic arm of the second hydraulic rod 62. A third groove is provided on the lower side of the fastening plate 63. A third pressure sensor 64 is installed inside the third groove. The second pressure sensor 64 is bidirectionally electrically connected to an external PLC controller. The input end of the second hydraulic rod 62 is electrically connected to the output end of the external PLC controller. The bipolar plate flow channel is further fixed from top to bottom by setting the fastening component 6. The two clamping bars 45 are fixed by setting the fixing component 5. The bipolar plate flow channel of different sizes is clamped and positioned by setting the clamping component 4, which can effectively avoid damage to the bipolar plate flow channel. The two clamping components 4 are moved by setting the moving component 3.

[0016] Among them, a rubber plate 7 is fixed to the lower side of the fastening plate 63, and an opening is provided in the middle of the rubber plate 7. The lower end of the third pressure sensor 64 is located inside the opening. By setting the rubber plate 7, the fastening plate 63 can be effectively prevented from damaging the bipolar plate flow channel.

[0017] Among them: four corresponding mounting plates 8 are fixed on the front and rear sides of the base plate 1, and mounting holes 9 are opened in the middle of the mounting plates 8. The base plate 1 is fixed by setting the mounting plates 8 and the mounting holes 9.

[0018] The working principle of the rapid positioning fixture for bipolar plate flow channel detection provided by this utility model is as follows: First, the bipolar plate to be detected is placed on the base plate 1, and its front end is pressed against the positioning block 2 to achieve preliminary positioning; then, the motor 34 is started, and the motor 34 drives the bidirectional screw 32 to rotate. Since the threaded holes of the two moving blocks 31 have opposite thread directions, the two moving blocks 31 will move synchronously towards or away from each other along the strip groove, thereby driving the clamping components 4 on both sides to adjust to the appropriate position; in the clamping components 4, the clamping bar 45 is connected to the L-shaped connecting bar 41 through the slide bar 43 and the damping plate 42, and the spring 44 provides buffering force, so that the clamping bar 45 can adaptively adjust the clamping force when contacting the bipolar plate to avoid rigid impact; the first pressure sensor 46. ​​The clamping force is monitored in real time and the signal is fed back to the external PLC controller. When the pressure reaches the set range, the PLC controller controls the motor 34 to stop running to ensure stable clamping and no damage to the bipolar plates. Then, the fixing component 5 starts to work. The first hydraulic rod 51 pushes the support plate 52 to apply support force to the side of the clamping bar 45. The second pressure sensor 53 detects the magnitude of the support force and feeds it back to the PLC controller to keep the clamping bar 45 laterally stable. Finally, the fastening component 6 is activated. The second hydraulic rod 62 drives the fastening plate 63 to move downward and press the upper surface of the bipolar plate with the rubber plate 7. The third pressure sensor 64 monitors the clamping force and the PLC controller adjusts the stroke of the second hydraulic rod 62 to achieve auxiliary fixing from top to bottom.

[0019] It is worth noting that the external PLC controller disclosed in the above embodiments is specifically a Siemens S7-200. The first hydraulic rod 51, the second hydraulic rod 62, the third hydraulic rod 64, the motor 34, the first pressure sensor 46, the second pressure sensor 53, and the third pressure sensor 64 can be freely configured according to the actual application scenario. The external PLC controller controls the operation of the first hydraulic rod 51, the second hydraulic rod 62, the third hydraulic rod 64, and the motor 34 using methods commonly used in the prior art.

[0020] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A rapid positioning fixture for bipolar plate flow channel inspection, characterized in that: Includes a base plate (1) and a moving assembly (3); Base plate (1): A positioning block (2) is fixed at the front end of the upper middle part; The moving component (3) includes a moving block (31), a bidirectional screw (32), a mounting bracket (33), and a motor (34). A strip groove is provided on the front side of the base plate (1). Two corresponding moving blocks (31) are slidably connected inside the strip groove. A threaded hole is provided in the middle of the moving block (31). The threads of the two threaded holes are opposite. The bidirectional screw (32) is connected to the threaded hole inside the two threaded holes. The bidirectional screw (32) is rotatably connected inside the strip groove. A mounting bracket (33) is fixed on the right side of the base plate (1). A motor (34) is installed inside the mounting bracket (33). The output shaft of the motor (34) is fixed to the right end of the bidirectional screw (32). The input end of the motor (34) is electrically connected to the output end of an external PLC controller. A clamping component (4) is installed on the side of the moving block (31). A fixing component (5) is installed on the side of the clamping component (4). A fastening component (6) is installed on the upper side of the clamping component (4).

2. The rapid positioning fixture for bipolar plate flow channel inspection according to claim 1, characterized in that: The clamping assembly (4) includes an L-shaped connecting strip (41), a damping disc (42), a slide rod (43), a spring (44), a clamping strip (45), and a first pressure sensor (46). An L-shaped connecting strip (41) is fixed on the side of the moving block (31). A slide groove is provided on the right side of the L-shaped connecting strip (41). The damping disc (42) is slidably connected inside the slide groove. A slide rod (43) is fixed on the end face of the damping disc (42). A spring (44) is fixed on the end of the damping disc (42) away from the slide rod (43). The spring (44) is fixed inside the slide groove. A clamping strip (45) is fixed on the end face of the two slide rods (43). Two corresponding first mounting slots are provided on the corresponding inner sides of the two clamping strips (45). A first pressure sensor (46) is installed inside the first mounting slot. The first pressure sensor (46) is bidirectionally electrically connected to an external PLC controller.

3. The rapid positioning fixture for bipolar plate flow channel inspection according to claim 2, characterized in that: The fixing component (5) includes a first hydraulic rod (51), a support plate (52), and a second pressure sensor (53). The first hydraulic rod (51) is installed on the side of the L-shaped connecting strip (41). The support plate (52) is fixed on the telescopic arm of the first hydraulic rod (51). A second groove is provided on the side of the clamping strip (45) away from the first pressure sensor (46). The second pressure sensor (53) is installed inside the second groove. The second pressure sensor (53) is bidirectionally electrically connected to an external PLC controller. The input end of the first hydraulic rod (51) is electrically connected to the output end of the external PLC controller.

4. The rapid positioning fixture for bipolar plate flow channel inspection according to claim 3, characterized in that: The fastening assembly (6) includes a support frame (61), a second hydraulic rod (62), a fastening plate (63), and a third pressure sensor (64). The support frame (61) is fixed on the upper side of the L-shaped connecting strip (41). The second hydraulic rod (62) is installed on the upper side of the support frame (61). The fastening plate (63) is fixed on the telescopic arm of the second hydraulic rod (62). A third groove is provided on the lower side of the fastening plate (63). The third pressure sensor (64) is installed inside the third groove. The second pressure sensor (53) is bidirectionally electrically connected to an external PLC controller. The input end of the second hydraulic rod (62) is electrically connected to the output end of the external PLC controller.

5. The rapid positioning fixture for bipolar plate flow channel inspection according to claim 4, characterized in that: A rubber plate (7) is fixed to the lower side of the fastening plate (63), and an opening is provided in the middle of the rubber plate (7). The lower end of the third pressure sensor (64) is located inside the opening.

6. The rapid positioning fixture for bipolar plate flow channel inspection according to claim 1, characterized in that: The base plate (1) has four corresponding mounting plates (8) fixed on its front and rear sides, and the mounting plates (8) have mounting holes (9) in the middle.

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