Winding film and winding sleeve thereof

Abstract

The utility model discloses a wrapping film and a winding sleeve thereof, and relates to the technical field of wrapping films, the wrapping film comprises a cylinder body, and annular blocks are installed on the side portions, away from each other, of the cylinder body. In the use process, the barrel is inserted into an external rotating shaft, then a circular plate is rotated, the circular plate rotates to enable a bidirectional lead screw to rotate, the bidirectional lead screw rotates to enable two annular plates to move through threaded blocks, the two annular plates move to enable a plurality of L-shaped sliding blocks to move through pull ropes, and the L-shaped sliding blocks enable a plurality of mounting plates to move; the multiple mounting plates move to enable the four arc-shaped plates to be close to one another, the four arc-shaped plates are close to one another to enable the anti-skid protruding blocks to be close to one another, then the anti-skid protruding blocks make contact with and abut against rotating shafts of different sizes from the two ends, and therefore the barrel can be fixedly installed on the rotating shafts of various sizes. The situation that the rotating shaft is too large or too small, and subsequent winding and unwinding of the winding film body by the barrel are affected is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to goods transportation technical field, especially relates to a winding film and its winding sleeve. BACKGROUND

[0002] Winding film, also called stretch film, heat shrink film, is a very common packaging material, used for protecting and fixing goods, preventing from being influenced and damaged by external environment, and winding film is generally fixed by winding drum.

[0003] In the prior art, the patent with publication number CN217996377U discloses a winding drum for film production, which can quickly fix the film and prevent the film from falling off during the rotation of the winding drum. However, when the winding drum is used for winding and unwinding the film, it is usually inserted into different shafts outside for winding and unwinding. Different types of shafts have different diameters. When the diameter of the shaft is larger than the inner diameter of the winding drum, the winding drum cannot be inserted into the shaft. When the diameter of the shaft is smaller than the inner diameter of the winding drum, the shaft cannot make the winding drum rotate well, which affects the winding and unwinding of the film and is not convenient to use. To overcome the shortcomings of the prior art, the utility model discloses a winding film and its winding sleeve to solve the above problems. UTILITY MODEL CONTENTS

[0004] The purpose of the present application is to provide a winding film and its winding sleeve to solve the problems raised in the background art.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solution: a winding sleeve, comprising a drum body, the drum body is provided with an annular block on each side thereof, a winding film body is wound on the drum body, four sliding grooves are formed on each side of the two annular blocks, two sliding rods are installed on the opposite inner walls of each sliding groove, an L-shaped sliding block is slidably arranged on each two matching sliding rods, an installation plate is detachably installed on each side of each L-shaped sliding block, an arc-shaped plate is installed on each side of each two matching installation plates, a plurality of anti-slip protrusions are fixedly arranged on each side of each arc-shaped plate, a driving mechanism is arranged on the drum body to move the four arc-shaped plates, and the driving mechanism is matched with the L-shaped sliding block.

[0006] Preferably, the driving mechanism includes two movable grooves formed on the inner wall of the cylinder. A bidirectional lead screw is rotatably mounted on the opposing inner walls of the two movable grooves. The inner walls of the adjacent sides of the two movable grooves are provided with clearance holes adapted to the bidirectional lead screw. Movable holes are provided on the sides of the cylinder and one of the annular blocks. One end of the bidirectional lead screw passes through the two movable holes and is fitted with a circular plate. Two threaded blocks are threaded onto the bidirectional lead screw. Annular plates are installed on the sides of the two threaded blocks. Four pull ropes are installed on the sides of the two annular plates. Rope holes adapted to the pull ropes are provided on the inner walls of the two annular blocks. The other ends of the pull ropes are respectively installed on the inner walls of the sides of the multiple L-shaped sliders. Elastic units are provided on the multiple L-shaped sliders.

[0007] Preferably, the elastic unit includes a spring mounted on the inner wall of the side portion of the L-shaped slider, and the other end of the spring is mounted on the inner wall of the side portion of the groove.

[0008] Preferably, a limiting threaded hole is provided on the side of the circular plate, and a limiting bolt is threaded onto the limiting threaded hole, the end of the limiting bolt abutting against the side of one of the annular blocks.

[0009] Preferably, the mounting plate has a mounting hole on its side, a fixing bolt is movably mounted in the mounting hole, and the L-shaped slider has a fixing threaded hole on its side, the end of the fixing bolt is threaded into the fixing threaded hole.

[0010] Preferably, each of the two annular blocks has two fixing grooves on its side, and a gripping plate is installed on the top inner wall of each of the two fixing grooves.

[0011] An epidermal wrapping film includes an epidermal wrapping film body, which comprises an epidermal wrapping film base layer, a mesh fabric layer, a moisture-proof layer, a wear-resistant layer, an adhesive layer, a flame-retardant layer, an insulating layer, and a reinforcing layer.

[0012] In summary, the technical effects and advantages of this utility model are as follows:

[0013] 1. In this utility model, during use, the cylinder is first inserted into the external rotating shaft. Then, the circular plate is rotated. The rotation of the circular plate causes the bidirectional lead screw to rotate. The rotation of the bidirectional lead screw causes the two annular plates to move through the threaded block. The movement of the two annular plates causes multiple L-shaped sliders to move through the pull rope. The multiple L-shaped sliders cause multiple mounting plates to move. The movement of the multiple mounting plates causes four arc-shaped plates to move closer to each other. The four arc-shaped plates moving closer to each other cause the anti-slip protrusions to move closer to each other. Thus, the anti-slip protrusions from both ends come into contact with and abut against rotating shafts of different sizes. This allows the cylinder to be installed and fixed on rotating shafts of various sizes, avoiding the impact of rotating shafts that are too large or too small on the subsequent opening and closing of the wrapping film body.

[0014] 2. In this utility model, by setting a spring, when the pull rope does not pull the L-shaped slider, the L-shaped slider is reset under the action of the spring, thereby releasing the connection between the cylinder and the rotating shaft. By setting a fixing bolt, it is easy to fix the circular plate, and avoid the circular plate rotating itself after fixing, which would affect the installation and fixation. It is also easy to replace the arc plate, and avoid damage to the arc plate and anti-slip protrusions after long-term use, which would affect the installation and fixation. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a three-dimensional structural diagram from a first perspective in an embodiment of the present utility model;

[0017] Figure 2 This is a three-dimensional structural diagram from a second perspective in an embodiment of the present utility model;

[0018] Figure 3 for Figure 2 Enlarged structural diagram at point A in the middle;

[0019] Figure 4 This is a three-dimensional structural schematic diagram with partial cross-section from a first perspective in an embodiment of this utility model;

[0020] Figure 5 for Figure 4 A magnified schematic diagram of the central part of the structure.

[0021] In the diagram: 1. Stretch film body; 2. Cylinder; 3. Annular block; 4. Slide rod; 5. L-shaped slider; 6. Mounting plate; 7. Fixing bolt; 8. Arc plate; 9. Two-way lead screw; 10. Circular plate; 11. Threaded block; 12. Annular plate; 13. Pull rope; 14. Spring; 15. Limiting bolt; 16. Anti-slip protrusion; 17. Fixing groove; 18. Grip plate. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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.

[0023] Example: Reference Figures 1-4 The winding sleeve shown includes a cylinder 2. Ring blocks 3 are installed on the mutually distant sides of the cylinder 2. A winding film body 1 is wound onto the cylinder 2. Four sliding grooves are provided on the sides of each of the two ring blocks 3. Two sliding rods 4 are installed on the opposing inner walls of the multiple sliding grooves. An L-shaped slider 5 is slidably mounted on each pair of matching sliding rods 4. Mounting plates 6 are detachably mounted on the sides of the multiple L-shaped sliders 5. An arc-shaped plate 8 is mounted on the sides of each pair of matching mounting plates 6. Multiple anti-slip protrusions 16 are fixed to the sides of the four arc-shaped plates 8. A driving mechanism is provided on the cylinder 2 to move the four arc-shaped plates 8. The driving mechanism is installed in conjunction with the L-shaped sliders 5.

[0024] With the above structure, in use, the cylinder 2 is first inserted into the external rotating shaft. Then, the multiple L-shaped sliders 5 are moved horizontally by the drive mechanism and the slide bar. The movement of the multiple L-shaped sliders 5 will cause the multiple mounting plates 6 to move. The movement of the multiple mounting plates 6 will cause the four arc plates 8 to move closer or further away from each other. The four arc plates 8 moving closer will cause the multiple anti-slip protrusions 16 to move closer to each other, thereby causing the anti-slip protrusions 16 to contact and abut against the peripheral outer wall of rotating shafts of different sizes. This allows the cylinder 2 to be installed and fixed on rotating shafts of various sizes, avoiding the impact of the rotating shaft being too large or too small on the subsequent opening and closing of the wrapping film body 1 by the cylinder 2.

[0025] like Figures 1-4 As shown, the drive mechanism includes two movable slots on the inner walls of the cylinder 2. A bidirectional lead screw 9 is rotatably mounted on the inner walls of the two movable slots. The inner walls of the two movable slots that are close to each other are provided with clearance holes adapted to the bidirectional lead screw 9. Movable holes are provided on the sides of the cylinder 2 and one of the annular blocks 3. One end of the bidirectional lead screw 9 passes through the two movable holes and is fitted with a circular plate 10. Two threaded blocks 11 are threaded onto the bidirectional lead screw 9. Annular plates 12 are installed on the sides of the two threaded blocks 11. Four [unclear characters] are installed on the sides of the two annular plates 12. The pull rope 13 and the inner walls of the two annular blocks 3 are provided with rope holes that are adapted to the pull rope 13. The other ends of the multiple pull ropes 13 are respectively installed on the inner walls of the side of multiple L-shaped sliders 5. Each of the multiple L-shaped sliders 5 is provided with an elastic unit. The elastic unit includes a spring 14 installed on the inner wall of the side of the L-shaped slider 5. The other end of the spring 14 is installed on the inner wall of the side of the slide groove. The advantage of this arrangement is that, through the arrangement of the bidirectional screw 9, the circular plate 10, the threaded block 11, the annular plate 12, the pull rope 13 and the spring 14, it is easy to make the four arc-shaped plates 8 move away from each other or move closer together.

[0026] Specifically, the rotation of the circular plate 10 causes the bidirectional lead screw 9 to rotate, which in turn causes the two threaded blocks 11 to move. The two threaded blocks 11 then cause the two annular plates 12 to move, which in turn pulls the pull rope 13. The pull rope 13, under pressure, pulls the L-shaped slider 5. The movement of the L-shaped slider 5 causes the arc plate 8 to move, which in turn causes the anti-slip protrusion 16 to move. This allows the anti-slip protrusion 16 to contact shafts of different sizes from both ends, thus enabling the cylinder 2 to be mounted and fixed on shafts of various sizes. When the fixation is released, the annular plate 12 returns to its original position. The return of the annular plate 12 cancels the pull on the pull rope 13. At this time, the L-shaped slider 5 returns to its original position under the action of the spring 14. The movement of the L-shaped slider 5 causes the arc plate 8 to return to its original position, thereby releasing the fixation on the shaft and canceling the connection between the cylinder 2 and the shaft.

[0027] like Figure 3 As shown, a limiting threaded hole is provided on the side of the circular plate 10, and a limiting bolt 15 is threadedly installed on the limiting threaded hole. The end of the limiting bolt 15 abuts against the side of one of the annular blocks 3. A mounting hole is provided on the side of the mounting plate 6, and a fixing bolt 7 is movably installed on the mounting hole. A fixing threaded hole is provided on the side of the L-shaped slider 5, and the end of the fixing bolt 7 is threadedly installed in the fixing threaded hole. The advantage of this setting is that the fixing bolt 15 facilitates the fixing of the circular plate 10, and avoids the circular plate 10 rotating itself after fixing, which would affect the installation and fixation. It also facilitates the replacement of the arc plate 8 and avoids damage to the arc plate 8 and anti-slip protrusion 16 after long-term use, which would affect the installation and fixation.

[0028] like Figure 1 As shown, two fixing grooves 17 are opened on the side of each of the two annular blocks 3, and a grip plate 18 is installed on the top inner wall of each of the two fixing grooves 17. The advantage of this arrangement is that, through the setting of the fixing grooves 17 and the grip plate 18, the grip plate 18 can be held for transportation during handling, making it easier to leverage the force.

[0029] like Figure 1 As shown, a stretch film includes a stretch film body 1, which includes a stretch film base layer, a mesh fabric layer, a moisture-proof layer, a wear-resistant layer, an adhesive layer, a flame-retardant layer, an insulating layer, and a reinforcing layer.

[0030] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A winding sleeve, comprising a cylinder body (2), characterized in that: Annular blocks (3) are installed on the mutually distant sides of the cylinder (2). The wrapping film body (1) is wound onto the cylinder (2). Four sliding grooves are opened on the sides of the two annular blocks (3). Two sliding rods (4) are installed on the inner walls of the multiple sliding grooves. An L-shaped slider (5) is slidably sleeved on each pair of matching sliding rods (4). Mounting plates (6) are detachably installed on the sides of the multiple L-shaped sliders (5). An arc plate (8) is installed on the sides of each pair of matching mounting plates (6). Multiple anti-slip protrusions (16) are fixed on the sides of the four arc plates (8). A driving mechanism is provided on the cylinder (2) to move the four arc plates (8). The driving mechanism is installed in conjunction with the L-shaped sliders (5).

2. The winding sleeve according to claim 1, characterized in that: The driving mechanism includes two movable slots formed on the inner wall of the cylindrical body (2). A bidirectional lead screw (9) is rotatably mounted on the inner walls of the two movable slots. The inner walls of the two movable slots that are close to each other are provided with clearance holes adapted to the bidirectional lead screw (9). Movable holes are provided on the sides of the cylindrical body (2) and one of the annular blocks (3). One end of the bidirectional lead screw (9) passes through the two movable holes in sequence and is mounted with a circular plate (10). Two threaded blocks (11) are threaded onto the rod (9). Annular plates (12) are installed on the sides of the two threaded blocks (11). Four pull ropes (13) are installed on the sides of the two annular plates (12). Rope holes adapted to the pull ropes (13) are opened on the inner walls of the two annular blocks (3). The other ends of the multiple pull ropes (13) are respectively installed on the inner walls of the sides of the multiple L-shaped sliders (5). Elastic units are provided on the multiple L-shaped sliders (5).

3. A winding sleeve according to claim 2, characterized in that: The elastic unit includes a spring (14) mounted on the inner wall of the side of the L-shaped slider (5), and the other end of the spring (14) is mounted on the inner wall of the side of the groove.

4. A winding sleeve according to claim 2, characterized in that: The circular plate (10) has a limiting threaded hole on its side, and a limiting bolt (15) is threaded onto the limiting threaded hole. The end of the limiting bolt (15) abuts against the side of one of the annular blocks (3).

5. A winding sleeve according to claim 1, characterized in that: The mounting plate (6) has a mounting hole on its side, and a fixing bolt (7) is movably mounted on the mounting hole. The L-shaped slider (5) has a fixing thread hole on its side, and the end of the fixing bolt (7) is threaded into the fixing thread hole.

6. A winding sleeve according to claim 1, characterized in that: Two fixing grooves (17) are provided on the sides of the two annular blocks (3), and a gripping plate (18) is installed on the top inner wall of the two fixing grooves (17).

7. A stretch film, comprising a stretch film body (1), characterized in that: The stretch film body (1) includes a stretch film base layer, a mesh fabric layer, a moisture-proof layer, a wear-resistant layer, an adhesive layer, a flame-retardant layer, an insulating layer, and a reinforcing layer.

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