Adjustable film roll material rack and adjusting method

Abstract

The invention discloses an adjustable thin film roll material rack and an adjusting method, and relates to the technical field of roll material racks, the adjustable thin film roll material rack comprises a rack bottom plate, and the two sides of the rack bottom plate are symmetrically provided with blocking frame structures used for bearing thin film roll materials; the thin film roll material comprises a roll core and a thin film layer wound on the roll core; the axial length of the thin film layer is smaller than that of the roll core, and the two ends of the roll core protrude to the outer side of the thin film layer. Positioning assemblies used for positioning the two ends of the roll core are evenly distributed in the blocking frame structures on the two sides; the positioning assemblies on the two sides respectively comprise a first positioning part and a second positioning part, and the first positioning part and the second positioning part are respectively used for positioning and fixing roll cores with different diameters; according to the film roll material rack, the film roll materials of different sizes can be stored and transported without producing the film roll materials of different models, the film roll materials can be stored and transported by arranging two sets of different positioning parts in one set of film roll material rack, operation is convenient, the application range is wide, and the production cost is effectively reduced.

Description

Technical Field

[0001] This invention relates to the field of film roll holder technology, and particularly to an adjustable film roll holder and adjustment method. Background Technology

[0002] Optical thin films, as important functional materials, are widely used in display devices, touch screens, optical lenses, and other fields. In the production, storage, and subsequent processing of optical thin films, they are typically wound onto a core to form a film roll, which is then supported and transported using specialized racks. In existing technologies, the racks used to support optical thin film rolls are mostly fixed structures, and the dimensions and spacing of their supporting components are usually designed and manufactured according to the specific outer diameter of the core and the axial length of the film roll.

[0003] These fixed-structure material racks face significant limitations in practical use. First, when the inner or outer diameter of the film roll core changes, or when the axial width (i.e., roll length) of the film roll differs, existing fixed racks are often incompatible. Manufacturers are therefore forced to design, manufacture, and stock multiple specifications of dedicated racks for different core and film roll sizes. This not only directly increases the manufacturing cost of the racks themselves but also leads to higher warehousing management costs, occupies valuable production space, and complicates material management.

[0004] Secondly, in the optical film processing chain, different processes or customers may have different requirements for the specifications of the film rolls. Fixed racks lack flexibility, requiring production lines to be interrupted to change racks when switching between different specifications of film rolls, reducing production efficiency and equipment utilization. In addition, for R&D or small-batch, multi-variety production modes, the rigidity of fixed racks is particularly prominent, making it difficult to meet the production requirements of rapid changeover and flexible scheduling.

[0005] While some general-purpose tooling with limited adjustments exists, it is typically not optimized for the specific requirements of stability, dust protection, scratch resistance, and precise alignment in optical film roll storage. Simple adjustment mechanisms may not guarantee that the roll remains firmly and centered during dynamic loading or movement, easily leading to loosening, eccentricity, or surface damage of the film roll, affecting the product quality of the optical film. Summary of the Invention

[0006] This invention provides an adjustable film roll holder and adjustment method, which can solve the following problems existing in the prior art: Most current optical film roll holders are fixed structures, which cannot accommodate film rolls with different diameter cores or different axial lengths. This necessitates the use of various holder specifications, resulting in high costs and inconvenient management. Furthermore, fixed holders lack flexibility during production changeovers, severely impacting production efficiency and equipment utilization.

[0007] An adjustable film roll rack includes a rack base plate, on both sides of which are symmetrically arranged baffle structures for supporting film rolls. The film roll includes a core and a film layer wound on the core; the axial length of the film layer is less than the axial length of the core, and both ends of the core protrude to the outside of the film layer. The two sides of the baffle structure are evenly provided with positioning components for positioning the two ends of the core; The positioning components on both sides each include a first positioning part and a second positioning part, which are used to position and fix cores of different diameters.

[0008] Preferably, each of the aforementioned baffle structures includes baffles arranged in parallel and symmetrical arrangement on the base plate of the material rack, and a limiting frame is fixedly arranged on the side of the baffles facing each other, with the positioning component arranged between the two limiting frames. The material retainers on both sides are folded and arranged on the bottom plate of the material rack through a folding mechanism.

[0009] Preferably, slide rails are fixedly arranged on the side of the limiting frame facing each other on both sides. The positioning component includes two sets of positioning frames that are slidably arranged in the slide rails on both sides. The two positioning frames are fixedly connected by a connecting frame. The first positioning part includes a first positioning plate fixed to one side of the connecting frame, and the second positioning part includes a second positioning plate fixed to the other side of the connecting frame. Both the first positioning plate and the second positioning plate are set as arc-shaped structures for embedding the core. The arc-shaped openings of the first positioning plate and the second positioning plate are both opened on the side away from the connecting frame. The inner diameters of the arc-shaped structures of the first and second positioning plates are adapted to the outer diameters of different sized cores.

[0010] Preferably, a sealing frame is rotatably mounted on the top of one side of the limiting frame, and the other end of the sealing frame is connected to the other side of the limiting frame through a locking mechanism; The locking mechanism includes a locking sleeve fixed to the end of the sealing frame, and a locking support that fits into the locking sleeve is fixedly arranged on the other side of the limiting frame. Positioning holes for inserting locking pins are opened at corresponding positions on the locking sleeve and the locking support.

[0011] Preferably, limit boxes are fixedly arranged at the four corners of the base plate of the material rack, and the bottom end of each material rack is slidably embedded in the limit groove opened in the limit box.

[0012] Preferably, the limiting box has horizontal guide grooves on both sides of the box body, and the two ends of the horizontal guide grooves are respectively provided with a first vertical guide groove and a second vertical guide groove extending towards the bottom plate of the material rack. The bottom of the baffle is fixedly provided with a guide rod that moves along the guide groove. One end of the guide rod is fixedly provided with a first limiting part, and the other end is slidably provided with a second limiting part. An insertion hole is opened on the guide rod on the side of the second limiting part away from the first limiting part, and a locking pin is inserted into the insertion hole.

[0013] Preferably, each of the limiting boxes has a first slot and a second slot at its opening, the first slot being positioned opposite to the first vertical guide slot, and the second slot being positioned opposite to the second vertical guide slot. The material stop frame is fixedly provided with a card holder for fitting into the card slot.

[0014] Preferably, the folding mechanism includes a reserved slot formed on the limiting box body.

[0015] Preferably, a positioning box is fixedly arranged at the bottom of the limiting box, a positioning end is fixedly arranged at the end of the material rack away from the bottom plate of the material rack, and a stacking groove for embedding the limiting box or the positioning end is opened at the end of the positioning box away from the limiting box.

[0016] An adjustment method for an adjustable film roll holder includes the following steps: The film roll is lifted by a lifting device and then transferred to the base plate of the material rack. When positioning and fixing cores of different diameters, the operator can adjust the first or second positioning part to position the core accordingly.

[0017] This invention provides an adjustable film roll holder and adjustment method, which has the following beneficial effects: 1) In this invention, the diameter of the core varies for different types of film rolls. Based on this, the positioning component of this invention includes a first positioning part and a second positioning part. When it is necessary to position and fix cores of different diameters, the operator can adaptively adjust the first positioning part or the second positioning part to position the core. This invention does not require the production of different types of film rolls to store and transport film rolls of different sizes. It can be achieved by setting two different positioning parts in a set of film roll racks. This is not only convenient to operate and has a wide range of applications, but also effectively reduces production costs. 2) By folding the baffles on the base plate of the material rack, when the film roll needs to be stored and transported, the baffles on both sides can be flipped so that they are perpendicular to the base plate of the material rack, so as to limit and support the film roll. When the film roll does not need to be stored and transported, the baffles can be adjusted to fold towards the base plate of the material rack for easy storage, so as to reduce the space occupied by the baffles on the base plate of the material rack, thereby facilitating the storage of the film roll. 3) During the process of hoisting the core onto the first positioning plate or the second positioning plate, the limiting frames on both sides are in an open state. After the core is embedded into the first positioning plate or the second positioning plate, the sealing frame can be rotated to close the limiting frames on both sides, so that the sealing frame and the first positioning plate or the second positioning plate form a closed space for limiting and fixing the core, which makes the positioning stability of the core higher. 4) This invention can stack the film roll racks that store film rolls in a stacked manner. The positioning end of the top of each rack is embedded in the stacking groove of the positioning box of the upper layer, so that the roll racks of each layer can be mutually locked and limited to ensure the stability of the stacking. Correspondingly, when there is no film roll stored on the roll rack, the rack can be folded and the limiting box of the bottom roll rack can be embedded in the stacking groove of the upper roll rack, thereby achieving the stacking effect. Therefore, for the roll material rack of the present invention, regardless of whether the roll material rack stores film rolls, the operator can make adaptive adjustments to arrange the roll material rack in a stacked manner, thereby reducing the space occupied by the roll material rack, facilitating subsequent storage and transportation, and making it more widely applicable. Attached Figure Description

[0018] Figure 1 A three-dimensional structural diagram of an adjustable film roll holder provided by the present invention. Figure One ; Figure 2 A three-dimensional structural diagram of an adjustable film roll holder provided by the present invention. Figure Two ; Figure 3 This invention provides a schematic diagram of a structure in which an adjustable film roll rack stores film rolls. Figure 4 This invention provides a schematic diagram of an adjustable film roll stacking rack structure. Figure 5 A schematic diagram of the positioning component in an adjustable film roll holder provided by the present invention; Figure 6 A schematic diagram of the stacking groove in an adjustable film roll rack provided by the present invention; Figure 7A schematic diagram of the positioning plate in an adjustable film roll holder provided by the present invention; Figure 8 This is a schematic diagram of the structure of the adjustable film roll material holder when the material stop is folded, as provided by the present invention. Figure 9 This invention provides a schematic diagram of the structure of a limiting box in an adjustable film roll holder; Figure 10 For the present invention Figure 7 A schematic diagram of the enlarged portion at point A in the middle.

[0019] Explanation of reference numerals in the attached figures: 1. Material rack base plate; 2. Baffle structure; 3. Positioning assembly; 4. Film roll; 5. Sealing frame; 101. Limit box; 102. Positioning box; 103. Reserved slot; 104. Stacking slot; 105. First slot; 106. Second slot; 107. Horizontal guide slot; 108. Second vertical guide slot; 109. First vertical guide slot; 201. Material rack; 202. Positioning end; 203 1. Limiting frame; 204. Slide rail; 205. First limiting part; 206. Insertion hole; 207. Locking pin; 208. Second limiting part; 209. Card seat; 210. Guide rod; 301. Positioning frame; 302. Connecting frame; 303. Second positioning plate; 304. First positioning plate; 305. Limiting rod; 401. Core; 501. Locking support; 502. Locking sleeve; 503. Positioning hole. Detailed Implementation

[0020] The specific embodiments of the present invention will be described in detail below, but it should be understood that the scope of protection of the present invention is not limited to the specific embodiments.

[0021] Example 1

[0022] like Figures 1 to 4 As shown in the figure, an adjustable film roll rack provided in this embodiment of the invention includes a rack base plate 1, and baffle structures 2 for supporting film rolls 4 are symmetrically arranged on both sides of the rack base plate 1. Specifically, when storing or transporting film rolls 4, the rack base plate 1 can be moved to a hoisting position, and the film rolls 4 can be lifted by a hoisting device and transferred to the rack base plate 1. The baffle structures 2 on both sides of the rack base plate 1 are used to limit the position of the film rolls 4, thereby achieving the effect of positioning and fixing the film rolls 4 and avoiding instability of the film rolls 4 during storage or transportation.

[0023] In this embodiment, the film roll 4 includes a core 401 and a film layer wound on the core 401; wherein, the axial length of the film layer is less than the axial length of the core 401, and both ends of the core 401 protrude to the outside of the film layer; it can be explained that by setting the axial length of the core 401 to be greater than the axial length of the film layer, when the film roll 4 is subsequently positioned, it is convenient to limit and fix the part of the structure protruding to the outside of the film layer at both ends of the core 401, so as to avoid extrusion damage to the film layer itself.

[0024] As one embodiment of this example, positioning components 3 for positioning the two ends of the core 401 are evenly distributed in the two side baffle structures 2; specifically, during the process of hoisting the film roll 4 onto the base plate 1 of the material rack, the ends of the core 401 can be limited and fixed by the positioning components 3 in the two side baffle structures 2 respectively. It should also be noted that the positioning components 3 on both sides respectively include a first positioning part and a second positioning part. The first positioning part and the second positioning part are used to position and fix the cores 401 of different diameters. Specifically, for different types of film rolls 4, the diameter of their cores 401 is different. Based on this, the positioning components 3 in this embodiment include a first positioning part and a second positioning part. When it is necessary to position and fix the cores 401 of different diameters, the operator can adaptively adjust the first positioning part or the second positioning part to position the cores 401. This embodiment does not require the production of different types of film rolls 4 to realize the storage and transportation of film rolls 4 of different sizes. It can be achieved by setting two different positioning parts in a set of roll racks. This is not only convenient to operate and has a wide range of applications, but also effectively reduces production costs.

[0025] Example 2

[0026] Based on Example 1, please refer to Figure 1 , Figures 5-7 Each set of baffle structures 2 includes baffles 201 arranged in parallel and symmetrical arrangement on the base plate 1 of the material rack. Limiting frames 203 are fixedly arranged on the side of the baffles 201 facing each other. Positioning components 3 are arranged between the two limiting frames 203. The baffles 201 on both sides are folded on the base plate 1 by a folding mechanism. It can be explained that in this embodiment, by folding the baffles 201 on the base plate 1 of the material rack, when the film roll 4 needs to be stored and transported, the baffles 201 on both sides can be flipped so that the baffles 201 on both sides rotate to a perpendicular state with the base plate 1 of the material rack, so as to limit and support the film roll 4. When the film roll 4 does not need to be stored and transported, the baffles 201 can be adjusted to fold towards the base plate 1 of the material rack to reduce the space occupied by the baffles 201 on the base plate 1 of the material rack, thereby facilitating the storage of the roll material rack.

[0027] In this embodiment, slide rails 204 are fixedly arranged on the side of the two limiting frames 203 facing each other. The positioning component 3 includes two sets of positioning frames 301 that are slidably arranged in the two slide rails 204. The two positioning frames 301 are fixedly connected by a connecting frame 302. The first positioning part includes a first positioning plate 304 fixed to one side of the connecting frame 302, and the second positioning part includes a second positioning plate 303 fixed to the other side of the connecting frame 302. Both the first positioning plate 304 and the second positioning plate 303 are set with an arc-shaped structure for embedding the core 401. The first positioning plate 304 is also provided with an arc-shaped structure for embedding the core 401. Both the arc-shaped openings of the 04 and the second positioning plate 303 are located on the side away from the connecting frame 302. It can be explained that when storing and transporting the film roll 4, the roll material rack of this embodiment can first slide the two side positioning frames 301 into the two side slide rails 204. At the same time, the arc-shaped openings of the first positioning plate 304 or the second positioning plate 303 used to embed the core 401 face upward. When placing the film roll 4, the two ends of the core 401 are respectively embedded in the first positioning plate 304 or the second positioning plate 303, thereby achieving the effect of limiting the position of the core 401.

[0028] As one implementation of this embodiment, the inner diameters of the arc-shaped structures of the first positioning plate 304 and the second positioning plate 303 are respectively adapted to the outer diameters of the cores 401 of different sizes. It can be explained that, based on the cores 401 of different sizes, this embodiment sets the first positioning plate 304 and the second positioning plate 303 of different sizes. For the cores 401 of different film rolls 4, the operator can adaptively adjust the arc-shaped opening of the first positioning plate 304 or the second positioning plate 303 to face upwards, so as to embed both ends of the core 401 into the arc-shaped structure. Specifically, when the operator adjusts the opening of the first positioning plate 304 or the second positioning plate 303 to face upward, the positioning component 3 can be taken out from between the two side limit frames 203, rotated 180 degrees and then embedded back into the two side limit frames 203. The operation is very convenient.

[0029] It should also be noted that the two sets of slide rails 204 in this embodiment not only guide the positioning frame 301, but also limit its movement to prevent it from shifting along the sliding direction perpendicular to the slide rails 204. Simultaneously, when the baffle frame 201 is flipped and folded on the base plate 1, the limiting effect of the slide rails 204 on the positioning frame 301 allows the positioning frame 301 and each positioning plate to fold synchronously with the baffle frame 201 (see reference...). Figure 8 ).

[0030] As a further solution in this embodiment, please refer to Figures 5-7When the core 401 is embedded in the first positioning plate 304 or the second positioning plate 303, in order to further limit the core 401 and prevent it from moving out of the arc-shaped opening end in the first positioning plate 304 or the second positioning plate 303, a sealing frame 5 is rotatably arranged on the top of one side of the limiting frame 203. The other end of the sealing frame 5 is connected to the other side of the limiting frame 203 through a locking mechanism. It can be explained that during the process of hoisting the core 401 onto the first positioning plate 304 or the second positioning plate 303, the opening between the two limiting frames 203 is in an open state. After the core 401 is embedded into the first positioning plate 304 or the second positioning plate 303, the sealing frame 5 can be rotated to close the opening on the two limiting frames 203, so that the sealing frame 5 and the first positioning plate 304 or the second positioning plate 303 enclose a closed space to limit and fix the core 401, and the positioning stability of the core 401 is higher.

[0031] Specifically, in order to further improve the positioning stability of the core 401, limiting rods 305 are fixedly arranged on the opposite side of the first positioning plates 304 and the second positioning plates 303 on both sides. It can be explained that after the core 401 on both sides is embedded in the first positioning plate 304 or the second positioning plate 303, the end edge of the core 401 abuts against the limiting rod 305, which can effectively prevent the film roll 4 and the core 401 from shifting axially, and further improve the positioning stability of the film roll 4.

[0032] Specifically, the locking mechanism includes a locking sleeve 502 fixed to the end of the sealing frame 5, and a locking support 501 that fits into the locking sleeve 502 is fixedly arranged on the other side of the limiting frame 203. The locking sleeve 502 and the locking support 501 are respectively provided with positioning holes 503 for inserting locking pins. It can be explained that when the two limiting frames 203 are closed in this embodiment, the sealing frame 5 is rotated so that the locking sleeve 502 at the end of the sealing frame 5 covers the locking support 501. Then, the locking pin can be inserted into the positioning holes 503 of the locking sleeve 502 and the locking support 501 to achieve a fixed connection between the two, so that the sealing frame 5 cannot be reset and rotated. When it is necessary to position the cores 401 of different diameters, the locking pin can be removed and the sealing frame 5 can be flipped. The operation is very convenient.

[0033] Please refer to Figure 1 , Figure 7 as well as Figures 9-10In order to position film rolls 4 with different axial lengths, in this embodiment, limiting boxes 101 are fixedly arranged at the four corners of the base plate 1 of the material rack, and the bottom ends of each baffle 201 are slidably embedded in the limiting grooves opened in the limiting box 101. Specifically, the limiting grooves of the limiting box 101 in this embodiment have a certain length. When the baffle 201 is embedded in the limiting box 101, the position of the baffle 201 in the limiting groove can be adaptively adjusted based on the length of the core 401, thereby realizing the adjustment of the spacing between the baffles 201 on both sides of the base plate 1 of the material rack so as to match the length of the core 401.

[0034] In this embodiment, during the position adjustment process of the baffle 201 within the limiting groove, after the adjustment is completed, in order to fix the position of the baffle 201, please refer to... Figure 3 as well as Figures 9-10 The limiting box 101 has horizontal guide grooves 107 on both sides of its body. The two ends of the horizontal guide grooves 107 are symmetrically provided with a first vertical guide groove 109 and a second vertical guide groove 108 extending towards the bottom plate 1 of the material rack. The bottom of the baffle 201 is fixedly provided with a guide rod 210 that moves along the guide groove. One end of the guide rod 210 is fixedly provided with a first limiting part 205, and the other end is slidably fitted with a second limiting part 208. An insertion hole 206 is provided on the guide rod 210 on the side of the second limiting part 208 away from the first limiting part 205, and a locking pin 207 is inserted into the insertion hole 206. It can be explained that... Yes, for the two side baffles 201, when the guide rods 210 at the bottom of the two side baffles 201 are embedded in the first vertical guide groove 109, the distance between the two side baffles 201 is the largest, which can be used to position the core 401 with the largest length. When the length of the core 401 to be positioned decreases, the guide rods 210 on one or both sides can be simultaneously adjusted to the second vertical guide groove 108 along the horizontal guide groove 107, thereby reducing the distance between the two side baffles 201, so that the positioning component 3 between the two side baffles 201 can position the core 401 with a smaller size, which is convenient for operation.

[0035] In addition, when it is necessary to remove the baffle 201, the locking pin 207 is separated from the guide rod 210 and the second limiting part 208 is removed.

[0036] To further improve the stability of the baffle 201, each limiting box 101 has a first slot 105 and a second slot 106 at its opening. The first slot 105 corresponds to the position of the first vertical guide slot 109, and the second slot 106 corresponds to the position of the second vertical guide slot 108. The baffle 201 is fixedly provided with a mounting base 209 for engaging with the slot. It can be noted that in this embodiment, when adjusting the position of the baffle 201 in the limiting groove, when the guide rod 210 is inserted into the first vertical guide slot 109, the mounting base 209 is inserted into the first slot 105; when the guide rod 210 is inserted into the second vertical guide slot 108, the mounting base 209 is inserted into the second slot 106. By cooperating with the slot, the baffle 201 can be further positioned to prevent the baffle 201 from flipping over.

[0037] As one embodiment of this invention, the folding mechanism includes a reserved slot 103 formed on the body of the limiting box 101; it can be explained that when each of the baffles 201 is folded, the guide rod 210 is first moved into the second vertical guide slot 108, and then the baffle 201 is pulled upward and deflected 90 degrees toward the base plate 1 of the baffle (see reference). Figure 8 This reduces the space occupied by the baffle 201 on the base plate 1 of the material rack, making it easier to store the material later.

[0038] Furthermore, to facilitate the stacking and storage of the roll stock racks, in this embodiment, a positioning box 102 is fixedly provided at the bottom of the limiting box 101, and a positioning end 202 is fixedly provided at the end of the baffle 201 away from the bottom plate 1 of the rack. A stacking groove 104 for embedding the limiting box 101 or the positioning end 202 is provided at the end of the positioning box 102 away from the limiting box 101. It can be noted that, in this embodiment, for ease of storage, the roll stock racks storing the film rolls 4 can be stacked and stored. (See reference...) Figure 4 The positioning end 202 at the top of each baffle 201 is embedded into the stacking slot 104 of the upper positioning box 102, so that each layer of roll material racks can be mutually locked and limited to ensure stacking stability. Correspondingly, when there is no film roll 4 stored on the roll material rack, the baffle 201 can be folded and the limiting box 101 of the bottom roll material rack can be embedded into the stacking slot 104 of the upper roll material rack. See reference. Figure 8 This achieves the effect of stacking and palletizing, further reducing the space occupied by the roll rack during storage, and facilitating subsequent storage and transportation; Therefore, for the roll rack in this embodiment, regardless of whether the roll rack is positioned and stored with film roll 4, the operator can make adaptive adjustments to make the roll rack stacked in a stacking manner, thereby reducing the space occupied by the roll rack, facilitating subsequent storage and transportation, and making it more widely applicable.

[0039] An adjustment method for an adjustable film roll holder includes the following steps: Please refer to Figures 1 to 4 S1. The film roll 4 is lifted by the lifting equipment and transferred to the base plate 1 of the material rack; S2. When positioning and fixing cores 401 of different diameters, the operator shall adjust the first positioning part or the second positioning part to position the core 401 accordingly.

[0040] The above-disclosed embodiments are merely a few specific examples of the present invention. However, the embodiments of the present invention are not limited thereto, and any variations that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. An adjustable film roll holder, characterized in that, Includes a material rack base plate (1), on which two sides are symmetrically arranged baffle structures (2) for carrying film rolls (4). The film roll (4) includes a core (401) and a film layer wound on the core (401); the axial length of the film layer is less than the axial length of the core (401), and the two ends of the core (401) protrude to the outside of the film layer respectively. The two sides of the baffle structure (2) are evenly provided with positioning components (3) for positioning the two ends of the core (401). The positioning components (3) on both sides respectively include a first positioning part and a second positioning part, which are used to position and fix the cores (401) of different diameters.

2. The adjustable film roll holder as described in claim 1, characterized in that, Each of the aforementioned baffle structures (2) includes a baffle (201) arranged in parallel and symmetrical arrangement on the base plate (1) of the material rack. A limiting frame (203) is fixedly arranged on the side of the two baffles (201) that are close to each other. The positioning component (3) is arranged between the two limiting frames (203). The material retainers (201) on both sides are folded and arranged on the bottom plate (1) of the material rack through a folding mechanism.

3. An adjustable film roll holder as described in claim 2, characterized in that, The two sides of the limiting frame (203) are fixedly provided with slide rails (204) on the side facing each other. The positioning component (3) includes two sets of positioning frames (301) that are slidably arranged in the two side slide rails (204). The two side positioning frames (301) are fixedly connected by a connecting frame (302). The first positioning part includes a first positioning plate (304) fixed to one side of the connecting frame (302). The second positioning part includes a second positioning plate (303) fixed to the other side of the connecting frame (302). The first positioning plate (304) and the second positioning plate (303) are both set as arc-shaped structures for embedding the core (401). The arc-shaped openings of the first positioning plate (304) and the second positioning plate (303) are both opened on the side away from the connecting frame (302). The inner diameters of the arc-shaped structures of the first positioning plate (304) and the second positioning plate (303) are respectively adapted to the outer diameters of the cores (401) of different sizes.

4. An adjustable film roll holder as described in claim 2, characterized in that, A sealing frame (5) is rotatably mounted on the top of the limiting frame (203) on one side, and the other end of the sealing frame (5) is connected to the limiting frame (203) on the other side through a locking mechanism; The locking mechanism includes a locking sleeve (502) fixed to the end of the sealing frame (5), and a locking support (501) that fits into the locking sleeve (502) is fixedly arranged on the other side of the limiting frame (203). The corresponding positions on the locking sleeve (502) and the locking support (501) are provided with positioning holes (503) for inserting locking pins.

5. An adjustable film roll holder as described in claim 2, characterized in that, Limiting boxes (101) are fixedly arranged at the four corners of the bottom plate (1) of the material rack, and the bottom end of each baffle (201) is slidably embedded in the limiting groove opened in the limiting box (101).

6. An adjustable film roll holder as described in claim 5, characterized in that, The limiting box (101) has horizontal guide grooves (107) on both sides of the box body. The two ends of the horizontal guide grooves (107) are symmetrically provided with a first vertical guide groove (109) and a second vertical guide groove (108) extending towards the bottom plate (1) of the material rack. The bottom of the baffle (201) is fixedly provided with a guide rod (210) that moves along the guide groove. One end of the guide rod (210) is fixedly provided with a first limiting part (205), and the other end is slidably provided with a second limiting part (208). An insertion hole (206) is opened on the guide rod (210) on the side of the second limiting part (208) away from the first limiting part (205). A locking pin (207) is inserted into the insertion hole (206).

7. An adjustable film roll holder as described in claim 6, characterized in that, Each of the limiting boxes (101) has a first slot (105) and a second slot (106) respectively at its opening. The first slot (105) corresponds to the first vertical guide slot (109), and the second slot (106) corresponds to the second vertical guide slot (108). The baffle (201) is fixedly provided with a card holder (209) for fitting into the card slot.

8. An adjustable film roll holder as described in claim 5, characterized in that, The folding mechanism includes a reserved slot (103) opened on the body of the limiting box (101).

9. An adjustable film roll holder as described in claim 5, characterized in that, The bottom of the limiting box (101) is fixedly provided with a positioning box (102), and the end of the baffle (201) away from the bottom plate (1) of the material rack is fixedly provided with a positioning end (202). The end of the positioning box (102) away from the limiting box (101) is provided with a stacking groove (104) for embedding the limiting box (101) or the positioning end (202).

10. A method for adjusting an adjustable film roll holder as described in any one of claims 1-9, characterized in that, Includes the following steps: After the film roll (4) is lifted by the lifting equipment, it is transferred to the base plate (1) of the material rack; When positioning and fixing cores (401) of different diameters, the operator can adjust the first positioning part or the second positioning part to position the core (401).

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