Winding drum for plastic film production

Abstract

The utility model particularly relates to the technical field of plastic film production, and discloses a winding drum for plastic film production, which comprises a drum body, a communicating groove is arranged on the surface of the drum body, arc-shaped grooves are arranged on two side walls of the communicating groove, arc-shaped plates are connected inside the arc-shaped grooves in a sliding mode, and the arc-shaped plates are connected with the communicating groove in a sliding mode. Sliding blocks are slidably connected into the portions, close to the two ends of the arc-shaped plate, of the arc-shaped groove correspondingly, the two sliding blocks are symmetrically distributed, and torsional springs are fixedly connected to the side walls of the sliding blocks correspondingly. The clamping blocks, the sliding blocks, the torsional spring shifting pieces and the second spring are arranged, the two sliding blocks are both in a T shape and are matched with the inner size of the arc-shaped groove and used for supporting and limiting, the two clamping blocks can be driven to rotate around the torsional spring by shifting the two shifting pieces, the two corners of a film can be conveniently and sequentially clamped into the two clamping blocks, and the clamping effect is good. And when the two groups of clamping blocks clamp the corner of the film, the pulling force of the spring II acts on the side wall of the sliding block, so that the film can be stretched flatly, and the clamping efficiency of the film is improved.

Description

Technical Field

[0001] This utility model belongs to the field of plastic film production technology, and in particular relates to a roll for plastic film production. Background Technology

[0002] In the field of film production, after the film is formed, it needs to be wound onto a roll. The ends of the film are usually fixed to the surface of the roll with adhesive. By rotating the roll, the film is wound onto the roll, which makes it easy to rewind the film.

[0003] Existing technical solutions, such as those disclosed in CN217996377U, disclose a film production roll. The roll includes a cylindrical body with a through groove formed along its length on its surface. An arc-shaped groove is formed inside the cylindrical body, communicating with the through groove. An arc-shaped pressure plate is rotatably disposed within the groove. First arc-shaped grooves communicating with the groove are formed on both end faces of the cylindrical body. Push rods are fixed to both sides of the arc-shaped pressure plate, with at least a portion of the push rods extending to the outside of the cylindrical body. This solves the problem of long drying times and easy detachment when using adhesive to fix the film to the roll.

[0004] The above-mentioned technical solution has the following technical problems: When this kind of plastic film production roll is used, due to the soft texture of the film and the narrow space of the through groove, the film may wrinkle when it is inserted into the through groove. Operators need to manually smooth the film, which reduces the efficiency of the film being attached to the roll. Utility Model Content

[0005] This utility model provides a roll for producing plastic film, aiming to solve the problem that when using this type of plastic film production roll, due to the soft texture of the film and the narrow space of the through groove, wrinkles may occur when the film is inserted into the through groove, requiring the operator to manually smooth the film, thereby reducing the efficiency of film clamping on the roll.

[0006] This utility model is implemented as follows: a roll for producing plastic film includes a cylindrical body. A connecting groove is formed on the surface of the cylindrical body. Arc-shaped grooves are formed on the two side walls of the connecting groove. An arc-shaped plate is slidably connected inside the arc-shaped groove. A slider is slidably connected inside the arc-shaped groove near the two ends of the arc-shaped plate. The two sliders are symmetrically distributed. A torsion spring is fixedly connected to the side wall of each slider. A locking block is provided on the two side walls of each torsion spring. A lever is fixedly connected to the top of each locking block. A second spring is fixedly connected to the side wall of each slider away from the torsion spring. The other end of each second spring is fixed to the inner side wall of the connecting groove.

[0007] Preferably, both ends of the cylinder are provided with annular baffles, which are symmetrically distributed in a circular shape to facilitate the restriction of displacement of the film sidewalls.

[0008] Preferably, each of the annular baffles has a sleeve fixedly connected to its side wall away from the cylinder. The sleeve is threaded through the annular baffle and connected to the outer surface of the cylinder, which improves the stability of the annular baffle installation.

[0009] Preferably, the arc-shaped plate is convex and matches the internal dimensions of the arc-shaped groove. A push rod is fixedly connected to the side wall of the arc-shaped plate. The push rod is cylindrical and penetrates the side wall of the cylinder to facilitate moving the arc-shaped plate.

[0010] Preferably, a slot is provided on the side wall of the sleeve near the push rod. The slot has the same curvature as the arc groove. One end of the push rod passes through the interior of the slot to facilitate the movement of the push rod.

[0011] Preferably, a plurality of springs are fixedly connected at equal intervals at the bottom end of the arc-shaped plate, and the other end of each spring is fixed to the inner sidewall of the arc-shaped groove, which improves the stability of the film snap-fit.

[0012] Compared with the prior art, the embodiments of this application have the following main advantages:

[0013] Firstly, the device is equipped with locking blocks, sliders, torsion spring paddles, and a second spring. Both sliders are T-shaped and their internal dimensions are adapted to the arc-shaped grooves to provide support and limit. By moving the two paddles, the two locking blocks can be rotated around the torsion springs, making it easy to lock the two corners of the film into the inside of the two locking blocks in sequence. When the two sets of locking blocks clamp the corners of the film, the tension of the second spring acts on the side wall of the slider, which can stretch the film flat, thereby improving the efficiency of film locking. Attached Figure Description

[0014] Figure 1 This is a front view structural diagram of the present invention.

[0015] Figure 2 This is a side view sectional structural diagram of the present invention.

[0016] Figure 3 This is a frontal cross-sectional view of the present invention.

[0017] Figure 4 For the present utility model Figure 3 Enlarged structural diagram at point A in the middle.

[0018] The attached diagram is labeled as follows: 1. Cylinder; 2. Connecting groove; 3. Locking block; 4. Annular baffle; 5. Sleeve; 6. Groove one; 7. Push rod; 8. Arc groove; 9. Slider; 10. Torsion spring; 11. Paddle; 12. Arc plate; 13. Spring one; 14. Spring two. Detailed Implementation

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, not to describe a particular order.

[0020] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0021] Please see Figure 1-4The present invention provides an embodiment of a plastic film production roll, comprising a cylindrical body 1 made of stainless steel for easy film winding. A connecting groove 2 is provided on the surface of the cylindrical body 1. Annular baffles 4 are provided at both ends of the cylindrical body 1, symmetrically distributed in annular shape to restrict the displacement of the film sidewalls. Sleeves 5 are welded and fixed to the sidewalls of the annular baffles 4 away from the cylindrical body 1, threaded through the annular baffles 4 and attached to the outer surface of the cylindrical body 1, improving the stability of the annular baffles 4 installation. Arc-shaped grooves 8 are provided on the two sidewalls of the connecting groove 2, with an arc-shaped plate 12 slidably connected inside the arc-shaped grooves 8. The arc-shaped plate 12 is convex and matches the internal dimensions of the arc-shaped grooves 8, facilitating its sliding. When one end of the film is inserted into the connecting groove 2, moving the arc-shaped plate 12 restricts the displacement of the film end, improving the stability during film winding and preventing film detachment. The arc-shaped grooves 8 are close to the arc-shaped plate 12. Both ends are internally connected to sliders 9, which are symmetrically distributed. Both sliders 9 are T-shaped and their internal dimensions match the arc-shaped groove 8, improving the stability of the slider 9's movement. Torsion springs 10 are welded to the side walls of each slider 9. Locking blocks 3 are welded to the two side walls of each torsion spring 10. The four locking blocks 3 are divided into two groups, which are symmetrically distributed. A lever 11 is fixedly connected to the top of each locking block 3 for easy movement via the torsion springs. Rotation of spring 10 can drive two locking blocks 3 to move synchronously. The two sets of locking blocks 3 can clamp the corners of one end of the film in sequence. Springs 14 are fixedly connected to the side wall of slider 9 away from torsion spring 10. The other end of springs 14 is fixed to the inner side wall of the connecting groove 2. The two corners of one end of the film are clamped in sequence between the two sets of locking blocks 3. When the two sets of locking blocks 3 clamp the corners of the film, the tension of springs 14 acts on the side wall of slider 9, which can stretch the film flat, thereby improving the efficiency of film clamping.

[0022] A push rod 7 is fixedly connected to the side wall of the arc plate 12. The push rod 7 is cylindrical and penetrates the side wall of the cylinder 1, making it easy to move the arc plate 12. A slot 6 is opened on the side wall of the sleeve 5 near the push rod 7. The slot 6 has the same curvature as the arc groove 8. One end of the push rod 7 penetrates the inside of the slot 6, making it easy to move the push rod 7. By moving the push rod 7, the arc plate 12 can be driven to slide inside the arc groove 8. Several springs 13 are fixedly connected at equal intervals at the bottom of the arc plate 12. The other end of each spring 13 is fixed to the inner side wall of the arc groove 8. The elastic force of the springs 13 acts on the side wall of the arc plate 12, which can increase the pressure when the arc plate 12 clamps the film, improve the stability of the film clamping, and prevent the film from sliding out of the interior of the connecting groove 2.

[0023] Working Principle: When using this type of plastic film production roll, the operator first inserts one end of the film into the connecting groove 2. By moving the two levers 11, the operator can drive the two locking blocks 3 to rotate around the torsion spring 10, facilitating the locking of one end of the film between the two locking blocks 3, thereby clamping the corner of the film for limiting. When the two sets of locking blocks 3 clamp the corner of the film, the tension of the second spring 14 acts on the side wall of the slider 9, which can stretch the film flat, thereby improving the film locking efficiency. Both sliders 9 are T-shaped and adapted to the internal dimensions of the arc groove 8, thereby improving the movement of the two sliders 9. To ensure stability, push rod 7 is fixed to the side wall of arc plate 12 and passes through the inside of the protrusion slot 6 of cylinder 1. By moving push rod 7, arc plate 12 can slide inside arc groove 8. The arc plate 12 is convex in shape to avoid obstructing the locking block 3 and slider 9. Moreover, the external dimensions of arc plate 12 are adapted to the internal dimensions of arc groove 8, which improves the stability of arc plate 12 sliding. By releasing push rod 7, the elastic force of spring 13 acts on the bottom end of arc plate 12, causing the other end of arc plate 12 to engage with the limiting film, preventing the film from sliding out of the inside of the connecting groove 2, thereby realizing the engagement of the film.

[0024] Secondly, the two annular baffles 4 are symmetrically distributed in annular shape, which can limit the displacement of the film edge and improve the stability of the film during winding.

[0025] It should be noted that for the aforementioned embodiments, for simplicity of description, they are all expressed as a series of action combinations. However, those skilled in the art should be aware that the present invention is not limited by the order of the actions described, because according to the present invention, certain steps may be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in this specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present invention.

[0026] In the several embodiments provided in this application, it should be understood that the disclosed devices can be implemented in other ways. For example, the device embodiments described above are merely illustrative, such as the division of the above-mentioned units. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the coupling or communication connection between each other shown or discussed can be through some interfaces, and the indirect coupling or communication connection between devices or units can be in the form of telecommunications or other forms.

[0027] The units described above as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0028] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Although this utility model has been described in detail with reference to the above embodiments, those skilled in the art can still combine, add, delete, or otherwise adjust the features of the various embodiments of this utility model according to the circumstances without conflict or creative effort, thereby obtaining different technical solutions that do not fundamentally depart from the concept of this utility model. These technical solutions are also within the scope of protection of this utility model.

Claims

1. A roll for producing plastic film, characterized in that: The invention comprises a cylinder (1): a connecting groove (2) is provided on the surface of the cylinder (1); arc grooves (8) are provided on two side walls of the connecting groove (2); an arc plate (12) is slidably connected to the inside of the arc groove (8); sliders (9) are slidably connected to the inside of the two ends of the arc groove (8) close to the arc plate (12); the two sliders (9) are symmetrically distributed; torsion springs (10) are fixedly connected to the side walls of the sliders (9); blocks (3) are provided on the two side walls of the two torsion springs (10); a paddle (11) is fixedly connected to the top of the blocks (3); a second spring (14) is fixedly connected to the side wall of the slider (9) away from the torsion spring (10); the other end of the second spring (14) is fixed to the inner side wall of the connecting groove (2).

2. A roll for producing plastic film according to claim 1, characterized in that: Annular baffles (4) are provided at both ends of the cylinder (1), and the annular baffles (4) are annular and symmetrically distributed.

3. A roll for producing plastic film according to claim 2, characterized in that: A sleeve (5) is fixedly connected to the side wall of the annular baffle (4) away from the cylinder (1); the sleeve (5) passes through the annular baffle (4) and is threadedly connected to the outer surface of the cylinder (1).

4. A roll for producing plastic film according to claim 3, characterized in that: The arc-shaped plate (12) is in a convex shape and is adapted to the internal dimensions of the arc-shaped groove (8). A push rod (7) is fixedly connected to the side wall of the arc-shaped plate (12). The push rod (7) is in a cylindrical shape and penetrates the side wall of the cylinder (1).

5. A roll for producing plastic film according to claim 3, characterized in that: A slot one (6) is provided on the side wall of the sleeve body (5) close to the push rod (7), the slot one (6) has the same curvature as the arc groove (8), and one end of the push rod (7) passes through the interior of the slot one (6).

6. A roll for producing plastic film according to claim 4, characterized in that: A plurality of springs (13) are fixedly connected at equal intervals at the bottom end of the arc-shaped plate (12), and the other ends of the springs (13) are fixed on the inner side wall of the arc-shaped groove (8).

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