Winding film winding device

Abstract

The invention relates to the technical field of wrapping film winding, in particular to a wrapping film winding device which comprises a base, a conveying assembly, an impacting piece, a winding assembly and a control piece, the conveying assembly comprises a conveying roller, and the winding assembly comprises a support, a clamping piece and a first driving piece. The clamping piece comprises a rotating disc, a center rod, a plurality of expansion rods and an elastic piece, a sliding groove is formed in the rotating disc, the elastic piece is arranged in the sliding groove, through the synergistic effect of all the components, self-adaption, rapid and firm clamping of paper tubes with different inner diameters is achieved, and therefore the roll changing efficiency is greatly improved. And meanwhile, the transmission speed of the whole film is adjusted through the controller and the impact piece arranged between the conveying path and the winding path, active physical shaking and tidying are conducted, the internal stress of the film is effectively released, and the whole device cooperatively achieves efficient and high-quality winding film winding operation.

Description

Technical Field

[0001] This invention relates to the field of stretch film winding technology, and more specifically to a stretch film winding device. Background Technology

[0002] Stretch film is a key material widely used in logistics, warehousing, and food packaging. On its production line, the winding process is the final step in neatly and tightly winding the cast or blown film onto a paper tube, which directly determines the quality, storage stability, and subsequent use efficiency of the finished film roll.

[0003] Currently, the inner diameter specifications of finished stretch film products on the market vary widely. Traditional winding devices mostly use winding shafts with a fixed diameter. When it is necessary to change to paper tubes with different inner diameters, the machine must be stopped and the entire winding shaft or an additional suitable sleeve must be replaced. This process is time-consuming and labor-intensive, severely restricting the continuous operation efficiency of the production line. Although some equipment has attempted to use expandable structures such as air shafts, their structures are complex, maintenance costs are high, and reliability is difficult to guarantee under frequent expansion and contraction. In addition, stretch film has internal stress during high-speed production. If it is directly wound without effective flattening and conditioning, it is very easy to cause defects such as uneven film roll tension, wrinkles or bulging on the surface, affecting the quality of the finished product. The commonly used fixed guide rods or passive rollers have limited conditioning effects and may scratch the film surface. Summary of the Invention

[0004] The purpose of this invention is to solve the problems of low roll-changing efficiency caused by the fixed size of the winding shaft in traditional winding devices, as well as uneven winding and unstable quality caused by internal stress of the film. The invention provides a wrapping film winding device that can quickly adapt to paper tubes with different inner diameters through adjustable and expandable clamping members, and effectively organize the film using set impact members, thereby achieving efficient roll changing and high-quality winding in synergy.

[0005] To achieve the above objectives, the present invention provides a stretch film winding device, comprising a base, a conveying assembly, a winding assembly, and a control component. The conveying assembly includes multiple conveying rollers disposed above the base. A winding assembly is disposed on the side of the conveying end of the conveying assembly. An impact member is disposed between the conveying assembly and the winding assembly. The control component is connected to the conveying assembly, the winding assembly, and the impact member. The winding assembly includes a bracket, a clamping member, and a first driving member. The clamping member includes a rotating disk, a central rod, several expansion rods, and an elastic member. The rotating disk is connected to the first driving member. The rotating disk has several sliding grooves arranged circumferentially along its axis. The central rod is vertically disposed on the rotating disk. Several expansion rods are spaced apart circumferentially along the central rod on the rotating disk. The side of each expansion rod closest to the rotating disk is adapted to fit the sliding groove. An elastic member is disposed within the sliding groove. One end of the elastic member is connected to the central rod, and the other end is connected to the expansion rod.

[0006] Preferably, the conveying rollers are arranged in pairs, one above the other, as roller groups, and multiple roller groups are arranged side by side on the same plane. The roller groups on both sides are provided with second driving components that are connected to the control components.

[0007] Preferably, the control element is a programmable logic controller for controlling the rotational speed of the first drive element and the second drive element and the impact frequency of the impact element.

[0008] Preferably, the cross-section of the expansion rod is set to semi-circular, and the outer peripheral surfaces of multiple expansion rods together form a cylindrical clamping surface for fitting the inner wall of the paper tube.

[0009] Preferably, the surface of the expansion rod is provided with an anti-slip coating.

[0010] Preferably, the impacting element is configured as an impact roller, and the axis of the impact roller is parallel to the axis of the conveying roller.

[0011] Preferably, the impact roller is connected to an impact drive unit disposed on the base.

[0012] Preferably, the impact drive unit is configured to drive the impact roller to reciprocate along a direction perpendicular to the winding film transmission direction in order to adjust the winding tension of the film.

[0013] Preferably, the impactor is provided with an electrostatic eliminator.

[0014] Preferably, the static eliminator is configured as an ion bar.

[0015] Through the above technical solution, the base and conveying rollers in the conveying assembly provide stable support for the device and facilitate the conveying of the stretch film. The winding assembly, comprising a bracket, a first driving component, and a unique clamping component, utilizes the synergistic action of the rotating disk, central rod, expansion rod sliding along the sliding groove, and elastic element within the clamping component to achieve adaptive, rapid, and secure clamping of paper tubes with different inner diameters, thereby significantly improving roll-changing efficiency. Simultaneously, the controller and the impact component positioned between the conveying and winding paths adjust the overall transmission speed of the film and actively perform physical shaking and conditioning, effectively releasing internal stress in the film. This allows the entire device to collaboratively achieve efficient and high-quality stretch film winding operations. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a film winding device provided by the present invention; Figure 2 yes Figure 1 A structural diagram of the back side; Figure 3 This is a schematic diagram of the structure of the clamping component in this invention; Figure 4 This is a schematic diagram of the structure of the impact component in this invention.

[0017] Explanation of reference numerals in the attached figures 1. Base; 2. Conveying roller; 3. Impact component; 5. Rotating disk; 6. Control component; 21. Second driving component; 31. Impact driving unit; 32. Static elimination component; 41. Bracket; 43. First driving component; 51. Center rod; 52. Expansion rod; 53. Elastic component; 54. Sliding groove. Detailed Implementation

[0018] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0019] As previously described, the present invention provides a stretch film winding device, comprising a base 1, a conveying assembly, a winding assembly, and a control component 6. The conveying assembly includes multiple conveying rollers 2, which are disposed above the base 1. A winding assembly is disposed on the side of the conveying end of the conveying assembly. An impact member 3 is disposed between the conveying assembly and the winding assembly. The control component 6 is connected to the conveying assembly, the winding assembly, and the impact member 3. The winding assembly includes a bracket 41, a clamping member, and a first driving member 43. The clamping member includes a rotating disk 5, a central rod 51, a plurality of expanding rods 52, and an elastic member 53. The rotating disk 5 is connected to the first driving member 43. The rotating disk 5 is provided with a plurality of sliding grooves 54 arranged circumferentially along its axis. The central rod 51 is vertically disposed on the rotating disk 5. On the rotating disk 5, a plurality of expansion rods 52 are arranged circumferentially along the central rod 51. The side of the expansion rod 52 near the rotating disk 5 is designed to fit the sliding groove 54. An elastic element 53 is provided in the sliding groove 54. One end of the elastic element 53 is connected to the central rod 51, and the other end is connected to the expansion rod 52. The base 1 and the conveying roller 2 in the conveying assembly realize the stable support of the device and the conveying of the wrapping film. Through the winding assembly including the bracket 41, the first driving member 43 and the unique clamping member, and specifically by utilizing the synergistic effect of the rotating disk 5, the central rod 51, the expansion rod 52 sliding along the sliding groove 54 and the elastic element 53 in the clamping member, the adaptive, fast and firm clamping of paper tubes with different inner diameters is realized, thereby greatly improving the roll changing efficiency. Meanwhile, the controller and the impact member 3 set between the conveying and winding paths adjust the overall transmission speed of the film and perform active physical shaking and sorting, effectively releasing the internal stress of the film, so that the whole device can work together to achieve efficient and high-quality winding of the film.

[0020] According to the technical solution provided by the present invention, the conveying rollers 2 are arranged in pairs, one above the other, as roller groups. Multiple roller groups are arranged side by side on the same plane. The roller groups on both sides are provided with second driving members 21 connected to the control member 6. This design is to enable multiple conveying rollers 2 to form a conveying platform and to provide power transmission to the winding assembly for the entering wrapping film through the second driving members 21. Furthermore, the roller groups are also provided with a position adjustment structure to adjust the distance between the two conveying rollers 2, thereby adapting to wrapping films of different thicknesses.

[0021] It should be noted that the control element 6 in this application is a programmable logic controller (PLC) used to control the rotation speed of the first drive element 43 and the second drive element 21 and the impact frequency of the impact element 3. The specific connection circuits with the first drive element, the impact element, and the second drive element, as well as the specific programming program, can be completed by those skilled in the art using relevant field knowledge. Furthermore, the rotation speed of the first drive element 43 and the second drive element 21, and the impact frequency of the impact element 3, are different for different specifications of stretch film, requiring adjustments by those skilled in the art based on actual production scenarios. In addition, the circuit connections and programming program are not critical to this application and will not be elaborated upon here. Meanwhile, this application does not specifically limit the first driving component 43 and the second driving component 21. The purpose of both is to move the traction membrane, and their specific implementation can be selected by those skilled in the art in combination with the specific production environment, such as servo motor, variable frequency motor, etc.

[0022] In this invention, the cross-section of the expansion rod 52 is set to semi-circular, and the outer peripheral surfaces of multiple expansion rods 52 together form a cylindrical clamping surface for adhering to the inner wall of the paper tube. This design is to avoid damage or deformation to the inside of the stretch film paper tube during the clamping process, resulting in poor wrapping effect of the stretch film. Furthermore, the surface of the expansion rod 52 is provided with an anti-slip coating. It should be noted that this application does not specifically limit the anti-slip coating. Its main purpose is to increase the friction coefficient between the expansion rod 52 and the stretch film paper tube. Specifically, it can be set as a rubber coating, a polyurethane coating, etc.

[0023] According to the technical solution provided by the present invention, the impact member 3 is configured as an impact roller, the axis of which is parallel to the axis of the conveying roller 2. The impact roller is connected to an impact drive unit 31 disposed on the base 1. If the wrapping film is in a taut state during the winding process, it will be continuously subjected to internal stress during winding, causing the wrapping film to be stretched. In severe cases, the wrapping film will lose its original performance. If it is too loose, it will also result in poor winding effect and require rewinding. The setting of the impact roller effectively avoids these situations. The parallelism of its axis with the axis of the conveying roller 2 is to ensure that the film can transition smoothly. Furthermore, in order to make the impact effect adjustable to adapt to films of different materials or thicknesses, this application connects the impact roller to an impact drive unit 31 disposed on the base 1. The impact drive unit 31 is configured to drive the impact roller to swing to adjust the winding tension of the film.

[0024] According to the technical solution provided by the present invention, the impact member 3 is provided with a static electricity eliminator 32. The static electricity eliminator 32 is disposed on the side of the impact member 3 that is in direct contact with the wrapping film. The specific installation position can also be selected by those skilled in the art in combination with the knowledge in the art and the specific static electricity eliminator 32 selected. For example, in a specific embodiment, the static electricity eliminator 32 is set as an ion rod. The ion rod is directly installed at the end of the impact member 3 and periodically contacts the wrapping film to achieve the effect of continuously removing static electricity. The ion rod itself can also be grounded by the components of this device and its connection part.

[0025] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings; however, the present invention is not limited thereto. Within the scope of the inventive concept, various simple modifications can be made to the technical solutions of the present invention. To avoid unnecessary repetition, the present invention will not describe the various possible combinations separately. However, these simple modifications and combinations should also be considered as the content disclosed in the present invention and are all within the protection scope of the present invention.

Claims

1. A film winding device, characterized in that, It includes a base (1), a conveying assembly, a winding assembly and a control unit (6). The conveying assembly includes multiple conveying rollers (2). The conveying rollers (2) are disposed above the base (1). A winding assembly is disposed on the side of the conveying end of the conveying assembly. An impact member (3) is disposed between the conveying assembly and the winding assembly. The control unit (6) is connected to the conveying assembly, the winding assembly and the impact member (3). The winding assembly includes a bracket (41), a clamping member, and a first driving member (43). The clamping member includes a rotating disk (5), a central rod (51), several expansion rods (52), and an elastic member (53). The rotating disk (5) is connected to the first driving member (43). The rotating disk (5) is provided with several sliding grooves (54) arranged circumferentially along its axis. The central rod (51) is vertically arranged on the rotating disk (5). Several expansion rods (52) are arranged circumferentially along the central rod (51) on the rotating disk (5). The side of the expansion rod (52) near the rotating disk (5) is designed to be adapted to the sliding groove (54). An elastic member (53) is provided in the sliding groove (54). One end of the elastic member (53) is connected to the central rod (51), and the other end is connected to the expansion rod (52).

2. The stretch film winding device according to claim 1, characterized in that, The conveying rollers (2) are arranged in pairs, one above the other, as roller groups. Multiple roller groups are arranged side by side on the same plane. The roller groups on both sides are provided with a second driving member (21) connected to the control member (6).

3. The film winding device according to claim 2, characterized in that, The control unit (6) is a programmable logic controller used to control the rotation speed of the first drive unit (43) and the second drive unit (21) and the impact frequency of the impact unit (3).

4. The stretch film winding device according to claim 1, characterized in that, The cross-section of the expansion rod (52) is set to semi-circular, and the outer peripheral surfaces of multiple expansion rods (52) together form a cylindrical clamping surface for fitting the inner wall of the paper tube.

5. The film winding device according to claim 4, characterized in that, The surface of the expansion rod (52) is provided with an anti-slip coating.

6. The film winding device according to claim 2, characterized in that, The impacting element (3) is configured as an impact roller, and the axis of the impact roller is parallel to the axis of the conveying roller (2).

7. The stretch film winding device according to claim 6, characterized in that, The impact roller is connected to the impact drive unit (31) disposed on the base (1).

8. The stretch film winding device according to claim 7, characterized in that, The impact drive unit (31) is configured to drive the impact roller to reciprocate along a direction perpendicular to the winding film transmission direction in order to adjust the winding tension of the film.

9. The stretch film winding device according to claim 1, characterized in that, The impact component (3) is provided with an electrostatic elimination component (32).

10. The stretch film winding device according to claim 9, characterized in that, The static eliminator (32) is configured as an ion bar.

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