Intelligent waste edge cutting and automatic edge separating and recycling system for car cover film production

Abstract

The application discloses an intelligent waste edge cutting and automatic edge separating and recycling system for car film production and belongs to the technical field of film forming and processing. The system comprises a rack, an edge cutting mechanism and an edge material recycling mechanism. The upper and lower PET protective layers and TPU car film base film waste edges cut off are separated and conveyed to respective stations by the edge cutting mechanism and the edge material recycling mechanism. When cutting, the cutting line is automatically aligned for slitting by means of the station difference of the cutting table, a safe distance is maintained, the power of the middle group conveying roller is utilized, the edge is prevented from being curled after cutting, the composite cast film waste edge is separated from the TPU car film base film waste edge, the TPU car film base film waste edge is conveyed to a recycling machine by the two side edge guide rollers, and the TPU car film base film waste edge is crushed, recycled and granulated so as to be used for subsequent regeneration, and the upper and lower PET protective layer waste edges are conveyed to a waste edge winding machine by the waste edge guide wheel and the guide roller for combined winding, and the waste edge winding machine has an automatic winding changing function, and realizes intelligent full-automatic non-stop winding changing.

Description

Technical Field

[0001] This invention discloses film forming and processing technology, and in particular relates to an intelligent waste edge removal and automatic edge separation and recycling system for automotive film production. Background Technology

[0002] Cast film is a non-stretched, non-oriented flat-extruded film produced by rapidly cooling melt casting. Due to the production characteristics of cast film, the initially formed cast film needs to be cut. For example, when used to produce TPU car coating base film, for composite cast films, such as... Figure 1 As shown, when using TPU car wrap base film as the intermediate layer, PET protective layers are used on both the top and bottom sides for dust protection. During the lamination process, the PET protective layer will leave a certain width to ensure complete coverage of the TPU car wrap base film. When the waste edge is cut off, the width will be reduced to ensure that the intermediate layer of the composite cast film after the cut-off is completely covered by the protective layer. Therefore, the waste edge cut off will contain two layers of PET protective layer and one layer of TPU car wrap base film. Most of the waste edge cut off is combined and rolled up by a winding device for disposal. However, the waste edge cut off and rolled up in this way is difficult to separate and recycle because the PET protective layer and the TPU car wrap base film are entangled together. Therefore, it is necessary to improve the waste edge cutting and recycling mechanism. Summary of the Invention

[0003] The purpose of this invention is to provide an intelligent waste edge cutting and automatic edge separation and recycling system for automotive film production in order to solve the above-mentioned problems.

[0004] To achieve the above objectives, the present invention provides the following technical solution: an intelligent waste edge trimming and automatic edge separation and recycling system for automotive coating film production, comprising a frame, a trimming mechanism, and an edge recycling mechanism. The trimming mechanism includes a slitting cutter, a first set of conveying rollers located at the front end for waste edge trimming, and a second set of conveying rollers located at the rear end for conveying the trimmed waste edge as a conveying station for the composite cast film. The edge recycling mechanism includes two sets of waste edge guide rollers disposed above the waste edge trimming station of the first conveying roller set and a recycling machine located on the side of the frame. After the slitting cutter trims the waste edge of the composite cast film, the waste edges of the PET protective layer at the upper and lower ends are separated and conveyed by the upper and lower sets of conveying rollers of the first conveying roller set, respectively, while the TPU automotive coating base in the middle is conveyed separately. The waste film edge continues to be conveyed by the middle group of conveying rollers of the first conveying roller group. The composite cast film after waste edge slitting is conveyed to the rear second conveying roller group. The waste edge of the TPU car cover base film passes through the middle group of the first conveying roller group and is guided to the waste edge guide roller and conveyed to the recycling machine for scrap recycling. Waste edge guide wheels are respectively set at the frame above the first and second conveying roller groups. The upper PET protective layer waste edge is transferred to the waste edge guide wheel above the second conveying roller group via the waste edge guide wheel above the first conveying roller group. The lower PET protective layer waste edge is transferred to the waste edge guide wheel above the second conveying roller group and merged with the upper PET protective layer waste edge to form a composite waste edge for conveying. The composite cast film waste edge slitting process is as follows:

[0005] A1. Two layers of PET protective film and one layer of TPU car cover base film are laminated by the front-end laminating machine and then conveyed to the edge cutting mechanism to cut the edges to generate composite cast film waste edges. The composite cast film waste edges generated by the edge cutting are manually torn apart to separate the middle TPU car cover base film waste edges and the PET protective layer waste edges at the top and bottom ends.

[0006] A2, the waste edges of the TPU car cover base film separated on both sides of the composite cast film are conveyed to the recycling machine for scrap recycling via two sets of waste edge guide rollers. The waste edges of the PET protective layer separated on both sides are separated and conveyed by the upper and lower sets of conveying rollers of the first conveying roller group, and then merged and pressed into composite waste edges by the waste edge guide rollers and conveyed to the waste edge winding machine for collection and processing.

[0007] Preferably, the recycling machine includes a pressing guide roller for merging and pressing the waste edges of TPU car cover base film conveyed by two sets of waste edge guide rollers, a set of clamping rollers with toothed rollers that cooperate with each other, a set of winding rollers, and a crushing roller for crushing the waste edge slices of TPU car cover base film. Several sets of guide frames are provided between the pressing guide roller and the clamping roller. The guide frames are provided with guide through holes, and the guide through holes are provided with guide platforms that gradually narrow in the conveying direction.

[0008] Preferably, the middle conveyor roller of the first conveyor roller group serves as a waste edge removal station. A cutting table is installed on the middle conveyor roller of the first conveyor roller group at the waste edge removal station via a top screw sleeve. The shaft diameter of the cutting table is larger than that of the middle conveyor roller of the first conveyor roller group.

[0009] Preferably, the rear end of the second conveyor roller group is further provided with a waste edge winding machine for collecting composite waste edges. The waste edge winding machine includes a winding component, a changing component, an unwinding component, and a cutting component. The winding component includes guide rollers for guiding the composite waste edges on both sides, a winding roller controlled by a winding cylinder, and an air-expanded roll that frictionally engages with the winding roller. The changing component includes an active rotating plate driven by a changing motor and a sprocket to transfer the air-expanded roll, an arc plate located outside the active rotating plate, a guide wheel connected to the arc plate, a swing arm that drives the active rotating plate to make circumferential motion through the guide wheel, and a transfer rod for transferring the air-expanded roll. The unwinding component includes a flipping rod with a limit hook driven by an unwinding cylinder to transfer the air-expanded roll. The cutting component includes a knife holder located on the active plate, a guide roller on the knife holder for guiding the composite waste edges, a cutter located on the side of the guide roll, and a top film roller controlled by an ejector cylinder for pushing the composite waste edges to transfer.

[0010] Compared with the prior art, the beneficial effects of the present invention are:

[0011] This invention separates and transports the waste edges of the upper and lower PET protective layers and TPU car cover base film after cutting to their respective workstations through the edge cutting mechanism and edge recycling mechanism. During cutting, the position difference of the cutting table is used to ensure that the cutting blade can maintain a safe distance from the middle group of conveying rollers of the first conveying roller group. At the same time, the power of the middle group of conveying rollers during conveying makes the waste edge cutting line automatically aligned for cutting, and prevents the edge from curling after cutting.

[0012] After the PET protective layer waste edges at both ends are removed, they are separated and conveyed to the upper and lower conveying rollers of the first conveying roller group on both sides, so that the waste edges of the composite cast film are separated into TPU car cover base film waste edges. The TPU car cover base film waste edges are conveyed to the recycling machine for granulation and recycling via the waste edge guide rollers on both sides for subsequent recycling.

[0013] The waste edges of the PET protective layer at both ends are conveyed to the waste edge rewinder by the waste edge guide wheel and guide rollers for merging and rewinding. The waste edge rewinder has an automatic roll changing function, realizing intelligent, fully automatic roll changing without stopping the machine. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the conventional removal of waste edges in composite cast films in the background art;

[0015] Figure 2 This is an overall diagram of the intelligent waste edge cutting and automatic edge separation and recycling system for the production of car wrap film according to this application;

[0016] Figure 3 This is a schematic diagram of the conveying of waste edges of the PET protective layer and TPU car cover base film at both ends in this application;

[0017] Figure 4 This is a schematic diagram of the slitting tool and the cutting table;

[0018] Figure 5 This is a schematic diagram of a waste edge winding machine;

[0019] Figure 6 This is an overall diagram of the recycling machine;

[0020] Figure 7 This is a magnified view of a portion of the recycling machine.

[0021] Reference numerals: 1. Edge trimming mechanism; 2. Recycling machine; 3. Waste edge winding machine; 4. Guide roller; 5. Waste edge guide roller; 6. Slitting cutter; 7. Cutting table; 8. Arc plate; 9. Top film roller; 10. Swing rod; 11. Active rotating plate; 12. Cutter; 13. Transfer rod; 14. Guide wheel; 15. Flipping rod; 16. Winding roller; 17. Pressing guide roller; 18. Winding wheel; 19. Crushing wheel; 20. Guide frame; 101. First conveyor roller group; 1011. Upper conveyor roller group; 1012. Lower conveyor roller group; 1013. Middle conveyor roller group; 102. Second conveyor roller group. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. In this description, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Intelligent waste edge trimming and automatic edge separation and recycling system for car wrap film production, such as Figures 1-7As shown, the device includes a frame, an edge trimming mechanism 1, and an edge recycling mechanism 2. The edge trimming mechanism 1 includes a slitting cutter 6, a first conveyor roller group 101 located at the front end for waste edge trimming, and a second conveyor roller group 102 located at the rear end for conveying the trimmed waste edge as a conveying station for composite cast film. The edge recycling mechanism 2 includes two sets of waste edge guide rollers 5 disposed above the waste edge trimming station of the first conveyor roller group 101 and a recycling machine 2 located on the side of the frame. The middle set of conveyor rollers 1013 of the first conveyor roller group 101 serves as the waste edge trimming station. A cutting table 7, mounted via a top screw sleeve, is installed at the waste edge trimming station on the 013. The shaft diameter of the cutting table 7 is larger than that of the intermediate conveyor roller 1013 of the first conveyor roller group 101. This increases the station height difference between the waste edge trimming station and the intermediate conveyor roller 1013 of the first conveyor roller group 101, allowing the slitting cutter 6 to maintain a safe distance from the intermediate conveyor roller 1013 of the first conveyor roller group 101. Simultaneously, the power of the intermediate conveyor roller 1013 during conveying automatically aligns the waste edge cutting line for slitting, preventing edge curling after cutting. The waste edge slitting process for the composite cast film is as follows:

[0024] A1, after the two PET protective layers and one TPU car cover base film are laminated by the front-end laminating machine, they are conveyed to the edge cutting mechanism 1 for edge cutting to generate composite cast film waste edges. The composite cast film waste edges generated by edge cutting are manually torn apart to separate the middle TPU car cover base film waste edges and the PET protective layer waste edges at the top and bottom ends.

[0025] A2, the waste edges of the TPU car cover base film separated on both sides of the composite cast film are conveyed to the recycling machine 2 by two sets of waste edge guide rollers 5 for scrap recycling. The waste edges of the PET protective layer separated on both sides are separated and conveyed by the upper set of conveying rollers 1011 and the lower set of conveying rollers 1012 of the first conveying roller group 101, and then merged and pressed into composite waste edges by the waste edge guide wheel and conveyed to the waste edge winding machine for collection and processing.

[0026] After the slitting cutter cuts the waste edges of the composite cast film, the waste edges of the PET protective layer at the top and bottom ends are separated and conveyed by the upper conveying roller 1011 and the lower conveying roller 1012 of the first conveying roller group 101, respectively. The waste edges of the TPU car cover base film in the middle are continued to be conveyed by the middle conveying roller 1013 of the first conveying roller group 101. During the pre-adjustment and machine operation, the cut waste edges of the PET protective layer and TPU car cover base film at the top and bottom ends are separated by manual operation to their respective workstations to ensure continuous conveying without stopping the machine. The composite cast film after waste edge cutting is conveyed to the second conveying roller group 102 at the rear end and continues to be conveyed to the rear end for other processing.

[0027] Waste edges of TPU car cover base film are passed through the middle group of the first conveying roller group 101 to the waste edge guide roller 5 and guided to the recycling machine 2 for shredding and recycling. The recycling machine 2 includes a pressing guide roller 17 for merging and pressing the TPU car cover base film waste edges conveyed by the two sets of waste edge guide rollers 5, a set of toothed and cooperating pressing rollers, a set of winding rollers 18, and a crushing roller 19 for crushing the TPU car cover base film waste edge slices. Several sets of guide frames 20 are provided between the pressing guide roller 17 and the pressing rollers. The guide frames 20 are provided with guide through holes, and the guide through holes are gradually concave in the conveying direction. The narrowing guide table allows the waste edges of TPU car cover base film on both sides of the frame to be conveyed to the pressing guide roller 17 via the waste edge guide roller 5 for merging and pressing. The guide frame 20 and the guide table limit and guide the material to be tightened and fed into the pressing roller for further compression via the rolling teeth. After compression, the material is wound up by the winding roller 18. The crushing roller 19 mechanically slices and peels off the waste edges of TPU car cover base film wound up by the winding roller 18 through the crushing teeth on the outer side. The material falls into the granulator below for regeneration and granulation. This regeneration and granulation can be transferred to the front-end TPU car cover base film production step as raw material for recycling.

[0028] Waste edge guide wheels are respectively provided on the frame above the first conveyor roller group 101 and the second conveyor roller group 102. The waste edge of the upper PET protective layer is transferred to the waste edge guide wheel above the second conveyor roller group 102 via the waste edge guide wheel above the first conveyor roller group 101. The waste edge of the lower PET protective layer is transferred to the waste edge guide wheel above the second conveyor roller group 102 and merged with the waste edge of the upper PET protective layer to form a composite waste edge for conveying. A waste edge rewinding machine 3 for collecting the composite waste edge is also provided at the rear end of the second conveyor roller group 102.

[0029] like Figure 5 As shown, the waste edge winding machine 3 includes a winding component, a changing component, an unloading component, and a cutting component. The winding component includes guide rollers 4 for guiding the composite waste edges on both sides, a winding roller 16 controlled by a winding cylinder, and an air-expanded drum that frictionally engages with the winding roller 16. The changing component includes an active rotating plate 11 driven by a changing motor and a sprocket transmission for transferring the air-expanded drum, an arc plate 8 located outside the active rotating plate 11, a guide wheel 14 connected to the arc plate 8, a swing arm 10 that drives the active rotating plate 11 to perform circular motion via the guide wheel 14, and a mechanism for transferring the air-expanded drum. The transfer rod 13; the unwinding component includes a flip rod 15 with a limit hook driven by an unwinding cylinder to transfer the air-expanded roll; the cutting component includes a knife holder on the active plate, a guide roller on the knife holder for guiding the composite waste edge, a cutter 12 on the side of the guide roller, and a top film roller 9 controlled by an ejector cylinder for pushing the composite waste edge transfer. A robot arm (not shown in the figure) can be set above the waste edge winding machine 3 to grab and transfer the full roll of air-expanded roll and place new air-expanded rolls. The frames on both sides of the waste edge winding machine 3 are provided with workstations for placing new air-expanded rolls.

[0030] After the air-expanding drum has fully collected the composite waste edge, the active rotating plate 11, driven by the swing arm 10 and guide wheel 14, rotates the fully wound air-expanding drum along the track formed on the surface of the arc plate 8 to approach the transfer rod 13. The air-expanding drum slides down to the middle limit area of ​​the transfer rod 13 under its own weight and is limited. The transfer rod 13, through a cylinder, drives the limited air-expanding drum to move along the top of the two side frames. When the air-expanding drum is released from the limit of the transfer rod 13, it continues to roll to the flip rod 15 and is blocked by the limit hook. At this time, the fully wound air-expanding drum can be grabbed and transferred by the set robotic arm. When the air-expanding roll is transferred to the transfer rod 13, another set of robotic arms waits for the active rotating plate 11 to reset and rotates counterclockwise so that the position between the active rotating plate 11 and the swing rod 10 is in the position for placing the new air-expanding roll. Then, the new air-expanding roll is placed in the area between the two from above, and the active rotating plate 11 and the swing rod 10 are reset to the initial position. The cutter 12 slides along the cutter holder under control to cut off the composite waste edge. At this time, the top film roller 9 pushes the cut composite waste edge toward the new air-expanding roll under the control of the ejection cylinder, and transfers the composite waste edge to the new air-expanding roll under the frictional cooperation of the take-up roller 16.

[0031] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0032] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An intelligent waste edge cutting and automatic edge separating and recycling system for car film production, characterized in that, The utility model provides a cutting mechanism and edge material recycling mechanism of composite flow casting film production line, and the cutting mechanism includes a cutting tool, a first conveying roller group and a second conveying roller group, the edge material recycling mechanism includes two sets of edge guide rollers and a recycling machine, the cutting tool is used for cutting the composite flow casting film, the first conveying roller group is used for conveying the cutting tool, the second conveying roller group is used for conveying the cutting tool, the edge guide rollers are used for guiding the cutting tool, and the recycling machine is used for recycling the cutting tool. The utility model discloses a cutting mechanism and edge material recycling mechanism of composite flow casting film production line, and the cutting mechanism includes a cutting tool, a first conveying roller group and a second conveying roller group, the edge material recycling mechanism includes two sets of edge guide rollers and a recycling machine, the cutting tool is used for cutting the composite flow casting film, the first conveying roller group is used for conveying the cutting tool, the second conveying roller group is used for conveying the cutting tool, the edge guide rollers are used for guiding the cutting tool, and the recycling machine is used for recycling the cutting tool. The recycling machine includes a pressure guide roller, a set of compression wheel, a set of winding wheel and a crushing wheel, the pressure guide roller is used for merging and conveying the TPU car clothing base film waste edge, the set of compression wheel is used for compressing the TPU car clothing base film waste edge, the set of winding wheel is used for winding the TPU car clothing base film waste edge, and the crushing wheel is used for crushing the TPU car clothing base film waste edge.

2. The intelligent scrap edge cutting and automatic edge separating and recycling system for car film production according to claim 1, characterized in that, ​ 3. The intelligent scrap edge cutting and automatic edge separating and recycling system for car film production according to claim 2, characterized in that, The middle group of conveying rollers (1013) of the first conveying roller group (101) is used as a scrap edge cutting station, and a cutting table (7) installed through a jack sleeve is arranged on the middle group of conveying rollers (1013) of the first conveying roller group (101) at the scrap edge cutting station, and the shaft diameter of the cutting table (7) is larger than that of the middle group of conveying rollers (1013) of the first conveying roller group (101).

4. The intelligent scrap edge cutting and automatic edge separating and recycling system for car film production according to claim 3, characterized in that, The second conveying roller group (102) is further provided with a scrap edge coiling machine (3) for collecting the composite scrap edge, the scrap edge coiling machine (3) comprises a coiling component, a roll changing component, a roll unloading component and a cutting component, the coiling component comprises a guide roller (4) for guiding the composite scrap edge on both sides, a coiling roller (16) controlled by a coiling cylinder and an air inflation winding drum in frictional cooperation with the coiling roller (16), the roll changing component comprises a driving plate (11) for transferring the air inflation winding drum driven by a roll changing motor and a chain wheel transmission, an arc plate (8) located outside the driving plate (11), a guide wheel (14) connected with the arc plate (8), a swing rod (10) for making the driving plate (11) in circular motion driven by the guide wheel (14) and a transfer rod (13) for transferring the air inflation winding drum, the roll unloading component comprises a flip rod (15) with a limiting hook for transferring the air inflation winding drum driven by a roll unloading cylinder, and the cutting component comprises a cutter holder on the driving plate, a guide roller for guiding the composite scrap edge on the cutter holder, a cutting knife (12) on the side of the guide cylinder and a top film roller (9) for pushing the composite scrap edge to transfer controlled by an ejecting cylinder.

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