CN210586575U

CN210586575U - Automatic preparation facilities of L-C shape busbar

Info

Publication number: CN210586575U
Application number: CN201921160435.7U
Authority: CN
Inventors: 郑栋; 徐芳华; 张国良; 李奎; 雷智渊
Original assignee: Hangzhou Confirmware Technology Co ltd
Current assignee: Hangzhou Confirmware Technology Co ltd
Priority date: 2019-07-23
Filing date: 2019-07-23
Publication date: 2020-05-22
Anticipated expiration: 2029-07-23

Abstract

The utility model discloses an automatic preparation facilities of L-C shape busbar. The half-plate type solar battery pack needs to use two bus bars of an L shape and a C shape in the process of welding; existing L-shaped and C-shaped busbars are mostly obtained by manual bending. The utility model discloses a preparation frame, draw material mechanism, buckle installation guide rail, CL type welding rod bending machine and construct, move material mechanism and feed alignment mechanism. The material pulling mechanism comprises a material pulling guide rail, a bus bar rail, a material pulling sliding block, a bidirectional clamping assembly and a material pulling driving assembly. The CL-type welding rod bending mechanism comprises a C-type bending seat, an L-type bending seat, a welding strip aligning assembly and three bending executing pieces. The utility model discloses a move material mechanism, draw material mechanism, CL type welding rod bending mechanism and feed alignment mechanism's cooperation in coordination, can realize the full-automatic serialization production of straight busbar, L shape busbar and C shape busbar. The utility model discloses the damage of insulating layer is little on the butt welding area, and can not produce long distance mill mark.

Description

Automatic preparation facilities of L-C shape busbar

Technical Field

The utility model belongs to the technical field of the busbar preparation, concretely relates to automatic preparation facilities of L-C shape busbar.

Background

In the production process of the solar photovoltaic module, a plurality of groups of battery strings are required to be mutually connected and welded together. In recent years, with the intensive research on solar photovoltaic high-efficiency batteries, a half-chip technology is gradually developed from an initial whole-chip technology. And half one is to divide the whole battery into two and then to weld the two into a battery string. Compared with a whole-chip assembly, the half chip has lower internal loss, improves the output efficiency, reduces a plurality of beneficial factors such as hot spot effect and the like, and is accordingly sought in the industry. Technological advances necessarily lead to changes in the corresponding production technologies.

The half-plate type solar battery pack needs to use two bus bars of an L shape and a C shape in the process of welding; most of the existing L-shaped and C-shaped bus bars are obtained by manual bending; the way of preparing the L-shaped and C-shaped bus bars is inefficient and the quality is not guaranteed.

Disclosure of Invention

An object of the utility model is to provide an L-C shape busbar automatic preparation facilities.

The utility model discloses a preparation frame, draw material mechanism, buckle installation guide rail, CL type welding rod bending machine and construct, move material mechanism and feed alignment mechanism. The total number of the feeding straightening mechanisms is two. Two feeding straightening mechanisms are respectively arranged at two ends of the preparation frame. The feeding straightening mechanism comprises a feeding roller, a feeding tension wheel, a bus bar straightening unit and a bus bar cutting unit. The feed rolls are supported on a preparation rack. A plurality of feed tension pulleys are supported on the preparation frame. The bus bar straightening unit comprises a straightening frame, a guide wheel, a horizontal straightening assembly, a vertical straightening assembly and a bus bar cutting unit. The straightening frame is fixed on the preparation frame. The guide wheel is supported on the straightening frame. The number of the horizontal alignment components is two. Two horizontal alignment subassemblies interval settings. The vertical straightening assembly is positioned between the two horizontal straightening assemblies. The busbar cuts off the unit and installs in vertical alignment subassembly, one side that the leading wheel was kept away from to horizontal alignment subassembly.

The material pulling mechanism comprises a material pulling guide rail, a bus bar track, a material pulling sliding block, a bidirectional clamping assembly and a material pulling driving assembly. The bus bar track and the material pulling guide rail are both fixed on the preparation frame. The top surface of the bus bar track is provided with a first bus bar sliding groove and a second bus bar sliding groove which are arranged side by side. The opposite ends of the first bus bar sliding groove and the second bus bar sliding groove are respectively aligned with the feeding output ports of the two feeding straightening mechanisms on the second bus bar preparation module. The material pulling slide block and the material pulling guide rail form a sliding pair. The material pulling slide block is driven by a material pulling driving component. The bidirectional clamping assembly is arranged on the material pulling sliding block. Two ends of the bidirectional clamping component are respectively provided with a bus bar clamping claw; two bus bar clamping claws on the bidirectional clamping assembly face to the feeding output port positions of the two feeding straightening mechanisms on the second bus bar preparation module and are respectively positioned right above the first bus bar sliding groove and the second bus bar sliding groove.

The CL-type welding rod bending mechanism comprises a C-type bending seat, an L-type bending seat, a welding strip aligning assembly and three bending executing pieces. The C-shaped bending seat and the L-shaped bending seat are both arranged on the preparation frame. The top of the L-shaped bending seat is provided with an L-shaped welding strip placing groove; the top of the C-shaped bending seat is provided with a C-shaped welding strip accommodating groove; the L-shaped welding strip placing groove is aligned with the C-shaped welding strip placing groove. The two ends of the C-shaped bending seat and the end of the L-shaped bending seat close to the C-shaped bending seat are respectively fixed with a bending supporting strip. The three bending executing pieces are respectively arranged at the three bending supporting bars. The bending executing piece comprises a pressing component and a bending component. The pressing assembly comprises a turnover pressing block and a pressing cylinder; the bottom of the turning press block is hinged with the corresponding L-shaped bending seat or C-shaped bending seat; the overturning pressing block is driven by the pressing cylinder; the bending component comprises a hook-shaped bending block and a bending cylinder; the inner end of the hook-shaped bending block is hinged with the corresponding L-shaped bending seat or C-shaped bending seat; the hook-shaped bending block is driven by a bending cylinder.

The material moving mechanism comprises a material moving driving piece, a material moving frame, a material lifting cylinder, a transfer frame and a transfer pneumatic sucker. The material moving frame and the preparation frame form a sliding pair and are driven by a material moving driving part. The four material lifting cylinders are sequentially arranged and fixed on the material moving frame. The piston rods of the four material lifting cylinders are arranged downwards and are respectively fixed with the four transfer frames. The bottoms of the four transfer frames are all fixed with a plurality of transfer pneumatic suckers. The four transfer frames are respectively aligned with the two L-shaped welding strip containing grooves and the two C-shaped welding strip containing grooves.

Preferably, the guide wheel comprises a guide shaft, a first half wheel, a second half wheel, a clamping and fixing ring and a guide spring. The guide shaft is supported on the straightening frame. The first half wheel is in a single-side wheel shape and consists of a wheel rim part and a wheel body part which are integrally formed. The wheel body part is in a circular tube shape. The second half wheel has the same shape as the rim portion of the first half wheel. The first half piece wheel and the second half piece wheel are sleeved on the guide shaft. The inner side surface of the second half piece wheel is provided with a cylindrical cavity. The diameter of the cylindrical cavity is equal to the outer diameter of the body portion of the first half wheel. The side surface of the cylindrical cavity of the second half piece wheel is sleeved on the wheel body part of the first half piece wheel. The guide spring is sleeved on the guide shaft. Two ends of the guide spring are respectively propped against the first half piece wheel and the second half piece wheel. The outer side surfaces of the first half piece wheel and the second half piece wheel are respectively fixed with the two clamping and fixing rings. The two clamping fixing rings and the guide shaft are fixed through set screws respectively.

Preferably, the horizontal straightening assembly comprises a horizontal base, a horizontal sliding seat, a horizontal sliding block, a horizontal adjusting bolt and a horizontal calibrating wheel. The horizontal base is fixed on the straightening frame. The horizontal sliding seat and the horizontal base form a sliding pair parallel to the axial direction of the guide wheel. First waist-shaped holes are formed in the two ends of the horizontal sliding seat. Two first threaded holes are formed in the horizontal base. The two first fixing bolts respectively penetrate through the two first waist-shaped holes and respectively form a screw pair with the two first threaded holes. The horizontal adjusting bolt and the horizontal base form a rotating pair, and form a screw pair with the horizontal sliding seat. The axis of the horizontal adjusting bolt is parallel to the axis of the guide shaft. The horizontal sliding block and the horizontal sliding seat form a sliding pair parallel to the axial direction of the guide wheel. The horizontal sliding block is provided with a second waist-shaped hole. And a second threaded hole is formed in the horizontal sliding seat. The second fixing bolt penetrates through the second waist-shaped hole and forms a screw pair with the second threaded hole respectively. The top of the horizontal sliding seat and the horizontal sliding block are both supported with horizontal calibration wheels. The two horizontal calibration wheels are aligned with each other, and the outer circumferential surface is concave inwards to form a V shape.

Preferably, the vertical alignment assembly comprises a vertical base, an alignment adjusting block, a vertical alignment wheel and a vertical adjusting bolt. The vertical base is fixed on the straightening frame. The alignment adjusting block and the vertical base form a sliding pair which slides along the vertical direction. And a third threaded hole which is vertically arranged is formed in the straightening adjusting block. The vertical adjusting bolt and the vertical base form a revolute pair. The vertical adjusting bolt and the third threaded hole respectively form a screw pair. The outer side surface of the alignment adjusting block is supported with a plurality of vertical alignment wheels which are arranged along the horizontal direction. The vertical base supports a plurality of vertical alignment wheels arranged in a horizontal direction.

Preferably, the bus bar cutting unit includes a guide block, a pressing cylinder, a cutting frame, a cutting cylinder, a cutting knife, and a cutting frame position switching cylinder. The guide block is fixed on the straightening frame. The top of the guide block is provided with a guide groove. The guide slot is aligned with the top edge of the guide wheel. The pressing cylinder is fixed with the straightening frame, and the piston rod faces to the right lower side. A pressure head is fixed on a piston rod of the pressing cylinder. The cutting frame and the straightening frame form a sliding pair which slides along the horizontal direction. The cutting frame is located on one side, away from the bus bar straightening unit, of the pressing cylinder. The cylinder body of cutting off the cylinder is fixed in the outside of cutting off the frame bottom, and the piston rod sets up upwards, and the piston rod of cutting off the sword and cutting off the cylinder is fixed. The cutting edge of the cutting knife faces to the right upper part. And a bus bar channel with a closed top is arranged on the cutting frame. The inlet end of the bus bar passage is aligned with the guide slot on the guide block. The cutting knife is positioned below the outlet end of the bus bar channel; the outlet end of the bus bar channel is the feeding outlet of the feeding straightening mechanism. And a cylinder body and a piston rod of the cutting frame position switching cylinder are respectively fixed with the cutting frame and the straightening frame.

Preferably, the material pulling driving assembly comprises a material pulling belt wheel, a material pulling tension wheel, a transmission belt and a material pulling motor. The two material pulling belt wheels are respectively supported at two ends of the preparation frame; one or more material pulling tension wheels are installed on the preparation frame. The transmission belt bypasses the material pulling tension wheel and the two material pulling belt wheels. The transmission belt is fixed with the material pulling slide block. The material pulling motor is fixed on the preparation frame. An output shaft of the material pulling motor is fixed with one of the material pulling belt wheels.

Preferably, the bidirectional clamping assembly comprises a clamping mounting plate, a clamping cylinder, a fixed clamping jaw, a turnover clamping jaw and a connecting rod. The clamping cylinder is a double-rod cylinder. The clamping mounting plate is fixed on the material pulling slide block. The clamping cylinder is fixed on the clamping mounting plate. The two fixed clamping jaws are respectively fixed with the two sides of the clamping mounting plate. One end of each connecting rod is hinged with a piston rod of the clamping cylinder, and the other end of each connecting rod is hinged with the inner ends of the two overturning clamping jaws; the middle parts of the two overturning clamping jaws are respectively hinged with the middle parts of the two fixed clamping jaws. The two overturning clamping jaws correspond to the two fixed clamping jaws in position respectively to form two bus bar clamping jaws.

Preferably, the C-shaped bending seat comprises two single-side bending seats. The opposite ends of the two unilateral bending seats are respectively provided with a splicing block; the two splicing blocks are spliced in a butt joint mode. The two splicing blocks are respectively provided with a waist-shaped hole and a round hole which correspond to each other in position. The waist-shaped holes and the round holes on the two splicing blocks are connected through bolts and nuts.

Preferably, the pressing assembly further comprises a pressing push-out block; the pressing air cylinder is fixed on the corresponding L-shaped bending seat or C-shaped bending seat, and the piston rod is fixed with a pressing push-out block; the top of the push-out block is provided with a pin shaft; the turning pressing block is provided with a turning chute; the pin shaft penetrates through the overturning chute; the bending component also comprises a bending connecting rod; the bending cylinder is fixed with the corresponding L-shaped bending seat or C-shaped bending seat; two ends of the bending connecting rod are respectively hinged with a piston rod of the bending cylinder and the middle part of the hook-shaped bending block; the inner side of the hook-shaped bending block is provided with a right-angle bending surface.

Preferably, the material moving driving part comprises a driving shaft, a material moving motor and two driving shafts. The driving shaft is supported on the preparation frame and is driven by the material moving motor. The driving shaft comprises a driving material moving belt wheel, a driven material moving belt wheel and a material moving belt. The driving material moving belt wheel is fixed on the driving shaft. The driven material moving belt wheel is supported on the preparation frame. The driving material moving belt wheel is connected with the driven material moving belt wheel through a material moving belt. The two material moving belts and the two material moving sliding blocks respectively form a sliding pair.

The utility model has the advantages that:

1. the utility model discloses a move material mechanism, draw material mechanism, CL type welding rod bending mechanism and feed alignment mechanism's cooperation in coordination, can realize the full-automatic serialization production of straight busbar, L shape busbar and C shape busbar.

2. The utility model discloses buckle to welding the area and realize through rotatory extruded mode, compare in prior art the push block direct impact and force the form that the area warp of welding, the utility model discloses the damage of insulating layer is little on the welding area, and can not produce long distance grinding crack.

3. The utility model discloses a set up two-way centre gripping subassembly, two busbar spouts and feed alignment mechanism's mode, invalid stroke when having avoided two-way centre gripping subassembly positive and negative direction to slide when not influencing L shape busbar, C shape busbar preparation, prepare out straight busbar in step, and straight busbar also is the busbar type that must use when half group battery welds, the utility model discloses high efficiency has.

Drawings

Fig. 1 is an overall top view schematic diagram of the present invention;

fig. 2 is a schematic structural view of the concealed material moving mechanism of the present invention;

FIG. 3 is a schematic structural view of a feed straightening mechanism of the present invention;

fig. 4 is a schematic structural diagram of a bus bar straightening unit according to the present invention;

FIG. 5 is a schematic structural view of a guide wheel of the present invention;

fig. 6 is a schematic view of the combination of the horizontal straightening assembly and the vertical straightening assembly of the present invention;

fig. 7 is a partially enlarged view of portion i of fig. 3 (showing the bus bar severing assembly configuration);

fig. 8 is a schematic structural view of the concealed material moving mechanism and the feeding straightening mechanism of the present invention;

FIG. 9 is an enlarged view of a portion II of FIG. 8 (showing the structure of the clamping assembly);

FIG. 10 is a schematic structural view of a CL type welding rod bending machine of the present invention;

FIG. 11 is a schematic structural view of a bending actuator according to the present invention;

fig. 12 is a schematic structural diagram of the material moving mechanism of the present invention.

Fig. 13 is a schematic view of the arrangement of the L-shaped bus bar and the C-shaped bus bar manufactured in the present invention.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

As shown in fig. 1 and 2, an automatic L-C bus bar manufacturing apparatus includes a manufacturing frame 1, a material pulling mechanism 2, a CL-type solder bar bending mechanism 3, a material moving mechanism 4, a feeding and straightening mechanism 5, and a controller. The number of the feeding straightening mechanisms 5 is two. Two feeding straightening mechanisms 5 are respectively arranged at two ends of the preparation frame 1.

As shown in fig. 1, 2 and 3, the feed straightening mechanism 5 includes a feed roller 51, a feed tension pulley 52, a bus bar straightening unit, and a bus bar cutting unit 57. The supply roll 51 is supported on the preparation stand 1 and wound with a roll of solder strip stock. The plurality of feed tension pulleys 52 are supported on the preparation stand, and the raw material for solder ribbon passes around each feed tension pulley 52 in sequence. The bus bar straightening unit includes a straightening frame 53, a guide wheel 54, a horizontal straightening assembly 55, a vertical straightening assembly 56, and a bus bar cutting unit 57. The alignment stand 53 is fixed on the preparation stand. The guide roller 54 includes a guide shaft 541, a first half roller 542, a second half roller 543, a clamp fixing ring 542, and a guide spring 545. Guide shaft 541 is supported on alignment bracket 53. The first half wheel 542 is a single-side wheel and is formed by integrally forming a rim portion and a wheel body portion. The wheel body part is in a circular tube shape. The shape of the second half wheel 543 is the same as the rim portion shape of the first half wheel 542. The first half wheel 542 and the second half wheel 543 are sleeved on the guide shaft 541. The inner side surface of the second half wheel 543 is provided with a cylindrical cavity. The diameter of the cylindrical cavity is equal to the outer diameter of the body portion of the first half wheel 542. The cylindrical cavity side surface of the second half wheel 543 is sleeved on the wheel body part of the first half wheel 542. The guide spring 545 is fitted over the guide shaft 541. Both ends of the guide spring 545 abut against the first half wheel 542 and the second half wheel 543, respectively. The outer side surfaces of the first half piece wheel 542 and the second half piece wheel 543 are fixed with the two clamping fixing rings 542 respectively. The two clamp fixing rings 542 and the guide shaft 541 are fixed to each other by set screws. By adjusting the degree of the wheel body part of the first half wheel 542 extending into the second half wheel 543, the distance between the wheel edge part of the first half wheel 542 and the second half wheel 543 can be adjusted, so that the guide wheel 54 can be matched with bus bars of different sizes.

As shown in fig. 2, 3, 4, 5, and 6, horizontal alignment assembly 55 includes a horizontal base 551, a horizontal slide block 552, a horizontal slide block 553, a horizontal adjustment bolt 554, and a horizontal alignment wheel 555. The horizontal base 551 is fixed to the straightening frame 53. The horizontal sliding base 552 and the horizontal base 551 constitute a sliding pair parallel to the axial direction of the guide wheel 54. First waist-shaped holes are formed in two ends of the horizontal sliding seat 552. Two first threaded holes are formed in the horizontal base 551. The two first fixing bolts respectively penetrate through the two first waist-shaped holes and respectively form a screw pair with the two first threaded holes. The horizontal adjustment bolt 554 forms a rotation pair with the horizontal base 551 and a screw pair with the horizontal sliding seat 552. The axis of the horizontal adjustment bolt 554 is parallel to the axis of the guide shaft 541. The position of the horizontal sliding seat 552 can be adjusted by loosening the two first fixing bolts and then rotating the horizontal adjusting bolt 554. The horizontal slider 553 and the horizontal sliding shoe 552 constitute a sliding pair parallel to the axial direction of the guide wheel 54. The horizontal slider 553 has a second kidney-shaped hole. The horizontal sliding seat 552 has a second threaded hole. The second fixing bolt penetrates through the first waist-shaped hole and forms a screw pair with the second threaded hole respectively. After the second fixing bolt is loosened, the relative position of the horizontal slider 553 and the horizontal sliding block 552 can be adjusted. Horizontal alignment wheels 555 are supported on the top of the horizontal slide block 552 and the horizontal slide block 553. The two leveling wheels 555 are aligned with each other and the outer circumferential surface is concave in a V shape (i.e., the leveling wheels 555 are V-shaped guide wheels 54). The plane of symmetry of the horizontal alignment wheel 555 is aligned with the top edge of the wheel portion in the guide wheel 54.

There are two horizontal alignment assemblies 55. Two horizontal alignment assemblies 55 are spaced apart. The guide wheel 54 and the two horizontal straightening assemblies 55 are sequentially arranged to form three-point positioning, so that the bus bar welding strip is horizontally straightened.

Vertical alignment assembly 56 is located between two horizontal alignment assemblies 55 and includes a vertical base 561, an alignment adjustment block 562, a vertical alignment wheel 563, and a vertical adjustment bolt. The vertical base 561 is fixed to the straightening frame 53. The alignment adjustment block 562 and the vertical base 561 constitute a sliding pair that slides in the vertical direction. A third threaded hole which is vertically arranged is formed in the alignment adjusting block 562. The vertical adjusting bolt and an adjusting hole formed on the vertical base 561 form a rotating pair. The vertical adjusting bolt and the third threaded hole respectively form a screw pair. The position of the alignment adjustment block 562 can be adjusted by rotating the vertical adjustment bolt, respectively, to adjust the alignment effect. A plurality of vertical alignment wheels 563 are supported on the outer side of alignment adjustment block 562 in a horizontal arrangement. A plurality of vertical aligning wheels 563 are supported on the vertical base 561 in a horizontal direction. Vertical alignment wheel 563 on vertical base 561 is located below vertical alignment wheel 563 on alignment adjustment block 562, and vertical alignment wheel 563 on alignment adjustment block 562 is staggered from vertical alignment wheel 563 on vertical base 561.

As shown in fig. 3 and 7, the bus bar cutting unit 57 includes a guide block 571, a pressing cylinder 572, a cutting frame 573, a cutting cylinder 574, a cutting blade 575, and a cutting frame position switching cylinder 576. The guide block 571 is fixed to the straightening frame 53. The top of the guide block 571 is provided with a guide groove. The guide slot is aligned with the top edge of the guide wheel 54. Hold-down cylinder 572 is fixed with alignment frame 53 and the piston rod is facing directly below. A pressure head is fixed on a piston rod of the pressing cylinder 572. Cutting frame 573 and straightening frame 53 form a sliding pair capable of sliding along the horizontal direction. The cut-off 573 is located on a side of the pressing cylinder 572 away from the busbar straightening unit. The cylinder body of the cutting cylinder 574 is fixed to the outer side of the bottom of the cutting frame 573, the piston rod is arranged upward, and the cutting knife 575 is fixed to the piston rod of the cutting cylinder 574. The cutting edge of the cutting knife 575 faces upward. The cut-off 573 is provided with a bus bar passage with a closed top. The inlet end of the bus bar channel is aligned with the guide groove on the guide block 571. The cut-off knife 575 is located below the outlet end of the bus bar channel; when the cutting cylinder 574 pushes out, the cutting blade cuts the bus bar at the outlet end of the bus bar passage. The outlet end of the bus bar passage is the feeding outlet of the feeding straightening mechanism 5. A cut-off frame position switching cylinder 576 cylinder; both ends (cylinder body and piston rod) of the cutting frame position switching cylinder 576 which slide relatively are fixed to the cutting frame 573 and the straightening frame 53, respectively. When the piston rod of the cutting frame position switching cylinder 576 retracts, the welding strip cutting part is exposed for clamping the bidirectional clamping assembly. When the piston rod of the cutting frame position switching cylinder 576 retracts, the welding strip cutting part is exposed for clamping the bidirectional clamping assembly.

As shown in fig. 8, the drawing mechanism 2 includes a drawing guide rail 22, a bus bar rail 23, a drawing slider 24, a bidirectional clamping assembly 25, and a drawing driving assembly 21. The bus bar track 23 and the material pulling guide rail 22 are both fixed on the preparation frame 1. The top surface of the bus bar rail 23 is provided with a first bus bar sliding groove and a second bus bar sliding groove which are arranged side by side. The opposite ends of the first bus bar chute and the second bus bar chute are respectively aligned with the feeding output ports of the two feeding straightening mechanisms 5 on the second bus bar preparation module 2. The material pulling slide block 24 and the material pulling guide rail 22 form a sliding pair. The material pulling driving assembly 21 comprises a material pulling belt wheel, a material pulling tension wheel, a transmission belt and a material pulling motor. Two material pulling belt wheels are respectively supported at two ends of the preparation frame 1; one or more tensioning wheels for drawing the material are mounted on the preparation stand 1. The transmission belt bypasses the material pulling tension wheel and the two material pulling belt wheels. The transmission belt is fixed with the material pulling slide block 24. The material pulling motor is fixed on the preparation frame 1. An output shaft of the material pulling motor is fixed with one of the material pulling belt wheels.

As shown in fig. 8 and 9, the bi-directional clamping assembly 25 is mounted on the puller slide. The bi-directional clamp assembly 25 includes a clamp mounting plate 251, a clamp cylinder 252, a fixed jaw 253, a flipping jaw 254, and a connecting rod 255. The clamp cylinder 252 is a double out rod cylinder. The clamping mounting plate 251 is fixed on the pulling slider 24. The clamp cylinder 252 is fixed to the clamp mounting plate. Two fixed clamping jaws 253 are fixed to both sides of the clamping mounting plate, respectively. One end of each connecting rod 255 is hinged with the two ends of the piston rod of the clamping cylinder 252, and the other end of each connecting rod is hinged with the inner ends of the two overturning clamping jaws 254; the middle parts of the two overturning clamping jaws 254 are hinged with the middle parts of the two fixed clamping jaws 253 respectively. The two flipping jaws 254 correspond in position to the two fixed jaws 253, respectively, forming two bus bar gripping jaws. The two fixing clamping jaws 253 are respectively located right above the first bus bar sliding groove and the second bus bar sliding groove on the bus bar rail 23, and are lower than the feeding output port of the corresponding feeding straightening mechanism 5. When the clamping cylinder 252 slides, the two overturning clamping jaws can be synchronously driven to rotate reversely; the outer end of one of the turnover clamping jaws moves towards the direction close to the corresponding fixed clamping jaw, and the outer end of the other turnover clamping jaw moves towards the direction of the corresponding fixed clamping jaw. So that the clamping cylinder 252 can drive the two sets of turning clamping jaws 254 and the fixed clamping jaw 253 to respectively clamp the solder strips output by the two feeding straightening mechanisms 5.

As shown in fig. 10 and 11, CL-type bar bending mechanism 3 includes C-type bending base 31, L-type bending base 32, and three bending actuators 33. The top of the L-shaped bending seat 32 is provided with an L-shaped welding strip placing groove; the top of the C-shaped bending seat 31 is provided with a C-shaped welding strip placing groove; the L-shaped welding strip placing groove is aligned with the C-shaped welding strip placing groove. Bending support bars 34 are fixed at both ends of the C-shaped bending seat 31 and at the end of the L-shaped bending seat 32 close to the C-shaped bending seat 31. The top surface of the bent support bar 34 is flush with the bottom surface of the corresponding solder strip seating groove. Three bending actuators 33 are respectively installed at the three bending support bars 34.

The C-shaped bending seat 31 includes two single-side bending seats 311. The opposite ends of the two single-side bending seats 311 are respectively provided with a splicing block 312; the two tiles 312 are butt-spliced. The two splicing blocks 312 are respectively provided with an adjusting waist-shaped hole 313 and a round hole which correspond to each other in position. The adjusting waist-shaped hole 313 and the round hole are connected through a bolt and a nut, so that the preparation of C-shaped welding strips with different lengths is realized. The bottom of the L-shaped bending seat 32 and the bottom of the two single-side bending seats 311 can be detachably fixed on the preparation frame.

As shown in fig. 11, the bending actuator 33 includes a pressing member and a bending member. The pressing assembly includes a pressing cylinder 331, a flipping press block 332, and a pressing push-out block 333. The bottom of the turning press block 332 is hinged with the corresponding single-side bending seat 311 or the L-shaped bending seat 32. The turning track of the pressing part on the turning press block 332 passes through the corresponding bent support strip 34. The pressing cylinder 331 is fixed to the corresponding single-side bending seat 311 or the L-shaped bending seat 32, and the piston rod is fixed with a pressing pushing block 333. The top of the push-out block 333 is provided with a pin. The turning press block 332 is provided with a turning chute. The pin shaft penetrates through the overturning chute. The pushing cylinder 331 pushes out to drive the turning press block 332 to rotate, so that the welding rods on the bent support bars 34 are pressed and loosened.

The bending assembly includes a bending cylinder 334, a bending connecting rod, and a hook-shaped bending block 335. The bending cylinder 334 is fixed to the corresponding single-side bending seat 311 or the L-shaped bending seat 32. The inner end of the hook-shaped bending block 335 is hinged with the corresponding single-side bending seat 311 or the L-shaped bending seat 32. The two ends of the bending connecting rod are respectively hinged with the piston rod of the bending cylinder 334 and the middle part of the hook-shaped bending block 335. The inner side of the hook-shaped bending block 335 is provided with a right-angle bending surface. Under the state that the hook-shaped bending block 335 is turned upwards to the limit position, two side faces of the right-angle bending face are respectively contacted with the bottom face and the outer end face of the corresponding bending support strip 34; thereby cooperating with the turning press block 332 to realize the bending of the welding rod.

There are two CL type electrode bending mechanisms 3. The C-shaped bending seats 31 in the two CL-shaped welding rod bending mechanisms 3 are located between the L-shaped bending seats 32 in the two CL-shaped welding rod bending mechanisms 3. The arrangement sequence conforms to the arrangement sequence of the welding strips at the middle part of the half battery pack.

As shown in fig. 12, the material moving mechanism 4 includes a material moving slide rail, a material moving slide block, a material moving driving member, a material moving rack 41, a material lifting cylinder 42, a transfer rack 43, and a transfer pneumatic suction cup 44. Two material moving slide rails are respectively fixed on two sides of the preparation frame. The two material moving sliding blocks are respectively fixed with two ends of the bottom of the material moving frame 41 and respectively form a sliding pair with the two material moving sliding rails. The material moving driving part comprises a driving shaft, a material moving motor and two driving shafts. The driving shaft is supported on the preparation frame and is driven by the material moving motor. The driving shaft comprises a driving material moving belt wheel, a driven material moving belt wheel and a material moving belt. The driving material moving belt wheel is fixed on the driving shaft. The driven material moving belt wheel is supported on the preparation frame. The driving material moving belt wheel is connected with the driven material moving belt wheel through a material moving belt. The two material moving belts and the two material moving sliding blocks respectively form a sliding pair.

Four material lifting air cylinders 42 are sequentially arranged and fixed on the material moving frame 41. The piston rods of the four material lifting cylinders 42 are arranged downwards and are respectively fixed with the four transfer frames 43. A plurality of transfer pneumatic suction cups 44 are fixed to the bottoms of the four transfer frames 43. The four transfer frames 43 are aligned with the two L-shaped and the two C-shaped solder strip seating grooves, respectively. The material moving mechanism 4 is used for transferring the second bus bar sliding groove to the two L-shaped welding strip placing grooves and the two C-shaped welding strip placing grooves.

The material pulling motor and the material moving motor are both connected with the controller through a motor driver. The material lifting cylinder 42, the pressing cylinder, the cutting frame position switching cylinder, the clamping cylinder, the pressing cylinder and the bending cylinder are all connected with an air source through reversing valves. Each transfer pneumatic suction cup 44 is connected to the vacuum generator through the same on-off valve. The on-off valve and the control interface of each reversing valve are connected with the controller through a relay.

The working principle of the utility model is as follows:

firstly, the material pulling mechanism 2 sequentially pulls out the welding strip from the two feeding straightening mechanisms 5 to the first bus bar sliding groove and the second bus bar sliding groove respectively; three sections of welding strips are pulled out from the first bus bar sliding groove to form three straight bus bars; two long, two short four-section welding strips are pulled out of the second bus bar sliding groove, and the four-section welding strips are respectively aligned with the two C-shaped bending seats 31 and the two L-shaped bending seats 32.

Then, the four transfer frames of the material transfer mechanism 4 are respectively moved to positions right above the four sections of welding strips on the second bus bar sliding groove, and then the four material lifting cylinders are pushed out, so that the transfer pneumatic suckers on the four transfer frames are respectively contacted with the four sections of welding strips on the second bus bar sliding groove; thereafter, all transfer pneumatic chucks suck the corresponding solder strips. The material moving mechanism 4 respectively places the four sections of welding strips on the C-shaped welding strip placement grooves of the two C-shaped bending seats and the L-shaped welding strip placement grooves of the two L-shaped bending seats.

Finally, bending the L-shaped bus bar 01 and the C-shaped bus bar 02: ① shown in FIG. 13 by the following method, wherein the turning pressing blocks in all the bending executing pieces respectively press the corresponding welding strips, ②, the hook-shaped bending blocks in all the bending executing pieces are turned upwards to press the end parts of the welding strips, so that the end parts of one ends of the welding strips on the L-shaped bending seat are turned upwards to obtain the L-shaped bus bar, the end parts of two ends of the welding strips on the C-shaped bending seat are turned upwards to obtain the C-shaped bus bar, and the obtained L-shaped bus bar and the obtained C-shaped bus bar are taken down manually or by an external material taking device.

The process that the material pulling mechanism 2 pulls out the welding strip from the feeding straightening mechanism 5 and cuts off the welding strip is as follows:

(1) the turning clamping jaw and the fixed clamping jaw on the same side of the dragged feeding straightening mechanism 5 are respectively used as a working turning clamping jaw and a working fixed clamping jaw. The clamping cylinder moves forward, so that the outer end of the working overturning clamping jaw overturns upwards and is separated from the outer end of the working fixing clamping jaw. Meanwhile, the cutting frame in the pulled feeding straightening mechanism 5 is retracted by the switching cylinder, and the welding strip at the feeding output port of the feeding straightening mechanism is exposed.

(2) The material pulling motor rotates in the positive direction, the clamping assembly is driven to move towards the pulled feeding straightening mechanism 5 until the welding strip at the feeding output port of the feeding straightening mechanism is positioned between the working overturning clamping jaw and the working fixing clamping jaw.

(3) And the clamping cylinder moves reversely, so that the work overturning clamping jaw and the work fixing clamping jaw clamp the welding strip at the feeding output port of the feeding straightening mechanism.

(4) The material pulling motor rotates reversely to drive the clamping assembly to move away from the pulled feeding straightening mechanism. The cutting frame is pushed out by a position switching cylinder, so that the cutting frame is reset. When the welding strip is pulled out by a preset distance, the material pulling motor stops rotating, the pressing cylinder pushes out the welding strip, and the pressing head presses the welding strip; and pushing out by a cutting cylinder to cut off the welding strip.

The utility model discloses in two-way centre gripping subassembly can realize the centre gripping of two orientations, the cooperation is located the feed aligning gear 5 at preparation frame both ends, the utility model discloses a two-way centre gripping subassembly positive and negative direction slip can be respectively from two feed aligning gear 5 pull out the welding rod; therefore, the utility model discloses do not have invalid stroke, efficiency is higher.

Claims

1. An automatic preparation device for an L-C-shaped bus bar comprises a preparation frame, a material pulling mechanism, a bending installation guide rail, a CL type welding bar bending mechanism, a material moving mechanism and a feeding straightening mechanism; the method is characterized in that: the number of the feeding straightening mechanisms is two; the two feeding straightening mechanisms are respectively arranged at two ends of the preparation frame; the feeding straightening mechanism comprises a feeding roller, a feeding tension wheel, a bus bar straightening unit and a bus bar cutting unit; the feeding roller is supported on the preparation frame; the plurality of feeding tension pulleys are supported on the preparation frame; the bus bar straightening unit comprises a straightening frame, a guide wheel, a horizontal straightening assembly, a vertical straightening assembly and a bus bar cutting unit; the straightening frame is fixed on the preparation frame; the guide wheel is supported on the straightening frame; the number of the horizontal straightening assemblies is two; the two horizontal straightening assemblies are arranged at intervals; the vertical straightening component is positioned between the two horizontal straightening components; the bus bar cutting unit is arranged on one side of the vertical straightening assembly and one side of the horizontal straightening assembly, which are far away from the guide wheel;

the material pulling mechanism comprises a material pulling guide rail, a bus bar track, a material pulling sliding block, a bidirectional clamping assembly and a material pulling driving assembly; the bus bar track and the material pulling guide rail are fixed on the preparation frame; the top surface of the bus bar track is provided with a first bus bar sliding groove and a second bus bar sliding groove which are arranged side by side; the opposite ends of the first bus bar sliding groove and the second bus bar sliding groove are respectively aligned with the feeding output ports of the two feeding straightening mechanisms on the second bus bar preparation module; the material pulling slide block and the material pulling guide rail form a sliding pair; the material pulling slide block is driven by a material pulling driving component; the bidirectional clamping assembly is arranged on the material pulling sliding block; two ends of the bidirectional clamping component are respectively provided with a bus bar clamping claw; two bus bar clamping claws on the bidirectional clamping assembly face to the feeding output ports of the two feeding straightening mechanisms on the second bus bar preparation module and are respectively positioned right above the first bus bar sliding groove and the second bus bar sliding groove;

the CL-type welding rod bending mechanism comprises a C-type bending seat, an L-type bending seat, a welding strip alignment assembly and three bending executing pieces; the C-shaped bending seat and the L-shaped bending seat are both arranged on the preparation frame; the top of the L-shaped bending seat is provided with an L-shaped welding strip placing groove; the top of the C-shaped bending seat is provided with a C-shaped welding strip accommodating groove; the L-shaped welding strip containing groove is aligned with the C-shaped welding strip containing groove; bending support bars are fixed at both ends of the C-shaped bending seat and at the end of the L-shaped bending seat close to the C-shaped bending seat; the three bending executing pieces are respectively arranged at the three bending supporting bars; the bending executing piece comprises a pressing component and a bending component; the pressing assembly comprises a turnover pressing block and a pressing cylinder; the bottom of the turning press block is hinged with the corresponding L-shaped bending seat or C-shaped bending seat; the overturning pressing block is driven by the pressing cylinder; the bending component comprises a hook-shaped bending block and a bending cylinder; the inner end of the hook-shaped bending block is hinged with the corresponding L-shaped bending seat or C-shaped bending seat; the hook-shaped bending block is driven by a bending cylinder;

the material moving mechanism comprises a material moving driving piece, a material moving frame, a material lifting cylinder, a transfer frame and a transfer pneumatic sucker; the material moving frame and the preparation frame form a sliding pair and are driven by a material moving driving part; the four material lifting cylinders are sequentially arranged and fixed on the material moving frame; piston rods of the four material lifting cylinders are arranged downwards and are respectively fixed with the four transfer frames; the bottoms of the four transfer frames are respectively fixed with a plurality of transfer pneumatic suckers; the four transfer frames are respectively aligned with the two L-shaped welding strip containing grooves and the two C-shaped welding strip containing grooves.

2. The automatic L-C bus bar manufacturing apparatus according to claim 1, wherein: the guide wheel comprises a guide shaft, a first half wheel, a second half wheel, a clamping fixing ring and a guide spring; the guide shaft is supported on the straightening frame; the first half wheel is in a single-side wheel shape and consists of a wheel rim part and a wheel body part which are integrally formed; the wheel body part is in a circular tube shape; the shape of the second half wheel is the same as that of the rim part of the first half wheel; the first half piece wheel and the second half piece wheel are sleeved on the guide shaft; the inner side surface of the second half piece wheel is provided with a cylindrical cavity; the diameter of the cylindrical cavity is equal to the outer diameter of the wheel body part of the first half wheel; the side surface of the cylindrical cavity of the second half piece wheel is sleeved on the wheel body part of the first half piece wheel; the guide spring is sleeved on the guide shaft; two ends of the guide spring respectively abut against the first half piece wheel and the second half piece wheel; the outer side surfaces of the first half piece wheel and the second half piece wheel are respectively fixed with the two clamping and fixing rings; the two clamping fixing rings and the guide shaft are fixed through set screws respectively.

3. The automatic L-C bus bar manufacturing apparatus according to claim 1, wherein: the horizontal straightening assembly comprises a horizontal base, a horizontal sliding seat, a horizontal sliding block, a horizontal adjusting bolt and a horizontal calibrating wheel; the horizontal base is fixed on the straightening frame; the horizontal sliding seat and the horizontal base form a sliding pair parallel to the axial direction of the guide wheel; two ends of the horizontal sliding seat are provided with first waist-shaped holes; two first threaded holes are formed in the horizontal base; the two first fixing bolts respectively penetrate through the two first waist-shaped holes and respectively form a screw pair with the two first threaded holes; the horizontal adjusting bolt and the horizontal base form a rotating pair, and form a screw pair with the horizontal sliding seat; the axis of the horizontal adjusting bolt is parallel to the axis of the guide shaft; the horizontal sliding block and the horizontal sliding seat form a sliding pair parallel to the axial direction of the guide wheel; the horizontal sliding block is provided with a second waist-shaped hole; a second threaded hole is formed in the horizontal sliding seat; the second fixing bolt penetrates through the second waist-shaped hole and forms a screw pair with the second threaded hole respectively; horizontal calibration wheels are supported on the top of the horizontal sliding seat and the top of the horizontal sliding block; the two horizontal calibration wheels are aligned with each other, and the outer circumferential surface is concave inwards to form a V shape.

4. The automatic L-C bus bar manufacturing apparatus according to claim 1, wherein: the vertical straightening assembly comprises a vertical base, a straightening adjusting block, a vertical straightening wheel and a vertical adjusting bolt; the vertical base is fixed on the straightening frame; the alignment adjusting block and the vertical base form a sliding pair which slides along the vertical direction; a third threaded hole which is vertically arranged is formed in the alignment adjusting block; the vertical adjusting bolt and the vertical base form a revolute pair; the vertical adjusting bolt and the third threaded hole respectively form a screw pair; a plurality of vertical calibration wheels which are arranged along the horizontal direction are supported on the outer side surface of the alignment adjusting block; the vertical base supports a plurality of vertical alignment wheels arranged in a horizontal direction.

5. The automatic L-C bus bar manufacturing apparatus according to claim 1, wherein: the bus bar cutting unit comprises a guide block, a pressing cylinder, a cutting frame, a cutting cylinder, a cutting knife and a cutting frame position switching cylinder; the guide block is fixed on the straightening frame; the top of the guide block is provided with a guide groove; the guide groove is aligned with the top edge of the guide wheel; the pressing cylinder is fixed with the straightening frame, and the piston rod faces to the right lower part; a pressure head is fixed on a piston rod of the pressing cylinder; the cutting frame and the straightening frame form a sliding pair which slides along the horizontal direction; the cutting frame is positioned on one side of the pressing cylinder, which is far away from the bus bar straightening unit; the cylinder body of the cutting cylinder is fixed on the outer side of the bottom of the cutting frame, the piston rod is arranged upwards, and the cutting knife is fixed with the piston rod of the cutting cylinder; the cutting edge of the cutting knife faces to the right upper part; the cutting frame is provided with a bus bar channel with a closed top; the inlet end of the bus bar channel is aligned with the guide groove on the guide block; the cutting knife is positioned below the outlet end of the bus bar channel; the outlet end of the bus bar channel is a feeding output port of the feeding straightening mechanism; and a cylinder body and a piston rod of the cutting frame position switching cylinder are respectively fixed with the cutting frame and the straightening frame.

6. The automatic L-C bus bar manufacturing apparatus according to claim 1, wherein: the material pulling driving assembly comprises a material pulling belt wheel, a material pulling tension wheel, a transmission belt and a material pulling motor; the two material pulling belt wheels are respectively supported at two ends of the preparation frame; one or more material pulling tension wheels are arranged on the preparation frame; the transmission belt bypasses the material pulling tension wheel and the two material pulling belt wheels; the transmission belt is fixed with the material pulling slide block; the material pulling motor is fixed on the preparation frame; an output shaft of the material pulling motor is fixed with one of the material pulling belt wheels.

7. The automatic L-C bus bar manufacturing apparatus according to claim 1, wherein: the bidirectional clamping assembly comprises a clamping mounting plate, a clamping cylinder, a fixed clamping jaw, a turnover clamping jaw and a connecting rod; the clamping cylinder is a double-rod cylinder; the clamping mounting plate is fixed on the pulling slide block; the clamping cylinder is fixed on the clamping mounting plate; the two fixed clamping jaws are respectively fixed with the two sides of the clamping mounting plate; one end of each connecting rod is hinged with a piston rod of the clamping cylinder, and the other end of each connecting rod is hinged with the inner ends of the two overturning clamping jaws; the middle parts of the two overturning clamping jaws are hinged with the middle parts of the two fixed clamping jaws respectively; the two overturning clamping jaws correspond to the two fixed clamping jaws in position respectively to form two bus bar clamping jaws.

8. The automatic L-C bus bar manufacturing apparatus according to claim 1, wherein: the C-shaped bending seat comprises two single-side bending seats; the opposite ends of the two unilateral bending seats are respectively provided with a splicing block; the two splicing blocks are spliced in a butt joint manner; the two splicing blocks are respectively provided with a waist-shaped hole and a round hole which correspond to each other in position; the waist-shaped holes and the round holes on the two splicing blocks are connected through bolts and nuts.

9. The automatic L-C bus bar manufacturing apparatus according to claim 1, wherein: the pressing assembly further comprises a pressing push-out block; the pressing air cylinder is fixed on the corresponding L-shaped bending seat or C-shaped bending seat, and the piston rod is fixed with a pressing push-out block; the top of the push-out block is provided with a pin shaft; the turning pressing block is provided with a turning chute; the pin shaft penetrates through the overturning chute; the bending component also comprises a bending connecting rod; the bending cylinder is fixed with the corresponding L-shaped bending seat or C-shaped bending seat; two ends of the bending connecting rod are respectively hinged with a piston rod of the bending cylinder and the middle part of the hook-shaped bending block; the inner side of the hook-shaped bending block is provided with a right-angle bending surface.

10. The automatic L-C bus bar manufacturing apparatus according to claim 1, wherein: the material moving driving part comprises a driving shaft, a material moving motor and two driving shafts; the driving shaft is supported on the preparation frame and is driven by a material moving motor; the driving shaft comprises a driving material moving belt wheel, a driven material moving belt wheel and a material moving belt; the driving material moving belt wheel is fixed on the driving shaft; the driven material moving belt wheel is supported on the preparation frame; the driving material moving belt wheel is connected with the driven material moving belt wheel through a material moving belt; the two material moving belts and the two material moving sliding blocks respectively form a sliding pair.