A spool changing apparatus and a film winding apparatus

Abstract

The utility model discloses a kind of reel replacement equipment and roll film equipment, wherein reel replacement equipment, comprising: base, including the storage station of being set in the lower part of base, processing station and blanking station;Conveying unit is set in the upper portion of base, conveying unit includes guide rail assembly and clamping assembly, guide rail assembly includes limit guide rail, limit guide rail extends arrangement along the direction of storage station, processing station to blanking station, clamping assembly is slidably set on limit guide rail, for between storage station, processing station and blanking station back and forth transfer reel. It can improve the degree of automation, improve production efficiency, reduce pollution to product.

Description

Technical Field

[0001] This utility model relates to the technical field of roll film production equipment, and in particular to a roll replacement device and a roll film equipment. Background Technology

[0002] In modern roll material processing industries, such as the handling of continuous materials like films, fabrics, and paper, the roll, as the core component carrying the material, needs to be frequently changed between different workstations (such as storage, processing, and unloading stations). Traditionally, the handling and replacement of rolls relies mainly on manual labor or simple semi-automatic equipment; for example, in some cases, steel wire ropes are used to suspend and support the roll. However, this method has significant drawbacks: steel wire ropes are prone to wear over long-term use, and the resulting abrasions fall directly onto the film surface below, severely contaminating the product's cleanliness and quality. Furthermore, manual operation is not only labor-intensive and inefficient, but also carries the risk of rolls falling, being damaged by impacts, or being mispositioned due to human error, directly affecting the continuity of the production line and product quality. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a reel-changing device that can improve automation, increase production efficiency, and reduce product contamination.

[0004] This utility model also proposes a film rolling device with the above-mentioned roll changing device.

[0005] A reel changing device according to a first aspect of the present invention includes: The machine base includes a storage station, a processing station and a material unloading station located at the lower part of the machine base; A conveying unit is disposed on the upper part of the machine base. The conveying unit includes a guide rail assembly and a clamping assembly. The guide rail assembly includes a limiting guide rail, which extends along the direction from the storage station, processing station to the unloading station. The clamping assembly is slidably disposed on the limiting guide rail and is used to transfer the roll back and forth between the storage station, processing station and unloading station.

[0006] According to an embodiment of this utility model, a reel changing device has at least the following beneficial effects: By setting a limiting guide rail extending along the storage, processing, and unloading station directions, and cooperating with a clamping component that can slide on it, automatic and continuous reciprocating transfer of the reel between multiple stations is realized, significantly reducing manual intervention and improving the overall production efficiency and operational continuity; the conveying unit is set on the upper part of the machine base, and the workstations are arranged at the lower part, forming a stable three-dimensional spatial layout. This structure not only makes full use of the equipment space, but also makes the conveying path of the reel clear and smooth, effectively ensuring the stability and reliability of the equipment operation; the clamping component slides along the limiting guide rail, and its movement trajectory is precisely constrained, which can accurately convey and position the reel to each target workstation, avoiding placement deviations that may occur during manual handling, and providing a guarantee for the accuracy of subsequent processing or unloading processes; the equipment integrates the conveying system and multiple functional workstations into a unified machine base frame, with a compact structure and small footprint, making it particularly suitable for modern cleanrooms or automated production line layouts with limited space.

[0007] According to some embodiments of the present invention, the clamping assembly includes a driving member, a fixed clamp, and a movable clamp; the fixed clamp and the movable clamp together constitute a clamping space for clamping the end of the reel; the driving member is kinetically connected to the movable clamp, and when the driving member extends, the clamping space is in an open state, and when the driving member retracts, the clamping space changes to a closed state.

[0008] According to some embodiments of the present invention, the upper end of the movable clamp is hinged to the fixed clamp, and the lower end of the movable clamp forms a concave portion to form the clamping space.

[0009] According to some embodiments of the present invention, the bottom of the concave portion is provided with a groove, and the lateral width of the groove is adapted to the axial thickness of the bearing mounted on the surface of the reel.

[0010] According to some embodiments of this utility model, the end faces of the fixed clamp and the movable clamp that contact the scroll are provided with a rounded transition treatment.

[0011] According to some embodiments of the present invention, the conveying unit further includes a height adjustment component, and the clamping component is mounted on the limiting guide rail via the height adjustment component; the height adjustment component is used to drive the clamping component to move in the vertical direction.

[0012] According to some embodiments of the present invention, two sets of limiting guide rails are provided and symmetrically arranged on both sides of the machine base; each set of limiting guide rails is equipped with the clamping component.

[0013] According to some embodiments of the present invention, the guide rail assembly further includes a guide rail disposed between the two sets of limiting guide rails; the two clamping assemblies are connected by a connecting rod to achieve synchronous movement, and the middle part of the connecting rod is slidably installed in the guide rail.

[0014] According to some embodiments of the present invention, a first positioning sensor, a second positioning sensor, and a third positioning sensor are respectively provided along the extension direction of the limiting guide rail. The first positioning sensor is provided corresponding to the storage station, the second positioning sensor is provided corresponding to the processing station, and the third positioning sensor is provided corresponding to the unloading station.

[0015] The film winding device according to a second aspect embodiment of the present invention includes the roll changing device of the first aspect embodiment.

[0016] The film rolling equipment according to the embodiments of this utility model has at least the following beneficial effects: by integrating the roller changing equipment, this film rolling equipment can realize the fully automatic circulation of rollers between storage, feeding, processing and unloading stations, without the need for manual intervention to change rollers, thereby realizing true full-process automation and continuity of film rolling production, and greatly improving the overall production efficiency.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 This is a schematic diagram of a reel replacement device according to an embodiment of the present utility model; Figure 2 This is a schematic diagram of the conveying unit according to an embodiment of the present utility model; Figure 3 This is a schematic diagram of the clamping assembly in the closed state according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the clamping component in the open state according to an embodiment of the present invention.

[0019] Reference numerals: Storage station 100; Processing station 110; Unloading station 120; Limiting guide rail 130; Height adjustment component 140; Base 150; Connecting rod 160; Guide rail 170; Fixed clamp 180; Movable clamp 190; Drive component 200; Clamping component 210; Hinge point 220; Reel 230; Slotting 240. Detailed Implementation

[0020] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0021] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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 this utility model.

[0022] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0023] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly. Those skilled in the art can reasonably determine the specific meaning of these terms in this utility model based on the specific content of the technical solution. In the description of this utility model, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples. In the description of this specification, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0024] Reference Figures 1 to 4A reel changing device, comprising: The machine base 150 includes a storage station 100, a processing station 110 and a material unloading station 120 disposed at the lower part of the machine base 150; The conveying unit is located on the upper part of the base 150. The conveying unit includes a guide rail assembly and a clamping assembly 210. The guide rail assembly includes a limiting guide rail 130, which extends along the direction from the storage station 100, the processing station 110 to the unloading station 120. The clamping assembly 210 is slidably disposed on the limiting guide rail 130 and is used to transfer the roll 230 back and forth between the storage station 100, the processing station 110 and the unloading station 120.

[0025] During equipment operation, the clamping assembly 210, slidably mounted on the limiting guide rail 130, first moves to the storage station 100 to pick up the roll 230 to be used. Then, the clamping assembly 210 precisely moves along the limiting guide rail 130 to the processing station 110, accurately placing the roll 230 for processing operations such as film winding. After processing is completed, the clamping assembly 210 moves again, picking up the processed roll 230 from the processing station 110 and finally transporting it to the unloading station 120 for unloading. Through the continuous reciprocating motion of the clamping assembly 210 on the limiting guide rail 130, the automatic and efficient transfer of the roll 230 between the three core stations of storage, processing, and unloading is achieved, forming a complete automated work cycle.

[0026] By setting a limiting guide rail 130 extending along the storage, processing, and unloading station 120, and cooperating with a clamping component 210 that can slide on it, the automatic and continuous reciprocating transfer of the reel 230 between multiple stations is realized, significantly reducing manual intervention and improving the overall production efficiency and operational continuity. The conveying unit is set on the upper part of the base 150, and the workstations are arranged at the lower part, forming a stable three-dimensional spatial layout. This structure not only makes full use of the equipment space, but also makes the conveying path of the reel 230 clear and smooth, effectively ensuring the stability and reliability of the equipment operation. The clamping component 210 slides along the limiting guide rail 130, and its movement trajectory is precisely constrained, which can accurately convey and position the reel 230 to each target workstation, avoiding placement deviations that may occur during manual handling, and providing a guarantee for the accuracy of subsequent processing or unloading processes. The equipment integrates the conveying system and multiple functional workstations within a unified base 150 frame, with a compact structure and small footprint, making it particularly suitable for modern cleanrooms or automated production line layouts with limited space.

[0027] The clamping assembly 210 includes a drive member 200, a fixed clamp 180, and a movable clamp 190; the fixed clamp 180 and the movable clamp 190 together form a clamping space for clamping the end of the scroll 230; the drive member 200 is connected to the movable clamp 190 in a driving manner, and the clamping space is in an open state when the drive member 200 extends, and the clamping space changes to a closed state when the drive member 200 retracts.

[0028] When it is necessary to grasp or release the scroll 230, the drive member 200 extends, pushing or pulling the movable clamp 190 connected to it, increasing the relative distance between the movable clamp 190 and the fixed clamp 180. At this time, the clamping space is in an open state, facilitating the entry or exit of the end of the scroll 230. When it is necessary to clamp the scroll 230, the drive member 200 retracts, driving the movable clamp 190 to move, causing it to tighten together with the fixed clamp 180. The clamping space then changes to a closed state, thus firmly holding the end of the scroll 230 and achieving a stable grip.

[0029] The linear extension and retraction of the drive component 200 directly controls the opening and closing of the clamping space, resulting in rapid response and simple control logic, ensuring precision and reliability in the clamping and releasing process. This assembly consists of the drive component 200, the fixed clamp 180, and the movable clamp 190. It has few components, a simple structure, a direct force transmission path, high overall rigidity, minimal deformation when clamping heavy objects, and high stability.

[0030] The upper end of the movable clamp 190 is hinged to the fixed clamp 180, and the lower end of the movable clamp 190 forms a concave portion to create a clamping space. The upper end of the movable clamp 190 is connected to the fixed clamp 180 via a hinge point 220, allowing the movable clamp 190 to open and close like a lever or jaws. When the lower end of the movable clamp 190 is driven (e.g., by a drive member 200) and swings outward, the concave portion at its lower end separates from the fixed clamp 180, opening the clamping space, at which point the end of the scroll 230 can be inserted. When the lower end of the movable clamp 190 swings inward to close, the concave portion at its lower end, together with the corresponding structure on the fixed clamp 180, forms an enclosing space that conforms to the shape of the end of the scroll 230, thereby securely holding the scroll 230 inside and achieving reliable clamping.

[0031] The concave design at the lower end of the movable clamp 190 increases the contact area with the end of the reel 230, transforming traditional point or line contact into stable surface contact. This effectively prevents the reel 230 from slipping or rotating during handling, resulting in a more secure clamping. The concave portion better encloses and conforms to the shape of the reel 230 end (especially the cylindrical surface), exhibiting a certain degree of self-adaptation. It can also achieve good clamping even for reels 230 with slight dimensional fluctuations, offering higher fault tolerance.

[0032] The end faces of the fixed clamp 180 and the movable clamp 190 that contact the spool 230 are provided with a rounded transition. When the fixed clamp 180 and the movable clamp 190 are closed to hold the spool 230, the end faces that contact the outer circular surface of the spool 230 are the direct force-bearing surfaces. By providing a rounded transition to this end face, the sharp corners of the contact surface are removed, forming a smooth, curved contact surface with a curvature that matches or is more gently sloping with the outer circle of the spool 230.

[0033] The rounded transition transforms the clamping force from concentrated stress to distributed stress, which not only protects the surface but also avoids minor deformation or damage to the structure of the reel 230 itself that may be caused by excessive local pressure, thus extending the service life of the reel 230.

[0034] The conveying unit also includes a height adjustment component 140, and the clamping component 210 is mounted on the limiting guide rail 130 via the height adjustment component 140; the height adjustment component 140 is used to drive the clamping component 210 to move in the vertical direction.

[0035] The gripping component is not directly and rigidly fixed to the limiting guide rail 130, but is mounted on a separate height adjustment component 140, which is itself connected to the limiting guide rail 130. When it is necessary to perform the action of picking up or placing the reel 230, the control system commands the height adjustment component 140 to move, driving its output end (i.e., the part where the gripping component 210 is mounted) to move precisely in the vertical direction. Moving downwards allows the gripping component 210 to be lowered to a height aligned with the reel 230 for gripping or releasing; moving upwards allows the gripping component 210 to be raised to a safe height for unobstructed horizontal transfer between workstations.

[0036] This design allows the equipment to adapt to different sizes of reels 230 or different workstation heights, which can be achieved by adjusting the clamping height, enhancing the equipment's versatility and production line compatibility. The clamping assembly 210 can be raised to a safe height before horizontal movement, avoiding interference with other parts of the equipment, and realizing a "lift-translation-lowering" motion path, making operation more efficient and safer.

[0037] Two sets of limiting guide rails 130 are symmetrically arranged on both sides of the base 150; each set of limiting guide rails 130 is equipped with a clamping assembly 210. The two sets of limiting guide rails 130 are symmetrically arranged on both sides of the base 150, forming two parallel and stable rigid guide paths. The clamping assembly 210 independently configured on each guide rail can be driven synchronously, thereby clamping and transferring from both ends of the reel 230 simultaneously. This design ensures that the two ends of the reel 230 receive completely symmetrical support and guiding constraints during the conveying process, effectively limiting any possible deflection, tilting, or swaying of the reel 230.

[0038] Symmetrical and balanced support and drive are provided from both ends of the reel 230, which completely avoids the swaying, tilting or rotation of the reel 230 that may be caused by single-point suspension or unilateral drive, ensuring that the conveying process is extremely smooth.

[0039] The guide rail assembly also includes a guide rail 170 disposed between two sets of limiting guide rails 130; the two clamping assemblies 210 are connected by a connecting rod 160 to achieve synchronous movement, and the middle part of the connecting rod 160 is slidably installed in the guide rail 170.

[0040] The guide rail 170, located between the two sets of limiting guide rails 130, provides an additional, centrally located sliding support point for the middle of the connecting rod 160. This connecting rod 160 rigidly connects the two clamping assemblies 210 at its ends into a single unit. When the drive system drives one of the clamping assemblies 210 or directly drives the connecting rod 160, power is directly transmitted to the other clamping assembly 210 through this rigid connecting rod 160. Because the middle of the connecting rod 160 is restricted to sliding within the guide rail 170, this design effectively prevents the connecting rod 160 and its two connected clamping assemblies 210 from twisting, jamming, or becoming asynchronous during movement, ensuring that they always move synchronously in a straight line. The mechanical connection of the rigid connecting rod 160 fundamentally guarantees the absolute synchronicity of the two clamping assemblies 210 during movement, eliminating the cumulative errors, deviations, or jamming that may occur due to separate driving, and ensuring that the reel 230 is always precisely aligned with the workstation.

[0041] Along the extension direction of the limiting guide rail 130, a first positioning sensor, a second positioning sensor and a third positioning sensor are respectively provided. The first positioning sensor is set at the storage station 100, the second positioning sensor is set at the processing station 110, and the third positioning sensor is set at the unloading station 120.

[0042] When the clamping assembly 210 moves along the guide rail under drive and passes through or reaches these specific positions, the corresponding positioning sensor is triggered. The sensor then generates a clear electrical signal and sends it to the main control system of the equipment. By identifying which sensor was triggered, the control system can accurately determine the current working stage of the clamping assembly 210 (such as preparing to pick up material at the storage station 100), and accordingly issue commands to stop, perform clamping / releasing actions, or continue to the next stage of the stroke.

[0043] A reel-changing device according to an embodiment of this application includes a base 150 and a conveying unit. The base 150 forms the main frame of the device, and its lower part is provided with a storage station 100, a processing station 110, and a unloading station 120 arranged along the process flow. The storage station 100 is used to store empty reels to be used, the processing station 110 is the position for processing operations such as film winding, and the unloading station 120 is used to temporarily store fully processed reels 230.

[0044] The conveying unit is located on the upper part of the base 150 and is used to automatically transport the roll 230 between the storage station 100, the processing station 110 and the unloading station 120. The conveying unit includes a guide rail assembly and a clamping assembly 210.

[0045] The guide rail assembly includes a limiting guide rail 130. The limiting guide rail 130 extends along the direction from the storage station 100, processing station 110 to the unloading station 120, providing a defined path for the transfer of the roll 230. In a preferred embodiment, two sets of limiting guide rails 130 are provided and symmetrically arranged on both sides of the base 150 to provide balanced and stable support.

[0046] The clamping assembly 210 is slidably mounted on the limiting guide rail 130 for directly gripping and transferring the roll 230. Correspondingly, each set of limiting guide rails 130 is equipped with a clamping assembly 210. To ensure precise synchronous movement of the two clamping assemblies 210 and prevent the roll 230 from skewing during transport, the guide rail assembly also includes a guide rail 170 disposed between the two sets of limiting guide rails 130. The two clamping assemblies 210 are connected by a connecting rod 160 to achieve synchronous movement, and the middle part of the connecting rod 160 is slidably mounted within the guide rail 170.

[0047] To precisely control the start and stop of the clamping assembly 210 at each station, a first positioning sensor, a second positioning sensor, and a third positioning sensor are respectively installed along the extension direction of the limiting guide rail 130. The first positioning sensor is installed at the storage station 100, the second positioning sensor is installed at the processing station 110, and the third positioning sensor is installed at the unloading station 120.

[0048] The clamping assembly 210 is the core component for performing the gripping action, and it includes a drive member 200, a fixed clamp 180, and a movable clamp 190. The fixed clamp 180 and the movable clamp 190 together form a clamping space for clamping the end of the scroll 230. The drive member 200 is kinetically connected to the movable clamp 190 to drive its movement. Specifically, when the drive member 200 extends, the clamping space is in an open state; when the drive member 200 retracts, the clamping space becomes a closed state, thereby achieving clamping and releasing of the scroll 230. The drive member 200 can be any one of an electric cylinder, a pneumatic cylinder, or a hydraulic cylinder.

[0049] In one specific embodiment, the upper end of the movable clamp 190 is hinged to the fixed clamp 180, and the lower end of the movable clamp 190 has a recess to form part of the clamping space. This hinged lever structure, in conjunction with the hinge point 220 between the drive member 200 and the fixed clamp 180, and the hinge point 220 between the drive member 200 and the movable clamp 190, can constitute a force-saving lever mechanism, enabling reliable locking of the reel 230 with a smaller driving force. Furthermore, the bottom of the recess can be provided with a slot 240, the lateral width of which is adapted to the thickness of the bearing mounted on the surface of the reel 230, to more stably support and position the reel 230.

[0050] To protect the surface of the spool 230 from damage, the end faces of the fixed clamp 180 and the movable clamp 190 that contact the spool 230 are provided with rounded transitions.

[0051] To perform the picking and placing actions, the conveying unit also includes a height adjustment assembly 140. The clamping assembly 210 is mounted on the limiting guide rail 130 via the height adjustment assembly 140. The height adjustment assembly 140 is used to drive the clamping assembly 210 to move vertically, enabling it to descend to the workstation to grip the roll 230, or to rise to a safe height for transfer.

[0052] The reel replacement device of this utility model realizes fully automatic, high-precision, and non-destructive handling of reels between multiple workstations through the coordination of the upper conveying unit and the lower functional station, effectively solving the problems of low efficiency, pollution risk, and inaccurate positioning of traditional methods.

[0053] The film winding equipment according to the second aspect embodiment includes the roll changing equipment according to the first aspect embodiment. The film winding equipment incorporates the complete roll changing equipment according to the first aspect embodiment in its overall architecture. This allows the film winding equipment to directly call upon and utilize the automated roll handling and changing functions 230 provided by the roll changing equipment when operating its inherent film winding, cutting, and rewinding processes. The roll changing equipment is responsible for automatically circulating between storage, processing, and unloading stations 120, continuously and promptly providing empty rolls and removing full rolls, thereby upgrading the film winding equipment from an intermittent operation mode dependent on manual intervention to a fully automated continuous production mode. The automated changing process avoids the risks of contamination, scratches, or wrinkles to the film material caused by human contact and improper operation. Simultaneously, precise positioning ensures that the position of each new roll is accurate and consistent, thereby guaranteeing the quality stability and roll shape uniformity of the wound product.

[0054] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A reel changing device, characterized in that, include: The machine base includes a storage station, a processing station and a material unloading station located at the lower part of the machine base; A conveying unit is disposed on the upper part of the machine base. The conveying unit includes a guide rail assembly and a clamping assembly. The guide rail assembly includes a limiting guide rail, which extends along the direction from the storage station, processing station to the unloading station. The clamping assembly is slidably disposed on the limiting guide rail and is used to transfer the roll back and forth between the storage station, processing station and unloading station.

2. The reel changing device according to claim 1, characterized in that, The clamping assembly includes a driving member, a fixed clamp, and a movable clamp; the fixed clamp and the movable clamp together form a clamping space for clamping the end of the reel; the driving member is kinetically connected to the movable clamp, and when the driving member extends, the clamping space is in an open state, and when the driving member retracts, the clamping space changes to a closed state.

3. The reel changing device according to claim 2, characterized in that, The upper end of the movable clamp is hinged to the fixed clamp, and the lower end of the movable clamp forms a concave portion to form the clamping space.

4. The reel changing device according to claim 3, characterized in that, The bottom of the recessed portion is provided with a groove, the lateral width of which is adapted to the axial thickness of the bearing mounted on the surface of the reel.

5. A reel replacement device according to claim 2, characterized in that, The end faces of the fixed clamp and the movable clamp that contact the scroll are provided with a rounded transition.

6. The reel changing device according to claim 1, characterized in that, The conveying unit further includes a height adjustment component, and the clamping component is mounted on the limiting guide rail via the height adjustment component; the height adjustment component is used to drive the clamping component to move in the vertical direction.

7. A reel changing device according to claim 1, characterized in that, Two sets of limiting guide rails are provided and symmetrically arranged on both sides of the machine base; each set of limiting guide rails is equipped with the clamping component.

8. A reel changing device according to claim 7, characterized in that, The guide rail assembly also includes a guide rail disposed between the two sets of limiting guide rails; the two clamping assemblies are connected by a connecting rod to achieve synchronous movement, and the middle part of the connecting rod is slidably installed in the guide rail.

9. A reel changing device according to claim 1, characterized in that, Along the extension direction of the limiting guide rail, a first positioning sensor, a second positioning sensor, and a third positioning sensor are respectively provided. The first positioning sensor is set to the storage station, the second positioning sensor is set to the processing station, and the third positioning sensor is set to the unloading station.

10. A film winding device, characterized in that, Includes a reel changing device as described in any one of claims 1-9.

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