WO2023142658A1

WO2023142658A1 - Electrode sheet compounding and cutting machine and electrode sheet compounding and cutting method

Info

Publication number: WO2023142658A1
Application number: PCT/CN2022/135533
Authority: WO
Inventors: 燕峰伟; 杨栋华; 梁亨健
Original assignee: 广东利元亨智能装备股份有限公司
Priority date: 2022-01-28
Filing date: 2022-11-30
Publication date: 2023-08-03
Also published as: CN114497680B; CN114497680A

Abstract

The present application provides an electrode sheet compounding and cutting machine and an electrode sheet compounding and cutting method. The electrode sheet compounding and cutting machine comprises a compounding device, a relaying device, and a cutting device. The compounding device is used for forming a material tape. The relaying device is located at the downstream of the compounding device, and comprises a first temporary storage module and a second temporary storage module which are sequentially arranged. The first temporary storage module is used for releasing or temporarily storing the material tape. The second temporary storage module is used for temporarily storing the material tape when the first temporary storage module is used for releasing the material tape. The second temporary storage module is used for releasing the material tape when the first temporary storage module is used for temporarily storing the material tape. The cutting device is located at the downstream of the relaying device, and comprises a cutting module. The cutting module is used for cutting off the material tape. The first temporary storage module temporarily stores the material tape conveyed from the upstream by means of a temporary storage action. The second temporary storage module actively releases the material tape to the downstream. When the second temporary storage module is switched from releasing the material tape to temporarily storing the material tape, the cutting device cuts off the material tape when the material tape is stationary. The electrode sheet compounding and cutting machine can improve the machining speed and the cutting quality of the material tape.

Description

A pole piece composite cutting machine and a pole piece composite cutting method

technical field

The application relates to the field of pole piece production, in particular to a pole piece composite cutting machine and a pole piece composite cutting method.

Background technique

In the stacking process of the battery cell, the positive pole piece and the negative pole piece are separated by a diaphragm. In the current process, the pole piece is sent between two layers of diaphragms to form a strip, and then the strip is cut to obtain a compound with a diaphragm on both sides. The pole piece, and finally the composite pole piece of the positive electrode and the composite pole piece of the negative electrode are stacked together to form a battery cell.

At present, it is necessary to start and stop repeatedly during the conveying process of the material belt. When the material belt stops conveying, the material belt located at the cutting station is cut off, and after cutting, the material belt is conveyed again to send a new section of material belt to the cutting station, and the above steps are repeated to remove the material. Strips are cut for composite pole pieces.

This repeated start-stop conveying method makes the processing speed slow and the efficiency low, and the material belt is affected by the force of the upstream structure during the conveying process, which is prone to problems such as slipping, tension changes, material belt arching, etc., resulting in positioning accuracy Reduced, affecting the cutting quality of the strip.

Contents of the invention

This application aims to solve at least one of the technical problems existing in the prior art. For this reason, the present application proposes a pole piece compound cutting machine and a pole piece compound cutting method. The pole piece compound cutting machine can improve the cutting quality of the strip.

The pole piece composite cutting machine provided according to the application includes a composite device, a relay device and a cutting device, the composite device is used to composite the pole piece and the separator to form a strip, and the relay device is located at the composite device Downstream of the conveying path, the relay device includes a first buffer module and a second buffer module arranged in sequence, the first buffer module is used for releasing or buffering the strip, and the second buffer module is used for The first buffer module buffers the material tape when releasing the material tape, the second buffer module is used to release the material tape when the first buffer module buffers the material tape, and the cutting device is located at Downstream of the conveying path of the relay device, the cutting device includes a cutting module for cutting the material tape.

According to the pole piece composite cutting machine provided by the present application, at least it has the following technical effects: the first buffer module buffers the material tape sent from the upstream through the buffer action, the second buffer module actively releases the material tape downstream, and the material tape located downstream of the relay device The cutting device does not need to overcome the force of the composite device on the material belt when receiving the material belt, nor does it need to provide tension for the material belt upstream of the relay device, thereby improving the quality of the material belt conveying, and the pole piece composite cutting machine can To improve the cutting quality of the material tape, the composite device continuously sends out the material tape, and when the second buffer module switches from releasing the material tape to buffering the material tape, the material tape downstream of the relay device is in a temporary static state, and the cutting device is on the material tape The strip is cut off at a standstill, which increases the processing speed of the strip.

According to some embodiments of the present application, the relay device includes a plurality of passing rollers, the first buffer module includes a first buffer roller, the first buffer roller is located between two passing rollers, and the first buffer module The second buffer module includes a second buffer roller, and the second buffer roller is located between the two passing rollers.

According to some embodiments of the present application, the passing roller includes a driving roller, the relay device includes a pinch roller, the pinching roller is arranged opposite to the driving roller, and the pinching roller and the driving roller space for passing the strip.

According to some embodiments of the present application, the relay device includes a guide piece, the guide piece is arranged opposite to the passing roller, and the gap between the guide piece and the passing roller is used to pass through the material belt, so The guide piece is used to smooth the material strip.

According to some embodiments of the present application, the cutting module includes a base unit and a cutter unit, the cutter unit includes a cutter and a cutter mounting member, at least two of the cutter units are installed at intervals along the first direction On the base unit, the cutter is mounted on the cutter mount, the cutting module can move along the second direction so that the cutter cuts the strip, and the two cutters The knife unit can be relatively close or far away.

According to some embodiments of the present application, the base unit includes a first slide seat extending along the first direction, the cutter unit includes a first slide table, and the first slide table Installed on the first slide.

According to some embodiments of the present application, the base unit includes a second sliding seat, a second sliding table and an adapter plate, the second sliding seat extends along a third direction, and the second sliding table is installed on the On the second sliding seat, the adapter plate is installed on the second sliding platform, the two first sliding seats are installed on the adapter plate, and the second sliding platform can move along the second The slide moves to bring the cutter closer to or further away from the strip.

According to some embodiments of the present application, the cutter unit includes a third sliding seat and a third sliding table, the third sliding seat is installed on the first sliding table, and the third sliding seat Extending in three directions, the third sliding table is installed on the third sliding seat, the cutter installation part is installed on the third sliding table, the cutting module includes a first elastic member, and the first An elastic member is used for exerting force on the cutter installation member toward the direction of the material strip.

According to some embodiments of the present application, the cutter mounting part includes a smoothing assembly, and the smoothing assembly includes a second elastic member and a pressing member, and the two pressing members are respectively located on both sides of the cutter , the second elastic member is used to press the pressing member to the material strip,

According to some embodiments of the present application, the smoothing assembly further includes a top block and a cutter slider, the top block is located on the side of the cutter mounting part away from the cutter, and the second elastic member is installed Between the cutter slider and the top block, the pressing member includes a cutter roller, and the cutter roller is rotatably mounted on an end of the cutter slider away from the top block.

According to some embodiments of the present application, the base unit includes a first base, a second base and a deviation correction component, the deviation correction component is installed on the first base, and the second base is installed on the On the deviation correction assembly, the second sliding seat is installed on the second base, the deviation correction assembly includes a direct drive motor and/or a deviation correction platform, the direct drive motor is used for angle correction, and the deviation correction platform is used for Position correction in the first direction or the second direction.

According to the pole piece composite cutting method provided in the present application, using the pole piece composite cutting machine provided in the present application, the pole piece composite cutting method includes the following steps:

The composite device composites the pole piece and the diaphragm to form a strip, and the composite device sends the strip to the relay device;

The first buffering module releases and buffers the material tape alternately, the second buffering module buffers the material tape when the first buffering module releases the material tape, and the second buffering module The module releases the material tape when the first buffer module buffers the material tape, and the relay device sends the material tape to the cutting device;

When the second buffer module switches from releasing the material tape to storing the material tape, the cutting device cuts off the material tape.

According to the pole piece composite cutting method provided by the present application, at least the following technical effects are achieved: the second buffer module actively releases the material tape downstream, and the cutting device located downstream of the relay device does not need to overcome the material alignment of the composite device when receiving the material tape. The force of the belt does not need to provide tension for the upstream material belt, thereby improving the quality of material belt conveying and the accuracy of cutting. When the material belt is switched, the material belt downstream of the relay device is in a temporary static state, and the cutting device cuts off the material belt when the material belt is stationary, thereby improving the processing speed of the material belt.

Description of drawings

The above and/or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, wherein:

Fig. 1 is a schematic side view of a pole piece composite cutting machine according to an embodiment of the present application;

Fig. 2 is a schematic perspective view of a relay device according to an embodiment of the present application;

FIG. 3 is a schematic front view of a relay device according to an embodiment of the present application;

Fig. 4 is a partial enlarged view of area A in Fig. 3;

Fig. 5 is an axonometric schematic view of the cutting module installed on the frame in the cutting device of the embodiment of the present application;

Fig. 6 is a schematic axonometric view of the cutting module of the embodiment of the present application;

Fig. 7 is a schematic axonometric view of another angle of the cutting module of the embodiment of the present application;

Fig. 8 is an axonometric schematic view of the cutter unit of the embodiment of the present application;

Fig. 9 is a schematic axonometric view of area B in Fig. 6;

Fig. 10 is a schematic axonometric view of area C in Fig. 7;

Fig. 11 is a schematic cross-sectional view of the cutter mounting part of the embodiment of the present application.

Reference signs:

Roller 110, guide sheet 130, fourth driver 140, pinch roller 150,

The first buffer roller 210, the first single-axis manipulator 220, the first driver 230,

The second buffer roller 310, the second single-axis manipulator 320, the second driver 330,

Cutter mounting part 410, second elastic part 411, pressing part 412, top block 413, cutter slider 414, cutter slide seat 415, connecting shaft 416, cutter 420, first slide table 430, third slide platform 450, first elastic member installation part 460, limiter 470,

The first slide 510, the second slide 520, the second slide 530, the adapter plate 540, the first base 560, the second base 570, the deviation correction assembly 580,

Adjusting knob 610, locking knob 620, pressing plate 630, first elastic member 640,

Relay frame 710, relay mounting plate 720, cutting frame 730, cutting guide rail 740,

Composite device 810, relay device 820, cutting device 830,

Tape 900.

Detailed ways

Embodiments of the present application are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary, are only for explaining the present application, and should not be construed as limiting the present application.

In the description of the present application, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc. indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only In order to facilitate the description of the application and simplify the description, it does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the application.

In the description of the present application, several means one or more, and multiple means two or more. Greater than, less than, exceeding, etc. are understood as not including the original number, and above, below, within, etc. are understood as including the original number. If the description of the first and second is only for the purpose of distinguishing the technical features, it cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features relation.

In the description of this application, unless otherwise clearly defined, words such as setting, installation, and connection should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in this application in combination with the specific content of the technical solution.

The pole piece composite cutting machine provided according to this application includes a composite device 810, a relay device 820 and a cutting device 830. The composite device 810 is used to composite the pole piece and the diaphragm to form a strip 900. The relay device 820 is located in the composite device 810. Downstream of the conveying path, the relay device 820 includes a first buffer module and a second buffer module arranged in sequence, the first buffer module is used to release or buffer the material belt 900, and the second buffer module is used to release the material belt 900 in the first buffer module. The belt 900 buffers the material belt 900, and the second buffer module is used to release the material belt 900 when the first buffer module buffers the material belt 900. The cutting device 830 is located downstream of the conveying path of the relay device 820. The cutting device 830 includes a cutting device. The cutting module is used to cut off the material tape 900 .

It can be understood that the production of battery cells needs to go through multiple processes, so the material tape 900 will be in contact with various structures during transportation, and these structures will exert force on the material tape 900. In order to ensure the normal transportation of the material tape 900 , the force exerted by the downstream conveying structure on the material belt 900 needs to overcome the resultant force of the forces exerted by the upstream various structures on the material belt 900, and at the same time, the force exerted by the downstream conveying structure on the material belt 900 also needs to be the entire length of the material belt 900 provides tension.

For example, in the process of composite cutting of pole pieces, the strip 900 needs to be composited and formed first, and then transported downstream for cutting to form composite pole pieces.

With the prolongation of the conveying distance of the material belt 900, the length of the material belt 900 will also increase, and the structures that exert force on the material belt 900 will also increase. The tension requirement and the resultant force of overcoming the forces exerted by various upstream structures on the material belt 900 .

On the one hand, since the resultant force of various structures on the material belt 900 may fluctuate, it is difficult for the downstream conveying structure to accurately achieve force balance, and with the extension of the conveying distance, the demand for tension increases, and the downstream The output performance requirements of conveying structures are also constantly increasing. This makes quality problems such as insufficient tension of the material belt 900 and arching of the material belt 900 likely to occur in the downstream material belt 900 , resulting in poor cutting quality of the material belt 900 .

On the other hand, since the material belt 900 needs to be relatively stationary with the cutting module during cutting, the material belt 900 needs to be started and stopped repeatedly during the conveying process, which reduces the conveying speed and positioning accuracy of the material belt 900, and also causes the material belt 900 to cropping quality deteriorates.

According to the pole piece composite cutting machine provided in the present application, the processing speed and cutting quality of the strip 900 can be improved.

Specifically, on the one hand, the first buffering module buffers the material tape 900 sent upstream through the buffering action. When the first buffering module buffers the material tape 900, the second buffering module actively releases the material tape 900 downstream. A buffer module receives the material tape 900 from the upstream, and what the second buffer module releases is the material tape 900 that has been buffered in the relay device 820 before, so the material tape 900 released by the relay device 820 is the same as the material tape 900 released by the relay device 820 from the upstream. The received material strips 900 are isolated from each other under force, and the cutting device 830 does not need to overcome the active force of the composite device 810 on the material strips 900 when receiving the material strips 900, nor does it need to provide the material strips 900 upstream of the relay device 820. The tension helps to improve the conveying accuracy of the material belt 900, thereby improving the cutting quality.

On the other hand, the composite device 810 continuously sends out the material tape 900, and when the second buffer module is switched from the release material tape 900 to the buffer material tape 900, the material tape 900 downstream of the relay device 820 is in a temporary static state, and the cutting device 830 The strip 900 is cut while the strip is at rest. The material belt 900 does not need to be started and stopped repeatedly, which avoids the positioning error generated when it is started and stopped repeatedly, thereby improving the processing speed and cutting quality of the material belt 900 .

The first caching module and the second caching module can realize caching and releasing functions in various ways.

According to some embodiments of the present application, the relay device 820 includes a plurality of passing rollers 110, the first buffering module includes a first buffering roller 210, and the first buffering roller 210 is located between the two passing rollers 110, and the second buffering module includes a first buffering roller 210. Two buffer rollers 310 , the second buffer roller 310 is located between the two passing rollers 110 . The first buffer roller 210 can approach or move away from the passing roller 110 to release or buffer the material tape 900 , and the second buffer roller 310 can approach or move away from the passing roller 110 to release or buffer the material tape 900 .

At this time, the first buffering module realizes buffering and releasing through the linear reciprocating motion of the first buffering roller 210 , and the second buffering module realizes buffering and releasing through the linear reciprocating motion of the second buffering roller 310 .

In some embodiments, the first buffer module includes a first guide rail and a first slider, the first slider is installed on the first guide rail, the first buffer roller 210 is installed on the first slider, and the second buffer module includes a first Two guide rails and a second slider, the second slider is installed on the second guide rail, and the second buffer roller 310 is installed on the second slider. The first guide rail and the second guide rail can ensure smooth movement of the first buffer roller 210 and the second buffer roller 310 .

In some other embodiments, the first cache module includes a first single-axis manipulator 220, the first cache roller 210 is installed on the first single-axis manipulator 220, the second cache module includes a second single-axis manipulator 320, and the second cache roller 310 is installed on the second single-axis manipulator 320 .

In some embodiments, the first buffer module includes a first driver 230, the first driver 230 is connected to the first single-axis manipulator 220 by transmission, and the first driver 230 is used to drive the first buffer roller 210 to move along the first single-axis manipulator 220, The second buffer module includes a second driver 330 , the second driver 330 is connected to the second single-axis manipulator 320 by transmission, and the second driver 330 is used to drive the second buffer roller 310 to move along the second single-axis manipulator 320 . At this time, the first single-axis manipulator 220 and the second single-axis manipulator 320 do not have the driving ability themselves, and are driven by the first driver 230 and the second driver 330 , and the first driver 230 and the second driver 330 can use air cylinders.

Of course, in some other embodiments, the first driver 230 and the second driver 330 can also use linear motors, or the first driver 230 and the second driver 330 can use rotary motors, and the rotation of the rotary motors is converted by the screw slider mechanism. is the linear motion of the first buffer roller 210 and the second buffer roller 310 .

Referring to Fig. 2, the relay device 820 includes a relay frame 710 and a relay mounting plate 720, the relay mounting plate 720 is installed on the relay frame 710, and the roller 110, the first buffer module and the second buffer module are installed on Relay mounting plate 720. The relay device 820 arranges three passing rollers 110 in a horizontal array, the first buffer roller 210 is located between the first two passing rollers 110, the second buffer roller 310 is located between the last two passing rollers 110, and the first buffer roller 210 is located on the second passing roller 110. A driver 230 moves vertically to buffer or release the material tape 900 , and the second buffer roller 310 moves vertically under the action of the second driver 330 to buffer or release the material tape 900 .

It can be understood that, in some other embodiments, the buffering and releasing of the first buffer roller 210 and the second buffer roller 310 may also be achieved by swinging. At this time, the first buffer roller 210 and the second buffer roller 310 may be driven to move by a driving structure such as a rotating motor or a cam.

For example, in some embodiments, the first buffer module includes a swing rod. The swing rod is connected to the rotating motor through a linkage mechanism. The rotating motor can drive the swing rod to swing back and forth within a certain angle range. The first buffer roller 210 is installed on the swing rod. On the rod, the axis of the first buffer roller 210 is parallel to the rotation axis of the swing rod, and the first buffer roller 210 can approach or move away from the passing roller 110 reciprocatingly with the swing of the swing rod; the second buffer module includes a swing rod, and the second buffer roller 310 is installed on the swing rod, and can reciprocally approach or move away from the passing roller 110 with the swing of the swing rod.

In summary, the first buffer module can realize buffering and release through the linear reciprocating motion or reciprocating swing of the first buffering roller 210, and the second buffering module can realize buffering and releasing through the linear reciprocating motion or reciprocating swing of the second buffering roller 310. .

In some embodiments, the first buffer module includes a first compensator, and the first compensator is used to counteract the gravity of the first buffer roller 210, thereby making the movement of the first buffer roller 210 smoother, and the second buffer module includes a second compensator The second compensator is used to offset the gravity of the second buffer roller 310, so that the movement of the second buffer roller 310 is smoother.

Taking the embodiment of FIG. 2 as an example, during the upward stroke, the first buffer roller 210 needs to overcome gravity, so the power output by the first driver 230 to the first buffer roller 210 is greater than that of the first driver 230 to the first buffer roller when descending at the same speed. The output power of the roller 210 leads to a large difference in the output power of the first driver 230 in the ascending stroke and the descending stroke. Setting the first compensator can overcome this problem, and at the same time most of the energy output by the first driver 230 can be converted into The kinetic energy of the first buffer roller 210 makes the movement of the first buffer roller 210 faster.

The first compensator and the second compensator can use air cylinders or counterweights. Taking the first compensator as an example, when using a cylinder, the output shaft of the cylinder is connected to the first buffer roller 210, and the cylinder exerts an upward thrust on the first buffer roller 210, thereby counteracting gravity; when using a counterweight, the counterweight passes through the rope The first buffer roller 210 is connected, and the counterweight exerts an upward pulling force on the first buffer roller 210 to counteract the gravity. In addition, when the counterweight is used as the first compensator, elastic members such as springs may also be provided between the counterweight and the first buffer roller 210 for buffering.

According to some embodiments of the present application, the passing roller 110 includes a driving roller. The relay device 820 may include a third driver, the third driver is in transmission connection with the driving roller, and the third driver can drive the driving roller to rotate. Specifically, the passing roller 110 located downstream of the second buffer module can be set as a driving roller, so that the material tape 900 released by the second buffer module can be sent out in time.

In some embodiments, the relay device 820 includes a pinch roller 150 , the pinch roller 150 is arranged opposite to the driving roller, and the material belt 900 is passed between the pinch roller 150 and the driving roller. The pressure roller 150 is used to press the material belt 900 to the driving roller, and the pressure roller 150 makes the material belt 900 and the driving roller closely contact, so that the material belt 900 and the driving roller are not easy to slip. The relay device 820 may include a fourth driver 140 capable of driving the pinch roller 150 to press against the driving roller. The fourth driver 140 may employ an air cylinder.

According to some embodiments of the present application, the relay device 820 includes a guide piece 130, and the guide piece 130 is arranged opposite to the passing roller 110. Flat tape 900. For example, referring to FIG. 3 and FIG. 4 , the guide sheet 130 is arranged opposite to the driving roller, the guide sheet 130 is located below the driving roller, and the material belt 900 passes between the guide sheet 130 and the driving roller and is transported downstream. The guide piece 130 can smooth out the wrinkles on the material belt 900 or the bending of the tabs on the material belt 900 , so as to improve the conveying quality of the material belt 900 .

According to some embodiments of the present application, the cutting module includes a base unit and a cutter unit, the cutter unit includes a cutter 420 and a cutter mounting part 410, and at least two cutter units are installed on the base unit at intervals along the first direction. Above, the cutter 420 is installed on the cutter mounting part 410 , and the cutting module can move along the second direction so that the cutter 420 cuts off the strip 900 . The cutter unit cuts the strip 900 to form a pole piece, and the two cutters 420 respectively cut one side of the pole piece, thereby cutting out one pole piece at a time, which speeds up the cutting efficiency of the pole piece. When more cutting knives 420 are arranged in the cutting module, the cutting module can cut out multiple pole pieces at a time. In some embodiments, the two cutter units can be relatively close to or far away from each other, so as to meet the cutting requirements of pole pieces with different width specifications.

It can be understood that, in actual use, the first direction is substantially parallel to the conveying direction of the material tape 900 , and the second direction is substantially parallel to the width direction of the material tape 900 . The cutter 420 can be a rolling cutter. Referring to FIG. 8 , the cutter 420 can roll along its own axis. When the cutting module moves along the width direction of the tape, the cutter 420 presses on the tape 900 and rolls, thereby The strip 900 on the moving path of the cutter 420 is cut off. The rolling cutter can effectively reduce the frictional resistance when the cutter 420 is in contact with the material strip 900 . Of course, the cutting knife 420 can also be a non-rollable cutting knife, and the present application can use cutting knives 420 of different specifications and types for cutting. In some examples, the base unit includes a first slide 510 extending along a first direction, the cutter unit includes a first slide 430 mounted on the first slide 510, The distance adjustment of the two cutter units is realized by moving along the first sliding seat 510 .

In some embodiments, the cutting module includes an adjustment knob 610, the adjustment knob 610 is installed on the first sliding seat 510, the adjustment knob 610 is connected to the first sliding table 430 by transmission, and the adjusting knob 610 is used to drive the first sliding table 430 to move along the first sliding table 430. A slide 510 moves. The adjusting knob 610 can specifically drive the first sliding table 430 to move through transmission means such as a screw mechanism, a rack and pinion mechanism, and a worm gear mechanism. The cutting module also includes a locking knob 620 for fixing the first slide 430 .

For example, with reference to Fig. 10, the adjustment assembly includes a pressing plate 630, the pressing plate 630 is installed on the first sliding seat 510, and the locking knob 620 is installed on the first sliding table 430, and the locking knob 620 can press the pressing plate 630 to fix the first sliding table 430.

Alternatively, the adjusting knob 610 can also be installed on the first slide 430 ; the locking knob 620 can also be installed on the first slide 510 .

According to some embodiments of the present application, the base unit includes a second slide 520, a second slide 530 and an adapter plate 540, the second slide 520 extends along the third direction, and the second slide 530 is installed on the second slide On the seat 520, the adapter plate 540 is installed on the second slide 530, and the two first slides 510 are installed on the adapter plate 540, and the second slide 530 can move along the second slide 520 so that the cutter 420 Close to or away from the strip 900 . By driving the second sliding table 530 to move the cutter 420 to press the material belt 900 to cut, the adapter plate 540 can ensure that the two cutters 420 approach or move away from the material belt 900 synchronously, improving the cutting effect.

In some embodiments, the base unit includes a cam, which is connected to the adapter plate 540 through transmission, and the cam is used to drive the second slide 530 to move along the second slide 520 . The cam makes the cutter 420 press against the material belt 900 during cutting, and at the same time avoids the material belt after the cutting is completed. Using the cam to drive can make the movement of the cutter 420 more accurate, and avoid the response lag that may occur when using a motor drive .

According to some embodiments of the present application, the cutter unit includes a third slide and a third slide 450, the third slide is installed on the first slide 430, the third slide extends along a third direction, and the third slide 450 is installed on the third sliding seat, and the cutter mounting part 410 is installed on the third sliding platform 450 .

It can be understood that since the thickness of each position of the material strip 900 is not completely consistent, when the cutter 420 is too close to or too far away from the material strip 900, the force of the cutter 420 on the material strip 900 will exceed or fall below the design range, affect the cutting effect, and may even cause accidental collision between the cutter 420 and the structure of the carrier material belt 900. At this time, the third sliding table 450 can take the cutter 420 away from or approach the material belt 900 to compensate, thereby controlling the force at Appropriate range.

In some embodiments, this technical effect is achieved through the first elastic member 640 , and the first elastic member 640 is used to exert a force on the cutter mounting member 410 in the direction of the strip 900 . The resultant force of the gravity of structures such as the cutter 420, the cutter mounting part 410, the third slide table 450 and the active force of the first elastic member 640 tends to make the cutter 420 press to the material belt 900, when the resultant force is equal to the material belt 900 cutting When the active force of the knife 420, the cutter 420 can normally cut, when the active force of the material tape 900 to the cutter 420 is greater than the resultant force, the cutter 420 can overcome the active force of the first elastic member 640 and stay away from the material tape 900, When the force exerted by the material tape 900 on the cutter 420 is less than the resultant force, the force of the first elastic member 640 makes the cutter 420 approach the material tape 900 until the force balance of the cutter 420 is achieved again.

For example, referring to FIG. 9 , the cutting module includes a first elastic member 640, the first elastic member 640 adopts a compression spring, and the first sliding table 430 is equipped with a first elastic member installation part 460, and the first elastic member installation part 460 is located at the cutter installation. The first elastic member 640 is located between the first elastic member installation member 460 and the cutter installation member 410 on the side of the member 410 away from the material tape.

Of course, the first elastic member 640 can also use a tension spring. At this time, the first elastic member installation part 460 is located at the side of the cutter installation part 410 close to the strip, and the first elastic member 640 exerts a force towards the cutting knife 420 towards the direction of the strip 900. pull.

The cutting module also includes a limiter 470, which limits the travel of the third slide 450 on the third slide, preventing the third slide 450 from being separated from the third slide. For example, also referring to Fig. 9, a limiting member 470 is installed on the cutter mounting part 410, and the limiting member 470 forms a limiting groove, and the first elastic member mounting part 460 is formed with a limiting protrusion inserted into the limiting groove, and the limiting groove is connected to the limiting groove. The limit protrusion interacts to limit the stroke.

The material strip 900 may have local ups and downs during transport, and if there are ups and downs near the cutting route of the cutter 420, the quality of the edge trimming may be affected. According to some embodiments of the present application, the cutter mounting part 410 includes a smoothing assembly, and the smoothing assembly includes a second elastic member 411 and a pressing member 412, and the two pressing members 412 are respectively located on both sides of the cutting knife 420, and the second The elastic member 411 is used to press the pressing member 412 to the material strip 900 . The pressing member 412 can pressurize the strips 900 on both sides of the cutting route, thereby flattening the undulating strips 900 to ensure that the strips 900 in contact with the cutter 420 are in a flat state, which helps to improve the cutting quality. The second elastic member 411 can prevent the pressing member 412 from exerting excessive force on the material tape 900 .

In some embodiments, the smoothing assembly includes a top block 413 and a cutter slider 414, the top block 413 is located on the side of the cutter mounting part 410 away from the cutter 420, and the second elastic member 411 is installed on the cutter slider 414 and the cutter slider 414. Between the top blocks 413 , the pressing member 412 includes a cutter roller, which is rotatably mounted on the end of the cutter slider 414 away from the top block 413 . The cutter roller can roll on the material belt 900 , so the friction between the smoothing assembly and the material belt 900 can be reduced.

Referring to FIG. 11 , the cutter mounting part 410 includes a cutter slide 415 , and the cutter slide 415 is provided with an installation channel along the third direction, and the cutter slide 414 is inserted in the installation channel. The top block 413 is installed on the cutter slide seat 415, and the top block 413 is located at the opening at one end of the installation passage. A bearing is installed on the end of the cutter slide block 414 away from the top block 413, and the cutter roller is installed on the bearing. Cutter mounting part 410 also comprises connecting shaft 416, and connecting shaft 416 is installed on the cutter slide seat 415, and connecting shaft 416 is positioned at the opening of the other end of installation channel and connecting shaft 416 is inserted in the cutter roller, and cutter 420 installs On the connecting shaft 416 the cutter 420 is located between two cutter rollers. The elastic force of the pressure spring drives the cutter roller to press against the material belt 900. When the pressure of the cutter roller on the material belt 900 is too large, the reaction force of the material belt 900 makes the compression spring contract, so that the cutter roller is retracted and the cutter is lowered. The pressure of the rollers on the strip 900.

According to some embodiments of the present application, the base unit includes a first base 560 for installation of the cutting module. For example, with reference to Fig. 5, the cutting device 830 includes a cutting frame 730, and a cutting guide rail 740 is installed on the cutting frame 730, and the cutting module is installed on the cutting guide rail 740 and can move along the cutting guide rail 740 to complete the material. Cutting action with 900. The cutting device 830 can arrange a plurality of cutting guide rails 740 at intervals along the conveying direction of the material strip 900 , so as to cut a plurality of pole pieces at a time, meeting the requirement of higher speed material strip cutting.

In some embodiments, the base unit further includes a second base 570 and a deviation correction assembly 580, the deviation correction assembly 580 is installed on the first base 560, the second base 570 is installed on the deviation correction assembly 580, and the second sliding seat 520 Installed on the second base 570, the deviation correction assembly includes a direct drive motor and/or a deviation correction platform, the direct drive motor is used for angle correction, and the deviation correction platform is used for position correction in the first direction or the second direction. The deviation correcting assembly 580 can adjust the position of the cutter 420 according to an external control signal, so that the cutter 420 can complete the cutting of the strip 900 more accurately. The direct drive motor and the correction table can adopt the existing technology.

According to some embodiments of the present application, the composite device 810 includes a pole piece feeding module, a diaphragm unwinding module, a diaphragm composite module, and a roller feeding module. The pole piece feeding module and the diaphragm unwinding module are located upstream of the diaphragm composite module, and the roller feeding module is located at Downstream of the diaphragm compounding module, the roller feeding module is used to convey the material strip 900 downstream.

The composite device 810 composites the pole piece and the separator to form a strip 900, and the composite device 810 sends the strip 900 to the relay device 820;

The first buffer module releases the material tape 900 and the buffer material tape 900 alternately, the second buffer module buffers the material tape 900 when the first buffer module releases the material tape 900, and the second buffer module releases the material tape 900 when the first buffer module buffers the material tape 900 Material tape 900, the relay device 820 sends the material tape 900 to the cutting device 830;

When the second buffer module is switched from the release material tape 900 to the buffer material tape 900 , the cutting device 830 cuts off the material tape 900 .

According to the pole piece composite cutting method provided in this application, the second buffer module actively releases the material strip 900 downstream, and the cutting device 830 located downstream of the relay device 820 does not need to overcome the composite device 810 when receiving the material strip 900. 900 force, and there is no need to provide tension for the upstream material belt 900, thereby improving the quality of the material belt 900 conveyed, improving the accuracy of cutting, the compound device 810 continuously sends out the material belt 900, and the second buffer module is released by the When the material belt 900 is switched to the buffer material belt 900, the material belt 900 downstream of the relay device 820 is in a temporary static state, and the cutting device 830 cuts the material belt 900 when the material belt is stationary, thereby increasing the processing speed of the material belt 900.

The pole piece composite cutting machine and the pole piece composite cutting method provided according to the present application will be described in detail below with reference to FIG. 1 to FIG. 11 in a specific embodiment. It should be understood that the following description is only an illustration rather than a specific limitation to the invention.

Referring to FIG. 1 , the pole piece composite cutting machine includes a composite device 810 , a relay device 820 and a cutting device 830 arranged in sequence.

Composite device 810 is used to compound pole piece and diaphragm to form strip 900. Composite device 810 includes pole piece feeding module, diaphragm unwinding module, diaphragm composite module and roller feeding module, pole piece feeding module and diaphragm unwinding module are located in diaphragm composite Upstream of the module, the roller feed module is located downstream of the diaphragm compounding module, and the roll feed module is used to transport the material strip 900 downstream.

The relay device 820 is located downstream of the composite device 810. Referring to FIG. 2 and FIG. 3, the relay device 820 includes a relay frame 710, a relay installation plate 720, a first buffer module, a second buffer module and three passing rollers. The relay installation board 720 is installed on the relay frame 710 , and the passing roller 110 , the first buffer module and the second buffer module are installed on the relay installation board 720 . Three passing rollers 110 are arranged in a horizontal array. The first buffer roller 210 is located between the first and the second passing roller 110 , and the second buffer roller 310 is located between the second and the third passing roller 110 .

The first buffer module includes a first buffer roller 210 , a first single-axis manipulator 220 and a first driver 230 . The first single-axis manipulator 220 extends vertically. The first buffer roller 210 is installed on the first single-axis manipulator 220. The first driver 230 is connected to the first single-axis manipulator 220. The first driver 230 is used to drive the first buffer. The roller 210 moves along a first single-axis robot 220 .

The second buffer module includes a second buffer roller 310 , a second single-axis manipulator 320 , and a second driver 330 . The second single-axis manipulator 320 extends vertically, the second buffer roller 310 is installed on the second single-axis manipulator 320, the second driver 330 is transmission-connected to the second single-axis manipulator 320, and the second driver 330 is used to drive the second buffer The roller 310 moves along the second single-axis robot 320 .

The moving speeds of the first buffer roller 210 and the second buffer roller 310 are equal in size and opposite in direction. The second buffer module is used to buffer the material tape 900 when the first buffer module releases the material tape 900. The buffer module releases the material tape 900 when buffering the material tape 900 .

Referring to FIG. 4 , the relay device 820 includes a third driver, which is in transmission connection with the third passing roller 110 , and the third driver is used to drive the passing roller 110 to rotate to send out the material tape 900 . The relay device 820 also includes a fourth driver 140 and a pinch roller 150, the pinch roller 150 is arranged opposite to the third passing roller 110, and the material belt 900 passes between the pinching roller 150 and the third passing roller 110, The fourth driver 140 is used to drive the pinch roller 150 to press against the third passing roller 110 .

The relay device 820 includes a guide piece 130, the guide piece 130 is arranged opposite to the third passing roller 110, and the material belt 900 passes between the guide piece 130 and the third passing roller 110, and the guide piece 130 is used to smooth the material belt 900.

The cutting device 830 is located at the downstream of the relay device 820. Referring to FIG. Above, the cutting module is installed on the cutting guide rail 740 , and the cutting module is used to cut off the strip 900 .

6 and 7, the cutting module includes a cutter unit and a base unit.

The cutter unit includes a cutter mounting part 410 , a cutter 420 , a first sliding platform 430 , a third sliding seat, a third sliding platform 450 , a first elastic member mounting part 460 and a limiting part 470 .

The third sliding seat is installed on the first sliding table 430, the third sliding seat extends along the third direction, the third sliding table 450 is installed on the third sliding seat, and the cutter mounting part 410 is installed on the third sliding table 450, The cutter 420 is mounted on the cutter mount 410 . The cutter 420 is a rolling cutter.

The cutter mounting part 410 includes a second elastic member 411 , a pressing member 412 , a top block 413 , a cutter slider 414 , a cutter slider 415 and a connecting shaft 416 .

Referring to FIG. 11 , the cutter slider 415 is provided with an installation channel along the third direction, and the cutter slider 414 is inserted in the installation channel. The top block 413 is installed on the cutter slide seat 415, and the top block 413 is located at the opening at one end of the installation passage. A bearing is installed on the end of the cutter slide block 414 away from the top block 413, and the cutter roller is installed on the bearing. The connecting shaft 416 is installed on the cutter slide seat 415, the connecting shaft 416 is positioned at the opening at the other end of the installation passage and the connecting shaft 416 is inserted in the cutter roller, the cutter 420 is installed on the connecting shaft 416, and the cutter 420 is positioned at the two sides. between the cutter rollers.

8 and 9, the first slide 430 is equipped with a first elastic member installation 460, the first elastic member installation 460 is located above the cutter installation 410, the cutting module includes a first elastic member 640, the first The elastic member 640 is located between the first elastic member installation member 460 and the cutter installation member 410 , the first elastic member 640 is a compression spring, and the first elastic member 640 is used to exert a force on the cutter 420 in the direction of the strip. The limiting part 470 is installed on the cutter mounting part 410, the limiting part 470 forms a limiting groove, the first elastic member mounting part 460 is formed with a limiting protrusion inserted into the limiting groove, and the limiting groove and the limiting protrusion are connected to each other. The function realizes the restriction on the stroke.

The base unit includes a first slide 510 , a second slide 520 , a second slide 530 , an adapter plate 540 , a cam, a first base 560 , a second base 570 and a deviation correction assembly 580 .

The first base 560 is installed on the cutting guide rail 740, the deviation correction assembly 580 is installed on the first base 560, and the second base 570 is installed on the deviation correction assembly 580. The deviation correction assembly includes a direct drive motor and/or a deviation correction platform, directly The driving motor is used for angle deviation correction, and the deviation correction table is used for position deviation correction in the first direction and the second direction.

The second sliding seat 520 is installed on the second base 570, the second sliding seat 520 extends along the third direction, the second sliding table 530 is installed on the second sliding seat 520, and the adapter plate 540 is installed on the second sliding table 530 Above, two first sliding seats 510 are installed on the adapter plate 540 , the first sliding seats 510 extend along the first direction, and the first sliding platform 430 is installed on the first sliding seats 510 . The cam drive is connected to the adapter plate 540 , the cam is used to drive the second sliding platform 530 to move along the second sliding seat 520 , and the base unit is used to move along the second direction so that the cutter 420 cuts off the strip.

The cutting module also includes an adjusting knob 610 , a locking knob 620 and a pressing plate 630 .

Referring to FIG. 10 , the adjusting knob 610 is mounted on the first sliding seat 510 , and the adjusting knob 610 is transmission-connected to the first sliding table 430 , and the adjusting knob 610 is used to drive the first sliding table 430 to move along the first sliding seat 510 . The pressing plate 630 is installed on the first sliding seat 510 , the locking knob 620 is installed on the first sliding table 430 , and the locking knob 620 can press the pressing plate 630 to fix the first sliding table 430 .

The pole piece composite cutting machine adopts the following pole piece composite cutting method:

The composite device 810 composites the pole piece and the diaphragm to form the strip 900, and the composite device 810 continuously sends the strip 900 to the relay device 820;

According to the pole piece composite cutting machine and the pole piece composite cutting method according to the embodiment of the present application, the second buffer module actively releases the material tape 900 downstream, and the cutting device 830 located downstream of the relay device 820 does not receive the material tape 900 It is necessary to overcome the force of the composite device 810 on the material belt 900, and it is not necessary to provide tension for the upstream material belt 900, thereby improving the quality of the material belt 900 and improving the accuracy of cutting. The composite device 810 continuously sends out the material belt 900, when the second buffer module is switched from the release material belt 900 to the buffer material belt 900, the material belt 900 downstream of the relay device 820 is in a temporary static state, and the cutting device 830 cuts off the material belt 900 when the material belt is stationary, thereby being able to Increase the processing speed of the strip 900.

In the description of this specification, references to the terms "one embodiment," "some embodiments," "exemplary embodiments," "example," "specific examples," or "some examples" are intended to mean that the implementation A specific feature, structure, material, or characteristic described by an embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present application. The scope of the application is defined by the claims and their equivalents.

Claims

A pole piece composite cutting machine is characterized in that it comprises:

a compounding device for compounding pole pieces and diaphragms to form strips;

A relay device, the relay device is located downstream of the conveying path of the composite device, the relay device includes a first buffer module and a second buffer module arranged in sequence, and the first buffer module is used for releasing or buffering The material tape, the second buffer module is used to buffer the material tape when the first buffer module releases the material tape, and the second buffer module is used to buffer the material tape when the first buffer module releases the material tape. releasing the tape while releasing the tape;

A cutting device, the cutting device is located downstream of the conveying path of the relay device, the cutting device includes a cutting module, and the cutting module is used to cut off the material tape.
The pole piece compound cutting machine according to claim 1, characterized in that: the relay device includes a plurality of passing rollers, the first buffer module includes a first buffer roller, and the first buffer roller is located between two Between the passing rollers, the second buffering module includes a second buffering roller, and the second buffering roller is located between the two passing rollers.
The pole piece compound cutting machine according to claim 2, characterized in that: the passing roller includes a driving roller, and the relay device includes a pinch roller, and the pinching roller is arranged opposite to the driving roller, so between the pinch roller and the driving roller for passing the material belt.
The pole piece composite cutting machine according to claim 3, characterized in that: the relay device includes a guide piece, the guide piece is arranged opposite to the passing roller, and there is a gap between the guide piece and the passing roller. Used to pass through the material belt, and the guide piece is used to smooth the material belt.
The pole piece compound cutting machine according to claim 1, characterized in that: the cutting module includes a base unit and a cutter unit, and the cutter unit includes a cutter and a cutter mount, at least two of which are The cutter unit is installed on the base unit at intervals along the first direction, the cutter is installed on the cutter mounting part, and the cutting module can move along the second direction to make the cutter cut The material strip and the two cutter units can be relatively close to or far away from each other.
The pole piece compound cutting machine according to claim 5, characterized in that: the base unit includes a first sliding seat, the first sliding seat extends along the first direction, and the cutter unit includes a second A sliding platform, the first sliding platform is installed on the first sliding seat.
The pole piece composite cutting machine according to claim 6, wherein the base unit comprises a second slide, a second slide and an adapter plate, the second slide extends along a third direction, The second sliding table is installed on the second sliding seat, the adapter plate is installed on the second sliding table, the two first sliding seats are installed on the adapter plate, the The second sliding platform can move along the second sliding seat to make the cutting knife approach or move away from the material strip.
The pole piece compound cutting machine according to claim 7, characterized in that: the cutter unit includes a third slide and a third slide, the third slide is installed on the first slide, The third sliding seat extends along the third direction, the third sliding table is installed on the third sliding seat, the cutter mounting part is installed on the third sliding table, the cutting The module includes a first elastic member, and the first elastic member is used for exerting force on the cutter installation member toward the direction of the material strip.
The pole piece composite cutting machine according to claim 5, characterized in that: the cutter installation part includes a smoothing assembly, and the smoothing assembly includes a second elastic part and a pressure applying part, and the two pressing parts Parts are respectively located on both sides of the cutter, and the second elastic part is used to make the pressing part press against the strip.
The pole piece compound cutting machine according to claim 9, characterized in that: the smoothing assembly further includes a top block and a cutter slider, and the top block is located at the side of the cutter installation part away from the cutter On one side, the second elastic member is installed between the cutter slider and the top block, and the pressing member includes a cutter roller, and the cutter roller is rotatably installed on the cutter slider end of the block away from the top block.
The pole piece composite cutting machine according to claim 6, wherein the base unit includes a first base, a second base and a deviation correction assembly, and the deviation correction assembly is installed on the first base , the second base is installed on the deviation correction assembly, the second sliding seat is installed on the second base, the deviation correction assembly includes a direct drive motor and/or a deviation correction platform, and the direct drive motor For angle deviation correction, the deviation correction table is used for position deviation correction in the first direction or the second direction.
A pole piece composite cutting method, characterized in that: the pole piece composite cutting method uses the pole piece composite cutting machine according to any one of claims 1 to 11, and the pole piece composite cutting method comprises the following steps:

The composite device composites the pole piece and the diaphragm to form a strip, and the composite device sends the strip to the relay device;

The first buffering module releases and buffers the material tape alternately, the second buffering module buffers the material tape when the first buffering module releases the material tape, and the second buffering module The module releases the material tape when the first buffer module buffers the material tape, and the relay device sends the material tape to the cutting device;

When the second buffer module switches from releasing the material tape to storing the material tape, the cutting device cuts off the material tape.