Automatic roll film changing device

Abstract

The utility model discloses an automatic roll film changing device which comprises a conveying mechanism and a roll film changing mechanism. The film combining mechanism comprises a first film combining piece and a second film combining piece, the first film combining piece is arranged on the outer side portion of the first film material, the second film combining piece is arranged on the outer side portion of the second film material, and the first film combining piece and the second film combining piece move oppositely so that the bonding face of the first film material and the bonding face of the second film material can be attached to form a switching section; the first film combining piece and / or the second film combining piece move / moves in the length direction of the switching section so as to increase the attaching degree of the switching section; and the cutting-off mechanism is used for cutting off the first film material and / or the second film material. The first film combining piece and the second film combining piece move in the opposite directions, so that the bonding face of the first film material and the bonding face of the second film material are attached to form the switching section, and the first film combining piece and / or the second film combining piece move in the length direction of the switching section to increase the attaching degree of the switching section. And the problems that the adapter section is not tightly attached and is easy to fall off are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to an automatic film-rolling device. Background Art

[0002] The battery industry requires film materials for battery production. Film materials are generally supplied in the form of film rolls. When a film roll is used up, it needs to be replaced with the next one. The new and old film rolls need to be bonded manually or with equipment. The manual bonding method not only affects the production progress but is also dangerous. Existing film roll changing equipment generally uses two push plates moving towards each other to complete the bonding of the new and old film rolls. This method may result in the bonding of the new and old film rolls being loose and easy to fall off. Utility Model Content

[0003] In order to overcome at least one of the defects described in the above-mentioned prior art, the utility model provides an automatic film roll changing device, in which the first film part and the second film part move toward each other so that the bonding surface of the first film material is bonded to the bonding surface of the second film material to form a transition section, and the first film part and / or the second film part moves along the length direction of the transition section to increase the degree of bonding of the transition section and reduce the problem of loose bonding and easy falling off of the transition section.

[0004] The technical solution adopted by the present invention to solve the problem is:

[0005] An automatic film-changing device, comprising:

[0006] The conveying mechanism includes a first conveying unit and a second conveying unit, the first conveying unit is used to convey the first film material, and the second conveying unit is used to convey the second film material;

[0007] The film closing mechanism includes a first film closing member and a second film closing member, wherein the first film closing member is arranged on the outer side of the first film material, and the second film closing member is arranged on the outer side of the second film material. The first film closing member and the second film closing member move toward each other so that the bonding surface of the first film material and the bonding surface of the second film material are bonded to form a transition section;

[0008] The first film-closing member and / or the second film-closing member moves along the length direction of the transition section to increase the degree of fit of the transition section;

[0009] The cutting mechanism is used to cut the first film material and / or the second film material.

[0010] In a preferred embodiment, the first conveying unit includes a first unwinding roller and a plurality of first conveying rollers, the first film roll is sleeved on the first unwinding roller for unwinding the first film material, and the first conveying rollers are used to convey the first film material;

[0011] The second conveying unit includes a second unwinding roller and a plurality of second conveying rollers. The second film roll is sleeved on the second unwinding roller for unwinding the second film material. The second conveying rollers are used to convey the second film material.

[0012] In a preferred embodiment, the automatic film-changing device further comprises a pressing mechanism, which comprises a first pressing member, a second pressing member, a first pressing drive member, and a second pressing drive member;

[0013] A first pressing member is provided on both sides of the first film material, and the two first pressing members are respectively driven by the corresponding first pressing driving member to move toward each other to fix the first film material, or a first pressing member and a first conveying roller are respectively provided on both sides of the first film material, and the first pressing member is driven by the corresponding first pressing driving member to move toward the corresponding first conveying roller to fix the first film material;

[0014] A second pressing member is provided on both sides of the second film material, and the two second pressing members move toward each other under the drive of the corresponding second pressing driving member to fix the second film material, or a second pressing member and a second conveying roller are provided on both sides of the first film material, and the second pressing member moves toward the corresponding second conveying roller under the drive of the corresponding second pressing driving member to fix the second film material.

[0015] In a preferred embodiment, the first film-forming component is a plate-shaped structure, and the second film-forming component is a roller structure;

[0016] Alternatively, the first film-forming component is a roller structure, and the second film-forming component is a plate structure;

[0017] Alternatively, the first membrane-jointed member is a plate-shaped structure, and the second membrane-jointed member is a plate-shaped structure;

[0018] Alternatively, the first film-forming component is a drum structure, and the second film-forming component is a drum structure.

[0019] In a preferred embodiment, when the first film-forming component is a plate-shaped structure and the second film-forming component is a roller structure;

[0020] The film closing mechanism further includes a first mounting seat, a second mounting seat, a first film closing driving member, a second film closing driving member and a third film closing driving member;

[0021] The first membrane-closing member is arranged on the first mounting seat to form a first membrane-closing integrated structure, and the first membrane-closing driving member drives the first membrane-closing integrated structure to move;

[0022] The second membrane-closing member and the third membrane-closing driving member are both arranged on the second mounting seat to form a second membrane-closing integrated structure. The second membrane-closing driving member drives the second membrane-closing integrated structure to move, and the third membrane-closing driving member drives the second membrane-closing member to move.

[0023] In a preferred embodiment, the film closing mechanism further includes a film closing track, which is arranged in a transverse direction or a longitudinal direction, and the first mounting seat and the second mounting seat are both slidably connected to the film closing track;

[0024] When the transfer section is arranged along the longitudinal direction, the film closing track is arranged along the transverse direction;

[0025] When the transfer section is arranged along the transverse direction, the film closing track is arranged along the longitudinal direction.

[0026] In a preferred embodiment, the cutting mechanism includes a first cutter, a second cutter, a third cutter, and a fourth cutter;

[0027] The first cutter is used to cut off the end of the first film material, and the second cutter is used to cut off the beginning of the second film material;

[0028] Alternatively, the third cutter is used to cut off the head end of the first film material, and the fourth cutter is used to cut off the tail end of the second film material.

[0029] In a preferred embodiment, the automatic film changing device further comprises a roll changing detection device, which comprises a distance detector and a magnetic powder controller;

[0030] The first conveying unit further includes a first motor, the first motor is used to drive the first unwinding roller to rotate, and the second conveying unit further includes a second motor, the second motor is used to drive the second unwinding roller to rotate;

[0031] The roll-changing detection device, the magnetic powder controller, the first motor and the second motor are electrically connected or connected through electrical signals.

[0032] In a preferred embodiment, the automatic film changing device further comprises a negative pressure detection mechanism, which comprises a negative pressure plate, a negative pressure driving member, and a negative pressure detection unit;

[0033] The negative pressure driving member drives the negative pressure plate to rotate to fit the transition section, and the detection unit detects the negative pressure value of the transition section.

[0034] In a preferred embodiment, the automatic film-changing device further comprises a deviation-correcting mechanism, which comprises a first deviation-correcting detector and a second deviation-correcting detector;

[0035] The first deviation correction detector is arranged close to the first conveying unit, and is used to correct the deviation of the first conveying unit;

[0036] The second deflection correction detector is arranged close to the second conveying unit, and is used to correct the deflection of the second conveying unit.

[0037] In summary, the utility model has the following technical effects: in the utility model, the first film-joining part and the second film-joining part move toward each other so that the bonding surface of the first film material is bonded to the bonding surface of the second film material to form a transition section, and the first film-joining part and / or the second film-joining part moves along the length direction of the transition section to increase the degree of bonding of the transition section and reduce the problem of loose bonding and easy falling off of the transition section. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 This is a schematic diagram of the overall structure of the utility model from the first perspective;

[0039] Figure 2 This is a structural diagram of the membrane closing mechanism of the utility model;

[0040] Figure 3 This is a structural diagram of the utility model from a second viewing angle.

[0041] The meanings of the reference numerals are as follows:

[0042] 10. Conveying mechanism, 101. First unwinding roller, 102. First conveying roller, 103. Second unwinding roller, 104. Second conveying roller, 20. First film material, 30. Second film material, 40. Film closing mechanism, 401. First film closing member, 402. Second film closing member, 403. First mounting seat, 404. Second mounting seat, 405. First film closing drive member, 406. Second film closing drive member, 407. Third film closing drive member, 408. Film closing track, 50. Cutting Mechanism, 501, first cutter, 502, second cutter, 503, third cutter, 504, fourth cutter, 60, clamping mechanism, 601, first clamping member, 602, second clamping member, 603, first clamping drive member, 604, second clamping drive member, 70, roll changing detection device, 701, distance detector, 702, magnetic powder controller, 80, negative pressure detection mechanism, 90, deviation correction mechanism, 901, first deviation correction detector, 902, second deviation correction detector. DETAILED DESCRIPTION

[0043] For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0044] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0045] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0046] See Figure 1-Figure 3 The utility model discloses an automatic film changing device, comprising: a conveying mechanism 10, the conveying mechanism 10 includes a first conveying unit and a second conveying unit, the first conveying unit is used to convey the first film material 20, and the second conveying unit is used to convey the second film material 30; a film closing mechanism 40, the film closing mechanism 40 includes a first film closing component 401 and a second film closing component 402, the first film closing component 401 is arranged on the outer side of the first film material 20, and the second film closing component 402 is arranged on the outer side of the second film material 30, the first film closing component 401 and the second film closing component 402 move toward each other so that the bonding surface of the first film material 20 and the bonding surface of the second film material 30 are bonded to form a transition section; the first film closing component 401 and / or the second film closing component 402 move along the length direction of the transition section to increase the bonding degree of the transition section; a cutting mechanism 50, the cutting mechanism 50 is used to cut the first film material 20 and / or the second film material 30.

[0047] It should be noted that the bonding surface of the first film material 20 is an adhesive surface, and the bonding surface of the second film material 30 is an adhesive back surface; or the bonding surface of the first film material 20 is an adhesive back surface, and the bonding surface of the second film material 30 is an adhesive surface; or the bonding surface of the first film material 20 and the bonding surface of the second film material 30 are both adhesive surfaces; the specific type of the bonding surface of the first film material 20 and the bonding surface of the second film material 30 depends on the actual application scenario and is not limited.

[0048] The first film-closing component 401 and the second film-closing component 402 move toward each other, so that the bonding surface of the first film material 20 and the bonding surface of the second film material 30 are attached to form a transition section.

[0049] The specific position where the cutting mechanism 50 cuts off the first film material 20 and / or the second film material 30 is based on whether or not roll change can be achieved.

[0050] In the present invention, the first film-joining component 401 and the second film-joining component 402 move toward each other so that the bonding surface of the first film material 20 and the bonding surface of the second film material 30 are bonded to form a transition section, and the first film-joining component 401 and / or the second film-joining component 402 move along the length direction of the transition section to increase the degree of bonding of the transition section and reduce the problem of loose bonding and easy falling off of the transition section.

[0051] In an embodiment of the present invention, the first conveying unit includes a first unwinding roller 101 and several first conveying rollers 102. The first film roll is sleeved on the first unwinding roller 101 for releasing the first film material 20, and the first conveying roller 102 is used to convey the first film material 20; the second conveying unit includes a second unwinding roller 103 and several second conveying rollers 104. The second film roll is sleeved on the second unwinding roller 103 for releasing the second film material 30, and the second conveying roller 104 is used to convey the second film material 30.

[0052] Specifically, there are two first unwinding rollers 101, and the first film roll includes a first base film roll and a first release film roll. The first base film roll is mounted on one of the first unwinding rollers 101, and the first release film roll is mounted on another of the first unwinding rollers 101. The film material released from the first base film roll and the film material released from the first release film roll are bonded to form a first film material 20; there are two second unwinding rollers 103, and the second film roll includes a second base film roll and a second release film roll. The second base film roll is mounted on two of the second unwinding rollers 103, and the second release film roll is mounted on another of the second unwinding rollers 103. The film material released from the second base film roll and the film material released from the second release film roll are bonded to form a second film material 30.

[0053] Alternatively, the first unwinding roller 101 is provided with one, the first film roll is a film roll wound with the first film material 20 , and the second unwinding roller 103 is provided with one, the second film roll is a film roll wound with the second film material 30 .

[0054] It should be noted that the first film roll is an old film roll that is about to be used up, and the second film roll is an unused new film roll; or the first film roll is an unused new film roll, and the second film roll is an old film roll that is about to be used up; the first film roll and the second film roll can serve as spare film rolls for each other.

[0055] See Figure 1 , an example is given in which the first film roll is an old film roll that is about to be used up, and the second film roll is an unused new film roll.

[0056] In an embodiment of the present invention, the automatic film changing device further includes a clamping mechanism 60, which includes a first clamping member 601, a second clamping member 602, a first clamping drive member 603, and a second clamping drive member 604; first clamping members 601 are provided on both sides of the first film material 20, and the two first clamping members 601 are respectively driven by the corresponding first clamping drive members 603 to move toward each other to fix the first film material 20, or first clamping members 601 and first conveying rollers 102 are respectively provided on both sides of the first film material 20, and the first clamping members 601 are respectively provided at the sides of the first film material 20. Driven by the corresponding first clamping driving member 603, it moves toward the corresponding first conveying roller 102 to fix the first film material 20; a second clamping member 602 is provided on both sides of the second film material 30, and the two second clamping members 602 move toward each other under the drive of the corresponding second clamping driving member 604 to fix the second film material 30, or a second clamping member 602 and a second conveying roller 104 are provided on both sides of the first film material 20, and the second clamping member 602 moves toward the corresponding second conveying roller 104 under the drive of the corresponding second clamping driving member 604 to fix the second film material 30.

[0057] Specifically, the first pressing member 601 is a pressing block or a pressing roller; the second pressing member 602 is a pressing block or a pressing roller; the first pressing driving member 603 is an air cylinder or an oil cylinder, and the telescopic rod of the first pressing driving member 603 is connected and fixed to the first pressing member 601, and the telescopic rod of the first pressing driving member 603 is telescopic to drive the first pressing member 601 to move; the second pressing driving member 604 is an air cylinder or an oil cylinder, and the telescopic rod of the second pressing driving member 604 is connected and fixed to the second pressing member 602, and the telescopic rod of the second pressing driving member 604 is telescopic to drive the second pressing member 602 to move.

[0058] It should be noted that when the film roll needs to be replaced, since the first film roll is an old film roll and the second film roll is a new film roll, the first clamping member 601 fixes the first film material 20 so that the first film material 20 no longer moves forward, and the second clamping member 602 fixes the second film material 30 to facilitate the film closing mechanism 40 to perform the film closing action; in order not to affect production, the clamping time of the clamping mechanism 60 is relatively short, and the clamping time of the clamping mechanism 60 is generally 0.5s-5s, which depends on the actual application scenario and is not limited.

[0059] In an embodiment of the present invention, the first film-forming component 401 is a plate-like structure, and the second film-forming component 402 is a roller structure; or, the first film-forming component 401 is a roller structure, and the second film-forming component 402 is a plate-like structure; or, the first film-forming component 401 is a plate-like structure, and the second film-forming component 402 is a plate-like structure; or, the first film-forming component 401 is a roller structure, and the second film-forming component 402 is a roller structure.

[0060] It should be noted that the plate-like structure has side surfaces for assisting lamination, and the roller structure can rotate on its own.

[0061] When the first film-closing member 401 is a plate-shaped structure and the second film-closing member 402 is a roller structure, when the first film-closing member 401 and the second film-closing member 402 are closed, the first film-closing member 401 and the transition section are in surface contact, and the second film-closing member 402 and the transition section are in line contact.

[0062] When the first film-closing member 401 is a roller structure and the second film-closing member 402 is a plate structure, when the first film-closing member 401 and the second film-closing member 402 are closed, the first film-closing member 401 and the transition section are in line contact, and the second film-closing member 402 and the transition section are in surface contact.

[0063] When the first film-closing member 401 is a plate-shaped structure and the second film-closing member 402 is a plate-shaped structure, when the first film-closing member 401 and the second film-closing member 402 are closed, the first film-closing member 401 and the second film-closing member 402 are in surface contact with the transition section.

[0064] When the first film closing member 401 is a roller structure and the second film closing member 402 is a roller structure, when the first film closing member 401 and the second film closing member 402 are closed, the first film closing member 401 and the second film closing member 402 are in line contact with the transition section.

[0065] See Figure 1 as well as Figure 2 , the first film-forming component 401 is a plate-shaped structure, and the second film-forming component 402 is a roller structure for further description.

[0066] In an embodiment of the present invention, when the first film-forming component 401 is a plate-shaped structure and the second film-forming component 402 is a roller structure; the film-forming mechanism 40 also includes a first mounting seat 403, a second mounting seat 404, a first film-forming driving component 405, a second film-forming driving component 406 and a third film-forming driving component 407; the first film-forming component 401 is arranged on the first mounting seat 403 to form a first film-forming integrated structure, and the first film-forming driving component 405 drives the first film-forming integrated structure to move; the second film-forming component 402 and the third film-forming driving component 407 are both arranged on the second mounting seat 404 to form a second film-forming integrated structure, the second film-forming driving component 406 drives the second film-forming integrated structure to move, and the third film-forming driving component 407 drives the second film-forming component 402 to move.

[0067] Specifically, the first mounting seat 403 is a block or a plate; the second mounting seat 404 is a block or a plate.

[0068] The first membrane-closing driving component 405 is an air cylinder, an oil cylinder or a motor. When the first membrane-closing driving component 405 is an air cylinder or an oil cylinder, the telescopic rod of the first membrane-closing driving component 405 is connected and fixed to the first mounting seat 403, and the telescopic rod of the first membrane-closing driving component 405 is extended and retracted to drive the first mounting seat 403 to move; when the first membrane-closing driving component 405 is a motor, it is also necessary to cooperate with the screw, the guide rail and the first mounting seat 403 to form a screw slide structure, and the first membrane-closing driving component 405 rotates to drive the first mounting seat 403 to move.

[0069] The second membrane-closing driving component 406 is an air cylinder, an oil cylinder or a motor. When the second membrane-closing driving component 406 is an air cylinder or an oil cylinder, the telescopic rod of the second membrane-closing driving component 406 is connected and fixed to the second mounting seat 404, and the telescopic rod of the second membrane-closing driving component 406 is telescopic to drive the second mounting seat 404 to move; when the second membrane-closing driving component 406 is a motor, it is also necessary to cooperate with the screw, the guide rail and the second mounting seat 404 to form a screw slide structure, and the second membrane-closing driving component 406 rotates to drive the second mounting seat 404 to move.

[0070] The third membrane-closing driving component 407 is an air cylinder, an oil cylinder or a motor. When the third membrane-closing driving component 407 is a air cylinder or an oil cylinder, the telescopic rod of the third membrane-closing driving component 407 is connected and fixed to the second membrane-closing component 402, and the telescopic rod of the third membrane-closing driving component 407 is extended and retracted to drive the second membrane-closing component 402 to move; when the third membrane-closing driving component 407 is a motor, it is also necessary to cooperate with the screw, the guide rail and the second membrane-closing component 402 to form a screw slide structure, and the rotation of the third membrane-closing driving component 407 drives the second membrane-closing component 402 to move.

[0071] In this way, the first film component 401 and the second film component 402 move toward each other. When the first film component 401 and the second film component 402 are closed, the first film material 20 and the second film material 30 are clamped between the first film component 401 and the second film component 402. The second film component 402 moves along the length direction of the transition section driven by the third film driving component 407, that is, the second film component 402 with a roller structure rolls back and forth along the length direction on the first film component 401 with a plate structure; when the second film component 402 with a roller structure rolls back and forth along the length direction on the first film component 401 with a plate structure, the first film component 401 with a plate structure remains stationary; the above structure enables the transition section to achieve a tighter fit.

[0072] In an embodiment of the present invention, the film closing mechanism 40 also includes a film closing track 408, which is arranged horizontally or vertically, and the first mounting seat 403 and the second mounting seat 404 are both slidingly connected to the film closing track 408; when the transition section is arranged vertically, the film closing track 408 is arranged horizontally; when the transition section is arranged horizontally, the film closing track 408 is arranged vertically.

[0073] In the embodiment of the present invention, the cutting mechanism includes a first cutter 501 , a second cutter 502 , a third cutter 503 and a fourth cutter 504 .

[0074] When the first film roll is an old film roll and the second film roll is a new film roll, the first cutter 501 is arranged between the transition section and the first film roll, and the first cutter 501 is used to cut off the end of the first film material 20. The transition section is arranged between the second cutter 502 and the second film roll, and the second cutter 502 is used to cut off the excess head end of the second film material 30, that is, the cutting mechanism 50 cuts the first film material 20 and the second film material 30 to complete the roll change; of course, in some application scenarios, only the first cutter 501 can be used to cut the end of the first film roll to complete the roll change.

[0075] When the first film roll is a new film roll and the second film roll is an old film roll, the third cutter 503 is set between the transition section and the second film roll, and the third cutter 503 is used to cut off the end of the second film material 20. The transition section is set between the fourth cutter 504 and the first film roll, and the fourth cutter 504 is used to cut off the excess head end of the first film material 30, that is, the cutting mechanism 50 cuts the first film material 20 and the second film material 30 to complete the roll change; of course, in some application scenarios, only the third cutter 503 can be used to cut the end of the second film roll to complete the roll change.

[0076] In an embodiment of the present invention, the automatic film changing device also includes a roll changing detection device 70, which includes a distance detector 701 and a magnetic powder controller 702; the first conveying unit also includes a first motor, which is used to drive the first unwinding roller 101 to rotate, and the second conveying unit also includes a second motor, which is used to drive the second unwinding roller 103 to rotate; the distance detector 701, the magnetic powder controller 702, the first motor and the second motor are electrically connected or connected through electrical signals.

[0077] Specifically, the distance detector 701 may adopt an existing distance detector 701 to implement distance detection; and the magnetic powder controller 702 may adopt an existing magnetic powder controller 702 to implement magnetic powder control.

[0078] In an embodiment of the present invention, the automatic film changing device also includes a negative pressure detection mechanism 80, which includes a negative pressure plate, a negative pressure driving member, and a negative pressure detection unit; the negative pressure driving member drives the negative pressure plate to rotate to fit the transition section, and the detection unit detects the negative pressure value of the transition section.

[0079] Specifically, the negative pressure detection unit may use an existing negative pressure detector to perform negative pressure detection.

[0080] In an embodiment of the present invention, the automatic film changing device also includes a correction mechanism 90, which includes a first correction detector 901 and a second correction detector 902; the first correction detector 901 is arranged close to the first conveying unit, and the first correction detector 901 is used to correct the first conveying unit; the second correction detector 902 is arranged close to the second conveying unit, and the second correction detector 902 is used to correct the second conveying unit.

[0081] Specifically, the first deflection correction detector 901 and the second deflection correction detector 902 can use existing deflection correction detectors to implement deflection correction detection.

[0082] The specific working process of this utility model is as follows:

[0083] When it is necessary to change the roll, the first pressing member 601 fixes the first film material 20, and the second pressing member 602 fixes the second film material 30; the first film-joining member 401 and the second film-joining member 402 move toward each other so that the bonding surface of the first film material 20 and the bonding surface of the second film material 30 are fitted together to form a transition section; the first film-joining member 401 and / or the second film-joining member 402 move along the length direction of the transition section to increase the degree of fitting of the transition section; the cutting mechanism 50 is used to cut the first film material 20 and / or the second film material 30; after each mechanism completes the action, it returns to the initial state.

[0084] The technical means disclosed in the present invention are not limited to those disclosed in the above-mentioned embodiments, but also include technical solutions composed of any combination of the above-mentioned technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and such improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. An automatic film changing device, characterized in that: include: A conveying mechanism, the conveying mechanism comprising a first conveying unit and a second conveying unit, the first conveying unit being used to convey the first film material, and the second conveying unit being used to convey the second film material; A film closing mechanism, the film closing mechanism comprising a first film closing member and a second film closing member, the first film closing member being arranged on the outer side of the first film material, the second film closing member being arranged on the outer side of the second film material, the first film closing member and the second film closing member moving toward each other so that the bonding surface of the first film material and the bonding surface of the second film material are bonded to form a transition section; The first film-joining member and / or the second film-joining member moves along the length direction of the transition section to increase the degree of fit of the transition section; A cutting mechanism is used to cut the first film material and / or the second film material.

2. The automatic film changing device according to claim 1, characterized in that: The first conveying unit includes a first unwinding roller and a plurality of first conveying rollers, the first film roll is sleeved on the first unwinding roller for unwinding the first film material, and the first conveying rollers are used to convey the first film material; The second conveying unit includes a second unwinding roller and a plurality of second conveying rollers. The second film roll is sleeved on the second unwinding roller for unwinding the second film material. The second conveying rollers are used to convey the second film material.

3. The automatic film changing device according to claim 2, characterized in that: Also included is a pressing mechanism, the pressing mechanism including a first pressing member, a second pressing member, a first pressing driving member, and a second pressing driving member; The first pressing members are provided on both sides of the first film material, and the two first pressing members are respectively driven by the corresponding first pressing driving members to move toward each other to fix the first film material, or the first pressing members and the first conveying roller are respectively provided on both sides of the first film material, and the first pressing members are driven by the corresponding first pressing driving members to move toward the corresponding first conveying roller to fix the first film material; The second pressing members are provided on both sides of the second film material, and the two second pressing members move toward each other under the drive of the corresponding second pressing driving members to fix the second film material, or the second pressing members and the second conveying roller are provided on both sides of the first film material, and the second pressing members move toward the corresponding second conveying roller under the drive of the corresponding second pressing driving member to fix the second film material.

4. The automatic film changing device according to claim 1, characterized in that: The first film-forming component is a plate-shaped structure, and the second film-forming component is a roller structure; Alternatively, the first film-forming component is a roller structure, and the second film-forming component is a plate structure; Alternatively, the first film-forming component is a plate-shaped structure, and the second film-forming component is a plate-shaped structure; Alternatively, the first film-forming component is a roller structure, and the second film-forming component is a roller structure.

5. The automatic film changing device according to claim 4, characterized in that: When the first film-forming component is a plate-shaped structure and the second film-forming component is a roller structure; The film closing mechanism further includes a first mounting seat, a second mounting seat, a first film closing driving member, a second film closing driving member and a third film closing driving member; The first film-closing member is arranged on the first mounting seat to form a first film-closing integrated structure, and the first film-closing driving member drives the first film-closing integrated structure to move; The second membrane-closing member and the third membrane-closing driving member are both arranged on the second mounting seat to form a second membrane-closing integrated structure. The second membrane-closing driving member drives the second membrane-closing integrated structure to move, and the third membrane-closing driving member drives the second membrane-closing member to move.

6. The automatic film-changing device according to claim 5, characterized in that: The film closing mechanism further includes a film closing track, which is arranged in a transverse direction or a longitudinal direction, and the first mounting seat and the second mounting seat are both slidably connected to the film closing track; When the transfer section is arranged along the longitudinal direction, the film-closing track is arranged along the transverse direction; When the transfer section is arranged along the transverse direction, the film closing track is arranged along the longitudinal direction.

7. The automatic film-changing device according to claim 1, characterized in that: The cutting mechanism includes a first cutter, a second cutter, a third cutter and a fourth cutter; The first cutter is used to cut off the end of the first film material, and the second cutter is used to cut off the head end of the second film material; Alternatively, the third cutter is used to cut off the head end of the first film material, and the fourth cutter is used to cut off the tail end of the second film material.

8. The automatic film-changing device according to claim 2, characterized in that: It also includes a roll-changing detection device, which includes a distance detector and a magnetic powder controller; The first conveying unit further includes a first motor, which is used to drive the first unwinding roller to rotate, and the second conveying unit further includes a second motor, which is used to drive the second unwinding roller to rotate; The roll-changing detection device, the magnetic powder controller, the first motor, and the second motor are electrically connected or connected via electrical signals.

9. The automatic film-changing device according to any one of claims 1 to 8, characterized in that: It also includes a negative pressure detection mechanism, which includes a negative pressure plate, a negative pressure driving member, and a negative pressure detection unit; The negative pressure driving member drives the negative pressure plate to rotate so as to fit the transition section, and the detection unit detects the negative pressure value of the transition section.

10. The automatic film changing device according to any one of claims 1 to 8, characterized in that: It also includes a deviation correction mechanism, which includes a first deviation correction detector and a second deviation correction detector; The first deflection correction detector is arranged close to the first conveying unit, and the first deflection correction detector is used to correct the deflection of the first conveying unit; The second deflection correction detector is disposed close to the second conveying unit, and is used to correct the deflection of the second conveying unit.

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