Grooving apparatus for electrode substrates of rechargeable batteries

Abstract

Disclosed is a slitting apparatus for an electrode substrate of a rechargeable battery. The slitting apparatus includes a lower plate assembly provided with a die, an upper plate assembly provided with a punch facing the die, an electrode substrate having a width in a second direction crossing a first direction being interposed between the upper plate assembly and the lower plate assembly facing the lower plate assembly and passing through in the first direction, and a pusher provided at a first side of the punch and the die in the second direction and configured to slit the electrode substrate into electrodes and separate generated waste by pressing with a blade, wherein the blade is provided to connect an outside and an inside of the die in the second direction, and wherein at least the first side of the punch and the die is provided with a recess on which the blade can be placed.

Description

Technical Field

[0001] This disclosure relates to a grooving apparatus for an electrode substrate of a rechargeable battery. More specifically, this disclosure relates to a grooving apparatus for an electrode substrate of a rechargeable battery that can remove waste generated during electrode manufacturing by grooving a continuously supplied electrode substrate. Background Technology

[0002] Unlike primary batteries, rechargeable batteries are batteries that repeatedly perform charging and discharging. Small-capacity secondary batteries are used in small portable electronic devices, such as mobile phones, laptops, and cameras. High-capacity and high-density secondary batteries are used for electrical or energy storage, which is used to power motors in hybrid and electric vehicles.

[0003] The rechargeable battery includes an electrode assembly for charging and discharging with current, a housing or bag for containing the electrode assembly and an electrolyte solution, and electrode terminals connected to the electrode assembly and extending to the outside of the housing or bag. The electrode assembly can be formed as a core type by winding electrodes and a separator, or as a stack type by stacking electrodes and a separator.

[0004] Electrodes used in stacked rechargeable batteries are manufactured by slotting an electrode substrate with coated and uncoated portions. The slotting equipment used in the electrode substrate slotting process typically includes a lower die assembly with a mold and an upper die assembly with a punch. The slotting equipment manufactures electrodes by slotting the electrode substrate, which is inserted between the lower and upper die assemblies, into a desired shape through the relative rising and / or falling operation of the mold and the punch.

[0005] At this point, scrap is generated on the underside of the punch and the inside of the die. To remove the scrap, methods such as air removal, pin removal, using a tension spring pusher, and using a cam pusher are employed.

[0006] In the tension spring pusher method, as the die rises, the pusher moves forward via the tension spring, and as the pusher moves forward, the blade descends to push the scrap to the underside of the die. In this method, the stiffness of the tension spring deteriorates due to repetitive operation, potentially causing the component to misalign and leading to accidents.

[0007] In the cam pusher method, a drive retainer connected to the cam moves forward and backward by the rising or falling of the die, and when the pusher moves forward, the blade descends to push the scrap to the underside of the die. This method can prevent erroneous removal based on the die's drive, but the cam and pusher can be damaged when they are constrained by foreign objects. Summary of the Invention

[0008] This disclosure attempts to provide a grooving apparatus for an electrode substrate of a rechargeable battery, which can smoothly discharge waste generated during electrode manufacturing by grooving the supplied electrode substrate.

[0009] A grooving apparatus for an electrode substrate of a rechargeable battery includes: a lower plate assembly having a mold; an upper plate assembly having a punch facing the mold, the electrode substrate facing the lower plate assembly and passing through in a first direction and having a width in a second direction intersecting the first direction, the electrode substrate being inserted between the upper plate assembly and the lower plate assembly; and a pusher disposed on a first side of the punch and the mold in the second direction, and configured to groove the electrode substrate into an electrode, and to separate the generated waste by pressing with a blade, wherein the blade is configured to connect the outside and inside of the mold in the second direction, and wherein at least a first side of the punch and the mold has a recess on which the blade can be placed.

[0010] The punch may have a receiving recess on its lower surface, which is configured to receive the first end of the blade.

[0011] The first end of the blade can form three branch structures corresponding to the uncoated portion on the outside or opposite side of the electrode's terminal block.

[0012] The actuator may include an upper block and a lower block. The upper block is configured to mount the blade at the operating center via a first hinge and resiliently support the second end of the blade positioned on a second side of the operating center in a downward direction, so that the first end of the blade positioned on a first side of the operating center operates vertically. The lower block is disposed below the upper block and is configured to be mounted at the operating center via a second hinge to engage with or release from a hook at the first end, and resiliently support the hook from the outside to the inside in a second direction.

[0013] The upper block may include a first height portion and a second height portion, the first height portion being formed at a low height on the inner side along the second direction, and the second height portion being formed at a higher height on the outer side along the second direction, and the upper block is configured to mount the operating center of the blade positioned in a first through hole via a first hinge, the first through hole vertically penetrating the boundary between the first height portion and the second height portion.

[0014] The second height section may have a first elastic member provided in the vertical direction, the second end of the blade is provided on the lower side of the second height section to receive the elastic force of the first elastic member, and the first end of the blade is provided on the lower side of the first height section to receive the downward force of the punch.

[0015] The lower block can be configured to mount the lower end of the hook in a second through hole, which is located on the lower side of the second height portion and the lower side of the boundary, and vertically penetrates the lower block.

[0016] The blade may be provided with a hook pin in the first height section, and the lower block may be provided with a second elastic member in the second direction. When the blade descends, the hook can receive the elastic force of the second elastic member to engage with the hook pin, and when the blade rises, the hook disengages from the hook pin.

[0017] The hook pin can be formed as a curved surface centered in a first direction, and the hook can protrude toward the curved surface and have an upper inclined surface and a lower inclined surface facing the hook pin.

[0018] The blade can have a third through hole above the second through hole, so that the hook can be inserted in the vertical direction, and the hook pin can be installed in the third through hole in the first direction.

[0019] The blade may be provided with a connecting portion configured to connect the first end and the third through hole, and the connecting portion may be located in a recess.

[0020] According to an embodiment, a pusher is provided, which is configured to separate waste material by pressing with a blade. The blade is configured to connect the outside and inside of a mold, and the mold or punch is provided with a recess on which the blade can be placed. Therefore, when manufacturing electrodes by slotting a supplied electrode substrate, the waste material generated can be smoothly discharged by the pusher. Attached Figure Description

[0021] Figure 1 This is a top plan view of a grooving apparatus for an electrode substrate of a rechargeable battery according to an embodiment.

[0022] Figure 2 It is based on Figure 1 Front view of line II-II.

[0023] Figure 3 This shows the application to Figure 1 A perspective view of the mold, punch, and pusher of a grooving device for electrode substrates of rechargeable batteries.

[0024] Figure 4 It is applied to Figure 1 and Figure 3 A perspective view of the actuator.

[0025] Figure 5 yes Figure 4 An exploded perspective view of the actuator shown.

[0026] Figure 6 It is shown Figure 4 The blade of the pusher is set Figure 3 A top-view plan view of the state of the mold and waste.

[0027] Figure 7 It is based on Figure 6 The sectional view along line VII-VII shows the operating states of the punch and upper block before they descend to slot, during the descent, during the ascent after slotting, and after the ascent is complete.

[0028] Figure 8 The diagram shows the punch and upper block from Figure 7 The state further decreases to the operating state where the hook pin has already caused the hook to rotate around the second hinge when the slot is opened.

[0029] Figure 9 It shows when the punch and the upper block are from Figure 8 The state of the punch further decreases and the punch further decreases compared to the previous block during and after grooving. Detailed Implementation

[0030] The invention will be described more fully below with reference to the accompanying drawings, in which embodiments of the invention are illustrated. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the scope of the invention. The drawings and description are to be considered illustrative in nature and not restrictive. Throughout the specification, the same reference numerals denote the same elements.

[0031] Figure 1 This is a top plan view of a grooving apparatus for an electrode substrate of a rechargeable battery according to an embodiment. Figure 2 It is based on Figure 1 Front view of line II-II. (Refer to...) Figure 1 and Figure 2 The grooving apparatus of this embodiment includes a lower plate mold assembly 100 (hereinafter referred to as the lower plate assembly) on which a mold 10 is provided, an upper plate mold assembly 200 (hereinafter referred to as the upper plate assembly) on which a punch 20 is provided, and a pusher 400. The upper plate assembly 200 and the lower plate assembly 100 are interconnected to each other by a lifting member 300, which guides the movement of the upper plate assembly 200 and the lower plate assembly 100 in opposite directions. In this example, the pusher 400 may be mounted on the lower plate assembly 100.

[0032] The upper plate assembly 200 faces the lower plate assembly 100 in a third direction (z-axis direction) intersecting the xy plane, and an electrode substrate S with a width in a second direction (y-axis direction) intersecting the first direction (x-axis direction) is inserted therebetween. The punch 20 faces the mold 10, so that the electrode substrate S in the xy plane can be slotted into an electrode E.

[0033] The electrode substrate S is unrolled from a roll state to be continuously supplied between the upper plate assembly 200 and the lower plate assembly 100, and includes a coated portion CP disposed in the middle of the y-axis direction along the x-axis direction and an uncoated portion UCP disposed at both ends of the y-axis direction along the x-axis direction.

[0034] Since the slotted electrode E has a different structure at both ends in the width direction (y-axis direction) from the electrode substrate S, the mold 10 provided in the lower plate assembly 100 includes a first mold 110 and a second mold 210 for slotting in different shapes, and the punch 20 provided on the upper plate assembly 200 corresponding to the lower plate assembly 100 includes a first punch 120 and a second punch 220.

[0035] A first mold 110 and a first punch 120 are disposed on a first side of the electrode substrate S in a second direction (y-axis direction) to slot the first side of the electrode substrate S, and a second mold 210 and a second punch 220 are disposed on a second side of the electrode substrate S in the second direction (y-axis direction) to slot the second side of the electrode substrate S. In an embodiment, the second mold 210 and the second punch 220 are formed to slot the uncoated portion of UCP into the terminal piece T portion of the electrode E, and the first mold 110 and the first punch 120 are formed to slot the opposite portion of the electrode substrate S. Hereinafter, for convenience, the second mold 210 and the second punch 220 will be described as examples.

[0036] The pusher 400 is disposed on the first side of the die 10 and the punch 20 in the second direction (y-axis direction) and is configured to press the waste material (SCR) generated by slotting the electrode substrate S by the blade 410. Figure 3 and Figure 6 The blade 410 is separated from the electrode substrate S. The blade 410 is configured to connect the exterior and interior of the mold 10 in a second direction (y-axis direction). For this purpose, in an embodiment, the mold 10 and the punch 20 each have recesses 11 and 12 on which the blade 410 can be placed. Although not shown separately, the recesses may be formed only in the mold or only in the punch, depending on the shape of the blade 410.

[0037] The punch 20 has a receiving recess 21 on its lower surface, which receives the first end 411 of the blade 410. When the punch 20 slots the electrode substrate S into the electrode E while engaging with the mold 10, the receiving recess 21 allows the first end 411 of the blade 410, located between the punch 20 and the mold 10, to press the scrap SCR to separate it from the electrode substrate S, the electrode E, the mold 10, and the punch 20 without interfering with the slotting process.

[0038] The first end 411 of the blade 410 can form three branch structures corresponding to the uncoated portion UCP on the outside or opposite side of the terminal block T of the electrode E. The three branch structures provide separation force to the waste SCR along the second direction (y-axis direction) at both ends of the slot of the electrode E, thereby preventing separation errors of the waste SCR.

[0039] Figure 3 This shows the application to Figure 1 A perspective view of the mold, punch, and pusher of a grooving device for electrode substrates of rechargeable batteries. Figure 4 It is applied to Figure 1 and Figure 3 A perspective view of the actuator.

[0040] Figure 5 yes Figure 4 An exploded perspective view of the actuator shown. Figure 6 It is shown Figure 4 The blade of the pusher is set Figure 3 A top-view plan showing the state of the mold and scrap. (Refer to...) Figures 3 to 6 The actuator 400 includes an upper block 430 and a lower block 440.

[0041] The upper block 430 mounts the blade 410 at the operating center via the first hinge H1 and is configured to elastically support the second end 412 of the blade 410 located on the second side of the operating center in the downward direction, so that the first end 411 of the blade 410 located on the first side of the operating center can be operated in the vertical direction.

[0042] The lower block 440 is disposed on the lower side of the upper block 430 and is configured to be mounted at the lower end via a second hinge H2 at the operating center of the blade 410 and engaged with or released from the first end 411 hook 450, and elastically support the hook 450 from the outside to the inside in a second direction (y-axis direction).

[0043] More specifically, the upper block 430 includes a first height portion 431 and a second height portion 432. The first height portion 431 is formed at a low height on the inner side along the second direction (y-axis direction). The second height portion 432 is formed at a height higher than the first height portion 431 on the outer side along the second direction (y-axis direction).

[0044] The upper block 430 has a first through hole 433 extending vertically through the boundary between the first height portion 431 and the second height portion 432, and the operating center of the blade 410, positioned at the first through hole 433, is mounted via a first hinge H1. Therefore, on the lower side of the upper block 430, with the first hinge H1 as the operating center, the blade 410 forms a first end 411 on the inner side along the second direction (y-axis direction) and a second end 412 on the outer side.

[0045] Figure 7 It is based on Figure 6 The diagram shows a cross-sectional view along line VII-VII, illustrating the operational states of the punch and upper block before descent to slot, during descent, during ascent after slotting, and after ascent completion. (Refer to...) Figures 3 to 7 The second height portion 432 includes a first elastic member 434 in the vertical direction.

[0046] As an example, the first elastic member 434 is embedded in the second height portion 432 where the first pushing member 435 is inserted and is supported by a cover 436. The cover 436 is coupled to a protrusion 437 formed at the upper end of the second height portion 432 via a first side and is fixed to the second height portion 432 via a bolt 438 via a second side, thereby facilitating the insertion of the first elastic member 434 and the first pushing member 435.

[0047] The second end 412 of the blade 410 is located below the second height portion 432 and receives the downward elastic force from the first elastic member 434 and the first pushing member 435. Therefore, the first end 411 of the blade 410 is located below the first height portion 431 and receives the downward force from the punch 20. The downward force of the punch 20 overcomes the elastic force of the first elastic member 434 and, with the first hinge H1 as the operating center, causes the first end 411 of the blade 410 to descend, thus pressing down the slotted waste SCR and separating it from the electrode substrate S and the electrode E.

[0048] The lower block 440 is located below the second height portion 432 and below the boundary, and has a second through hole 443 penetrating in the vertical direction. The lower end of the hook 450 is positioned in the second through hole 443 by means of the second hinge H2. Therefore, the hook 450 operates with the second hinge H2 as its operating center.

[0049] The blade 410 is provided with a hook pin H3 in the first height portion 431. The lower block 440 allows the second elastic member 444 to be inserted in the second direction (y-axis direction). As an example, the second elastic member 444 is inserted into the lower block 440 where the second push member 445 is inserted, and is fixed by a plate 448 and a bolt 438.

[0050] When the blade 410 descends, the hook 450 receives the elastic force of the second elastic member 444 and the second pushing member 445 to engage with the hook pin H3. When the blade 410 rises, the hook 450, which is engaged with the hook pin H3 while receiving the elastic force, is released by the rise of the hook pin H3.

[0051] As an example, the hook pin H3 is formed as a curved surface centered in a first direction (x-axis direction). The hook 450 protrudes toward the curved surface of the hook pin H3 and has an upper inclined surface 452 and a lower inclined surface 451 facing the hook pin H3.

[0052] When the blade 410 descends, the upper inclined surface 452 eases the engagement with the hook pin H3 to reduce engagement impact, and when the blade 410 rises, the lower inclined surface 451 eases the disengagement from the hook pin H3 to reduce release impact.

[0053] The blade 410 is provided with a third through hole 413 above the second through hole 443, allowing the hook 450 to be inserted in the vertical direction (z-axis direction). The hook pin H3 is mounted by extending from the third through hole 413 along the first direction (x-axis direction). The blade 410 is provided with a connecting portion 414 connecting the first end 411 and the third through hole 413, and the connecting portion 414 is positioned in the recesses 11 and 12 (see reference). Figure 6 and Figure 7 ).

[0054] Figure 8 It shows when the punch and the upper block are from Figure 7 The state further deteriorates to the operating state where, during slotting, the hook pin has already caused the hook to rotate around the second hinge. (Refer to...) Figure 7 and Figure 8 As the punch 20 and the die 10 rise and fall in opposite directions, the grooving device grooves the electrode substrate S into an electrode E.

[0055] Figure 7 It is based on Figure 6 The sectional view along line VII-VII shows the operating states of the punch and upper block before they descend to slot, during the descent, during the ascent after slotting, and after the ascent is complete. Figure 7 The image shows the state just before the descent to slot, in which the punch 20 and the upper block 430 are positioned at their highest level.

[0056] Just before the punch 20 and upper block 430 descend to slot, in the upper block 430 of the pusher 400, the second end 412 of the blade 410 receives a downward elastic support force through the first elastic member 434 and the first push member 435. Therefore, the first end 411 rotates about the first hinge H1, which serves as the operating center, to be received in the receiving recess 21 of the punch 20. At this time, the connecting portion 414 can be positioned in the recess 12.

[0057] In the lower block 440 of the actuator 400, the hook 450 receives an inward elastic support force in the second direction (y-axis direction) via the second elastic member 444 and the second pushing member 445. Therefore, the hook 450 rotates about the second hinge H2 and maintains its maximum inward rotation in the second direction (y-axis direction). Figure 7 (The state in the middle).

[0058] Reference Figure 7 and Figure 8 Punch head 20 and upper block 430 from Figure 7 The state also dropped to Figure 8 The state. In such a state. Figure 7 After the ground descends as shown, the punch 20 and the upper block 430 descend further to... Figure 8 The state is such that grooving is performed. Therefore, the punch 20 and the upper block 430 are further approached by the die 10 and the lower block 440, and the blade 410 is further approached by the electrode substrate S and the hook 450.

[0059] At this time, the hook pin H3 pushes the hook 450 to rotate around the second hinge H2. As a result, the hook 450 rotates around the second hinge H2 and maintains its maximum outward rotation in the second direction (y-axis direction). Figure 8 (In the state of being). Hook 450 is elastically supported by the elastic force of the second elastic member 444.

[0060] Figure 9 It shows when the punch and the upper block are from Figure 8 The state of the punch further decreases and the punch further decreases compared to the previous block during and after grooving.

[0061] Reference Figure 8 and Figure 9 Punch head 20 and upper block 430 from Figure 8 The state decreased to different levels Figure 9 The state is such that the descent of the punch 20 is greater than the descent of the upper block 430. Therefore, from the state where the upper block 430 is in contact with the lower block 440, the punch 20 can descend further into the mold 10.

[0062] As the punch 20 descends, the first end 411 of the blade 410 is pressed down in the upper block 430, allowing the scrap SCR to separate from the electrode E that has been slotted from the electrode substrate S. At this time, the connecting portion 414 is positioned in the recesses 11 and 12, and the second end 412 of the blade 410 moves upward, overcoming the downward elastic force of the first elastic member 434 and the first pushing member 435.

[0063] In the lower block 440 of the pusher 400, the hook 450 rotates about the second hinge H2 via the second elastic member 444 and the second push member 445, thereby rotating inward in the second direction (y-axis direction) to be engaged by the upper surface of the hook pin H3.

[0064] Conversely, refer to Figure 9 and Figure 8 Punch head 20 and upper block 430 from Figure 9 state to Figure 8 The states rise differently. That is, the rise of punch 20 is greater than the rise of upper block 430. Therefore, from the state where upper block 430 and lower block 440 are separated, punch 20 rises further out of mold 10.

[0065] At this time, in the upper block 430, the second end 412 of the blade 410 is pressed by the rising of the punch 20, so the first end 411 rises. At this time, the connecting portion 414 is positioned on the recess 12, and the second end 412 of the blade 410 is elastically supported by the first elastic member 434 and the first pushing member 435.

[0066] In the lower block 440 of the pusher 400, the hook 450 is elastically supported by the second elastic member 444 and the second pushing member 445, and is simultaneously pushed outward by the hook pin H3 along the second direction (y-axis direction) (see reference). Figure 8 ).

[0067] Additionally, refer to Figure 8 and Figure 7 Punch head 20 and upper block 430 from Figure 8 The state also rose to Figure 7 The punch 20 and upper block 430 are thus spaced apart from the die 10 and lower block 440, and the blade 410 is spaced apart from the electrode substrate S and hook 450. At this time, the hook 450, which receives elastic force through the second elastic member 444 and the second pushing member 445, rotates backward about the second hinge H2 while disengaging from the hook pin H3. This completes a grooving process.

[0068] The grooving device in this embodiment can repeatedly perform the process from Figure 7 state to Figure 8 Operations on state, from Figure 8 state to Figure 9 The operation of the state and their reversal operation, thereby manufacturing the electrode E by slotting the continuously supplied electrode substrate S, while smoothly discharging the generated waste SCR.

[0069] While this disclosure has been described in conjunction with embodiments now considered practical, it will be understood that the disclosure is not limited to the disclosed embodiments, but rather is intended to cover various modifications and equivalent arrangements included within the scope of the appended claims.

[0070] <Description of the label>

[0071] 10: Mold 11, 12: concave part

[0072] 21: Recessed section; 20: Punch.

[0073] 100: Lower plate assembly; 110: First mold

[0074] 120: First punch; 200: Upper plate assembly

[0075] 210: Second mold 220: Second punch

[0076] 400: Pusher; 410: Blade

[0077] 411: First end 412: Second end

[0078] 414: Connecting part; 430: Upper block

[0079] 431: First height section; 432: Second height section

[0080] 433: First through hole; 434: First elastic member

[0081] 435: First pushing component; 436: Cover

[0082] 437: Protrusion 438: Bolt

[0083] 440: Lower block 443: Second through hole

[0084] 444: Second elastic member; 445: Second pushing member

[0085] 448: Board 450: Hook

[0086] 451: Lower inclined surface; 452: Upper inclined surface

[0087] CP: Coated part; E: Electrode

[0088] H1: First hinge; H2: Second hinge

[0089] H3: Hook pin; S: Electrode substrate

[0090] SCR: Scrap Material T: Connecting Piece

[0091] UCP: Uncoated portion

Claims

1. A grooving apparatus for an electrode substrate of a rechargeable battery, the grooving apparatus comprising: The lower plate assembly is equipped with a mold; The upper plate assembly is provided with a punch facing the mold, and the lower plate assembly is provided with an electrode substrate that passes through a first direction and has a width in a second direction intersecting the first direction, which is inserted between the upper plate assembly and the lower plate assembly. as well as A pusher, disposed on a first side of the punch and the die in the second direction, is configured to slot the electrode substrate into an electrode and includes: a blade, which separates the blade by pressing off waste material; an upper block, configured to mount the blade at an operating center via a first hinge and resiliently support a second end of the blade positioned at a second side of the operating center in a downward direction, such that the first end of the blade positioned at the first side of the operating center operates vertically; and a lower block, disposed on the lower side of the upper block and configured to be mounted at the operating center via a second hinge to engage with or release from the first end of the first end of the blade, and resiliently support the hook from the outside to the inside in the second direction. The blade is configured to connect the outer and inner parts of the mold in the second direction. The punch and the die have recesses on at least the first side, and the blade is placed on the recess. The upper block includes a first height portion and a second height portion. The first height portion is formed at a lower height on the inner side along the second direction, and the second height portion is formed at a higher height than the first height portion on the outer side along the second direction. The blade is provided with a hook pin in the first height portion; the lower block is provided with a second elastic member in the second direction; and when the blade descends, the hook receives the elastic force of the second elastic member to engage with the hook pin, and when the blade rises, the hook disengages from the hook pin.

2. The grooving equipment according to claim 1, wherein, The punch has a receiving recess on its lower surface, the receiving recess being configured to receive the first end of the blade.

3. The grooving equipment according to claim 2, wherein, The first end of the blade forms three branch structures corresponding to the uncoated portion at the outside or opposite side of the electrode's terminal block.

4. The grooving equipment according to claim 1, wherein: The upper block is configured to mount the operating center of the blade, positioned in a first through hole, via the first hinge, the first through hole vertically penetrating the boundary between the first height portion and the second height portion.

5. The grooving equipment according to claim 4, wherein: The second height portion is provided with a first elastic member in the vertical direction; The second end of the blade is disposed below the second height portion to receive the elastic force of the first elastic member; and The first end of the blade is positioned below the first height portion to receive the downward force of the punch.

6. The grooving equipment according to claim 4, wherein, The lower block is configured to mount the lower end of the hook in a second through hole, the second through hole being located on the lower side of the second height portion and the lower side of the boundary, and vertically penetrating the lower block.

7. The grooving equipment according to claim 4, wherein: The hook pin is formed as a curved surface centered on the first direction; and The hook protrudes toward the curved surface and has an upper inclined surface and a lower inclined surface facing the hook pin.

8. The grooving equipment according to claim 4, wherein: The blade has a third through hole above the second through hole, allowing the hook to be inserted vertically. The second through hole is located below the second height portion and below the boundary, and vertically penetrates the lower block. The hook pin is installed in the third through hole in the first direction.

9. The grooving equipment according to claim 8, wherein: The blade is provided with a connecting portion, which is configured to connect the first end and the third through hole; and The connecting portion is located in the recess.

Images