Foreign matter collection device generated during laser notching and foreign matter collection method using the same

Abstract

The present invention relates to an apparatus for collecting foreign matter generated during laser notching and a method for collecting foreign matter using the same. More specifically, the present invention relates to an apparatus for collecting foreign matter generated when an electrode is provided so as to be in close contact with the outer surface of a cylindrical rotating drum and a laser beam is irradiated onto the electrode to notch an edge of the electrode, the apparatus comprising: a foreign matter collecting section having an open surface facing a notched portion of the electrode and collecting the foreign matter; a foreign matter transport section located below the foreign matter collecting section for transporting the collected foreign matter; a blowing section located above the foreign matter collecting section for injecting air downward; and a scrap guide section for guiding scrap generated by notching to the outside and below the foreign matter collecting section.

Description

[Technical Field]

[0001] This application claims priority based on Korean Patent Application No. 10-2023-0035340 dated March 17, 2023, and all content disclosed in the said Korean Patent Application is incorporated herein as part of this specification.

[0002] The present invention relates to a foreign matter collection device and collection method for collecting foreign matter generated during the electrode tab formation process using a laser. [Background technology]

[0003] In recent years, demand for rechargeable batteries capable of storing electrical energy produced by air pollution caused by the use of fossil fuels and the development of alternative energy sources due to energy depletion has increased. Rechargeable batteries are used in a wide range of everyday life, including in mobile devices, electric vehicles, and hybrid electric vehicles.

[0004] Such secondary batteries, in order to meet user demand, have a large number of battery cells arranged in small devices, but in automobiles and other large vehicles, battery modules that electrically connect a large number of battery cells or battery packs that have a large number of such battery modules are used.

[0005] On the other hand, lithium secondary batteries are classified into cylindrical or rectangular secondary batteries, in which the electrode assembly is housed in a cylindrical or rectangular metal can, and pouch-type secondary batteries, in which the electrode assembly is housed in a pouch-type case made of aluminum laminate sheet, depending on the shape of the battery case.

[0006] The electrode assembly is formed by laminating the positive electrode and the negative electrode with a separator membrane interposed between them. The positive electrode and the negative electrode are manufactured through the process of forming electrode tabs on the positive electrode sheet and the negative electrode sheet, respectively, and the process of cutting them into unit electrodes.

[0007] In particular, during the process of forming the electrode tab, a laser is irradiated to remove the remaining portion of the electrode sheet that has been uncoated, excluding the electrode tab. At this stage, if foreign matter scattered during laser notching adheres to the electrode, it can lead to defects, so all foreign matter generated must be reliably collected and removed.

[0008] Figure 1 shows the state of removing foreign matter during laser notching according to the conventional technology. As shown in Figure 1, a suction section 30 is connected to the inside of the main body 10, and a blowing section 40 consisting of a plurality of air knives 41 is provided. When the blowing section 40 blows air and foreign matter in a direction parallel to the width direction of the transported electrode sheet 1, the blown air and foreign matter are sucked into the suction section 30, which is provided to communicate with the blowing section 40, and removed.

[0009] However, since the foreign matter that flows into the intake section 30 depends on the airflow from the blowing section 40 located opposite it, there is a high possibility that some or a large amount of foreign matter will not be able to flow into the intake section 30. [Prior art documents] [Patent Documents]

[0010] [Patent Document 1] Korean Published Patent Publication No. 10-2015-0062847 [Overview of the project] [Problems that the invention aims to solve]

[0011] To solve the above-mentioned problems, the present invention aims to provide a foreign matter collection device having a structure that can reliably collect foreign matter generated during the electrode notching process using a laser.

[0012] Furthermore, the present invention aims to provide a method for collecting foreign matter that can reliably collect foreign matter generated during the electrode notching process using a laser. [Means for solving the problem]

[0013] To achieve the above objectives, the present invention provides a foreign matter collection device for laser notching, wherein an electrode is supplied so as to be in close contact with the outer surface of a cylindrical rotating drum, and a laser beam is irradiated onto the electrode E to collect foreign matter generated when the edge of the electrode is notched, and the device includes: a foreign matter collection unit positioned with one open surface facing the notched portion of the electrode E for collecting foreign matter; a foreign matter transfer unit located below the foreign matter collection unit for transferring the collected foreign matter; a blowing unit located above the foreign matter collection unit for spraying air downward; and a scrap guide unit for guiding the scrap generated by notching to the outside and below the foreign matter collection unit.

[0014] Furthermore, in the foreign matter collection device generated during laser notching according to the present invention, the foreign matter collection section includes a first surface and a second surface positioned vertically and separated by a certain distance, a third surface positioned along one vertical side edge of the first and second surfaces, and a fourth surface positioned along the upper side edge of the first and second surfaces, the third surface being provided with a second viewing window through which the laser beam passes, and the fourth surface being provided with a guide for the air downward Kan It is characterized by having an opening and a second incision.

[0015] In the foreign matter collection device generated during laser notching according to the present invention, the fourth surface is characterized in that it is inclined upward as it moves forward.

[0016] The present invention relates to a foreign matter collection device generated during laser notching, characterized in that the lower part of the other side edge in the vertical direction of the first surface and the second surface is provided with a first inclined portion and a second inclined portion that are inclined toward the rear by a certain angle, and a fifth surface is further provided that connects the first inclined portion and the second inclined portion.

[0017] In the foreign matter collection device generated during laser notching according to the present invention, the blowing section is the KanIt is characterized by including a first blowing part located at the through-hole and a second blowing part located at the second incision part.

[0018] In the foreign matter collection device generated during laser notching according to the present invention, the first blowing part includes a block-shaped first blowing part body provided with a first air inlet on the side surface and a first air injection port on the lower surface, and a first air supply member attached to the first air inlet.

[0019] In the foreign matter collection device generated during laser notching according to the present invention, the lower surface of the first blowing part is provided with a recessed part whose depth increases towards the rear.

[0020] In the foreign matter collection device generated during laser notching according to the present invention, the second blowing part includes a cylindrical or polygonal column-shaped second blowing part body provided with a second air inlet on the side surface and a slit-shaped second air injection port on the lower surface, and a second air supply member attached to the second air inlet.

[0021] In the foreign matter collection device generated during laser notching according to the present invention, the foreign matter transfer part includes a first transfer pipe connected to the foreign matter collection part and a second transfer pipe located below the first transfer pipe, and the first transfer pipe has a cone shape in which the cross-sectional area becomes smaller towards the lower side.

[0022] In the foreign matter collection device generated during laser notching according to the present invention, a first incision part cut in an arc shape is formed at the other edge part in the vertical direction of the second surface.

[0023] In the foreign matter collection device generated during laser notching according to the present invention, the first surface and the second surface are characterized in that the distance between them increases towards the front.

[0024] In the foreign matter collection device generated during laser notching according to the present invention, the scrap guide portion is characterized in that it includes a fixing portion that contacts the fifth surface and a plate-shaped guide plate having a certain curvature that is connected to the fixing portion.

[0025] In the foreign matter collection device generated during laser notching according to the present invention, a portion of the upper part of the guide plate is located inside the foreign matter collection section, while the remaining portion is located outside the foreign matter collection section and extends downward by a certain length.

[0026] Furthermore, the method for collecting foreign matter according to the present invention includes a first step of positioning a foreign matter collection device at a certain distance from a cylindrical rotating drum, and a second step of irradiating the laser beam and notching the edges of the electrodes, characterized in that air is supplied to the blowing section before the second step. [Effects of the Invention]

[0027] As explained above, the foreign matter collection device and foreign matter collection method using the present invention have the advantage of being advantageous for collecting foreign matter generated during laser notching because the foreign matter collection section has a structure in which all sides except the side facing the electrode are sealed.

[0028] Furthermore, the foreign matter collection device and foreign matter collection method using the present invention are equipped with multiple blowing sections, which enable effective flow into the foreign matter collection section and transfer to the foreign matter transfer section.

[0029] Furthermore, the foreign matter collection device and foreign matter collection method using the present invention are equipped with a scrap guide section, which not only facilitates the recovery of scrap generated by notching but also minimizes problems in the notching process caused by scrap. [Brief explanation of the drawing]

[0030] [Figure 1] This diagram shows the process of removing foreign matter during laser notching using conventional technology.

[0031] [Figure 2] This is a perspective view showing a foreign matter collection device according to a preferred embodiment of the present invention mounted near a rotating drum.

[0032] [Figure 3] Figure 2 is a perspective view of the foreign object collection device, viewed from one side.

[0033] [Figure 4] Figure 3 is a perspective view of the foreign object collection device shown in the other direction.

[0034] [Figure 5] Figure 3 is a perspective view of the foreign object collection device, seen from below.

[0035] [Figure 6] Figure 3 is a perspective view of the foreign object collection device shown above.

[0036] [Figure 7] Figure 3 is a cross-sectional view of the foreign object collection device shown in Figure 3, cut along the AA direction.

[0037] [Figure 8] Figure 3 is an exploded perspective view of the foreign object collection device shown.

[0038] [Figure 9] Figure 3 is a perspective view of the first blowing section of the foreign matter collection device shown, viewed from below.

[0039] [Figure 10] Figure 3 is a perspective view of the second blowing section of the foreign matter collection device shown, viewed from above.

[0040] [Figure 11] Figure 10 is a perspective view of the second blowing section, seen from below.

[0041] [Figure 12] Figure 10 is an exploded perspective view of the second blowing section.

[0042] [Figure 13] Figure 10 is a cross-sectional view of the second blowing section, cut along the BB direction.

[0043] [Figure 14] Figure 3 is a perspective view of the scrap guide section in the foreign matter collection device shown. [Modes for carrying out the invention]

[0044] Hereinafter, with reference to the attached drawings, embodiments that allow a person with ordinary skill in the art to carry out the present invention will be described in detail. However, in describing the operating principle of a preferred embodiment of the present invention in detail, if it is determined that a specific description of a related known function or configuration may obscure the gist of the present invention, such a detailed description will be omitted.

[0045] Furthermore, the same reference numerals shall be used for similar functional and operating parts throughout the drawings. Throughout the specification, when one part is said to be connected to another part, this includes not only direct connection but also indirect connection through other elements in between. Also, the inclusion of one component does not exclude other components unless otherwise stated, but rather means that other components may be included.

[0046] Furthermore, the X-axis direction in the drawing is defined as the width direction, the Y-axis direction as the height direction, and the Z-axis direction as the length direction.

[0047] Furthermore, "forward" refers to the direction closer to the rotating drum to which the electrodes are supplied, while "rearward" refers to the direction further away from the rotating drum.

[0048] The foreign matter collection device and foreign matter collection method using the same, which are generated during laser notching according to the present invention, will be described below with reference to the attached drawings.

[0049] Figure 2 is a perspective view showing a foreign matter collection device according to a preferred embodiment of the present invention mounted near a rotating drum. As shown in Figure 2, the foreign matter collection device of the present invention is a device for collecting foreign matter generated when notching the edge of an electrode E, and is located near a cylindrical rotating drum RD to which the electrode E is supplied.

[0050] In detail, electrode E can be divided into a positive electrode and a negative electrode. These positive and negative electrodes each have a coated portion E1 to which an active material is applied and an uncoated portion to which the active material is not applied. E2 There is an uncoated part located at the edge. E2 A laser beam is shone toward the electrode to form a tab of a specific shape. Of course, the scrap S, which is the part cut off for tab formation, must be separated from the electrode E.

[0051] On the other hand, the negative electrode sheet is manufactured by applying a slurry containing a negative electrode active material and a binder to a negative electrode current collector made of copper or other material. Examples of negative electrode active materials include carbon such as non-graphitizable carbon and graphite-based carbon; Li x Fe2O3 (0 ≤ x ≤ 1), Li x WO2(0≦x≦1), Sn x Me 1-xMetal composite oxides such as Me'yOz (Me: Mn, Fe, Pb, Ge; Me': Al, B, P, Si, Group 1, Group 2, Group 3 elements of the periodic table, halogen; 0 < x ≤ 1; 1 ≤ y ≤ 3; 1 ≤ z ≤ 8); lithium metal; lithium alloys; silicon-based alloys; tin-based alloys; metal oxides such as SnO, SnO2, PbO, PbO2, Pb2O3, Pb3O4, Sb2O3, Sb2O4, Sb2O5, GeO, GeO2, Bi2O3, Bi2O4, Bi2O5; conductive polymers such as polyacetylene; Li-Co-Ni-based materials; Si, SiO, SiO2 alone or mixtures thereof such as Si-based can be used, but are not limited thereto.

[0052] The positive electrode sheet is manufactured by applying a slurry in which a positive electrode active material and a binder are mixed to a positive electrode current collector such as an aluminum material. As the positive electrode active material, layered compounds such as lithium cobalt oxide (LiCoO2), lithium nickel oxide (LiNiO2), and compounds substituted with one or more transition metals; chemical formula Li 1+x Mn 2-x O4 (where x is 0 to 0.33), lithium manganese oxides such as LiMnO3, LiMn2O3, LiMnO2; lithium copper oxide (Li2CuO2); LiV3O8, LiV 3 O 4, vanadium oxides such as V2O5, Cu2V2O7; chemical formula LiNi 1-x M x O2 (where M = Co, Mn, Al, Cu, Fe, Mg, B or Ga and x = 0.01 to 0.3), Ni-site type lithium nickel oxides represented by; chemical formula LiMn 2-x M x O2 (where M = Co, Ni, Fe, Cr, Zn or Ta and x = 0.01 to 0.1) or lithium manganese composite oxides represented by Li2Mn3MO8 (where M = Fe, Co, Ni, Cu or Zn); LiMn2O4 in which a part of the Li in the chemical formula is substituted with an alkaline earth metal ion; disulfide compounds; Fe2(MoO4)3 and the like can be mentioned, but are not limited thereto.

[0053] Figure 3 is a perspective view of the foreign object collection device shown in Figure 2, viewed from one side; Figure 4 is a perspective view of the foreign object collection device shown in Figure 3, viewed from the other side; and Figure 5 is a perspective view of the foreign object collection device shown in Figure 3, viewed from below.

[0054] Furthermore, Figure 6 is a perspective view of the foreign object collection device shown in Figure 3, viewed from above; Figure 7 is a cross-sectional view of the foreign object collection device shown in Figure 3, cut along the AA direction; and Figure 8 is an exploded perspective view of the foreign object collection device shown in Figure 3.

[0055] Referring to Figures 2 to 8, the foreign matter collection device according to the present invention includes a foreign matter collection unit 100, a foreign matter transfer unit 200, a blowing unit 300, and a scrap guide unit 400.

[0056] First, the foreign matter collection unit 100 is positioned to face the notched portion of the electrode E, which is continuously supplied so as to be in close contact with the outer surface of the cylindrical rotating drum RD, and one side is open so that foreign matter generated during notching by the laser beam can be collected.

[0057] More specifically, the foreign matter collection section 100 forms a space by the connection of multiple surfaces to one another. The first surface 110 and the second surface 120 are positioned perpendicular to the ground and separated by a certain distance, a third surface 130 is provided along one vertical side edge of the first surface 110 and the second surface 120, and a fourth surface 140 is provided along the upper side edge of the first surface 110 and the second surface 120.

[0058] Preferably, the first surface 110 is provided with a first viewing window 111 so that the notching process of the electrode E by the laser beam can be observed with the naked eye, and the third surface 130 is provided with a second viewing window 131 so that the laser beam irradiated from a laser irradiator (not shown) can reach the uncoated portion E2 of the electrode E after passing through the foreign matter collection section 100.

[0059] Here, the second viewing window 131 is not particularly limited as long as it can be penetrated by the laser beam, and may be glass or quartz, for example.

[0060] On the fourth surface 140, the air supplied by the blowing section 300 can be directed downward, more specifically towards the foreign matter transfer section 200. Kan Entrance 141 and Kan A second incision 142 is provided in front of the passage 141, and these will be explained in detail later.

[0061] On the other hand, it is preferable that the separation distance between the first surface 110 and the second surface 120 increases as they approach the front, that is, in the direction in which the rotating drum RD is located, and it is even more preferable that the upper edges of the first surface 110 and the second surface 120 are inclined with respect to the ground so that the fourth surface 140 can move upward as it goes further forward.

[0062] When the first surface 110, the second surface 120, and the fourth surface 140 have the above configuration, the area where notching occurs can be sufficiently covered, thereby improving the ability to collect foreign matter.

[0063] In particular, a first incision portion 121, which is cut in an arc shape, is provided in a portion of the other vertical edge of the second surface 120 facing the rotating drum RD, while the other vertical edge of the first surface 110 is in a vertical state without any incisions.

[0064] The uncoated portion E2 of electrode E is located at the edge of the electrode current collector, and during the notching process, the uncoated portion E2 is typically supplied so as to be in close contact with the outer surface of the edge of the rotating drum RD.

[0065] Therefore, by forming a first incision 121 with a curvature similar to that of the rotating drum RD on the other vertical edge of the second surface 120, it is possible to position the second surface 120 close to the electrode E, and furthermore, since the first surface 110 can cover a part of the side surface of the rotating drum RD, the efficiency of collecting foreign matter is improved (see Figure 2).

[0066] Of course, referring to Figure 2, the explanation uses the example where the uncoated portion E2 is located on the right side of the rotating drum RD when viewed from the left side. Therefore, it is obvious that when the uncoated portion E2 is located on the left side of the rotating drum RD, an incision must be formed on the first surface 110.

[0067] Next, at the lower part of the other vertical edge of the first surface 110 and the second surface 120 facing the rotating drum RD, there are first inclined sections 112 and 2 inclined sections 122, respectively, which are inclined downwards by a certain angle as they move towards the rear, so that the collected foreign matter can easily move to the foreign matter transfer section 200. These first inclined sections 112 and 2 inclined sections 122 are connected by the fifth surface 150.

[0068] The first flange 160, which is detachably coupled to the foreign matter transfer section 200, is located along the lower edges of the first surface 110, second surface 120, third surface 130, and fifth surface 150 described above.

[0069] Next, we will explain the foreign matter transfer unit 200, which is located below the foreign matter collection unit 100 and is used to transfer the collected foreign matter.

[0070] The foreign matter transfer section 200 comprises a first transfer pipe 210, a second transfer pipe 220 located below the first transfer pipe 210, and a second flange 230.

[0071] The first transfer pipe 210, which is connected to the foreign matter collection section 100, is preferably cone-shaped, with its inner diameter or cross-sectional area decreasing towards the bottom, so that the collected foreign matter can be easily transferred.

[0072] The second transfer pipe 220 is connected to a container (not shown) for collecting the collected foreign matter. Although not shown in the drawings, it is preferable that a known suction means (not shown), such as a vacuum pump, is connected so that the inside of the foreign matter collection section 100 is under negative pressure.

[0073] The second flange 230, which is provided along the upper edge of the first transfer pipe 210, is fastened to the first flange 160 of the foreign matter collection section 100 described above.

[0074] The blowing section 300 is located above the foreign matter collection section 100 and sprays air downwards, and is composed of a first blowing section 310 and a second blowing section 320.

[0075] Figure 9 is a perspective view from below of the first blowing section in the foreign matter collection device shown in Figure 3. The first blowing section will be described in detail with reference to Figures 3, 7, 8, and 9.

[0076] The first blowing unit 310 is comprised of a first blowing unit fuselage 311 that receives and ejects air, and a first air supply member 312 for supplying external air to the first blowing unit fuselage 311.

[0077] In detail, the first blowing section body 311 has an outer shape that is roughly hexahedral, and is provided with one or more first air inlets 311a on both sides in the longitudinal direction (Z-axis). That is, multiple first air inlets 311b are formed on the surface facing the through-hole 141 provided on the fourth surface 140 of the foreign matter collection section 100. Of course, it is self-evident that the first air inlets 311a and the first air inlets 311b must be in communication with each other.

[0078] The first air supply member 312 is attached to the first air inlet 311a and is connected to a known air supply means (not shown), such as a compressor, to supply air to the first blowing section fuselage 311.

[0079] On the other hand, it is preferable that the lower surface of the first blowing section 310 where the first air nozzle 311b is located is provided with a recessed section 311c whose depth increases towards the rear. This is because the fourth surface 140 is inclined upward towards the front, and therefore is advantageous for guiding the air injected through the first air nozzle 311b toward the first transfer pipe 210.

[0080] Although only a pair of first air supply members 312 are shown in Figure 9, etc., it is obvious that a first air supply member must be attached to each of the first air inlets 311a, and if a sufficient amount of air can be injected through the first air injection port 311b, then a pair of first air inlets 311a or even just one first air inlet 311a may be provided.

[0081] Figure 10 is a perspective view from above of the second blowing section in the foreign matter collection device shown in Figure 3, Figure 11 is a perspective view from below of the second blowing section shown in Figure 10, Figure 12 is an exploded perspective view of the second blowing section shown in Figure 10, and Figure 13 is a cross-sectional view of the second blowing section shown in Figure 10 cut along the BB direction.

[0082] The second blowing section will be described in detail with reference to Figures 3 and 7 through 13.

[0083] The second blowing section 320 includes a second blowing section body 321 that receives and sprays air, a second air supply member 322 for supplying external air to the second blowing section body 321, and a support section 323 for fastening the second blowing section body 321 to the fourth surface 140 of the foreign matter collection section 100.

[0084] In detail, the second blowing section fuselage 321 is a hollow cylindrical or polygonal prism shape, and is provided with a second air inlet 321a on one or both sides which is fastened to the second air supply member 322, while a slit-shaped second air injection port 321b is provided along the width direction (X axis).

[0085] On the other hand, the second blowing section fuselage 321 is located on the second incision 142 of the fourth surface 140, which corresponds to the upper surface of the foreign matter collection section 100 described above, and the fourth surface 140 is inclined upward. Therefore, it is preferable that the second incision 142 is inclined so that the air injected through the second air nozzle 321b can be directed vertically downward (see Figure 13).

[0086] The support portion 323 is shown with both ends bent to grip the second blowing section fuselage 321, but the external shape can be changed as long as the second blowing section fuselage 321 can be fixed to the fourth surface 140.

[0087] The second blowing section 320 having the above-described configuration can act as a kind of air curtain, preventing foreign matter that has flowed into the foreign matter collection section 100 from escaping, and furthermore, it can be expected to prevent scrap S from being drawn into the foreign matter collection section 100.

[0088] Of course, it is self-evident that the pressure of the air injected from the first air injection port 311b, which is located further back, must be relatively greater than the pressure of the air injected through the second air injection port 321b, in order for the generated foreign matter to flow into the foreign matter collection section.

[0089] Figure 14 is a perspective view of the scrap guide section in the foreign matter collection device shown in Figure 3. The scrap guide section will be explained with reference to Figures 4, 7, and 14.

[0090] The scrap guide section 400 is for guiding the scrap S generated by notching to the outside and below the foreign matter collection section 100, and is composed of a fixing section 410 connected to the fifth surface 150, and a guide plate 420 connected to the fixing section 410. In detail, the fixing section 410 is fixed to the upper or lower surface of the fifth surface 150, and the guide plate 420 is a plate shape having a constant curvature so as to be bent in a direction facing the outer surface of the rotating drum.

[0091] Therefore, the scrap S generated by notching flows down along the guide plate 420, making it easy to recover the scrap S, and fundamentally eliminating problems in the notching process caused by the scrap S.

[0092] In particular, as shown in Figure 7, when a portion of the upper part of the guide plate 420 is located inside the foreign matter collection section 100, it can function as a barrier plate, and thus, it can be expected that foreign matter that has flowed into the foreign matter collection section 100 will not escape.

[0093] The following describes a method for collecting foreign matter using the foreign matter collection device described above.

[0094] The method for collecting foreign matter according to the present invention includes a first step of positioning a foreign matter collection device at a certain distance from a cylindrical rotating drum RD, and a second step of irradiating a laser beam to notch the edge of the electrode E.

[0095] In this first stage, the second surface 120 of the foreign matter collection unit 100 is positioned close to the rotating drum RD, while the first surface 110 is positioned to cover a portion of the side surface of the rotating drum RD.

[0096] On the other hand, the notching electrode E is supplied so as to be in close contact with the outer surface of the cylindrical rotating drum RD, but this step of supplying the electrode E may be performed before or after the step of positioning the foreign matter collection device near the cylindrical rotating drum RD.

[0097] Furthermore, it is preferable that the step of supplying air to the blowing section, or more specifically, the step of supplying air to the first blowing section and the second blowing section, be performed before the start of notching.

[0098] Furthermore, if necessary, an additional step can be taken to draw in air so that the inside of the foreign object transfer section becomes a negative pressure state.

[0099] A person with ordinary skill in the field to which this invention belongs will be able to make various applications and modifications within the scope of this invention based on the above content. [Explanation of Symbols]

[0100] 100 Foreign Matter Collection Unit

[0101] 110 Page 1

[0102] 111 First Viewing Window 112 1st slope

[0103] 120 Side 2

[0104] 121 1st incision 122 2nd slope

[0105] 130 Page 3

[0106] 131 Second Viewing Window

[0107] 140 Page 4

[0108] 141 Through-hole 142 Second incision

[0109] 150 Page 5

[0110] 160 First Flange

[0111] 200 Foreign matter transfer section

[0112] 210 1st transfer pipe 220 2nd transfer pipe

[0113] 230 Second flange

[0114] 300 Blowing section

[0115] 310 First blowing section

[0116] 311 First blown section fuselage

[0117] 311a First air inlet 311b First air nozzle

[0118] 311c sinkhole

[0119] 312 First air supply member

[0120] 320 Second blowing section

[0121] 321 Second blown section fuselage

[0122] 321a Second air inlet 321b Second air nozzle

[0123] 322 Second air supply member

[0124] 323 Support part

[0125] 400 Scrap Guide Department

[0126] 410 Fixed part

[0127] 420 Guide Plate

[0128] E-electrode

[0129] E1 Coating section E2 Uncoated section

[0130] RD Rotating Drum

[0131] S Scrap

Claims

1. An apparatus for collecting foreign matter generated when electrodes are supplied so as to be in close contact with the outer surface of a cylindrical rotating drum, and a laser beam is irradiated onto the electrodes to notch the edges of the electrodes, The open side is positioned so as to face the notched portion of the electrode, and the foreign matter collection section collects foreign matter, A foreign matter transfer section is located below the foreign matter collection section for transferring the collected foreign matter, A blowing unit located above the foreign matter collection unit, which sprays air downwards, It includes a scrap guide section for guiding the scrap generated by notching to the outside and below the foreign matter collection section, The foreign matter collection section is positioned vertically and has a first surface and a second surface separated by a certain distance, A third surface located along one of the vertical side edges of the first and second surfaces, It includes a fourth surface located along the upper edges of the first surface and the second surface, The third surface is provided with a second viewing window through which the laser beam passes. The second viewing window is made of glass or quartz. A device for collecting foreign matter generated during laser notching.

2. The foreign matter collection device generated during laser notching according to Claim 1, wherein the fourth surface is provided with a first through-hole and a second incision for guiding the air downward.

3. The aforementioned fourth surface is inclined upwards as it moves forward. The forward direction is the direction approaching the direction in which the cylindrical rotating drum is located, as described in claim 1, for collecting foreign matter generated during laser notching.

4. The lower part of the other side edge of the first and second surfaces in the vertical direction is provided with a first inclined portion and a second inclined portion that are inclined toward the rear by a certain angle, and a fifth surface is further provided that connects the first inclined portion and the second inclined portion. The rearward direction is the direction away from the direction in which the cylindrical rotating drum is located, as described in claim 3, for collecting foreign matter generated during laser notching.

5. The foreign matter collection device generated during laser notching according to claim 2, wherein the blowing section includes a first blowing section located at the first through-hole and a second blowing section located at the second incision section.

6. The foreign matter collection device generated during laser notching according to claim 5, wherein the first blowing section includes a block-shaped first blowing section body having a first air inlet on its side and a first air ejection port on its bottom surface, and a first air supply member attached to the first air inlet.

7. The lower surface of the first blowing section is provided with a recessed section whose depth increases towards the rear. The rearward direction is the direction away from the direction in which the cylindrical rotating drum is located, as described in claim 6, for collecting foreign matter generated during laser notching.

8. The foreign matter collection device generated during laser notching according to claim 5, wherein the second blowing section includes a cylindrical or polygonal prism-shaped second blowing section body having a second air inlet on its side and a slit-shaped second air injection port on its lower surface, and a second air supply member attached to the second air inlet.

9. The second incision is provided in front of the first through-hole, The forward direction is the direction approaching the direction in which the cylindrical rotating drum is located, as described in claim 5, for collecting foreign matter generated during laser notching.

10. The foreign matter transport unit includes a first transport pipe connected to the foreign matter collection unit, and a second transport pipe located below the first transport pipe, wherein the first transport pipe has a cone shape with a smaller cross-sectional area towards the bottom, as described in claim 1 for foreign matter collection devices generated during laser notching.

11. A foreign matter collection device generated during laser notching according to claim 1, wherein a first incision portion, which is cut in an arc shape, is formed on the other side edge in the vertical direction of the second surface.

12. The foreign matter collection device generated during laser notching according to claim 1, wherein the other side edge in the vertical direction of the first surface is in a vertical state without any cut portion.

13. The first and second surfaces are separated by a larger gap as they move forward. The forward direction is the direction approaching the direction in which the cylindrical rotating drum is located, as described in claim 1, for collecting foreign matter generated during laser notching.

14. The scrap guide portion includes a fixing portion that contacts the fifth surface, and a plate-shaped guide plate having a constant curvature that is connected to the fixing portion, the foreign matter collection device generated during laser notching according to claim 4.

15. A foreign matter collection device generated during laser notching according to claim 14, wherein a portion of the upper part of the guide plate is located inside the foreign matter collection section, while the remaining portion is located outside the foreign matter collection section and extends downward by a certain length.

16. A method for collecting foreign matter using a foreign matter collection device generated during laser notching as described in any one of claims 1 to 15, The first step involves positioning a foreign object collection device at a certain distance from the cylindrical rotating drum, The second step includes irradiating the electrode with the laser beam and notching the edge of the electrode, A method for collecting foreign matter generated during laser notching, wherein the step of supplying the air to the blowing section is performed before the second step.

17. The method for collecting foreign matter generated during laser notching according to claim 16, further comprising the step of drawing in air so that the inside of the foreign matter transport section becomes a negative pressure state.

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