KR20230094433A - Laser notching apparatus capable of collecting scrap - Google Patents

Abstract

The present invention relates to a laser notching apparatus capable of collecting scrap. The laser notching apparatus comprises: a first winding roll unit around which an unprocessed base material is wound; a second winding roll unit which winds and collects the base material notched after being unwound from the first winding roll unit, and transfers the same; laser generating equipment which emits a laser at the base material in the notching section between the first winding roll unit and the second winding roll unit; and a scrap collecting unit which is positioned at an exit side of the notching section to suction the scrap generated after the notching of the base material. Therefore, the laser notching apparatus can immediately suction and process the scrap cut off from the base material after laser notching, thereby preventing process defects caused by the scrap, greatly improving production efficiency, improving the working environment during notching, and improving safety during work.

Description

Laser notching device capable of collecting scrap {LASER NOTCHING APPARATUS CAPABLE OF COLLECTING SCRAP}

The present invention relates to a laser notching device capable of recovering scrap, and more particularly, to a laser notching device capable of recovering scrap by sucking in scraps cut from a substrate after laser notching and immediately recovering and processing the scrap.

In recent years, the demand for portable electronic devices such as laptop computers, tablet PCs, and smart phones and the need for and demand for electric vehicles are increasing in order to reduce carbon emissions caused by fossil fuels.

Accordingly, the demand for secondary batteries is greatly increasing, and there is a trend of developing secondary batteries having high capacity and high performance.

In general, a secondary battery has a structure including an electrode body constituting a positive electrode and a negative electrode, a separator positioned between the positive electrode and the negative electrode, and an electrolyte or solid electrolyte injected into the battery case.

The electrode body of the secondary battery is manufactured in various shapes and sizes according to the shape or size of the battery case.

Accordingly, the electrode body cuts the electrode sheet into a predetermined shape and size through a notching process.

The electrode sheet is cut into a predetermined shape and size by a laser notching device, and at this time, tabs, which are connecting parts of the electrodes, are cut together.

In a conventional laser notching device, an electrode sheet is unwound from a first winding roll on which an electrode sheet is wound, and wound and transported from another second winding roll, while laser equipment cuts the electrode sheet into a predetermined shape and size.

Conventional laser notching devices have a problem in that cutting pieces, that is, scraps generated by cutting electrode sheets with laser equipment are not recovered, resulting in defects in the process.

In addition, the conventional laser notching device has the inconvenience of having to perform a separate cleaning operation for handling scrap generated during the notching operation, and there is a risk of causing injury to workers due to splashing of the scrap during operation.

In addition, in the conventional laser notching device, the electrode sheet wound on the first winding roll is recovered and transported to the second winding roll, and the electrode sheet is shaken in the vertical direction from the conveying direction. There was a problem in that smooth and precise processing could not be achieved because the focal range of the irradiated laser was out of range.

Korean Patent Publication No. 2021-0069610 "Laser notching device with improved processing speed" (published on June 11, 2021)

An object of the present invention is to provide a laser notching device capable of recovering scraps that can prevent defects in the process caused by scraps by sucking in scraps cut off from a substrate after laser notching and immediately recovering and processing them.

Another object of the present invention is to support the upper and lower parts of the substrate with the upper guide part and the lower guide part in the notching operation section of the substrate, thereby minimizing shaking in the upper and lower directions during the transfer of the substrate, and a laser capable of recovering scrap. It is to provide a notching device.

Another object of the present invention is to prevent shaking in the up and down directions that occurs during transport of the substrate by inclining upward when the substrate enters the notching operation section of the substrate and tilting downward when the substrate is discharged after working in the notching section. It is to provide a laser notching device capable of minimizing the recovery of scrap.

In order to achieve the above object, one embodiment of a laser notching device capable of recovering scrap according to the present invention is a first winding roll unit on which an unprocessed substrate is wound, and a notched substrate after unwinding from the first winding roll unit. A second take-up roll unit that collects and transports the substrate, a laser generating device that irradiates a laser to the substrate in the notching operation section between the first take-up roll unit and the second take-up roll unit, and is located at the exit side of the notching operation section, It is characterized in that it includes a scrap recovery unit for sucking in scrap generated after the notching operation of the substrate.

In the present invention, the scrap recovery unit may include an upper scrap suction unit located on the upper side of the substrate and a lower scrap suction unit located on the lower side of the substrate.

One embodiment of a laser notching device capable of recovering scrap according to the present invention is a first working support roll unit and a second working support roll unit in which a notching operation section is located therebetween, and is located spaced apart from one side of the first working support roll unit A first upper support roll supporting the upper surface of the substrate entering the notching operation section and a second upper support roll positioned apart from the other side of the second support roll unit for supporting the upper surface of the substrate exiting the notching operation section It further includes a portion, and the first upper support roll portion and the second upper support roll portion may be positioned lower than the first work support roll portion and the second work support roll portion.

In the present invention, the upper scrap suction unit is positioned inclined between the laser generating equipment and the support roll unit for the second operation at an angle for the first recovery based on the horizontal surface of the substrate, and the lower scrap intake unit supports the second operation It may be inclined at a second recovery angle between the roll unit and the second upper backup roll unit.

In the present invention, the first recovery angle may be equal to or greater than the second recovery angle.

In the present invention, a distance between the substrate and the upper scrap suction part in the vertical direction may be shorter than a distance between the substrate and the lower scrap suction part.

In the present invention, the center of the suction port in the upper scrap suction part is located higher than the first upper support roll part and the second upper support roll part, and the center of the suction hole in the lower scrap suction part is located between the first upper support roll part and the second upper support roll part. 2 can be located lower than the upper support roll unit.

In the present invention, the height of the first upper backup roll unit is higher than the height of the second upper backup roll unit, so that the entry angle of the substrate entering the notching operation zone is discharged after the notching operation in the notching operation zone. It may be formed lower than the angle.

In the present invention, the entry angle may have an angle of 50 to 80% compared to the exit angle.

In the present invention, a distance between the second upper support roll unit and the second working support roll unit may be shorter than a distance between the first upper support roll unit and the first working support roll unit.

In the present invention, the distance between the first upper support roll unit and the first working support roll unit may have a distance of 60 to 95% of the distance between the second upper support roll unit and the second working support roll unit.

One embodiment of the laser notching device capable of recovering scrap according to the present invention may further include an upper guide part and a lower guide part respectively located at the upper and lower parts of the substrate in the notching operation section to control shaking of the substrate. there is.

In the present invention, the length of the upper guide part and the lower guide part may have a length of 30 to 90% of the distance between the support roll part for the first work and the support roll part for the second work.

One embodiment of the laser notching device capable of recovering scrap according to the present invention may further include a guide interval adjusting unit for adjusting the interval between the upper guide unit and the lower guide unit.

In the present invention, the guide spacing adjusting unit may be a spacing adjusting bolt member whose lower end side is rotatably coupled to the lower guide unit and screwed through the upper guide unit to move the upper guide unit up and down by rotation.

In the present invention, a laser passage hole through which a laser for notching is passed is formed in the upper guide part and the lower guide part, the substrate is an electrode sheet, and the laser generating equipment irradiates a laser beam to the electrode sheet being transferred. While cutting the edge in the width direction to a predetermined width, the electrode sheet is cut so that the electrode tab protrudes from the cut edge, and the electrode tab is continuously processed at a predetermined interval, and the length of the laser passage hole is the electrode It may be formed smaller than the spacing of the tabs.

In the present invention, the laser passage hole has a first side coincident with the width direction edge of the unprocessed electrode sheet in the width direction, a second side coincident with the cut line of the electrode sheet and parallel to the first side, and the first side A square hole including a third side connecting one side of the second side and a fourth side connecting the other side of the first side and the second side, and the laser generating device emits a laser beam between the first side and the third side. Diagonally moves from the first vertex where the sides meet to the fourth vertex where the second side and the fourth side meet, and then from the fourth vertex along the second side to the third vertex where the second side and the third side meet. A strip of the electrode sheet excluding the electrode tab may be cut from the electrode sheet by moving in a straight line and moving diagonally from the third vertex to a fourth vertex where the first side and the fourth side meet.

In the present invention, on the lower surface of the upper guide portion, a plurality of first rotation members for transporting a plurality of substrates that roll in contact with the upper surface of the substrate are protruded, and on the upper surface of the lower guide portion, a plurality of first rotating members that roll in contact with the lower surface of the substrate The second rotation member for transporting the substrate may be positioned so as to protrude.

The present invention prevents defects in the process caused by scrap by directly inhaling and processing the scrap cut off from the substrate after laser notching, greatly improves production efficiency, improves the work environment during notching, and improves safety during work. has an enhancing effect.

The present invention supports the upper and lower parts of the substrate with the upper and lower guide parts in the notching operation section of the substrate, thereby minimizing shaking in the up and down directions during the transport of the substrate, thereby greatly improving the precision and work efficiency during laser notching. has the effect of

In addition, the present invention enters the substrate at an upward slope into the notching operation section and discharges the substrate at a downward slope after work in the notching section, thereby minimizing shaking in the up and down directions during transport of the substrate, thereby increasing precision and work efficiency during laser notching operation. has the effect of greatly improving

1 is a schematic view showing an embodiment of a laser notching device capable of recovering scrap according to the present invention.
Figure 2 is an enlarged view of a notching operation section in one embodiment of a laser notching device capable of recovering scrap according to the present invention.
Figure 3 is a plan view showing an embodiment of a laser notching device capable of recovering scrap according to the present invention.
Figure 4 is a schematic diagram illustrating a moving path of a laser beam processing in a laser pass-through hole in an embodiment of a laser notching device capable of recovering scrap according to the present invention.
5 is an enlarged view of a notching operation section in another embodiment of a laser notching device capable of recovering scrap according to the present invention.
Figure 6 is a front view showing an embodiment of an upper guide part and a lower guide part in one embodiment of a laser notching device according to the present invention.
7 is a front view showing another embodiment of an upper guide part and a lower guide part in one embodiment of a laser notching device capable of recovering scrap according to the present invention.
Figure 8 is a front view showing another embodiment of the guide interval adjustment unit in one embodiment of a laser notching device capable of recovering scrap according to the present invention.

Hereinafter, the present invention will be described in more detail.

A preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings. Prior to the detailed description of the present invention, the terms or words used in the present specification and claims described below should not be construed as being limited to common or dictionary meanings. Therefore, since the embodiments described in this specification and the configurations shown in the drawings are only the most preferred embodiments of the present invention and do not represent all of the technical spirit of the present invention, various equivalents that can replace them at the time of the present application It should be understood that there may be waters and variations.

1 is a schematic diagram showing an embodiment of a laser notching device capable of recovering scrap according to the present invention, and FIG. 2 is an enlarged notching operation section in an embodiment of a laser notching device capable of recovering scrap according to the present invention. 3 is a plan view showing an embodiment of a laser notching device capable of recovering scrap according to the present invention.

An embodiment of a laser notching device capable of recovering scrap according to the present invention will be described in detail below with reference to FIGS. 1 to 3 .

The laser notching device capable of recovering scrap according to the present invention is recovered by winding the notched substrate 1 after unwinding from the first winding roll unit 100 on which the unprocessed substrate 1 is wound and the first winding roll unit 100. It includes a second winding roll unit 200 to.

The substrate 1 is an example of an electrode sheet 1a used as an electrode body in a secondary battery, and an embodiment of a laser notching device capable of recovering scrap according to the present invention is the tab portion of the electrode in the electrode sheet 1a. That is, processing of the electrode tab 1b, which is a connection portion, will be described below as an example.

In addition to the electrode sheet 1a, the substrate 1 may be variously modified and implemented as a known substrate that is cut through a laser notching operation while being transferred between rolls.

The second winding roll unit 200 winds and recovers the electrode sheet 1a on which the electrode tab 1b has been processed through laser notching, and the base material 1 unwound from the first winding roll unit 100, that is, the electrode sheet 1a. ) is transferred.

The second take-up roll unit 200 receives the rotational force of the rotation motor and rotates in the winding direction of the electrode sheet 1a to wind and recover the laser-notched electrode sheet 1a unwinded from the first take-up roll unit 100.

A laser generating device 300 is positioned between the first winding roll unit 100 and the second winding roll unit 200, and the laser generating equipment 300 includes the first winding roll unit 100 and the second winding roll unit 200. It is located in the notching work section where the laser notching work is performed between.

For example, the laser generating equipment 300 is located on the upper side of the electrode sheet 1a being transported in the notching operation section and irradiates a laser beam toward the lower side to cut the electrode sheet 1a.

The laser generating equipment 300 is a known laser equipment that moves a laser generating unit to perform cutting in a pre-designed form through a laser beam, and can be variously modified and implemented, so a detailed description thereof will be omitted.

At the exit side of the notching operation section, a scrap recovery unit 1300 for sucking in scrap generated after the notching operation of the base material 1 is located.

The scrap recovery unit 1300 may include a suction pipe member located at the exit side of the notching operation section to suck in scrap, and an aspirator connected to the suction pipe member to suck air through the suction pipe member and suck scrap together.

The aspirator may be variously modified and implemented with a known suction structure including a vacuum pump, so a detailed description thereof will be omitted.

Although not shown, the scrap collection unit 1300 further includes a scrap storage unit (not shown) for storing scrap sucked through the suction pipe member.

The scrap storage unit (not shown) separately collects and stores scraps generated after the laser notching operation, and when a certain amount or more is collected, the scraps collected in the scrap storage unit may be transferred to other processing facilities for treatment.

Also, in the notching operation section, the upper guide part 400 and the lower guide part 500 are positioned on the upper and lower sides of the electrode sheet 1a, respectively.

The upper guide part 400 and the lower guide part 500 cover the upper and lower surfaces of the electrode sheet 1a in the notching operation section to prevent the electrode sheet 1a from shaking up and down.

The upper guide part 400 and the lower guide part 500 are positioned across the width direction of the electrode sheet 1a and guide the linear movement of the electrode sheet 1a therebetween, and the top of the electrode sheet 1a, Prevents shaking in the downward direction. Here, the upward and downward directions mean directions from the substrate 1 toward the laser generating equipment 300 and opposite directions, respectively.

The electrode sheet 1a, that is, the substrate 1, is transferred from the first take-up roll unit 100 to the second take-up roll unit 200, and a laser notching operation is performed during the transfer. may occur.

When the electrode sheet 1a, that is, the substrate 1, is shaken in the up and down directions in the notching operation section, the focus of the laser beam irradiated from the laser generating equipment 300 is focused on the cutting position, that is, the electrode sheet 1a. Since it is not positioned accurately, the notching operation cannot be performed smoothly, and the precision of the notching operation is lowered.

The upper guide part 400 and the lower guide part 500 support the upper and lower surfaces of the electrode sheet 1a in the notching operation section to prevent the electrode sheet 1a from being shaken in the upper and lower directions.

In addition, the upper guide part 400 and the lower guide part 500 cover the upper and lower surfaces of the electrode sheet 1a in the notching operation section to further prevent left and right shaking of the electrode sheet 1a. Here, the left and right directions mean the width direction of the substrate 1 crossing the transport direction of the substrate 1. For example, the left and right directions refer to a direction opposite to the direction in which the electrode tab 1b is formed at the center of the substrate 1 based on the width direction of the substrate 1 perpendicular to the transport direction of the substrate 1. each means

A laser passage hole 410 through which a laser beam for notching is passed is formed in the upper guide part 400 and the lower guide part 500 .

The laser pass-through hole 410 is cut through the notching operation and remains on the substrate 1, that is, formed in a shape corresponding to the notching shape, so that the notching operation can be cut into an accurate shape through the laser beam during the notching operation through the laser beam. make it possible

The laser passage hole 410 is formed in a shape corresponding to the electrode tab 1b, so that even if a laser beam is irradiated out of the cutting shape due to a malfunction of the laser generating equipment 300, it is blocked by the upper guide part 400 and the base material 1 is blocked. It is possible to prevent an accident of wrong cutting and minimize damage due to malfunction of the laser generating equipment 300 by performing the notching operation only within the hole.

In addition, a laser damper unit 510 for absorbing a laser beam passing through the substrate 1 and the laser passage hole 410 is positioned on the lower side of the lower guide unit 500 .

The laser damper unit 510 absorbs the laser beam passing through the laser pass-through hole 410 to prevent the laser beam from damaging other structures or being reflected to cause injury to workers.

The laser damper unit 510 is a damper made of copper as an example, and other than that, a known material capable of absorbing a laser beam may be variously modified and implemented, so a detailed description thereof will be omitted.

In addition, the laser notching device capable of recovering scrap according to the present invention further includes a guide interval adjusting unit 600 for adjusting the interval between the upper guide unit 400 and the lower guide unit 500 .

The lower guide part 600 is rotatably coupled to the lower guide part 500 and is screwed through the upper guide part 400 to move the upper guide part 400 up and down by rotation. It is an example that the spacing adjustment bolt member 610 to do.

As an example, the gap adjusting bolt member 610 is positioned on both sides of the upper guide part 400 and the lower guide part 500, that is, on both sides of the electrode sheet 1a, which is the substrate 1, as an example, and is rotated The distance between the upper guide part 400 and the lower guide part 500 may be adjusted by moving the upper guide part 400 up and down.

On the other hand, the laser notching device capable of recovering scrap according to the present invention further includes a first working support roll unit 700 and a second working supporting roll unit 800 having a notching operation section located therebetween.

An upper guide part 400 and a lower guide part 500 are positioned between the first work support roll unit 700 and the second work support roll unit 800 .

The first working support roll unit 700 and the second working support roll unit 800 are positioned at the same height so that the electrode sheet 1a is horizontal in the notching operation section, and the upper guide unit 400 and the lower guide unit 500 ) guides the electrode sheet 1a so that it can pass horizontally between them.

A first upper support roll unit 900 and a second support roll unit for supporting the upper surface of the electrode sheet 1a, that is, the base material 1, located on one side of the first working support roll unit 700 and entering the notching operation section. A second upper backup roll part 1000 that is spaced apart from the other side of 800 and supports the upper surface of the electrode sheet 1a, that is, the substrate 1, exiting the notching operation section is further included.

One side of the first work support roll unit 700 is the direction toward the first take-up roll unit 100, that is, the entrance side of the notching work section, and the other side of the second work support roll unit 800 is the second take-up roll unit 200 It should be noted that it is the direction to which it is headed, that is, the exit side of the notching work section.

The first upper support roll unit 900 and the second upper support roll unit 1000 are positioned lower than the heights of the first support roll unit 700 and the second operation support roll unit 800, so that the electrode sheet 1a, that is, the substrate ( 1) is inclined to the upper side and enters the notching operation section, and in the notching operation section, the notching operation is performed while moving horizontally through the first operation support roll unit 700 and the second operation support roll unit 800, and after the notching operation, the notching operation is inclined to the lower side discharged from the work zone.

Accordingly, the tension is effectively controlled to prevent shaking of the electrode sheet 1a during the laser notching operation, that is, during the notching operation section, and enables precision processing during the laser notching operation of the electrode sheet 1a.

In more detail, the height of the first upper backup roll unit 900 is higher than the height of the second upper backup roll unit 1000, so that the entry angle α of the base material 1 entering the notching operation zone is notched in the notching operation zone. It is formed lower than the discharge angle (β) of the substrate 1 to be discharged after.

That is, the entry angle α of the substrate 1 entering the notching operation section is formed lower than the discharge angle β of the substrate 1 discharged from the notching operation section, but is 50 to 80% compared to the discharge angle β can have an angle of

An entry angle α of the substrate 1 entering the notching operation section may have an angle of 55 to 75% compared to an exit angle β of the substrate 1 exiting the notching operation section.

An entry angle α of the substrate 1 entering the notching operation section may have an angle of 60 to 70% compared to an exit angle β of the substrate 1 exiting the notching operation section.

The entry angle (α) of the substrate 1 entering the notching operation section is 50 to 80% of the discharge angle (β), preferably 60 to 70% of the angle, so that the notching work section is transported horizontally The tension of the substrate 1 is effectively controlled to minimize shaking in the up and down directions, and the focus of the laser beam can be constantly positioned on the surface of the substrate 1.

In addition, the distance (d ₁ ) between the second upper support roll unit 1000 and the second working support roll unit 800 is greater than the distance (d ₂ ) between the first upper support roll unit 900 and the first working support roll unit 700 It is formed short so that the tension of the electrode sheet 1a can be more effectively controlled.

In more detail, the distance (d ₁ ) between the second upper support roll unit 1000 and the second working support roll unit 800 is the distance between the first upper support roll unit 900 and the first working support roll unit 700 (d ₂ ) It can have a distance of 60 to 95% of the contrast.

The distance (d ₁ ) between the second upper support roll unit 1000 and the second working support roll unit 800 is 70 to the distance (d ₂ ) between the first upper support roll unit 900 and the first working support roll unit 700 You can have 90% of the distance.

The distance (d ₁ ) between the second upper support roll unit 1000 and the second working support roll unit 800 is 80 to the distance (d ₂ ) between the first upper support roll unit 900 and the first working support roll unit 700 You can have 90% of the distance.

The distance (d ₁ ) between the second upper support roll unit 1000 and the second working support roll unit 800 is 60 to the distance (d ₂ ) between the first upper support roll unit 900 and the first working support roll unit 700 95% distance, preferably 80 to 90% of the entry angle (α) of the substrate 1 entering the notching operation section and the discharge angle (β) of the substrate 1 exiting the notching operation section can be controlled at an appropriate angle, and the tension of the substrate 1 transported horizontally in the notching operation section is effectively controlled to minimize shaking in the up and down directions, and the focus of the laser beam is constant on the surface of the substrate 1 so that it can be positioned

In addition, the length L 1 of the electrode sheet 1a covered by the upper guide part 400 and the lower guide part 500, that is, the length L ₁ of the upper guide part 400 and the lower guide part ₅₀₀ ) is formed shorter than the distance (d ₃ ) between the first working support roll unit 700 and the second working support roll unit 800, and the distance between the first working support roll unit 700 and the second working support roll unit 800 ( d ₃ ) may have a length of 30 to 90%.

The length (L 1 ) of the electrode sheet (1a) covered by the upper guide part 400 and the lower guide part 500, that is, the length (L ₁ ) of the upper guide part 400 and the lower guide part ₅₀₀ is The distance between the first working support roll unit 700 and the second working support roll unit 800 (d ₃ ) may have a length of 40 to 65% compared.

The length (L 1 ) of the electrode sheet (1a) covered by the upper guide part 400 and the lower guide part 500, that is, the length (L ₁ ) of the upper guide part 400 and the lower guide part ₅₀₀ is It may have a length of 50 to 60% compared to the distance (d ₃ ) between the first working support roll unit 700 and the second working support roll unit 800.

The upper guide part 400 and the lower guide part 500 have a length shorter than the distance of the notching work section located between the first work support roll part 700 and the second work support roll part 800, and the first work support It is positioned so as not to interfere with the roll unit 700 and the second working support roll unit 800 to support the upper and lower surfaces of the electrode sheet 1a to minimize shaking of the electrode sheet 1a in the up and down directions.

When the upper guide portion 400 and the lower guide portion 500 have a length less than 30% of the distance (d ₃ ) between the first working support roll portion 700 and the second working support roll portion 800, electrode sheet 1a ) is too small to properly control shaking in the upper and lower directions of the electrode sheet 1a.

In addition, the upper guide portion 400 and the lower guide portion 500 have a length exceeding 90% compared to the distance (d ₃ ) between the first work support roll portion 700 and the second work support roll portion 800. The frictional force of the electrode sheet 1a between the first working support roll unit 700 and the upper guide unit 400 and the second working support The frictional force is increased between the rom part and the lower guide part 500, and in order to solve this, the gap between the first working support roll part 700 and the upper guide part 400 is widened, and the second working supporting roll part 800 and the lower guide Since the interval between the parts 500 has to be widened, the size of the entire facility is increased, so there is a problem in that a lot of space is required.

Accordingly, the upper guide part 400 and the lower guide part 500 are located in the center between the first work support roll part 700 and the second work support roll part 800, and the upper guide part 400 and the lower guide part 500 ) may have a length of 30 to 90%, preferably 50 to 60% of the distance (d ₃ ) between the first working support roll unit 700 and the second working support roll unit 800.

The length (L ₁ ) of the upper guide part 400 and the lower guide part 500 is 30 to 90% of the distance (d ₃ ) between the first work support roll part 700 and the second work support roll part 800 , preferably by having a length of 50 to 60% to minimize the frictional force generated when the electrode sheet 1a passes through the upper guide part 400 and the lower guide part 500, and in the notching operation section, the electrode sheet ( It is possible to stably control shaking in the up and down directions of 1a).

Meanwhile, the scrap recovery unit 1300 may include an upper scrap suction unit 1310 located on the upper side of the substrate 1 and a lower scrap suction unit 1320 located on the lower side of the substrate 1.

The scrap recovery unit 1300 primarily sucks in and processes scrap through the upper scrap suction unit 1310 located on the upper side of the substrate 1, and scraps that have not been suctioned from the upper scrap intake unit 1310 are disposed on the substrate ( 1) by suctioning and processing through the lower scrap suction part 1320 located on the lower side, preventing an accident in which scrap is not sucked.

The upper scrap suction part 1310 is located between the laser generating equipment 300 and the second working support roll part 800, and the lower scrap suction part 1320 is the second working supporting roll part 800 and the second upper support It is located between the roll part 1000.

In addition, the upper scrap suction unit 1310 is located inclined at an angle θ ₁ for the first recovery based on the horizontal surface of the substrate 1 between the laser generating equipment 300 and the support roll unit 800 for the second operation And, the lower scrap intake unit 1320 is positioned inclined at a second recovery angle θ ₂ between the second support roll unit 800 and the second upper support roll unit 1000.

The base material 1 is positioned horizontally by the support roll unit 700 for the first operation and the support roll unit 800 for the second operation having the same height in the notching operation section, and the first recovery angle θ ₁ and the second recovery It is noted that the angle θ ₂ is an inclined angle with respect to the base material 1 positioned horizontally by the support roll unit 700 for the first operation and the support roll unit 800 for the second operation in the notching operation section.

The first recovery angle θ ₁ is equal to or greater than the second recovery angle θ ₂ , so that the substrate 1 is notched by the laser beam of the laser generating equipment 300 immediately after the upper scrap suction part 1310 ) to increase the possibility of being recovered, and to be recovered to the lower scrap suction unit 1320 when not recovered to the upper scrap suction unit 1310.

In addition, the distance between the base material 1, that is, the electrode sheet 1a, and the upper scrap suction part 1310 based on the vertical direction is between the base material 1, that is, the electrode sheet 1a, and the lower scrap suction part 1320. It is shorter than the interval of so that scrap can be efficiently recovered by inertia in the traveling direction of the substrate 1.

In addition, the center of the intake in the upper scrap suction unit 1310 is located higher than the first upper support roll unit 900 and the second upper support roll unit 1000, so that the scraps cut during horizontal movement of the base material 1 are sucked into the upper scraps. It allows to be smoothly sucked through the unit 1310.

In the lower scrap suction unit 1320, the center of the suction port is located lower than the first upper support roll unit 900 and the second upper support roll unit 1000, and the scrap cut from the base material 1 discharged at a downward slope after the notching operation is lowered. It allows the scrap to be smoothly sucked through the suction part 1320.

Meanwhile, in an embodiment of the laser notching device capable of recovering scrap according to the present invention, the first transfer guide roll unit guides the electrode sheet 1a unwound from the first take-up roll unit 100 to the first upper support roll unit 900. 1100, and a second transfer guide roll unit 1200 for guiding the electrode sheet 1a discharged through the second upper support roll unit 1000 to the second take-up roll unit 200.

Accordingly, the electrode sheet 1a unwound from the first take-up roll unit 100 is guided to the first upper backup roll unit 900 through the first transfer guide roll unit 1100 and passes through the first upper backup roll unit 900 to perform notching work. The electrode sheet 1a entered into the section and discharged through the second upper support roll unit 1000 after the laser notching operation in the notching operation section is guided through the second transport guide roll unit 1200, and the second take-up roll unit 200 can be smoothly wound and recovered.

The first transfer guide roll unit 1100 and the second transfer guide roll unit 1200 may be disposed in plurality along the transfer path of the substrate 1, that is, the electrode sheet 1a, which transports the substrate 1 in a roll-to-roll manner. It should be noted that various modifications can be made using a known transfer structure.

3 is a plan view showing an example of processing the electrode tab 1b of the electrode sheet 1a with a laser notching device capable of collecting scrap according to the present invention in more detail.

One embodiment of the laser notching device capable of recovering scrap according to the present invention transfers the electrode sheet 1a while cutting one edge of the electrode sheet 1a, that is, the edge in the width direction to a predetermined width, and The electrode sheet 1a is cut so that the rectangular electrode tab 1b protrudes, and the electrode tab 1b is cut at a predetermined interval in the longitudinal direction of the electrode sheet 1a at the edge in the width direction of the electrode sheet 1a. processed continuously.

The laser passage hole 410 is a rectangle having the same width as the width cut at the edge of the electrode sheet 1a in the width direction, that is, the same width as the electrode tab 1b and the same length as the electrode tab 1b. A hole is taken as an example.

In the upper guide part 400 and the lower guide part 500, a laser passage hole 410 having a square shape having the same size as the rectangular electrode tab 1b corresponding to the shape of the electrode tab 1b is formed, The length (L ₂ ) of the laser pass-through hole 410 is formed smaller than the distance (d ₄ ) of the electrode tabs 1b, leaving the electrode tabs 1b in the laser pass-through hole 410 to the outermost part of the electrode sheet 1a. The geography can be cut at a certain width, that is, the portion other than the electrode tab 1b can be cut.

The laser generating equipment 300 irradiates a laser beam into the laser pass-through hole 410 and cuts the edge to a certain width while cutting the portion except for the electrode tab 1b to leave a rectangular electrode tab 1b portion. The laser notching operation forming (1b) is continuously performed at predetermined intervals so that the electrode tabs 1b protrude from the edge of the electrode sheet 1a being transported at regular intervals.

4 is a schematic diagram illustrating a movement path of a laser beam processing the inside of a laser through hole 410 in an embodiment of a laser notching device capable of recovering scrap according to the present invention. Referring to FIG. 4, the laser through hole ( 410), the first side 411 coincides with the widthwise edge of the unprocessed electrode sheet 1a in the width direction, and the second side 412 coincides with the cut line of the electrode sheet 1a and is parallel to the first side 411 ), a third side 413 connecting one side of the first side 411 and the second side 412, and a fourth side 414 connecting the other side of the first side 411 and the second side 412 ) It is taken as an example that it is a square hole including.

In addition, one side of the first side 411 and the second side 412 is in the direction toward the first winding roll unit 100, that is, the entrance side of the notching operation section, and the first side 411 and the second side 412 Note that the other side of ) is the direction toward the second winding roll unit 200, that is, the exit side of the notching operation section.

Within the square-shaped laser passage hole 410, the laser beam is emitted from the first vertex where the first side 411 and the third side 413 meet to the fourth side where the second side 412 and the fourth side 414 meet. After moving diagonally to the vertex, move linearly from the fourth vertex along the second side 412 to the third vertex where the second side 412 and the third side 413 meet, and again from the third vertex to the first side. By moving diagonally to a fourth vertex where 411 and the fourth side 414 meet, a portion of the electrode sheet 1a except for the electrode tab 1b is cut to generate strip-shaped scrap.

One embodiment of the laser notching device capable of recovering scrap according to the present invention processes the electrode tab 1b on the electrode sheet 1a during transfer from the first winding roll unit 100 to the second winding roll unit 200, so that the laser The light source or internal optical member is moved in the generating device 300 to diagonally move the laser beam from the first vertex to the fourth vertex, linearly move it from the fourth vertex to the third vertex, and then diagonally from the third vertex to the second vertex. By moving, a band having a certain width is cut at the edge of the electrode sheet 1a being linearly transported, leaving only the rectangular electrode tab 1b.

That is, in one embodiment of the laser notching device capable of recovering scrap according to the present invention, the laser beam is moved diagonally from the first vertex to the fourth vertex within the laser passage hole 410, and from the fourth vertex to the third vertex. After the linear movement, the diagonal movement from the third vertex to the second vertex cuts the strips having a certain width at regular intervals, leaving the electrode tabs 1b between the cut strips.

Meanwhile, FIG. 5 is an enlarged view of a notching operation section in another embodiment of a laser notching device capable of recovering scrap according to the present invention, and referring to FIG. 5, another embodiment of the scrap recovery unit 1300 will be described in more detail in

The scrap recovery unit 1300 further includes a first width direction transfer unit 1311 that transfers the upper scrap suction unit 1310 to the left and right, thereby reducing the amount of scrap generated in the substrate 1 by the notching operation by the laser generating equipment. Depending on the location, the location of the upper scrap suction unit 1310 may be changed.

The first widthwise transfer unit 1311 is an example of a linear actuator of the ball screw type, and in addition to a rack gear and a pinion gear meshed with the rack gear to be rotated by the motor, a rack converting the rotational force of the motor into linear movement, and Pinion structures, hydraulic cylinders, etc. can be variously modified and implemented using known linear movement devices, and more detailed descriptions are omitted.

The scrap recovery unit 1300 may further include a first suction angle adjusting unit 1312 capable of adjusting the suction angle of the upper scrap suction unit 1310 by rotating the upper scrap suction unit 1310 .

The first suction angle adjustment unit is mounted on the upper scrap suction unit 1310, which is rotatably hinged to the first intake pipe support bracket member 1312a and the first intake pipe support bracket member 1312a, so that the upper scrap suction part 1310 ) and a first rotation motor 1312b that rotates.

The scrap recovery unit 1300 may further include a first suction height adjusting unit 1313 capable of adjusting the height of the upper scrap suction unit 1310 by moving the upper scrap suction unit 1310 up and down.

The first suction height adjusting unit 1313 is an example of a hydraulic cylinder, and in addition, a linear actuator of a ball screw type, a rack gear and a pinion gear meshed with the rack gear and rotated by the motor are included, so that the rotational force of the motor is linearly moved. A bar that can be variously modified and implemented using a known elevating device such as a converting rack and pinion structure is omitted.

The first suction height adjusting unit 1313 moves the first suction angle adjusting unit 1312 up and down, and the first width direction transfer unit 1311 moves the first suction height adjusting unit 1313 to the substrate 1. As an example of moving in the width direction, the upper scrap suction unit 1310 may have a height adjusted by the operation of the first suction height adjusting unit 1313, and the first suction angle adjusting unit 1312 to adjust the suction angle In addition to this being possible, position control in the width direction of the substrate 1 is also possible by the first width direction transfer unit 1311 .

In addition, the scrap recovery unit 1300 further includes a second widthwise transfer unit 1321 that transfers the lower scrap suction unit 1320 to the left and right, so that the scrap generated in the substrate 1 by the notching operation by the laser generating equipment The position of the lower scrap suction unit 1320 may be changed according to the position of the scrap.

The second widthwise transfer unit 1321 is an example of a ball screw type linear actuator, and in addition to a rack gear and a pinion gear meshed with the rack gear to be rotated by the motor, a rack converting the rotational force of the motor into linear movement, and Pinion structures, hydraulic cylinders, etc. can be variously modified and implemented using known linear movement devices, and more detailed descriptions are omitted.

The scrap recovery unit 1300 may further include a second suction angle adjusting unit 1322 capable of adjusting the suction angle of the lower scrap suction unit 1320 by rotating the lower scrap suction unit 1320 .

The second suction angle adjusting unit is mounted on the second intake pipe support bracket member 1322a and the second intake pipe support bracket member 1322a to which the lower scrap suction part 1320 is rotatably hinged, and the lower scrap suction part 1320 ) and a second rotation motor 1322b that rotates.

The scrap recovery unit 1300 may further include a second suction height adjusting unit 1323 capable of adjusting the height of the lower scrap suction unit 1320 by moving the lower scrap suction unit 1320 up and down.

The second suction height adjusting unit 1323 is an example of a hydraulic cylinder, and in addition to a ball screw type linear actuator, a rack gear and a pinion gear meshed with the rack gear and rotated by the motor, the rotational force of the motor is linearly moved. A bar that can be variously modified and implemented using a known elevating device such as a converting rack and pinion structure is omitted.

The second suction height adjusting unit 1323 moves the second suction angle adjusting unit 1322 up and down, and the second width direction transfer unit 1321 moves the second suction height adjusting unit 1323 to the substrate 1. As an example of moving in the width direction, the lower scrap suction unit 1320 may have a height adjusted by the operation of the second suction height adjusting unit 1323, and the second suction angle adjusting unit 1322 to adjust the suction angle In addition to this being possible, position control in the width direction of the base material 1 is also possible by the second width direction transfer unit 1321 .

The scrap recovery unit 1300 efficiently sucks scrap generated after the laser notching operation of the substrate 1 by adjusting the position, height, and suction angle of the upper scrap intake unit 1310 and the lower scrap intake unit 1320, respectively. It can be removed and processed on the process immediately after laser notching.

Meanwhile, FIG. 5 is a front view showing an embodiment of an upper guide part 400 and a lower guide part 500 in one embodiment of a laser notching device according to the present invention. Referring to FIG. 5, the upper guide part 400 ) and the lower guide part 500 are set larger than the thickness of the substrate 1, that is, the electrode sheet 1a, and the upper guide part 400 is positioned to be spaced apart from the upper surface of the electrode sheet 1a, and the lower The guide part 500 is positioned to be spaced apart from the lower surface of the electrode sheet 1b.

An active material is applied to the upper or lower surface of the electrode substrate 1a, which may be, and at least one of the upper guide part 400 and the lower guide part 500 is in contact with the upper or lower surface of the electrode sheet 1a In this case, damage may occur to the active material layer applied to the electrode sheet 1a.

The electrode sheet 1a is formed by tension between the rollers located on both sides, that is, the first working support roll unit 700 and the second working support roll unit 800, between the upper guide unit 400 and the lower guide unit 500. The upper guide part 400 and the lower guide part 500 are transported in a spaced apart state.

In addition, the distance between the upper guide part 400 and the lower guide part 500 is adjusted through the guide gap adjusting part 600 according to the thickness of the electrode sheet 1a, so that it can correspond to the electrode sheet 1a of various thicknesses. .

The guide spacing adjusting unit 600 passes through the upper guide unit 400 and is screwed to the upper guide unit 400, and the lower end side is rotatably coupled to the lower guide unit 500, the spacing adjusting bolt member 610 includes

The distance between the upper guide part 400 and the lower guide part 500 may be adjusted by rotating the space adjusting bolt member 610 .

The guide spacing adjusting unit 600 is positioned to be spaced apart from the upper side of the upper guide unit 400 and is mounted on the upper support 620 and the upper support 620 rotatably supporting the spacing adjusting bolt member 610, A bolt rotation motor 630 for moving the upper guide part 400 up and down by rotating the gap adjusting bolt member 610 in both directions may be further included.

The guide spacing adjusting unit 600 moves the upper guide unit 400 up and down electrically by the operation of the bolt rotation motor 630 to operate the laser notching operation under working conditions, that is, the thickness of the substrate 1 or the substrate 1 It is possible to adjust the distance between the upper guide part 400 and the lower guide part 500 according to working conditions such as a feed speed of ).

7 is a front view showing another embodiment of an upper guide part 400 and a lower guide part 500 in another embodiment of a laser notching device capable of recovering scrap according to the present invention. Referring to FIG. 7, the upper guide On the lower surface of the unit 400, a plurality of first rotating members 400a for transporting a plurality of substrates that roll in contact with the upper surface of the electrode sheet 1a, that is, the substrate 1, are protruded, and the lower guide unit 500 On the upper surface, a plurality of second rotation members 500a for transferring the electrode sheet 1a, that is, the substrate 1, which rolls in contact with the lower surface of the substrate 1, are protruded.

The first rotation member 400a for transporting the substrate and the second rotation member 500a for transporting the substrate may be wheel-shaped or spherical ball bearings.

The first rotating member 400a for transporting the substrate and the second rotating member 500a for transporting the substrate are in contact with the upper and lower surfaces of the electrode sheet 1a, and the electrode sheet 1a being transported while being rolled is in contact with the upper guide part 400. Line contact between the and the lower guide portion 500 allows smooth horizontal movement.

The first rotation member 400a for transporting the substrate and the second rotation member 500a for transporting the substrate are in contact with the electrode sheet 1a between the upper guide portion 400 and the lower guide portion 500, and the electrode sheet 1a ) is prevented from shaking in the up and down directions, and the electrode sheet 1a can be smoothly linearly moved between the upper guide part 400 and the lower guide part 500 in a horizontal position.

The electrode sheet 1a is in contact with the first rotation member 400a for substrate transfer and the second rotation member 500a for substrate transfer between the upper guide portion 400 and the lower guide portion 500 without shaking. It can be moved horizontally to keep the laser beam focused on the surface.

At least one of each of the first and second rotation members 400a and 500a may be provided based on a direction perpendicular to the transport direction of the electrode sheet 1a, that is, the width direction of the substrate 1. In addition, each of the first and second rotating members 400a and 500a may be provided in plural numbers based on the above direction, and the plurality of first rotating members 400a may be disposed at equal intervals from each other on the electrode sheet 1a. can Also, the plurality of second rotating members 500a may be arranged at equal intervals from each other on the electrode sheet 1a.

In addition, although not shown in the drawing, the first rotating member 400a and the second rotating member 500a may be disposed on an area corresponding to a partial area of the electrode sheet 1a. For example, the first rotating member 400a and the second rotating member 500a may be disposed in an area that does not vertically overlap with the active material disposed on the electrode sheet 1a.

For example, the active material may be disposed only on the upper surface of the electrode sheet 1a facing the first rotating member 400a. In this case, the first rotating member 400a may be provided in a different number from the second rotating member 500a. In addition, the first rotating member 400a may be disposed at a position different from or partially corresponding to the second rotating member 500a in the vertical direction.

Accordingly, according to the embodiment, shaking of the substrate 1 can be prevented, and the laser notching operation can be performed while preventing damage to the active material formed on the substrate 1 .

Therefore, one embodiment of the laser notching device capable of recovering scrap according to the present invention can smoothly perform the laser notching operation of the electrode sheet 1a while moving the laser beam within the laser passage hole 410, Laser notching can be performed precisely in the set shape.

8 is a front view showing another embodiment of a guide gap adjusting unit 600 in an embodiment of a laser notching device capable of recovering scrap according to the present invention, and referring to FIG. 7, the upper guide unit 400 and The guide spacing adjusting unit 600 for adjusting the spacing of the lower guide unit 500 is erected and screwed through the lower guide unit 500 and the upper guide unit 400, but the spacing adjustment screw is screwed in opposite directions to each other. The member 640 is spaced apart from the lower side of the lower guide portion 500 or is spaced apart from the upper side of the upper guide portion 400 to rotatably support the spacing adjusting screw member 640 (650). ), and a screw rotation motor 660 mounted on the screw support 650 to rotate the spacing adjusting screw member 640 in both directions.

The guide spacing adjusting unit 600 electrically rotates the spacing adjusting screw member 640 in either direction by the operation of the screw rotation motor 660 to separate the upper guide portion 400 and the lower guide portion 500. It is possible to narrow the gap by moving them to face each other, and widen the gap by moving the upper guide part 400 and the lower guide part 500 in opposite directions.

The guide gap adjusting unit 600 may operate the screw rotation motor 660 to automatically adjust the gap between the upper guide part 400 and the lower guide part 500 according to working conditions during the laser notching operation.

For example, the screw support 650 is positioned to be spaced apart from the lower side of the lower guide part 500, and the laser damper part 510 is provided.

The screw supporter 650 is provided with a laser damper unit 510 so that the laser beam passing through the laser passage hole 410 can be absorbed and processed by the laser damper unit 510 .

By directly inhaling and processing the scraps cut off from the substrate after laser notching, it is possible to prevent process defects caused by scraps, greatly improve production efficiency, improve the working environment during notching, and improve safety during work. there is.

In the present invention, the upper and lower portions of the substrate 1 are supported by the upper guide part 400 and the lower guide part 500 in the notching operation section of the substrate 1, and the upper and lower directions generated during the transfer of the substrate 1 By minimizing the vibration of the laser notching, precision and work efficiency can be greatly improved.

In addition, the present invention allows the substrate 1 to enter the notching operation section at an upward slope and discharges the substrate 1 at a downward slope after work in the notching section, thereby minimizing the shaking in the up and down directions generated during the transfer of the substrate for laser notching. Precision and work efficiency can be greatly improved during work.

It is to be noted that the present invention is not limited to the above-described embodiments, but can be variously modified and implemented without departing from the gist of the present invention, which is included in the configuration of the present invention.

1: substrate 1a: electrode sheet
1b: electrode tab 100: first winding roll unit
200: second winding roll unit 300: laser generating equipment
400: upper guide part 400a: first rotating member for transporting substrate
410: laser pass hole 411: first side
412: second side 413: third side
414: fourth side 500: lower guide part
500a: second rotating member for substrate transfer 510: laser damper unit
600: guide spacing adjusting unit 610: spacing adjusting bolt member
620: upper support 630: bolt rotation motor
640: spacing adjustment screw member 650: screw support
660: screw rotation motor 700: support roll for first operation
800: second support roll unit 900: first upper support roll unit
1000: second upper support roll unit 1100: first transfer guide roll unit
1300: scrap recovery unit 1310: upper scrap intake unit
1311: first width direction transfer unit 1312: first suction angle adjusting unit
1312a: first intake pipe support bracket member
1312b: first rotation motor 1313: first suction height adjusting unit
1320: lower scrap suction part 1321: second width direction transfer part
1322: second suction angle adjusting unit
1322a: second intake pipe support bracket member
1322b: second rotation motor 1323: second suction height adjusting unit

Claims (18)

A first winding roll unit on which the unprocessed substrate is wound;
a second take-up roll unit for transporting the substrate by winding and recovering the notched substrate after being unwound from the first take-up roll unit;
a laser generating device that irradiates a laser to the substrate in a notching operation section between the first winding roll unit and the second winding roll unit; and
A laser notching device capable of recovering scrap, characterized in that it comprises a scrap recovery unit located at an exit side of the notching operation section to suck in scrap generated after the notching operation of the substrate.
The method of claim 1,
The scrap recovery unit,
an upper scrap suction unit located on the upper side of the substrate; and
A laser notching device capable of recovering scrap, comprising a lower scrap suction part located on the lower side of the substrate.
The method of claim 2,
Support roll unit for the first operation and the support roll unit for the second operation in which the notching operation section is located between;
a first upper support roll unit spaced apart from one side of the first support roll unit for support and supporting an upper surface of the substrate entering the notching operation section; and
Further comprising a second upper support roll part positioned at a distance from the other side of the second work support roll part and supporting an upper surface of the substrate exiting the notching work section,
The first upper support roll part and the second upper support roll part are positioned lower than the first working support roll part and the second working supporting roll part.
The method of claim 3,
The upper scrap suction unit is positioned inclined at a first recovery angle with respect to the horizontal surface of the substrate between the laser generating equipment and the second working support roll unit, and the lower scrap suction unit is located between the second working support roll unit and the second working support roll unit. A laser notching device capable of recovering scrap, characterized in that positioned inclined at an angle for the second recovery between the second upper support roll units.
The method of claim 4,
The laser notching device capable of recovering scrap, characterized in that the first recovery angle is formed equal to or larger than the second recovery angle.
The method of claim 4,
A laser notching device capable of recovering scrap, characterized in that the distance between the substrate and the upper scrap suction part in the vertical direction is shorter than the distance between the substrate and the lower scrap suction part.
The method of claim 4,
In the upper scrap suction part, the center of the suction port is located higher than the first upper support roll part and the second upper support roll part,
The laser notching device capable of recovering scrap, characterized in that the center of the suction hole in the lower scrap suction part is located lower than the first upper backup roll part and the second upper backup roll part.
The method of claim 3,
The height of the first upper backup roll unit is higher than the height of the second upper backup roll unit so that the entry angle of the substrate entering the notching operation section is lower than the discharge angle of the substrate discharged after the notching operation in the notching operation section. A laser notching device capable of recovering scrap, characterized in that formed.
The method of claim 8,
The entry angle is a laser notching device capable of recovering scrap, characterized in that it has an angle of 50 to 80% compared to the exit angle.
The method of claim 8,
The laser notching device capable of recovering scrap, characterized in that the distance between the second upper support roll unit and the second working support roll unit is shorter than the distance between the first upper support roll unit and the first working support roll unit.
The method of claim 8,
The distance between the first upper support roll unit and the first working support roll unit is 60 to 95% of the distance between the second upper support roll unit and the second working support roll unit Laser notching capable of recovering scrap, characterized in that Device.
The method of claim 3,
The laser notching device capable of recovering scrap, characterized in that it further comprises an upper guide part and a lower guide part respectively located at the upper and lower parts of the substrate in the notching operation section to control shaking of the substrate.
The method of claim 12,
The length of the upper guide part and the lower guide part is a laser notching device capable of recovering scrap, characterized in that it has a length of 30 to 90% of the distance between the first working support roll part and the second working supporting roll part.
The method of claim 12,
A laser notching device capable of recovering scrap, characterized in that it further comprises a guide interval adjusting unit for adjusting the interval between the upper guide unit and the lower guide unit.
The method of claim 14,
The guide spacing adjusting unit is a spacing adjusting bolt member whose lower end side is rotatably coupled to the lower guide unit and screwed through the upper guide unit to move the upper guide unit up and down by rotation. Recoverable laser notching device.
The method of claim 12,
A laser passage hole through which a laser for notching is passed is formed in the upper guide part and the lower guide part,
The substrate is an electrode sheet,
The laser generating equipment irradiates a laser beam to the electrode sheet being transported and cuts the edge in the width direction to a predetermined width, cutting the electrode sheet so that the electrode tab protrudes from the cut edge, and the electrode tab at a predetermined interval. continuously processed,
The laser notching device, characterized in that the length of the laser passage hole is formed smaller than the distance between the electrode tabs.
in claim 16
The laser passage hole has a first side coincident with the edge of the unprocessed electrode sheet in the width direction in the width direction, a second side coincident with the cut line of the electrode sheet and parallel to the first side, and the first side and the second side. A square hole including a third side connecting one side of the side and a fourth side connecting the other side of the first side and the second side,
The laser generating device moves a laser beam diagonally from a first vertex where the first side and the third side meet to a fourth vertex where the second side and the fourth side meet, and then moves the laser beam from the fourth vertex to the second side. It linearly moves to a third vertex where the second side and the third side meet, and diagonally moves from the third vertex to a fourth vertex where the first side and the fourth side meet. A laser notching device capable of recovering scrap, characterized in that for cutting the strip-shaped strip except for.
The method of claim 12,
A first rotation member for transporting a plurality of substrates that roll in contact with the upper surface of the substrate is protruded from the lower surface of the upper guide unit, and on the upper surface of the lower guide unit for transporting a plurality of substrates that roll in contact with the lower surface of the substrate. A laser notching device capable of recovering scrap, characterized in that the second rotating member is positioned to protrude.

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