CN114976259A

CN114976259A - Riveting and assembling mechanism for lithium battery cover

Info

Publication number: CN114976259A
Application number: CN202210559448.1A
Authority: CN
Inventors: 梅金磊; 段保印; 范红鹏
Original assignee: Suzhou Appreciate Intelligent Technology Co Ltd
Current assignee: Suzhou Appreciate Intelligent Technology Co Ltd
Priority date: 2022-05-19
Filing date: 2022-05-19
Publication date: 2022-08-30

Abstract

The utility model provides a lithium battery cover riveting equipment mechanism, which comprises a frame, be provided with the die holder in the frame, the upper die base, a drive mechanism and fender material subassembly, the upper die base is located the top of die holder, be provided with first support column on the die holder, be provided with the first compression leg corresponding with first support column on the upper die base, it can stop the location to passing the tool of carrying along between die holder and the upper die base to keep off the material subassembly, a drive mechanism can drive the die holder up-and-down motion so that die holder and upper die base carry out compound die and die sinking, along with die holder and upper die base compound die, first support column and first compression leg can carry out the riveting to the product of placing on the tool. The automatic production line has the advantages of convenient and quick operation, low labor intensity, labor saving, high precision, high safety and reliability, improvement on production efficiency and capacity, convenience for automatic production line of products, reduction in cost and the like.

Description

Riveting and assembling mechanism for lithium battery cover

Technical Field

The utility model relates to a lithium battery cover processing equipment especially relates to a lithium battery cover riveting equipment mechanism.

Background

At present, the application of lithium cell is more and more extensive, and lithium cell lid needs to carry out the riveting equipment to some spare parts on the lithium cell lid in process of production, for example with riveting connection such as positive post, negative pole post on the lithium cell lid. However, the traditional mode is manual single-station single-sheet riveting, the angle of manual material taking and placing is not well controlled, the operation is inconvenient, the occupied manpower is large, the efficiency is low, the precision is low, the safety and the reliability are low, the productivity is low, the cost is high, and the like.

Disclosure of Invention

The utility model aims at providing a lithium cell lid riveting equipment mechanism can solve at least one among the above-mentioned technical problem, and this disclosed technical scheme is as follows:

the utility model provides a lithium battery cover riveting equipment mechanism, which comprises a frame, be provided with the die holder in the frame, the upper die base, a drive mechanism and fender material subassembly, the upper die base is located the top of die holder, be provided with first support column on the die holder, be provided with the first compression leg corresponding with first support column on the upper die base, it can block the location to passing the tool of carrying between along die holder and the upper die base to keep off the material subassembly, a drive mechanism can drive the die holder up-and-down motion so that die holder and upper die base carry out compound die and die sinking, along with die holder and upper die base compound die, first support column and first compression leg can carry out the riveting to the product of placing on the tool.

In some embodiments, the upper die base is provided with a first stripper plate, a first elastic piece is arranged between the upper die base and the first stripper plate, the upper end of the first elastic piece is matched with the upper die base, the lower end of the first elastic piece is matched with the first stripper plate, and the first stripper plate can move up and down and compress the first elastic piece simultaneously.

In some embodiments, the rack is provided with a stroke detection assembly matched with the up-and-down movement of the lower die holder and a first detection assembly for detecting the jig.

In some embodiments, the first driving mechanism is an electric cylinder, and the output end of the first driving mechanism is connected with a pressure sensor which is connected with the lower die holder.

In some embodiments, the material blocking assembly comprises a first support, the first support is provided with a first connecting seat and a second driving mechanism for driving the first connecting seat to move up and down, and the first connecting seat is provided with a first catch wheel.

In some embodiments, a lower die plate and a first guide pillar are arranged on the lower die base, the first support pillar is arranged on the lower die plate, the first guide pillar is arranged in the vertical direction, a first guide hole in sliding connection with the first guide pillar is arranged on the lower die plate, a second elastic part is arranged between the lower die plate and the lower die base, the upper end of the second elastic part is matched with the lower die plate, the lower end of the second elastic part is matched with the lower die base, and a second guide hole matched with the first guide pillar is arranged on the upper die base.

In some embodiments, a second stripper plate is arranged on the lower template, a third elastic element is arranged between the second stripper plate and the lower template, the upper end of the third elastic element is matched with the second stripper plate, the lower end of the third elastic element is matched with the lower template, and the second stripper plate can move up and down and compress the third elastic element at the same time.

In some embodiments, a second guide rod is arranged on the lower template and arranged in the vertical direction, the top of the second guide rod is fixedly connected with the second stripper plate, a second limiting part is arranged at the bottom of the second guide rod, a third guide hole in sliding connection with the second guide rod is arranged on the lower template, the upper end of the third elastic element is pressed on the second stripper plate, the lower end of the third elastic element is pressed on the lower template, and the lower template and the second guide rod can slide relatively and compress the third elastic element simultaneously.

In some embodiments, the lower die holder is provided with a first top pillar matched with the first support pillar, the first top pillar is arranged along the vertical direction, the lower die plate is provided with a first through hole matched with the first top pillar, and the first support pillar is provided with a second through hole matched with the first top pillar.

In some embodiments, a second guide pillar for matching with a jig is arranged on the lower template, a third guide pillar for matching with the jig is arranged on the upper die holder, the second guide pillar and the third guide pillar are arranged in the vertical direction, and a third through hole for matching with the second guide pillar is arranged on the second stripper plate.

The beneficial effects of this disclosure are: corresponding conveyor will place the tool of lithium battery lid product and carry to between die holder and the upper die base, it blocks the material subassembly and blocks the location to the tool, then first actuating mechanism drive die holder upward movement, make die holder and upper die base carry out the compound die, along with die holder and upper die base compound die, first support column cooperatees with first compression leg, the completion is to the riveting processing of placing the product on the tool, after the die sinking, corresponding conveyor exports the tool again, this operation is repeated constantly, thereby realize the automatic riveting equipment of lithium battery lid, for example, with the anodal post that the lithium battery covered, riveting connection such as negative pole post, convenient operation, and is swift, low in labor strength, the manpower is saved, the precision is high, security and reliability are high, production efficiency and productivity have been improved, be convenient for the automatic on-line production of product, the cost is reduced etc.

In addition, in the technical solutions of the present disclosure, the technical solutions can be implemented by adopting conventional means in the art, unless otherwise specified.

Drawings

In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present disclosure, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic structural diagram of a lithium battery cover riveting and assembling mechanism according to an embodiment of the disclosure.

Fig. 2 is a schematic structural diagram of a lithium battery cover riveting and assembling mechanism according to an embodiment of the disclosure.

Fig. 3 is a schematic structural view of a lower die holder according to an embodiment of the present disclosure.

FIG. 4 is a partial cross-sectional view of a lower die holder according to one embodiment of the present disclosure.

Fig. 5 is a schematic structural diagram of an upper die holder according to an embodiment of the disclosure.

Fig. 6 is a partial cross-sectional view of an upper die base of an embodiment of the present disclosure.

Fig. 7 is a schematic structural diagram of a striker assembly according to an embodiment of the disclosure.

The reference numerals in the drawings indicate that the machine frame 1, the lower die holder 2, the first support column 21, the second through hole 211, the lower die plate 22, the first guide hole 221, the second guide column 222, the first through hole 223, the third guide hole 224, the first guide column 23, the second elastic member 24, the first support column 25, the second stripper plate 26, the third through hole 261, the second guide rod 27, the second limiting portion 271, the third elastic member 28, the third guide rod 29, the upper die holder 3, the first pressing column 31, the first stripper plate 32, the fourth guide hole 321, the first guide rod 33, the first limiting portion 331, the first sleeve 332, the first elastic member 34, the second guide hole 35, the third guide column 36, the first mounting block 37, the first driving mechanism 4, the pressure sensor 41, the first stopping assembly 5, the first bracket 51, the first connecting seat 52, the second driving mechanism 53, the first stopping wheel 54, the stroke detecting assembly 6, and the first detecting assembly 7.

Detailed Description

In order to make the objects, technical solutions and advantages of the present disclosure more clearly understood, the present disclosure is further described in detail below with reference to the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are merely illustrative of some, but not all embodiments of the disclosure, and are not to be construed as limiting the disclosure. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.

In the description of the present disclosure, it is to be noted that the terms "center", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer", "both ends", "both sides", "bottom", "top", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the elements referred to must have a specific orientation or be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present disclosure. Furthermore, the terms "first," "second," "upper," "lower," "primary," "secondary," and the like are used for descriptive purposes only and may be used for purposes of simplicity in more clearly distinguishing between various components and not to indicate or imply relative importance.

In the description of the present disclosure, it should be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are used in a broad sense and can be, for example, fixedly connected, detachably connected, integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected through an intermediate medium, or connected through the inside of two elements. The specific meaning of the above terms in the present disclosure can be understood in specific instances by those of ordinary skill in the art.

Referring to fig. 1 ~ 7 shown, schematically show according to this disclosure lithium battery lid riveting equipment mechanism, including frame 1, be provided with die holder 2 in the frame 1, upper die base 3, first actuating mechanism 4 and keep off material subassembly 5, upper die base 3 is located the top of die holder 2, die holder 2 and the corresponding cooperation of upper die base 3, be provided with first support column 21 on the die holder 2, be provided with the first compression leg 31 corresponding with first support column 21 on the

upper die base

3, 2 up-and-down motion of first actuating mechanism 4 drive die holder, make die holder 2 and upper die base 3 carry out compound die and die sinking. The number, arrangement and the like of the first support columns 21 and the first pressing columns 31 are determined according to actual conditions such as specific products and the number of primary riveting products.

In the use, corresponding conveyor carries the tool of placing the lithium battery lid product to between die holder 2 and the upper die base 3, it blocks the location to the tool earlier to keep off material subassembly 5, then 2 upward motions of first actuating mechanism 4 drive die holder, make die holder 2 and upper die base 3 carry out the compound die, along with die

holder

2 and 3 compound dies of upper die base, first support column 21 cooperatees with first compression leg 31, accomplish the riveting processing to the product of placing on the tool, after the die sinking, corresponding conveyor exports the tool again, this operation is constantly repeated, thereby realize the automatic riveting equipment of lithium battery lid, for example with the anodal post on the lithium battery lid, riveting such as negative pole is connected. Along with the compound die of lower bolster 2 and upper die base 3, first support column 21 cooperatees with first compression leg 31, can carry out the pre-compaction to the product earlier, then carries out the riveting, and is more stable, reliable.

The first driving mechanism 4 can adopt a cylinder, an oil cylinder, an electric cylinder, a linear module and the like. First actuating mechanism 4 is the electric cylinder, and first actuating mechanism 4's output is connected with pressure sensor 41, and pressure sensor 41 is connected with die holder 2, and the precision is higher, and the motion is more stable, reliable, and control is more convenient etc.

The rack 1 is provided with a stroke detection assembly 6 matched with the up-and-down movement of the lower die holder 2, so that the movement of the lower die holder 2 can be controlled more accurately. The stroke detection assembly 6 can adopt a grating ruler, one end of a first connecting rod is connected with the lower die holder 2, the other end of the first connecting rod is connected with a reading head of the grating ruler, and the stroke detection assembly is simple in structure, convenient to operate, and more stable and reliable. The travel detection assembly 6 may also employ other suitable detection elements known in the art, such as travel switches.

Be provided with first detection component 7 that is used for detection tool on the frame 1, for example photoelectric switch, infrared sensor etc. first detection component 7's quantity, arrange etc. and decide according to specific circumstances, for example can set up two first detection component 7 at feed end and discharge end symmetry respectively. In the use, when only detecting that there is the tool between die holder 2 and the upper die base 3, feedback signal gives control system again, and control system controls the motion of first actuating mechanism 4 drive die holder 2 again to prevent not having the material to carry out the pneumatics and damaging equipment etc. safer, reliable.

Keep off material subassembly 5 and include first support 51, be provided with first connecting seat 52 and the second actuating mechanism 53 of the first connecting seat 52 up-and-down motion of drive on the first support 51, be provided with first fender wheel 54 on the first connecting seat 52, keep off material subassembly 5 package and set up the discharge end at die holder 2 and upper die base 3, the first connecting seat 52 up-and-down motion of second actuating mechanism 53 drive for first fender wheel 54 on the first connecting seat 52 can block the location to the tool, prevent that the tool from falling out etc.. The second driving mechanism 53 can adopt a cylinder, an oil cylinder, an electric cylinder, a linear module and the like, for example, the cylinder is adopted, and the structure is simple and compact, the installation and the maintenance are convenient, and the safety, the environmental protection and the like are realized. The first catch wheel 54 may be an elastic member or a flexible member, which can buffer and protect, reduce damage and noise, and the first connecting seat 52 may be provided with a rotating shaft rotatably connected to the first catch wheel 54.

The upper die base 3 is provided with a first stripper plate 32, a first elastic part 34 is arranged between the upper die base 3 and the first stripper plate 32, the upper end of the first elastic part 34 is matched with the upper die base 3, the lower end of the first elastic part 34 is matched with the first stripper plate 32, and the number and the arrangement of the first elastic parts 34 are determined according to specific conditions. When the mold is closed, the first stripper plate 32 is forced to move upwards, the first elastic piece 34 is compressed, and when the mold is opened, the first elastic piece 34 can push the first stripper plate 32 to automatically move downwards to reset, so that the stripping is facilitated.

The upper die holder 3 is provided with a first guide rod 33, the first guide rod 33 is arranged in the vertical direction, the top of the first guide rod 33 is fixedly connected with the upper die holder 3, for example, the first guide rod is in threaded connection with the upper die holder 3, the bottom of the first guide rod 33 is provided with a first limiting portion 331, the first stripper plate 32 is provided with a fourth guide hole 321 in sliding connection with the first guide rod 33, the lower end of the first elastic element 34 is pressed against the first stripper plate 32, the upper end of the first elastic element 34 is pressed against the upper die holder 3, the bottom of the first stripper plate 32 is matched with the first limiting portion 331, and the first stripper plate 32 can slide up and down along the first guide rod 33 and compress the first elastic element 34. The number and arrangement of the first guide rods 33 are determined according to specific conditions, the first guide rods 33 may be screws with smooth sections, the first limiting portions 331 are heads of the screws, the first elastic members 34 may be springs, groove bodies matched with the first elastic members 34 may be respectively arranged on the first stripper plate 32 and the upper die holder 3, and the first elastic members 34 may also be sleeved on the first guide rods 33. In addition, the first guide rod 33 is not needed, and the first elastic member 34 is fixedly connected to the first stripper plate 32 and the upper die holder 3, respectively.

The fourth guiding hole 321 may further include a first shaft sleeve 332, such as a linear bearing, a guiding sleeve, etc., which is engaged with the first guiding rod 33, so that the movement is more stable and reliable.

Still be provided with the first installation piece 37 of fixed first compression leg 31 on the upper die base 3, be provided with on the first flitch 32 and dodge the groove with first installation piece 37 matched with, it is more convenient to operate etc..

Be provided with lower bolster 22 and first guide pillar 23 on the lower bolster 2, first support column 21 sets up on lower bolster 22, first guide pillar 23 sets up along vertical direction, be provided with on the lower bolster 22 with first guide hole 221 of first guide pillar 23 sliding connection, be provided with second elastic component 24 between lower bolster 22 and the lower bolster 2, the upper end and the lower bolster 22 of second elastic component 24 cooperate, the lower extreme and the lower bolster 2 of second elastic component 24 cooperate, be provided with on the upper die base 3 with first guide hole 35 of first guide pillar 23 matched with, second elastic component 24 has effects such as buffer protection. The number and arrangement of the first guide posts 23 and the second elastic members 24 may be determined according to specific conditions, and the lower die holder 2 and the lower die plate 22 may be connected by referring to the structure of the first elastic members 34 and the first guide rods 33.

The lower die plate 22 is provided with a second stripper plate 26, a third elastic element 28 is arranged between the second stripper plate 26 and the lower die plate 22, the upper end of the third elastic element 28 is matched with the second stripper plate 26, the lower end of the third elastic element 28 is matched with the lower die plate 22, and the number and the arrangement of the third elastic elements 28 are determined according to specific conditions. When the mold is closed, the first elastic element 34 is compressed, and when the mold is opened, the third elastic element 28 can push the second stripper plate 26 to automatically move upwards to reset, so that the stripping is convenient.

The lower die plate 22 is provided with a second guide rod 27, the second guide rod 27 is arranged along the vertical direction, the top of the second guide rod 27 is fixedly connected with the second stripper plate 26, the bottom of the second guide rod 27 is provided with a second limiting part 271, the lower die plate 22 is provided with a third guide hole 224 in sliding connection with the second guide rod 27, the upper end of the third elastic element 28 is pressed against the second stripper plate 26, the lower end of the third elastic element 28 is pressed against the lower die plate 22, and the lower die plate 22 and the second guide rod 27 can slide relatively and compress the third elastic element 28 simultaneously. The second guide rod 27 can penetrate through the lower die holder 2, a through hole matched with the second guide rod 27 is formed in the lower die holder 2, and the second limiting portion 271 is matched with the bottom of the lower die holder 2. The number and arrangement of the second guide rods 27 are determined according to specific conditions, the third elastic members 28 may be springs, grooves matched with the third elastic members 28 may be respectively formed on the second stripper plate 26 and the lower die plate 22, and the third elastic members 28 may also be sleeved on the second guide rods 27. In addition, the second guide rod 27 may not be used, and the third elastic member 28 may be fixedly connected to the second stripper plate 26 and the lower die plate 22, respectively.

Be provided with on the lower bolster 2 with first support column 21 matched with first fore-set 25, first fore-set 25 and first support column 21 one-to-one, first fore-set 25 sets up along vertical direction, is provided with on the lower bolster 22 with first fore-set 25 matched with first through-hole 223, be provided with on the first support column 21 with first fore-set 25 matched with second through-hole 211. When the die is closed, the first supporting column 21 firstly supports against the product, and then the first supporting column 25 penetrates through the first through hole 223 and the second through hole 211 to be matched with the first pressing column 31, so that the product is more convenient to pre-press and rivet-press, and the like, and the die is more stable and reliable.

The lower template 22 is provided with a second guide post 222 used for being matched with a jig, the upper die base 3 is provided with a third guide post 36 used for being matched with the jig, the second guide post 222 and the third guide post 36 are arranged along the vertical direction, the second stripper plate 26 is provided with a third through hole 261 matched with the second guide post 222, and the number, arrangement and the like of the second guide post 222 and the third guide post 36 are determined according to specific conditions, so that the lower die base is more stable and reliable.

The lower die holder 2 can be further provided with a third guide rod 29, the third guide rod 29 is arranged in the vertical direction, the number and the arrangement of the third guide rods 29 are determined according to specific conditions, and the frame 1 is provided with a guide hole matched with the third guide rod 29, so that the lower die holder 2 can be ensured to move up and down more stably.

Compared with the prior art, the advantage of this disclosure has: the automatic riveting assembly of the lithium battery cover is realized, for example, the positive pole, the negative pole and the like on the lithium battery cover are connected in a riveting manner, the operation is convenient and rapid, the labor intensity is low, the labor is saved, the structure is compact, stable and reliable, the precision is high, the safety, the stability and the reliability are high, the production efficiency and the productivity are improved, the automatic online production of products is facilitated, and the cost is reduced.

The foregoing is directed to embodiments of the present disclosure, which are provided for illustration only and not for limitation, and it is understood that modifications and substitutions may be made by those skilled in the art without departing from the spirit of the disclosure and all such modifications and substitutions are to be considered within the scope of the appended claims. In this case all the details may be replaced with equivalent elements, and the materials, shapes and dimensions may be any.

Claims

1. The lithium battery cover riveting and assembling mechanism is characterized by comprising a rack (1), wherein a lower die holder (2), an upper die holder (3), a first driving mechanism (4) and a material blocking assembly (5) are arranged on the rack (1), the upper die holder (3) is positioned above the lower die holder (2), a first support column (21) is arranged on the lower die holder (2), a first pressure column (31) corresponding to the first support column (21) is arranged on the upper die holder (3), the material blocking assembly (4) can block and position a fixture which passes through the upper die holder (3) and is conveyed along the space between the lower die holder (2) and the upper die holder (3), the first driving mechanism (4) can drive the lower die holder (2) to move up and down so that the lower die holder (2) and the upper die holder (3) can carry out die assembly and die disassembly, and the lower die holder (2) and the upper die holder (3) are assembled together, the first support column (21) and the first compression column (31) can be used for riveting and pressing products placed on the jig.

2. The lithium battery cover riveting and assembling mechanism according to claim 1, wherein the upper die base (3) is provided with a first stripper plate (32), a first elastic member (34) is arranged between the upper die base (3) and the first stripper plate (32), the upper end of the first elastic member (34) is matched with the upper die base (3), the lower end of the first elastic member (34) is matched with the first stripper plate (32), and the first stripper plate (32) can move up and down and compress the first elastic member (34) at the same time.

3. The lithium battery cover riveting and assembling mechanism of claim 1, wherein the rack (1) is provided with a stroke detection assembly (6) which is matched with the lower die holder (2) in an up-and-down motion manner and a first detection assembly (7) for detecting a jig.

4. The lithium battery cover riveting and assembling mechanism of claim 1, wherein the first driving mechanism (4) is an electric cylinder, an output end of the first driving mechanism (4) is connected with a pressure sensor (41), and the pressure sensor (41) is connected with the lower die holder (2).

5. The lithium battery cover riveting and assembling mechanism of claim 1, wherein the material blocking assembly (5) comprises a first support (51), a first connecting seat (52) and a second driving mechanism (53) for driving the first connecting seat (52) to move up and down are arranged on the first support (51), and a first catch wheel (54) is arranged on the first connecting seat (52).

6. The lithium battery cover riveting and pressing assembly mechanism according to any one of claims 1 to 5, it is characterized in that a lower template (22) and a first guide post (23) are arranged on the lower die base (2), the first supporting column (21) is arranged on the lower template (22), the first guide column (23) is arranged along the vertical direction, the lower template (22) is provided with a first guide hole (221) which is connected with the first guide post (23) in a sliding way, a second elastic piece (24) is arranged between the lower template (22) and the lower die holder (2), the upper end of the second elastic piece (24) is matched with the lower template (22), the lower end of the second elastic piece (24) is matched with the lower die holder (2), and a second guide hole (35) matched with the first guide pillar (23) is formed in the upper die base (3).

7. The lithium battery cover riveting and assembling mechanism of claim 6, wherein a second stripper plate (26) is arranged on the lower template (22), a third elastic element (28) is arranged between the second stripper plate (26) and the lower template (22), the upper end of the third elastic element (28) is matched with the second stripper plate (26), the lower end of the third elastic element (28) is matched with the lower template (22), and the second stripper plate (26) can move up and down and compress the third elastic element (28) at the same time.

8. The lithium battery cover riveting and assembling mechanism of claim 7, wherein a second guide rod (27) is arranged on the lower template (22), the second guide rod (27) is arranged in the vertical direction, the top of the second guide rod (27) is fixedly connected with the second stripper plate (26), a second limiting portion (271) is arranged at the bottom of the second guide rod (27), a third guide hole (224) in sliding connection with the second guide rod (27) is arranged on the lower template (22), the upper end of the third elastic element (28) is pressed against the second stripper plate (26), the lower end of the third elastic element (28) is pressed against the lower template (22), and the lower template (22) and the second guide rod (27) can slide relatively and compress the third elastic element (28) at the same time.

9. The lithium battery cover riveting and assembling mechanism of claim 8, wherein a first top pillar (25) matched with the first supporting pillar (21) is arranged on the lower die holder (2), the first top pillar (25) is arranged along a vertical direction, a first through hole (223) matched with the first top pillar (25) is arranged on the lower die plate (22), and a second through hole (211) matched with the first top pillar (25) is arranged on the first supporting pillar (21).

10. The lithium battery cover riveting and assembling mechanism of claim 9, wherein the lower die plate (22) is provided with a second guide post (222) for matching with a jig, the upper die base (3) is provided with a third guide post (36) for matching with the jig, the second guide post (222) and the third guide post (36) are arranged along a vertical direction, and the second stripper plate (26) is provided with a third through hole (261) for matching with the second guide post (222).