An automatic film roll changing device and its automatic roll changing method

Abstract

The application provides a film roll automatic changing device and an automatic changing method thereof, the device comprising an automatic changing support, a film placing mechanism and a changing mechanism; the changing mechanism comprising two changing units and a changing film cutting assembly; the changing unit comprising a changing translation assembly, a changing lifting assembly, a changing unit support, a changing film suction assembly and a changing adhesive assembly; the changing film suction assembly is used for suction of the double-layer film strip tail of the old film roll and the double-layer film strip head of the new film roll for splicing; the changing adhesive assemblies of the two changing units are used for pasting of two adhesive strips on two sides of the splicing position of the double-layer film strip tail of the old film roll and the double-layer film strip head of the new film roll respectively to connect the double-layer film strip head of the new film roll and the double-layer film strip tail of the old film roll; the changing film cutting assembly penetrates into and is horizontally movable in the changing film suction assembly for cutting of the double-layer film strip tail of the old film roll; the film roll automatic changing device of the application is used for automatic realization of the changing and lapping between the old film roll and the new film roll.

Description

Technical Field

[0001] This invention belongs to the technical field of battery pack film equipment, and particularly relates to an automatic film roll changing device and its automatic roll changing method. Background Technology

[0002] During the lithium battery production process, a coating device is used to coat the surface of the lithium battery to prevent it from being scratched.

[0003] During the wrapping process, insulating film is required. Generally, insulating film materials are manufactured in two forms: single sheets (insulating film sheets) and long strips of insulating film. The adhesive side of the insulating film is typically attached to a release film of the same size. Insulating film sheets are supplied in stacks, while insulating film strips are supplied as double-layer rolls. Insulating film sheets can be used after removing the release film before wrapping. Insulating film strips require the release film to be peeled off before wrapping and are cut into segments during the wrapping process. The end of the insulating film strip connects to the outer film-supporting mechanism of the insulating film roll, while the beginning of the insulating film strip is the other end of the segment. In this article, where there is no need to distinguish between insulating film sheets and insulating film strips, they are collectively referred to as insulating film. The material of insulating film (sheet) is polyethylene terephthalate (also known as PET). The thickness of insulating film is generally 0.08-0.15mm, and the thickness of insulating sheet is generally 0.15-0.5mm. It has excellent insulation, high temperature resistance, flame retardancy, heat dissipation and tensile rigidity. The adhesive is a polymer binder (one or more of polyvinylidene fluoride-hexafluoropropylene copolymer, polyvinylidene fluoride, polymethyl methacrylate, polyethylene oxide, polyacrylonitrile, polystyrene, polyvinyl acetate, polyvinylpyrrolidone, etc., with a thickness of 0.01-0.05mm). It can be accelerated to solidify when exposed to ultraviolet light (UV). It has excellent insulation, high temperature resistance, flame retardancy, heat dissipation and adhesion. The material of release film is polyethylene (also known as PE). Release film is generally 0.05-0.1mm thick.

[0004] Current coating equipment lacks automatic roll changing functionality. When a roll of insulating film is used up, the entire coating equipment needs to be stopped and restarted only after the insulating film is replaced. This results in a significant amount of time being spent changing the insulating film roll, failing to meet automation requirements and hindering the production efficiency of lithium batteries. Summary of the Invention

[0005] The purpose of this invention is to provide an automatic film roll changing device and method, which can automatically realize the changing and overlapping of old and new film rolls, thereby improving production efficiency.

[0006] The first aspect of this invention discloses an automatic film roll changing device, including an automatic film roll changing bracket, a film feeding mechanism, and a film changing mechanism; the film feeding mechanism includes two film roll expansion shafts, two unwinding frame film rollers, and a film changing frame film roller disposed on the automatic film roll changing bracket. The film roll expansion shafts, the unwinding frame film rollers, and the film changing frame film rollers are arranged horizontally in sequence on the automatic film roll changing bracket. The two unwinding frame film rollers are located above the two film roll expansion shafts and below the film changing frame film rollers. The two film roll expansion shafts are used to fix two film rolls respectively. The two unwinding frame film rollers are used to support the double-layer film strips pulled out from the two film roll expansion shafts respectively. The film changing frame film rollers are used to support the double-layer film strips that have been changed and overlapped on the unwinding frame film rollers.

[0007] The roll changing mechanism includes two roll changing units and one roll changing and film cutting assembly. The two roll changing units are located on the automatic roll changing bracket and below the roll changing frame film roller. Each roll changing unit includes a roll changing translation assembly, a roll changing lifting assembly, a roll changing unit bracket, a roll changing film suction assembly, and a roll changing adhesive assembly. The roll changing translation assembly is fixed to the automatic roll changing bracket. The roll changing lifting assembly is fixed to its output end. The roll changing unit bracket is fixed to its output end. Both the roll changing film suction assembly and the roll changing adhesive assembly are fixed to the roll changing unit bracket. The components and the roll-changing adhesive assembly are arranged sequentially from bottom to top. The roll-changing suction assembly is used to absorb the tail of the double-layer film tape of the old film roll and the head of the double-layer film tape of the new film roll for splicing. The roll-changing adhesive assemblies of the two roll-changing units are used to stick two tape segments to the splicing points of the tail of the double-layer film tape of the old film roll and the head of the double-layer film tape of the new film roll to connect the head of the double-layer film tape of the new film roll with the tail of the double-layer film tape of the old film roll. The roll-changing cutting assembly is fixed to the roll-changing unit bracket of one roll-changing unit. The roll-changing cutting assembly is inserted into and can move horizontally within the roll-changing suction assembly to cut the tail of the double-layer film tape of the old film roll.

[0008] Furthermore, the roll changing translation assembly includes a roll changing translation drive, a roll changing translation slide block, and a roll changing translation slide plate. The slide rails of the roll changing translation drive and the roll changing translation slide block are both fixed to the automatic roll changing bracket. The roll changing translation slide plate is fixed to the output end of the roll changing translation drive and the slider of the roll changing translation slide block. The roll changing lifting assembly is fixed to the roll changing translation slide plate.

[0009] Furthermore, the roll changing lifting assembly includes a roll changing lifting drive, a roll changing lifting slide block, and a roll changing lifting carriage. The slide rails of the roll changing lifting drive and the roll changing lifting slide block are both fixed to the output end of the roll changing translation assembly. The roll changing lifting carriage is fixed to the output end of the roll changing lifting drive and the slider of the roll changing lifting slide block. The roll changing unit bracket is fixed to the roll changing lifting carriage.

[0010] Furthermore, the roll-changing suction assembly includes a first roll-changing suction cup and a second roll-changing suction cup, which are arranged sequentially from bottom to top. The first roll-changing suction cup is used to adsorb the tail of the double-layer film tape of the old film roll, and the second roll-changing suction cup is used to adsorb the head of the double-layer film tape of the new film roll. The roll-changing cutting assembly is inserted into and can move horizontally between the first roll-changing suction cup and the second roll-changing suction cup to cut the tail of the double-layer film tape of the old film roll.

[0011] Furthermore, the roll-changing adhesive assembly includes an adhesive rotary drive support, an adhesive rotary drive, two adhesive shaft supports, an adhesive shaft, and an adhesive suction cup; the adhesive rotary drive support and the two adhesive shaft supports are all fixed on the roll-changing unit bracket, the adhesive rotary drive is fixed to the adhesive rotary drive support, the adhesive shaft is fixed to the output end of the adhesive rotary drive and rotatably mounted on the two adhesive shaft supports, and the adhesive suction cup is fixed to the outer periphery of the adhesive shaft for adsorbing adhesive tape segments.

[0012] Furthermore, the film changing and cutting assembly includes a film cutting drive, a film cutting slide block, a film cutting knife holder, and a film cutting knife. The slide rails of the film cutting drive and the film cutting slide block are both fixed to the film changing unit bracket. The film cutting knife holder is fixed to the output end of the film cutting drive and the slider of the film cutting slide block. The film cutting knife is fixed to the film cutting knife holder, and the film cutting knife extends out of the gap between the first film changing suction cup and the second film changing suction cup for cutting the old film roll.

[0013] Furthermore, the film feeding mechanism also includes a film feeding loop counter, which is fixed to the automatic roll changing bracket. The output end of the film feeding loop counter rolls onto the roll changing frame film roller, and the double-layer film strip is placed between the roll changing frame film roller and the film feeding loop counter. The film feeding loop counter includes a film feeding loop counter support, a film feeding loop counter sensor, and a film feeding loop counter roller. The film feeding loop counter support is fixed to the automatic roll changing bracket, the film feeding loop counter sensor is fixed to the film feeding loop counter support, the film feeding loop counter roller is fixed to the output end of the film feeding loop counter sensor, and the film feeding loop counter roller rolls onto the surface of the film strip on the roll changing frame film roller.

[0014] Furthermore, the automatic film roll changing device also includes a release film recycling mechanism, and the film feeding mechanism includes a peeling roller, a film feeding tensioning assembly, and multiple film output rollers; the peeling roller, the film feeding tensioning assembly, and the multiple film output rollers are arranged horizontally in sequence on the automatic roll changing bracket; the release film recycling mechanism includes a release film guide roller, a release film tensioning assembly, a release film infeed roller, and a release film winding assembly; the release film guide roller, the release film tensioning assembly, the release film infeed roller, and the release film winding assembly... The components are arranged horizontally in sequence on the automatic roll changing bracket, with the side of the release film guide roller that enters the film aligned with the side of the film peeling roller that exits the film. The release film winding assembly includes a release film winding drive, a release film winding roller, and a release film winding counter. The release film winding drive is fixed to the automatic roll changing bracket, and the release film winding roller is fixed to the output end of the release film winding drive. The release film winding counter is fixed to the automatic roll changing bracket and is perpendicular to the outer periphery of the release film winding roller.

[0015] A second aspect of the present invention also discloses an automatic film roll changing method, applied to the automatic film roll changing device described above, comprising:

[0016] Loading a new roll: Load a new roll into the empty roll expansion shaft, and pull out the double-layer film belt head of the new roll and attach it to the lower part of the roll changing suction assembly on the side corresponding to the new roll.

[0017] Suctioning old film: Drive any one or two roll changing lifting components and drive any one or two roll changing translation components simultaneously, so that the two roll changing suction components are raised and lowered to be aligned in height, and the roll changing suction component on the side corresponding to the old film roll drives the old film roll to translate and abut against the roll changing suction component on the side corresponding to the new film roll, and the upper part of the roll changing suction component on the side corresponding to the new film roll adsorbs the double-layer film strip of the old film roll;

[0018] Cutting old film: Using the film cutting assembly, the double-layer film strip of the old film roll is cut through the middle of the two film suction assemblies to form the tail of the double-layer film strip of the old film roll and the head of the double-layer film strip of the old film roll;

[0019] Adhesive: Drive any one or both of the roll-changing translation components simultaneously to disengage from the roll-changing suction component on the side corresponding to the old film roll, causing the double-layer film tape head of the old film roll to fall off. The double-layer film tape tail of the old film roll and the double-layer film tape head of the new film roll are spliced ​​onto the roll-changing suction component on the side corresponding to the new film roll, and the adhesive tape segment is adsorbed onto the roll-changing adhesive component on the side corresponding to the old film roll.

[0020] Drive any one or both of the roll changing lifting components and drive any one or both of the roll changing translation components simultaneously, so that the roll changing adhesive component on the side corresponding to the old film roll, with the adsorbed adhesive tape segment, is directly opposite the middle of the roll changing suction film component on the side corresponding to the new film roll, and the adhesive tape segment presses against the insulating film surface at the splice of the double-layer film tape tail of the old film roll and the double-layer film tape head of the new film roll;

[0021] Applying adhesive backing: Drive any one or both of the roll-changing translation components and drive any one or both of the roll-changing lifting components simultaneously, so that the roll-changing adhesive component on the side corresponding to the old film roll leaves the roll-changing suction component on the side corresponding to the new film roll, and the two roll-changing suction components are raised and lowered to be aligned in height.

[0022] Drive any one or both of the roll-changing translation components to make the two roll-changing suction components face each other and hold each other. The roll-changing suction component on the side corresponding to the new film roll stops suction, and at the same time, the roll-changing suction component on the side corresponding to the old film roll starts to suck up the tail of the double-layer film tape of the old film roll with adhesive and the head of the double-layer film tape of the new film roll.

[0023] Drive any one or both of the roll-changing translation components to disengage the two roll-changing suction components and adsorb the tape segment onto the roll-changing adhesive component on the side corresponding to the new film roll.

[0024] Drive any one or both of the roll changing lifting components and drive any one or both of the roll changing translation components simultaneously, so that the roll changing adhesive component on the side corresponding to the new film roll, with the adsorbed adhesive tape segment, is directly opposite the middle of the roll changing suction film component on the side corresponding to the old film roll, and the adhesive tape segment presses against the release film surface at the splicing point of the double-layer film tape tail of the old film roll and the double-layer film tape head of the new film roll.

[0025] Finally, drive any one or both of the roll-changing translation components simultaneously, so that the roll-changing adhesive component on the side corresponding to the new film roll leaves the roll-changing suction component on the side corresponding to the old film roll, and the roll-changing suction component on the side corresponding to the old film roll stops adsorbing the tail of the double-layer film tape of the old film roll with the face adhesive and back adhesive already applied and the head of the double-layer film tape of the new film roll.

[0026] The beneficial effects of this invention are as follows:

[0027] The automatic film roll changing device of this solution establishes a changing mechanism between the unwinding roller and the changing roller of the unwinding mechanism. Two changing units of the changing mechanism respectively absorb the double-layer film strip heads of the old film roll and the new film roll. A film cutting component is mounted on one changing unit and cuts the double-layer film strip of the old film roll to form a double-layer film strip tail. The double-layer film strip tails of the old film rolls on both changing units are then spliced ​​together with the double-layer film strip heads of the new film rolls. Finally, a film adhesive component attaches two adhesive tape segments to both sides of the splicing area between the double-layer film strip tails of the old film roll and the double-layer film strip heads of the new film roll, thus achieving film changing and overlapping between the old and new film rolls. This automatic film roll changing device can automatically change and overlap film rolls without manual operation, saving labor costs and improving production efficiency.

[0028] The automatic film roll changing method of the present invention cuts the insulating film tape through a complete process of "loading new roll - sucking up old film - cutting old film - applying face adhesive - applying back adhesive", so that the head of the new insulating film tape and the tail of the old insulating film tape are connected in sequence by applying face adhesive and applying back adhesive, thereby realizing the replacement of old film roll with new film roll. Attached Figure Description

[0029] Figure 1 A schematic diagram of an automatic film roll changing device;

[0030] Figure 2 This is a partial structural diagram of an automatic film roll changing device.

[0031] Figure 3 This is a schematic diagram of the roll changing mechanism;

[0032] Figure 4 This is a flowchart illustrating the automatic membrane roll changing method.

[0033] Explanation of reference numerals in the attached figures:

[0034] 30. Old membrane rolls; 40. New membrane rolls;

[0035] 210. Automatic roll changing stand;

[0036] 220. Film unwinding mechanism; 221. Film roll expansion shaft; 222. Unwinding frame film roller; 223. Roll changing frame film roller; 224. Film unwinding coil counter; 225. Film peeling roller; 226. Film unwinding tensioning assembly; 227. Film exit roller;

[0037] 230. Release film recycling mechanism; 231. Release film guide roller; 232. Release film tensioning assembly; 233. Release film feed roller; 234. Release film winding assembly;

[0038] 240. Roll changing mechanism; 2400. Roll changing unit; 246. Roll changing and film cutting assembly; 2461. Film cutting drive; 2462. Film cutting slide block; 2463. Film cutting knife holder; 2464. Film cutting knife;

[0039] 241. Roll changing translation assembly; 2411. Roll changing translation drive; 2412. Roll changing translation slide block; 2413. Roll changing translation slide plate; 242. Roll changing lifting assembly; 2421. Roll changing lifting drive; 2422. Roll changing lifting slide block; 2423. Roll changing lifting carriage; 243. Roll changing unit bracket; 244. Roll changing suction assembly; 2441. First roll changing suction cup; 2442. Second roll changing suction cup; 245. Roll changing adhesive assembly; 2451. Adhesive rotation drive support; 2452. Adhesive rotation drive; 2453. Adhesive shaft support; 2454. Adhesive shaft; 2455. Adhesive suction cup. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0041] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention 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, and therefore should not be construed as a limitation of the invention; the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; furthermore, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly, for example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the terms in this invention can be understood according to the specific circumstances.

[0042] See Figure 1-3An automatic film roll changing device of the present invention includes an automatic film roll changing bracket 210, a film feeding mechanism 220, and a film changing mechanism 240. The film feeding mechanism 220 includes two film roll expansion shafts 221, two unwinding frame film rollers 222, and a film changing frame film roller 223 disposed on the automatic film roll changing bracket 210. The film roll expansion shafts 221, the unwinding frame film rollers 222, and the film changing frame film roller 223 are arranged horizontally on the automatic film roll changing bracket 210 in sequence. The two unwinding frame film rollers 222 are located above the two film roll expansion shafts 221 and below the film changing frame film roller 223. The two film roll expansion shafts 221 are used to fix two film rolls respectively. The two unwinding frame film rollers 222 are used to support the double-layer film strips pulled out from the two film roll expansion shafts 221 respectively. The film changing frame film roller 223 is used to support the double-layer film strips that have been changed and overlapped on the unwinding frame film roller 222.

[0043] The roll changing mechanism 240 includes two roll changing units 2400 and one roll changing and film cutting assembly 246. The two roll changing units 2400 are disposed on the automatic roll changing bracket 210 and located below the roll changing frame film roller 223. Each roll changing unit 2400 includes a roll changing translation assembly 241, a roll changing lifting assembly 242, a roll changing unit bracket 243, a roll changing film suction assembly 244, and a roll changing adhesive assembly 245. The roll changing translation assembly 241 is fixed to the automatic roll changing bracket 210, the roll changing lifting assembly 242 is fixed to the output end of the roll changing translation assembly 241, the roll changing unit bracket 243 is fixed to the output end of the roll changing lifting assembly 242, and both the roll changing film suction assembly 244 and the roll changing adhesive assembly 245 are fixed to the roll changing unit bracket. 243, the film changing suction assembly 244 and the film changing adhesive assembly 245 are arranged sequentially from bottom to top. The film changing suction assembly 244 is used to absorb the tail of the double-layer film tape of the old film roll 30 and the head of the double-layer film tape of the new film roll 40 for splicing. The film changing adhesive assemblies 245 of the two film changing units 2400 are used to stick two tape segments to the two sides of the splicing point of the tail of the double-layer film tape of the old film roll 30 and the head of the double-layer film tape of the new film roll 40 to connect the head of the double-layer film tape of the new film roll 40 with the tail of the double-layer film tape of the old film roll 30. The film changing cutting assembly 246 is fixed to the film changing unit bracket 243 of one film changing unit 2400. The film changing cutting assembly 246 is inserted into and can move horizontally within the film changing suction assembly 244 for cutting the tail of the double-layer film tape of the old film roll 30.

[0044] The automatic film roll changing device of this scheme sets up a changing mechanism 240 between the unwinding frame film roller 222 and the changing frame film roller 223 of the film unwinding mechanism 220. The two changing units 2400 of the changing mechanism 240 respectively adsorb the double-layer film tape heads of the old film roll 30 and the new film roll 40. The changing film cutting assembly 246 is set on one changing unit 2400 and cuts the double-layer film tape of the old film roll 30 to form a double-layer film tape tail. The double-layer film tape tails of the old film roll 30 and the double-layer film tape heads of the new film roll 40 on the two changing units 2400 are spliced ​​together vertically. Finally, the changing adhesive assembly 245 respectively sticks two adhesive tape segments to the splicing points of the double-layer film tape tails of the old film roll 30 and the double-layer film tape heads of the new film roll 40, realizing the film changing and overlapping of the old film roll 30 and the new film roll 40. The automatic film roll changing device of the present invention can automatically change and overlap film rolls without manual operation, saving labor costs and improving production efficiency.

[0045] In this embodiment, the new film roll 40 is placed in advance on the film roll expansion shaft 221 that does not contain a film roll. The lead of the double-layer film tape of the new film roll 40 is pulled to the lower part of the film changing suction assembly 244 of the film changing unit 2400 on the side corresponding to the new film roll 40, and the lead of the double-layer film tape of the new film roll 40 is adsorbed by the lower part of the film changing suction assembly 244 of the film changing unit 2400 on the side corresponding to the new film roll 40.

[0046] In this embodiment, when the old film roll 30 is about to be used up:

[0047] (1) By driving the roll-changing translation component 241 of any one or both roll-changing units 2400 simultaneously, the corresponding roll-changing lifting component 242 is driven to move with the corresponding roll-changing suction component 244, so that the two roll-changing suction components 244 approach each other and are horizontally aligned and closed, so that the head of the double-layer film strip of the new film roll 40 and the double-layer film strip of the old film roll 30 are both sandwiched between the two roll-changing suction components 244; then the roll-changing cutting component 246 passes through the middle of the two roll-changing suction components 244 to cut the double-layer film strip of the old film roll 30.

[0048] (2) Then, by driving the roll-changing translation component 241 of either or both roll-changing units 2400 simultaneously, the two roll-changing suction components 244 are moved away from each other. At this time, the upper part of the roll-changing translation component 241 on the side corresponding to the new roll 40 adsorbs the tail of the double-layer film belt of the old roll 30 (the back of this double-layer film belt is placed on the roll-changing frame film roller 223), and the lower part holds the head of the double-layer film belt of the new roll 40 adsorbed. The upper and lower parts of the roll-changing translation component 241 on the side corresponding to the old roll 30 do not adsorb the double-layer film belt. As a result, the head of the double-layer film belt of the old roll 30 (the front of this double-layer film belt is placed on the roll expansion shaft 221) falls off due to gravity.

[0049] (3) At the same time, by driving the rewind lifting assembly 242 on any one or both rewind units 2400, a strip of adhesive tape on the rewind adhesive assembly 245 of the rewind unit 2400 on the side corresponding to the old film roll 30 is directly facing the splicing point of the double-layer film tape tail of the old film roll 30 and the double-layer film tape head of the new film roll 40.

[0050] (4) Then, by driving the roll-changing translation component 241 of either or both roll-changing units 2400 simultaneously, the two roll-changing suction components 244 are brought closer to each other, so that a strip of adhesive tape on the roll-changing adhesive component 245 of the roll-changing unit 2400 on the side corresponding to the old film roll 30 is pasted on the side where the double-layer film tape tail of the old film roll 30 and the double-layer film tape head of the new film roll 40 are joined.

[0051] (5) Drive the roll-changing translation component 241 of the two roll-changing units 2400 again, or drive them simultaneously, so that the two roll-changing suction components 244 move away from each other. Then drive the roll-changing lifting component 242 of the two roll-changing units 2400, or drive them simultaneously, so that the two roll-changing suction components 244 are horizontally facing each other. Then bring the two roll-changing suction components 244 closer to each other and horizontally facing each other to close together, so that the upper part of the roll-changing suction component 244 on the side corresponding to the old film roll 30 adsorbs the tail of the double-layer film tape of the old film roll 30, and the lower part adsorbs the head of the double-layer film tape of the new film roll 40. The upper and lower parts of the roll-changing unit 2400 on the side corresponding to the new film roll 40 do not adsorb the double-layer film tape.

[0052] (6) Then, by driving the rewind lifting assembly 242 on either or both rewind units 2400 simultaneously, a strip of adhesive tape on the rewind adhesive assembly 245 of the rewind unit 2400 on the side corresponding to the new film roll 40 is aligned with the splicing point of the double-layer film tape tail of the old film roll 30 and the double-layer film tape head of the new film roll 40.

[0053] (7) Finally, by driving any one or both of the roll-changing translation components 241 of the roll-changing units 2400, the two roll-changing suction components 244 are brought closer to each other, so that a strip of adhesive tape on the roll-changing adhesive component 245 of the roll-changing unit 2400 corresponding to the new film roll 40 is pasted on the other side of the splice between the tail of the double-layer film tape and the head of the double-layer film tape of the new film roll 40; thereby completing the automatic roll-changing of the new film roll 40. Finally, by driving any one or both of the roll-changing translation components 241 of the roll-changing units 2400, the roll-changing suction components 244 of the two roll-changing units 2400 are moved away from each other to ensure the normal unwinding of the film roll.

[0054] In this embodiment, the roll changing translation assembly 241 includes a roll changing translation drive 2411, a roll changing translation slide block 2412, and a roll changing translation slide plate 2413. The slide rails of the roll changing translation drive 2411 and the roll changing translation slide block 2412 are both fixed to the automatic roll changing bracket 210. The roll changing translation slide plate 2413 is fixed to the output end of the roll changing translation drive 2411 and the slider of the roll changing translation slide block 2412. The roll changing lifting assembly 242 is fixed to the roll changing translation slide plate 2413.

[0055] In this embodiment, the roll changing lifting assembly 242 includes a roll changing lifting drive 2421, a roll changing lifting slide 2422, and a roll changing lifting carriage 2423. The slide rails of the roll changing lifting drive 2421 and the roll changing lifting slide 2422 are both fixed to the output end of the roll changing translation assembly 241. The roll changing lifting carriage 2423 is fixed to the output end of the roll changing lifting drive 2421 and the slider of the roll changing lifting slide 2422. The roll changing unit bracket 243 is fixed to the roll changing lifting carriage 2423.

[0056] In this embodiment, the roll-changing suction assembly 244 includes a first roll-changing suction cup 2441 and a second roll-changing suction cup 2442. The second roll-changing suction cup 2442, the first roll-changing suction cup 2441, and the roll-changing adhesive assembly 245 are arranged sequentially from bottom to top. The first roll-changing suction cup 2441 is used to adsorb the tail of the double-layer film tape of the old film roll 30, and the second roll-changing suction cup 2442 is used to adsorb the head of the double-layer film tape of the new film roll 40. The roll-changing cutting assembly 246 is inserted into and can move horizontally between the first roll-changing suction cup 2441 and the second roll-changing suction cup 2442 to cut the tail of the double-layer film tape of the old film roll 30. It can be understood that the first roll-changing suction cup 2441 and the second roll-changing suction cup 2442 have the same structure, and the distance between them is basically only enough to allow the cutting blade 2464 of the roll-changing cutting assembly 246 to pass through.

[0057] When the film cutting knife 2464 is cutting, the second roll-changing suction cup 2442 that adsorbs the old film roll 30 stops working, causing the double-layer film tape head of the old film roll 30 to fall off due to gravity, leaving only the tail of the insulating film tape of the old film roll 30 and the head of the insulating film tape of the new film roll 40. Moreover, the first roll-changing suction cup 2441 of the roll-changing suction assembly 244 on the side corresponding to the new film roll 40 adsorbs the tail of the insulating film tape of the old film roll 30, and its second roll-changing suction cup 2442 adsorbs the head of the insulating film tape of the new film roll 40.

[0058] In this embodiment, the roll-changing adhesive assembly 245 includes an adhesive rotary drive support 2451, an adhesive rotary drive 2452, two adhesive shaft supports 2453, an adhesive shaft 2454, and an adhesive suction cup 2455. The adhesive rotary drive support 2451 and the two adhesive shaft supports 2453 are all fixed on the roll-changing unit bracket 243. The adhesive rotary drive 2452 is fixed to the adhesive rotary drive support 2451. The adhesive shaft 2454 is fixed to the output end of the adhesive rotary drive 2452 and can be rotatably mounted on the two adhesive shaft supports 2453. The adhesive suction cup 2455 is fixed to the outer periphery of the adhesive shaft 2454 for adsorbing adhesive tape segments.

[0059] After the film cutting operation is completed, the first and second roll-changing suction cups 2441 and 2442 of one roll-changing suction assembly 244 on the side corresponding to the new film roll 40 start adsorbing the tail of the double-layer film tape of the old film roll 30 and the head of the double-layer film tape of the new film roll 40. The first and second roll-changing suction cups 2441 and 2442 of the other roll-changing suction assembly 244 stop adsorbing (ensuring that the head of the double-layer film tape of the old film roll 30 can fall off). The roll-changing translation component 241 of the roll-changing suction assembly 244 on the side corresponding to the old film roll 30 is driven away from the other roll-changing suction assembly 244, so that the adhesive suction cup 2455 has sufficient rotation space. The adhesive drive component drives the adhesive suction cup 2455 to rotate, so that the surface of the adhesive suction cup 2455 adsorbing the tape segment rotates to be horizontal towards the splicing point of the old film roll 30 and the new film roll 40. At this time, the roll-changing lifting component 242 of the roll-changing suction assembly 244 on the side corresponding to the old film roll 30 is driven to descend, so that the adhesive suction cup 2455 descends to the splicing position of the old film roll 30 and the new film roll 40. It drives any one or both roll-changing translation components 241 to stick the tape segment to one surface of the splicing position of the old film roll 30 and the new film roll 40. Then, the roll-changing lifting component 242 is driven to rise to the initial position so that the two roll-changing suction assemblies 244 return to facing each other and closing. Finally, the roll-changing suction assembly 244 on the side corresponding to the old film roll 30 starts to adsorb the tail of the double-layer film tape of the old film roll 30 and the head of the double-layer film tape of the new film roll 40. The roll-changing suction assembly 244 on the side corresponding to the new film roll 40 repeats the above adhesive operation after the roll-changing to stick another tape segment to the other surface of the splicing position of the old film roll 30 and the new film roll 40.

[0060] In this embodiment, the roll-changing and film-cutting assembly 246 includes a film-cutting drive 2461, a film-cutting slide block 2462, a film-cutting knife holder 2463, and a film-cutting knife 2464. The slide rails of the film-cutting drive 2461 and the film-cutting slide block 2462 are both fixed to the roll-changing unit bracket 243. The film-cutting knife holder 2463 is fixed to the output end of the film-cutting drive 2461 and the slider of the film-cutting slide block 2462. The film-cutting knife 2464 is fixed to the film-cutting knife holder 2463, and the film-cutting knife 2464 extends out of the gap between the first roll-changing suction cup 2441 and the second roll-changing suction cup 2442 for cutting the old film roll 30.

[0061] In this embodiment, the film feeding mechanism 220 further includes a film feeding loop counter 224, which is fixed to the automatic roll changing bracket 210. The output end of the film feeding loop counter 224 is rolled onto the roll changing frame film roller 223, and the double-layer film strip is placed between the roll changing frame film roller 223 and the film feeding loop counter 224. The film feeding loop counter 224 includes a film feeding loop counter support (not shown in the figure), a film feeding loop counter sensor (not shown in the figure), and a film feeding loop counter roller (not shown in the figure). The film feeding loop counter support is fixed to the automatic roll changing bracket 210, the film feeding loop counter sensor is fixed to the film feeding loop counter support, the film feeding loop counter roller is fixed to the input end of the film feeding loop counter sensor, and the film feeding loop counter roller is rolled onto the surface of the film strip on the roll changing frame film roller 223. The film unloading count sensor is used to count the number of rotations of the double-layer film belt placed on the film roll 223 along with the film unloading count roller and calculate the length of the film roll being unloaded. When the length of the film roll being unloaded reaches a preset length, the time for automatic roll changing is determined.

[0062] In this embodiment, the automatic film roll changing device further includes a release film recycling mechanism 230, and the film feeding mechanism 220 further includes a peeling roller 225, a film feeding tensioning assembly 226, and multiple film output rollers 227; the peeling roller 225, the film feeding tensioning assembly 226, and the multiple film output rollers 227 are arranged horizontally on the automatic roll changing bracket 210 in sequence; the release film recycling mechanism 230 includes a release film guide roller 231, a release film tensioning assembly 232, a release film infeed roller 233, and a release film winding assembly 234; the release film guide roller 231, the release film tensioning assembly 232, the release film feeding roller 233, and the release film winding assembly 234 are all included in the automatic roll changing device. The film feed roller 233 and the release film winding assembly 234 are arranged horizontally on the automatic roll changer 210. The side of the release film guide roller 231 that feeds into the film is connected to the side of the film peeling roller 225 that exits from the film. The release film winding assembly 234 includes a release film winding drive, a release film winding roller, and a release film winding counter. The release film winding drive is fixed on the automatic roll changer 210, and the release film winding roller is fixed to the output end of the release film winding drive. The release film winding counter is fixed on the automatic roll changer 210 and is perpendicular to the outer periphery of the release film winding roller. The release film winding counter is used to emit electromagnetic wave signals toward the release film being wound onto the release film winding roller. The release film winding counter is a radar device. When the release film winding counter receives an echo signal, it can determine the unloading time of the release film roll from the release film winding roller. The release film winding counter has a short sensing distance. When it can detect the release film, it means that the release film roll is about to be unloaded.

[0063] See further Figure 4 The present invention also provides an automatic film roll changing method, applied to the automatic film roll changing device described above, comprising:

[0064] S1. Loading a new roll: Load a new roll 40 into the empty roll expansion shaft 221, and pull out the double-layer film tape head of the new roll 40 and attach it to the lower part of the roll changing suction assembly 244 on the side corresponding to the new roll 40.

[0065] Suctioning old film: Drive any one or both roll changing lifting components 242 and drive any one or both roll changing translation components 241 to raise and lower the two roll changing suction components 244 to align their heights. The roll changing suction component 244 on the side corresponding to the old film roll 30 drives the old film roll 30 to translate and abut against the roll changing suction component 244 on the side corresponding to the new film roll 40. The upper part of the roll changing suction component 244 on the side corresponding to the new film roll 40 adsorbs the double-layer film strip of the old film roll 30.

[0066] S2, Cutting the old film: Using the film cutting assembly 246, cut the double-layer film strip of the old film roll 30 through the middle of the two film suction assemblies 244 to form the tail of the double-layer film strip of the old film roll 30 and the head of the double-layer film strip of the old film roll 30.

[0067] S3, Adhesive: Drive any one or both roll-changing translation components 241 simultaneously to disengage the roll-changing suction component 244 on the side corresponding to the old film roll 30, causing the double-layer film tape head of the old film roll 30 to fall off. The double-layer film tape tail of the old film roll 30 and the double-layer film tape head of the new film roll 40 are spliced ​​onto the roll-changing suction component 244 on the side corresponding to the new film roll 40, and the tape segment is adsorbed onto the roll-changing adhesive component 245 on the side corresponding to the old film roll 30.

[0068] S4. Drive any one or both roll changing lifting components 242 and drive any one or both roll changing translation components 241 simultaneously, so that the roll changing adhesive component 245 on the side corresponding to the old film roll 30, with the adsorbed adhesive tape segment, is directly opposite the middle of the roll changing suction film component 244 on the side corresponding to the new film roll 40, and the adhesive tape segment presses against the insulating film surface at the splicing point of the double-layer film tape tail of the old film roll 30 and the double-layer film tape head of the new film roll 40.

[0069] S5, Applying adhesive backing: Drive any one or both roll-changing translation components 241 and drive any one or both roll-changing lifting components 242 simultaneously, so that the roll-changing adhesive component 245 on the side corresponding to the old film roll 30 leaves the roll-changing suction component 244 on the side corresponding to the new film roll 40, and the two roll-changing suction components 244 are raised and lowered to be aligned in height.

[0070] Drive any one or both roll-changing translation components 241 to make the two roll-changing suction components 244 face each other and hold each other. The roll-changing suction component 244 on the side corresponding to the new film roll 40 stops suction, and at the same time, the roll-changing suction component 244 on the side corresponding to the old film roll 30 starts to suck up the tail of the double-layer film tape of the old film roll 30 with the adhesive already applied and the head of the double-layer film tape of the new film roll 40.

[0071] Drive any one or both roll-changing translation components 241 simultaneously to disengage the two roll-changing film suction components 244 and adsorb the tape segment onto the roll-changing adhesive component 245 on the side corresponding to the new film roll 40.

[0072] Drive any one or both roll changing lifting components 242 and drive any one or both roll changing translation components 241 simultaneously, so that the roll changing adhesive component 245 on the side corresponding to the new film roll 40, with the adsorbed adhesive tape segment, is directly opposite the middle of the roll changing suction film component 244 on the side corresponding to the old film roll 30, and the adhesive tape segment presses against the release film surface at the splicing point of the double-layer film tape tail of the old film roll 30 and the double-layer film tape head of the new film roll 40.

[0073] Finally, drive any one or both roll-changing translation components 241 simultaneously, so that the roll-changing adhesive component 245 on the side corresponding to the new film roll 40 separates from the roll-changing suction component 244 on the side corresponding to the old film roll 30. The roll-changing suction component 244 on the side corresponding to the old film roll 30 stops adsorbing the tail of the double-layer film tape of the old film roll 30 with the front and back adhesive already applied and the head of the double-layer film tape of the new film roll 40, thereby completing the roll changing.

[0074] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A film roll automatic roll changing device characterized by comprising: The application relates to an automatic film roll changing support, a film roll placing mechanism and a film roll changing mechanism. The film roll placing mechanism comprises two film roll expanding shafts, two film roll unwinding frame rollers and a film roll changing frame roller, the film roll expanding shafts, the film roll unwinding frame rollers and the film roll changing frame roller are arranged in sequence on the automatic film roll changing support, the two film roll unwinding frame rollers are arranged above the two film roll expanding shafts and below the film roll changing frame roller, the two film roll expanding shafts are respectively used for fixing two film rolls, the two film roll unwinding frame rollers are respectively used for supporting the double-layer film belts drawn out from the two film roll expanding shafts, and the film roll changing frame roller is used for supporting the double-layer film belts unwound from the film roll unwinding frame rollers and the double-layer film belts overlapped and spliced. The film roll changing mechanism comprises two film roll changing units and a film roll cutting assembly, the two film roll changing units are arranged on the automatic film roll changing support and below the film roll changing frame roller, the film roll changing unit comprises a film roll changing translation assembly, a film roll changing lifting assembly, a film roll changing unit support, a film roll changing suction assembly and a film roll changing adhesive assembly, the film roll changing translation assembly is fixed to the automatic film roll changing support, the film roll changing lifting assembly is fixed to the output end of the film roll changing translation assembly, the film roll changing unit support is fixed to the output end of the film roll changing lifting assembly, the film roll changing suction assembly and the film roll changing adhesive assembly are fixed to the film roll changing unit support, the film roll changing suction assembly and the film roll changing adhesive assembly are arranged in sequence from bottom to top, the film roll changing suction assembly is used for sucking the double-layer film belt tail of the old film roll and the double-layer film belt head of the new film roll for splicing, the film roll changing adhesive assembly of the two film roll changing units is used for respectively sticking two adhesive tape segments on two sides of the splicing position of the double-layer film belt tail of the old film roll and the double-layer film belt head of the new film roll to connect the double-layer film belt head of the new film roll and the double-layer film belt tail of the old film roll, and the film roll cutting assembly is fixed to the film roll changing unit support of one film roll changing unit and can horizontally move in the film roll changing suction assembly for cutting the double-layer film belt tail of the old film roll. The film roll changing suction assembly comprises a first film roll changing suction disc and a second film roll changing suction disc, the second film roll changing suction disc, the first film roll changing suction disc and the film roll changing adhesive assembly are arranged in sequence from bottom to top, the first film roll changing suction disc is used for sucking the double-layer film belt tail of the old film roll, and the second film roll changing suction disc is used for sucking the double-layer film belt head of the new film roll. The film roll changing adhesive assembly comprises an adhesive rotating driving part support, an adhesive rotating driving part, two adhesive rotating shaft supports, an adhesive rotating shaft and an adhesive suction disc, the adhesive rotating driving part support and the two adhesive rotating shaft supports are fixed to the film roll changing unit support, the adhesive rotating driving part is fixed to the adhesive rotating driving part support, the adhesive rotating shaft is fixed to the output end of the adhesive rotating driving part and can be rotatably arranged on the two adhesive rotating shaft supports, and the adhesive suction disc is fixed to the outer periphery of the adhesive rotating shaft for sucking the adhesive tape segment. ​ 2. The film roll automatic changing device according to claim 1, characterized by The roll changing translation assembly comprises a roll changing translation drive, a roll changing translation slide group and a roll changing translation slide plate. The roll changing translation drive and slide rails of the roll changing translation slide group are fixed to the automatic roll changing support. The roll changing translation slide plate is fixed to the output end of the roll changing translation drive and the slide block of the roll changing translation slide group. The roll changing lifting assembly is fixed to the roll changing translation slide plate.

3. The film roll automatic changing device according to claim 1, characterized by The roll changing lifting assembly comprises a roll changing lifting drive, a roll changing lifting slide group and a roll changing lifting slide carriage. The roll changing lifting drive and slide rails of the roll changing lifting slide group are fixed to the output end of the roll changing translation assembly. The roll changing lifting slide carriage is fixed to the output end of the roll changing lifting drive and the slide block of the roll changing lifting slide group. The roll changing unit support is fixed to the roll changing lifting slide carriage.

4. The film roll automatic changing device according to claim 1, characterized by The roll changing film cutting assembly comprises a film cutting drive, a film cutting slide group, a film cutting knife holder and a film cutting knife. The film cutting drive and slide rails of the film cutting slide group are fixed to the roll changing unit support. The film cutting knife holder is fixed to the output end of the film cutting drive and the slide block of the film cutting slide group. The film cutting knife is fixed to the film cutting knife holder and extends out of the gap between the first roll changing suction disc and the second roll changing suction disc for cutting the old film roll.

5. The film roll automatic changing device according to claim 1, characterized by The film releasing mechanism further comprises a film releasing counting device. The film releasing counting device is fixed to the automatic roll changing support. The output end of the film releasing counting device is rolled on the film roll of the roll changing support. The film releasing counting device comprises a film releasing counting support, a film releasing counting sensor and a film releasing counting roller. The film releasing counting support is fixed to the automatic roll changing support. The film releasing counting sensor is fixed to the film releasing counting support. The film releasing counting roller is fixed to the input end of the film releasing counting sensor and is rolled on the surface of the film roll of the roll changing support.

6. The film roll automatic changing device according to claim 1, wherein The film roll automatic roll changing device further comprises a release film recycling mechanism. The film releasing mechanism further comprises a film stripping roller, a film releasing tensioning assembly and a plurality of film output rollers. The film stripping roller, the film releasing tensioning assembly and the plurality of film output rollers are arranged on the automatic roll changing support in sequence. The release film recycling mechanism comprises a release film guide roller, a release film tensioning assembly, a release film input roller and a release film winding assembly. The release film guide roller, the release film tensioning assembly, the release film input roller and the release film winding assembly are arranged on the automatic roll changing support in sequence. The film input side of the release film guide roller is connected to the film output side of the film stripping roller. The release film winding assembly comprises a release film winding drive, a release film winding roller and a release film winding counting device. The release film winding drive is fixed to the automatic roll changing support. The release film winding roller is fixed to the output end of the release film winding drive. The release film winding counting device is fixed to the automatic roll changing support and vertically faces the outer periphery of the release film winding roller.

7. A film roll automatic changing method characterized by comprising: The film roll automatic roll changing device is applied to the film roll automatic roll changing device of any one of claims 1-6. New roll loading: load a new roll of film into the empty film roll expansion shaft, and pull out and adsorb the double-layer film belt head of the new roll of film on the lower part of the roll changing film suction assembly corresponding to the new roll of film; Old film suction: drive any one or both roll changing lifting assemblies and drive any one or both roll changing translation assemblies to make the two roll changing film suction assemblies align in height, and the roll changing film suction assembly corresponding to the side of the old roll of film drives the old roll of film to translate and abut against the roll changing film suction assembly corresponding to the side of the new roll of film, and the upper part of the roll changing film suction assembly corresponding to the side of the new roll of film adsorbs the double-layer film belt of the old roll of film; Old film cutting: use the roll changing film cutting assembly to cut the double-layer film belt of the old roll of film through the middle part of the two roll changing film suction assemblies to form the double-layer film belt tail of the old roll of film and the double-layer film belt head of the old roll of film; Face adhesive: drive any one or both roll changing translation assemblies to separate the roll changing film suction assembly corresponding to the side of the old roll of film, so that the double-layer film belt head of the old roll of film falls off, and the double-layer film belt tail of the old roll of film is spliced with the double-layer film belt head of the new roll of film on the roll changing film suction assembly corresponding to the side of the new roll of film, and the adhesive tape segment is adsorbed on the roll changing adhesive assembly corresponding to the side of the old roll of film; Drive any one or both roll changing lifting assemblies and drive any one or both roll changing translation assemblies to make the roll changing adhesive assembly corresponding to the side of the old roll of film with the adsorbed adhesive tape segment directly face the middle part of the roll changing film suction assembly corresponding to the side of the new roll of film, and the adhesive tape segment presses the release film surface of the splicing part of the double-layer film belt tail of the old roll of film and the double-layer film belt head of the new roll of film; Back adhesive: drive any one or both roll changing translation assemblies and drive any one or both roll changing lifting assemblies to make the roll changing adhesive assembly corresponding to the side of the old roll of film away from the roll changing film suction assembly corresponding to the side of the new roll of film, and the two roll changing film suction assemblies align in height; Drive any one or both roll changing translation assemblies to make the two roll changing film suction assemblies directly abut against each other, and the roll changing film suction assembly corresponding to the side of the new roll of film stops adsorbing, and at the same time, the roll changing film suction assembly corresponding to the side of the old roll of film adsorbs the double-layer film belt tail of the old roll of film with the face adhesive and the double-layer film belt head of the new roll of film; Drive any one or both roll changing translation assemblies to separate the two roll changing film suction assemblies, and adsorb the adhesive tape segment on the roll changing adhesive assembly corresponding to the side of the new roll of film; Drive any one or both roll changing lifting assemblies and drive any one or both roll changing translation assemblies to make the roll changing adhesive assembly corresponding to the side of the new roll of film with the adsorbed adhesive tape segment directly face the middle part of the roll changing film suction assembly corresponding to the side of the old roll of film, and the adhesive tape segment presses the release film surface of the splicing part of the double-layer film belt tail of the old roll of film and the double-layer film belt head of the new roll of film; Finally, drive any one or simultaneously drive two said roll changing translation assemblies, so that the roll changing adhesive assembly corresponding to the side of the new film roll is away from the roll changing film suction assembly corresponding to the side of the old film roll, and the roll changing film suction assembly corresponding to the side of the old film roll stops suctioning the double-layer film tape tail of the old film roll with the face adhesive and back adhesive and the double-layer film tape head of the new film roll.

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