CN216250857U - Large-winding-diameter winding machine - Google Patents

Abstract

The utility model discloses a large-winding-diameter winding machine, which comprises a battery cell grabbing mechanism and a winding needle mechanism positioned in front of the battery cell grabbing mechanism; the needle rolling mechanism comprises a mounting seat and a needle rolling assembly arranged on the mounting seat, the needle rolling assembly comprises a first inner needle, a second inner needle, a first outer needle sleeved to the first inner needle and a second outer needle sleeved to the second inner needle, and a needle rolling is formed between the first outer needle and the second outer needle; the outer wall of one side of the first outer needle facing the second outer needle or the outer wall of one side of the second outer needle facing the first outer needle is provided with an elastic air bag for clamping a base material; the electric core grabbing mechanism further comprises a plurality of mechanical arms used for clamping the electric core, the mechanical arms are arranged on the rear side of the rack, and the mechanical arms are located in the same vertical plane and are evenly distributed along the same circumference. The utility model can realize the high-efficiency clamping of the base material, can fully fix the battery cell and is convenient for blanking.

Description

Large-winding-diameter winding machine

Technical Field

The utility model relates to the field of lithium battery cell manufacturing, in particular to a large-winding-diameter winding machine.

Background

The current large-winding-diameter winding machine mainly comprises a winding needle mechanism for winding and forming an electric core and an electric core grabbing mechanism for realizing electric core blanking.

Before winding and forming the battery core, the winding needle mechanism usually firstly penetrates an inner ring diaphragm (namely a base material) of the battery core through a gap between a first inner needle and a second inner needle of the battery core, the inner ring diaphragm is clamped tightly by the first inner needle and the second inner needle, then winding is carried out, the inner ring diaphragm cannot be clamped effectively in the mode, the tightness of the inner ring diaphragm is poor, and the production requirement of the battery core cannot be met.

The mechanical arm of the cell grabbing mechanism for clamping the cell to realize blanking is usually one. When unloading, through the annular electric core of a manipulator centre gripping circle, will not be abundant fix electric core, the difficult scheduling problem of needle withdrawal is difficult to the book needle mechanism easily appears, and the unloading is inconvenient.

Accordingly, there is a need for an improved large winding diameter winder.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model provides the large-winding-diameter winding machine which can realize high-efficiency clamping of a base material, can fully fix a battery cell and is convenient to discharge.

The technical scheme adopted by the utility model for solving the technical problems is as follows:

a large-winding-diameter winding machine comprises a battery cell grabbing mechanism and a winding needle mechanism positioned in front of the battery cell grabbing mechanism; the needle rolling mechanism comprises a mounting seat and a needle rolling assembly arranged on the mounting seat, the needle rolling assembly comprises a first inner needle, a second inner needle, a first outer needle sleeved on the first inner needle and a second outer needle sleeved on the second inner needle, the first inner needle and the second inner needle are oppositely arranged, and a needle rolling is formed between the first outer needle and the second outer needle; the battery cell grabbing mechanism comprises a rack; the first outer needle and the second outer needle are oppositely arranged, two clamping spaces for clamping a substrate are formed between the first outer needle and the second outer needle, the two clamping spaces are respectively positioned at two sides of the first inner needle and the second inner needle, an elastic air bag for clamping the substrate is arranged on the outer wall of one side, facing the second outer needle, of the first outer needle or the outer wall of one side, facing the first outer needle, of the second outer needle, and the elastic air bag corresponds to one clamping space; the battery cell grabbing mechanism further comprises a plurality of manipulators for clamping the battery cell, the manipulators are arranged on the rear side of the rack, and the plurality of manipulators are located in the same vertical plane and are uniformly distributed along the same circumference; the winding needle is close to the front side of the rack and opposite to the plurality of mechanical hands, and the winding needle mechanism can rotate relative to the plurality of mechanical hands and can move towards the direction close to or away from the plurality of mechanical hands so as to move the winding needle from the front side of the rack into the rack or from the interior of the rack back out of the front side of the rack; the manipulator comprises a front driving mechanism, a rear driving mechanism and a discharging claw mechanism, wherein the front driving mechanism and the rear driving mechanism are mounted at the top end of the front driving mechanism and the rear driving mechanism and are used for clamping the battery cell, and the front driving mechanism and the rear driving mechanism can drive the discharging claw mechanism to move in the front-rear direction.

As a preferable technical scheme, an elastic air bag is arranged on the outer wall of one side, facing the second outer needle, of the first outer needle; the outer wall of one side of the first outer needle facing the second outer needle is provided with an installation position extending along the axial direction of the first outer needle, and the installation position is internally provided with the elastic air bag.

Preferably, the first outer needle and the second outer needle are both semicircular in cross section, and a winding needle having a circular cross section is formed between the first outer needle and the second outer needle.

As a preferable technical scheme, the circumferential outer walls of the first outer needle and the second outer needle are respectively provided with a plurality of concave positions, and the concave positions extend along the axial direction of the winding needle; the plurality of concave positions correspond to the plurality of mechanical arms one to one.

As a preferred technical solution, two of the plurality of manipulators are respectively located at two sides of the center of the circle where the plurality of manipulators are located and are symmetrical with respect to the center of the circle, and among the remaining manipulators, a part of the manipulators are located above the center of the circle where the plurality of manipulators are located, and the other part of the manipulators are located below the center of the circle where the plurality of manipulators are located.

According to the preferable technical scheme, the blanking claw mechanism comprises a cylinder fixing plate, a blanking claw cylinder, a first blanking claw and a second blanking claw; the cylinder fixing plate and the blanking claw cylinder are sequentially installed at the top end of the front-back driving mechanism, an installation plate is installed at one end, close to the front side of the rack, of the cylinder fixing plate, the first blanking claw is installed on the installation plate, and the second blanking claw is installed at one end, close to the front side of the rack, of the blanking claw cylinder; the first blanking claw and the second blanking claw are oppositely arranged; the blanking claw cylinder can drive the second blanking claw to move towards the direction close to or far away from the first blanking claw; the first blanking claws of the manipulators correspond to the concave positions of the needle winding mechanism one by one.

As a preferable technical scheme, the first blanking claw comprises a first connecting rod and a first sleeve, one end of the first connecting rod is mounted on the mounting plate, and the other end of the first connecting rod is sleeved with the first sleeve; the second blanking claw comprises a second connecting rod and a second external member, one end of the second connecting rod is installed at one end, close to the front side of the rack, of the blanking claw cylinder, and the second external member is sleeved at the other end of the second connecting rod; the cross-sectional shapes of the first sleeve piece and the second sleeve piece are both circular.

As a preferred technical scheme, two manipulators are positioned at two sides of the circle center of the circle where the manipulators are positioned, wherein a first blanking claw and a second blanking claw of the two manipulators are oppositely arranged left and right, and the first blanking claw is close to the circle center; the first blanking claw and the second blanking claw of the manipulator are arranged in a vertically opposite mode, and the first blanking claw is positioned below the second blanking claw; and the first blanking claw and the second blanking claw of the manipulator are arranged oppositely from top to bottom, and the first blanking claw is positioned above the second blanking claw.

As a preferred technical scheme, the mounting seat comprises a first fixing block and a second fixing block which are spliced together, a first inner cavity is formed between the first fixing block and the second fixing block, the first inner cavity is located at one end of the mounting seat, a first end of the first inner needle is arranged in the first inner cavity and fixed to the first fixing block, and a first end of the second inner needle is arranged in the first inner cavity and fixed to the second fixing block.

As a preferred technical scheme, the needle rolling mechanism further comprises an air cylinder, a second inner cavity is formed between the first fixing block and the second fixing block, the second inner cavity is located at one end, far away from the first inner cavity, of the mounting seat, the air cylinder is arranged in the second inner cavity and fixed to the second fixing block, and the air cylinder can drive the first fixing block to move towards a direction close to or far away from the second fixing block, so that the first inner needle is close to or far away from the second inner needle, and the first outer needle is driven to be close to or far away from the second outer needle.

The utility model has the beneficial effects that: the elastic air bag can realize high-efficiency clamping of the base material, and the elastic air bag has elasticity, so that even if slight abrasion occurs, the clamping force of the elastic air bag cannot be influenced, the elastic air bag has long service life, reduces the cost, has high production efficiency and meets the production requirement of a battery cell; meanwhile, the battery cell is clamped by the plurality of mechanical arms uniformly distributed along the same circumference, so that the battery cell can be fully fixed, the problems that the needle withdrawing of the needle winding mechanism is difficult and the like due to the fact that the battery cell is excessively attached to the winding needle of the needle winding mechanism are solved, and discharging is facilitated.

Drawings

The utility model is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic structural diagram of a large-winding-diameter winding machine according to an embodiment of the present invention;

FIG. 2 is a side view of the large coil diameter winder of FIG. 1;

FIG. 3 is a schematic structural diagram of a winding needle mechanism of the large winding diameter winding machine shown in FIG. 1;

FIG. 4 is a schematic front view of the needle winding mechanism shown in FIG. 3;

FIG. 5 is a schematic view of the needle winding mechanism of FIG. 3 with the first outer needle and the second outer needle removed;

FIG. 6 is an exploded view of the needle winding mechanism of FIG. 3 with the first outer needle and the second outer needle removed;

FIG. 7 is a schematic front view of a first outer needle of the needle winding mechanism of FIG. 3;

FIG. 8 is a schematic front view of a second outer needle of the needle winding mechanism shown in FIG. 3;

FIG. 9 is a schematic diagram of the structure of the elastic bladder of the needle winding mechanism shown in FIG. 3;

fig. 10 is a schematic structural diagram of a cell grabbing mechanism of the large-winding-diameter winding machine shown in fig. 1;

fig. 11 is a schematic structural view of the cell grasping mechanism shown in fig. 10 with the up-down driving mechanism, the tray, and the support member removed;

fig. 12 is a structural schematic diagram of the assembled first transverse driving mechanism and the assembled robot of the cell gripping mechanism shown in fig. 10;

fig. 13 is an exploded view of the second lateral drive mechanism, the first vertical drive mechanism, and the two robots of the cell grasping mechanism shown in fig. 10;

fig. 14 is an exploded schematic view of the third transverse driving mechanism, the second vertical driving mechanism and the two manipulators of the cell grasping mechanism shown in fig. 10.

Detailed Description

The conception, the specific structure, and the technical effects produced by the present invention will be clearly and completely described below in conjunction with the embodiments and the accompanying drawings to fully understand the objects, the features, and the effects of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and those skilled in the art can obtain other embodiments without inventive effort based on the embodiments of the present invention, and all embodiments are within the protection scope of the present invention. In addition, all the connection/connection relations referred to in the patent do not mean that the components are directly connected, but mean that a better connection structure can be formed by adding or reducing connection auxiliary components according to specific implementation conditions. All technical characteristics in the utility model can be interactively combined on the premise of not conflicting with each other.

Referring to fig. 1 and fig. 2, a large winding diameter winding machine according to an embodiment of the present invention includes a winding needle mechanism 100 for winding a battery cell and a battery cell grabbing mechanism 200 for realizing battery cell blanking. The winding needle mechanism 100 is located in front of the cell grasping mechanism 200 and is disposed in a fixing frame 500. The rear side of the fixing frame 500 has an accommodating space 502, and the winding needle 102 of the winding needle mechanism 100 is accommodated in the accommodating space 502. The winding needle 102 is opposed to the plurality of manipulators 220 of the cell gripping mechanism 200.

The needle winding mechanism 100 is rotatable with respect to the plurality of manipulators 220 of the cell gripping mechanism 200, and is movable in a direction approaching or separating from the plurality of manipulators 220 to move the winding needle 102 of the needle winding mechanism 100 from the front side of the rack 210 into the rack 210 or from the interior of the rack 210 back out of the front side of the rack 210, i.e., back into the accommodating space 502, thereby achieving needle withdrawal.

The rotation and movement of the needle winding mechanism 100 are realized by the reel set structure 600. As shown in fig. 2, the reel set structure 600 includes a connection shaft 610, a motor 620, a belt transmission mechanism 630, and a cylinder 640. The motor 620 and the cylinder 640 are mounted to the front side of the fixing frame 500. The connecting shaft 610 is located in the fixing frame 500, one end of the connecting shaft 610 is installed to the needle winding mechanism 100, and the other end is installed to the air cylinder 640. The belt transmission mechanism 630 is connected between the connecting shaft 610 and the motor 620, and the motor 620 can drive the connecting shaft 610 to rotate through the belt transmission mechanism 630, so that the needle winding mechanism 100 can be driven to rotate through the connecting shaft 610, and the needle winding mechanism 100 can realize winding action. The needle winding mechanism 100 of the present invention is set to rotate in the counterclockwise direction, but may rotate in the direction of the hand, and may be selected according to the actual situation. The cylinder 640 can drive the winding needle mechanism 100 to move towards the direction close to the manipulators 220 or move towards the direction far away from the manipulators 220 through the connecting shaft 610, so that the battery cells are clamped by the manipulators 220 of the battery cell grabbing mechanism 200, and blanking of the battery cells on the winding needle 102 is realized.

Referring to fig. 3 to 6, the needle winding mechanism 100 includes a mounting base 10, a needle winding assembly provided to the mounting base 10, and a driving device provided to the mounting base 10. The drive means is a pneumatic cylinder 40 (see fig. 6).

The needle winding assembly includes a first inner needle 22, a second inner needle 24, a first outer needle 26 sleeved to the first inner needle 22, and a second outer needle 28 sleeved to the second inner needle 24. The first inner needle 22 and the second inner needle 24 are arranged oppositely. The first outer needle 26 and the second outer needle 28 form the aforementioned winding needle 102 therebetween. The first outer needle 26 and the second outer needle 28 are oppositely arranged, and two clamping spaces 29 for clamping a substrate are formed between the first outer needle and the second outer needle, wherein the substrate is an inner ring diaphragm of a battery cell. The two holding spaces 29 are located on both sides of the first inner needle 22 and the second inner needle 24, respectively. The two holding spaces 29 of the present embodiment are respectively located above and below the first inner needle 22 and the second inner needle 24.

In this embodiment, the side of the first outer needle 26 facing the second outer needle 28 and the side of the second outer needle 28 facing the first outer needle 26 are respectively formed with mounting slots 264 and 284, as shown in fig. 7 and 8, the first outer needle 26 is sleeved to the first inner needle 22 through the mounting slot 264, and the second outer needle 28 is sleeved to the second inner needle 24 through the mounting slot 284, so that the installation is convenient.

The outer wall of the first outer needle 26 on the side facing the second outer needle 28 is provided with an elastic air bag 30 for clamping the substrate, the elastic air bag 30 corresponds to one of the clamping spaces 29, the elastic air bag 30 in the embodiment corresponds to the clamping space 29 positioned above, and is close to one end of the clamping space 29 far away from the first inner needle 22 and the second inner needle 24. The flexible bladder 30 is adapted to be connected to an external gas source via a port 32 therein to permit inflation of the bladder to the interior thereof and to permit clamping of the substrate upon inflation thereof. According to the utility model, the elastic air bag 30 is arranged on the first outer needle 26, so that the base material can be clamped efficiently, the clamping force of the base material cannot be influenced even if slight abrasion occurs due to elasticity, the service life is long, the cost is reduced, the production efficiency is high, and the production requirement of a battery cell is met.

In other embodiments, the outer wall of the second outer needle 28 facing the first outer needle 26 may be provided with an elastic balloon 30 for clamping the substrate. The technical effect can be achieved by the scheme.

In this embodiment, as shown in fig. 9, the elastic airbag 30 has a rectangular parallelepiped shape, and the interface 32 of the elastic airbag 30 is close to the mounting seat 10. It will be appreciated that in other embodiments, the resilient bladder 30 may be of other shapes.

The elastic bladder 30 is preferably made of nitrile rubber, but may be made of other materials.

In this embodiment, the outer wall of the first outer needle 26 facing the second outer needle 28 is provided with a mounting position extending along the axial direction of the first outer needle 26, and the elastic air bag 30 is arranged in the mounting position.

The cross-sectional shapes of the first outer needle 26 and the second outer needle 28 are both semicircular and concentric, a winding needle 102 with a circular cross-sectional shape is formed between the first outer needle 26 and the second outer needle 28, and the tension fluctuation of the circular winding needle 102 is small when the battery core is wound and molded.

The circumferential outer walls of the first outer needle 26 and the second outer needle 28 are respectively provided with a plurality of concave positions 262, 282 arranged at intervals, and the concave positions 262, 282 extend along the axial direction of the winding needle 102. The concave positions 262 and 282 are arranged, so that the manipulator 220 of the cell grabbing mechanism 200 can conveniently take down the cells which are formed by winding the first outer needle 26 and the second outer needle 28 and subjected to the rubberizing process, and the blanking is convenient. The number of the concave portions 262 and 282 of the first outer needle 26 and the second outer needle 28 is the same as that of the manipulators 220 of the cell grasping mechanism 200.

Furthermore, the first outer needle 26 and the second outer needle 28 are both hollow, which can reduce the weight, save the material, and reduce the manufacturing cost.

The mounting seat 10 includes a first fixing block 12 and a second fixing block 14 that are spliced together, as shown in fig. 5 and 6, a first inner cavity and a second inner cavity are formed between the first fixing block 12 and the second fixing block 14, and the first inner cavity and the second inner cavity are respectively located at two ends of the mounting seat 10.

In this embodiment, a first end of a first inner needle 22 is disposed into the first lumen and secured to the first mounting block 12, and a first end of a second inner needle 24 is disposed into the first lumen and secured to the second mounting block 14.

The second end of the first inner needle 22 and the second end of the second inner needle 24 are respectively provided with a protruding extension 222, 242. When the winding pin 102 moves into the frame 210 of the cell gripping mechanism 200, the protruding portions 222 and 242 of the first and second inner pins 22 and 24 may be engaged with the supporting ends of the supporting members 340 (see fig. 10) of the cell gripping mechanism 200 to support the winding pin mechanism 100 via the supporting members 340. The protruding parts 222, 242 in this embodiment are arc-shaped, the protruding part 222 of the first inner needle 22 and the protruding part 242 of the second inner needle 24 are oppositely arranged, and the protruding part 222 of the first inner needle 22 and the protruding part 242 of the second inner needle 24 are concentric.

The cylinder 40 is disposed into the second inner cavity and fixed to the second fixing block 14. The cylinder 40 can drive the first fixed block 12 to move toward or away from the second fixed block 14, so that the first inner needle 22 approaches or moves away from the second inner needle 24, and the first outer needle 26 is driven to approach or move away from the second outer needle 28. The first outer needle 26 moves towards the direction far away from the second outer needle 28, so that the circumference of the winding needle 102 formed between the first outer needle 26 and the second outer needle 28 can be increased, and the accurate size of the battery cell after winding forming can be ensured; by moving the first outer needle 26 toward the direction close to the second outer needle 28, the circumference of the winding needle 102 formed between the first outer needle 26 and the second outer needle 28 can be reduced to facilitate needle withdrawing and blanking of the battery cell.

The first inner needle 22 of the needle winding mechanism 100 of the utility model is driven by the air cylinder 40, has simple structure, small volume and low cost, and can simplify the structure of the needle winding mechanism 100 and reduce the cost. The piston rod of the air cylinder 40 is connected with the first fixing block 12 to drive the first fixing block 12 to move towards or away from the second fixing block 14.

The mounting seat 10 further comprises a mounting member 50, the mounting member 50 is located at one end of the mounting seat 10 far away from the first inner cavity and is fixed to the second fixing block 14, and the mounting member 50 is provided with a mounting hole 52. One end of the connecting shaft 610 of the reel group structure 600 is installed in the mounting hole 52, so that the reel needle mechanism 100 can be driven by the reel group structure 600 to rotate relative to the plurality of manipulators 220 to achieve a winding action, and can move towards a direction close to or away from the plurality of manipulators 220, so as to facilitate blanking of the battery cell.

Preferably, the mounting member 50 is a flange.

Referring to fig. 10 and 11, the cell gripping mechanism 200 includes the rack 210 and the plurality of manipulators 220. A plurality of robot arms 220 are provided to the rear side of the rack 210. The plurality of manipulators 220 are located in the same vertical plane and are evenly distributed along the same circumference. The plurality of manipulators 220 are opposite to the winding needle 102 of the winding needle mechanism 100, and after the circular battery cell is wound and formed through the winding needle 102 and a rubberizing process is performed, the battery cell can be clamped simultaneously through the plurality of manipulators 220, so that blanking is facilitated. According to the utility model, the battery cell is clamped simultaneously by the plurality of manipulators 220 uniformly distributed along the same circumference, so that the battery cell can be sufficiently fixed, the problems that the needle withdrawing of the needle winding mechanism 100 is difficult and the like due to the fact that the battery cell is excessively attached to the winding needle 102 are solved, and the blanking is convenient.

The plurality of manipulators 220 are in one-to-one correspondence with the notches 262, 282 of the winding needle 102. Among the plurality of manipulators 220, two of the manipulators 220 are respectively located at both sides of and symmetrical with respect to the circle center of the circumference where the plurality of manipulators 220 are located, and among the remaining manipulators 220, a part of the manipulators 220 are located above the circle center of the circumference where the plurality of manipulators 220 are located, and the other part of the manipulators 220 are located below the circle center of the circumference where the plurality of manipulators 220 are located.

In this embodiment, the number of the robot arms 220 is six, and the number of the concave portions 262 and 282 of the winding pin 102 is also six. Of the six manipulators 220, two manipulators 220 are respectively located at two sides of and symmetrical with respect to the center of the circle where the six manipulators 220 are located, two manipulators 220 are respectively located above and symmetrical with respect to the center of the circle where the six manipulators 220 are located, and the remaining two manipulators 220 are respectively located below and symmetrical with respect to the center of the circle where the six manipulators 220 are located. Similarly, two of the six concave locations 262, 282 are located at two sides of and symmetrical with respect to the center of the circle where the winding needle 102 is located, two of the concave locations 262, 282 are located above and symmetrical with respect to the center of the circle where the winding needle 102 is located, and the remaining two concave locations 262, 282 are located below and symmetrical with respect to the center of the circle where the winding needle 102 is located.

In other embodiments, the number of the manipulators 220 may be other, for example, four, five, eight, etc., and the number of the manipulators 220 may be set according to actual conditions.

The rack 210 includes a rectangular bottom frame 2102 and two first mounting frames, substrates 2106, mounted to the rear side of the bottom frame 2102. The two first mounting frames are respectively close to two ends of the bottom frame 2102, and the substrate 2106 is located between the two first mounting frames. The two first mounts are symmetrical about the base plate 2106.

The first mounting bracket includes a vertical post 2103 mounted to the rear side of the bottom frame 2102, and a lateral post 2104 mounted to the top of the vertical post 2103. Vertical column 2103 and base plate 2106 both extend in the axial direction of frame 210. The transverse column 2104 extends in a transverse direction (i.e., a lengthwise direction) of the frame 210.

The two manipulators 220 located at two sides of the circle center of the circle where the six manipulators 220 are located are respectively installed at the top ends of the first transverse driving mechanisms 260, the two first transverse driving mechanisms 260 are oppositely arranged left and right, and the two first transverse driving mechanisms 260 can drive the two manipulators 220 to synchronously move in the opposite direction or move away from each other along the left and right directions. Two first lateral drive mechanisms 260 are mounted to the top ends of the lateral posts 2104 of the two first mounting brackets, respectively, by way of mounting plates 2602 (see fig. 11).

As shown in fig. 12, the robot 220 includes a front-rear driving mechanism 230 and a feeding claw mechanism 240. Unloading claw mechanism 240 is used for centre gripping electric core. The front and rear driving mechanisms 230 are mounted to the top ends of the corresponding first lateral driving mechanisms 260 through the fixing plates 2302. The feed claw mechanism 240 is mounted to the top end of the front and rear driving mechanism 230, and the front and rear driving mechanism 230 can drive the feed claw mechanism 240 to move in the front and rear direction. The first transverse driving mechanism 260 and the front-back driving mechanism 230 are both conventional driving mechanisms, the first transverse driving mechanism 260 is a linear module, and the front-back driving mechanism 230 is a cylinder driving mechanism.

The blanking claw mechanism 240 comprises a cylinder fixing plate 2402, a blanking claw cylinder 2404, a first blanking claw 2406 and a second blanking claw 2408. The cylinder fixing plate 2402 and the feeding claw cylinder 2404 are sequentially installed on the top end of the front and rear driving mechanism 230. An installation plate 2405 is installed at one end, close to the front side of the rack 210, of the cylinder fixing plate 2402, a first blanking claw 2406 is installed on the installation plate 2405, a second blanking claw 2408 is installed at one end, close to the front side of the rack 210, of the blanking claw cylinder 2404, the first blanking claw 2406 and the second blanking claw 2408 are arranged in a left-right opposite mode, and the blanking claw cylinder 2404 can drive the second blanking claw 2408 to move towards the direction close to or away from the first blanking claw 2406. The first blanking claws 2406 of the two manipulators 220 positioned at both sides of the center of the circle where the six manipulators 220 are positioned are close to the center of the circle.

The first blanking claws 2406 of the two manipulators 220 positioned at both sides of the center of the circle where the six manipulators 220 are positioned correspond to the two concave positions 262 and 282 at both sides of the center of the circle where the winding needle 102 is positioned one by one. After the battery cell is wound on the winding needle 102 to be molded and the rubberizing process is performed, the front and rear driving mechanisms 230 drive the discharging claw mechanism 240 to move towards the front side of the rack 210 until the first discharging claw 2406 extends into the corresponding concave position of the winding needle 102, so that the first discharging claw 2406 is located at the inner side of the battery cell, at this time, the second discharging claw 2408 is located at the outer side of the battery cell, and then the discharging claw cylinder 2404 drives the second discharging claw 2408 to move towards the direction close to the first discharging claw 2406 to clamp the battery cell.

Preferably, the first blanking jaw 2406 includes a first connection rod 2406a and a first sleeve 2406b, and one end of the first connection rod 2406a is mounted to the mounting plate 2405 and the other end is sleeved with the first sleeve 2406 b. The cross-sectional shape of the first sleeve 2406b is circular. The second feeding claw 2408 comprises a second connecting rod 2408a and a second sleeve 2408b, one end of the second connecting rod 2408a is installed at one end of the feeding claw cylinder 2404 close to the front side of the frame 210, and the other end of the second connecting rod is sleeved with the second sleeve 2408 b. The cross-sectional shape of the second sleeve 2408b is circular. In practical application, the first sleeve member 2406b mainly extends into the corresponding concave position of the winding needle 102, and then the first sleeve member 2406b and the second sleeve member 2408b clamp the battery cell. The cross-sectional shapes of the first sleeve member 2406b and the second sleeve member 2408b are round, so that damage to the battery cell can be avoided.

The two manipulators 220 located above the center of the circle where the six manipulators 220 are located are both mounted at the bottom end of the second transverse driving mechanism 270, and the second transverse driving mechanism 270 can drive the two manipulators 220 to synchronously move towards or away from each other along the left-right direction. The second horizontal driving mechanism 270 is installed on the first vertical driving mechanism 290, the first vertical driving mechanism 290 is installed on the upper end of the base plate 2106, and the first vertical driving mechanism 290 can drive the second horizontal driving mechanism 270 to move in the up-down direction, so that the two manipulators 220 located above the center of the circle where the six manipulators 220 are located can be driven to move in the up-down direction by the second horizontal driving mechanism 270.

Referring to fig. 13, the second horizontal driving mechanism 270 and the first vertical driving mechanism 290 are both existing driving mechanisms, the first vertical driving mechanism 290 is a linear module, and the second horizontal driving mechanism 270 is composed of a motor, a bottom plate 2701, a screw rod 2702 mounted to the top end of the bottom plate 2701, two sets of slide rails 2703 mounted to the top end of the bottom plate 2701, two sliding plates 2704, and the like. The second lateral drive mechanism 270 is mounted to the first vertical drive mechanism 290 by its base plate 2701. The two sets of slide rails 2703 are respectively close to the two ends of the bottom plate 2701, and the two slide plates 2704 are respectively installed at the top ends of the two sets of slide rails 2703. Two ends of the screw 2702 are respectively connected with the bottom ends of the two sliding plates 2704 through screw nuts, so that the two sliding plates 2704 can synchronously move towards or away from each other along the left and right direction under the driving of the screw 2702. Two ends of each sliding plate 2704 are respectively provided with two connecting brackets 2706, the bottom ends of the two connecting brackets 2706 respectively penetrate through the bottom plate 2701 and are positioned below the second transverse driving mechanism 270, and the two manipulators 220 positioned above the circle center of the circle where the six manipulators 220 are positioned are respectively arranged at the bottom ends of the two corresponding connecting brackets 2706.

The two manipulators 220 located above the circle center of the circle where the six manipulators 220 are located and the two manipulators 220 located at the two sides of the circle center of the circle where the six manipulators 220 are located are basically the same in structure and working principle, except that the front and rear driving mechanisms 230 of the manipulators 220 are installed on one sides, close to the circle center, of the bottom ends of the corresponding two connecting supports 2706 through the fixing plate 2302, so that the two manipulators 220 can be driven to synchronously move towards or away from each other along the left and right direction through the two sliding plates 2704. The first blanking claw 2406 and the second blanking claw 2408 of the manipulator 220 are arranged oppositely up and down, and the first blanking claw 2406 is positioned below the second blanking claw 2408. The first blanking claws 2406 of the two manipulators 220 positioned above the center of the circle of the six manipulators 220 correspond to the two concave positions 262 and 282 above the center of the circle of the winding needle 102 one by one.

The two manipulators 220 located below the center of the circle where the six manipulators 220 are located are both mounted on top of the third transverse driving mechanism 280, and the third transverse driving mechanism 280 can drive the two manipulators 220 to synchronously move towards or away from each other along the left-right direction. The second lateral drive mechanism 270 and the third lateral drive mechanism 280 are disposed opposite one another in the vertical direction. The third transverse driving mechanism 280 is installed on the second vertical driving mechanism 310, the second vertical driving mechanism 310 is installed at the lower end of the base plate 2106, and the second vertical driving mechanism 310 can drive the third transverse driving mechanism 280 to move in the up-down direction, so that the two manipulators 220 located below the circle center of the circle where the six manipulators 220 are located can be driven to move in the up-down direction through the third transverse driving mechanism 280. The first vertical driving mechanism 290 and the second vertical driving mechanism 310 are disposed opposite to each other in the vertical direction.

Referring to fig. 14, the third horizontal driving mechanism 280 and the second vertical driving mechanism 310 are both existing driving mechanisms, the second vertical driving mechanism 310 is a linear module, and the third horizontal driving mechanism 280 is composed of a motor, a bottom plate 2801, a screw 2802 mounted on the top end of the bottom plate 2801, two sets of slide rails 2803 mounted on the top end of the bottom plate 2801, two slide plates 2804, and the like. The third lateral drive mechanism 280 is mounted to the second vertical drive mechanism 310 by its base plate 2801. The two sets of slide rails 2803 are respectively adjacent to both ends of the bottom plate 2801, and the two slide plates 2804 are respectively mounted to the top ends of the two sets of slide rails 2803. Both ends of the lead screw 2802 are connected to the bottom ends of the two slide plates 2804 by lead screw nuts, respectively, so that the two slide plates 2804 can be driven by the lead screw 2802 to move synchronously toward or away from each other in the left-right direction. Two robots 220 located below the center of the circle on which the six robots 220 are located are respectively mounted to the top ends of the corresponding slide plates 2804.

The two manipulators 220 located below the circle center of the circle where the six manipulators 220 are located and the two manipulators 220 located on both sides of the circle center of the circle where the six manipulators 220 are located have basically the same structure and working principle, except that the front and rear driving mechanisms 230 of the manipulators 220 are mounted on the top ends of the corresponding sliding plates 2804 through the fixing plates 2302, so that the two sliding plates 2804 can drive the two manipulators 220 to synchronously move in the left and right directions towards or away from each other. The first blanking claw 2406 and the second blanking claw 2408 of the manipulator 220 are arranged oppositely up and down, and the first blanking claw 2406 is positioned above the second blanking claw 2408. The first blanking claws 2406 of the two manipulators 220 positioned below the center of the circle of the six manipulators 220 correspond to the two concave positions 262 and 282 below the center of the circle of the winding needle 102 one by one.

Further, as shown in fig. 10, two second mounting brackets 2107 are mounted on the front side of the bottom frame 2102, and the second mounting brackets 2107 are of a column structure and extend in the axial direction of the rack 210. Two second mounting brackets 2107 are provided near each end of the bottom frame 2102. The battery cell grabbing mechanism 200 further includes two upper and lower driving mechanisms 330 and a tray 320 for placing the battery cells, the two upper and lower driving mechanisms 330 are respectively installed on one sides of the two second mounting brackets 2107, which are away from each other, two ends of the tray 320 are respectively installed on the two upper and lower driving mechanisms 330 and located on the inner side of the rack 210, and the two upper and lower driving mechanisms 330 can drive the tray 320 to move in the upper and lower directions. When the winding pin 102 moves into the rack 210 from between the two second mounting brackets 2107 (see fig. 1), the tray 320 is located right below the winding pin 102 (the position of the tray 320 in fig. 10 shows a situation after the robot 220 places the battery cell 400 on the tray 320). After the six manipulators 220 clamp the cells, the cells can be placed on the tray 320, so that manual material taking is facilitated.

Further, as shown in fig. 10, a support 340 is installed on the base plate 2106 at a position corresponding to the circle center of the circumference where the six manipulators 220 are located, a support end of the support 340 extends toward the front side of the rack 210, and when the winding needle 102 moves into the rack 210, the support end of the support 340 cooperates with the protruding parts 222, 242 of the first inner needle 22 and the second inner needle 24 to support the winding needle mechanism 100.

The working principle of the utility model is as follows: the needle winding mechanism 100 is driven by the reel set structure 600 to move towards the direction close to the six manipulators 220, so that the needle winding 102 is positioned in the rack 210 (see fig. 1) and right above the tray 320, and the extending parts 222 and 242 of the first inner needle 22 and the second inner needle 24 are matched with the supporting end of the supporting piece 340 to realize the supporting of the needle winding mechanism 100. Then, the cylinder 40 of the winding needle mechanism 100 is driven to make the first inner needle 22 far away from the second inner needle 24, so as to drive the first outer needle 26 far away from the second outer needle 28, so that the circumference of the winding needle 102 is increased to meet the size requirement of the battery cell after winding and forming, and the battery cell is ensured to be accurate in size. Then, the inner ring diaphragm of the battery cell is arranged in the clamping space 29 corresponding to the elastic air bag 30 in a penetrating mode, and the elastic air bag 30 is inflated to clamp the inner ring diaphragm through the elastic air bag 30. And then the winding needle mechanism 100 is driven by the winding shaft group structure 60 to rotate counterclockwise, for example, to realize a winding action, so as to realize winding of the molded battery core.

After the adhesive tape sticking process, each manipulator 220 drives the blanking claw mechanism 240 to move forward through the front and rear driving mechanism 230 thereof, that is, to move toward the front side of the rack 210 until the first blanking claw 2406 of the blanking claw mechanism 240 extends into the corresponding concave position of the winding needle 102, and then the blanking claw cylinder 2404 of the blanking claw mechanism 240 drives the second blanking claw 2408 to move toward the direction close to the first blanking claw 2406 until the battery cell is clamped by the first blanking claw 2406 and the second blanking claw 2408, so that the battery cell is simultaneously clamped by the blanking claw mechanisms 240 of the six manipulators 220, and the circular battery cell can be sufficiently fixed by the six manipulators 220. The elastic bladder 30 is then deflated and the first inner needle 22 is moved closer to the second inner needle 24 by the cylinder 40 of the needle winding mechanism 100, thereby moving the first outer needle 26 closer to the second outer needle 28, so that the circumference of the winding needle 102 is reduced to facilitate needle unwinding. The needle winding mechanism 100 is then driven by the reel set structure 600 to move away from the six robots 220, so that the needle winding 102 moves back out of the front side of the rack 210, i.e. back into the accommodating space 502, and thus, the needle withdrawing is completed.

After the needle withdrawing is completed, the two manipulators 220 located at the two sides of the circle center of the circle where the six manipulators 220 are located are driven by the two first transverse driving mechanisms 260 to synchronously move away from each other to the positions with the maximum distance between the two manipulators, meanwhile, the two manipulators 220 located above the circle center of the circle where the six manipulators 220 are located are driven by the second transverse driving mechanism 270 to synchronously move away from each other to the positions with the maximum distance between the two manipulators, the two manipulators 220 located below the circle center of the circle where the six manipulators 220 are located are driven by the first vertical driving mechanism 290 to downwards move to the positions corresponding to the two manipulators 220 located at the two sides of the circle center of the circle where the six manipulators 220 are located, the two manipulators 220 located below the circle center of the circle where the six manipulators 220 are located are driven by the third transverse driving mechanism 280 to synchronously move towards each other to the positions with the minimum distance between the two manipulators, and the two manipulators 220 located at the two sides of the circle center of the circle where the six manipulators 220 are located are upwards moved by the second vertical driving mechanism 310 In the corresponding position of the manipulator 220, the battery cell is changed from a circular ring shape to a flat ring shape by the driving of the six manipulators 220 in the movement process.

Next, the tray 320 is driven by the two up-and-down driving mechanisms 330 to move upward to a position capable of holding the battery cell, as shown in fig. 10, at this time, the discharging claw cylinders 2404 of the six manipulators 220 drive the second discharging claws 2408 to move away from the first discharging claws 2406 to release the battery cell, then the front-and-back driving mechanisms 230 of the six manipulators 220 drive the discharging claw mechanisms 240 to move backward (i.e., move toward the back side of the rack 210) to move away from the battery cell, at this time, the six manipulators 220 disengage from the battery cell, and the battery cell is placed on the tray 320 (e.g., the flat ring-shaped battery cell 400 shown in fig. 10).

In the above steps, after the six manipulators 220 clamp the electric core, the two manipulators 220 located above the circle center of the circle where the six manipulators 220 are located slide relative to the electric core in the synchronous opposite-moving process, and the two manipulators 220 located below the circle center of the circle where the six manipulators 220 are located slide relative to the electric core in the synchronous opposite-moving process, so that the electric core is not damaged due to the fact that the cross sections of the first sleeve 2406b of the first blanking claw 2406 and the second sleeve 2408b of the second blanking claw 2408 of the manipulators 220 are circular.

While the preferred embodiments of the present invention have been illustrated and described, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims (10)

1. A large-winding-diameter winding machine comprises a battery cell grabbing mechanism and a winding needle mechanism positioned in front of the battery cell grabbing mechanism;

the needle rolling mechanism comprises a mounting seat and a needle rolling assembly arranged on the mounting seat, the needle rolling assembly comprises a first inner needle, a second inner needle, a first outer needle sleeved on the first inner needle and a second outer needle sleeved on the second inner needle, the first inner needle and the second inner needle are oppositely arranged, and a needle rolling is formed between the first outer needle and the second outer needle;

the battery cell grabbing mechanism comprises a rack; it is characterized in that the preparation method is characterized in that,

the first outer needle and the second outer needle are oppositely arranged, two clamping spaces for clamping a substrate are formed between the first outer needle and the second outer needle, the two clamping spaces are respectively positioned at two sides of the first inner needle and the second inner needle, an elastic air bag for clamping the substrate is arranged on the outer wall of one side, facing the second outer needle, of the first outer needle or the outer wall of one side, facing the first outer needle, of the second outer needle, and the elastic air bag corresponds to one clamping space;

the battery cell grabbing mechanism further comprises a plurality of manipulators for clamping the battery cell, the manipulators are arranged on the rear side of the rack, and the plurality of manipulators are located in the same vertical plane and are uniformly distributed along the same circumference; the winding needle is close to the front side of the rack and opposite to the plurality of mechanical hands, and the winding needle mechanism can rotate relative to the plurality of mechanical hands and can move towards the direction close to or away from the plurality of mechanical hands so as to move the winding needle from the front side of the rack into the rack or from the interior of the rack back out of the front side of the rack; the manipulator comprises a front driving mechanism, a rear driving mechanism and a discharging claw mechanism, wherein the front driving mechanism and the rear driving mechanism are mounted at the top end of the front driving mechanism and the rear driving mechanism and are used for clamping the battery cell, and the front driving mechanism and the rear driving mechanism can drive the discharging claw mechanism to move in the front-rear direction.

2. The large-winding-diameter winding machine according to claim 1, wherein the outer wall of one side of the first outer needle facing the second outer needle is provided with an elastic air bag; the outer wall of one side of the first outer needle facing the second outer needle is provided with an installation position extending along the axial direction of the first outer needle, and the installation position is internally provided with the elastic air bag.

3. The large winding diameter winding machine according to claim 1, wherein the first outer needle and the second outer needle each have a semicircular cross-sectional shape, and a winding needle having a circular cross-sectional shape is formed between the first outer needle and the second outer needle.

4. The large winding diameter winding machine according to claim 3, wherein the circumferential outer walls of the first outer needle and the second outer needle are respectively provided with a plurality of concave positions, and the concave positions extend along the axial direction of the winding needle; the plurality of concave positions correspond to the plurality of mechanical arms one to one.

5. The large coil diameter winding machine according to claim 1, wherein two of the manipulators are located on two sides of and symmetrical with respect to the center of the circle on which the manipulators are located, and one of the remaining manipulators is located above the center of the circle on which the manipulators are located, and the other part of the manipulators is located below the center of the circle on which the manipulators are located.

6. The large-winding-diameter winding machine according to claim 5, wherein the blanking claw mechanism comprises a cylinder fixing plate, a blanking claw cylinder, a first blanking claw and a second blanking claw; the cylinder fixing plate and the blanking claw cylinder are sequentially installed at the top end of the front-back driving mechanism, an installation plate is installed at one end, close to the front side of the rack, of the cylinder fixing plate, the first blanking claw is installed on the installation plate, and the second blanking claw is installed at one end, close to the front side of the rack, of the blanking claw cylinder; the first blanking claw and the second blanking claw are oppositely arranged; the blanking claw cylinder can drive the second blanking claw to move towards the direction close to or far away from the first blanking claw; the first blanking claws of the manipulators correspond to the concave positions of the needle winding mechanism one by one.

7. The large winding diameter winding machine according to claim 6, wherein the first blanking claw comprises a first connecting rod and a first sleeve member, one end of the first connecting rod is mounted to the mounting plate, and the other end of the first connecting rod is sleeved with the first sleeve member; the second blanking claw comprises a second connecting rod and a second external member, one end of the second connecting rod is installed at one end, close to the front side of the rack, of the blanking claw cylinder, and the second external member is sleeved at the other end of the second connecting rod; the cross-sectional shapes of the first sleeve piece and the second sleeve piece are both circular.

8. The large-winding-diameter winding machine according to claim 6, wherein the first blanking claw and the second blanking claw of the two manipulators which are positioned on two sides of the center of the circle on which the plurality of manipulators are positioned are oppositely arranged left and right, and the first blanking claw is close to the center of the circle;

the first blanking claw and the second blanking claw of the manipulator are arranged in a vertically opposite mode, and the first blanking claw is positioned below the second blanking claw;

and the first blanking claw and the second blanking claw of the manipulator are arranged oppositely from top to bottom, and the first blanking claw is positioned above the second blanking claw.

9. The large-winding-diameter winding machine according to claim 1, wherein the mounting seat comprises a first fixing block and a second fixing block which are spliced together, a first inner cavity is formed between the first fixing block and the second fixing block, the first inner cavity is located at one end of the mounting seat, the first end of the first inner needle is arranged in the first inner cavity and fixed to the first fixing block, and the first end of the second inner needle is arranged in the first inner cavity and fixed to the second fixing block.

10. The large winding diameter winding machine according to claim 9, wherein the winding needle mechanism further comprises an air cylinder, a second inner cavity is formed between the first fixed block and the second fixed block, the second inner cavity is located at an end of the mounting seat away from the first inner cavity, the air cylinder is disposed in the second inner cavity and fixed to the second fixed block, and the air cylinder can drive the first fixed block to move towards a direction close to or away from the second fixed block, so that the first inner needle is close to or away from the second inner needle, and the first outer needle is driven to be close to or away from the second outer needle.

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