Film folding structure and packaging machine
The film folding structure, which combines a pusher plate and an air blowing device, solves the problem that film packaging machines cannot completely cover the edges and bottom of objects, achieving seamless film coverage and tight packaging, and improving the aesthetics and sealing of the packaging.
Patent Information
- Application Number
- CN202520052487.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-09
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2035-01-09
AI Technical Summary
When using existing film packaging machines, especially for curved objects, the film cannot completely cover the edges and bottom of the object, resulting in loose packaging that affects both appearance and sealing.
The film folding structure combines a pusher plate and an air blowing device. The pusher plate moves from the edge of the object toward the center to push the drooping film, while the air blowing device generates a directional airflow to assist in folding the part of the film that cannot be covered by the pusher plate.
It achieves seamless coverage of the object with the film, improves the tightness and sealing of the packaging, and ensures the integrity of the packaging and the preservation effect.
Smart Images
Figure CN223822086U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of packing machine, concretely relates to film folding structure. BACKGROUND
[0002] Current film packing machine usually covers preservative film on the object to be packed through mechanical arm or push plate simulating the action of human hand, and the mechanical folding technology depends on fixed movement track, so that the film cannot completely wrap all surfaces of the object, especially the edge and bottom. SUMMARY
[0003] One object of the utility model is to provide a film folding structure with better film packaging effect.
[0004] To achieve the above-mentioned object, the film folding structure is used for folding the film on the object to be packed, the part of the film not covering the object to be packed forms a hanging part, and the film folding structure comprises a push plate and a blowing device, the push plate is arranged to be capable of moving from the edge of the object to be packed to the center of the object to be packed, and then pushing the hanging part to be folded; the blowing device is used for generating airflow towards one side of the object to be packed, so as to fold the hanging part by means of air power.
[0005] In one or more embodiments, the blowing device comprises a blowing component and an airflow guiding device, the blowing component is used for generating airflow, and the airflow guiding device is used for adjusting the direction and intensity of the airflow.
[0006] In one or more embodiments, the blowing device further comprises a gas guide pipe in communication with the blowing component.
[0007] In one or more embodiments, the airflow generated by the blowing device is located below the push plate.
[0008] In one or more embodiments, the blowing device is located below the push plate.
[0009] In one or more embodiments, the structure comprises a pair of push plates located on the front and rear sides or left and right sides of the object to be packed.
[0010] In one or more embodiments, the structure comprises two pairs of push plates respectively located on the front and rear sides and left and right sides of the object to be packed.
[0011] Another objective of this invention is to provide a packaging machine, comprising a bracket, a film, and the aforementioned film folding structure. The bracket supports the item to be packaged and is configured to allow the item to move upwards. The film is located on the upward movement path of the item to be packaged, so that the film initially covers the item and forms a hanging portion. The pusher plate of the film folding structure scoops up the item to be packaged on the bracket by moving from the edge of the item to the center of the item, thereby replacing the bracket to support the item.
[0012] In one or more embodiments, the blowing device is located inside the housing of the packaging machine.
[0013] The aforementioned film folding structure uses the mechanical movement of a pusher plate to fold the drooping film at the edge of the item to be packaged inward. Then, a directional airflow generated by a blowing device further pushes this part of the drooping film inward with the help of air force. In particular, for the part of the drooping film that the pusher plate cannot fold completely, the directional airflow can compensate for the part that cannot be pushed by the pusher plate, thereby increasing the film area covering the item to be packaged and improving the packaging effect. Attached Figure Description
[0014] The above and other features, properties and advantages of this utility model will become more apparent from the following description taken in conjunction with the accompanying drawings and embodiments, wherein:
[0015] Figure 1 This is a diagram showing the positional relationship between the item to be packaged, the film, and the pusher plate;
[0016] Figure 2 This is a side view of the push plate and the item to be packaged;
[0017] Figure 3 It is a side view of the air blowing device, the push plate, and the item to be packaged;
[0018] Figure 4 It is a perspective view of the push plate and the item to be packaged;
[0019] Figure 5 It is a perspective view of the air blowing device, the push plate, and the item to be packaged;
[0020] Figures 6A-6B This is a schematic diagram illustrating the movement of the bracket, film, and film folding structure.
[0021] Figures 7A-7D This is a schematic diagram of different directions of air force.
[0022] Symbol marking explanation
[0023] 1. Items to be packaged
[0024] 2 films
[0025] 3, 3' drooping part
[0026] 11. Push plate
[0027] 12. Air blowing device
[0028] 14 pallets
[0029] 121 Air blowing component
[0030] 122 Airflow guiding device Detailed Implementation
[0031] The present invention will be further described below with reference to specific embodiments and accompanying drawings. More details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention can obviously be implemented in many other ways different from those described herein. Those skilled in the art can make similar extensions and derivations based on actual application situations without departing from the spirit of the present invention. Therefore, the scope of protection of the present invention should not be limited by the content of this specific embodiment.
[0032] It should be noted that these and other accompanying drawings are merely examples and are not drawn to scale, and should not be used as a limitation on the scope of protection of this utility model.
[0033] When a film packaging machine uses a traditional robotic arm to push the film to wrap the object, the film may not adhere well to the product, especially when packaging curved surfaces. In such cases, parts of the film may not fit properly, causing wrinkles and affecting the packaging's appearance and seal. Furthermore, due to the lack of an effective overlapping mechanism, the film adheres poorly at the front-to-back and side-to-side junctions, making the packaging prone to loosening and compromising food preservation.
[0034] To address the aforementioned problems, this disclosure proposes a thin-film folding structure, such as... Figures 1 to 3 As shown, a film 2 is used to fold the packaged item 1. The packaged item 1 includes, but is not limited to, fresh food, fruits, vegetables, etc., and can be of regular or irregular shape. In the initial state, the film 2 cannot cover the entire surface of the packaged item 1, and the portion of the film that does not cover the packaged item 1 forms a drooping portion 3.
[0035] The film folding structure includes a pusher plate 11 and an air blowing device 12. The pusher plate 11 is configured to move from the edge E of the item to be packaged toward the center O of the item to be packaged, thereby pushing the drooping part 3 to fold it. Preferably, the structure includes a pair of pushers 11 located on the front and rear sides or left and right sides of the item to be packaged 1, with the pushers facing each other and arranged on the ground; or the structure includes two pairs of pushers, located on the front and rear sides and left and right sides of the item to be packaged, respectively.
[0036] whenFigure 1 When the pair of push plates 11 located on the left and right sides of the item to be packaged 1 begin to move towards the center of the item being packaged, the sides of the film hanging part 3 will be gradually folded over to ensure coverage of the left and right sides and part of the bottom surface of the item to be packaged 1.
[0037] When the length of the pair of push plates 11 is sufficient to contact the center O of the item to be packaged 1, the drooping portion 3 can be completely pushed by the push plates until it completely covers the bottom surface of the item to be packaged 1. However, the length of the push plates is limited, and the film area that cannot be reached cannot cover the item to be packaged 1 well, and a drooping portion 3' will still be formed, such as... Figure 2 As shown.
[0038] For portions of the film that are difficult to mechanically move, an air-blowing device is used to generate an airflow toward one side of the item to be packaged, thereby folding the hanging portion by pneumatic force. For example, the air-blowing device 12 in this folding structure generates a directional airflow toward the center O of the item to be packaged, thereby pushing the hanging portion inward by pneumatic force. The directional airflow pushes the suspended film inward to contract, achieving the folding effect. Alternatively, as... Figures 7A-7D As shown, different directions of air force F are generated.
[0039] Understandably, the airflow generated by the blowing device 12 is located below the push plate 11, so as to further push the drooping part 3' inward with the help of air force.
[0040] Thus, with the assistance of airflow, the film can be smoothly folded even in areas inaccessible to mechanical pushers. The combination of mechanical action and airflow folding technology enables the film to effectively cover the object to be packaged, especially for irregularly shaped objects, ensuring a tight cover and effective wrapping of all surfaces.
[0041] In some embodiments, the blowing device 12 includes a blowing component 121 and an airflow guide device 122 for adjusting the direction and intensity of the airflow, wherein the blowing component 121 is used to generate airflow.
[0042] The air-blowing components can appear independently or in pairs. For example, a pair of air-blowing components are located on the outer side of each pusher plate and are directed towards the drooping film through air guide tubes connected to the air-blowing components. The air-blowing components can also be connected to the lower surface of the pusher plate and move with the pusher plate. When the pusher plate is not moving, this prevents the distance between the air-blowing components and the drooping part from being too large, which would affect the blowing effect. A pair of air-blowing components can blow air simultaneously or in a sequential manner. This directional airflow generates an inward thrust, pushing the drooping film to contract towards the center of the object. At the same time, under the action of the airflow guiding device, the opposing force of the airflow is prevented from creating turbulence, allowing the film to fold smoothly and fit tightly without mechanical contact, ensuring that the airflow can effectively act on the film.
[0043] Airflow guiding devices include, but are not limited to, guide tubes, baffles, and nozzles.
[0044] Ultimately, the folded film forms an effective bond with the object's surface, ensuring the integrity and airtightness of the packaging, thereby extending the shelf life of the packaged item.
[0045] Based on the above description of the film folding structure, we can also understand a packaging machine, such as... Figures 6A-6B As shown, the packaging machine includes the aforementioned film folding structure, as well as a bracket 1 and a film 2. The bracket 14 is used to support the item to be packaged 1, and is configured to allow the item to be packaged 1 to move upward. The flat film 2 is located on the upward movement path of the item to be packaged 1, so that with the rise of the item to be packaged 1, the film 2 initially covers the item to be packaged 1 and forms a hanging portion 3.
[0046] The pusher plate 11 of the film folding structure lifts the packaged item 1 from the edge of the packaged item 1 towards the center of the packaged item 1, thereby replacing the support of the support of the packaged item 14 and re-supporting the packaged item 1. It can be understood that in this process, the pusher plate 11 pushes the drooping film located at the edge of the packaged item to fold inward by its own movement, thereby achieving further packaging of the film.
[0047] Furthermore, by using an air blowing device with a folded film structure, a directional airflow is released. The airflow is guided to both sides of the draped film through an air guide tube, causing the draped film to be folded further, resulting in a better film wrapping effect.
[0048] The packaging machine's film folding structure combines mechanical folding and airflow folding technologies, achieving seamless coverage of the cling film, significantly improving the tightness of the packaging, and avoiding the problems of film hanging and wrinkles in traditional packaging methods. At the same time, the use of brackets and push plates makes the packaging process more efficient and flexible, and can meet the packaging needs of objects of different shapes.
[0049] It should be noted that the use of terms such as "first" and "second" to define the components in the above content is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this application.
[0050] Furthermore, this application uses specific terms to describe embodiments of the application. For example, "an embodiment," "one embodiment," and / or "some embodiments" refer to a particular feature, structure, or characteristic related to at least one embodiment of the application. Therefore, it should be emphasized and noted that "an embodiment," "one embodiment," or "an alternative embodiment" mentioned twice or more in different locations in this specification do not necessarily refer to the same embodiment. In addition, certain features, structures, or characteristics in one or more embodiments of the application can be appropriately combined.
[0051] While the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make possible variations and modifications without departing from the spirit and scope of the present invention. Therefore, any modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention shall fall within the protection scope defined by the claims of the present invention.
Claims
1. A film folding structure for folding a film on an item to be packaged, wherein the portion of the film not covering the item to be packaged forms a drooping portion, characterized in that, include: A pusher is configured to move from the edge of the item to be packaged toward the center of the item to be packaged, thereby pushing the drooping portion to fold it; as well as An air blowing device is used to generate an airflow toward one side of the item to be packaged, so as to fold the drooping part by means of air force.
2. The thin film folding structure as described in claim 1, characterized in that, The blowing device includes a blowing component and an airflow guiding device. The blowing component is used to generate airflow, and the airflow guiding device is used to adjust the direction and intensity of the airflow.
3. The thin film folding structure as described in claim 2, characterized in that, The air blowing device also includes an air guide tube that communicates with the air blowing component.
4. The thin film folding structure as described in claim 1, characterized in that, The airflow generated by the blowing device is located below the push plate.
5. The thin film folding structure as described in claim 1, characterized in that, The air blowing device is located below the push plate.
6. The thin film folding structure as described in claim 1, characterized in that, The structure includes a pair of push plates located on the front and rear or left and right sides of the item to be packaged, with the push plates facing each other and arranged on the ground.
7. The thin film folding structure as described in claim 1, characterized in that, The structure includes two pairs of push plates, located at the front and rear sides and left and right sides of the item to be packaged, respectively.
8. A packaging machine, characterized in that, include: A bracket for supporting the item to be packaged, the bracket being configured to allow the item to be packaged to move upwards; The film is positioned along the upward movement path of the item to be packaged, so that the film initially covers the item to be packaged and forms a hanging portion; as well as The thin film folding structure as described in any one of claims 1-7; The pusher plate of the film folding structure scoops up the packaged item located on the bracket by moving from the edge of the packaged item toward the center of the packaged item, thereby replacing the bracket to support the packaged item.
9. The packaging machine as described in claim 8, characterized in that, The air blowing device is located inside the housing of the packaging machine.