CN110071332A - Swing unreels formula laminating machine and its swing type membrane unwinding device - Google Patents

Abstract

The invention discloses a swing type diaphragm unwinding device, comprising a frame, a swing rod, a hanging shaft assembly for hanging the diaphragm coil material, a first driving device for driving the hanging shaft assembly to rotate, and a swing rod for driving the swing rod to swing around a The center line swings back and forth in an arc-shaped second driving device. The hanging shaft assembly and the first driving device are both arranged on the frame, and the swing rod has a guide channel for the diaphragm that is discharged from the hanging shaft assembly to pass through. The second driving device drives the swing rod to swing back and forth in an arc. The septum threaded through the guide channel is folded back and forth. The invention also discloses a swing unwinding type stacker with a swinging diaphragm unwinding device. In the invention, the second driving device drives the swing rod to swing back and forth in an arc shape, so that the diaphragm passing through the guide channel also has an arc shape. It swings and folds back and forth on the lamination stage, so that the battery pole pieces on the lamination stage are more aligned, the lamination efficiency is improved, and the tension consistency of the separator between the two battery pole pieces is good.

Description

Oscillating unwinding stacker and its oscillating diaphragm unwinding device

technical field

The invention relates to the field of lamination of batteries, in particular to a swing unwinding type lamination machine and a swinging diaphragm unwinding device.

Background technique

With the rapid development of society, due to the shortcomings of light weight, high energy storage density, long service life, low self-discharge and environmental protection, lithium batteries are used in many digital products such as electric bicycles and notebook computers.

As we all know, the manufacturing process of lithium batteries includes the lamination process of battery pole pieces. The lamination process of lithium batteries refers to the stacking of battery positive plates and battery negative plates at intervals, and the battery positive plates and battery negative plates are stacked. A process in which a diaphragm is placed between the sheets. Existing lithium battery cell stacking machines generally include a stacking table for stacking battery pole pieces, a separator discharging device for discharging the separators onto the stacking table, and a separator for driving the stacking table to face the separator. The drive device for the left and right movement of the discharge device. Wherein, the diaphragm discharging device includes a frame, a hanging shaft assembly for hanging the diaphragm coil material, and a rotating device for driving the hanging shaft assembly to rotate and discharge the material. In the actual working process, the rotating device drives the hanging shaft assembly to rotate, thus realizing the discharging of the diaphragm coils mounted on the hanging shaft assembly. The strip-shaped diaphragm to be discharged will pass through the guide shaft pivotally connected to the frame from top to bottom and finally be guided directly above the lamination table, because the strip-shaped diaphragm to be discharged needs to be accurately placed on the two sides. Between the battery pole pieces, many battery pole pieces need to be stacked on the stacking table at the same time, so the separator that is put on the stacking table needs to be folded back and forth to form a "Z"-shaped separator stack. Therefore, the existing practice is to drive the lamination stage to move left and right relative to the diaphragm discharge device through the driving device, so that the diaphragm is folded back and forth. However, this makes the existing lithium battery lamination machine have the following defects: (1) Through the driving device It takes a long time to drive the stacking table to reciprocate relative to the diaphragm discharge device, resulting in low battery stacking efficiency; (2) During the reciprocating movement of the stacking table, the battery pole pieces placed on the stacking table Shaking will also occur and good alignment cannot be achieved; (3) Due to the relative shaking between the battery pole pieces, the tension consistency of the separator located between the two battery pole pieces is not good.

Therefore, an oscillating unwinding lamination machine and its oscillating diaphragm unwinding device with high lamination efficiency, high alignment of battery pole pieces and good diaphragm tension control are urgently needed to overcome the above-mentioned defects.

SUMMARY OF THE INVENTION

An object of the present invention is to provide a swing type diaphragm unwinding device, through which the diaphragm unwinding from the hanging shaft assembly continues to be unloaded in a swinging form, so that the diaphragm can realize itself in a swinging form. It folds back and forth, which makes the tension control of the diaphragm better.

Another object of the present invention is to provide a oscillating unwinding type stacker, the oscillating unwinding type stacking machine has a oscillating diaphragm unwinding device, and the oscillating diaphragm unwinding device makes the material unwinding from the hanging shaft assembly The rear diaphragm continues to be discharged in a swinging form, so that the diaphragm can fold back and forth by itself in a swinging form, so that the swing unwinding lamination machine has high lamination efficiency, high battery pole piece alignment, and makes the folded diaphragm. Good tension consistency.

In order to achieve the above object, the present invention provides a swing type diaphragm unwinding device, which includes a frame, a hanging shaft assembly for hanging the diaphragm coil material, and a first driving device for driving the hanging shaft assembly to rotate, so the The hanging shaft assembly and the first driving device are both arranged on the frame, and the swing diaphragm unwinding device further includes a swing rod and a second swing rod that drives the swing rod to swing back and forth in an arc around a swing centerline. A driving device, the swing rod has a guide channel for passing through the diaphragm unloaded from the hanging shaft assembly, and the second driving device drives the swing rod to swing in a back and forth arc shape. The membrane of the guide channel is folded back and forth.

Preferably, the swing rod is located below the hanging shaft assembly correspondingly, and the diaphragm discharged from the hanging shaft assembly passes downwardly through the guide channel.

Preferably, the swing rod includes a first roller shaft and a second roller shaft that are arranged side by side at intervals and along the direction of the swing centerline, and the space between the first roller shaft and the second roller shaft forms a space between the first roller shaft and the second roller shaft. guide channel.

Preferably, the oscillating diaphragm unwinding device further includes a connecting rod connected between the swing rod and the second driving device, the connecting rod is arranged along the vertical direction of the frame, and the connecting rod is The lower end of the rod is installed on the output end of the second driving device, the swing center line is located on the output end of the second driving device, the swing rod is installed on the upper end of the connecting rod, and the second The driving device drives the swing rod to swing back and forth in an arc above the swing center line through the connecting rod.

The present invention also provides a swing unwinding type stacker, including a machine base and a stacking table for stacking battery pole pieces, and also includes the above-mentioned swing type diaphragm unwinding device, the frame Installed on the machine base, the lamination stage is installed on the frame or the machine base, and the lamination stage is located under the corresponding swing rod, and the second driving device drives the swing rod to wind The swinging center line swings back and forth arc above the lamination table, so that the diaphragm inserted in the guide channel is folded back and forth on the lamination table.

Preferably, the lamination stage includes a stage fixed on the machine base or the frame, a workbench for stacking battery pole pieces, and a workbench for driving the workbench to unwind and unwind the laminations along the swing. A lifting device that lifts and lowers the machine in the up and down direction, the lifting device is installed on the platform, and the worktable is driven by the lifting device to move down a preset distance every time after receiving the battery pole piece.

Preferably, the lamination table further comprises a pressing mechanism for pressing the battery pole pieces or the diaphragm placed on the work table, the pressing mechanism is arranged on the table, and the pressing mechanism is The holding mechanism is located on the peripheral side of the table.

Preferably, the second driving device drives the swing rod to swing symmetrically around the center line of the table top of the workbench.

Preferably, the lowest point of the swing rod during the swinging process is flush with the table surface of the workbench.

Preferably, the swing unwinding type stacker further comprises at least two pole piece supplying devices, the pole piece supplying devices are respectively located on both sides of the lamination table, and the two pole piece supplying devices are in the form of The battery pole pieces are alternately conveyed towards the worktable.

Compared with the prior art, because the present invention is provided with a swing rod and a second drive device connected with the swing rod on the frame, and the second drive device drives the swing rod to swing back and forth around a swing centerline, and the swing The rod has a guide channel for the diaphragm to be discharged from the spool assembly. Therefore, the separator is driven to fold back and forth by the swinging lever after the separator is separated from the hanging shaft assembly. Therefore, the stacking table does not need to translate relative to the swinging diaphragm unwinding device, which makes the battery pole pieces placed on the stacking table unnecessary. It can be better aligned, and the lamination efficiency of the swing unwinding lamination machine can be improved; and the swing rod can be controlled by the second drive device to swing relative to the lamination table in an arc shape, so as to pass through the guide channel The diaphragm also swings in an arc shape, so the diaphragm is pressed by the pressing mechanism at a position closer to the lamination table. Since the stroke of the pressing mechanism to press and hold the diaphragm is reduced, it also makes the swing unwinding type. The lamination efficiency of the lamination machine is improved and the tension consistency of the folded membrane is good.

Description of drawings

FIG. 1 is a schematic three-dimensional structure diagram of the swing unwinding stacker of the present invention.

FIG. 2 is a schematic three-dimensional structure diagram of a swinging diaphragm unwinding device of the swinging unwinding lamination machine of the present invention.

FIG. 3 is a schematic view of the state of the swinging unwinding stacker of the present invention when the swing lever swings.

Fig. 4 is another state schematic diagram of the swinging unwinding stacker of the present invention when the swinging lever is swinging.

Detailed ways

In order to describe in detail the technical content, structural features, and achieved effects of the present invention, detailed descriptions are given below with reference to the embodiments and the accompanying drawings.

Referring to FIGS. 1 to 4 , the oscillating unwinding stacker 200 of the present invention includes a stand 210 , a stacking table 220 for stacking battery pole pieces 300 , and a oscillating diaphragm unwinding device 100 . The frame 10 of the oscillating diaphragm unwinding device 100 is installed on the frame 210; the lamination table 220 is fixed on the frame 210. In other embodiments, the lamination table 220 can also be installed on the frame 10, but not limited to Here, the lamination table 220 is located under the corresponding swing rod 20 of the oscillating diaphragm unwinding device 100, and the second driving device 50 of the oscillating diaphragm unwinding device 100 drives the pendulum rod 20 to be above the lamination table 220 around a swing centerline The back and forth arc swing is performed, so that the diaphragm 400 passing through the guide channel 20a of the pendulum rod 20 also swings in an arc on the lamination table 220, so that the diaphragm 400 is folded back and forth. Therefore, it is avoided to install an additional device for driving the lamination stage 220 to translate, and it is avoided that the battery pole pieces 300 stacked on the lamination stage 220 cannot be aligned due to the movement of the lamination stage 220 . More specifically, as follows:

Please refer to FIG. 1 and FIG. 2 , the stacking table 220 includes a table frame 221 fixed on the machine base 210 or the frame 10 , a work table 222 for stacking the battery pole pieces 300 , and a table 222 for driving the table 222 to swing and unwind A lifter 223 that lifts and lowers the stacker 200 in the vertical direction. The lifting device 223 is installed on the stand 221, and the worktable 222 is driven by the lifting device 223 to move down a preset distance every time after receiving the battery pole piece 300, so it can not only ensure that the manipulator for transporting the battery pole piece 300 is The battery pole pieces 300 are placed on the table 222 at the same level every time, and it can also ensure that the separator 400 is folded at the same level every time. The battery pole pieces 300 are better aligned, and the tension of the separator 400 between the two battery pole pieces 300 is always consistent. Since the movement stroke of the manipulator during the transportation of the battery pole pieces 300 is reduced, the swing unwinding is also improved. The lamination efficiency of the battery pole piece 300 by the type lamination machine 200. Specifically, the lamination table 220 further includes a pressing mechanism 230 for pressing the battery pole pieces 300 or the separators 400 placed on the work table 222 . The pressing mechanism 230 is arranged on the stage 221 and is located in the The peripheral side of the table 222 . It is worth noting that the arrangement of the pressing mechanisms 230 in this embodiment may be such that a plurality of pressing mechanisms 230 are annularly surrounding the vicinity of the workbench 222, or as shown in FIG. The same number of pressing mechanisms 230 are evenly arranged at the first and last ends, but not limited to this.

Please refer to FIG. 1 and FIG. 2 , the swing unwinding stacker 200 further includes at least two pole piece supplying devices 240 , the pole piece supplying devices 240 are respectively located on both sides of the lamination table 220 , and the two pole piece supplying devices 240 The battery pole pieces 300 are conveyed to the work table 222 in an alternating manner. For example, one of the two pole piece feeding devices 240 can be used to place the battery anode pole piece, and the other of the two pole piece feeding device 240 can be used to place the battery cathode pole piece, so through the two pole piece The sheet device alternately transports the pole pieces toward the work table 222, which can make the lamination efficiency of the swing unwinding type stacker 200 of the present invention higher. Preferably, the pole piece supply device 240 includes a positioning table 241 for positioning the battery pole pieces 300 and a pick and place robot arm 242 for transporting the positioned battery pole pieces 300 from the positioning table 241 to the work table 222 , for example. , the pick-and-place robotic arm 242 may be a swing arm swinging at a fixed horizontal height or a robotic arm that can move in a vertical direction and a horizontal direction, but is not limited thereto.

Please refer to FIG. 3 and FIG. 4 , the second driving device 50 drives the swing rod 20 to swing symmetrically around the center line of the table top of the worktable 222 . Therefore, when the swing rod 20 swings, the diaphragm 400 can be driven to move to the worktable 222 . The center line of the table top is evenly and symmetrically laid on the work table 222 , but not limited to this. Specifically, the lowest point of the pendulum rod 20 during the swinging process is flush with the table surface of the workbench 222, so that the pendulum rod 20 can completely lay the diaphragm 400 on the table surface of the workbench 222 within the minimum swing range. The swinging speed of the swing rod 20 can be faster; at the same time, because the pressing mechanism 230 needs to press the battery pole piece 300 or the diaphragm 400 on the table top of the worktable 222, the swing rod 20 is swinging in an arc shape. The lowest point of the 222 is flush with the table surface of the work table 222, so the lowest point of the arcuate movement made by the diaphragm 400 that passes through the guide channel 20a in an arc-shaped swing is flush with the table surface of the work table 222. The mechanism 230 needs to move to the top of the diaphragm 400 and hold the diaphragm 400. When the lowest point of the arcuate movement of the diaphragm 400 is flush with the table surface of the work table 222, the pressing mechanism 230 is in the process of pressing and holding. The stroke of the required movement is also reduced, so the efficiency of pressing is improved, but not limited to this.

Please refer to FIG. 1 to FIG. 4 , a oscillating diaphragm unwinding device 100 of the present invention includes a frame 10 , a swing rod 20 , a hanging shaft assembly 30 for hanging the diaphragm coil material, and a hanging shaft assembly 30 for driving the hanging shaft The first driving device 40 that rotates and the second driving device 50 that drives the swing rod 20 to swing back and forth in an arc around a swing centerline. The hanging shaft assembly 30 and the first driving device 40 are both disposed on the frame 10 , and the pendulum rod 20 is located below the hanging shaft assembly 30 corresponding to the hanging shaft assembly 30 and is provided with a guide channel for the diaphragm 400 discharged from the hanging shaft assembly 30 to pass through. 20a, the second driving device 50 folds the diaphragm 400 passing through the guide channel 20a back and forth during the process of driving the swing rod 20 to swing in a back and forth arc. Specifically, the oscillating diaphragm unwinding device 100 further includes a connecting rod 60 connected between the swing rod 20 and the second driving device 50 ; The lower end is installed on the output end of the second driving device 50 , the swing center line is located on the output end of the second driving device 50 , the swing rod 20 is installed on the upper end of the connecting rod 60 , and the second driving device 50 drives the swing rod through the connecting rod 60 20 Do a back and forth arc swing above the swing centerline. Therefore, during the swinging process, the swing rod 20 forms an upwardly arched arc swinging trajectory, so that the diaphragm 400 can be more closely fitted to the table top of the work table 222 , but it is not limited thereto. Preferably, the swing rod 20 includes a first roller shaft 21 and a second roller shaft 22 that are arranged side by side at intervals and along the direction of the swing centerline, and the space between the first roller shaft 21 and the second roller shaft 22 forms a guide channel 20a. ; The first roller 21 and the second roller 22 are pivotally connected to the connecting rod 60 . As shown in FIG. 3 , when the pendulum rod 20 swings toward one side of the lamination table 220 , the diaphragm 400 is closely attached to the first roller shaft 21 and is restricted by the first roller shaft 21 ; as shown in FIG. 4 , when When the swing rod 20 swings toward the other side of the lamination table 220, the diaphragm 400 is closely attached to the second roller shaft 22 and is restricted by the second roller shaft 22, because the first roller shaft 21 and the second roller shaft 22 are both It is cylindrical, thus preventing the diaphragm 400 from being damaged when the swing rod 20 drives the diaphragm 400 to swing in an arc shape. When the swing rod 20 drives the diaphragm 400 to swing, the diaphragm 400 can not only continue to discharge material through the guide channel 20a, but also can be driven by the swing rod 20 to swing relative to the lamination table 220 in an arc shape, thus realizing the diaphragm 400. fold back and forth. Preferably, the second driving device 50 and the swing rod 20 are respectively disposed on two sides of the frame 10 , and the output end of the second driving device 50 passes through the frame 10 and is connected with the connecting rod 60 . Therefore, the structure of the oscillating diaphragm unwinding device 100 of the present invention can be made more compact, and the volume of the assembled oscillating unwinding stacker 200 can be made smaller, but it is not limited thereto.

The working process of the swing unwinding stacker 200 of the present invention will be further described below in conjunction with the accompanying drawings:

First, the first driving device 40 drives the hanging shaft assembly 30 to rotate to discharge the diaphragm coil material. After the discharged diaphragm coil material passes through the guide channel 20a, the second driving device 50 drives the pendulum rod 20 to move through the connecting rod 60. The arc-shaped swing, at this time, the diaphragm 400 located in the guide channel 20a also swings in an arc-shaped direction under the restriction of the pendulum rod 20, so that a part of the diaphragm 400 to be discharged is laid flat on the table 222, and is pressed The holding mechanism 230 presses the flat diaphragm 400, and then one of the two pole piece supply devices 240 places the battery pole piece 300 on the worktable 222; then the second driving device 50 drives the swing rod through the connecting rod 60. 20 swings in an arc shape in the other direction. At this time, the diaphragm 400 located in the guide channel 20a swings and folds in an arc shape in the other direction under the drive of the pendulum rod 20. 400 is pressed, and then the other one of the two pole piece supply devices 240 places another battery pole piece 300 on the worktable 222, and the above steps are repeated for many times to realize the production of lithium battery cells. It is worth noting that, as shown in FIG. 3 or FIG. 4 , when the second driving device 50 drives the swing rod 20 to swing in an arc shape in one direction, the pick-and-place robotic arms 242 of the two pole piece supply devices 240 both move toward the swing rod 20 . Move in the same direction, and one of the pick-and-place robotic arms 242 is used to place the battery pole pieces 300 on the stacking table 220, and the other pick-and-place robotic arm 242 is now facing the battery pole piece at the matching positioning table 241. Take material.

Compared with the prior art, in the present invention, the rack 10 is provided with a swing rod 20 and a second driving device 50 connected with the swing rod 20, and the second driving device 50 drives the swing rod 20 around a swing centerline. Swing back and forth, and the pendulum rod 20 has a guide channel 20a for the diaphragm 400 discharged from the hanging shaft assembly 30 to pass through. Therefore, the diaphragm 400 is driven to fold back and forth by the swinging rod 20 after being separated from the hanging shaft assembly 30, so that the lamination table 220 does not need to translate relative to the oscillating diaphragm unwinding device 100. The battery pole pieces 300 on the 220 can be better aligned, and the stacking efficiency of the swing unwinding stacker 200 can be improved; and the swing rod 20 can be controlled by the second driving device 50 to arc relative to the stacking table 220 The diaphragm 400 passing through the guide channel 20a also swings in an arc shape, so that the diaphragm 400 is pressed by the pressing mechanism 230 at a position closer to the lamination table 220, because the reduction of the pressing mechanism 230 The stroke of the movement required for pressing and holding the diaphragm 400 also improves the lamination efficiency of the oscillating unwinding stacker 200 and makes the tension consistency of the folded diaphragm 400 good.

What is disclosed above is only a preferred example of the present invention, and its function is to facilitate the understanding and implementation of those skilled in the art. Of course, it cannot limit the scope of rights of the present invention. Equivalent changes still belong to the scope covered by the present invention.

Claims (10)

1. An oscillating diaphragm unwinding device, comprising a frame, a hanging shaft assembly for hanging the diaphragm coil material, and a first driving device for driving the rotation of the hanging shaft assembly, the hanging shaft assembly and the The first driving devices are all arranged on the frame, and it is characterized in that: the swinging diaphragm unwinding device further includes a swing rod and a second driving device that drives the swing rod to swing back and forth in an arc around a swing centerline, The pendulum rod has a guide channel for passing through the diaphragm discharged from the hanging shaft assembly, and the second driving device makes the pendulum rod pass through the guide in the process of driving the pendulum rod to swing back and forth in an arc shape. The septum of the channel folds back and forth. 2. The oscillating diaphragm unwinding device according to claim 1, characterized in that: the swing rod is located below the hanging shaft assembly correspondingly, and the diaphragm unloaded from the hanging shaft assembly is downwardly inserted into the hanging shaft assembly. the guide channel. 3 . The oscillating diaphragm unwinding device according to claim 1 , wherein the swing rod comprises a first roller shaft and a second roller shaft which are arranged side by side at intervals and along the direction of the swing center line. The space between a roller shaft and the second roller shaft forms the guide channel. 4. The oscillating diaphragm unwinding device according to claim 1, characterized in that it further comprises a connecting rod connected between the swing rod and the second driving device, the connecting rod extending along the frame The lower end of the connecting rod is installed on the output end of the second driving device, the swing center line is located on the output end of the second driving device, and the swing rod is installed on the connecting rod and the second driving device drives the swing rod to swing back and forth in an arc above the swing centerline through the connecting rod. 5. A swing unwinding type lamination machine, comprising a machine base and a lamination table for stacking battery pole pieces, characterized in that it also includes a swing type lamination machine according to any one of claims 1-4. Diaphragm unwinding device, the frame is installed on the machine base, the lamination table is installed on the frame or the machine base, and the lamination stage is located under the corresponding swing rod, the first Two driving devices drive the swing rod to swing back and forth above the lamination table around the swing center line, so that the diaphragm inserted in the guide channel is folded back and forth on the lamination table. 6. The oscillating unwinding stacker according to claim 5, wherein the stacking stage comprises a stage fixed on the machine base or the frame, and a workbench for stacking battery pole pieces and a lifting device for driving the table to rise and fall along the vertical direction of the swing unwinding stacker, the lifting device is installed on the table frame, and the table receives battery pole pieces each time Then it is driven by the lifting device to move down a preset distance. 7. The oscillating and unwinding lamination machine according to claim 6, wherein the lamination table further comprises a pressing and holding mechanism for holding the battery pole pieces or the diaphragms placed on the work table, The pressing and holding mechanism is arranged on the stage, and the pressing and holding mechanism is located on the peripheral side of the worktable. 8 . The swing unwinding stacker according to claim 5 , wherein the second driving device drives the swing rod to swing symmetrically around the center line of the table top of the work table. 9 . 9 . The swing unwinding stacker according to claim 8 , wherein the lowest point of the swing rod during the swinging process is flush with the table surface of the work table. 10 . 10. The oscillating unwinding stacker according to claim 6, further comprising at least two pole piece supplying devices, the pole piece supplying devices are respectively located on both sides of the stacking table, and the two Each of the pole piece supply devices transports the battery pole pieces to the worktable alternately.