Adhesive Tape Rewinding Device and Method

Abstract

Embodiments of the present invention provide a sticker rewinding device and method, which relate to the technical field of lithium batteries. The sticker rewinding device includes a mounting plate and a reel shaft, a guide roller, a tape connecting platform, a driving roller and a winding shaft that are sequentially arranged on the mounting plate; the reel shaft is used to support a sticker material roll, and the sticker material roll is used to output a tape with stickers and sequentially pass through the guide roller, the tape connecting platform and the driving roller until it is wound onto the winding shaft; a cutting groove is provided on the tape connecting platform, and the tape can be cut off through the cutting groove; the sticker rewinding device further includes a tape pressing mechanism, and the tape pressing mechanism is arranged above the tape connecting platform and is used to press the ends of two tapes tightly on the tape connecting platform to facilitate bonding the ends of the two tapes. The sticker rewinding device and method can rewind multiple small-sized sticker rolls into sticker rolls with a standard diameter for reuse, avoiding waste of resources.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium batteries, and more particularly, to a sticker rewinding device and method. Background Art

[0002] In the core manufacturing process of lithium batteries, stickers are used to stick to the current collector. During production, it is possible that one roll of current collector has been completely stuck, but there is still some remaining sticker roll material. After replacing the current collector material, the remaining sticker roll material is small, and for the convenience of production, the sticker roll material will also be replaced synchronously. This results in a lot of small amounts of remaining sticker roll materials, causing waste of resources. Summary of the Invention

[0003] An object of the present invention is to provide a sticker rewinding device and method that can rewind multiple small amounts of sticker roll materials into sticker roll materials with a standard roll diameter for reuse, avoiding waste of resources.

[0004] Embodiments of the present invention may be implemented as follows:

[0005] In a first aspect, the present invention provides a sticker rewinding device, which includes a mounting plate and a sticker release shaft, a guide roller, a tape connecting platform, a driving roller, and a winding shaft sequentially arranged on the mounting plate;

[0006] The sticker release shaft is used to support the sticker roll material, and the sticker roll material is used to output the sticker tape and sequentially pass through the guide roller, the tape connecting platform, and the driving roller until it is wound onto the winding shaft;

[0007] A cutting groove is provided on the tape connecting platform, and the sticker tape can be cut through the cutting groove;

[0008] The sticker rewinding device further includes a tape pressing mechanism, which is arranged above the tape connecting platform and is used to press the ends of two sticker tapes onto the tape connecting platform to facilitate bonding the ends of the two sticker tapes.

[0009] The beneficial effects of the sticker rewinding device provided by the embodiments of the present invention include:

[0010] When one roll of sticker roll material is about to be used up, the sticker tape of the sticker roll material is cut through the cutting groove on the tape connecting platform. Then, a new sticker roll material is installed on the sticker release shaft, and the sticker tape of the new sticker roll material is led to the cutting groove and pressed tightly by the tape pressing mechanism, and then bonded to the original sticker tape on the tape connecting platform, so that the sticker tape on each roll of sticker roll material can be fully utilized without causing waste of resources.

[0011] In an optional embodiment, the tape pressing mechanism includes a tape pressing plate, which is hinged to the tape connecting platform and is used to press the end of the sticker tape. At least one of the tape pressing plate and the tape connecting platform is provided with a magnetic block, and the magnetic block is used to increase the pressure of the tape pressing plate on the sticker tape.

[0012] In this way, the tape pressing mechanism has a simple structure, is convenient to operate, and has a low cost.

[0013] In an alternative embodiment, the tape pressing mechanism includes a tape pressing plate and a lifting air cylinder. The cylinder body of the lifting air cylinder is connected to the mounting plate, and the tape pressing plate is connected to the telescopic rod of the lifting air cylinder.

[0014] In this way, the tape pressing mechanism has a simple structure, is convenient to operate, and has a high degree of automation.

[0015] In an alternative embodiment, the adhesive tape rewinding device further includes a controller and a first sensor connected to the controller. The first sensor is mounted on the mounting plate and is located on one side of the unwinding reel. When the first sensor detects that the adhesive tape roll on the unwinding reel has been used up, the controller controls the driving roller to decelerate.

[0016] In this way, the device can automatically stop when each roll of adhesive tape is used up, waiting for the staff to replace it with a new roll of adhesive tape.

[0017] In an alternative embodiment, the adhesive tape rewinding device further includes a second sensor connected to the controller. When the second sensor detects that the last piece of adhesive tape on the tape passes through the guide roller, the controller controls the driving roller to decelerate until the last piece of adhesive tape is located on the cutting groove.

[0018] In this way, the adhesive tape on each roll of adhesive tape can be fully utilized without waste, and the degree of automation is high.

[0019] In an alternative embodiment, when the front edge L of the last piece of adhesive tape on the tape detected by the second sensor reaches position A, the controller controls the driving roller to decelerate until the front edge L reaches position B, where position A is located at the position of the guide roller, and position B is beyond the cutting groove and the distance from the cutting groove is half of the width of the adhesive tape.

[0020] In this way, the device can accurately control the output position of the tape of the adhesive tape roll, facilitating the accurate bonding of the ends of two rolls of adhesive tape, and will not affect the use effect of the bonded tape.

[0021] In an alternative embodiment, the adhesive tape rewinding device further includes a third sensor connected to the controller. The third sensor is used to detect whether the color and width of the adhesive tape of the adhesive tape roll installed on the unwinding reel meet the preset values.

[0022] In this way, the third sensor can prevent the model of the newly installed adhesive tape roll from not matching the adhesive tape roll on the winding reel.

[0023] In an alternative embodiment, the adhesive tape rewinding device further includes a tape output mechanism. The tape output mechanism is mounted on the mounting plate and is located above the tape receiving platform. The tape output mechanism is used to output tape to bond the ends of two tapes.

[0024] In this way, it is convenient to bond the ends of the two tape rolls efficiently and improve the bonding effect.

[0025] In a second aspect, the present invention provides a method for rewinding adhesive tape. The method for rewinding adhesive tape uses the adhesive tape rewinding device of the foregoing embodiment. The method for rewinding adhesive tape includes:

[0026] When it is detected that the adhesive tape roll on the unwinding shaft is used up, control the driving roller to decelerate until the last piece of adhesive tape is located on the cutting groove;

[0027] Use the tape pressing mechanism to press the tape roll tightly on the tape connecting platform;

[0028] Remove the last piece of adhesive tape on the tape roll, and the tape roll can be cut off through the cutting groove;

[0029] On the unwinding shaft, replace the used adhesive tape roll with a new one;

[0030] Pull the first piece of adhesive tape of the new adhesive tape roll to the cutting groove and press it tightly with the tape pressing mechanism;

[0031] Remove the adhesive tape on the new tape roll above the cutting groove, cut off the new tape roll through the cutting groove, and then bond the ends of the two tape rolls.

[0032] The beneficial effects of the method for rewinding adhesive tape provided by the embodiments of the present invention include:

[0033] It can use the above-mentioned adhesive tape rewinding device to bond the first piece of adhesive tape of the latter adhesive tape roll to the position of the last piece of adhesive tape of the previous adhesive tape roll, so that the adhesive tape rolls on each adhesive tape roll can be fully utilized without causing waste of resources.

[0034] In an optional embodiment, when it is detected that the adhesive tape roll on the unwinding shaft is used up, the step of controlling the driving roller to decelerate until the last piece of adhesive tape is located on the cutting groove includes:

[0035] When it is detected that the front edge L of the last piece of adhesive tape on the tape roll reaches position A, control the driving roller to decelerate until the front edge L reaches position B, where position A is located at the position of the guide roller, and position B is beyond the cutting groove and the distance from the cutting groove is half of the width of the adhesive tape. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required in the embodiments. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0037] Figure 1 Schematic structural diagram of the first perspective of the adhesive tape rewinding device provided by the embodiment of the present invention;

[0038] Figure 2 Schematic structural diagram of the second perspective of the adhesive tape rewinding device provided by the embodiment of the present invention;

[0039] Figure 3 Schematic structural diagram of the pressing belt plate pressed on the tape receiving platform;

[0040] Figure 4 Schematic structural diagram of the tape receiving platform;

[0041] Figure 5 Schematic structural diagram of the adhesive tape reel laid flat.

[0042] Icon: 100 - Adhesive tape rewinding device; 1 - Mounting plate; 2 - Tape feeding reel; 3 - Guide roller; 4 - Tape receiving platform; 41 - Cutting groove; 5 - Pressing belt plate; 6 - Hinge; 7 - Magnet; 8 - Driving roller; 9 - Driving pressure roller; 10 - Deviation rectifying mechanism; 11 - Tape winding reel; 12 - Winding disc; 13 - Smoothing pressure roller; 14 - Tape output mechanism; 15 - First sensor; 16 - Second sensor; 17 - Third sensor; 18 - Fourth sensor; 19 - First reduction gear; 20 - Second reduction gear; 200 - Adhesive tape reel; 201 - Winding tape; 202 - Adhesive tape. Detailed implementation manners

[0043] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0044] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0045] It should be noted that: similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0046] In the description of the present invention, it should be noted that if terms such as "upper", "lower", "inner", "outer", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use. This is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present invention.

[0047] In addition, if terms such as "first", "second", etc. are only used for differential description and cannot be construed as indicating or implying relative importance.

[0048] It should be noted that, without conflict, the features in the embodiments of the present invention can be combined with each other.

[0049] Please refer to Figure 1 , this embodiment provides a sticker rewinding device 100. The sticker rewinding device 100 includes a mounting plate 1 and a reel 2, a roller 3, a tape connecting platform 4, a driving roller 8, a deviation rectifying mechanism 10, and a winding reel 11 that are sequentially arranged on the mounting plate 1. The sticker rewinding device 100 further includes a controller (not shown in the figure) and a first sensor 15, a second sensor 16, a third sensor 17, and a fourth sensor 18 that are connected to the controller.

[0050] The reel 2 is used to support the sticker roll 200. The sticker roll 200 is used to output the tape 201 with stickers 202 (please refer to Figure 5 ), and it passes through the roller 3, the tape connecting platform 4, the driving roller 8, and the deviation rectifying mechanism 10 in sequence until it is wound onto the winding reel 11. Among them, the deviation rectifying mechanism 10 is used to prevent the tape 201 from deviating during the winding process.

[0051] The sticker rewinding device 100 further includes a driving pressure roller 9 and a flattening pressure roller 13. Among them, the driving pressure roller 9 is installed on the mounting plate 1 and is arranged in the same vertical direction as the driving roller 8. The driving pressure roller 9 is used to press the tape 201 against the driving roller 8. The flattening pressure roller 13 is installed on the mounting plate 1 and is located above the winding reel 11. The flattening pressure roller 13 is used to press the tape 201 against the winding disc 12 of the winding reel 11.

[0052] The sticker rewinding device 100 further includes a tape pressing mechanism. The tape pressing mechanism is arranged above the tape connecting platform 4 and is used to press the ends of two tapes 201 against the tape connecting platform 4 to facilitate bonding the ends of the two tapes 201.

[0053] The sticker rewinding device 100 further includes a tape output mechanism 14. The tape output mechanism 14 is installed on the mounting plate 1 and is located above the tape connecting platform 4. The tape output mechanism 14 is used to output tape to bond the ends of two tapes 201.

[0054] In other embodiments, an ultrasonic welding mechanism may also be used to replace the tape output mechanism 14, and the ends of the two coiled tapes 201 are bonded by ultrasonic welding.

[0055] Please refer to Figure 1 and Figure 2 , the adhesive tape rewinding device 100 further includes a first reduction gear 19 and a second reduction gear 20. Among them, the first reduction gear 19 is installed on the mounting plate 1 and connected to the driving roller 8, and the first reduction gear 19 is used to control the rotation speed of the driving roller 8. The second reduction gear 20 is installed on the mounting plate 1 and connected to the winding shaft 11, and the second reduction gear 20 is used to control the rotation speed of the winding shaft 11.

[0056] Please refer to Figure 3 and Figure 4 , a cutting groove 41 is provided on the tape connecting platform 4, and the coiled tape 201 can be cut off through the cutting groove 41.

[0057] The tape pressing mechanism includes two tape pressing plates 5, which are respectively arranged at opposite ends of the tape connecting platform 4. The tape pressing plates 5 are hinged to the tape connecting platform 4 through hinges 6. The tape pressing plates 5 are used to press the ends of the coiled tape 201. Magnetic blocks 7 are provided on both the tape pressing plates 5 and the tape connecting platform 4, and the magnetic blocks 7 are used to increase the pressure of the tape pressing plates 5 on the coiled tape 201. In this way, the structure of the tape pressing mechanism is simple, the operation is convenient, and the cost is low.

[0058] In other embodiments, a lifting air cylinder may also be used to drive the tape pressing plate 5 to press or release the coiled tape 201. Specifically, the cylinder body of the lifting air cylinder is connected to the mounting plate 1, and the tape pressing plate 5 is connected to the telescopic rod of the lifting air cylinder. In this way, the structure of the tape pressing mechanism is simple, the operation is convenient, and the degree of automation is high.

[0059] Please refer to Figure 1 , the first sensor 15 is installed on the mounting plate 1 and on one side of the unwinding shaft 2. When the first sensor 15 detects that the adhesive tape roll 200 on the unwinding shaft 2 is used up, the controller controls the driving roller 8 to decelerate. In this way, the device can automatically stop when each adhesive tape roll 200 is used up and wait for the staff to replace it with a new adhesive tape roll 200.

[0060] The second sensor 16 is installed on the mounting plate 1 and on one side of the guide roller 3. When the second sensor 16 detects that the last piece of adhesive tape 202 on the coiled tape 201 passes through the guide roller 3, the controller controls the driving roller 8 to decelerate until the last piece of adhesive tape 202 is located on the cutting groove 41. In this way, the adhesive tape 202 on each adhesive tape roll 200 can be fully utilized without waste, and the degree of automation is high.

[0061] Preferably, please refer to Figure 5, when the front edge L of the last piece of adhesive tape 202 on the tape roll 201 is detected by the second sensor 16 to reach position A, the controller controls the driving roller 8 to decelerate until the front edge L reaches the position, where position A is located at the position of the roller 3, and position B is beyond the cutting slot 41 and the distance from the cutting slot 41 is half of the width of the adhesive tape 202. In this way, the device can accurately control the output position of the tape roll 201 of the adhesive tape roll 200, facilitating the accurate bonding of the ends of two adhesive tape rolls 200 and not affecting the use effect of the bonded tape roll 201.

[0062] The third sensor 17 is installed on the mounting plate 1 and on one side of the unwind reel 2. The third sensor 17 is used to detect whether the color and width of the adhesive tape 202 of the adhesive tape roll 200 installed on the unwind reel 2 meet the preset values. In this way, the third sensor 17 can avoid the mismatch between the model of the newly installed adhesive tape roll 200 and the adhesive tape roll 200 on the take-up reel 11.

[0063] The fourth sensor 18 is installed on the mounting plate 1 and on one side of the take-up reel 11. The fourth sensor 18 is used to detect whether the adhesive tape roll 200 installed on the take-up reel 12 is full, and in the case of being full, send a reminder signal in time, facilitating the operator to remove the full adhesive tape roll 200 and wind the tape roll 201 that has not been wound onto the take-up reel 12 to continue winding.

[0064] This embodiment also provides an adhesive tape rewinding method. The adhesive tape rewinding method uses the foregoing adhesive tape rewinding device 100, and the adhesive tape rewinding method includes the following steps:

[0065] Step 1: When it is detected that the adhesive tape roll 200 on the unwind reel 2 is used up, control the driving roller 8 to decelerate until the last piece of adhesive tape 202 is located on the cutting slot 41.

[0066] Specifically, when the first sensor 15 detects that the adhesive tape roll 200 on the unwind reel 2 is used up, it sends a deceleration stop signal to the controller. The controller starts the first reducer 19 and the second reducer 20 to reduce the rotational speeds of the driving roller 8 and the take-up reel 11.

[0067] When the second sensor 16 detects that the front edge L of the last piece of adhesive tape 202 on the tape roll 201 reaches position A, the controller controls the driving roller 8 and the take-up reel 11 to decelerate until the front edge L reaches position B, where position A is located at the position of the roller 3, and position B is beyond the cutting slot 41 and the distance from the cutting slot 41 is half of the width of the adhesive tape 202. The length from position A to position B can be set in advance in the program in the controller, so that the controller controls the tape roll 201 to automatically stop at position B after traveling a preset length from position A.

[0068] In other embodiments, a pause button may also be provided on the adhesive tape rewinding device 100. When the operator presses the pause button, the controller controls the driving roller 8 and the take-up reel 11 to decelerate, and controls the front edge L of the last adhesive tape 202 on the tape 201 to reach position B.

[0069] Step 2: Use the tape pressing mechanism to press the tape 201 tightly against the tape connecting platform 4.

[0070] Specifically, when the front edge L of the last adhesive tape 202 reaches position B, the operator flips down the tape pressing plate 5 to press the tape 201.

[0071] Step 3: Remove the last adhesive tape 202 on the tape 201 and cut the tape 201 through the cutting slot 41.

[0072] Specifically, after pressing the tape 201, the operator tears off the adhesive tape 202 above the cutting slot 41 and cuts the tape 201 along the cutting slot 41.

[0073] Step 4: Replace the old adhesive tape reel 200 with a new one on the tape feeding reel 2.

[0074] Specifically, after replacing the old adhesive tape reel 200 with a new one on the tape feeding reel 2, use the third sensor 17 to detect whether the color and width of the adhesive tape 202 of the adhesive tape reel 200 installed on the tape feeding reel 2 meet the preset values. If the color and width of the adhesive tape 202 meet the preset values, proceed to Step 5; if the color or width of the adhesive tape 202 does not meet the preset values, the controller issues an alarm to remind the operator to replace the adhesive tape reel 200.

[0075] Step 5: Pull the first adhesive tape 202 of the new adhesive tape reel 200 to the cutting slot 41 and press it tightly with the tape pressing mechanism; then bond it to the original tape 201 on the tape connecting platform 4.

[0076] Specifically, the operator pulls the front edge L of the first adhesive tape 202 of the new tape 201 to position B, and then uses the tape pressing mechanism to press the end of the tape 201 tightly.

[0077] Step 6: Remove the adhesive tape 202 above the cutting slot 41 on the new tape 201, cut the new tape 201 through the cutting slot 41, and then bond the ends of the two tapes 201.

[0078] Specifically, the operator tears off the adhesive tape 202 above the cutting slot 41 on the new tape 201, cuts the new tape 201 along the cutting slot 41, and then bonds the ends of the tapes 201 on both sides of the cutting slot 41 with the adhesive tape 202 output by the tape output mechanism 14. After the bonding is completed, flip up the tape pressing plate 5 to open it, and then start the driving roller 8 for winding.

[0079] The beneficial effects of the adhesive tape rewinding device 100 and method provided by the embodiments of the present invention include:

[0080] 1. When a roll of adhesive tape 202 is about to run out, the tape 201 of the adhesive tape 202 roll is cut off by using the cutting groove 41 on the tape connecting platform 4. Then, a new roll of adhesive tape 200 is installed on the unwinding shaft 2, and the tape 201 of the new roll of adhesive tape 200 is led to the cutting groove 41 and pressed tightly by the tape pressing mechanism, and then bonded to the original tape 201 on the tape connecting platform 4, so that each roll of adhesive tape 202 on the adhesive tape 202 roll can be fully utilized without causing waste of resources;

[0081] 2. The distance from the cutting groove 41 to position B is exactly half of the width of the adhesive tape 202, and the width of the adhesive tape 202 pasted on the tape 201 is exactly the width of one adhesive tape 202, which can minimize the waste of the adhesive tape 202 and reduce the production cost.

[0082] The above is only the specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any change or replacement that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A sticker rewinding device, characterized in that, The adhesive tape rewinding device includes a mounting plate (1), and a tape unwinding shaft (2), a guide roller (3), a tape connecting platform (4), a driving roller (8) and a winding shaft (11) which are sequentially arranged on the mounting plate (1); The tape unwinding shaft (2) is used for supporting an adhesive tape roll (200), and the adhesive tape roll (200) is used for outputting a tape (201) with an adhesive tape (202), and the tape (201) sequentially passes through the guide roller (3), the tape connecting platform (4) and the driving roller (8) until it is wound onto the winding shaft (11); A cutting groove (41) is arranged on the tape connecting platform (4), and the tape (201) can be cut off through the cutting groove (41); The adhesive tape rewinding device further includes a tape pressing mechanism, the tape pressing mechanism is arranged above the tape connecting platform (4), and the tape pressing mechanism is used for pressing the ends of two tapes (201) onto the tape connecting platform (4) to facilitate bonding the ends of the two tapes (201); The adhesive tape rewinding device further includes a controller and a first sensor (15) and a second sensor (16) connected to the controller. The first sensor (15) is installed on the mounting plate (1) and on one side of the tape unwinding shaft (2). When the first sensor (15) detects that the adhesive tape roll (200) on the tape unwinding shaft (2) is used up, the controller controls the driving roller (8) to decelerate; when the second sensor (16) detects that the front edge L of the last adhesive tape (202) on the tape (201) reaches position A, the controller controls the driving roller (8) to decelerate until the front edge L reaches position B, where position A is located at the position of the guide roller (3), and position B is beyond the cutting groove (41) and the distance from the cutting groove (41) is half of the width of the adhesive tape (202).

2. The adhesive tape rewinding device according to claim 1, wherein The tape pressing mechanism includes a pressing plate (5), the pressing plate (5) is hinged to the tape connecting platform (4), the pressing plate (5) is used for pressing the ends of the tape (201), and at least one of the pressing plate (5) and the tape connecting platform (4) is provided with a magnetic block (7), and the magnetic block (7) is used for increasing the pressure of the pressing plate (5) on the tape (201).

3. The adhesive tape rewinding device according to claim 1, wherein The tape pressing mechanism includes a pressing plate (5) and a lifting cylinder, the cylinder body of the lifting cylinder is connected to the mounting plate (1), and the pressing plate (5) is connected to the telescopic rod of the lifting cylinder.

4. The adhesive tape rewinding device according to claim 1, wherein, The adhesive tape rewinding device further includes a third sensor (17) connected to the controller, and the third sensor (17) is used for detecting whether the color and width of the adhesive tape (202) of the adhesive tape roll (200) installed on the tape unwinding shaft (2) meet the preset values.

5. The adhesive tape rewinding device according to claim 1, characterized in that, The adhesive tape rewinding device further includes a tape output mechanism (14), the tape output mechanism (14) is installed on the mounting plate (1) and above the tape connecting platform (4), and the tape output mechanism (14) is used for outputting a tape to bond the ends of two tapes (201).

6. A method for rewinding adhesive tape, characterized in that, The adhesive tape rewinding method uses the adhesive tape rewinding device described in claim 1. The adhesive tape rewinding method includes: When it is detected that the adhesive tape roll (200) on the unwinding shaft (2) is used up, controlling the driving roller (8) to decelerate until the last piece of the adhesive tape (202) is located on the cutting groove (41), including: when it is detected that the front edge L of the last piece of the adhesive tape (202) on the tape (201) reaches position A, controlling the driving roller (8) to decelerate until the front edge L reaches position B, where position A is located at the position of the idler roller (3), and position B is beyond the cutting groove (41) and the distance from the cutting groove (41) is half of the width of the adhesive tape (202); Using the tape pressing mechanism to press the tape (201) tightly on the tape receiving platform (4); Removing the last piece of the adhesive tape (202) on the tape (201) and cutting the tape (201) through the cutting groove (41); Replacing a new adhesive tape roll (200) on the unwinding shaft (2); Pulling the first piece of the adhesive tape (202) of the new adhesive tape roll (200) to the cutting groove (41) and pressing it tightly with the tape pressing mechanism; Removing the adhesive tape (202) on the new tape (201) above the cutting groove (41), cutting the new tape (201) through the cutting groove (41), and then bonding the ends of the two tapes (201).

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