Automatic tape splicing and winding equipment without adhesive tape

Abstract

The utility model discloses an automatic tape receiving and rolling equipment without adhesive tape, relates to the field of coating technology, contains frame, turnover frame, two winding rollers, two unwinding rollers, static generating device, film pressing device and cutting device. The frame has a winding station, the turnover frame is rotatably connected to the frame, four rollers are all connected on the turnover frame, and two unwinding rollers respectively unwind corresponding pad films. The turnover frame can rotate to alternately place two winding rollers to the winding station, and respectively compound and wind corresponding pad films and films. The static generating device at the winding station can electrify the surface of the corresponding pad film, the film pressing device can press the film on the pad film to make it adhere, and the cutting device is used for cutting the film. The equipment does not need adhesive tape sticking and manual alignment, greatly shortens the winding change time, and improves the efficiency.

Description

Technical Field

[0001] This utility model relates to the field of coating technology, and in particular to an automatic tape splicing and winding device without adhesive tape. Background Technology

[0002] In the field of lithium battery technology, thin films (such as separators) used to separate the positive and negative electrodes often require multiple coating treatments during the production process to meet performance requirements such as high energy density and long cycle life. These coatings enhance the separator's high-temperature resistance, chemical stability, and compatibility with the electrolyte. During the winding process, these specially treated separators are prone to interlayer adhesion due to the characteristics of the coating materials. This not only damages the film surface during subsequent processing but may also affect the overall performance of the lithium battery. Therefore, introducing a spacer film during the winding stage has become a common solution in the industry. The spacer film separates the separator layers, effectively preventing adhesion problems. In existing technologies, the composite winding of the spacer film and separator relies on manual operation for the splicing process. Specifically, during roll changing, workers must manually align the new spacer film with the separator end and then use tape to secure it before starting the equipment to continue winding. This manual tape application method requires precise alignment of the film and spacer film ends, a time-consuming process that hinders roll changing efficiency. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes an automatic tape-free splicing and rewinding device, which is beneficial for improving roll changing efficiency.

[0004] The tapeless automatic tape splicing and winding equipment according to an embodiment of the present invention includes a frame, a flipping frame, a first winding roller, a first unwinding roller, a second winding roller, a second unwinding roller, an electrostatic generator, a film pressing device, and a cutting device.

[0005] The machine frame is equipped with a winding station; a turnover frame is rotatably connected to the machine frame; a first winding roller, a first unwinding roller, a second winding roller, and a second unwinding roller are all rotatably connected to the turnover frame. The first unwinding roller is used to unwind a first pad film, and the second unwinding roller is used to unwind a second pad film. The turnover frame can rotate so that the first winding roller and the second winding roller alternately rotate to the winding station. When the first winding roller rotates to the winding station, it can perform composite winding of the first pad film and the film. When the second winding roller rotates to the winding station, it can perform composite winding of the second pad film and the film. An electrostatic generator is located on the machine frame and at the winding station. When the first winding roller rotates to the winding station... When the first take-up roller rotates to the take-up station, the electrostatic generator can generate static electricity on the surface of the first pad film on the first take-up roller. When the second take-up roller rotates to the take-up station, the electrostatic generator can generate static electricity on the surface of the second pad film on the second take-up roller. The film pressing device is located on the frame and at the take-up station. When the first take-up roller rotates to the take-up station, the film pressing device can press the film onto the first pad film on the first take-up roller to make the film adhere to the first pad film. When the second take-up roller rotates to the take-up station, the film pressing device can press the film onto the second pad film on the second take-up roller to make the film adhere to the second pad film. The cutting device is located on the frame and at the take-up station, and the cutting device is used to cut the film.

[0006] It has at least the following beneficial effects: When the tapeless automatic splicing and winding equipment starts working, in the initial state, the flipping frame is in a specific position, so that the first winding roller is located at the winding station of the frame. At this time, the first unwinding roller is fitted with the first pad film roll. The operator first pulls the first end of the first pad film out from the first unwinding roller and guides it to the first winding roller at the winding station, and fixes the first end of the first pad film on the first winding roller. Subsequently, the equipment starts, and the first winding roller and the first unwinding roller start rotating simultaneously. During the rotation of the first unwinding roller, the first pad film is continuously unwound, while the first winding roller, while rotating, performs composite winding of the unwound first pad film with the film to be wound (such as a coated diaphragm), that is, the film and the first pad film adhere to each other and are wound together on the first winding roller. During the composite winding process of the first winding roller, preparations can be made in advance for the operation of the second winding roller. Pull out the second pad film roll that is sleeved on the second unwinding roller, guide the first end of the second pad film to the second winding roller, and fix the first end on the second winding roller to complete the pre-preparation work for the second winding roller, and wait for the subsequent switch to the winding station.

[0007] When the first take-up roller finishes winding, both the first take-up roller and the first unwind roller stop rotating, ending the current composite winding operation. Immediately afterwards, the turning frame begins to rotate, moving the first take-up roller away from the winding station and bringing the second take-up roller to the winding station. Once the second take-up roller reaches the winding station, the turning frame stops rotating, the second unwind roller rotates to release the second pad film, and the second take-up roller begins to rotate and wind up the second pad film. Simultaneously, the electrostatic generator activates, generating static electricity on the surface of the second pad film. After a preset time, the electrostatic generator, the second take-up roller, and the second unwind roller shut down. The film pressing device then activates, pressing the film against the second pad film on the second take-up roller. Because the second pad film surface carries static electricity, the film adheres tightly to the second pad film under the action of electrostatic attraction. At the same time, the cutting device cuts the film that has finished winding on one side of the first take-up roller, allowing the first section of the cut film to adhere tightly to the second pad film under the action of electrostatic attraction, thus completing the automatic tape splicing without adhesive tape. After the splicing is completed, the second unwinding roller and the second winding roller continue to rotate, performing composite winding of the second pad film and the spliced ​​film. The equipment then enters the next round of composite winding. At this time, the first winding roller, which has already been wound, is in a non-winding position as the flipping frame rotates. The operator can remove the composite roll of film and first pad film from the first winding roller and re-attach a new roll of first pad film to the first unwinding roller. The beginning of the new first pad film is fixed on the first winding roller, preparing for the next switch of the first winding roller to the winding position. This cycle repeats, achieving continuous automatic splicing and winding operations. This tape-free automatic splicing and winding equipment uses a flipping frame to achieve alternating operation of the first and second winding rollers. An electrostatic generator charges the pad film, and a pressing and cutting device adheres the film to the pad film. This eliminates the need for workers to use tape, saving manual alignment and significantly shortening roll changeover time, thereby improving roll changeover efficiency.

[0008] The tapeless automatic tape splicing and winding device according to an embodiment of the present invention further includes a third swing arm and a third linear drive. The film pressing device includes a pressure roller, and the cutting device includes a cutter. One end of the third swing arm is rotatably connected to the frame, the pressure roller is rotatably connected to the third swing arm, and the cutter is disposed on the third swing arm. The cutter is located downstream of the pressure roller along the film conveying direction. The third linear drive is disposed on the frame and can drive the third swing arm to swing down so that while the pressure roller presses the film onto the first winding roller or the second winding roller, the cutter cuts the film.

[0009] According to the tapeless automatic tape splicing and winding device of the present utility model embodiment, the third linear drive component is a third cylinder, the cylinder body of the third cylinder is connected to the frame, and the piston rod of the third cylinder is hinged to the third swing arm.

[0010] The tapeless automatic tape splicing and winding equipment according to an embodiment of the present invention further includes an air blowing device, which is disposed on the third swing arm and located between the pressure roller and the cutter. The air blowing device is used to blow air downward so that the first segment formed by the film cutting is blown onto the first winding roller or the second winding roller.

[0011] According to the present invention, the tapeless automatic tape splicing and winding device includes a housing and an air pump. The housing is disposed on the third swing arm, and a plurality of air jet holes are evenly distributed on the bottom surface of the housing. The air pump is connected to the housing.

[0012] The tapeless automatic splicing and winding equipment according to an embodiment of the present invention further includes a first tension adjustment device, which is disposed on the flipping frame and is used to adjust the tension of the first pad film.

[0013] According to the tapeless automatic splicing and winding equipment of the present utility model embodiment, the first tension adjustment device includes a first swing arm, a first tension roller and a first linear drive member. The first tension roller is used for winding the first pad film. The first tension roller is rotatably connected to one end of the first swing arm. The middle part of the first swing arm is rotatably connected to the flipping frame. The first linear drive member is disposed on the flipping frame. The first linear drive member is used to drive the first swing arm to swing so that the first tension roller moves closer to or away from the first winding roller, and increases or decreases the tension of the first pad film.

[0014] According to the tapeless automatic tape splicing and winding device of the present utility model embodiment, the first linear drive component is a first cylinder, the cylinder body of the first cylinder is connected to the flipping frame, and the piston rod of the first cylinder is hinged to the other end of the first swing arm.

[0015] The tapeless automatic tape splicing and winding equipment according to an embodiment of the present invention further includes a second tension adjustment device, which is disposed on the flipping frame and is used to adjust the tension of the second pad film.

[0016] According to the tapeless automatic splicing and winding equipment of this utility model embodiment, the second tension adjustment device includes a second swing arm, a second tension roller, and a second linear drive. The second tension roller is used for winding the second pad film. The second tension roller is rotatably connected to one end of the second swing arm. The middle part of the second swing arm is rotatably connected to the flipping frame. The second linear drive is disposed on the flipping frame. The second linear drive is used to drive the second swing arm to swing, so that the second tension roller moves closer to or away from the second winding roller, and increases or decreases the tension of the second pad film.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 This is a side view of an automatic tape splicing and rewinding device without adhesive tape. Figure 2 This is a schematic diagram of the film feeding process when the first take-up roller is located at the take-up station; Figure 3 This is a schematic diagram of the film feeding process of the second take-up roller at the take-up station; Figure 4 This is a schematic diagram of the third swing arm, the third linear drive, the film pressing device, the cutting device, and the air blowing device; Icon labels: Tilting frame 100; first take-up roller 110; second take-up roller 120; first unwind roller 130; second unwind roller 140; Frame 200; electrostatic generator 210; film pressing device 220; pressure roller 221; cutting device 230; cutter 231; third swing arm 240; third linear drive 250; air blowing device 260; housing 261; First tension adjustment device 300; first swing arm 310; first tension roller 320; first linear drive component 330; Second tension adjustment device 400; First pad film 10; second pad film 20; thin film 30. Detailed Implementation

[0019] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not 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 this utility model.

[0020] In the description of this utility model, the use of "first" and "second" is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features or the order of the technical features.

[0021] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0022] refer to Figures 1 to 3 This utility model discloses an automatic tape-free splicing and winding device, including a frame 200, a flipping frame 100, a first winding roller 110, a first unwinding roller 130, a second winding roller 120, a second unwinding roller 140, an electrostatic generator 210, a film pressing device 220, and a cutting device 230.

[0023] The frame 200 is equipped with a winding station; a turnover frame 100 is rotatably connected to the frame 200; a first winding roller 110, a first unwinding roller 130, a second winding roller 120, and a second unwinding roller 140 are all rotatably connected to the turnover frame 100. The first unwinding roller 130 is used to unwind the first pad film 10, and the second unwinding roller 140 is used to unwind the second pad film 20. The turnover frame 100 can rotate so that the first winding roller 110 and the second winding roller 120 alternately rotate to the winding station. When the first winding roller 110 rotates to the winding station, it can perform composite winding of the first pad film 10 and the film 30. When the second winding roller 120 rotates to the winding station, it can perform composite winding of the second pad film 20 and the film 30. An electrostatic generator 210 is located on the frame 200 and at the winding station. When the first winding roller 110 rotates to the winding station... When the first take-up roller 110 is in its winding position, the electrostatic generator 210 can generate static electricity on the surface of the first pad film 10 on the first take-up roller 110. When the second take-up roller 120 rotates to the winding position, the electrostatic generator 210 can generate static electricity on the surface of the second pad film 20 on the second take-up roller 120. The film pressing device 220 is provided on the frame 200 and located at the winding position. When the first take-up roller 110 rotates to the winding position, the film pressing device 220 can press the film 30 onto the first pad film 10 on the first take-up roller 110 so that the film 30 is adhered to the first pad film 10. When the second take-up roller 120 rotates to the winding position, the film pressing device 220 can press the film 30 onto the second pad film 20 on the second take-up roller 120 so that the film 30 is adhered to the second pad film 20. The cutting device 230 is provided on the frame 200 and located at the winding position. The cutting device 230 is used to cut the film 30.

[0024] In this embodiment of the invention, the first take-up roller 110, the first unwind roller 130, the second take-up roller 120, and the second unwind roller 140 are parallel to each other and all parallel to the width direction of the film 30. When the flipping frame 100 remains stationary, the first take-up roller 110 and the second take-up roller 120 are symmetrical about the vertical direction, and the first unwind roller 130 and the second unwind roller 140 are symmetrical about the front-back direction. The flipping frame 100 only needs to rotate 180° each time to allow the first take-up roller 110 and the second take-up roller 120 to alternately rotate to the take-up position. In this embodiment of the invention, the tapeless automatic splicing and winding device further includes multiple drive motors. The output ends of the multiple drive motors are respectively connected to a first take-up roller 110, a first unwind roller 130, a second take-up roller 120, and a second unwind roller 140, so that the multiple drive motors can respectively drive the first take-up roller 110, the first unwind roller 130, the second take-up roller 120, and the second unwind roller 140 to rotate. This allows the first take-up roller 110 to perform composite winding of the first pad film 10 and the film 30, the first unwind roller 130 to unwind the first pad film 10, the second take-up roller 120 to perform composite winding of the second pad film 20 and the film 30, and the second unwind roller 140 to unwind the second pad film 20. Further details are omitted here. The tapeless automatic splicing and winding device also includes a flipping drive motor, which drives the flipping frame 100 to rotate. Further details are omitted here.

[0025] In this embodiment of the invention, a first pad film 10 and a second pad film 20 are respectively sleeved on the first unwinding roller 130 and the second unwinding roller 140. When the first unwinding roller 130 and the second unwinding roller 140 rotate, they release the first pad film 10 and the second pad film 20 respectively, so that the first winding roller 110 can perform composite winding of the first pad film 10 and the film 30, and the second winding roller 120 can perform composite winding of the second pad film 20 and the film 30. The first pad film 10 and the second pad film 20 are both common PET pad films, which will not be described further here. It should be noted that in this embodiment of the invention, the pad film refers to either the first pad film 10 or the second pad film 20.

[0026] In this embodiment of the invention, the electrostatic generating device is a common electrostatic rod (high-voltage discharge rod). The electrostatic rod is powered by a high-voltage power supply, causing the discharge needles of the rod to generate a tip discharge phenomenon, ionizing the surrounding air to form charged ions. When the first pad 10 or the second pad 20 passes near the electrostatic rod, the charged ions adhere to the surface of the pad, causing the pad to become electrostatically charged. Due to the adsorption properties of static electricity, the charged pad can quickly adhere to the film 30, and the adhesion process does not rely on adhesive tape, avoiding the impact of tape residue on the performance of the film 30, while improving the bonding efficiency. The electrostatic rod is a common device for generating static electricity and will not be described further here.

[0027] In this embodiment of the invention, the tapeless automatic splicing and winding device includes multiple first traction rollers, multiple second traction rollers, and multiple third traction rollers. The multiple first traction rollers are all used for winding a first pad film 10, the multiple second traction rollers are all used for winding a second pad film 20, and the multiple third traction rollers are all used for winding a film 30. The traction rollers are common rollers used in the coating field and will not be described further here.

[0028] Understandably, when the tapeless automatic splicing and winding equipment starts working, in the initial state, the flipping frame 100 is in a specific position, so that the first winding roller 110 is located at the winding station of the frame 200. At this time, the first unwinding roller 130 is fitted with a roll of the first pad film 10. The operator first pulls the first end of the first pad film 10 out from the first unwinding roller 130 and guides it to the first winding roller 110 at the winding station, and fixes the first end of the first pad film 10 on the first winding roller 110. Subsequently, the equipment starts, and the first winding roller 110 and the first unwinding roller 130 start to rotate simultaneously. During the rotation of the first unwinding roller 130, the first pad film 10 is continuously unwound, while the first winding roller 110, while rotating, performs composite winding of the unwound first pad film 10 with the film 30 (such as a coated diaphragm) to be wound, that is, the film 30 and the first pad film 10 are adhered to each other and are wound together on the first winding roller 110. During the composite winding process of the first take-up roller 110, preparations can be made in advance for the operation of the second take-up roller 120. The second pad film 20, which is sleeved on the second unwind roller 140, is pulled out, and the first end of the second pad film 20 is led to the second take-up roller 120 and fixed on the second take-up roller 120. This completes the pre-preparation work for the second take-up roller 120, which is ready for subsequent switching to the take-up station.

[0029] When the first take-up roller 110 finishes winding, both the first take-up roller 110 and the first unwind roller 130 stop rotating, ending the current composite winding operation. Immediately afterwards, the tilting frame 100 begins to rotate, moving the first take-up roller 110 away from the winding station and causing the second take-up roller 120 to rotate to the winding station. Once the second take-up roller 120 has reached the winding station, the tilting frame 100 stops rotating, the second unwind roller 140 rotates to release the second pad film 20, and the second take-up roller 120 begins to rotate and wind up the second pad film 20. Simultaneously, the electrostatic generator 210 is activated, generating static electricity on the surface of the second pad film 20. After the electrostatic generator 210, the second take-up roller 120, and the second unwind roller 140 start for a preset time and then shut down, the film pressing device 220 starts, pressing the film 30 against the second pad film 20 on the second take-up roller 120. Because the surface of the second pad film 20 carries static electricity, the film 30 adheres tightly to the second pad film 20 under the action of electrostatic attraction. Simultaneously, the cutting device 230 cuts the film 30 that has been wound on one side of the first take-up roller 110, allowing the first segment of the cut film 30 to adhere tightly to the second pad film 20 under the action of electrostatic attraction, thus completing the automatic tape splicing without adhesive tape. After splicing is completed, the second unwind roller 140 continues to rotate, and the second take-up roller 120 continues to rotate, performing composite winding of the second pad film 20 and the spliced ​​film 30, and the equipment enters the next round of composite winding operation. Meanwhile, the first take-up roller 110, which has already completed winding, is in a non-winding position as the flipping frame 100 rotates. The operator can remove the composite roll of film 30 and first padding film 10 wound on the first take-up roller 110 and re-wrap a new roll of first padding film 10 onto the first unwinding roller 130. The first end of the new first padding film 10 is fixed to the first take-up roller 110, preparing for the next switching of the first take-up roller 110 to the winding position. This cycle repeats, enabling continuous automatic tape splicing and winding operations. This tapeless automatic tape splicing and winding equipment uses the flipping frame 100 to allow the first take-up roller 110 and the second take-up roller 120 to work alternately. Combined with the electrostatic generator 210 to charge the padding film, and the pressing device 220 and cutting device 230 to bond the film 30 to the padding film, the equipment eliminates the need for workers to use tape, saving manual alignment and significantly shortening the roll change time, thereby improving roll change efficiency.

[0030] It should be explained that the preset time can be 3 to 6 seconds to ensure that static electricity is generated on the surfaces of the first pad film 10 and the second pad film 20 wrapped on the first take-up roller 110 and the second take-up roller 120.

[0031] refer to Figures 2 to 4The tapeless automatic splicing and winding equipment also includes a third swing arm 240 and a third linear drive 250. The film pressing device 220 includes a pressure roller 221, and the cutting device 230 includes a cutter 231. One end of the third swing arm 240 is rotatably connected to the frame 200. The pressure roller 221 is rotatably connected to the third swing arm 240. The cutter 231 is located on the third swing arm 240 and downstream of the pressure roller 221 along the film 30 conveying direction. The third linear drive 250 is located on the frame 200 and can drive the third swing arm 240 to swing down, so that while the pressure roller 221 presses the film 30 onto the first pad film 10 on the first winding roller 110 or the second pad film 20 on the second winding roller 120, the cutter 231 cuts the film 30. Here, the description assumes that the first winding roller 110 has completed winding and the second winding roller 120 has rotated to the winding station.

[0032] Understandably, when the first take-up roller 110 finishes winding and stops rotating, the flipping frame 100 drives the second take-up roller 120 to the take-up position. Then, the second unwind roller 140 starts to release the second pad film 20, and the second take-up roller 120 starts to wind up the second pad film 20. Simultaneously, the electrostatic generator 210 starts to charge the surface of the second pad film 20. After the second unwind roller 140, the second take-up roller 120, and the electrostatic generator 210 have been running for a preset time, they stop. At this time, the third linear drive 250 starts to move, driving the third swing arm 240 to swing downward. As the third swing arm 240 swings downward, the pressure roller 221 and cutter 231 on the swing arm simultaneously approach the film 30, ultimately acting on the film 30 at the same time. The pressure roller 221 presses the film 30 tightly onto the charged second pad film 20 on the second take-up roller 120, achieving a tight bond between the film 30 and the second pad film 20 through electrostatic adsorption. Simultaneously, the cutter 231, located downstream of the pressure roller 221, cuts the film 30 to complete the tape splicing. After the splicing is completed, the third linear drive 250 drives the third swing arm 240 to swing upward and reset. The pressure roller 221 and cutter 231 simultaneously detach from the film 30 and move away from the second take-up roller 120. The second take-up roller 120 and the second unwind roller 140 continue to rotate, performing composite winding of the bonded film 30 and the second pad film 20. The pressure roller 221 and the cutter 231 are both mounted on the third swing arm 240. The third linear drive 250 enables both to act synchronously on the film 30, so that the single drive of the third linear drive can simultaneously complete the film pressing and cutting actions, greatly shortening the time interval of the roll changing process and further improving the roll changing efficiency of the equipment.

[0033] refer to Figures 2 to 4The third linear drive component 250 is a third cylinder, the cylinder body of which is connected to the frame 200, and the piston rod of which is hinged to the third swing arm 240. It can be understood that when the piston rod of the third cylinder extends, the third swing arm 240 swings downward; when the piston rod of the third cylinder retracts, the third swing arm 240 swings upward. Further details are omitted here. In this embodiment of the invention, the pressure roller 221 and the cutter 231 are common configurations in coating roll-changing equipment. The length directions of both the pressure roller 221 and the cutter 231 are parallel to the length directions of the first take-up roller 110 and the second take-up roller 120. Further details are omitted here.

[0034] refer to Figure 4 The tapeless automatic splicing and winding equipment also includes an air blowing device 260, which is mounted on the third swing arm 240 and located between the pressure roller 221 and the cutter 231. The air blowing device 260 is used to blow air downwards so that the first segment formed by cutting the film 30 is blown onto the first pad film 10 on the first winding roller 110 or the second pad film 20 on the second winding roller 120. Here, the description assumes that the first winding roller 110 has completed winding and the second winding roller 120 has rotated to the winding station. It can be understood that when the first winding roller 110 has completed winding and stopped rotating, after the flipping frame 100 drives the second winding roller 120 to rotate to the winding station, the second unwinding roller 140, the second winding roller 120, and the electrostatic generator 210 are simultaneously activated to charge the surface of the second pad film 20. After a preset running time, the second unwinding roller 140, the second take-up roller 120, and the electrostatic generator 210 stop, and the third linear drive 250 drives the third swing arm 240 to swing downwards. During the downward swing of the third swing arm 240, the air blowing device 260, the pressure roller 221, and the cutter 231 simultaneously approach the film 30. Finally, the pressure roller 221 and the cutter 231 act on the film 30 simultaneously. The pressure roller 221 presses the film 30 tightly onto the charged second pad film 20 on the second take-up roller 120, and the film is initially bonded by electrostatic adsorption. The cutter 231 simultaneously cuts the film 30, forming the first segment of the film 30 to be continued. Almost simultaneously with the cutting, the air blowing device 260, located between the pressure roller 221 and the cutter 231, starts and blows air downwards. The airflow acts on the newly cut first segment of the film 30, blowing it towards and bonding it to the second pad film 20 on the second take-up roller 120. The combination of electrostatic adsorption and the pressure of the pressure roller 221 further ensures a firm bond. After the splicing is completed, the third linear drive 250 drives the third swing arm 240 to swing upward and reset. The pressure roller 221, cutter 231, and air blowing device 260 move away from the second take-up roller 120, and the air blowing device 260 stops working. The second take-up roller 120 and the second unwind roller 140 continue to rotate for composite winding. The air blowing device 260 can quickly blow the first segment of the cut film 30 onto the corresponding pad film surface, preventing the first segment of the film 30 from shifting or lifting due to its own tension or gravity, so that the first segment of the film 30 can be attached to the pad film in time, improving the success rate of splicing.

[0035] refer to Figure 4 The air blowing device 260 includes a housing 261 and an air pump. The housing 261 is mounted on the third swing arm 240, and multiple air jet holes are evenly distributed on the bottom surface of the housing 261. The air pump is connected to the housing 261. It is understood that the air blowing device 260 also includes an air supply pipe, through which the air pump is connected to the housing 261. When the air pump is activated, the gas inside the housing 261 can be ejected through the multiple air jet holes, causing the ejected gas to act on the first section of the film 30. Further details are omitted here. In this embodiment of the invention, the length of the housing 261 is greater than the width of the film 30, and the length direction of the housing 261 is parallel to the length direction of the first take-up roller 110 and the second take-up roller 120.

[0036] refer to Figures 1 to 3 The tapeless automatic splicing and winding equipment also includes a first tension adjustment device 300, which is mounted on the flipping frame 100 and is used to adjust the tension of the first pad film 10. The tapeless automatic splicing and winding equipment also includes a second tension adjustment device 400, which is mounted on the flipping frame 100 and is used to adjust the tension of the second pad film 20. It is understood that the first tension adjustment device 300 and the second tension adjustment device 400 can independently adjust the tension of the first pad film 10 and the second pad film 20 respectively, ensuring that when the first winding roller 110 or the second winding roller 120 is in the winding position, the corresponding pad film always maintains a suitable tension, avoiding wrinkles or shifts during winding due to excessive looseness, or stretching deformation or even breakage due to excessive tightness, thereby ensuring the flatness and stability of the composite winding of the pad film and the film 30, and further improving the winding quality.

[0037] refer to Figure 3The first tension adjustment device 300 includes a first swing arm 310, a first tension roller 320, and a first linear drive 330. The first tension roller 320 is used for winding the first pad film 10. The first tension roller 320 is rotatably connected to one end of the first swing arm 310, and the middle part of the first swing arm 310 is rotatably connected to the turning frame 100. The first linear drive 330 is disposed on the turning frame 100 and is used to drive the first swing arm 310 to swing, so that the first tension roller 320 moves closer to or further away from the first take-up roller 110, and increases or decreases the tension of the first pad film 10. It can be understood that when the first take-up roller 110 is in the take-up position and is performing composite take-up of the first pad film 10 and the film 30, if it is necessary to adjust the tension of the first pad film 10, the first linear drive 330 is activated and drives the first swing arm 310 to swing. If the first linear drive 330 pushes the first swing arm 310 to swing closer to the first take-up roller 110, the first tension roller 320 at the end of the first swing arm 310 will also move closer to the first take-up roller 110. At this time, the support position of the first tension roller 320 on the first pad film 10 changes, the winding path of the first pad film 10 is lengthened, and the tension increases. If the first linear drive 330 pulls the first swing arm 310 to swing away from the first take-up roller 110, the first tension roller 320 will move away from the first take-up roller 110 along with the swing arm, the winding path of the first pad film 10 will shorten, and the tension decreases. The first linear drive 330 is a first cylinder. The cylinder body of the first cylinder is connected to the tilting frame 100, and the piston rod of the first cylinder is hinged to the other end of the first swing arm 310. It is understandable that when the piston rod of the first cylinder extends, the first tension roller 320 moves away from the first take-up roller 110, and when the piston rod of the first cylinder retracts, the first tension roller 320 moves closer to the first take-up roller 110. This will not be elaborated further here.

[0038] refer to Figure 3 The second tension adjustment device 400 includes a second swing arm, a second tension roller, and a second linear drive. The second tension roller is used for winding the second film 20. The second tension roller is rotatably connected to one end of the second swing arm, and the middle part of the second swing arm is rotatably connected to the turning frame 100. The second linear drive is mounted on the turning frame 100 and is used to drive the second swing arm to swing, so that the second tension roller moves closer to or further away from the second take-up roller 120, and the tension of the second film 20 increases or decreases. The second linear drive is a second cylinder. The cylinder body is connected to the turning frame 100, and the piston rod of the second cylinder is hinged to the other end of the second swing arm. The principle of the second tension adjustment device 400 is the same as that of the first tension adjustment device 300, and will not be described further here.

[0039] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0040] Of course, this utility model is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of this utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. An automatic tape splicing and rewinding device without adhesive tape, characterized in that, include: The frame (200) is equipped with a winding station; A tilting frame (100) is rotatably connected to the frame (200); The first take-up roller (110), the first unwind roller (130), the second take-up roller (120), and the second unwind roller (140) are all rotatably connected to the flipping frame (100). The first unwind roller (130) is used to unwind the first pad film (10), and the second unwind roller (140) is used to unwind the second pad film (20). The flipping frame (100) can rotate so that the first take-up roller (110) and the second take-up roller (120) alternately rotate to the take-up station. When the first take-up roller (110) rotates to the take-up station, it can perform composite take-up of the first pad film (10) and the film (30). When the second take-up roller (120) rotates to the take-up station, it can perform composite take-up of the second pad film (20) and the film (30). An electrostatic generator (210) is provided on the frame (200) and located at the winding station. When the first winding roller (110) rotates to the winding station, the electrostatic generator (210) can generate static electricity on the surface of the first pad film (10) on the first winding roller (110). When the second winding roller (120) rotates to the winding station, the electrostatic generator (210) can generate static electricity on the surface of the second pad film (20) on the second winding roller (120). A film pressing device (220) is provided on the frame (200) and located at the winding station. When the first winding roller (110) rotates to the winding station, the film pressing device (220) can press the film (30) onto the first pad film (10) on the first winding roller (110) so that the film (30) and the first pad film (10) are bonded together. When the second winding roller (120) rotates to the winding station, the film pressing device (220) can press the film (30) onto the second pad film (20) on the second winding roller (120) so that the film (30) and the second pad film (20) are bonded together. A cutting device (230) is provided on the frame (200) and located at the winding station. The cutting device (230) is used to cut the film (30).

2. The tapeless automatic splicing and winding equipment according to claim 1, characterized in that: It also includes a third swing arm (240) and a third linear drive (250). The film pressing device (220) includes a pressure roller (221), and the cutting device (230) includes a cutter (231). One end of the third swing arm (240) is rotatably connected to the frame (200), the pressure roller (221) is rotatably connected to the third swing arm (240), and the cutter (231) is disposed on the third swing arm (240). 1) Located downstream of the pressure roller (221) along the film (30) conveying direction, the third linear drive (250) is mounted on the frame (200). The third linear drive (250) can drive the third swing arm (240) to swing down so that while the pressure roller (221) presses the film (30) onto the first take-up roller (110) or the second take-up roller (120), the cutter (231) cuts the film (30).

3. The tapeless automatic splicing and winding equipment according to claim 2, characterized in that: The third linear drive (250) is a third cylinder, the cylinder body of the third cylinder is connected to the frame (200), and the piston rod of the third cylinder is hinged to the third swing arm (240).

4. The tapeless automatic splicing and winding equipment according to claim 2, characterized in that: It also includes an air blowing device (260), which is disposed on the third swing arm (240) and located between the pressure roller (221) and the cutter (231). The air blowing device (260) is used to blow air downward so that the first segment formed by the cutting of the film (30) is blown onto the first take-up roller (110) or the second take-up roller (120).

5. The tapeless automatic splicing and winding equipment according to claim 4, characterized in that: The air blowing device (260) includes a housing (261) and an air pump. The housing (261) is mounted on the third swing arm (240). Multiple air jet holes are evenly distributed on the bottom surface of the housing (261). The air pump is connected to the housing (261).

6. The tapeless automatic splicing and winding equipment according to claim 1, characterized in that: It also includes a first tension adjustment device (300), which is disposed on the flipping frame (100) and is used to adjust the tension of the first pad film (10).

7. The tapeless automatic splicing and winding equipment according to claim 6, characterized in that: The first tension adjustment device (300) includes a first swing arm (310), a first tension roller (320), and a first linear drive (330). The first tension roller (320) is used for winding the first pad film (10). The first tension roller (320) is rotatably connected to one end of the first swing arm (310). The middle part of the first swing arm (310) is rotatably connected to the flipping frame (100). The first linear drive (330) is disposed on the flipping frame (100). The first linear drive (330) is used to drive the first swing arm (310) to swing so that the first tension roller (320) moves closer to or away from the first take-up roller (110) and increases or decreases the tension of the first pad film (10).

8. The tapeless automatic splicing and winding device according to claim 7, characterized in that: The first linear drive (330) is a first cylinder, the cylinder body of the first cylinder is connected to the tilting frame (100), and the piston rod of the first cylinder is hinged to the other end of the first swing arm (310).

9. The tapeless automatic splicing and winding device according to claim 1, characterized in that: It also includes a second tension adjustment device (400), which is disposed on the flipping frame (100) and is used to adjust the tension of the second pad film (20).

10. The tapeless automatic splicing and winding device according to claim 9, characterized in that: The second tension adjustment device (400) includes a second swing arm, a second tension roller, and a second linear drive. The second tension roller is used for winding the second pad film (20). The second tension roller is rotatably connected to one end of the second swing arm. The middle part of the second swing arm is rotatably connected to the flipping frame (100). The second linear drive is located on the flipping frame (100). The second linear drive is used to drive the second swing arm to swing so that the second tension roller moves closer to or away from the second take-up roller (120) and increases or decreases the tension of the second pad film (20).

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