An adaptive fit stretch wrap packaging apparatus

Abstract

The utility model relates to winding film packing device technical field discloses a kind of self-adapting assembly's winding film packing device, including packing handle, and packing handle includes holding portion, and it is provided with assembly portion on holding portion;Self-adapting assembly unit is used to carry out self-adapting adjustment to assembly portion, and different winding films of assembly width are conveniently packed and handled.The utility model self-adapting assembly unit breaks the limitation of only adapting single 6cm specification winding film to existing packing handle, can stably adapt 4cm, 5cm, 6cm three mainstream width winding films, without replacing handle or additional accessories, satisfy the packing demand of multiple-specification goods in logistics packaging, significantly improve the adaptation ability of equipment to different scenarios.

Description

Technical Field

[0001] This utility model relates to the technical field of stretch film packaging devices, and more specifically, it relates to an adaptive assembly stretch film packaging device. Background Technology

[0002] In logistics warehousing, e-commerce delivery and other fields, stretch film packaging is a key process to ensure the stability of cargo transportation. Its core equipment is a handheld stretch film packaging device. This device realizes the installation and rotation of the film through the handle structure of the grip and assembly parts. The assembly part is used to put on the stretch film roll, and the grip part is used by the operator to hold and exert force. Through the rotation action, the stretch film is evenly wrapped around the surface of the goods.

[0003] Currently, the mainstream width of stretch film on the market is 6cm. Therefore, the assembly dimensions of existing packing handles are all designed according to the 6cm specification, with a snap-fit ​​structure on the outside of the assembly to ensure that there is no axial movement after the 6cm film roll is sleeved, meeting the mainstream packing requirements. However, with the development of more refined cargo packaging, the application of 4cm and 5cm wide stretch films is gradually increasing due to their advantages of material saving and suitability for small goods. However, the shortcomings of existing handles are becoming increasingly apparent.

[0004] The existing handle assembly part has a fixed size and can only accommodate 6cm film rolls. When assembling 4cm or 5cm film rolls, there is an axial gap of 1 to 2cm between the inner wall of the film roll and the outer wall of the assembly part. During the packing rotation, the film roll is prone to axial displacement and radial shaking, resulting in wrinkles and uneven tension of the wrapped film layer. In severe cases, the film roll may fall off or the goods may be loosely packed, which cannot meet the packing quality requirements of multiple specifications of film. Utility Model Content

[0005] This invention provides an adaptive assembly wrapping device for stretch film, which solves the technical problem in the related art where the size of the existing handle assembly part is fixed and cannot meet the packaging quality requirements of multiple specifications of film.

[0006] This utility model provides an adaptive assembly stretch film packaging device, including a packaging handle, which includes a gripping part and an assembly part. The assembly part has multiple sets of U-shaped openings in a ring shape, which divide the assembly part into multiple sets of deformable arc plates. Each set of arc plates is equipped with a buckle part. An adaptive assembly unit is used to adaptively adjust the assembly part to assemble stretch films of different widths, which facilitates the packaging of goods.

[0007] As a further optimization of this utility model, the adaptive assembly unit includes a first adaptive assembly mechanism, which includes a first U-shaped groove and a second U-shaped groove formed on each set of arc plates. The first U-shaped groove and the second U-shaped groove enable the formation of a first adjustment area and a second adjustment area on the arc plates.

[0008] As a further optimization of this utility model, a first adjustment limiting part is installed on the first adjustment area, and a second adjustment limiting part is installed on the second adjustment area. The stretch film is installed on the outside of the assembly part by the extrusion assembly part, and the stretch film of the appropriate size is limited and fixed by the buckle part, the first adjustment limiting part or the second adjustment limiting part.

[0009] As a further optimization of this utility model, the adaptive assembly unit includes a second adaptive assembly mechanism. The second adaptive assembly mechanism includes a first rotating shaft with a bearing connected inside the gripping part. A threaded rod is installed on the first rotating shaft, and a threaded sleeve is threadedly connected to the threaded rod. A first connecting seat is installed on the threaded sleeve, and the first connecting seat is fixedly connected to the assembly part. A first knob is installed on the first rotating shaft.

[0010] As a further optimization of this utility model, the adaptive assembly unit includes a third adaptive assembly mechanism, which includes a second rotating shaft disposed inside the gripping part. One end of the second rotating shaft is connected to a traction rod by a bearing, and the end of the traction rod away from the second rotating shaft is equipped with a second connecting seat. The second connecting seat is fixedly connected to the assembly part. A snap-fit ​​plate is installed on the second rotating shaft. Multiple sets of snap-fit ​​seats are symmetrically arranged on both sides inside the gripping part. A second knob is installed on the second rotating shaft.

[0011] As a further optimization of this utility model, protrusions are installed on both sides of the snap-fit ​​plate, and the interior of the snap-fit ​​base is provided with a groove that matches the protrusions, and the protrusions and the grooves are engaged.

[0012] As a further optimization of this utility model, a partition is slidably connected to the outside of the traction rod, and the partition is fixedly connected to the inner wall of the gripping part. A spring is also provided on the outside of the traction rod.

[0013] The beneficial effects of this utility model are as follows: The adaptive assembly unit of this utility model, through adaptive adjustment of the assembly part, breaks the limitation of existing packing handles that only adapt to a single 6cm specification stretch film. It can stably adapt to three mainstream widths of stretch film: 4cm, 5cm, and 6cm, without the need to replace the handle or additional accessories. This meets the packing needs of multi-specification goods in logistics packaging and significantly improves the equipment's adaptability to different scenarios. Specifically, after adjustment, the adaptive assembly unit can form a reliable constraint on the assembly part. Combined with the clamping force of the deformable arc plate of the assembly part, it effectively avoids axial movement and radial swaying of the stretch film during the packing rotation process, ensuring uniform stretch film tension and a flat film layer. This reduces transportation losses caused by loose packing and ensures the stability of packaging quality. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural schematic diagram of Embodiment 1 of this utility model;

[0015] Figure 2 This is Embodiment 1 of the present utility model. Figure 1 Enlarged view of the structure at point A in the middle;

[0016] Figure 3 This is a three-dimensional structural schematic diagram of Embodiment 2 of this utility model;

[0017] Figure 4 This is a three-dimensional cross-sectional view of Embodiment 2 of this utility model;

[0018] Figure 5 This is a three-dimensional structural diagram of Embodiment 3 of this utility model;

[0019] Figure 6 This is a three-dimensional cross-sectional view of Embodiment 3 of this utility model;

[0020] Figure 7 This is a schematic diagram of the three-dimensional structure of the snap-fit ​​plate in Embodiment 3 of this utility model.

[0021] In the diagram: 100, Packing handle; 110, Grip; 120, Assembly part; 130, Buckle part; 200, First adaptive assembly mechanism; 210, First U-shaped groove; 220, Second U-shaped groove; 230, First adjustment limit part; 240, Second adjustment limit part; 300, Second adaptive assembly mechanism; 310, First rotating shaft; 320, Threaded rod; 330, Threaded sleeve; 340, First connecting seat; 350, First telescopic groove; 360, Guide post; 370, Guide sleeve; 380, First knob; 400, Third adaptive assembly mechanism; 410, Second rotating shaft; 420, Traction rod; 430, Second connecting seat; 440, Partition; 450, Spring; 460, Second telescopic groove; 470, Snap-fit ​​plate; 480, Snap-fit ​​seat; 490, Second knob; 500, Observation window. Detailed Implementation

[0022] The subject matter described herein will now be discussed with reference to exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and implement the subject matter described herein, and changes may be made to the function and arrangement of the elements discussed without departing from the scope of this specification. Various processes or components may be omitted, substituted, or added as needed in the examples. Furthermore, features described in some examples may be combined in other examples.

[0023] Example 1: According to the appendix Figure 1 As shown, an adaptive assembly stretch film packaging device includes a packaging handle 100, which includes a gripping part 110 and an assembly part 120. The assembly part 120 has multiple sets of U-shaped openings in a ring shape, dividing the assembly part 120 into multiple sets of deformable arc plates through the U-shaped openings. Each set of arc plates is equipped with a buckle part 130. An adaptive assembly unit is used to adaptively adjust the assembly part 120 to assemble stretch films of different widths, which facilitates the packaging of goods.

[0024] In one embodiment, according to the appendix Figure 2 As shown, the adaptive assembly unit includes a first adaptive assembly mechanism 200. The first adaptive assembly mechanism 200 includes a first U-shaped groove 210 and a second U-shaped groove 220 formed on each set of arc plates. The first U-shaped groove 210 and the second U-shaped groove 220 form a first adjustment area and a second adjustment area on the arc plates.

[0025] The first adjustment area is equipped with a first adjustment limiting part 230, and the second adjustment area is equipped with a second adjustment limiting part 240. The stretch film is installed on the outside of the assembly part 120 by the extrusion assembly part 120, and the stretch film of the appropriate size is limited and fixed by the buckle part 130, the first adjustment limiting part 230 or the second adjustment limiting part 240.

[0026] It should be noted that the distance between the buckle part 130, the first adjustment limit part 230 and the second adjustment limit part 240 is set to 1cm.

[0027] During operation, the assembly section 120, divided by a deformable arc-shaped plate with an annular U-shaped opening, possesses elastic properties that allow for radial contraction / reset. The arc-shaped plate must be made of a material with a certain degree of toughness, such as modified PP or ABS. When the operator presses the arc-shaped plate towards the center, the plate contracts inward, reducing the overall outer diameter of the assembly section 120 and providing space for the insertion of wrapping films of different widths. After being released, the arc-shaped plate elastically resets, creating a radial clamping force on the outer wrapping film.

[0028] It should be explained in detail that the assembly principle of the three specifications of stretch film is as follows:

[0029] When assembling 6cm stretch film, it is directly inserted into the assembly part 120. The inner edge of the stretch film fits against the buckle part 130. The buckle part 130 prevents the stretch film from moving axially through the radial protrusion structure. At the same time, the clamping force after the arc plate is reset prevents radial shaking, thus achieving stable assembly.

[0030] When assembling the 5cm stretch film, the curved plate is squeezed to shrink the assembly part 120. After the 5cm film is inserted, it is released. When the curved plate returns to its original position, the inner edge of the stretch film fits against the first adjustment limit part 230. Since the first adjustment limit part 230 is 1cm closer to the inner side of the assembly part 120 than the buckle part 130, it matches the 5cm width difference. The clamping force of the first adjustment limit part 230 and the curved plate work together to prevent shaking.

[0031] Similarly, when assembling a 4cm stretch film, the inner edge of the stretch film after being covered fits with the second adjustment limiting part 240. The second adjustment limiting part 240 is 1cm further inward than the first adjustment limiting part 230, matching the 4cm width difference. Stable fixation is achieved through the second adjustment limiting part 240 and the clamping force.

[0032] In summary, after assembly, the operator holds the gripping part 110 and rotates it for packaging. Because the stretch film is double-fixed by the graded limiting part and the clamping force of the arc plate, it will not move axially or radially due to the tension during rotation, ensuring that the stretch film has uniform wrapping tension on the surface of the goods and avoiding problems such as film layer displacement and wrinkles.

[0033] Example 2: According to the appendix Figure 3 As shown, an adaptive assembly stretch film packaging device includes a packaging handle 100, which includes a gripping part 110 and an assembly part 120. The assembly part 120 has multiple sets of U-shaped openings in a ring shape, dividing the assembly part 120 into multiple sets of deformable arc plates through the U-shaped openings. Each set of arc plates is equipped with a buckle part 130. An adaptive assembly unit is used to adaptively adjust the assembly part 120 to assemble stretch films of different widths, which facilitates the packaging of goods.

[0034] In one embodiment, according to the appendix Figure 4As shown, the adaptive assembly unit includes a second adaptive assembly mechanism 300. The second adaptive assembly mechanism 300 includes a first rotating shaft 310 connected to the inside of the gripping part 110 by a bearing. A threaded rod 320 is mounted on the first rotating shaft 310, and a threaded sleeve 330 is threadedly connected to the threaded rod 320. A first connecting seat 340 is mounted on the threaded sleeve 330, and the first connecting seat 340 is fixedly connected to the assembly part 120. A first knob 380 is mounted on the first rotating shaft 310.

[0035] Furthermore, a first telescopic groove 350 is provided inside the gripping part 110 near the assembly part 120, and the inner wall of the first telescopic groove 350 is inclined, and the inclination angle of the first telescopic groove 350 is adapted to the inclination angle of the assembly part 120.

[0036] This embodiment replaces the manual extrusion deformation of Embodiment 1 with mechanical transmission, achieving more precise and labor-saving adaptive adjustment.

[0037] During operation, the operator rotates the first knob 380 clockwise or counterclockwise according to the width of the wrapping film to be assembled, such as 4cm / 5cm / 6cm, causing the first rotating shaft 310 and the coaxial threaded rod 320 to rotate synchronously. It should be noted that guide posts 360 are installed on both sides inside the gripping part 110, and guide sleeves 370 are slidably connected to the outside of the guide posts 360. The guide sleeves 370 are fixedly connected to the threaded sleeve 330. Due to the limiting constraints of the guide posts 360 and the guide sleeves 370, the threaded sleeve 330 cannot rotate with the threaded rod 320; it can only move linearly along the axis of the threaded rod 320, approaching or moving away from the assembly part 120.

[0038] To accommodate a 4cm or 5cm wide film, rotate the first knob 380 clockwise. The threaded rod 320 moves the threaded sleeve 330 closer to the inside of the gripping part 110, and the first connecting seat 340 pulls the assembly part 120 inward toward the gripping part 110. To accommodate a 6cm wide mainstream film, rotate the first knob 380 counterclockwise. The threaded sleeve 330 moves away from the gripping part 110, pushing the assembly part 120 outward to return to the reference size.

[0039] After the stretch film is fitted into the assembly part 120, the buckle part 130 still serves as a reference limiting structure and engages with the edge of the film. Combined with the radial expansion force of the arc plate, the stretch film is fixed without shaking, ensuring stable tension during packaging.

[0040] Example 3: According to the appendix Figure 5As shown, an adaptive assembly stretch film packaging device includes a packaging handle 100, which includes a gripping part 110 and an assembly part 120. The assembly part 120 has multiple sets of U-shaped openings in a ring shape, dividing the assembly part 120 into multiple sets of deformable arc plates through the U-shaped openings. Each set of arc plates is equipped with a buckle part 130. An adaptive assembly unit is used to adaptively adjust the assembly part 120 to assemble stretch films of different widths, which facilitates the packaging of goods.

[0041] In one embodiment, according to the appendix Figure 6 and attached Figure 7 As shown, the adaptive assembly unit includes a third adaptive assembly mechanism 400. The third adaptive assembly mechanism 400 includes a second rotating shaft 410 disposed inside the gripping part 110. One end of the second rotating shaft 410 is connected to a traction rod 420 by a bearing, and a second connecting seat 430 is installed at the end of the traction rod 420 away from the second rotating shaft 410. The second connecting seat 430 is fixedly connected to the assembly part 120. A snap-fit ​​plate 470 is installed on the second rotating shaft 410. Multiple sets of snap-fit ​​seats 480 are symmetrically arranged on both sides inside the gripping part 110. A second knob 490 is installed on the second rotating shaft 410.

[0042] Specifically, both sides of the snap-fit ​​plate 470 are equipped with protrusions, and the snap-fit ​​base 480 has a groove inside that matches the protrusions. The protrusions and the grooves are engaged.

[0043] The side of the card holder 480 with the groove is the engaging surface, and the distance from the engaging surface of multiple card holders 480 to the engaging surface of the next card holder 480 is 1cm.

[0044] It should be noted that the pull rod 420 is slidably connected to the outside of the partition 440, and the partition 440 is fixedly connected to the inner wall of the grip part 110. The pull rod 420 is also provided with a spring 450, one end of the spring 450 is fixedly connected to the second connecting seat 430, and the other end of the spring 450 is fixedly connected to the partition 440.

[0045] Furthermore, a second telescopic groove 460 is provided inside the gripping part 110 near the assembly part 120, and the inner wall of the second telescopic groove 460 is inclined, and the inclination angle of the second telescopic groove 460 is adapted to the inclination angle of the assembly part 120.

[0046] In this embodiment, rotating the second knob 490 drives the snap-fit ​​plate 470 to switch between different snap-fit ​​seats. Combined with the assistance of the spring 450 and the tilt guide, adaptive assembly of three widths of wrapping film is achieved.

[0047] In the initial state, the spring 450 is slightly pre-compressed, the protrusion of the snap-fit ​​plate 470 engages with the first set of symmetrically arranged snap-fit ​​seats 480, and the length of the assembly part 120 is at its maximum, adapting to 6cm mainstream stretch film.

[0048] The operator pulls the second knob 490, which drives the second rotating shaft 410 and the snap-fit ​​plate 470 to pull and rotate synchronously, disengaging them from the groove of the first set of snap-fit ​​seats 480 and unlocking their positioning. After the second knob 490 rotates 90°, the second rotating shaft 410 pulls the second connecting seat 430 through the traction rod 420, causing the assembly part 120 to move along the inclined inner wall of the second telescopic groove 460 towards the inside of the grip part 110. The spring 450 is further compressed, storing elastic potential energy. Subsequently, the protrusion of the rotating snap-fit ​​plate 470 aligns with the groove of the second set of snap-fit ​​seats 480, the elastic potential energy of the spring 450 is released, and the protrusion is pushed into the groove. At this time, the shrinkage of the assembly part 120 corresponds to a width difference of 1cm, which is suitable for 5cm wrapping film.

[0049] Repeat the above unlocking, pulling, and positioning process to disengage the protrusion of the snap plate 470 from the second snap seat 480, further pull the assembly part 120 to retract until the protrusion snaps into the third snap seat 480. At this time, the retraction amount of the assembly part 120 corresponds to a 2cm width difference, which is suitable for a 4cm wrapping film.

[0050] When a reset is required, the operator pulls and rotates the second knob 490, the protrusion of the snap plate 470 disengages from the third set of snap seats 480, the elastic potential energy of the spring 450 is gradually released, causing the assembly part 120 to reset, so that the snap plate 470 re-engages with the first set of snap seats 480, and the assembly part 120 returns to its maximum length to fit a 6cm film.

[0051] In other embodiments, according to the appendix Figure 5 and attached Figure 6 As shown, the gripping part 110 has an opening, and an observation window 500 is installed inside the opening. The position of the observation window 500 corresponds to the position of the multiple card holders 480. The observation window 500 facilitates the viewing of the internal card engagement status and position information.

[0052] The embodiments of this specific implementation have been described above. However, this embodiment is not limited to the specific implementation described above. The specific implementation described above is merely illustrative and not restrictive. Those skilled in the art can make many other forms based on the guidance of this embodiment, all of which are within the protection scope of this embodiment.

Claims

1. An adaptive assembly wrapping device for stretch film, characterized in that, include: The packing handle includes a gripping part and an assembly part. The assembly part has multiple sets of U-shaped openings in a ring shape. The assembly part is divided into multiple sets of deformable arc plates through the U-shaped openings. Each set of arc plates is equipped with a buckle part. An adaptive assembly unit is used to adaptively adjust the assembly part and assemble wrapping films of different widths to facilitate the packaging of goods.

2. The adaptive assembly wrapping device for stretch film packaging according to claim 1, characterized in that, The adaptive assembly unit includes a first adaptive assembly mechanism, which includes a first U-shaped groove and a second U-shaped groove formed on each set of arc plates. The first U-shaped groove and the second U-shaped groove form a first adjustment area and a second adjustment area on the arc plates.

3. The adaptive assembly wrapping device for stretch film packaging according to claim 2, characterized in that, A first adjustment limiting part is installed on the first adjustment area, and a second adjustment limiting part is installed on the second adjustment area. The stretch film is installed on the outside of the assembly part by the extrusion assembly part, and the stretch film of the appropriate size is limited and fixed by the buckle part, the first adjustment limiting part or the second adjustment limiting part.

4. The adaptive assembly wrapping device for stretch film packaging according to claim 1, characterized in that, The adaptive assembly unit includes a second adaptive assembly mechanism, which includes a first rotating shaft connected to the inside of the gripping part by a bearing. A threaded rod is mounted on the first rotating shaft, and a threaded sleeve is threadedly connected to the threaded rod. A first connecting seat is mounted on the threaded sleeve, and the first connecting seat is fixedly connected to the assembly part. A first knob is mounted on the first rotating shaft.

5. The adaptive assembly wrapping device for stretch film packaging according to claim 1, characterized in that, The adaptive assembly unit includes a third adaptive assembly mechanism, which includes a second rotating shaft disposed inside the gripping part. One end of the second rotating shaft is connected to a traction rod by a bearing, and the end of the traction rod away from the second rotating shaft is equipped with a second connecting seat. The second connecting seat is fixedly connected to the assembly part. A snap-fit ​​plate is installed on the second rotating shaft. Multiple sets of snap-fit ​​seats are symmetrically arranged on both sides inside the gripping part. A second knob is installed on the second rotating shaft.

6. The adaptive assembly wrapping device for stretch film packaging according to claim 5, characterized in that, Both sides of the snap-fit ​​plate are equipped with protrusions, and the inside of the snap-fit ​​base is provided with a groove that matches the protrusions. The protrusions and the grooves are engaged.

7. The adaptive assembly wrapping device for stretch film packaging according to claim 5, characterized in that, The traction rod is slidably connected to a partition, and the partition is fixedly connected to the inner wall of the gripping part. A spring is also provided on the outside of the traction rod.

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