CN214866398U - Pole lug folding device of battery pole piece and pole piece forming equipment - Google Patents

Abstract

The utility model discloses a pole ear folding device of a battery pole piece and pole piece forming equipment; the utility model provides a battery pole piece roll over utmost point ear device is including installing big board, the big board facial make-up of installation is equipped with following mechanism: the first clamping mechanism is used for clamping the pole pieces conveyed along the left and right directions; the folding mechanism is used for folding the free end of the pole piece clamped by the first clamping mechanism in a left-right direction; and the tab folding mechanism is used for bending the free end of the folded pole piece into a tab. The utility model discloses have and replace current utmost point ear welded structure through bending out utmost point ear on the pole piece, improved the production efficiency and the quality of utmost point ear.

Description

Pole lug folding device of battery pole piece and pole piece forming equipment

Technical Field

The utility model belongs to the technical field of battery production facility technique and specifically relates to a battery pole piece roll over utmost point ear device and pole piece former.

Background

In recent years, with the rapid development of the lithium battery industry, lithium batteries are widely used in portable electronic devices. The lithium battery has the excellent and unique properties of high energy density, light weight, flexible structure and the like. With the further expansion of the application range, the performance requirements of consumers on high-end digital lithium batteries are continuously improved, so that the requirements of manufacturers on the production process and the process of the lithium batteries are more and more strict.

Currently, in a lithium battery, a pole piece and a tab are two independent bodies, and in the actual production process, the tab which is cut to be qualified is welded and fixed on the pole piece by generally adopting an ultrasonic welding technology, so that the pole piece and the tab are electrically connected; however, this manufacturing process suffers from at least three distinct disadvantages: firstly, burrs are easy to appear when the tabs are cut, and the burrs can pierce a diaphragm of the lithium battery to cause short circuit of the lithium battery; secondly, a desoldering condition may exist between the tab and the pole piece, so that the rolled battery cell cannot be used, and the pole piece and the diaphragm are wasted; thirdly, in the production process of the battery core, tab discharging and other process action equipment need to be additionally configured, so that the manufacturing and production cost is increased.

Thus, the prior art is subject to improvement and advancement.

SUMMERY OF THE UTILITY MODEL

The utility model provides a technical problem to the problem among the above-mentioned prior art, provide a battery pole piece roll over utmost point ear device and pole piece former, the purpose is the shaping play utmost point ear on the pole piece.

As a first aspect of the present invention, the present invention adopts a technical solution as follows:

the utility model provides a battery pole piece roll over utmost point ear device, is including installing big board, the big board facial make-up of installation is equipped with following mechanism: the first clamping mechanism is used for clamping the pole pieces conveyed along the left and right directions; the folding mechanism is used for folding the free end of the pole piece clamped by the first clamping mechanism in a left-right direction; and the tab folding mechanism is used for bending the free end of the folded pole piece into a tab.

As a further elaboration of the above technical solution:

in the above technical solution, the first clamping mechanism includes a first mounting seat mounted on the mounting large plate; the first power source is arranged on the first mounting seat and drives the lower pressing plate to move along the left and right directions; the lower pressing plate is provided with a first adsorption component for adsorbing the pole piece; the second power source is arranged on the first mounting seat and drives the upper pressure plate to move up and down; the upper pressure plate is positioned above one end of the lower pressure plate, which is far away from the free end of the pole piece, and the bottom of the upper pressure plate is provided with a buffer component matched with the pole piece.

In the technical scheme, the device also comprises a tabletting mechanism; the tablet pressing mechanism comprises a three-axis moving mechanism; the three-axis moving mechanism is arranged on the large mounting plate and used for driving the pressure plate assembly to downwards press the free end of the pole piece clamped by the first clamping mechanism; the pressing piece assembly comprises a folding pressing piece matched with the folding mechanism and/or a tab folding pressing piece matched with the tab folding mechanism.

In the technical scheme, the folding mechanism comprises a third power source and a fourth power source, and the third power source and the fourth power source are sequentially used for driving the folding component to move up and down and move left and right so as to fold the pole pieces.

In the technical scheme, the bottom of the doubling part is rotatably provided with a rolling part which is in rolling fit with the free end of the pole piece.

In the above technical solution, the folding part has a second adsorption part and a second clamping mechanism, which are used to adsorb the pole pieces stacked on the folding part and press the pole pieces down onto the folding part in sequence.

In the technical scheme, the cutting device further comprises a cutting mechanism; the cutting mechanism comprises a second mounting seat arranged on the mounting large plate; the fifth power source is arranged on the second mounting seat and drives the cutter to move up and down; wherein the length direction of the cutting edge of the cutter forms an angle of 45 degrees with the left and right directions; and the end part of the doubling part close to the first clamping mechanism is provided with a cutting groove matched with the cutter.

In the technical scheme, the device further comprises a gluing mechanism; and the adhesive tape sticking mechanism is arranged on the large installation plate and is used for bonding the end parts, adjacent to the pole pieces, clamped by the first clamping mechanism and the second clamping mechanism.

In the above technical solution, the tab folding mechanism includes a third mounting seat mounted on the mounting large plate; the sixth power source is arranged on the third mounting seat and drives the first bearing platform to move up and down; the seventh power source is arranged on the first bearing platform and drives the tab folding component to move horizontally; the moving direction of the tab folding component forms an angle of 45 degrees with the left and right directions; the free end of the tab folding component is provided with a vertical end face matched with the pole piece; the vertical end face forms an angle of 45 degrees with the left and right direction.

As a second aspect of the present invention, the present invention adopts a technical solution as follows:

a battery pole piece forming device comprises the pole piece folding device of the battery pole piece.

Compared with the prior art, the beneficial effects of the utility model reside in that:

1. the utility model adopts the tab folding device to replace the welding tab device in the prior pole piece forming device, and because the tab is formed by the pole piece in an integrated way, the tab is not required to be provided with an additional tab unreeling mechanism, a tab cutting mechanism, a tab taking and placing mechanism, a tab welding mechanism and the like; therefore, the utility model discloses reduce manufacturing production cost, saved occupation space.

2. The tab is integrally formed on the pole piece through the tab folding mechanism, so that the hidden trouble of tab desoldering in the prior art is solved, and the quality and the safety performance of the battery cell are improved.

3. Because the free end of the pole piece is obtained by cutting, the free end of the pole piece is folded by the folding mechanism and then folded into the pole lug by the pole lug folding mechanism, so that the thickness of the pole lug is increased to increase the strength of the pole lug, the cutting part of the pole piece, namely the free end, is wrapped and cannot be exposed, and the hidden trouble that the diaphragm is pierced by burrs easily generated when the pole lug is cut in the prior art to cause short circuit of the lithium battery is solved.

Drawings

Fig. 1 is a schematic diagram of the change of the pole piece state during the operation of the present invention, wherein a, b, c, d, and e are the initial state of the pole piece, the cutting state of the pole piece, the folding state of the pole piece, the forming state of the pole ear, and the state of the adhesive tape;

fig. 2 is a perspective view of a tab folding device for a battery pole piece of the present invention;

fig. 3 is a schematic structural view of a first clamping mechanism of the present invention;

fig. 4 is a schematic structural view of the folding mechanism of the present invention;

FIG. 5 is an enlarged view of a portion of FIG. 4 at F;

fig. 6 is a schematic structural view of the tab folding mechanism of the present invention;

fig. 7 is a schematic structural view of a sheeting mechanism of the present invention;

fig. 8 is a schematic structural view of a cutting mechanism of the present invention;

fig. 9 is a schematic structural view of the gluing mechanism of the present invention;

fig. 10 is a schematic structural diagram of the battery pole piece forming apparatus of the present invention.

The reference numbers in the figures are respectively:

1. mounting a large plate;

2. a first clamping mechanism; 21. a first mounting seat; 22. a first power source; 23. a lower pressing plate; 24. a first adsorption member; 25. a second power source; 26. an upper pressure plate; 27. a buffer member;

3. a folding mechanism; 31. a fourth mounting seat; 311. a guide sleeve; 312. a guide post; 32. a third power source; 33. a second platform; 34. a fourth power source; 35 a third platform; 36. folding the component in half; 361. a long hole; 362. a rolling member; 363. cutting off the groove; 37. a second adsorption member; 38. a second clamping mechanism; 381. an eighth power source; 382. a belt pressing plate;

4. a tab folding mechanism; 41. a third mounting seat; 42. a sixth power source; 43. a first bearing platform; 44. a seventh power source; 45. a tab folding component; 451. a vertical end face;

5. a tablet pressing mechanism; 51. a three-axis moving mechanism; 511. a sixth mounting seat; 512. a ninth power source; 513. a fourth bearing platform; 514. a tenth power source; 515. a fifth bearing platform; 516. an eleventh power source; 52. a tabletting assembly; 521. folding and tabletting; 522. folding the tab and pressing the tab; 5221. straight chamfering; 523. a tablet mounting plate;

6. a cutting mechanism; 61. a second mounting seat; 62. a fifth power source; 63. a cutter; 64. a twelfth power source; 65. a sixth bearing platform;

7. a gluing mechanism; 71. a fifth mounting seat; 72. the adhesive tape unwinding assembly; 73. a third clamping assembly; 74. a traction manipulator; 75. a tape cutting assembly; 76. taping the assembly;

8. battery pole piece forming equipment; 81. a frame; 82. an unwinding assembly; 83. a pole piece powder removing and iron removing device; 831. a brush powder assembly; 832. a magnetic attraction component; 84. a pole piece driving device; 85. a laser rubber cutting device; 86. a pole piece collecting device;

9. pole pieces; 91. end portions to be folded; 92. a tab; 93. an adhesive tape.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The embodiments described by referring to the drawings are exemplary and intended to be used for explaining the present application and are not to be construed as limiting the present application. In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and thus should not be considered limiting. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise. In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral connections; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate. In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.

Example 1

Referring to fig. 1 and 2, a tab folding device for a battery pole piece includes a large mounting plate 1, and the large mounting plate 1 is provided with the following mechanisms: the first clamping mechanism 2 is used for clamping the pole piece 9 which is conveyed from left to right; the folding mechanism 3 is used for folding the free end of the pole piece 9 clamped by the first clamping mechanism 2 leftwards; and the tab folding mechanism 4 is used for bending the free end of the folded pole piece 9 into a tab 92.

The working principle is as follows: firstly, the clamping mechanism 2 clamps the pole piece 9 in transmission, so that the free end, namely the right end, of the pole piece 9 is exposed; then, the folding mechanism 3 folds the free end, namely the right end, of the pole piece 9 leftwards to form a double-layer end part 91 to be folded; and finally, the tab folding mechanism 4 folds the end part 91 to be folded backwards to form a tab 92, so that the tab 92 and the pole piece 9 form an included angle of 90 degrees in the horizontal plane.

Firstly, the utility model adopts the tab folding mechanism 4 to replace the existing pole piece welding mechanism, so that the tab 92 is integrally formed on the pole piece 91, a tab coil is not needed to be configured, and the processing procedures of cutting the tab 92, welding the tab 92 and the like are not needed, thereby simplifying the processing technology of the pole piece 9, eliminating the risk brought by the burr of the tab 92 and reducing the production cost of the battery; and then effectively improve the utility model discloses uniformity, the reliability of production electric core to the realization is to the improvement of electric core security.

Secondly, the utility model adopts the folding mechanism 3 to fold the free end of the pole piece and then bend the free end into the tab 92, so that the thickness of the tab 92 is doubled and the strength of the tab 92 is enhanced; in addition, because the tip of the free end of pole piece 9 is lived by the parcel, avoided the free end of pole piece 9 to decide and the influence of the burr that forms to utmost point ear 92, improved the security and the yields of product.

With continued reference to fig. 3, the first clamping mechanism 2 includes a first mounting seat 21 mounted on the mounting plate 1; the first power source 22 is arranged on the first mounting seat 21 and drives the lower pressure plate 23 to move along the left-right direction; the lower pressure plate 23 is provided with a first adsorption part 24; the second power source 25 is arranged on the first mounting seat 21 and drives the upper pressure plate 26 to move up and down; wherein, the upper pressing plate 26 is positioned above one end of the lower pressing plate 23 far away from the free end of the pole piece 9.

The lower part of the upper pressure plate 26 is provided with a buffer member 27 for preventing the upper pressure plate 26 from crushing the pole piece; in this embodiment, the buffering member 27 is a soft rubber strip with elasticity.

Wherein, the first power source 22 and the second power source 25 can be any one of a cylinder, a linear motor, a ball screw type linear module, and a synchronous belt type linear module.

The first adsorption part 24 is a vacuum adsorption device, and is embedded in the upper portion of the lower pressing plate 26, and a through hole on the upper surface of the lower pressing plate 26 extends out of a suction nozzle for sucking the pole piece 9 stacked on the upper surface of the lower pressing plate 26 tightly, so that the pole piece 9 is prevented from being displaced or warped locally in the operation process, and the yield of the product is improved.

The working principle of the first clamping mechanism 2 is explained and explained below with reference to the working flow:

firstly, the second power source 25 drives the upper pressure plate 26 to move upwards, so that the pole piece 9 can be conveyed from left to right; then, the pole piece 9 stops moving, the second power source 25 drives the upper pressure plate 26 to move downwards, the upper pressure plate 26 presses the pole piece 9 downwards onto the lower pressure plate 23, and at the moment, the first adsorption part 24 adsorbs the pole piece 9 on the upper surface of the lower pressure plate 23.

With continuing reference to fig. 2 and 7, the present invention further includes a sheeting mechanism 5; the tablet pressing mechanism 5 comprises a three-axis moving mechanism 51; the three-axis moving mechanism 51 is used for driving the pressure plate assembly 52 to press the pole piece 9 superposed on the end part of the lower pressure plate 23 close to the free end of the pole piece 9; the pressing plate assembly 52 comprises a folding pressing plate 521 matched with the folding mechanism 3 and/or a tab pressing plate 522 matched with the tab folding mechanism 4.

Specifically, the three-axis moving mechanism 51 includes a sixth mounting seat 511 mounted on the mounting large plate 1; a ninth power source 512 is arranged on the sixth mounting seat 511 and is used for driving the fourth bearing platform 513 to move left and right; the fourth platform 513 is slidably mounted on the sixth mounting seat 511; a tenth power source 514 is installed on the fourth supporting platform 513 and is used for driving the fifth supporting platform 515 to move back and forth; an eleventh power source 516 is installed on the fifth bearing platform 515 and is used for driving the pressure plate assembly to move up and down; the three-axis moving mechanism 51 enables the tablet pressing mechanism 5 to move freely, so as to realize avoiding position during the operation of other mechanisms of the utility model.

The ninth power source 512, the tenth power source 514, and the eleventh power source 516 are cylinders, and a linear motor, a ball screw linear module, a synchronous belt linear module, and the like may be used.

In order to ensure the connection rigidity and the sliding stability of each mounting seat, the fourth supporting platform 513 is slidably mounted on the sixth mounting seat 511 through a first guide rail pair; the fifth platform 515 is slidably mounted on the fourth platform 513 via a second pair of rails.

Specifically, the sheeting assembly 52 includes a sheeting mounting plate 523 slidably mounted on the fifth platform 515 via a third rail pair; the pole piece pressing plate 523 and the eleventh power source 516 are driven to slide up and down; the folded pressing sheets 521 and the folded tab pressing sheets 522 are arranged at the front ends of the pole piece pressing plates 523 in the left-right direction.

Since the folding mechanism 3 folds the free end of the pole piece 9 at 180 degrees, the folding pressing sheet 521 is long.

Since the tab mechanism 4 is configured to fold the end 91 of the pole piece 9 backward, the right front end of the tab pressing piece 522 has a straight chamfer 5221.

The working principle of the tablet pressing mechanism 5 is explained and explained below with reference to the working flow:

firstly, the three-axis moving mechanism 51 drives the pole piece pressing plate 523 to move, so that the doubling pressing plate 521 is pressed down to the position close to the right end of the pole piece 9; then, the folding mechanism 3 lifts the right end of the pole piece 9 from bottom to top and pushes the right end to the left, so that the right end of the pole piece 9 is pressed against the upper surface of the folding pressing sheet 521, and a double-layer end to be folded 91 is obtained; then, the three-axis moving mechanism 51 drives the folding pressing plate 521 to move forward and retreat out of the end portion 91 to be folded, and then continues to drive the pole piece pressing plate 523 to move, so that the folding pole tab pressing plate 522 is pressed down to the position, close to the end portion 91 to be folded, of the pole piece 9; then, the tab folding mechanism 4 pushes up the end 91 to be folded from bottom to top and horizontally pushes the end to be folded backward, so that the end 91 to be folded is folded backward along the straight chamfer 5221 of the tab folding pressing piece 522.

The utility model discloses a sheeting mechanism 5 is fixed and spacing pole piece 9 at the pole piece fifty percent discount and the in-process of buckling, has improved the precision of pole piece 9 fifty percent discount and bending, and then has improved the security and the yields of product.

With continued reference to fig. 3, the folding mechanism 3 includes a fourth mounting seat 31 screwed and fixed on the mounting plate 1; a third power source 32 is arranged on the fourth mounting seat 31; the third power source 3 drives the second bearing platform 33 to move up and down; the fourth power source 34 is fixedly arranged on the second bearing platform 33 and drives the third bearing platform 35 to move left and right; the fixed end of the folding member 36 is provided with a long hole 361, and is mounted on the third bearing stand 35 so as to be adjustable in the front-rear direction.

The third power source 32 and the fourth power source 34 may be any one of a cylinder, a linear motor, a ball screw type linear module, and a synchronous belt type linear module.

Wherein, in order to guarantee the installation rigidity of each part and the stability when sliding: a guide sleeve 311 is arranged on the fourth mounting seat 31, the guide sleeve 311 is in sliding fit with a guide post 312, and the second bearing platform 33 is fixedly connected with the guide post 312; the third bearing platform 35 is slidably mounted on the second bearing platform 33 through a fourth guide rail pair.

The working principle of the folding mechanism 3 is explained below with reference to the working flow:

firstly, in an initial state, the right end part of the pole piece 9 clamped on the first clamping mechanism 2 is positioned on the left end part of the half-folding part 36, the third power source 32 drives the half-folding part 36 to move upwards, and the right end part of the pole piece 9 is pushed to be folded upwards in the process that the half-folding part 36 moves upwards; then, when the bottom end surface of the folding part 36 is slightly higher than the upper surface of the pole piece 9, the third power source 32 stops working, the fourth power source 34 drives the folding part 36 to horizontally move leftwards, so as to push the right end part of the pole piece 9 which is turned upwards to turn leftwards, and finally the right end part of the pole piece 9 clamped on the first clamping mechanism 2 is turned leftwards by 180 degrees and is adhered to the upper surface of the folding pressing sheet 521 to form an end part 91 to be folded; finally, the folding pressing sheet 521 moves back and forth to be separated from the end 91 to be folded of the pole piece 9, and the third power source 32 and the fourth power source 34 drive the folding part 36 to return.

With continued reference to fig. 5, a rolling member 362 which is in rolling fit with the free end of the pole piece 9 is rotatably mounted at the bottom of the half-folding member 36; wherein the rolling member 262 may rotate one of a roller or a bearing; preferably, an installation groove is formed in the left lower portion of the half-folded part 36, and a plurality of ball bearings are rotatably installed in the installation groove as the rolling part 362; a plurality of ball bearings are coaxially arranged, and the bottom end surface of each ball bearing is lower than that of the folding part 36; when the folding part 36 moves leftwards, the rolling friction is generated between the ball bearing and the pole piece 9 to prevent the surface of the pole piece 9 from being scratched, and finally, the safety and the yield of the product are improved.

With continued reference to fig. 5, the half-folding member 36 has a second suction member 37 and a second clamping mechanism 38 for sequentially sucking the pole pieces 9 stacked on the half-folding member 36 and pressing down the pole pieces 9 onto the half-folding member 36.

The second adsorption part 37 is a vacuum adsorption device, and is embedded in the upper part of the folding part 37, and a through hole on the upper surface of the folding part 37 extends out of a suction nozzle for sucking the pole piece 9 stacked on the upper surface of the folding part 36, so that the pole piece 9 is prevented from being displaced or warped in the operation process, and the yield of the product is improved.

The second clamping mechanism 38 includes an eighth power source 381, in this embodiment: the eighth power source 381 is a cylinder, a cylinder body thereof is fixed to the folding member 36, and a piston rod thereof is provided with a belt pressing plate 382; the belt pressing plate 382 is located above one end of the folding member 36 opposite to the first clamping mechanism 2, and is driven by the eighth power source 381 to move up and down.

The operation principle of the second adsorption part 37 and the second clamping mechanism 38 will be explained below with reference to the operation flow:

firstly, the eighth power source 381 drives the belt pressing plate 382 to move upwards, and at this time, the pole piece 9 can be transferred between the belt pressing plate 382 and the doubling part 36 from left to right; then, when the pole piece 9 stops being conveyed, the eighth power source 381 drives the belt pressing plate 382 to move downward, so that the belt pressing plate 382 presses the pole piece 9 downward to the upper surface of the folding part 36; then, the second suction member 37 sucks the pole piece 9 tightly against the upper surface of the half-folded member 36.

With continued reference to fig. 2 and 8, the present invention further includes a cutting mechanism 6; the cutting mechanism 6 comprises a second mounting seat 61 arranged on the mounting large plate 1; a twelfth power source 64 is mounted on the second mounting seat 61; the twelfth power source 64 drives the sixth bearing platform 65 which is slidably installed on the second installation seat 61 to move left and right; the fifth power source 62 is mounted on the sixth bearing platform 65 and drives the cutter 63 to move up and down; and the end of the doubling part 36 close to the first clamping mechanism 1 is provided with a cutting groove 363 matched with the cutting knife 63.

The fifth power source 62 and the twelfth power source 64 may be any one of a cylinder, a linear motor, a ball screw type linear module, and a synchronous belt type linear module.

The working principle of the cutting mechanism 6 is explained below with reference to the working flow: firstly, when the pole piece 9 is adsorbed on the upper surface of the folding part 36, the fifth power source 62 and the twelfth power source 64 form two-axis linkage and drive the cutter 63 to move downwards into the cutting groove 363, so as to cut off the pole piece 9; then, the fifth power source 62 and the twelfth power source 64 form two-axis linkage and drive the cutter 63 to reset, so as to avoid the position for the operation of other working parts.

With continued reference to fig. 1 and 5, the length direction of the cutting edge of the cutting knife 63 forms an angle of 45 ° with the left-right direction; correspondingly, the length direction of the cutting slot 363 is at an angle of 45 ° with the left-right direction.

It can be understood that: if the length direction of the cutting edge of the cutting mechanism 63 forms an angle of 90 degrees with the left-right direction, the right end part of the pole piece 9 clamped by the first clamping mechanism 2 after cutting has a cutting surface forming an angle of 90 degrees with the left-right direction; therefore, after the right end of the pole piece is folded in half by 180 degrees towards the left by the folding part 36, the right end of the upper layer of the end part 91 to be folded is provided with a cutting surface which forms an angle of 90 degrees with the left-right direction; finally, the tab folding mechanism 4 folds the end 91 to be folded back into a tab forming an angle of 90 ° with the left-right direction, at this time, the exposed tab 92 is of a two-layer structure, and the joint of the tab 92 and the pole piece 9 is of a four-layer structure.

And in the utility model discloses in: because the length direction and the left and right directions of the blade of cutter 63 are 45 degrees, cut off the back the right-hand member portion of first fixture 2 centre gripping pole piece 9 has the cutting plane that is 45 degrees with the left and right directions, so fifty percent discount part 36 with the right-hand member portion of pole piece 9 180 fifty percent discount left back, treat that the upper right-hand member of book end 91 has the cutting plane that becomes 45 degrees with the left and right directions, finally, book utmost point ear mechanism 4 will treat that book end 91 turns over along this cutting plane backward and becomes to become 90 degrees with the left and right directions, and at this moment, exposed utmost point ear 92 is two-layer equally, but utmost point ear 92 is only the three-layer with the junction of pole piece 9, and then makes the utility model discloses improved the quality of final fashioned electric core on the basis of reducing utmost point ear 92 and the junction thickness of pole piece 9.

With continuing reference to fig. 2 and 9, the present invention further includes a tape attaching mechanism 7; the rubberizing mechanism 7 is arranged on the installation large plate 1 and used for bonding the end parts, adjacent to the pole pieces, clamped by the first clamping mechanism 2 and the second clamping mechanism 38.

Specifically, the adhesive tape sticking mechanisms 7 are arranged in two groups, and are arranged on the upper side and the lower side of a transmission path of the pole piece 9 in a mirror image manner; each adjusting mechanism 7 comprises a fifth mounting base 71 fixed on the large mounting plate, and a tape unwinding assembly 72 for unwinding a tape 93 is mounted on the fifth mounting base 71; along the unwinding direction of the adhesive tape 93, a third clamping assembly 73 for clamping the adhesive tape 93 and a traction manipulator 74 for clamping and traction the free end of the adhesive tape 93 at the third clamping assembly 73 are sequentially arranged on the fifth mounting seat 71; a tape cutting assembly 75 and a taping assembly 76 are further provided between the third clamping assembly 73 and the drawing robot 74.

The working principle of the rubberizing mechanism 7 is explained below with reference to the working flow:

first, the pulling robot 74 grips the free end, i.e., the right end, of the adhesive tape 93, and pulls the adhesive tape 93 to move rightward; then, the third clamping assembly 73 clamps the tape 93; then, the tape sticking assembly 76 moves up/down and then moves to the position of the tape 93 between the third clamping assembly 73 and the traction manipulator 74, and the tape 93 is sucked tightly by adopting a vacuum adsorption mode; then, the tape cutting assembly 75 cuts the tape 93 from between the third clamping assembly 73 and the iron tape assembly 76 and resets the tape; finally, the traction manipulator 74 releases the adhesive tape 93 and resets, and the adhesive tape sticking assembly 76 continues to move upwards/downwards to stick the adhesive tape 93 adsorbed thereon to the end part of the pole piece adjacent to the pole piece clamped by the first clamping mechanism 2 and the second clamping mechanism 38.

Further, it should be noted that: the utility model discloses in, two sets of rubberizing mechanism 7 is not synchronous working, its during operation: after the gluing operation is completed by the gluing mechanism 7 on the upper side, the lower pressing plate 23 of the first clamping mechanism 2 and the doubling component 36 move relatively to complete the avoiding action, and then the gluing mechanism 7 on the lower side completes the gluing operation upwards.

With continued reference to fig. 6, the tab folding mechanism 4 includes a third mounting seat 41 mounted on the mounting large plate 1; a sixth power source 42 is mounted on the third mounting base 41 and drives the first bearing platform 43 to move up and down; a seventh power source 44 is installed on the first bearing platform 43 and drives the tab folding component 45 to move horizontally; wherein, the moving direction of the tab folding component 45 forms an angle of 45 degrees with the left-right direction; the free end of the folded tab part 45 is provided with a vertical end face 451 matched with the pole piece 9; the vertical end surface 451 makes an angle of 45 ° with the left-right direction.

The seventh power source 44 and the sixth power source 42 may be any one of a cylinder, a linear motor, a ball screw type linear module, and a synchronous belt type linear module.

The working principle of the tab folding mechanism 4 is explained below with reference to the working process:

firstly, in an initial state, the tab folding component 45 is right below the end part 91 to be folded of the pole piece 9, and a cut surface of an upper layer of the end part 91 to be folded, which forms an angle of 45 degrees with the left-right direction, and the vertical end surface 451 are located in the same vertical plane, at this time, the sixth power source 42 drives the tab folding component 45 to move upwards to push the end part 91 to be folded to turn upwards along the cut surface; then, the seventh power source 44 drives the tab folding component 45 to horizontally move leftwards and rightwards, at this time, the tab folding component 45 flattens the end portion 91 to be folded, which is turned upwards, backwards, and then bends the end portion 91 to be folded backwards into the tab 92.

Of course, in order to avoid the surface wear of the tab 92, the bottom of the tab folding part 45 should also be provided with a bearing cooperating with the tab 92.

Example 2

With continued reference to fig. 10, a battery pole piece forming apparatus 8 includes a tab folding device of a battery pole piece as described in embodiment 1.

The tab folding device of the battery pole piece described in embodiment 1 may be directly used to replace the tab welding device in the existing battery pole piece forming equipment 8.

In addition, the structure of the battery pole piece forming device 8 can also be as follows: the battery pole piece forming equipment 8 comprises a rack 81; the frame 81 is provided with a pole piece unreeling device 82 for unreeling the pole pieces 9; along the conveying direction of the pole piece 9, a pole piece powder removing and iron removing device 83, a pole lug folding device of the battery pole piece and a pole piece traction device 84 are sequentially arranged on the frame 81 and are sequentially used for removing powder and iron from the pole piece, forming a pole lug on the pole piece and drawing the pole piece to advance; between the battery pole piece turning device and the pole piece traction device 84, the frame 81 is further provided with a laser adhesive tape cutting device 85 and a pole piece collecting device 86, which are sequentially used for cutting off the adhesive tape 93 on the pole piece 9 between the second clamping mechanism 38 and the pole piece traction device 84, so that a part of the tail end of the pole piece 9 forms an independent pole piece unit with a pole lug 92, and the pole piece unit with the cut adhesive tape 93 is collected.

The pole piece unreeling device 82 comprises a servo motor arranged on the rack 1, an air expansion shaft is arranged on an output shaft of the servo motor, a pole piece coiled material is coiled on the air expansion shaft, and the air expansion shaft is driven by the servo motor to rotate so as to unreel a pole piece.

The pole piece powder removing and iron removing device 83 includes two sets of brush powder assemblies 831 and two sets of magnetic attraction components 832. The two groups of the brush powder assemblies 831 respectively remove dust to the upper surface and the lower surface of the pole piece 9, and meanwhile, the two groups of the brush powder assemblies 831 are also provided with negative pressure parts, and the brush powder assemblies 931 can absorb the dust brushed from the upper surface and the lower surface of the pole piece 9 through the negative pressure parts. The two sets of magnetic parts 831 are respectively used for adsorbing iron chips on the upper and lower surfaces of the pole piece 9.

The pole piece collecting device 86 includes a conveyor belt assembly for conveying the pole pieces and a stacking assembly for stacking the pole pieces.

The above is not intended to limit the technical scope of the present invention, and any modifications, equivalent changes and modifications made to the above embodiments according to the technical spirit of the present invention are all within the scope of the technical solution of the present invention.

Claims (10)

1. The utility model provides a battery pole piece roll over utmost point ear device which characterized in that, is including the big board of installation, the big board facial make-up of installation is equipped with following mechanism:

the first clamping mechanism is used for clamping the pole pieces conveyed along the left and right directions;

the folding mechanism is used for folding the free end of the pole piece clamped by the first clamping mechanism in a left-right direction;

and the tab folding mechanism is used for bending the free end of the folded pole piece into a tab.

2. The tab folding device for the battery pole piece as claimed in claim 1, wherein the first clamping mechanism comprises a first mounting seat mounted on the mounting plate; the first power source is arranged on the first mounting seat and drives the lower pressing plate to move along the left and right directions; the lower pressing plate is provided with a first adsorption component for adsorbing the pole piece; the second power source is arranged on the first mounting seat and drives the upper pressure plate to move up and down; the upper pressure plate is positioned above one end of the lower pressure plate, which is far away from the free end of the pole piece, and the bottom of the upper pressure plate is provided with a buffer component matched with the pole piece.

3. The tab folding device for the battery pole piece is characterized by further comprising a pressing mechanism; the tablet pressing mechanism comprises a three-axis moving mechanism; the three-axis moving mechanism is arranged on the large mounting plate and used for driving the pressure plate assembly to downwards press the free end of the pole piece clamped by the first clamping mechanism; the pressing piece assembly comprises a folding pressing piece matched with the folding mechanism and/or a tab folding pressing piece matched with the tab folding mechanism.

4. The pole lug folding device for the battery pole piece is characterized in that the folding mechanism comprises a third power source and a fourth power source which are sequentially used for driving the folding component to move up and down and move left and right so as to fold the pole piece in half.

5. The pole piece folding device of claim 4, wherein the bottom of the folding part is rotatably provided with a rolling part which is in rolling fit with the free end of the pole piece.

6. The tab folding device for battery pole pieces as claimed in claim 5, wherein the folding member has a second adsorption member and a second clamping mechanism for sequentially adsorbing the pole pieces stacked on the folding member and pressing the pole pieces down onto the folding member.

7. The tab folding device for the battery pole piece is characterized by further comprising a cutting mechanism; the cutting mechanism comprises a second mounting seat arranged on the mounting large plate; the fifth power source is arranged on the second mounting seat and drives the cutter to move up and down;

wherein the length direction of the cutting edge of the cutter forms an angle of 45 degrees with the left and right directions;

and the end part of the doubling part close to the first clamping mechanism is provided with a cutting groove matched with the cutter.

8. The tab folding device for the battery pole piece according to claim 6, further comprising a rubberizing mechanism; and the adhesive tape sticking mechanism is arranged on the large installation plate and is used for bonding the end parts, adjacent to the pole pieces, clamped by the first clamping mechanism and the second clamping mechanism.

9. The tab folding device for the battery pole piece according to any one of claims 1 to 8, wherein the tab folding mechanism comprises a third mounting seat mounted on the mounting large plate; the sixth power source is arranged on the third mounting seat and drives the first bearing platform to move up and down; the seventh power source is arranged on the first bearing platform and drives the tab folding component to move horizontally;

the moving direction of the tab folding component forms an angle of 45 degrees with the left and right directions;

the free end of the folded tab component is provided with a vertical end face matched with the pole piece; the vertical end face forms an angle of 45 degrees with the left and right direction.

10. A battery pole piece forming device, which is characterized by comprising a pole piece folding device of a battery pole piece as claimed in any one of claims 1 to 9.

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