Fresh-keeping film roll fixing mechanism
By designing a plastic wrap roll fixing mechanism, and utilizing the synergistic effect of a fixed seat, a movable seat, an elastic component, and an adjusting component, the problem of slippage and shaking when the plastic wrap roll is mounted on the rotating shaft is solved, thus achieving stability in the film-laying process and easy assembly and disassembly.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XIAMEN QIHENGDA TECH CO LTD
- Filing Date
- 2025-09-23
- Publication Date
- 2026-08-04
AI Technical Summary
Traditional plastic wrap rolls are prone to slipping and shaking when being placed on a rotating shaft, affecting the stability of the film-laying process.
A plastic wrap roll fixing mechanism was designed, including a fixed seat, a movable seat, an elastic element, and an adjusting element. By pushing and not pushing the movable seat with the adjusting element, the deformation of the elastic element is used to achieve stable fixing and disassembly of the plastic wrap roll.
It improves the stability of the film-laying process, ensures that the plastic wrap roll rotates synchronously with the fixing mechanism, simplifies the disassembly and assembly operations, and reduces manufacturing costs.
Smart Images
Figure CN224590323U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of packaging equipment technology, and more specifically, to a cling film roll fixing mechanism. Background Technology
[0002] Plastic wrap, a flexible, airtight, and moisture-proof plastic packaging product, is widely used in food preservation and product packaging. With the development of packaging automation technology, plastic wrap packaging machines have become increasingly common. Traditional plastic wrap packaging machines work by placing a plastic wrap roll around a rotatable shaft. The rotation of the shaft drives the plastic wrap roll to rotate, allowing the plastic wrap to be continuously released. However, with the plastic wrap roll directly around the shaft, slippage and wobbling may occur between the shaft and the plastic wrap roll during rotation, affecting the stability of the film release process. Utility Model Content
[0003] The purpose of this utility model is to provide a plastic wrap roll fixing mechanism, and the technical problem it solves is: how to improve the stability of the film spreading process.
[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution.
[0005] This utility model provides a plastic wrap roll fixing mechanism, which can be used to sleeve plastic wrap rolls and is rotatably mounted on the frame of a plastic wrap packaging machine. It includes: a fixed base; a movable base opposite to the fixed base, one end of which is hinged to the fixed base; an elastic element connected to both the fixed base and the movable base; and an adjusting element movably connected to the fixed base, which moves relative to the fixed base to push against or not push against the movable base. When the adjusting element pushes against the movable base, the elastic element deforms, and the movable base rotates away from the fixed base. When the adjusting element does not push against the movable base, the deformation of the elastic element returns to its original state, driving the movable base to rotate closer to the fixed base.
[0006] In some embodiments of this application, the adjusting member is hinged to the fixed seat, one end of the adjusting member is a pushing end, the pushing end is located between the fixed seat and the movable seat, and the adjusting member rotates relative to the fixed seat to drive the pushing end to push or not push the movable seat, and the other end of the adjusting member is an operating end, and the operating end is exposed outside the fixed seat.
[0007] In some embodiments of this application, the plastic wrap roll fixing mechanism further includes a main shaft, which is connected to the fixed seat and located on the side of the fixed seat facing the movable seat, and the main shaft is used to be rotatably connected to the frame.
[0008] In some embodiments of this application, the fixed seat extends axially on the main shaft, and both ends of the fixed seat are connected to the main shaft via two rotating shafts respectively; one end of the movable seat is hinged to one end of the fixed seat via one of the rotating shafts, and the adjusting member is hinged to the other end of the fixed seat via the other rotating shaft.
[0009] In some embodiments of this application, the plastic wrap roll fixing mechanism further includes at least two spring pieces arranged at intervals around the outer periphery of the main shaft. The spring pieces are connected to the main shaft and are arranged sequentially with the fixing seat along the axial direction of the main shaft.
[0010] In some embodiments of this application, there are two spring pieces, one of which is arranged side by side with the fixed seat in the axial direction of the main shaft, and the other spring piece is arranged side by side with the movable seat in the axial direction of the main shaft. Each spring piece includes a connecting portion and two elastic portions. The connecting portion is located in the radial direction of the main shaft and is connected to the main shaft. The two elastic portions are arranged axially symmetrically about the axis of the main shaft. Each elastic portion has a U-shaped structure and includes a first part, a second part, and a third part connected in sequence. The first part is connected to the connecting portion, and the second part is located on the radial direction of the main shaft outside the connecting portion.
[0011] In some embodiments of this application, the second portion of both elastic parts is provided with a delamination part extending radially outward along the main shaft, the delamination part being used to restrict the plastic wrap roll from dislodging from the side where the spring piece is located axially on the main shaft.
[0012] In some embodiments of this application, both the movable seat and the fixed seat are U-shaped structures. The movable seat includes a first side plate, a first middle plate, and a second side plate connected in sequence. The fixed seat includes a third side plate, a second middle plate, and a fourth side plate connected in sequence. The first middle plate and the second middle plate are arranged opposite to each other, and the third side plate and the fourth side plate are located between the first side plate and the second side plate.
[0013] In some embodiments of this application, both the first middle plate and the second middle plate are flat plate structures, and both the first middle plate and the second middle plate are provided with adjusting bolts, which extend toward the side close to the inner wall of the plastic wrap roll.
[0014] As can be seen from the above technical solution, the embodiments of this utility model have at least the following advantages and positive effects: In the cling film roll fixing mechanism of this utility model embodiment, in the initial state, the adjusting member does not push against the movable seat. At this time, the operator aligns the cling film roll with the fixing mechanism and pushes it forward, thus smoothly placing the cling film roll over the fixing mechanism. Subsequently, the adjusting member is controlled to move, causing it to push against the movable seat. As the movable seat rotates away from the fixed seat, the cling film roll fixing mechanism can gradually fit against the inner wall of the cling film roll, ultimately forming a locking and fixing of the cling film roll. When it is necessary to disassemble and replace the cling film roll, the adjusting member is controlled again to switch from pushing against the movable seat to not pushing against the movable seat. The movement of the movable seat towards the fixed seat allows the cling film roll fixing mechanism to gradually detach from the inner wall of the cling film roll, thereby ensuring that the subsequent pulling action of the cling film roll can smoothly separate the cling film roll from the fixing mechanism.
[0015] Therefore, through the coordinated cooperation between the fixed seat, the movable seat, the elastic element and the adjusting element, the plastic wrap roll can be stably fixed on the plastic wrap roll fixing mechanism, ensuring that the plastic wrap roll can rotate stably and synchronously with the plastic wrap roll fixing mechanism during the rotation of the plastic wrap roll fixing mechanism relative to the frame, thereby improving the stability of the film feeding process. Attached Figure Description
[0016] The various objectives, features, and advantages of this invention will become more apparent from the following detailed description of preferred embodiments in conjunction with the accompanying drawings. The drawings are merely illustrative illustrations of the invention and are not necessarily drawn to scale. In the drawings, the same reference numerals always denote the same or similar parts. Wherein: Figure 1 This is a schematic diagram of a plastic wrap roll fixing mechanism according to an exemplary embodiment.
[0017] Figure 2 yes Figure 1 A structural diagram in another state.
[0018] Figure 3 yes Figure 1 A schematic diagram of its decomposed structure.
[0019] Figure 4 yes Figure 1 A schematic diagram of a structure fitted with a plastic wrap sleeve.
[0020] Figure 5 yes Figure 4 Side view.
[0021] The annotations in the attached figures are explained as follows: 1. Fixed base; 11. Third side plate; 12. Second middle plate; 13. Fourth side plate; 2. Movable seat; 21. First side panel; 22. First middle panel; 23. Second side panel; 3. Elastic components; 4. Adjusting component; 41. Pushing end; 411. Bearing; 42. Operating end; 5. Spindle; 6. Shaft; 7. Spring; 71. Connecting part; 72. Elastic part; 721. First part; 722. Second part; 7221. Anti-dislodgement part; 723. Third part; 8. Adjusting bolts; 9. Plastic wrap rolls. Detailed Implementation
[0022] Although the present invention can be readily embodied in various forms, only some specific embodiments are shown in the accompanying drawings and will be described in detail in this specification. It is understood that this specification should be regarded as an exemplary illustration of the principles of the present invention and is not intended to limit the present invention to what is described herein.
[0023] Therefore, a feature pointed out in this specification is used to describe one feature of one embodiment of the present invention, and does not imply that every embodiment of the present invention must have the described feature. Furthermore, it should be noted that this specification describes many features. Although certain features may be combined to illustrate possible system designs, these features may also be used in other combinations not explicitly stated. Therefore, unless otherwise stated, the described combinations are not intended to be limiting.
[0024] In the embodiments shown in the accompanying drawings, the directional indications (such as up, down, left, right, front, and back) used to explain the structure and movement of the various elements of this invention are relative rather than absolute. These descriptions are appropriate when these elements are in the positions shown in the drawings. If the descriptions of the positions of these elements change, these directional indications also change accordingly.
[0025] Please see Figures 1 to 5This utility model provides a plastic wrap roll fixing mechanism that allows a plastic wrap roll 9 to be fitted and rotatably mounted on the frame of a plastic wrap packaging machine. It mainly includes a fixed base 1, a movable base 2, an elastic element 3, and an adjusting element 4. The movable base 2 is positioned opposite to the fixed base 1, with one end of the movable base 2 hinged to the fixed base 1. The elastic element 3 is connected to both the fixed base 1 and the movable base 2. The adjusting element 4 is movably connected to the fixed base 1 and can move relative to the fixed base 1 to push against or not push against the movable base 2. When the adjusting element 4 pushes against the movable base 2, the elastic element 3 deforms, and the movable base 2 rotates away from the fixed base 1. When the adjusting element 4 does not push against the movable base 2, the deformation of the elastic element 3 returns to normal, driving the movable base 2 to rotate closer to the fixed base 1.
[0026] In the cling film roll fixing mechanism of this utility model embodiment, in the initial state, the adjusting member 4 does not push against the movable seat 2. At this time, the operator aligns the cling film roll 9 with the fixing mechanism and pushes it forward, so that the cling film roll 9 can be smoothly placed outside the fixing mechanism. Subsequently, the adjusting member 4 is controlled to move, so that it begins to push against the movable seat 2. As the movable seat 2 rotates away from the fixed seat 1, the cling film roll fixing mechanism can gradually fit against the inner wall of the cling film roll 9, and finally form a locking and fixing of the cling film roll 9. When it is necessary to disassemble and replace the cling film roll 9, the adjusting member 4 is controlled to move again, so that it switches from pushing against the movable seat 2 to not pushing against the movable seat 2. The movement of the movable seat 2 towards the fixed seat 1 allows the cling film roll fixing mechanism to gradually detach from the inner wall of the cling film roll 9, thereby ensuring that the subsequent pulling action of the cling film roll 9 can smoothly separate the cling film roll 9 from the fixing mechanism.
[0027] Therefore, through the coordinated cooperation between the fixed seat 1, the movable seat 2, the elastic element 3 and the adjusting element 4, the plastic wrap roll 9 can be stably fixed on the plastic wrap roll fixing mechanism, ensuring that the plastic wrap roll 9 can stably rotate synchronously with the plastic wrap roll fixing mechanism during the rotation of the plastic wrap roll fixing mechanism relative to the frame, thereby improving the stability of the film feeding process.
[0028] It is conceivable that by controlling the movement of the adjusting component 4, it can push against or not push against the movable seat 2, so that the fixing mechanism can switch between overall expansion and overall contraction, which can be adapted to the disassembly and assembly of the plastic wrap roll 9, and is relatively convenient to operate.
[0029] In a specific embodiment, the adjusting member 4 is hinged to the fixed seat 1. One end of the adjusting member 4 is a pushing end 41, which is located between the fixed seat 1 and the movable seat 2. The adjusting member 4 rotates relative to the fixed seat 1 to drive the pushing end 41 to push or not push the movable seat 2. The other end of the adjusting member 4 is an operating end 42, which is exposed outside the fixed seat 1.
[0030] The adjusting member 4 forms a lever with the hinge point as the fulcrum. When the operator manually operates the operating end 42 of the adjusting member 4, it can drive the pushing end 41 to move in the opposite direction relative to the operating end 42. Specifically, as the operator acts on the operating end 42 to bring it closer to the fixed seat 1, the pushing end 41 moves away from the fixed seat 1 and closer to the movable seat 2. The pushing end 41, which is moving closer to the movable seat 2, presses against the movable seat 2, overcoming the force of the elastic member 3, and forcing the movable seat 2 to rotate outward around its hinge point with the fixed seat 1, thereby expanding the fixed mechanism. Operating the operating end 42 in the opposite way can achieve the contraction of the fixed mechanism, which will not be elaborated further here. The hinge between the operating member and the fixed seat 1 makes the fixed mechanism simple to operate and labor-saving.
[0031] In this embodiment, the length from the hinge point to the operating end 42 is greater than the length from the hinge point to the pushing end 41, making it easier for the operator to apply force to the operating end 42.
[0032] In other embodiments, the adjusting member 4 is movably connected to the fixed base 1, and the adjusting member 4 can move relative to the fixed base 1 to the side away from or closer to the movable base 2.
[0033] In a specific embodiment, the plastic wrap roll fixing mechanism further includes a main shaft 5, which is connected to the fixed seat 1 and located on the side of the fixed seat 1 facing the movable seat 2. The main shaft 5 is used to rotatably connect to the frame. The main shaft 5 provides a stable rotation center for the plastic wrap roll fixing mechanism to rotate relative to the frame, thus undertaking the rotation function of the fixing mechanism. When the movable seat 2 rotates away from the fixed seat 1, the fixed seat 1 and the movable seat 2 can abut against the inner wall of the plastic wrap roll 9 from opposite sides of the main shaft 5, thereby providing a practical structure for the plastic wrap roll fixing mechanism to abut against the inner wall of the plastic wrap roll 9.
[0034] In other embodiments, the fixed seat 1, movable seat 2, elastic element 3, and adjusting element 4 are arranged in groups, and multiple groups are spaced apart around the outer periphery of the main shaft 5. The fixed seat 1 of the fixed seat 1, movable seat 2, elastic element 3, and adjusting element 4 is connected to the main shaft 5. In this embodiment, multiple movable seats 2 of the multiple groups of fixed seats 1, movable seats 2, elastic element 3, and adjusting element 4 are used to jointly abut against the inner wall of the plastic wrap roll 9.
[0035] In a specific embodiment, the fixed seat 1 extends axially along the main shaft 5, and both ends of the fixed seat 1 are connected to the main shaft 5 via two rotating shafts 6. One end of the movable seat 2 is hinged to one end of the fixed seat 1 via one of the rotating shafts 6, and the adjusting member 4 is hinged to the other end of the fixed seat 1 via the other rotating shaft 6. Integrating the main shaft 5, fixed seat 1, movable seat 2, and adjusting member 4 together via two rotating shafts 6 reduces the number of parts, simplifies assembly, thereby reducing manufacturing costs and improving the stability of the overall structure.
[0036] Please see Figures 1 to 3 In a specific embodiment, the plastic wrap roll fixing mechanism further includes at least two spring pieces 7 arranged at intervals around the outer periphery of the main shaft 5. The spring pieces 7 are connected to the main shaft 5 and are arranged sequentially with the fixing seat 1 in the axial direction of the main shaft 5 to provide additional fixing for the plastic wrap roll 9, ensuring that the plastic wrap roll 9 can be more stably fixed on the plastic wrap roll fixing mechanism, thereby further improving the stability of the film feeding process.
[0037] Please see Figure 2 and Figure 3 In a specific embodiment, there are two spring pieces 7. One spring piece 7 is arranged side by side with the fixed seat 1 along the axial direction of the main shaft 5, and the other spring piece 7 is arranged side by side with the movable seat 2 along the axial direction of the main shaft 5. Each spring piece 7 includes a connecting portion 71 and two elastic portions 72. The connecting portion 71 is located radially on the main shaft 5 and connected to it. The two elastic portions 72 are arranged axially symmetrically about the axis of the main shaft 5. Each elastic portion 72 has a U-shaped structure and includes a first part 721, a second part 722, and a third part 723 connected sequentially. The first part 721 is connected to the connecting portion 71, and the second part 722 is located radially on the main shaft 5 outside the connecting portion 71. The two spring pieces 7, the fixed seat 1, and the movable seat 2 work together to provide uniform and stable support for the plastic wrap roll 9. The specific structure of the spring piece 7 ensures that it provides a smooth elastic effect.
[0038] In a specific embodiment, the second part 722 of both elastic parts 72 is provided with a stop part 7221 extending radially outward along the main shaft 5. The stop part 7221 is used to restrict the plastic wrap roll 9 from coming off from the side of the spring piece 7 located in the axial direction of the main shaft 5, thereby forming an axial lock and preventing the plastic wrap roll 9 from accidentally falling off.
[0039] In this embodiment, the adjusting member 4 is located on the side of the fixed base 1 away from the spring piece 7 in the axial direction of the main shaft 5.
[0040] Please see Figures 1 to 5 In a specific embodiment, the pushing end 41 is provided with a rotatable bearing 411 to reduce operating force and improve operating feel.
[0041] Please see Figures 1 to 5In a specific embodiment, both the movable seat 2 and the fixed seat 1 have a U-shaped structure. The movable seat 2 includes a first side plate 21, a first middle plate 22, and a second side plate 23 connected in sequence. The fixed seat 1 includes a third side plate 11, a second middle plate 12, and a fourth side plate 13 connected in sequence. The first middle plate 22 and the second middle plate 12 are arranged opposite to each other, and the third side plate 11 and the fourth side plate 13 are located between the first side plate 21 and the second side plate 23. The oppositely arranged first middle plate 22 and the second middle plate 12 provide a stable support surface for the plastic wrap roll 9. The third side plate 11 and the fourth side plate 13 of the fixed seat 1 can provide motion guidance for the first side plate 21 and the second side plate 23 of the movable seat 2. Through the cooperation between the side plates, the offset between the movable seat 2 and the fixed seat 1 can be reduced, thereby improving the stability and reliability of the overall structure.
[0042] In a specific embodiment, both the first middle plate 22 and the second middle plate 12 are flat, and both the first middle plate 22 and the second middle plate 12 are provided with adjusting bolts 8, which extend towards the side close to the inner wall of the cling film roll 9. The adjusting bolts are used to increase the number of connection points and improve the fastening effect.
[0043] In the above embodiments, the elastic element 3 is a tension spring, and the elastic element 3 is arranged near the end of the fixed base 1 that is hinged to the adjusting element 4.
[0044] Although the present invention has been described with reference to several typical embodiments, it should be understood that the terminology used is descriptive and exemplary, and not restrictive. Since the present invention can be embodied in many forms without departing from the spirit or essence of the invention, it should be understood that the above embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope defined by the appended claims. Therefore, all variations and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.
Claims
1. A plastic wrap roll fixing mechanism, which allows for the sleeve placement of plastic wrap rolls and is rotatably mounted on the frame of a plastic wrap packaging machine, characterized in that, include: Fixed base; A movable seat is disposed opposite to the fixed seat, and one end of the movable seat is hinged to the fixed seat; The elastic element is connected to the fixed seat and the movable seat respectively; An adjusting member is movably connected to the fixed base, and the adjusting member moves relative to the fixed base to push against or not push against the movable base. When the adjusting member pushes against the movable base, the elastic member deforms, and the movable base rotates away from the fixed base. When the adjusting member does not push against the movable base, the deformation of the elastic member is restored, and the movable base is driven to rotate closer to the fixed base.
2. The cling film roll fixing mechanism according to claim 1, characterized in that, The adjusting member is hinged to the fixed seat. One end of the adjusting member is a pushing end, which is located between the fixed seat and the movable seat. The adjusting member can rotate relative to the fixed seat to drive the pushing end to push against or not push against the movable seat. The other end of the adjusting member is an operating end, which is exposed outside the fixed seat.
3. The cling film roll fixing mechanism according to claim 2, characterized in that, It also includes a spindle, which is connected to the fixed base and located on the side of the fixed base facing the movable base, and the spindle is used to rotatably connect to the frame.
4. The cling film roll fixing mechanism according to claim 3, characterized in that, The fixed seat extends axially on the main shaft, and both ends of the fixed seat are connected to the main shaft via two rotating shafts respectively; One end of the movable seat is hinged to one end of the fixed seat via one of the rotating shafts, and the adjusting member is hinged to the other end of the fixed seat via the other rotating shaft.
5. The cling film roll fixing mechanism according to claim 3, characterized in that, It also includes at least two springs arranged at intervals around the outer periphery of the main shaft, the springs being connected to the main shaft and arranged sequentially with the fixing seat along the axial direction of the main shaft.
6. The cling film roll fixing mechanism according to claim 5, characterized in that, The number of spring pieces is two, one of which is arranged side by side with the fixed seat in the axial direction of the main shaft, and the other spring piece is arranged side by side with the movable seat in the axial direction of the main shaft; The spring includes a connecting part and two elastic parts. The connecting part is located in the radial direction of the main shaft and is connected to the main shaft. The two elastic parts are arranged symmetrically about the axis of the main shaft. The elastic parts have a U-shaped structure and include a first part, a second part and a third part connected in sequence. The first part is connected to the connecting part, and the second part is located on the radial direction of the main shaft outside the connecting part.
7. The cling film roll fixing mechanism according to claim 6, characterized in that, Both elastic portions are provided with a delamination part extending radially outward along the main shaft on the second part of each elastic portion. The delamination part is used to prevent the plastic wrap roll from coming off the side where the spring piece is located in the axial direction of the main shaft.
8. The cling film roll fixing mechanism according to claim 2, characterized in that, The pushing end is equipped with a rotatable bearing.
9. The plastic wrap roll fixing mechanism according to claim 1, characterized in that, Both the movable seat and the fixed seat have a U-shaped structure. The movable seat includes a first side plate, a first middle plate and a second side plate connected in sequence. The fixed seat includes a third side plate, a second middle plate and a fourth side plate connected in sequence. The first middle plate and the second middle plate are arranged opposite to each other, and the third side plate and the fourth side plate are located between the first side plate and the second side plate.
10. The cling film roll fixing mechanism according to claim 9, characterized in that, Both the first and second middle plates are flat plate structures, and both the first and second middle plates are provided with adjusting bolts, which extend towards the side close to the inner wall of the plastic wrap roll.