Adhesive film feeding mechanism and adhesive film pasting device

Abstract

The utility model provides an adhesive film feeding mechanism and an adhesive film pasting device. The adhesive film pasting device comprises a discharging mechanism, a punching mechanism, a cutting mechanism, a pushing mechanism and a feeding table. The discharging mechanism is configured to discharge a working adhesive film, the punching mechanism, the pushing mechanism, the cutting mechanism and the feeding table are arranged side by side, the cutting mechanism is close to the feeding table, the punching mechanism and the pushing mechanism are arranged between the discharging mechanism and the cutting mechanism, and the pushing mechanism is configured to push the working adhesive film. The working adhesive film sequentially passes through the punching mechanism and the cutting mechanism and then enters the feeding table; the punching mechanism is configured to punch the working adhesive film so as to form through holes distributed in the length direction of the working adhesive film in the working adhesive film; the cutting mechanism is configured to cut off the working adhesive film after the working adhesive film with the preset length enters the feeding table so as to obtain an adhesive film sheet with a through hole. According to the adhesive film feeding mechanism, punching and cutting operation on the adhesive film is continuously completed, so that the equipment cost is reduced, and the production efficiency is improved.

Description

Technical Field

[0001] The present application relates to the field of photovoltaic cell production equipment, specifically a film feeding mechanism and a film laminating device. Background Art

[0002] Photovoltaic modules are typically constructed by stacking, laminating, and encapsulating a glass panel, a first film layer, a cell string, a second film layer, and a backsheet. The cell string is formed by layout and busbar welding of the cell strings. The cell string has busbar leads, which pass through the second film layer and lead holes in the backsheet before being welded to a junction box. To prevent adhesive shortages at the backsheet lead holes during lamination, a film adhesive sheet is installed at the busbar lead locations of the cell string before stacking the second film layer and backsheet on the cell string. The film adhesive sheet melts during lamination to replenish the adhesive missing from the backsheet lead holes. The film adhesive sheet is provided with through-holes for the busbar leads to extend through.

[0003] Existing film feeders only automatically cut the film to a predetermined length, which then requires transferring the film to a punching machine for punching. With existing film feed systems, film cutting and punching are performed by two separate machines, increasing equipment costs and reducing production efficiency. Utility Model Content

[0004] In order to solve the above technical problems, the present application provides a film feeding mechanism and a film laminating device, which adopt the following technical solutions:

[0005] A film feeding mechanism, comprising a feeding mechanism, a punching mechanism, a cutting mechanism, a pushing mechanism and a feeding table;

[0006] The unloading mechanism is configured to release the working film, the punching mechanism, the pushing mechanism, the cutting mechanism and the feeding table are arranged side by side, the cutting mechanism is close to the feeding table, the punching mechanism and the pushing mechanism are arranged between the unloading mechanism and the cutting mechanism, and the pushing mechanism is configured to push the working film so that the working film passes through the punching mechanism and the cutting mechanism in sequence and then enters the feeding table;

[0007] The punching mechanism is configured to punch holes in the working film to form through holes arranged along the length direction of the working film on the working film;

[0008] The cutting mechanism is configured to cut the working film after a predetermined length of the working film enters the feeding table to obtain a film sheet with through holes.

[0009] The film feeding mechanism provided in the present application is pushed by the pushing mechanism, and the film released by the discharging mechanism passes through the punching mechanism and the cutting mechanism in sequence and finally reaches the feeding table. During this process, the punching mechanism punches the film, and the cutting mechanism automatically cuts off the punched film, so that the subsequent film-taking mechanism can directly pick up the film sheet with through holes from the feeding table.

[0010] The film feeding mechanism of the present application continuously completes the punching and cutting operations on the film, thereby reducing equipment costs and improving production efficiency.

[0011] In some embodiments, the unwinding mechanism includes a first mounting roller, a second mounting roller and a splicing mechanism, wherein: the first mounting roller is configured to mount the first material roll, and release the first film when the first material roll rotates; the second mounting roller is configured to mount the second material roll, and release the second film when the second material roll rotates; the working film is the first film or the second film, if the working film is the first film, the second film is the spare film; if the working film is the second film, the first film is the spare film; the head end of the working film passes through the splicing mechanism and then enters the punching mechanism; the head end of the spare film is fixed by the splicing mechanism; the splicing mechanism is also configured to fix the tail end of the working film when the unwinding of the working film is completed, and to splice the head end of the spare film with the tail end of the working film.

[0012] By installing two film rolls, one roll is feeding the working film while the other roll serves as a backup roll. If the working film roll is no longer able to discharge, meaning the working film is exhausted, the end of the backup roll can be spliced ​​online to the end of the working film. This allows for rapid online film roll replacement and prevents interruptions in the film feed mechanism, which could affect operating time.

[0013] In some embodiments, the splicing mechanism includes a first splicing portion and a second splicing portion, wherein the second splicing portion is located above the first splicing portion, and a splicing gap is provided between the first splicing portion and the second splicing portion for the working film to pass through; when the working film is the first film, the second splicing portion fixes the head end of the second film, and the first splicing portion is configured to fix the tail end of the first film when the first film is unrolled, and the first splicing portion and the second splicing portion are also configured to move relatively close to each other so as to splice the tail end of the first film with the head end of the second film together; when the working film is the second film, the first splicing portion fixes the head end of the first film, and the second splicing portion is configured to fix the tail end of the second film when the second film is unrolled, and the first splicing portion and the second splicing portion are also configured to move relatively close to each other so as to splice the head end of the first film with the tail end of the second film together.

[0014] Through the cooperation of the first connecting part and the second connecting part, the connecting mechanism realizes the automatic connection of the tail end of the working film and the head end of the spare film, thereby completing the online rapid replacement of the film roll.

[0015] In some embodiments, the first connecting portion includes a first adsorption plate, which is configured to adsorb the head end or tail end of the first adhesive film; the second connecting portion includes a second driving member and a second adsorption plate, the second adsorption plate is connected to the driving end of the second driving member, the second adsorption plate is configured to adsorb the head end or tail end of the second adhesive film, and the second driving member is configured to drive the second adsorption plate to rise and fall; when the second adsorption plate rises to a high position, a connecting gap is formed between the second adsorption plate and the first adsorption plate; when the second adsorption plate descends to a low position, the second adsorption plate is configured to press the head end of the adsorbed second adhesive film onto the tail end of the first adhesive film located on the first adsorption plate, or to press the tail end of the adsorbed second adhesive film onto the head end of the first adhesive film located on the first adsorption plate.

[0016] By configuring the first and second connecting parts as relatively movable suction plates, both can securely hold the trailing end of the active film or the leading end of the backup film by suction. The suction plates increase the area of ​​pressure applied to the trailing end of the active film and the leading end of the backup film, improving the splicing effect.

[0017] In some embodiments, the first connecting portion also includes a first driving member, and the first adsorption plate is connected to the driving end of the first driving member, and the first driving member is configured to drive the first adsorption plate to rise and fall; when the working film is the first film, the first adsorption plate descends to a low position to avoid the first film; when the first film is unrolled or the working film is the second film, the first adsorption plate rises to a high position to adsorb the tail end of the first film or the head end of the first film.

[0018] When the working film is the first film, the first adsorption plate can be driven by the first driving member to descend to a low position to avoid the first film, thereby preventing obstruction to the transportation of the first film.

[0019] In some embodiments, the adsorption surface of the first adsorption plate and / or the second adsorption plate is configured to perform back-flushing on the first adhesive film and the second adhesive film that have been spliced.

[0020] Ensure that when the first adsorption plate and the second adsorption plate are separated from each other, the connecting section of the first adhesive tape and the second adhesive tape can be smoothly separated from the first adsorption plate and the second adsorption plate.

[0021] In some embodiments, a heating element is provided on the second adsorption plate or the first adsorption plate; when the second adsorption plate presses the head end of the second film onto the tail end of the first film, the heating element heats the head end of the second film and the tail end of the first film so that the head end of the second film is adhered to the tail end of the first film; when the second adsorption plate presses the tail end of the second film onto the head end of the first film, the heating element heats the tail end of the second film and the head end of the first film so that the tail end of the second film is adhered to the head end of the first film.

[0022] By arranging a heating element on the second adsorption plate or the first adsorption plate, when the first adsorption plate and the second adsorption plate press the tail end of the working adhesive film and the head end of the spare adhesive film, the heating element can heat the tail end of the working adhesive film and the head end of the spare adhesive film, so that the tail end of the working adhesive film and the head end of the spare adhesive film are bonded together after being heated.

[0023] In some embodiments, the second connecting portion further includes a welding assembly; the welding assembly is disposed above the second adsorption plate, and the second adsorption plate is provided with an avoidance channel for the welding assembly to pass through, or the welding assembly is disposed below the first adsorption plate, and the first adsorption plate is provided with an avoidance channel for the welding assembly to pass through. When the second adsorption plate presses the head end of the second adhesive film against the tail end of the first adhesive film, the welding assembly is configured to pass downward through the avoidance channel on the second adsorption plate or upward through the avoidance channel on the first adsorption plate, and heat the head end of the second adhesive film and the tail end of the first adhesive film so that the head end of the second adhesive film is bonded to the tail end of the first adhesive film; when the second adsorption plate presses the tail end of the second adhesive film against the head end of the first adhesive film, the welding assembly is configured to pass downward through the avoidance channel on the second adsorption plate or upward through the avoidance channel on the first adsorption plate, and heat the tail end of the second adhesive film and the head end of the first adhesive film so that the tail end of the second adhesive film is bonded to the head end of the first adhesive film.

[0024] By setting up a welding component and setting up an avoidance channel on the second adsorption plate or the first adsorption plate, when the first adsorption plate and the second adsorption plate press the tail end of the working film and the head end of the spare film, the welding component passes through the avoidance channel to heat the tail end of the working film and the head end of the spare film, so that the tail end of the working film and the head end of the spare film are bonded together after being heated.

[0025] In some embodiments, the film feeding mechanism also includes a tensioning wheel, which is arranged between the splicing mechanism and the punching mechanism and is located below the splicing mechanism and the punching mechanism; the working film passing through the splicing mechanism passes downward around the tensioning wheel and then passes into the punching mechanism, and the tensioning wheel is configured to move up and down under the traction of the working film to tension the working film.

[0026] By setting the tensioning wheel, the working film is tensioned, ensuring that the working film is smoothly transported backward under the push of the pushing mechanism.

[0027] In some embodiments, a sensor is provided on the tensioning wheel. When the first or second material roll is unwound, the tensioning wheel drops to the lowest position under its own gravity, the sensor is triggered to generate a connection signal, and the sensor is electrically connected to the pushing mechanism.

[0028] When the working film is exhausted, the pushing mechanism can suspend the conveying of the working film, and the connecting mechanism can smoothly connect the tail end of the working film with the head end of the spare film.

[0029] In some embodiments, the punching mechanism includes a supporting plate and a punch, wherein a punch is provided on the supporting plate and the punch is provided directly above the punch; the working film passes between the punch and the supporting plate, and the punch is configured to punch downward into the punch to punch a through hole in the working film.

[0030] A punching mechanism with a simple structure is provided, which can quickly punch through holes on a working adhesive film passing between the punch and a supporting plate through the cooperation of a punch and a punching hole.

[0031] In some embodiments, the cutting mechanism includes an upper cutter and a lower cutter arranged in a pair, and the working film passes between the upper cutter and the lower cutter. The upper cutter and the lower cutter are configured to move relative to each other to cut the working film.

[0032] A cutting mechanism with a simple structure is provided, which can cut the working film passing through the space between the upper cutter and the lower cutter through the cooperation of the upper cutter and the lower cutter.

[0033] In some embodiments, there are two feeding tables, and the film feeding mechanism further includes a rotating drive unit, and the two feeding tables are relatively connected to the movable part of the rotating drive unit, and the rotating drive unit is configured to drive the two feeding tables to rotate, so that the two feeding tables rotate alternately to a receiving station close to the cutting mechanism and a feeding station away from the cutting mechanism; the working film is pushed to the feeding table located at the receiving station by the pushing mechanism; the film sheet is taken away from the feeding table located at the feeding station; or, there is one feeding table, and the film feeding mechanism further includes a translation drive unit, and the feeding table is connected to the movable part of the translation drive unit, and the translation drive unit is configured to drive the feeding table to translate toward and away from the cutting mechanism, so that the feeding table switches between the receiving station close to the cutting mechanism and the feeding station away from the cutting mechanism; the working film is pushed to the feeding table located at the receiving station by the pushing mechanism; the film sheet is taken away from the feeding table located at the feeding station.

[0034] By providing two feeding tables and connecting them relative to each other on the movable component of the rotary drive unit, when one feeding table is located at the receiving station and cooperates with the cutting mechanism to cut the working film and obtain film sheets, the other feeding table is located at the feeding station, allowing the film removal mechanism to pick up the previously cut film sheet from the feeding table. This can speed up the feeding of film sheets and prevent interference between the film removal mechanism and the cutting mechanism. By connecting the feeding tables to the movable component of the translational drive unit, the feeding tables can be switched between the receiving station near the cutting mechanism and the feeding station far away from the cutting mechanism. The working film is pushed to the feeding table at the receiving station by the pushing mechanism, and the cut film sheet is removed from the feeding table at the feeding station by the film removal mechanism, preventing interference between the film removal mechanism and the cutting mechanism.

[0035] In some embodiments, the film feeding mechanism further includes a support member, which is located in front of and close to the cutting mechanism, and is used to support the new free end of the working film after the cutting mechanism cuts the working film.

[0036] By providing a support member in front of the cutting mechanism, the support member supports the newly cut free end of the working film after the cutting mechanism cuts it, preventing it from sagging. This ensures that as the pushing mechanism continues to push the working film, the working film can smoothly pass through the cutting mechanism and onto the feed table, preventing the free end of the working film from being stuck in the cutting mechanism or the feed table.

[0037] The present application also provides a film-applying device, which includes the film feeding mechanism and film-taking mechanism described in any one of the above items, wherein: the film-taking mechanism is configured to suck up the film sheet from the feeding table of the film feeding mechanism, and install the sucked film sheet onto the busbar lead of the battery string group, and the busbar lead passes through the through hole of the film sheet.

[0038] It can be seen that through the cooperation of the film feeding mechanism and the film taking mechanism, the film applying device in the embodiment of the present application automatically installs the film sheet onto the busbar lead of the battery string group, thereby improving the efficiency of film sheet installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 Schematic diagram of the structure of the film feeding mechanism in the embodiment of the present application;

[0040] Figure 2 Schematic diagram of the structure of the adhesive film device in the embodiment of the present application;

[0041] Figures 1 to 2 Included are:

[0042] Film feeding mechanism 3:

[0043] Unloading mechanism 31: first mounting roller 311, second mounting roller 312, connecting mechanism 313, first connecting portion 3131, second connecting portion 3132, first driving member 3133, first adsorption plate 3134, second driving member 3135, second adsorption plate 3136, welding assembly 3137;

[0044] Punching mechanism 32: supporting plate 321, punch 322;

[0045] Cutting mechanism 33: upper cutter 331, lower cutter 332;

[0046] Pushing mechanism 34: upper pressing wheel 341, lower pressing wheel 342;

[0047] Feeding table 35;

[0048] Support member 36;

[0049] Tensioning wheel 37;

[0050] Rotation drive module 38;

[0051] Film removal mechanism 5: adsorption component 51, mounting plate 52;

[0052] A first material roll 600 , a first adhesive film 601 , a second material roll 700 , and a second adhesive film 701 . DETAILED DESCRIPTION

[0053] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the present application is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0054] As described in the background section, existing film feed mechanisms can only automatically cut film into sheets of predetermined lengths, which then need to be transferred to a punching machine for punching. This existing film feed method requires separate equipment for film cutting and punching, increasing equipment costs and reducing production efficiency.

[0055] To this end, the present application provides a film feeding mechanism that can continuously complete the punching and cutting operations on the film, thereby reducing equipment costs and improving production efficiency.

[0056] like Figure 1 As shown, the film feeding mechanism 3 in the embodiment of the present application includes a feeding mechanism 31 , a punching mechanism 32 , a cutting mechanism 33 , a pushing mechanism 34 and a feeding table 35 .

[0057] The discharge mechanism 31 is configured to discharge the working film, the punching mechanism 32, the pushing mechanism 34, the cutting mechanism 33 and the feeding table 35 are arranged side by side, the cutting mechanism 33 is close to the feeding table 35, the punching mechanism 32 and the pushing mechanism 34 are arranged between the discharge mechanism 31 and the cutting mechanism 33, and the pushing mechanism 34 is configured to push the working film so that the working film passes through the punching mechanism 32 and the cutting mechanism 33 in sequence and then enters the feeding table 35.

[0058] The punching mechanism 32 is configured to punch holes in the working film to form through holes arranged along the length direction of the working film.

[0059] The cutting mechanism 33 is configured to cut the working film after a predetermined length of the working film enters the feeding table 35 to obtain a film sheet with through holes.

[0060] It can be seen that the film feeding mechanism provided in the embodiment of the present application, under the push of the pushing mechanism 34, the film released from the discharge mechanism 31 passes through the punching mechanism 32 and the cutting mechanism 33 in sequence and finally reaches the feeding table 35. During this process, the punching mechanism 32 punches the film, and the cutting mechanism 33 automatically cuts off the punched film, so that the subsequent film-taking mechanism can directly pick up the film sheet with through holes from the feeding table 35.

[0061] The film feeding mechanism of the embodiment of the present application continuously completes the punching and cutting operations on the film, thereby reducing equipment costs and improving production efficiency.

[0062] Optionally, the unwinding mechanism 31 includes a first mounting roller 311, a second mounting roller 312, and a splicing mechanism 313. The first mounting roller 311 is configured to mount a first material roll 600, which unwinds a first adhesive film 601 when the first material roll 600 rotates. The second mounting roller 312 is configured to mount a second material roll 700, which unwinds a second adhesive film 701 when the second material roll 700 rotates.

[0063] The working film is either the first film 601 or the second film 701. If the working film is the first film 601, the second film 701 serves as the backup film. If the working film is the second film 701, the first film 601 serves as the backup film. The leading end of the working film passes through the splicing mechanism 313 and then into the punching mechanism 32. The leading end of the backup film is secured by the splicing mechanism 313. The splicing mechanism 313 is also configured to secure the trailing end of the working film upon completion of unwinding, and to splice the leading end of the backup film to the trailing end of the working film.

[0064] For example, Figure 1In the illustrated state, the first film 601 is the working film, and the second film 701 is the standby film. The leading end of the first film 601 passes through the splicing mechanism 313 and into the punching mechanism 32, while the leading end of the second film 701 is secured by the splicing mechanism 313. When the first roll 600 is completely free of the first film 601, the trailing end of the first film 601 disengages from the first mounting roller 311 and, driven by the pushing mechanism 34, passes into the splicing mechanism 313. The splicing mechanism 313 secures the trailing end of the first film 601 and splices the leading end of the second film 701, previously secured thereto, to the trailing end of the first film 601.

[0065] As can be seen, by providing two mounting rollers for mounting film rolls, while the film roll on one mounting roller is feeding the working film, the film roll on the other mounting roller serves as a standby roll for providing backup film. When the film roll providing the working film can no longer discharge, indicating that the working film is exhausted, the end of the backup film provided by the standby roll can be connected online to the end of the working film, thereby completing the online rapid replacement of the film rolls and preventing the film feeding mechanism 3 from interrupting the feeding process and affecting the working cycle.

[0066] Optionally, the connecting mechanism 313 includes a first connecting portion 3131 and a second connecting portion 3132 , wherein the second connecting portion 3132 is located above the first connecting portion 3131 , and a connecting gap for the working film to pass through is provided between the first connecting portion 3131 and the second connecting portion 3132 .

[0067] like Figure 1 As shown, when the working film is the first film 601, the second connecting portion 3132 fixes the leading end of the second film 701, and the first connecting portion 3131 is configured to fix the trailing end of the first film 601 when the first film 601 is unwound. The first connecting portion 3131 and the second connecting portion 3132 are also configured to move relative to each other to connect the trailing end of the first film 601 to the leading end of the second film 701.

[0068] Similarly, when the working film is the second film 701, the first connecting portion 3131 fixes the leading end of the first film 601, and the second connecting portion 3132 is configured to fix the trailing end of the second film 701 when the unwinding of the second film 701 is completed. The first connecting portion 3131 and the second connecting portion 3132 are also configured to move relative to each other to connect the leading end of the first film 601 and the trailing end of the second film 701 together.

[0069] It can be seen that, through the cooperation of the first connecting portion 3131 and the second connecting portion 3132 , the connecting mechanism 313 realizes the automatic connection of the tail end of the working film and the head end of the spare film, thereby completing the online rapid replacement of the film roll.

[0070] Continue to refer Figure 1 As shown, optionally, the first connecting portion 3131 includes a first adsorption plate 3134, which is configured to adsorb the leading end or the trailing end of the first adhesive film 601. The second connecting portion 3132 includes a second driving member 3135 and a second adsorption plate 3136, wherein the second adsorption plate 3136 is connected to the driving end of the second driving member 3135, and is configured to adsorb the leading end or the trailing end of the second adhesive film 701. The second driving member 3135 is configured to drive the second adsorption plate to rise and fall.

[0071] When the second adsorption plate 3136 is driven by the second driving member 3135 to rise to a high position, a connection gap is formed between the second adsorption plate 3136 and the first adsorption plate 3134 .

[0072] When the second adsorption plate 3136 is driven by the second driving member 3135 to descend to a low position, the second adsorption plate 3136 is configured to press the head end of the adsorbed second adhesive film 701 onto the tail end of the first adhesive film 601 located on the first adsorption plate 3134, or to press the tail end of the adsorbed second adhesive film 701 onto the head end of the first adhesive film 601 located on the first adsorption plate 3134.

[0073] Still taking the first adhesive film 601 as the working adhesive film and the second adhesive film 701 as the spare adhesive film as an example, the optional working process of the first connecting portion 3131 and the second connecting portion 3132 is as follows:

[0074] The second driving member 3135 drives the second adsorption plate 3136 to a high position, so that a connection gap is formed between the second adsorption plate 3136 and the first adsorption plate 3134 .

[0075] The leading end of the second adhesive film 701 is fixed to the second adhesive plate 3136. When the first roll 600 is completely free of the first adhesive film 601, the trailing end of the first adhesive film 601 enters the gap between the second adhesive plate 3136 and the first adhesive plate 3134 and is attracted to the first adhesive plate 3134. Simultaneously, the pushing mechanism 34 stops pushing the first adhesive film 601.

[0076] Subsequently, the second driving member 3135 drives the second adsorption plate 3136 to descend to a lower position. The second adsorption plate 3136 presses the leading end of the second adhesive film 701 adsorbed and fixed thereon against the trailing end of the first adhesive film 601 on the first adsorption plate 3134, thereby connecting the leading end of the second adhesive film 701 to the trailing end of the first adhesive film 601.

[0077] After the leading end of the second film 701 is spliced ​​to the trailing end of the first film 601, the second driving member 3135 drives the second suction plate 3136 back to its upper position, re-forming a splicing gap between the second suction plate 3136 and the first suction plate 3134. The pushing mechanism 34 resumes its pushing motion, and the second roll 700, driven by the pushing mechanism 34, unwinds the second film 701, becoming the working film.

[0078] At this time, a new first material roll 600 can be installed on the first installation roller 311, and the head end of the first film 601 on the first material roll 600 can be pulled and adsorbed and fixed on the first adsorption plate 3134, that is, the first film 601 is switched to a spare film.

[0079] Optionally, the adsorption surfaces of the first adsorption plate 3134 and / or the second adsorption plate 3135 are configured to back-flush the joined first and second adhesive films 601, 701. This allows the joined sections of the first and second adhesive films 601, 701 to be smoothly separated from the first and second adsorption plates 3134, 3135 when the first and second adsorption plates 3134, 3135 are separated.

[0080] In order to make the adsorption surface of the first adsorption plate 3134 and / or the second adsorption plate 3135 have adsorption and back-blowing capabilities, optionally, the adsorption surface of the first adsorption plate 3134 and / or the second adsorption plate 3135 is provided with adsorption holes connected to the vacuum component. When the vacuum component evacuates the adsorption holes, the adsorption holes generate adsorption force, and when the vacuum component blows air into the adsorption holes, the adsorption holes generate back-blowing force.

[0081] Optionally, in order to prevent adhesion to the adhesive film, an anti-sticking layer is provided on the adsorption surface of the first adsorption plate 3134 and the second adsorption plate 3136 .

[0082] Optionally, the first connecting portion 3131 further includes a first driving member 3133 , and the first adsorption plate 3134 is connected to a driving end of the first driving member 3133 . The first driving member 3133 is configured to drive the first adsorption plate 3134 to rise and fall.

[0083] When the working film is the first film 601 , the first adsorption plate 3134 descends to a low position to avoid the first film 601 , thereby preventing the conveyance of the first film 601 from being obstructed.

[0084] When the first film 601, serving as the working film, is unwound and the trailing end of the first film 601 enters the splicing gap, the first suction plate 3134, driven by the first driving member 3133, rises to a high position to secure the trailing end of the first film 601. Furthermore, when the second film 701 is the working film, the first suction plate 3134 also remains in a high position to secure the leading end of the first film 601, serving as the backup film.

[0085] Optionally, a heating element is provided on the first adsorption plate 3134 or the second adsorption plate 3136. The heating element is, for example, a heating rod inserted into the first adsorption plate 3134 or the second adsorption plate 3136.

[0086] When the second adsorption plate 3136 presses the leading end of the second adhesive film 701 against the trailing end of the first adhesive film 601, the heating element heats the leading end of the second adhesive film 701 and the trailing end of the first adhesive film 601, thereby causing the leading end of the second adhesive film 701 and the trailing end of the first adhesive film 601 to adhere together after being heated.

[0087] Similarly, when the second adsorption plate 3136 presses the tail end of the second adhesive film 701 against the head end of the first adhesive film 601, the heating element heats the tail end of the second adhesive film 701 and the head end of the first adhesive film 601, so that the tail end of the second adhesive film 701 and the head end of the first adhesive film 601 are bonded together after being heated.

[0088] Of course, additional heating components can also be provided to implement heating and splicing of the adhesive film, such as Figure 1 As shown, optionally, the connecting mechanism 313 further includes a welding component 3137 , which is disposed above the second adsorption plate 3136 , and an avoidance channel for the welding component 3137 to pass through is provided on the second adsorption plate 3136 .

[0089] When the second adsorption plate 3136 presses the head end of the second adhesive film 701 against the tail end of the first adhesive film 601, the welding assembly 3137 is configured to pass downward through the avoidance channel and heat the head end of the second adhesive film 701 and the tail end of the first adhesive film 601, so that the head end of the second adhesive film 701 and the tail end of the first adhesive film 601 are bonded together after being heated.

[0090] Similarly, when the second adsorption plate 3136 presses the tail end of the second adhesive film 701 against the head end of the first adhesive film 601, the welding assembly 3137 is configured to pass downward through the avoidance channel and heat the tail end of the second adhesive film 701 and the head end of the first adhesive film 601, so that the tail end of the second adhesive film 701 and the head end of the first adhesive film 601 are bonded together after being heated.

[0091] Of course, the welding assembly 3137 may also be disposed below the first adsorption plate 3134 . In this case, an avoidance channel is provided on the first adsorption plate 3134 for the welding assembly 3137 to pass through.

[0092] The welding assembly 3137, for example, includes a third driving member and a heating block. The heating block is connected to the driving end of the third driving member. The third driving member is used to drive the heating block to rise and fall, so that the heating block passes downward through the avoidance channel on the second adsorption plate 3136 or upward through the avoidance channel on the first adsorption plate 3134 to heat the head end of the second adhesive film 701 and the tail end of the first adhesive film 601, or heat the tail end of the second adhesive film 701 and the head end of the first adhesive film 601.

[0093] Continue to refer Figure 1 As shown, the film feeding mechanism 3 optionally further includes a tensioning wheel 37, which is disposed between the splicing mechanism 313 and the punching mechanism 32 and is located below the splicing mechanism 313 and the punching mechanism 32. The working film passing through the splicing mechanism 313 passes downward around the tensioning wheel 37 and then enters the punching mechanism 32.

[0094] The tensioning wheel 37 is configured to move up and down under the pull of the working film to tension it. For example, the tensioning wheel 37 is mounted within a vertically extending waist hole. If the working film is released too quickly and becomes slack, the tensioning wheel 37 slides downward along the waist hole under its own weight, thereby tensioning the working film and ensuring smooth rearward conveyance. If the working film is released too slowly, the film pulls upward against the tensioning wheel 37, causing it to slide upward along the waist hole, maintaining proper tension on the working film and preventing it from stretching or breaking.

[0095] Optionally, a sensor is provided on the tensioning wheel 37 and is electrically connected to the pushing mechanism 34. When the first roll 600 or the second roll 700 of the working film is unwound, the tensioning wheel 37 loses its pull on the working film and drops to its lowest position (e.g., to the bottom of the waist hole) under its own gravity, triggering the sensor to generate a splice signal. Upon receiving the splice signal from the sensor, the pushing mechanism 34 stops pushing the working film, ensuring that the splice mechanism 313 can successfully splice the trailing end of the working film to the leading end of the backup film.

[0096] like Figure 1As shown, the punching mechanism 32 optionally includes a support plate 321 and a punch 322. The support plate 321 is provided with a punch hole, and the punch 322 is positioned directly above the punch hole. The working film, pushed by the pushing mechanism 34, passes between the punch 322 and the support plate 321. The punch 322 is configured to plunge downward into the punch hole to punch a through hole in the working film. The punch 322 can, for example, be driven up and down by a pneumatic cylinder to punch the working film.

[0097] Optionally, the cutting mechanism 33 includes an upper cutter 331 and a lower cutter 332 arranged in pairs, and the working film passes between the upper cutter 331 and the lower cutter 332 under the push of the pushing mechanism 34. The upper cutter and the lower cutter are configured to be able to move relative to each other to cut the working film.

[0098] Alternatively, one of the upper cutter 331 and the lower cutter 332 may be fixed, while the other is configured to be movable up and down to cut the working film. Alternatively, both the upper cutter 331 and the lower cutter 332 may be configured to be movable up and down, with the upper cutter 331 descending while the lower cutter 332 ascends to cut the working film.

[0099] Optionally, a pushing mechanism 34 is disposed between the punching mechanism 32 and the cutting mechanism 33 and includes an upper pressing wheel 341 and a lower pressing wheel 342 arranged in a pair. The working film passes between the upper pressing wheel 341 and the lower pressing wheel 342. The upper pressing wheel 341 and the lower pressing wheel 342 are configured to rotate in opposite directions to push the working film backward. For example, the upper pressing wheel 341 rotates counterclockwise when driven by a first motor, and the lower pressing wheel 342 rotates clockwise when driven by a second motor, thereby pushing the working film backward.

[0100] like Figure 1 As shown, optionally, the film feeding mechanism 3 in the embodiment of the present application further includes a support member 36, which is located in front of the cutting mechanism 33 and close to the cutting mechanism 33. The support member 36 is used to support the new free end of the working film after the cutting mechanism 33 cuts off the working film.

[0101] By providing a support member 36 on the front side of the cutting mechanism 33, once the cutting mechanism 33 cuts the working film, the support member 36 supports the newly cut free end of the working film, preventing it from sagging. This ensures that as the pushing mechanism 34 continues to push the working film backward, the free end of the working film can smoothly pass through the cutting mechanism 33 and ultimately enter the feeding table 35 without being stuck by the cutting mechanism 33 or the feeding table 35.

[0102] The support member 36 can be a support plate with a horizontal bearing surface at the top. The bearing surface of the support member 36 is at the same height as the bearing surface of the feeding table 35 , or the bearing surface of the support member 36 is slightly higher than the bearing surface of the feeding table 35 .

[0103] like Figure 1 As shown, optionally, two feeding tables 35 are provided. The film feeding mechanism 3 further includes a rotary drive unit 38. The two feeding tables 35 are relatively connected to the movable component of the rotary drive unit 38. The rotary drive unit 38 is configured to drive the two feeding tables 35 to rotate so that the two feeding tables 35 alternately rotate to a receiving station close to the cutting mechanism 33 and a feeding station away from the cutting mechanism 33. The working film is pushed by the pushing mechanism 33 to the feeding table 35 at the receiving station. The film sheet is removed from the feeding table 35 at the feeding station.

[0104] That is, while one feeding table 35 is located at the receiving station, cooperating with the cutting mechanism 33 to cut the working film and obtain film sheets, the other feeding table 35 is located at the feeding station. This can speed up the feeding of film sheets and avoid interference between the film removal mechanism and the cutting mechanism.

[0105] In another alternative embodiment, only one feeding table 35 is provided. The film feeding mechanism 3 further includes a translation drive unit. The feeding table 35 is connected to a movable component of the translation drive unit. The translation drive unit is configured to drive the feeding table 35 to translate toward and away from the second cutting mechanism 33, so that the feeding table 35 switches between a receiving station near the second cutting mechanism 33 and a feeding station away from the second cutting mechanism 33. The working film is pushed by the pushing mechanism 33 onto the feeding table 35 at the receiving station. The film sheet is removed from the feeding table 35 at the feeding station.

[0106] Based on the same application concept, this application also provides a film-adhering device. Figure 2 As shown, the film-adhering device in the embodiment of the present application includes the film feeding mechanism 3 and the film taking mechanism 5 provided in any of the above embodiments, wherein: the film taking mechanism 5 is configured to suck the film sheet from the feeding table 35 of the film feeding mechanism 3, and install the sucked film sheet on the bus bar lead of the battery string group, and the bus bar lead passes through the through hole of the film sheet.

[0107] It can be seen that, through the cooperation of the film feeding mechanism 3 and the film taking mechanism 5, the film applying device in the embodiment of the present application automatically installs the film sheet onto the busbar lead of the battery string group, thereby improving the efficiency of film sheet installation.

[0108] Optionally, the film removal mechanism 5 includes a moving mechanism, a mounting plate 52 and an adsorption component 51, wherein the mounting plate 52 is connected to the movable part of the moving mechanism, and the adsorption component 51 is connected to the mounting plate 52. The moving mechanism drives the adsorption component 51 to move between the film feeding mechanism 3 and the battery string group, so that the adsorption component 51 absorbs the film sheet from the feeding table 35 of the film feeding mechanism 3 and installs the absorbed film sheet on the bus bar lead of the battery string group.

[0109] The above description of the present application is sufficiently detailed and has certain particularities. Those skilled in the art should understand that the descriptions in the embodiments are merely exemplary, and that all changes made without departing from the true spirit and scope of the present application should fall within the scope of protection of the present application. The scope of protection claimed in the present application is defined by the claims, not by the above description in the embodiments. Furthermore, the embodiments mentioned in the present application are not limited to being implemented individually, and some embodiments can also be implemented in combination.

Claims

1. A film feeding mechanism, characterized in that: The film feeding mechanism includes a feeding mechanism, a punching mechanism, a cutting mechanism, a pushing mechanism and a feeding table; The unloading mechanism is configured to release the working film, the punching mechanism, the pushing mechanism, the cutting mechanism and the feeding table are arranged side by side, the cutting mechanism is close to the feeding table, the punching mechanism and the pushing mechanism are arranged between the unloading mechanism and the cutting mechanism, and the pushing mechanism is configured to push the working film so that the working film passes through the punching mechanism and the cutting mechanism in sequence and then enters the feeding table; The punching mechanism is configured to punch holes in the working film to form through holes on the working film that are arranged along the length direction of the working film; The cutting mechanism is configured to cut the working film after the working film of a predetermined length enters the feeding table to obtain a film sheet with through holes.

2. The film feeding mechanism according to claim 1, characterized in that: The unloading mechanism includes a first mounting roller, a second mounting roller and a connecting mechanism, wherein: The first mounting roller is configured to mount a first material roll, and the first material roll releases a first adhesive film when rotating; The second mounting roller is configured to mount a second material roll, and the second material roll releases a second adhesive film when rotating; The working adhesive film is the first adhesive film or the second adhesive film. If the working adhesive film is the first adhesive film, the second adhesive film is a standby adhesive film; if the working adhesive film is the second adhesive film, the first adhesive film is a standby adhesive film. The head end of the working film passes through the connecting mechanism and then enters into the punching mechanism; The head end of the spare adhesive film is fixed by the connecting mechanism; The splicing mechanism is further configured to fix the tail end of the working film when the unwinding of the working film is completed, and to splice the head end of the standby film with the tail end of the working film.

3. The film feeding mechanism according to claim 2, characterized in that: The connecting mechanism includes a first connecting portion and a second connecting portion, wherein the second connecting portion is located above the first connecting portion, and a connecting gap is provided between the first connecting portion and the second connecting portion for the working adhesive film to pass through; When the working film is the first film, the second connecting portion fixes the leading end of the second film, and the first connecting portion is configured to fix the trailing end of the first film when the first film is unwound. The first connecting portion and the second connecting portion are further configured to move relative to each other to connect the trailing end of the first film to the leading end of the second film. When the working film is the second film, the first connecting portion fixes the leading end of the first film, and the second connecting portion is configured to fix the trailing end of the second film when the unwinding of the second film is completed. The first connecting portion and the second connecting portion are also configured to move relative to each other to connect the leading end of the first film and the trailing end of the second film together.

4. The film feeding mechanism according to claim 3, wherein: The first connecting portion includes a first adsorption plate, and the first adsorption plate is configured to adsorb the leading end or the trailing end of the first adhesive film; The second connecting portion includes a second driving member and a second adsorption plate, the second adsorption plate is connected to the driving end of the second driving member, the second adsorption plate is configured to adsorb the leading end or the trailing end of the second adhesive film, and the second driving member is configured to drive the second adsorption plate to rise and fall; When the second adsorption plate rises to a high position, the connection gap is formed between the second adsorption plate and the first adsorption plate; when the second adsorption plate drops to a low position, the second adsorption plate is configured to press the head end of the adsorbed second adhesive film onto the tail end of the first adhesive film located on the first adsorption plate, or to press the tail end of the adsorbed second adhesive film onto the head end of the first adhesive film located on the first adsorption plate.

5. The film feeding mechanism according to claim 4, characterized in that: The first connecting portion further includes a first driving member, the first adsorption plate is connected to a driving end of the first driving member, and the first driving member is configured to drive the first adsorption plate to rise and fall; When the working film is the first film, the first adsorption plate is lowered to a low position to avoid the first film; When the unwinding of the first adhesive film is completed or the working adhesive film is the second adhesive film, the first adsorption plate rises to a high position to adsorb the tail end of the first adhesive film or the head end of the first adhesive film.

6. The film feeding mechanism according to claim 4, characterized in that: The adsorption surface of the first adsorption plate and / or the second adsorption plate is configured to perform back-flushing on the first adhesive film and the second adhesive film that have been connected.

7. The film feeding mechanism according to claim 4, wherein: A heating element is provided on the second adsorption plate or the first adsorption plate; When the second adsorption plate presses the leading end of the second adhesive film onto the trailing end of the first adhesive film, the heating element heats the leading end of the second adhesive film and the trailing end of the first adhesive film, so that the leading end of the second adhesive film is adhered to the trailing end of the first adhesive film; When the second adsorption plate presses the tail end of the second film onto the head end of the first film, the heating element heats the tail end of the second film and the head end of the first film so that the tail end of the second film is bonded to the head end of the first film.

8. The film feeding mechanism according to claim 4, characterized in that: The second connecting portion further includes a welding assembly; The welding assembly is arranged above the second adsorption plate, and an avoidance channel for the welding assembly to pass through is provided on the second adsorption plate, or the welding assembly is arranged below the first adsorption plate, and an avoidance channel for the welding assembly to pass through is provided on the first adsorption plate; When the second adsorption plate presses the leading end of the second adhesive film onto the trailing end of the first adhesive film, the welding assembly is configured to pass downward through the avoidance channel on the second adsorption plate or upward through the avoidance channel on the first adsorption plate, and heat the leading end of the second adhesive film and the trailing end of the first adhesive film, so that the leading end of the second adhesive film is bonded to the trailing end of the first adhesive film; When the second adsorption plate presses the tail end of the second adhesive film onto the head end of the first adhesive film, the welding component is configured to pass downward through the avoidance channel on the second adsorption plate or upward through the avoidance channel on the first adsorption plate, and heat the tail end of the second adhesive film and the head end of the first adhesive film so that the tail end of the second adhesive film is bonded to the head end of the first adhesive film.

9. The film feeding mechanism according to claim 2, wherein: The film feeding mechanism further includes a tensioning wheel, which is arranged between the connecting mechanism and the punching mechanism and is located below the connecting mechanism and the punching mechanism; The working film passing through the connecting mechanism passes downward around the tensioning wheel and then passes into the punching mechanism. The tensioning wheel is configured to move up and down under the pulling of the working film to tension the working film.

10. The film feeding mechanism according to claim 9, characterized in that: A sensor is provided on the tensioning wheel. When the unwinding of the first material roll or the second material roll is completed, the tensioning wheel drops to the lowest position under the action of its own gravity, and the sensor is triggered to generate a connection signal. The sensor is electrically connected to the pushing mechanism.

11. The film feeding mechanism according to claim 1, wherein: The punching mechanism includes a supporting plate and a punch, wherein the supporting plate is provided with a punching hole, and the punch is provided directly above the punching hole; The working adhesive film passes through between the punch and the carrier plate, and the punch is configured to punch downward into the punching hole to punch out the through hole in the working adhesive film.

12. The film feeding mechanism according to claim 1, wherein: The pushing mechanism is arranged between the punching mechanism and the cutting mechanism, and includes an upper pressing wheel and a lower pressing wheel arranged in pairs, and the working film passes between the upper pressing wheel and the lower pressing wheel. The upper pressing wheel and the lower pressing wheel are configured to rotate in opposite directions to push the working film backward.

13. The film feeding mechanism according to claim 1, wherein: The cutting mechanism includes an upper cutter and a lower cutter arranged in pairs, the working film passes between the upper cutter and the lower cutter, and the upper cutter and the lower cutter are configured to be able to move relative to each other to cut the working film.

14. The film feeding mechanism according to claim 1, wherein: The two feeding tables are provided, and the film feeding mechanism further includes a rotary drive unit, the two feeding tables are relatively connected to the movable component of the rotary drive unit, and the rotary drive unit is configured to drive the two feeding tables to rotate so that the two feeding tables alternately rotate to a receiving position close to the cutting mechanism and a feeding position away from the cutting mechanism; The working film is pushed by the pushing mechanism to the feeding table located at the receiving station; The film sheet is taken away from the feeding table located at the feeding station; or, There is one feeding table, and the film feeding mechanism further includes a translation drive unit, the feeding table is connected to a movable component of the translation drive unit, and the translation drive unit is configured to drive the feeding table to translate toward and away from the cutting mechanism, so that the feeding table switches between a receiving station close to the cutting mechanism and a feeding station away from the cutting mechanism; The working film is pushed by the pushing mechanism to the feeding table located at the receiving station; The film sheet is taken away from the feeding table located at the feeding station.

15. The film feeding mechanism according to claim 1, wherein: The film feeding mechanism further includes a support member, which is located in front of the cutting mechanism and close to the cutting mechanism. The support member is used to support a new free end of the working film after the cutting mechanism cuts the working film.

16. A device for applying adhesive film, characterized in that: The adhesive film laminating device comprises the adhesive film feeding mechanism and the film taking mechanism according to any one of claims 1 to 15, wherein: The film taking mechanism is configured to suck the adhesive film sheet from the feeding table of the adhesive film feeding mechanism, and install the sucked adhesive film sheet on the bus bar lead of the battery string group, and the bus bar lead passes through the through hole of the adhesive film sheet.

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