KR20190018240A - Apparatus for cleaning a surface of an electrode plate cutter - Google Patents

Abstract

Disclosed is a cleaning device for a secondary cell lead tap cutting apparatus, which gets in contact with the external surface of a lower portion of a cutting blade for cutting a lead tap while reciprocating vertically in a lead tap cutting apparatus in order to automatically remove foreign matters. The cleaning device (70) for automatically cleaning the surface of a cutting blade of a lead tap cutter (20) includes: a pneumatic cylinder (72); a fixing block (74) integrated to an external surface of an end portion of the pneumatic cylinder (72) and extending to a predetermined length in a rod shape; and a moving block (76), which is vertically movable on the fixing block (74), wherein the moving block has a cleaning unit of which a free end portion gets in contact with the surface of the cutting blade of the lead tap cutter (20) to clean. The cleaning unit includes: cleaning unit fixing pieces (77a, 77b) detachably fixed and mounted at the free end portion of the moving block (76); and a cleaning member (79) attached onto outer surfaces of the cleaning unit fixing pieces (77a, 77b) facing the lead tap cutter (20). Preferably, the cleaning member (79) is made of nonwoven fabric for removing dust using static electricity.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a cleaning apparatus for a secondary battery lead-

The present invention relates to a cleaning device for a secondary battery lead tapped cutter, and more particularly to a cleaning device for a secondary battery lead tapped cutter which contacts a lower surface of a cutting blade for vertically reciprocating and cutting an electrode sheet, And more particularly, to a cleaning apparatus for a secondary battery lead tapped cutting device.

Herein, the background art relating to the present invention is provided, and they are not necessarily referred to as known arts.

A rechargeable battery is a rechargeable battery that can be recharged after use. Examples of the secondary battery include a lithium ion battery, a lithium polymer battery, a lead acid battery, an alkaline secondary battery, and a nickel-hydrogen battery. Rechargeable batteries are mainly applied to compact and lightweight electric / electronic devices such as cell phones, notebook computers, and camcorders that have been actively developed and produced in recent years. As a result of current flow, materials are oxidized and reduced, It is a combination of materials so that the process of generating electricity by reduction can be repeated.

The secondary battery is composed of four core materials such as a separation membrane, a cathode material, an anode material, and an electrolyte, and the electrode assembly is built in a battery case together with an electrolyte solution. In order to manufacture a unit electrode electrode assembly, a plurality of unit electrode assemblies are stacked in order from an electrode sheet assembly in which two or more continuous electrode sheets coated with an electrode active material on one or both surfaces are stacked in a unit And the electrode is cut at intervals. Typically, an electrode sheet continuously fed by a conveyor or conveying rollers is cut by a vertically reciprocating cutting device. At this time, the cutting operation by the cutting device is repeated several times, so that foreign matter is inevitably generated. Such foreign matter may be mixed in the cut lead taps or diffused into peripheral devices, which may lead to defective electrode assemblies. Therefore, related technologies for solving such problems are being developed.

Korean Patent Publication No. 10-2006-0027258 (published on Mar. 27, 2006) discloses a method of automatically adjusting the setting of the upper cutter and the lower cutter in the case of cutting the lead tab, thereby minimizing the occurrence of burrs, There is disclosed a lead tab cutting apparatus which removes foreign matter generated during cutting to prevent defects of the electrode assembly. In this patent, a foreign material removing means is mounted at a position adjacent to an upper cutter and a lower cutter so as to move forward and backward by a shaft, and a foreign matter inlet and a foreign matter outlet for sucking foreign substances generated in the cutting of the lead tab are provided around the foreign matter removing means. A structure for removing foreign matter was adopted.

However, this method has a problem in that the arrangement of the parts around the upper cutter and the lower cutter becomes complicated because parts having a relatively complicated structure for sucking and discharging the foreign substances are added, resulting in poor economical efficiency.

Korean Patent Registration No. 10-115299 (registered on Feb. 06, 2012) discloses a cutting apparatus for a secondary battery, in which a cut surface can be kept constant even if the width of the cutter is reduced according to a polishing operation of the cutter, A polarizing plate cutting device for a secondary battery capable of minimizing the occurrence of damage or foreign matter. In this patent, the conventional plate cutter apparatus is fixed to the lower cutter holder in order to solve the problem that not only the cutter blade is damaged at the time of cutting operation because the fastening surfaces of the upper cutter and the lower cutter do not coincide with each other, The fastening surface of the lower cutter and the fastening surface of the upper cutter fixed to the upper cutter holder are made to coincide with each other.

However, this method is complicated in structure and low in versatility because the cutter has to be made in a double structure in order to prevent the cutter blade from being damaged or to prevent the generation of foreign matter, and the generation of foreign matter can not be completely solved, There was also a difficult problem.

Korean Patent Publication No. 10-2006-0027258 (Published Date: March 27, 2006) Korean Registered Patent No. 10-115299 (Registration date: February 06, 2012)

Disclosure of the Invention The present invention provides a cleaning device for a secondary battery lead tab cutting apparatus that automatically removes foreign matters by contacting a lower surface of a cutting blade for cutting an electrode sheet while vertically reciprocating in a secondary battery lead tapped cutting device For the purpose of.

The present invention is not intended to be exhaustive or to limit the scope of the present invention to the full scope of the present invention. of its features).

According to an aspect of the present invention, there is provided a lead tab support for supporting a continuous electrode sheet, a horizontal frame for supporting the lead tab support, The lead tab cutter for cutting the electrode sheet to be cut, the upward / downward block to which the lead tab cutter is attached at the lower side, and the up / down cylinder for moving up / down the up / down block, And a cutting device for automatically cleaning the cutting edge surface of the lead tab cutter that cuts the lead tab while descending with the ascending /

The cleaning device includes:

Pneumatic cylinder;

A fixed block integrally fixed to an outer surface of one end of the casing of the pneumatic cylinder and extending in a rod shape by a predetermined length; And

And a movable block movable in the longitudinal direction on the fixed block and provided at a free end thereof with a cleaning unit for cleaning in contact with the cutting edge surface of the lead tab cutter,

Wherein the cleaning unit cleans the electrode sheet supplied onto the lead tab support by contacting the surface of the cutting edge of the lead tab cutter immediately after the lead tab cutter is cut by a predetermined length, And a cleaning device.

In a cleaning apparatus for a lid tab cutting apparatus according to an aspect of the present invention, a guide rail extends in the longitudinal direction on one surface of the fixed block facing the movable block, and a surface of the movable block facing the fixed block Wherein the LM guide is reciprocated longitudinally along the guide rail and the fixed end of the movable block is fixedly connected to the piston rod distal end of the pneumatic cylinder.

The fixed block is disposed such that one end thereof is fixed to the horizontal frame and is fixedly supported by a rod-shaped horizontal guide extended horizontally from the horizontal frame and a support block fixed on the horizontal frame.

A semicircular groove is formed in the middle of the movable block at a position near the free end of the movable block to sense the position of the cleaning unit using light passing through the semicircular groove, Is cut only by the lead tab cutter.

The cleaning unit includes:

Cleaning member fixing pieces integrally fixed to be detachably attached to the free end of the movable block; And

And a cleaning member detachably attached to one surface of the cleaning member fixing members.

Wherein the cleaning member fixing pieces are spaced apart from the lead tab cutter by a predetermined distance and the second fixing piece of the cleaning member fixing pieces protrudes by a predetermined length in a direction perpendicular to the lead tab cutter, Wherein one end of the fixing member is detachably mounted to the free end of the movable block by a second fixing screw, and the first fixing member of the cleaning member fixing members is integrally formed with the first fixing screw on one side of the second fixing member And the cleaning member is detachably attached to one surface of the first fixing piece and the second fixing piece facing the lead tab cutter.

Preferably, the cleaning member comprises a dust-removing nonwoven fabric using static electricity.

According to the present invention, the cleaning device of the secondary battery lead taps cutting device is characterized in that the lead tab cutting device reciprocates in the vertical direction by the operation of the lifting / lowering cylinder and cuts the electrode sheet, A cleaning member made of a dust-removing non-woven fabric is automatically brought into contact with the cleaning member to completely remove foreign matter. Therefore, the convenience of work and the productivity are increased, and the reliability of the product is increased.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view of an entire configuration of a secondary battery lead tab cutting apparatus having a cleaning device according to a preferred embodiment of the present invention; FIG.
FIG. 2 is a schematic side view of the secondary battery lead tab cutting apparatus shown in FIG. 1; FIG.
FIG. 3 is a schematic bottom view of the secondary battery lead tab cutting apparatus shown in FIG. 1; FIG.
4 illustrates a cleaning apparatus according to a preferred embodiment of the present invention;
FIG. 5 and FIG. 6 are views showing operation states of a secondary battery lead tab cutting apparatus having a cleaning device according to a preferred embodiment of the present invention. FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of a cleaning apparatus for a secondary battery lead tab cutting apparatus according to the present invention will be described in detail with reference to the drawings.

It is to be understood, however, that the scope of the present invention is not limited to the embodiments described below, and those skilled in the art of the present invention, other than the scope of the present invention, It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention.

In addition, the terms used below are selected for convenience of explanation. Therefore, the technical meaning of the present invention should not be limited to the prior meaning, but should be properly interpreted in accordance with the technical idea of the present invention.

1 and 2 show a configuration of a secondary battery lead tab cutting apparatus having a cleaning device according to a preferred embodiment of the present invention.

Referring to FIGS. 1 and 2, the apparatus for cutting the secondary battery lead taps 10 includes a lead tab support 12 on which a continuous electrode sheet having electrode active materials coated on both sides is seated, A lead tab cutter 20 for cutting an electrode sheet continuously fed on the lead tab support base 12, The lead tab support 12 is moved in the horizontal direction to withdraw the lead tabs cut by the lead tab cutter 20, (See FIGS. 5 and 6) in accordance with the cutting operation of the lead tab cutter 20 toward the lead tab support base 12 (see FIG. 5 and FIG. 6) A lead tab transfer device (not shown) for transfer at a speed, and And a support transfer device 60 for transferring the lead tab cut by the cutter group lead tab 20 to the bottom of the vacuum chuck 40.

The lead tab support 12 moves in and out of the opening (not shown) formed in the middle of the horizontal frame 14. The lead tab support base 12 receives and supports the electrode sheet S (refer to FIGS. 5 and 6) supplied by the lead tab transfer device 50. In accordance with the cutting operation of the lead tab cutter 20, After the sheet is cut, the cut lid tab is moved toward the vacuum chuck 40 by the support table transfer device 60 so as to supply the lower side of the vacuum chuck 40.

6, when the lead tab support 12 carries the lead tabs cut below the point of contact with the vacuum chuck 40, the vacuum chuck 40 is cut The lead tab support 12 is sucked by the vacuum line 42 extending from an external vacuum source (not shown) and transferred to the next working end, And returned to the home position.

5 and 6, a lead-tab transfer device (not shown) to be positioned on the right-hand side of the electrode sheet S includes a lead tab support 12, a continuous electrode sheet having electrode active material applied on both sides thereof, As shown in FIG. The lead tab transfer device includes a transfer roller (not shown) and a gripper (not shown) and the like. The lead tab transfer device includes a cutting operation of the lead tab cutter 20, The electrode sheet S is transferred to the lead tab cutter 20 in consideration of the gap between the electrode sheet S and the electrode sheet S.

The lead tab cutter 20 is attached to the lower side of the ascending / descending block 22. The lead tab cutter 20 performs an operation of cutting the electrode sheet S as the ascending / descending block 22 is lowered by the operation of the ascending and descending cylinder 30 disposed above the ascending and descending block 22 A compression spring 18 (see FIG. 6) is disposed on the radially outer side of the first projection 16 protruding upward by a predetermined length upward from both upper side surfaces of the horizontal frame 14 in order to softly accommodate such operation do. Corresponding to this, the second projecting portion 24 is protruded downward by a predetermined length on the lower surface of the ascending / descending block 22.

Meanwhile, the cleaning device 70 of the lead tapped cutting device according to the preferred embodiment of the present invention includes a rod-shaped horizontal guide 80 (shown in FIG. 1) which is fixed to the horizontal frame 14 at one end thereof and extends horizontally outwardly from the horizontal frame 14 (See Fig. 5) fixed on the horizontal frame 14, and a separate support block 82 (see Fig.

The cleaning device 70 of the lead tapped cutting device performs a function of automatically cleaning the cutting edge surface of the lead tab cutter 20 which is attached to one side of the lower part of the up / .

3 and 4 illustrate the configuration of the cleaning device 70 of the secondary battery lead tapped device.

3 and 4, the cleaning device 70 of the secondary cell lead tapped cutting device is integrally fixed to the outer surface of one end of the casing of the pneumatic cylinder 72 and the pneumatic cylinder 72, And a movable block 76 which is movable in the longitudinal direction on the fixed block 74. The movable block 76 is movable in the vertical direction. As described above, the fixed block 74 includes a rod-shaped horizontal guide 80 (see Fig. 5) fixed to the horizontal frame 14 and extending horizontally outward from the horizontal frame 14, a horizontal frame 80 (See Fig. 5) fixed on the supporting block 82 (see Fig. 5).

On one side of the fixed block 74 facing the movable block 76, a guide rail 73 is extended in the longitudinal direction. An LM guide 75 is attached on one side of the movable block 76 facing the fixed block 74 and the LM guide 75 reciprocates longitudinally along the guide rail 73 of the fixed block 74 do. At this time, the fixed end of the movable block 76 is fixedly connected to the distal end of the piston rod 71 of the pneumatic cylinder 72. A pneumatic feed line is fluidly connected to the pneumatic cylinder 72 at a location near the piston rod 71. A semi-circular groove 76a is formed in the middle of the movable block 76 at a position near the free end of the movable block 76. This allows the position of the cleaning unit to be sensed using light (optical signal) And to set the lead tab cutter 20 to cut only when light passes through the lead tab cutter 20. That is, when the cleaning device 70 is operated for cleaning, the movable block 76 moves, and during the cleaning process, the optical signal is cut off, so that the lead tab cutting operation by the lead tab cutter 20 is not performed .

On the other hand, on the free end of the movable block 76 of the cleaning device 70, cleaning member fixing pieces 77a and 77b are detachably mounted. That is, one end of the second fixing piece 77b of the cleaning member fixing pieces 77a and 77b is detachably mounted to the free end of the movable block 76 by the second fixing screw 78b. At this time, the second fixing piece 77b protrudes by a predetermined length in a direction perpendicular to the lead tab cutter 20 and is spaced apart from the lead tab cutter 20 by a predetermined distance. A cleaning member 79 is detachably attached to one surface of the second fixing piece 77b facing the lead tab cutter 20.

A first fixing piece 77a is integrally fixed to the upper side of the second fixing piece 77b by a first fixing screw 78a. One surface of the first fixing piece 77a is fixed to the elevating / lowering block 22, A cleaning member 79 is detachably attached to one surface of the first fixing piece 77a facing the lead tab cutter 20 so as to be spaced apart from the lead tab cutter 20 fixedly attached to one side of the lead tab cutter 20, Respectively.

The cleaning member 79 attached to one surface of the first fixing piece 77a and the second fixing piece 77b is preferably made of fine fibers. More preferably, the cleaning member 79 may be made of a dust-removing nonwoven fabric using static electricity. The cleaning member 79 is detachably attached to one surface of the first fixing piece 77a and the second fixing piece 77b by an adhesive means such as double-sided tape or the like. When the cleaning member 79 becomes dirty or wears out by a predetermined number of times, only the cleaning member 79 can be replaced and used. Alternatively, the cleaning member fixing members 77a and 77b and the cleaning member 79 may be replaceable with one replaceable component.

Hereinafter, the operation of the cleaning device 70 of the lead tapped cutting device configured as described above with reference to FIGS. 4 to 6 will be briefly described.

The electrode sheet S is continuously fed toward the lead tab support base 12 by a lead tap feeding device (not shown) positioned on the right outside in Fig. 5, and at this time, the lead tab cutter 20 is moved up / 30, the electrode sheet S that has been introduced onto the lead tab support base 12 while being lowered together with the lifting / lowering block 22 is cut to a predetermined size.

As soon as the electrode sheet S is cut by the lead tab cutter 20, the movable block 76 of the cleaning device 70 moves along the guide rail 73 of the fixing block 74 toward the lead tab cutter 20 A cleaning member 79 attached to one surface of the cleaning member fixing pieces 77a and 77b provided on the free end of the movable block 76 reaches the lead tab cutter 20 Of the cutting edge in the advancing direction. At this time, since the cleaning member 79 is made of fine fibers or more preferably, a dust-removing nonwoven fabric using static electricity, the foreign matter left on the cutting edge surface of the lead tab cutter 20 is cleanly removed.

The cleaning member 79 moves longitudinally in the advancing direction while sweeping the cutting edge surface of the lead tab cutter 20, and then moves backward to be proximal to the lead tab cutter 20. Immediately after the electrode sheet S is cut by the lead tab cutter 20, apart from the operation of the cleaning device 70, the cut lead tabs are lifted up to the lead tab support stand 12, 60 to the lower side of the waiting vacuum chuck 40 in advance. Then, the vacuum chuck 40 vacuum-sucks the cut lead tabs and feeds them to the next working end, and the lead tab supports 12 are returned to the lower side of the ascending / descending block 22.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the present invention as defined by the following claims. It can be understood that it is possible.

10: Lead tab cutting device 12: Lead tab support
14: horizontal frame 20: lead tab cutter
22: ascending / descending block 30: ascending / descending cylinder
40: vacuum chuck 50: lead tab feeding device
60: support base transfer device 70: cleaning device
71: Piston rod 72: Pneumatic cylinder
73: guide rail 74: fixed block
75: LM Guide 76: Movable block
76a: semicircular grooves 77a, 77b: cleaning member fixing piece
78a, 78b: fastening screw 79: cleaning member
S: Electrode sheet

Claims (7)

A horizontal frame 14 for supporting the lead tab support 12, and an electrode sheet S continuously supplied on the lead tab support 12, A rising / falling block 22 to which the lead tab cutter 20 is attached, and an up / down cylinder 30 for moving up / down the up / down block 22 The cutting edge surface of the lead tab cutter 20, which cuts the lead taps while descending with the ascending / descending block 22 by the operation of the ascending and descending cylinder 30, A cleaning device (70)
The cleaning device (70)
A pneumatic cylinder 72;
A fixed block 74 integrally fixed to an outer surface of one end of the casing of the pneumatic cylinder 72 and extending in a rod shape by a predetermined length; And
A movable block 76 movable longitudinally on the fixed block 74 and provided with a cleaning unit at its free end for contacting and cleaning the cutting edge surface of the lead tab cutter 20,
The cleaning unit is configured to remove the electrode sheet S supplied onto the lead tab supporter 12 from the cutting edge surface of the lead tab cutter 20 immediately after cutting the lead tab cutter 20 to a predetermined length And the cleaning device is contacted and cleaned. The movable block (76) according to claim 1, wherein a guide rail (73) extends longitudinally on one side of the fixed block (74) facing the movable block (76) The LM guide 75 is reciprocated in the longitudinal direction along the guide rail 73 and the fixed end of the movable block 76 is pushed by the pneumatic cylinder 72 ) Of the piston rod (71) of the secondary battery. 3. The apparatus according to claim 2, wherein the fixing block (74) has a rod-shaped horizontal guide (80) whose one end is fixed to the horizontal frame (14) and extends horizontally outwardly from the horizontal frame (14) Is arranged to be fixedly supported by a support block (82) fixed on the base (14). The movable block (76) according to claim 2, wherein a semicircular groove (76a) is formed in the middle of the movable block (76) near the free end of the movable block (76) Wherein the cleaning unit detects the position of the cleaning unit, and the lead tab cutter is cut only when light passes through the cleaning unit. 5. The cleaning apparatus according to any one of claims 1 to 4,
Cleaning member fixing pieces (77a, 77b) integrally fixed and detachably attached to the free end of the movable block (76); And
A cleaning member 79 detachably attached to one surface of the cleaning member fixing pieces 77a and 77b;
And a cleaning device for cleaning the secondary battery lead taps. The cleaning apparatus according to claim 4, wherein the cleaning member fixing members (77a, 77b) are spaced apart from the lead tab cutter (20) by a predetermined distance, One end of the second fixing piece 77b is protruded from the one end of the movable block 76 by a second fixing screw 78b. And a first fixing piece 77a of the cleaning member fixing pieces 77a and 77b is detachably attached to one side of the upper side of the second fixing piece 77b by a first fixing screw 78a And the cleaning member 79 is detachably attached to one surface of the first fixing piece 77a and the second fixing piece 77b facing the lead tab cutter 20, A cleaning device for the secondary battery lead tab cutting device. The apparatus according to claim 6, wherein the cleaning member (79) is made of a dust-removing nonwoven fabric using static electricity.

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