A fuel cell steel strip automatic bundling welding device

Abstract

The present invention discloses an automatic steel strip bundling welding device for fuel cells. The device includes an automatic steel strip feeding device and a press-fit bundling welding device; fuel cells are stacked on a stacking tool, and after stacking, the automatic steel strip feeding device prepares and cuts the finished steel strips. After the steel strips are prepared, they are placed in the steel strip installation position of the press-fit bundling welding device, and the lifting platform of the press-fit bundling welding device performs pressing. After pressing, the steel strip bending mechanism bends the steel strip, and after bending, the steel strip tensioning mechanism tensions the steel strip, and the laser welding mechanism welds the tensioned steel strip, and all steel strip welding is completed in sequence. The device solves the installation convenience problem in the automatic feeding process of fuel cell straps, improves the assembly accuracy of fuel cell straps, and thus improves the product quality rate; the device has a simple structure, is easy to operate and use, reduces the labor intensity, and improves production efficiency; the overall structure is clean and pollution-free, and effectively protects the environment.

Description

Technical Field

[0001] The invention relates to the technical field of fuel cell production equipment, and in particular to an automatic bundling and welding device for fuel cell steel strips. Background Art

[0002] A fuel cell is a chemical device that converts the chemical energy of a fuel directly into electrical energy. In the prior art, the final stage of fuel cell assembly is to tie the fuel cell with steel tie ties, which are then welded and fixed at the tie joints. In the prior art, some welding equipment without a pressing device cannot determine whether the tie joints are fitted, which easily results in a cold weld.

[0003] In some other existing technologies, fuel cell press welding is done by manual welding, which has low efficiency and does not meet assembly welding requirements. Summary of the invention

[0004] The purpose of the present invention is to address the above-mentioned deficiencies in the prior art and to provide an automatic fuel cell steel strip bundling and welding device that improves the assembly accuracy of fuel cell straps, reduces manual labor intensity, and improves production efficiency.

[0005] The fuel cell steel strip automatic bundling and welding device of the present invention comprises a steel strip automatic feeding device and a press-fit bundling and welding device;

[0006] The automatic steel strip feeding device comprises a steel strip unloading mechanism, a first punching mechanism, a steel strip cutting mechanism and a second punching mechanism which are sequentially arranged, wherein the steel strip unloading mechanism comprises a structural plate, a unloading motor, a unloading disk and a guide pressing wheel, the structural plate is vertically arranged, the unloading motor is installed on the back of the structural plate, the power end of the unloading motor passes through the structural plate and extends to the front of the structural plate, the axis of the unloading disk is installed on the power of the unloading motor, and the steel strip is wound on the unloading disk; the first punching mechanism and the second punching mechanism have punching positions, the steel strip cutting mechanism has a cutting position, and the punching position of the first punching mechanism, the punching position of the second punching mechanism, and the cutting position of the steel strip cutting mechanism are on the same horizontal line;

[0007] The press-fit binding welding device includes a first platform, a second platform, a lifting platform driving mechanism, a first guide column, a lifting platform, a welding mechanism displacement component, a laser welding mechanism, a steel belt bending mechanism and a steel belt tensioning mechanism, wherein there are multiple first guide columns, and the lower end of the first guide column is fixed to the top surface of the first platform, the top end of the first guide column is fixedly connected to the bottom surface of the second platform, and the multiple first guide columns are parallel to each other, the lifting platform is located between the first platform and the second platform, and the lifting platform can be installed on the first guide column and can slide vertically along the first guide column, the lifting platform driving mechanism is installed between the lifting platform and the second platform, and the power end of the lifting platform driving mechanism is connected to the lifting platform. The lowering platform is used to drive the lifting platform to move vertically. The top surface of the lifting platform is provided with a welding mechanism displacement assembly. The laser welding mechanism is installed at the power end of the welding mechanism displacement assembly. The middle part of the lifting platform is hollowed out. The middle part of the top surface of the first platform is a fuel cell placement position. The welding mechanism displacement assembly drives the laser welding mechanism to move and press-fits and welds the fuel cell at the fuel cell placement position through the hollow part of the lifting platform. There are two groups of steel belt bending mechanisms, which are respectively arranged on both sides of the length direction of the top of the first platform. The steel belt bending mechanism is used to bend the steel belt on the opposite sides of the fuel cell placement position and bundle the fuel cell; the steel belt tensioning mechanism is used to tension the bent steel belts on both sides.

[0008] Furthermore, the steel strip bending mechanism includes an articulated seat, a cylinder, a connecting rod, an end bearing seat, a rotating shaft and a bending pressure head. A fuel cell platform is provided on the top surface of the first platform, and at least two end bearing seats are provided on the side of the fuel cell platform. The rotating shaft is rotatably mounted on the end bearing seat through a bearing, and the bending pressure head is fixedly connected to the rotating shaft, and one end of the rotating shaft extends out of the end bearing seat; the articulated seat is installed on the top surface of the first platform, and the tail of the cylinder is hinged on the articulated seat, and the protruding end of the cylinder is hinged to the first end of the connecting rod, and the second end of the connecting rod is fixedly connected to the rotating shaft, and the extension and retraction of the cylinder can drive the bending pressure head to rotate through the connecting rod and the rotating shaft.

[0009] Furthermore, there are multiple bending pressure heads, and a middle bearing seat for supporting the rotation of the rotating shaft is provided between two adjacent bending pressure heads.

[0010] Furthermore, the first platform, the second platform and the lifting platform are all rectangular, there are four first guide columns, and the four first guide columns are respectively connected to the corners of the first platform, the second platform and the lifting platform; there are two groups of lifting platform drive mechanisms, and the two groups of lifting platform drive mechanisms are respectively installed on both sides of the second platform and the lifting platform in the width direction; the welding mechanism displacement assembly is a three-dimensional CNC workbench; the top surface of the first platform also has a vertically arranged second guide column, and the lifting platform has a guide hole corresponding to the second guide column.

[0011] Furthermore, the steel belt tensioning mechanism includes a tensioning drive component, a latch drive component and a latch mold, wherein the power end of the latch drive component is connected to the latch mold, the latch drive component is used to drive the latch part of the latch mold to insert into the tensioning hole of the steel belt, the power end of the tensioning drive component is connected to the latch mold, and after the latch part of the latch mold is inserted into the tensioning hole of the steel belt, the latch mold is lifted to make the steel belt form a tensioned state; the tensioning drive component is installed on a lifting platform, and the power end of the tensioning drive component is connected to the latch mold after passing through the lifting platform.

[0012] Furthermore, the latch mold includes a latch guide and a latch structure, the latch guide is in the shape of an elongated strip, the protruding end of the tensioning drive assembly is connected to the latch guide, the latch guide has a guide hole opposite to the tensioning hole, the power end of the latch drive assembly is connected to the back side of the latch structure body, the front side of the latch structure has a latch head, and the latch head is inserted into the guide hole.

[0013] Furthermore, there are two tensioning drive assemblies, and the protruding ends of the two tensioning drive assemblies are respectively connected to the two ends of the length direction of the latch guide.

[0014] Furthermore, the guide hole is a square hole, the pin head is a square bar, and the inner corners of the guide hole are provided with root cleaning grooves so that the outer annular surface of the pin head fits with the inner side surface of the guide hole.

[0015] Furthermore, a guide pressing wheel is provided on the structural plate, and the guide pressing wheel is located between the steel strip unloading mechanism and the first punching mechanism, and the pressing surface of the guide pressing wheel is flush with the punching position of the first punching mechanism.

[0016] Furthermore, the automatic steel strip feeding mechanism also includes an equipment base and an equipment transfer mechanism, the equipment transfer mechanism includes a transfer drive assembly, a guide rail and a transfer platform, wherein the guide rail is installed on the top surface of the equipment base, the transfer platform can be slidably installed on the guide rail, the transfer drive assembly is installed on the equipment base and the power end is connected to the transfer platform, the transfer drive assembly can push the transfer platform to slide along the guide rail, and the steel strip unloading mechanism, the first punching mechanism, the steel strip cutting mechanism and the second punching mechanism are all installed on the top surface of the transfer platform.

[0017] The present invention provides an automatic bundling and welding device for fuel cell steel strips. The fuel cells are stacked on a stacking tool. After the stacking is completed, the steel strip automatic feeding device prepares and cuts the finished steel strips. After the steel strips are prepared, they are transported to the steel strip installation position of the press-fitting bundling welding device. After the steel strips required for the product are transported, the lifting platform of the press-fitting bundling welding device performs pressing. After pressing, the steel strip bending mechanism bends the steel tie. After the bending is completed, the steel strip tensioning mechanism tensions the steel strip. The laser welding mechanism welds the tensioned steel strip, and all steel strip welding is completed in sequence.

[0018] The fuel cell steel strip automatic bundling welding equipment of the present invention solves the installation convenience problem in the automatic feeding process of the fuel cell strap, improves the assembly accuracy of the fuel cell strap, and thus improves the product quality rate; the structure is simple, the operation is convenient, the labor intensity is reduced, and the production efficiency is improved; the overall structure is clean and pollution-free, and the environment is effectively protected. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of an automatic bundling and welding device for fuel cell steel strips of the present invention;

[0020] Figure 2 It is a schematic diagram of the mechanism of the automatic steel strip feeding device of the present invention;

[0021] Figure 3 It is a schematic diagram of the back side of the automatic steel strip feeding device of the present invention;

[0022] Figure 4 It is a front schematic diagram of the automatic steel strip feeding device of the present invention;

[0023] Figure 5 It is a structural schematic diagram of the press-fit binding welding device of the present invention;

[0024] Figure 6 for Figure 5 A partial enlarged view of the middle part;

[0025] Figure 7 It is a structural schematic diagram of the steel belt tensioning mechanism of the present invention;

[0026] Figure 8 for Figure 7 A partial enlarged view of point A in the middle.

[0027] 1. Automatic steel strip feeding device; 11. Steel strip unloading mechanism; 111. Structural plate; 112. Unloading motor; 113. Unloading reel; 114. Guide and pressing wheel; 12. First punching mechanism; 13. Steel strip cutting mechanism; 14. Second punching mechanism; 151. Transfer drive assembly; 152. Guide rail; 153. Transfer platform; 16. Equipment base;

[0028] 2. Press-fitting binding welding device; 210, first platform; 220, second platform; 230, lifting platform driving mechanism; 240, first guide column; 250, lifting platform; 251, guide hole; 260, welding mechanism displacement assembly; 270, laser welding mechanism; 280, second guide column; 290, steel belt bending mechanism; 291, hinge seat; 292, cylinder; 293, connecting rod; 294, end bearing seat; 295, rotating shaft; 296, bending pressure head;

[0029] 3. Steel belt tensioning mechanism; 320. Tensioning drive assembly; 331. Latch guide; 3311. Guide hole; 332. Latch structure; 3321. Latch head; 340. Latch drive assembly; 350. Mounting plate. DETAILED DESCRIPTION

[0030] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0031] like Figure 1 As shown, a fuel cell steel strip automatic bundling welding device of the present invention comprises a steel strip automatic feeding device 1 and a press-fit bundling welding device 2;

[0032] like Figure 2-4 As shown, the automatic steel strip feeding device 1 may include a steel strip unloading mechanism 11, a first punching mechanism 12, a steel strip cutting mechanism 13 and a second punching mechanism 14 which are arranged in sequence, wherein the steel strip unloading mechanism 11 includes a structural plate 111, a unloading motor 112, a unloading disk 113 and a guide pressing wheel 114, the structural plate 111 is vertically arranged, the unloading motor 112 is installed on the back of the structural plate 111, the power end of the unloading motor 112 passes through the structural plate 111 and extends to the front of the structural plate 111, the axis of the unloading disk 113 is installed on the power of the unloading motor 112, and the steel strip is wound on the unloading disk 113; the first punching mechanism 12 and the second punching mechanism 14 have punching positions, the steel strip cutting mechanism 13 has a cutting position, and the punching position of the first punching mechanism 12, the punching position of the second punching mechanism 14, and the cutting position of the steel strip cutting mechanism 13 are on the same horizontal line.

[0033] The feeding mechanism places the steel strip through the steel strip unloading mechanism 11. After the steel strip travels a predetermined distance, the first punching mechanism 12 and the second punching mechanism 14 punch process holes in the middle of the steel strip. After the steel strip travels to another predetermined position, the steel strip cutting mechanism 13 is activated, the punching die works, and the steel strip is cut, completing a single steel strip preparation and feeding action.

[0034] The structural plate 111 is also provided with a guide pressing wheel 114, which is located between the steel strip unloading mechanism 11 and the first punching mechanism 12, and the pressing surface of the guide pressing wheel 114 is flush with the punching position of the first punching mechanism 12. Since the steel strip is wound on the unwinding reel 113, the height of the steel strip output by the unwinding reel 113 changes after the unwinding reel 113 continuously unwinds the strip, so the guide pressing wheel 114 is used to adjust the height of the steel strip so that the height of the steel strip remains the same when it enters the first counter-punching mechanism.

[0035] The automatic feeding mechanism of the fuel cell steel strip can also include an equipment base 16 and an equipment transfer mechanism, the equipment transfer mechanism includes a transfer drive assembly 151, a guide rail 152 and a transfer platform 153, wherein the guide rail 152 is installed on the top surface of the equipment base 16, and the transfer platform 153 is slidably installed on the guide rail 152, the transfer drive assembly 151 is installed on the equipment base 16 and the power end is connected to the transfer platform 153, the transfer drive assembly 151 can push the transfer platform 153 to slide along the guide rail 152, and the steel strip unloading mechanism 11, the first punching mechanism 12, the steel strip cutting mechanism 13 and the second punching mechanism 14 are all installed on the top surface of the transfer platform 153.

[0036] The feeding mechanism also has an equipment transfer mechanism, which can drag the steel strip feeding mechanism 11, the first punching mechanism 12, the steel strip cutting mechanism 13 and the second punching mechanism 14 to move together, and can feed the steel strip to different workstations.

[0037] Preferably, the punching position of the first punching mechanism 12, the punching position of the second punching mechanism 14, and the cutting position of the steel strip cutting mechanism 13 are located in a horizontal direction and the projections of the extension direction of the guide rail 152 on the horizontal plane are perpendicular to each other. The effect is that after the steel strip is loaded at one workstation, the equipment transfer mechanism can be used to align the position where the steel strip is output by the loading mechanism with the next workstation that requires the steel strip.

[0038] There are four guide rails 152, and two guide rails 152 are respectively arranged on both sides of the transfer drive assembly 151. As a preferred embodiment, the unwinding motor 112 is a stepping motor. The transfer drive assembly 151 is a stepping electric cylinder.

[0039] The automatic feeding mechanism of fuel cell steel strips solves the installation convenience problem in the process of automatic feeding of fuel cell steel strips, improves the assembly accuracy of fuel cell steel strips, and thus improves the product quality rate. This mechanism can complete the laying, punching and cutting of fuel cells at one time, and the cut steel strips can be directly fed.

[0040] The specific working process of this feeding mechanism is as follows:

[0041] Fuel cell steel strip automatic feeding mechanism, the operator places the steel strip coil on the steel strip unwinding mechanism 11 and locks it, the unwinding motor 112 drives the unwinding disk 113 to rotate to realize the steel strip unwinding, when the steel strip reaches position one, the first punching mechanism 12 is actuated, the punching die works, and process holes are formed, when the steel strip reaches position two, the second punching mechanism 14 is actuated, the punching die works, and process holes are formed, when the steel strip reaches position three, the steel strip cutting mechanism 13 is actuated, the punching die works, and the steel strip is cut, completing a single steel strip preparation and feeding action, the equipment transfer mechanism is actuated to transfer to the next steel strip loading position, and the steel strip is prepared for loading, and the steel strip is prepared and fed multiple times according to the quantity of steel strips required by the product, completing the steel strip feeding required by the product.

[0042] like Figure 5 and 6 As shown, the press-fit binding welding device may include a first platform 210, a second platform 220, a lifting platform driving mechanism 230, a first guide column 240, a lifting platform 250, a welding mechanism displacement assembly 260, a laser welding mechanism 270, a steel belt bending mechanism 290 and a steel belt tensioning mechanism 3, wherein there are multiple first guide columns 240, and the lower end of the first guide column 240 is fixed to the top surface of the first platform 210, the top of the first guide column 240 is fixedly connected to the bottom surface of the second platform 220, and the multiple first guide columns 240 are parallel to each other, the lifting platform 250 is located between the first platform 210 and the second platform 220, and the lifting platform 250 can be installed on the first guide column 240 and can slide vertically along the first guide column 240, and the lifting platform driving mechanism 230 is installed between the lifting platform 250 and the second platform 220 The power end of the lifting platform driving mechanism 230 is connected to the lifting platform 250 to drive the lifting platform 250 to move vertically. The top surface of the lifting platform 250 is provided with a welding mechanism displacement assembly 260. The laser welding mechanism 270 is installed at the power end of the welding mechanism displacement assembly 260. The middle part of the lifting platform 250 is hollowed out. The middle part of the top surface of the first platform 210 is a fuel cell placement position. The welding mechanism displacement assembly 260 drives the laser welding mechanism 270 to move, and passes through the hollow part of the lifting platform 250 to press-fit and weld the fuel cell at the fuel cell placement position. There are two groups of steel belt bending mechanisms 290, and the two groups of steel belt bending mechanisms 290 are respectively arranged on the top surface of the first platform 210. The steel belt bending mechanisms 290 are used to bend the steel belts on opposite sides of the fuel cell placement position and bundle the fuel cells; the steel belt tensioning mechanism 3 is used to tension the bent steel belts on both sides.

[0043] The device binds the steel strip to the side of the fuel cell through the action of the steel strip bending mechanism 290, presses the steel strip to the top of the fuel cell through the downward action of the lifting platform 250, and drives the laser welding mechanism 270 to move downward and translate and perform multiple continuous actions through the welding mechanism displacement assembly 260. The laser welding mechanism 270 can complete the pressing and welding work on the joint of the steel strip, thereby integrating the two operation steps into a dedicated device. The above work does not need to be completed manually for pressing and welding, thereby improving the quality rate of the product.

[0044] In this embodiment, the first platform 210 , the second platform 220 and the lifting platform 250 are all rectangular, there are four first guide columns 240 , and the four first guide columns 240 are respectively connected to the corners of the first platform 210 , the second platform 220 and the lifting platform 250 .

[0045] There are two sets of lifting platform driving mechanisms 230, and the two sets of lifting platform driving mechanisms 230 are respectively installed on both sides of the second platform 220 and the lifting platform 250 in the width direction, so that the driving force on the left and right sides of the lifting platform 250 can be balanced to prevent the lifting platform 250 from getting stuck on the first guide column 240.

[0046] The welding mechanism displacement assembly 260 is a three-dimensional numerical control workbench, and the welding mechanism displacement assembly 260 can drive the laser welding mechanism 270 to move in a three-dimensional space, so as to facilitate the welding of the steel strip head and the switching between multiple steel strip head welding positions.

[0047] The top surface of the first platform 210 also has a second guide column 280 vertically arranged, and the lifting platform 250 has a guide hole 251 corresponding to the second guide column 280 . The second guide column 280 and the guide hole 251 cooperate to complete the accurate guidance of the lifting platform 250 .

[0048] The steel belt bending mechanism 290 includes an articulated seat 291, a cylinder 292, a connecting rod 293, an end bearing seat 294, a rotating shaft 295 and a bending pressure head 296. A fuel cell platform is provided on the top surface of the first platform 210, and at least two end bearing seats 294 are provided on the side of the fuel cell platform. The rotating shaft 295 is rotatably mounted on the end bearing seat 294 through a bearing, and the bending pressure head 296 is fixedly connected to the rotating shaft 295, and one end of the rotating shaft 295 extends out of the end bearing seat 294; the articulated seat 291 is installed on the top surface of the first platform 210, the tail of the cylinder 292 is hinged on the articulated seat 291, the extended end of the cylinder 292 is hinged to the first end of the connecting rod 293, and the second end of the connecting rod 293 is fixedly connected to the rotating shaft 295. The extension and retraction of the cylinder 292 can drive the bending pressure head 296 to rotate through the connecting rod 293 and the rotating shaft 295. In this embodiment, there are multiple bending press heads 296, and a middle bearing seat for supporting the rotation of the rotating shaft 295 is provided between two adjacent bending press heads 296.

[0049] Specifically, the working principle of this welding structure is as follows:

[0050] The transfer platform 153 slides along the guide rail 152, and sequentially places the prepared steel strips in the prefabricated grooves of the fuel cell platform. The main body of the fuel cell is placed on the fuel cell platform. At this time, the main body of the fuel cell is pressed by the steel strips. This fuel cell uses five steel strips. The steel strip bending mechanism 290 starts to work, specifically: the cylinder 292 is pushed out, and the extended end of the cylinder 292 drives the rotating shaft 295 to rotate through the connecting rod 293. The rotating shaft 295 starts to rotate through the supporting effect of the end bearing seat 294 and the middle bearing seat. The bending pressure head 296 rotates with the rotating shaft 295 along the axis of the rotating shaft 295 as the rotation center, and the bending pressure head 296 flips upward to complete the synchronous bending of the five steel strips. In this embodiment, there are steel strip bending mechanisms 290 on both sides of the length direction of the battery platform, which can complete the bending of the steel strips on both sides of the fuel cell body.

[0051] At this time, the lifting platform driving mechanism 230 drives the lifting platform 250 to descend, and the second guide column 280 is inserted into the guide hole 251 to form precise positioning. During the descent, the lifting platform 250 presses the steel belt to form a bend again, and the laser welding mechanism 270 is driven by the welding mechanism displacement assembly 260 to move continuously. At the same time, the laser welding mechanism 270 welds at the position of the steel belt joint, and finally completes the fuel cell press-fit welding.

[0052] like Figure 7 and 8 As shown, the steel belt tensioning mechanism 3 may include a tensioning drive component 320, a latch drive component 340 and a latch mold, wherein the power end of the latch drive component 340 is connected to the latch mold, and the latch drive component 340 is used to drive the latch part of the latch mold to insert into the tensioning hole of the steel belt. The power end of the tensioning drive component 320 is connected to the latch mold, and after the latch part of the latch mold is inserted into the tensioning hole of the steel belt, the latch mold is pulled to make the steel belt form a tensioned state.

[0053] Preferably, the tensioning drive assembly 320 is an inverted air cylinder or electric cylinder, the tensioning drive assembly 320 is installed on the lifting platform 250, and the power end of the tensioning drive assembly 320 passes through the lifting platform 250 and is connected to the latch mold.

[0054] The latch mold includes a latch guide 331 and a latch structure 332. The latch guide 331 is in the shape of an elongated strip. The protruding end of the tensioning drive assembly 320 is connected to the latch guide 331. The latch guide 331 has a guide hole 3311 opposite to the tensioning hole. The power end of the latch drive assembly 340 is connected to the back of the main body of the latch structure 332. The front of the latch structure 332 has a latch head 3321, which is inserted into the guide hole 3311.

[0055] There are two tensioning drive assemblies 320 , and the extended ends of the two tensioning drive assemblies 320 are respectively connected to the two ends of the length direction of the latch guide 331 .

[0056] The guide hole 3311 is a square hole, the pin head 3321 is a square strip, and the inner corners of the guide hole 3311 are provided with root cleaning grooves so that the outer annular surface of the pin head 3321 fits with the inner side surface of the guide hole 3311.

[0057] Specifically, the tensioning structure has two groups of latch molds, which are respectively installed at the top positions on the opposite sides of the fuel cell. Four tensioning drive assemblies 320 are provided on the lifting platform 250, wherein the protruding ends of two tensioning drive assemblies 320 are connected to the latch guide 331 of one latch mold, and the protruding ends of the other two tensioning drive assemblies 320 are connected to the latch guide 331 of another latch mold, and the four tensioning drive assemblies 320 act synchronously.

[0058] In this embodiment, the latch guide 331 is in the shape of an elongated strip, and five guide holes 3311 are provided in the middle of the latch guide 331. The guide holes 3311 are square holes, and the arrangement spacing of the guide holes 3311 corresponds to the spacing distance of the steel strip. Correspondingly, the latch structure 332 also has five latch heads 3321, and the spacing of the latch heads 3321 in the latch structure 332 corresponds to the spacing of the guide holes 3311. In this embodiment, the latch drive assembly 340 is mounted on the latch guide 331 through the mounting plate 350. The power end of the latch drive assembly 340 is connected to the latch structure 332, and can drive the latch structure 332 to move forward and backward along the extension direction of the guide holes 3311. When the tensioning mechanism is used, first, the latch driving assembly 340 drives the latch structure 332 to move forward, and the latch head 3321 cooperates with the guide hole 3311 so that the latch at the front end of the latch head 3321 enters the tensioning hole of the steel belt. Then, the tensioning driving assembly 320 pulls the latch mold upward to make the steel belt reach a tensioned state.

[0059] The tensioning mechanism solves the problem of steel belt tensioning well, improves the assembly accuracy of the fuel cell, and thus improves the quality rate of the product.

[0060] For matters not mentioned above, the prior art applies.

[0061] Although some specific embodiments of the present invention have been described in detail through examples, those skilled in the art should understand that the above examples are for illustration only and are not intended to limit the scope of the present invention. Those skilled in the art to which the present invention belongs may make various modifications or supplements to the specific embodiments described or replace them in a similar manner, but they will not deviate from the direction of the present invention or exceed the scope defined by the attached claims. Those skilled in the art should understand that any modifications, equivalent substitutions, improvements, etc. made to the above embodiments based on the technical essence of the present invention should be included in the protection scope of the present invention.

Claims

1. A fuel cell steel strip automatic bundling welding device, characterized in that: It includes automatic steel strip feeding device and press-fitting binding welding device; The automatic steel strip feeding device comprises a steel strip unloading mechanism, a first punching mechanism, a steel strip cutting mechanism and a second punching mechanism which are sequentially arranged, wherein the steel strip unloading mechanism comprises a structural plate, a unloading motor, a unloading disk and a guide pressing wheel, the structural plate is vertically arranged, the unloading motor is installed on the back of the structural plate, the power end of the unloading motor passes through the structural plate and extends to the front of the structural plate, the axis of the unloading disk is installed on the power of the unloading motor, and the steel strip is wound on the unloading disk; the first punching mechanism and the second punching mechanism have punching positions, the steel strip cutting mechanism has a cutting position, and the punching position of the first punching mechanism, the punching position of the second punching mechanism, and the cutting position of the steel strip cutting mechanism are on the same horizontal line; The press-fit binding welding device includes a first platform, a second platform, a lifting platform driving mechanism, a first guide column, a lifting platform, a welding mechanism displacement component, a laser welding mechanism, a steel belt bending mechanism and a steel belt tensioning mechanism, wherein there are multiple first guide columns, and the lower end of the first guide column is fixed to the top surface of the first platform, the top end of the first guide column is fixedly connected to the bottom surface of the second platform, and the multiple first guide columns are parallel to each other, the lifting platform is located between the first platform and the second platform, and the lifting platform can be installed on the first guide column and can slide vertically along the first guide column, the lifting platform driving mechanism is installed between the lifting platform and the second platform, and the power end of the lifting platform driving mechanism is connected to the lifting platform. The lowering platform is used to drive the lifting platform to move vertically. The top surface of the lifting platform is provided with a welding mechanism displacement assembly. The laser welding mechanism is installed at the power end of the welding mechanism displacement assembly. The middle part of the lifting platform is hollowed out. The middle part of the top surface of the first platform is a fuel cell placement position. The welding mechanism displacement assembly drives the laser welding mechanism to move and press-fits and welds the fuel cell at the fuel cell placement position through the hollow part of the lifting platform. There are two groups of steel belt bending mechanisms, which are respectively arranged on both sides of the length direction of the top of the first platform. The steel belt bending mechanism is used to bend the steel belt on the opposite sides of the fuel cell placement position and bundle the fuel cell; the steel belt tensioning mechanism is used to tension the bent steel belts on both sides.

2. The fuel cell steel strip automatic bundling welding device according to claim 1, characterized in that: The steel strip bending mechanism includes an articulated seat, a cylinder, a connecting rod, an end bearing seat, a rotating shaft and a bending pressure head. A fuel cell platform is provided on the top surface of the first platform, and at least two end bearing seats are provided on the side of the fuel cell platform. The rotating shaft is rotatably mounted on the end bearing seat through a bearing, and the bending pressure head is fixedly connected to the rotating shaft, and one end of the rotating shaft extends out of the end bearing seat; the articulated seat is mounted on the top surface of the first platform, and the tail of the cylinder is hinged on the articulated seat, and the protruding end of the cylinder is hinged to the first end of the connecting rod, and the second end of the connecting rod is fixedly connected to the rotating shaft, and the cylinder can be extended and retracted to drive the bending pressure head to rotate through the connecting rod and the rotating shaft.

3. The fuel cell steel strip automatic bundling welding device according to claim 2, characterized in that: There are multiple bending pressure heads, and a middle bearing seat for supporting the rotation of the rotating shaft is provided between two adjacent bending pressure heads.

4. The fuel cell steel strip automatic bundling welding device according to claim 1, characterized in that: The first platform, the second platform and the lifting platform are all rectangular, there are four first guide columns, and the four first guide columns are respectively connected to the corners of the first platform, the second platform and the lifting platform; there are two groups of lifting platform driving mechanisms, and the two groups of lifting platform driving mechanisms are respectively installed on both sides of the second platform and the lifting platform in the width direction; the welding mechanism displacement assembly is a three-dimensional CNC workbench; the top surface of the first platform also has a vertically arranged second guide column, and the lifting platform has a guide hole corresponding to the second guide column.

5. A fuel cell steel strip automatic bundling welding device as claimed in any one of claims 1 to 4, characterized in that: The steel belt tensioning mechanism includes a tensioning drive component, a latch drive component and a latch mold, wherein the power end of the latch drive component is connected to the latch mold, and the latch drive component is used to drive the latch part of the latch mold to insert into the tensioning hole of the steel belt. The power end of the tensioning drive component is connected to the latch mold, and after the latch part of the latch mold is inserted into the tensioning hole of the steel belt, the latch mold is lifted to make the steel belt form a tensioned state; the tensioning drive component is installed on a lifting platform, and the power end of the tensioning drive component is connected to the latch mold after passing through the lifting platform.

6. The fuel cell steel strip automatic bundling welding device according to claim 5, characterized in that: The latch mold includes a latch guide and a latch structure. The latch guide is in the shape of an elongated strip. The protruding end of the tensioning drive assembly is connected to the latch guide. The latch guide has a guide hole opposite to the tensioning hole. The power end of the latch drive assembly is connected to the back of the latch structure body. The front of the latch structure has a latch head, which is inserted into the guide hole.

7. The fuel cell steel strip automatic bundling welding device according to claim 5, characterized in that: There are two tensioning drive assemblies, and the protruding ends of the two tensioning drive assemblies are respectively connected to the two ends of the length direction of the latch guide.

8. The fuel cell steel strip automatic bundling welding device according to claim 6, characterized in that: The guide hole is a square hole, the pin head is a square strip, and the inner corners of the guide hole are provided with root cleaning grooves so that the outer ring surface of the pin head fits with the inner side surface of the guide hole.

9. The fuel cell steel strip automatic bundling welding device according to any one of claims 1 to 4, characterized in that: The structural plate is also provided with a guide pressing wheel, which is located between the steel strip unloading mechanism and the first punching mechanism, and the pressing surface of the guide pressing wheel is flush with the punching position of the first punching mechanism.

10. The fuel cell steel strip automatic bundling welding device according to any one of claims 1 to 4, characterized in that: The automatic steel strip feeding mechanism also includes an equipment base and an equipment transfer mechanism, the equipment transfer mechanism includes a transfer drive assembly, a guide rail and a transfer platform, wherein the guide rail is installed on the top surface of the equipment base, the transfer platform is slidably installed on the guide rail, the transfer drive assembly is installed on the equipment base and the power end is connected to the transfer platform, the transfer drive assembly can push the transfer platform to slide along the guide rail, and the steel strip unloading mechanism, the first punching mechanism, the steel strip cutting mechanism and the second punching mechanism are all installed on the top surface of the transfer platform.

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