KR102656672B1 - Laser notching apparatus capable of collecting scrap - Google Patents

Abstract

The present invention relates to a laser notching device capable of recovering scrap, a first winding roll unit on which an unprocessed substrate is wound, a second winding roll unit that winds and recovers the notched substrate after being unwound from the first winding roll unit and transports the substrate; A laser generating device that irradiates a laser to the substrate in the notching work section between the first winding roll section and the second winding roll section, and is located on the exit side of the notching work section and sucks scrap generated after the notching work of the substrate. By immediately sucking and processing scrap cut from the substrate after laser notching, including the scrap recovery section, it prevents defects in the process caused by scrap, greatly improves production efficiency, improves the working environment during notching, and improves work environment during notching. Safety can be improved.

Description

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

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

In recent years, the need for and demand for electric vehicles has been increasing in order to reduce the demand for portable electronic devices such as laptops, tablet PCs, and smartphones, as well as carbon emissions from fossil fuels.

Accordingly, the demand for secondary batteries is increasing significantly, and there is a trend to develop secondary batteries with high capacity and high performance.

Generally, a secondary battery has a structure that includes an electrode body consisting of a positive electrode and a negative electrode, a separator located between the positive electrode and the negative electrode, and an electrolyte solution or solid electrolyte injected into the battery case.

The electrode body of a secondary battery is manufactured in various shapes and sizes depending on the shape or size of the battery case.

Accordingly, the electrode body is cut into a preset shape and size through a notching process.

The electrode sheet is cut into a preset shape and size by a laser notching device, and at this time, the tab, which is the connecting part of the electrode, is cut together.

A conventional laser notching device unwraps the electrode sheet from a first winding roll on which the electrode sheet is wound, winds it on another second winding roll, and then cuts the electrode sheet into a preset shape and size with a laser device.

The conventional laser notching device had a problem in that the cut pieces, or scrap, generated by cutting the electrode sheet with the laser equipment could not be recovered, causing defects in the process.

In addition, the conventional laser notching device had the inconvenience of having to perform a separate cleaning operation to dispose of the scrap generated during the notching operation, and there was a risk that the scrap could fly out during the operation and cause injury to the worker.

In addition, the conventional laser notching device shakes vertically in the transfer direction while transferring the electrode sheet wound on the first winding roll to the second winding roll. Therefore, when performing the notching process with the laser equipment, the electrode sheet is damaged. 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)

The purpose of the present invention is to provide a laser notching device capable of recovering scrap that can prevent defects in the process caused by scrap by suctioning scrap cut from the substrate after the laser notching operation and immediately recovering and processing it.

Another object of the present invention is a laser capable of recovering scrap that can minimize shaking in the up and down directions that occurs during transport of the substrate by supporting the upper and lower parts of the substrate with the upper and lower guide portions in the notching work section of the substrate. The purpose is to provide a notching device.

Another object of the present invention is to prevent upward and downward shaking that occurs during transport of the substrate by slanting upward when the substrate enters the notching section of the substrate and discharging it at a downward angle when discharged after work in the notching section. The aim is to provide a laser notching device that allows for minimal scrap recovery.

In order to achieve the above object, an embodiment of the laser notching device capable of recovering scrap according to the present invention includes a first winding roll on which an unprocessed substrate is wound, and a notched substrate after being unwound from the first winding roll. A second winding roll unit that collects and transfers the substrate, a laser generating device that irradiates a laser to the substrate in a notching work section between the first winding roll section and the second winding roll section, and is located on the exit side of the notching work section and It is characterized by including a scrap recovery unit that sucks scrap generated after the notching operation of the substrate.

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

One embodiment of the laser notching device capable of recovering scrap according to the present invention includes a first work backing roll part and a second work backing roll part with a notching work section between them, and are spaced apart on one side of the first work backing roll part. A first upper backup roll unit supporting the upper surface of the substrate entering the notching work section and a second upper backup roll located spaced apart from the other side of the second work backing roll section and supporting the upper surface of the substrate exiting the notching work section. It may further include a portion, wherein the first upper backup roll portion and the second upper backup roll portion may be positioned lower than the first work backing roll portion and the second work backing roll portion.

In the present invention, the upper scrap suction part is positioned between the laser generating equipment and the second work support roll part to be inclined at a first recovery angle with respect to the horizontal surface of the substrate, and the lower scrap suction part is positioned between the second work support roll part. It may be positioned to be inclined at a second recovery angle between the roll part and the second upper backup roll part.

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

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

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

In the present invention, the height of the first upper backup roll is located higher than the height of the second upper backup roll, so that the entry angle of the substrate entering the notching work section is adjusted to the discharge of the substrate after the notching operation in the notching work section. It can be formed lower than the angle.

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

In the present invention, the distance between the second upper backup roll part and the second work backing roll part may be shorter than the distance between the first upper backup roll part and the first work backing roll part.

In the present invention, the distance between the first upper backup roll part and the first work backing roll part may be 60 to 95% of the distance between the second upper backup roll part and the second work backing roll part.

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 located at the upper and lower parts of the base material in the notching work section, respectively, to control shaking of the base material. 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 first work backing roll part and the second work backing roll part.

One embodiment of the laser notching device capable of recovering scrap according to the present invention may further include a guide gap adjustment unit that adjusts the gap between the upper guide part and the lower guide part.

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

In the present invention, a laser passing hole through which a laser for a notching operation passes is formed in the upper guide part and the lower guide part, the substrate is an electrode sheet, and the laser generating equipment irradiates the laser beam with the electrode sheet being transmitted. The electrode sheet is cut so that the electrode tab protrudes from the cut edge while cutting the edge in the width direction to a preset width. The electrode tab is continuously processed at a preset interval, and the length of the laser passage hole is determined by the electrode sheet. It can be formed smaller than the spacing of the tabs.

In the present invention, the laser passing hole includes a first side aligned with the width direction edge of the unprocessed electrode sheet in the width direction, a second side aligned with the cutting line of the electrode sheet and parallel to the first side, and the first side and It is a square hole including a third side connecting one side of the second side and a fourth side connecting the first side and the other side of the second side, and the laser generator equipment directs a laser beam between the first side and the third side. Move diagonally from the first vertex where the sides meet to the fourth vertex where the second side and the fourth side meet, and then move from the fourth vertex along the second side to the third vertex where the second side and the third side meet. By moving straight and then diagonally from the third vertex to the fourth vertex where the first side and the fourth side meet, a strip-shaped strip excluding the electrode tab can be cut from the electrode sheet.

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

The present invention prevents defects in the process caused by scrap by immediately sucking and processing scrap cut from the substrate after laser notching, greatly improves production efficiency, improves the working environment during notching, and improves safety during work. It has an improving effect.

The present invention greatly improves precision and work efficiency during laser notching work by supporting the upper and lower parts of the base material with the upper and lower guide parts in the notching work section of the base material to minimize shaking in the up and down directions that occurs during transport of the base material. It has an effect.

In addition, the present invention allows the substrate to enter the notching section at an upward angle, and discharges the substrate at a downward angle after work in the notching section, thereby minimizing the upward and downward shaking that occurs during transport of the substrate, thereby improving precision and work efficiency during laser notching. It has the effect of greatly improving.

1 is a schematic diagram showing an embodiment of a laser notching device capable of recovering scrap according to the present invention.
Figure 2 is an enlarged view showing the notching work section in one embodiment of the 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 the movement path of a laser beam for processing within a laser passing hole in an embodiment of the laser notching device capable of recovering scrap according to the present invention.
Figure 5 is an enlarged view showing the notching work section in another embodiment of the 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 portion and a lower guide portion in an embodiment of the laser notching device according to the present invention.
Figure 7 is a front view showing another embodiment of the upper guide portion and the lower guide portion in one embodiment of the laser notching device capable of recovering scrap according to the present invention.
Figure 8 is a front view showing another embodiment of the guide spacing adjustment unit in one embodiment of the 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 the accompanying drawings as follows. Prior to the detailed description of the present invention, the terms or words used in the specification and claims described below should not be construed as limited to their ordinary or dictionary meanings. Therefore, 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 the entire technical idea of the present invention, so various equivalents that can replace them at the time of filing the present application It should be understood that variations and variations may exist.

Figure 1 is a schematic diagram showing an embodiment of a laser notching device capable of recovering scrap according to the present invention, and Figure 2 is an enlarged view of the notching work section in an embodiment of the 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 the unprocessed substrate (1) is unwound from the first winding roll unit (100) and the first winding roll unit (100). It includes a second winding roll unit 200.

As an example, the base material 1 is an electrode sheet 1a used as an electrode body in a secondary battery, and an embodiment of the laser notching device capable of recovering scrap according to the present invention is a 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.

It should be noted that, in addition to the electrode sheet 1a, the substrate 1 can 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 a laser notching operation, and the substrate 1 unrolled from the first winding roll unit 100, that is, the electrode sheet 1a ) is transferred.

The second winding roll unit 200 receives the rotational force of the rotary motor and rotates in the direction of winding the electrode sheet 1a to wind and recover the laser notched electrode sheet 1a that is unwound from the first winding roll unit 100.

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

As an example, the laser generator equipment 300 is located on the upper side of the electrode sheet 1a being transported in the notching work section and radiates a laser beam to the lower side to cut the electrode sheet 1a.

The laser generator equipment 300 is a known laser device that moves the laser generator to cut a pre-designed shape using a laser beam. It can be modified and implemented in various ways, so a more detailed description will be omitted.

At the exit side of the notching work section, a scrap recovery unit 1300 is located that sucks scrap generated after the notching work on the substrate 1.

The scrap recovery unit 1300 may include a suction pipe member located on the outlet side of the notching work section to suck in scrap, and an inhaler connected to the suction pipe member to suck air through the suction pipe and suck the scrap together.

It should be noted that the inhaler can be implemented in various modifications to known suction structures including a vacuum pump, and further detailed description will be omitted.

Although not shown, the scrap recovery unit 1300 further includes a scrap storage unit (not shown) that stores scrap sucked through the suction pipe member.

The scrap storage unit (not shown) separately collects and stores scrap generated after the laser notching operation, and if more than a certain amount is collected, the scrap collected in the scrap storage unit can be transferred to another processing facility for processing.

In addition, in the notching work section, an upper guide part 400 and a 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 work section to prevent the electrode sheet 1a from shaking up and down.

The upper guide part 400 and the lower guide part 500 are located across the width direction of the electrode sheet 1a and guide the linear movement of the electrode sheet 1a therebetween, and the upper and lower guide parts 1a and 500 are positioned across the width direction of the electrode sheet 1a. Prevent shaking in the downward direction. Here, the up and down directions refer to the direction from the substrate 1 toward the laser generator 300 and the opposite direction, respectively.

The electrode sheet 1a, that is, the base material 1, is transferred from the first winding roll unit 100 to the second winding roll unit 200, and laser notching is performed during the transfer. During transfer, it sloshes, that is, shakes in the up and down directions. It can happen.

If the electrode sheet 1a, that is, the substrate 1, is shaken in the up and down directions during the notching work section, the focus of the laser beam irradiated from the laser generator 300 is at the cutting location, that is, on the electrode sheet 1a. Because it is not positioned accurately, the notching work cannot be performed smoothly, and the precision of the notching work 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 work section and prevent the electrode sheet 1a from shaking in the up and down 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 work section to further prevent the electrode sheet 1a from shaking left and right. 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 are the directions 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, which is perpendicular to the transfer direction of the substrate 1. Each means:

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

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

The laser passing hole 410 is formed in a shape corresponding to the electrode tab 1b, so that even if the 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 portion 400, thereby preventing the substrate 1. Incorrect cutting accidents can be prevented, and damage caused by malfunction of the laser generating equipment 300 can be minimized by performing notching work only within the hole.

In addition, a laser damper unit 510 that absorbs the laser beam that has passed through the substrate 1 and the laser passing hole 410 is located on the lower side of the lower guide unit 500.

The laser damper unit 510 absorbs the laser beam that has passed through the laser passage hole 410 and prevents the laser beam from damaging other structures or being reflected and causing injury to workers.

As an example, the laser damper unit 510 is a damper made of copper. In addition, since it can be implemented in various modifications using known materials that can absorb a laser beam, a more detailed description will be omitted.

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

The guide gap adjusting part 600 is rotatably coupled to the lower guide part 500 at its lower end, and is screwed through the upper guide part 400 to move the upper guide part 400 up and down by rotation. As an example, the spacing adjustment bolt member 610 is used.

As an example, the spacing adjustment bolt member 610 is located 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 base material 1, and is rotated. The gap between the upper guide part 400 and the lower guide part 500 can be adjusted by moving the upper guide part 400 up and down.

Meanwhile, the laser notching device capable of recovering scrap according to the present invention further includes a first work support roll unit 700 and a second work support roll unit 800, with a notching work section positioned between them.

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

The first work backing roll part 700 and the second work backing roll part 800 are positioned at the same height so that the electrode sheet 1a is horizontal in the notching work section, and the upper guide part 400 and the lower guide part 500 ) is guided so that the electrode sheet (1a) can pass horizontally between them.

The first upper support roll part 900 and the second support roll part for supporting the upper surface of the electrode sheet 1a, that is, the substrate 1, which are positioned spaced apart on one side of the first support roll part 700 and enter the notching work section. It further includes a second upper backup roll portion 1000 that is positioned spaced apart on the other side of 800 and supports the upper surface of the electrode sheet 1a, that is, the substrate 1, which exits in the notching work section.

One side of the first work backing roll unit 700 is in the direction toward the first winding roll part 100, that is, the entrance side of the notching work section, and the other side of the second work backing roll part 800 is towards the second winding roll part 200. Make sure to indicate the direction you are facing, that is, the exit side of the notching work section.

The first upper backup roll unit 900 and the second upper backup roll unit 1000 are positioned lower than the height of the first work backing roll part 700 and the second work backing roll part 800 to form the electrode sheet 1a, that is, the substrate ( 1) is inclined to the upper side and enters the notching work section, and in the notching work section, notching is performed while moving horizontally through the first work backing roll part 700 and the second work backing roll part 800, and after the notching work, it is inclined to the lower side and notched. Emitted from the work area.

Accordingly, the tension is effectively controlled to prevent shaking of the electrode sheet 1a during the laser notching operation, that is, in the notching work section, and to enable 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 located higher than the height of the second upper backup roll unit 1000, so that the entry angle α of the substrate 1 entering the notching work section is adjusted to the notching work section. It is formed lower than the discharge angle (β) of the substrate 1 that is discharged later.

That is, the entry angle (α) of the substrate 1 entering the notching work section is lower than the discharge angle (β) of the substrate 1 being discharged from the notching work section, but is 50 to 80% compared to the discharge angle (β). It can have an angle of

The entry angle (α) of the substrate 1 entering the notching work section may have an angle of 55 to 75% of the discharge angle (β) of the substrate 1 being discharged from the notching work section.

The entry angle (α) of the substrate 1 entering the notching work section may have an angle of 60 to 70% of the discharge angle (β) of the substrate 1 being discharged from the notching work section.

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

In addition, the distance (d ₁ ) between the second upper backup roll unit 1000 and the second work backing roll unit 800 is greater than the distance (d ₂ ) between the first upper backup roll unit 900 and the first work backing roll unit 700. Since it is formed to be short, the tension of the electrode sheet 1a can be controlled more effectively.

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

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

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

The distance (d _{1 )} between the second upper backup roll unit 1000 and the second work backing roll unit 800 is 60 ~ The entry angle (α) of the substrate 1 entering the notching work section and the discharge angle (β) of the substrate 1 being discharged from the notching work section by having a distance of 95%, preferably 80 to 90%. can be controlled at an appropriate angle, and the tension of the substrate (1) transported horizontally in the notching work section is effectively controlled to minimize shaking in the up and down directions, and the focus of the laser beam is kept constant on the surface of the substrate (1). so that it can be positioned properly.

In addition, the length (L ₁ ) of the electrode sheet 1a covered by the upper guide portion 400 and the lower guide portion 500, that is, the length (L ₁ ) of the upper guide portion 400 and the lower guide portion 500 ) is formed shorter than the distance (d ₃ ) between the first work backing roll part 700 and the second work backing roll part 800, but the distance between the first work backing roll part 700 and the second work backing roll part 800 ( It can have a length of 30 to 90% compared to d ₃ ).

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 40 to 65% of the distance (d ₃ ) between the first work support roll part 700 and the second work support roll part 800.

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% of the distance (d ₃ ) between the first work support roll part 700 and the second work support roll part 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 serve as the first work support roll. It is positioned so as not to interfere with the roll unit 700 and the second work 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 part 400 and the lower guide part 500 have a length of less than 30% of the distance (d ₃ ) between the first work backing roll part 700 and the second work backing roll part 800, the electrode sheet (1a) ) is too small to properly control the shaking of the electrode sheet 1a in the up and down directions.

In addition, if the upper guide part 400 and the lower guide part 500 have a length exceeding 90% of the distance (d ₃ ) between the first work backing roll part 700 and the second work backing roll part 800, It is too close to the backing roll part 700 for the first work and the backing roll part 800 for the second work, so the frictional force of the electrode sheet 1a and the support for the second work between the backing roll part 700 for the first work and the upper guide part 400 The friction force increases between the loam part and the lower guide part 500, and to resolve this, the gap between the first work support roll part 700 and the upper guide part 400 is widened, and the second work support roll part 800 and the lower guide are increased. Since the spacing between parts 500 needs to be widened, the overall size of the facility increases, resulting in a problem that requires a lot of space.

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 work backing roll part 700 and the second work backing roll part 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%, the friction force generated when the electrode sheet 1a passes through the upper guide part 400 and the lower guide part 500 is minimized, and the electrode sheet (1a) is used in the notching work section. 1a) shaking in the up and down directions can be controlled stably.

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 portion 1320 located on the lower side of the substrate 1.

The scrap recovery unit 1300 first sucks and processes scrap through the upper scrap suction unit 1310 located on the upper side of the substrate 1, and disposes of the scrap that is not sucked in from the upper scrap suction portion 1310 to the substrate ( 1), an accident in which scrap is not sucked is prevented by suctioning and processing the scrap through the lower scrap suction part 1320 located on the lower side.

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

In addition, the upper scrap suction part 1310 is positioned between the laser generating equipment 300 and the second work support roll part 800 to be inclined at the first recovery angle θ ₁ with respect to the horizontal plane of the substrate 1. And, the lower scrap suction part 1320 is positioned inclined at the second recovery angle θ ₂ between the second work support roll part 800 and the second upper support roll part 1000.

The base material 1 is positioned horizontally in the notching work section by the first work support roll unit 700 and the second work support roll part 800, which have the same height, and have a first recovery angle θ ₁ and a second recovery angle. It should be noted that the angle θ ₂ is an angle inclined with respect to the substrate 1 positioned horizontally by the first work support roll unit 700 and the second work support roll unit 800 in the notching work section.

The first recovery angle (θ ₁ ) is formed to be equal to or greater than the second recovery angle (θ ₂ ) so that the upper scrap suction unit 1310 immediately after the substrate 1 is notched by the laser beam of the laser generating equipment 300 ), and if it cannot be recovered to the upper scrap suction part 1310, it can be recovered to the lower scrap suction part 1320.

In addition, the distance between the substrate 1, that is, the electrode sheet 1a, and the upper scrap suction part 1310 based on the vertical direction is between the substrate 1, that is, the electrode sheet 1a and the lower scrap suction part 1320. It is shorter than the spacing, allowing scrap to be efficiently recovered by inertia in the direction of movement of the base material (1).

In addition, the center of the suction port in the upper scrap suction unit 1310 is located higher than the first upper backup roll unit 900 and the second upper backup roll unit 1000, so that the scrap cut during the horizontal movement of the substrate 1 is sucked into the upper scrap. It allows for smooth suction through the part 1310.

The center of the suction port in the lower scrap suction part 1320 is located lower than the first upper backup roll part 900 and the second upper backup roll part 1000, so that the scrap cut from the substrate 1, which is discharged at a downward angle after the notching operation, is disposed at the lower part. It allows the scrap to be smoothly sucked through the suction part 1320.

Meanwhile, an embodiment of the laser notching device capable of recovering scrap according to the present invention includes a first transfer guide roll unit that guides the electrode sheet 1a unwound from the first winding roll unit 100 to the first upper support roll unit 900. (1100) and a second transfer guide roll unit 1200 that guides the electrode sheet 1a discharged through the second upper backup roll unit 1000 to the second winding roll unit 200.

Accordingly, the electrode sheet 1a unwound from the first winding 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 the notching operation. The electrode sheet 1a, which enters the section and is discharged through the second upper support roll unit 1000 after laser notching in the notching work section, is guided through the second transfer guide roll unit 1200 and is connected to the second winding roll unit 200. It can be smoothly wound and recovered.

The first transfer guide roll unit 1100 and the second transfer guide roll unit 1200 may be arranged in plural numbers along the transfer path of the base material 1, that is, the electrode sheet 1a, which transfers the base material 1 in a roll-to-roll manner. It should be noted that various modifications can be made using the known transport structure.

Figure 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 recovering 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 is to cut one edge of the electrode sheet 1a, that is, the edge in the width direction, to a preset width while transporting the electrode sheet 1a, and to cut the cut edge. Cut the electrode sheet (1a) so that the square-shaped electrode tab (1b) protrudes, and attach the electrode tab (1b) to the width direction edge of the electrode sheet (1a) at a preset interval in the longitudinal direction of the electrode sheet (1a). Processed continuously.

The laser passing hole 410 is a square having a width equal to the width cut from the width direction edge of the electrode sheet 1a, that is, a width equal to the width of the electrode tab 1b, and a length equal to the length of the electrode tab 1b. Take a hole as an example.

A laser passage hole 410 is formed in the upper guide part 400 and the lower guide part 500, having a square shape of the same size as the square electrode tab 1b, corresponding to the shape of the electrode tab 1b, The length (L ₂ ) of the laser passage hole 410 is formed to be smaller than the spacing (d ₄ ) of the electrode tab (1b), leaving the electrode tab (1b) within the laser passage hole (410) and extending to the very edge of the electrode sheet (1a). The cutting edge can be cut at a certain width, that is, the part other than the electrode tab (1b) can be cut.

The laser generator 300 radiates a laser beam into the laser passing hole 410 and cuts the edge to a certain width, cutting off the portion excluding the electrode tab 1b, leaving a square-shaped electrode tab 1b. The laser notching operation to form (1b) is performed continuously at preset intervals so that the electrode tabs (1b) protrude at regular intervals from the edge of the electrode sheet (1a) being transported.

Figure 4 is a schematic diagram illustrating the movement path of the laser beam for processing within the laser passing hole 410 in an embodiment of the laser notching device capable of recovering scrap according to the present invention. Referring to Figure 4, the laser passing hole ( 410 has a first side 411 aligned with the width direction edge of the unprocessed electrode sheet 1a in the width direction, and a second side 412 aligned with the cutting line of the electrode sheet 1a and parallel to the first side 411. ), the third side 413 connecting one side of the first side 411 and the second side 412, the fourth side 414 connecting the other side of the first side 411 and the second side 412 ) is an example of a square hole.

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 work section, and the first side 411 and the second side 412 ) is the direction toward the second winding roll unit 200, that is, the exit side of the notching work section.

Within the square-shaped laser passing hole 410, the laser beam is transmitted from the first vertex where the first side 411 and the third side 413 meet to the fourth point where the second side 412 and the fourth side 414 meet. After moving diagonally to the vertex, move straight 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. It moves diagonally to the fourth vertex where 411 and the fourth side 414 meet, and cuts the portion of the electrode sheet 1a excluding the electrode tab 1b 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, thereby processing the laser notching device. By moving the light source or internal optical member in the generating equipment 300, the laser beam is moved diagonally from the first vertex to the fourth vertex, moved straight 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 from the edge of the electrode sheet 1a being linearly transported, leaving only the square-shaped electrode tab 1b.

That is, one embodiment of the laser notching device capable of recovering scrap according to the present invention moves the laser beam diagonally from the first vertex to the fourth vertex within the laser passing hole 410, and from the fourth vertex to the third vertex. After moving it in a straight line, it is moved diagonally from the third vertex to the second vertex to cut strips with a certain width at regular intervals, leaving electrode tabs (1b) between the cut strips.

Meanwhile, Figure 5 is an enlarged view of the notching work section in another embodiment of the laser notching device capable of recovering scrap according to the present invention, and with reference to Figure 5, another embodiment of the scrap recovery unit 1300 is shown below. This is explained in more detail.

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, and removes the scrap generated from the substrate 1 by the notching operation using the laser generating equipment. The position of the upper scrap suction part 1310 can be changed depending on the location.

As an example, the first width transfer part 1311 is a ball screw type linear actuator. In addition, it includes a rack gear and a pinion gear engaged with the rack gear and rotated by a motor, and a rack that converts the rotational force of the motor into linear movement. It should be noted that since it can be implemented in various modifications using known linear moving devices such as pinion structures and hydraulic cylinders, a more detailed description will be omitted.

The scrap recovery unit 1300 may further include a first suction angle adjustment unit 1312 that can adjust the suction angle of the upper scrap suction unit 1310 by rotating the upper scrap suction unit 1310.

The first suction angle adjusting unit is mounted on the first intake pipe support bracket member 1312a, the upper scrap suction portion 1310 being rotatably hinged, and the first intake pipe support bracket member 1312a, and the upper scrap suction portion 1310 ) includes a first rotation motor (1312b) that rotates.

The scrap recovery unit 1300 may further include a first suction height adjustment unit 1313 that can adjust the height of the upper scrap suction unit 1310 by moving the upper scrap suction unit 1310 up and down.

As an example, the first suction height adjuster 1313 is a hydraulic cylinder, and in addition, it includes a ball screw-type linear actuator, a rack gear, and a pinion gear engaged with the rack gear and rotated by a motor to convert the rotational force of the motor into linear movement. It should be noted that it can be implemented in various modifications using known lifting and lowering devices such as a converting rack and pinion structure, so a more detailed description will be omitted.

The first suction height adjuster 1313 moves the first suction angle adjuster 1312 up and down, and the first width direction transfer part 1311 moves the first suction height adjuster 1313 to the base material (1). As an example of moving in the width direction, the upper scrap suction part 1310 can have its height adjusted by the operation of the first suction height adjuster 1313, and the suction angle can be adjusted by the first suction angle adjuster 1312. In addition to this possibility, position adjustment 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 width direction transfer unit 1321 that transfers the lower scrap suction unit 1320 to the left and right, thereby removing the waste generated in the substrate 1 by the notching operation by the laser generating equipment. The position of the lower scrap suction part 1320 can be changed depending on the position of the scrap.

As an example, the second width transfer part 1321 is a ball screw type linear actuator, and in addition, it includes a rack gear and a pinion gear engaged with the rack gear and rotated by a motor, and a rack that converts the rotational force of the motor into linear movement. It should be noted that since it can be implemented in various modifications using known linear moving devices such as pinion structures and hydraulic cylinders, a more detailed description will be omitted.

The scrap recovery unit 1300 may further include a second suction angle adjustment unit 1322 that can adjust the suction angle of the lower scrap suction unit 1320 by rotating the lower scrap suction unit 1320.

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

The scrap recovery unit 1300 may further include a second suction height adjustment unit 1323 that can adjust the height of the lower scrap suction unit 1320 by moving the lower scrap suction unit 1320 up and down.

As an example, the second suction height adjuster 1323 is a hydraulic cylinder, and in addition, it includes a ball screw-type linear actuator, a rack gear, and a pinion gear engaged with the rack gear and rotated by a motor to convert the rotational force of the motor into linear movement. It should be noted that it can be implemented in various modifications using known lifting and lowering devices such as a converting rack and pinion structure, so a more detailed description will be omitted.

The second suction height adjuster 1323 moves the second suction angle adjuster 1322 up and down, and the second width direction transfer part 1321 moves the second suction height adjuster 1323 to the base material (1). As an example of moving in the width direction, the height of the lower scrap suction unit 1320 can be adjusted by the operation of the second suction height adjuster 1323, and the suction angle is adjusted by the second suction angle adjuster 1322. In addition to this possibility, it is also possible to adjust the position in the width direction of the substrate 1 by the second width direction transfer unit 1321.

The scrap recovery unit 1300 adjusts the position, height, and suction angle of the upper scrap suction part 1310 and the lower scrap suction part 1320, respectively, to efficiently suction the scrap generated after the laser notching operation of the substrate 1. It can be removed and processed in the process immediately after laser notching.

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

The electrode base 1a may have an active material applied to the upper or lower surface, and at least one of the upper guide part 400 and the lower guide part 500 may be 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 connected to the upper guide part 400 and the lower guide part 500 by tension between the rollers located on both sides, that is, the first work support roll part 700 and the second work support roll part 800. It is transported in a spaced state between the upper guide part 400 and the lower guide part 500.

In addition, the spacing between the upper guide part 400 and the lower guide part 500 is adjusted through the guide spacing 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 gap 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. A gap adjusting bolt member 610 Includes.

The spacing between the upper guide part 400 and the lower guide part 500 can be adjusted by rotating the spacing adjustment bolt member 610.

The guide spacing adjusting unit 600 is located spaced apart from the upper side of the upper guide unit 400 and is mounted on the upper support 620, which rotatably supports the spacing adjusting bolt member 610, and the upper support 620, It may further include a bolt rotation motor 630 that moves the upper guide portion 400 up and down by rotating the spacing adjustment bolt member 610 in both directions.

The guide gap adjusting unit 600 electrically moves the upper guide unit 400 up and down by the operation of the bolt rotation motor 630 to control the working conditions during the laser notching operation, that is, the thickness of the substrate 1 or the thickness of the substrate 1. ) The gap between the upper guide part 400 and the lower guide part 500 can be adjusted according to working conditions such as the transfer speed.

Figure 7 is a front view showing another embodiment of the upper guide part 400 and the lower guide part 500 in another embodiment of the laser notching device capable of recovering scrap according to the present invention. Referring to Figure 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 positioned to protrude, and the lower guide portion 500 On the upper surface, a plurality of second rotating members 500a for transporting a plurality of substrates that roll in contact with the lower surface of the electrode sheet 1a, that is, the substrate 1, are positioned to protrude.

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

The first rotating member 400a for transporting the substrate and the second rotating member 500a for transporting the substrate roll in contact with the upper and lower surfaces of the electrode sheet 1a so that the electrode sheet 1a being transported is moved to the upper guide portion 400. It makes line contact between and the lower guide part 500 and allows smooth horizontal movement.

The first rotating member 400a for transporting the substrate and the second rotating member 500a for transporting the substrate are in contact with the electrode sheet 1a between the upper guide part 400 and the lower guide part 500 to form the electrode sheet 1a. ) prevents shaking in the up and down directions, and allows the electrode sheet 1a to be smoothly moved linearly 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 rotating member 400a for transferring the substrate and the second rotating member 500a for transferring the substrate between the upper guide part 400 and the lower guide part 500 without shaking. By moving horizontally, the focus of the laser beam on the surface can be maintained.

At least one first and second rotating member 400a and 500a may be provided based on the direction perpendicular to the transport direction of the electrode sheet 1a, that is, the width direction of the substrate 1. In addition, based on the direction, each of the first and second rotating members 400a and 500a may be provided in plural numbers, and the plurality of first rotating members 400a may be arranged at equal intervals from each other on the electrode sheet 1a. You can. In addition, 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 areas that do not overlap in the vertical direction 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. Additionally, the first rotating member 400a may be disposed at a different or partially corresponding position from the second rotating member 500a in the vertical direction.

Accordingly, the embodiment can prevent shaking of the substrate 1, prevent damage to the active material formed on the substrate 1, and perform a laser notching operation.

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 passing hole 410, and Laser notching work can be performed precisely with the set shape.

Figure 8 is a front view showing another embodiment of the guide gap adjusting unit 600 in one embodiment of the laser notching device capable of recovering scrap according to the present invention. Referring to Figure 7, the upper guide part 400 and The guide spacing adjusting part 600, which adjusts the spacing of the lower guide part 500, is erected and screwed through the lower guide part 500 and the upper guide part 400, and is screwed in opposite directions. Member 640, a screw supporter 650 located spaced apart on the lower side of the lower guide part 500 or spaced apart on the upper side of the upper guide part 400 to rotatably support the spacing adjustment screw member 640 ), and a screw rotation motor 660 mounted on the screw support 650 to rotate the spacing adjustment screw member 640 in both directions.

The guide spacing adjusting unit 600 electrically rotates the spacing adjusting screw member 640 in either direction by operating the screw rotation motor 660 to adjust the upper guide portion 400 and the lower guide portion 500. The gap can be narrowed by moving them to face each other, and the gap can be widened by moving the upper guide part 400 and the lower guide part 500 in opposite directions.

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

As an example, the screw supporter 650 is positioned to be spaced apart from the lower side of the lower guide part 500 and is provided with a laser damper part 510.

The screw support 650 is provided with a laser damper unit 510 and can process the laser beam that has passed through the laser passing hole 410 by absorbing it into the laser damper unit 510.

By immediately sucking and processing the scrap cut from the substrate after the laser notching operation, process defects caused by scrap can be prevented, production efficiency can be greatly improved, the working environment during notching work can be improved, and safety during work can be improved. there is.

The present invention supports the upper and lower parts of the base material (1) with the upper guide part 400 and the lower guide part 500 in the notching work section of the base material (1), so that the upper and lower directions generated during transportation of the base material (1) are By minimizing shaking, precision and work efficiency can be greatly improved during laser notching work.

In addition, the present invention enters the substrate 1 into the notching work section at an upward angle, and discharges the substrate 1 at a downward angle after work in the notching section, thereby minimizing shaking in the up and down directions that occurs during transport of the substrate, thereby performing laser notching. Precision and work efficiency can be greatly improved during work.

It should be noted that the present invention is not limited to the above-described embodiments, but can be implemented with various changes without departing from the gist of the present invention, and these are included in the configuration of the present invention.

1: Base material 1a: Electrode sheet
1b: Electrode tab 100: First winding roll part
200: Second winding roll unit 300: Laser generating equipment
400: Upper guide part 400a: First rotating member for transporting the substrate
410: Laser passing hole 411: 1st side
412: 2nd side 413: 3rd side
414: 4th side 500: lower guide part
500a: Second rotating member for transporting materials 510: Laser damper unit
600: Guide spacing adjusting part 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 unit for first work
800: Second work support roll part 900: First upper support roll part
1000: Second upper support roll part 1100: First transfer guide roll part
1300: scrap recovery unit 1310: upper scrap suction unit
1311: First width direction transfer unit 1312: First suction angle control unit
1312a: First intake pipe support bracket member
1312b: first rotation motor 1313: first suction height adjuster
1320: Lower scrap suction part 1321: Second width direction transfer part
1322: Second suction angle control unit
1322a: Second intake pipe support bracket member
1322b: Second rotation motor 1323: Second suction height adjuster

Claims (18)

A first winding roll unit on which an unprocessed substrate is wound;
a second winding roll unit that winds and recovers the notched substrate after being unwound from the first winding roll unit and transports the substrate;
a laser generator that irradiates a laser to the substrate being transported in a notching section between the first winding roll unit and the second winding roll unit to form scrap separated from the substrate;
A scrap recovery unit located at the exit side of the notching work section to suck in the scrap and separate it from the substrate being transported;
A notching work section is located between the first work support roll part and the second work support roll part for supporting the lower surface of the substrate being transported;
a first upper backup roll portion located at the entrance of the notching work section and supporting the upper surface of the substrate entering the notching work section; and
It includes a second upper backup roll portion located at the exit side of the second work support roll portion and supporting the upper surface of the substrate exiting the notching work section,
The first upper backup roll part and the second upper backup roll part are located lower than the first work backing roll part and the second work backing roll part, and the height of the first upper backup roll part is higher than the height of the second upper backup roll part. The entry angle of the substrate positioned and entering the notching work section is formed to be lower than the discharge angle of the substrate discharged from the notching work section,
The scrap recovery unit,
An upper scrap suction unit located on the upper side of the substrate between the laser generating equipment and the second work support roll portion and inclined at a first recovery angle with respect to the horizontal plane of the substrate; and
Scrap comprising a lower scrap suction unit located on the lower side of the substrate between the second work support roll portion and the second upper backup roll portion and inclined at a second recovery angle with respect to the horizontal plane of the substrate. Laser notching device capable of recovery.
delete delete delete In claim 1,
A laser notching device capable of recovering scrap, characterized in that the first recovery angle is formed to be equal to or larger than the second recovery angle.
In claim 1,
A laser notching device capable of recovering scrap, characterized in that the gap between the substrate and the upper scrap suction part in the vertical direction is shorter than the gap between the substrate and the lower scrap suction part.
In claim 1,
The center of the suction port in the upper scrap suction part is located higher than the first upper backup roll part and the second upper backup roll part,
A laser notching device capable of recovering scrap, characterized in that the center of the suction port in the lower scrap suction portion is located lower than the first upper backup roll portion and the second upper backup roll portion.
delete In claim 1,
A laser notching device capable of recovering scrap, characterized in that the entry angle has an angle of 50 to 80% compared to the exit angle.
In claim 1,
A laser notching device capable of recovering scrap, wherein the distance between the second upper backup roll part and the second work backing roll part is shorter than the distance between the first upper backup roll part and the first work backing roll part.
In claim 1,
Laser notching capable of recovering scrap, characterized in that the distance between the first upper backup roll part and the first work support roll part is 60 to 95% of the distance between the second upper backup roll part and the second work support roll part. Device.
In claim 1,
A laser notching device capable of recovering scrap, characterized in that it further comprises an upper guide part and a lower guide part that are respectively located at the upper and lower parts of the base material in the notching work section to control shaking of the base material.
In claim 12,
A laser notching device capable of recovering scrap, characterized in that the length of the upper guide part and the lower guide part has a length of 30 to 90% of the distance between the first work backing roll part and the second work backing roll part.
In claim 12,
A laser notching device capable of recovering scrap, characterized in that it further includes a guide spacing adjusting part that adjusts the spacing between the upper guide part and the lower guide part.
In claim 14,
The guide spacing adjusting part is a spacing adjusting bolt member whose lower end is rotatably coupled to the lower guide part and is screwed through the upper guide part to move the upper guide part up and down by rotation. Laser notching device that can be recovered.
In claim 12,
A laser passage hole through which a laser for a notching operation passes is formed in the upper guide portion and the lower guide portion,
The substrate is an electrode sheet,
The laser generator equipment radiates a laser beam onto the electrode sheet being transported and cuts the edge in the width direction to a preset width, cutting the electrode sheet so that an electrode tab protrudes from the cut edge, and the electrode tab is separated at a preset interval. is processed continuously,
A laser notching device, characterized in that the length of the laser passing hole is formed to be smaller than the spacing of the electrode tabs.
In claim 16
The laser passing hole has a first side aligned with the width direction edge of the unprocessed electrode sheet in the width direction, a second side aligned with the cutting line of the electrode sheet and parallel to the first side, and the first side and the second side. It is 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 generator equipment moves the laser beam diagonally from the first vertex where the first side and the third side meet to the fourth vertex where the second side and the fourth side meet, and then moves the laser beam diagonally from the fourth vertex to the second vertex. moves straight along to the third vertex where the second side and the third side meet, then moves diagonally from the third vertex to the fourth vertex where the first side and the fourth side meet, and removes the electrode tab from the electrode sheet. A laser notching device capable of recovering scrap, characterized in that it cuts a strip-shaped strip excluding.
In claim 12,
A first rotating member for transporting a plurality of substrates that rolls in contact with the upper surface of the substrate is protruding on the lower surface of the upper guide portion, and a first rotating member for transporting a plurality of substrates that rolls in contact with the lower surface of the substrate is positioned protruding on the lower surface of the upper guide portion. A laser notching device capable of recovering scrap, characterized in that the second rotating member is positioned to protrude.

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