A rewinding apparatus for collecting cast film

Abstract

The application discloses a rewinding equipment for collecting cast film, and relates to the technical field of cast film rewinding. The upper end rear side of a rewinding frame is connected with the lower ends of two adaptive frames. Lifting grooves are formed in the sides of the two adaptive frames that are close to each other. The inner walls of the two lifting grooves are slidably connected with the outer wall of a rewinding shaft. The left and right sides of the outer wall of the rewinding shaft are connected with the inner rings of two edge rings. The side of the adaptive frame that is away from the outer supporting arc-shaped plate is rotatably connected with a rotating shaft. The application has the advantages that the height of the rewinding shaft can be adjusted to adapt to cast films in different scenes and states. The central radius of the rewound cast film can be adjusted, so that the rewinding shaft can stably rotate at different heights. The angle position of the bearing rod can be controlled and fixed, so that the bearing rod is more stable. The fixing block can limit the rotation angle of the bearing rod, improve the flexibility of the rewinding equipment, and increase the adaptability of rewinding different cast films.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cast film rewinding, in particular to a rewinding equipment for collecting cast film. BACKGROUND

[0002] The cast film is a kind of flat extrusion film produced by melt casting and quenching, which has single-layer casting and multi-layer co-extrusion casting, and has the characteristics of high production speed, high yield, excellent transparency, glossiness and thickness uniformity compared with blown film. At the same time, the cast film is a subsequent process of flat extrusion film, such as printing and compounding, which is very convenient, and is widely used in the packaging of food, medical supplies, textiles, flowers and daily necessities. The production of cast film started late in China, and the foundation is weak, but the development speed is fast. After nearly 20 years of continuous development, the cast film has become a sunrise industry with considerable production capacity and production level in the packaging industry. At the same time, when the cast film is transported, it needs to be wound to increase the convenience of transportation.

[0003] The common rewinding equipment for collecting cast film has single adjustment function, which is difficult to quickly adapt to the installation requirements in different production scenes, and cannot adapt to the requirements of different products for the diameter of the winding core. Therefore, we propose a rewinding equipment for collecting cast film. SUMMARY

[0004] The purpose of the present application is to provide a rewinding equipment for collecting cast film.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a rewinding equipment for collecting cast film, comprising a rewinding equipment main body, the rewinding equipment main body comprising a rewinding frame and an adaptation mechanism connected to the rewinding frame, the adaptation mechanism comprising an adaptation frame, a rewinding shaft, an outer support arc-shaped plate, an edge ring, a rotating shaft, a bearing rod, an L-shaped frame, a trapezoidal limiting block and a fixing block, the upper end rear side of the rewinding frame is connected to the lower end of two adaptation frames, the side of each of the two adaptation frames close to each other is provided with a lifting groove, the inner wall of the two lifting grooves is connected to the outer wall of the rewinding shaft in a sliding manner, the rewinding shaft is connected to the outer support arc-shaped plate through a power mechanism, the left and right sides of the outer wall of the rewinding shaft are connected to the inner circle of two edge rings, the side of the adaptation frame away from the outer support arc-shaped plate is connected to the rotating shaft in a rotating manner, the outer wall front end of the rotating shaft is connected to the bearing rod, the outer wall upper end of the rotating shaft is connected to the L-shaped frame, the side of the adaptation frame away from the outer support arc-shaped plate is connected to the fixing block, and the fixing block is located below the rotating shaft, the side of the adaptation frame away from the outer support arc-shaped plate is provided with a lifting sliding groove, the inner wall of the lifting sliding groove is connected to the outer wall of the trapezoidal limiting block in a sliding manner, the lifting movement of the rewinding shaft drives the synchronous frame through the trapezoidal sliding block, the expansion radius of the outer support arc-shaped plate is synchronously controlled, and the linear linkage adjustment of the height and the winding diameter is realized.

[0006] As a further scheme of the present application: the power mechanism comprises a servo motor, a drive shaft, a gear transmission belt and a synchronous shaft, the edge ring is connected with the servo motor away from the side of the outer support arc-shaped plate, six through holes are formed in the side of the edge ring away from the outer support arc-shaped plate, the inner walls of the six through holes are rotatably connected with the outer walls of one drive shaft and five synchronous shafts, the rear end of the adaptive frame is connected with the synchronous frame through the synchronous limiting mechanism, and the synchronous frame is matched with the L-shaped frame.

[0007] As a further scheme of the present application: the outer walls of the drive shaft and the five synchronous shafts are connected with gear columns, and the six gear columns are connected with each other through the gear transmission belt.

[0008] As a further scheme of the present application: the outer wall of the drive shaft is connected with the output shaft of the drive shaft through the speed change gear set away from the side of the outer support arc-shaped plate, and the drive shaft and the five synchronous shafts are arranged through the through hole of the edge ring, and the rewinding shaft is connected with the unfolding mechanism.

[0009] As a further scheme of the present application: the unfolding mechanism comprises a base frame, a first mounting block, a second mounting block, an unfolding shaft, a translation shaft and an unfolding frame, the outer wall of the rewinding shaft is provided with an arc-shaped groove, the bottom wall of the arc-shaped groove is connected with the base frame, and the upper end of the base frame extends to the outside of the arc-shaped groove.

[0010] As a further scheme of the present application: the upper sides of the left and right ends of the base frame are connected with two second mounting blocks and two first mounting blocks respectively, the left end of each of the two first mounting blocks is provided with a through hole, and the drive shaft is arranged through the through hole of the first mounting block.

[0011] As a further scheme of the present application: the left and right ends of the unfolding shaft are rotatably connected with the sides of the two second mounting blocks close to each other, the unfolding shaft is connected with the drive shaft through the reversing gear set, the front and rear sides of the lower end of the outer support arc-shaped plate are provided with mounting grooves, the left and right inner walls of the two mounting grooves are provided with smooth grooves, the inner walls of the two smooth grooves are slidably connected with the outer walls of the translation shafts, the left and right sides of the two unfolding frames are provided with connecting holes and lower connecting holes, the inner walls of the two connecting holes are rotatably connected with the outer walls of the two translation shafts, and the inner walls of the two lower connecting holes are connected with the outer walls of the unfolding shaft and the drive shaft respectively.

[0012] As a further scheme of the present application: the synchronous limiting mechanism comprises a trapezoidal sliding block and a telescopic limiting rod, the rear end of the adaptive frame is provided with a trapezoidal sliding groove, the inner wall of the trapezoidal sliding groove is slidably connected with the outer wall of the trapezoidal sliding block, the trapezoidal sliding block extends to the outside of the trapezoidal sliding groove, and the end of the trapezoidal sliding block close to the L-shaped frame is connected with the side of the synchronous frame close to the trapezoidal sliding block.

[0013] As a further scheme of the present application: the front wall of the trapezoidal sliding groove is provided with a limiting hole, the rear end of the trapezoidal sliding block is provided with a telescopic limiting hole, the inner wall of the telescopic limiting hole is in sliding connection with the outer wall of the telescopic limiting rod, and the telescopic limiting rod is matched with the limiting hole.

[0014] Compared with the prior art, the present application has the following advantages:

[0015] 1. The height of the rewinding shaft can be adjusted by the adaptive frame to adapt to the cast film in different scenarios and states, the center radius of the rewound cast film can be adjusted by the outwardly extending arc-shaped plate, the rewinding shaft can be stably rotated at different heights by the rotating shaft and the bearing rod, the angle position of the bearing rod can be controlled and fixed by the L-shaped frame, the lifting sliding groove and the trapezoidal limiting block, the rotating angle of the bearing rod can be limited and the bearing rod can be supported by the fixing block, the flexibility of the rewinding equipment is improved, the adaptability of rewinding different cast films is increased, and the rewound cast film can adapt to different conveying equipment.

[0016] 2. The power of the servo motor can be transmitted to the driving shaft through the variable speed gear set, the rotating speed of the driving shaft is lower than that of the servo motor due to the variable speed gear set, the installation of the power equipment is reduced, the multiple synchronous frames can be synchronously driven to rotate when the trapezoidal sliding block is lifted, the synchronicity of the synchronous frames is increased, and the convenience of the rewinding shaft during height adjustment is increased.

[0017] 3. The first mounting block and the second mounting block can be provided with independent mounting spaces by the base frame, the angle of the unfolding frame can be controlled by the unfolding shaft, the power of the driving shaft can be reversely transmitted to the unfolding shaft by the reverse gear set, the two unfolding frames can unfold the outwardly extending arc-shaped plate, the distance between the outwardly extending arc-shaped plate and the rewinding shaft is adjusted, and the hollow radius during the rewinding of the cast film can be controlled.

[0018] Other advantages, objects, and features of the present application will be apparent to those skilled in the art from the following specification, in some degree of certainty, and in some degree of certainty, based on the study of the following, or can be taught from the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a whole three-dimensional schematic view in the embodiment of the present application;

[0020] Figure 2 It is a three-dimensional schematic view of the adaptive frame in the embodiment of the present application;

[0021] Figure 3 It is a three-dimensional schematic view of the edge ring in the embodiment of the present application;

[0022] Figure 4 It isFigure 3 Enlarged view of the middle A;

[0023] Figure 5 Enlarged view of the middle A;

[0024] Figure 6 Enlarged view of the middle A;

[0025] Figure 7 Enlarged view of the middle A; Figure 6 Enlarged view of the middle A;

[0026] Figure 8 Enlarged view of the middle A;

[0027] Figure 9 Enlarged view of the middle A;

[0028] Figure 10 Enlarged view of the middle A;

[0029] In the figure: 1, rewinding equipment main body; 11, rewinding frame; 2, adaptive mechanism; 201, adaptive frame; 202, rewinding shaft; 203, arc-shaped plate of external support; 204, edge ring; 205, rotating shaft; 206, bearing rod; 207, L-shaped frame; 208, lifting sliding groove; 209, trapezoidal limiting block; 210, synchronous frame; 211, fixed block; 3, power mechanism; 31, servo motor; 32, variable speed gear set; 33, drive shaft; 34, gear tooth transmission belt; 35, synchronous shaft; 4, unfolding mechanism; 41, base frame; 42, arc-shaped slot; 43, first mounting block; 44, second mounting block; 45, unfolding shaft; 46, reverse gear set; 47, mounting slot; 48, translation shaft; 49, unfolding frame; 5, synchronous limiting mechanism; 51, trapezoidal sliding block; 52, trapezoidal sliding groove; 53, limiting hole; 54, telescopic limiting rod. DETAILED DESCRIPTION

[0030] The specific embodiments of the present application will be further described below with reference to the drawings, and it should be noted that the description of these embodiments is used to help understand the present application, but does not constitute a limitation on the present application.

[0031] In addition, the technical features involved in each of the embodiments of the present application described below can be combined with each other as long as they do not conflict with each other. Embodiment one

[0032] The application discloses a rewinding device for collecting a cast film, and the cast film production process has different requirements for the rewinding process, for example, food packaging film usually needs more stable rewinding tension to ensure the flatness and sealing performance of the film material, medical packaging film has higher requirements for the cleanliness and core diameter precision of rewinding, and industrial film may need to adapt to a large-width and high-strength rewinding scene.

[0033] When the production workshop needs to switch to produce different types of cast film, the traditional rewinding device has single adjusting function and is difficult to quickly adapt to the installation and rewinding requirements of different film materials, so that the cast film is easily damaged during transportation, for example, the height of the rewinding shaft may need to be frequently adjusted to match the discharge position of the production line when the film material is replaced, the traditional device has a complicated adjusting process and takes a long time, which affects the production efficiency, meanwhile, different film materials have different requirements for the center radius of rewinding, the traditional device cannot be flexibly adjusted, which may cause unstable quality of the rewound film roll and easily cause problems such as wrinkles and breakage after transportation.

[0034] Therefore, in order to effectively solve the above problems, the application provides a rewinding device for collecting a cast film, as shown in the accompanying drawings Figures 1-10 The rewinding device for collecting a cast film comprises a rewinding device body 1, the rewinding device body 1 comprises a rewinding frame 11 and an adapting mechanism 2 connected to the rewinding frame 11, the adapting mechanism 2 comprises an adapting frame 201, a rewinding shaft 202, an outer supporting arc-shaped plate 203, an edge ring 204, a rotating shaft 205, a bearing rod 206, an L-shaped frame 207, a trapezoidal limiting block 209 and a fixing block 211, the upper end rear side of the rewinding frame 11 is connected to the lower ends of the two adapting frames 201, the side close to each other of the two adapting frames 201 is provided with a lifting groove, the inner walls of the two lifting grooves are slidably connected to the outer wall of the rewinding shaft 202, the rewinding shaft 202 is connected to the outer supporting arc-shaped plate 203 through a power mechanism 3, the left and right sides of the outer wall of the rewinding shaft 202 are connected to the inner rings of the two edge rings 204, the side away from the outer supporting arc-shaped plate 203 of the adapting frame 201 is rotationally connected to the rotating shaft 205, the outer wall front end of the rotating shaft 205 is connected to the bearing rod 206, the outer wall upper end of the rotating shaft 205 is connected to the L-shaped frame 207, the side away from the outer supporting arc-shaped plate 203 of the adapting frame 201 is connected to the fixing block 211, and the fixing block 211 is located below the rotating shaft 205, the side away from the outer supporting arc-shaped plate 203 of the adapting frame 201 is provided with a lifting sliding groove 208, and the inner wall of the lifting sliding groove 208 is slidably connected to the outer wall of the trapezoidal limiting block 209.

[0035] The left end of the adapting frame 201 is connected to an L-shaped mounting frame, the upper end front side of the mounting frame is provided with a rubber block, and the rear end of the rubber block is in contact with the front end of the bearing rod 206.

[0036] Meanwhile, one end of the rewinding shaft 202 is connected with a winding motor, and the lower end of the winding motor is installed with a winding frame. The winding frame is arranged near one side of the rewinding shaft 202 in a half-ring manner, and is in sliding connection with the outer wall of the winding frame 11, so that the winding motor can stably drive the rewinding shaft 202 to rotate when started, and can also be adjusted in lifting following the lifting of the rewinding shaft 202;

[0037] The number and size of the bearing rods 206 can be adjusted according to the specifications of the rewinding shaft 202, and can be adjusted according to the radius of the rewinding shaft 202 and the needs of the bearing rods 206;

[0038] Specifically, the adaptive frame 201 is used to adjust the height of the rewinding shaft 202 to adapt to the casting film in different scenes and different states, the rewinding shaft 202 is used to rewind the casting film, the outer supporting arc-shaped plate 203 is used to adjust the central radius of the rewound casting film, the edge ring 204 is used to limit the winding range of the casting film, the rotating shaft 205 and the bearing rod 206 are used to bear the rewinding shaft 202, so that the rewinding shaft 202 can stably rotate at different heights, and the L-shaped frame 207 is used to control the angular position of the bearing rod 206, the lifting sliding groove 208 and the trapezoidal limiting block 209 are used to fix the angular position of the bearing rod 206, so that the bearing rod 206 is more stable, and the synchronous frame 210 is used to enable multiple L-shaped frames 207 to move synchronously, and the fixing block 211 is used to limit the rotation angle of the bearing rod 206 and support the bearing rod 206.

[0039] The bearing rod 206 can be adjusted in an angular range of 0°-90°, and is adapted to the height of the forklift fork of 300-1200mm. The outer supporting arc-shaped plate 203 has an unfolded radius range of 50-200mm, covering standard winding cores of 3 inches-6 inches and customized needs.

[0040] Linkage control of height adjustment and radius adjustment: when the rewinding shaft 202 is adjusted to different heights through the lifting groove, the outer supporting arc-shaped plate 203 is automatically adjusted in an equal proportion through the unfolding mechanism 4 to expand the radius, so as to ensure that the casting film winding tension is constant. For example, if the height is increased by 10%, the radius is expanded by 8% synchronously. Embodiment two

[0041] The power mechanism 3 includes a servo motor 31, a driving shaft 33, a gear transmission belt 34, and a synchronous shaft 35. One side of the edge ring 204 away from the outer supporting arc-shaped plate 203 is connected with the servo motor 31. Six through holes are formed in the side of the edge ring 204 away from the outer supporting arc-shaped plate 203. The inner walls of the six through holes are in rotational connection with the outer walls of one driving shaft 33 and five synchronous shafts 35. The rear end of the adaptive frame 201 is connected with the synchronous frame 210 through the synchronous limiting mechanism 5, and the synchronous frame 210 cooperates with the L-shaped frame 207;

[0042] The outer wall of the driving shaft 33 and the five synchronous shafts 35 are connected with tooth columns, and the six tooth columns are connected with each other through the tooth transmission belt 34.

[0043] The outer wall of the driving shaft 33 away from the outer support arc-shaped plate 203 is connected with the output shaft of the driving shaft 33 through the variable speed gear set 32, and the driving shaft 33 and the five synchronous shafts 35 are arranged through the through hole penetrating the edge ring 204, and the rewinding shaft 202 is connected with the unfolding mechanism 4.

[0044] The synchronous limiting mechanism 5 includes a trapezoidal slide block 51 and a telescopic limiting rod 54, and the rear end of the accommodating frame 201 is provided with a trapezoidal slide groove 52, the inner wall of the trapezoidal slide groove 52 is connected with the outer wall of the trapezoidal slide block 51 in a sliding manner, and the trapezoidal slide block 51 extends to the outside of the trapezoidal slide groove 52, and the end of the trapezoidal slide block 51 close to the L-shaped frame 207 is connected with the side of the synchronous frame 210 close to the trapezoidal slide block 51.

[0045] The front wall of the trapezoidal slide groove 52 is provided with a limiting hole 53, and the rear end of the trapezoidal slide block 51 is provided with a telescopic limiting hole, the inner wall of the telescopic limiting hole is connected with the outer wall of the telescopic limiting rod 54 in a sliding manner, and the telescopic limiting rod 54 is matched with the limiting hole 53.

[0046] Specifically, the servo motor 31 is used to provide power for the rotation of the driving shaft 33, the variable speed gear set 32 is used to transmit the power of the servo motor 31 to the driving shaft 33, and because of the variable speed gear set 32, the rotation speed of the driving shaft 33 is lower than that of the servo motor 31, the tooth transmission belt 34 can make the driving shaft 33 and the five synchronous shafts 35 rotate synchronously, the trapezoidal slide block 51 is used to connect a plurality of synchronous frames 210, and can drive a plurality of synchronous frames 210 to rotate synchronously when the trapezoidal slide block 51 is lifted, and the limiting hole 53 and the telescopic limiting rod 54 are used to fix the position of the trapezoidal slide block 51. Embodiment three

[0047] The unfolding mechanism 4 includes a base frame 41, a first mounting block 43, a second mounting block 44, an unfolding shaft 45, a translation shaft 48 and an unfolding frame 49, the outer wall of the rewinding shaft 202 is provided with an arc-shaped groove 42, the bottom wall of the arc-shaped groove 42 is connected with the base frame 41, and the upper end of the base frame 41 extends to the outside of the arc-shaped groove 42.

[0048] The upper sides of the left and right ends of the base frame 41 are respectively connected with two second mounting blocks 44 and two first mounting blocks 43, the left end of each of the two first mounting blocks 43 is provided with a through hole, and the driving shaft 33 is arranged through the first mounting block 43 through the through hole.

[0049] Two second installation blocks 44 are rotatably connected with the left and right ends of the unfolding shaft 45 on the side close to each other, the unfolding shaft 45 is connected with the driving shaft 33 through the reverse gear set 46, the front and rear sides of the lower end of the outer supporting arc-shaped plate 203 are provided with installation grooves 47, the left and right inner walls of the two installation grooves 47 are provided with smooth grooves, the inner walls of the two smooth grooves are slidably connected with the outer wall of the translation shaft 48, the two sides of the two unfolding frames 49 are provided with connecting holes and lower connecting holes, the inner walls of the two connecting holes are rotatably connected with the outer portions of the two translation shafts 48, and the inner walls of the two lower connecting holes are respectively connected with the outer walls of the unfolding shaft 45 and the driving shaft 33;

[0050] Specifically, the base frame 41 is used to provide independent installation space for the first installation block 43 and the second installation block 44, and support the first installation block 43 and the second installation block 44, the unfolding shaft 45 is used to control the angle of the unfolding frame 49, the reverse gear set 46 is used to reversely transmit the power of the driving shaft 33 to the unfolding shaft 45, the smooth groove is used to provide space for the movement of the translation shaft 48, and the unfolding frame 49 is used to unfold the outer supporting arc-shaped plate 203 and adjust the distance between the outer supporting arc-shaped plate 203 and the rewinding shaft 202.

[0051] Working principle:

[0052] First, according to the cast film, the height of the rewinding shaft 202 and the outer support arc plate 203 is adjusted, at this time, the rewinding shaft 202 and the outer support arc plate 203 are pulled to move upwards, the rewinding shaft 202 will be in contact with the lower end of the bearing rod 206, and the bearing rod 206 will be pushed to rotate along the rotating shaft 205, at this time, the rewinding shaft 202 can be moved to the upper side of the corresponding bearing rod 206, when moved to the set position, the rewinding shaft 202 is moved upwards again, and the corresponding height of the bearing rod 206 is horizontally placed, then the rewinding shaft 202 is lowered to make the rewinding shaft 202 in contact with the upper end of the corresponding height bearing rod 206, when it is necessary to adjust all the bearing rods 206 at the same time, the telescopic limiting rod 54 in the limiting hole 53 is taken out, the fixing of the trapezoidal slide block 51 is loosened, and the trapezoidal slide block 51 is moved downwards, at this time, the downward movement of the trapezoidal slide block 51 will drive all the synchronous frames 210 to move downwards, the synchronous frames 210 are connected with the side wall of the L-shaped frame 207 through the buckle structure, synchronous rotation is realized, and the rotation of the rotating shaft 205 will synchronously drive the bearing rod 206 to rotate, at this time, the telescopic limiting rod 54 is inserted into the inside of the limiting hole 53, and the trapezoidal slide block 51 is fixed, when it is necessary to adjust the inner diameter of the winding core when the cast film is wound, the servo motor 31 is started, at this time, the servo motor 31 drives the driving shaft 33 and the synchronous shaft 35 to rotate through the variable speed gear set 32 and the toothed gear transmission belt 34, the rotation of the driving shaft 33 cooperates with the reverse gear set 46 to make the unfolding shaft 45 rotate, and then drives the unfolding frame 49 to rotate, the rotation of the two unfolding frames 49 drives the two translation shafts 48 to move close to each other, the outer support arc plate 203 moves away from the rewinding shaft 202, and then the inner diameter of the winding core when the cast film is wound is adjusted, and thus the whole working process is completed.

[0053] The above-mentioned front, rear, left, right, up, down are based on the Figure 1 directions or positional relationships shown in the drawings.

[0054] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the scope of protection of the present application.

[0055] The embodiments of the present application are described in detail above with reference to the drawings, but the present application is not limited to the described embodiments.

[0056] For those skilled in the art, various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the present application, and still fall within the scope of protection of the present application.

Claims

1. A rewinding apparatus for collecting a cast film, comprising a rewinding apparatus body (1) comprising a rewinding frame (11) and an adaptation mechanism (2) connected to the rewinding frame (11), characterized in that: The adaptation mechanism (2) comprises an adaptation frame (201), a rewinding shaft (202), an outer support arc-shaped plate (203), an edge ring (204), a rotating shaft (205), a bearing rod (206), an L-shaped frame (207), a trapezoidal limiting block (209) and a fixing block (211), the upper end rear side of the rewinding frame (11) is connected with the lower ends of two adaptation frames (201), the side close to each other of the two adaptation frames (201) is provided with a lifting groove penetratingly, the inner wall of the two lifting grooves is in sliding connection with the outer wall of the rewinding shaft (202), the rewinding shaft (202) is connected with the outer support arc-shaped plate (203) through a power mechanism (3), the left and right sides of the outer wall of the rewinding shaft (202) is connected with the inner rings of two edge rings (204), the side away from the outer support arc-shaped plate (203) of the adaptation frame (201) is in rotary connection with the rotating shaft (205), the outer wall front end of the rotating shaft (205) is connected with the bearing rod (206), the outer wall upper end of the rotating shaft (205) is connected with the L-shaped frame (207), the side away from the outer support arc-shaped plate (203) of the adaptation frame (201) is connected with the fixing block (211), and the fixing block (211) is located below the rotating shaft (205), the side away from the outer support arc-shaped plate (203) of the adaptation frame (201) is provided with a lifting sliding groove (208), and the inner wall of the lifting sliding groove (208) is in sliding connection with the outer wall of the trapezoidal limiting block (209); The power mechanism (3) comprises a servo motor (31), a driving shaft (33), a gear tooth transmission belt (34) and a synchronous shaft (35), the side away from the outer support arc-shaped plate (203) of the edge ring (204) is connected with the servo motor (31), the side away from the outer support arc-shaped plate (203) of the edge ring (204) is provided with six through holes penetratingly, the inner walls of the six through holes are respectively in rotary connection with the outer walls of one driving shaft (33) and five synchronous shafts (35), and the rear end of the adaptation frame (201) is connected with a synchronous frame (210) through a synchronous limiting mechanism (5), and the synchronous frame (210) is matched with the L-shaped frame (207); The rewinding shaft (202) is connected with an unfolding mechanism (4); The unfolding mechanism (4) comprises a base frame (41), a first mounting block (43), a second mounting block (44), an unfolding shaft (45), a translation shaft (48) and an unfolding frame (49), the outer wall of the rewinding shaft (202) is provided with an arc-shaped groove (42), the bottom wall of the arc-shaped groove (42) is connected with the base frame (41), and the upper end of the base frame (41) extends to the outside of the arc-shaped groove (42). The synchronous limiting mechanism (5) comprises a trapezoidal slider (51) and a telescopic limiting rod (54), the rear end of the adaptive frame (201) is provided with a trapezoidal sliding groove (52), the inner wall of the trapezoidal sliding groove (52) is in sliding connection with the outer wall of the trapezoidal slider (51), and the trapezoidal slider (51) extends to the outside of the trapezoidal sliding groove (52); one end of the trapezoidal slider (51) close to the L-shaped frame (207) is connected with one side of the synchronous frame (210) close to the trapezoidal slider (51). The front wall of the trapezoidal sliding groove (52) is provided with a limiting hole (53), and the rear end of the trapezoidal slider (51) is provided with a telescopic limiting hole, the inner wall of the telescopic limiting hole is in sliding connection with the outer wall of the telescopic limiting rod (54), and the telescopic limiting rod (54) cooperates with the limiting hole (53).

2. A rewinding apparatus for cast film collection according to claim 1, characterized in that: The outer walls of the driving shaft (33) and the five synchronous shafts (35) are connected with tooth columns, and the six tooth columns are connected with each other through a tooth transmission belt (34).

3. A rewinding apparatus for cast film collection according to claim 2, characterized in that: The outer wall of the driving shaft (33) away from the outer support arc-shaped plate (203) is connected with the output shaft of the driving shaft (33) through a speed change gear set (32), and the driving shaft (33) and the five synchronous shafts (35) are arranged through the through holes penetrating the edge ring (204).

4. A rewinding apparatus for cast film collection according to claim 1, characterized in that: The upper sides of the left and right ends of the base frame (41) are connected with two second mounting blocks (44) and two first mounting blocks (43) respectively, the left ends of the two first mounting blocks (43) are provided with penetrating holes, and the driving shaft (33) penetrates the first mounting block (43) through the penetrating hole.

5. A rewinding apparatus for cast film collection according to claim 4, characterized in that: The left and right ends of the unfolding shaft (45) are rotatably connected with the sides close to each other of the two second mounting blocks (44), the unfolding shaft (45) is connected with the driving shaft (33) through a reverse gear set (46), the front and rear sides of the lower end of the outer support arc-shaped plate (203) are provided with mounting grooves (47), the left and right inner walls of the two mounting grooves (47) are provided with smooth grooves, the inner walls of the two smooth grooves are in sliding connection with the outer wall of the translation shaft (48), and the two sides of the two unfolding frames (49) are provided with connecting holes and lower connecting holes, the inner walls of the two connecting holes are rotatably connected with the outer walls of the two translation shafts (48), and the inner walls of the two lower connecting holes are connected with the outer walls of the unfolding shaft (45) and the driving shaft (33) respectively.

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