Roll changing device, rubberizing apparatus, battery production system, and roll changing method

Abstract

The application provides a roll changing device, a rubber bonding device, a battery production system and a roll changing method, and belongs to the technical field of battery production. The roll changing device comprises: at least two feeding mechanisms, one of the at least two feeding mechanisms is used for outputting a working tape to a next station, and the remaining feeding mechanisms are used for outputting standby tapes; at least two connecting platforms are arranged in one-to-one correspondence with the at least two feeding mechanisms, the connecting platforms are used for carrying the head portions of the standby tapes, the connecting platforms are further provided with rubber bonding components, the rubber bonding components are used for carrying connecting tapes; a cutting mechanism is configured to cut off the working tape and move the to-be-connected working tape cut off away from the feeding mechanism in a direction close to the connecting platform where the standby tape is located, so that the tail portion of the to-be-connected working tape corresponds in position to the head portion of the standby tape; and the rubber bonding components are configured to bond the bonding surfaces of the connecting tapes to the tail portion of the to-be-connected working tape and the head portion of the standby tape, respectively.

Description

Technical Field

[0001] This application relates to the field of battery manufacturing technology, and in particular to a roll changing device, adhesive application equipment, battery manufacturing system, and roll changing method. Background Technology

[0002] Energy conservation and emission reduction are key to the sustainable development of the automotive industry, and electric vehicles, due to their energy-saving and environmentally friendly advantages, have become an important component of this sustainable development. For electric vehicles, battery technology is a crucial factor in their development.

[0003] In the battery manufacturing industry, unwinding mechanisms are needed to unwind material rolls used in the battery production process. These rolls can include, but are not limited to, electrodes, separators, and adhesive tapes. When a roll is nearly empty, it needs to be replaced with a new roll, and the new roll's tape is attached to the conveyor belt that is currently running (i.e., the end of the previous roll's tape). Currently, roll replacement is usually done manually, which is time-consuming and detrimental to improving production efficiency. Summary of the Invention

[0004] This application aims to at least address one of the technical problems existing in the background art. Therefore, one objective of this application is to provide a roll-changing device, adhesive application equipment, battery production system, and roll-changing method to solve the problem of long roll-changing time.

[0005] An embodiment of the first aspect of this application provides a roll changing device, comprising: at least two feeding mechanisms, one of which is used to output a working strip to the next station, and the remaining feeding mechanisms are used to output a spare strip; at least two connecting platforms are arranged in a one-to-one correspondence with the at least two feeding mechanisms, the connecting platforms are used to carry the head of the spare strip, and the connecting platforms are also provided with adhesive application components, which are used to carry connecting tape; a cutting mechanism is configured to cut the working strip, wherein the working strip that is cut away from the feeding mechanism is used as the working strip to be connected, and the cutting mechanism is also configured to move the working strip to be connected along the direction close to the connecting platform where the spare strip is located, so that the tail of the working strip to be connected corresponds to the head of the spare strip; and the adhesive application components are configured to adhere the adhesive surface of the connecting tape to the tail of the working strip to be connected and the head of the spare strip, respectively.

[0006] In the technical solution of this application embodiment, by setting a connecting platform corresponding to the feeding mechanism, during the normal conveying of the working material belt, the head of the spare material roll can be placed on the connecting platform, and the connecting tape can be placed on the adhesive applicator, without occupying the time for changing the working material belt. When the working material belt is short, the cutting mechanism can directly cut the working material belt and move the working material belt to be connected towards the connecting platform where the spare material belt is located, so that the tail of the working material belt to be connected corresponds to the head of the spare material belt. This allows the adhesive applicator on the connecting platform to adhere the adhesive surface of the connecting tape to the tail of the working material belt to be connected and the head of the spare material belt, achieving rapid automatic roll changing.

[0007] In some embodiments, the cutting mechanism includes: a cutting platform for placing the work strip to be connected; and a first pressure plate component disposed on the cutting platform for pressing the work strip to be connected against the cutting platform. The cutting mechanism is configured to move the cutting platform along a direction close to the connecting platform where the spare work strip is located, thereby bringing the tail end of the work strip to be connected to correspond with the head end of the spare work strip. The cutting platform and the first pressure plate component can press the work strip firmly to fix it to the cutting platform, increasing the probability of the cutting mechanism successfully moving the cutting platform to bring the tail end of the work strip to be connected to correspond with the head end of the spare work strip, thereby improving roll changing efficiency.

[0008] In some embodiments, the roll changing device further includes: a calibration component connected to a first side of the connecting platform, with the head of the spare strip extending beyond the first side of the connecting platform to align the head of the spare strip with the calibration component; and a cutting mechanism configured to move the cutting platform along a direction close to the calibration component so that the tail of the work strip to be coupled corresponds to the head of the spare strip. This ensures that the head of the spare strip is always placed in the same position, thereby enabling the cutting mechanism to move the work strip along a predetermined route and align the tail of the work strip to be coupled with the head of the spare strip, simplifying roll changing control.

[0009] In some embodiments, the cutting platform includes a first groove, through which the work strip is output to the next station. The cutting mechanism further includes: a cutter assembly including a cutter disposed in the first groove, the cutter assembly being configured to move the cutter along the extending direction of the first groove; and a second pressure plate component including a second pressure plate and a second groove disposed on the second pressure plate, the second pressure plate component being configured to drive the second pressure plate to move until the second groove is directly opposite the first groove, and to press the work strip via the cutting platform between the first groove and the second groove, so that the cutter assembly moves the cutter along the extending direction of the first groove to cut the work strip. That is, during normal conveying of the work strip, the cutting platform is located on the conveyor path of the work strip, and the cutter assembly is disposed in the first groove of the cutting platform. Thus, when the work strip is short of material, there is no need to move the cutting platform; only the second pressure plate component needs to be moved to press the work strip onto the cutting platform, and the cutter can be moved to cut the work strip. This can greatly shorten the interval time from the discovery of a short work strip to the cutting of the work strip, thereby further improving roll changing efficiency.

[0010] In some embodiments, the adhesive applicator is rotatable relative to the connecting platform. The adhesive applicator is configured to: rotate to have the adhesive surface of the connecting tape facing upwards during the conveying of the working tape; and after the tail of the working tape to be connected aligns with the head of the spare tape, rotate to have the adhesive surface of the connecting tape facing downwards to bond the tail of the working tape to be connected and the head of the spare tape. Thus, the inertial force of the downward rotation of the adhesive applicator allows the adhesive surface of the connecting tape to firmly bond the tail of the working tape to be connected and the head of the spare tape, resulting in a high connection strength between the working tape and the spare tape, reducing the likelihood of tape breakage during subsequent conveying of the spare tape.

[0011] In some embodiments, the adhesive application component includes a vacuum suction cup for adsorbing the connecting tape. Fixing the connecting tape by suction facilitates the removal of the connecting tape connecting the tail of the work tape to be coupled and the head of the spare tape after roll changing, without tearing the tail of the work tape to be coupled and the head of the spare tape.

[0012] In some embodiments, the roll changing device further includes a third pressure plate component disposed on the connecting platform. The third pressure plate component includes a third pressure plate and is configured to drive the third pressure plate to move toward the connecting platform to press the spare strip onto the connecting platform. The third pressure plate component is also configured to drive the third pressure plate to move away from the connecting platform, so that the working strip is output to the next station through the gap between the third pressure plate and the connecting platform. That is, when the unwinding mechanism corresponding to the connecting platform outputs a spare strip, the third pressure plate component can fix the spare strip to the connecting platform, which is beneficial for the smooth progress of the next roll changing. When the unwinding mechanism corresponding to the connecting platform outputs a working strip, the third pressure plate component allows the working strip to be transferred to the next station through the connecting platform, thereby not affecting the normal transmission of the working strip.

[0013] In some embodiments, the roll changing device further includes: a first mounting structure, wherein at least two connecting platforms are mounted on the first mounting structure along a first direction, and a cutting mechanism is movably mounted on the first mounting structure along the first direction. This allows the cutting mechanism to move along a fixed route between the two connecting platforms to align the tail end of the working strip with the head end of the spare strip, thereby completing the roll changing and simplifying the roll changing control method.

[0014] In some embodiments, the roll-changing device further includes: a second mounting structure movably mounted on the first mounting structure along a second direction, wherein the connecting platform and the adhesive applicator are both mounted on the first mounting structure via the second mounting structure, and the second direction intersects the first direction; and a first driving component configured to drive the second mounting structure to move along the second direction to move the connecting platform and the adhesive applicator between a first position and a second position, wherein the second position is closer to the cutting mechanism than the first position, and the cutting mechanism is used to move along the first direction so that the tail of the work strip to be connected corresponds to the head of the spare strip on the connecting platform moved to the second position. Thus, when roll changing is not required, the first driving component drives the connecting platform and the adhesive applicator to the first position, facilitating manual pulling of the spare strip onto the connecting platform and manual placement of the connecting tape onto the adhesive applicator for material preparation. Because the first position is far from the cutting mechanism, it can, to some extent, avoid the problem of accidental injury to personnel by the cutting mechanism. The second position is close to the cutting mechanism, which facilitates the cutting mechanism moving the work strip to be connected to the connecting platform at the second position to connect the tail of the work strip to be connected and the head of the spare strip.

[0015] In some embodiments, the roll changing device further includes a first locking mechanism, which is mounted on a first mounting structure and used to lock a second mounting structure that has been moved to a first position in the first position. Thus, when the connecting platform and the adhesive application component are in the first position, and a worker manually places the connecting tape onto the adhesive application component for material preparation, the first locking mechanism can fix the connecting platform and the adhesive application component in the first position, providing safety protection for the worker during material preparation.

[0016] In some embodiments, the roll-changing device further includes: a third mounting structure movably mounted on a first mounting structure along a first direction, the cutting mechanism being mounted on the first mounting structure via the third mounting structure; and at least two second locking mechanisms spaced apart along the first direction, corresponding one-to-one with at least two connecting platforms. The third mounting structure moves along the first direction to pass sequentially through the at least two second locking mechanisms, the second locking mechanisms being configured to lock the position of the third mounting structure when the cutting mechanism moves to any connecting platform. This ensures that the cutting mechanism maintains its relative position to the connecting platforms when it moves to them, improving the success rate of docking between the tail of the working strip and the head of the spare strip.

[0017] In some embodiments, the roll changing device further includes a buffer mechanism, which includes at least one first transfer roller and at least one second transfer roller alternately arranged, the first transfer roller being movable relative to the second transfer roller, and the working strip output by the unwinding mechanism passing through the first and second transfer rollers and then being conveyed to the next station. Thus, during roll changing, when the working strip of the unwinding mechanism stops conveying, the working strip in the buffer mechanism can be conveyed to the next process, achieving roll changing without stopping the machine and without affecting the production cycle.

[0018] In some embodiments, where the roll changing device further includes a third mounting structure, the roll changing device also includes a third transfer roller disposed on the third mounting structure. The third transfer roller is used to convey the working material strip output by the unloading mechanism to the buffer mechanism. Thus, the third transfer roller can move with the cutting mechanism along with the third mounting structure, thereby avoiding to some extent the problem of tape breakage when the cutting mechanism drives the working material strip to move due to insufficient length of the working material strip transmitted between the cutting mechanism and the third transfer roller.

[0019] An embodiment of the second aspect of this application provides an adhesive application device, which includes the roll changing device described in the above embodiments.

[0020] An embodiment of the third aspect of this application provides a battery production system, which includes the roll changing device or the adhesive application equipment described in the above embodiments.

[0021] An embodiment of the fourth aspect of this application provides a roll-changing method, the method comprising: placing the head end of a spare material roll output by one of at least two feeding mechanisms on a connecting platform; in response to a roll diameter of the working material roll output by the at least two feeding mechanisms being less than a preset value, controlling a cutting mechanism to cut the working material roll, wherein the working material roll that is cut away from the feeding mechanism after cutting is designated as the working material roll to be connected; controlling the cutting mechanism to move the working material roll to be connected along a direction close to the connecting platform where the spare material roll is located, so that the tail end of the working material roll to be connected corresponds to the head end of the spare material roll; and controlling an adhesive applicator to adhesively attach the adhesive surface of a connecting tape to the tail end of the working material roll to be connected and the head end of the spare material roll, respectively. During normal conveying of the working material roll, the head end of the spare material roll can be placed on the connecting platform, and the connecting tape can be placed on the adhesive applicator without occupying the roll-changing time of the working material roll. When the working strip is missing, the cutting mechanism can directly cut the working strip and move the working strip to be connected toward the connecting table where the spare strip is located, so that the tail of the working strip to be connected corresponds to the head of the spare strip. This allows the adhesive component on the connecting platform to bond the adhesive surface of the connecting tape to the tail of the working strip to be connected and the head of the spare strip, achieving rapid automatic roll changing.

[0022] In some embodiments, the cutting mechanism includes a cutting platform and a first pressure plate component, the first pressure plate component being disposed on the cutting platform. The method further includes: controlling the first pressure plate component to press the cut work strip tightly onto the cutting platform; controlling the cutting mechanism to move the work strip to be docked along a direction close to the connecting platform where the spare work strip is located, so that the tail of the work strip to be docked corresponds to the head of the spare work strip, including: moving the cutting platform along a direction close to the connecting platform where the spare work strip is located, thereby moving the tail of the work strip to be docked to correspond to the head of the spare work strip. Thus, the work strip can be pressed and fixed onto the cutting platform, increasing the success rate of the cutting mechanism moving the cutting platform to align the tail of the work strip to be docked with the head of the spare work strip, thereby improving roll changing efficiency.

[0023] In some embodiments, the roll changing device further includes: a calibration component connected to a first side of the connecting platform; placing the head of a spare strip output from one of at least two feeding mechanisms onto the connecting platform includes: extending the head of the spare strip beyond the first side of the connecting platform so that the head of the spare strip is aligned with the calibration component; controlling a cutting mechanism to move the work strip to be docked along a direction close to the connecting platform where the spare strip is located so that the tail of the work strip to be docked corresponds to the head of the spare strip includes: moving the cutting platform along a direction close to the calibration component so that the tail of the work strip to be docked corresponds to the head of the spare strip. This ensures that the head of the spare strip is always placed in the same position, allowing the cutting mechanism to move the work strip along a predetermined route and align the tail of the work strip to be docked with the head of the spare strip, simplifying roll changing control.

[0024] In some embodiments, the cutting platform includes a first groove, and the work strip is output to the next station via the cutting platform. The cutting mechanism further includes a cutter assembly and a second pressure plate component. The cutter assembly includes a cutter disposed in the first groove and is configured to move the cutter along the extension direction of the first groove. The second pressure plate component includes a second pressure plate and a second groove disposed on the second pressure plate and is configured to drive the second pressure plate to move. Controlling the cutting mechanism to cut the work strip includes: driving the second pressure plate to move until the second groove is directly opposite the first groove; controlling the second pressure plate to move toward the cutting platform to press the work strip via the cutting platform between the first groove and the second groove; and controlling the cutter assembly to move the cutter along the extension direction of the first groove to cut the work strip. Therefore, during normal conveying of the working material belt, the cutting platform is located on the belt's path, and the cutting blade assembly is positioned within the first groove of the cutting platform. This way, when the working material belt is short of material, there is no need to move the cutting platform. Instead, the second pressure plate component can be moved to press the working material belt onto the cutting platform, and the cutting blade can be moved to cut the working material belt. This can greatly shorten the interval between discovering the lack of material in the working material belt and cutting the working material belt, thereby further improving the roll changing efficiency.

[0025] In some embodiments, the adhesive applicator is rotatable relative to the connecting platform. The method further includes: during the conveying of the working material belt, rotating the adhesive applicator until the adhesive surface of the connecting tape faces upwards; controlling the adhesive applicator to bond the adhesive surface of the connecting tape to the tail of the working material belt to be connected and the head of the spare material belt respectively includes: after the tail of the working material belt to be connected and the head of the spare material belt are aligned, rotating the adhesive applicator until the adhesive surface of the connecting tape faces downwards to bond the tail of the working material belt and the head of the spare material belt. Thus, the inertial force of the downward rotation of the adhesive applicator can be used to firmly bond the adhesive surface of the connecting tape to the tail of the working material belt to be connected and the head of the spare material belt, thereby resulting in a high connection strength between the working material belt and the spare material belt, and reducing the likelihood of belt breakage during subsequent conveying of the spare material belt.

[0026] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0027] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the various drawings denote the same or similar parts or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings depict only some embodiments disclosed in this application and should not be construed as limiting the scope of this application.

[0028] Figure 1 This is one of the structural schematic diagrams of a roll changing device according to some embodiments of this application;

[0029] Figure 2 This is one of the state diagrams showing the corresponding positions of the tail end of the work strip to be docked and the head end of the spare strip in some embodiments of this application;

[0030] Figure 3 This is the second schematic diagram showing the corresponding positions of the tail end of the work strip to be docked and the head end of the spare strip in some embodiments of this application.

[0031] Figure 4 This is the third schematic diagram showing the corresponding positions of the tail end of the work strip to be docked and the head end of the spare strip in some embodiments of this application.

[0032] Figure 5 This is a schematic diagram showing the state when the adhesive surface of the connecting tape in some embodiments of this application is respectively adhered to the tail end of the work tape to be connected and the head end of the spare tape.

[0033] Figure 6 This is a second schematic diagram of the structure of a roll changing device according to some embodiments of this application;

[0034] Figure 7 This is a partial perspective structural diagram of a roll changing device according to some embodiments of this application;

[0035] Figure 8 This is a partial front view schematic diagram of the roll changing device according to some embodiments of this application;

[0036] Figure 9 This is a schematic diagram of the front view structure of the cutting mechanism in some embodiments of this application;

[0037] Figure 10 This is one of the flowcharts for a roll-changing method according to some embodiments of this application;

[0038] Figure 11 This is a second flowchart of a roll-changing method according to some embodiments of this application;

[0039] Figure 12 This is the third flowchart of a roll-changing method according to some embodiments of this application;

[0040] Figure 13 This is the fourth flowchart of a roll-changing method according to some embodiments of this application.

[0041] Explanation of reference numerals in the attached figures:

[0042] Feeding mechanism 101, connecting platform 102, cutting mechanism 103, winding mechanism 104, first mounting structure 105, second mounting structure 106, third mounting structure 107, third transmission roller 108, buffer mechanism 109, first transmission roller 110, second transmission roller 111, guide roller 112, anti-reverse mechanism 113.

[0043] Cutting platform 10, first groove 10a, first pressure plate component 11, first pressure plate 11a, first drive unit 11b, first mounting component 11c, second pressure plate component 12, second pressure plate 12a, second mounting component 12b, second drive unit 12c, third pressure plate component 13, third pressure plate 13a, fourth drive unit 13b, fourth mounting component 13c;

[0044] First mounting plate 21, first connector 22, second groove 23, first sub-drive unit 24, second sub-drive unit 25;

[0045] Calibration component 30, third pin hole 31, fourth pin hole 32;

[0046] 41. Adhesive application platform; 42. Adhesive application mounting component; 43. Vacuum suction cup;

[0047] Second mounting plate 51, second connector 52;

[0048] First slider 61, second slider 62;

[0049] First hollowed-out groove 71, second hollowed-out groove 72;

[0050] Second locking mechanism 81;

[0051] 1. Working material belt, 1a working material belt to be connected, 2. Spare material belt, 3. Connecting tape, 4. Cutting knife assembly, 5. Cutting knife, 6. Third drive unit, 7. Third mounting component;

[0052] First direction X, second direction Y. Detailed Implementation

[0053] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0054] Unless otherwise defined, 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 pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0055] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0056] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0057] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0058] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0059] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0060] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0061] Currently, judging from market trends, the application of power batteries is becoming increasingly widespread. Power batteries are not only used in energy storage systems such as hydropower, thermal power, wind power, and solar power plants, but also extensively used in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in military equipment and aerospace. With the continuous expansion of power battery applications, market demand is also constantly increasing.

[0062] In the field of battery manufacturing and processing, unwinding mechanisms are needed to unwind material rolls during the battery manufacturing and processing process. Material rolls may include, but are not limited to, electrode sheets, separators, tapes, etc.

[0063] When a roll of material is nearly used up, it needs to be replaced with a new roll. For example, the material tape output from the roll to be replaced needs to be cut manually, and the end of the cut material tape is connected to the beginning of the material tape of the new roll. The joint is then sealed with tape to complete the roll replacement.

[0064] Because manual roll changing is used, the equipment needs to be stopped during the roll changing process. Since manual roll changing takes a long time, the equipment downtime is too long and affects the production cycle.

[0065] Based on the above considerations, a roll changing device was designed, including: at least two feeding mechanisms, one of which is used to output the working material strip to the next station, and the remaining feeding mechanism is used to output the spare material strip. The roll changing device also includes a connecting platform corresponding to the feeding mechanism, the head of the spare material strip is placed on the connecting platform, and the connecting platform is also provided with an adhesive applicator, which holds the connecting adhesive tape.

[0066] During normal conveying of the working material belt, the head of the spare roll can be placed on the connecting platform, and the connecting tape can be placed on the adhesive application part without taking up the time for changing the working material belt.

[0067] The roll-changing device also includes a cutting mechanism configured to cut the working strip and move the working strip to be coupled along the connecting platform near the spare strip, so that the tail of the working strip to be coupled aligns with the head of the spare strip. An adhesive applicator is configured to attach the adhesive surface of the connecting tape to the tail of the working strip to be coupled and the head of the spare strip, respectively. When the working strip is short, the cutting mechanism can directly cut the working strip and move the working strip to be coupled towards the connecting platform near the spare strip, so that the tail of the working strip to be coupled aligns with the head of the spare strip. This allows the adhesive applicator on the connecting platform to attach the adhesive surface of the connecting tape to the tail of the working strip to be coupled and the head of the spare strip, achieving rapid automatic roll changing.

[0068] The reel-changing device disclosed in this application can be used for changing the reels of materials required in the battery production process. The reels may include, but are not limited to, electrodes, separators, tapes, etc.

[0069] The batteries disclosed in this application can be used in electrical devices such as vehicles, ships, or aircraft, but are not limited to those used in such devices. A power system for such an electrical device can be constructed using battery cells and batteries as disclosed in this application.

[0070] This application provides an electrical device that uses a battery as a power source. The electrical device can be, but is not limited to, mobile phones, tablets, laptops, electric toys, power tools, electric vehicles, electric cars, ships, spacecraft, etc. Electric toys can include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.

[0071] refer to Figure 1This application provides a roll changing device, including: at least two feeding mechanisms 101, one of which is used to output working material strip 1 to the next station, and the remaining feeding mechanism 101 is used to output spare material strip 2; at least two connecting platforms 102 are arranged one-to-one with the at least two feeding mechanisms 101, the connecting platform 102 is used to carry the head of the spare material strip 2, and the connecting platform 102 is also provided with an adhesive applicator, which is used to carry the connecting tape; a cutting mechanism 103 is configured to cut the working material strip 1, wherein the working material strip that is cut away from the feeding mechanism 101 is used as the working material strip 1a to be connected, and the cutting mechanism is also configured to move the working material strip 1a to be connected along the direction close to the connecting platform 102 where the spare material strip 2 is located, so that the tail of the working material strip 1 to be connected corresponds to the head of the spare material strip 2; the adhesive applicator is configured to adhere the adhesive surface of the connecting tape to the tail of the working material strip 1a to be connected and the head of the spare material strip 2 respectively.

[0072] The feeding mechanism 101 refers to a device used to place the material roll and output the material strip from the roll. For example... Figure 6 As shown, the feeding mechanism 101 can be provided with a feeding shaft, and the material roll is coaxially mounted on the feeding shaft. When one end of the material roll is pulled, the material roll can rotate around the axis of the feeding shaft to output the material strip.

[0073] The feeding shaft can be a roller or wheel used to mount the material roll. The feeding shaft can be set coaxially with the material roll and can rotate with the material roll when the material belt is pulled.

[0074] The feeding shaft of the output working material belt 1 rotates under the action of pulling the working material belt 1, while the feeding shaft of the output spare material belt 2 does not rotate. That is to say, the feeding mechanism 101 of the output working material belt 1 and the feeding mechanism 101 of the output spare material belt 2 are used alternately. When the material roll of the feeding shaft of the currently output working material belt 1 is almost used up, the working material belt 1 is cut off, and the tail of the working material belt 1a to be connected is connected to the head of the spare material belt 2, so that the newly connected spare material belt 2 becomes the working material belt 1. Correspondingly, a new material roll is replaced in the feeding mechanism 101 after the working material belt 1 has been used up, and the material belt output by the feeding mechanism 101 with the new material roll becomes the spare material belt 2.

[0075] As described above, working strip 1 refers to the strip output from the material roll currently in use during production, and spare strip 2 refers to the strip output from the material roll not currently in use during production. The working strip 1a to be docked is the working strip 1 separated from the unloading shaft after it has been cut. Based on the current usage status of the material roll, this embodiment divides the strips output from different unloading mechanisms 101 into working strip 1 and spare strip 2. In reality, the strips output from different material roll mechanisms are of the same material.

[0076] In some embodiments, the number of feeding mechanisms 101 can be two, one feeding mechanism 101 outputs the working material belt 1 to the next station, and the other feeding mechanism 101 outputs the spare material belt 2 as a backup.

[0077] In other embodiments, the number of feeding mechanisms 101 may be three or more, with one feeding mechanism 101 outputting the working material belt 1 to the next station, and the remaining feeding mechanisms 101 outputting the spare material belt 2 as a backup.

[0078] The head of the spare material belt 2 can be the free end of the material roll in the currently unused feeding mechanism 101. When the spare material belt 2 becomes the working material belt 1, pulling the free end of the material roll will cause the material roll to rotate and output the working material belt 1. During the normal conveying of the working material belt 1, the free end of the material roll in the currently unused feeding mechanism 101 can be pulled manually to pull the head of the spare material belt 2 onto the connecting platform 102, waiting to be connected with the tail of the working material belt 1a to be docked.

[0079] The tail end of the work material strip 1a to be connected can be the cut end of the work material strip 1a to be connected cut by the cutting mechanism 103. After cutting the work material strip 1, the cutting mechanism 103 can directly move the work material strip 1a to be connected to the connecting platform 102 where the spare material strip 2 is located by clamping or other means, so that the tail end of the work material strip 1a to be connected corresponds to the head end of the spare material strip 2 placed on the connecting platform 102.

[0080] It is understandable that the position referred to here corresponds to the alignment of the beginning of the spare material belt 2 with the end of the working material belt 1, such as... Figure 2 As shown; alternatively, there may be a slight misalignment between the beginning of the spare material belt 2 and the end of the working material belt 1a to be docked, such as... Figure 3 As shown, the beginning of the spare material strip 2 is slightly higher than the end of the working material strip 1a to be docked, or as shown... Figure 4 As shown, the head of the spare material belt 2 is slightly lower than the tail of the working material belt 1a to be docked.

[0081] The adhesive surface of the connecting tape refers to the adhesive surface of the connecting tape. The adhesive surface can be set in a direction away from the adhesive part, that is, the adhesive surface is the adhesive surface of the connecting tape that is not in contact with the adhesive part.

[0082] The adhesive application component can, after the cutting mechanism 103 moves the work strip 1a to be joined until its tail aligns with the head of the spare strip 2, control the adhesive surface of the connecting tape to adhere to the tail of the work strip 1a and the head of the spare strip 2 respectively, thereby joining the tail of the work strip 1a and the head of the spare strip 2. Figure 5 As shown, Figure 5The diagram shows a schematic of bonding the tail end of the work material strip 1a and the head end of the spare material strip 2 using the adhesive surface of the connecting tape 3. To clearly show the positional relationship between the connecting tape 3 and the tail end of the work material strip 1a and the head end of the spare material strip 2, the diagram is shown. Figure 5 The connecting tape 3 is shown in a form with a certain degree of transparency. In fact, the connecting tape can be either transparent or opaque.

[0083] In some embodiments, the connecting tape can be an identification tape, which can be identified by a color sensor. The connecting tape connects the tail end of the working material belt 1 and the head end of the spare material belt 2 at the joint position. When the working material belt 1 is conveyed to the next station, the identification tape can be identified by the color sensor of the next station, thereby identifying the joint position of the working material belt 1. In some cases, the connecting tape at the joint may stick to other materials due to its adhesiveness. After the joint position of the working material belt 1 is identified by the color sensor, the joint position of the working material belt 1 can be thrown away, so that the connecting tape at the joint of the working material belt 1 does not stick to other materials.

[0084] In some embodiments, the material roll can be a tape roll, and the working tape 1 and spare tape 2 output by the unloading mechanism 101 can be tape. The tape can be electrode protective tape, electrode tab protective tape, or finishing tape. In some embodiments, the tape can be double-sided tape, and the tape roll can further include release paper covering one surface of the double-sided tape. The double-sided tape can be continuously wound into a tape roll with a starting section, and the tape roll has a free end. The release paper is used to act as a spacer between adjacent turns of tape.

[0085] like Figure 6 As shown, in some embodiments, the roll changing device is further provided with a winding mechanism 104 corresponding to at least two unloading mechanisms 101. The winding mechanism 104 is used to synchronously wind the release paper during the output of the working tape (i.e., working material tape 1) by the unloading mechanism 101, so that the release paper is separated from the tape, so that only the tape is output to the next station.

[0086] The winding mechanism 104 can be any mechanism known to those skilled in the art that can perform the winding function, and will not be described in detail here.

[0087] In some embodiments, it can be determined whether the roll of output working material 1 is nearly used up by detecting the roll diameter. For example, if the roll diameter is less than a preset value, it is considered that the roll is nearly used up, and the roll-changing device changes the roll in response to the roll diameter being less than the preset value. In some embodiments, the roll diameter of output working material 1 can be detected by a laser rangefinder. The laser rangefinder is configured corresponding to the unwinding mechanism. The laser rangefinder emits a laser beam towards the roll of output working material 1 on the unwinding mechanism. The laser beam reflected back from the roll is received by a photoelectric element in the laser rangefinder, and the time from emission to reception of the laser beam is measured by a timer in the laser rangefinder. The distance from the starting position of the emitted laser beam to the roll is calculated.

[0088] Assuming that at the beginning of the output of the working material belt 1, the distance from the starting position of the emitted laser detected by the laser rangefinder to the material roll is the first distance, and during the output of the working material belt 1, the distance from the starting position of the emitted laser detected by the laser rangefinder to the material roll is the second distance, the roll diameter can be obtained by subtracting the first distance from the first distance.

[0089] In some embodiments, the roll changing device may include a controller that controls the cutting mechanism 103 to cut the working material strip 1 and move the tail of the working material strip 1a to be docked to correspond to the head of the spare material strip 2 in response to the roll diameter being less than a preset value. The controller also controls the adhesive application component to attach the adhesive surface to the tail of the working material strip 1 to the head of the spare material strip 2 to complete the roll changing.

[0090] In some embodiments, the controller may include, but is not limited to, a PLC (Programmable Logic Controller). The above-described roll changing action is written into a program and stored in the PLC, so that the PLC controls the cutting mechanism 103 and the adhesive application component to perform the corresponding actions to complete the roll changing.

[0091] In the above technical solution, by setting a connecting platform 102 corresponding to the feeding mechanism 101, during the normal conveying of the working material belt 1, the head of the spare material roll can be placed on the connecting platform 102, and the connecting tape can be placed on the adhesive applicator, without occupying the time for changing the working material belt 1. When the working material belt 1 is short of tape, the cutting mechanism 103 can directly cut the working material belt 1 and move the working material belt 1a to be connected toward the connecting platform where the spare material belt 2 is located, so that the tail of the working material belt 1a to be connected corresponds to the head of the spare material belt 2, thereby enabling the adhesive applicator on the connecting platform 102 to adhere the adhesive surface of the connecting tape to the tail of the working material belt 1a to be connected and the head of the spare material belt 2. Since the steps of finding and pulling out the head of the spare material belt 2 and preparing the connecting tape during the roll change are eliminated, rapid automatic roll change can be achieved.

[0092] refer to Figure 7 as well as Figure 8 According to some embodiments of this application, the cutting mechanism 103 includes: a cutting platform 10 for placing the work strip 1a to be connected; a first pressure plate component 11 disposed on the cutting platform 10 for pressing the work strip 1a to be connected onto the cutting platform 10; the cutting mechanism 103 is configured to: move the cutting platform 10 along the direction close to the connecting platform 102 where the spare material strip 2 is located, so as to drive the tail of the work strip 1a to be connected to correspond to the head of the spare material strip 2.

[0093] It is worth noting that, Figures 6 to 8 The diagram only illustrates the positions of the working material belt 1 and the spare material belt 2. The working material belt 1 is output by the lower-positioned feeding mechanism 101, and the spare material belt 2 is output by the upper-positioned feeding mechanism 101. In other embodiments, the working material belt 1 may also be output by the upper-positioned feeding mechanism 101, and the spare material belt 2 may also be output by the lower-positioned feeding mechanism 101.

[0094] Before the cutting mechanism 103 cuts the working material strip 1, the working material strip 1 can be conveyed to the next station via the cutting platform 10. In this way, the cutting mechanism 103 can directly cut the working material strip 1 via the cutting platform 10, and the working material strip 1a to be connected remains on the cutting platform 10, so that the first pressure plate component 11 can press the working material strip 1a to be connected onto the cutting platform 10.

[0095] In some embodiments, during normal conveying of the work strip 1, the work strip 1 may not be conveyed via the cutting platform 10. The cutting mechanism 103 may move the cutting platform 10 below the conveying path of the work strip 1 in response to the output roll diameter of the work strip 1 being less than a preset value, so that the work strip 1 is conveyed via the cutting platform 10, and the cutting mechanism 103 can cut the work strip 1 that has passed through the cutting platform 10.

[0096] In other embodiments, during the normal conveying of the working material belt 1, the cutting platform 10 is always located below the conveying path of the working material belt 1, so that the working material belt 1 is conveyed via the cutting platform 10.

[0097] The conveying of the working material belt 1 via the cutting platform 10 means that the working material belt 1 is conveyed above the cutting platform 10, that is, the cutting platform 10 is located below the conveying path of the working material belt 1.

[0098] During the process of the cutting mechanism 103 moving the work strip 1a to be connected, the first pressure plate component 11 always presses the work strip 1a to be connected against the cutting platform 10, keeping the work strip 1a fixed. After the roll change is completed, in order to allow the work strip 1 to continue to be transported, the first pressure plate component 11 can release the work strip 1.

[0099] In some embodiments, the first pressure plate component 11 may include a first driving unit 11b and a first pressure plate 11a, wherein the first driving unit 11b is used to drive the first pressure plate 11a to move toward or away from the cutting platform 10.

[0100] The first pressure plate component 11 may further include a first mounting member 11c, through which the first pressure plate 11a and the first drive unit 11b are connected. The first pressure plate 11a is disposed on the cutting platform 10, and the first drive unit 11b and the first mounting member 11c may be located on the side of the cutting platform 10 opposite to the first pressure plate 11a. The first mounting member 11c may include a first mounting plate 21 and two first connecting members 22. The two first connecting members 22 are mounted on the first mounting plate 21 and pass through the cutting platform 10 to connect to the two ends of the first pressure plate 11a respectively. The first connecting members 22 are telescopic relative to the first mounting plate 21 and movable relative to the cutting platform 10. The fixed end of the first drive unit 11b is installed on the cutting platform 10, and the movable end of the first drive unit 11b is installed on the first mounting plate 21. The first drive unit 11b drives the movable end to move vertically, thereby driving the first mounting plate 21 to move vertically, causing the first connector 22 to extend and retract, which in turn drives the first pressure plate 11a to move vertically, so that the first pressure plate 11a moves toward the cutting platform 10 or away from the cutting platform 10.

[0101] In some embodiments, the first connecting member 22 can be a telescopic member, which may include, but is not limited to, a telescopic rod, a spring, or other structures capable of telescopic movement. The first driving unit 11b may include, but is not limited to, a cylinder, an electric cylinder, or other structures capable of driving an object to perform linear motion.

[0102] In some embodiments, the controller can control the first drive unit 11b to drive the first pressure plate 11a to move toward or away from the cutting platform 10, so as to press the working material belt 1 or release the working material belt 1.

[0103] In some embodiments, the tail end of the work strip 1a to be connected may be positioned near the edge of the cutting platform 10, and the head end of the spare strip 2 may be positioned near the edge of the connecting platform 102 or extend beyond the edge of the connecting platform 102. The cutting mechanism 103 may move the cutting platform 10 so that the cutting platform 10 and the connecting platform 102 are positioned in accord, so that the tail end of the work strip 1 positioned near the edge of the cutting platform 10 corresponds to the head end of the spare strip 2. The accordance of the cutting platform 10 and the connecting platform 102 may mean that the cutting platform 10 and the connecting platform 102 are at the same height and aligned; or, the cutting platform 10 is slightly lower / slightly higher than the connecting platform 102.

[0104] In the above technical solution, the cutting platform 10 and the first pressure plate component 11 can press the working material strip 1 to fix it to the cutting platform 10, which can increase the success rate of the cutting mechanism 103 moving the cutting platform 10 to drive the tail of the working material strip 1a to be docked to correspond to the head of the spare material strip 2, thereby improving the roll changing efficiency.

[0105] According to some embodiments of this application, the roll changing device further includes: a calibration component 30, which is connected to a first side of the connecting platform 102, with the head of the spare material strip 2 extending out of the first side of the connecting platform 102 so that the head of the spare material strip 2 is aligned with the calibration component 30; and a cutting mechanism 103 is configured to move the cutting platform 10 in a direction close to the calibration component 30 so that the tail of the work material strip 1a to be connected corresponds to the head of the spare material strip 2.

[0106] The first side of the connecting platform 102 is the side of the connecting platform 102 near the cutting mechanism 103, and the calibration component 30 is provided extending out of the first side. The alignment of the head of the spare material strip 2 with the calibration component 30 means that the edge of the head of the spare material strip 2 is aligned with the edge of the calibration component 30 away from the first side.

[0107] Understandably, to achieve efficient roll changing, the cutting mechanism 103 moves the work strip 1a to be connected according to a fixed action and route during each roll changing process. During manual material preparation, the head of the spare strip 2 can be pulled out to align with the calibration component 30, so that the head of the spare strip 2 can be in the same position during each roll changing process. In this way, after the cutting mechanism 103 moves the work strip 1a to be connected according to a fixed action and route during each roll changing process, it can successfully align the tail of the work strip 1a to be connected with the head of the spare strip 2.

[0108] In some embodiments, the calibration component 30 may include a calibration plate, which may be fixed to the first side of the connection platform 102 by adhesive or other means. The number of calibration plates may be at least one, and exemplaryly, there may be two, with the two calibration plates arranged parallel to each other.

[0109] The cutting mechanism 103 can move the cutting platform 10 so that the cutting platform 10 corresponds to the position of the calibration component 30. The positional correspondence between the cutting platform 10 and the calibration component 30 can be that the cutting platform 10 and the calibration component 30 are at the same height and aligned; or, the cutting platform 10 is slightly lower / slightly higher than the calibration component 30.

[0110] In the above technical solution, by aligning the head of the spare material strip 2 with the calibration component 30, the head of the spare material strip 2 is always placed in the same position, so that the cutting mechanism 103 can move the working material strip 1 along a predetermined route and align the tail of the working material strip 1a to be docked with the head of the spare material strip 2, thus simplifying the control of roll changing.

[0111] refer to Figures 7 to 9 According to some embodiments of this application, the cutting platform 10 includes a first groove 10a, and the work material strip 1 is output to the next station via the cutting platform 10. The cutting mechanism 103 further includes: a cutter assembly 4, including a cutter 5 placed in the first groove 10a, the cutter assembly 4 being configured to move the cutter 5 along the extension direction of the first groove 10a; and a second pressure plate component 12, including a second pressure plate 12a and a second groove 23 disposed on the second pressure plate 12a, the second pressure plate component 12 being configured to drive the second pressure plate 12a to move to the second groove 23 facing the first groove 10a, and to press the work material strip 1 via the cutting platform 10 between the first groove 10a and the second groove 23, so that the cutter assembly 4 moves the cutter 5 along the extension direction of the first groove 10a to cut the work material strip 1.

[0112] During normal transport, the cutting platform 10 is always located below the transport path of the work material belt 1, so that the work material belt 1 is transported via the cutting platform 10. In some embodiments, during normal transport, the first pressure plate component 11 controls the first pressure plate 11a to move away from the cutting platform 10, so that there is a gap between the first pressure plate 11a and the cutting platform 10, through which the work material belt 1 is transported.

[0113] In some embodiments, the second pressure plate component 12 may further include a second mounting member 12b and a second driving unit 12c. The second pressure plate 12a is connected to the second driving unit 12c through the second mounting member 12b. The second driving unit 12c is used to drive the second pressure plate 12a to move to the second groove 23 so that it is directly opposite the first groove 10a, and to press the work material strip 1 via the cutting platform 10 between the first groove 10a and the second groove 23.

[0114] The second pressure plate 12a moves to a position where the second groove 23 is directly opposite the first groove 10a, and presses the work material strip 1 transmitted via the cutting platform 10 between the first groove 10a and the second groove 23. This means that the second pressure plate 12a moves above the first groove 10a and presses the work material strip 1 transmitted via the upper part of the cutting platform 10 between the second pressure plate 12a and the cutting platform 10. The first groove 10a and the second groove 23 are directly opposite each other and extend in the same direction. The work material strip 1 to be cut is located between the first groove 10a and the second groove 23. The cutter 5 can be located in the first groove 10a and the second groove 23 so that the second pressure plate 12a presses the work material strip 1 without obstructing the movement of the cutter 5.

[0115] In some embodiments, the second driving unit 12c may include a first sub-driving unit 24 and a second sub-driving unit 25. The first sub-driving unit 24 and the second sub-driving unit 25 are respectively connected to opposite sides of the second mounting member 12b, and the second pressure plate 12a is connected to the second sub-driving unit 25. The first sub-driving unit 24 drives the second mounting member 12b to move in a direction parallel to the surface of the cutting platform 10, thereby moving the second sub-driving unit 25 and the second pressure plate 12a above the first groove 10a, with the second groove 23 directly opposite the first groove 10a. The second sub-driving unit 25 drives the second pressure plate 12a to move in a direction perpendicular to the surface of the cutting platform 10, towards or away from the cutting platform 10. Thus, after the second groove 23 is directly opposite the first groove 10a, the second sub-driving unit 25 can drive the second pressure plate 12a to move towards the cutting platform 10, thereby pressing the workpiece strip 1 between the second groove 23 and the first groove 10a.

[0116] In some embodiments, the first sub-drive unit 24 and the second sub-drive unit 25 may both be structures capable of driving an object to perform linear motion, including but not limited to cylinders, electric cylinders, etc.

[0117] By setting the first sub-drive unit 24 and the second sub-drive unit 25, the second pressure plate 12a can be moved to a position away from the working material belt 1 during normal conveying of the working material belt 1, without affecting the transmission of the working material belt 1. When it is necessary to cut the working material belt 1, the working material belt 1 is pressed to fix the cutting material belt, so that after the cutter 5 cuts the working material belt 1, the cut of the working material belt 1 is flat.

[0118] The first groove 10a penetrates the cutting platform 10. The first groove 10a can be set on the edge of the cutting platform 10 near the connecting platform 102, so that the tail of the cut working material strip 1 is located on the edge of the cutting platform 10 near the connecting platform 102, which is conducive to realizing that the tail of the cut working material strip 1 corresponds to the head of the spare material strip 2.

[0119] refer to Figure 9 The cutter assembly 4 may include a third drive unit 6, a third mounting member 7, and a cutter 5. The cutter 5 is mounted on the third mounting member 7. The third mounting member 7 is movably mounted on the cutting platform 10 along the extension direction of the first groove 10a. The third drive unit 6 is connected to the third mounting member 7 and is used to drive the third mounting member 7 to move along the extension direction of the first groove 10a.

[0120] In some embodiments, the third mounting member 7 may be movably mounted on the side of the cutting platform 10 away from the second pressure plate 12a by means of components including but not limited to slide rails, sliders, etc. The third driving unit 6 may be, but not limited to, a cylinder, an electric cylinder, or other structure capable of driving an object to perform linear motion.

[0121] In some embodiments, the cutting mechanism 103 is further provided with a cutter 5 locking member. The first groove 10a may have a first side and a second side opposite to each other along the extension direction. When cutting the work strip 1 is not required, the cutter assembly 4 controls the cutter 5 to be on the first side; when cutting the work strip 1 is required, the cutter assembly 4 controls the cutter 5 to move from the first side to the second side to cut the work strip 1. The cutter 5 locking member may be provided on the side of the third mounting member 7 away from the cutting platform 10 and corresponding to the first side of the first groove 10a. The cutter 5 locking member is configured to lock the cutter 5 to the first side of the first groove 10a during normal conveying of the work strip 1.

[0122] In some embodiments, the locking component of the cutter 5 may include a first pin cylinder and a first pin connected to the first pin cylinder. The third mounting member 7 has a first pin hole corresponding to the first pin. The first pin cylinder is used to control the first pin to extend into the first pin hole during normal conveying of the working material belt 1 to fix the position of the third mounting member 7, thereby preventing the cutter 5 from moving. The first pin cylinder is also used to control the first pin to retract to leave the first pin hole when the roll diameter of the output working material belt 1 is less than a preset value.

[0123] In some embodiments, the controller can control the second drive unit 12c to drive the second pressure plate 12a to move so as to press the working material strip 1 between the first groove 10a and the second groove 23, and the controller can drive the third drive unit 6 to drive the cutter 5 to move so as to cut the working material strip 1. The controller can also control the first pin cylinder to realize the extension and retraction of the first pin.

[0124] In the above technical solution, during the normal conveying of the working material belt 1, the cutting platform 10 is located on the conveying path of the working material belt 1, and the cutter assembly 4 is set in the first groove 10a of the cutting platform 10. In this way, when the working material belt 1 is short of material, there is no need to move the cutting platform 10. Only the second pressure plate component 12 needs to be moved to press the working material belt 1 onto the cutting platform 10, and the cutter 5 can be moved to cut the working material belt 1. This can greatly shorten the interval time between discovering that the working material belt 1 is short of material and cutting the working material belt 1, thereby further improving the roll changing efficiency.

[0125] According to some embodiments of this application, the adhesive application component is rotatable relative to the connecting platform 102. The adhesive application component is configured to: rotate to the position where the adhesive surface of the connecting tape faces upward during the conveying of the working material belt 1; and rotate to the position where the adhesive surface of the connecting tape faces downward after the tail of the working material belt 1a to be connected aligns with the head of the spare material belt 2, so as to adhere the tail of the working material belt 1a to be connected and the head of the spare material belt 2.

[0126] The adhesive application component may include an adhesive application platform 41, an adhesive application drive unit, and an adhesive application mounting component 42. The adhesive application platform 41 and the adhesive application drive unit can be connected via the adhesive application mounting component 42. The adhesive tape 3 is placed on the adhesive application platform 41. The adhesive application drive unit is used to drive the adhesive application mounting component 42 to rotate, thereby causing the adhesive application platform 41 to rotate, and in turn causing the adhesive tape to rotate so that the adhesive surface faces upward or downward.

[0127] It is worth noting that the terms "adhesive surface facing up" and "adhesive surface facing down" are relative to each other, and the directions of "adhesive surface facing up" and "adhesive surface facing down" can be opposite. For example, "adhesive surface facing up" can mean that the adhesive surface is parallel to the connecting platform 102, and the adhesive surface is positioned away from the connecting platform 102. Figure 7 as well as Figure 8 The adhesive component is shown at the lower connecting platform. The adhesive surface facing down can be the position after rotating the adhesive surface 180° from its previous upward-facing position. For example, the adhesive surface facing down can be positioned with the adhesive surface facing the head of the spare material strip 2, as shown... Figure 7 as well as Figure 8 As shown in the adhesive component located at the upper connecting platform, this allows the adhesive surface to be bonded to the head of the spare material strip 2.

[0128] In some embodiments, the adhesive application drive unit can be a rotary cylinder, which can be mounted on the adhesive application mounting component 42 via a rotating shaft. The drive cylinder rotates the rotating shaft to drive the adhesive application mounting component 42 to rotate. The adhesive application mounting component 42 may include, but is not limited to, a mounting plate or similar structure.

[0129] In some embodiments, the roll-changing device may further include an adhesive-locking component. The adhesive-locking component is used to lock the position of the adhesive-applying component while it rotates to a position where the adhesive surface faces upward. Exemplarily, the adhesive-locking component may include a second pin cylinder and a second pin connected to the second pin cylinder. The second pin cylinder is used to control the second pin cylinder to extend into the rotational path of the adhesive-applying mounting member 42 while the adhesive-applying component rotates to a position where the adhesive surface faces upward, thereby hindering the rotation of the adhesive-applying mounting member 42. The second pin cylinder is also used to control the second pin to retract, allowing the adhesive-applying mounting plate to rotate.

[0130] In some embodiments, the adhesive application drive unit can be controlled by the controller to drive the adhesive application mounting component 42 to rotate, and the second pin cylinder can be controlled by the controller to extend and retract the second pin.

[0131] In the above technical solution, the inertial force of the adhesive component rotating downwards can be used to make the adhesive surface of the connecting tape stick together the tail of the working material tape 1a to be connected and the head of the spare material tape 2, thereby making the connection strength between the working material tape 1 and the spare material tape 2 high, and making it less likely for the spare material tape 2 to break during subsequent tape feeding.

[0132] According to some embodiments of this application, the adhesive application component includes a vacuum suction cup 43, which is used to adsorb and attach adhesive tape.

[0133] The vacuum suction cup 43 can be mounted on the adhesive application platform 41. The vacuum suction cup 43 can create negative pressure to adsorb and attach the adhesive tape. Specifically, the vacuum suction cup 43 is used to adsorb the surface of the adhesive tape that is opposite to the bonding surface, so that the bonding surface can be facing outwards.

[0134] Understandably, during the process of preparing the material to place the connecting tape on the adhesive component, and during roll changing, the vacuum suction cup 43 creates negative pressure to attract the connecting tape. After the roll change is completed, the vacuum suction cup 43 releases the connecting tape so that the working tape 1 can continue to be transported.

[0135] In the above technical solution, the adhesive tape is fixed by adsorption, which makes it easier to remove the adhesive tape connecting the tail of the working material tape 1a to be connected and the head of the spare material tape 2 after the roll change is completed, without tearing the tail of the working material tape 1a to be connected and the head of the spare material tape 2.

[0136] refer to Figure 7 as well as Figure 8According to some embodiments of this application, the roll changing device further includes: a third pressure plate component 13, disposed on the connecting platform 102, the third pressure plate component 13 including a third pressure plate 13a, the third pressure plate component 13 being configured to drive the third pressure plate 13a to move toward the connecting platform 102 to press the spare material strip 2 against the connecting platform 102; the third pressure plate component 13 is also configured to drive the third pressure plate 13a to move away from the connecting platform 102, so that the working material strip 1 is output to the next station through the gap between the third pressure plate 13a and the connecting platform 102.

[0137] In other words, on the connecting platform 102 corresponding to the feeding mechanism 101 that outputs the spare material strip 2, the third pressure plate component 13 presses the spare material strip 2 tightly against the connecting platform 102. On the connecting platform 102 corresponding to the feeding mechanism 101 that outputs the working material strip 1, there is a gap between the third pressure plate 13a and the connecting platform 102, so that the working material strip 1 is conveyed through the gap. Exemplarily, the working material strip 1 is output through the gap between the third pressure plate 13a and the connecting platform 102 to the gap between the cutting platform 10 and the first pressure plate 11a, and finally output to the next station through the gap between the cutting platform 10 and the first pressure plate 11a.

[0138] During roll changing, the third pressure plate component 13 on the connecting platform 102, where the spare material strip 2 is placed, always presses the spare material strip 2 firmly. After the roll changing is completed, the spare material strip 2, which is connected to the tail of the working material strip 1a to be connected, becomes the new working material strip 1. The third pressure plate component 13 controls the third pressure plate 13a to move away from the connecting platform 102, so that the new working material strip 1 can continue to be conveyed through the gap between the third pressure plate 13a and the connecting platform 102. Furthermore, during subsequent conveying, the new working material strip 1 is always conveyed through the gap between the third pressure plate 13a and the connecting platform 102. In this way, there is no need to change the position of the third pressure plate 13a too much, saving roll changing time and improving roll changing efficiency.

[0139] In some embodiments, the third pressure plate component 13 may include a fourth drive unit 13b and a fourth mounting member 13c. The third pressure plate 13a is connected to the fourth drive unit 13b via the fourth mounting member 13c. The fourth drive unit 13b is used to drive the fourth mounting member 13c to move so as to move the third pressure plate 13a toward the connecting platform 102 or away from the connecting platform 102.

[0140] The third pressure plate 13a is disposed on the connecting platform 102. The fourth drive unit 13b and the fourth mounting member 13c can be located on the side of the connecting platform 102 opposite to the third pressure plate 13a. The fourth mounting member 13c may include a second mounting plate 51 and two second connecting members 52. The two second connecting members 52 are mounted on the second mounting plate 51, and the two fourth connecting members pass through the connecting platform 102 to connect the two ends of the third pressure plate 13a respectively. The second connecting members 52 are telescopic relative to the second mounting plate 51 and movable relative to the connecting platform 102. The fixed end of the fourth drive unit 13b is mounted on the connecting platform 102, and the movable end of the fourth drive unit 13b is mounted on the second mounting plate 51. The fourth drive unit 13b drives the movable end to move vertically, thereby causing the second mounting plate 51 to move vertically, causing the second connecting members 52 to telescopically move, and thus causing the third pressure plate 13a to move vertically, so that the third pressure plate 13a moves towards or away from the connecting platform 102.

[0141] In the above technical solution, when the unwinding mechanism corresponding to the connecting platform 102 outputs spare material strip 2, the third pressure plate component 13 can fix the spare material strip 2 to the connecting platform 102, which is conducive to the smooth progress of the next roll change. When the unwinding mechanism corresponding to the connecting platform 102 outputs working material strip 1, the third pressure plate component 13 allows the working material strip 1 to be transferred to the next station via the connecting platform 102, so as not to affect the normal transmission of the working material strip 1.

[0142] According to some embodiments of this application, the roll changing device further includes: a first mounting structure 105, at least two connecting platforms 102 mounted on the first mounting structure 105 along a first direction X, and a cutting mechanism 103 movably mounted on the first mounting structure 105 along the first direction X.

[0143] In other words, during the movement of the cutting mechanism 103 along the first direction X, it can pass through at least two connecting platforms 102.

[0144] During the normal transmission of the working material belt 1, the cutting mechanism 103 can move to the connecting platform 102 through which the working material belt 1 passes, and make the cutting platform 10 located below the transmission path of the working material belt 1, so that the working material belt 1 can also be transmitted to the next station via the cutting platform 10.

[0145] The cutting mechanism 103 responds to the fact that the roll diameter of the output working material belt 1 is less than a preset value, cuts the working material belt 1 transmitted through the cutting platform 10, and moves the cutting platform 10 along the first direction X to move the working material belt 1a to be docked to the connection platform 102 where the spare material belt 2 is located, so that the tail of the working material belt 1a to be docked corresponds to the head of the spare material belt 2.

[0146] In the above technical solution, the cutting mechanism 103 can move along a fixed route between two connecting platforms 102 to complete the docking of the tail of the working material belt 1 and the head of the spare material belt 2, thereby completing the roll change, which helps to simplify the roll change control method.

[0147] According to some embodiments of this application, the roll changing device further includes: a second mounting structure 106, movably mounted on the first mounting structure 105 along the second direction Y, and the connecting platform 102 and the adhesive applicator are both mounted on the first mounting structure 105 through the second mounting structure 106, the second direction Y intersecting the first direction X; a first driving component, configured to drive the second mounting structure 106 to move along the second direction Y to move the connecting platform 102 and the adhesive applicator between a first position and a second position, the second position being closer to the cutting mechanism 103 than the first position, the cutting mechanism 103 being used to move along the first direction X so that the tail of the work strip 1a to be connected corresponds to the head of the spare strip 2 on the connecting platform 102 that has moved to the second position.

[0148] When roll changing is not required, the first driving component can drive the second mounting structure 106 corresponding to the connecting platform 102 where the spare material tape 2 is located, so that the connecting platform 102 and the adhesive application component on the connecting platform 102 move to the first position, away from the cutting mechanism 103. At this time, the spare material tape 2 can be manually pulled out and placed on the connecting platform 102, and the connecting tape can be manually placed on the adhesive application component for material preparation. When roll changing is required, for example, in response to the roll diameter of the output working material tape 1 being less than a preset value, the first driving component drives the connecting platform 102 where the spare material tape 2 is located and the adhesive application component on the connecting platform 102 to move to the second position. After cutting the working material tape 1, the cutting mechanism 103 moves the cutting platform 10 along the first direction X so that the cutting platform 10 corresponds to the position of the connecting platform 102 at the second position, so that the tail of the working material tape 1a to be connected corresponds to the head of the spare material tape 2.

[0149] In some embodiments, when no roll change is required, the first driving component can drive the second mounting structure 106 corresponding to the connecting platform 102 through which the working material belt 1 passes to move, so that the connecting platform 102 and the adhesive application component on the connecting platform 102 move to the second position, so that the distance between the connecting platform 102 and the cutting platform 10 is closer, which is beneficial for the working material belt 1 to be output to the next station after passing through the connecting platform 102 and then through the cutting platform 10.

[0150] In other embodiments, when roll changing is not required, the first drive component can also drive the second mounting structure 106 corresponding to the connecting platform 102 through which the working material belt 1 passes to move, so that the connecting platform 102 and the adhesive application component on the connecting platform 102 are moved to the first position, and during roll changing, the connecting platform 102 and the adhesive application component on the connecting platform 102 are moved to the second position.

[0151] In some embodiments, the second mounting structure 106 can be movably mounted to the first mounting structure 105 along the second direction Y via a first sliding component. The first sliding component may include a first slide rail (not shown) and a first slider 61. The first slide rail may be disposed on the second mounting structure 106, and the first slider 61 may be disposed on the first mounting structure 105. The first slider 61 may move relative to the first slide rail along the second direction Y, thereby causing the second mounting structure 106 to move relative to the first mounting structure 105 along the second direction Y.

[0152] In some embodiments, the first mounting structure 105 may include a first slot 71 extending along a second direction Y, and a first slider 61 disposed on one side of the first slot 71 such that the second mounting structure 106 is disposed across the first slot 71. A first driving component is disposed on the side of the first mounting structure 105 away from the second mounting structure 106 and is connected to the second mounting structure 106 through the first slot 71. The first driving component drives the first mounting structure 105 to move along the second direction Y.

[0153] In some embodiments, the first driving component may include, but is not limited to, a servo motor or other mechanism capable of driving an object to perform linear motion.

[0154] In some embodiments, the second mounting structure 106 may be a plate-like structure.

[0155] In some embodiments, the second direction Y can be perpendicular to the first direction X, wherein the first direction X can be a vertical direction.

[0156] In some embodiments, the first driving component can be controlled by a controller to drive the movement of the second mounting structure 106.

[0157] In the above technical solution, when roll changing is not required, the first driving component drives the connecting platform 102 and the adhesive applicator to the first position, facilitating manual pulling of the spare material tape 2 onto the connecting platform 102 and manual placement of the connecting adhesive tape onto the adhesive applicator for material preparation. Since the first position is located away from the cutting mechanism 103, it can, to some extent, avoid the problem of accidental injury from the cutting mechanism 103. The second position is located close to the cutting mechanism 103, which facilitates the cutting mechanism 103 moving the work material tape 1a to be connected to the connecting platform 102 at the second position to receive and connect the tail of the work material tape 1a and the head of the spare material tape 2.

[0158] According to some embodiments of this application, the roll changing device further includes: a first locking mechanism (not shown), which is mounted on the first mounting structure 105 and is used to lock the second mounting structure 106, which has been moved to the first position, in the first position.

[0159] The first locking mechanism can be installed on the first mounting structure 105 and is set corresponding to the first position. Since the connecting platform 102 and the adhesive application component are both installed on the second mounting structure 106, when the second mounting structure 106 moves to the first position and the second position, it will drive the connecting platform 102 and the adhesive application component to move to the first position and the second position.

[0160] In some embodiments, the first locking mechanism may include a third pin cylinder and a third pin connected to the third pin cylinder. The second mounting structure 106 has a third pin hole 31 corresponding to the third pin. The third pin cylinder is used to control the third pin to extend into the third pin hole 31 when the second mounting structure 106 moves to the first position, so as to fix the position of the second mounting structure 106. The third pin cylinder is also used to control the third pin to retract to leave the third pin hole 31 when the roll diameter of the output working material belt 1 is less than a preset value, so that the first driving component can drive the second mounting structure 106 to move to the second position.

[0161] In some embodiments, the extension and retraction of the third pin can be achieved by controlling the third pin cylinder through a controller.

[0162] In the above technical solution, when the connecting platform 102 and the adhesive application component are in the first position, and the worker places the connecting tape on the adhesive application component for material preparation, the first locking mechanism can fix the connecting platform 102 and the adhesive application component in the first position, providing safety protection for the worker's material preparation.

[0163] refer to Figure 7According to some embodiments of this application, the roll changing device further includes: a third mounting structure 107 movably mounted on a first mounting structure 105 along a first direction X, wherein the cutting mechanism 103 is mounted on the first mounting structure 105 via the third mounting structure 107; and at least two second locking mechanisms 81 disposed at intervals along the first direction X corresponding one-to-one with at least two connecting platforms 102, wherein the third mounting structure 107 moves along the first direction X to pass through at least two second locking mechanisms 81 in sequence, and the second locking mechanisms 81 are configured to lock the position of the third mounting structure 107 when the cutting mechanism 103 moves to any connecting platform 102.

[0164] In some embodiments, the third mounting structure 107 can be movably mounted to the first mounting structure 105 along the first direction X via a second sliding component. The second sliding component may include a second slide rail (not shown) and a second slider 62. The second slide rail may be disposed at the second end of the third mounting structure 107, and the second slider 62 may be disposed at the first mounting structure 105. The second slider 62 can move relative to the second slide rail along the first direction X, thereby causing the third mounting structure 107 to move relative to the first mounting structure 105 along the first direction X.

[0165] In some embodiments, the cutting mechanism 103 may include a second driving component for driving the third mounting structure 107 to move along a first direction X.

[0166] The first mounting structure 105 may include a second hollow slot 72 extending along a first direction X. A second slider 62 is disposed on one side of the second hollow slot 72, such that the third mounting structure 107 is disposed across the second hollow slot 72. A second driving component is disposed on the side of the first mounting structure 105 away from the third mounting structure 107 and is connected to the third mounting structure 107 through the second hollow slot 72. The second driving component may include, but is not limited to, a servo motor or other mechanism capable of driving an object to perform linear motion. In some embodiments, the movement of the third mounting structure 107 can be controlled by a controller using the second driving component.

[0167] In some embodiments, the third mounting structure 107 may be a plate-like structure.

[0168] The number of second locking mechanisms 81 is the same as the number of connecting platforms 102. During normal conveying of the working material belt 1, the third mounting structure 107 can move to the connecting platform 102 through which the working material belt 1 passes, thereby moving the cutting platform 10 below the conveying path of the working material belt 1, so that the working material belt 1 is conveyed to the next station via the cutting platform 10. At this time, the second locking mechanism 81 corresponding to the position of the connecting platform 102 through which the working material belt 1 passes locks the position of the third mounting structure 107 to keep the cutting platform 10 below the conveying path of the working material belt 1. During roll changing, the third mounting structure 107 can move to the connecting platform 102 where the spare material belt 2 is located, thereby moving the tail of the working material belt 1a to be docked to a position corresponding to the head of the spare material belt 2. At this time, the second locking mechanism 81 corresponding to the position of the connecting platform 102 where the spare material belt 2 is located can lock the third mounting structure 107 to the position corresponding to the position of the connecting platform 102 where the spare material belt 2 is located.

[0169] In some embodiments, the second locking mechanism 81 may include a fourth pin cylinder and a fourth pin connected to the fourth pin cylinder. The third mounting structure 107 has a fourth pin hole corresponding to the fourth pin. The fourth pin cylinder is used to control the fourth pin to extend into the fourth pin hole 32 when the third mounting structure 107 moves to the corresponding connecting platform 102, so as to fix the position of the third mounting structure 107. The third pin cylinder is also used to control the fourth pin to retract to leave the fourth pin hole 32 when the roll diameter of the output working material belt 1 is less than a preset value.

[0170] In some embodiments, the extension and retraction of the fourth pin can be achieved by controlling the fourth pin cylinder through a controller.

[0171] In some embodiments, the cutting mechanism 103 further includes a second pressure plate component 12, wherein the second drive unit 12c may be mounted on the third mounting structure 107.

[0172] In the above technical solution, by setting a second locking mechanism 81, the cutting mechanism 103 can maintain its relative position to the connecting platform 102 when it moves to the connecting platform 102, thereby improving the success rate of docking between the tail of the working material belt 1 and the head of the spare material belt 2.

[0173] refer to Figure 6 According to some embodiments of this application, the roll changing device further includes a buffer mechanism 109, which includes at least one first transfer roller 110 and at least one second transfer roller 111 arranged alternately. The first transfer roller 110 is movable relative to the second transfer roller 111. The working material belt 1 output by the feeding mechanism 101 passes through the first transfer roller 110 and the second transfer roller 111 and is then transported to the next station.

[0174] During normal transport of the working material belt 1, the working material belt 1 passes through the first transfer roller 110 and the second transfer roller 111 to be conveyed to the next station. During roll changing, in other words, when it is detected that the roll diameter of the output working material belt 1 is less than a preset value, the working material belt 1 stops being conveyed to the first transfer roller 110 and the second transfer roller 111. Exemplarily, the buffer mechanism 109 is provided with an anti-reverse mechanism 113, which allows the working material belt 1 to pass through the anti-reverse mechanism 113 to be conveyed to the first transfer roller 110 and the second transfer roller 111 during normal transport. When it is detected that the roll diameter of the output working material belt 1 is less than the preset value, the anti-reverse mechanism 113 clamps the working material belt 1, stopping the transport of the working material belt 1.

[0175] The first transfer roller 110 and the second transfer roller 111 are movable. Thus, during roll changing, the first transfer roller 110 can be controlled to move closer to the second transfer roller 111 to shorten the distance between the first transfer roller 110 and the second transfer roller 111. This reduces the length of the working material strip 1 located between the first transfer roller 110 and the second transfer roller 111, allowing the portion of the working material strip 1 originally located between the first transfer roller 110 and the second transfer roller 111 to be used for transfer to the next station, achieving roll changing without stopping the machine.

[0176] In the above technical solution, when the working material belt 1 of the unwinding mechanism stops transmitting during the roll changing, the working material belt 1 in the buffer mechanism 109 can be transported to the next process, realizing material changing without stopping the machine and without affecting the production cycle.

[0177] According to some embodiments of this application, when the rewinding device further includes a third mounting structure 107, the rewinding device further includes a third transfer roller 108 disposed on the third mounting structure 107, the third transfer roller 108 being used to convey the working material belt 1 output by the unloading mechanism 101 to the buffer mechanism 109.

[0178] Understandably, during roll changing, the working strip 1 stops being fed to the first transfer roller 110 and the second transfer roller 111. Exemplarily, the working strip 1 output from the third transfer roller 108 can be fed to the anti-reverse mechanism 113, and then transmitted to the first transfer roller 110 and the second transfer roller 111 via the anti-reverse mechanism 113. The anti-reverse mechanism 113 clamps the working strip 1, stopping its transmission, thus ensuring that the length of the working strip 1 between the third transfer roller 108 and the buffer mechanism 109, and between the third transfer roller 108 and the cutting platform 10, are fixed. If the third transfer roller 108 does not move along with the working strip 1 while the cutting mechanism 103 is moving, insufficient length of the working strip 1 between the third transfer roller 108 and the cutting platform 10 can lead to excessive tension in the working strip 1, resulting in strip breakage.

[0179] In this embodiment, the third transmission roller 108 is disposed on the third mounting structure 107, so that when the third mounting structure 107 moves the cutting platform 10, it can move the third transmission roller 108 along with the cutting platform 10, thereby changing the distance between the third transmission roller 108 and the buffer mechanism 109. This allows a portion of the working material belt 1 between the buffer mechanism 109 and the third transmission roller 108 to be moved between the third transmission roller 108 and the cutting platform 10, thereby reducing the tension of the working material belt 1 during the movement of the working material belt 1 by the cutting platform 10.

[0180] In other embodiments, to better control the transmission direction of the working material belt 1, a guide roller 112 is also provided in the buffer mechanism 109. The guide roller 112 is arranged adjacent to the third transmission roller 108. The working material belt 1 output from the third transmission roller 108 is transmitted to the first transmission roller 110 and the second transmission roller 111 after passing through the guide roller 112. The guide roller 112 can move along the first direction X, so that when the third mounting structure 107 drives the cutting platform 10 to move, the guide roller 112 can move with the cutting platform 10, thereby reducing the tension of the working material belt 1 during the movement of the cutting platform 10. The guide roller 112 can be movably mounted in the buffer mechanism 109 along the first direction X through a slide rail, slider, or other structure.

[0181] In the above technical solution, the third transmission roller 108 can move together with the third mounting structure 107 and the cutting mechanism 103, which to a certain extent avoids the problem of belt breakage when the cutting mechanism 103 drives the working material belt 1 to move due to insufficient length of the working material belt 1 transmitted between the cutting platform 10 and the third transmission roller 108.

[0182] This application provides an adhesive application device, which includes the roll changing device described in the above embodiments.

[0183] The tape application equipment can be used to apply tape to objects to be processed. For example, the tape application equipment can apply tape to electrode sheets, electrode tabs, or the end of a wound battery cell. The working tape 1 and the spare tape 2 output by the unloading mechanism 101 in the roll changing device are both tapes, used to output the tape to the next station for tape application.

[0184] This application provides a battery production system, which includes the roll changing device or the adhesive application equipment described in the above embodiments.

[0185] Reference Figures 1 to 4 as well as Figure 10 This application provides a roll changing method, which can be applied to the roll changing device in the above embodiments. The method includes:

[0186] S110, the head of the spare material belt 2 output by one of the at least two feeding mechanisms 101 is placed on the connecting platform 102;

[0187] S120, in response to the fact that the roll diameter of the output working material strip 1 in at least two feeding mechanisms 101 is less than a preset value, the cutting mechanism 103 is controlled to cut the working material strip 1, wherein the working material strip that is cut away from the feeding mechanism is used as the working material strip to be docked.

[0188] S130, control the cutting mechanism 103 to move the work material 1a to be docked along the direction close to the connecting platform 102 where the spare material 2 is located, so that the tail of the work material 1a to be docked corresponds to the head of the spare material 2.

[0189] S140, control the adhesive applicator to attach the adhesive surface of the connecting tape to the tail of the work tape 1a to be connected and the head of the spare tape 2 respectively.

[0190] The method for the feeding mechanism 101 to output the spare material belt 2 and the working material belt 1 can be referred to the relevant description in the above embodiments, and will not be repeated here.

[0191] In S110, during the normal conveying of the working material belt 1, the free end of the material roll in the currently unused unloading mechanism 101 can be pulled manually to pull the head of the spare material belt 2 onto the connecting platform 102, waiting to be docked with the tail of the working material belt 1a to be docked.

[0192] In S120, the roll diameter of the output working material belt 1 can be detected by a laser rangefinder. The method can be referred to the relevant description of the method of detecting the roll diameter of the output working material belt 1 using a laser rangefinder in the above embodiment, and will not be repeated below.

[0193] In S130, the definition of the corresponding position of the tail of the working material belt 1a to be docked and the head of the spare material belt 2 can be referred to the relevant description in the above embodiment, and will not be repeated here.

[0194] In S140, after the cutting mechanism 103 moves the work strip 1a to be connected until the tail of the work strip 1a corresponds to the head of the spare strip 2, the adhesive component controls the adhesive surface of the connecting tape to be bonded to the tail of the work strip 1a and the head of the spare strip 2 respectively, so as to connect the tail of the work strip 1a and the head of the spare strip 2.

[0195] S110 can be executed manually, while S120 to S140 can be executed by the controller.

[0196] In the above technical solution, during the normal conveying of the working material belt 1, the head of the spare material roll can be placed on the connecting platform 102, and the connecting tape can be placed on the adhesive applicator, without occupying the time for changing the working material belt 1. When the working material belt 1 is out of tape, the cutting mechanism 103 can directly cut the working material belt 1 and move the working material belt 1a to be connected toward the connecting table where the spare material belt 2 is located, so that the tail of the working material belt 1a to be connected corresponds to the head of the spare material belt 2. This allows the adhesive applicator on the connecting platform 102 to adhere the adhesive surface of the connecting tape to the tail of the working material belt 1a to be connected and the head of the spare material belt 2, thereby achieving rapid automatic roll changing.

[0197] Reference Figures 7 to 8 as well as Figure 11 According to some embodiments of this application, the cutting mechanism 103 includes a cutting platform 10 and a first pressure plate component 11, the first pressure plate component 11 being disposed on the cutting platform 10, and the method further includes:

[0198] S1201, control the first pressure plate component 11 to press the cut work material strip 1 tightly onto the cutting platform 10.

[0199] S130 includes: moving the cutting platform 10 along the direction close to the connecting platform 102 where the spare material belt 2 is located, so as to move the tail of the work material belt 1a to be docked to correspond to the head position of the spare material belt 2.

[0200] S1201 can be executed after S120.

[0201] The structure of the first pressure plate component 11 and the method of pressing the working material strip 1 against the cutting platform 10 can be referred to the relevant description in the above embodiments, and will not be repeated below.

[0202] During the execution of S130, the first pressure plate component 11 is controlled to continuously press the cut work strip 1 against the cutting platform 10.

[0203] In some embodiments, the roll-changing device includes a first mounting structure 105, with at least two connecting platforms 102 mounted on the first mounting structure 105 along a first direction X, and a cutting mechanism 103 movably mounted on the first mounting structure 105 along the first direction X. The roll-changing device also includes a third mounting structure 107, which is movably mounted on the first mounting structure 105 along the first direction X. The cutting mechanism 103 may further include a second driving component for driving the third mounting structure 107 to move along the first direction X. The mounting methods of the third mounting structure 107, the second driving component, and the first mounting structure 105 can be referred to the relevant descriptions in the above embodiments, and will not be repeated hereafter.

[0204] In S130, the first mounting structure 105 can be moved along the first direction X by the second driving component, so as to move the cutting platform 10 along the first direction X to the position corresponding to the connection platform 102 where the spare material strip 2 is located.

[0205] In some embodiments, at least two connecting platforms 102 are mounted on the first mounting structure 105 along the first direction X. During the movement of the cutting mechanism 103 along the first direction X, it can pass through at least two connecting platforms 102, so that the cutting mechanism 103 can move between the two connecting platforms 102 along a fixed route to complete the docking of the tail of the working material belt 1 and the head of the spare material belt 2.

[0206] In the above technical solution, the working material strip 1 can be pressed and fixed on the cutting platform 10, which can increase the success rate of the cutting mechanism 103 moving the cutting platform 10 to drive the tail of the working material strip 1a to be docked to correspond to the head of the spare material strip 2, thereby improving the roll changing efficiency.

[0207] Reference Figures 7 to 8 as well as Figure 12 According to some embodiments of this application, the roll changing device further includes a calibration component 30, which is connected to the first side of the connection platform 102.

[0208] S110 includes extending the head of the spare material strip 2 out of the first side of the connecting platform 102 so that the head of the spare material strip 2 is aligned with the calibration component 30.

[0209] S130 includes: moving the cutting platform 10 in a direction close to the calibration component 30 so that the tail of the work strip 1a to be docked corresponds to the head of the spare strip 2.

[0210] The methods for executing S110 and S130 can be found in the descriptions in the above embodiments, and will not be repeated hereafter.

[0211] In the above technical solution, the head of the spare material strip 2 is always placed in the same position, so that the cutting mechanism 103 can move the working material strip 1 along a predetermined route and align the tail of the working material strip 1a to be docked with the head of the spare material strip 2, simplifying the control of roll changing.

[0212] Reference Figures 7 to 9 as well as Figure 13According to some embodiments of this application, the cutting platform 10 includes a first groove 10a, and the working material belt 1 is output to the next station via the cutting platform 10. The cutting mechanism 103 further includes a cutter assembly 4 and a second pressure plate component 12. The cutter assembly 4 includes a cutter 5 placed in the first groove 10a. The cutter assembly 4 is configured to move the cutter 5 along the extension direction of the first groove 10a. The second pressure plate component 12 includes a second pressure plate 12a and a second groove 23 disposed in the second pressure plate 12a. The second pressure plate component 12 is configured to drive the second pressure plate 12a to move.

[0213] The cutting mechanism 103 controls the cutting work strip 1, which includes:

[0214] S121, drive the second pressure plate 12a to move until the second groove 23 is directly opposite the first groove 10a;

[0215] S122, control the second pressure plate 12a to move toward the cutting platform 10 so as to press the work material strip 1 via the cutting platform 10 between the first groove 10a and the second groove 23;

[0216] S123, control the cutter assembly 4 to move the cutter 5 along the extension direction of the first groove 10a to cut the working material strip 1.

[0217] The methods for performing S121, S122, and S123 can be found in the descriptions in the above embodiments, and will not be repeated here.

[0218] In some embodiments, the roll changing device further includes a third pressure plate component 13 disposed on the connecting platform 102, the third pressure plate component 13 including a third pressure plate 13a. On the connecting platform 102 corresponding to the feeding mechanism 101 for outputting the spare material strip 2, the third pressure plate component 13 presses the spare material strip 2 tightly against the connecting platform 102. On the connecting platform 102 corresponding to the feeding mechanism 101 for outputting the working material strip 1, there is a gap between the third pressure plate 13a and the connecting platform 102, so that the working material strip 1 is conveyed through the gap.

[0219] The working material belt 1 can be output through the gap between the third pressure plate 13a and the connecting platform 102 to the gap between the cutting platform 10 and the first pressure plate 11a, and finally output to the next station through the gap between the cutting platform 10 and the first pressure plate 11a.

[0220] During the execution of S120 to S140, the third pressure plate component 13 on the connecting platform 102 where the spare material belt 2 is placed is always pressed against the spare material belt 2. After the roll change is completed, the spare material belt 2, which is docked to the tail of the working material belt 1a to be docked, becomes the new working material belt 1. The third pressure plate component 13 controls the third pressure plate 13a to move away from the connecting platform 102 so as to allow the new working material belt 1 to continue to be conveyed through the gap between the third pressure plate 13a and the connecting platform 102.

[0221] During normal conveying of the working material belt 1, the cutting platform 10 is located on the conveying path of the working material belt 1, and the cutter assembly 4 is set in the first groove 10a of the cutting platform 10. In this way, when the working material belt 1 is short of material, there is no need to move the cutting platform 10. Only the second pressure plate component 12 needs to be moved to press the working material belt 1 onto the cutting platform 10, and the cutter 5 can be moved to cut the working material belt 1. This can greatly shorten the interval time between discovering that the working material belt 1 is short of material and cutting the working material belt 1, thereby further improving the roll changing efficiency.

[0222] Reference Figures 7 to 8 According to some embodiments of this application, the adhesive application component is rotatable relative to the connecting platform 102, and the method further includes:

[0223] During the conveying of the working material belt 1, rotate the adhesive application component until the adhesive side of the connecting tape faces upward.

[0224] S140 includes: after the tail of the work strip 1a to be connected is aligned with the head of the spare strip 2, rotating the adhesive application component so that the adhesive surface of the connecting tape faces down to bond the tail of the work strip 1 and the head of the spare strip 2.

[0225] In other words, during the execution of S110 to S130, the adhesive application component is rotated until the adhesive surface of the connecting tape faces upwards. For details regarding the structure of the adhesive application component and the rotation method, please refer to the relevant description in the above embodiments.

[0226] In some embodiments, the roll changing device further includes: a second mounting structure 106 and a first driving component. The second mounting structure 106 is movably mounted on the first mounting structure 105 along the second direction Y, and the connecting platform 102 and the adhesive applicator are both mounted on the first mounting structure 105 through the second mounting structure 106. The second direction Y intersects the first direction X. The first driving component is configured to drive the second mounting structure 106 to move along the second direction Y to move the connecting platform 102 and the adhesive applicator between a first position and a second position.

[0227] Before executing S110, the first drive component is controlled to drive the second mounting structure 106 to move along the second direction Y to move the connecting platform 102 and the adhesive application component to the first position, so that when S110 is executed, the connecting platform 102 and the adhesive application component are in the first position.

[0228] During the execution of S120 to S140, the first drive component is controlled to drive the second mounting structure 106 to move along the second direction Y to move the connecting platform 102 and the adhesive application component to the second position.

[0229] In some embodiments, the roll-changing device further includes a first locking mechanism mounted on the first mounting structure 105 for locking the second mounting structure 106, which has been moved to the first position, in the first position. That is, during execution of S110, the connecting platform 102 and the adhesive application component can be locked in the first position. The structure of the first locking mechanism and the method for locking the second mounting structure 106 can be found in the descriptions in the above embodiments, and will not be repeated hereafter.

[0230] In the above technical solution, the inertial force of the adhesive component rotating downwards can be used to make the adhesive surface of the connecting tape stick together the tail of the working material tape 1a to be connected and the head of the spare material tape 2, thereby making the connection strength between the working material tape 1 and the spare material tape 2 high, and making it less likely for the spare material tape 2 to break during subsequent tape feeding.

[0231] This application provides a roll changing device, referring to... Figures 7 to 9 The roll changing device includes two feeding mechanisms 101, one of which outputs the working material strip 1 to the next station, and the other feeding mechanism 101 outputs the spare material strip 2. The roll changing device also includes two connecting platforms 102, each corresponding to one of the feeding mechanisms 101. The connecting platforms 102 support the beginning of the spare material strip 2, and each connecting platform 102 is equipped with an adhesive applicator for supporting connecting tape. The roll changing device further includes a cutting mechanism 103, configured to cut the working material strip 1. The cut working material strip, moving away from the feeding mechanism 101, becomes the work material strip 1a to be connected. The cutting mechanism 103 is also configured to move the work material strip 1a to be connected along the direction close to the connecting platform 102 where the spare material strip 2 is located, so that the end of the work material strip 1a to be connected corresponds to the beginning of the spare material strip 2. The adhesive application component is configured to attach the adhesive surface of the connecting tape to the tail of the work material tape 1a to be connected and the head of the spare material tape 2, respectively.

[0232] The cutting mechanism 103 includes: a cutting platform 10 for placing the work strip 1a to be connected; a first pressure plate component 11 disposed on the cutting platform 10 for pressing the work strip 1a to be connected onto the cutting platform 10; the cutting mechanism 103 is configured to: move the cutting platform 10 along the direction close to the connecting platform 102 where the spare material strip 2 is located, so as to drive the tail of the work strip 1a to be connected to correspond to the head of the spare material strip 2.

[0233] The cutting platform 10 includes a first groove 10a, through which the work material strip 1 is output to the next station. The cutting mechanism 103 further includes: a cutting blade assembly 4, including a cutting blade 5 placed in the first groove 10a, the cutting blade assembly 4 being configured to move the cutting blade 5 along the extending direction of the first groove 10a; and a second pressure plate component 12, including a second pressure plate 12a and a second groove 23 disposed on the second pressure plate 12a, the second pressure plate component 12 being configured to drive the second pressure plate 12a to move to the second groove 23 facing the first groove 10a, and to press the work material strip 1 via the cutting platform 10 between the first groove 10a and the second groove 23, so that the cutting blade assembly 4 moves the cutting blade 5 along the extending direction of the first groove 10a to cut the work material strip 1.

[0234] The roll changing device also includes a calibration component 30, which is connected to the first side of the connecting platform 102. The head of the spare material strip 2 extends out of the first side of the connecting platform 102 so that the head of the spare material strip 2 is aligned with the calibration component 30.

[0235] The adhesive applicator is rotatable relative to the connecting platform 102. The adhesive applicator is configured to: rotate until the adhesive surface of the connecting tape faces upwards during the conveying of the working tape 1a; and rotate until the tail of the working tape 1a to be connected aligns with the head of the spare tape 2, so as to adhere the tail of the working tape 1a and the head of the spare tape 2. The adhesive applicator includes a vacuum suction cup 43 for adsorbing the connecting tape.

[0236] The roll changing device also includes a third pressure plate component 13, which is disposed on the connecting platform 102. The third pressure plate component 13 includes a third pressure plate 13a. The third pressure plate component 13 is configured to drive the third pressure plate 13a to move toward the connecting platform 102 to press the spare material strip 2 against the connecting platform 102. The third pressure plate component 13 is also configured to drive the third pressure plate 13a to move away from the connecting platform 102 so that the working material strip 1 is output to the next station through the gap between the third pressure plate 13a and the connecting platform 102.

[0237] The roll changing device further includes: a first mounting structure 105, at least two connecting platforms 102 mounted on the first mounting structure 105 along the first direction X, and a cutting mechanism 103 movably mounted on the first mounting structure 105 along the first direction X.

[0238] The roll changing device further includes: a second mounting structure 106, movably mounted on the first mounting structure 105 along the second direction Y, and the connecting platform 102 and the adhesive applicator are both mounted on the first mounting structure 105 through the second mounting structure 106, the second direction Y intersecting the first direction X; a first driving component, configured to drive the second mounting structure 106 to move along the second direction Y to move the connecting platform 102 and the adhesive applicator between a first position and a second position, the second position being closer to the cutting mechanism 103 than the first position, the cutting mechanism 103 being used to move along the first direction X so that the tail of the work strip 1a to be connected corresponds to the head of the spare strip 2 on the connecting platform 102 that has moved to the second position.

[0239] The roll changing device further includes a first locking mechanism, which is mounted on the first mounting structure 105 and is used to lock the second mounting structure 106, which has been moved to the first position, in the first position.

[0240] The roll changing device further includes: a third mounting structure 107, movably mounted on the first mounting structure 105 along the first direction X, the cutting mechanism 103 being mounted on the first mounting structure 105 via the third mounting structure 107; and at least two second locking mechanisms 81, which are arranged at intervals along the first direction X and correspond one-to-one with at least two connecting platforms 102, the third mounting structure 107 moving along the first direction X to pass through at least two second locking mechanisms 81 in sequence, the second locking mechanisms 81 being configured to lock the position of the third mounting structure 107 when the cutting mechanism 103 moves to any connecting platform 102.

[0241] The roll changing device also includes a buffer mechanism 109, which includes at least one first transfer roller 110 and at least one second transfer roller 111 arranged alternately. The first transfer roller 110 is movable relative to the second transfer roller 111. The working material belt 1 output by the feeding mechanism 101 passes through the first transfer roller 110 and the second transfer roller 111 and is then transported to the next station.

[0242] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A roll changing device, characterized in that, include: At least two feeding mechanisms, one of which is used to output the working material belt to the next station, and the remaining feeding mechanisms are used to output the spare material belt; At least two connecting platforms are provided in one-to-one correspondence with at least two of the feeding mechanisms. The connecting platforms are used to carry the head of the spare material strip. The connecting platforms are also provided with adhesive application components, which are used to carry the connecting tape. A cutting mechanism is configured to cut the working strip, wherein the working strip that is cut away from the feeding mechanism is used as the working strip to be docked. The cutting mechanism is also configured to move the working strip to be docked along the direction of the connecting platform where the spare strip is located, so that the tail of the working strip to be docked corresponds to the head of the spare strip. The adhesive application component is configured to attach the adhesive surface of the connecting tape to the tail end of the work strip to be connected and the head end of the spare strip, respectively.

2. The roll changing device according to claim 1, characterized in that, The cutting mechanism includes: A cutting platform is used to place the work material strip to be docked; The first pressure plate component is disposed on the cutting platform and is used to press the work strip to be connected onto the cutting platform; The cutting mechanism is configured to move the cutting platform along a direction close to the connecting platform where the spare material strip is located, so as to bring the tail of the work material strip to be docked to a position corresponding to the head of the spare material strip.

3. The roll changing device according to claim 2, characterized in that, The roll changing device also includes: A calibration component is connected to a first side of the connecting platform, and the head of the spare material strip extends out of the first side of the connecting platform so that the head of the spare material strip is aligned with the calibration component. The cutting mechanism is configured to move the cutting platform in a direction close to the calibration component so that the tail of the work strip to be docked corresponds to the head of the spare strip.

4. The roll changing device according to claim 2 or 3, characterized in that, The cutting platform includes a first groove, and the workpiece strip is output to the next workstation via the cutting platform. The cutting mechanism further includes: A cutting assembly includes a cutting blade disposed within the first groove, the cutting assembly being configured to move the cutting blade along the extending direction of the first groove; The second pressure plate component includes a second pressure plate and a second groove disposed on the second pressure plate. The second pressure plate component is configured to drive the second pressure plate to move so that the second groove is directly opposite the first groove, and to press the work strip via the cutting platform between the first groove and the second groove, so that the cutter assembly moves the cutter along the extension direction of the first groove to cut the work strip.

5. The rewinding device according to any one of claims 1-4, characterized in that, The adhesive application component is rotatable relative to the connecting platform, and the adhesive application component is configured as follows: During the conveying of the working material belt, the tape is rotated so that the adhesive surface of the connecting tape faces upward; after the tail of the working material belt to be connected aligns with the head of the spare material belt, the tape is rotated so that the adhesive surface of the connecting tape faces downward to bond the tail of the working material belt to be connected and the head of the spare material belt.

6. The roll changing device according to claim 5, characterized in that, The adhesive application component includes a vacuum suction cup, which is used to adsorb the connecting tape.

7. The rewinding device according to any one of claims 1-6, characterized in that, The roll changing device also includes: A third pressure plate component is disposed on the connecting platform, and the third pressure plate component includes a third pressure plate. The third pressure plate component is configured to drive the third pressure plate to move toward the connecting platform in order to press the spare material strip against the connecting platform; The third pressure plate component is also configured to drive the third pressure plate to move away from the connecting platform, so that the working material strip is output to the next station through the gap between the third pressure plate and the connecting platform.

8. The rewinding device according to any one of claims 1-7, characterized in that, The roll changing device also includes: A first mounting structure, wherein at least two connecting platforms are mounted on the first mounting structure along a first direction, and the cutting mechanism is movably mounted on the first mounting structure along the first direction.

9. The roll changing device according to claim 8, characterized in that, The roll changing device also includes: The second mounting structure is movably mounted on the first mounting structure along the second direction, and both the connecting platform and the adhesive component are mounted on the first mounting structure through the second mounting structure, wherein the second direction intersects with the first direction; A first driving component is configured to drive the second mounting structure to move along the second direction to move the connecting platform and the adhesive application component between a first position and a second position, wherein the second position is closer to the cutting mechanism than the first position, and the cutting mechanism is configured to move along the first direction such that the tail of the work strip to be docked corresponds to the head of the spare strip on the connecting platform that has moved to the second position.

10. The roll changing device according to claim 9, characterized in that, The roll changing device also includes: A first locking mechanism is mounted on the first mounting structure and is used to lock the second mounting structure, which has been moved to the first position, in the first position.

11. The roll changing device according to claim 8, characterized in that, The roll changing device also includes: A third mounting structure is movably mounted on the first mounting structure along the first direction, and the cutting mechanism is mounted on the first mounting structure via the third mounting structure; At least two second locking mechanisms are provided at intervals along the first direction, corresponding one-to-one with the at least two connecting platforms. The third mounting structure moves along the first direction to pass through the at least two second locking mechanisms in sequence. The second locking mechanisms are configured to lock the position of the third mounting structure when the cutting mechanism moves to any of the connecting platforms.

12. The rewinding device according to any one of claims 1-11, characterized in that, The roll changing device also includes: The buffer mechanism includes at least one first transfer roller and at least one second transfer roller arranged alternately, the first transfer roller being movable relative to the second transfer roller, and the working material belt output by the feeding mechanism passing through the first transfer roller and the second transfer roller and then being conveyed to the next station.

13. The roll changing device according to claim 12, characterized in that, If the rewinding device further includes a third mounting structure, the rewinding device further includes a third transfer roller disposed on the third mounting structure, the third transfer roller being used to transport the working material strip output by the unloading mechanism to the buffer mechanism.

14. An adhesive application device, characterized in that, Includes the roll changing device as described in any one of claims 1-13.

15. A battery production system, characterized in that, Includes the roll changing device as described in any one of claims 1-13 or the adhesive applicator as described in claim 14.

16. A method for changing rolls, characterized in that, include: Place the head of the spare material belt output from one of at least two feeding mechanisms onto the connecting platform; In response to the fact that the roll diameter of the output working strip in at least two of the feeding mechanisms is less than a preset value, the cutting mechanism is controlled to cut the working strip, wherein the working strip that is cut away from the feeding mechanism is used as the working strip to be docked. The cutting mechanism is controlled to move the work strip to be docked along the direction close to the connecting platform where the spare work strip is located, so that the tail of the work strip to be docked corresponds to the head of the spare work strip; The adhesive application component controls the bonding surface of the connecting tape to be bonded to the tail end of the work tape to be connected and the head end of the spare tape, respectively.

17. The roll changing method according to claim 16, characterized in that, The cutting mechanism includes a cutting platform and a first pressure plate component, the first pressure plate component being disposed on the cutting platform, and the method further includes: The first pressure plate component is controlled to press the work strip to be docked onto the cutting platform; The step of controlling the cutting mechanism to move the work strip to be docked along a direction close to the connecting platform where the spare work strip is located, so that the tail of the work strip to be docked corresponds to the head of the spare work strip, includes: Move the cutting platform along the direction close to the connecting platform where the spare material strip is located, so as to move the tail of the work material strip to be docked to the position corresponding to the head of the spare material strip.

18. The roll changing method according to claim 17, characterized in that, The roll changing device further includes a calibration component, which is connected to a first side of the connecting platform. The step of placing the head of the spare material strip output from one of at least two feeding mechanisms onto the connecting platform includes: Extend the head of the spare material strip beyond the first side of the connecting platform so that the head of the spare material strip is aligned with the calibration component; The step of controlling the cutting mechanism to move the work strip to be docked along a direction close to the connecting platform where the spare work strip is located, so that the tail of the work strip to be docked corresponds to the head of the spare work strip, includes: Move the cutting platform along the direction close to the calibration component so that the tail of the work strip to be docked corresponds to the head of the spare strip.

19. The roll changing method according to claim 17 or 18, characterized in that, The cutting platform includes a first groove, and the workpiece strip is output to the next workstation via the cutting platform. The cutting mechanism further includes: A cutting blade assembly and a second pressure plate component, the cutting blade assembly including a cutting blade disposed in a first groove, the cutting blade assembly being configured to move the cutting blade along the extending direction of the first groove, the second pressure plate component including a second pressure plate and a second groove disposed on the second pressure plate, the second pressure plate component being configured to drive the second pressure plate to move; The controlled cutting mechanism cuts the work material strip by: Drive the second pressure plate to move until the second groove is directly opposite the first groove; The second pressure plate is controlled to move toward the cutting platform to press the work strip via the cutting platform between the first groove and the second groove; The cutter assembly is controlled to move the cutter along the extension direction of the first groove to cut the working material strip.

20. The roll-changing method according to any one of claims 16-19, characterized in that, The adhesive-applying component is rotatable relative to the connecting platform, and the method further includes: During the conveying of the work material belt, the adhesive application component is rotated so that the adhesive surface of the connecting tape faces upward; The control adhesive application component attaches the adhesive surface of the connecting tape to the tail end of the work tape to be connected and the head end of the spare tape, respectively, including: After the tail of the work strip to be connected aligns with the head of the spare strip, rotate the adhesive applicator so that the adhesive surface of the connecting tape faces down to bond the tail of the work strip to be connected and the head of the spare strip.

Images