Automatic stamping system for bipolar plate of fuel cell

Abstract

The fuel cell bipolar plate punching automation system comprises a blanking punching machine, a blanking die is arranged on the blanking punching machine, a positioning hole punch, a hydrogen inlet punch and an oxygen inlet punch are arranged on the blanking die, the blanking punching machine is matched with the blanking die to divide a polar plate blank, the positioning hole punch can punch a positioning hole in the polar plate blank, and the oxygen inlet punch can punch the positioning hole in the polar plate blank. The hydrogen inlet punch can be used for punching a hydrogen inlet in the polar plate blank, and the oxygen inlet punch can be used for punching an oxygen inlet in the polar plate blank; each forming punch press is provided with a forming die, and the forming punch presses are matched with the forming dies so that the polar plate blanks can be punched into formed polar plates; and the blanking punch press is provided with a blanking die, and the blanking punch press is matched with the blanking die to finish blanking of the outer ring and the manifold opening on the formed polar plate. Therefore, the automatic stamping system for the bipolar plate of the fuel cell has the advantage of being convenient for keeping continuous production.

Description

Technical Field

[0001] The invention relates to the technical field of fuel cell polar plates, and in particular to an automated stamping system for fuel cell bipolar plates. Background Art

[0002] Fuel cells are an emerging power generation technology following the original power generation technology. They are also a pollution-free, high-efficiency, noise-free and continuously working power device. The principle of fuel cells is to convert chemical energy into electrical energy, and the final product is water. It is recognized as the most environmentally friendly technology and is called the ultimate clean fuel. Hydrogen-oxygen fuel cells use oxygen as an oxidant and hydrogen as a fuel, and then convert the generated chemical energy into electrical energy through various chemical reactions of the fuel. This type of battery has many advantages such as large capacity, high specific energy, high conversion efficiency and wide power range. As one of the important components in fuel cells, bipolar plates play a decisive role in the life and performance of the battery. In related technologies, the production efficiency of bipolar plates is low, the production continuity is poor, and the punching die is easily damaged. Summary of the invention

[0003] The present invention aims to solve one of the technical problems in the related art at least to a certain extent. To this end, an embodiment of the present invention provides an automated system for stamping bipolar plates for fuel cells.

[0004] The fuel cell bipolar plate stamping automation system according to the embodiment of the present invention comprises:

[0005] A blanking punch, wherein a blanking die is provided on the blanking punch, and a positioning hole punch, a hydrogen inlet punch and an oxygen inlet punch are provided on the blanking die. The blanking punch cooperates with the blanking die to separate the electrode blank, the positioning hole punch can punch out a positioning hole on the electrode blank, the hydrogen inlet punch can punch out a hydrogen inlet on the electrode blank, and the oxygen inlet punch can punch out an oxygen inlet on the electrode blank;

[0006] At least one forming punch, each of which is provided with a forming die, and the forming punch cooperates with the forming die to punch the polar plate blank into a formed polar plate;

[0007] At least one blanking punch is provided on the blanking punch, and the blanking punch cooperates with the blanking die to complete the blanking of the outer ring and the manifold port on the formed plate.

[0008] Therefore, the fuel cell bipolar plate stamping automation system according to the present invention has the advantage of being able to maintain continuous production.

[0009] In some embodiments, the blanking punch includes a first blanking punch and a second blanking punch, and the blanking die includes a first blanking die and a second blanking die;

[0010] The first punch press cooperates with the first punch die to complete the punching of a part of the manifold opening on the formed plate, the outer rings at the four corners, and a part of the outer ring between two adjacent positioning holes on the same side;

[0011] The second blanking punch cooperates with the second blanking die to complete the blanking of the remaining manifold ports and the remaining outer rings on the formed plate.

[0012] In some embodiments, the hydrogen inlet punch comprises a plurality of hydrogen inlet sub-punches arranged at intervals, and the hydrogen inlet comprises a plurality of hydrogen sub-inlets arranged at intervals, and the plurality of hydrogen inlet sub-punches can punch out a plurality of hydrogen sub-inlets on the electrode blank;

[0013] The oxygen inlet punch comprises a plurality of oxygen inlet sub-punches arranged at intervals, and the oxygen inlet comprises a plurality of oxygen sub-inlet punches arranged at intervals, and the plurality of oxygen inlet sub-punches can punch out a plurality of oxygen sub-inlet punches on the electrode blank;

[0014] The positioning hole punch can punch out a plurality of positioning holes on the outer rings on both sides of the polar plate blank in the width direction.

[0015] In some embodiments, the fuel cell bipolar plate stamping automation system includes

[0016] An uncoiling and leveling feeding device, the uncoiling and leveling feeding device comprising an uncoiling machine and a leveling machine, the uncoiling machine is used to unwind the sheet coil, the leveling machine is used to level the sheet, when the warping degree of the sheet is greater than or equal to a first preset value, the leveling spacing of the leveling rollers of the leveling machine is adjusted from a second preset distance to a third preset distance, the second preset distance being greater than the third preset distance;

[0017] A cleaning and drying device is used to clean and dry the leveled plate.

[0018] In some embodiments, the uncoiler includes a material rack for placing the sheet coil, and the material rack is provided with a gravity sensor for monitoring the sheet coil;

[0019] The first preset value is 3 mm;

[0020] The leveling machine is provided with a detection device, which is used to detect the thickness of the plate. The detection device includes a plurality of detectors spaced apart in the width direction of the plate.

[0021] In some embodiments, the fuel cell bipolar plate stamping automation system includes multiple stacking devices, each of which can stack the punched finished plates. When the stacking quantity of one of the multiple stacking devices reaches the designed value, another of the multiple stacking devices starts to stack the finished plates.

[0022] In some embodiments, the forming punch includes a pre-forming punch and a shaping punch, and the forming die includes a pre-forming die and a shaping die;

[0023] The preforming punch is provided with the preforming die, and the preforming punch cooperates with the preforming die to punch the pole plate blank into a preformed pole plate;

[0024] The shaping punch is provided with the shaping die, and the shaping punch cooperates with the shaping die to punch the preformed pole plate into the formed pole plate.

[0025] In some embodiments, the blanking punch, the preforming punch, the shaping punch, the first punching punch, the second punching punch, and the palletizer are sequentially arranged in a first direction;

[0026] A robot is provided between the blanking punch, the preforming punch, the shaping punch, the first punching punch and the second punching punch that are adjacent to each other in the first direction.

[0027] In some embodiments, the manipulator includes a placement platform, a first clamp and a second clamp, wherein the first clamp can transfer the plate to the placement platform, and the second clamp can transfer the plate out of the placement platform;

[0028] A laser printer is provided between the shaping punch and the first punching punch, and the laser printer can perform laser printing on the electrode plate on the placement platform of the manipulator between the shaping punch and the first punching punch.

[0029] In some embodiments, the fuel cell bipolar plate stamping automation system includes a waste box and a waste transport device, and the waste transport device can transport waste from the blanking punch press, the first punch press, and the second punch press to the waste box. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 Schematic diagram of a fuel cell bipolar plate stamping automation system according to an embodiment of the present invention.

[0031] Figure 2 is a schematic diagram of a manipulator according to an embodiment of the present invention.

[0032] Figure 3Schematic diagram of a plate blank according to an embodiment of the present invention.

[0033] Figure 4 is a schematic diagram of a preformed plate according to an embodiment of the present invention.

[0034] Figure 5 Schematic diagram of a formed plate according to an embodiment of the present invention.

[0035] Figure 6 Schematic diagram of the first punching of a formed plate according to an embodiment of the present invention.

[0036] Figure 7 Schematic diagram of the second punching of the formed plate according to an embodiment of the present invention.

[0037] Figure 8 is a schematic diagram of a finished plate according to an embodiment of the present invention.

[0038] Fig. 9 Schematic diagram of a fuel cell bipolar plate stamping automation system according to an embodiment of the present invention.

[0039] Figure numerals: 1. Uncoiler, 2. Leveler, 3. Cleaning and drying device, 4. Unloading punch, 5. Preforming punch, 6. Shaping punch, 7. First punching punch, 8. Second punching punch, 9. Palletizing device, 10. Robot, 11. Placing platform, 12. First clamp, 13. Second clamp, 14. Laser printer, 15. Waste box, 16. Waste transport device, 17. Plate, 18. Positioning hole, 19. Hydrogen inlet, 191. Hydrogen sub-inlet, 20. Oxygen inlet, 201. Oxygen sub-inlet. DETAILED DESCRIPTION

[0040] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0041] The following describes the fuel cell bipolar plate stamping automation system according to an embodiment of the present invention with reference to the accompanying drawings. Figures 1 to 9 As shown, the fuel cell bipolar plate stamping automation system according to an embodiment of the present invention includes an unwinding, flattening and feeding device, a cleaning and drying device 3, a blanking punch 4, at least one forming punch, at least one blanking punch and multiple stacking devices 9.

[0042] like Figure 1As shown, the unwinding and leveling feeding device includes an unwinding machine 1 and a leveling machine 2. The unwinding machine 1 is used to unwind the sheet coil, and the unwinding machine 1 includes a material rack for placing the sheet coil, and a gravity sensor for monitoring the sheet coil is provided on the material rack. Specifically, the gravity sensor can monitor the weight of the sheet coil (titanium coil) in real time, and when the weight reaches the warning value, a signal is transmitted to the production management unit, and the production management unit notifies the transport vehicle (automatic guided vehicle) to transport the titanium coil to the material rack.

[0043] like Figure 1 As shown, the leveling machine 2 is used to level the plate. When the warping degree of the plate is greater than or equal to the first preset value, the leveling spacing of the leveling rollers of the leveling machine 2 is adjusted from the second preset distance to the third preset distance, and the second preset distance is greater than the third preset distance. Specifically, the leveling machine 2 can measure the warping degree of the plate and provide real-time feedback to the leveling machine 2 to adjust and control the pressing amount. When the warping degree of the plate is large, the leveling spacing (the spacing in the vertical direction) of the leveling rollers is reduced to better level the plate. For example, the first preset value is 3 mm. When the warping degree of the plate is greater than or equal to 3 mm, the leveling spacing in the vertical direction between the upper leveling roller and the lower leveling roller of the leveling machine 2 is adjusted from the second preset distance to the third preset distance.

[0044] In some embodiments, the leveling machine 2 is provided with a detection device, which is used to detect the thickness of the plate, and the detection device includes a plurality of detectors arranged at intervals in the width direction of the plate. Specifically, the plurality of detectors of the detection device can detect the thickness of the plate after leveling, and when the detector detects that the thickness of the plate is unqualified (too thick or too thin), the plate can be replaced. For example, the detector is an ultrasonic thickness sensor or a laser displacement sensor.

[0045] like Figure 1 As shown, the cleaning and drying device 3 is used to clean and dry the flattened plate. The cleaning and drying device 3 is used to remove oil, dust, impurities, etc. on the surface of the plate, and ensure that the plate is dry through drying treatment so as to carry out subsequent processing steps.

[0046] The blanking punch 4 is provided with a blanking die, and the blanking die is provided with a positioning hole punch, a hydrogen inlet punch and an oxygen inlet punch.

[0047] The unwinding and leveling feeding device can convey the cleaned plate to the blanking die. The feeding machine can set the feeding length according to the size of the product. The blanking die has an in-place detection device to prevent the plate from being fed out of place or the material from arching during the feeding process. After it is in place, the blanking punch 4 cooperates with the blanking die to cut out the plate blank.

[0048] like Figure 3As shown, the positioning hole punch can punch out positioning holes 18 on the plate blank. Specifically, the positioning hole 18 punch can punch out multiple positioning holes 18 on the outer rings on both sides of the plate blank in the width direction. The forming punch and the punching punch are provided with positioning pins that cooperate with the positioning holes 18 and stoppers that cooperate with the plate 17, so as to facilitate positioning for subsequent processing of the plate 17. For example, there are two positioning holes 18 on both sides of the plate blank in the width direction.

[0049] The hydrogen inlet punch can punch out a hydrogen inlet 19 on the plate blank. Specifically, the hydrogen inlet 19 punch includes a plurality of hydrogen inlet sub-punches arranged at intervals, and the hydrogen inlet 19 includes a plurality of hydrogen sub-inlets 191 arranged at intervals, and the plurality of hydrogen inlet sub-punches can punch out a plurality of hydrogen sub-inlets 191 on the plate blank.

[0050] The punch for the oxygen inlet 20 can punch out the oxygen inlet 20 on the plate blank. Specifically, the oxygen inlet punch includes a plurality of oxygen inlet sub-punches arranged at intervals, and the oxygen inlet 20 includes a plurality of oxygen inlet 201 arranged at intervals, and the plurality of oxygen inlet sub-punches can punch out a plurality of oxygen inlet 201 on the plate blank. Punching out the hydrogen inlet 19 and the oxygen inlet 20 in the blanking stage can reduce the difficulty of processing after forming, and can protect the blanking die, thereby ensuring the continuity of production.

[0051] Each forming punch is provided with a forming die, and the forming punch cooperates with the forming die to punch the pole plate blank into a formed pole plate 17 .

[0052] like Figure 1 As shown, in some embodiments, the forming punch includes a pre-forming punch 5 and a shaping punch 6, and the forming die includes a pre-forming die and a shaping die.

[0053] The preforming punch 5 is provided with a preforming die, and the preforming punch 5 cooperates with the preforming die to punch the plate blank into the preformed plate 17. The shaping punch 6 is provided with a shaping die, and the shaping punch 6 cooperates with the shaping die to punch the preformed plate 17 into the formed plate 17. Specifically, as Figure 4 As shown, the plate blanks coming out of the blanking die first enter the preforming die on the preforming punch 5 so as to be processed into preformed plate 17. Figure 5 As shown, the preformed pole plate 17 enters the shaping die on the shaping punch 6 to complete the shaping of the pole plate flow field, thereby completing the forming of the pole plate 17.

[0054] The punching press is provided with a punching die, and the punching press cooperates with the punching die to complete the punching of the outer ring and the manifold port on the formed pole plate 17 .

[0055] like Figure 1As shown, in some embodiments, the blanking punch includes a first blanking punch 7 and a second blanking punch 8, and the blanking die includes a first blanking die and a second blanking die.

[0056] The first punching press 7 cooperates with the first punching die to complete the punching of a portion of the manifold opening on the formed plate 17, the outer rings at the four corners, and a portion of the outer ring between two adjacent positioning holes 18 on the same side. Figure 6 As shown, after the formed plate 17 is taken out from the shaping die of the shaping punch 6, it enters the first punching die of the first punching punch 7. At this moment, the positioning pin of the first punching die is engaged in the positioning hole 18, and the first punching die punches the four manifold ports, four corner edge rings and a part of the edge rings on both sides in the width direction of the formed plate 17, so as to complete the first punching task.

[0057] The second punching press 8 cooperates with the second punching die to complete the punching of the remaining manifold openings and the remaining outer rings on the formed plate 17. Specifically, after the plate 17 is punched by the first punching die, it is placed in the second punching die. Figure 7 As shown, the limiting piece in the second punching die limits the pole plate 17, and the second punching die punches the remaining edge ring (the edge ring that limits the positioning hole 18 and the edge rings on both sides of the length direction of the pole plate 17) and the remaining manifold opening to manufacture the finished pole plate 17.

[0058] like Figure 1 As shown, each stacking device 9 can stack the punched finished plates 17. When the stacking quantity of one of the multiple stacking devices 9 reaches the designed value, another of the multiple stacking devices 9 starts to stack the finished plates 17. Specifically, there are two stacking devices 9. When the stacking quantity of one stacking device 9 reaches the designed value, the other stacks the newly produced finished plates 17. When production starts, the stacking device 9 places the product on the tray of the corresponding station, with a lifting mechanism underneath, placing one piece at a time. When the stacking quantity reaches the designed value, the station is used as a transfer station. Then the product is placed on the tray of another station to achieve continuous production without stopping.

[0059] like Figure 1 and Fig. 9 As shown, in some embodiments, the blanking punch 4, the preforming punch 5, the shaping punch 6, the first punching punch 7, the second punching punch 8 and the palletizer are arranged in sequence in the first direction. For example, the blanking punch 4, the preforming punch 5, the shaping punch 6, the first punching punch 7, the second punching punch 8 and the palletizer are arranged in sequence in the left and right directions, and the worktable heights are consistent.

[0060] A manipulator 10 is provided between the blanking punch 4, the preforming punch 5, the shaping punch 6, the first punching punch 7 and the second punching punch 8 adjacent to each other in the first direction. Thus, the pole plate 17 can be transferred by the manipulator 10, thereby achieving full automation to improve production efficiency.

[0061] like Figure 1 and Figure 2 As shown, in some embodiments, the manipulator 10 includes a placement platform 11, a first clamp 12 and a second clamp 13. The first clamp 12 can transfer the plate 17 (plate blank, preformed plate, formed plate, plate after punching) to the placement platform 11, and the second clamp 13 can transfer the plate 17 (plate blank, preformed plate, formed plate, plate after punching) on ​​the placement platform 11. The two clamps (the first clamp 12 and the second clamp 13) work simultaneously, which can further improve the work efficiency.

[0062] like Figure 1 As shown, in some embodiments, a laser printer 14 is provided between the shaping punch 6 and the first punching punch 7, and the laser printer 14 can perform laser printing on the electrode plate 17 on the placement platform 11 of the manipulator 10 between the shaping punch 6 and the first punching punch 7. Thus, when the formed electrode plate 17 is transferred to the placement platform 11 of the manipulator 10 between the shaping punch 6 and the first punching punch 7, the laser printer 14 can perform laser printing on the formed electrode plate 17 for numbering.

[0063] like Figure 1 In some embodiments shown, the fuel cell bipolar plate stamping automation system includes a waste box 15 and a waste transport device 16, and the waste transport device 16 can transport the waste from the blanking punch 4, the first punching punch 7, and the second punching punch 8 to the waste box 15. Specifically, the waste transport device 16 includes a conveyor belt, and the waste generated by the blanking punch 4, the first punching punch 7, and the second punching punch 8 can be transported to the waste box 15 through the conveyor belt. Each step of the punching process is equipped with a waste transport device 16, and the waste box 15 can be deeply monitored online using sensors.

[0064] According to the fuel cell bipolar plate stamping automation system of the present invention, all devices are managed by the production management system device, which can realize automatic loading of coils, automatic collection of waste materials, and automatic stacking of finished products. The production cycle can reach 20 times / min to 25 times / min, greatly improving the degree of automation.

[0065] According to the fuel cell bipolar plate stamping automation system of the present invention, during the blanking stage in the blanking die, the blanking die is used to punch out the hydrogen inlet 19 (hydrogen sub-inlet 191) and the oxygen inlet 20 (oxygen sub-inlet 201) on the plate blank, which can effectively avoid punching after forming and avoid serious wear caused by insufficient strength of the die structure of the punch press die, thereby increasing the life of the punching die, reducing the maintenance frequency of the punching die, and maintaining the stability of continuous production.

[0066] The fuel cell bipolar plate stamping automation system of the present invention cuts the waste material of the outer ring of the plate 17 in steps, so that it is avoided that the robot 10 needs to take out the waste material and the product and sort them at the same time during the overall punching, which affects the production efficiency. The step-by-step punching can improve the rigidity of the punching die and avoid deformation of the die.

[0067] Therefore, the fuel cell bipolar plate stamping automation system according to the present invention has the advantage of being able to maintain continuous production.

[0068] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0069] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0070] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0071] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0072] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0073] Although the above embodiments have been shown and described, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments by those of ordinary skill in the art are all within the scope of protection of the present invention.

Claims

1. A fuel cell bipolar plate stamping automation system, characterized in that: include: A blanking punch, wherein a blanking die is provided on the blanking punch, and a positioning hole punch, a hydrogen inlet punch and an oxygen inlet punch are provided on the blanking die. The blanking punch cooperates with the blanking die to separate the electrode blank, the positioning hole punch can punch out a positioning hole on the electrode blank, the hydrogen inlet punch can punch out a hydrogen inlet on the electrode blank, and the oxygen inlet punch can punch out an oxygen inlet on the electrode blank; At least one forming punch, each of which is provided with a forming die, and the forming punch cooperates with the forming die to punch the polar plate blank into a formed polar plate; At least one blanking punch is provided on the blanking punch, and the blanking punch cooperates with the blanking die to complete the blanking of the outer ring and the manifold port on the formed plate.

2. The fuel cell bipolar plate stamping automation system according to claim 1, characterized in that: The blanking punch comprises a first blanking punch and a second blanking punch, and the blanking die comprises a first blanking die and a second blanking die; The first punch press cooperates with the first punch die to complete the punching of a part of the manifold opening on the formed plate, the outer rings at the four corners, and a part of the outer ring between two adjacent positioning holes on the same side; The second blanking punch cooperates with the second blanking die to complete the blanking of the remaining manifold ports and the remaining outer rings on the formed plate.

3. The fuel cell bipolar plate stamping automation system according to claim 2, characterized in that: The hydrogen inlet punch comprises a plurality of hydrogen inlet sub-punches arranged at intervals, and the hydrogen inlet comprises a plurality of hydrogen sub-inlets arranged at intervals, and the plurality of hydrogen inlet sub-punches can punch out a plurality of hydrogen sub-inlets on the electrode blank; The oxygen inlet punch comprises a plurality of oxygen inlet sub-punches arranged at intervals, and the oxygen inlet comprises a plurality of oxygen sub-inlet punches arranged at intervals, and the plurality of oxygen inlet sub-punches can punch out a plurality of oxygen sub-inlet punches on the electrode blank; The positioning hole punch can punch out a plurality of positioning holes on the outer rings on both sides of the polar plate blank in the width direction.

4. The fuel cell bipolar plate stamping automation system according to claim 3, characterized in that: The fuel cell bipolar plate stamping automation system includes An uncoiling and leveling feeding device, the uncoiling and leveling feeding device comprising an uncoiling machine and a leveling machine, the uncoiling machine is used to unwind the sheet coil, the leveling machine is used to level the sheet, when the warping degree of the sheet is greater than or equal to a first preset value, the leveling spacing of the leveling rollers of the leveling machine is adjusted from a second preset distance to a third preset distance, the second preset distance being greater than the third preset distance; A cleaning and drying device is used to clean and dry the leveled plate.

5. The fuel cell bipolar plate stamping automation system according to claim 4, characterized in that: The uncoiler comprises a material rack for placing the sheet coil, and the material rack is provided with a gravity sensor for monitoring the sheet coil; The first preset value is 3 mm; The leveling machine is provided with a detection device for detecting the thickness of the plate. The detection device comprises a plurality of detectors spaced apart in the width direction of the plate.

6. The fuel cell bipolar plate stamping automation system according to claim 4, characterized in that: The fuel cell bipolar plate stamping automation system includes multiple stacking devices, each of which can stack the finished polar plates after punching. When the stacking quantity of one of the multiple stacking devices reaches the designed value, another of the multiple stacking devices starts to stack the finished polar plates.

7. The fuel cell bipolar plate stamping automation system according to claim 6, characterized in that: The forming punch comprises a preforming punch and a shaping punch, and the forming die comprises a preforming die and a shaping die; The preforming punch is provided with the preforming die, and the preforming punch cooperates with the preforming die to punch the pole plate blank into a preformed pole plate; The shaping punch is provided with the shaping die, and the shaping punch cooperates with the shaping die to punch the preformed pole plate into the formed pole plate.

8. The fuel cell bipolar plate stamping automation system according to claim 7, characterized in that: The blanking punch, the preforming punch, the shaping punch, the first punching punch, the second punching punch and the palletizer are arranged in sequence in the first direction; A robot is provided between the blanking punch, the preforming punch, the shaping punch, the first punching punch and the second punching punch that are adjacent to each other in the first direction.

9. The fuel cell bipolar plate stamping automation system according to claim 8, characterized in that: The manipulator comprises a placement platform, a first clamp and a second clamp, wherein the first clamp can transfer the plate to the placement platform, and the second clamp can transfer the plate out of the placement platform; A laser printer is provided between the shaping punch and the first punching punch, and the laser printer can perform laser printing on the electrode plate on the placement platform of the manipulator between the shaping punch and the first punching punch.

10. The fuel cell bipolar plate stamping automation system according to claim 8, characterized in that: The fuel cell bipolar plate stamping automation system comprises a waste box and a waste transport device, wherein the waste transport device can transport the waste from the blanking punch press, the first punch press and the second punch press into the waste box.

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