Packaging film easy-to-tear line processing mechanism and packaging equipment

Abstract

The invention relates to the technical field of sanitary appliance packaging, in particular to a packaging film easy-to-tear line processing mechanism and packaging device.The processing mechanism comprises a rack, a tensioning mechanism and a cutting mechanism located on the tensioning mechanism, intermittent cutting edges are arranged on the periphery of a blade of the cutting mechanism, and an easy-to-tear line can be stably formed on a tensioned packaging film; the packaging equipment comprises a top film and bottom film processing and conveying unit, a cotton swab conveying unit, a forming unit and a post-processing unit which are all integrated with the processing mechanisms, so that the easy-to-tear lines are synchronously processed on the two sides of the packaging film, and cotton swab filling and sealed packaging are automatically completed; according to the scheme, the structure is compact, integration to an automatic production line is easy, the production efficiency and the product consistency are effectively improved, and the device is particularly suitable for large-scale production of cotton swabs and other products needing high hygienic standards.

Description

Technical Field

[0001] This invention relates to the field of sanitary product packaging technology, and in particular to a packaging film easy-tear line processing mechanism and packaging equipment. Background Technology

[0002] In the production of cotton swabs, thin films are commonly used for individual packaging. To facilitate tearing by users, easy-tear lines are usually pre-formed on the packaging. Currently, the efficiency and precision of forming easy-tear lines on the packaging film are often limited by the mechanism design. When processing both sides of the outer packaging is required, existing technologies are often cumbersome or involve complex equipment structures, making it difficult to meet the demands of efficient and continuous production while ensuring stability. Therefore, a more rationally structured and easily integrated dedicated easy-tear line processing mechanism and packaging equipment are needed to optimize the production process. Summary of the Invention

[0003] Based on this, the purpose of the present invention is to provide a packaging film easy-tear line processing mechanism and packaging equipment.

[0004] The present invention adopts the following technical solution:

[0005] A packaging film easy-tear line processing mechanism, comprising: frame; The tensioning mechanism includes a first assembly shaft fixed to the frame and a tensioning roller assembly sleeved on the outside of the first assembly shaft; A cutting mechanism is provided above the tensioning mechanism. The cutting mechanism includes a second assembly shaft fixed to the frame and a cutting module slidably connected to the second assembly shaft. The cutting module includes a blade mounting seat and a blade mounted on the blade mounting seat. The blade has intermittent cutting edges around its periphery to form an easy-tear line on the packaging film.

[0006] Preferably, the tensioning roller assembly includes a plurality of rolling bearings arranged axially along the first assembly shaft.

[0007] Preferably, the tensioning mechanism further includes two axial limiting components mounted on the first assembly shaft and respectively abutting against both sides of the rolling bearing.

[0008] Preferably, the axial limiting assembly includes an elastic locking member and a locking bolt sleeved on the first assembly shaft, wherein the locking bolt is used to lock the elastic locking member.

[0009] Preferably, the cutting mechanism further includes a connecting member, which includes a disc body and connecting shafts extending from the disc body to both sides; the blade has a connecting hole extending along its own axial direction at its center, the disc body is rotatably connected to the connecting hole by a bearing, and the connecting shaft is connected to the blade mounting seat.

[0010] Preferably, the blade mounting base includes a sliding part movably connected to the second assembly shaft and two connecting arms, the two connecting arms being symmetrically arranged on both sides of the blade; the connecting shaft is connected to the connecting arms to realize the assembly connection between the connecting member and the blade mounting base.

[0011] Preferably, the connecting arm and the connecting shaft are provided with coaxially arranged insertion holes; the cutting mechanism further includes a locking pin, which is vertically inserted into the insertion hole to lock the connecting arm and the connecting shaft.

[0012] A packaging device includes a top film processing and conveying unit, a bottom film processing and conveying unit, a cotton swab conveying unit, a forming unit, and a post-processing unit. Both the top film processing and conveying unit and the bottom film processing and conveying unit include an unwinding roller and the aforementioned easy-tear line cutting mechanism for the packaging film. The top film processing and conveying unit and the bottom film processing and conveying unit are located upstream of the forming unit and are used to supply the top film and bottom film with the easy-tear lines processed to the forming unit, respectively. The cotton swab conveying unit is located upstream of the forming unit and is used to supply cotton swabs to the forming unit. The post-processing unit is located downstream of the forming unit and is used to seal and package the stacked top film, cotton swabs, and bottom film.

[0013] Preferably, the molding unit includes a molding shaft, and the outer wall of the molding shaft is provided with a receiving groove extending along its own axial direction.

[0014] Preferably, the post-processing unit includes a pressure-pressing module and a hot-melt module arranged in sequence.

[0015] The packaging film tear line processing mechanism and packaging equipment involved in this invention have the following beneficial effects: The packaging film easy-tear line processing mechanism provided by this invention, by setting a cutting mechanism above the tensioning mechanism and using a blade with intermittent cutting edges on the periphery, can stably and accurately imprint easy-tear lines on the tensioned packaging film. The tensioning mechanism ensures that the packaging film is flat and wrinkle-free during processing, while the upper-positioned cutting mechanism uses gravity or pressure to ensure that the intermittent cutting edges make full contact with the film surface, ensuring the consistency of the easy-tear line depth and the reliability of processing. At the same time, the overall structure is compact and easy to integrate into automated production lines, effectively improving processing efficiency and product quality.

[0016] The packaging equipment provided by this invention integrates the aforementioned easy-tear line processing mechanism for packaging film, which performs online easy-tear line processing on the top and bottom films respectively. It also works in conjunction with cotton swab conveying, forming, and post-processing units to achieve full automation from film unwinding, simultaneous processing of easy-tear lines on both sides, precise filling of cotton swabs, to final sealing. This layout avoids the inefficiency and positioning errors caused by offline, step-by-step processing of easy-tear lines in traditional processes, significantly improving production efficiency and ensuring the accuracy and consistency of the easy-tear line positions on both sides of the final packaged product. It is particularly suitable for the large-scale production of products such as cotton swabs that require high hygiene standards and convenient opening experiences. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the packaging equipment of the present invention; Figure 2 This is a schematic diagram of the packaging film easy-tear line processing mechanism of the present invention; Figure 3 for Figure 2 A schematic diagram of the blade and connecting components.

[0018] Numbering on the map: 100 - Top film processing conveyor unit; 110 - Unwinding roller; 120 - Packaging film easy-tear line processing mechanism; 200 - Bottom film processing conveyor unit; 300 - Cotton swab conveyor unit; 310 - Cotton swab conveyor line; 320 - Guide transition roller; 400 - Forming unit; 410 - Forming shaft; 420 - Receiving groove; 500 - Post-processing unit; 510 - Thread pressing module; 520 - Hot melt module; 10-Frame; 20-Tensioning mechanism; 21-First assembly shaft; 22-Tensioning roller assembly; 221-Rolling bearing; 23-Axial limiting assembly; 231-Elastic locking element; 232-Locking bolt; 30-Cutting mechanism; 31-Second assembly shaft; 33-Blade mounting seat; 331-Sliding part; 332-Connecting arm; 34-Blade; 341-Intermittent cutting edge; 342-Connecting hole; 35-Connecting component; 351-Disc body; 352-Connecting shaft. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] In the description of this invention, it should be noted that the terms "vertical direction," "up," "down," and "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or a connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0022] like Figures 2 to 3 As shown, the packaging film easy-tear line processing mechanism 120 of the present invention includes a frame 10, a tensioning mechanism 20, and a cutting mechanism 30. The frame 10 provides a support frame for the tensioning mechanism 20 and the cutting mechanism 30.

[0023] Tensioning mechanism 20 is mounted on frame 10 to provide tension to the passing packaging film, ensuring its flatness during processing. Specifically, tensioning mechanism 20 includes a first assembly shaft 21 fixed to frame 10, a tensioning roller assembly 22 sleeved on the outside of the first assembly shaft 21, and an axial limiting assembly 23. In this embodiment, tensioning roller assembly 22 includes multiple rolling bearings 221 closely arranged axially along the first assembly shaft 21. The outer ring of the rolling bearings 221 contacts the packaging film to achieve low-friction tensioning. Two axial limiting assemblies 23 are provided, respectively mounted on the first assembly shaft 21 and abutting against both sides of the rolling bearing 221 assembly to limit its axial movement. Preferably, axial limiting assembly 23 includes an elastic locking member 231 sleeved on the first assembly shaft 21 and a locking bolt 232. By tightening the locking bolt 232, the elastic locking member 231 clamps the first assembly shaft 21, thereby achieving reliable limiting.

[0024] The cutting mechanism 30 is located above the tensioning mechanism 20. The cutting mechanism 30 includes a second assembly shaft 31 fixed to the frame 10 and a cutting module slidably connected to the second assembly shaft 31. The cutting module can slide axially along the second assembly shaft 31 to adjust the processing position and is fixed by a locking element. The cutting module includes a blade mounting seat 33 and a blade 34 mounted thereon. The blade 34 has intermittent cutting edges 341 around its periphery, meaning the cutting edge consists of multiple notches spaced circumferentially, causing the blade 34 to imprint continuous dotted tear lines on the packaging film.

[0025] Furthermore, the cutting mechanism 30 also includes a connecting member 35. The connecting member 35 includes a disc body 351 and two connecting shafts 352 extending coaxially from the disc body 351 to both sides. The blade 34 has a connecting hole 342 extending axially at its center. The disc body 351 is rotatably connected to the connecting hole 342 via bearings, thereby allowing the blade 34 to rotate freely relative to the connecting member 35. The blade mounting seat 33 includes a sliding part 331 slidably sleeved on the second mounting shaft 31 and two connecting arms 332 extending from the sliding part 331. The two connecting arms 332 are symmetrically arranged on both sides of the blade 34. The ends of the connecting shafts 352 are connected to the corresponding connecting arms 332. In one specific embodiment, the ends of the connecting arms 332 and the connecting shafts 352 are provided with coaxially arranged insertion holes, and the two are quickly assembled and locked by vertically inserted locking pins.

[0026] like Figure 1 As shown, the packaging equipment of the present invention includes a top film processing and conveying unit 100, a bottom film processing and conveying unit 200, a cotton swab conveying unit 300, a forming unit 400, and a post-processing unit 500.

[0027] The top film processing conveying unit 100 and the bottom film processing conveying unit 200 have similar structures, both including an unwinding roller 110 and a packaging film easy-tear line processing mechanism 120 as described above. The top film processing conveying unit 100 is used to supply and process the top film, and the bottom film processing conveying unit 200 is used to supply and process the bottom film. Both are respectively located upstream of the forming unit 400.

[0028] The cotton swab conveying unit 300 is located upstream of the forming unit 400. It includes a cotton swab conveying line 310 and multiple guide transition rollers 320 for continuously and directionally conveying cotton swabs to the forming unit 400.

[0029] The forming unit 400 includes a rotatable forming shaft 410, and the outer peripheral wall of the forming shaft 410 is provided with a plurality of receiving grooves 420 extending along its axial direction. During operation, the bottom film is first laid into the bottom of the receiving groove 420, then the cotton swab is placed on the bottom film, and finally the top film is covered on it, forming a three-layer structure of top film, cotton swab and bottom film.

[0030] The post-processing unit 500 is located downstream of the forming unit 400 and is used to seal and form the three-layer structure. The post-processing unit 500 includes a crease module 510 and a heat-sealing module 520 arranged sequentially along the material travel direction. The crease module 510 presses slit lines into the packaging film, while the heat-sealing module 520 heat-seals the edges of the packaging film, ultimately forming an independent cotton swab packaging product with easy-tear lines on both sides.

[0031] The working principle of the packaging equipment involved in this invention is as follows: After the equipment starts, the forming shaft 410 rotates continuously. First, the bottom film processing and conveying unit 200 outputs the bottom film with pre-processed easy-tear lines and precisely lays it into the bottom of the receiving groove 420 of the forming shaft 410. Then, the cotton swab conveying unit 300 synchronously conveys individual cotton swabs and places them on the bottom film in the receiving groove 420. Next, the top film processing and conveying unit 100 outputs the top film with pre-processed easy-tear lines, covering the cotton swabs and bottom film, thus forming a stacked structure of top film-cotton swab-bottom film in the receiving groove 420. As the forming shaft 410 continues to rotate, this stacked structure enters the post-processing unit 500: first, the pressing module 510 presses out the dividing lines at predetermined positions, and then the hot-melt module 520 heat-seals the perimeter. Finally, after cutting or separating along the cutting lines, individual sealed finished cotton swab packages with pre-made easy-tear lines on both sides are obtained. The entire process is continuous and automatic, realizing integrated and efficient production from film material processing to finished product packaging.

[0032] The above description merely illustrates preferred technical solutions of the present invention, and while the description is relatively specific and detailed, it should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and the present invention also intends to include these modifications and variations.

Claims

1. A mechanism for processing easy-tear lines on packaging film, characterized in that, include: frame; The tensioning mechanism includes a first assembly shaft fixed to the frame and a tensioning roller assembly sleeved on the outside of the first assembly shaft; A cutting mechanism is provided above the tensioning mechanism. The cutting mechanism includes a second assembly shaft fixed to the frame and a cutting module slidably connected to the second assembly shaft. The cutting module includes a blade mounting base and a blade mounted on the blade mounting base; the blade has intermittent cutting edges around its periphery to form an easy-tear line on the packaging film.

2. The packaging film easy-tear line processing mechanism according to claim 1, characterized in that, The tensioning roller assembly includes a plurality of rolling bearings arranged axially along the first assembly shaft.

3. The packaging film easy-tear line processing mechanism according to claim 2, characterized in that, The tensioning mechanism also includes two axial limiting components mounted on the first assembly shaft and respectively abutting against both sides of the rolling bearing.

4. The packaging film easy-tear line processing mechanism according to claim 3, characterized in that, The axial limiting assembly includes an elastic locking member and a locking bolt sleeved on the first assembly shaft, wherein the locking bolt is used to lock the elastic locking member.

5. The packaging film easy-tear line processing mechanism according to claim 1, characterized in that, The cutting mechanism further includes a connecting component, which includes a disc body and connecting shafts extending from the disc body to both sides; the blade has a connecting hole extending along its own axial direction at its center, the disc body is rotatably connected to the connecting hole by a bearing, and the connecting shaft is connected to the blade mounting seat.

6. The packaging film easy-tear line processing mechanism according to claim 5, characterized in that, The blade mounting base includes a sliding part movably connected to the second assembly shaft and two connecting arms, the two connecting arms being symmetrically arranged on both sides of the blade; the connecting shaft is connected to the connecting arms to realize the assembly connection between the connecting component and the blade mounting base.

7. The packaging film easy-tear line processing mechanism according to claim 6, characterized in that, The connecting arm and the connecting shaft are provided with coaxial insertion holes; the cutting mechanism also includes a locking pin, which is vertically inserted into the insertion hole to lock the connecting arm and the connecting shaft.

8. A packaging equipment, characterized in that, The device includes a top film processing and conveying unit, a bottom film processing and conveying unit, a cotton swab conveying unit, a forming unit, and a post-processing unit. Both the top film processing and conveying unit and the bottom film processing and conveying unit include an unwinding roller and a packaging film easy-tear line cutting mechanism as described in any one of claims 1 to 7. The top film processing and conveying unit and the bottom film processing and conveying unit are located upstream of the forming unit and are used to supply the forming unit with the top film and bottom film processed with easy-tear lines, respectively. The cotton swab conveying unit is located upstream of the forming unit and is used to supply cotton swabs to the forming unit. The post-processing unit is located downstream of the forming unit and is used to seal and package the stacked top film, cotton swabs, and bottom film.

9. The packaging equipment according to claim 8, characterized in that, The molding unit includes a molding shaft, and the outer wall of the molding shaft is provided with a receiving groove extending along its own axial direction.

10. The packaging equipment according to claim 8, characterized in that, The post-processing unit includes a pressure-pressing module and a hot-melt module arranged in sequence.

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