Film winding device

Abstract

The utility model relates to the technical field of thin film winding, in particular to a thin film winding device. The thin film winding device comprises a rack, a winding driving assembly and a winding mechanism, and the winding driving assembly is installed on the rack. The winding mechanism comprises a carrier plate, a clamping driving assembly and a mandrel assembly, and the output end of the winding driving assembly is connected with the carrier plate so as to drive the carrier plate to rotate relative to the rack. The clamping driving assembly is arranged on the carrier plate. And the output end of the clamping driving assembly is connected with the mandrel assembly, so that the mandrel assembly has a winding position and an unwinding position. When the core shaft assembly is located at the winding position, a thin film can be clamped, and a winding shaft for winding the thin film is formed. Or when the mandrel assembly is located at the unwinding position, the thin film can be released, and the diameter of the winding shaft can be reduced. The winding driving assembly drives the winding shaft to rotate so as to achieve automatic winding and collecting of the thin film, the collecting efficiency of the thin film is improved, the regularity of thin film collecting is achieved, the thin film is not prone to scattering, and the occupied space during thin film packaging is saved.

Description

Technical Field

[0001] This utility model relates to the field of film winding technology, and in particular to a film winding device. Background Technology

[0002] Currently, many products are wrapped in film (dustproof film) for protection during transportation and handling. Therefore, the film needs to be removed during product installation and use. After removal, the film is collected and packaged manually or mechanically. The film is usually simply crumpled into a ball or rolled up, which is not only inefficient but also results in irregularly shaped films that easily fall apart, taking up packaging space. Utility Model Content

[0003] The purpose of this invention is to provide a film winding device to improve the film collection efficiency and regularity, prevent the collected film from spreading out, and save packaging space.

[0004] To achieve this objective, the technical solution adopted by this utility model is as follows:

[0005] A film winding apparatus includes a frame, a winding drive assembly, and a winding mechanism. The winding drive assembly is mounted on the frame, and the winding mechanism includes:

[0006] The carrier plate, the output end of the winding drive assembly is connected to the carrier plate to drive the carrier plate to rotate relative to the frame;

[0007] A clamping drive assembly is disposed on the carrier plate;

[0008] A mandrel assembly, wherein the output end of the clamping drive assembly is connected to the mandrel assembly to give the mandrel assembly a winding position and an unwinding position; the mandrel assembly is configured to clamp the film and form a winding shaft for winding the film when in the winding position; or, when in the unwinding position, to release the film and reduce the diameter of the winding shaft.

[0009] Alternatively, the mandrel assembly includes at least two jaws and at least two mandrel plates, with the at least two jaws close to each other to clamp the film and the at least two mandrel plates far apart to form the winding shaft; or, the at least two jaws far apart to release the film and the at least two mandrel plates close to each other to reduce the diameter of the winding shaft.

[0010] As an optional solution, the mandrel assembly includes two jaws and two mandrel plates, one jaw is connected to one mandrel plate and moves in the same direction, and the other jaw is connected to the other mandrel plate and moves in the same direction;

[0011] The two grippers are located between the two mandrel plates, and the other gripper is disposed between one of the connected grippers and one of the mandrel plates.

[0012] As an optional solution, the film winding device further includes an unwinding mechanism, which includes:

[0013] The first turntable has a clearance hole, the mandrel assembly is movably inserted through the clearance hole and moves between the winding position and the unwinding position; the frame has a mounting hole, the first turntable is rotatably disposed in the mounting hole and rotates synchronously with the carrier plate relative to the frame.

[0014] An unwinding drive assembly is disposed on the frame and drivenly connected to the first turntable, the first turntable being configured to move away from the carrier plate when the mandrel assembly is in the unwinding position to eject the film wound on the winding shaft.

[0015] As an optional solution, the unwinding mechanism further includes:

[0016] The second turntable is spaced apart from the first turntable, and the carrier plate is located between the first turntable and the second turntable; the output end of the unwinding drive assembly is connected to the second turntable;

[0017] The first guide post moves through the carrier plate, and its two ends are connected to the first turntable and the second turntable, respectively.

[0018] As an optional solution, the unwinding drive component includes:

[0019] An unwinding drive unit is mounted on the frame;

[0020] A support plate, wherein the output end of the unwinding drive is connected to the support plate;

[0021] The guide roller assembly includes at least two guide rollers, each of which is rotatably mounted on the support plate, and the circumferential edge of the second turntable is sandwiched between the at least two guide rollers.

[0022] As an optional solution, the film winding device further includes a tension mechanism disposed below the mandrel assembly; the tension mechanism includes:

[0023] Tensioner;

[0024] A tension drive component is mounted on the tension frame;

[0025] The tension roller assembly includes two tension rollers, which are rotatably arranged side by side on the tension frame. The tension drive is connected to the two tension rollers so that the circumferential surfaces of the two tension rollers are brought into contact and form a clamping channel for holding the film.

[0026] As an optional solution, the film winding device further includes a hot air gun, which is circumferentially arranged on the mandrel assembly, with the air outlet of the hot air gun facing the winding shaft.

[0027] As an optional solution, the film winding device further includes a tail-pressing mechanism, which includes:

[0028] A tail-pressing drive component is mounted on the frame;

[0029] A tail plate is provided, and the output end of the tail plate drive is connected to the tail plate to drive the tail plate to press against the outermost layer of the film wound on the winding shaft.

[0030] As an optional feature, the film winding device further includes a protective cover, which is mounted on the frame circumferentially along the winding shaft. The protective cover has an unwinding port for the film to exit and a feeding port for the film to pass through.

[0031] One end of the tail plate is rotatably mounted on the inner wall of the protective cover, and the tail plate drive drives the tail plate to rotate relative to the protective cover.

[0032] The beneficial effects of this utility model are as follows:

[0033] The film winding device proposed in this utility model involves a clamping drive assembly that drives a mandrel assembly to the winding position to form a winding shaft. The winding drive assembly then drives the winding shaft to rotate relative to the frame, thereby achieving automatic winding and collection of the film and improving film collection efficiency. The winding shaft winds the film into a roll, improving the regularity of film collection, and the rolled film is less likely to unravel, saving packaging space. Simultaneously, when the clamping drive assembly drives the mandrel assembly to the unwinding position, the mandrel assembly releases the film and reduces the diameter of the winding shaft, separating the rolled film from the winding shaft, facilitating the unwinding operation and further improving film collection efficiency. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the structure of the film winding device provided in this embodiment of the utility model;

[0035] Figure 2 This is a schematic diagram of the structure of the frame, winding mechanism and unwinding mechanism provided in the embodiment of this utility model;

[0036] Figure 3This is a schematic diagram of the winding mechanism provided in an embodiment of the present invention;

[0037] Figure 4 yes Figure 1 A magnified view of a portion of point A in the middle.

[0038] The component names and labels in the diagram are as follows:

[0039] 1. Frame; 11. First plate; 12. Second plate; 121. Mounting hole; 2. Carrier plate; 3. Clamping drive assembly; 4. Mandrel assembly; 41. Gripper; 42. Mandrel plate; 51. First turntable; 511. Clearing hole; 52. Unwinding drive assembly; 521. Unwinding drive component; 522. Support plate; 523. Guide roller; 524. Second guide post; 53. Second turntable; 54. First guide post; 6. Tension mechanism; 61. Tension frame; 62. Tension drive component; 63. Tension roller; 7. Hot air gun; 8. Tail pressing mechanism; 81. Tail pressing drive component; 82. Tail pressing plate; 9. Protective cover; 91. Feed port; 10. Rewinding drive assembly. Detailed Implementation

[0040] To make the technical problem solved by this utility model, the technical solution adopted, and the technical effects achieved clearer, the technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely for explaining this utility model and not for limiting it. Furthermore, it should be noted that, for ease of description, only the parts related to this utility model are shown in the accompanying drawings, not all of them.

[0041] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0042] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0043] In the description of this embodiment, the terms "upper," "lower," "right," and "left," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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 this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0044] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0045] During the installation and use of the product, the wrapping film needs to be removed. After removal, the film is collected and packaged manually or mechanically. The film is usually simply tucked into a ball or rolled up, which is not only inefficient but also results in irregular film that is easy to fall apart, taking up packaging space.

[0046] To solve the above problems, such as Figure 1 and Figure 2As shown, this embodiment proposes a film winding device, which includes a frame 1, a winding drive assembly 10, and a winding mechanism. The winding drive assembly 10 is mounted on the frame 1. The winding mechanism includes a carrier plate 2, a clamping drive assembly 3, and a mandrel assembly 4. The output end of the winding drive assembly 10 is connected to the carrier plate 2 to drive the carrier plate 2 to rotate relative to the frame 1. The clamping drive assembly 3 is disposed on the carrier plate 2. The output end of the clamping drive assembly 3 is connected to the mandrel assembly 4 so that the mandrel assembly 4 has a winding position and an unwinding position. When the mandrel assembly 4 is in the winding position, it can clamp the film and form a winding shaft for winding the film; or, when the mandrel assembly 4 is in the unwinding position, it can release the film and reduce the diameter of the winding shaft. The clamping drive assembly 3 drives the mandrel assembly 4 to move to the winding position and form a winding shaft, and the winding drive assembly 10 drives the winding shaft to rotate relative to the frame 1 to realize automatic winding and collection of the film, thereby improving the film collection efficiency. The winding shaft winds the film into a roll, improving the regularity of film collection and preventing the rolled film from unraveling, thus saving packaging space. Simultaneously, when the clamping drive assembly 3 drives the mandrel assembly 4 to the unwinding position, the mandrel assembly 4 releases the film and reduces the diameter of the winding shaft, separating the rolled film from the winding shaft. This facilitates the unwinding operation (the rolled film exits from the winding shaft), further improving film collection efficiency.

[0047] Specifically, the frame 1 in this embodiment includes a first plate 11 and a second plate 12. The first plate 11 and the second plate 12 are spaced apart along the front-back direction in the figure and are fixedly connected by a connecting rod to improve the stability of the frame 1 structure. The winding drive assembly 10 is mounted on the first plate 11, and the carrier plate 2 is located between the first plate 11 and the second plate 12. The frame 1 (second plate 12) has a mounting hole 121, and the mandrel assembly 4 passes through the mounting hole 121 and rotates synchronously with the winding drive assembly 10 and the carrier plate 2.

[0048] The winding drive assembly 10 in this embodiment includes a winding motor, a belt drive assembly, and a reducer. The winding motor is connected to the input end of the reducer via the belt drive assembly, and the output end of the reducer is connected to the carrier plate 2. The winding motor and the belt drive assembly are both mounted on the rear side of the first plate 11, while the reducer is mounted on the front side of the first plate 11, to achieve a reasonable distribution and compact installation of the winding drive assembly 10 on the first plate 11. Since the belt drive assembly and the reducer are existing technologies, they will not be described in detail here.

[0049] Specifically, the mandrel assembly 4 includes at least two jaws 41 and at least two mandrel plates 42. The at least two jaws 41 are close together to clamp the film, and the at least two mandrel plates 42 are far apart to form a winding shaft; or, the at least two jaws 41 are far apart to release the film, and the at least two mandrel plates 42 are close together to reduce the diameter of the winding shaft. The clamping drive assembly 3 drives the at least two jaws 41 to move closer together, causing them to converge and clamp the head of the film, thus fixing the film head and preventing relative slippage between the film and the winding shaft, improving the reliability of film winding. The clamping drive assembly 3 drives the at least two jaws 41 to move away from each other, causing them to open and release the head of the film, thus separating the wound film from the winding shaft. It should be noted that the convergence and opening states of the mandrel plates 42 are the opposite of those of the jaws 41. When the grippers 41 move closer together (converge), the mandrel plates 42 move further apart (open); when the grippers 41 move further apart (open), the mandrel plates 42 move closer together (converge), which reduces the diameter of the winding shaft, thereby disengaging it from the inner ring of the wound film and facilitating the unwinding operation.

[0050] like Figure 1 and Figure 2 As shown, the mandrel assembly 4 includes two grippers 41 and two mandrel plates 42. One gripper 41 is connected to one mandrel plate 42 and moves in the same direction, while the other gripper 41 is connected to the other mandrel plate 42 and moves in the same direction. The two grippers 41 are located between the two mandrel plates 42, and another gripper 41 is disposed between one connected gripper 41 and one mandrel plate 42. This arrangement allows one gripper 41 to move synchronously with one mandrel plate 42, and the other gripper 41 to move synchronously with the other mandrel plate 42, but in opposite directions. The clamping drive assembly 3 includes two motors. One gripper 41 is connected to one mandrel plate 42 to form a combined structure. The output end of each motor is connected to one of the combined structures to drive the two combined structures to move synchronously, thereby switching between the winding position and the unwinding position. The mandrel plate 42 is an arc plate, so that the winding shaft formed by the two arc plates is approximately cylindrical, facilitating the winding of the film. There is always a gap between the two mandrel plates 42 for the film to pass through, that is, the two mandrel plates 42 never contact each other, so as to prevent the film from being clamped by the two mandrel plates 42 in the film removal position, which would prevent the film from being removed from the winding shaft.

[0051] Furthermore, the film winding device also includes a protective cover 9, which is mounted circumferentially on the frame 1 along the winding shaft. The protective cover 9 has an unwinding opening for film ejection and a feed inlet 91 for film passage. The protective cover 9 has a cylindrical structure and surrounds the mandrel assembly 4 circumferentially. One axial end of the protective cover 9 is fixedly mounted to the second plate 12, and the other axial end of the protective cover 9 is open and forms an unwinding opening, so that the wound film exits the winding shaft from back to front through the unwinding opening. The bottom of the protective cover 9 is not closed to form the feed inlet 91, through which the film to be collected enters the protective cover 9 and is wound onto the winding shaft.

[0052] like Figure 1 As shown, the film winding device also includes a tension mechanism 6, which is located below the mandrel assembly 4. The tension mechanism 6 includes a tension frame 61, a tension drive 62, and a tension roller assembly. The tension drive 62 is mounted on the tension frame 61. The tension roller assembly includes two tension rollers 63, which are rotatably mounted side-by-side on the tension frame 61. The tension drive 62 is drive-connected to the two tension rollers 63, causing their circumferential surfaces to come into contact and form a clamping channel for holding the film. The tension mechanism 6 is located directly below the feed inlet 91 to apply tension to the film, ensuring its flatness during winding and preventing wrinkles or overlaps, thus further improving the regularity of film collection.

[0053] Specifically, the tension drive 62 is a pneumatic gripper, the output end of which is connected to two tension rollers 63 to adjust the spacing of the clamping channels, thereby controlling the tension force applied to the film by the two tension rollers 63. This ensures appropriate tension during film winding, improving winding efficiency and quality. Furthermore, since the tension rollers 63 are rotatably mounted on the tension frame 61, the film can drive the tension rollers 63 to rotate on the tension frame 61 as it passes through the clamping channels. This reduces friction between the film and the tension rollers 63, preventing excessive clamping force between the two tension rollers 63 from causing film breakage and improving the reliability of film winding.

[0054] Furthermore, such as Figure 1 As shown, the film winding device also includes a hot air gun 7. The hot air gun 7 is circumferentially arranged on the mandrel assembly 4, with its outlet facing the winding shaft. By using the hot air gun 7 to blow hot air onto the wound film, the film undergoes thermal shrinkage, improving the film's wrinkling and deformation, and ensuring the film is tightly wound onto the winding shaft, further enhancing the regularity of film collection. Since the hot air gun 7 is existing technology, its structure and operation will not be described in detail.

[0055] In this embodiment, two hot air guns 7 are arranged circumferentially around the mandrel assembly 4 and mounted at an angle on the protective cover 9. This allows them to blow hot air onto the wound film from different directions and positions, increasing the film's heating range and further improving the reduction of wrinkles and deformation. Simultaneously, the protective cover 9 can concentrate most of the hot air around the film on the winding shaft, ensuring a more snug fit. In other embodiments, the number, tilt angle, and mounting position of the hot air guns 7 can be flexibly adjusted according to winding requirements, and are not specifically limited here.

[0056] like Figure 1 As shown, the film winding device also includes a tail-pressing mechanism 8, which includes a tail-pressing drive 81 and a tail-pressing plate 82. The tail-pressing drive 81 is mounted on the frame 1. The output end of the tail-pressing drive 81 is connected to the tail-pressing plate 82 to drive the tail-pressing plate 82 to press against the outermost layer of the film wound on the winding shaft. Before the film winding ends, the tail of the film loses tension after disengaging from the tension roller 63. The tail-pressing drive 81 drives the tail-pressing plate 82 to press against the outermost layer of the film wound on the winding shaft, so as to apply a pressing force to the wound film through the tail-pressing plate 82, preventing the outermost layer of film from loosening, while ensuring that the tail of the film adheres to the winding shaft, thus improving the regularity of film collection.

[0057] Furthermore, one end of the tail plate 82 is rotatably mounted on the inner wall of the protective cover 9, and the tail-pressing drive 81 drives the tail plate 82 to rotate relative to the protective cover 9. One end of the tail plate 82 is pivotally connected to the inside of the protective cover 9. The tail-pressing drive 81 is a linear motor, the base of which is rotatably mounted on the second plate 12. The output end of the linear motor extends into the protective cover 9 and is connected to the tail plate 82. When the film is being wound normally, the linear motor drives the tail plate 82 to abut against the inner wall of the protective cover 9 to prevent the tail plate 82 from interfering with the film winding process. When the tail of the film leaves the tension roller 63, the tail-pressing drive 81 drives the tail plate 82 to rotate relative to the protective cover 9 and press against the outermost layer of the film wound on the winding shaft until the film winding is complete. When an unwinding operation is required, the tail-pressing drive 81 drives the tail plate 82 to rotate in the opposite direction and reset (again abutting against the inner wall of the protective cover 9) so that the rolled film can be separated from the winding shaft.

[0058] like Figure 2 and Figure 3As shown, the film winding device also includes an unwinding mechanism, which includes a first turntable 51 and an unwinding drive assembly 52. ​​The first turntable 51 has a clearance hole 511, through which the mandrel assembly 4 is movably inserted and moves between the winding position and the unwinding position. The first turntable 51 is rotatably disposed within the mounting hole 121 and rotates synchronously with the carrier plate 2 relative to the frame 1. The unwinding drive assembly 52 is disposed on the frame 1 and is drively connected to the first turntable 51. The first turntable 51 is configured to move away from the carrier plate 2 when the mandrel assembly 4 is in the unwinding position to push out the film wound on the winding shaft.

[0059] Specifically, the gripper 41 and mandrel plate 42 in the mandrel assembly 4 can move in the left-right direction within the clearance hole 511, allowing the mandrel assembly 4 to switch between the winding position and the unwinding position. The first turntable 51 and the carrier plate 2 can rotate synchronously relative to the frame 1, that is, the first turntable 51 and the mandrel assembly 4 rotate synchronously along the circumference of the first turntable 51 to wind the film onto the winding shaft. When the mandrel assembly 4 is in the unwinding position, the gripper 41 releases the head of the film, and the diameter of the winding shaft decreases and separates from the wound film. The unwinding drive assembly 52 is mounted on the first plate 11 and can drive the first turntable 51 to move from back to front along the axial direction of the winding shaft (front-back direction in the figure) to push the wound film out of the winding shaft, realizing the unwinding operation and improving the unwinding efficiency.

[0060] like Figure 2 and Figure 3 As shown, the unwinding mechanism also includes a second turntable 53 and a first guide post 54. The second turntable 53 is spaced apart from the first turntable 51, and the carrier plate 2 is located between the first turntable 51 and the second turntable 53. The output end of the unwinding drive assembly 52 is connected to the second turntable 53. The first guide post 54 moves through the carrier plate 2, and its two ends are connected to the first turntable 51 and the second turntable 53, respectively. Specifically, the output end of the reducer of the winding drive assembly 10 passes through the second turntable 53 and is connected to the carrier plate 2. By placing the carrier plate 2 between the first turntable 51 and the second turntable 53, a compact installation of the film winding device is achieved, reducing the space occupied by the film winding device. The first turntable 51 and the second turntable 53 are connected as one unit by the first guide post 54, so that the two turntables can rotate synchronously with the mandrel assembly 4 along the circumference of the first turntable 51. At the same time, the two turntables can also move in the front-back direction to push the wound film out of the winding shaft through the first turntable 51.

[0061] Specifically, four first guide posts 54 are provided, and four first guide sleeves are correspondingly provided on the carrier plate 2. The first guide posts 54 and the first guide sleeves slide in a one-to-one manner, which not only improves the structural strength of the two turntables, but also improves the stability of the two turntables moving in the front-to-back direction. In other embodiments, the number and installation position of the first guide posts 54 and the first guide sleeves can be flexibly adjusted, and are not specifically limited here.

[0062] like Figure 2 and Figure 4 As shown, the unwinding drive assembly 52 includes an unwinding drive component 521, a support plate 522, and a guide roller group. The unwinding drive component 521 is mounted on the frame 1. The output end of the unwinding drive component 521 is connected to the support plate 522. The guide roller group includes at least two guide rollers 523, which are rotatably mounted on the support plate 522. The circumferential edge of the second turntable 53 is clamped between the at least two guide rollers 523. Specifically, the unwinding drive component 521 is a cylinder, which has a simple structure and is easy to use and install. The unwinding drive component 521 is mounted on the rear side of the first plate 11, and the support plate 522 is movably mounted in front of the first plate 11 in the front-back direction. When the second turntable 53 rotates synchronously with the first turntable 51, the circumferential edge of the second turntable 53 rotates between the at least two guide rollers 523, so as to achieve clamping and limiting of the second turntable 53 in the front-back direction through the guide roller group, without affecting the circumferential rotation of the second turntable 53. The unwinding drive 521 drives the second turntable 53 and the first turntable 51 to move in the front-back direction through the support plate 522 and the guide roller group, so as to push the rolled film out of the winding shaft through the first turntable 51.

[0063] In this embodiment, two unwinding drive units 521 and two support plates 522 are provided, and each support plate 522 is rotatably mounted with two guide rollers 523 arranged side by side. The two support plates 522 are symmetrically arranged circumferentially along the second turntable 53, and the output ends of the two unwinding drive units 521 are respectively connected to one support plate 522 to synchronously drive the two support plates 522 to move in the front-back direction. In other embodiments, the number of unwinding drive units 521 and support plates 522 can also be three, four, or more than five. Multiple unwinding drive units 521 are installed on the rear side of the first plate 11, and multiple support plates 522 are movably installed in front of the first plate 11. The guide rollers on the multiple support plates 522 jointly support the second turntable 53, improving the uniformity of force on the second turntable 53.

[0064] Furthermore, the unwinding drive assembly 52 also includes a second guide post 524. A second guide sleeve is provided on the front side of the first plate 11. The second guide post 524 is slidably engaged with the second guide sleeve, and the second guide post 524 passes through the second guide sleeve and connects to the support plate 522. The sliding engagement between the second guide post 524 and the second guide sleeve provides guidance and limitation for the movement of the support plate 522 in the front-back direction, improving the stability of the two turntables moving in the front-back direction.

[0065] Specifically, four second guide posts 524 are provided, and four second guide sleeves are correspondingly provided on the carrier plate 2. The second guide posts 524 and the second guide sleeves are slidably engaged in a one-to-one correspondence. Each support plate 522 is connected to two second guide posts 524, which not only improves the stability of the two turntable structures, but also improves the stability of the two turntables moving in the front-back direction. In other embodiments, the number of second guide posts 524 and second guide sleeves can be flexibly adjusted, and no specific limitation is made here.

[0066] The above embodiments merely illustrate the basic principles and characteristics of this utility model. This utility model is not limited to the above embodiments. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A film winding device, characterized in that, The system includes a frame (1), a take-up drive assembly (10), and a winding mechanism. The take-up drive assembly (10) is mounted on the frame (1), and the winding mechanism includes: Carrier plate (2), the output end of the winding drive assembly (10) is connected to the carrier plate (2) to drive the carrier plate (2) to rotate relative to the frame (1); A clamping drive assembly (3) is disposed on the carrier plate (2); The mandrel assembly (4) is connected to the output end of the clamping drive assembly (3) so that the mandrel assembly (4) has a winding position and an unwinding position; the mandrel assembly (4) is configured to clamp the film and form a winding shaft for winding the film when it is in the winding position; or, when it is in the unwinding position, to release the film and reduce the diameter of the winding shaft.

2. The film winding device according to claim 1, characterized in that, The mandrel assembly (4) includes at least two jaws (41) and at least two mandrel plates (42), wherein the at least two jaws (41) are close to each other to clamp the film, and the at least two mandrel plates (42) are far apart from each other to form the winding shaft; or, the at least two jaws (41) are far apart from each other to release the film, and the at least two mandrel plates (42) are close to each other to reduce the diameter of the winding shaft.

3. The film winding device according to claim 2, characterized in that, The mandrel assembly (4) includes two grippers (41) and two mandrel plates (42). One gripper (41) is connected to one mandrel plate (42) and moves in the same direction. The other gripper (41) is connected to the other mandrel plate (42) and moves in the same direction. The two grippers (41) are located between the two mandrel plates (42), and the other gripper (41) is provided between one of the grippers (41) and one of the mandrel plates (42).

4. The film winding device according to claim 1, characterized in that, The film winding device further includes an unwinding mechanism, which includes: The first turntable (51) has a clearance hole (511), the mandrel assembly (4) is movably inserted through the clearance hole (511) and moves between the winding position and the unwinding position; the frame (1) has a mounting hole (121), the first turntable (51) is rotatably disposed in the mounting hole (121) and rotates synchronously with the carrier plate (2) relative to the frame (1); An unwinding drive assembly (52) is disposed on the frame (1) and drivenly connected to the first turntable (51), the first turntable (51) being configured to move away from the carrier plate (2) when the mandrel assembly (4) is in the unwinding position to push out the film wound on the winding shaft.

5. The film winding device according to claim 4, characterized in that, The unwinding mechanism also includes: The second turntable (53) is spaced apart from the first turntable (51), and the carrier plate (2) is located between the first turntable (51) and the second turntable (53); the output end of the unwinding drive assembly (52) is connected to the second turntable (53); The first guide post (54) moves through the carrier plate (2), and the two ends of the first guide post (54) are connected to the first turntable (51) and the second turntable (53) respectively.

6. The film winding device according to claim 5, characterized in that, The unwinding drive assembly (52) includes: An unwinding drive unit (521) is disposed on the frame (1); The support plate (522) is connected to the output end of the unwinding drive (521). The guide roller assembly includes at least two guide rollers (523), each of which is rotatably mounted on the support plate (522), and the circumferential edge of the second turntable (53) is sandwiched between the at least two guide rollers (523).

7. The film winding apparatus according to any one of claims 1 to 6, characterized in that, The film winding device further includes a tension mechanism (6), which is disposed below the mandrel assembly (4); the tension mechanism (6) includes: Tensioner (61); Tension drive component (62) is disposed on the tension frame (61); The tension roller assembly includes two tension rollers (63), which are rotatably arranged side by side on the tension frame (61); the tension drive (62) is connected to the two tension rollers (63) so that the circumferential surfaces of the two tension rollers (63) are in contact and form a clamping channel for clamping the film.

8. The film winding apparatus according to any one of claims 1 to 6, characterized in that, The film winding device also includes a hot air gun (7), which is circumferentially arranged on the mandrel assembly (4), with the air outlet of the hot air gun (7) facing the winding shaft.

9. The film winding apparatus according to any one of claims 1 to 6, characterized in that, The film winding device further includes a tail-pressing mechanism (8), which includes: Tail-pressing drive unit (81) is mounted on the frame (1); A tail plate (82) is connected to the output end of the tail drive (81) to drive the tail plate (82) to press against the outermost layer of the film wound on the winding shaft.

10. The film winding apparatus according to claim 9, characterized in that, The film winding device further includes a protective cover (9), which is mounted on the frame (1) circumferentially along the winding shaft. The protective cover (9) has an unwinding port for the film to exit and a feed port (91) for the film to pass through. One end of the tail plate (82) is rotatably disposed on the inner wall of the protective cover (9), and the tail drive (81) drives the tail plate (82) to rotate relative to the protective cover (9).

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