CN113977366B

CN113977366B - Polishing jig and polishing method for cutter

Info

Publication number: CN113977366B
Application number: CN202111338809.1A
Authority: CN
Inventors: 陈保明; 周龚桂; 温小华; 谭科
Original assignee: Guangdong Rixin High Precision Technology Co ltd
Current assignee: Guangdong Rixin High Precision Technology Co ltd
Priority date: 2021-11-12
Filing date: 2021-11-12
Publication date: 2022-11-18
Anticipated expiration: 2041-11-12
Also published as: CN113977366A

Abstract

The invention provides a polishing jig of a cutter and a polishing method thereof, the polishing jig is arranged on a moving platform of a grinding machine, the cutter is arranged on the polishing jig, the polishing jig comprises a jig seat body, an adjusting seat and a gasket, the gasket is installed on the adjusting seat, the adjusting seat is installed on the jig seat body, when polishing, the front of the cutting edge of the cutter is a polishing surface, and the back of the cutting edge of the cutter is abutted to the gasket. By arranging the polishing jig, the cutting edge of the cutter is the embedded tungsten steel cutting edge, so that the cutting edge of the cutter is supported against the gasket when the cutting edge of the cutter is polished, when the cutting edge is polished, the back of the cutting edge is supported through the gasket, so that serious defects such as cutting edge notches and scratches can be prevented when the cutting edge is polished.

Description

Polishing jig and polishing method for cutter

Technical Field

The invention relates to the field of new energy lithium battery metal foil cutter polishing, in particular to a polishing jig of a cutter and a polishing method of the cutter.

Background

A lithium ion battery is a green battery having excellent performance, and generally includes an electrode body formed by winding or laminating an aluminum foil coated with a positive electrode active material, a metal foil coated with a copper foil coated with a negative electrode active material, and a separator;

at present, in the production process of the electrode body, the metal foil needs to be cut into a required size through a cutter, so that the grinding of the cutting edge of the cutter is very important, and once the cutting edge is not sharp or has a notch, the cut metal foil is easy to generate defects such as burrs or notches.

In order to prolong the service life of a common cutter, a tungsten steel blade is embedded at the blade of the cutter, and in order to ensure the sharpness of the blade, the blade needs to be ground to be very thin, however, when the knife edge is ground, the knife edge is directly placed on a moving platform of a grinding machine for grinding, but because the knife edge is very thin, the hardness of the knife edge is very high, and a gap is very easy to generate during grinding.

Disclosure of Invention

The invention aims to provide a cutter polishing jig and a cutter polishing method, which can prevent a cutter edge of a cutter from generating a notch when the cutter is polished.

In order to achieve the above purpose, the invention provides the following technical scheme:

the utility model provides a tool of polishing of cutter for the cutter of battery foil piece is cut in clamping on the grinding machine, the tool of polishing is installed on the moving platform of grinding machine, the cutter is installed on the tool of polishing, the tool of polishing includes tool seat body, adjustment seat and gasket, the gasket is installed on the adjustment seat, the adjustment seat is installed on tool seat body, when polishing, the preceding face of polishing that is of the cutting edge of cutter, the back pad of the cutting edge of cutter leans on the gasket.

Furthermore, the jig base body is rectangular, the lower side of the back of the jig seat body forms a first inclined plane through a chamfer angle.

Furthermore, the back of the jig seat body is provided with a plurality of weight avoiding grooves.

Furthermore, a plurality of first threaded holes used for locking the cutter are formed in the front of the jig base body.

Furthermore, the upper side edge in front of the jig seat body is provided with a mounting groove, and the adjusting seat is adjustably mounted in the mounting groove.

Furthermore, a plurality of waist-shaped adjusting holes are formed in the upper surface of the adjusting seat, and a plurality of U-shaped adjusting holes are formed in the position, close to the upper side edge, of the back surface of the jig seat body.

Further, the gasket is arranged in front of the adjusting seat.

Furthermore, the front surface of the gasket is flush with the front surface of the jig seat body, the upper side edge of the front face of the gasket forms a second inclined plane through a chamfer angle, and the second inclined plane is parallel to the first inclined plane.

Further, the device also comprises a cushion block, the cushion block is arranged between the adjusting seat and the jig seat body.

The invention has the beneficial effects that:

according to the invention, by arranging the polishing jig, as the cutting edge of the cutter is the embedded tungsten steel cutting edge, when the cutting edge of the cutter is polished, the cutting edge of the cutter is supported by the gasket, and the back of the cutting edge is supported by the gasket, so that serious defects such as cutting edge gaps, scratches and the like can be prevented when the cutting edge is polished.

A polishing method of a polishing jig of a cutter comprises the following steps:

s1: the back of the cutter is ground flat, detecting the flatness of the back of the cutter by using a dial indicator;

s2: clamping the polishing jig on a moving platform of a grinding machine;

s3: the back of the cutter is tightly attached to the front of the jig seat body;

s4: the height of the gasket is adjusted through the adjusting seat, the front of the gasket is attached to the back of the cutter, the flatness of the grinding surface of the cutter is detected through a dial indicator, and the cutter is locked on the jig seat body;

s5: and finally, grinding the gasket and the blade of the cutter together by a grinding wheel of the grinding machine.

The beneficial effects of the invention are as follows:

according to the invention, when the cutter is polished, the polishing surface of the cutter and the polishing surface of the gasket are on the same plane, and the two surfaces are polished simultaneously during polishing, and after a long time, the polishing surface of the gasket is lower than the bottom surface of the cutter, so that the bottom surface of the gasket cannot be abutted against the gasket during polishing of the cutter.

Drawings

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

FIG. 1 is a schematic view of a cutting blade requiring grinding according to the present invention;

FIG. 2 is a schematic view of the grinding jig and cutter of the present invention when clamped in a grinding machine;

FIG. 3 is a schematic structural view of the polishing jig of the present invention without a cutting blade clamped;

fig. 4 is a schematic three-dimensional structure diagram of the grinding jig clamping cutter of the invention;

fig. 5 is a schematic structural view of the grinding jig after clamping and disassembling of the cutter;

FIG. 6 is a front view of the polishing jig of the present invention clamping a cutting blade;

FIG. 7 is a schematic view of the adjusting seat of the present invention;

FIG. 8 is a schematic structural view of a jig base body according to the present invention;

FIG. 9 is an exploded view of the jig base and the adjustment base of the present invention;

FIG. 10 is a schematic view of the construction of the gasket of the present invention;

FIG. 11 is a schematic view of the cushion block of the present invention between the adjusting seat and the fixture seat body;

FIG. 12 is a schematic view of the cushion block between the adjusting seat and the fixture seat body according to the present invention;

fig. 13 is a partial enlarged view of fig. 12 at B.

The attached drawings indicate the following:

1. polishing the jig; 2. a cutter; 3. a grinding machine; 4. a mobile platform; 5. a grinding wheel;

11. a jig base body; 12. an adjusting seat; 13. a gasket;

121. glue; 21. a blade;

111. a weight-avoiding groove; 112. a first threaded hole; 113. a positioning column; 114. mounting grooves;

121. a waist-shaped adjusting hole; 115. a U-shaped adjusting hole; 131. a second inclined surface; 116. a first inclined plane;

6. cushion blocks; 122. a first chamfer angle;

Detailed Description

In order that those skilled in the art will better understand the technical solutions of the present invention, the following detailed description of the present invention is provided in conjunction with the accompanying drawings and the specific embodiments.

The cutter 2 shown in fig. 1 is installed in a mold to cut a battery metal foil including, but not limited to, a battery copper foil and a battery aluminum foil, and belongs to a high-precision cutting cutter 2.

In the metal foil cutting process, the quality of the cut edge of the metal foil has an important influence on the performance and quality of the battery, and the method specifically comprises the following steps: (1) Burrs and impurities can cause short circuit in the battery and cause self-discharge and even thermal runaway; (2) The size precision is poor, the cathode can not be completely wrapped by the anode, or the diaphragm can completely isolate the anode and the cathode pole pieces, so that the safety problem of the battery is caused; (3) The material loses activity and cannot play a role due to heat damage, coating falling and the like; (4) The unevenness of the cut edge causes the nonuniformity of the pole piece in the charging and discharging process.

Therefore, the metal foil cutting process needs to avoid the problems and improve the process quality, so the sharpness of the blade 21 of the cutter 2 is very important, and the grinding requirement of the cutter 2 during the processing and grinding of the cutter 2 is very high.

The abrasion condition of the blade 21 of the cutter 2 has an important influence on the punching process, the punching gap is increased along with the abrasion of the cutter 2, the fillet of the blade 21 of the cutter 2 is increased, and the section quality of the metal foil is changed, so that the grinding maintenance of the blade 21 of the abraded cutter 2 is also very important.

As shown in fig. 2, when the cutting knife 2 is ground, a special grinding jig 1 needs to be arranged for clamping, in this embodiment, the grinding jig 1 of the cutting knife 2 is mounted on the moving platform 4 of the grinding machine 3 after clamping the cutting knife 2, and the cutting knife 2 is ground through the grinding wheel 5 of the grinding machine 3.

As shown in fig. 3 to 6, the polishing jig 1 includes a jig base body 11, an adjusting base 12 and a gasket 13, the gasket 13 is adhered to the adjusting base 12 through glue 121, the adjusting base 12 is adjustably mounted on the jig base body 11, when polishing, the front of the blade 21 of the cutter 2 is a polishing surface, and the back of the blade 21 of the cutter 2 is abutted against the gasket 13; this embodiment is through setting up tool 1 of polishing, because the cutting edge 21 of cutter 2 is inlayed tungsten steel cutting edge 21, when polishing the cutting edge 21 of cutter 2, through leaning on cutting edge 21 pad with cutter 2 on gasket 13, the back of cutting edge 21 supports through gasket 13 to serious defects such as cutting edge 21 breach, fish tail appear when can preventing that cutting edge 21 from polishing.

As shown in fig. 7, the gasket 13 is fixed on the adjusting seat 12 by the glue 121, because the gasket 13 is thin, it is inconvenient to lock by using a screw, and the adhesion by the glue 121 is firmer.

As shown in fig. 7, in addition, a first bevel 122 is disposed on the lower side of the back of the adjusting base, and the first bevel 122 is disposed to facilitate the installation of the adjusting base.

As shown in fig. 8, in the present embodiment, the jig base body 11 is rectangular, the lower side of the back of the jig base body 11 forms a first inclined surface 116 by chamfering, the inclination angle of the first inclined surface 116 is set according to the polishing surface a of the cutter 2, the first inclined surface 116 is parallel to the polishing surface a of the cutter 2, and the first inclined surface 116 is attached to the moving platform 4 of the grinding machine 3, so that the polishing surface a is flat when the cutter 2 is polished.

As shown in fig. 8, in the present embodiment, the back surface of the fixture seat body 11 is provided with a plurality of weight-avoiding grooves 111, the shape of the weight-avoiding grooves 111 in the present embodiment includes but is not limited to a rectangle, and since the fixture body has a longer size and a larger weight, the weight of the fixture seat body 11 is reduced by providing the weight-avoiding grooves 111, which facilitates the transportation and installation of workers.

As shown in fig. 5, in this embodiment, a plurality of first threaded holes 112 for locking the cutter 2 are formed in the front of the tool holder body 11, the threaded holes correspond to the mounting holes on the cutter 2, so as to facilitate fixing of the cutter 2, in addition, a positioning column 113 is further formed in the front of the tool holder body 11, the positioning column 113 is used for facilitating clamping of the cutter 2, the cutter 2 is positioned through the positioning column 113 during clamping, the cutter 2 is prevented from sliding downwards, the positioning column is arranged to enable the knife edge to be an inclined cutter, and the knife edge of the cutter is kept in a horizontal state under positioning of the positioning column.

As shown in fig. 5, in the present embodiment, a mounting groove 114 is formed on an upper side of the front surface of the jig base body 11, the mounting groove 114 has a rectangular structure, the shape of the mounting groove 114 is matched with that of the adjustment base 12, and the adjustment base 12 is adjustably mounted in the mounting groove 114.

As shown in fig. 5, in this embodiment, a plurality of waist-shaped adjusting holes 121 are formed in the upper surface of the adjusting seat 12, threaded holes are correspondingly formed in corresponding waist-shaped adjusting holes of the mounting groove 114, a plurality of U-shaped adjusting holes 115 are formed in the back surface of the jig seat body 11 near the upper side, the adjusting seat 12 corresponds to the U-shaped adjusting holes 115, and threaded holes are formed in the back surface of the adjusting seat 12, in this embodiment, the waist-shaped adjusting holes 121 are formed in the upper surface of the adjusting seat 12, so that the adjusting seat 12 can be adjusted in the front-back direction, the adjusting seat 12 can be adjusted in the up-down direction by forming the U-shaped adjusting holes 115, after the waist-shaped adjusting holes 121 are screwed out, since the U-shaped adjusting holes 115 are open, the adjusting seat 12 can be detached as long as screws in the U-shaped adjusting holes 115 are loosened, and the adjusting seat 12 is convenient to detach.

As shown in fig. 10, in the present embodiment, the gasket 13 is installed in front of the adjustment seat 12, the front of the gasket 13 is flush with the front of the jig seat body 11, the upper side edge of the front of the gasket 13 forms a second inclined surface 131 by chamfering, and the second inclined surface 131 is parallel to the first inclined surface 116.

As shown in fig. 11, in this embodiment, the present invention further includes a cushion block 6, the cushion block 6 is disposed between the adjusting seat 12 and the tool seat body 11, when the second inclined plane 131 of the gasket is ground down, the adjusting seat and the gasket can be moved up, and the second inclined plane 131 of the gasket is lifted up, so that the gasket can be used for multiple times, and the cost of the grinding tool can be reduced, when adjusting, after the adjusting seat 12 is adjusted in the vertical direction, a gap can be formed between the adjusting seat 12 and the mounting groove 114 in the vertical direction, in order to further ensure that the gasket 13 and the adjusting seat 12 do not shake when the cutter 2 is ground, by inserting the cushion block 6 into the gap, after the adjusting seat 12 is locked, the cushion block 6 can support the adjusting seat in the vertical direction 12, so that the adjusting seat 12 does not shake when the cutter 2 is ground.

As shown in fig. 12 to 13, in this embodiment, when the upper and lower positions are adjusted to the limit, the adjusting seat is adjusted in the front-rear direction, after the adjusting seat 12 is adjusted in the front-rear direction, a gap is formed between the adjusting seat 12 and the mounting groove 114 in the front-rear direction, in order to further ensure that the gasket 13 and the adjusting seat 12 do not shake when the cutter 2 is polished, the cushion block 6 is inserted into the gap, so that after the adjusting seat 12 is locked, the cushion block 6 can support the adjusting seat 12, and the adjusting seat 12 does not shake when the cutter 2 is polished.

A polishing method of a polishing jig 1 of a cutter 2 comprises the following steps:

s1: grinding the back surface of the cutter 2 to be flat, and ensuring that the back surface of the cutter 2 is also a plane;

s2: clamping the polishing jig 1 on a moving platform 4 of a grinding machine 3;

s3: the back of the cutter 2 is tightly attached to the front of the tool seat body 11;

s4: in addition, the height of the gasket 13 is adjusted through the adjusting seat, the front of the gasket is attached to the back of the cutter, the cutter can be supported through the front of the gasket, the flatness of the grinding surface of the cutter is detected by a dial indicator, the situation that dust or impurities exist on the back of the cutter 2 and the front of the jig seat body 11 to influence the flatness of the grinding surface of the cutter is prevented, once the grinding surface of the cutter is uneven, the grinding of the cutting edge of the cutter is influenced, the grinding surface of the cutter 2 and the grinding surface of the gasket 13 are on the same plane, and the cutter 2 is locked on the jig seat body 11;

s5: finally, the grinding wheel 5 of the grinding machine 3 grinds the gasket 13 and the blade 21 of the cutter 2 together, and the blade 21 of the cutter 2 is the cushion block 6 on the gasket 13, so that no gap is formed in the blade 21 during grinding.

According to the invention, when the cutter 2 is polished, the polishing surface of the cutter 2 and the polishing surface of the gasket 13 are on the same plane, and the two surfaces are polished simultaneously during polishing, and after a long time, the polishing surface of the gasket 13 is lower than the bottom surface of the cutter 2, so that the bottom surface of the cutter 2 cannot be abutted against the gasket 13 during polishing.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The utility model provides a tool of polishing of cutter for the cutter of battery foil piece is cut in the clamping on the grinding machine, the tool of polishing is installed on the moving platform of grinding machine, the cutter is installed on the tool of polishing, its characterized in that: the polishing jig comprises a jig seat body, an adjusting seat and a gasket, wherein the gasket is installed on the adjusting seat, the adjusting seat is installed on the jig seat body, and when polishing is carried out, the front surface of the cutting edge of the cutter is a polishing surface, the back surface of the cutting edge of the cutter is abutted against the gasket, the jig seat body is in a rectangular shape, the lower side edge of the back surface of the jig seat body forms a first inclined surface through a chamfer angle, the front surface of the gasket is parallel to the front surface of the jig seat body, the front upper side edge of the gasket forms a second inclined surface through the chamfer angle, the second inclined surface is parallel to the first inclined surface, a plurality of waist-shaped adjusting holes are formed in the upper surface of the adjusting seat, a plurality of U-shaped adjusting holes are formed in the position, close to the upper side edge, of the back surface of the jig seat body, the waist-shaped adjusting holes are formed in the upper surface of the adjusting seat, the adjusting seat can be adjusted in the front and back directions, the adjusting seat can be adjusted through the U-shaped adjusting holes, the adjusting seat can be adjusted in the up and the adjusting seat can be adjusted according to the abrasion degree of the gasket, so that the polishing surface of the cutter and the polishing surface of the gasket are on the same plane.

2. The grinding jig for the cutter according to claim 1, wherein: the back of the jig seat body is provided with a plurality of weight avoiding grooves.

3. The grinding jig for the cutting knife according to claim 1, wherein: a plurality of first threaded holes used for locking the cutter are formed in the front of the jig base body.

4. The grinding jig for the cutter according to claim 1, wherein: the upper side in front of the jig seat body is provided with a mounting groove, and the adjusting seat is adjustably mounted in the mounting groove.

5. The grinding jig for the cutting knife according to claim 1, wherein: the jig base comprises a jig base body and an adjusting base, and further comprises a cushion block, wherein the cushion block is arranged between the adjusting base and the jig base body.

6. A grinding method for a grinding jig of a cutter according to any one of claims 1 to 5, characterized in that: the method comprises the following steps:

s1: grinding the back surface of the cutter to be flat, and detecting the flatness of the back surface of the cutter by using a dial indicator;

s2: clamping the polishing jig on a moving platform of a grinding machine;

s3: tightly attaching the back of the cutter to the front of the jig seat body;

s4: the height of the gasket is adjusted through the adjusting seat, the front of the gasket is attached to the back of the cutter, the flatness of the ground surface of the cutter is detected through a dial indicator, and the cutter is locked on the jig seat body;