CN115990642B - Die cutting method, electronic equipment and die cutting equipment - Google Patents
Die cutting method, electronic equipment and die cutting equipment Download PDFInfo
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- CN115990642B CN115990642B CN202310281415.XA CN202310281415A CN115990642B CN 115990642 B CN115990642 B CN 115990642B CN 202310281415 A CN202310281415 A CN 202310281415A CN 115990642 B CN115990642 B CN 115990642B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The application relates to a die cutting method, electronic equipment and die cutting equipment, and belongs to the field of batteries. The die cutting method is applied to die cutting equipment and comprises the following steps: detecting whether a tape connecting position reaches a fixed cutting position or not, wherein the tape connecting position is a position at which a new pole piece coiled material and a previous pole piece coiled material in die cutting equipment are connected; when the tape connecting position reaches a fixed cutting position, the die cutting equipment is controlled to cut the new pole piece coiled material from the tape connecting position again by the length of the pole piece coiled material of one battery cell. The control method can automatically detect whether the tape connecting position reaches the fixed cutting position, automatically control the die cutting equipment to cut when the tape connecting position reaches the fixed cutting position, so as to improve the condition that whether the tape connecting position passes through the laser cutting position or not is observed manually, the situation that the tape connecting position exceeds the laser cutting position easily occurs, the material is wasted, and the tape feeding is not required to be stopped, thereby improving the production efficiency.
Description
Technical Field
The application belongs to the field of batteries, and particularly relates to a die cutting method, electronic equipment and die cutting equipment.
Background
With the development of various electronic devices, the use of batteries is wider and wider, the requirements of the batteries are larger and larger, and the flexible package ion batteries are rapidly popularized due to the light weight and small size of the flexible package ion batteries.
The die cutting equipment is an automatic equipment for producing flexible package ion batteries, and mainly comprises an unreeling mechanism, a tape receiving mechanism, a stamping mechanism, a reeling mechanism, a control system and the like. After the die cutting equipment in the related art is stopped and reel-changing (the pole piece coiled material is coiled material for manufacturing an electric core) tape-receiving is completed, the machine is stopped firstly, then a staff manually operates the tape-feeding, the tape-receiving position of the pole piece coiled material passes through the laser cutting position of the stamping mechanism, and then the master switch is manually reset to start the die cutting equipment, so that the die cutting equipment starts cutting from the tape-receiving position. Because whether the tape splicing position passes through the laser cutting position is observed manually, the situation that the tape splicing position exceeds the laser cutting position easily occurs, material waste is caused, the time spent is more, and the production efficiency is lower.
Disclosure of Invention
In view of the above, an object of the present application is to provide a die cutting method, an electronic device and a die cutting device, so as to solve the problems that the current die cutting method is easy to cause material waste and has low production efficiency.
Embodiments of the present application are implemented as follows:
in a first aspect, an embodiment of the present application provides a die cutting method applied to a die cutting device, where the method includes: detecting whether a tape connecting position reaches a fixed cutting position or not, wherein the tape connecting position is a position at which a new pole piece coiled material and a previous pole piece coiled material in die cutting equipment are connected; and when the tape connecting position reaches the fixed cutting position, controlling the die cutting equipment to cut the new pole piece coiled material from the tape connecting position again by the length of the pole piece coiled material of one battery cell.
In this application embodiment, this control method can automatic check connect the area position and reach fixed cutting position, wait to connect the area position and reach fixed cutting position, automatic control cross cutting equipment cuts to improve the manual observation and connect the area position and pass through laser cutting position, appear connecting the area position easily and surpass the condition of laser cutting position, cause the material extravagant, and need not to shut down the tape feed, thereby can improve production efficiency.
With reference to a possible implementation manner of the embodiment of the first aspect, before the tape splicing position reaches the fixed cutting position, the method further includes: if the length of the coiled material from the tape connecting position to the fixed cutting position is not less than the remaining length of the coiled material of the pole piece required by the last unfinished battery cell before tape connecting, continuing to cut the coiled material of the previous pole piece so that the length of the coiled material of the pole piece of the last unfinished battery cell meets the length of the coiled material of the pole piece required by forming the complete battery cell; and stopping cutting when the length of the coiled material to be cut is equal to the residual length until the tape connecting position reaches the fixed cutting position.
In this embodiment of the application, through detecting the coiled material length that connects the area position to fixed cutting position, if coiled material length is not less than the surplus length that connects the required pole piece coiled material of the last outstanding electric core before taking, then can continue to cut preceding pole piece coiled material to make the pole piece coiled material length of last outstanding electric core satisfy the required pole piece coiled material length that forms complete electric core, when waiting to cut coiled material length equal surplus length, just stop cutting, just follow the area position of connecing on new pole piece coiled material after reaching fixed cutting position, again with the pole piece coiled material length of an electric core and cut. In this way, the waste of the pole piece coiled material, including the part from the tape connecting position to the coiled material length of the fixed cutting position, and the material waste of the part including the coiled material length of the pole piece of the last unfinished battery cell after cutting, can be reduced better.
With reference to a possible implementation manner of the first aspect embodiment, the method further includes: and stopping cutting before the tape receiving position does not reach the fixed cutting position when the length of the coiled material from the tape receiving position to the fixed cutting position is smaller than the residual length.
In this application embodiment, through detecting the coiled material length of connecing area position to fixed cutting position, if connect when the coiled material length of area position to fixed cutting position is less than surplus length, before connecing the area position and not reaching fixed cutting position, stop cutting, both can reduce equipment wearing and tearing like this, also can accelerate production efficiency because of reducing unnecessary cutting.
With reference to a possible implementation manner of the embodiment of the first aspect, detecting whether the tape-joining position of the pole piece coiled material reaches the fixed cutting position includes: acquiring the moving length of the tape splicing position relative to a tape splicing mechanism in the die cutting equipment; detecting whether the taping position reaches the fixed cutting position based on the moving length and a preset length; the preset length is the length from the tape connecting mechanism in the die cutting equipment to the fixed cutting position of the pole piece coiled material; and if the moving length is equal to the preset length, representing that the tape connecting position reaches the fixed cutting position.
In the embodiment of the application, whether the tape splicing position reaches the fixed cutting position or not can be accurately and rapidly detected by acquiring the moving length of the tape splicing position relative to the tape splicing mechanism in the die cutting equipment and based on the moving length and the preset length (which is a certain value). For example, if the movement length is equal to the preset length, the characterization taping position reaches the fixed cutting position, and if the movement length is less than the preset length, the characterization taping position does not reach the fixed cutting position.
With reference to a possible implementation manner of the first aspect embodiment, obtaining a moving length of the tape splicing position relative to a tape splicing mechanism in the die cutting device includes: obtaining the moving length according to the running time of the die cutting equipment and the moving speed of the pole piece coiled material; or obtaining the moving length according to the rotation number of the rotating roller in the die cutting equipment and the length corresponding to each rotation of the rotating roller, wherein the rotating roller is used for driving the pole piece coiled material to move.
In this embodiment of the present application, the moving length of the tape splicing position relative to the tape splicing mechanism in the die cutting device may be obtained quickly according to the running time of the die cutting device and the moving speed of the pole piece coiled material, for example, moving length=running time. Or, according to the number of rotations of the rotating roller and the length corresponding to one rotation of the rotating roller in the die cutting device, the moving length can be accurately obtained, for example, the moving length=the number of rotations×the length corresponding to one rotation.
In a second aspect, embodiments of the present application further provide a die cutting method applied to a die cutting device, where the method includes: acquiring the length of a coiled material from a tape connecting position to a fixed cutting position, wherein the tape connecting position is a position at which a new pole piece coiled material and a previous pole piece coiled material in die cutting equipment are connected; if the length of the coiled material is not less than the residual length of the coiled material of the pole piece required by the last unfinished electric core before the tape connection, continuously cutting the coiled material of the previous pole piece so that the length of the coiled material of the pole piece of the last unfinished electric core meets the length of the coiled material of the pole piece required by forming the complete electric core; and stopping cutting when the length of the coiled material to be cut is equal to the residual length until the tape connecting position reaches the fixed cutting position.
With reference to a possible implementation manner of the second aspect embodiment, after the capturing the web length from the taping position to the fixed cutting position, the method further includes: and stopping cutting before the tape receiving position does not reach the fixed cutting position when the length of the coiled material from the tape receiving position to the fixed cutting position is smaller than the residual length.
With reference to one possible implementation manner of the second aspect embodiment, obtaining the web length from the tape receiving position to the fixed cutting position includes: acquiring the moving length of the tape splicing position relative to a tape splicing mechanism in the die cutting equipment; based on the moving length and the preset length, obtaining the coiled material length from the tape receiving position to the fixed cutting position; the preset length is the length from the tape connecting mechanism in the die cutting equipment to the fixed cutting position of the pole piece coiled material.
In a third aspect, an embodiment of the present application further provides an electronic device, including: the device comprises a memory and a processor, wherein the processor is connected with the memory; the memory is used for storing programs; the processor is configured to invoke a program stored in the memory to perform the method provided by the embodiment of the first aspect and/or any possible implementation manner of the embodiment of the first aspect, or to perform the method provided by the embodiment of the second aspect and/or any possible implementation manner of the embodiment of the second aspect.
In a fourth aspect, embodiments of the present application further provide a die cutting apparatus, including: the device comprises a stamping mechanism, a tape connecting mechanism and a controller; the tape splicing mechanism is used for finishing tape splicing work of the new pole piece coiled material and the former pole piece coiled material; the controller is used for detecting whether the tape connecting position reaches a fixed cutting position or not, and the tape connecting position is a position where the new pole piece coiled material is connected with the previous pole piece coiled material; and when the tape connecting position reaches the fixed cutting position, controlling the stamping mechanism to cut the new pole piece coiled material by the length of the pole piece coiled material of one battery cell from the tape connecting position.
In a fifth aspect, embodiments of the present application further provide a die cutting apparatus, including: the device comprises a stamping mechanism, a tape connecting mechanism and a controller; the tape splicing mechanism is used for finishing tape splicing work of the new pole piece coiled material and the former pole piece coiled material; the controller is used for acquiring the length of the coiled material from the tape connecting position to the fixed cutting position, wherein the tape connecting position is the position where the new coiled material of the pole piece is connected with the coiled material of the previous pole piece, and if the length of the coiled material is not less than the residual length of the coiled material of the pole piece required by the last unfinished electric core before tape connection, the stamping mechanism is controlled to continuously cut the coiled material of the previous pole piece so that the length of the coiled material of the pole piece of the last unfinished electric core meets the length of the coiled material of the pole piece required by forming the complete electric core; and when the length of the coiled material to be cut is equal to the residual length, controlling the stamping mechanism to stop cutting until the tape connecting position reaches the fixed cutting position.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art. The above and other objects, features and advantages of the present application will become more apparent from the accompanying drawings. Like reference numerals refer to like parts throughout the several views of the drawings. The drawings are not intended to be drawn to scale, with emphasis instead being placed upon illustrating the principles of the present application.
Fig. 1 shows a simplified schematic diagram of a die cutting device according to an embodiment of the present application.
Fig. 2 shows a schematic control principle of a die cutting device according to an embodiment of the present application.
Fig. 3 shows a schematic flow chart of a die cutting method according to an embodiment of the present application.
Fig. 4 shows a schematic flow chart of a die cutting method according to an embodiment of the present application.
Fig. 5 shows a block diagram of an electronic device according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.
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 definition or explanation thereof is necessary in the following figures. Also, relational terms such as "first," "second," and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Furthermore, the term "and/or" in this application is merely an association relation describing an association object, and indicates that three relations may exist, for example, a and/or B may indicate: a exists alone, A and B exist together, and B exists alone.
Currently, the more widely the battery is used in view of the development of market situation. The battery is not only applied to energy storage power supply systems such as hydraulic power, firepower, wind power and solar power stations, but also widely applied to electric vehicles such as electric bicycles, electric motorcycles, electric automobiles, and the like, as well as a plurality of fields such as military equipment, aerospace, and the like. With the continuous expansion of the application field of the power battery, the market demand of the power battery is also continuously expanding.
The flexible package ion battery is rapidly popularized due to light weight and small size, and the winding flexible package ion battery in the flexible package ion battery is used as a main stream product and is produced and used in a large scale. The coiled flexible package ion battery is formed by sealing a battery unit by adopting an aluminum-plastic composite film. The battery unit is formed by winding a diaphragm, a positive plate and a negative plate, wherein the diaphragm separates the positive plate from the negative plate. In the production process, the pole piece coiled material can be cut through die cutting equipment to form corresponding pole lugs, then the cut pole piece is coiled to form coiled materials which are used as battery core coiling materials, and finally, when the battery core is coiled, the cut pole piece coiled materials are installed on corresponding coiling equipment and then coiled to form the battery core.
The current die cutting equipment is shut down firstly after the reel changing and the tape connecting are completed, then a staff manually operates the tape feeding, after the tape connecting position of the pole piece coiled material passes through the laser cutting position of the stamping mechanism, the master switch is manually reset to start the die cutting equipment, and the die cutting equipment starts to cut from the tape connecting position. Because whether the tape splicing position passes through the laser cutting position is observed manually, the situation that the tape splicing position exceeds the laser cutting position easily occurs, material waste is caused, the time spent is more, and the production efficiency is lower.
In order to solve the problems that the current die cutting method is easy to cause material waste and low in production efficiency, the embodiment of the application provides die cutting equipment, a control method thereof and electronic equipment, so that when a new pole piece coiled material (which is an uncut pole piece coiled material) is connected to the tail of a previous pole piece coiled material, after the die cutting equipment is started, whether a tape connecting position reaches a fixed cutting position or not is automatically detected, the tape connecting position reaches the fixed cutting position or not, the die cutting equipment is controlled to cut the new pole piece coiled material from the tape connecting position again by the length of the pole piece coiled material of one battery cell, whether the tape connecting position passes through the laser cutting position or not is observed manually is easily, the situation that the tape connecting position exceeds the laser cutting position is easy to occur, material waste is caused, and more time is spent, so that the production efficiency is low.
In order to better understand the technical solution of the present application, a die cutting device provided in an embodiment of the present application will be described below with reference to fig. 1. Fig. 1 shows a simplified schematic diagram of a die cutting device according to an embodiment of the present application. The die cutting apparatus may be a conventional die cutting apparatus and may include: the die cutting device comprises a tape receiving mechanism, a stamping mechanism, a transmission mechanism (comprising a main transmission for driving the pole piece coiled material to move, a plurality of rotating rollers (for secondary rotation) for assisting the pole piece coiled material to move, a floating roller (for adjusting the tension of the pole piece coiled material on the rotating rollers)), a controller (not shown in the figure) and the like, and can further comprise an unreeling mechanism, a reeling mechanism and the like.
The unreeling mechanism comprises left unreeling and right unreeling and is used for releasing the pole piece coiled material.
The tape splicing mechanism is used for finishing tape splicing work of two pole piece coiled materials (comprising a new pole piece coiled material and a previous pole piece coiled material), namely, splicing the new pole piece coiled material to the tail part of the previous pole piece coiled material.
The transmission mechanism is used for moving the pole piece coiled material to move from the unreeling mechanism side to the reeling structure, wherein the transmission structure comprises a main transmission, a plurality of rotating rollers and a floating roller. Wherein, each number (such as number 1 to number 25) in fig. 1 represents a rotating roller, and each rotating roller synchronously moves under the action of main transmission.
The punching mechanism is used for cutting the pole piece coiled material passing through the fixed cutting position to form corresponding pole lugs. The material receiving box in the stamping mechanism is used for receiving waste materials generated during cutting.
The winding mechanism is used for winding the cut pole piece coiled material to form the battery core winding material. When the tape at the tape connecting position reaches the left winding or the right winding, the reel changing action is automatically started.
The controller is used as a control center of the die cutting equipment and is used for controlling the operation of devices such as a stamping mechanism, a tape receiving mechanism, a transmission mechanism, an unreeling mechanism, a reeling mechanism and the like so as to ensure that the die cutting equipment operates normally.
In a first embodiment, the controller may be configured to detect whether the tape-receiving position has reached a fixed cutting position (e.g., the position of the rotating roller 13 in fig. 1), for example, the controller may be configured to detect whether the tape-receiving position has reached a fixed cutting position after a new pole piece web has been attached to the tail of a previous pole piece web and the die cutting device has been activated, and to control the punching mechanism to cut again on the new pole piece web from the tape-receiving position by the length of the pole piece web of one cell. That is, after the reel-changing and tape-receiving finishing die-cutting equipment is started, the tape-feeding is started, the tape-receiving position reaches a fixed cutting position, for example, the tape-feeding is performed to the position where the rotary roller 13 is located, the stamping mechanism is controlled to start from the tape-receiving position on the new pole piece coiled material, and the pole piece coiled material is cut again by taking the length of the pole piece coiled material required by a new battery cell as a reference (namely, starting from the heavy end).
The die cutting equipment is completed in reel changing and tape splicing, and after the die cutting equipment is started, a transmission mechanism in the die cutting equipment can drive the pole piece coiled material to move, and in the process, a controller can automatically detect whether the tape splicing position reaches a fixed cutting position or not. The fixed cutting position can refer to a laser cutting position in a stamping mechanism of the die cutting equipment, and when the stamping mechanism works, the pole piece coiled material passing through the laser cutting position is cut to form corresponding pole lugs.
Alternatively, the process of detecting whether the tape splicing position reaches the fixed cutting position by the controller may be: acquiring the moving length of the tape connecting position relative to a tape connecting mechanism in the die cutting equipment, and detecting whether the tape connecting position reaches a fixed cutting position or not based on the moving length and the preset length, wherein if the moving length is equal to the preset length, the tape connecting position reaches the fixed cutting position, and if the moving length is smaller than the preset length, the tape connecting position does not reach the fixed cutting position. By this means, it is possible to quickly and accurately detect whether the tape splicing position reaches the fixed cutting position.
The preset length can be a fixed value from a tape connecting mechanism in the die cutting equipment to a fixed cutting position of the pole piece coiled material, and the fixed value can be preset in the controller. After the positions of the tape splicing mechanism and the punching mechanism are set on the production line, the value is usually a fixed value, and for example, the preset length may be the length of the pole piece coiled material located on the rotating roller 3-the rotating roller 13 in fig. 1.
In one embodiment, the process of the controller obtaining the length of movement of the tape splicing position relative to the tape splicing mechanism in the die cutting device may be: and obtaining the moving length according to the running time of the die cutting equipment and the moving speed of the pole piece coiled material of the die cutting equipment. After the die cutting equipment is started, the conveying mechanism of the die cutting equipment can drive the pole piece coiled material to move, and the pole piece coiled material moves approximately at a uniform speed, so that the moving length can be obtained according to the running time of the die cutting equipment and the moving speed of the pole piece coiled material, for example, if the moving speed of the pole piece coiled material is v and the running time of the die cutting equipment is t, the moving length S=v×t.
In yet another embodiment, the process of the controller obtaining the length of movement of the taping position relative to the taping mechanism in the die cutting apparatus may be: and obtaining the moving length according to the rotation number of the rotary roller in the die cutting equipment and the length corresponding to each rotation of the rotary roller. The rotating roller is used for driving the pole piece coiled material to move. Because the pole piece coiled material can move along with the rotation of the rotating roller, the moving length can be obtained according to the rotation number of the rotating roller and the length corresponding to each rotation of the rotating roller. For example, assuming that the number of rotations of the rotating roller is n, n is a number greater than 0, and the length of each rotation of the rotating roller is a fixed value, denoted as S1, the movement length s=n×s1.
It is understood that the number of rotations of the rotating roller may be replaced by the number of rotations of the main transmission, and correspondingly, the length corresponding to each rotation of the rotating roller may be replaced by the length corresponding to each rotation of the main transmission.
The number of rotations can be measured with an associated sensor, for example with an angle sensor, rotation = rotation angle/360 °. The length of the rotating roller or the main transmission corresponding to each rotation can be determined in advance, and the length can be a fixed value, and the fixed value can be preset in the controller.
In yet another embodiment, the process of the controller obtaining the length of movement of the taping position relative to the taping mechanism in the die cutting apparatus may be: the moving length of the tape splicing position relative to the tape splicing mechanism in the die cutting equipment is acquired by adopting different acquisition modes, and then the final moving length is obtained based on the moving length acquired by the different acquisition modes, for example, the moving length acquired by the different acquisition modes is averaged to be used as the final moving length, so that the accuracy of the moving length can be improved.
In order to further reduce the waste of the pole piece coiled material, the controller is further used for continuously cutting the former pole piece coiled material when the coiled material length from the tape connecting position to the fixed cutting position is not less than the residual length of the pole piece coiled material required by the last unfinished electric core before tape connecting before the tape connecting position reaches the fixed cutting position, so that the length of the pole piece coiled material of the last unfinished electric core meets the length of the pole piece coiled material required by the complete electric core, and when the length of the coiled material to be cut is equal to the residual length, the cutting is stopped until the tape connecting position reaches the fixed cutting position. And after the tape connecting position reaches the fixed cutting position, cutting the new pole piece coiled material from the tape connecting position by the length of the pole piece coiled material of one battery cell.
If the length of the coiled material from the tape connecting position to the fixed cutting position is smaller than the residual length of the coiled material of the pole piece required by the last unfinished battery cell before tape connecting, stopping cutting before the tape connecting position does not reach the fixed cutting position. And after the tape connecting position reaches the fixed cutting position, cutting the new pole piece coiled material from the tape connecting position by the length of the pole piece coiled material of one battery cell. The method for obtaining the remaining length of the pole piece coiled material required by the last unfinished battery core is similar to the method for obtaining the moving length of the tape connecting position relative to the tape connecting mechanism in the die cutting equipment, for example, since the length of the pole piece coiled material required by the complete battery core is a preset constant (which is a known value), the cutting length of the pole piece coiled material of the last unfinished battery core only needs to be known before stopping reel-changing tape connecting, so that the remaining length of the pole piece coiled material required by the last unfinished battery core can be known, for example, the remaining length is equal to the length of the pole piece coiled material required by the battery core minus the cutting length of the pole piece coiled material of the last unfinished battery core.
The cutting length of the pole piece coiled material of the last unfinished battery core can be obtained according to the running time of the die cutting equipment and the moving speed of the pole piece coiled material of the die cutting equipment, or can be obtained according to the rotation number of the rotary roller in the die cutting equipment and the length corresponding to each rotation of the rotary roller.
For easy understanding, referring to the schematic diagram shown in fig. 2, in this embodiment, by detecting whether the coil length from the tape-receiving position to the fixed cutting position is not less than the remaining length of the coil of the pole piece required by the last unfinished electric core before tape-receiving, if the coil length is not less than the remaining length of the coil of the pole piece required by the last unfinished electric core before tape-receiving, the coil of the previous pole piece can be continuously cut, so that the coil length of the pole piece of the last unfinished electric core meets the coil length of the pole piece required by forming the complete electric core, and when the coil length to be cut is equal to the remaining length, the cutting is stopped until the tape-receiving position reaches the fixed cutting position, and then the coil length of the pole piece of the new electric core is cut again from the tape-receiving position. In this way, the waste of pole piece coiled materials can be reduced, and the reduced coiled materials comprise the material waste of the part from the tape connecting position to the coiled material length of the fixed cutting position and also comprise the material waste of the part from the coiled material length of the pole piece of the last unfinished battery cell. If the length of the coiled material from the tape connecting position to the fixed cutting position is smaller than the remaining length of the coiled material of the pole piece required by the last unfinished battery cell before tape connecting, stopping cutting before the tape connecting position reaches the fixed cutting position, so as to reduce equipment abrasion.
By adopting the full-automatic control method disclosed by the embodiment of the application, compared with a mode of manually operating the tape by staff, after reel changing and tape receiving are completed, the machine is not required to be stopped first and then the tape is manually operated by the staff, so that the machine stopping and tape moving time of about 120 seconds can be saved, and the operation efficiency of the die cutting equipment is greatly improved. Meanwhile, by detecting the length of the coiled material from the tape connecting position to the fixed cutting position, if the length of the coiled material is not less than the residual length of the coiled material of the pole piece required by the last unfinished battery cell before tape connection, the coiled material of the previous pole piece is continuously cut, so that the waste of the length of the coiled material is reduced.
In a second embodiment, the controller may be further configured to automatically obtain a coil length from the tape-receiving position to the fixed cutting position, for example, after a new coil of the pole piece is attached to the tail of a coil of the previous pole piece and the die-cutting device is started, the controller automatically obtains a coil length from the tape-receiving position to the fixed cutting position, and if the coil length is not less than a remaining length of the coil of the pole piece required by a previous unfinished battery cell before the tape-receiving, the controller controls the punching mechanism to continuously cut the coil of the previous pole piece so that the coil length of the pole piece of the previous unfinished battery cell meets the coil length of the pole piece required by the complete battery cell, and when the coil length to be cut is equal to the remaining length, the controller controls the punching mechanism to stop cutting until the tape-receiving position reaches the fixed cutting position. If the length of the coiled material from the tape connecting position to the fixed cutting position is smaller than the residual length of the coiled material of the pole piece required by the last unfinished battery cell before tape connecting, stopping cutting before the tape connecting position does not reach the fixed cutting position.
The second embodiment is different from the first embodiment in the focus of attention, and the second embodiment mainly focuses on: the control logic at this stage, after the new pole piece web is taped to the tail of the previous pole piece web and the die cutting apparatus is activated, before the taping position reaches the fixed cutting position, may not care about the cutting after the taping position reaches the fixed cutting position.
Wherein, the process of the controller obtaining the coiled material length from the tape receiving position to the fixed cutting position can be as follows: the moving length of the tape connecting position relative to the tape connecting mechanism in the die cutting equipment is obtained, and the length of the coiled material from the tape connecting position to the fixed cutting position is obtained based on the moving length and the preset length (the length from the tape connecting mechanism to the fixed cutting position of the coiled material of the pole piece in the die cutting equipment). For example, the web length from the taping position to the fixed cutting position may be equal to the preset length minus the moving length.
The process of obtaining the moving length of the tape splicing position relative to the tape splicing mechanism in the die cutting apparatus can be referred to the above description, and will not be described here for avoiding redundancy.
Based on the same inventive concept, the embodiment of the present application further provides a die cutting method, and the die cutting method provided by the embodiment of the present application will be described with reference to fig. 3. The die cutting method can be applied to the die cutting equipment.
S1: detecting whether the tape connecting position reaches a fixed cutting position, wherein the tape connecting position is a position where a new pole piece coiled material is connected with a previous pole piece coiled material in die cutting equipment.
When the die cutting equipment changes the coil and connects the tape (connects the new pole piece coiled material to the tail of the former pole piece coiled material), the machine is stopped to change the coil, after the new pole piece coiled material is connected to the tail of the former pole piece coiled material, the die cutting equipment is started, and after the die cutting equipment is started, the die cutting equipment can automatically detect whether the tape connecting position reaches the fixed cutting position. After the die cutting equipment is started, a transmission mechanism in the die cutting equipment can drive the pole piece coiled material to move.
In an alternative embodiment, the implementation procedure of S1 may be: acquiring the moving length of the tape connecting position relative to a tape connecting mechanism in the die cutting equipment, and detecting whether the tape connecting position reaches a fixed cutting position or not based on the moving length and the preset length, wherein if the moving length is equal to the preset length, the tape connecting position reaches the fixed cutting position, and if the moving length is smaller than the preset length, the tape connecting position does not reach the fixed cutting position. By this means, it is possible to quickly and accurately detect whether the tape splicing position reaches the fixed cutting position.
In one embodiment, the process of obtaining the length of movement of the taping position relative to the taping mechanism in the die cutting apparatus may be: and obtaining the moving length according to the running time of the die cutting equipment and the moving speed of the pole piece coiled material of the die cutting equipment.
In yet another embodiment, the process of obtaining the length of movement of the taping position relative to the taping mechanism in the die cutting apparatus may be: and obtaining the moving length according to the rotation number of the rotary roller in the die cutting equipment and the length corresponding to each rotation of the rotary roller.
S2: and when the tape connecting position reaches the fixed cutting position, controlling the die cutting equipment to cut the new pole piece coiled material from the tape connecting position again by the length of the pole piece coiled material of one battery cell.
When the tape-connecting position reaches a fixed cutting position, the automatic control die-cutting equipment cuts the new pole piece coiled material from the tape-connecting position again by the length of the pole piece coiled material of one electric core.
To further reduce wastage of pole piece coils, the method of controlling the die cutting apparatus before the taping station reaches the fixed cutting station further comprises: if the length of the coiled material from the tape connecting position to the fixed cutting position is not less than the remaining length of the coiled material of the pole piece required by the last unfinished electric core before tape connection, continuing to cut the coiled material of the previous pole piece so that the length of the coiled material of the pole piece of the last unfinished electric core meets the length of the coiled material of the pole piece required by the complete electric core, and stopping cutting until the tape connecting position reaches the fixed cutting position when the length of the coiled material to be cut is equal to the remaining length.
It should be noted that, in order to improve the winding quality of the battery cell, after the reel is replaced and the tape is connected, the tape is usually cut away from the tape connecting position, that is, after the tape connecting position reaches the fixed cutting position, the new pole piece coiled material is cut again by the length of the pole piece coiled material of the battery cell from the tape connecting position.
The method of controlling the die cutting apparatus before the tape splicing position reaches the fixed cutting position further comprises: if the length of the coiled material from the tape connecting position to the fixed cutting position is smaller than the residual length of the coiled material of the pole piece required by the last unfinished battery cell before tape connecting, stopping cutting before the tape connecting position does not reach the fixed cutting position. And after the tape connecting position reaches the fixed cutting position, cutting the new pole piece coiled material from the tape connecting position again by the length of the pole piece coiled material of one battery cell.
For a better understanding of the above method, in an alternative embodiment, a schematic diagram of the method of controlling the die cutting apparatus may be as shown in fig. 2.
Based on the same inventive concept, the embodiment of the present application further provides a method for controlling a die cutting apparatus, and the further die cutting method provided by the embodiment of the present application will be described with reference to fig. 4.
S100: the web length from the taping position to the fixed cutting position is obtained.
When the die cutting equipment changes the coil and connects the tape (connects the new pole piece coiled material to the tail of the former pole piece coiled material), the machine is stopped to change the coil, after the new pole piece coiled material is connected to the tail of the former pole piece coiled material, the die cutting equipment is started, and after the die cutting equipment is started, the die cutting equipment can automatically acquire the coiled material length from the tape connecting position to the fixed cutting position.
The process of obtaining the web length from the taping position to the fixed cutting position may be: the moving length of the tape connecting position relative to the tape connecting mechanism in the die cutting equipment is obtained, and the length of the coiled material from the tape connecting position to the fixed cutting position is obtained based on the moving length and the preset length (the length from the tape connecting mechanism to the fixed cutting position of the coiled material of the pole piece in the die cutting equipment). For example, the web length from the taping position to the fixed cutting position may be equal to the preset length minus the moving length.
S200: if the length of the coiled material is not less than the residual length of the coiled material of the pole piece required by the last unfinished battery cell before the tape connection, continuing to cut the coiled material of the previous pole piece.
If the length of the coiled material is not less than the residual length of the coiled material of the pole piece required by the last unfinished battery cell before the tape connection, the coiled material of the previous pole piece is continuously cut, so that the material waste is further reduced. The material waste for the portion of the web length that contains the taping position to the fixed cutting position is also the material waste for the portion of the web length of the pole piece that contains the last unfinished cell that has been cut.
S300: and stopping cutting when the length of the coiled material to be cut is equal to the residual length until the tape connecting position reaches the fixed cutting position.
And stopping cutting when the length of the coiled material to be cut is equal to the residual length until the tape connecting position reaches the fixed cutting position. At this point, the cut web length + the remaining length is equal to the length of the pole piece web required to form the complete cell.
After S100, the die cutting method further includes: if the length of the coiled material from the tape receiving position to the fixed cutting position is smaller than the residual length, stopping cutting before the tape receiving position does not reach the fixed cutting position.
The implementation principle and the technical effects of the method embodiment are the same as those of the die cutting device embodiment, and for the sake of brief description, reference may be made to the corresponding content in the foregoing die cutting device embodiment where the method embodiment is not mentioned.
As shown in fig. 5, fig. 5 shows a block diagram of an electronic device according to an embodiment of the present application. The electronic device 200 includes: a transceiver 210, a memory 220, a communication bus 230, and a processor 240.
The transceiver 210, the memory 220, and the processor 240 are electrically connected directly or indirectly to each other to realize data transmission or interaction. For example, the components may be electrically coupled to each other via one or more communication buses 230 or signal lines. Wherein the transceiver 210 is configured to transmit and receive data. The memory 220 is used to store a computer program comprising at least one software function module that may be stored in the memory 220 in the form of software or Firmware (Firmware) or cured in an Operating System (OS) of the electronic device 200. The processor 240 is configured to execute software functional modules or computer programs stored in the memory 220. For example, the processor 240 is configured to detect whether a taping position is reached at a fixed cutting position, where a new pole piece web is connected to a previous pole piece web in the die cutting apparatus; when the tape connecting position reaches the fixed cutting position, controlling the die cutting equipment to cut the new pole piece coiled material from the tape connecting position by the length of the pole piece coiled material of one battery cell, or after the new pole piece coiled material is connected to the tail part of the previous pole piece coiled material and the die cutting equipment is started, acquiring the coiled material length from the tape connecting position to the fixed cutting position; if the length of the coiled material is not less than the residual length of the coiled material of the pole piece required by the last unfinished electric core before the tape connection, continuously cutting the coiled material of the previous pole piece so that the length of the coiled material of the pole piece of the last unfinished electric core meets the length of the coiled material of the pole piece required by forming the complete electric core; and stopping cutting when the length of the coiled material to be cut is equal to the residual length until the tape connecting position reaches the fixed cutting position.
The Memory 220 may be, but is not limited to, a random access Memory (Random Access Memory, RAM), a Read Only Memory (ROM), a programmable Read Only Memory (Programmable Read-Only Memory, PROM), an erasable Read Only Memory (Erasable Programmable Read-Only Memory, EPROM), an electrically erasable Read Only Memory (Electric Erasable Programmable Read-Only Memory, EEPROM), etc.
The processor 240 may be an integrated circuit chip with signal processing capabilities. The processor may be a general-purpose processor, including a central processing unit (Central Processing Unit, CPU), a network processor (Network Processor, NP), etc.; but also digital signal processors (Digital Signal Processor, DSP), application specific integrated circuits (Application Specific Integrated Circuit, ASIC), field programmable gate arrays (Field Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components. The disclosed methods, steps, and logic blocks in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor 240 may be any conventional processor or the like.
The electronic device 200 includes, but is not limited to, an industrial personal computer or a die-cutting device.
It should be noted that, in the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described as different from other embodiments, and identical and similar parts between the embodiments are all enough to be referred to each other.
In addition, the functional modules in the embodiments of the present application may be integrated together to form a single part, or each module may exist alone, or two or more modules may be integrated to form a single part.
The foregoing is merely specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and the changes and substitutions are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (10)
1. A die cutting method, characterized by being applied to a die cutting apparatus, the method comprising:
detecting whether a tape connecting position reaches a fixed cutting position or not, wherein the tape connecting position is a position at which a new pole piece coiled material and a previous pole piece coiled material in die cutting equipment are connected;
When the tape connecting position reaches the fixed cutting position, controlling the die cutting equipment to cut the new pole piece coiled material from the tape connecting position by the length of the pole piece coiled material of one battery cell again;
wherein, before the taping position reaches the fixed cutting position, the method further comprises:
if the length of the coiled material from the tape connecting position to the fixed cutting position is not less than the remaining length of the coiled material of the pole piece required by the last unfinished battery cell before tape connecting, continuing to cut the coiled material of the previous pole piece so that the length of the coiled material of the pole piece of the last unfinished battery cell meets the length of the coiled material of the pole piece required by forming the complete battery cell;
and stopping cutting when the length of the coiled material to be cut is equal to the residual length until the tape connecting position reaches the fixed cutting position.
2. The die cutting method of claim 1, further comprising:
and stopping cutting before the tape receiving position does not reach the fixed cutting position when the length of the coiled material from the tape receiving position to the fixed cutting position is smaller than the residual length.
3. The die cutting method of claim 1, wherein detecting whether the taping position of the pole piece web has reached the fixed cutting position comprises:
Acquiring the moving length of the tape splicing position relative to a tape splicing mechanism in the die cutting equipment;
detecting whether the taping position reaches the fixed cutting position based on the moving length and a preset length; the preset length is the length from the tape connecting mechanism in the die cutting equipment to the fixed cutting position of the pole piece coiled material;
and if the moving length is equal to the preset length, representing that the tape connecting position reaches the fixed cutting position.
4. The die cutting method of claim 3, wherein obtaining a length of movement of the taping position relative to a taping mechanism in the die cutting apparatus comprises:
obtaining the moving length according to the running time of the die cutting equipment and the moving speed of the pole piece coiled material; or alternatively
And obtaining the moving length according to the rotation number of the rotating roller in the die cutting equipment and the length corresponding to each rotation of the rotating roller, wherein the rotating roller is used for driving the pole piece coiled material to move.
5. A die cutting method, characterized by being applied to a die cutting apparatus, the method comprising:
acquiring the length of a coiled material from a tape connecting position to a fixed cutting position, wherein the tape connecting position is a position at which a new pole piece coiled material and a previous pole piece coiled material in die cutting equipment are connected;
If the length of the coiled material is not less than the residual length of the coiled material of the pole piece required by the last unfinished electric core before the tape connection, continuously cutting the coiled material of the previous pole piece so that the length of the coiled material of the pole piece of the last unfinished electric core meets the length of the coiled material of the pole piece required by forming the complete electric core;
and stopping cutting when the length of the coiled material to be cut is equal to the residual length until the tape connecting position reaches the fixed cutting position.
6. The die cutting method of claim 5, wherein after said capturing the web length from the taping position to the fixed cutting position, the method further comprises:
and stopping cutting before the tape receiving position does not reach the fixed cutting position when the length of the coiled material from the tape receiving position to the fixed cutting position is smaller than the residual length.
7. The die cutting method of claim 5 or 6, wherein obtaining the web length from the taping position to a fixed cutting position comprises:
acquiring the moving length of the tape splicing position relative to a tape splicing mechanism in the die cutting equipment;
based on the moving length and the preset length, obtaining the coiled material length from the tape receiving position to the fixed cutting position; the preset length is the length from the tape connecting mechanism in the die cutting equipment to the fixed cutting position of the pole piece coiled material.
8. An electronic device, comprising:
the device comprises a memory and a processor, wherein the processor is connected with the memory;
the memory is used for storing programs;
the processor is configured to invoke a program stored in the memory to perform the die cutting method of any of claims 1-4 or to perform the die cutting method of any of claims 5-7.
9. A die cutting apparatus, comprising:
a punching mechanism;
the tape splicing mechanism is used for finishing tape splicing work of the new pole piece coiled material and the former pole piece coiled material;
the controller is used for detecting whether the tape connecting position reaches a fixed cutting position or not, and the tape connecting position is a position where the new pole piece coiled material is connected with the previous pole piece coiled material; when the tape connecting position reaches the fixed cutting position, controlling the stamping mechanism to cut the new pole piece coiled material from the tape connecting position by the length of the pole piece coiled material of one battery cell again;
the controller is further configured to, prior to the taping position reaching the fixed cutting position:
if the length of the coiled material from the tape connecting position to the fixed cutting position is not less than the remaining length of the coiled material of the pole piece required by the last unfinished battery cell before tape connecting, continuing to cut the coiled material of the previous pole piece so that the length of the coiled material of the pole piece of the last unfinished battery cell meets the length of the coiled material of the pole piece required by forming the complete battery cell;
And stopping cutting when the length of the coiled material to be cut is equal to the residual length until the tape connecting position reaches the fixed cutting position.
10. A die cutting apparatus, comprising:
a punching mechanism;
the tape splicing mechanism is used for finishing tape splicing work of the new pole piece coiled material and the former pole piece coiled material;
the controller is used for acquiring the length of the coiled material from the tape connecting position to the fixed cutting position, wherein the tape connecting position is the position where the new coiled material of the pole piece is connected with the coiled material of the previous pole piece; if the length of the coiled material is not less than the residual length of the coiled material of the pole piece required by the last unfinished electric core before the tape connection, controlling the stamping mechanism to continuously cut the coiled material of the previous pole piece so that the length of the coiled material of the pole piece of the last unfinished electric core meets the length of the coiled material of the pole piece required by forming the complete electric core; and when the length of the coiled material to be cut is equal to the residual length, controlling the stamping mechanism to stop cutting until the tape connecting position reaches the fixed cutting position.
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| CN202310281415.XA CN115990642B (en) | 2023-03-22 | 2023-03-22 | Die cutting method, electronic equipment and die cutting equipment |
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| JPH0648649A (en) * | 1992-07-24 | 1994-02-22 | Fuji Photo Film Co Ltd | Conveyance processing device for recording material of image forming device |
| JP2006103019A (en) * | 2004-10-01 | 2006-04-20 | Dainippon Printing Co Ltd | Automatic registration control device, and its method |
| CN104233650B (en) * | 2014-06-25 | 2016-03-16 | 广州科祺自动化设备有限公司 | Automatic benchmarking's method, to marking machine structure and ELASTIC SEWING MACHINE |
| CN110943198A (en) * | 2019-12-04 | 2020-03-31 | 信义电源(苏州)有限公司 | Lithium battery sheet-making equipment |
| CN214442332U (en) * | 2020-12-31 | 2021-10-22 | 瑞浦能源有限公司 | Die cutting tailing standardization control device |
| CN113182703B (en) * | 2021-04-26 | 2022-12-30 | 唐山国轩电池有限公司 | Device and method for reducing unreeling residual scrappage of lithium battery reeling machine |
| CN114865104B (en) * | 2022-04-29 | 2023-06-20 | 广东利元亨智能装备股份有限公司 | Pole piece automatic tape connecting method, device, controller and storage medium |
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