Stack assembly line

Abstract

The utility model provides a kind of electric pile assembly line, including pre-installation branch line, material preparation mechanism, transfer mechanism and final assembly branch line, pre-installation branch line is adjacent with final assembly branch line, material preparation mechanism is set in one end of final assembly branch line, transfer mechanism is between final assembly branch line and material preparation mechanism, material preparation mechanism is used to reserve diaphragm, bipolar plate and gasket, pre-installation branch line is used to assemble liquid flow frame, baffle and blanket felt to constitute electrode, transfer mechanism is used to transport diaphragm, bipolar plate and gasket and electrode on adjacent pre-installation branch line to final assembly branch line to stack and form electric pile.In the utility model, the distance between transfer mechanism and material preparation mechanism, final assembly branch line and adjacent pre-installation branch line is considerable, bipolar plate, gasket and diaphragm on material preparation mechanism and electrode on pre-installation branch line can be well transferred to final assembly branch line to stack and form electric pile, space layout is reasonable, production space is small, which is conducive to reducing cost and improving production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of flow battery technology, and in particular to a battery stack assembly line. Background Technology

[0002] The fuel cell stack is the main structure of a flow battery, consisting of several individual cells connected in series. For example... Figure 21 As shown, a single cell 'a' in a certain fuel cell stack includes a bipolar plate a1, an electrode a2, a sealing gasket a3, and a separator a4. The stacking order of single cells 'a' is: bipolar plate a1, electrode a2, sealing gasket a3, separator a4, sealing gasket a3, electrode a2, bipolar plate a1. The bipolar plate a1 is shared by two adjacent single cells 'a' in the stack. In the production process, how to quickly and accurately stack these components is key to improving production efficiency and is also a problem that urgently needs to be solved. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a fuel cell stack assembly line that can effectively improve production efficiency.

[0004] The embodiments of this utility model are achieved through the following technical solutions:

[0005] An electrode stack assembly line includes a pre-assembly branch line, a material preparation mechanism, a transfer mechanism, and a final assembly branch line. The pre-assembly branch line is adjacent to the final assembly branch line. The material preparation mechanism is located at one end of the final assembly branch line. The transfer mechanism is located between the final assembly branch line and the material preparation mechanism. The material preparation mechanism is used to store diaphragms, bipolar plates, and sealing gaskets. The pre-assembly branch line is used to assemble fluid flow frames, diaphragms, and felt to form electrodes. The transfer mechanism is used to transfer the diaphragms, bipolar plates, sealing gaskets, and electrodes from adjacent pre-assembly branch lines to the final assembly branch line for stacking to form an electrode stack. The transfer mechanism is positioned at approximately equal distances from the material preparation mechanism, the final assembly branch line, and the adjacent pre-assembly branch line, allowing for efficient transfer of bipolar plates, sealing gaskets, and diaphragms from the material preparation mechanism, as well as electrodes from the pre-assembly branch lines, to the final assembly branch line for stacking to form an electrode stack. This spatial layout is efficient, occupies minimal production space, and helps reduce costs and improve production efficiency. Attached Figure Description

[0006] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0007] Figure 1 This is a schematic diagram of the structure of the fuel cell assembly line provided in an embodiment of the present invention;

[0008] Figure 2 A three-dimensional structural diagram of the feeding mechanism provided in an embodiment of this utility model;

[0009] Figure 3 A schematic diagram of the assembly structure of the lifting mechanism, the fixed support plate, and the movable support plate provided in the embodiments of this utility model;

[0010] Figure 4 A three-dimensional structural schematic diagram of the first lifting mechanism provided for an embodiment of this utility model;

[0011] Figure 5 A three-dimensional structural schematic diagram of the first assembly mechanism provided for an embodiment of this utility model;

[0012] Figure 6 A schematic diagram of the assembly structure of the first glue pressing plate, the shaping plate and the return line provided in an embodiment of this utility model;

[0013] Figure 7 This is a schematic diagram of the exploded structure of the electrode in an embodiment of this utility model;

[0014] Figure 8 A three-dimensional structural schematic diagram of the first grasping component provided in an embodiment of this utility model;

[0015] Figure 9 A three-dimensional structural diagram of the shaping plate provided in an embodiment of this utility model;

[0016] Figure 10 A three-dimensional structural diagram of the lifting mechanism provided in an embodiment of this utility model;

[0017] Figure 11 A three-dimensional structural schematic diagram of the first NG mechanism provided for an embodiment of this utility model;

[0018] Figure 12 A three-dimensional structural diagram of the flipping mechanism provided in an embodiment of this utility model;

[0019] Figure 13 for Figure 12 A partially enlarged schematic diagram of the structure at point A;

[0020] Figure 14 A three-dimensional structural schematic diagram of the first dispensing mechanism provided for an embodiment of this utility model;

[0021] Figure 15 A three-dimensional structural schematic diagram of the adhesive testing mechanism provided in this embodiment of the utility model;

[0022] Figure 16 A three-dimensional structural schematic diagram of the second assembly mechanism provided in this embodiment of the utility model;

[0023] Figure 17 A three-dimensional structural diagram of the third gripping component provided in an embodiment of this utility model;

[0024] Figure 18 A three-dimensional structural diagram of the maintenance mechanism provided in an embodiment of this utility model;

[0025] Figure 19 A three-dimensional structural schematic diagram of the maintenance component provided in an embodiment of this utility model;

[0026] Figure 20 A three-dimensional structural diagram of the feeding mechanism provided in an embodiment of this utility model;

[0027] Figure 21 This is a schematic diagram of the structure of a single battery in an embodiment of this utility model;

[0028] Figure 22 A schematic diagram of the assembly structure of the second conveyor line and stacking module provided for an embodiment of this utility model;

[0029] Figure 23 A schematic diagram of the assembly structure of the second conveying line and the unloading module provided for an embodiment of this utility model;

[0030] Figure 24 A three-dimensional structural diagram of the stacking fixture provided in an embodiment of this utility model.

[0031] Icons: 1. Pre-installed branch line; 1a. First NG mechanism; 1a1. Second frame; 1a2. Second gantry structure; 1a3. First vision component; 1a31. Assembly plate; 1a32. First linear module; 1a33. Adjustment plate; 1a34. Slide cylinder; 1a35. CCD camera bracket; 1a4. First recovery carrier; 1a41. Carrier plate; 1a5. Second gripping component; 1b. Second NG mechanism; 1c. Maintenance mechanism; 1c1. Seventh frame; 1c2. Sixth gantry structure; 1c3. Maintenance component; 1c31. Extension plate; 1c32. Maintenance base block; 1c33. Second wheel frame; 1c34. Second roller; 1c35. First wheel frame; 1c36. First roller; 1c37. Limiting device Stop block; 1c38, displacement sensor; 10, return line; 101, first conveyor line; 11, feeding mechanism; 111, feeding frame; 1111, feeding space; 1112, first return space; 1113, feeding gantry; 1114, feeding gripper; 112, first lifting mechanism; 1121, second main longitudinal frame plate; 1122, second auxiliary longitudinal frame plate; 1123, roller; 1124, first positioning pin; 113, first trolley; 1131, fixed support plate; 1132, moving support plate; 1133, side guard; 1134, clearance slot; 114, lifting mechanism; 1141, first main longitudinal frame plate; 1142, first auxiliary longitudinal frame plate; 1143, extension frame; 1144, top plate; 12, unloading mechanism; 121. Eighth frame; 122. Second lifting mechanism; 13. First assembly mechanism; 131. First frame; 132. First dispensing pressure plate; 1321. Clearance hole; 133. First dispensing assembly; 134. First gripping assembly; 1341. First hanger; 1342. First base plate; 13421. First drive cylinder; 1343. First support plate; 13431. Assembly block; 13432. Second guide post; 134321. Square shaft section; 13433. Buffer spring; 13434. Pressure holding block; 134341. Guide square hole; 1344. Connecting plate; 1345. First guide post; 1346. Gripping suction cup; 135. First gantry structure; 136. Shaping plate; 1360. Shaping plane ; 1361, Width limiting block; 1362, Length limiting block; 14, Flipping mechanism; 141, Third frame; 1411, Third base plate; 1412, Flipping mounting plate; 1413, Fourth guide post; 1414, Flipping seat; 1415, Flipping plate; 1416, Gripper head; 1417, Gripper cylinder; 15, First dispensing mechanism; 151, Fourth frame; 152, Second dispensing plate; 1521, Dispensing hole; 153, Third gantry structure; 154, Second dispensing assembly; 16, Glue detection mechanism; 161, Fifth frame; 162, Detection pressure plate; 163, Second vision assembly; 164, Fourth gantry structure; 17, Second assembly mechanism; 171, Sixth frame; 172, Fifth gantry structure;173. Third gripping assembly; 1731. Second hanger; 1732. Fourth base plate; 1733. Fifth guide post; 1734. Return spring; 1735. First gripping plate; 1736. Second gripping plate; 1736. Needle-type suction cup; 1737. Second drive cylinder; 1738. Sixth guide post; 174. Buffer area; 175. Assembly area; 18. Conveying fixture; 181. Positioning hole; 182. Clearance notch; 19. Lifting mechanism; 191. Second base plate; 192. Lifting plate; 1921. Second positioning pin; 2. Final assembly branch line; 21. Second conveyor line; 22, stacking fixture; 221, base plate; 222, support plate; 223, bearing block; 224, limiting post; 23, stacking module; 231, stacking frame; 232, lifting suspension; 24, unloading module; 241, unloading frame; 2411, rotating shaft; 242, flipping frame; 2421, first frame plate; 24211, fixture limiting head; 2422, second frame plate; 3, material preparation mechanism; 31, first material preparation mechanism; 32, second material preparation mechanism; 4, transfer mechanism; 5, fuel cell stack; a, single cell; a1, bipolar plate; a2, electrode;

[0032] a21, fluid flow frame; a211, molding groove; a212, assembly hole; a22, partition plate; a23, carbon felt; a3, sealing gasket; a4, diaphragm. Detailed Implementation

[0033] To better understand and implement this invention, the technical solutions in the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0035] Please refer to Figures 1 to 24An electric fuel cell stack assembly line includes a pre-assembly branch line 1, a material preparation mechanism 3, a transfer mechanism 4, and a final assembly branch line 2. The pre-assembly branch line 1 and the final assembly branch line 2 are arranged adjacent to each other. The material preparation mechanism 3 is located at one end of the final assembly branch line 2. The transfer mechanism 4 is located between the final assembly branch line 2 and the material preparation mechanism 3. The material preparation mechanism 3 is used to store a diaphragm a4, a bipolar plate a1, and a sealing gasket a3. The pre-assembly branch line 1 is used to assemble a fluid flow frame a21, a diaphragm a22, and a felt blanket to form an electrode a2. The transfer mechanism 4 is used to transfer the diaphragm a4, the bipolar plate a1, the sealing gasket a3, and the electrode a2 from the adjacent pre-assembly branch line 1 to the final assembly branch line 2 for stacking to form an electric fuel cell stack 5. In this embodiment, during the assembly process of the electric fuel cell stack 5, the electrode a2 includes a positive electrode and a negative electrode; therefore, two pre-assembly branch lines 1 are configured, and the final assembly branch line 2 is located between the two pre-assembly branch lines 1. The two pre-assembly branch lines 1 have identical structures and are used for pre-assembling the positive and negative electrodes, respectively. Figure 1 As shown, in this embodiment, there are two transfer mechanisms 4, which are set up one-to-one with the two pre-assembly branches 1. The distance between the transfer mechanism 4 and the material preparation mechanism 3, the final assembly branch 2 and the adjacent pre-assembly branch 1 is relatively large. This allows the bipolar plate a1, sealing gasket a3 and diaphragm a4 on the material preparation mechanism 3 and the electrode a2 on the pre-assembly branch 1 to be transferred to the final assembly branch 2 and stacked to form an electrode stack 5. The spatial layout is reasonable, occupies little production space, and is conducive to reducing costs and improving production efficiency.

[0036] In this embodiment, as Figure 1 As shown, the material preparation mechanism 3 includes a first material preparation mechanism 31 and a second material preparation mechanism 32. The first material preparation mechanism 31 holds the bipolar plate a1, and the second material preparation mechanism 32 holds the sealing gasket a3 and the diaphragm a4.

[0037] In this embodiment, one of the pre-installed branch lines 1 is used as an example for explanation.

[0038] like Figure 1As shown, the pre-assembly branch line 1 includes a conveying fixture 18, a feeding mechanism 11, a return line 10, and a discharging mechanism 12. The conveying fixture 18 reciprocates between the feeding mechanism 11 and the discharging mechanism 12 via the return line 10. The conveying fixture 18 is used to convey electrode a2. Between the feeding mechanism 11 and the discharging mechanism 12, in the conveying direction of the return line 10, a first assembly mechanism 13, a first NG mechanism 1a, a flipping mechanism 14, a first dispensing mechanism 15, an adhesive detection mechanism 16, a second NG mechanism 1b, a second assembly mechanism 17, and a maintenance mechanism 1c are arranged in sequence. The first assembly mechanism 13 is located close to the feeding mechanism 11, and the maintenance mechanism 1c is located close to the discharging mechanism 12. In this embodiment, the return line 10 has a double-layer structure, including a conveying bracket (not shown in the figure). Two first conveying lines 101 are vertically spaced on the conveying bracket. The upper first conveying line 101 conveys the conveying fixture 18 from the loading mechanism 11 towards the unloading mechanism 12, and the lower first conveying line 101 conveys the conveying fixture 18 from the unloading mechanism 12 towards the loading mechanism 11. In this embodiment, the conveying direction of the return line 10 mentioned above refers to the direction from the loading mechanism 11 to the unloading mechanism 12; that is, the upper first conveying line 101 is used for feeding, and the lower first conveying line 101 is used for recycling the return conveying fixture 18. In this embodiment, the liquid flow frame a21 and the partition a22 are precisely assembled by the first assembly mechanism 13, and the liquid flow frame a21 and the carbon felt a23 are precisely assembled by the second assembly mechanism 17. In the conveying direction of the liquid flow frame a21, by configuring the NG mechanism and the detection and maintenance mechanism 1c, defective products can be inspected or rejected, which helps to improve the production cycle and ensure the product yield.

[0039] like Figure 2As shown, the feeding mechanism 11 includes a feeding frame 111, on which a feeding space 1111 and a first return space 1112 are arranged. A first lifting mechanism 112 is arranged in the first return space 1112 for transferring the conveying fixture 18 from the lower first conveying line 101 to the upper first conveying line 101. In this embodiment, the end of the first conveying line 101 extends to the first lifting mechanism 112. After the lower first conveying line 101 returns the conveying fixture 18 to the first lifting mechanism 112, the first lifting mechanism 112 lifts the conveying fixture 18 and transfers it to the upper first conveying line 101. The feeding space 1111 stores a liquid flow frame a21 through a first trolley 113. Specifically, the first return space 1112 and the loading space 1111 are arranged adjacent to each other. A loading gantry 1113 is mounted on the loading frame 111, and a loading gripper 1114 is mounted on the loading gantry 1113. Under the action of the loading gantry 1113, the loading gripper 1114 transfers the liquid flow frame a21 in the loading space 1111 to the conveying fixture 18 in the first return space 1112. In this embodiment, the loading gripper 1114 uses negative pressure adsorption to grip the liquid flow frame a21, which is prior art. The structure and working principle of the loading gripper 1114 are prior art and will not be described in detail here.

[0040] like Figure 2 and Figure 3 As shown, a fixed support plate 1131 is mounted on the first trolley 113. Multiple vertically extending guards 1133 are provided on the upper side of the fixed support plate 1131, which together enclose and limit the liquid flow frame a21. A movable support plate 1132 is provided on the upper side of the fixed support plate 1131, and the liquid flow frame a21 is stacked on the movable support plate 1132. Furthermore, a lifting mechanism 114 is also installed in the loading space 1111. The lifting mechanism 114 is used to lift the movable support plate 1132 to maintain the uppermost liquid flow frame a21 at a consistent vertical height, so that the loading gripper 1114 can quickly and accurately pick up the material.

[0041] The lifting mechanism 114 includes a first main longitudinal frame plate 1141 disposed on the loading frame 111. A first secondary longitudinal frame plate 1142 is adjustablely disposed on the first main longitudinal frame plate 1141 in the vertical direction. An extension frame 1143 is disposed on the first secondary longitudinal frame plate 1142. A top plate 1144 is disposed on the extension frame 1143. A clearance slot 1134 corresponding to the top plate 1144 is provided through the fixed support plate 1131. The top plate 1144 can pass through the clearance slot 1134 and abut against the movable support plate 1132. Optionally, the first secondary longitudinal frame plate 1142 is slidably connected to the first main longitudinal frame plate 1141 through a slide rail slider assembly and is driven by a linear module mounted on the first main longitudinal frame plate 1141 to slide in the vertical direction. With this configuration, the moving support plate 1132 can be driven to move longitudinally through the top plate 1144, so as to keep the uppermost liquid flow frame a21 stacked on the moving support plate 1132 at a certain vertical height.

[0042] like Figure 4 As shown, the first lifting mechanism 112 includes a second main longitudinal frame plate 1121 disposed on the loading frame 111, and a second auxiliary longitudinal frame plate 1122 is slidably mounted on the second main longitudinal frame plate 1121 in the vertical direction via a slide rail slider assembly. Optionally, the second auxiliary longitudinal frame plate 1122 is driven by a chain structure disposed on the second main longitudinal frame plate 1121. In another embodiment, a cylinder or linear module may also be disposed on the second main longitudinal frame plate 1121 to drive the second auxiliary longitudinal frame plate 1122.

[0043] To facilitate a smooth transition between the conveying fixture 18 and the first conveying line 101 and the first lifting mechanism 112, a plurality of rollers 1123 are rotatably mounted on the second auxiliary longitudinal plate 1122. Further, the plurality of rollers 1123 are spaced apart. In some embodiments, the second auxiliary longitudinal plate 1122 is provided with a first positioning pin 1124, which is connected to the second auxiliary longitudinal plate 1122 via a cylinder (not shown in the figure) provided on the second auxiliary longitudinal plate 1122. Under the action of the cylinder, the first positioning pin 1124 can extend upward through the gap between two adjacent rollers 1123. It can be understood that, correspondingly, the conveying fixture 18 is provided with a positioning hole 181 corresponding to the first positioning pin 1124 to ensure the stability of the conveying fixture 18 during vertical movement.

[0044] like Figure 5As shown, the first assembly mechanism 13 includes a first frame 131, on which a first dispensing pressure plate 132 is disposed; a return line 10 passes through the first frame 131; when the conveying fixture 18 on the return line 10 is in the first assembly mechanism 13, the conveying fixture 18 is below the first dispensing pressure plate 132, and a liquid flow frame a21 is mounted on the conveying fixture 18; a first dispensing assembly 133 and a first gripping assembly 134 are also adjustablely mounted on the first frame 131; the first dispensing assembly 133 is used to dispense adhesive onto the liquid flow frame a21, and the first gripping assembly 134 is used to grip the partition a22 and attach the partition a22 to the liquid flow frame a21; a clearance hole 1321 is provided through the first dispensing pressure plate 132 for the partition a22 to pass through. Figure 5 As shown, the first dispensing assembly 133 and the first gripping assembly 134 are both adjustablely mounted on the top of the first frame 131 via the first gantry structure 135. The first dispensing assembly 133 can be any existing dispensing mechanism, which is not limited here. It is used to dispense adhesive to the corresponding area of ​​the liquid flow frame a21 so that the liquid flow frame a21 can be bonded to the partition a22.

[0045] like Figure 7 The diagram shows the exploded structure of electrode a2. Specifically, the upper side of the liquid flow frame a21 is provided with a molding groove a211 for assembling the partition a22, and the shape of the partition a22 is adapted to the shape of the molding groove a211. As mentioned above, the first dispensing assembly 133 is used to dispense adhesive onto the bottom inner side of the molding groove a211, and the first gripping assembly 134 is used to grip the partition a22 and assemble it into the molding groove a211.

[0046] In use, the first dispensing plate 132 works with the conveying fixture 18 to position and flatten the liquid flow frame a21. The molding groove a211 is exposed upward through the clearance hole 1321 to facilitate the operation of the first dispensing assembly 133. At the same time, it is convenient for the first gripping assembly 134 to smoothly assemble the partition a22 into the molding groove a211, ensuring the assembly accuracy of the partition a22 and the liquid flow frame a21.

[0047] In this embodiment, the storage of the partition a22 is the same as that of the liquid flow frame a21 described above. The first gripping component 134 is fed by the first trolley 113 and the lifting mechanism 114, which will not be described again here.

[0048] like Figure 8As shown, the first gripping assembly 134 includes a first hanger 1341, which is mounted on a first gantry structure 135 mounted on a first frame 131. A first base plate 1342 is disposed at the bottom of the first hanger 1341. A first guide post 1345 extending vertically is disposed on the first base plate 1342, penetrating the first base plate 1342 and slidably connected to it via a linear bearing. A connecting plate 1344 is disposed at the upper end of the first guide post 1345, and a first support plate 1343 is disposed at the lower end. A first drive cylinder 13421 is disposed on the first base plate 1342, acting on the connecting plate 1344 to enable it to move vertically. Several gripping suction cups 1346 are disposed on the first support plate 1343 to grip the partition a22 using negative pressure. In this embodiment, multiple first guide posts 1345 share a connecting plate 1344 to drive the first support plate 1343 by linking multiple first guide posts 1345 together.

[0049] Furthermore, an assembly block 13431 is disposed on the first support plate 1343, and the first support plate 1343 is located between the assembly block 13431 and the first base plate 1342. A second guide post 13432 extending downward in the vertical direction is disposed on the assembly block 13431. A buffer spring 13433 and a pressure holding block 13434 are sleeved on the second guide post 13432, and the buffer spring 13433 is located between the pressure holding block 13434 and the assembly block 13431. In this embodiment, a guide square hole 134341 is disposed on the pressure holding block 13434, and a square shaft segment 134321 adapted to the guide square hole 134341 is disposed on the second guide post 13432, so that the pressure holding block 13434 can move vertically within the range of the square shaft segment 134321. Furthermore, a buffer hole is provided on the lower side of the pressure holding block 13434, which is coaxially connected to the guide square hole 134341. An anti-fall screw (not shown in the figure) connected to the lower end of the second guide post 13432 is installed in the buffer hole to prevent the pressure holding block 13434 from disengaging from the second guide post 13432. Since there are inevitably gaps between the stacked partitions a22, by setting the pressure holding block 13434, the pressure holding block 13434 contacts the partition a22 before the gripping suction cup 1346 contacts the partition a22 and presses it tightly. During this process, the pressure holding block 13434 moves upward relative to the second guide post 13432 and compresses the buffer spring 13433, which is conducive to the gripping suction cup 1346 fully adhering to the partition a22. In use, the first hanger 1341 moves in both horizontal and vertical directions through a linear module mounted on the first gantry structure 135. The first gantry structure 135 itself can move in the horizontal direction. It should be noted that the horizontal movement direction of the first gantry structure 135 itself is perpendicular to the horizontal movement direction of the first hanger 1341 driven by the linear module, thereby enabling the first hanger 1341 to move in three-dimensional space.

[0050] Similarly, the first dispensing assembly 133 can also move in three-dimensional space through the above structure, that is, the first hanger 1341 can be replaced with the first dispensing assembly 133.

[0051] like Figure 6 and Figure 9As shown, a shaping plate 136 is adjustablely provided on the first adhesive pressing plate 132 along the width direction of the partition a22. The shaping plate 136 has a shaping plane 1360 for supporting the partition a22. Width limiting blocks 1361 are provided on both sides of the shaping plate 136 in the width direction of the partition a22, and length limiting blocks 1362 are provided on both sides of the shaping plate 136 in the length direction of the partition a22. The width limiting blocks 1361, length limiting blocks 1362, and shaping plane 1360 constitute the positioning space of the partition a22. Optionally, the shaping plate 136 is slidably connected to the first adhesive pressing plate 132 via a slide rail slider assembly and is driven by a cylinder provided on the first adhesive pressing plate 132 to slide relative to the first adhesive pressing plate 132. In this embodiment, both the width limiting blocks 1361 and the length limiting blocks 1362 are driven by cylinders provided on the shaping plate 136 and corresponding to each limiting block. In use, after the first gripping component 134 grips the partition a22 and moves it above the clearance hole 1321, the shaping plate 136 moves to the area between the partition a22 and the clearance hole 1321. The first gripping component 134 places the partition a22 in the positioning space, specifically placing the partition a22 on the shaping plane 1360. After the partition a22 is repositioned by the combined action of the length limiting block 1362 and the width limiting block 1361, the length limiting block 1362 and the width limiting block 1361 are reset. At this time, the first gripping component 134 grips the partition a22 to remove it from the shaping plane 1360. Then the shaping plate 136 is reset to expose the clearance hole 1321. Finally, the partition a22 is attached to the fluid flow frame a21 through the clearance hole 1321. This setting ensures the assembly accuracy of the partition a22 on the fluid flow frame a21.

[0052] It should be noted that the conveying support is equipped with a lifting mechanism 19, which is used to drive the conveying fixture 18 to detach from the first conveying assembly line 101 in the vertical direction. Specifically, the lifting mechanism 19 is provided at each workstation corresponding to the first assembly mechanism 13, the first NG mechanism 1a, the flipping mechanism 14, the first dispensing mechanism 15, the glue detection mechanism 16, the second assembly mechanism 17, and the maintenance mechanism 1c.

[0053] like Figure 10 As shown, the lifting mechanism 19 includes a second base plate 191 and a lifting plate 192. The second base plate 191 is fixedly mounted on the conveying bracket. A third guide post is disposed on the lifting plate 192, extending vertically and penetrating the second base plate 191. The third guide post is slidably connected to the second base plate 191 via a linear bearing. The lifting plate 192 is driven by a cylinder disposed on the second base plate 191, enabling the lifting plate 192 to move vertically. In this embodiment, a second positioning pin 1921 is disposed on the lifting plate 192, which is adapted to the positioning hole 181 on the conveying fixture 18. This ensures the stability of the conveying fixture 18 during the lifting process.

[0054] In the first assembly mechanism 13, the lifting plate 192 can drive the conveying fixture 18 to move vertically toward the first point glue plate 132 to disengage from the first conveying line 101, and cooperate with the first point glue plate 132 to press the positioning liquid flow frame a21.

[0055] like Figure 11 As shown, the first NG mechanism 1a includes a second frame 1a1, through which the return line 10 passes to transport the conveying fixture 18 to the workstation of the first NG mechanism 1a. A second gantry structure 1a2 is configured on the second frame 1a1. A second gripping assembly 1a5 is adjustable in the vertical direction on the gantry beam of the second gantry structure 1a2 for gripping the combination of the fluid flow frame a21 and the partition plate a22 on the conveying fixture 18. In some embodiments, the second gripping assembly 1a5 has the same structure as the first gripping assembly 134, and the second gripping assembly 1a5 may not be equipped with the pressure holding block 13434.

[0056] In this embodiment, a first vision component 1a3 is disposed on the second gripping component 1a5. The first vision component 1a3 includes an assembly plate 1a31 disposed on the second gripping component 1a5. An adjustment plate 1a33 is adjustablely disposed on the assembly plate 1a31 via a first linear module 1a32. A CCD camera bracket 1a35 is mounted on the adjustment plate 1a33 for mounting a CCD camera. In this embodiment, the adjustment plate 1a33 and the CCD camera bracket 1a35 are connected by a slide cylinder 1a34, so that the height of the CCD camera bracket 1a35 can be adjusted in the vertical direction. Figure 11 As shown, this configuration enables the CCD camera bracket 1a35, i.e., the CCD camera, to be positioned in three-dimensional space, thereby allowing for effective detection of the assembly consisting of the fluid flow frame a21 and the partition a22. In use, qualified assemblies are transported to the next station via the conveying fixture 18, while unqualified assemblies are gripped and recycled by the second gripping component 1a5. In this embodiment, the first NG mechanism 1a further includes a first recycling carrier 1a4, which includes a second trolley with a carrier plate 1a41 for carrying unqualified assemblies.

[0057] like Figure 12As shown, the flipping mechanism 14 includes a third frame 141, through which the return line 10 passes. Lifting and flipping assemblies are arranged at both ends of the return line 10 in the width direction on the third frame 141. Each lifting and flipping assembly includes a third base plate 1411 fixedly mounted on the third frame 141. A flipping mounting plate 1412 is provided on the upper side of the third base plate 1411. Multiple fourth guide posts 1413 are arranged on the flipping mounting plate 1412. The fourth guide posts 1413 extend vertically and penetrate the third base plate 1411. The fourth guide posts 1413 are slidably connected to the third base plate 1411 via linear bearings. A cylinder is arranged on the third base plate 1411 for driving the flipping mounting plate 1412 to move vertically. Furthermore, a flip seat 1414 is adjustablely provided on the flip mounting plate 1412 along the width direction of the return line 10. Specifically, the flip seat 1414 is slidably connected to the flip mounting plate 1412 via a slide rail slider assembly, and the flip seat 1414 is driven by a cylinder provided on the flip mounting plate 1412. Figure 12 and Figure 13 As shown, a flip plate 1415 is rotatably mounted on the flip base 1414. The flip plate 1415 is driven to rotate by a motor mounted on the flip base 1414. Two gripper heads 1416 are slidably mounted on the flip plate 1415 via a slide rail slider assembly. The two gripper heads 1416 are driven by gripper cylinders 1417 mounted on the flip plate 1415 and are used to grip the assembly on the conveying fixture 18.

[0058] It should be noted that the conveying fixture 18 is provided with a clearance notch 182 for accommodating the gripper head 1416. In use, the lifting mechanism 19 located at the flipping mechanism 14 lifts the conveying fixture 18 to disengage from the first conveying line 101. Then, the flipping mounting plate 1412 moves downward in the vertical direction so that the assembly is between the two gripper heads 1416. Then, the flipping seat 1414 is driven to move along the width direction of the return line 10, which is also the width direction of the first conveying line 101, so that the gripper heads 1416 approach and can clamp the assembly of the liquid flow frame a21 and the partition a22 within the clearance notch 182. The gripper cylinder 1417 acts on the gripper heads 1416 to clamp the assembly. Then, the flipping mounting plate 1412 moves upward in the vertical direction to disengage the assembly from the conveying fixture 18, leaving enough flipping space. Finally, the flipping plate 1415 flips 180° and puts the assembly back into the conveying fixture 18. The flipping mounting plate 1412 and the flipping seat 1414 are then reset.

[0059] like Figure 14As shown, the first dispensing mechanism 15 includes a fourth frame 151, through which the return line 10 passes. A second dispensing plate 152 is disposed on the fourth frame 151, and dispensing holes 1521 are provided through the second dispensing plate 152. A second dispensing assembly 154 is assembled on the fourth frame 151 via a third gantry structure 153. In some embodiments, the first dispensing assembly 133 and the second dispensing assembly 154 have the same structure, which will not be described in detail here. The sealant on the back side of the flow frame a21 is used to seal and bond adjacent electrodes a2 during the stacking process. It should be noted that during use, the lifting mechanism 19 assembled at the first dispensing mechanism 15 lifts the delivery fixture 18 to disengage from the return line 10, and causes the delivery fixture 18 to cooperate with the second dispensing plate 152 to press and flatten the flow frame a21, thereby ensuring the dispensing accuracy on the back side of the flow frame a21.

[0060] like Figure 15 As shown, the glue detection mechanism 16 includes a fifth frame 161, through which the return line 10 passes. A detection pressure plate 162 is disposed on the fifth frame 161. In this embodiment, the structure of the detection pressure plate 162 is the same as that of the second glue plate 152. In use, the lifting mechanism 19 located at the glue detection mechanism 16 lifts the conveying fixture 18 vertically upward to disengage it from the return line 10, and the conveying fixture 18 cooperates with the detection pressure plate 162 to press and fix the liquid flow frame a21 for detection. The glue detection mechanism 16 also includes a second vision component 163 adjustablely mounted on the fifth frame 161 via a fourth gantry structure 164. Optionally, the second vision component 163 is a CCD camera.

[0061] Optionally, the second NG mechanism 1b refers to the first NG mechanism 1a, except that since the glue detection mechanism 16 has already detected the second NG mechanism 1b, the first vision component 1a3 does not need to be set in the second NG mechanism 1b.

[0062] like Figure 16 As shown, the second assembly mechanism 17 includes a sixth frame 171, on which an assembly area 175 and a buffer area 174 are arranged. The return line 10 is located in the buffer area. A fifth gantry structure 172 is arranged on the sixth frame 171. A third gripping component 173 is mounted on the fifth gantry structure 172. The third gripping component 173 is adjustablely mounted on the sixth frame 171 via the fifth gantry structure 172. The third gripping component 173 can reciprocate between the assembly area 175 and the buffer area 174 to grip and transfer the carbon felt a23 located in the buffer area 174 to the assembly area 175 for assembly with the fluid flow frame a21 and the partition a22 to form the electrode a2.

[0063] Furthermore, such as Figure 17As shown, the third gripping assembly 173 includes a second hanger 1731, which is mounted on the fifth gantry structure 172. A fourth base plate 1732 is disposed at the lower end of the second hanger 1731. A first gripping plate 1735 and a second gripping plate 1736 are sequentially disposed on the lower side of the fourth base plate 1732. A fifth guide post 1733 extending vertically upward is disposed on the first gripping plate 1735. The fifth guide post 1733 penetrates the fourth base plate 1732 and is slidably connected to it through a linear bearing. It can be understood that a limiting step or a limiting baffle is disposed at the upper end of the fifth guide post 1733 to prevent the first gripping plate 1735 and the second gripping plate 1736 from detaching from the fourth base plate 1732 under the action of gravity. Furthermore, a return spring 1734 is sleeved on the fifth guide post 1733. The return spring 1734 is located between the fourth base plate 1732 and the first gripping plate 1735. A second drive cylinder 1737 is disposed on the first gripping plate 1735, and a sixth guide post 1738 is disposed on the second gripping plate 1736. The sixth guide post 1738 extends vertically and passes through the first gripping plate 1735, and is slidably connected to the first gripping plate 1735 through a linear bearing. Correspondingly, the upper end of the sixth guide post 1738 is the same as that of the fifth guide post 1733, both of which are provided with a limiting step or a limiting baffle. In this embodiment, the second drive cylinder 1737 acts on the second gripping plate 1736 so that the second gripping plate 1736 can move closer to or away from the first gripping plate 1735 in the vertical direction. In order to successfully grip the carbon felt a23, a plurality of needle-shaped suction cups 17361 are provided on the second gripping plate 1736.

[0064] Optionally, the feeding equipment for carbon felt a23 can refer to the first trolley 113 and the lifting mechanism 114 in the feeding mechanism 11 to ensure that the uppermost carbon felt a23 maintains the same vertical height for easy material handling. Correspondingly, the space enclosed by the side guard 1133 can be used to limit the carbon felt a23, which will not be elaborated here.

[0065] like Figure 7 As shown, the fluid flow frame a21 is provided with an assembly hole a212 for accommodating the carbon felt a23.

[0066] In use, the fifth gantry structure 172 drives the third gripping assembly 173 to move to the buffer area 174, grips the carbon felt a23, and moves it to the assembly area 175. The second hanger 1731 moves downward in the vertical direction to assemble the carbon felt a23 into the assembly hole a212. At this time, the second hanger 1731 maintains its vertical height, and the second drive cylinder 1737 extends. At this time, the first gripping plate 1735 moves upward in the vertical direction and compresses the return spring 1734. This process... The first gripping plate 1735 can apply a certain clamping force to the carbon felt a23 to ensure that the carbon felt a23 can be embedded in the assembly hole a212; then the second drive cylinder 1737 is reset, and the second hanger 1731 moves upward in the vertical direction so that the third gripping component 173 is disengaged from the carbon felt a23, thus completing the assembly of the carbon felt a23 on the liquid flow frame a21. At this point, the assembly of the liquid flow frame a21, the partition plate a22 and the carbon felt a23 is realized, forming the electrode a2.

[0067] It should be noted that the movement of the second hanger 1731 in the width direction and in the vertical direction of the fifth gantry structure 172 is achieved by a linear module installed on the fifth gantry structure 172.

[0068] like Figure 18 As shown, the maintenance mechanism 1c includes a seventh frame 1c1 and a maintenance component 1c3. The return line 10 passes through the seventh frame 1c1, and the maintenance component 1c3 is adjustablely mounted on the seventh frame 1c1 via a sixth gantry structure 1c2. Figure 19As shown, the maintenance component 1c3 includes an extension plate 1c31. The extension plate 1c31 is adjustablely mounted on the sixth gantry structure 1c2 along the width direction of the sixth gantry structure 1c2 via a linear module. A maintenance base block 1c32 is adjustablely arranged on the extension plate 1c31 along the vertical direction. A reference wheel set and a maintenance wheel set are arranged on the maintenance base block 1c32. The maintenance wheel set includes a first wheel frame 1c35 and a limit block 1c37. The limit block 1c37 is fixedly installed on the maintenance base block 1c32. The first wheel frame 1c35 is slidably installed on the maintenance base block 1c32 along the vertical direction via a slide rail slider assembly. The limit block 1c37 is located above the first wheel frame 1c35. A displacement sensor 1c38 is arranged between the first wheel frame 1c35 and the limit block 1c37. The reference wheel assembly includes a second wheel frame 1c33, which is mounted on a maintenance base block 1c32. A second roller 1c34 is rotatably mounted on the second wheel frame 1c33, and a first roller 1c36 is rotatably mounted on the first wheel frame 1c35. In use, the second roller 1c34 abuts against the fluid flow frame a21, and the first roller 1c36 moves along the contour of the assembly hole a212. The second roller 1c34 serves as a reference. If the carbon felt a23 is successfully installed into the assembly hole a212, and the first roller 1c36 maintains a constant vertical height or fluctuates within its allowable stroke range, then the carbon felt a23 is properly assembled. For carbon felt a23 structures that do not enter the assembly hole a212, the first roller 1c36 can press them into the assembly hole a21 during the inspection process. The function of step 2 is to improve the yield rate. However, for those that cannot be repaired, that is, a large part of the carbon felt a23 is not embedded in the assembly hole a212 and is still overlapping the edge of the assembly hole a212 under the action of the first roller 1c36, the thickness of the carbon felt a23 and the liquid flow frame a21 overlaps, causing the first roller 1c36 and the first wheel frame 1c35 to move upward in the vertical direction. This phenomenon is detected by the displacement sensor 1c38, which indicates that the current carbon felt a23 assembly is unqualified, reminding the product to be NG or requiring manual adjustment.

[0069] Optionally, the maintenance base block 1c32 is slidably connected to the extension plate 1c31 via a slide rail slider assembly and is driven by a cylinder provided on the extension plate 1c31.

[0070] like Figure 20 As shown, the unloading mechanism 12 includes an eighth frame 121, on which a second lifting mechanism 122 is configured. The second lifting mechanism 122 has the same structure as the first lifting mechanism 112 and is used to transfer the conveying fixture 18 from the upper first conveying line 101 to the lower first conveying line 101. This will not be described in detail here.

[0071] like Figure 1 , Figure 22 and Figure 24As shown, the assembly branch line 2 includes a second conveyor line 21, on which a stacking fixture 22 is configured. A stacking module 23 is configured at one end of the second conveyor line 21 near the material preparation mechanism 3, and a material unloading module 24 is configured at the other end of the second conveyor line 21. The second conveyor line 21 drives the stacking fixture 22 to reciprocate between the stacking module 23 and the material unloading module 24. The stacking fixture 22 includes a base plate 221, on which multiple limiting posts 224 extend vertically upward. A support plate 222 is assembled within the space defined by the multiple limiting posts 224, and the support plate 222 slides against the limiting posts 224. A bearing block 223 is provided on the base plate 221, and the bearing block 223 is located between the base plate 221 and the support plate 222.

[0072] Further, the stacking module 23 includes a stacking frame 231, on which a lifting suspension 232 is adjustable in the vertical direction, extending between the base plate 221 and the support plate 222. In this embodiment, the lifting suspension 232 is slidably connected to the stacking frame 231 via a slide rail slider assembly, and a lead screw drive assembly is configured on the stacking frame 231 to drive the lifting suspension 232 to move in the vertical direction. In this embodiment, the transfer mechanism 4 is a robotic arm, which transfers the electrode a2, diaphragm a4, bipolar plate a1, and sealing gasket a3 onto the support plate 222 in the stacking sequence to form the electrode stack 5. During use, the lifting suspension 232 is in a high position, and its height continuously decreases as the number of layers of the electrode stack 5 increases, so that the top height of the electrode stack 5 is at a certain level, so as to facilitate the stacking by the transfer mechanism 4.

[0073] like Figure 23 As shown, the unloading module 24 includes an unloading frame 241, on which a tilting frame 242 is rotatably mounted. The tilting frame 242 includes a first plate 2421 and a second plate 2422 connected to each other. The first plate 2421 and the second plate 2422 are perpendicular to each other. The stacking fixture 22 can be transported to the first plate 2421 and abut against the second plate 2422 via the second conveyor line 21. Specifically, the tilting frame 242 is driven to tilt by a cylinder mounted on the unloading frame 241. In use, the second conveyor line 21 transports the stacking fixture 22 together with the fuel cell stack 5 to the top of the first plate 2421 and abuts against the second plate 2422. At this time, the cylinder drives the tilting frame 242 to tilt 90°, so that the second plate 2422 is horizontal and the first plate 2421 is perpendicular to the ground, which facilitates the unloading of the fuel cell stack 5. After unloading, the flipping frame 242 is reset, and the stacking fixture 22 is transported back to the stacking module 23 via the second conveyor line 21 for the next stacking of the electric stack 5.

[0074] In some embodiments, a fixture limiting head 24211 is disposed on the first shelf 2421, and the stacking fixture 22 is at least partially located between the fixture limiting head 24211 and the first shelf 2421. The fixture limiting head 24211 is used to limit the stacking fixture 22 during the unloading process, which facilitates the separation of the electric stack 5 and the stacking fixture 22 and prevents the stacking fixture 22 from detaching from the first shelf 2421.

[0075] In some embodiments, an extended limiting rod (not shown in the figure) is provided on the second frame plate 2422. The extended limiting rod is perpendicular to the second frame plate 2422 and is used to limit the fuel cell stack 5 to maintain the stability of the fuel cell stack 5 during the unloading process. The extended limiting rod is provided on both sides of the second frame plate 2422 in the width direction. Figure 23 As shown, the width direction of the second frame plate 2422 is parallel to the width direction of the second conveyor line 21, that is, parallel to the rotating shaft 2411 of the tilting frame 242 rotating around the unloading frame 241.

[0076] In summary, the fuel cell assembly line provided in this application can significantly reduce the product defect rate, overcome the technical problems of high product defect rate and poor consistency in the prior art, and help improve production efficiency.

[0077] The technical means disclosed in this utility model are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications are also considered within the scope of protection of this utility model.

Claims

1. A fuel cell stack assembly line, characterized in that, The device includes a pre-assembly branch line, a material preparation mechanism, a transfer mechanism, and a final assembly branch line. The pre-assembly branch line is arranged adjacent to the final assembly branch line. The material preparation mechanism is located at one end of the final assembly branch line. The transfer mechanism is located between the final assembly branch line and the material preparation mechanism. The material preparation mechanism is used to store diaphragms, bipolar plates, and sealing gaskets. The pre-assembly branch line is used to assemble fluid flow frames, diaphragms, and felt to form electrodes. The transfer mechanism is used to transfer diaphragms, bipolar plates, sealing gaskets, and electrodes from adjacent pre-assembly branch lines to the final assembly branch line for stacking to form an electrode stack.

2. The fuel cell stack assembly line according to claim 1, characterized in that, The pre-assembled branch line includes a conveying fixture, a feeding mechanism, a return line, and a discharging mechanism. The conveying fixture reciprocates between the feeding mechanism and the discharging mechanism via the return line. The conveying fixture is used to convey the electrodes. Between the feeding mechanism and the unloading mechanism, in the conveying direction of the return line, there are sequentially arranged a first assembly mechanism, a first NG mechanism, a flipping mechanism, a first dispensing mechanism, an adhesive detection mechanism, a second NG mechanism, a second assembly mechanism, and a maintenance mechanism, wherein the first assembly mechanism is located close to the feeding mechanism and the maintenance mechanism is located close to the unloading mechanism.

3. The fuel cell stack assembly line according to claim 2, characterized in that, The return line includes a conveying bracket, on which two first conveying lines are arranged at intervals along the vertical direction. The first conveying line on the upper side is used to convey the conveying fixture from the loading mechanism to the unloading mechanism, and the first conveying line on the lower side is used to convey the conveying fixture from the unloading mechanism to the loading mechanism.

4. The fuel cell stack assembly line according to claim 3, characterized in that, The feeding mechanism includes a feeding frame, on which a feeding space and a first return space are configured. A first lifting mechanism is configured in the first return space for transferring the conveying fixture from the lower first conveying line to the upper first conveying line.

5. The fuel cell stack assembly line according to claim 4, characterized in that, The loading space is equipped with a first trolley and a lifting mechanism; The first trolley is equipped with a fixed support plate, and the upper side of the fixed support plate is provided with a baffle extending upward in the vertical direction. Multiple baffles surround and limit the liquid flow frame. The upper side of the fixed support plate is provided with a movable support plate, and the liquid flow frame is stacked on the movable support plate. The lifting mechanism includes a first main longitudinal frame plate disposed on the feeding frame. A first secondary longitudinal frame plate is adjustablely disposed on the first main longitudinal frame plate in the vertical direction. An extension frame is disposed on the first secondary longitudinal frame plate. A top plate is disposed on the extension frame. An avoidance slot corresponding to the top plate is provided through the fixed support plate. The top plate can pass through the avoidance slot and abut against the movable support plate.

6. The fuel cell stack assembly line according to claim 5, characterized in that, The first lifting mechanism includes a second main longitudinal frame plate disposed on the feeding machine frame, and a second auxiliary longitudinal frame plate is slidably mounted on the second main longitudinal frame plate in the vertical direction; Several rollers are rotatably mounted on the second auxiliary longitudinal plate.

7. The fuel cell stack assembly line according to claim 2, characterized in that, The first assembly mechanism includes a first frame, on which a first dispensing pressure plate is disposed. The return line passes through the first frame. When the conveying fixture on the return line is in the first assembly mechanism, the conveying fixture is located below the first dispensing pressure plate. A liquid flow frame is mounted on the conveying fixture. A first dispensing assembly and a first gripping assembly are also adjustablely mounted on the first frame. The first dispensing assembly is used to dispense adhesive onto the liquid flow frame, and the first gripping assembly is used to grip a partition and attach the partition to the liquid flow frame. The first point of the adhesive plate has a through hole for passing through the partition.

8. The fuel cell stack assembly line according to claim 7, characterized in that, A shaping plate is adjustablely provided on the first adhesive pressing plate along the width direction of the partition. The shaping plate is provided with a shaping plane for supporting the partition. Width limiting blocks are provided on both sides of the shaping plate in the width direction of the partition, and length limiting blocks are provided on both sides of the shaping plate in the length direction of the partition. The width limiting blocks, the length limiting blocks and the shaping plane constitute the positioning space of the partition.

9. The fuel cell stack assembly line according to claim 7, characterized in that, The first gripping component includes a first hanger, which is adjustablely mounted on a first frame. A first base plate is provided at the bottom of the first hanger. A first guide post extending vertically is disposed on the first base plate. The first guide post passes through the first base plate and is slidably connected to it. A connecting plate is disposed at the upper end of the first guide post, and a first support plate is disposed at the lower end of the first guide post. A first driving cylinder is disposed on the first base plate, and the first driving cylinder acts on the connecting plate to enable it to move vertically. Several gripping suction cups are disposed on the first support plate.

10. The fuel cell stack assembly line according to claim 9, characterized in that, An assembly block is disposed on the first support plate, and the first support plate is located between the assembly block and the first base plate. A second guide post extending downward in the vertical direction is disposed on the assembly block. A buffer spring and a pressure holding block are disposed on the outer sleeve of the second guide post, and the buffer spring is located between the pressure holding block and the assembly block.

11. The fuel cell stack assembly line according to claim 10, characterized in that, The pressure holding block is provided with a guide square hole, and the second guide post is provided with a square shaft section that matches the guide square hole; The lower side of the pressure holding block is provided with a buffer hole, which is coaxially connected to the guide square hole. An anti-fall screw connected to the lower end of the second guide post is installed in the buffer hole.

12. The fuel cell stack assembly line according to claim 2, characterized in that, The first NG mechanism includes a second frame through which the return line passes. A second gripping assembly is adjustablely mounted on the second frame for gripping a combination of a fluid flow frame and a partition on a delivery fixture. The second grasping component is provided with a first vision component, the first vision component includes an assembly plate disposed on the second grasping component, the assembly plate is adjustablely provided with an adjustment plate, and a CCD camera bracket is mounted on the adjustment plate for mounting a CCD camera.

13. The fuel cell stack assembly line according to claim 2, characterized in that, The flipping mechanism includes a third frame through which the return line passes. Lifting and flipping assemblies are arranged at both ends of the third frame in the width direction of the return line. Each lifting and flipping assembly includes a third base plate fixedly mounted on the third frame. A flipping mounting plate is provided on the upper side of the third base plate. Multiple fourth guide posts are arranged on the flipping mounting plate. The fourth guide posts extend vertically and penetrate the third base plate, and are slidably connected to the third base plate. A cylinder for driving the flipping mounting plate to move vertically is arranged on the third base plate.

14. The fuel cell stack assembly line according to claim 2, characterized in that, The second assembly mechanism includes a sixth frame, on which an assembly area and a buffer area are configured, the return line is located in the buffer area, and a third gripping component is adjustablely provided on the sixth frame, the third gripping component being capable of reciprocating between the assembly area and the buffer area.

15. The fuel cell stack assembly line according to claim 14, characterized in that, The third gripping component includes a second hanger, a fourth base plate is disposed at the lower end of the second hanger, a first gripping plate and a second gripping plate are disposed sequentially on the lower side of the fourth base plate, a fifth guide post extending upward in the vertical direction is disposed on the first gripping plate, and the fifth guide post passes through the fourth base plate and is slidably connected to it. The fifth guide post is fitted with a reset spring, which is located between the fourth base plate and the first gripping plate. The first gripping plate is equipped with a second driving cylinder, and the second gripping plate is equipped with a sixth guide post. The sixth guide post extends vertically, passes through the first gripping plate, and is slidably connected to it. The second driving cylinder acts on the second gripping plate so that the second gripping plate can move closer to or further away from the first gripping plate in the vertical direction. The second gripping plate is equipped with several needle-shaped suction cups.

16. The fuel cell stack assembly line according to claim 2, characterized in that, The maintenance mechanism includes a seventh frame and a maintenance assembly, the return line passes through the seventh frame, and the maintenance assembly is adjustablely mounted on the seventh frame; The maintenance assembly includes an extension plate, on which a maintenance base block is adjustable in the vertical direction. A reference wheel set and a maintenance wheel set are provided on the maintenance base block. The maintenance wheel set includes a first wheel frame and a limiting block. The limiting block is fixedly installed on the maintenance base block. The first wheel frame is slidably installed on the maintenance base block in the vertical direction. The limiting block is located above the first wheel frame. A displacement sensor is disposed between the first wheel frame and the limiting block. The reference wheel set includes a second wheel frame, which is mounted on the maintenance base block. A second roller is rotatably mounted on the second wheel frame, and a first roller is rotatably mounted on the first wheel frame.

17. The fuel cell stack assembly line according to claim 1, characterized in that, The assembly line includes a second conveyor line, on which a stacking fixture is configured. A stacking module is configured at one end of the second conveyor line near the material preparation mechanism, and a unloading module is configured at the other end of the second conveyor line. The second conveyor line drives the stacking fixture to reciprocate between the stacking module and the unloading module. The stacking fixture includes a base plate, on which multiple limiting posts are provided extending upward in the vertical direction. A support plate is assembled within the space defined by the multiple limiting posts, and the support plate slides against the limiting posts. A support block is disposed on the base plate, and the support block is located between the base plate and the support plate.

18. The fuel cell stack assembly line according to claim 17, characterized in that, The stacking module includes a stacking frame, on which a lifting suspension is adjustable in the vertical direction, extending between the base plate and the support plate.

19. The fuel cell stack assembly line according to claim 17, characterized in that, The unloading module includes an unloading frame, on which a flipping frame is rotatably mounted. The flipping frame includes a first frame plate and a second frame plate connected to each other. The first frame plate is perpendicular to the second frame plate. The stacking fixture can be transported to the first frame plate via the second conveyor line and abut against the second frame plate.

20. The fuel cell stack assembly line according to claim 19, characterized in that, The first shelf is provided with a fixture limiting head, and the stacking fixture is at least partially located between the fixture limiting head and the first shelf.

21. The fuel cell stack assembly line according to claim 19, characterized in that, An extension limiting rod is provided on the second frame plate, and the extension limiting rod is perpendicular to the second frame plate; The extension limiting rods are arranged on both sides in the width direction of the second frame plate; The width direction of the second frame plate is parallel to the axis of rotation of the tilting frame around the unloading frame.

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