CN222714695U

CN222714695U - Pole piece tape connecting device and pole piece die cutting equipment

Info

Publication number: CN222714695U
Application number: CN202520110775.8U
Authority: CN
Inventors: 王家昌; 杨友结
Original assignee: Contemporary Amperex Technology Co Ltd
Current assignee: Contemporary Amperex Technology Co Ltd
Priority date: 2025-01-17
Filing date: 2025-01-17
Publication date: 2025-04-04
Anticipated expiration: 2035-01-17

Abstract

The application discloses a pole piece tape connecting device and pole piece die cutting equipment, and relates to the technical field of battery production, wherein the pole piece tape connecting device comprises a glue carrying part and two tape connecting parts, the glue carrying part is provided with a glue carrying surface for positioning and carrying adhesive tapes, the tape connecting part is used for picking up the end part of a pole piece material tape, at least one of the two tape connecting parts is provided with a tape winding roller for winding a corresponding pole piece material tape, the glue carrying part and the two tape connecting parts can be correspondingly positioned at a tape connecting station, the two tape connecting parts can be respectively abutted to the glue carrying surface and are arranged at intervals, and the tape winding roller can be close to the other tape connecting part for reversing movement. According to the technical scheme provided by the application, the two tape connecting parts are used for carrying out tape connecting operation on the two pole piece material tapes instead of manual operation, the tape winding roller can stably adhere the material tapes to the adhesive tapes by utilizing the self reverse rotation, the reliability of tape connection is improved, and the risk of tape breakage of the pole piece material tapes is reduced.

Description

Pole piece tape connecting device and pole piece die cutting equipment

Technical Field

The application relates to the technical field of battery production, in particular to a pole piece tape connecting device and pole piece die cutting equipment.

Background

In the production process of the lithium ion battery, after the coating and drying process, the specific size and shape of the pole piece material belt are cut through die cutting equipment, in the die cutting equipment, the pole piece material belt is fed to a tape feeding mechanism in a coiled form, after one coiled pole piece material belt is unreeled and emptied, the pole piece material belt on the tape feeding mechanism is required to be connected with the full pole piece material belt through an adhesive tape so as to ensure continuous feeding to the tape feeding mechanism, however, the existing die cutting equipment mostly adopts a manual tape connecting mode, the reliability of manual tape connection is poor, the adhesive tape is easy to fall off, and the risk of tape breakage of the pole piece material belt is high.

Disclosure of utility model

The application mainly aims to provide a pole piece tape connecting device and pole piece die cutting equipment, and aims to solve the problem that the reliability of a manual tape connecting mode in the existing die cutting equipment is poor.

In a first aspect, the present application provides a pole piece tape splicing device for connecting two pole piece material tapes, where the pole piece tape splicing device has a tape splicing station, and the pole piece tape splicing device includes:

a glue carrying part with a glue carrying surface for positioning and carrying the adhesive tape, and

The two tape connecting parts are used for picking up the end parts of the pole piece material tapes, at least one of the two tape connecting parts is provided with a tape winding roller, and the tape winding roller is rotationally arranged and used for winding the corresponding pole piece material tapes;

The adhesive carrying part and the two tape connecting parts can be movably arranged at least partially in the direction close to the tape connecting station, so that the adhesive carrying part and the two tape connecting parts can be correspondingly positioned at the tape connecting station;

The adhesive tape connecting station is characterized in that opposite movable strokes are arranged between the two adhesive tape connecting parts and the adhesive carrying part, so that the two adhesive tapes are respectively abutted against the adhesive carrying surface, and the ends of the two pole piece material tapes are adhered to the adhesive tapes;

In the tape connecting station, two tape connecting parts are arranged at intervals along the length direction of the adhesive carrying surface, and the tape winding roller can reversely move close to the other tape connecting part so as to release the corresponding pole piece material tape and enable the pole piece material tape to be unfolded and adhered to the adhesive tape.

According to the technical scheme, the adhesive tape can be positioned and loaded on the adhesive carrying surface of the adhesive carrying part, the two tape connecting parts can respectively pick up the end parts of the two pole piece material tapes, as the adhesive carrying part and the two tape connecting parts can at least partially move in the direction close to the tape connecting station, and the two tape connecting parts and the adhesive carrying part have opposite movable strokes, the adhesive tape can be adhered to the two pole piece material tapes at the tape connecting station, the tape connecting operation is carried out on the two pole piece material tapes by utilizing the mode that the two tape connecting parts are used for carrying the adhesive carrying part, not only can the tape winding rollers in the two tape connecting parts be used for winding the pole piece material tapes with a certain length when the pole piece material tapes are picked up, but also the pole piece material tapes can be gradually released by utilizing the inversion of the tape connecting parts and adhered to the adhesive tapes, and the bonding firmness between the pole piece material tapes and the adhesive tapes can be ensured by adopting the rolling bonding mode, so that the bonding reliability of the adhesive tape connecting is improved, and the risk of tape breakage of the pole piece material tapes is reduced.

In some embodiments, the pole piece tape-receiving device further has a glue-taking station, a first glue-pulling station and a second glue-pulling station, the first glue-pulling station and the second glue-pulling station being respectively located at opposite sides of the glue-taking station;

The pole piece tape connecting device further comprises:

A rotatably disposed supply roller for unreeling the adhesive tape, and

The glue pulling part moves between the first glue pulling station and the second glue pulling station so as to pick up the adhesive tape on the glue supply roller at the first glue pulling station and pull the adhesive tape to the second glue pulling station;

The adhesive carrying part moves between the adhesive taking station and the adhesive receiving station, so that the adhesive tape is positioned and loaded at the adhesive taking station and is transported to the adhesive receiving station.

The adhesive supply roller is arranged in a rotating mode, the adhesive tape can be continuously unreeled to the first adhesive pulling station to provide adhesive tapes, the adhesive pulling portion moves between the first adhesive pulling station and the second adhesive pulling station, the adhesive tapes at the first station can be pulled to the second adhesive pulling station, the adhesive tapes can pass through the adhesive taking station, the adhesive carrying portion can position and load the adhesive tapes at the adhesive taking station and transport the adhesive tapes to the tape receiving station, continuous and automatic supply of the adhesive tapes is achieved, the adhesive tape supply frequency of the adhesive carrying portion can be matched with the pole piece material tape pickup frequency of the two tape receiving portions, and efficient tape receiving operation is guaranteed.

In some embodiments, the pole piece tape connecting device further comprises a limiting part, wherein the limiting part is arranged at the first glue pulling station and is used for limiting and fixing or loosening the adhesive tape pulled out from the glue supply roller;

The adhesive tape pulling part pulls the adhesive tape from the limiting part at the first adhesive pulling station.

When the adhesive tape is pulled to the second adhesive pulling station by the adhesive pulling part, the limiting part can be converted into the releasing state from the releasing state, so that the adhesive pulling part can pull the adhesive tape to the second adhesive pulling station, and when the adhesive pulling part pulls the adhesive tape to the second adhesive pulling station, the limiting part can be converted into the fixing state from the releasing state, thereby fixing the adhesive tape again, and after a section of adhesive tape at the adhesive pulling station is cut off and taken away, the adhesive tape at the first adhesive pulling station can be stably kept on the limiting part, the follow-up cyclic pick-up of the adhesive pulling part is facilitated, and the accuracy of the adhesive tape pick-up of the adhesive pulling part can be greatly improved through the setting of the limiting part.

In some embodiments, the pole piece tape connecting device further comprises a glue cutting part, wherein the glue cutting part can be correspondingly positioned at the glue taking station and is used for cutting the adhesive tape after the adhesive carrying surface of the adhesive carrying part is positioned and loaded at the glue taking station.

The adhesive tape can be automatically cut off after the adhesive tape is loaded on the adhesive loading surface of the adhesive loading part in a positioning manner through the arrangement of the adhesive cutting part, so that the adhesive loading part can be ensured to leave from the adhesive taking station smoothly, and compared with a manual adhesive cutting mode, the adhesive cutting part is arranged to be capable of accurately matching with the adhesive taking time of the adhesive loading part, so that the adhesive cutting operation is continuously and efficiently completed.

In some embodiments, the adhesive cutting portion is disposed on a side portion of the adhesive carrying portion adjacent to the adhesive carrying surface, and the adhesive cutting portion can stretch and retract in an orientation of the adhesive carrying surface to cut the adhesive tape.

The adhesive tape cutting device comprises an adhesive tape cutting device, an adhesive tape cutting device and an adhesive tape cutting device, wherein the adhesive cutting device is arranged on the adhesive carrying device, the adhesive carrying device can move along with the adhesive carrying device, when the adhesive carrying device moves to an adhesive taking station and positions and loads the adhesive tape, the adhesive cutting device can automatically cut off the adhesive tape, the adhesive carrying device is convenient for quantitatively cutting the adhesive tape, and meanwhile, the adhesive cutting device is simple in structure, convenient to rely on the adhesive carrying device as an installation basis, and occupation of installation space on pole piece die cutting equipment can be reduced.

In some embodiments, the pole piece tape splicing device further has a first material taking station and a second material taking station, the first material taking station and the second material taking station being disposed offset from the tape splicing station;

The two tape connecting parts include:

A first tape receiving part movable between the first material taking station and the tape receiving station for receiving the tail end of the pole piece material tape on the tape feeding roller at the first material taking station and pulling the tail end to the tape receiving station, and

The second strip receiving part moves between the second material taking station and the strip receiving station and is used for taking the head end of the pole piece strip on the full material feeding roller at the second material taking station and pulling the pole piece strip to the strip receiving station.

The first tape connecting part is used for moving between the first material taking station and the tape connecting station, the tail end of the pole piece material tape on the tape taking roller can be taken up and pulled to the tape connecting station, the second tape connecting part is used for moving between the second material taking station and the tape connecting station, the head end of the pole piece material tape on the full material feeding roller can be taken up and pulled to the tape connecting station, and therefore automatic taking and transferring of the pole piece material tape to be connected are achieved, the automation degree is improved, and the tape connecting efficiency of the pole piece material tape is also improved.

In some embodiments, the adhesive carrying surface of the adhesive carrying part is provided with a plurality of vacuum adsorption holes.

Wherein, carry the gluey portion to adopt vacuum adsorption's mode location to load the sticky tape, the sticky tape need not to reserve unnecessary area and supplies to press the hold mechanism to press to hold, also is unlikely to leave unnecessary sticky tape at the lateral of the width direction of pole piece material area, and less to the influence of roll-on to fix and release the gluey portion comparatively easily and high-efficient through vacuum adsorption's mode.

In some embodiments, the winding roller comprises two clamping parts, wherein the two clamping parts are oppositely arranged in the rotation radial direction of the winding roller and can move close to each other so as to clamp the pole piece material belt therebetween.

The winding roller clamps the pole piece material belt through two clamping parts, belongs to a mechanical fixing mode, and the two clamping parts can enable the applied clamping acting force to be large enough to stabilize the pole piece material belt, so that the probability that the pole piece material belt falls off from the winding roller is reduced.

In a second aspect, the application also provides a pole piece die cutting device, which comprises the pole piece tape connecting device.

In some embodiments, the pole piece die cutting apparatus further comprises a feed roll and a feed roll, the feed roll to unwind the pole piece feed strip to the feed roll;

The pole piece belt connecting device is provided with a first material taking station and a second material taking station, the first material taking station is positioned between the tape moving roller and the feeding roller, and the second material taking station is arranged corresponding to the feeding roller;

the two tape connecting parts of the pole piece tape connecting device comprise:

A first tape receiving portion movable between the first material taking station and the tape receiving station for receiving a tail end of a pole piece tape on a tape feed roller at the first material taking station, and

The second strip receiving part moves between the second material taking station and the strip receiving station and is used for receiving the head end of the pole piece strip on the full material feeding roller at the second material taking station.

In some embodiments, two of the feed rollers are provided, and the two feed rollers are used for alternately feeding the tape running roller;

The first material taking station and the second material taking station are correspondingly and respectively provided with two material taking stations;

The first tape connecting part moves between the tape connecting station and the two first material taking stations;

the second tape connecting part moves between the tape connecting station and the two second material taking stations.

The pole piece material belt can be provided for unreeling the tape feeding roller by adopting the two feeding rollers alternately, the other empty feeding roller can be replaced by the full feeding roller in the process that the currently unreeled feeding roller is gradually empty, after the currently unreeled feeding roller is completely empty, the pole piece material belt on the tape feeding roller can be immediately connected to the pole piece material belt on the full feeding roller, compared with the scheme that a single feeding roller is unreeled by the tape feeding roller, the scheme is completed in the unreeled process of the feeding roller by unreeled action, the reel changing time is saved, and the shutdown time of pole piece die cutting equipment is shortened.

In some embodiments, the pole piece die cutting apparatus has a material strip stabilizing station at which a material strip stabilizing device is provided, the material strip stabilizing device comprising:

The tension detection part is used for detecting the tension of the pole piece material belt;

The roller assembly comprises a plurality of rotating rollers, wherein the rotating rollers are used for winding a pole piece material belt, the rotating rollers comprise tension rollers and two limit rollers, the two limit rollers are arranged at intervals along a first direction and used for supporting one side of the pole piece material belt, and the tension rollers are arranged between the two limit rollers and can be movably arranged along a second direction and used for pressing the other side of the pole piece material belt;

A driving device having a driving part extending and contracting along the second direction, the driving part being connected with the roller shaft of the tension roller, and

And the control device is electrically connected with the driving device and the tension detection part and controls the driving device to act according to the detection signal of the tension detection part.

The tension roller is provided with a movable adjustment section along the first direction through the interval arrangement of the two limit rollers, in the movable adjustment section, the tension roller can press and hold the pole piece material belt along the second direction under the drive of the driving part, and the control device can control the driving device to act correspondingly according to the pole piece tension detected by the tension detection part, so that a feedback adjustment mechanism is formed, the tension of the pole piece material belt can be stabilized in a reliable range, the tension fluctuation range of the pole piece material belt before die cutting is controlled, the shaking amplitude of the pole piece material belt along the incoming direction is further controlled, and the die cutting quality is ensured.

In some embodiments, the driving device comprises two driving cylinders, and cylinder rods of the two driving cylinders are respectively and correspondingly connected with two ends of a roller shaft of the tension roller;

the driving part comprises two cylinder rods of the driving cylinders.

Compared with other driving modes, the driving cylinder is relatively simple to operate and maintain and easy to install, and more importantly, the driving cylinder can provide quick linear motion, is suitable for feedback adjustment scenes requiring quick response in the embodiment of the application, and is beneficial to reducing bending stress born by a cylinder rod by driving the driving cylinders from two ends of a roll shaft of the tension roll respectively and controlling deformation of a pole piece material belt of the tension roll by self, so that feedback control precision of a control device is improved.

In some embodiments, the drive cylinder comprises a vacuum cylinder.

Compared with a standard cylinder, the vacuum cylinder has a larger stroke, the adjustable range of the tension roller is larger, the reaction of the vacuum cylinder is quicker, the adjustment sensitivity is improved, and the tension fluctuation range of the pole piece material belt before die cutting can be further reduced.

In some embodiments, the cylinder chambers of the two drive cylinders are in communication with each other.

The cylinder inner cavities of the two driving cylinders are mutually communicated, so that the internal pressure of the two driving cylinders is ensured to be at the same level at the moment, the synchronism of the telescopic activities of the two cylinder rods can be improved, and the feedback control precision of the control device can be further improved.

In some embodiments, the pole piece die cutting apparatus further has a die cutting station at which a die cutting device is disposed;

The material belt stabilizing station is arranged adjacent to the die cutting station.

The material belt stabilizing station is arranged adjacent to the die cutting station, so that the material belt stabilizing device can control the tension of the pole piece material belt at the position closest to the die cutting device, and the control of the material belt stabilizing device on the pole piece material belt tension can meet the cutting requirement of the die cutting device.

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 required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of an embodiment of a pole piece die cutting apparatus provided by the present application;

FIG. 2 is a schematic view of another state of the pole piece die cutting apparatus provided by the present application;

FIG. 3 is a schematic view of a pole piece die cutting apparatus according to yet another embodiment of the present application;

FIG. 4 is a schematic view of a pole piece die cutting apparatus according to yet another embodiment of the present application;

FIG. 5 is a schematic view of a partially enlarged structure of the glue supply roller, the glue pulling portion, the limiting portion and the glue carrying portion in FIG. 1;

FIG. 6 is a schematic plan view of the adhesive carrier of FIG. 5 from another view;

FIG. 7 is a schematic view of the belt connecting portion in FIG. 1;

FIG. 8 is a schematic diagram of another embodiment of a pole piece die cutting apparatus provided by the present application;

Fig. 9 is a schematic plan view of the driving device and the tension roller in fig. 8 from another view.

Reference numerals illustrate:

100. Pole piece die cutting equipment;

1. A pole piece tape connecting device;

11. Adhesive carrying part 11a, adhesive carrying surface 111, vacuum adsorption hole 121, adhesive receiving part 121a, tape winding roller 1211a, clamping part 1211, first adhesive receiving part 1212, second adhesive receiving part 13, adhesive supplying roller 14, adhesive pulling part 15, limiting part 16, adhesive cutting part;

2. A material belt stabilizing device;

21. Roller assembly, 211, rotating roller, 211a, tension roller, 211b, limit roller, 22, driving device, 221, driving part, 22a, driving cylinder, 221a, cylinder rod, 222, vacuum tube;

3. pole piece material belt, 4, adhesive belt, 5, tape roller, 6, feeding roller, 7, die cutting device;

X, a first direction, Y, a second direction.

The achievement of the objects, functional features and advantages of the present application will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

Embodiments of the technical scheme of the present application will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present application, and thus are merely examples, and are not intended to limit the scope of the present application.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs, the terms used herein are for the purpose of describing particular embodiments only and are not intended to be limiting of the application, and the terms "comprising" and "having" and any variations thereof in the description of the application and the claims and the above description of the drawings are intended to cover non-exclusive inclusions.

In the description of embodiments of the present application, the technical terms "first," "second," and the like are used merely to distinguish between different objects and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, a particular order or a primary or secondary relationship. In the description of the embodiments of the present application, the meaning of "plurality" is two or more unless explicitly defined otherwise.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

In the description of the embodiments of the present application, the term "plurality" means two or more (including two), and similarly, "plural sets" means two or more (including two), and "plural sheets" means two or more (including two).

In the description of the embodiments of the present application, the orientation or positional relationship indicated by the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplification of the description, and do not indicate or imply that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the embodiments of the present application.

In the description of the embodiments of the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "fixed" and the like are to be construed broadly and include, for example, fixed connection, detachable connection, or integral therewith, mechanical connection, electrical connection, direct connection, indirect connection via an intermediary, communication between two elements, or interaction between two elements. The specific meaning of the above terms in the embodiments of the present application will be understood by those of ordinary skill in the art according to specific circumstances.

In the production process of the lithium ion battery, after the coating and drying process, the specific size and shape of the pole piece material belt are cut through the die cutting equipment, in the die cutting equipment, the pole piece material belt is fed to the tape feeding mechanism in a coiled form, after one coiled pole piece material belt is unreeled and emptied, the die cutting equipment is stopped for a period of time, the pole piece material belt on the tape feeding mechanism is required to be connected with the full pole piece material belt through the adhesive tape so as to ensure continuous feeding to the tape feeding mechanism, however, the conventional die cutting equipment mostly adopts a manual tape connecting mode, the manual tape connecting reliability is poor, the adhesive tape is easy to fall off, the risk of tape breakage of the pole piece material belt is high, meanwhile, the efficiency of manual tape connecting is low, the stop time of the die cutting equipment is long, and the production efficiency of the die cutting equipment is influenced.

Analyzing the reasons for the problems, because the pole piece material belt has certain flexibility, the problem that the local rubberizing pressure of the pole piece material belt and the adhesive tape is too small can occur when the pole piece material belt is manually pasted, the problem that air bubbles are not extruded at the joint of the pole piece material belt and the adhesive tape can be difficult to ensure even adhesion of the pole piece material belt and the adhesive tape can occur, and in the process of tape feeding, the area of weak adhesion between the pole piece material belt and the adhesive tape is easy to degum firstly because the pole piece material belt needs to bear tension, so that the residual area of the adhesive tape is stressed too much to exceed the adhesion limit of the adhesive tape, and the adhesive tape falls off, so that the pole piece material belt after tape connection has higher tape breaking risk.

In view of this, can consider to adopt mechanical structure to replace the manual work to accomplish the tape splicing operation voluntarily, for example through two tape splicing portion machinery pick up two pole piece material strips that wait to connect to provide the sticky tape through carrying the gluey portion, under the accurate position of walking of two tape splicing portions and carrying gluey portion, two pole piece material strips can be stable and evenly adhere to the sticky tape, thereby can improve the problem that the mode reliability of manual tape splicing is relatively poor in current cross cutting equipment at least.

Referring to fig. 1 to fig. 4, fig. 1 is a schematic structural diagram of an embodiment of a pole piece die cutting apparatus provided by the present application (in the drawing, a glue pulling portion 14 is located at a second glue pulling station, a glue carrying portion 11 is located at a glue taking station, two tape receiving portions 121 include a first tape receiving portion 1211 and a second tape receiving portion 1212, which are located at a first material taking station and a second material taking station respectively, and a left feeding roller 6 is located at the end of unreeling towards a tape feeding roller 5); fig. 2 is a schematic structural diagram of another state of the pole piece die-cutting device provided by the application (two tape receiving portions 121 in the figure respectively pick up corresponding pole piece material tapes to a tape receiving station, a tape carrying portion 11 is also positioned at the tape receiving station, the two tape receiving portions 121 comprise two tape winding rollers 121a, the two tape winding rollers 121a are respectively close to each other and start to reversely rotate), fig. 3 is a schematic structural diagram of another state of the pole piece die-cutting device provided by the application (the two tape winding rollers 121a are respectively close to each other and end to reversely rotate, and the pole piece material tapes 3 wound around the two tape winding rollers are respectively spread to the adhesive tapes 4), and fig. 4 is a schematic structural diagram of another state of the pole piece die-cutting device provided by the application (the tape carrying portion 11 in the figure is positioned at the adhesive taking station, the adhesive tape pulling portion 14 is positioned at the first adhesive pulling station, the adhesive tapes 4 are pulled from the limiting portion 15, and the two pole piece material tapes 3 are adhered into a whole by the corresponding adhesive tapes 4).

In an embodiment of the present application, the pole piece tape connecting device 1 is used for connecting two pole piece material tapes 3, the pole piece tape connecting device 1 is provided with a tape connecting station, the pole piece tape connecting device 1 comprises a glue carrying part 11 and two tape connecting parts 121, the glue carrying part 11 is provided with a glue carrying surface 11a, and the glue carrying surface 11a is used for positioning and loading the adhesive tape 4; the tape connecting parts 121 are used for picking up the end parts of the pole piece material tapes 3, at least one of the two tape connecting parts 121 is provided with a tape winding roller 121a, the tape winding roller 121a is rotatably arranged and used for winding the corresponding pole piece material tapes 3, the adhesive carrying parts 11 and the two tape connecting parts 121 can be movably arranged at least partially in the direction close to the tape connecting station, so that the adhesive carrying parts 11 and the two tape connecting parts 121 can be correspondingly positioned at the tape connecting station, opposite movable strokes are arranged between the two tape connecting parts 121 and the adhesive carrying parts 11 at the tape connecting station, so that the two tape connecting parts 121 are respectively abutted to the adhesive carrying surfaces 11a and the end parts of the two pole piece material tapes 3 are adhered to the adhesive tapes 4, and at the tape connecting station, the two tape connecting parts 121 are arranged at intervals along the length direction of the adhesive carrying surfaces 11a, and the tape winding roller 121a can be reversely movable close to the other tape connecting part 121 so as to release the corresponding pole piece material tapes 3 and enable the corresponding pole piece material tapes to be spread and adhered to the adhesive tapes 4.

It should be noted that, in the embodiment of the present application, the specific component is more often referred to as moving along a specific direction, between specific stations, and within a specific movement stroke, for example, in this embodiment, "the adhesive carrying portion 11 and the two adhesive receiving portions 121 can move at least partially in a direction close to the adhesive carrying station", "the two adhesive receiving portions 121 and the adhesive carrying portion 11 have opposite movement strokes, and" the winding roller 121a can move reversely close to the other adhesive receiving portion 121 ", these movements are usually implemented by using a movement limiting device in combination with the driving device 22, where the movement limiting device is used to limit the movement of the specific component within the specific stroke, and the specific structure type of the movement limiting device includes, for example, a linear guide rail, and the driving device 22 is used to drive the specific component to move within the specific stroke limited by the movement limiting device, and in the manufacturing field, the structure type of the movement limiting device in combination with the driving device 22 is more, which the embodiment of the present application is not exhaustive.

The adhesive tape 4 is loaded on the adhesive loading surface 11a of the adhesive loading portion 11, and the adhesive loading surface 11a may be a plane or a curved surface (for example, a curved surface in a wave shape), which is not limited in this embodiment, so long as the end portions of the pole piece material tapes 3 picked up by the two tape receiving portions 121 can be ensured to be adhered to the adhesive tape 4, and the two pole piece material tapes 3 can be ensured to be naturally opened along the tape feeding direction under the action of the tape feeding tension after the tape is connected, wherein, the adhesive loading portion 11 uses the adhesive loading surface 11a to load the adhesive tape 4, for example, the adhesive tape 4 is pressed on the adhesive loading surface 11a by a pressing and limiting mode (for example, only the peripheral local position of the adhesive tape 4 is pressed and limited, the large part of the adhesive tape is not affected), for example, the adhesive tape 4 with viscosity is adopted, one surface of the adhesive tape 4 provides a bonding foundation for the two pole piece material tapes 3, and the other surface can be naturally opened along the tape feeding direction after the tape is connected, so that positioning and bonding (the adhesive tape loading surface 11a can be automatically torn from the adhesive loading surface 11a after the tape is connected).

The two tape receiving portions 121 are provided to pick up the ends of the two pole piece tapes 3 to be attached respectively, and the tape receiving portions 121 pick up the pole piece tapes 3 in various manners, for example, by vacuum suction, and further, for example, by clamping the pole piece tapes 3 in a clamping and limiting manner, which is not limited in this embodiment.

It should be noted that the adhesion manner of the two pole piece material belts 3 and the adhesive tape 4 may be generally divided into two cases, namely, the two pole piece material belts 3 are pressed onto the fixed adhesive tape 4, or the adhesive tape 4 is adhered onto the fixed two pole piece material belts 3, based on this, "the adhesive carrying part 11 and the two adhesive tape parts 121 can be movably arranged at least in part in the direction close to the adhesive carrying part, so that the adhesive carrying part 11 and the two adhesive tape parts 121 can be correspondingly located at the adhesive carrying part station", the adhesive carrying part 11 can be fixedly arranged at the adhesive carrying part station, and the two adhesive tape parts 121 can be moved in the direction close to the adhesive carrying part station, so that the pole piece material belts 3 are picked up at the position far away from the adhesive carrying part station, and then the adhesive carrying part 11a is abutted to the adhesive carrying part 11 in the stroke again, and certainly, the two adhesive carrying part 121 can be always located at the adhesive carrying part 11 (the adhesive carrying part 3 is pulled onto the adhesive carrying part 121 by manpower or other mechanical parts, and the adhesive carrying part 121 can be correspondingly located at the adhesive carrying part 11a between the two adhesive carrying part 11 and the adhesive carrying part 11, and the adhesive carrying part 121 can be stably arranged at the position between the two adhesive carrying part 11 and the adhesive carrying part 11.

"At least one of the two tape receiving portions 121 is provided as the tape roll 121a" may be understood as that only one of the tape receiving portions 121 is provided as the tape roll 121a, and may be understood as that the two tape receiving portions 121 are provided as the tape roll 121a, respectively; after the pole piece material belt 3 is picked up, as the winding roller 121a is rotatably arranged, the winding roller can wind a part of the length of the pole piece material belt 3 on the peripheral side of the winding roller, when the two connecting belt parts 121 are positioned at the connecting belt station and are abutted to the adhesive carrying surface 11a, the two connecting belt parts 121 are arranged at intervals along the length direction of the adhesive carrying surface 11a, the interval distance is such that the winding roller 121a in the two connecting belt parts 121 can reversely move close to the other connecting belt part 121, the reverse movement of the winding roller 121a at the moment is relative to the 'positive rotation' winding movement when the winding roller picks up the pole piece material belt 3, the purpose is to release the part of the length of the pole piece material belt 3 wound by the winding roller to enable the pole piece material belt 3 to be gradually unfolded and adhered to the adhesive belt 4, obviously, the mode of achieving the action is a plurality of modes, such as connecting the roller shaft of the roller 121a to a linear guide rail, driving the roller shaft of the roller 121a to move, the reversing movement of the roller is intersected with the pole piece material belt 3 and the adhesive belt 4 to be directly adhered to the pole piece material belt 4, the mode of the adhesive layer 3 is not adhered to the adhesive layer 4, and the adhesive layer 3 is not uniformly adhered to the pole piece material belt 4 is released, and the adhesive layer 4 is adhered between the pole piece material belt 3 and the pole piece material belt 4 is gradually adhered.

For the solution that the two tape receiving portions 121 are respectively provided as the tape receiving rollers 121a in this embodiment, "the tape receiving rollers 121a can be close to the other tape receiving portion 121 and can be moved reversely, that is, the two tape receiving rollers 121a can be close to each other and can be moved reversely, it should be noted here that the rotation directions of the two tape receiving rollers 121a in the process are opposite and are both relative to the" forward rotation "winding movement when the respective pole piece material tape 3 is picked up, for convenience of understanding, the two tape receiving rollers 121a are now defined as a first tape receiving roller 121a and a second tape receiving roller 121a, the first tape receiving roller 121a is located at the left end of the tape carrying surface 11a of the tape carrying portion 11, the second tape receiving roller 121a is located at the right end of the tape carrying surface 11a of the tape carrying portion 11, at this time the pole piece material tape 3 on the first tape receiving roller 121a is wound counterclockwise on the first tape receiving roller 121a (this means that the first tape receiving roller 121a is wound counterclockwise on the pole piece material tape 3), the first tape receiving roller 121a needs to be moved clockwise, and the second tape receiving roller 121a needs to be wound counterclockwise on the second tape receiving roller 121a clockwise, and the second tape receiving roller 121a needs to be wound counterclockwise on the material receiving roller 3, and the second tape receiving roller 121a rotates clockwise, and the second tape receiving roller needs to roll 3, and releases the tape receiving the second tape receiving roller tape. The two tape winding rollers 121a may be close to each other at the tape receiving station, or may be moved close to each other in succession, which is not limited in this embodiment.

In this embodiment, the adhesive carrying portion 11 and the tape connecting portion 121 can be understood to be movable in the same installation plane, and the three can be movably installed on the same installation base, or can be respectively installed on different installation bases, which is not limited in this embodiment of the present application.

According to the technical scheme provided by the application, the adhesive tape 4 can be positioned and loaded on the adhesive carrying surface 11a of the adhesive carrying part 11, the two tape receiving parts 121 can respectively pick up the end parts of the two pole piece material tapes 3, as the adhesive carrying part 11 and the two tape receiving parts 121 can at least partially move in the direction close to the tape receiving station, and the two tape receiving parts 121 and the adhesive carrying part 11 have opposite movable strokes, the adhesive tape 4 can be adhered to the two pole piece material tapes 3 at the tape receiving station, the tape receiving operation is carried out on the two pole piece material tapes 3 by utilizing the mode that the two tape receiving parts 121 are matched with the adhesive carrying part 11 to act instead of manual tape receiving operation, not only can the pole piece material tapes 3 with a certain length be wound by the tape winding rollers 121a in the two tape receiving parts 121, but also the pole piece material tapes 3 can be gradually released by utilizing the self reversal in the adhering stage and adhered to the adhesive tape 4, the adhesive tape receiving reliability between the pole piece material tapes 3 and the adhesive tape 4 can be ensured, and the tape breakage risk of the pole piece material tapes 3 can be reduced.

Moreover, compared with a manual tape splicing mode, the pole piece tape splicing device 1 provided by the embodiment of the application belongs to mechanical automatic operation, has the advantages of high tape splicing efficiency and good repeated stability, and can reduce the downtime of the pole piece die cutting equipment 100 and improve the production efficiency of the pole piece die cutting equipment 100.

Referring to fig. 5, fig. 5 is a schematic view of a partial enlarged structure of the adhesive supply roller 13, the adhesive pulling portion 14, the limiting portion 15 and the adhesive carrying portion 11 in fig. 1 (the limiting portion 15 is located at a first adhesive pulling station, the adhesive pulling portion 14 is located at a second adhesive pulling station, and the adhesive carrying portion 11 is located at a take-up station in the drawings), in which the pole piece adhesive receiving device 1 further has a take-up station, a first adhesive pulling station and a second adhesive pulling station, which are located at opposite sides of the take-up station, respectively, the pole piece adhesive receiving device 1 further includes a rotatably arranged adhesive supply roller 13 and an adhesive pulling portion 14, the adhesive supply roller 13 is used for unreeling the adhesive tape 4, the adhesive pulling portion 14 is movable between the first adhesive pulling station and the second adhesive pulling station to pick up the adhesive tape 4 on the adhesive supply roller 13 at the first adhesive pulling station, and pull the adhesive carrying portion 4 to the second adhesive pulling station, and the carrier 11 is movable between the take-up station and take-up station to take-up the adhesive 4, and transfer the adhesive carrying portion 11 to the take-up station at the take-up station.

It should be noted that the function of the glue supply roller 13 is to supply the adhesive tape 4 to the first glue pulling station by unwinding through rotation of the glue supply roller 13, and there are various possibilities for the setting position of the glue supply roller 13, for example, the glue supply roller 13 is located close to the first glue pulling station, the unwound adhesive tape 4 can be directly located at the first glue pulling station, which enables the glue pulling portion 14 to pick up the adhesive tape 4 at the first glue pulling position, and for example, the setting position of the glue supply roller 13 is not directly associated with the first glue pulling station and the second glue pulling station, and the unwound adhesive tape 4 can reach the first glue pulling station by adjusting the tape feeding path through other rotating rollers, so that the glue pulling portion 14 can pick up the adhesive tape 4 at the first glue pulling position.

The "the glue pulling portion 14 moves between the first glue pulling station and the second glue pulling station" can be understood as that the glue pulling portion 14 moves back and forth along a straight line or a curved line between the first glue pulling station and the second glue pulling station, which is not limited in this embodiment, similar to the manner that the "the tape receiving portion 121" picks up the pole piece material tape 3, the glue pulling portion 14 can absorb the adhesive tape 4 in a vacuum absorption manner, and also can clamp the adhesive tape 4 in a clamping limiting manner, which is not limited in this embodiment.

The first glue pulling station and the second glue pulling station are respectively positioned at two opposite sides of the glue pulling station, namely, the glue pulling station is positioned between the first glue pulling station and the second glue pulling station, so that when the glue pulling portion 14 pulls the adhesive tape 4 at the first glue pulling station to the second glue pulling station, the adhesive tape 4 can pass through the glue pulling station, the glue carrying portion 11 can position and load the adhesive tape 4 at the glue pulling station, and it is worth mentioning that the adhesive tape 4 at the glue pulling station also needs to be cut, for example, the adhesive tape 4 can be cut in a manual cutting mode, and the adhesive tape 4 can also be cut in a mode of arranging a cutting portion (such as a laser cutting head) at the glue pulling station, and the mode of cutting the adhesive tape 4 is not limited in this embodiment.

According to the above technical scheme, the glue supply roller 13 that rotates and sets up can continuously unreel to first glue station and provide sticky tape 4, and glue portion 14 draws the activity between glue station and the second to draw to glue station with the second to draw the sticky tape 4 of first station department for the sticky tape 4 can pass through and get the glue station, and glue portion 11 can fix a position again and load sticky tape 4 in getting glue station department, and transport it to the tape receiving station, has realized the continuous and automatic supply of sticky tape 4, makes the sticky tape 4 supply frequency of glue portion 11 can be compatible with the pole piece material area 3 pickup frequency of two tape receiving portions 121, ensures the high-efficient of tape receiving operation.

Further, with reference to fig. 5 for a specific manner of keeping the adhesive tape 4 provided by unreeling the adhesive supply roller 13 at the first adhesive pulling station, in some embodiments, the pole piece tape connecting device 1 further includes a limiting portion 15, where the limiting portion 15 is disposed at the first adhesive pulling station and is used for limiting and fixing or loosening the adhesive tape 4 pulled from the adhesive supply roller 13, and the adhesive pulling portion 14 pulls the adhesive tape 4 from the limiting portion 15 at the first adhesive pulling station.

It should be noted that, the limiting portion 15 is disposed at the first glue pulling station, and is capable of fixing or loosening the adhesive tape 4 pulled out from the glue roller 13, so as to keep the adhesive tape 4 at the first glue pulling station, the state of fixing or loosening the adhesive tape 4 by the limiting portion 15 is adapted to the position of the glue pulling portion 14, the loosening state corresponds to the position of the glue pulling portion 14 at the first glue pulling station, the fixing state corresponds to the position of the glue pulling portion 14 at the second glue pulling station, and the limiting portion 15 can absorb the fixed adhesive tape 4 in a vacuum absorption manner or clamp the fixed adhesive tape 4 in a clamping and limiting manner, similar to the manner of picking up the pole piece material tape 3 by the "tape receiving portion 121", which is not limited in this embodiment.

According to the technical scheme, when the adhesive tape 4 extending out of the limiting part 15 is picked up by the adhesive pulling part 14 at the first adhesive pulling station, the limiting part 15 is converted into the loosening state from the fixing state, so that the adhesive pulling part 14 can pull the adhesive tape 4 to the second adhesive pulling station, when the adhesive pulling part 14 pulls the adhesive tape 4 to the second adhesive pulling station, the limiting part 15 is converted back into the fixing state from the loosening state, so that the adhesive tape 4 is re-fixed, after a section of adhesive tape 4 at the adhesive pulling station is cut off and taken away, the adhesive tape 4 at the first adhesive pulling station can be stably kept on the limiting part 15, the subsequent cyclic pickup of the adhesive pulling part 14 is facilitated, and the accuracy of picking up the adhesive tape 4 by the adhesive pulling part 14 can be greatly improved through the setting of the limiting part 15.

With continued reference to fig. 5, in another embodiment, the pole piece tape connecting device 1 further includes a tape cutting portion 16, where the tape cutting portion 16 can be located at a tape taking station correspondingly, so as to cut off the adhesive tape 4 after the adhesive carrying surface 11a of the adhesive carrying portion 11 is located at the tape taking station to carry the adhesive tape 4.

It should be noted that, the "adhesive cutting portion 16" is used for cutting the adhesive tape 4 at the adhesive taking station, the adhesive cutting portion 16 may cut the adhesive tape 4 at two ends of the adhesive carrying surface 11a of the adhesive carrying portion 11 in the length direction, or may cut only the adhesive tape 4 at the position where the adhesive carrying surface 11a of the adhesive carrying portion 11 is close to the first adhesive drawing station, and the reason is that the adhesive tape 4 drawn by the adhesive drawing portion 14 is located at the end, and the adhesive tape 4 can be taken away by the adhesive carrying portion 11 without cutting, only by controlling the adhesive drawing portion 14 to loosen the adhesive drawing portion. The glue cutting portion 16 may be provided as a laser cutting head or as a movable cutting blade, and no matter what type of glue cutting portion 16, the glue cutting portion 16 should be considered to belong to the category of automatic cutting structures.

According to the above technical scheme, through the setting of the adhesive cutting portion 16, the adhesive tape 4 can be automatically cut off after the adhesive tape 4 is positioned and loaded on the adhesive carrying surface 11a of the adhesive carrying portion 11, so as to ensure that the adhesive carrying portion 11 can smoothly leave the adhesive taking station, and compared with a manual adhesive cutting mode, the adhesive cutting portion 16 can be accurately matched with the adhesive taking time of the adhesive carrying portion 11, so that the adhesive cutting operation can be continuously and efficiently completed.

Further, referring to fig. 5 and 6 for a specific setting position of the adhesive cutting portion 16, fig. 6 is a schematic plan view of another view of the adhesive carrier portion in fig. 5, in some embodiments, the adhesive cutting portion 16 is disposed on a side portion of the adhesive carrier portion 11 adjacent to the adhesive carrier surface 11a, and the adhesive cutting portion 16 can stretch and retract in an orientation of the adhesive carrier surface 11a to cut the adhesive tape 4.

It should be noted that, in order to ensure that the adhesive tape 4 between the adhesive carrying portion 11 and the first adhesive pulling station is cut, the "side portion of the adhesive carrying portion 11 adjacent to the adhesive carrying surface 11a where the adhesive cutting portion 16 is disposed" includes at least one side portion of the adhesive carrying portion 11 adjacent to the first adhesive pulling station where the adhesive cutting portion 16 is disposed, as shown in fig. 5. The "adhesive cutting portion 16 can be extended and retracted in the direction of the adhesive carrying surface 11a to cut the adhesive tape 4", it is understood that the adhesive cutting portion 16 has a cutting edge, and the cutting edge can cut the adhesive tape 4 in the moving stroke of the adhesive cutting portion 16 out of the adhesive carrying surface 11 a. There are various ways to drive the glue cutting portion 16 to stretch and retract, such as a cylinder drive, or a magnetic drive, which is not limited in this embodiment.

According to the above technical scheme, with cutting the setting of gluing portion 16 on carrying gluey portion 11, can be along with carrying gluey portion 11 activity, when carrying gluey portion 11 activity to getting gluey station and location loading and finishing sticky tape 4, cutting gluey portion 16 can automatic cutout sticky tape 4, and the sticky tape 4 is intercepted to the gluey portion 11 ration of being convenient for, simultaneously, cuts by the flexible activity of cutting gluey portion 16, and its structure is comparatively simple, is convenient for rely on carrying gluey portion 11 as the installation basis, can reduce the occupation to the installation space on the pole piece cross cutting equipment 100.

With respect to the action logic of the tape abutting portion 121 for picking up the pole piece tape 3 to the tape abutting station, referring to fig. 1 to 4, in some embodiments, the pole piece tape splicing device 1 further has a first material taking station and a second material taking station, the first material taking station and the second material taking station are disposed apart from the tape abutting station, the two tape abutting portions 121 include a first tape abutting portion 1211 and a second tape abutting portion 1212, the first tape abutting portion 1211 is movable between the first material taking station and the tape abutting station for taking the tail end of the pole piece tape 3 on the tape feeding roller 5 at the first material taking station and pulling it to the tape abutting station, and the second tape abutting portion 1212 is movable between the second material taking station and the tape abutting station for taking the head end of the pole piece tape 3 on the full-load feeding roller 6at the second material taking station and pulling it to the tape abutting station.

In the pole piece die cutting device 100, the pole piece receiving device 1 is matched with the feeding roller 5 and the full feed roller 6 to perform continuous feeding operation, and the essence of the pole piece receiving is that after the pole piece material belt 3 on the empty feed roller 6 is unreeled to the feeding roller 5, the tail part of the pole piece material belt 3 on the feeding roller 5 is adhered to the head part of the pole piece material belt 3 on the full feed roller 6 through the adhesive tape 4.

In this embodiment, the first material taking station corresponds to the installation position of the tape feeding roller 5, the tail end of the pole piece material tape 3 on the tape feeding roller 5 passes through the first material taking station, the first tape receiving portion 1211 can receive the tail end of the pole piece material tape 3 on the tape feeding roller 5 at the first material taking station and pull the tail end of the pole piece material tape 3 to the tape receiving station, for example, as shown in fig. 1 to 4, the tail end of the pole piece material tape 3 on the tape feeding roller 5 can keep the tape feeding path unchanged in the unwinding process, and the tape feeding path passes through the first material taking station, so that the tail end of the pole piece material tape 3 on the tape feeding roller 5 can be picked up by the first tape receiving portion 1211 at the first material taking station, then the connection between the tail end of the pole piece material tape 3 and the empty material feeding roller 6 is cut off, and the first tape receiving portion 1211 can move towards the tape receiving station, for example, after the material feeding roller 6 finishes feeding to the tape feeding roller 5, the tail end of the pole piece material tape 3 on the tape feeding roller 5 can naturally drop to the first material taking station, so that the tail end of the pole piece material 3 can be picked up at the first material taking station 1211 at the first material taking station.

In this scheme, the second material taking station corresponds with the mounted position of the feed roller 6, after the full feed roller 6 is mounted, it needs to be ensured that the head end of the pole piece material belt 3 can be kept at the second material taking station, for example, after the full feed roller 6 is mounted, the head end of the pole piece material belt 3 can naturally drop to the second material taking station, for example, after the full feed roller 6 is mounted, the head end of the pole piece material belt 3 can reach the second material taking station under the pulling of the pulling structure, so that the second tape connecting portion 1212 can connect the head end of the pole piece material belt 3 on the full feed roller 6 at the second material taking station.

According to the above technical solution, the first tape receiving portion 1211 is utilized to move between the first material taking station and the tape receiving station, the tail end of the pole piece material tape 3 on the tape taking roller 5 can be taken up and pulled to the tape receiving station, the second tape receiving portion 1212 is utilized to move between the second material taking station and the tape receiving station, the head end of the pole piece material tape 3 on the full material feeding roller 6 can be taken up and pulled to the tape receiving station, thereby realizing automatic taking and transferring of the two pole piece material tapes 3 to be connected, improving the automation degree and the tape receiving efficiency of the pole piece material tape 3.

Regarding the specific positioning and loading manner of the adhesive carrier 11 on the adhesive tape 4, in some embodiments, referring to fig. 6, the adhesive carrier 11 has a plurality of vacuum suction holes 111 on the adhesive carrier 11 a.

It should be noted that "the adhesive carrying surface 11a of the adhesive carrying portion 11 is provided with a plurality of vacuum suction holes 111" means that the adhesive carrying portion 11 positions and loads the adhesive tape 4 by vacuum suction, and for this positioning and loading scheme, the adhesive tape 4 generally adopts a single-sided adhesive tape structure, in which a non-adhesive surface is used for contacting the adhesive carrying surface 11a, and an adhesive surface is used for adhering the pole piece material tape 3.

According to the above technical scheme, the adhesive carrying part 11 adopts the vacuum adsorption mode to position and load the adhesive tape 4, the adhesive tape 4 does not need to reserve redundant area for the pressing and holding mechanism to press and hold, and redundant adhesive tape 4 is not left at the lateral side of the width direction of the pole piece material tape 3, the influence on the tape feeding roller 5 is small, and the adhesive carrying part is easy and efficient to fix and release by the vacuum adsorption mode.

With respect to the specific manner of fixing the tape roller 121a to the pole piece material tape 3, please refer to fig. 7 in combination, wherein fig. 7 is a schematic structural diagram of the tape receiving portion in fig. 1, in some embodiments, the tape roller 121a includes two clamping portions 1211a, and the two clamping portions 1211a are disposed opposite to each other in the rotation direction of the tape roller 121a and can move close to each other to clamp the pole piece material tape 3 therebetween.

It should be noted that, the "tape roller 121a includes two clamping portions 1211a, and the two clamping portions 1211a are disposed opposite to each other in the rotation radial direction of the tape roller 121a and can move close to each other", which means that the structure type and the action logic of the tape roller 121a are similar to the pole piece winding needle structure, and the pole piece winding needle structure is not repeated in the embodiments of the present application. The two clamping portions 1211a can form a clamping interval therebetween in a process of being apart from each other, into which the pole piece material tape 3 can be inserted, and the two clamping portions 1211a can clamp the pole piece material tape 3 in a process of being close to each other.

According to the above technical solution, the winding roller 121a clamps the pole piece material belt 3 through the two clamping portions 1211a, which belongs to a mechanical fixing mode, and the two clamping portions 1211a can make the applied clamping force larger enough to stably clamp the pole piece material belt 3, so as to reduce the probability of falling off the pole piece material belt 3 from the winding roller.

Referring to fig. 1 to 4, the present application further provides a pole piece die cutting device 100, where the pole piece die cutting device 100 includes a pole piece tape connecting device 1, and the specific structure of the pole piece tape connecting device 1 refers to the foregoing embodiment, and since the pole piece die cutting device 100 adopts all the technical solutions of all the foregoing embodiments, at least has all the beneficial effects brought by the technical solutions of the foregoing embodiments, which are not described in detail herein.

With continued reference to fig. 1-4, in some embodiments, the pole piece die cutting apparatus 100 further includes a feed roller 6 and a feed roller 5, the feed roller 6 is configured to unwind the pole piece material tape 3 from the feed roller 5, the pole piece tape splicing device 1 has a first material taking station and a second material taking station, the first material taking station is located between the feed roller 6 and the feed roller 5, the second material taking station is located corresponding to the feed roller 6, the two tape splicing portions 121 of the pole piece tape splicing device 1 include a first tape splicing portion 1211 and a second tape splicing portion 1212, the first tape splicing portion 1211 is movable between the first material taking station and the tape splicing station to take the tail end of the pole piece material tape 3 on the feed roller 5 at the first material taking station, and the second tape splicing portion 1212 is movable between the second material taking station and the tape splicing station to take the head end of the pole piece material tape 3 on the full feed roller 6 at the second station.

It should be noted that, the foregoing embodiments have been explained with respect to the correspondence between the first material taking station, the second material taking station, the tape feeding roller 5 and the material feeding roller 6, and this embodiment will not be repeated.

Further, in some embodiments, two feeding rollers 6 are provided, two feeding rollers 6 are used for alternately feeding the tape running rollers 5, two first material taking stations and two second material taking stations are respectively provided, the first tape connecting portion 1211 moves between the tape connecting station and the two first material taking stations, and the second tape connecting portion 1212 moves between the tape connecting station and the two second material taking stations.

It should be noted that, referring to fig. 1, the first receiving portion 1211 is shown in a first material taking station between the left feeding roller 6 and the tape roller 5, another first material taking station is further provided between the right feeding roller 6 and the tape roller 5, and similarly, the second receiving portion 1212 is shown in a second material taking station corresponding to the right full feeding roller 6, and another second material taking station is also provided corresponding to the left feeding roller 6, and the position states of the other first material taking station and the other second material taking station are not shown in the drawing.

The two feeding rollers 6 are disposed corresponding to the tape running roller 5, and the two feeding rollers 6 may be disposed on the same side of the tape running roller 5 or may be disposed on different sides of the tape running roller 5 (for example, as shown in fig. 1 to 4), and the specific disposition position may depend on the spatial layout of the pole piece die cutting device 100, which is not limited in this embodiment.

According to the technical scheme, the two feed rollers 6 are adopted to alternately unwind the pole piece material belt 3 to the feed roller 5, the other empty feed roller 6 can be replaced by the full feed roller 6 in the process that the currently unwound feed roller 6 gradually runs empty, after the currently unwound feed roller 6 runs empty completely, the pole piece material belt 3 on the feed roller 5 can be immediately connected to the pole piece material belt 3 on the full feed roller 6, and compared with the scheme that a single feed roller 6 unwinds the feed roller 5, the scheme has the advantages that the reel changing action is completed in the process that the feed roller 6 unwinds, the reel changing time is saved, and the shutdown time of the pole piece die cutting equipment 100 is shortened.

In the pole piece die cutting device 100, pole pieces with specific sizes and shapes are generally cut out on the pole piece material belt 3 in the travelling belt through the die cutting device 7, the pole piece material belt 3 is generally required to be fixed in the cutting process of the die cutting device 7, the existing fixing mode for the pole piece material belt 3 is generally realized through a vacuum adsorption structure, however, coating powder on the pole piece material belt 3 may block adsorption holes of the vacuum adsorption structure in the adsorption fixing process, so that the adsorption capacity of the vacuum adsorption structure is weakened, and the adsorption fixing for the pole piece material belt 3 is invalid.

The reason for analyzing the above problem is that, although the fixing effect is better in the early stage of the use of the vacuum adsorption structure, the fixing effect is continuously reduced with the lapse of time, and other clamping structures are used for fixing the pole piece material belt 3, for example, the coating on the pole piece material belt 3 is easily damaged, the product quality is affected, the flexible positioning mode can be considered to limit the movement of the pole piece material belt 3, and the influence on the coating on the pole piece material belt 3 is reduced.

In view of this, please refer to fig. 8 and 9, wherein fig. 8 is a schematic structural diagram of another embodiment of the pole piece die cutting apparatus provided by the present application, fig. 9 is a schematic plan view of another view of the driving device and the tension roller in fig. 8, in some embodiments, the pole piece die cutting apparatus 100 has a material belt stabilizing station, at which a material belt stabilizing device 2 is disposed, the material belt stabilizing device 2 includes a tension detecting portion, a roller assembly 21, a driving device 22 and a control device, the tension detecting portion is used for detecting the tension of the pole piece material belt 3, the roller assembly 21 includes a plurality of rotating rollers 211, the plurality of rotating rollers 211 are used for winding the pole piece material belt 3, the plurality of rotating rollers 211 includes a tension roller 211a and two limit rollers 211b, the two limit rollers 211b are disposed at intervals along a first direction X and are used for supporting one side of the pole piece material belt 3, the tension roller 211a is disposed between the two limit rollers 211b and is capable of being disposed movably along a second direction Y for holding the other side of the material belt 3, the driving device 22 has a roller shaft 221 movable along the second direction Y, the driving portion 221 is connected to the tension detecting portion 221 and the driving device 22 is electrically connected to the tension detecting portion 22.

It should be noted that, in this embodiment, the first direction X and the second direction Y belong to two intersecting directions. The pole piece die cutting device 100 will generally provide the unwinding tension for the pole piece material belt 3 to ensure that the pole piece material belt 3 is stably walked, so the pole piece die cutting device 100 is generally further provided with a tension control system, the tension control system can detect the unwinding tension of the pole piece material belt 3, the tension detection part in the embodiment can also be a part of the tension control system, of course, the tension detection part can also be independently arranged from the tension control system, the effect of the tension detection part is mainly to measure the tension of the pole piece material belt 3, the tension detection part can be a tension detector, and the specific types of the tension detection part are many, and the embodiment is not limited to the above.

The rotation axes of the plurality of rotation rollers 211 are oriented in the same direction, for example, in a third direction intersecting with both the first direction X and the second direction Y, wherein one rotation roller 211 is provided as a tension roller 211a, the other two rotation rollers 211 are provided as limit rollers 211b, the positions of the roller shafts of the two limit rollers 211b are fixed, the roller shafts of the tension rollers 211a are provided on the driving part 221 of the driving device 22, the two limit rollers 211b are supported on one side of the pole piece material belt 3, the tension roller 211a is pressed on the other side of the pole piece material belt 3, and the tension roller 211a can press the pole piece material belt 3 with different activity amounts under the driving of the driving part 221, so that tension is applied to the pole piece material belt 3, and it can be understood that the greater the activity amount by which the tension roller 211a presses the pole piece material belt 3 is, the smaller the tension force born by the pole piece material belt 3 is, conversely, the greater.

The driving device 22 has a driving part 221 movable in the second direction Y, and the driving device 22 is of various types, such as a push rod motor, but not limited to, and meanwhile, the driving device 22 and the tension detecting part are electrically connected through a control device, so as to feedback control the driving device 22 to act according to the detection signal of the tension detecting part, thereby ensuring that Zhang Liwen of the pole piece material belt 3 is positioned in a proper range and preventing the pole piece material belt 3 from shaking along the feeding direction in the die cutting process.

The feedback control logic of the control device is as follows:

Acquiring a detection signal of the tension detection part, and comparing a detection tension value in the detection signal with a preset tension value to acquire a tension difference value between the detection tension value and the preset tension value;

the amount of telescopic activity is determined according to the tension difference and a preset map, and the driving part 221 of the driving device 22 is controlled to move according to the amount of telescopic activity.

It should be noted that, if the difference between the detected tension value and the preset tension value is greater than zero, it means that the tension applied by the tension roller 211a on the pole piece material belt 3 exceeds the tension stabilizing range, and the tension applied by the tension roller 211a needs to be weakened, and if the difference between the detected tension value and the preset tension value is less than zero, it means that the tension applied by the tension roller 211a on the pole piece material belt 3 does not reach the tension stabilizing range, and the tension applied by the tension roller 211a needs to be strengthened. The specific composition and conversion manner of the preset mapping relationship are not limited, so long as the expansion and contraction activity amount matched with the tension difference can be obtained according to the tension difference, so as to control the driving part 221 of the driving device 22 to move with the expansion and contraction activity amount, and apply the tension matched with the tension difference to the polar sheet material belt 3.

According to the technical scheme, through the interval setting of two limit rollers 211b along the first direction X, the movable adjustment interval of the tension roller 211a is provided, in the movable adjustment interval, the tension roller 211a can press and hold the pole piece material belt 3 along the second direction Y under the drive of the driving part 221, and as the control device can control the corresponding action of the driving device 22 according to the pole piece tension detected by the tension detection part, a feedback adjustment mechanism is formed, zhang Liwen of the pole piece material belt 3 can be fixed in a reliable range, the tension fluctuation range of the pole piece material belt 3 before die cutting is controlled, the shaking amplitude of the pole piece material belt 3 along the feeding direction is further controlled, and the die cutting quality is ensured.

Referring to fig. 9, in some embodiments, the driving device 22 includes two driving cylinders 22a, the cylinder rods 221a of the two driving cylinders 22a are respectively connected to two ends of the roller shaft of the tension roller 211a, and the driving part 221 includes the cylinder rods 221a of the two driving cylinders 22 a.

It should be noted that the two driving cylinders 22a should have the same size and be electrically connected to the control device at the same time, so as to receive synchronous control of the control device, so that the two cylinder rods 221a can extend and retract synchronously.

According to the technical scheme, compared with other types of driving modes, the driving cylinder 22a is relatively simple to operate and maintain and easy to install, and more importantly, the driving cylinder 22a can provide quick linear motion, is suitable for feedback adjustment scenes requiring quick response in the embodiment of the application, and the two driving cylinders 22a are arranged to drive the driving cylinders from two ends of a roll shaft of the tension roll 211a respectively, so that bending stress born by the cylinder rod 221a is reduced, the tension roll 211a is controlled to press the pole piece material belt 3, and the deformation amount generated by the driving cylinders is controlled, so that the feedback control precision of the control device is improved.

The specific types of the driving cylinder 22a can be roughly divided into a standard cylinder and a vacuum cylinder, the standard cylinder pushes a piston rod to reciprocate in a sealed cylinder barrel by utilizing the thrust of gas, the vacuum cylinder is formed by two sealed cylinders to form internal and external pressure difference, the piston rod is extruded to move, and the specific structure and the action principle of the vacuum cylinder are not repeated in the embodiment of the application.

In some embodiments, the drive cylinder 22a comprises a vacuum cylinder.

According to the technical scheme, compared with a standard cylinder, the vacuum cylinder has a larger stroke, the adjustable range of the tension roller 211a is larger, the reaction of the vacuum cylinder is quicker, the adjustment sensitivity is improved, and the tension fluctuation range of the pole piece material belt 3 before die cutting can be further reduced.

Further, referring to fig. 9, in some embodiments, the cylinder chambers of the two drive cylinders 22a are in communication with each other.

It should be noted that, depending on the specific type of the driving cylinders 22a, the two driving cylinders 22a may communicate with each other's inner cavities through a breather pipe or vacuum pipe 222 (as shown in fig. 9, in which the two driving cylinders 22a belong to vacuum cylinders).

According to the above technical solution, the cylinder cavities of the two driving cylinders 22a are mutually communicated, so that the internal pressure of the two driving cylinders 22a can be ensured to be at the same level at the same time, the synchronicity of the expansion and contraction activities of the two cylinder rods 221a can be improved, and the feedback control precision of the control device can be further improved.

Referring to fig. 8, in some embodiments, the pole piece die cutting apparatus 100 further has a die cutting station where a die cutting device 7 is disposed, and a web stabilizing station is disposed adjacent to the die cutting station.

In the pole piece die cutting apparatus 100, the specific type of the die cutting device 7 is generally a laser die cutting device 7. The web stabilizing station is typically located upstream of the die cutting station, where the pole piece web 3 is not yet die cut, and is a complete pole piece web 3 whose tension is more easily controlled by the movement of the tension roller 211 a.

According to the technical scheme, the material belt stabilizing station is arranged adjacent to the die cutting station, so that the material belt stabilizing device 2 is beneficial to controlling the tension of the pole piece material belt 3 at the position closest to the die cutting device 7, and the control of the material belt stabilizing device 2 on the tension of the pole piece material belt 3 is ensured to meet the cutting requirement of the die cutting device 7.

The application provides pole piece die cutting equipment 100, which comprises two feeding rollers 6, a tape feeding roller 5, a pole piece tape connecting device 1, a material tape stabilizing device 2 and a die cutting device 7, wherein the pole piece tape connecting device 1 is provided with a tape connecting station, the pole piece tape connecting device 1 comprises a tape carrying part 11, two tape winding rollers 121a, a glue feeding roller 13, a glue pulling part 14 and a limiting part 15, the tape carrying part 11 is provided with a tape carrying surface 11a, the tape carrying surface 11a is used for positioning and carrying adhesive tape 4, the two tape winding rollers 121a are respectively rotatably arranged for picking up the end part of the pole piece material tape 3 and winding the pole piece material tape 3, the tape carrying part 11 and the two tape winding rollers 121a can be movably arranged at least partially in the direction close to the tape connecting station, so that the tape carrying part 11 and the two tape winding rollers 121a can be correspondingly positioned at the tape connecting station, and the two tape winding rollers 121a and the tape carrying part 11 have opposite movable strokes, so that at the tape connecting station, the two tape winding rollers 121a are respectively abutted against the tape carrying surface 11a, And are arranged at intervals along the length direction of the adhesive carrying surface 11a so that the end part of the pole piece material belt 3 is adhered to the adhesive tape 4, and the two tape winding rollers 121a can approach each other and reversely rotate to release the corresponding pole piece material belt 3, And is unfolded and stuck on the adhesive tape 4; the adhesive feeding roller 13 is rotatably arranged and used for unreeling and providing adhesive tape 4, the limiting part 15 is arranged at a first adhesive pulling station and used for limiting, fixing or loosening the adhesive tape 4 pulled out from the adhesive feeding roller 13, the adhesive pulling part 14 moves between the first adhesive pulling station and a second adhesive pulling station to pick up the adhesive tape 4 on the limiting part 15 at the first adhesive pulling station and pull the adhesive tape 4 to the second adhesive pulling station, the adhesive carrying part 11 moves between the adhesive taking station and the adhesive receiving station, positions and carries the adhesive tape 4 at the adhesive taking station and transfers the adhesive tape 4 to the adhesive receiving station, the two feeding rollers 6 are used for alternately unreeling and providing the pole piece material tape 3 to the tape feeding roller 5, a first tape taking station is arranged between the tape feeding roller 5 and each feeding roller 6, a second material taking station is arranged corresponding to each feeding roller 6, the two rollers 121a of the adhesive receiving device 1 comprise a first roller 121a and a second roller 121a, the first tape taking roller 121a moves between the first tape taking station and the two adhesive taking stations, the adhesive taking roller 121a positions and carries out the adhesive tape 4 at the adhesive taking station and transfers the adhesive taking station to the tape taking station, the two feeding rollers 6 are used for reeling and feeding and stabilizing tape 3 is arranged at the end of the tape taking-off station 2, the adhesive taking device is provided with a stable tape taking device is arranged at the end of the first tape taking station and the second tape taking station 2, and a stable tape taking station is arranged at the end of the second tape taking station 2, and a stable tape taking station is provided with a stable tape taking station is used for taking station and a stable tape taking station 2, and a stable tape taking station is arranged between the stable tape taking station and a stable tape taking station 2 takes and has a stable tape taking station and takes, A roller assembly 21, The device comprises two vacuum cylinders and a control device, wherein a tension detection part is used for detecting tension of a pole piece material belt 3, a roller assembly 21 comprises a plurality of rotating rollers 211, the rotating rollers 211 are used for winding the pole piece material belt 3, the rotating rollers 211 comprise tension rollers 211a and two limiting rollers 211b, the two limiting rollers 211b are arranged at intervals along a first direction X and are used for supporting one side of the pole piece material belt 3, the tension rollers 211a are arranged between the two limiting rollers 211b and can be movably arranged along a second direction Y and used for pressing the other side of the pole piece material belt 3, the vacuum cylinders are provided with cylinder rods 221a which stretch and retract along the second direction Y, the cylinder rods 221a of the two vacuum cylinders are respectively connected with two ends of a roller shaft of the tension rollers 211a, inner cavities of the two vacuum cylinders are mutually communicated, and the control device is electrically connected with the driving device 22 and the tension detection part and controls synchronous actions of the two vacuum cylinders according to detection signals of the tension detection part.

It should be noted that the above embodiments are only used to illustrate the technical solution of the present application, but not to limit the technical solution of the present application, and although the detailed description of the present application is given with reference to the above embodiments, it should be understood by those skilled in the art that the technical solution described in the above embodiments may be modified or some or all technical features may be equivalently replaced, and these modifications or substitutions do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the present application, and all the modifications or substitutions are included in the scope of the claims and the specification of the present application. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

Claims

1. A pole piece tape connection device for connecting two pole piece tapes, characterized in that the pole piece tape connection device has a tape connection station, and the pole piece tape connection device comprises:

The adhesive carrying portion has an adhesive carrying surface, and the adhesive carrying surface is used to position and load the adhesive tape; and

Two tape connecting parts, the tape connecting parts are used to pick up the end of the pole piece material tape, at least one of the two tape connecting parts is set as a tape winding roller, and the tape winding roller is rotatably set to wind the corresponding pole piece material tape;

Wherein, at least part of the glue carrying portion and the two tape connecting portions can be movably arranged in a direction close to the tape connecting station, so that the glue carrying portion and the two tape connecting portions can be located at the tape connecting station correspondingly;

At the tape connection station, the two tape connection parts and the adhesive carrier part have a relative movable stroke, so that the two tape connection parts are respectively abutted against the adhesive carrier surface, and the ends of the two electrode strips are adhered to the adhesive tape;

At the tape splicing station, the two tape splicing parts are spaced apart along the length direction of the adhesive carrier surface, wherein the tape winding roller can be reversed close to the other tape splicing part to release the corresponding electrode material tape and unfold it to adhere to the adhesive tape.

2. The electrode tape connection device according to claim 1, characterized in that the electrode tape connection device further comprises a glue taking station, a first glue drawing station and a second glue drawing station, wherein the first glue drawing station and the second glue drawing station are respectively located on opposite sides of the glue taking station;

The pole piece connecting device also includes:

A rotatably arranged adhesive supply roller, the adhesive supply roller being used for unwinding and providing the adhesive tape; and

The adhesive drawing unit moves between the first adhesive drawing station and the second adhesive drawing station to pick up the adhesive tape on the adhesive supply roller at the first adhesive drawing station and draw the adhesive tape to the second adhesive drawing station;

The adhesive carrier moves between the adhesive taking station and the tape splicing station to position and load the adhesive tape at the adhesive taking station and transfer the adhesive tape to the tape splicing station.

3. The pole piece tape connection device according to claim 2, characterized in that the pole piece tape connection device further comprises a limiting portion, the limiting portion is arranged at the first glue drawing station, and is used to limit and fix or loosen the adhesive tape pulled from the glue supply roller;

The adhesive drawing unit draws the adhesive tape from the limiting portion at the first adhesive drawing station.

4. The pole piece connecting device as described in claim 2 is characterized in that the pole piece connecting device also includes a glue cutting part, and the glue cutting part can be located corresponding to the glue taking station, and is used to cut the adhesive tape after the adhesive carrying surface of the adhesive carrying part is positioned and loaded with the adhesive tape at the glue taking station.

5. The electrode tape connection device as described in claim 4 is characterized in that the glue cutting part is arranged on the side of the glue carrying part adjacent to the glue carrying surface, and the glue cutting part can be extended and retracted in the direction of the glue carrying surface to cut the adhesive tape.

6. The pole piece tape splicing device according to any one of claims 1 to 5, characterized in that the pole piece tape splicing device further comprises a first material taking station and a second material taking station, and the first material taking station and the second material taking station are arranged away from the tape splicing station;

The two connecting parts include:

A first tape splicing unit is movable between the first material taking station and the tape splicing station, and is used to take the tail end of the pole piece tape on the tape roller at the first material taking station and pull it to the tape splicing station; and

The second tape splicing part moves between the second material taking station and the tape splicing station, and is used for taking the head end of the pole piece tape on the full material feeding roller at the second material taking station and pulling it to the tape splicing station.

7. The electrode tape connection device according to any one of claims 1 to 5, characterized in that a plurality of vacuum adsorption holes are provided on the adhesive carrying surface of the adhesive carrying portion.

8. The pole piece tape splicing device according to any one of claims 1 to 5, characterized in that the tape winding roller comprises two clamping parts, the two clamping parts are arranged opposite to each other in the rotation radial direction of the tape winding roller and can move close to each other to clamp the pole piece tape therebetween.

9. A pole piece die-cutting device, characterized by comprising a pole piece taping device as claimed in any one of claims 1 to 8.

10. The pole piece die-cutting device according to claim 9, characterized in that the pole piece die-cutting device further comprises a tape-walking roller and a material-feeding roller, wherein the material-feeding roller is used to unwind the pole piece material tape to the tape-walking roller;

The pole piece tape connection device comprises a first material taking station and a second material taking station, wherein the first material taking station is located between the tape walking roller and the material feeding roller, and the second material taking station is arranged corresponding to the material feeding roller;

The two connecting parts of the pole piece connecting device include:

A first tape connection part moves between the first material taking station and the tape connection station, and is used to connect the tail end of the pole piece tape on the tape roller at the first material taking station; and

The second tape connection part moves between the second material taking station and the tape connection station, and is used for connecting the head end of the pole piece tape on the full material feeding roller at the second material taking station.

11. The pole piece die-cutting equipment according to claim 10, characterized in that two feeding rollers are provided, and the two feeding rollers are used to alternately feed the belt-walking roller;

Two of the first material retrieving stations and two of the second material retrieving stations are respectively provided;

The first belt splicing unit moves between the belt splicing station and the two first material taking stations;

The second belt splicing part moves between the belt splicing station and the two second material taking stations.

12. The pole piece die-cutting equipment according to claim 9, characterized in that the pole piece die-cutting equipment has a material strip stabilization station, and a material strip stabilization device is provided at the material strip stabilization station, and the material strip stabilization device comprises:

A tension detection unit, used to detect the tension of the pole piece strip;

A roller assembly, comprising a plurality of rotating rollers, the plurality of rotating rollers are used for winding the pole piece strip, the plurality of rotating rollers include a tension roller and two limiting rollers, the two limiting rollers are arranged at intervals along a first direction and are used to support one side of the pole piece strip, the tension roller is arranged between the two limiting rollers and can be movably arranged along a second direction to press the other side of the pole piece strip;

A driving device includes a driving portion that is telescopically movable along the second direction, wherein the driving portion is connected to the roller shaft of the tension roller; and

The control device is electrically connected to the driving device and the tension detection unit, and controls the driving device to operate according to a detection signal from the tension detection unit.

13. The pole piece die-cutting device according to claim 12, characterized in that the driving device comprises two driving cylinders, and the cylinder rods of the two driving cylinders are respectively connected to the two ends of the roller shaft of the tension roller;

The driving part includes two cylinder rods of the driving cylinders.

14. The pole piece die-cutting device as described in claim 13 is characterized in that the cylinder cavities of the two driving cylinders are connected to each other.

15. The pole piece die-cutting equipment according to any one of claims 12 to 14, characterized in that the pole piece die-cutting equipment further comprises a die-cutting station, and a die-cutting device is provided at the die-cutting station;

The strip stabilizing station is disposed adjacent to the die cutting station.