CN220279780U - Divide cutter group, cut device and battery processing equipment - Google Patents

Abstract

The application discloses a slitting knife group, slitting device and battery processing equipment. The slitting knife set comprises a first slitting knife assembly, a second slitting knife assembly and a compacting assembly; the first cutter assembly and the second cutter assembly are adjacently arranged, the first cutter assembly and the second cutter assembly can rotate, and the first cutter assembly in a rotating state and the second cutter assembly in a rotating state are mutually matched to cut the strip-shaped material; the compaction assembly comprises a compaction roller, a channel for the strip-shaped material is formed between the compaction roller and the second cutter assembly, and the compaction roller can be close to the second cutter assembly so as to compact the strip-shaped material.

Description

Divide cutter group, cut device and battery processing equipment

Technical Field

The application relates to the technical field of battery processing, and more particularly relates to a slitting knife set, a slitting device and battery processing equipment.

Background

In the prior art, two control modes of cutting speed of the strip-shaped material are mainly adopted, and the first mode is to respectively control the upper cutter linear speed, the lower cutter linear speed and the strip-shaped material moving speed by three motors. The second is that the upper knife and the lower knife are controlled by one motor, namely, the upper knife linear speed is the same as the lower knife linear speed, and the belt-shaped material linear speed is controlled by a single motor. The linear speed of the lower cutter cannot be guaranteed to be equal to the linear speed of the strip-shaped material in the two control modes, so that the lower cutter and the strip-shaped material can slide relatively during slitting, and the slitting quality is abnormal.

Disclosure of Invention

An object of the present application is to provide a new solution for a slitting knife set.

According to a first aspect of the present application, a slitting knife set is provided. The slitting knife set comprises a first slitting knife assembly, a second slitting knife assembly and a compacting assembly. The first cutter assembly and the second cutter assembly are adjacently arranged, the first cutter assembly and the second cutter assembly can rotate, and the first cutter assembly in a rotating state and the second cutter assembly in a rotating state are mutually matched to cut the strip-shaped material; the compaction assembly comprises a compaction roller, a channel for the strip-shaped material is formed between the compaction roller and the second cutter assembly, and the compaction roller can be close to the second cutter assembly so as to compact the strip-shaped material.

Optionally, the pinch roller is configured such that the strip material does not slip relative to the second cutter assembly.

Optionally, the compacting assembly further comprises a first driving device connected with the compacting roller, and the first driving device is configured to drive the compacting roller to be close to the second cutter assembly so as to compact the strip-shaped material.

Optionally, an anti-slip layer is provided on the outer surface of the pinch roller.

Optionally, a pressure sensing device is provided on the pinch roller.

According to a second aspect of the present application, a slitting device is provided. The slitting device comprises a slitting knife set as described above.

Optionally, the slitting device further comprises a material conveying device configured for conveying the strip-like material.

Optionally, a tension adjustment mechanism is provided between the material conveying device and the slitting knife set, the tension adjustment mechanism being configured for tensioning the strip-shaped material.

Optionally, the tension adjusting mechanism comprises a tension adjusting roller and a second driving device, wherein the second driving device is connected with the tension adjusting roller, and drives the tension adjusting roller to move along the thickness direction of the strip-shaped material.

Optionally, the tension adjusting roller is provided with a position sensor.

Optionally, when the tension of the strip-shaped material is smaller than or equal to a first pressure value and the tension adjusting roller reaches a first position, the conveying speed of the material conveying device is reduced, and the second driving device drives the tension adjusting roller to move so as to tension the strip-shaped material.

Optionally, when the tension of the strip-shaped material is greater than or equal to a second pressure value and the tension adjusting roller reaches a second position, the conveying speed of the material conveying device is increased, and the second driving device drives the tension adjusting roller to move so as to loosen the strip-shaped material.

According to a third aspect of the present application, a battery processing apparatus is provided. The battery processing apparatus includes the slitting device as described above.

In this application embodiment, the linear velocity of first cutter assembly is greater than the travel speed of banded material, makes the travel speed of banded material and the linear velocity of second cutter assembly keep unanimous through compressing tightly the subassembly to make banded material and second cutter assembly do not have relative movement, thereby guarantee that first cutter assembly initiatively cuts banded material, effectively improve the stability when banded material is cut.

In addition, the moving speed of the strip-shaped material is the same as the linear speed of the second cutter assembly, so that the strip-shaped material and the second cutter assembly are relatively static, the abrasion speed of the second cutter assembly is effectively reduced, and the service life of the cutter assembly is prolonged.

Other features of the present application and its advantages will become apparent from the following detailed description of exemplary embodiments of the present application, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description, serve to explain the principles of the application.

Fig. 1 is a schematic structural view of a cutter unit in an embodiment of the present application.

Figure 2 is a schematic view of the first cutter assembly, the second cutter assembly and the strip material in an embodiment of the present application.

Fig. 3 is a schematic structural view of a slitting device according to an embodiment of the application.

Fig. 4 is a schematic structural view of a cutter unit according to another embodiment of the present application.

Reference numerals illustrate:

1. a first cutter assembly; 101. an upper blade; 102. a spacer bush is arranged; 2. a second cutter assembly; 201. a lower spacer bush; 3. a strip material; 4. a compression assembly; 401. a pinch roller; 5. a material conveying device; 6. a tension adjusting mechanism; 601. a tension adjusting roller; 7. an unreeling mechanism; 8. a deviation correcting mechanism; 9. a driving mechanism; 901. a glue press roller; 902. a drive roll; 10. a flaw detection marking mechanism; 11. a winding mechanism; 12. a first backup roll; 13. and a second support roller.

Detailed Description

Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present application unless it is specifically stated otherwise.

The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the application, its application, or uses.

Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.

In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of exemplary embodiments may have different values.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

According to one embodiment of the present application, a slitting knife set is provided. The slitting knife set comprises a first slitting knife assembly 1, a second slitting knife assembly 2 and a compacting assembly 4. The first cutter assembly 1 and the second cutter assembly 2 are adjacently arranged, the first cutter assembly 1 and the second cutter assembly 2 can rotate, and the first cutter assembly 1 in a rotating state and the second cutter assembly 2 in a rotating state are mutually matched to cut the strip-shaped material 3. The compacting assembly 4 comprises a compacting roller 401, a channel of the strip-shaped material 3 is formed between the compacting roller 401 and the second cutter assembly 2, and the compacting roller 401 can be close to the second cutter assembly 2 so as to compact the strip-shaped material 3.

As shown in fig. 1 to 2, the slitting knife assembly is used for slitting a strip-like material 3. The slitting knife set comprises a first knife assembly 1 and a second knife assembly 2. The first cutter assembly 1 and the second cutter assembly 2 are juxtaposed in the thickness direction of the strip material 3, and the first cutter assembly 1 is parallel to the second cutter assembly 2.

Of course, the first cutter assembly 1 and the second cutter assembly 2 in the embodiment of the present application are not limited to the above-mentioned structure, and those skilled in the art can set the configurations according to actual needs. For example, the direction of travel of the strip material can be adjusted to be longitudinal by the transfer rotor, and the first cutter assembly 1 and the second cutter assembly 2 are arranged side by side in the thickness direction of the strip material 3.

Both the first cutter assembly 1 and the second cutter assembly 2 are rotatable. And the direction of rotation of the first cutter assembly 1 is opposite to the direction of rotation of the second cutter assembly 2. The strip-shaped material 3 to be slit is arranged between the first cutter assembly 1 and the second cutter assembly 2, and the first cutter assembly 1 and the second cutter assembly 2 are rotated to slit the strip-shaped material 3.

As shown in fig. 2, the linear velocity of the first cutter assembly 1 is V1. The linear velocity of the second cutter assembly 2 is V2. The moving speed of the belt-like material 3 is V3.

The linear velocity of the first cutter assembly 1 is greater than the moving velocity of the strip material 3 to ensure that the first cutter assembly 1 actively cuts the strip material 3 rather than being passively dragged by the strip material 3.

The movement speed of the strip material 3 is the same as the linear speed of the second cutter assembly 2 so that the strip material 3 is relatively stationary with respect to the second cutter assembly 2. The relative rest of the strip 3 and the second cutter assembly 2 is advantageous for stabilizing the strip 3 during shearing.

Moreover, since the second cutter assembly 2 and the strip-shaped material 3 do not move relatively, the abrasion speed of the second cutter assembly 2 is effectively reduced.

Of course, the first cutter assembly 1, the second cutter assembly 2 and/or the strip material 3 in the embodiment of the present application are not limited to the above-mentioned movement speed, and may be set according to actual needs by those skilled in the art. For example, the linear velocity of the first cutter assembly 1 and the second cutter assembly 2 is the same, and the moving velocity of the strip material 3 is the same as the linear velocity of the second cutter assembly 2.

The compressing component 4 is used for compressing the strip-shaped material 3, and ensures that the moving speed of the strip-shaped material 3 is the same as the speed of the second cutter component 2.

The pinch assembly 4 includes pinch rollers 401. A channel of strip material 3 is formed between the pinch roller 401 and the second cutter assembly 2. The strip 3 is slit by extending the strip 3 between the first cutter assembly 1 and the second cutter assembly 2. The pinch roller 401 has elasticity. The pinch roller 401 may be either near or remote from the second cutter assembly 2. As the pinch roller 401 approaches the second cutter assembly 2, the dimension of the channel of the strip 3 in the thickness direction of the strip 3 decreases. The strip material 3 is brought close to the second cutter assembly 2 by the pinch roller 401 approaching the second cutter assembly 2 to pinch the strip material 3. By means of the pinch roller 401, the strip-shaped material 3 and the second cutter assembly 2 are synchronously moved, so that the stability of the strip-shaped material 3 during slitting is improved, and the abrasion speed of the second cutter assembly 2 is reduced.

In this application embodiment, make the linear velocity of banded material 3 the same with the linear velocity of second cutter unit 2 through compressing tightly subassembly 4, the linear velocity of first cutter unit 1 is greater than the linear velocity of banded material 3 to guarantee that first cutter unit 1 initiatively cuts banded material 3, effectively improve the stability when banded material 3 is cut.

In addition, the moving speed of the strip-shaped material 3 is the same as the linear speed of the second cutter assembly 2, so that the strip-shaped material 3 and the second cutter assembly 2 are relatively static, the abrasion speed of the second cutter assembly 2 is effectively reduced, and the service life of the cutter assembly is prolonged.

In one example, the pinch roller 401 is configured such that the strip material 3 does not slip relative to the second cutter assembly 2.

As shown in fig. 1, a pinch roller 401 is used to pinch the strip-like material 3. The strip-shaped material 3 is close to the second cutter assembly 2 through the pinch roller 401, so that slippage is prevented from being generated relative to the second cutter assembly 2 in the moving process of the strip-shaped material 3, and the slitting effect of the strip-shaped material 3 is prevented from being influenced.

In one example, the compacting assembly 3 further comprises a first driving device, which is connected to the compacting roller 401. The first driving device is connected with the compaction roller 401, and the first driving device is configured to drive the compaction roller 401 to approach the second cutter assembly 2 so as to compact the strip-shaped material 3.

As shown in fig. 1, the first driving means of the pressing assembly 4 may be an air cylinder. The cylinder is connected with the pinch roller 401. The size of the channel of the strip-shaped material 3 in the thickness direction of the strip-shaped material 3 is regulated by the air cylinder. The compaction roller 401 is made to be close to the second cutter assembly 2 through the air cylinder, so that the compaction roller 401 compacts the strip-shaped material 3, and the strip-shaped material 3 is prevented from sliding relative to the second cutter assembly 2.

Of course, the first driving device in the embodiment of the present application is not limited to the above structure and function, and those skilled in the art may set the first driving device according to actual needs. For example, the first driving means may also be a rack and pinion engagement or the like, by which the pinch roller 401 is adjusted to be close to or far from the second cutter assembly 2. The pinch roller 401 is moved away from the second cutter assembly 2 by the first drive means to relax the strip material 3 and adjust the tension of the strip material 3.

In one example, the outer surface of the pinch roller 401 is provided with an anti-slip layer.

As shown in fig. 1, a pinch roller 401 is used to pinch the strip-like material 3. The outer surface of the pinch roller 401 is provided with an anti-slip layer. The anti-slip layer may be a rubber anti-slip layer.

By providing an anti-slip layer on the outer surface of the pinch roller 401, the friction between the pinch roller 401 and the strip-like material 3 can be increased. The pressing force of the pressing roller 401 and the strip-shaped material 3 is effectively improved, the strip-shaped material 3 is close to the second cutter assembly 2, and the conveying force of the strip-shaped material 3 is increased when the pressing roller 401 and the second cutter assembly 2 rotate.

Of course, the anti-slip layer in the embodiments of the present application is not limited to the above materials, and those skilled in the art may set the anti-slip layer according to actual needs. For example, a slip resistant material of silicone material.

In one example, a pressure sensing device is provided on the pinch roller 401.

As shown in fig. 1, the pinch roller 401 is used to pinch the strip material 3 so as to synchronize the strip material 3 with the second cutter assembly 2, thereby ensuring stability of the strip material 3 at the time of slitting and reducing the wear speed of the second cutter assembly 2.

A pressure sensing device is provided on the pinch roller 401, and can sense the pressure applied by the pinch roller 401 to the strip-like material 3. Not only can avoid the pinch roller 401 to push down too big range and cause the damage to the ribbon material 3, can also avoid pinch roller 401 to push down the range too big from the second cutter assembly 2, promptly pinch roller 401 and push down the range too little, lead to ribbon material 3 can not be close to second cutter assembly 2 to the linear velocity of messenger ribbon material 3 and second cutter assembly 2 is different, and ribbon material 3 that causes is unstable when cutting, influences ribbon material 3 and cuts the quality.

In one example, the first cutter assembly 1 comprises a fourth driving device and an upper blade 101, the fourth driving device being connected to the upper blade 101, the fourth driving device being configured to drive the upper blade 101 to slit the strip-shaped material 3.

As shown in fig. 4, the fourth driving means may drive the upper blade 101 to precisely adjust the position in the lateral or longitudinal direction. The fourth driving device is also capable of driving the upper blade 101 to rotate so as to slit the strip-shaped material 3.

In one example, the first cutter assembly 1 includes an upper spacer 102, an upper blade 101, and a spring ring, the spring ring is sleeved on the upper spacer 102, the upper blade 101 is sleeved on the spring ring, and the outer diameter of the upper blade 101 is larger than the outer diameter of the upper spacer 102.

As shown in fig. 1, the upper blade 101 is sleeved on the upper spacer 102. The outer surface of the upper spacer 102 is provided with a spring ring. The upper blade 101 abuts against the spring ring. When the first cutter assembly 1 rotates, the upper blade 101 cuts the strip material 3. The spring ring serves as a buffer to protect the upper blade 101.

The second cutter assembly 2 comprises a lower spacer 201 and a lower blade, the outer diameter of which is the same as the outer diameter of the lower spacer 201. As shown in fig. 1, the side wall of the upper blade 101 abuts against the side wall of the lower blade in the width direction of the strip-like material 3 to slit the strip-like material 3.

As shown in fig. 1 and 2, the lower blade is sleeved on the lower spacer 201. The side walls of the upper blade 101 are abutted against the side walls of the lower blade to slit the strip-like material 3.

The first cutter assembly 1 comprises a plurality of upper blades 101, and the second cutter assembly 2 comprises a plurality of lower blades, and the number of the upper blades 101 is the same as the number of the lower blades.

As shown in fig. 1 and 4, one or more upper blades 101 may be disposed on the first cutter assembly 1, according to actual needs. For example, if the strip material 3 needs to be divided into two, an upper blade 101 needs to be provided. If it is desired to divide the band-shaped material 3 into three, two upper blades 101 are provided.

The number of lower blades of the second cutter assembly 2 is identical to the number of upper blades 101, and the side wall of each lower blade abuts against the side wall of the upper blade 101 at the corresponding position.

According to another embodiment of the present application, a slitting device is provided. The slitting device comprises a slitting knife set as described above.

As shown in fig. 3, the above-described slitting knife set is suitable for the slitting device.

Of course, the splitting knife set in the embodiment of the present application is not limited to the above-mentioned apparatus and scenario, and those skilled in the art may set the splitting knife set according to actual needs. The slitting knife package is also suitable for use in devices for conveying material by extrusion rotation, for example.

In one example, the slitting device further comprises a material conveying device 5, which material conveying device 5 is configured for conveying the strip-shaped material 3.

As shown in fig. 3, the slitting device comprises a material conveying device 5. The strip-shaped material 3 is conveyed by the material conveying device 5. The fed strip material 3 passes through the strip material 3 channel between the first cutter assembly 1 and the second cutter assembly 2. The strip material 3 in the strip material 3 channel is pressed by the pressing roller 401 by the first driving means to bring the strip material 3 close to the second cutter assembly 2. The strip 3 moves in synchronism with the second cutter assembly 2. The first cutter assembly 1 has a greater speed than the second cutter assembly 2. The first cutter assembly 1 and the second cutter assembly 2 are rotated to slit the strip material 3.

In one example, a tension adjustment mechanism 6 is provided between the material conveying device 5 and the slitting knife set, which tension adjustment mechanism 6 is configured for tensioning the strip-shaped material 3.

As shown in fig. 3, a tension adjusting mechanism 6 is provided between the material conveying device 5 and the slitting knife set. The tension of the strip-shaped material 3 to be slit is adjusted by the tension adjusting mechanism 6.

When the band-shaped material 3 is too tight or too loose, it is not advantageous to maintain the stability of the band-shaped material 3 when slit. Therefore, by arranging the tension adjusting mechanism 6, the tension of the strip-shaped material 3 is adjusted, and the stability of the strip-shaped material 3 in slitting is effectively improved.

In one example, the tension adjusting mechanism 6 includes a tension adjusting roller 601, and the tension adjusting roller 601 moves in the thickness direction of the belt-like material 3.

As shown in fig. 3, the dancer mechanism 6 includes a dancer roller 601. The position of the dancer 601 is adjusted according to the tension of the strip 3. The tension of the belt-like material 3 is adjusted to move the tension adjusting roller 601 in the thickness direction. Thereby ensuring the degree of tension of the strip-like material 3.

For example, the dancer roller 601 has elasticity. When the tension of the belt-like material 3 increases, the tension adjusting roller 601 is pressed. The tension adjusting roller 601 has elasticity, and can absorb tension fluctuation of the strip-shaped material 3, so that the situation that the strip-shaped material 3 cannot be maintained to run due to too small tension is avoided.

Alternatively, when the tension of the belt-like material 3 is reduced, the tension adjusting roller 601 has elasticity, and the belt-like material 3 is held by the tension adjusting roller 601 to tension the belt-like material 3.

In one example, the tension adjusting mechanism 6 further includes a second driving device connected to the tension adjusting roller 601, and the second driving device drives the tension adjusting roller 601 to move in the thickness direction of the strip-shaped material 3.

As shown in fig. 3, the tension adjusting mechanism 6 includes a second driving device. The second driving means may be an elastic member. The elastic member is connected to the tension adjusting roller 601 to adjust the position of the tension adjusting roller 601 according to the tension of the strip material 3. The dancer roller 601 is moved in the thickness direction of the strip 3 by an elastic member. Thereby adjusting the degree of tensioning of the strip-shaped material 3.

Of course, the second driving device in the embodiment of the present application is not limited to the above-described structure, and those skilled in the art may set the second driving device according to actual needs. The second drive means may also be, for example, a cylinder.

In one example, the dancer 601 is provided with a position sensor.

As shown in fig. 3, the dancer roller 601 is provided with a position sensor. The position sensor is used to sense the position of the dancer 601.

For example, the dancer roller 601 has elasticity. The dancer 601 is set at a set value, for example, a zero point.

When the tension of the belt-like material 3 is too large, the tension of the tension adjusting roller 601 is increased. Or the tension of the band-shaped material 3 is too small and the pressure to the tension adjusting roller 601 is reduced. Therefore, when the tension of the belt-like material 3 is too large or too small, the position of the dancer roller 601 is changed.

If the position of the dancer 601 is offset by zero, the position sensor signals. The position of the tension adjusting roller 601 is adjusted by receiving the signal sent by the position sensor, so that the tension adjusting roller 601 returns to the zero point, the running of the slitting device is kept, and the slitting quality of the strip-shaped material 3 is ensured.

Of course, the second driving device in the embodiment of the present application is not limited to the above-described structure, and those skilled in the art may set the second driving device according to actual needs. For example, the position of the dancer roller 601 may be adjusted by a second driving device to bring the dancer roller 601 into a set position.

In one example, when the tension of the belt-like material 3 is less than or equal to the first pressure value, and when the dancer roller 601 reaches the first position, the conveying speed of the material conveying device 5 is reduced to tension the belt-like material 3.

As shown in fig. 3, the dancer roller 601 has elasticity. When the tension of the band-shaped material 3 is less than or equal to the first pressure value, and the dancer roller 601 reaches the first position. That is, when the belt-like material 3 is in a relaxed state and the position of the dancer roller 601 is higher than the maximum value of the set value, the position sensor sends out a signal to slow down the conveying speed of the material conveying device 5. By reducing the conveying speed of the material conveying device 5, the strip-shaped material 3 is tensioned. As the tension of the belt-like material 3 increases gradually, the dancer roller 601 approaches gradually to the position of the set value.

The strip-shaped material 3 is too loose, and when the strip-shaped material 3 is cut, the strip-shaped material 3 is poor in stability, and the cutting quality can be affected. By monitoring and adjusting the position of the tension adjusting roller 601, tension fluctuation of the strip-shaped material 3 in the slitting process is timely absorbed, and the situation that the strip-shaped material 3 cannot be maintained to run due to too small tension is avoided.

Of course, the dancer 601 in the embodiment of the present application is not limited to the above-described structure, and one skilled in the art may set it according to actual needs. For example, the dancer roller 601 may also be driven by a second driving device, so that the dancer roller 601 is raised to tension the belt-like material 3.

As shown in fig. 3, the first position is the maximum value in the thickness direction of the strip-like material 3.

The tension of the band-shaped material 3 is initially adjusted by the tension adjusting mechanism 6. When the tension of the belt-like material 3 is too small, further adjustment is made by adjusting the conveying speed of the material conveying device 5. The stability of the strip-shaped material 3 during slitting is guaranteed through double adjustment, and the slitting quality of the strip-shaped material 3 is effectively improved.

In one example, when the tension of the belt-like material 3 is greater than or equal to the second pressure value, and when the dancer roller 601 reaches the second position, the conveying speed of the material conveying device 5 is increased to relax the belt-like material 3.

As shown in fig. 3, the dancer roller 601 has elasticity. When the tension of the band-shaped material 3 is greater than or equal to the second pressure value, and the dancer roller 601 reaches the second position. That is, when the band-shaped material 3 is stretched and the position of the dancer roller 601 is lower than the minimum value of the set value, the position sensor sends out a signal to accelerate the conveying speed of the material conveying device 5. By increasing the conveying speed of the material conveying device 5, the strip-like material 3 is relaxed. As the tension of the belt-like material 3 gradually decreases, the dancer roller 601 gradually approaches the position of the set value.

The holding force against the strip-like material 3 by the dancer roller 601 is reduced to relax the strip-like material 3. The strip-shaped material 3 is too tight, so that the strip-shaped material 3 is easily broken due to the fact that the tension is too large, and the quality of the strip-shaped material 3 is affected. By means of the elastic dancer roller 601, a tensile break of the band-shaped mass 3 due to an excessive tensioning force can be effectively avoided.

Of course, the dancer 601 in the embodiment of the present application is not limited to the above-described structure, and one skilled in the art may set it according to actual needs. For example, the dancer roller 601 may also be driven by a second driving device, so that the dancer roller 601 is lowered to relax the belt-like material 3.

As shown in fig. 3, the second position is the minimum in the thickness direction of the strip-like material 3.

When the dancer roller 601 reaches the minimum position, the tension of the strip 3 is greater than or equal to the second pressure value. That is, the band-like material 3 is pressed against the dancer roller 601 in a tensed state. And when the dancer 601 reaches the lowest position, the strip 3 is still in tension. The output speed of the strip-shaped material 3 can be increased by increasing the conveying speed of the material conveying device 5. Under the condition that the speed of the slitting knife set is unchanged, the conveying speed of the material conveying device 5 is increased, and the tensioning force of the strip-shaped material 3 between the material conveying device 5 and the slitting knife set can be relieved.

The tension of the band-shaped material 3 is initially adjusted by the tension adjusting mechanism 6. When the tension of the belt-like material 3 is too small, further adjustment is made by adjusting the conveying speed of the material conveying device 5. The stretching fracture of the strip-shaped material 3 caused by overlarge tensioning force is avoided through double adjustment, and the slitting quality of the strip-shaped material 3 is ensured.

In one example, the material handling apparatus 5 further comprises an unwind mechanism 7, the unwind mechanism 7 having a closed-loop tension adjustment function. The unreeling mechanism 7 is configured for outputting the strip-like material 3.

As shown in fig. 3, the unreeling mechanism 7 is used for placing the strip-shaped material 3 in an uncut state. One end of the strip-shaped material 3 is output through the unreeling mechanism 7, one end of the strip-shaped material 3 output is in contact with the tension adjusting mechanism 6, and the tension of the strip-shaped material 3 in the conveying process is adjusted through the tension adjusting mechanism 6. One end of the strip material 3 which is output is contacted with the pressing assembly 4 and extends into the channel of the strip material 3. The strip material 3 is brought close to the second cutter assembly 2 by the hold down assembly 4. The strip material 3 is positioned between the first cutter assembly 1 and the second cutter assembly 2 by rotation of the pressing assembly 4 and the second cutter assembly 2. The strip-shaped material 3 is slit by the rotation of the first cutter assembly 1, the rotation of the second cutter assembly 2 and the movement of the strip-shaped material 3.

The closed-loop tension control function, that is to say the unwinding mechanism 7 has the function of detecting the tension of the strip-shaped material 3. When the tension of the strip-shaped material 3 exceeds the set range, the unreeling mechanism 7 can slow down the output speed of the strip-shaped material 3 through the tension closed-loop adjusting function so that the strip-shaped material 3 is in the set range.

In one example, the material conveying apparatus 5 further includes a deviation rectifying mechanism 8, where the deviation rectifying mechanism 8 is disposed between the unreeling mechanism 7 and the tension adjusting mechanism 6, and the deviation rectifying mechanism 8 is configured to adjust the position of the strip-shaped material 3.

As shown in fig. 3, the deviation rectifying mechanism 8 is provided between the unreeling mechanism 7 and the tension adjusting mechanism 6. The position of the strip-shaped material 3 can be adjusted through the deviation correcting mechanism 8, so that the influence on the slitting quality of the strip-shaped material 3 due to the position deviation during slitting of the strip-shaped material 3 is avoided.

In one example, the material handling device 5 further comprises a drive mechanism 9, the drive mechanism 9 being located between the unreeling mechanism 7 and the tensioning mechanism 6. The driving mechanism 9 comprises a third driving device, a driving roller 902 and a glue pressing roller 901, wherein a channel of the strip-shaped material 3 is formed between the glue pressing roller 901 and the driving roller 902. The third driving means is configured to drive the glue roller 901 close to the drive roller 902 to press the band-shaped material 3.

As shown in fig. 3, the unreeling mechanism 7 outputs the strip-like material 3. The driving mechanism 9 provides driving force to the strip material 3. The third driving device drives the glue roll 901 so as to press the band-shaped material 3 onto the driving roll 902 through the glue roll 901, the band-shaped material 3 and the driving roll 902 are moved synchronously by means of friction, and the driving roll 902 is driven by the third driving device alone. The driving mechanism 9 can also function as a tension break, i.e. the tension of the strip-shaped material 3 on the side of the driving mechanism 9 close to the unreeling mechanism 7 and on the side close to the tension adjusting mechanism 6 can be set to different values.

The third driving means may be a motor or a cylinder or the like.

In one example, the slitting device further comprises a flaw detection marking mechanism 10, the flaw detection marking mechanism 10 is disposed on a side of the slitting knife set away from the material conveying device 5, and the flaw detection marking mechanism 10 is configured to detect the quality of the slit strip material 3 and mark a flaw of the strip material 3.

As shown in fig. 3, the defect detecting and marking mechanism 10 is configured to detect surface defects of the cut strip material 3, such as coating falling, surface foreign matters, pits, and abnormal sizes, etc., where the surface defects of the strip material 3 are generally detected by a CCD, and when a certain area is determined to be a defect, marking is performed on the corresponding area, so that the mark is marked for the production personnel or subsequent equipment to identify and reject.

In one example, the slitting device further comprises a winding mechanism 11, and the winding mechanism 11 has a tension closed-loop adjusting function. The winding mechanism 11 is arranged on one side of the slitting knife set, which is away from the material conveying device 5, and the winding mechanism 11 is configured to wind the slit strip-shaped material 3.

As shown in fig. 3, the winding mechanism 11 mainly collects the slit strip-shaped material 3 into a roll, so that the subsequent process is convenient to develop. The winding mechanism 11 has a tension closed-loop adjusting function, namely, the winding shaft can detect the tension of the strip-shaped material 3, and when the tension of the strip-shaped material 3 exceeds a set range, the winding shaft can adjust the tension value of the strip-shaped material 3 in a closed-loop manner by adjusting the winding speed, so that the tension of the strip-shaped material 3 is in the set range.

The slitting device comprises a first support roller 12, a plurality of which support rollers 12 are arranged between the material conveying device 5 and the tensioning mechanism 6, the plurality of support rollers being configured for tensioning the strip-shaped material 3.

The slitting device comprises a second support roller 13, a plurality of which second support rollers 13 are arranged between the tension adjusting mechanism 6 and the winding mechanism 11, the plurality of second support rollers 13 being configured for tensioning the band-shaped material 3.

According to yet another embodiment of the present application, a battery processing apparatus is provided. The battery processing apparatus includes the slitting device as described above.

The slitting device is suitable for battery processing equipment. The strip 3 may be a pole piece. And cutting the pole piece by a cutting knife group.

Of course, in the embodiment of the present application, the slitting device is not limited to the above-mentioned devices and scenes, and those skilled in the art can set the slitting device according to actual needs. For example, the slitting device can also be used in paper slitting equipment and the like.

Example 1:

a certain negative electrode plate of the lithium battery is selected, and the parameters of the electrode plate are shown in table 1. Use two rolls of the same pole pieces to carry out cutting verification, collect the difference of conventional cutting machine and this application's cutting device respectively, the difference of cutting quality is mainly to dividing the powder and cutting the terminal surface burr.

TABLE 1 band material parameter information

The parameters of the slitting knife set used in this embodiment are shown in table 2, and compared with the conventional slitting machine, the second cutter assembly of the slitting device of the present application has an additional assembly of the glue pressing roller 901, and a tension adjusting mechanism 6 is added between the driving mechanism 9 and the slitting knife set.

Table 2 parameters of the splitting knife set

The cutting knife sets are respectively installed according to the parameters of table 2, the parameters of the cutting devices are set, the pole pieces to be cut are respectively placed into a conventional cutting machine and a cutting device placement reel of the application, after a cutting experiment is started, the quality of the pole pieces cut by the two cutting devices is measured off-line every 100 meters, the quality is recorded in a table, and the experimental result is shown in table 3.

Table 3 summary of experimental results

From experimental results, the slitting device has obvious advantages in the aspect of slitting quality control, wherein the number and the size of burrs on the end face are obviously improved, and the number and the size of slitting powder are also obviously improved.

The foregoing embodiments mainly describe differences between the embodiments, and as long as there is no contradiction between different optimization features of the embodiments, the embodiments may be combined to form a better embodiment, and in consideration of brevity of line text, no further description is given here.

Although specific embodiments of the present application have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present application. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the present application. The scope of the application is defined by the appended claims.

Claims (14)

1. A slitting knife set comprising:

the cutter comprises a first cutter assembly (1) and a second cutter assembly (2), wherein the first cutter assembly (1) and the second cutter assembly (2) are adjacently arranged, the first cutter assembly (1) and the second cutter assembly (2) can rotate, and the first cutter assembly (1) in a rotating state and the second cutter assembly (2) in a rotating state are mutually matched to cut a strip-shaped material (3); and

the pressing assembly (4), the pressing assembly (4) comprises a pressing roller (401), a channel of the strip-shaped material (3) is formed between the pressing roller (401) and the second cutter assembly (2), and the pressing roller (401) can be close to the second cutter assembly (2) so as to press the strip-shaped material (3).

2. The slitting knife set according to claim 1, wherein the pinch roller (401) is configured to keep the strip-like material (3) from slipping relative to the second knife assembly (2).

3. The slitting knife set according to claim 1, wherein the compression assembly (4) further comprises a first drive means connected to the compression roller (401), the first drive means being configured to drive the compression roller (401) close to the second knife assembly (2) for compressing the strip-shaped material (3).

4. The slitting knife set according to claim 1, wherein the outer surface of the pinch roller (401) is provided with an anti-slip layer.

5. Slitting knife set according to claim 1, characterized in that pressure sensing means are provided on the pinch roller (401).

6. A slitting device comprising a slitting blade set according to any one of claims 1 to 5.

7. The slitting apparatus according to claim 6, further comprising a material conveying device (5), the material conveying device (5) being configured for conveying the strip-shaped material (3).

8. Slitting apparatus according to claim 7, characterized in that a tension adjusting mechanism (6) is provided between the material conveying device (5) and the slitting knife set, the tension adjusting mechanism (6) being configured for tensioning a strip-shaped material (3).

9. A slitting apparatus according to claim 8, wherein the tensioning means (6) comprises a tensioning roller (601), the tensioning roller (601) being movable in the thickness direction of the band-shaped material (3).

10. The slitting apparatus according to claim 9, wherein the tensioning mechanism (6) further comprises a second driving device connected to the tensioning roller (601), the second driving device driving the tensioning roller (601) to move in the thickness direction of the band-shaped material (3).

11. Slitting apparatus according to claim 9, wherein the dancer roller (601) is provided with a position sensor.

12. A slitting apparatus according to claim 10, wherein the conveying speed of the material conveying device (5) is reduced to tension the band-shaped material (3) when the tensioning force of the band-shaped material (3) is smaller than or equal to the first pressure value and the dancer roller (601) reaches the first position.

13. A slitting apparatus according to claim 10, wherein the conveying speed of the material conveying device (5) is increased to relax the band-shaped material (3) when the tensioning force of the band-shaped material (3) is greater than or equal to the second pressure value and the dancer roller (601) reaches the second position.

14. Battery processing apparatus comprising a slitting device according to any one of claims 6 to 13.