Press notching apparatus

Abstract

A press notching apparatus related to one embodiment of the present invention comprises: an upper mold that includes a first cut part for processing an electrode tab on a first uncoated part of a coated electrode, and a second cut part disposed to be spaced a predetermined interval apart from the first cut part in the width direction of the coated electrode so as to process a second uncoated part of the coated electrode; and a first length-adjusting part for connecting the first cut part and the second cut part, and moving the first cut part and / or the second cut part in the width direction of the coated electrode in order to adjust the interval.

Description

Press notching device

[0001] The present invention relates to a press notching device, and more particularly, to a press notching device for processing an electrode tab on a coated electrode using a mold.

[0002] This application claims the benefit of priority to Korean Patent Application No. 10-2024-0102391, filed August 1, 2024, and Korean Patent Application No. 10-2025-0103728, filed July 30, 2025, the entire contents of which are incorporated herein by reference.

[0003] Secondary batteries are classified into coin-type batteries, cylindrical batteries, square batteries, and pouch-type batteries depending on the shape of the battery case.

[0004] In a secondary battery, the electrode assembly mounted inside the battery case is a power generation element capable of charging and discharging, consisting of a laminated structure of electrodes and a separator.

[0005] In addition, the electrode assembly can be classified into a jelly-roll type in which a separator is interposed between sheet-shaped positive and negative electrodes coated with active materials, a stack type in which a plurality of positive and negative electrodes are sequentially stacked with a separator interposed between them, and a stack / folding type in which stack-type unit cells are wound with a long separator film.

[0006] Figures 1 and 2 are drawings for explaining a notching process for processing electrode tabs on a coated electrode.

[0007] Referring to Fig. 1, the coating electrode (10) is a substrate (11) on which a coating layer (12) is laminated. The coating layer (12) may include an electrode active material, for example, a negative electrode active material or a positive electrode active material.

[0008] Referring to Fig. 2, the coating electrode (10) includes a holding portion (13) and a non-coated portion (14 and / or 15). The holding portion (13) is a portion where the coating layer (12) is laminated to the substrate (11). The non-coated portion (14 and / or 15) is a portion where the coating layer (12) is not laminated to the substrate (11). The non-coated portion (14 and / or 15) may be provided on both sides or one side of the holding portion (13).

[0009] The above-described coated electrode (10) can be notched into a shape that matches the specifications (full length) of the secondary battery through a notching mold (30). The notching performed in the notching mold (30) may mean, as in the meaning of 'cutting out', a process of cutting out unnecessary parts of the first and second uncoated portions (14, 15) to form electrode tabs (16), a process of forming electrode tabs (16) and cutting the coated electrode (10) to a predetermined length to form an electrode plate (20), or a process of cutting out the entire first and second uncoated portions (14, 15) on one side. The holding portion (13) of the coated electrode (10) can be cut into a holding portion (13) of an electrode plate (20) having a predetermined size.

[0010] The above notching mold (30) is for processing an electrode tab (16) on the non-coated portion (14) of the coating electrode (10) supplied to the upper side of the die (33) by moving the punch (31) upward and downward toward the die (33).

[0011] However, the conventional notching mold (30) had a problem in that when the specifications of the electrode plate (20) to be processed, for example, the size of the electrode plate (20), were changed, not only the punch (31) and the die (33), but also all the components supporting the punch (31) and the die (33) had to be remanufactured.

[0012] That is, depending on the specifications of the secondary battery, the dimensions such as the total length (A) of the electrode plate (20), the tab width (B) and tab length (C) of the electrode tab (16) provided on the electrode plate (20) may be different. Accordingly, a new notching mold (30) must be manufactured depending on the change in the dimensions of the electrode plate (20).

[0013] When manufacturing a mold according to the specifications of the above electrode plate (20), space is required to store the notching mold (30), and the mold manufacturing cost increases.

[0014] The present invention aims to provide a press notching device capable of notching a coated electrode with various specifications through a dimensionally adjustable notching mold.

[0015] In addition, the present invention aims to provide a press notching device capable of adjusting the dimensions of a mold according to the total length, tab width, and tab length of an electrode plate.

[0016] In order to solve the above problem, a press notching device according to one embodiment of the present invention includes an upper mold and a first electric field adjusting unit. The press notching device includes an upper mold including a first cutting unit configured to process an electrode tab on a first uncoated portion of a coated electrode, and a second cutting unit spaced apart from the first cutting unit at a predetermined interval along the width direction of the coated electrode to process a second uncoated portion of the coated electrode. In addition, the press notching device includes a first electric field adjusting unit configured to connect the first cutting unit and the second cutting unit and move at least one of the first cutting unit and the second cutting unit along the width direction of the coated electrode to adjust the interval.

[0017] For example, the coating electrode has a first uncoated portion and a second uncoated portion positioned on both sides along the width direction. In addition, the coating electrode has a holding portion between the first uncoated portion and the second uncoated portion.

[0018] The first electric field adjustment unit may be provided to adjust the gap between the first cutting portion and the second cutting portion based on the length of the holding portion along the width direction of the coating electrode. For example, when the length of the holding portion increases, the first electric field adjustment unit may increase the gap between the first cutting portion and the second cutting portion, and when the length of the holding portion decreases, the gap between the first cutting portion and the second cutting portion may decrease.

[0019] The first electric field control unit may include a linear driving unit for moving at least one of the first cutting unit and the second cutting unit in a straight line along the width direction of the coating electrode.

[0020] The first cutting section may include a first punching block and a second punching block arranged in parallel along the longitudinal direction of the coating electrode. The first punching block and the second punching block may be arranged adjacently and sequentially along the longitudinal direction of the coating electrode. In addition, the tab width of the electrode tab may be determined by the gap between the first punching block and the second punching block.

[0021] The first cutting portion may include a tap width adjusting portion configured to connect the first punching block and the second punching block and adjust a gap between the first punching block and the second punching block in the longitudinal direction of the coating electrode.

[0022] Additionally, the tap width adjustment unit may include a linear driving unit capable of linearly moving the second punching block relative to the first punching block.

[0023] For example, the plurality of punching blocks of the first cutting portion may be arranged to process a first cutting surface cut along the boundary between the first plain portion and the holding portion during a punching operation of the upper mold, and an electrode tab extending from the holding portion is cut in a portion of the first plain portion.

[0024] The plurality of punching blocks may include a first punching block and a third punching block arranged in parallel along the width direction of the coated electrode. In this case, the tab length of the electrode tab may be determined by the gap between the first punching block and the third punching block.

[0025] Additionally, the first cutting portion may include a first tab length adjusting portion configured to connect the first punching block and the third punching block and adjust a gap between the first punching block and the third punching block in the width direction of the coating electrode.

[0026] Additionally, the first tab length adjustment unit may include a linear driving unit capable of linearly moving the third punching block relative to the first punching block.

[0027] In addition, the plurality of punching blocks may include a second punching block and a fourth punching block arranged in parallel along the width direction of the coating electrode. At this time, the second punching block and the first punching block may be arranged in parallel along the length direction of the coating electrode, and the fourth punching block and the third punching block may be arranged in parallel along the length direction of the coating electrode. In addition, the tab length of the electrode tab may be determined by the gap between the second punching block and the fourth punching block. In addition, the first cutting portion may include a second tab length adjusting portion provided to connect the second punching block and the fourth punching block and adjust the gap between the second punching block and the fourth punching block in the width direction of the coating electrode.

[0028] Additionally, the second tab length adjustment unit may include a linear driving unit capable of linearly moving the fourth punching block relative to the second punching block.

[0029] Additionally, the second cutting portion may include a reference punching block for processing the second plain portion. For example, the reference punching block may cut the second plain portion along the boundary between the second plain portion and the holding portion during a punching operation of the upper mold, thereby processing a second cutting surface on the coated electrode.

[0030] In addition, a press notching device related to one embodiment of the present invention may include a lower mold provided to guide a punching operation of the upper mold. The lower mold may be elastically connected to the upper mold to guide the punching operation of the upper mold.

[0031] The lower mold may include a first guide portion, on which a portion including a first uncoated portion of the coating electrode is seated and positioned facing the first cut portion, a second guide portion, on which a portion including a second uncoated portion of the coating electrode is seated and positioned facing the second cut portion, and a second electric field adjusting portion, which connects the first guide portion and the second guide portion in the width direction of the coating electrode and adjusts a gap between the first guide portion and the second guide portion according to a gap between the first cut portion and the second cut portion.

[0032] Additionally, the second electric field control unit may include a linear driving unit for moving at least one of the first guide unit and the second guide unit in a straight line along the width direction of the coating electrode.

[0033] In addition, the second electric length adjustment unit may be provided to adjust the positions of the first guide unit and the second guide unit so that the first guide unit is positioned coaxially with the first cutting unit and the second guide unit is positioned coaxially with the second cutting unit. In this way, the second electric length adjustment unit may be provided to operate in conjunction with the first electric length adjustment unit provided in the upper mold.

[0034] In addition, the first guide portion includes a plurality of guide blocks spaced apart from each other so that a plurality of punching blocks of the first cutting portion are inserted during a punching operation, and the plurality of guide blocks may be arranged so that the spacing between adjacent guide blocks is adjustable.

[0035] For example, the first guide portion may include a plurality of guide blocks spaced apart from each other, each having a guide groove into which a plurality of punching blocks (first to fourth punching blocks) of the first cutting portion can be inserted. The plurality of guide blocks form the guide groove, and the size of the guide groove can be adjusted according to the spacing between the plurality of guide blocks.

[0036] The plurality of guide blocks may include first guide blocks and second guide blocks arranged sequentially along the longitudinal direction of the coating electrode. In addition, the first guide portion may include a first guide adjustment portion configured to connect the first guide block and the second guide block and adjust a gap between the first guide block and the second guide block in the longitudinal direction of the coating electrode.

[0037] Additionally, the first guide adjustment unit may include a linear driving unit for moving at least one of the first guide block and the second guide block in a straight line along the longitudinal direction of the coating electrode.

[0038] Additionally, the first guide adjustment unit can adjust the gap between the first guide block and the second guide block based on the tab width of the electrode tab.

[0039] The first guide section may be provided with two guide blocks arranged adjacent to each other in the width direction of the coating electrode so that the spacing can be adjusted along the width direction of the coating electrode.

[0040] For example, the plurality of guide blocks may include a first guide block, three guide blocks arranged side by side in the width direction of the first guide block and the coating electrode, a second guide block arranged side by side in the length direction of the first guide block and the coating electrode, and a fourth guide block arranged side by side in the width direction of the second guide block and the coating electrode.

[0041] In addition, the first guide portion may include a second guide adjustment portion configured to connect the first guide block and the third guide block and adjust the gap between the first guide block and the third guide block in the width direction of the coating electrode, and a third guide adjustment portion configured to connect the second guide block and the fourth guide block and adjust the gap between the second guide block and the second guide block in the width direction of the coating electrode.

[0042] For example, the second guide adjustment unit may be configured to connect the first guide block and the third guide block, which are adjacent to each other in the width direction of the coating electrode, and adjust the gap between the first guide block and the third guide block in the width direction of the coating electrode based on the tab length of the electrode tab.

[0043] Additionally, the second guide adjustment unit may include various types of linear driving units capable of linearly moving the third guide block relative to the first guide block.

[0044] In addition, the third guide adjustment unit may be provided to connect the second guide block and the fourth guide block, which are adjacent to each other in the width direction of the coating electrode, and to adjust the gap between the second guide block and the fourth guide block in the width direction of the coating electrode based on the tab length of the electrode tab.

[0045] Additionally, the third guide adjustment unit may include various types of linear driving units capable of linearly moving the fourth guide block relative to the second guide block.

[0046] The second guide portion includes a reference guide block arranged on the second non-conductive portion side in the longitudinal direction of the coating electrode, and the reference guide block can be provided so that a reference punching block of the second cutting portion can be inserted during a punching operation of the upper mold.

[0047] As described above, the press notching device according to one embodiment of the present invention has the following effects.

[0048] The present invention enables the adjustment of the dimensions of the processing area within the mold according to the specifications of the electrode plate (e.g., the total length of the electrode plate, the tab width, and the tab length), thereby enabling the production of electrode plates of various specifications.

[0049] In addition, since there is no need to manufacture a separate notching mold for each electrode plate specification, the cost and production time for manufacturing a new notching mold can be reduced.

[0050] In addition, there is no need to manufacture a notching mold according to the specifications of the electrode plate, so there is no need for a separate storage space to store unused notching molds.

[0051] Figures 1 and 2 are drawings for explaining a notching process for processing electrode tabs on a coated electrode.

[0052] FIG. 3 is a schematic plan view of a press notching device installed on a travel path of a coating electrode according to one embodiment of the present invention.

[0053] FIG. 4 schematically illustrates a cross-sectional side view of a press notching device along the width direction of a coating electrode in one embodiment of the present invention.

[0054] FIG. 5 schematically illustrates the structure of a first electric field adjustment unit according to one embodiment of the present invention.

[0055] FIG. 6 is a plan view of an upper mold according to one embodiment of the present invention, schematically illustrating a state in which a first overall length adjustment unit, a tab width adjustment unit, a first tab length adjustment unit, and a second tab length adjustment unit are connected to a first cutting unit and a second cutting unit.

[0056] FIG. 7 schematically illustrates the state of dimensional adjustment of the first cutting portion and the second cutting portion of the press notching device according to the specifications of the electrode plate in one embodiment of the present invention.

[0057] FIG. 7(a) schematically illustrates a state of dimensional adjustment between shear processing elements of a first press section and a second press section of a press notching device according to the specifications of an electrode plate in one embodiment of the present invention, and FIG. 7(b) schematically illustrates a plan view of an electrode substrate in which a shear processing area is indicated.

[0058] FIG. 8 is a plan view of a lower mold according to one embodiment of the present invention, schematically illustrating a state in which a second electric field adjustment unit and a plurality of die adjustment units are connected to a first die and a second die.

[0059] Figure 9 schematically illustrates the punching operation state of a press notching device according to one embodiment of the present invention.

[0060] Hereinafter, a press notching device related to one embodiment of the present invention will be described with reference to the attached drawings.

[0061] FIG. 3 is a schematic plan view of a press notching device installed on a travel path of a coating electrode according to one embodiment of the present invention, and FIG. 4 is a schematic side cross-sectional view of the press notching device along the width direction of the coating electrode according to one embodiment of the present invention.

[0062] Referring to FIGS. 3 and 4, a press notching device (100) according to one embodiment of the present invention includes an upper mold (110) including a first cutting portion (130) provided to process an electrode tab (16) on a first uncoated portion (14) of a coating electrode (10), and a second cutting portion (160) spaced apart from the first cutting portion (130) in the width direction (Y) of the coating electrode (10) and provided to cut a second uncoated portion (15) of the coating electrode (10).

[0063] The press notching device (100) may include a first electric field adjusting unit (210) configured to connect the first cutting portion (130) and the second cutting portion (160) in the width direction (Y) of the coating electrode (10) in the internal space of the upper mold (110) and adjust the gap between the first cutting portion (130) and the second cutting portion (160) based on the length of the holding portion (13) of the coating electrode (10).

[0064] Referring to FIG. 3, the upper mold (110) may include the first cutting portion (130), the second cutting portion (160), and the first electric field adjustment portion (210). The upper mold (110) may be arranged to move (descend) in a direction approaching the coating electrode (10) and punch the first and second uncoated portions (14, 15) of the coating electrode (10), respectively, through the first cutting portion (130) and the second cutting portion (160).

[0065] The above press notching device (100) is for processing the electrode tab (16) on the coated electrode (10) by adjusting the processing dimensions of the coated electrode (10) according to changes in the specifications of the electrode plate (20, see FIG. 2) of the secondary battery. The press notching device (100) according to one embodiment of the present invention may be provided to process the electrode tab (16) on the coated electrode (10) by punching the coated electrode (10) and to cut a part or the entire area of ​​the first and second non-coated portions (14, 15).

[0066] In this specification, the running direction (MD) of the coating electrode (10) may be parallel to the longitudinal direction (X) of the coating electrode (10). The width direction (Y) of the coating electrode (10) may be a direction orthogonal to the longitudinal direction (X) of the coating electrode (10).

[0067] The above press notching device (100) can perform a punching operation while the movement of the coating electrode (10) is stopped.

[0068] In the past, when the specifications of an electrode plate (20, see FIG. 2) used in a secondary battery were changed, for example, when any one of the dimensions of the total length (A+C), tab width (B), and tab length (C) of the electrode plate (20, see FIG. 2) was changed, an upper mold and a lower mold had to be newly manufactured in order to process an electrode tab (16) on a coated electrode (10) according to the changed specifications.

[0069] In contrast, the press notching device (100) according to one embodiment of the present invention can adjust the dimensions of the processing areas of the upper mold (110) and the lower mold (120) when the specifications of the electrode plate (20, see FIG. 2) are changed.

[0070] Referring to FIGS. 3 and 4, the press notching device (100) may include an upper mold (110) and a lower mold (120) that are provided to punch the coating electrode (10) to process an electrode tab (16) on the coating electrode (10).

[0071] The upper mold (110) may include the first cutting portion (130), the second cutting portion (160), the first electric length adjustment portion (210), and the punching drive portion (115).

[0072] Referring to FIG. 4, the punching drive unit (115) may be mounted on the upper mold (110), and for example, the punching drive unit (115) may be mounted on the outer surface of the upper mold (110). The punching drive unit (115) is a device for moving the upper mold (110) in a height direction (Z) perpendicular to the width direction (Y) and length direction (X) of the coating electrode (10). For example, the punching drive unit (115) may include a reciprocating cylinder (not shown).

[0073] Additionally, the first cutting portion (130), the second cutting portion (160), and the first electric length adjustment portion (210) can be mounted in the internal space of the upper mold (110).

[0074] The above first cutting portion (130) may be provided to process an electrode tab (16) on the first uncoated portion (14) of the coating electrode (10).

[0075] The second cutting portion (160) may be spaced apart from the first cutting portion (130) in the width direction (Y) of the coating electrode (10) and may be provided to cut the second uncoated portion (15) of the coating electrode (10).

[0076] FIG. 5 schematically illustrates the structure of the first electric length adjustment unit according to the present embodiment, FIG. 6 is a plan view of an upper mold according to an embodiment of the present invention, schematically illustrating a state in which the first electric length adjustment unit, the tab width adjustment unit, the first tab length adjustment unit, and the second tab length adjustment unit are connected to the first cutting unit and the second cutting unit, and FIG. 7 schematically illustrates a state in which the dimensions of the first cutting unit and the second cutting unit of the press notching device are adjusted according to the specifications of the electrode plate in one embodiment of the present invention.

[0077] Referring to FIG. 6, the first electric field adjustment unit (210) can adjust the electric field gap (D10) between the first cutting unit (130) and the second cutting unit (160) based on the length (A) of the holding unit (13) of the coating electrode (10) input to the controller (300).

[0078] In addition, the length (A) of the holding portion (13) may be the length between the boundary (13a) of the first uncoated portion (14) and the holding portion (13) and the boundary (13a) of the second uncoated portion (15) and the holding portion (13). The length (A) of the holding portion (13) may be the length along the width direction (Y) of the coating electrode (10).

[0079] The above first electric field adjustment unit (210) may include various types of linear driving units capable of moving the first cutting unit (130) in a straight line.

[0080] For example, as illustrated in FIGS. 3 to 6, the first electric field adjustment unit (210) may include a first electric field motor (211), a first electric field chain (212), and a first electric field rail (215). The first electric field motor (211) may be mounted on the second cutting unit (160). The first electric field motor (211) may be a servo motor. The first electric field motor (211) may be controlled by a controller (300).

[0081] The first electric chain (212) can be connected to the first electric motor (211). The first electric chain (212) can be mounted on the first cutting section (130).

[0082] The first electric chain (212) can move the first cutting portion (130) in the width direction (Y) of the coating electrode (10) based on the second cutting portion (160). That is, the first electric chain (212) can move the first cutting portion (130) closer to or farther away from the second cutting portion (160) depending on the driving direction of the first electric motor (211).

[0083] The first electric rail (215) may be mounted on the upper mold (110) parallel to the width direction (Y) of the coating electrode (10). The first cutting portion (130) may be movably mounted on the first electric rail (215). The first cutting portion (130) is coupled to the first electric chain (212) and may be moved along the first electric rail (215) in the movement direction of the first electric chain (212).

[0084] Referring to FIG. 5, the first electric chain (212) may include a first bracket (212a) and a plurality of chain links (212b).

[0085] The above first electric chain (212) can be provided by connecting two adjacent chain links (212b) to each other by bending them at a predetermined angle through a pin.

[0086] The first bracket (212a) may serve as an end bracket to fix the first electric chain (212) to the first cutting portion (130). The first cutting portion (130) may be mounted so as to be movable in the width direction (Y) of the coating electrode (10) along the first electric rail (215). The first cutting portion (130) may be moved along the first electric rail (215) in the movement direction of the first electric chain (212).

[0087] The end (212c) of the first electric chain (212) can be mounted on the first electric motor (211). The first electric chain (212) can move the first cutting section (130) in a direction closer to or further away from the second cutting section (160) depending on the driving direction of the first electric motor (211).

[0088] As another example, the first electric field adjustment unit (210) may include a linear motion (LM) guide (not shown) that is linearly connected to the first cutting unit (130) and the second cutting unit (160).

[0089] The above LM guide (not shown) may include a rail (not shown) and a movable block (not shown) mounted so as to be reciprocally movable along the rail.

[0090] The rail (not shown) may be mounted on the first housing (131) parallel to the width direction (Y) of the coating electrode (10). The moving block (not shown) may be mounted on the first cutting portion (130) and may be arranged to move along the rail in a direction closer to or further away from the second cutting portion (160).

[0091] As another example, the first electric field adjustment unit (210) may include a reciprocating cylinder (not shown). The reciprocating cylinder (not shown) has a cylinder body (not shown) mounted on a second cutting unit (160), a piston (not shown) movably mounted on the cylinder body is mounted on a first cutting unit (130), and the gap between the first cutting unit (130) and the second cutting unit (160) can be adjusted by adjusting the length of the piston exposed to the outside of the cylinder body.

[0092] Referring to FIGS. 3 to 6, the second cutting portion (160) may be positioned on the second non-conductive portion (15) side. The second cutting portion (160) may include a second housing (161) and a reference punching block (162).

[0093] The above reference punching block (162) can be mounted on the second housing (161) so as to be exposed to the lower portion of the second housing (161).

[0094] For example, the reference punching block (162) may be provided to cut the second non-coated portion (15) along the boundary between the second non-coated portion (15) and the holding portion (13) during the punching operation of the upper mold (110) to process a second cutting surface (18) on the coating electrode (10).

[0095] The above-described reference punching block (162) is spaced apart from a plurality of punching blocks (132 to 135) of the first cutting portion (130) to be described later in the width direction (Y) of the coating electrode (10).

[0096] Referring to FIGS. 3 to 6, the first cutting portion (130) may include a first housing (131), a plurality of punching blocks (132 to 135), a tab width adjustment portion (230), a first tab length adjustment portion (240), and a second tab length adjustment portion (250).

[0097] A plurality of punching blocks (132 to 135) can be arranged in parallel along the longitudinal direction (X) and / or the width direction (X) of the coating electrode (10).

[0098] The above plurality of punching blocks (132 to 135) may be provided to process a first cutting surface (17) cut along the boundary between the first non-conductive portion (14) and the holding portion (13) during a punching operation of the upper mold (110) and an electrode tab (16) extending from the holding portion (13).

[0099] In this embodiment, for convenience of explanation, the plurality of punching blocks (132 to 135) are referred to as a first punching block (132), a second punching block (133), a third punching block (134), and a fourth punching block (135) according to their positions.

[0100] The first cutting portion (130) may be provided such that two punching blocks (132, 133) adjacent to each other in the longitudinal direction (X) of the coating electrode (10) can be spaced apart in the longitudinal direction (X) of the coating electrode (10) based on the tab width (B) of the electrode tab (16).

[0101] The first cutting portion (130) may be provided such that two punching blocks adjacent to each other in the width direction (Y) of the coating electrode (10) can be spaced apart in the width direction (Y) of the coating electrode (10) based on the tab length (C) of the electrode tab (16).

[0102] The first punching block (132) and the second punching block (133) can be connected in a distance-adjustable manner in the longitudinal direction (X) of the coating electrode (10) through the tap width adjustment unit (230).

[0103] The first punching block (132) and the third punching block (134) can be connected in a gap-adjustable manner in the width direction (Y) of the coating electrode (10) through the first tab length adjustment unit (240).

[0104] After the gap between the first punching block (132) and the third punching block (134) is adjusted to a preset tab length (C), the coating electrode (10) can be cut.

[0105] The second punching block (133) and the fourth punching block (135) can be connected in a space-adjustable manner in the width direction (Y) of the coating electrode (10) through the second tab length adjustment unit (250).

[0106] After the gap between the second punching block (133) and the fourth punching block (135) is adjusted to a preset tab length (C), the coating electrode (10) can be cut.

[0107] In this embodiment, the second punching block (133) to the fourth punching block (135) can be mounted on the first housing (131) so as to be positionally adjustable in at least one direction of the longitudinal direction (X) of the coating electrode (10) and / or the width direction (Y) of the coating electrode (10) with respect to the first punching block (132).

[0108] The first housing (131) may be provided to surround the first punching block (132) to the second punching block (133), the tab width adjustment unit (230), the first tab length adjustment unit (240), and the second tab length adjustment unit (250).

[0109] The first housing (131) can be mounted movably in the width direction (Y) of the coating electrode (10) through the first electric field adjustment part (210) in the internal space of the upper mold (110).

[0110] The first punching block (132) to the fourth punching block (135) can be mounted on the first housing (131) so as to be exposed to the lower portion of the first housing (131).

[0111] Referring to FIG. 7(a) and FIG. 7(b), the first punching block (132) and the second punching block (133) may be spaced apart from each other by the tab width (B) of the electrode tab (16) in the longitudinal direction (X) of the coating electrode (10) so as to process the electrode tab (16) and the first cut surface (17) on the first uncoated portion (14) of the coating electrode (10).

[0112] The first punching block (132) and the third punching block (134) may be provided to cut one side area (14a) of the electrode tab (16) processed on the first non-woven portion (14).

[0113] The first punching block (132) can cut a portion (14a) of the first non-woven portion (14) so ​​that the first cutting surface (17) and the edge of the electrode tab (16) perpendicular to the first cutting surface (17) are provided.

[0114] The third punching block (134) can cut the first non-coated portion (14) in the longitudinal direction (X) of the coated electrode (10) to process the end of the electrode tab (16).

[0115] Referring to FIG. 7(a) and FIG. 7(b), the second punching block (133) and the fourth punching block (135) can be arranged to cut the other side area (14b) of the electrode tab (16) processed on the first non-woven portion (14).

[0116] The second punching block (133) can cut the other side area (14b) of the first non-woven portion (14) so ​​that the first cutting surface (17) and the edge of the electrode tab (16) perpendicular to the first cutting surface (17) are provided.

[0117] In addition, the fourth punching block (135) can cut the first non-coated portion (14) in the longitudinal direction (X) of the coated electrode (10) to process the end of the electrode tab (16).

[0118] When the punching operation of the upper mold (110) is performed, the first punching block (132) and the second punching block (133) can leave a portion of the first unlined portion (14) in the space between the first punching block (132) and the second punching block (133) (i.e., an area corresponding to the electrode tab (16)), and cut the area (14a, 14b) where the first punching block (132) and the second punching block (133) come into contact with the first unlined portion (14).

[0119] Referring to Fig. 3, the electrode tab (16) may be a portion of the first non-conductive portion (14) provided between the first punching block (132) and the second punching block (133). The first cutting surface (17) is a portion cut by the first punching block (132) and the second punching block (133) as a boundary between the first non-conductive portion (14) and the holding portion (13).

[0120] Referring to FIGS. 6 and 7, the tap width adjustment unit (230) may be provided to adjust the first gap (D11) between the first punching block (132) and the second punching block (133) in the longitudinal direction (X) of the coating electrode (10) based on the tap width of the electrode tab (16). The tap width adjustment unit (230) may adjust the first gap (D11) between the first punching block (132) and the second punching block (133) by the tap width (B) of the electrode tab (16). The first gap (D11) may be the tap width (B).

[0121] The above tap width adjustment unit (230) can connect the first punching block (132) and the second punching block (133) which are adjacent to each other in the longitudinal direction (X) of the coating electrode (10).

[0122] The above tap width adjustment unit (230) may include various types of linear driving units that can linearly move the second punching block relative to the first punching block (132).

[0123] For example, the tap width adjustment unit (230) may include a first motor (231) and a first chain (232). The first motor (231) may be mounted on the first punching block (132). The first motor (231) may be connected to the first chain (232) and may provide driving force to the first chain (232). The first motor (231) may be a servo motor. The first motor (231) may be controlled by the controller (300).

[0124] In addition, the first chain (232) can be mounted on the second punching block (133). When the first motor (231) is driven, the first chain (232) can move the second punching block (133) in the longitudinal direction (X) of the coating electrode (10). The first chain (232) can move the second punching block (133) closer to or farther away from the first punching block (132) depending on the driving direction of the first motor (231).

[0125] As another example, the tap width adjustment unit (230) may include an LM guide (not shown). As another example, the tap width adjustment unit (230) may include a reciprocating cylinder (not shown). The tap width adjustment unit (230) may adjust the first gap (D11) between the first punching block (132) and the second punching block (133) in the same manner as the first electric length adjustment unit (210).

[0126] Referring to FIGS. 6 and 7, the first tab length adjustment unit (240) can connect the first punching block (132) and the third punching block (134) adjacent to each other in the width direction (Y) of the coating electrode (10).

[0127] The first tab length adjustment unit (240) may be provided to adjust the second gap (D12) between the first punching block (132) and the third punching block (134) in the width direction (Y) of the coating electrode (10) based on the tab length (C) of the electrode tab (16).

[0128] The above first tab length adjustment unit (240) can adjust the gap between the first punching block (132) and the third punching block (134) by the tab length (C) of the electrode tab (16).

[0129] The first tab length adjustment unit (240) may include various types of linear driving units capable of linearly moving the third punching block (134) relative to the first punching block (132).

[0130] The above first tab length adjustment unit (240) may include a second motor (241) and a second chain (242).

[0131] For example, the second motor (241) may be mounted on the first punching block (132). The second motor (241) may include a servo motor. The second chain (242) may have one end connected to the second motor (241) and the other end mounted on the third punching block. The second chain (242) may connect the first punching block (132) and the third punching block (134) in the width direction (Y) of the coating electrode (10).

[0132] When the second motor (241) is driven, the second chain (242) can move the third punching block (134) in the width direction (Y) of the coating electrode (10) with respect to the first punching block (132).

[0133] The second chain (242) can move the third punching block (134) closer to or further away from the first punching block (132) depending on the driving direction of the second motor (241).

[0134] As another example, the first tab length adjustment unit (240) may include an LM guide. As another example, the first tab length adjustment unit (240) may include a reciprocating cylinder (not shown).

[0135] The first tab length adjustment unit (240) can adjust the second gap (D12) between the first punching block (132) and the third punching block (134) in the same manner as the first overall length adjustment unit (210).

[0136] Referring to FIGS. 6 and 7, the second tab length adjustment unit (250) can connect the second punching block (133) and the fourth punching block (135) which are adjacent to each other in the width direction (Y) of the coating electrode (10).

[0137] The second tab length adjustment unit (250) may be provided to adjust the gap between the second punching block (133) and the fourth punching block (135) in the width direction (Y) of the coating electrode (10) based on the tab length (C) of the electrode tab (16). The second tab length adjustment unit (250) may adjust the second gap (D12) between the second punching block (133) and the fourth punching block (135) by the tab length (C) of the electrode tab (16).

[0138] The second tab length adjustment unit (250) may include various types of linear driving units capable of linearly moving the fourth punching block (135) relative to the second punching block (133).

[0139] The second tab length adjustment unit (250) may include a third motor (251) and a third chain (252). The third motor (251) may be mounted on the second punching block (133). The third chain (252) may have one end connected to the third motor (251) and the other end mounted on the fourth punching block (135).

[0140] When the third motor (251) is driven, the third chain (252) can move the fourth punching block (135) in the width direction (Y) of the coating electrode (10) with respect to the second punching block (133).

[0141] The third chain (252) can move the fourth punching block (135) closer to or further away from the second punching block (133) depending on the driving direction of the third motor (251).

[0142] As another example, the second tab length adjustment unit (250) may include an LM guide.

[0143] As another example, the second tap length adjustment unit (250) may include a reciprocating cylinder (not shown).

[0144] The second tab length adjustment unit (250) can adjust the second gap (D12) between the second punching block (133) and the fourth punching block (135) in the same manner as the first overall length adjustment unit (210).

[0145] In this embodiment, when the tab length (C) of the electrode plate (20, see FIG. 2) is changed, the gap between the first punching block (132) and the third punching block (134) and the gap between the second punching block (133) and the fourth punching block (135) can be adjusted through the first tab length adjustment unit (240) and the second tab length adjustment unit (250).

[0146] Referring to Fig. 4, the lower mold (120) may be provided as a set with the upper mold (110). The upper mold (110) and the lower mold (120) may be spaced apart in the height direction (Z) so that the coating electrode (10) can pass through them.

[0147] For example, the lower mold (120) may be elastically connected to the upper mold (110) to guide the punching operation of the upper mold (110). A coating electrode (10) may be mounted on the lower mold (120), and for example, the lower mold (120) may be provided to support the first and second uncoated portions (14, 15) of the coating electrode (10), respectively. For example, the lower mold (120) may be provided such that the punching blocks (132 to 135) of the upper mold (110) can be inserted therein, respectively.

[0148] FIG. 8 is a plan view of a lower mold (120) according to one embodiment of the present invention, schematically illustrating a state in which the second electric field adjustment unit, the first guide adjustment unit to the third guide adjustment unit are connected to the first guide unit and the second guide unit, and FIG. 9 is a schematic illustration of a punching operation state of a press notching device according to one embodiment of the present invention.

[0149] Referring to FIG. 8, the lower mold (120) may include a first guide portion (170), a second guide portion (180), and a second electric field adjustment portion (220).

[0150] The first guide portion (170) may include a plurality of guide blocks (172 to 175) that form guide grooves into which a plurality of punching blocks (132 to 135) of the first cutting portion (130) can be inserted. The plurality of guide blocks (172 to 175) may be spaced apart from each other, and a guide groove may be formed in the space between them.

[0151] A plurality of guide blocks (172 to 175) may be provided such that the groove spacing (length along the longitudinal direction of the coating electrode) of the first guide groove (177) can be adjusted. In the present specification, the groove spacing means the gap between two adjacent guide blocks.

[0152] The first guide portion (170) may be provided with two guide blocks (172, 173) adjacent to each other in the longitudinal direction (X) of the coating electrode (10) so that the spacing can be adjusted in the longitudinal direction (X) of the coating electrode (10) based on the tab width (B) of the electrode tab (16).

[0153] The first guide portion (170) may be provided with two guide blocks (172 and 174, 173 and 175) adjacent to each other in the width direction (Y) of the coating electrode (10) so that the spacing can be adjusted in the width direction (Y) of the coating electrode (10) based on the tab length (C) of the electrode tab (16).

[0154] The first guide portion (170) may be provided so that a portion including the first non-coated portion (14) of the coating electrode (10) can be secured and may be positioned to face the first cutting portion (130).

[0155] The above first guide portion (170) can be positioned coaxially with the first cutting portion (130) in the height direction (Z).

[0156] The above first guide portion (170) may include a first guide housing (171) and a plurality of guide blocks (172 to 175).

[0157] The first guide portion (170) may have a first guide groove (177) into which the first punching block (132) to the fourth punching block (135) of the first cutting portion (130) can be inserted. The first guide portion (170) may be provided so that the first groove spacing (D21) of the first guide groove (177) along the longitudinal direction (X) of the coating electrode (10) can be adjusted.

[0158] For example, a plurality of punching blocks (132 to 135) can all be inserted into the first guide groove (177) formed by a plurality of guide blocks (172 to 175) during a punching operation.

[0159] The plurality of guide blocks (172 to 175) may include a first guide block (172) to a fourth guide block (175). The plurality of guide blocks (172 to 175) may be spaced apart from each other along the circumferential direction of the first guide groove (177).

[0160] The first guide block (172) and the second guide block (173) can be arranged in a row in the longitudinal direction (X) of the coating electrode (10).

[0161] The first guide block (172) is intended to guide the entry of the first punching block (132). The first guide block (172) may be provided so as to be in contact with the first punching block (132) when the first punching block (132) is inserted into the first guide groove (177).

[0162] The second guide block (173) is intended to guide the entry of the second punching block (133). The second guide block (173) may be provided so as to be in contact with the second punching block (133) when the second punching block (133) is inserted into the first guide groove (177).

[0163] The third guide block (174) is intended to guide the entry of the third punching block (134). The third guide block (174) may be arranged to be in contact with the third punching block (134) when the third punching block (134) is inserted into the first guide groove (177). The third guide block (174) may be arranged adjacent to the first guide block (172) in the width direction (Y) of the coating electrode (10).

[0164] The fourth guide block (175) is intended to guide the entry of the fourth punching block (135). The fourth guide block (175) may be provided so as to be in contact with the fourth punching block (135) when the fourth punching block (135) is inserted into the first guide groove (177).

[0165] The fourth guide block (175) may be arranged adjacent to the second guide block (173) in the width direction (Y) of the coating electrode (10). The fourth guide block (175) may be arranged in a line with the third guide block (174) in the length direction (X) of the coating electrode (10).

[0166] The second guide portion (180) may be provided so that a portion including the second non-coated portion (15) of the coating electrode (10) can be secured and may be positioned to face the second cutting portion (160).

[0167] The second guide portion (180) may be positioned coaxially with the second cutting portion (160) in the height direction (Z).

[0168] In addition, the second guide portion (180) may include the second guide housing (181) and the reference guide block (182). The reference guide block (182) may be provided with a second guide groove (183) into which the reference punching block (162) of the second cutting portion (160) can be inserted.

[0169] During the punching operation of the upper mold (110), the reference punching block (162) of the second cutting portion (160) can be inserted into the second guide groove (183) of the reference guide block (182).

[0170] The second electric field adjustment unit (220) can connect the first guide unit (170) and the second guide unit (180) in the width direction (Y) of the coating electrode (10).

[0171] The second electric field adjustment unit (220) may be provided to adjust the electric field gap (D10) between the first guide unit (170) and the second guide unit (180) by moving the first guide unit (170) in the width direction (Y) of the coating electrode (10) toward or away from the second guide unit (180) based on the length of the holding unit (13) of the coating electrode (10).

[0172] The second electric field adjustment unit (220) may be linked with the first electric field adjustment unit (210) provided in the upper mold (110). In addition, the second electric field adjustment unit (220) may adjust the position of the first guide unit (170) so that the first guide unit (170) is positioned coaxially with the first cutting unit (130).

[0173] The above second electric field adjustment unit (220) can adjust the gap between the first guide unit (170) and the second guide unit (180) by the electric field gap (D10) between the first cutting unit (130) and the second cutting unit (160).

[0174] The second electric field adjustment unit (220) may include various types of linear driving units capable of moving the first guide unit (170) in a linear manner. The second electric field adjustment unit (220) may move the first guide unit (170) in the width direction (Y) of the coating electrode (10) in the same manner as the first electric field adjustment unit (210).

[0175] For example, the second electric field adjustment unit (220) may include a second electric field motor (221), a second electric field chain (222), and a second electric field rail (225).

[0176] The second electric motor (221) may be mounted on the second guide housing (181) of the second guide part (180). The second electric chain (222) may be coupled to the second electric motor (221). The second electric chain (222) may be mounted on the first guide housing (171) of the first guide part (170).

[0177] The second electric rail (225) may be mounted on the lower mold (120) in parallel with the width direction (Y) of the coating electrode (10). The first guide part (170) may be movably mounted on the second electric rail (225). The first guide part (170) is coupled to the second electric chain (212) and may be moved along the second electric rail (225) in the movement direction of the second electric chain (212).

[0178] When the second electric motor (221) is driven, the second electric chain (222) can move the first guide part (170) in the width direction (Y) of the coating electrode (10). The second electric chain (222) can move the first guide part (170) closer to or farther away from the second guide part (180) in the driving direction of the second electric motor (221).

[0179] As another example, the second electric field adjustment unit (220) may include an LM guide or a reciprocating cylinder (not shown). The second electric field adjustment unit (220) may adjust the gap between the first guide unit (170) and the second guide unit (180) in the same manner as the first electric field adjustment unit (210).

[0180] The above first guide adjustment unit (260) can connect the first guide block (172) and the second guide block (173) which are adjacent to each other in the longitudinal direction (X) of the coating electrode (10).

[0181] The first guide adjustment unit (260) may be provided to adjust the first groove spacing (D21) between the first guide block (172) and the second guide block (173) in the longitudinal direction (X) of the coating electrode (10) based on the tab width (B) of the electrode tab (16). That is, based on the spacing between the first punching block (132) and the second punching block (133), the first groove spacing (D21) between the first guide block (172) and the second guide block (173) may be adjusted so that the first punching block (132) and the second punching block (133) are inserted during a punching operation.

[0182] The above first guide adjustment unit (260) can be linked with the tap width adjustment unit (230) of the first cutting unit (130).

[0183] The above first guide adjustment unit (260) may include various types of linear driving units that can move the second guide block (173) in a straight line with respect to the first guide block (172).

[0184] For example, the first guide adjustment unit (260) may include a fourth motor (261) and a fourth chain (262). The fourth motor (261) may be mounted on the first guide block (172). The fourth chain (262) may be coupled to the fourth motor (261). The fourth chain (262) may be mounted on the second guide block (173).

[0185] When the fourth motor (261) is driven, the fourth chain (262) can move the second guide block (173) in the longitudinal direction (X) of the coating electrode (10) with respect to the first guide block (172). The fourth chain (262) can move the first guide block (172) closer to or farther away from the second guide block (173) in the driving direction of the fourth motor (261).

[0186] As another example, the first guide adjustment unit (260) may include an LM guide or a reciprocating cylinder (not shown). The first guide adjustment unit (260) may adjust the gap between the first guide block (172) and the second guide block (173) in the same manner as the tap width adjustment unit (230).

[0187] The above second guide adjustment unit (270) can connect the first guide block (172) and the third guide block (174) which are adjacent to each other in the width direction (Y) of the coating electrode (10).

[0188] The second guide adjustment unit (270) may be provided to adjust the second groove spacing (D22) between the first guide block (172) and the third guide block (174) in the width direction (Y) of the coating electrode (10) based on the tab length (C) of the electrode tab (16). That is, based on the spacing between the first punching block (132) and the third punching block (134), the second groove spacing (D22) between the first guide block (172) and the third guide block (174) may be adjusted so that the first punching block (132) and the third punching block (134) are inserted during a punching operation.

[0189] The second guide adjustment unit (270) may be provided to adjust the second groove spacing (D22) of the first guide groove (177) in the width direction (Y) of the coating electrode (10).

[0190] The second guide adjustment unit (270) is linked with the first tab length adjustment unit (240) to adjust the second groove spacing (D22) between the first guide block (172) and the third guide block (174).

[0191] The second guide adjustment unit (270) may include various types of linear driving units capable of linearly moving the third guide block (174) relative to the first guide block (172).

[0192] For example, the second guide adjustment unit (270) may include a fifth motor (271) and a fifth chain (272).

[0193] The fifth motor (271) may be mounted on the first guide block (172). The fifth chain (272) may be coupled to the fifth motor (271). The fifth chain (272) may be mounted on the third guide block (174).

[0194] When the fifth motor (271) is driven, the fifth chain (272) can move the third guide block (174) in the width direction (Y) of the coating electrode (10) based on the first guide block (172).

[0195] As another example, the second guide adjustment unit (270) may include an LM guide (not shown) or a reciprocating cylinder (not shown).

[0196] The third guide adjustment unit (280) can connect the second guide block (173) and the fourth guide block (175) which are adjacent to each other in the width direction (Y) of the coating electrode (10).

[0197] The third guide adjustment unit (280), like the second guide adjustment unit (270), may be provided to adjust the second groove spacing (D22) between the second guide blocks (173) in the width direction (Y) of the coating electrode (10) based on the tab length (C) of the electrode tab (16).

[0198] The third guide adjustment unit (280) can adjust the second groove spacing (D22) of the first guide groove (177) in the width direction (Y) of the coating electrode (10).

[0199] The third guide adjustment unit (280) is linked with the second tab length adjustment unit (250) to adjust the second groove spacing (D22) between the second guide block (173) and the fourth guide block (175).

[0200] The third guide adjustment unit (280) may include various types of linear driving units that can move the fourth guide block (175) in a straight line with respect to the second guide block (173).

[0201] For example, the third guide adjustment unit (280) may include a sixth motor (281) and a sixth chain (282).

[0202] The sixth motor (281) may be mounted on the second guide block (173). One end of the sixth chain (282) may be connected to the sixth motor (281), and the other end may be mounted on the fourth guide block (175).

[0203] When the sixth motor (281) is driven, the sixth chain (282) can move the fourth guide block (175) in the width direction (Y) of the coating electrode (10) with respect to the second guide block (173).

[0204] The sixth chain (282) can move the second guide block (173) closer to or further away from the fourth guide block (175) in the driving direction of the sixth motor (281).

[0205] As another example, the third guide adjustment unit (280) may include an LM guide (not shown) or a reciprocating cylinder (not shown).

[0206] Below, the controller (300) will be described.

[0207] The controller (300) can individually control the first electric motor (211), the second electric motor (221), the first motor (231) to the sixth motor (281). The controller (300) can control each motor according to the electric length, tap width (B), and tap length (C) according to the specifications of the electrode plate (20, see FIG. 2) through PLC (Programmable Logic Controller) control.

[0208] For example, the controller (300) can control the operation of the first electric motor (211) and the second electric motor (221) based on the length (A) of the holding portion (13) of the coating electrode (10).

[0209] Additionally, the controller (300) can control the operation of the first motor (231) and the fourth motor (261) based on the tap width (B) of the coating electrode (10).

[0210] Additionally, the controller (300) can control the operation of the second motor (241) and the third motor (251) based on the tap length (C) of the coating electrode (10).

[0211] The spacing between the first punching block (132) and the third punching block (134) and the spacing between the second punching block (133) and the fourth punching block (135) can be adjusted to be the same.

[0212] In addition, the controller (300) can control the operation of the fifth motor (271) in conjunction with the second motor (241), and the controller (300) can control the operation of the sixth motor (281) in conjunction with the third motor (251).

[0213] The above controller (300) can operate the upper mold (110) to punch when the driving of the coating electrode (10) is stopped.

[0214] Referring to Fig. 9, when the upper mold (110) is punched, the first cutting portion (130) moves (descended) toward the first guide portion (170) of the lower mold (120). Then, the first punching block (132) to the fourth punching block (135) of the first cutting portion (130) are each inserted into the first guide groove (177) of the first guide portion (170), thereby cutting the remaining portion of the first non-cut portion (14) except for the electrode tab (16), thereby processing the electrode tab (16).

[0215] Referring to Fig. 9, when the upper mold (110) is punched, the second cutting portion (160) moves in a direction closer to the second guide portion (180). The reference punching block (162) of the second cutting portion (160) can cut the second uncoated portion (15) of the coating electrode (10) while being inserted into the second guide groove (183) of the second guide portion (180).

[0216] The preferred embodiments of the present invention described above are disclosed for the purpose of illustration, and those skilled in the art having ordinary knowledge of the present invention will be able to make various modifications, changes, and additions within the spirit and scope of the present invention, and such modifications, changes, and additions should be considered to fall within the scope of the following claims.

[0217] According to a press notching device related to one embodiment of the present invention, it is possible to adjust the dimensions of a processing area within a mold according to the specifications of the electrode plate (e.g., the total length of the electrode plate, the tab width, and the tab length), so that electrode plates of various specifications can be produced.

Claims

1. An upper mold including a first cutting portion provided to process an electrode tab on a first uncoated portion of a coated electrode, and a second cutting portion spaced apart from the first cutting portion at a predetermined interval along the width direction of the coated electrode to process a second uncoated portion of the coated electrode; and A press notching device comprising a first electric field adjusting unit configured to connect the first cutting portion and the second cutting portion and move at least one of the first cutting portion and the second cutting portion along the width direction of the coating electrode to adjust the gap.

2. In paragraph 1, A press notching device, wherein the first electric field control unit includes a linear driving unit for moving at least one of the first cutting unit and the second cutting unit in a straight line along the width direction of the coating electrode.

3. In paragraph 1, The first cutting portion includes a first punching block and a second punching block arranged in parallel along the length direction of the coating electrode, The tab width of the electrode tab is determined by the gap between the first punching block and the second punching block, A press notching device comprising a tap width adjusting portion configured to connect the first punching block and the second punching block and adjust a gap between the first punching block and the second punching block in the longitudinal direction of the coating electrode.

4. In paragraph 3, A press notching device wherein the tap width adjustment unit includes a linear driving unit capable of linearly moving the second punching block relative to the first punching block.

5. In paragraph 1, The plurality of punching blocks include a first punching block and a third punching block arranged in parallel along the width direction of the coating electrode, The tab length of the electrode tab is determined by the gap between the first and third punching blocks of the singe. A press notching device comprising a first tab length adjusting portion configured to connect the first punching block and the third punching block and adjust a gap between the first punching block and the third punching block in the width direction of the coating electrode.

6. In paragraph 5, A press notching device wherein the first tab length adjusting unit includes a linear driving unit capable of linearly moving the third punching block relative to the first punching block.

7. In paragraph 5, The plurality of punching blocks include a second punching block and a fourth punching block arranged in parallel along the width direction of the coating electrode, The second punching block and the first punching block are arranged in parallel along the longitudinal direction of the coating electrode, and the fourth punching block and the third punching block are arranged in parallel along the longitudinal direction of the coating electrode. The tab length of the electrode tab is determined by the gap between the second punching block and the fourth punching block. A press notching device comprising a second tab length adjusting portion configured to connect the second punching block and the fourth punching block and adjust a gap between the second punching block and the fourth punching block in the width direction of the coating electrode.

8. In paragraph 1, A lower mold is provided to guide the punching operation of the upper mold, The lower mold comprises a first guide portion, on which a portion including the first uncoated portion of the coating electrode is seated and positioned facing the first cut portion; A second guide portion, in which a portion including the second uncoated portion of the above-mentioned coating electrode is fixed and positioned facing the second cut portion; and A press notching device comprising a second electric length adjusting portion configured to connect the first guide portion and the second guide portion in the width direction of the coating electrode and adjust the gap between the first guide portion and the second guide portion according to the gap between the first cutting portion and the second cutting portion.

9. In paragraph 8, A press notching device wherein the second electric field control unit includes a linear driving unit for moving at least one of the first guide unit and the second guide unit in a straight line along the width direction of the coating electrode.

10. In paragraph 8, A press notching device provided so that the second electric field adjustment unit adjusts the positions of the first guide unit and the second guide unit so that the first guide unit is positioned coaxially with the first cutting unit and the second guide unit is positioned coaxially with the second cutting unit.

11. In paragraph 8, The first guide section includes a plurality of guide blocks spaced apart from each other so that a plurality of punching blocks of the first cutting section are inserted during a punching operation. The above plurality of guide blocks are a press notching device in which the spacing between adjacent guide blocks is adjustable.

12. In paragraph 11, The plurality of guide blocks include a first guide block and a second guide block arranged sequentially along the length direction of the coating electrode, A press notching device, wherein the first guide portion connects the first guide block and the second guide block, and includes a first guide adjusting portion configured to adjust the gap between the first guide block and the second guide block in the longitudinal direction of the coating electrode.

13. In paragraph 12, A press notching device, wherein the first guide adjusting unit includes a linear driving unit for moving at least one of the first guide block and the second guide block in a straight line along the longitudinal direction of the coating electrode.

14. In paragraph 11, The first guide section is a press notching device in which two guide blocks are arranged adjacent to each other in the width direction of the coating electrode and are spaced apart along the width direction of the coating electrode.

15. In paragraph 14, The plurality of guide blocks include a first guide block, three guide blocks arranged side by side in the width direction of the first guide block and the coating electrode, a second guide block arranged side by side in the length direction of the first guide block and the coating electrode, and a fourth guide block arranged side by side in the width direction of the second guide block and the coating electrode. A press notching device comprising: a first guide portion, a second guide adjustment portion configured to connect the first guide block and the third guide block and adjust the gap between the first guide block and the third guide block in the width direction of the coating electrode; and a third guide adjustment portion configured to connect the second guide block and the fourth guide block and adjust the gap between the second guide block and the second guide block in the width direction of the coating electrode.

Images