CN211045615U

CN211045615U - Pole piece positioning and taking mechanism and laminating machine

Info

Publication number: CN211045615U
Application number: CN201922354739.3U
Authority: CN
Inventors: 夏依君; 杨洪; 刘小华; 张勍; 王张志
Original assignee: Evergrande New Energy Technology Shenzhen Co Ltd
Current assignee: Evergrande New Energy Technology Shenzhen Co Ltd
Priority date: 2019-12-24
Filing date: 2019-12-24
Publication date: 2020-07-17
Anticipated expiration: 2029-12-24

Abstract

The utility model relates to the technical field of pole piece positioning, and provides a pole piece positioning and taking mechanism and a pole piece laminating machine, the pole piece positioning and taking mechanism comprises a support frame and a plurality of adsorption units arranged on the support frame in a liftable way, wherein, the pole piece positioning and taking mechanism also comprises a pressing support which presses a pole piece on a positioning bottom plate, the pressing support and the support frame are arranged at intervals and are fixedly connected, and an accommodating space for accommodating the adsorption units is arranged between the pressing support and the support frame; the lower pressing support is provided with a through hole, and the support frame is provided with a driving assembly so that the adsorption unit penetrates through the through hole in the lower pressing support and abuts against the pole piece. Compared with the prior art, the pole piece positioning and taking mechanism comprises a support frame, an adsorption unit and a pressing support, before positioning and adsorption, the pole piece is pressed on the positioning bottom plate by the pressing support, so that the pole piece is pressed flat, and the pole piece is adsorbed by the adsorption unit and then grabbed to the stacking station, thereby greatly reducing the dislocation of the pole piece and improving the stacking precision.

Description

Pole piece positioning and taking mechanism and laminating machine

Technical Field

The utility model belongs to the technical field of the technique of pole piece location and specifically relates to a pole piece location is got piece mechanism and is applied lamination machine of this mechanism.

Background

At present, in a laminate process of a soft package battery, cut pole pieces need to be laminated, and only the pole pieces are laminated, the next production can be carried out, and a qualified battery is produced; the positive pole piece and the negative pole piece of the laminated body are staggered less when the pole pieces are accurately positioned, otherwise, the positive pole piece and the negative pole piece of the laminated body are staggered less, and the positive pole piece cannot be completely coated by the negative pole piece due to too large dislocation, so that the performance of the battery is influenced, and serious safety problems are caused in the battery circulation process.

The traditional positioning method mainly includes two types, one is mechanical positioning, which is used for positioning four sides of a pole piece, the other is that the pole piece is adsorbed on a positioning bottom plate through vacuum, and simultaneously, a Charge Coupled Device (CCD) is used for determining four corners of the pole piece, and the position of the pole piece is determined through the method. However, when the pole piece is in a non-flat shape, especially when the pole piece is in an arched shape due to the influence of factors such as stress, the pole piece cannot be smoothed by mechanical positioning, so that the positioning effect is influenced; and vacuum adsorption and CCD positioning are adopted, so that the difficult positioning caused by difficult adsorption can also occur when the arched deformation of the pole piece is large. Inaccurate positioning directly influences the condition of dislocation caused by the cladding of the laminated positive and negative electrodes, and influences the performance and safety of subsequent batteries.

SUMMERY OF THE UTILITY MODEL

One of the purposes of the utility model is that: the utility model provides a piece mechanism is got in pole piece location to solve the technical problem that exists among the prior art to uneven pole piece, can't pinpoint it.

In order to achieve the above purpose, the utility model provides a following technical scheme:

the utility model provides a pole piece positioning and taking mechanism, which comprises a support frame and a plurality of adsorption units arranged on the support frame in a liftable way, wherein the pole piece positioning and taking mechanism also comprises a pressing support which presses a pole piece on a positioning bottom plate, the pressing support and the support frame are arranged at intervals and are fixedly connected, and a containing space for containing a plurality of adsorption units is arranged between the pressing support and the support frame; the pole piece pressing device is characterized in that a through hole is formed in the pressing support, and a driving assembly is arranged on the support frame, so that the adsorption unit penetrates through the through hole formed in the pressing support and abuts against the pole piece.

The technical scheme of the utility model has following advantage: the pole piece positioning and taking mechanism comprises a support frame, an adsorption unit and a pressing support, wherein the pressing support moves along with the movement of the support frame, and when the pressing support moves towards a positioning bottom plate, the pressing support and the positioning bottom plate together compress a pole piece placed on the positioning bottom plate, and then the adsorption unit is controlled by a driving assembly to move so as to penetrate through a through hole formed in the pressing support and then contact with the pole piece and adsorb and fix the pole piece, so that the pole piece with an uneven surface, particularly the pole piece with an arched surface under the influence of external force, is compressed on the positioning bottom plate by the pressing support before positioning and adsorption, is flattened, and is adsorbed by the adsorption unit and then captured to a stacking station, so that the application range is wider, and the arched pole piece can be positioned more accurately for the pole piece with an uneven shape; in addition, the adsorption unit is positioned in the accommodating space before positioning is completed, namely, the adsorption unit is positioned above the pressing support and does not contact with the pole piece, the situation that the pole piece is not positioned completely and contacts with the adsorption unit to cause difficulty in subsequent positioning is prevented, and the positioning accuracy can be greatly improved; in addition, compared with CCD positioning, the cost is lower.

In one embodiment, the pressing bracket comprises a rectangular pressing plate, and the pressing plate is provided with the through hole.

In one embodiment, the pressure plate has an abutting surface abutting against the pole piece, the area size of the abutting surface being smaller than the area size of the pole piece.

In one embodiment, the wall of the through hole is provided with a chamfer.

In one embodiment, the driving assembly comprises a plurality of air cylinders, the air cylinders correspond to the adsorption units one by one, and each air cylinder is connected with the adsorption unit through a connecting part;

or, the driving assembly comprises a plurality of motors, the motors are in one-to-one correspondence with the adsorption units respectively, and each motor is connected with the adsorption unit through a connecting part.

In one embodiment, the connecting member is a telescopic rod, and the adsorption unit is arranged on the telescopic rod.

In one embodiment, a fixing column is arranged between the supporting frame and the pressing support.

In one embodiment, the hold-down bracket is mounted to the stationary post in a height-adjustable manner.

In one embodiment, an elastic component is arranged between the pressing bracket and the fixing column.

Yet another object of the present invention is: the utility model provides a lamination machine, solves pole piece location inaccurate among the prior art, and the dislocation is great between the lamination body positive negative pole piece after the lamination, leads to the negative pole piece can not the complete cladding positive pole piece, influences the technical problem of battery's performance.

In order to realize the purpose, the utility model provides a lamination machine, get piece mechanism including foretell pole piece location.

The laminating machine comprises the pole piece positioning and taking mechanism, so that the dislocation phenomenon of the pole pieces after lamination is greatly reduced, and the lamination precision is improved.

Drawings

Fig. 1 is a schematic top view of a pole piece positioning and taking mechanism provided in an embodiment of the present invention;

fig. 2 is a schematic perspective view of a pole piece positioning and taking mechanism provided in an embodiment of the present invention;

fig. 3 is a schematic cross-sectional view of an adsorption unit in a pole piece positioning and taking mechanism according to a first embodiment of the present invention at an initial position;

fig. 4 is a schematic cross-sectional view of an absorption unit in a pole piece positioning and taking mechanism according to a first embodiment of the present invention at an extended position;

fig. 5 is a schematic perspective view of a pole piece positioning and taking mechanism provided by the second embodiment of the present invention.

Description of the main element symbols:

201-positioning the bottom plate; 202 a-pole ear; 204-positioning jig; 100-a pole piece positioning and taking mechanism;

10-a support frame; 20-an adsorption unit; 30-pressing the bracket; 311-a pressing surface; 313-chamfering;

40-a drive assembly; 42-a connecting member; 202-pole piece; 203-a four-side positioning mechanism;

10 a-an accommodation space; 31-a platen; 312-a via; 32-pressing strips; 41-cylinder; 50-fixed column.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It is to be understood that the embodiments described are some, but not all embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive work based on the described embodiments of the present invention, belong to the protection scope of the present invention.

In order to make those skilled in the art better understand the technical solution of the present invention, the following detailed description is provided for the implementation of the present invention with reference to the specific drawings.

For convenience of description, the terms "upper" and "lower" are used in the same direction as the upper and lower directions of the drawings, but do not limit the structure of the present invention.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of the words "a" or "an" and the like in the description and claims of the present application does not denote a limitation of quantity, but rather denotes the presence of at least one.

Example one

As shown in fig. 1 to 4, the pole piece positioning and taking mechanism 100 provided in this embodiment includes a support frame 10 and a plurality of adsorption units 20 installed on the support frame 10 in a liftable manner, wherein the pole piece positioning and taking mechanism 100 further includes a pressing bracket 30 for pressing a pole piece against a positioning bottom plate 201, the pressing bracket 30 and the support frame 10 are arranged at intervals and fixedly connected, and an accommodating space 10a for accommodating the adsorption units 20 is provided between the pressing bracket 30 and the support frame 10; the pressing bracket 30 is provided with a through hole 312, and the supporting frame 10 is provided with a driving assembly 40, so that the adsorption unit 20 passes through the through hole 312 provided on the pressing bracket 30 and abuts against the pole piece 202.

The pole piece positioning and taking mechanism 100 comprises a support frame 10, an adsorption unit 20 and a lower pressing support 30, wherein the lower pressing support 30 moves along with the movement of the support frame 10, when the lower pressing support moves towards a positioning bottom plate 201, the lower pressing support and the positioning bottom plate 201 press a pole piece 202 placed on the positioning bottom plate 201 together, the adsorption unit 20 is controlled by a driving assembly 40 to move so as to penetrate through a through hole formed in the lower pressing support 30 and then contact with the pole piece 202, and the pole piece 202 is adsorbed and fixed, so that for the pole piece 202 with an uneven surface, particularly for the pole piece 202 with an arched surface under the influence of external force, before positioning and adsorption, the pole piece 202 is pressed on the positioning bottom plate 201 by the lower pressing support 30, so that the pole piece 202 is flattened, and then the pole piece 202 is adsorbed and then captured to a laminating station by the adsorption unit 20, thus, the application range is wider, and for the pole piece 202 with an uneven, the arched pole pieces 202 can be positioned more accurately, the dislocation phenomenon of the laminated pole pieces 202 is greatly reduced, and the laminating precision is improved; in addition, the adsorption unit 20 is positioned in the accommodating space 10a before the positioning is completed, namely above the pressing bracket 30, and does not contact with the pole piece 202, so that the situation that the pole piece 202 is not positioned completely and contacts with the adsorption unit 20 to cause difficulty in subsequent positioning is prevented, and the positioning accuracy can be greatly improved; in addition, compared with CCD positioning, the cost is lower.

Referring to fig. 1, the pole piece positioning and taking mechanism 100 provided in this embodiment cooperates with a positioning bottom plate 201 and a four-side positioning mechanism 203 to position a pole piece 202, the positioning bottom plate 201 is used to place the pole piece 202, in this embodiment, the pole piece 202 is substantially rectangular, and has a tab portion 202a located on one side thereof; the four-side positioning mechanism 203 includes four positioning jigs 204 respectively corresponding to four edges of the pole piece 202, and particularly, after the pole piece 202 is placed on the positioning bottom plate 201, the pole piece 202 is firstly pressed flat by the pressing bracket 30, then the pole piece 202 is positioned at a predetermined position by the movement of the four positioning jigs 204, and finally the pole piece 202 is grabbed by the adsorption unit 20.

Referring to fig. 2 to 4, the pole piece positioning and taking mechanism 100 includes a support frame 10, a lower support frame 30, a driving assembly 40 and an absorption unit 20, the lower support frame 30 is disposed below (shown below) the support frame 10 at intervals, the driving assembly 40 and the absorption unit 20 are supported on the support frame 10, it should be noted that the support frame 10 is respectively connected to a translation module (not shown) and a lifting module (not shown), the translation module is an existing translation driving module capable of realizing translation movement of the support frame 10, the lifting module is an existing lifting driving module capable of realizing lifting movement of the support frame 10, it is easily understood that the translation module can realize transfer of the support frame 10 between a positioning station (i.e. on the positioning bottom plate 201) and a stacking station (not shown), the lifting module can lift and descend the support frame 10 to press and lift the pole piece 202.

Referring to fig. 2, the pressing bracket 30 is installed below the supporting frame 10 (below the illustrated embodiment), the pressing bracket 30 is spaced from and fixedly connected to the supporting frame 10, and an accommodating space 10a is provided between the pressing bracket 30 and the supporting frame 10, it can be understood that the pressing bracket 30 is installed on one side of the supporting frame 10 close to the positioning bottom plate 201, and the pressing bracket 30 is fixedly installed on the supporting frame 10 and is driven by the supporting frame 10 to move together when the supporting frame 10 moves.

Referring to fig. 2, in the present embodiment, the pressing bracket 30 includes a rectangular pressing plate 31, a bottom surface (i.e., a lower surface shown in the figure) of the pressing plate 31 is a plane and is substantially parallel to the surface of the positioning bottom plate 201, a projection area of the pressing plate 31 along a direction perpendicular to the positioning bottom plate 201 is smaller than an area of the pole piece 202, in the present embodiment, the pressing plate 31 has a pressing surface 311 located on the bottom surface and abutting against the pole piece 202, and an area size of the pressing surface 311 is smaller than an area size of the pole piece 202.

Specifically, the long side dimension of the bottom surface of the rectangular pressing plate 31 is 2 to 10mm shorter than the long side dimension of the pole piece 202, and the short side dimension of the bottom surface of the pressing plate 31 is 2 to 10mm shorter than the short side dimension of the pole piece 202. It is easy to understand that, after the pole piece 202 is pressed down by the pressing plate 31, the edge of the pole piece 202 is exposed outside the pressing plate 31, and then the four-side positioning mechanism 203 pushes the exposed edge of the pole piece 202, so as to center and position the pole piece 202, thus, through the above size design, the pole piece 202 can be flattened without affecting the four-side positioning of the pole piece 202.

As a further optimization, the bottom surface of the pressing plate 31 may be convexly provided with a wave-shaped protrusion, or a plurality of protrusions, so that after the pressing plate 31 is pressed down, the pressing plate 31 and the pole piece 202 are in line contact or point contact, which facilitates the four-side positioning mechanism 203 to push the pole piece 202 to move when the pole piece 202 is pressed.

Referring to fig. 2 to 4, the suction unit 20 is installed on the support frame 10 in a liftable manner, the driving assembly 40 can drive the suction unit 20 to move up and down (up and down direction shown in the figure), the suction unit 20 can be a suction cup, a vacuum suction nozzle or a suction rod, in this embodiment, the suction unit 20 is, but not limited to, a suction cup, and is installed on the support frame 10 through the driving assembly 40 and accommodated in the accommodating space 10a provided between the lower pressure bracket 30 and the support frame 10, the pressing plate 31 is provided with a through hole 312 for the suction unit 20 to pass through, and the aperture size of the through hole 312 is adapted to the cross-sectional size of the suction unit 20, so as to ensure that the suction unit 20 passes through sequentially. It should be mentioned that, before the pole piece 202 is not adsorbed by the adsorption unit 20, the adsorption unit 20 is accommodated in the accommodation space 10a, and a preset gap is kept between the adsorption unit 20 and the pressure plate 31, so that the adsorption unit 20 does not contact with the pressure plate 31, and no adsorption effect is generated on the pole piece 202, so that the positioning of the pole piece 202 is not affected, after the pole piece 202 is flattened by the pressure plate 31, the driving assembly 40 drives the adsorption unit 20 to move down, and extends into the through hole 312 to contact with the pole piece 202, so that the pole piece 202 is adsorbed and held below the support frame 10.

FIG. 3 is a schematic cross-sectional view of the adsorption unit 20 in an initial position; fig. 4 is a schematic cross-sectional view of the adsorption unit 20 in an extended position.

Referring to fig. 3 and 4, in the present embodiment, the number of the adsorption units 20 is, but not limited to, five, and the number of the through holes 312 of the pressure plate 31 is, but not limited to, five, and corresponds to the five adsorption units 20, respectively. The driving assembly 40 includes cylinders 41, the number of the cylinders 41 is, but not limited to, five, the five cylinders 41 correspond to the five adsorption units 20 one by one, each cylinder 41 is connected to the adsorption unit 20 through a connection part 42, the corresponding connection part 42 is, but not limited to, a telescopic rod, and the adsorption unit 20 is disposed on the telescopic rod, it can be understood that, under the action of the cylinders 41, the telescopic rod moves up and down, so as to drive the adsorption unit 20 mounted on the telescopic rod to move up and down.

In another embodiment, the driving assembly 40 includes motors, which are but not limited to linear motors, the number of the motors is but not limited to five, five motors are respectively in one-to-one correspondence with five adsorption units 20, each motor is connected with the adsorption unit 20 through a connecting member 42, the corresponding connecting member 42 is but not limited to a telescopic rod, and the adsorption unit 20 is disposed on the telescopic rod.

In yet another embodiment, the driving assembly 40 includes a motor, such as but not limited to a rotary motor, a lead screw is connected to an output shaft of the motor, and the connecting member 42 is, but not limited to, a nut seat.

As can be seen from fig. 3 and 4, the wall of the through hole 312 is provided with a chamfer 313. In the present embodiment, the chamfer 313 is located at one end of the through hole 312 connected with the bottom surface of the pressure plate 31, i.e. the chamfer 313 of the through hole 312 is arranged on the bottom surface of the pressure plate 31, so that the edge of the through hole 312 can be prevented from damaging the pole piece 202.

In yet another embodiment, both ends of the wall of the through hole may be provided with chamfers 313.

Referring to fig. 2 to 4, a fixing post 50 is provided between the supporting bracket 10 and the push-down bracket 30. In the present embodiment, the upper end (shown upper end) of the fixing pillar 50 can be fixedly connected to the supporting frame 10 by any conventional fixing means such as screws and welding, and the pressing bracket 30 is connected to the lower end (shown lower end) of the fixing base by a fastening member (not shown), which can be a screw, a nut, or the like. It is easy to understand that, the fixing posts 50 are used to facilitate the installation and fixation of the pressing bracket 30 and the supporting bracket 10, and in addition, when the pressing bracket 30 presses down, the fixing posts 50 provide a pressing supporting force to the pressing bracket 30, so as to ensure the pressing force of the pressing bracket 30 to the pole piece 202.

As a further improvement, the hold-down bracket 30 is mounted to the fixing post 50 in a height-adjustable manner. In the present embodiment, an adjusting screw (not shown) is formed at a lower end (shown lower end) of the fixing column 50, and a nut (not shown) is screwed to change a position of the pressing bracket 30 on the fixing column 50, that is, adjust a position of the pressing bracket 30 relative to the support frame 10, so that the adsorption unit 20 can be ensured to effectively contact the pole piece 202, and the adsorption effect on the pole piece 202 is improved.

As a further improvement, an elastic member (not shown) is provided between the hold-down bracket 30 and the fixing post 50. In this embodiment, the elastic member is, but not limited to, a spring, and thus, by additionally arranging the elastic member between the pressing support 30 and the fixing column 50, a buffer is formed when the pressing support 30 abuts against the positioning bottom plate 201, which not only can improve the pressing effect on the pole piece 202, but also can avoid the phenomenon that the pressing support 30 and the positioning bottom plate 201 are damaged due to too large impact force.

The laminating machine provided by the embodiment comprises the pole piece positioning and taking mechanism 100, and the laminating machine adopts the pole piece positioning and taking mechanism 100 to position the pole piece 202, adsorbs and fixes the pole piece 202 after positioning, and then moves the positioned pole piece 202 to the laminating station to laminate the pole piece 202 so as to prepare the soft package battery.

Example two

Only the differences from the first embodiment will be described in detail with reference to fig. 5:

as shown in fig. 5, in the present embodiment, the pole piece positioning and taking mechanism 100 includes a support frame 10 and a plurality of adsorption units 20 installed on the support frame 10 in a liftable manner, wherein the pole piece positioning and taking mechanism 100 further includes a pressing bracket 30 pressing a pole piece 202 against a positioning bottom plate 201, the pressing bracket 30 and the support frame 10 are arranged at intervals and fixedly connected, and an accommodating space 10a accommodating the plurality of adsorption units 20 is provided between the pressing bracket 30 and the support frame 10; the pressing bracket is provided with a through hole 312, and the support frame 10 is provided with a driving assembly 40, so that the adsorption unit 20 passes through the through hole 312 provided on the pressing bracket 30 and abuts against the pole piece 202.

The pressing bracket 30 includes strip-shaped pressing strips 32, the number of the pressing strips 32 is, but not limited to, two, the two pressing strips 32 are arranged side by side and at intervals, the bottom surfaces (i.e., the lower surfaces in the figure) of the pressing strips 32 are planar, and the bottom surfaces of the two pressing strips 32 are on the same plane and are substantially parallel to the surface of the positioning base plate 201. The projection area of the two pressing strips 32 along the direction perpendicular to the positioning bottom plate 201 is smaller than the area of the pole piece 202, through holes 312 for the adsorption units 20 to pass through are formed in the pressing strips 32, and the space formed between the two pressing strips 32 can also be used for the adsorption units 20 to pass through. The aperture size of the through hole 312 is matched with the sectional size of the adsorption unit 20 and the space (i.e. the distance between the two pressing strips 32) is matched with the sectional size of the adsorption unit 20, so as to ensure that the adsorption unit 20 passes through in sequence.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modification, equivalent replacement or improvement made within the spirit and principle of the present invention should be included in the present invention.

Claims

1. A pole piece positioning and taking mechanism comprises a support frame and a plurality of adsorption units arranged on the support frame in a lifting manner, and is characterized by further comprising a pressing support for pressing a pole piece on a positioning bottom plate, wherein the pressing support and the support frame are arranged at intervals and fixedly connected, and an accommodating space for accommodating the adsorption units is arranged between the pressing support and the support frame; the pole piece pressing device is characterized in that a through hole is formed in the pressing support, and a driving assembly is arranged on the support frame, so that the adsorption unit penetrates through the through hole formed in the pressing support and abuts against the pole piece.

2. The pole piece positioning and taking mechanism of claim 1, wherein the pressing bracket comprises a rectangular pressing plate, and the pressing plate is provided with the through hole.

3. The pole piece positioning and taking mechanism of claim 2, wherein the pressure plate has a pressing surface against the pole piece, and the area size of the pressing surface is smaller than that of the pole piece.

4. The pole piece positioning and taking mechanism of claim 1, wherein a chamfer is provided on the wall of the through hole.

5. The pole piece positioning and taking mechanism according to claim 1, wherein the driving assembly comprises a plurality of air cylinders, the air cylinders correspond to the adsorption units one by one, and each air cylinder is connected with the adsorption unit through a connecting part; or, the driving assembly comprises a plurality of motors, the motors are in one-to-one correspondence with the adsorption units respectively, and each motor is connected with the adsorption unit through a connecting part.

6. The pole piece positioning and taking mechanism of claim 5, wherein the connecting part is a telescopic rod, and the adsorption unit is arranged on the telescopic rod.

7. The pole piece positioning and taking mechanism of claim 1, wherein a fixing column is arranged between the support frame and the pressing support.

8. The pole piece positioning and taking mechanism of claim 7, wherein the pressing bracket is mounted to the fixing post in a height-adjustable manner.

9. The pole piece positioning and taking mechanism of claim 7, wherein an elastic member is arranged between the pressing bracket and the fixing column.

10. A lamination machine, characterized in that it comprises a pole piece positioning and taking mechanism according to any one of claims 1 to 9.