CN212412117U

CN212412117U - Lamination pressing cutter and lamination machine pressing mechanism

Info

Publication number: CN212412117U
Application number: CN202021261537.0U
Authority: CN
Inventors: 高远; 刘玮勇; 冯传钧
Original assignee: Svolt Energy Technology Co Ltd
Current assignee: Svolt Energy Technology Co Ltd
Priority date: 2020-06-30
Filing date: 2020-06-30
Publication date: 2021-01-26
Anticipated expiration: 2030-06-30

Abstract

The utility model provides a lamination pressing knife and lamination machine hold down mechanism, the utility model discloses a lamination pressing knife is used for pressing and holds the diaphragm or the pole piece of lamination bench, and this lamination pressing knife includes the cutting board main part, and the cutting board main part includes the location link of being connected with external drive device, can press and hold the end of pressing that is located the diaphragm or the pole piece of lamination bench, and construct in location link and press the deformation buffering portion between the end, and under external drive device's drive, press the end and can support and press diaphragm or pole piece because of moving down of cutting board main part, deformation buffering portion can warp along with moving down of cutting board main part. The utility model discloses a lamination pressing knife can cushion the pressure of pressing the end to diaphragm or pole piece, especially when initial lamination, can effectively prevent to lead to pressing the perk of end because of pressure is too big, can effectively prevent the skew of pole piece simultaneously to can improve the alignment degree of lamination, thereby can improve the quality and the efficiency of lamination.

Description

Lamination pressing cutter and lamination machine pressing mechanism

Technical Field

The utility model relates to a lamination machine accessory technical field, in particular to lamination pressing tool. The utility model discloses still relate to a lamination machine hold-down mechanism of installing this lamination pressing tool.

Background

Along with the development of the technology, high-speed lamination square lithium batteries are favored by various large lithium battery manufacturers, compared with the traditional winding process, the lamination process has obvious advantages, firstly, the lamination type unit is more attached to the rectangular shell of the square battery, the space of four corners can be fully utilized, the winding type pole group is limited by the winding process, and the phenomenon of space waste exists at the four corners of the shell. And the coiling type unit is easy to distort after long-time use, and the arcs on the two sides are coiled and broken to cause internal short circuit. The laminated pole group has better structural adaptability in the aspect of product performance, and the deformation and expansion probability of the battery is greatly reduced. Meanwhile, because the structure is simple, the safety of the battery is higher, so that the laminated battery is revolutionarily upgraded to the battery production process, and the product performance of the battery is greatly improved.

The key of the laminated battery is the lamination technology, and the efficiency and the quality of the lamination determine the quality of the battery, in the existing lamination technology, a diaphragm is placed on a lamination table, the lamination is carried out by pressing a pressing knife, and the pressing knife plays an important role in the quality of the laminated electrode group.

In the existing lamination technology, a lamination pressing cutter usually adopts a horizontal flat plate structure, as shown in fig. 1, one end of the pressing cutter 1A presses a pole group on a lamination table 10, the other end of the pressing cutter is connected to an air cylinder 2 through a fixing hole 11, the air cylinder controls the pressure of the pressing cutter 1A, the effect of the pressing cutter 1A is better along with the increase of the number of pole piece layers, but in the initial lamination, the pressing effect of the pressing cutter 1A is difficult to adjust, the first pole piece can not be pressed when the pressure is too small, and the contact part of the pressing cutter 1A and a diaphragm can be tilted when the pressure is too large, as shown in fig. 2, the pressing cutter 1A tilts by an angle alpha, and the pressing cutter 1A can not press the first pole piece, so that the pole piece deviates, the pole group alignment degree is poor, the quality of the lamination pole group is greatly influenced, and the pole group can be seriously.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention is directed to a lamination pressing tool, which can improve the pressing effect of the diaphragm or the pole piece.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

a lamination press knife for holding a diaphragm or pole piece on a lamination table, the lamination press knife comprising:

the pressing knife plate comprises a pressing knife plate main body, wherein the pressing knife plate main body comprises a positioning connecting end connected with an external driving device, a pressing end which can press and hold the diaphragm or the pole piece and is positioned on the lamination table, and a deformation buffering part which is constructed between the positioning connecting end and the pressing end, under the driving of the external driving device, the pressing end can be abutted against the diaphragm or the pole piece due to the downward movement of the pressing knife plate main body, and the deformation buffering part can deform along with the downward movement of the pressing knife plate main body.

Furthermore, the location link the deformation buffering portion with press the end for integrated into one piece be the Z shape the board of bending, the deformation buffering portion for connect in the location link with press the hang plate between the end.

Furthermore, the positioning connecting end and the pressing end are two horizontal plates which are arranged in parallel.

Furthermore, a positioning hole is formed on the positioning connection end.

Compared with the prior art, the utility model discloses following advantage has:

(1) lamination pressing tool, through the location link that sets up, so that it is fixed to the connection of pressing tool plate main part, press down the end through setting up and can compress tightly diaphragm or the pole piece of lamination bench, through the deformation buffering portion that sets up, can make and move down the in-process that compresses tightly diaphragm or pole piece in the pressing tool plate main part, the deformation buffering portion can warp, press down the pressure that the end was applyed to diaphragm or pole piece in order to cushion, thereby when initial lamination, can effectively prevent to lead to pressing down the perk of end because of pressure is too big, can effectively prevent the skew of pole piece simultaneously, and can improve the alignment degree of lamination. In addition, through the deformation buffer portion that sets up, can make pressure release more even, and then can improve the quality and the efficiency of lamination to better result of use has.

(2) The positioning connecting end, the deformation buffering part and the pressing end are integrally formed into the Z-shaped bending plate, the structure is simple, and the processing and manufacturing are convenient.

(3) The positioning connecting end and the pressing end are two parallel horizontal plates, so that arrangement of an external driving piece and the lamination table is facilitated.

(4) The locating hole that sets up to the fixed of location link and external drive device.

Another object of the utility model is to provide a lamination machine hold-down mechanism, including the lamination platform, and with the base that the lamination platform is connected, in the lamination bench be equipped with as above the lamination pressing tool, in be equipped with the constitution on the base pressing tool plate main part is along the first actuating mechanism of direction of height removal, and is constituted pressing tool plate main part is along lateral shifting's second actuating mechanism, just first actuating mechanism constitutes outside drive arrangement.

Furthermore, the lamination pressing knives are four arranged at the corners of the lamination table, two adjacent lamination pressing knives in the direction of the lamination table are in a group along the direction perpendicular to the diaphragm, and the two groups of lamination pressing knives alternately press and hold the diaphragm or the pole piece on the lamination table.

Furthermore, the second driving mechanism comprises a servo motor fixedly connected to the base, a lead screw is connected to a power output end of the servo motor, mounting seats are respectively screwed at two ends of the lead screw, the first driving mechanism is fixedly arranged on each mounting seat, and the first driving mechanism can move along with the mounting seats in a reverse synchronous mode due to rotation of the lead screw so as to form transverse movement of the pressing cutter plate main body.

Furthermore, a sliding rail is arranged at the bottom of the lamination table, and the mounting seat can move along the sliding rail.

Further, the first driving mechanism is an air cylinder, and the knife pressing plate main body is connected to a power output end of the air cylinder.

Furthermore, a sliding assembly is arranged on the power output end of the air cylinder, the knife pressing plate body is arranged on the sliding assembly, and the sliding assembly can form the sliding of the knife pressing plate along the direction orthogonal to the axial direction of the screw rod.

The utility model discloses a lamination machine hold-down mechanism and aforementioned lamination pressing tool have the same beneficial effect for prior art, no longer describe herein.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:

FIG. 1 is a schematic view of a lamination press according to the prior art;

FIG. 2 is a schematic view of the lamination press in use of FIG. 1;

fig. 3 is a schematic structural view of a lamination pressing knife according to a first embodiment of the present invention;

fig. 4 is a schematic structural diagram of a compression state of the lamination pressing tool according to the first embodiment of the present invention;

fig. 5 is a schematic structural view of a lamination pressing knife disposed on a lamination table according to a second embodiment of the present invention;

fig. 6 is a schematic structural view of a pressing mechanism of a laminating machine according to a second embodiment of the present invention;

description of reference numerals:

1A-a pressing knife, 10-a laminating table and 11-a fixing hole;

1-a knife pressing plate main body, 12-a positioning connecting end, 13-a pressing end, 14-a deformation buffer part and 15-a positioning hole;

2-cylinder, 3-servo motor, 4-lead screw, 5-slide rail.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which are only for convenience of description and simplification of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

The present embodiment relates to a lamination pressing knife, which is used for pressing and holding a diaphragm or a pole piece on a lamination table 10, and an exemplary structure of the lamination pressing knife is shown in fig. 3 and fig. 4, the lamination pressing knife of the present embodiment mainly includes a pressing knife plate main body 1, the pressing knife plate main body 1 includes a positioning connection end 12 connected to an external driving device, a pressing end 13 capable of pressing and holding the diaphragm or the pole piece on the lamination table 10, and a deformation buffer portion 14 configured between the positioning connection end 12 and the pressing end 13, and under the driving of the external driving device, the pressing end 13 can press the diaphragm or the pole piece due to the downward movement of the pressing knife plate main body 1, the deformation buffer portion 14 can deform with the downward movement of the pressing knife plate main body 1, and can buffer the pressure applied to the diaphragm or the pole piece by the pressing end 13.

The lamination pressing knife of this embodiment can move down the in-process that compresses tightly diaphragm or pole piece through the deformation buffer 14 that sets up at the pressing knife main part, can warp the energy-absorbing to can cushion and press the pressure of end 13 to diaphragm or pole piece, pressure release is more even simultaneously, and can not lead to the uneven condition of pressure along with the increase of utmost point group thickness. Especially, in the initial lamination, the tilting of the pressing end 13 caused by overlarge pressure can be effectively prevented, meanwhile, the deviation of the pole piece can be effectively prevented, the alignment degree of the lamination can be improved, and the quality and the efficiency of the lamination can be improved.

Specifically, as shown in fig. 3 and 4, the positioning connection end 12, the deformation buffer portion 14, and the pressing end 13 of the present embodiment are integrally formed as a Z-shaped bent plate, and the deformation buffer portion 14 is an inclined plate connected between the positioning connection end 12 and the pressing end 13. The bending plate which is integrally formed on the pressing cutter main body and has the Z-shaped longitudinal section is simple in structure and convenient to process and manufacture.

As a further improvement of this embodiment, the positioning connection end 12 and the pressing end 13 are two horizontal plates disposed in parallel, that is, corresponding to the connection plate and the pressing plate, so as to facilitate the arrangement of the pressing knife main body with the lamination table 10 and the external driving device, so that the connection of the pressing knife main body is stable and reliable, and the diaphragm or the pole piece on the lamination table 10 can be effectively pressed.

In order to facilitate the connection between the positioning connection end 12 and the external member, in the present embodiment, the positioning holes 15 are formed on the positioning connection end 12, and the number of the positioning holes 15 is preferably two, so that the reliability of the connection of the pressing board body 1 can be improved.

It should be noted that, in addition to the above-mentioned structural form, the deformation buffer portion 14 of the present embodiment may also be an elastic member, such as a spring or a rubber block, disposed between the positioning connection end 12 and the pressing end 13, specifically, in the overall structure, the knife pressing plate main body 1 is still substantially Z-shaped, that is, two horizontal plates constituting the positioning connection end 12 and the pressing end 13 are arranged at intervals in the height direction, and two ends of the elastic member are respectively connected to the positioning connection end 12 and the pressing end 13, so as to absorb energy through deformation of the elastic member, and also buffer the pressure applied by the pressing end 13 to the diaphragm or the pole piece.

When the pressing knife plate main body 1 of the present embodiment is used, under the driving of the external driving device, the pressing knife plate main body 1 moves downward, so that the pressing end 13 abuts against the diaphragm or the pole piece, at this time, as shown in the state shown in fig. 3, the pressing guide plate main body is in an initial state, an included angle between the pressing end 13 and the deformation buffer portion 14, that is, the inclined plate, is β, for example, 52 °, along with the continuous downward movement of the pressing knife plate main body 1, the deformation buffer portion 14 deforms, that is, the inclined plate twists, so that the pressing end 13 presses the diaphragm or the pole piece, at this time, an included angle between the pressing end 13 and the deformation buffer portion 14, that is, for example, θ, is 36 °, during the deformation process of the deformation buffer portion 14, the pressing knife plate main body 1 can effectively buffer the pressure applied to the diaphragm or the pole piece. Especially, when the lamination is initially laminated, the tilting of the pressing end 13 caused by overlarge pressure can be effectively prevented, meanwhile, the deviation of the pole piece can be effectively prevented, the alignment degree of the lamination can be improved, the quality and the efficiency of the lamination can be improved, and a better using effect is achieved.

Example two

The embodiment relates to a laminating machine pressing mechanism, an exemplary structure of which is shown in fig. 5 and 6, and the laminating machine pressing mechanism comprises a laminating table 10 and a base connected with the bottom of the laminating table 10, wherein a laminating press knife in the first embodiment is arranged on the laminating table 10, a first driving mechanism for enabling the press knife to move along the height direction of the press knife plate main body 1 and a second driving mechanism for enabling the press knife to move along the transverse direction of the press knife plate main body 1 are arranged on the base, and the first driving mechanism forms an external driving device, so that the laminating press knife can move along the height direction and the transverse direction, and a pressing end 13 can press a diaphragm or a pole piece on the laminating table 10 and release the pressing.

Specifically, as shown in fig. 5 and 6, the number of the lamination pressing knives of the present embodiment is four, two adjacent lamination pressing knives are a group, and two groups of the lamination pressing knives alternately press and hold the diaphragm or the pole piece on the lamination table 10. Namely, two lamination pressing knives are respectively arranged on two sides of the path of the lamination table 10 along the diaphragm, wherein two adjacent lamination pressing knives in the direction perpendicular to the diaphragm flatly-laying lamination table 10 are in one group, and the lamination operation is carried out by alternately pressing and holding the diaphragm or the pole piece on the lamination table 10 by the two groups of lamination pressing knives.

In order to make things convenient for the lamination pressing tool of same group, it is also that pressing tool plate main part 1 can remove along horizontal or direction of height simultaneously, in this embodiment, be equipped with second actuating mechanism on the base, it is concrete, this second actuating mechanism is including linking firmly servo motor 3 on the base, be connected with lead screw 4 in servo motor 3's power take off end, it has the mount pad to have the spiro union respectively in lead screw 4's both ends, first actuating mechanism has set firmly on each mount pad, and first actuating mechanism is because of lead screw 4's rotation, can be along with the reverse synchronous motion of mount pad, thereby can make pressing tool plate main part 1 who locates on two first actuating mechanism can lateral shifting, it is also that can be synchronous to be close to each other or keep away from each other along the horizontal direction.

In order to improve the moving stability of the mounting seat, a sliding rail 5 is arranged at the bottom of the lamination table 10, and the mounting seat can move along the sliding rail 5. As shown in fig. 6, the mounting base has a connecting block screwed with the lead screw 4, and a sliding block connected with the connecting block and capable of moving along the sliding rail 5, and the cylinder 2 of this embodiment is fixed on the sliding block, but may also be fixed on the connecting block or on the upper surfaces of the connecting block and the sliding block.

The first driving mechanism of this embodiment is the cylinder 2, and the pressing board body 1 is connected to the power output end of the cylinder 2, so that the pressing board body 1 can reciprocate along the height direction to press or release the pressing of the diaphragm or the pole piece on the lamination table 10. In order to facilitate the adjustment of the knife holding plate body 1 along the longitudinal direction, in this embodiment, a sliding component is disposed on the power output end of the cylinder 2, the knife holding plate body 1 is disposed on the sliding component, and the sliding component can constitute the sliding of the knife holding plate along the axial direction orthogonal to the screw 4.

Specifically, as shown in fig. 6, the sliding assembly includes a bottom plate fixedly connected to the power output end of the cylinder 2, and a fixing plate slidably disposed on the bottom plate, wherein the knife pressing plate body 1 is screwed to the fixing plate through two positioning holes 15, a sliding block extending in the longitudinal direction is configured on one of the bottom plate and the fixing plate, a sliding groove is configured on the other of the bottom plate and the fixing plate corresponding to the sliding block, and the movement of the sliding block and the sliding groove is used to realize the movement of the knife pressing plate body 1 in the longitudinal direction, so that the knife pressing plate can be adapted to different size pole groups for lamination.

In order to ensure the positioning reliability of the knife pressing plate main body 1, in the embodiment, the jackscrew can be screwed in the positioning hole 15 and tightly jacks the bottom plate, when different sizes of pole groups are required to be adjusted for lamination, only the jackscrew needs to be unscrewed, and when the proper position is to be adjusted, the jackscrew is screwed tightly to reliably position the knife pressing plate main body 1.

The pressing mechanism of this embodiment can realize the intermittent reciprocating motion of two sets of pressure knife board main parts 1 through the first actuating mechanism and the second actuating mechanism that set up, make pressure knife board main part 1 lift up, withdraw to the separation of both sides, to both sides near the intermittent reciprocating motion of four actions of stretching out, compressing tightly downwards to make the alternative pressure of two sets of lamination pressure knives hold the diaphragm or the pole piece on lamination platform 10 and carry out the lamination operation.

The pressing mechanism of the laminating machine of the embodiment can effectively improve the alignment degree of the laminated sheets by being provided with the laminated sheet pressing knife of the embodiment I, so that the quality and the efficiency of the laminated sheets can be improved.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A lamination press knife for pressing a membrane or a pole piece on a lamination table (10), characterized in that it comprises:

the pressing knife plate comprises a pressing knife plate main body (1), wherein the pressing knife plate main body (1) comprises a positioning connecting end (12) connected with an external driving device, a pressing end (13) capable of pressing and holding the diaphragm or the pole piece on the lamination table (10), and a deformation buffering part (14) constructed between the positioning connecting end (12) and the pressing end (13), the pressing end (13) can be pressed against the diaphragm or the pole piece due to downward movement of the pressing knife plate main body (1) under the driving of the external driving device, and the deformation buffering part (14) can deform along with the downward movement of the pressing knife plate main body (1).

2. The lamination press knife of claim 1, wherein: the positioning connecting end (12), the deformation buffer part (14) and the pressing end (13) are integrally formed bending plates in a Z shape, and the deformation buffer part (14) is connected with the positioning connecting end (12) and an inclined plate between the pressing ends (13).

3. The lamination press knife of claim 2, wherein: the positioning connecting end (12) and the pressing end (13) are two horizontal plates which are arranged in parallel.

4. The lamination press knife of claim 1, wherein: a positioning hole (15) is formed on the positioning connecting end (12).

5. A laminating machine pressing mechanism comprises a laminating table (10) and a base connected with the laminating table (10), and is characterized in that the laminating table (10) is provided with a laminating press knife according to any one of claims 1 to 4, the base is provided with a first driving mechanism for forming the movement of the press knife plate main body (1) along the height direction and a second driving mechanism for forming the movement of the press knife plate main body (1) along the transverse direction, and the first driving mechanism forms the external driving device.

6. The laminating machine compressing mechanism of claim 5, wherein: the lamination pressing knives are four arranged at the corners of the lamination table (10), two adjacent lamination pressing knives in the direction of the lamination table (10) are flatly laid along a direction perpendicular to the diaphragm and form a group, and the two groups of lamination pressing knives alternately press and hold the diaphragm or the pole piece on the lamination table (10).

7. The laminating machine compressing mechanism of claim 6, wherein: the second drive mechanism including link firmly in servo motor (3) on the base, in the power take off end of servo motor (3) is connected with lead screw (4), in the both ends of lead screw (4) spiro union have the mount pad respectively, each set firmly on the mount pad first drive mechanism, just first drive mechanism because of the rotation of lead screw (4), can follow the reverse synchronous motion of mount pad, in order to constitute the lateral shifting of presser bar main part (1).

8. The laminating machine compressing mechanism of claim 7, wherein: a sliding rail (5) is arranged at the bottom of the lamination table (10), and the mounting seat can move along the sliding rail (5).

9. The laminating machine compressing mechanism of claim 8, wherein: the first driving mechanism is an air cylinder (2), and the knife pressing plate main body (1) is connected to the power output end of the air cylinder (2).

10. The laminating machine compressing mechanism of claim 9, wherein: the sliding assembly is arranged on the power output end of the air cylinder (2), the knife pressing plate body (1) is arranged on the sliding assembly, and the sliding assembly can form the sliding of the knife pressing plate along the direction orthogonal to the axial direction of the screw rod (4).