CN110449908B - Automatic preparation device and preparation method for L-shaped upwarping bus bar - Google Patents
Automatic preparation device and preparation method for L-shaped upwarping bus bar Download PDFInfo
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- CN110449908B CN110449908B CN201910665837.0A CN201910665837A CN110449908B CN 110449908 B CN110449908 B CN 110449908B CN 201910665837 A CN201910665837 A CN 201910665837A CN 110449908 B CN110449908 B CN 110449908B
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- 238000002360 preparation method Methods 0.000 title claims abstract description 90
- 239000000463 material Substances 0.000 claims abstract description 185
- 238000003466 welding Methods 0.000 claims abstract description 168
- 230000007306 turnover Effects 0.000 claims abstract description 122
- 230000007246 mechanism Effects 0.000 claims abstract description 91
- 238000005520 cutting process Methods 0.000 claims abstract description 64
- 238000003825 pressing Methods 0.000 claims description 40
- 230000000712 assembly Effects 0.000 claims description 30
- 238000000429 assembly Methods 0.000 claims description 30
- 230000005540 biological transmission Effects 0.000 claims description 15
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- 229910000679 solder Inorganic materials 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
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Abstract
The invention discloses an automatic preparation device and a preparation method of an L-shaped upwarping bus bar. The existing L-shaped upwarping bus bar preparation device has the problems of low automation degree, unstable forming or easy insufficient welding of a binding surface. The invention discloses an automatic preparation device for an L-shaped upwarping bus bar, which comprises a preparation frame, a material pulling mechanism, a material moving mechanism, an L-shaped turnover upwarping mechanism and a feeding straightening mechanism. The feeding straightening mechanism comprises a feeding roller, a feeding tension wheel, a bus bar straightening unit and a bus bar cutting unit. The material pulling mechanism comprises a material pulling guide rail, a bus bar rail, a material pulling sliding block, a clamping assembly and a material pulling driving assembly. The L-shaped turnover mechanism comprises a bus bar upwarping pressure welding unit and two L-shaped turnover units. The bus bar upwarping pressure welding unit comprises a fixed seat, a first electrode block, a second electrode block and a single-side upwarping welding assembly. According to the invention, through the cooperative cooperation of all the mechanisms, the full-automatic continuous production of the L-shaped upward-warping bus bar can be realized.
Description
Technical Field
The invention belongs to the technical field of solar cells, and particularly relates to an automatic preparation device and a preparation method of an L-shaped upwarping bus bar.
Background
In the production process of the whole solar photovoltaic module, a plurality of groups of battery strings are required to be mutually connected and welded together. In the process of welding, a bus bar which is L-shaped and has a right-angle edge which is upwards warped is needed; at present, the manufacturing devices of the L-shaped upwarping bus bar are different, and two welding strips are firstly welded into a right-angle shape and then bent into an upwarping shape in a manual mode; or bending the straight strip solder strip into a right angle shape, and welding the binding surfaces together by electric iron and other modes. Although these methods can satisfy the final use requirements, they have problems of low automation degree, unstable molding, easy cold joint of the bonded surfaces, and insufficient pulling strength. None of these are suitable for industrial automated mass production applications.
Disclosure of Invention
The invention aims to provide an automatic preparation device of an L-shaped upwarping bus bar and a preparation method of the L-shaped upwarping bus bar.
The invention discloses an automatic preparation device for an L-shaped upwarping bus bar, which comprises a preparation frame, a material pulling mechanism, a material moving mechanism, an L-shaped turnover upwarping mechanism and a feeding straightening mechanism. The feeding straightening mechanism is arranged at one end 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 comprises a guide shaft, a first half wheel, a second half wheel 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 first half piece wheel and the second half piece wheel are both detachably fixed with the guide shaft. 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 horizontal straightening assembly and the vertical straightening assembly are located between the guide wheel and the bus bar cutting unit.
The busbar cut-off unit comprises a guide block, a pressing cylinder, a cut-off frame, a cut-off cylinder, a cut-off cutter and a cut-off 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 cylinder body of the pressing cylinder is fixed with the straightening frame, and the piston rod faces the guide groove. A pressure head is fixed on a piston rod of the pressing cylinder. The cutting frame and the straightening frame form a sliding pair. The cutting frame is located on one side, away from the bus bar straightening unit, of the pressing cylinder. The cylinder body of the cutting cylinder is fixed on the cutting frame. The cutting-off knife is fixed with a piston rod of the cutting-off cylinder. 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 located at the outlet end of the bus bar channel. 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.
The material pulling mechanism comprises a material pulling guide rail, a bus bar track, a material pulling sliding block, a 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 bus bar sliding groove. One end of the bus bar sliding groove corresponds to the position of a feeding output port of the feeding straightening mechanism. 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 clamping assembly is arranged on the material pulling sliding block. The bus bar clamping claw on the clamping component faces to the position of the feeding output port of the corresponding feeding straightening mechanism. The bus bar clamping claw on the clamping assembly is positioned right above the bus bar sliding groove.
The L-shaped turnover mechanism comprises a bus bar turnover pressure welding unit and two L-shaped turnover units. Two turnover notches are arranged on the bus bar track at intervals. The two L-shaped folding units are respectively arranged at the two folding notches. The L-shaped turnover unit comprises a turnover assembly and a constant pressure assembly. The turnover assembly comprises a turnover rotary knife and a turnover driving piece. The turnover rotary knife consists of a turnover rotary shaft and a knife body which are integrally formed. The turnover rotating shaft is supported on the preparation frame. The cutter body is eccentrically arranged on the end surface of the outer end of the turnover rotating shaft. The cutter body is provided with a turnover surface. The turnover rotary knife is driven by a turnover driving piece. The cutter bodies in the two turnover assemblies respectively extend into the two turnover notches. The constant pressure assembly comprises a turnover pressing block and a constant pressure cylinder. The folding pressing block and the preparation frame form a sliding pair. The cylinder body of the constant pressure cylinder is fixed on the preparation frame, and the piston rod is fixed with the turnover pressing block. The outer end of the top of the turnover pressing block is provided with an inclined plane.
The bus bar upwarping pressure welding unit comprises a fixed seat, a first electrode block, a second electrode block and a single-side upwarping welding assembly. The fixing seat is fixed on the preparation frame. The single-side warping welding assembly comprises a mounting seat, a first pressure welding head, a second pressure welding head, a profiling mold and an upward warping driving piece. The inner side surface of the first pressure welding head is fixed with the fixed seat. The mounting seat is installed on the fixing seat through the upwarping driving piece. The second pressure welding head is fixed on the mounting seat. The second pressure welding head is arranged opposite to the outer side face of the first pressure welding head. The bottom of the profiling is arranged on the mounting seat and is positioned on one side of the second pressure welding head. The number of the single-side tilted welding assemblies is two. Two unilateral perk welding assembly set up side by side. The first pressure welding head is connected with the first electrode block; the second pressure welding head is connected with the second electrode block.
The material moving mechanism comprises a transverse material moving driving piece, a material moving frame, a material moving adjusting driving piece, an upward lifting driving piece, an installation frame and a pneumatic sucker group. The material moving frame and the preparation frame form a sliding pair and are driven by a transverse material moving driving piece. The two mounting racks are respectively installed on the material moving rack through two lifting driving pieces. The bottom of the mounting rack is provided with a pneumatic sucker group. The pneumatic sucker group comprises a plurality of pneumatic suckers which are arranged in sequence. Each pneumatic sucking disc all sets up downwards.
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 first 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 material pulling driving assembly comprises a material pulling belt wheel, a material pulling tension wheel, a first 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 first transmission belt bypasses the material pulling tension wheel and the two material pulling belt wheels. The first 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 clamping assembly comprises a clamping mounting plate, a clamping cylinder, a fixed clamping jaw, a turnover clamping jaw and a connecting rod. The clamping mounting plate is fixed on the material pulling slide block. The clamping cylinder is fixed on the clamping mounting plate. The fixed clamping jaw is fixed on one side of the clamping mounting plate close to the corresponding feeding straightening mechanism. One end of the connecting rod is hinged with a pushing rod of the clamping cylinder, and the other end of the connecting rod is hinged with the inner end of the overturning clamping jaw; the middle part of the overturning clamping jaw is hinged with the middle part of the fixed clamping jaw. The outer end of the overturning clamping jaw corresponds to the outer end of the fixing clamping jaw to form a bus bar clamping jaw.
Preferably, the turnover driving member includes a driving turnover pulley, a driven turnover pulley, and a turnover transmission belt. The driven turnover belt wheel is fixed with the turnover rotating shaft; the driving turnover belt wheel is supported on the preparation frame. The driving turnover belt wheel is connected with the driven turnover belt wheel through a turnover driving belt. The turnover driving motor is fixed on the preparation frame, and the output shaft is fixed with the driving turnover belt wheel. The axis of the turnover rotating shaft is flush with the bottom surface of the bus bar sliding groove of the bus bar preparation module. The axis of the turnover rotating shaft and the length direction of the bus bar track of the bus bar preparation module form an angle of 45 degrees. The axes of the turning rotating shafts in the two turning assemblies form an angle of 90 degrees. The edge of the outer end of the bottom surface of the turnover pressing block is parallel to the axis of the corresponding turnover rotating shaft. The bottom surface of the turnover pressing block is flush with the top surface of the bus bar track in the bus bar preparation module.
Preferably, the welding head mounting seat is provided with an adjusting sliding groove. The bottom of the adjusting chute is provided with a threaded hole. The profiling and the adjusting chute on the welding head mounting seat form a sliding pair. The profiling is provided with a waist-shaped stepped hole. Fastening bolts are arranged in the waist-shaped stepped holes. The screw rod of the fastening bolt and the threaded hole on the adjusting chute form a screw pair. The outer side surface of the profiling is higher than the outer side surface of the second bonding tool. And the top of the side of the explorator close to the second pressure welding head is provided with an arc chamfer. The length direction of the adjusting sliding groove is parallel to the arrangement direction of the profiling and the second pressure welding heads.
Preferably, the transverse material moving driving part comprises a material moving driving shaft, a material moving motor and two first belt transmission assemblies. The material moving driving shaft is supported on the preparation frame and is driven by a material moving motor. The first belt transmission assembly comprises a first driving material moving belt wheel, a first driven material moving belt wheel and a material moving belt. The first driving material moving belt wheel is fixed on the material moving driving shaft. The first driven material moving belt wheel is supported on the preparation frame. The first driving material moving belt wheel is connected with the first driven material moving belt wheel through a material moving belt. Two material moving belts are respectively fixed with two ends of the material moving frame. And a material moving adjusting driving piece is arranged between the upward lifting driving piece and the mounting frame. The material moving adjusting driving part and the lifting driving part adopt electric sliding tables.
The preparation method of the L-shaped upwarping bus bar of the automatic preparation device of the L-shaped upwarping bus bar comprises the following specific steps:
step one, the material pulling mechanism pulls out two sections of welding strips from the material feeding and straightening mechanism to the bus bar sliding groove.
And 1-1, retracting the clamping cylinder to enable the outer end of the overturning clamping jaw to overturn upwards and separate from the outer end of the fixed clamping jaw. Meanwhile, the cutting frame position switching cylinder retracts to expose the welding strip at the feeding output port of the feeding straightening mechanism.
And 1-2, the material pulling motor rotates forwards to drive the clamping assembly to move towards the feeding straightening mechanism until a welding strip at a feeding output port of the feeding straightening mechanism is positioned between the overturning clamping jaw and the fixed clamping jaw.
And 1-3, retracting the clamping cylinder to enable the overturning clamping jaw and the fixed clamping jaw to clamp the welding strip at the feeding output port of the feeding straightening mechanism.
And 1-4, reversing the material pulling motor to drive the clamping assembly to move away from the 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.
And 1-5, continuing to rotate the material pulling motor reversely until the part to be bent of the first section of the welding strip reaches the L-shaped folding unit far away from the feeding straightening mechanism. And then, the clamping cylinder retracts, so that the overturning clamping jaw and the fixed clamping jaw loosen the welding strip.
And 1-6, pulling out and cutting the second section of the welding strip according to the method of the steps 1-2 to 1-4. And then, the material pulling motor continuously rotates reversely until the part to be bent of the second section of the welding strip reaches the L-shaped folding unit close to the feeding straightening mechanism. The clamping cylinder retracts, so that the overturning clamping jaw and the fixed clamping jaw loosen the welding strip.
Step two, turning and folding the welding strip into an L shape
And 2-1, pushing out the constant pressure cylinders of the constant pressure components in the two first L-shaped bending components, so that the two turnover pressing blocks respectively press the two welding strips on the bus bar sliding groove.
And 2-2, the two bending driving pieces respectively drive the two bending rotary cutters to rotate 180 degrees, so that the two welding strips on the bus bar sliding groove are folded into an L shape.
And step three, two pneumatic sucker groups of the material moving mechanism respectively move to positions right above the two L-shaped welding strips on the bus bar sliding groove under the control of the controller, and respectively suck the two L-shaped welding strips through negative pressure. And then, the material moving mechanism respectively places the turning positions of the two sections of welding strips between the first pressure welding head and the second pressure welding head of the two single-side upwarp welding assemblies, and enables the right-angle edge to be bent on the L-shaped welding strip to be aligned and contacted with the profiling.
And step four, the bus bar upwarping pressure welding unit upwarps and welds the L-shaped welding strip.
4-1, the two upward warping driving pieces respectively drive a first pressure welding head and a second pressure welding head of the two single-side warping welding assemblies to clamp the turnover positions of the two welding strips; the right-angle edge of the welding strip contacting the explorator bends and upwarps under the extrusion of the explorator.
4-2, electrifying the first pressure welding head and the second pressure welding head; the first pressure welding head and the second pressure welding head generate heat, and the binding surfaces of the corresponding welding strip turnover positions are welded together to obtain two L-shaped upwarping bus bars.
And 4-3, the two upward warping driving pieces respectively drive the first pressure welding head and the second pressure welding head of the two single-side warping welding assemblies to separate.
And fifthly, separating the two L-shaped upwarping bus bars from the bus bar upwarping pressure welding unit by the material moving mechanism.
The invention has the beneficial effects that:
1. according to the invention, through the cooperative matching of the material moving mechanism, the material pulling mechanism, the L-shaped turnover upwarping mechanism and the feeding straightening mechanism, the full-automatic continuous production of the L-shaped upwarping bus bar can be realized.
2. The automatic turnover welding strip is automatically turned over in a rotary extrusion mode, the damage to the welding strip is small, and the turnover surface is very flat.
3. According to the invention, the profiling, the first bonding tool and the second bonding tool are matched, so that the bending part of the bus bar can be subjected to resistance welding, and meanwhile, the right-angle side of the bus bar is upwarped.
Drawings
FIG. 1 is an overall top schematic view 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 view of the feed straightening mechanism of the present invention;
fig. 4 is a schematic structural view of a bus bar straightening unit according to the present invention;
FIG. 5 is a schematic view of the construction of the guide wheel according to the present invention;
FIG. 6 is a schematic view of the combination of the horizontal alignment assembly and the vertical alignment 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 an enlarged view of a portion II of FIG. 2 (showing the structure of the clamping assembly);
fig. 9 is a partially enlarged view of the portion iii in fig. 2 (showing the structure of the L-shaped folding unit);
FIG. 10 is a schematic structural view of a bus bar upwarp pressure welding unit according to the present invention;
FIG. 11 is a schematic structural view of the material moving mechanism of the present invention;
Detailed Description
The invention is further described below with reference to the accompanying drawings.
The utility model provides a full-automatic, the serialization preparation that L shape upwarps busbar automatic preparation facilities, can realize L shape upwarps busbar. The L-shaped upwarping bus bar is applied to the whole solar cell module.
As shown in fig. 1 and 2, an automatic L-shaped upwarping busbar preparing device includes a preparing rack 1, a material moving mechanism 2, a material pulling mechanism 3, an L-shaped folding upwarping mechanism 4, a feeding straightening mechanism 5, and a controller. The feeding straightening mechanism 5 is arranged at one end 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 a preparation stand and has a roll of solder ribbon stock wound thereon. 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 wheel 54 includes a guide shaft 541, a first half wheel 542, a second half wheel 543, a clamp fixing ring 544, 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 wheel 542 and the second half wheel 543 are fixed to the two holding and fixing rings 544, respectively. The two clamping and fixing rings 544 are fixed to the guide shaft 541 by set screws, respectively. 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. 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.
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 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 clamping assembly.
As shown in fig. 1, 2 and 8, the drawing mechanism 3 includes a drawing guide rail 32, a bus bar rail 33, a drawing slider 34, a clamping assembly 35 and a drawing driving assembly 31. The bus bar rail 33 and the material pulling guide rail 32 are both fixed on the preparation frame 1. The bus bar sliding groove is opened on the top surface of the bus bar rail 33. One end of the bus bar sliding groove corresponds to the position of the feeding output port of the feeding straightening mechanism 5. The material pulling slide block 34 and the material pulling guide rail 32 form a sliding pair. The clamping assembly 35 is mounted on the puller slide. The clamping assembly 35 includes a clamping mounting plate 351, a clamping cylinder 352, a fixed jaw 353, a flipping jaw 354, and a connecting rod 355. The clamping mounting plate 351 is fixed on the pulling slider 34. The clamp cylinder 352 is fixed to the clamp mounting plate 351. The fixed clamping jaw 353 is fixed on one side of the clamping and mounting plate 351 close to the corresponding feeding straightening mechanism 5. One end of the connecting rod 355 is hinged with the pushing rod of the clamping cylinder 352, and the other end is hinged with the inner end of the overturning clamping jaw 354; the middle of the flip jaw 354 is hinged to the middle of the fixed jaw 353. The outer end of the flip clamp 354 corresponds to the outer end of the fixed clamp 353 to form a bus bar clamp. The fixed clamping jaw 353 is located right above the bus bar sliding groove on the bus bar rail 33 and is lower than the feeding output port of the feeding straightening mechanism 5. The clamping assembly 35 is capable of clamping the end of the bus bar output by the feed outlet of the feed straightening mechanism 5.
The material pulling driving assembly 31 comprises a material pulling belt wheel, a material pulling tension wheel, a first driving 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 first transmission belt bypasses the material pulling tension wheel and the two material pulling belt wheels. The first drive belt is fixed to the take-up block 34. 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. 1, 2, 9, and 10, the L-shaped turn-up mechanism 4 includes a bus bar turn-up pressure welding unit 41 and two L-shaped turn-up units 42. Two folding notches are arranged on the bus bar track 33 at intervals. The two L-shaped folding units 42 are respectively disposed at the two folding notches. The L-shaped folding unit 42 includes a folding assembly and a constant pressure assembly. The folding assembly includes a folding rotary knife 421 and a folding driving member 422. The turning knife 421 is composed of a turning shaft and a knife body which are integrally formed. The turnover rotating shaft is supported on the preparation frame. The cutter body is eccentrically arranged on the end surface of the outer end of the turnover rotating shaft. The cutter body is provided with a turnover surface. The axis of the turnover rotating shaft is positioned in the plane of the turnover surface. The turnover driving member 422 includes a driving turnover pulley, a driven turnover pulley, and a turnover driving belt. The driven turnover belt wheel is fixed with the turnover rotating shaft; the driving turnover belt wheel is supported on the preparation frame 1. The driving turnover belt wheel is connected with the driven turnover belt wheel through a turnover driving belt. The folding driving motor is fixed on the preparation frame 1, and the output shaft is fixed with the driving folding belt wheel. The cutter bodies in the two turnover assemblies respectively extend into the two turnover notches. The axis of the turning rotating shaft is flush with the bottom surface of the bus bar sliding groove of the bus bar preparation module 3. The axis of the turning rotating shaft and the length direction of the bus bar track 33 of the bus bar preparation module 3 form an angle of 45 degrees. The axes of the turning rotating shafts in the two turning assemblies form an angle of 90 degrees.
The constant pressure assembly comprises a turnover pressing block 423 and a constant pressure air cylinder 424. The folding press block 423 and the preparation frame form a sliding pair. The cylinder body of the constant pressure cylinder 424 is fixed on the preparation frame, and the piston rod is fixed with the turnover pressing block 423. The outer end of the top of the turnover pressing block 423 is provided with an inclined plane. The outer end edge of the bottom surface of the turnover pressing block 423 is parallel to the axis of the corresponding turnover rotating shaft. The bottom surface of the turnover pressing block 423 is flush with the top surface of the bus bar rail 33 in the bus bar preparation module 3. In the pushing state of the constant pressure cylinder 424, the folding pressing block 423 is located above the corresponding folding notch, and the edge of the outer end of the bottom surface of the folding pressing block 423 is located right above the axis of the folding rotating shaft. When the welding strip raw material is placed at the turnover notch, the turnover pressing block 423 of the constant-pressure component is pushed out to press the welding strip raw material. The folding rotary knife 421 rotates 180 °, and the bus bar of the straight bar can be folded into an L shape with a binding face.
As shown in fig. 10, the bus bar upwarp bonding unit 41 includes a fixing base 411, a first electrode block 412, a second electrode block 413, and a single-side upwarp bonding assembly. The fixing seat is fixed on the preparation frame. The fixing base 411 is U-shaped. The single-sided warp welding assembly includes a horn mount 414, a first bonding tool 415, a second bonding tool 416, a cam 417, and a warp drive 418. The inner side surface (i.e., the top surface) of the first bonding tool 415 and the fixing base 411 are fixed by an intermediate block. The tilt drive 418 employs an air cylinder. The tilting drive 418 is fixed on the fixing base 411, and the piston rod faces the first bonding head 415. The piston rod of the up-warp actuator 418 is fixed to the horn mount 414. A second bonding tool 416 is secured to the bonding tool mount 414. The second bonding tool 416 is disposed opposite to the outer side surface of the first bonding tool 415.
The welding head mounting seat 414 is provided with an adjusting chute. The bottom of the adjusting chute is provided with a threaded hole. The projection at the bottom of the cam 417 and the adjustment slot on the horn mount 414 form a sliding pair. The explorator 417 is provided with a waist-shaped stepped hole. Fastening bolts are arranged in the waist-shaped stepped holes. The screw rod of the fastening bolt and the threaded hole on the adjusting chute form a screw pair. When the fastening screw is tightened, the cam 417 presses against the adjusting runner, so that the cam 417 is fixed to the welding head mount 414. When the fastening bolt is unscrewed, the explorator 417 can slide on the welding head mounting seat 414 (the fastening bolt and the waist-shaped stepped hole generate displacement relatively), so that the fixing of the explorator 417 on any position of the adjusting chute is realized. The outside face of the cam 417 is higher than the outside face of the second bonding tool 416. The top of the explorator 417 near the second pressure welding head 416 is provided with a circular arc chamfer. The length direction of the adjusting chute is parallel to the arrangement direction of the master 417 and the second pressure welding head 416.
The number of the single-side tilted welding assemblies is two. Two unilateral perk welding assembly set up side by side. The first electrode block 412 is fixed to the middle block. The two second electrode blocks 413 are fixed to the horn mounts 414 in the two single-sided warped welding assemblies, respectively. The first electrode block 412, the middle block, the second electrode block 413 and the bonding tool mounting seat 414 are made of conductive materials, and the resistivity of the conductive materials is lower than that of the first bonding tool 415 and the second bonding tool 416. Therefore, a large current flows through the first bonding tool 415 and the second bonding tool 416 to generate heat, so as to achieve the effect of resistance welding.
As shown in fig. 11, the material moving mechanism 2 includes a material moving slide rail, a material moving slide block, a transverse material moving driving member, a material moving frame 21, a material moving adjusting driving member 22, an upper lifting driving member 23, a mounting frame 24, and a pneumatic suction cup set 25. 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 21 and respectively form a sliding pair with the two material moving sliding rails. The transverse material moving driving part comprises a material moving driving shaft, a material moving motor and two first belt transmission assemblies. The material moving driving shaft is supported on the preparation frame and is driven by a material moving motor. The first belt transmission assembly comprises a first driving material moving belt wheel, a first driven material moving belt wheel and a material moving belt. The first driving material moving belt wheel is fixed on the material moving driving shaft. The first driven material moving belt wheel is supported on the preparation frame. The first driving material moving belt wheel is connected with the first 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 material moving adjusting driving part 22 and the lifting driving part 23 adopt electric sliding tables; the bases of two horizontally arranged material-moving adjusting driving members 22 are arranged on the material-moving frame 21 at intervals. The bases of the two lifting driving elements 23 are respectively arranged on the sliding blocks of the two material moving adjusting driving elements 22. Two mounting brackets 24 are mounted on the sliding blocks of the two upper lifting drive members 23, respectively. The bottom of the mounting frame 24 is provided with a pneumatic suction cup group 25. The pneumatic suction cup set 25 comprises a plurality of pneumatic suction cups which are arranged at equal intervals in sequence along the conveying direction of the conveying mechanism. Each pneumatic sucking disc all sets up downwards. The material moving mechanism 2 grabs the two bus bars folded into the L shape on the bus bar rail 33 by the pneumatic suction cup, and conveys the bus bars to the bus bar upwarping pressure welding unit 41 for upwarping and pressure welding.
The material moving adjusting driving piece 22, the motor in the upward lifting driving piece 23, the material pulling motor, the turnover driving motor and the material moving motor are all connected with the controller through motor drivers. The clamping cylinder 352, the constant pressure cylinder 424 and the upturned driving piece 418 are all connected with the controller through reversing valves. The air suction port of the pneumatic suction cup group 25 is connected with a vacuum generator through a reversing valve. And control interfaces of the reversing valves are connected with the controller through relays. The first electrode block 412 is connected to one terminal (positive electrode) of a power supply through a first relay and a cable; the second electrode block 413 is connected to the other terminal (positive electrode) of the power supply through a cable. And the control interface of the first relay is connected with the controller. The controller adopts PLC or singlechip.
The bus bar preparation method of the automatic L-shaped upwarping bus bar preparation device comprises the following specific steps:
step one, the material pulling mechanism 3 pulls out two sections of welding strips from the feeding straightening mechanism 5 to the bus bar sliding groove.
1-1. the clamp cylinder 352 is retracted causing the outer end of the flipping jaw 354 to flip up and away from the outer end of the fixed jaw 353. Meanwhile, the cutting rack position switching cylinder 576 retracts to expose the solder strip at the supply output port of the supply straightening mechanism 5.
1-2, the material pulling motor rotates forward to drive the clamping assembly 35 to move towards the feeding straightening mechanism 5 until the solder strip at the feeding output port of the feeding straightening mechanism 5 is positioned between the overturning clamping jaw 354 and the fixed clamping jaw 353.
1-3. the clamp cylinder 352 is retracted so that the invert jaw 354 and the stationary jaw 353 grip the solder strip at the feed outlet of the feed straightening mechanism 5.
And 1-4, the material pulling motor rotates reversely to drive the clamping assembly 35 to move away from the feeding straightening mechanism 5. The cutting rack position switching cylinder 576 pushes out so that the cutting rack is reset. When the welding strip is pulled out by a preset distance, the material pulling motor stops rotating, the pressing cylinder 572 is pushed out, and the pressing head presses the welding strip; the cutting cylinder 574 pushes out to cut the solder ribbon.
1-5, the material pulling motor continues to rotate reversely until the to-be-bent position of the first section of the welding strip reaches the L-shaped folding unit 42 far away from the feeding straightening mechanism 5. Thereafter, the clamp cylinder 352 is retracted so that the invert jaw 354 releases the weld tape from the fixed jaw 353.
And 1-6, pulling out and cutting the second section of the welding strip according to the method of the steps 1-2 to 1-4. Then, the pulling motor continues to rotate reversely until the to-be-bent position of the second section of the welding strip reaches the L-shaped folding unit 42 close to the feeding straightening mechanism 5. The clamp cylinder 352 is retracted so that the invert jaw 354 releases the weld bead from the fixed jaw 353.
1-7, the material pulling motor continuously rotates reversely to drive the clamping assembly 35 to return to the initial position.
Step two, turning and folding the welding strip into an L shape
2-1, the constant pressure cylinders 424 of the constant pressure components in the two first L-shaped bending components are pushed out, so that the two turnover pressing blocks 423 press two welding strips on the bus bar sliding groove respectively.
And 2-2, the two bending driving pieces respectively drive the two bending rotary cutters to rotate 180 degrees, so that the two welding strips on the bus bar sliding groove are folded into an L shape.
And step three, the two pneumatic sucker groups 25 of the material moving mechanism 2 respectively move to the positions right above the two L-shaped welding strips on the bus bar sliding groove under the control of the controller, and respectively suck the two L-shaped welding strips through negative pressure. Then, the material moving mechanism 2 places the turning positions of the two sections of welding strips between the first bonding tool 415 and the second bonding tool 416 of the two single-side tilted welding assemblies, and makes the right-angle edge to be bent on the L-shaped welding strip align and contact with the explorator 417.
And step four, the bus bar upwarping pressure welding unit 41 performs upwarping and welding on the L-shaped welding strip.
4-1, the two upward warping driving pieces 418 respectively drive a first pressure welding head 415 and a second pressure welding head 416 of the two single-side warping welding assemblies to clamp the turnover positions of the two welding strips; the right-angled edge of the solder strip contacting the explorator 417 bends and upwarps under the extrusion of the explorator 417.
4-2, electrifying the first bonding tool 415 and the second bonding tool 416; the first bonding tool 415 and the second bonding tool 416 generate heat, and bonding surfaces at the corresponding welding strip turning positions are welded together, so that two L-shaped upward-warped bus bars are obtained.
And 4-3. the two upturned driving pieces 418 respectively drive the first bonding tool 415 and the second bonding tool 416 of the two single-side tilting welding assemblies to separate.
And step five, the material moving mechanism 2 separates the two L-shaped upwarping bus bars from the bus bar upwarping pressure welding unit 41 and places the two L-shaped upwarping bus bars in the L-shaped upwarping bus bar collecting area.
Claims (9)
1. An automatic preparation device for an L-shaped upwarping bus bar comprises a preparation frame, a material pulling mechanism, a material moving mechanism, an L-shaped turnover upwarping mechanism and a feeding straightening mechanism; the method is characterized in that: the feeding straightening mechanism is arranged at one end 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 and 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 and a vertical straightening assembly; the straightening frame is fixed on the preparation frame;
the guide wheel comprises a guide shaft, a first half wheel, a second half wheel 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 first half piece wheel and the second half piece wheel are both detachably fixed with the guide shaft; 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 horizontal straightening assembly and the vertical straightening assembly are positioned between the guide wheel and the bus bar cutting unit;
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 cylinder body of the pressing cylinder is fixed with the straightening frame, and the piston rod faces the guide groove; a pressure head is fixed on a piston rod of the pressing cylinder; the cutting frame and the straightening frame form a sliding pair; 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 cutting frame; the cutting-off knife is fixed with a piston rod of the cutting-off cylinder; 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 at the outlet end of the bus bar channel; the cylinder body and the piston rod of the cutting frame position switching cylinder are respectively fixed with the cutting frame and the straightening frame;
the material pulling mechanism comprises a material pulling guide rail, a bus bar track, a material pulling sliding block, a 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 bus bar sliding groove; one end of the bus bar sliding groove corresponds to the position of a feeding output port of the feeding straightening mechanism; 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 clamping assembly is arranged on the material pulling sliding block; the bus bar clamping claw on the clamping component faces to the position of the feeding output port of the corresponding feeding straightening mechanism; the bus bar clamping claw on the clamping assembly is positioned right above the bus bar sliding groove;
the L-shaped turnover mechanism comprises a bus bar turnover pressure welding unit and two L-shaped turnover units; two turnover notches are arranged on the bus bar track at intervals; the two L-shaped turnover units are respectively arranged at the two turnover notches; the L-shaped turnover unit comprises a turnover assembly and a constant pressure assembly; the turnover assembly comprises a turnover rotary knife and a turnover driving piece; the turnover rotary knife consists of a turnover rotary shaft and a knife body which are integrally formed; the turnover rotating shaft is supported on the preparation frame; the cutter body is eccentrically arranged on the end surface of the outer end of the turnover rotating shaft; the cutter body is provided with a turnover surface; the turnover rotary knife is driven by a turnover driving piece; the cutter bodies in the two turnover assemblies respectively extend into the two turnover notches; the constant pressure assembly comprises a turnover pressing block and a constant pressure cylinder; the folding pressing block and the preparation frame form a sliding pair; the cylinder body of the constant-pressure cylinder is fixed on the preparation frame, and the piston rod is fixed with the turnover pressing block; the outer end of the top of the turnover pressing block is provided with an inclined plane;
the bus bar upwarping pressure welding unit comprises a fixed seat, a first electrode block, a second electrode block and a single-side upwarping welding assembly; the fixed seat is fixed on the preparation frame; the single-side warping welding assembly comprises a mounting seat, a first pressure welding head, a second pressure welding head, a profiling mold and a warping driving piece; the inner side surface of the first pressure welding head is fixed with the fixed seat; the mounting seat is mounted on the fixed seat through the upwarping driving piece; the second pressure welding head is fixed on the mounting seat; the second pressure welding head is arranged opposite to the outer side surface of the first pressure welding head; the bottom of the profiling is arranged on the mounting seat and is positioned on one side of the second pressure welding head; the number of the single-side tilted welding assemblies is two; the two single-side tilted welding assemblies are arranged side by side; the first pressure welding head is connected with the first electrode block; the second pressure welding head is connected with the second electrode block;
the material moving mechanism comprises a transverse material moving driving part, a material moving frame, a material moving adjusting driving part, an upward lifting driving part, an installation frame and a pneumatic sucker group; the material moving frame and the preparation frame form a sliding pair and are driven by a transverse material moving driving piece; the two mounting racks are respectively mounted on the material moving rack through two lifting driving parts; the bottom of the mounting rack is provided with a pneumatic sucker group; the pneumatic sucker group comprises a plurality of pneumatic suckers which are sequentially arranged; each pneumatic sucking disc all sets up downwards.
2. The automatic preparation device of the L-shaped upwarping bus bar 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 first 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.
3. The automatic preparation device of the L-shaped upwarping bus bar 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.
4. The automatic preparation device of the L-shaped upwarping bus bar according to claim 1, wherein: the material pulling driving assembly comprises a material pulling belt wheel, a material pulling tension wheel, a first driving 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 first transmission belt bypasses the material pulling tension wheel and the two material pulling belt wheels; the first 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.
5. The automatic preparation device of the L-shaped upwarping bus bar according to claim 4, wherein: the clamping assembly comprises a clamping mounting plate, a clamping cylinder, a fixed clamping jaw, a turnover clamping jaw and a connecting rod; the clamping mounting plate is fixed on the pulling slide block; the clamping cylinder is fixed on the clamping mounting plate; the fixed clamping jaw is fixed on one side of the clamping mounting plate close to the corresponding feeding straightening mechanism; one end of the connecting rod is hinged with a pushing rod of the clamping cylinder, and the other end of the connecting rod is hinged with the inner end of the overturning clamping jaw; the middle part of the overturning clamping jaw is hinged with the middle part of the fixed clamping jaw; the outer end of the overturning clamping jaw corresponds to the outer end of the fixing clamping jaw to form a bus bar clamping jaw.
6. The automatic preparation device of the L-shaped upwarping bus bar according to claim 1, wherein: the turnover driving piece comprises a driving turnover belt wheel, a driven turnover belt wheel and a turnover transmission belt; the driven turnover belt wheel is fixed with the turnover rotating shaft; the driving turnover belt wheel is supported on the preparation frame; the driving turnover belt wheel is connected with the driven turnover belt wheel through a turnover transmission belt; the turnover driving motor is fixed on the preparation frame, and an output shaft is fixed with the driving turnover belt wheel; the axis of the turnover rotating shaft is flush with the bottom surface of the bus bar sliding groove of the bus bar preparation module; the axis of the turnover rotating shaft and the length direction of a bus bar track of the bus bar preparation module form an angle of 45 degrees; the axes of the turning rotating shafts in the two turning assemblies form an angle of 90 degrees; the edge of the outer end of the bottom surface of the turnover pressing block is parallel to the axis of the corresponding turnover rotating shaft; the bottom surface of the turnover pressing block is flush with the top surface of the bus bar track in the bus bar preparation module.
7. The automatic preparation device of the L-shaped upwarping bus bar according to claim 1, wherein: the mounting seat is provided with an adjusting sliding chute; the bottom of the adjusting chute is provided with a threaded hole; the profiling and the adjusting chute on the mounting seat form a sliding pair; a waist-shaped stepped hole is formed on the profiling; a fastening bolt is arranged in the waist-shaped stepped hole; the screw rod of the fastening bolt and the threaded hole on the adjusting chute form a screw pair; the outer side surface of the profiling is higher than the outer side surface of the second pressure welding head; the top of the profiling close to the side of the second pressure welding head is provided with an arc chamfer; the length direction of the adjusting sliding groove is parallel to the arrangement direction of the profiling and the second pressure welding heads.
8. The automatic preparation device of the L-shaped upwarping bus bar according to claim 1, wherein: the transverse material moving driving part comprises a material moving driving shaft, a material moving motor and two first belt transmission assemblies; the material moving driving shaft is supported on the preparation frame and is driven by a material moving motor; the first belt transmission assembly comprises a first driving material moving belt wheel, a first driven material moving belt wheel and a material moving belt; the first driving material moving belt wheel is fixed on the material moving driving shaft; the first driven material moving belt wheel is supported on the preparation frame; the first driving material moving belt wheel is connected with the first driven material moving belt wheel through a material moving belt; the two material transferring belts are respectively fixed with the two ends of the material transferring frame; a material moving adjusting driving piece is arranged between the lifting driving piece and the mounting rack; the material moving adjusting driving part and the lifting driving part adopt electric sliding tables.
9. The method for preparing an L-shaped upwarp bus bar of the automatic L-shaped upwarp bus bar preparation device according to claim 5, wherein the method comprises the following steps: firstly, pulling two sections of welding strips out of a feeding straightening mechanism by a material pulling mechanism to a bus bar sliding groove;
1-1, retracting the clamping cylinder to enable the outer end of the overturning clamping jaw to overturn upwards and separate from the outer end of the fixed clamping jaw; meanwhile, the cutting frame position switching cylinder retracts to expose the welding strip at the feeding output port of the feeding straightening mechanism;
1-2, the material pulling motor rotates forwards to drive the clamping assembly to move towards the feeding straightening mechanism until a welding strip at a feeding output port of the feeding straightening mechanism is positioned between the overturning clamping jaw and the fixed clamping jaw;
1-3, retracting the clamping cylinder to enable the overturning clamping jaw and the fixed clamping jaw to clamp the welding strip at the feeding output port of the feeding straightening mechanism;
1-4, reversing the material pulling motor to drive the clamping assembly to move away from the 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; pushing out by a cutting cylinder to cut off the welding strip;
1-5, continuing to rotate the material pulling motor reversely until the part to be bent of the first section of the welding strip reaches the L-shaped folding unit far away from the feeding straightening mechanism; then, the clamping cylinder retracts, so that the overturning clamping jaw and the fixed clamping jaw loosen the welding strip;
1-6, pulling out and cutting off the second section of the welding strip according to the method of the steps 1-2 to 1-4; then, the material pulling motor continuously rotates reversely until the part to be bent of the second section of welding strip reaches the L-shaped folding unit close to the feeding straightening mechanism; the clamping cylinder retracts, so that the overturning clamping jaw and the fixed clamping jaw loosen the welding strip;
step two, turning and folding the welding strip into an L shape
2-1, pushing out the constant pressure cylinders of the constant pressure components in the two first L-shaped bending components to enable the two turnover pressing blocks to respectively press the two welding strips on the bus bar sliding groove;
2-2, the two bending driving pieces respectively drive the two bending rotary cutters to rotate 180 degrees, so that the two welding strips on the bus bar sliding groove are folded into an L shape;
step three, two pneumatic sucker groups of the material moving mechanism respectively move to positions right above two sections of L-shaped welding strips on the bus bar sliding groove under the control of the controller, and respectively suck the two sections of L-shaped welding strips through negative pressure; then, the material moving mechanism respectively places the turning positions of the two sections of welding strips between a first pressure welding head and a second pressure welding head of the two single-side upwarping welding assemblies, and enables the right-angle side to be bent on the L-shaped welding strip to be aligned with and contacted with the profiling;
step four, the bus bar upwarping pressure welding unit upwarps and welds the L-shaped welding strip;
4-1, the two upward warping driving pieces respectively drive a first pressure welding head and a second pressure welding head of the two single-side warping welding assemblies to clamp the turnover positions of the two welding strips; the right-angle edge of the welding strip, which is in contact with the explorator, is bent and upwarps under the extrusion of the explorator;
4-2, electrifying the first pressure welding head and the second pressure welding head; the first pressure welding head and the second pressure welding head generate heat, and the binding surfaces at the corresponding welding strip turnover positions are welded together to obtain two L-shaped upwarp bus bars;
4-3, the two upward warping driving pieces respectively drive a first pressure welding head and a second pressure welding head of the two single-side warping welding assemblies to separate;
and fifthly, separating the two L-shaped upwarping bus bars from the bus bar upwarping pressure welding unit by the material moving mechanism.
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