CN114260606A - Liftable flexible tool and welding method - Google Patents
Liftable flexible tool and welding method Download PDFInfo
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- CN114260606A CN114260606A CN202210041214.8A CN202210041214A CN114260606A CN 114260606 A CN114260606 A CN 114260606A CN 202210041214 A CN202210041214 A CN 202210041214A CN 114260606 A CN114260606 A CN 114260606A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The invention relates to a tool design, in particular to a liftable flexible tool and a welding method, which can effectively realize accurate position arrangement of a cylindrical battery cell and a full-lug current collector and simultaneously ensure that welding does not have deviation, and the tool comprises a workbench, a lifting mechanism, a clamping tool and a driving device, wherein the clamping tool comprises a plurality of positioning teeth, a limiting plate and a driving plate, the limiting plate is provided with a through hole, the limiting plate is provided with a plurality of limiting grooves pointing to the circle center direction of the through hole, the positioning teeth are arranged in the limiting grooves and are in sliding fit with the limiting grooves, the driving plate is provided with an inclined rail, and the positioning teeth are in sliding fit with the rail on the driving plate; the dial plate is in running fit with the base; the driving plate is provided with a connecting portion, a notch is formed in the base, the telescopic end of the lifting mechanism is connected with the base, the driving device comprises a telescopic mechanism, the telescopic end of the telescopic mechanism and one end of the connecting rod form a spherical pair to be connected, and the connecting portion stretches out of the notch and forms a revolute pair to be connected with the other end of the connecting rod.
Description
Technical Field
The invention relates to a tool design, in particular to a liftable flexible tool and a welding method.
Background
The cylindrical lithium cell of prior art needs to press from both sides cylindrical electric core and get and carry the action in the production process on the one hand, still need weld cylindrical electric core and full utmost point ear mass flow body, and this action adopts the mode that C pressed from both sides or V pressed from both sides to press from both sides the outer wall of cylindrical electric core at present to take C to press from both sides as the example, and the size of general different cylindrical lithium cell can be equipped with the not C of equidimension and press from both sides, otherwise can't press from both sides cylindrical electric core and get.
However, in the long-term use process, the applicant finds that the diameter of a cylinder of a cylindrical battery cell of the same model also has deviation, the incoming material of the cylindrical battery cell with a nominal diameter of 42 mm is only 40 mm, and the height of the cylindrical battery cell is slightly different, so that on one hand, even if the cylindrical battery cell is clamped by a C-shaped clamp matched with the nominal diameter of 42 mm, the position of the circle center can be loosened and cannot be determined, and moreover, the incoming material of the cylindrical battery cell has deviation, the position of the cylindrical battery cell cannot be accurately placed after the C-shaped clamp is adopted, and therefore the phenomenon that welding deviation occurs between a full-lug current collector and the cylindrical battery cell is caused.
Secondly, as shown in fig. 8 of the prior art, the current prior art mainly includes a cell clamp a, a full tab current collector B, a welding pressing plate C, a laser welding gun D and a cylindrical cell E, wherein the welding pressing plate C is in a shape of a Chinese character 'mi', a sector area for laser of the laser welding gun to pass through is formed between the welding pressing plate C and the sector area, in the prior art, a welding process for a full tab battery is that the cylindrical cell E is clamped by the cell clamp a, the full tab current collector B is placed on the cylindrical cell E after being subjected to loading, deviation correction, centering and other actions, and then the full tab current collector B is grabbed by a mechanical arm, the cell clamp a conveys the cylindrical cell E and the full tab current collector B to the lower part of the welding pressing plate C, and after the welding pressing plate C moves downwards to press the full tab current collector B, laser of the laser welding gun D welds the full tab current collector B and the cylindrical cell E in the sector area, but the main problem of the process is that errors and deformation exist in the incoming materials of the cylindrical cell E After the cell fixture A is clamped and placed by the full-tab current collector B, when the welding pressing plate C moves downwards, deviation may occur in the downward movement height, namely, the distance between the welding pressing plate C and the laser welding gun D changes, but because the focal length of the laser welding gun D is unchanged, positive defocusing or negative defocusing may occur in the focal point during welding, and further, a false welding or over welding condition occurs; the problem of this welding process greatly affects the use effect of the full tab battery.
Disclosure of Invention
Aiming at the problems mentioned in the background technology, the invention aims to provide a liftable flexible tool and a welding method, which can effectively realize accurate position arrangement of a cylindrical battery core and a full-lug current collector and ensure stable welding effect.
The technical purpose of the invention is realized by the following technical scheme: a liftable flexible tool comprises a workbench, a lifting mechanism, a clamping tool and a driving device, wherein the clamping tool comprises a plurality of positioning teeth, a plurality of limiting plates and a drive plate, the limiting plates are provided with through holes, the limiting plates are provided with a plurality of limiting grooves pointing to the circle center direction of the through holes, the positioning teeth are arranged in the limiting grooves and are in sliding fit with the limiting grooves, the drive plate is provided with inclined rails, an auxiliary circle concentric with the through holes is arbitrarily made at each intersection point of each rail, the included angle between the motion direction of each intersection point of each rail and the diameter of the drive plate passing through the intersection point is the same, the drive plate is pasted on the limiting plates and can be in rotating fit with the limiting plates, and the positioning teeth are in sliding fit with the rails on the drive plate; the dial plate is in running fit with the base; the driving plate is provided with a connecting portion, a notch is formed in the base, the telescopic end of the lifting mechanism is connected with the base, the driving device comprises a telescopic mechanism, the body of the telescopic mechanism is installed on the workbench and is in running fit with the workbench, the telescopic end of the telescopic mechanism is connected with one end of the connecting rod in a spherical pair mode, and the connecting portion stretches out of the notch and is connected with the other end of the connecting rod in a running pair mode.
Preferably, the positioning device further comprises a limiting shaft, the limiting shaft is inserted into the positioning teeth, and the limiting shaft is in sliding fit with the track.
Preferably, the track limiting device further comprises a bearing, wherein the bearing is mounted on a limiting shaft, and the limiting shaft is in rolling fit with the track through the bearing.
Preferably, the current collector further comprises a top plate, wherein a second through hole is formed in the top plate, the size of the second through hole is consistent with that of the full-lug current collector, and the second through hole and the through hole are coaxial.
Preferably, the base is further provided with a second limiting groove, and the limiting shaft can be in sliding fit with the second limiting groove through a bearing.
Preferably, the connecting part is provided with a strip-shaped hole, and the connecting rod is connected with the strip-shaped hole in a sliding and revolute pair mode through a bolt.
The technical purpose of the invention is realized by the following technical scheme: a welding method adopting a liftable flexible tool comprises the following steps:
step one, conveying a limiting plate to an initial station after a workbench rotates, and dropping the limiting plate by a lifting mechanism;
step two, a jacking device is arranged below the workbench, the telescopic mechanism drives the connecting part to rotate, and then the driving plate rotates, so that the positioning teeth slide relative to the outer side of the through hole, the through hole is gradually enlarged, and the cylindrical battery cell is conveyed into the through hole by the jacking device;
after the cylindrical battery cell is conveyed into the through hole until the cylindrical battery cell is propped by the top plate, the telescopic mechanism drives the connecting part to rotate, so that the through hole is reduced until the cylindrical battery cell is clamped, the positioning teeth are in an intermediate state at the moment, and the jacking device jacks the cylindrical battery cell upwards once again; the full-lug current collector is placed into the second through hole in the top plate by the mechanical arm, and the full-lug current collector is subjected to deviation rectification and positioning at the moment;
fourthly, the workbench rotates again to enable the limiting plate to enter the next station; the limiting plate is jacked up by the lifting mechanism b, and the positioning teeth always keep a clamping state on the cylindrical battery cell at the moment;
and fifthly, after the full-lug current collector in the top plate is abutted against the welding pressing plate at the top, welding the fan-shaped hollow part of the welding pressing plate by a laser welding gun.
Preferably, the positions of the welding pressure plate and the laser welding torch are always kept unchanged.
In summary, the invention mainly has the following beneficial effects: the invention can not only realize the stable and accurate clamping action of the cylindrical battery cell of the incoming material, but also adapt to the cylindrical battery cells of various models by one tool, ensure the cylindrical battery cell to be clamped, and also directly determine the circle center position of the battery cell, and can realize the rapid and accurate position arrangement between the full-lug current collector and the cylindrical battery cell by matching with the second through hole for positioning the full-lug current collector on the top plate.
Moreover, through the above-mentioned design of workstation have a plurality of flexible frocks, each flexible frock is equipped with independent elevating system and telescopic machanism to can realize when the workstation rotates, partly flexible frock is carrying out the centre gripping action, and the part presss from both sides tightly and puts the action with the full utmost point ear mass flow body, and the part carries out the welding action after the jacking, all can accomplish on a workstation.
Simultaneously telescopic machanism can guarantee through the structural design of spherical pair, revolute pair that flexible frock is when going up and down with falling down, all can stably drive the driver plate on the flexible frock and rotate to the stability of the working process of effectual assurance flexible frock.
Meanwhile, the welding method provides a set of new welding process, namely, after shaping, positioning and grabbing are carried out by adopting the flexible tool, the flexible tool is aligned with the full-lug current collector on the top plate, the full-lug current collector is placed on the upper part of the flexible tool, accurate positioning can be respectively carried out, the position of a laser welding gun is kept unchanged, the cylindrical battery cell with the full-lug current collector installed is fed upwards in a whole mode, the position of the cylindrical battery cell is determined, the position of the full-lug current collector is determined, the position of a welding pressure plate is determined, and the position of the laser welding gun is determined, so that the welding effect of laser welding can be well ensured.
Drawings
FIG. 1 is a first schematic structural diagram of the present invention;
FIG. 2 is a second schematic structural view of the present invention;
FIG. 3 is a third schematic structural view of the present invention;
FIG. 4 is a first schematic diagram illustrating an internal structure of the flexible tooling of the present invention;
FIG. 5 is a schematic view of the internal structure of the flexible tooling of the present invention;
FIG. 6 is a third schematic view of the internal structure of the flexible tooling of the present invention;
FIG. 7 is a fourth schematic view of the internal structure of the flexible tooling of the present invention;
fig. 8 is a schematic view of a prior art welding process.
In the figure: a. a work table; b. a lifting mechanism; 1. positioning teeth; 2. a limiting plate; 3. a dial; 4. a through hole; 5. a limiting groove; 6. a track; 7. a limiting shaft; 8. a bearing; 9. a base; 10. a top plate; 11. a second through hole; 12. a connecting portion; 13. a notch; 14. a telescoping mechanism; 15. a connecting rod; 16. a second limiting groove; 17. and (4) strip-shaped holes.
FIG. 8: A. a cell clamp; B. a full tab current collector; C. welding a pressing plate; D. a laser welding gun; E. cylindrical electric core.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the specific implementation, a plurality of flexible tools are arranged on a workbench a, each flexible tool is provided with an independent lifting mechanism b and a telescopic mechanism 14, the lifting mechanism b below the flexible tool is firstly descended to enable the flexible tool to descend to a specified position, the workbench a rotates to enable the flexible tool to be loaded to be positioned beside a mechanical arm, a cylindrical battery cell is placed into a through hole 4 through the mechanical arm, and simultaneously the telescopic mechanism 14 drives the flexible tool to enable a drive plate 3 to rotate, the flexible tool works according to the principle that a positioning tooth 1 can slide through a limiting groove 5 on a limiting plate 2, the direction of the limiting groove 5 points to the direction of the through hole 4, so that the positioning tooth 1 only moves back and forth relative to the direction of the through hole 4, meanwhile, a limiting shaft 7 is arranged on the positioning tooth 1, a plurality of tracks 6 are arranged on the drive plate 3, and the tracks 6 can be in the shape of an inclined straight line or arc, the limiting shafts 7 can be in sliding fit with the rails 6 and can also be in rolling fit through the bearings 8, the limiting shaft 7 on each positioning tooth 1 is correspondingly installed on one rail 6, included angles between all the rails 6 and the diameter of the drive plate 3 are the same and are centrosymmetric, when the drive plate 3 rotates, all the positioning teeth 1 can synchronously move in the limiting groove 5, the movement track can be fitted into a continuously-changed circle, therefore, even if the supplied cylindrical battery cell has errors, the cylindrical battery cell can be accurately clamped, position deviation can not occur, the extruded and deformed cylindrical battery cell can be shaped, the positioning teeth 1 can lock the supplied cylindrical battery cell through telescopic adjustment of the telescopic mechanism 14, the size of the through holes two 11 on the top plate 10 is the size of the full-lug current collector (the size of the full-lug current collector is smaller than the cross section of the cylindrical battery cell), the second through hole 11 and the through hole 4 are designed coaxially, when the full tab current collector is placed in the second through hole 11, the full tab current collector is placed on the cylindrical battery cell and simultaneously the centering action is also completed, at the moment, the flexible tooling is jacked up to the height of the laser welding machine from the workbench a through the lifting mechanism b again, the full tab current collector and the cylindrical battery cell are compressed through the welding pressure plate at the top and are welded through the laser welding machine, although the flexible tooling can be jacked to different heights through the lifting mechanism b, because one end of the telescopic mechanism 14 rotates on the workbench a, the telescopic end of the other end is connected with one end of the connecting rod 15 in a spherical pair mode, the connecting part 12 stretches out of the notch 13 and is connected with the other end of the connecting rod 15 in a sliding and rotating pair mode, the rotation of the drive plate 3 can be completed at different heights, and further, the fact that each flexible tooling can independently lift and descend under the multi-station condition is achieved, Chucking and loosening action to can guarantee the accuracy of holding the position all the time between full utmost point ear mass flow body and the cylindrical electric core, moreover the jacking height is controllable, and the laser-beam welding machine position remains stable all the time, can effectively guarantee the welding effect.
The invention provides a new design for a welding process, and the design comprises the following steps of:
step one, conveying the limiting plate 2 to an initial station after the workbench a rotates, and descending the flexible tool of the lifting mechanism b, specifically, falling the limiting plate 2 connected with the lifting mechanism b;
step two, a jacking device is arranged below the workbench a and used for feeding the cylindrical battery cell, the telescopic mechanism 14 drives the connecting part 12 to rotate, the driving plate 3 is further rotated, the positioning teeth 1 slide relative to the outer side of the through hole 4, the through hole 4 is gradually enlarged, and the jacking device sends the cylindrical battery cell into the through hole 4;
after the cylindrical battery cell is conveyed into the through hole 4 until the cylindrical battery cell is propped by the top plate 10, the telescopic mechanism 14 drives the connecting part 12 to rotate, so that the through hole 4 is reduced until the cylindrical battery cell is clamped to complete the first height positioning of the cylindrical battery cell, and at the moment, the positioning tooth 1 is in an intermediate state, namely, the air inlet and the air outlet of the telescopic mechanism (air cylinder) are in a closed state, so that the cylindrical battery cell can slide relative to the positioning tooth 1; the jacking device jacks the cylindrical battery cell upwards once again, so that the top of the cylindrical battery cell is abutted against the top plate 10 to complete secondary positioning; the mechanical arm puts the full-lug current collector into the second through hole 11 on the top plate 10, and the full-lug current collector is subjected to rectification and positioning at the moment;
fourthly, the workbench a rotates again to enable the limiting plate 2 to enter the next station; the lifting mechanism b slowly jacks up the limiting plate 2, at the moment, the positioning teeth 1 always keep a clamping state on the cylindrical battery core, and the full-lug current collector does not vibrate and the like;
and step five, after the full-lug current collector in the top plate 10 abuts against the welding pressing plate at the top, welding the fan-shaped hollow part of the welding pressing plate by a laser welding gun, wherein the positions of the welding pressing plate and the laser welding gun are always kept unchanged during welding.
Such welding mode is at first after the position of having accomplished cylindrical electric core is confirmed and the plastic, carry out the position to the full utmost point ear mass flow body again and confirm, guarantee simultaneously that full utmost point ear mass flow body and cylindrical electric core remain concentric all the time and can not appear vibrations and not hard up and seam crossing remain stable, when full utmost point ear mass flow body rises to welding clamp plate department with cylinder electric core, need not to weld the clamp plate and extrude full utmost point ear mass flow body once more, laser welder, the welding clamp plate, the position of full utmost point ear mass flow body and cylindrical electric core has all been fixed a position in advance, under the condition that position skew does not appear, laser welder welds, thereby the condition of rosin joint or cross-welding appears when effectually having avoided welding.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a flexible frock of liftable which characterized in that: comprises a workbench (a), a lifting mechanism (b), a clamping tool and a driving device, the clamping tool comprises a plurality of positioning teeth (1), a limiting plate (2) and a driving plate (3), the limiting plate (2) is provided with a through hole (4), the limiting plate (2) is provided with a plurality of limiting grooves (5) pointing to the circle center direction of the through hole, the positioning teeth (1) are arranged in the limiting grooves (5) and are in sliding fit with the limiting grooves (5), the drive plate (3) is provided with an inclined track (6) which arbitrarily makes an auxiliary circle concentric with the through hole (4) intersect with each track (6), the movement direction of the intersection point of each track (6) is the same as the diameter of the drive plate (3) passing through the intersection point, the drive plate (3) is pasted on the limiting plate (2) and can be in rotating fit with the limiting plate (2), the positioning teeth (1) are in sliding fit with the tracks (6) on the drive plate (3); the dial plate (3) is in running fit with the base (9); be equipped with connecting portion (12) on driver plate (3), be equipped with notch (13) on base (9), the flexible end and the base (9) of elevating system (b) are connected, and drive arrangement includes telescopic machanism (14), telescopic machanism's (14) fuselage install on workstation (a) and with workstation (a) normal running fit, telescopic machanism's (14) flexible end and the one end formation sphere of connecting rod (15) are vice to be connected, and connecting portion (12) are visited notch (13) and are formed revolute pair with the other end of connecting rod (15) and are connected.
2. The liftable flexible frock of claim 1, characterized in that: the positioning device is characterized by further comprising a limiting shaft (7), wherein the limiting shaft (7) is inserted into the positioning teeth (1), and the limiting shaft (7) is in sliding fit with the track (6).
3. The liftable flexible frock of claim 2, characterized in that: still include bearing (8), bearing (8) are installed on spacing axle (7), and spacing axle (7) pass through bearing (8) and track (6) roll fit.
4. The liftable flexible frock of claim 1, characterized in that: still include roof (10), be equipped with through-hole two (11) on roof (10), the size of through-hole two (11) is unanimous with the size of the full utmost point ear mass collector, through-hole two (11) and through-hole (4) are coaxial.
5. The liftable flexible frock of claim 1, characterized in that: and a second limiting groove (16) is further formed in the base (9), and the limiting shaft (7) can be in sliding fit with the second limiting groove (16) through a bearing (8).
6. The liftable flexible frock of claim 1, characterized in that: be equipped with bar hole (17) on connecting portion (12), connecting rod (15) form through the bolt and bar hole (17) and slide and revolute pair is connected.
7. A welding method adopting a liftable flexible tool is characterized in that: the method comprises the following steps:
step one, conveying a limiting plate (2) to an initial station after a workbench (a) rotates, and dropping the limiting plate (2) by a lifting mechanism (b);
step two, a jacking device is arranged below the workbench (a), the telescopic mechanism (14) drives the connecting part (12) to rotate, the driving plate (3) is further rotated, the positioning teeth (1) slide relative to the outer side of the through hole (4), the through hole (4) is gradually enlarged, and the jacking device sends the cylindrical battery cell into the through hole (4);
after the cylindrical battery core is conveyed into the through hole (4) until the cylindrical battery core is jacked by the top plate (10), the telescopic mechanism (14) drives the connecting part (12) to rotate, so that the through hole (4) is reduced until the cylindrical battery core is clamped, the positioning teeth (1) are in a middle state at the moment, and the jacking device jacks the cylindrical battery core upwards once again; the mechanical arm puts the full-lug current collector into a second through hole (11) on the top plate (10), and the full-lug current collector is subjected to rectification and positioning;
fourthly, the workbench (a) rotates again to enable the limiting plate (2) to enter the next station; the limiting plate (2) is jacked up by the lifting mechanism b, and the positioning teeth (1) always keep a clamping state on the cylindrical battery cell at the moment;
and fifthly, after the full-lug current collector in the top plate (10) is abutted against the welding pressing plate at the top, welding the fan-shaped hollow part of the welding pressing plate by a laser welding gun.
8. The welding method adopting the liftable flexible tool according to claim 8, characterized in that: the positions of the welding pressure plate and the laser welding gun are always kept unchanged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210041214.8A CN114260606B (en) | 2022-01-14 | 2022-01-14 | Liftable flexible tool and welding method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210041214.8A CN114260606B (en) | 2022-01-14 | 2022-01-14 | Liftable flexible tool and welding method |
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| CN114260606A true CN114260606A (en) | 2022-04-01 |
| CN114260606B CN114260606B (en) | 2023-09-08 |
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| CN115781074A (en) * | 2022-12-29 | 2023-03-14 | 楚能新能源股份有限公司 | Current collecting plate welding fixture and current collecting plate welding equipment |
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| CN115781074A (en) * | 2022-12-29 | 2023-03-14 | 楚能新能源股份有限公司 | Current collecting plate welding fixture and current collecting plate welding equipment |
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| Publication number | Publication date |
|---|---|
| CN114260606B (en) | 2023-09-08 |
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