A film rewinding device

Abstract

The utility model discloses a film unwinding device relates to the technical field of unwinding, and this film unwinding device includes unwinding support, is equipped with two for the unwinding support of film roll support, and is symmetrically arranged, and the top integral type of each unwinding support is equipped with U type bracket, frame body, is equipped with the unwinding roll and unwinding roll in the inboard of frame body, wherein unwinding roll is located the upper end of unwinding roll, the utility model discloses, need to unwind, and the film that is wound on the film roll is placed on two unwinding supports, and make the film roll both ends card in U type bracket, then tear out the film, and after the film is wound over unwinding roll and is wound on unwinding roll, transmission unit drives unwinding roll rotation to the film unwinding, film unwinding, film is stretched through unwinding roll, can bubble is discharged, and the wrinkle is flattened, avoids the film breakage caused by bubble breakage when subsequent processing.

Description

Technical Field

[0001] This utility model specifically relates to the field of film rewinding technology, and more specifically to a film rewinding device. Background Technology

[0002] Rewinding (also known as "re-winding") after film production and winding is a key step in the post-processing of films. Its core purpose is to optimize the roll shape of the film, repair defects that may occur during the production process, and provide a more stable substrate for subsequent processing (such as slitting, printing, lamination, etc.).

[0003] Chinese Patent Application No. 202021095549.0 discloses a rewinding device, comprising: two pairs of rewinding brackets, two rewinding rods, and four roll clamps; the two pairs of rewinding brackets are placed side by side, with each pair of rewinding brackets facing each other; a rewinding rod is placed on each pair of rewinding brackets; a rolled plastic film is fixed on one of the rewinding rods by two roll clamps; a roll is fixed on the other rewinding rod by two roll clamps; the plastic film can then be unwound from a damaged roll onto an empty good roll.

[0004] The rewinding device in the aforementioned patent rewinds on a three-legged support. Once the rewinding is complete, it is difficult to lift the rewinding film roll off the plate; the operation is very time-consuming and labor-intensive. Utility Model Content

[0005] The purpose of this invention is to provide a film rewinding device that uses a telescopic shaft to solve the problem of inconvenient disassembly, and can quickly remove the film roll after rewinding; thus solving the technical problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A film rewinding device, comprising

[0008] Two unwinding supports for film roller support are provided and arranged symmetrically. Each unwinding support has an integral U-shaped bracket on the top.

[0009] The frame body has an unfolding roller and a rewinding roller on its inner side, with the unfolding roller located at the upper end of the rewinding roller;

[0010] The stretching roller and the rewinding roller are composed of the same structure. The rewinding roller has a roller with a cavity at one end, and a telescopic cylinder is slidably connected inside the cavity.

[0011] The telescopic cylinder is fitted with two ball bearings, and the inner sides of the two ball bearings are attached to the outer side of the V-shaped spring buckle.

[0012] Two ball grooves are formed along the axial direction at one end of the roller connected to the telescopic cylinder; a square neck is welded to the outer side of the telescopic cylinder and the end of the roller away from the telescopic cylinder.

[0013] As a further technical solution of this utility model, a spring is also provided inside the cavity, and one end of the spring is in contact with the telescopic cylinder.

[0014] As a further technical solution of this utility model, one end of the stretching roller and the rewinding roller are both inserted into the first square neck shaft, and the first square neck shaft is connected to the frame body through a bearing. The first square neck shaft connected to the rewinding roller is also connected to the transmission unit for transmission.

[0015] As a further technical solution of this utility model, the ends of the stretching roller and the rewinding roller that are away from the first square neck hole shaft are respectively connected to the first flipping mechanism and the second flipping mechanism.

[0016] As a further technical solution of this utility model, the first flipping mechanism and the second flipping mechanism adopt the same structure, both including a second square neck shaft; the second square neck shaft is movably connected to the flipping plate through a bearing; wherein the flipping plate is rotatably connected to the seated bearing through a rotating shaft; the seated bearing is fixed to the frame body.

[0017] As a further technical solution of this utility model, a protruding plate is fixed at the middle position of the outer side of the flipping plate, and the protruding plate is movably connected to the U-shaped movable part through a rotating shaft; then the U-shaped movable part is fixed to the cylinder rod of the telescopic cylinder; the tail end of the telescopic cylinder is movably connected to the fixed bracket through a rotating shaft; the fixed bracket is fixed to the frame body.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] 1. In this utility model, the film to be unwound and wound on the film roller is placed on two unwinding supports, and the two ends of the film roller are locked on the U-shaped brackets. Then the film is pulled out, wrapped around the stretching roller, and wound on the unwinding roller. The transmission unit drives the unwinding roller to rotate, thereby unwinding the film. During unwinding, the film is stretched by the stretching roller, which can expel air bubbles and flatten wrinkles, avoiding film breakage caused by air bubble rupture during subsequent processing.

[0020] 2. In this utility model, after the rewinding roller has finished rewinding, the balls are squeezed inward and force is applied axially at the end of the rewinding roller away from the telescopic cylinder. When the balls move to the inner ball groove, the balls are pushed out by the action of the V-shaped spring buckle. At this time, the rewinding roller is separated from the first square neck hole shaft. Then the rewinding roller can be pulled out from the second square neck hole shaft, thereby realizing the quick disassembly of the rewinding roller.

[0021] 3. In this utility model, after rewinding, the rewinding roller is first removed, the cylinder rod of the telescopic cylinder retracts, and the flipping plate is flipped outward with the cooperation of the protruding plate and the U-shaped movable part, so that the device is in a semi-open state, so as to facilitate the removal of the film roll after rewinding, and to facilitate the forklift or the trolley to push it. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0023] Figure 2 This utility model Figure 1 Another perspective illustration.

[0024] Figure 3 This utility model Figure 2 A partial structural diagram.

[0025] Figure 4 This utility model Figure 3 The main view.

[0026] Figure 5 This is a cross-sectional view of section AA of section 4 in this utility model.

[0027] Figure 6 This is a partially enlarged schematic diagram of component 1 in this utility model.

[0028] Figure 7 This utility model Figure 5 A magnified view of a portion of the image.

[0029] In the figure: 1-unwinding bracket, 2-U-shaped bracket, 3-film roller, 4-unwinding roller, 5-rewinding roller, 6-first flipping mechanism, 7-second flipping mechanism, 8-transmission unit, 9-frame body, 10-fixed bracket, 11-first square neck hole shaft;

[0030] 51-Roller, 52-Ball groove, 53-Spring, 54-Telescopic cylinder, 55-Ball, 56-V-shaped spring clip, 57-Square neck;

[0031] 71-Flipping plate, 72-Bearing with seat, 73-Second square neck shaft, 74-Protruding plate, 75-U-shaped moving part, 76-Telescopic cylinder. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Please see Figure 1-7 In this embodiment of the invention, a film rewinding device includes...

[0034] Two unwinding brackets 1 are provided for supporting the film roller 3 and are arranged symmetrically. Each unwinding bracket 1 has an integral U-shaped bracket 2 on its top.

[0035] The frame body 9 has an extension roller 4 and a rewinding roller 5 on its inner side, wherein the extension roller 4 is located at the upper end of the rewinding roller 5.

[0036] By adopting the above technical solution, the film that needs to be unwound and wound on the film roller 3 is placed on two unwinding supports 1, and the two ends of the film roller 3 are locked on the U-shaped bracket 2. Then the film is pulled out, and the film is wrapped around the stretching roller 4 and wound on the unwinding roller 5.

[0037] More specifically, one end of the stretching roller 4 and the rewinding roller 5 are both inserted into the first square neck shaft 11, and the first square neck shaft 11 is connected to the frame body 9 through a bearing. The first square neck shaft 11 connected to the rewinding roller 5 is also connected to the transmission unit 8.

[0038] By adopting the above technical solution, the transmission unit 8 drives the rewinding roller 5 to rotate, thereby rewinding the film; during rewinding, the film is stretched by the stretching roller 4, which can expel air bubbles and flatten wrinkles, avoiding film breakage caused by air bubble rupture during subsequent processing.

[0039] The stretching roller 4 and the rewinding roller 5 are composed of the same structure. The rewinding roller 5 has a roller 51, one end of which has a cavity, and a telescopic cylinder 54 is slidably connected inside the cavity.

[0040] The telescopic cylinder 54 is internally fitted with two ball bearings 55, and the inner sides of the two ball bearings 55 are attached to the outer side of the V-shaped spring buckle 56.

[0041] Two ball grooves 52 are formed along the axial direction at one end of the roller 51 connected to the telescopic cylinder 54; a square neck 57 is welded to the outer side of the telescopic cylinder 54 and the end of the roller 51 away from the telescopic cylinder 54.

[0042] More specifically, a spring 53 is also provided inside the cavity, and one end of the spring 53 is in contact with the telescopic cylinder 54.

[0043] By adopting the above technical solution, during installation, one end of the stretching roller 4 or the rewinding roller 5 is first inserted and fixed to the first square neck shaft 11. Then, the square neck 57 at the other end is aligned with the second square neck shaft 73, and the ball 55 is pressed inward. Under the elastic force of the spring 53, the telescopic cylinder 54 moves outward. When the ball 55 moves to the outer ball groove 52, the ball 55 is pushed out under the action of the V-shaped spring buckle 56, thereby realizing the snap-fit ​​fixation between the square neck 57 and the second square neck shaft 73; and also realizing the snap-fit ​​fixation between the telescopic cylinder 54 and the roller 51.

[0044] After the rewinding roller 5 has finished rewinding, the ball bearing 55 is squeezed inward, and force is applied axially at the end of the rewinding roller 5 away from the telescopic cylinder 54. When the ball bearing 55 moves to the inner ball bearing groove 52, it is pushed out by the V-shaped spring buckle 56. At this time, the rewinding roller 5 is separated from the first square neck hole shaft 11. Then the rewinding roller 5 can be pulled out from the second square neck hole shaft 73, thus realizing the quick disassembly of the rewinding roller 5.

[0045] In this embodiment, the ends of the stretching roller 4 and the rewinding roller 5 that are away from the first square neck shaft 11 are respectively connected to the first flipping mechanism 6 and the second flipping mechanism 7.

[0046] More specifically, the first flipping mechanism 6 and the second flipping mechanism 7 adopt the same structure, both including a second square neck shaft 73; the second square neck shaft 73 is movably connected to the flipping plate 71 through a bearing; wherein the flipping plate 71 is rotatably connected to the seated bearing 72 through a rotating shaft; the seated bearing 72 is fixed to the frame body 9.

[0047] A protruding plate 74 is fixed at the middle position of the outer side of the flip plate 71. The protruding plate 74 is movably connected to the U-shaped movable part 75 through a rotating shaft. The U-shaped movable part 75 is fixed to the cylinder rod of the telescopic cylinder 76. The tail end of the telescopic cylinder 76 is movably connected to the fixed bracket 10 through a rotating shaft. The fixed bracket 10 is fixed to the frame body 9.

[0048] By adopting the above technical solution, after rewinding, the rewinding roller 5 is first removed, the cylinder rod of the telescopic cylinder 76 retracts, and the flipping plate 71 is flipped outward with the cooperation of the protruding plate 74 and the U-shaped movable part 75, so that the equipment is in a semi-open state, so as to facilitate the removal of the film roll after rewinding, and to facilitate the forklift or the trolley to push it.

[0049] The working principle of this utility model is as follows: the film that needs to be unwound and is wound on the film roller 3 is placed on two unwinding supports 1, and the two ends of the film roller 3 are locked on the U-shaped bracket 2. Then the film is pulled out, and after passing the stretching roller 4, it is wound on the unwinding roller 5. The transmission unit 8 drives the unwinding roller 5 to rotate, thereby unwinding the film. When unwinding, the film is stretched by the stretching roller 4, which can expel air bubbles and flatten wrinkles, avoiding film breakage caused by air bubble rupture during subsequent processing.

[0050] After the rewinding roller 5 has finished rewinding, the ball 55 is squeezed inward, and force is applied axially at the end of the rewinding roller 5 away from the telescopic cylinder 54. When the ball 55 moves to the inner ball groove 52, the ball 55 is pushed out by the action of the V-shaped spring buckle 56. At this time, the rewinding roller 5 is separated from the first square neck hole shaft 11. Then the rewinding roller 5 can be pulled out from the second square neck hole shaft 73, thus realizing the quick disassembly of the rewinding roller 5.

[0051] After rewinding, the rewinding roller 5 is removed, the cylinder rod of the telescopic cylinder 76 retracts, and the flipping plate 71 is flipped outward with the cooperation of the protruding plate 74 and the U-shaped movable part 75, so that the equipment is in a semi-open state, so as to facilitate the removal of the film roll after rewinding, and to facilitate the forklift or the trolley to push it.

[0052] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0053] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A film rewinding device, characterized in that: include Two unwinding brackets (1) are provided for supporting the film roller (3) and are arranged symmetrically. Each unwinding bracket (1) has an integral U-shaped bracket (2) on its top. The frame body (9) has an extension roller (4) and a rewinding roller (5) on its inner side, wherein the extension roller (4) is located at the upper end of the rewinding roller (5); The stretching roller (4) and the rewinding roller (5) are composed of the same structure. The rewinding roller (5) has a roller (51) with a cavity at one end. A telescopic cylinder (54) is slidably connected inside the cavity. The telescopic cylinder (54) is fitted with two ball bearings (55), and the inner sides of the two ball bearings (55) are attached to the outer side of the V-shaped spring buckle (56); The roller (51) is connected to the telescopic cylinder (54) at one end, and two ball grooves (52) are opened along its axial direction; a square neck (57) is welded to the outer side of the telescopic cylinder (54) and the end of the roller (51) away from the telescopic cylinder (54).

2. The film rewinding device according to claim 1, characterized in that: A spring (53) is also provided inside the cavity, and one end of the spring (53) is in contact with the telescopic cylinder (54).

3. The film rewinding device according to claim 1, characterized in that: One end of the stretching roller (4) and the rewinding roller (5) are both inserted into the first square neck shaft (11), and the first square neck shaft (11) is connected to the frame body (9) through bearings. The first square neck shaft (11) connected to the rewinding roller (5) is also connected to the transmission unit (8).

4. The film rewinding device according to claim 1, characterized in that: The ends of the stretching roller (4) and the rewinding roller (5) away from the first square neck hole shaft (11) are respectively connected to the first flipping mechanism (6) and the second flipping mechanism (7).

5. The film rewinding device according to claim 4, characterized in that: The first flipping mechanism (6) and the second flipping mechanism (7) are composed of the same structure, both including a second square neck hole shaft (73); the second square neck hole shaft (73) and the flipping plate (71) are movably connected by a bearing; wherein the flipping plate (71) is rotatably connected to the seated bearing (72) by a rotating shaft; the seated bearing (72) is fixed to the frame body (9).

6. The film rewinding device according to claim 5, characterized in that: A protruding plate (74) is fixed at the middle position of the outer side of the flip plate (71). The protruding plate (74) is movably connected to the U-shaped movable part (75) through a rotating shaft. The U-shaped movable part (75) is fixed to the cylinder rod of the telescopic cylinder (76). The tail end of the telescopic cylinder (76) is movably connected to the fixed bracket (10) through a rotating shaft. The fixed bracket (10) is fixed to the frame body (9).

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