KR101962779B1 - Press roll cleaning device for manufacturing electrode of secondary battery - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a press roll cleaning apparatus for manufacturing a secondary battery electrode capable of automatically cleaning press rolls while performing a roll press operation, So that the surface of the press roll is cleaned. The press roll cleaning apparatus for manufacturing a secondary battery electrode according to the present invention comprises a loading roll on which a cleaning sheet to be subjected to press roll cleaning is wound and a cleaning sheet loading and unloading unit having an unloading roll for winding a cleaning sheet used for press roll cleaning, Unloading means; First and second cleaning rolls arranged vertically so as to contact the cleaning sheet with the surface of the press roll while maintaining the tension of the cleaning sheet and a cleaning sheet passing between the first and second cleaning rolls, And a polishing means having a plurality of cleaning liquid spray nozzles for spraying a cleaning liquid onto the cleaning sheet guided to the first cleaning roll side.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a press roll cleaning apparatus for manufacturing a secondary battery electrode,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a roll press used for manufacturing a secondary battery electrode, and more particularly, to a press roll cleaning apparatus for manufacturing a secondary battery electrode capable of simultaneously cleaning a press roll while performing a roll press operation .

2. Description of the Related Art Generally, a secondary battery is a rechargeable battery capable of repeatedly charging and discharging by moving an anode in an electrolyte between an anode and a cathode insulated by a separator.

As can be appreciated by anyone, the manufacturing process of the secondary battery is largely composed of the electrode process, the assembling process, and the chemical process, and a roll press may be used in the manufacturing process.

For example, the electrode process can be divided into an active material mixing process, an electrode coating process, a rolling process, a slitting process, and a winding process. In the rolling process, a roll press is used.

In other words, in order to increase the capacity density by reducing the thickness of the electrode after the coating process and to increase the adhesion between the electrode current collector and the electrode active material, the rolling process is performed by passing the electrode through two press rolls heated at a high temperature, Compression.

However, in the rolling process described above, there is a problem that serious contamination occurs on the surface of the press roll by the electrode active material. To solve this problem, there is another problem that the operator has to manually clean the press roll under the stopped state .

The related prior arts include "Korean Registration No. 10-1713102 (Registration Date: February 28, 2017) and Korean Registration No. 10-1784034 (Registration Date: Sep. 26, 2017).

The present invention is to provide a press roll cleaning apparatus for manufacturing a secondary battery electrode capable of automatically cleaning press rolls while performing a roll press operation without having to stop the roll press operation.

The technical objects to be achieved by the present invention are not limited to the above-mentioned technical problems.

In order to accomplish the above object, the present invention provides a press roll cleaning apparatus for manufacturing secondary battery electrodes for cleaning a surface of a press roll mounted on a frame rotatably supporting press rolls, A cleaning sheet loading / unloading means having a loading roll on which a cleaning sheet to be subjected to press roll cleaning is wound, and an unloading roll for winding a cleaning sheet used for press roll cleaning; First and second cleaning rolls arranged vertically so as to contact the cleaning sheet with the surface of the press roll while maintaining the tension of the cleaning sheet and a cleaning sheet passing between the first and second cleaning rolls, And a polishing means having a plurality of cleaning liquid spray nozzles for spraying a cleaning liquid onto the cleaning sheet guided to the first cleaning roll side have.

Specifically, the loading rolls and the unloading rolls are horizontally disposed and rotatably supported between the first and second fixing brackets fixedly mounted on both sides of the frame, and on the outer side of the first or second fixing brackets, A driving motor that winds the cleaning sheet that has been cleaned by the press roll on the unloading roll can be mounted.

Specifically, the first and second guide cylinders are fixedly mounted with the first and second sliders, respectively. In the first fixing bracket adjacent to the first guide cylinder, the first sliding groove, into which the first slider is slidably fitted, A second sliding groove formed in the second fixing bracket adjacent to the second guide cylinder so that the second slider slidably fits in the width direction of the second fixing bracket, In the second sliding groove, a plurality of position adjusting holes are formed so as to be spaced along the longitudinal direction of the first and second sliding grooves, and a position adjusting slot facing the position adjusting holes is formed in each of the first and second sliders And the first and second sliders are positionally adjusted by the bolts and the nuts fastened through the position adjusting holes and the position adjusting holes to the first and second fixing brackets, And can be fixedly mounted.

Specifically, the first and second cleaning rolls are horizontally disposed adjacent to the press roll, and one end and the other end of the first and second cleaning rolls are rotatably supported on the first and second support brackets, respectively, The first support bracket is rotatably connected to the first cylinder rod of the first guide cylinder in a vertical direction and the second support bracket is rotatably connected to the second cylinder rod of the second guide cylinder in the up-and-down direction .

More specifically, the first and second connecting brackets are fixedly mounted to the extended ends of the first and second cylinder rods, respectively. The center of the first connecting bracket and the first supporting bracket, and the center of the second connecting bracket and the second supporting bracket The central portion can be connected to be rotatable in the vertical direction via a pivot pin.

Specifically, the cleaning liquid injection nozzles may be mounted on a cleaning liquid supply line extending along the width direction of the cleaning sheet while being fixed to the first connection bracket or the second connection bracket.

INDUSTRIAL APPLICABILITY As described above, the press roll cleaning apparatus for manufacturing a secondary battery electrode according to the present invention is advantageous in that the surface of the press roll can be automatically cleaned while performing the roll press operation without stopping the roll press operation, There is an advantage that the cleaning reliability can be increased.

In addition, since the first and second cleaning rolls for guiding the cleaning sheet can completely and continuously bring the cleaning sheet into contact with the surface of the press roll, the press roll cleaning apparatus for manufacturing a secondary electrical electrode according to the present invention, Which is advantageous in that it can be maximized.

1 is a view showing a roll press for producing a secondary battery electrode equipped with a press roll cleaning apparatus according to the present invention,
Fig. 2 is an enlarged view of a press roll cleaning apparatus for cleaning the surface of a press roll disposed on the upper side of the press roll cleaning apparatus shown in Fig. 1,
Fig. 3 is a view of the press roll cleaning apparatus shown in Fig. 2 viewed from the lower side, and
4A to 4C are views schematically showing an operating state of a press roll cleaning apparatus for manufacturing a secondary battery electrode according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same components are denoted by the same reference symbols whenever possible. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

1 is a view showing a roll press for manufacturing a secondary battery electrode equipped with a press roll cleaning apparatus according to the present invention.

The press roll cleaning apparatus 100 according to the present invention is provided with a pair of press rolls 12a and 12b which are rotated by receiving a rotary power from a normal roll press 10, And is mounted on a frame 14 that rotatably supports the press rolls 12a and 12b.

Here, the press roll cleaning apparatus 100 according to the present invention is mounted on the frame 14 so as to face the press rolls 12a and 12b, respectively, without interfering with the charged electrode material (not shown).

Meanwhile, since the roll press 10 is a well-known technique widely used throughout the industry, a detailed description of the roll press 10 is omitted in the present invention.

Figs. 2 and 3 are enlarged views of the press roll cleaning apparatus shown in Fig. 1. Fig.

The press roll cleaning apparatus 100 according to the present invention is provided with a cleaning sheet loading / unloading means 110 (not shown) that unwinds the wound cleaning sheet S and winds the cleaning sheet S used for cleaning the press rolls 12a and 12b And the cleaning sheet S is brought into contact with the surface of the press rolls 12a and 12b while maintaining the tension of the cleaning sheet S released by the cleaning sheet loading / unloading means 110, (12a, 12b) to be cleaned.

Here, the cleaning sheet S may be a non-woven fabrics having a sheet shape.

First, the cleaning sheet loading / unloading means 110 includes a loading roll 112 on which a cleaning sheet S to be subjected to the cleaning of the press rolls 12a and 12b is wound, And an unloading roll 114 for winding the cleaning sheet S thereon.

That is, the cleaning sheet S is unwound from the loading roll 112 at the time of cleaning the surfaces of the press rolls 12a and 12b, and is wound around the unloading roll 114 after cleaning the surfaces of the press rolls 12a and 12b.

The loading roll 112 and the unloading roll 114 are disposed between the first and second fixing brackets 116a and 116b vertically fixed to both sides of the frame 14 of the roll press 10 And is horizontally disposed and rotatably supported.

A cleaning sheet S (S) is provided on the outer side of one of the fixing brackets 116a and 116b, and the unloading roll 114 is provided with a cleaning sheet S (Not shown).

The drive motor 118 is connected to the unloading roll 114 via conventional power transmission means, for example gears or chains and chain sprockets.

In other words, the driving motor 118 provides rotational power to allow the unloading roll 114 to be rotated, whereby the unloading roll 114 is provided with a cleaning sheet S which has been cleaned by the press rolls 12a and 12b, And in the loading roll 112, the cleaning sheet S is released.

Here, the connection relationship between the driving motor 118 and the unloading roll 114 via the power transmission means is a well-known technology, and thus a detailed description thereof will be omitted.

The polishing means 120 includes first and second cleaning rolls 122 and 124 for contacting the cleaning sheet S with the surfaces of the press rolls 12a and 12b while maintaining the tension of the cleaning sheet S, The first and second cleaning rollers 122 and 124 are moved and supported so that the cleaning sheet S passing between the first and second cleaning rollers 122 and 124 is brought into contact with the press rolls 12a and 12b 1 and second guide cylinders 128a, 128b.

The first and second cleaning rolls 122 and 124 are horizontally disposed adjacent to the press rolls 12a and 12b as shown in the figure and the first and second cleaning rolls 122 and 124 are disposed horizontally, The cleaning sheet S passing between the two cleaning rolls 122 and 124 is disposed so as to be spaced apart in the vertical direction so as to be contacted with the press rolls 12a and 12b for cleaning.

One end and the other end of the first and second cleaning rolls 122 and 124 vertically spaced from each other are rotatably supported by the first and second support brackets 126a and 126b, respectively.

That is, one end of the first cleaning roll 122 and one end of the second cleaning roll 124 are rotatably supported on the first support bracket 126a so as to be spaced apart from each other in the vertical direction, The other end of the second cleaning roll 124 and the other end of the second cleaning roll 124 are rotatably supported by the second support bracket 126b so as to be spaced apart from each other in the vertical direction.

The first cleaning roll 122 rotatably supported on the first and second support brackets 126a and 126b guides the cleaning sheet S released from the loading roll 112 to the second cleaning roll 124 side And the second cleaning roll 124 guides the cleaning sheet S toward the unloading roll 114 side.

Preferably, the first and second cleaning rolls 122 and 124 may be conventional rubber rolls whose surfaces are surrounded by a rubber layer having elasticity.

The first and second guide cylinders 128a and 128b are disposed at one end side and the other end side of the first and second cleaning rolls 122 and 124 respectively and the first and second guide cylinders 128a and 128b 1 and the second cylinder rods 130a, 130b are connected to the adjacent first and second support brackets 126a, 126b.

To this end, first and second connection brackets 132a and 132b are fixedly mounted to the extended ends of the first and second cylinder rods 130a and 130b, respectively. At this time, the first connection bracket 132a and the first support bracket 132b The central portion of the second support bracket 126a and the central portion of the second support bracket 132b and the second support bracket 126b are rotatably connected via the pivot pin 134 in the vertical direction.

That is, the first and second support brackets 126a and 126b for supporting both ends of the first and second cleaning rolls 122 and 124 are connected to the first and second connection brackets 132a and 132b via the rotation pin 134, The first and second cleaning rolls 122 and 124 simultaneously contact the press rolls 12a and 12b when the press rolls 12a and 12b are cleaned, The cleaning sheet S passing between the first cleaning rollers 122 and 124 and the second cleaning rollers 122 and 124 is in wide contact with the surfaces of the press rolls 12a and 12b to form a wide cleaning area.

The first and second guide cylinders 128a and 128b are fixedly mounted on the adjacent first and second fixing brackets 116a and 116b, respectively.

To this end, first and second sliders 136a and 136b are fixedly mounted on the first and second guide cylinders 128a and 128b, respectively, and first and second fixed brackets 116a and 116b are fixed on the first and second guide cylinders 128a and 128b, respectively. The first and second sliding grooves 138a and 138b in which the second sliders 136a and 136b are slidably fitted are formed along the width direction of the first and second fixing brackets 116a and 116b.

At this time, the first and second sliding grooves 138a and 138b are formed with a plurality of positioning holes 140a and 140b spaced along the longitudinal direction of the first and second sliding grooves 138a and 138b, The first and second sliders 136a and 136b are formed with position adjusting holes 142a and 142b facing the position adjusting holes 140a and 140b. The first and second sliders 136a and 136b are positioned And fixed to the first and second fixing brackets 116a and 116b by bolts and nuts fastened through the holes 140a and 140b and the position adjusting slots 142a and 142b.

That is, the first and second guide cylinders 128a and 128b are disposed in the first and second cylinder rods 130a and 130b by applying a stroke of the first and second cylinder rods 130a and 130b and a diameter of the press rolls 12a and 12b, And can be fixed to the fixing brackets 116a and 116b.

Meanwhile, the polishing means 120 further includes a plurality of cleaning liquid spray nozzles 144 for spraying the cleaning liquid onto the cleaning sheet S released from the loading roll 112.

The cleaning liquid injection nozzles 144 are fixed between the first and second connection brackets 132a and 132b so as not to interfere with the cleaning sheet S guided to the first cleaning roll 122 side as shown in the drawing, S extending along the width direction of the cleaning liquid supply line 146. [

The plurality of cleaning liquid injection nozzles 144 thus mounted inject the cleaning liquid supplied from the cleaning liquid tank (not shown) into the cleaning liquid supply line 146 to the cleaning sheet S, and through the plurality of cleaning liquid jet nozzles 144 The cleaning sheet S with the sprayed cleaning liquid is passed between the first cleaning roll 122 and the second cleaning roll 124 to clean the surface of the press rolls 12a and 12b.

Here, the connection relationship between the cleaning liquid supply line 146 and the cleaning liquid tank and the cleaning liquid stored in the cleaning liquid tank are supplied to the cleaning liquid supply line 146 so as to be sprayed through the cleaning liquid injection nozzle 144, so that detailed description is omitted .

Hereinafter, an operation state of the press roll cleaning apparatus 100 for manufacturing a secondary battery electrode according to the present invention will be briefly described.

The cleaning sheet S wound around the loading roll 112 is unloaded and the first cleaning roll 122 and the second cleaning roll 124 are sequentially discharged before the electrode manufacturing operation using the roll press 10 is performed, And then the end of the released cleaning sheet S is fixed to the unloading roll 114 (see Fig. 4A).

The first and second guide cylinders 128a and 128b are disposed so that the cleaning sheet S passing between the first and second cleaning rolls 122 and 124 can contact the surfaces of the press rolls 12a and 12b to be cleaned. .

That is, the first and second guide cylinders 128a and 128b extend the first and second cylinder rods 130a and 130b, and one of the first and second cleaning rolls 122 and 124 is first pressed When the first and second cylinder rods 130a and 130b are continuously extended under such a condition, the first and second cleaning rolls 122 and 124 move the rotation pin 134 to the center Whereby the first and second cleaning rolls 122 and 124 simultaneously abut the press rolls 12a and 12b.

The cleaning sheet S passing between the first and second cleaning rolls 122 and 124 is also pressed against the press rolls 12a and 12b at the same time as the first and second cleaning rolls 122 and 124 are pressed against the press rolls 12a and 12b at the same time, (See Fig. 4B).

When the cleaning operation for the press rolls 12a and 12b is completed as described above, the press rolls 12a and 12b are operated to perform the operation of the roll press 10, and the press roll cleaning apparatus 100 according to the present invention, The press rolls 12a and 12b are cleaned (see Fig. 4C).

In other words, when the press roll cleaning apparatus 100 according to the present invention is operated, the driving motor 118 rotates the unloading roll 114, and the cleaning liquid spray nozzles 144 discharge the cleaning liquid to the cleaning sheet S The cleaning sheet S having the cleaning liquid adhered thereto is wound around the unloading roll 114 by the driving motor 118 via the first and second cleaning rolls 124 and is wound around the first and second cleaning rolls 122 , And 124) clean the foreign matter so that the surfaces of the press rolls 12a and 12b are cleaned.

Here, the cleaning of the press rolls 12a and 12b is continuously performed until the cleaning sheet S wound around the loading roll 112 is fully released. To this end, the loading roll 112 and the unloading roll 114 Are rotatably supported by the first and second fixing brackets 116a and 116b in a rotatable manner.

The press roll cleaning apparatus 100 according to the present invention thus formed can automatically clean the surfaces of the press rolls 12a and 12b while performing the roll press operation 10 without stopping the operation of the roll press 10. [ And at the same time, the cleaning reliability can be increased.

In the press roll cleaning apparatus 100 according to the present invention, the first and second cleaning rolls 122 and 124 for guiding the cleaning sheet S are disposed on the surfaces of the press rolls 12a and 12b, respectively, So that the cleaning effect of the press rolls 12a and 12b can be maximized.

The press roll cleaning apparatus 100 for manufacturing a secondary battery as described above is not limited to the configuration and operation of the embodiments described above. The embodiments may be configured so that all or some of the embodiments may be selectively combined so that various modifications may be made.

100: Press roll cleaning device for manufacturing secondary battery electrode
110: cleaning sheet loading / unloading means 112: loading roll
114: unloading roll 116a: first fixing bracket
116b: second fixing bracket 118: driving motor
120: Polishing means 122: First cleaning roll
124: second cleaning roll 126a: first support bracket
126b: second support bracket 128a: first guide cylinder
128b: second guide cylinder 130a: first cylinder rod
130b: second cylinder rod 132a: first connection bracket
132b: second connection bracket 134: first rotation pin
136a: first slider 136b: second slider
138a: first sliding groove 138b: second sliding groove
140a, 140b: Position adjustment holes 142a, 142b: Position adjustment slots
144: cleaning liquid jetting nozzle 146: cleaning liquid supply line

Claims (6)

A press roll cleaning apparatus for manufacturing a secondary battery electrode, which is mounted on a frame rotatably supporting press rolls and cleans the surface of the press roll,
In the press roll cleaning apparatus for manufacturing a secondary battery electrode,
A cleaning sheet loading / unloading means having a loading roll on which a cleaning sheet for carrying out the press roll cleaning is wound, and an unloading roll for winding up the cleaning sheet used for the press roll cleaning; And
First and second cleaning rolls disposed up and down so as to contact the cleaning sheet with the surface of the press roll while maintaining the tension of the cleaning sheet; First and second guide cylinders for moving the first and second cleaning rolls to contact the surface of the press roll and a plurality of cleaning liquid spray nozzles for spraying the cleaning liquid onto the cleaning sheet guided to the first cleaning roll side The polishing apparatus comprising:
Wherein the first and second cleaning rolls are horizontally disposed at positions adjacent to the press roll, one end and the other end of the first and second cleaning rolls are rotatably supported on the first and second support brackets, However,
The first support bracket is rotatably connected to the first cylinder rod of the first guide cylinder in a vertical direction and the second support bracket is connected to the second cylinder rod of the second guide cylinder so as to be vertically rotatable And,
First and second connection brackets are fixedly mounted on extended ends of the first and second cylinder rods, respectively,
Wherein a central portion of the first connection bracket and the first support bracket and a central portion of the second connection bracket and the second support bracket are rotatably connected via a pivot pin so as to be vertically rotatable.
The method according to claim 1,
Wherein the loading roll and the unloading roll are horizontally disposed and rotatably supported between first and second fixing brackets fixedly mounted on both sides of the frame,
And a drive motor for winding the cleaning sheet, which has been cleaned by the press roll, is mounted on the unloading roll while the cleaning sheet is released from the loading roll on the outer side of the first or second fixing bracket, Roll cleaning device.
The method of claim 2,
The first and second guide cylinders are fixedly mounted with first and second sliders, respectively,
A first sliding groove in which the first slider is slidably fitted is formed in the first fixing bracket adjacent to the first guide cylinder along a width direction of the first fixing bracket,
A second sliding groove in which the second slider is slidably fitted is formed along the width direction of the second fixing bracket in the second fixing bracket adjacent to the second guide cylinder,
Wherein the first and second sliding grooves are formed with a plurality of position adjusting holes spaced along the longitudinal direction of the first and second sliding grooves, A position adjusting slot is formed,
Wherein the first and second sliders are fixedly mounted on the first and second fixing brackets by bolts and nuts fastened through the position adjusting holes and the position adjusting slots, respectively, to the first and second fixing brackets, .
delete delete The method according to claim 1,
Wherein the cleaning liquid injection nozzles are mounted on a cleaning liquid supply line extending along a width direction of the cleaning sheet while being fixed to the first connection bracket or the second connection bracket.

Images