CN116371663A - A thinning device applied to coating edge of transfer coating machine - Google Patents

Abstract

The embodiment of the invention provides a thinning device applied to the coating edge of a transfer coater, which is characterized by comprising a knife roll, a soft magnetic sheet, an arc-shaped sheet and a strong magnetic sheet; the knife roll is provided with a groove; one side surface of the soft magnetic sheet is provided with a first magnetic surface, and the other side surface of the soft magnetic sheet is provided with a first magnetic surface; the first adhesive surface is adhered in the groove; one side surface of the strong magnetic sheet is provided with a second adhesive surface, the other side surface of the strong magnetic sheet is provided with a second magnetic surface, and the second adhesive surface is adjacent to the second magnetic surface and is vertically arranged; the arc-shaped sheet is adhered to the second adhesive surface; the second magnetic surface is connected to the first magnetic surface in an adsorption mode. The structure does not need to modify the knife roller of the coating machine, is simple and convenient to install, can replace the model size of the skived sheet at any time according to the actual requirements of the skived thickness and the size, is convenient and quick, and is not limited by the coating size; the device has the advantages of simple structure and strong practicability, and can be suitable for large-scale production.

Description

A thinning device applied to the coated edge of a transfer coater

technical field

The invention relates to the field of battery technology, in particular to a thinning device applied to the coating edge of a transfer coating machine.

Background technique

Lithium-ion batteries have the advantages of high specific energy, long cycle life, high working voltage, small self-discharge and no memory effect, and have been widely used in electric vehicles and energy storage systems. In the preparation process of lithium-ion batteries, slurry coating is the next process after the slurry preparation is completed, mainly to uniformly coat the slurry with good stability, good viscosity and good fluidity on the positive and negative current collectors. superior. At present, the existing slurry coating generally adopts a transfer coating method for slurry coating.

However, due to the flow characteristics of the slurry and the baffle plate of the coater, the slurry will accumulate on both sides of the edge of the coating during transfer coating, resulting in the thickness of the edge of the coating being several microns to several microns thicker than the normal area. Ten microns, when winding after coating and drying, hundreds of layers of pole pieces are collected into one roll, and the raised lines of edge thickness accumulate to a few millimeters, which leads to the phenomenon of bulging of the pole roll, and in severe cases, it will cause the pole pieces to break. Seriously affect the uniformity of coating winding and its follow-up process.

Patent CN207823308U discloses a thinning device for transfer coating machine pole roll edge, which physically reduces the thickness of the coating edge by setting thinning patches to achieve thinning and suppress pole roll edge the goal of. However, the position of the thinning patch is fixed by bolts, so it cannot be flexibly applied to thinning of different coating widths, and the installation of the device is cumbersome, requiring modification of the coating machine.

Patent CN209549883U discloses a coating thinning device for a transfer coater, which achieves precise thinning by adhesive tape left and right symmetrically adhered to the knife roller. However, the glue sticking position of this device is fixed, and the adhesive tape cannot be adjusted or moved during the coating process, and cannot be flexibly applied to thinning of different coating widths.

Contents of the invention

Based on this, the embodiment of the present invention provides a thinning device applied to the coating edge of a transfer coating machine, which aims to solve the problem that the existing thinning device is complicated to install, and its thinning components are fixed in position and cannot be flexibly adjusted and moved, which cannot be applied Technical issues such as thinning of pole rolls with different coating widths.

In order to achieve the above object, an embodiment of the present invention provides a thinning device applied to the coating edge of a transfer coating machine, including a knife roller, a soft magnetic sheet, an arc-shaped sheet and a strong magnetic sheet; the knife roller is provided with a concave Groove; one side of the soft magnetic sheet is set as the first adhesive surface, and the other side is set as the first magnetic surface; the first adhesive surface is bonded in the groove;

One side of the strong magnetic sheet is set as a second tape surface, and the other side is set as a second tape surface, and the second tape surface is adjacent to the second tape surface and is vertically arranged; The arc-shaped sheet is bonded to the second adhesive surface; the second magnetic surface is suction-connected to the first magnetic surface.

In this way, the entire thinning device can be closely attached to the knife edge of the knife roller. When coating with different coating sizes, the position of the thinning device can be flexibly moved according to actual needs, so as to achieve the purpose of flexible thinning.

As a preferred embodiment, at least two grooves are provided on the knife roller, and the two grooves are arranged independently of each other, and the first rubber-coated surface is arranged in one of the grooves. In this way, when one of the grooves is broken, another groove can be quickly replaced to thin the coating edge of the transfer coater, which is convenient and quick.

As a preferred embodiment, the knife roll is a cylindrical knife roll, and the two grooves are symmetrically arranged on the circumferential surface of the knife roll.

As a preferred embodiment, the length of the knife roller is adapted to the length of the soft magnetic sheet; the length of the soft magnetic sheet is adapted to the length of the strong magnetic sheet. In this way, the stability of the installation of the thinning device and the thinning effect can be guaranteed.

As a preferred embodiment, the curvature of the arc-shaped sheet is arranged to match the circumferential surface of the knife roller, and the arc-shaped thin sheet is arranged to be attached to the circumferential surface of the knife roller.

As a preferred embodiment, the depth of the groove is 4mm, and the width of the groove is 0mm˜40mm.

As a preferred embodiment, the arc-shaped flakes have a thickness of 0 μm to 50 μm, and the arc-shaped flakes have a width of 0 mm to 20 mm.

As a preferred embodiment, the thickness of the ferromagnetic sheet is ≦2 mm, the width of the ferromagnetic sheet is 0 mm to 20 mm, and the length of the ferromagnetic sheet is 0 mm to 500 mm.

As a preferred embodiment, the soft magnetic sheet is a 0.5*20mm soft magnetic sheet.

As a preferred embodiment, the soft magnetic sheet is a rubber soft magnetic sheet.

As a preferred embodiment, the curved sheet is a stainless steel curved sheet.

As a preferred embodiment, the strong magnetic sheet is an NdFeB strong magnetic sheet.

In this application, by setting the arc-shaped sheet and bonding the arc-shaped sheet to the strong magnetic sheet, the soft magnetic sheet absorbs the strong magnetic sheet to realize that the whole thinning device is close to the knife edge of the knife roller, and the edge drum edge can be coated conveniently and quickly. The position is thinned, so as to effectively reduce the output of the edge of the drum. The structure of this application does not need to modify the knife roller of the coating machine, and the installation is simple and convenient. According to the actual needs of the thinning thickness and size, the model size of the thinning sheet can be replaced at any time, which is convenient and fast, and is not limited by the coating size; it can be moved flexibly The position of the thinning device is used to achieve the purpose of flexible thinning when coating with different coating sizes. The application has a simple structure, does not need to reinforce too many parts, is convenient to install, has strong practicability, and is suitable for large-scale production.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained according to the structures shown in these drawings without creative effort.

Fig. 1 is the side structure schematic diagram of the thinning device that is applied to the coating edge of transfer coater according to an embodiment of the present invention;

Fig. 2 is the structural representation of the knife roller and the soft magnetic sheet applied to the thinning device of the transfer coating machine coating edge of Fig. 1;

FIG. 3 is a structural schematic diagram of the strong magnetic sheet and the arc-shaped sheet of the thinning device applied to the coating edge of the transfer coater shown in FIG. 1 .

The realization of the purpose of the present invention, functional characteristics and advantages will be further described in conjunction with the embodiments.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

It should be noted that if there is a directional indication (such as up, down, left, right, front, back, top, bottom, etc.) in the embodiment of the present invention, the directional indication is only used to explain the position in a certain posture ( As shown in the accompanying drawings), if the specific posture changes, the directional indication will also change accordingly.

In this application, terms such as "installation", "connection", "connection" and "fixation" should be interpreted in a broad sense, for example, it can be a fixed connection or a detachable connection, unless otherwise clearly specified and limited. , or integrated; it may be mechanically connected or electrically connected; it may be directly connected or indirectly connected through an intermediary, and it may be the internal communication of two components or the interaction relationship between two components, unless otherwise specified limit. Those of ordinary skill in the art can understand the specific meanings of the above terms in this application according to specific situations.

It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present.

In addition, if there are descriptions involving "first", "second" and so on in the embodiments of the present invention, the descriptions of "first", "second" and so on are only for descriptive purposes, and should not be interpreted as indicating or implying Its relative importance or implicitly indicates the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In addition, the technical solutions of the various embodiments can be combined with each other, but it must be based on the realization of those skilled in the art. When the combination of technical solutions is contradictory or cannot be realized, it should be considered that the combination of technical solutions does not exist , nor within the scope of protection required by the present invention.

Due to the flow characteristics of the slurry and the baffle plate of the coater, the slurry will accumulate on both sides of the edge of the coating during transfer coating, resulting in the thickness of the edge of the coating being several microns to tens of microns thicker than the normal area , when winding after coating and drying, hundreds of thousands of layers of pole pieces are harvested into one roll, and the thickness of the edge is raised to a few millimeters, which leads to the phenomenon of bulging of the pole roll, and in severe cases, it will cause the pole pieces to break and seriously affect The uniformity of coating and winding and its follow-up process. Based on this, an embodiment of the present application provides a thinning device applied to the coated edge of a transfer coater to solve the above technical problems.

Specifically, in order to achieve the above purpose, as shown in Figures 1 to 3, an embodiment of the present invention provides a thinning device applied to the coating edge of a transfer coater, including a knife roller 10, a soft magnetic sheet 20, an arc Thin sheet 30 and strong magnetic sheet 40; Said knife roller 10 is provided with groove 11; One side of said soft magnetic sheet 20 is set as the first tape surface (not marked in the figure), and the other side is set as the first A magnetic surface (not marked in the figure); the first adhesive surface is bonded in the groove 11;

One side of the strong magnetic sheet 40 is set as a second tape surface (not marked in the figure), and the other side is set as a second tape magnetic surface (not marked in the figure), and the second tape surface and the The second magnetically charged surface is adjacent to and vertically arranged; the arc-shaped sheet 30 is bonded to the second adhesively charged surface; the second magnetically charged surface is suction-connected to the first magnetically charged surface.

In this way, the entire thinning device of the present application can be closely attached to the knife edge of the knife roller. When coating with different coating sizes, the position of the thinning device can be flexibly moved according to actual needs, so as to achieve the purpose of flexible thinning.

As a preferred embodiment, the knife roller 10 is provided with at least two grooves 11, the two grooves 11 are arranged independently of each other, and the first rubber-coated surface is arranged in one of the grooves 11 Inside. In this way, when one of the grooves 11 is broken, another groove 11 can be quickly replaced to thin the coating edge of the transfer coater, which is convenient and quick.

As a preferred embodiment, the knife roll 10 is a cylindrical knife roll, and the two grooves 11 are symmetrically arranged on the circumferential surface of the knife roll 10 .

As a preferred embodiment, the length of the knife roller 10 is adapted to the length of the soft magnetic sheet 20 ; the length of the soft magnetic sheet 20 is adapted to the length of the strong magnetic sheet 40 . In this way, the stability of the installation of the thinning device and the thinning effect can be guaranteed.

As a preferred embodiment, the curvature of the arc-shaped sheet 30 is arranged to match the circumferential surface of the cutter roll 10 , and the arc-shaped sheet 30 is arranged to be attached to the circumferential surface of the cutter roller 10 . In this way, the arc-shaped sheet 30 and the knife roller 10 can be arranged in close contact with each other, and at the same time, the structure of the arc-shaped sheet 30 can be well protected, thereby ensuring the stability of the installation of the thinning device and the thinning effect. Effect.

As a preferred embodiment, the depth of the groove 11 is 4mm, and the width of the groove 11 is 0mm˜40mm. The width of the groove 11 can be set according to actual needs, for example, it can be 5mm, or 20mm, or 40mm and so on.

As a preferred embodiment, the arc-shaped sheet 30 has a thickness of 0 μm to 50 μm, and the thickness of the arc-shaped sheet 30 can be set according to actual needs, for example, it can be 5 μm, or 30 μm, or 50 μm, etc.; The width of the arc-shaped sheet 30 is 0 mm to 20 mm, and the width of the arc-shaped sheet 30 can be set according to actual needs, for example, it can be 5 mm, or 10 mm, or 20 mm and so on.

As a preferred embodiment, the thickness of the ferromagnetic sheet 40≦2mm, the width of the ferromagnetic sheet 40 is 0mm-20mm, the width of the ferromagnetic sheet 40 can be set according to actual needs, for example, it can be 5mm , or 10mm, or 20mm or the like; the length of the strong magnetic sheet 40 is 0mm to 500mm, and the length of the strong magnetic sheet 40 can be set according to actual needs, for example, it can be 5mm, or 300mm, or 500mm and so on.

As a preferred embodiment, the soft magnetic sheet 20 is a 0.5*20mm soft magnetic sheet.

As a preferred embodiment, the soft magnetic sheet 20 is a rubber soft magnetic sheet.

As a preferred embodiment, the curved sheet 30 is a stainless steel curved sheet.

As a preferred embodiment, the strong magnetic sheet 40 is a neodymium iron boron strong magnetic sheet.

In this application, by setting the arc-shaped sheet and bonding the arc-shaped sheet to the strong magnetic sheet, the soft magnetic sheet absorbs the strong magnetic sheet to realize that the whole thinning device is close to the knife edge of the knife roller, and the edge drum edge can be coated conveniently and quickly. The position is thinned, so as to effectively reduce the output of the edge of the drum. The structure of this application does not need to modify the knife roller of the coating machine, and the installation is simple and convenient. According to the actual needs of the thinning thickness and size, the model size of the thinning sheet can be replaced at any time, which is convenient and fast, and is not limited by the coating size; it can be moved flexibly The position of the thinning device is used to achieve the purpose of flexible thinning when coating with different coating sizes. The application has a simple structure, does not need to reinforce too many parts, is convenient to install, has strong practicability, and is suitable for large-scale production.

The above is only a preferred embodiment of the present invention, and does not therefore limit the patent scope of the present invention. Under the inventive concept of the present invention, the equivalent structural transformation made by using the description of the present invention and the contents of the accompanying drawings, or direct/indirect use All other relevant technical fields are included in the patent protection scope of the present invention.

Claims (10)

1. The thinning device applied to the coating edge of the transfer coater is characterized by comprising a knife roll, a soft magnetic sheet, an arc-shaped sheet and a strong magnetic sheet; the knife roll is provided with a groove; one side surface of the soft magnetic sheet is provided with a first magnetic surface, and the other side surface of the soft magnetic sheet is provided with a first magnetic surface; the first adhesive surface is adhered in the groove;

one side surface of the strong magnetic sheet is provided with a second adhesive surface, the other side surface of the strong magnetic sheet is provided with a second magnetic surface, and the second adhesive surface is adjacent to the second magnetic surface and is vertically arranged; the arc-shaped sheet is adhered to the second adhesive surface; the second magnetic surface is connected to the first magnetic surface in an adsorption mode.

2. The skiving device for a coating edge of a transfer coater according to claim 1, wherein at least two grooves are formed in the knife roll, the two grooves are independent of each other, and the first adhesive-carrying surface is disposed in one of the grooves.

3. The skiving device for a coating edge of a transfer coater according to claim 2, wherein the knife roll is a cylindrical knife roll, and two grooves are symmetrically formed on the circumferential surface of the knife roll.

4. A skiving device for application to a transfer coater coating edge according to claim 3, wherein the length of the knife roll is adapted to the length of the soft magnetic sheet; the length of the soft magnetic sheet is matched with the length of the strong magnetic sheet.

5. The skiving device for a coating edge of a transfer coater according to claim 1, wherein the arc of the arc-shaped sheet is adapted to the circumferential surface of the knife roll, and the arc-shaped sheet is adapted to the circumferential surface of the knife roll.

6. The skiving device applied to a coating edge of a transfer coater according to claim 5, wherein the depth of the groove is 4mm, and the width of the groove is 0mm to 40mm; the thickness of the arc-shaped thin sheet is 0-50 mu m, and the width of the arc-shaped thin sheet is 0-20 mm.

7. The thinning apparatus for a coating edge of a transfer coater according to claim 6, wherein the thickness of the strong magnetic sheet is less than or equal to 2mm, the width of the strong magnetic sheet is 0mm to 20mm, and the length of the strong magnetic sheet is 0mm to 500mm.

8. The skiving device for application to a coating edge of a transfer coater according to claim 2, wherein the soft magnetic sheet is a rubber soft magnetic sheet.

9. The skiving device for application to a coating edge of a transfer coater according to claim 8, wherein the arcuate sheet is a stainless steel arcuate sheet; the strong magnetic sheet is neodymium iron boron strong magnetic sheet.

10. The skiving device for application to the coating edge of a transfer coater according to claim 1, wherein the soft magnetic sheet is a 0.5 x 20mm soft magnetic sheet.

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