Bagging film hot melt slitting coaxial winding equipment

Abstract

The utility model discloses a kind of bagging film hot melt slitting coaxial winding equipment, including rack, and the unwinding mechanism, hot cutting mechanism and winding mechanism installed on rack in turn, unwinding mechanism is used to unwind bagging film;Hot cutting mechanism is configured to be able to along unwinding direction to the bagging film of unwinding hot melt slitting;Winding mechanism is configured to be able to the each sub bagging film of hot melt slitting coaxial winding;Compression roller mechanism, installed on rack, and between hot cutting mechanism and winding mechanism, compression roller mechanism is configured to be able to to the each sub bagging film of hot melt slitting compact and transport;Cooling mechanism, installed on rack, and between compression roller mechanism and winding mechanism, cooling mechanism is configured to be able to to the each sub bagging film after compacting cooling treatment;Ensure the sealing property of sub bagging film seal and slitting efficiency, production efficiency and practicality are high, good universality, reduce energy consumption and production cost, improve the finished product rate of double-layer bagging film slitting.

Description

Technical Field

[0001] This utility model relates to the field of film cutting technology, and in particular to a hot melt slitting and coaxial winding device for bagged films. Background Technology

[0002] Polyethylene (PE) film is widely used in the field of pipe packaging as a high-performance packaging material. Pipe packaging is mainly divided into two types: single-layer film wrapping and double-layer bagging. With the increasing global environmental protection requirements, double-layer bagged PE film has gradually become the mainstream choice in the market due to its excellent barrier properties and recyclability, especially in the field of high-end pipe packaging where demand has surged.

[0003] However, in the traditional PE film production process, blown film machines, as the main production equipment, mainly adopt a single-machine, single-specification production mode. This means that when it is necessary to produce PE films of different widths or layers, an independent production line must be completed, resulting in low equipment utilization. At the same time, a large number of machines are idle when not producing PE films of specific specifications, resulting in resource waste. In addition, since each production line has to operate independently, energy consumption is high, and when switching production specifications, complex equipment adjustments and parameter settings are required, resulting in long downtime, low production efficiency, and high maintenance costs.

[0004] To address the problems in traditional production processes, current technologies typically involve producing large-format PE films using a blown film machine, followed by slitting them into smaller sizes using a cold-cutting blade. This reduces the need for smaller-format production equipment, conserves resources, improves equipment utilization, lowers energy consumption, and minimizes downtime and maintenance costs when switching between specifications. However, existing film slitting technologies still have the following drawbacks: Current cold-cutting blade technology is only suitable for single-layer PE films. When dealing with double-layer composite bagged PE films, the cold-cutting blade can easily damage the heat-fused adhesive layer between the film layers. This not only affects the overall structural stability of the double-layer PE film but also leads to low slitting efficiency and difficulty in ensuring sealing quality, resulting in decreased sealing performance, high defect rates, and severely impacting packaging quality. This fails to meet the high-quality requirements of high-end pipe packaging. Utility Model Content

[0005] The purpose of this utility model is to provide a hot melt slitting and coaxial winding device for bagged films, so as to solve the problems of easy damage to the hot melt bonding layer between the film layers when using cold cutting technology to process double-layer composite bagged PE films, which affects the structural stability of bagged PE films, resulting in low slitting efficiency, poor sealing quality, reduced sealing performance, and high defect rate of finished products.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A hot-melt slitting and coaxial winding device for bagged films includes:

[0008] The machine includes a frame, an unwinding mechanism, a hot-cutting mechanism, and a winding mechanism, which are sequentially mounted on the frame. The unwinding mechanism is used to unwind the bagging film. The hot-cutting mechanism is configured to perform heat-melt slitting on the unwound bagging film along the unwinding direction to slit a single bagging film into two or more sub-bagging films. The winding mechanism is configured to coaxially wind up each heat-melt-slit sub-bagging film.

[0009] Based on the aforementioned technical means, the hot-cutting mechanism rapidly heat-melts and cuts the bagging film, avoiding the damage to the double-layer composite film caused by traditional cold-cutting methods. This ensures the sealing performance and cutting efficiency of the sub-bagging film. Furthermore, through the synergistic action of the hot-cutting mechanism, the unwinding mechanism, and the rewinding mechanism, the hot-cutting mechanism can stably and quickly cut films of different widths or numbers of layers according to actual needs to obtain sub-films of corresponding specifications and sizes. This method is highly efficient, practical, versatile, and reduces energy consumption and production costs. In addition, the rewinding mechanism enables multiple sub-bagging films to be wound in parallel and synchronously on the same axis, eliminating the problem of frequent manual switching and changing of the rewinding mechanism required by traditional dual-axis layered rewinding. This improves production continuity and rewinding quality, while simplifying the operation process, reducing labor costs and downtime losses, and comprehensively improving the efficiency and yield of double-layer bagging film cutting and rewinding.

[0010] Furthermore, the unwinding mechanism includes an unwinding shaft and a first driving device. The unwinding shaft is rotatably mounted on the frame and winds up the bagged film. The first driving device is mounted on the frame and connected to the unwinding shaft. The first driving device is configured to drive the unwinding shaft to rotate in order to unwind the bagged film.

[0011] Based on the above-mentioned technical means, the unwinding shaft is used to wind up the bagging film to be cut. During the cutting process, the first driving device drives the unwinding shaft to rotate to realize the unwinding of the bagging film. This can stably and accurately control the unwinding progress of the bagging film, ensure the smoothness and continuity of the unwinding operation, effectively avoid problems such as jamming and slippage during the unwinding process, provide a reliable guarantee for the stable operation of subsequent cutting, and help improve the efficiency and quality of the entire cutting process.

[0012] Furthermore, the hot cutting mechanism includes at least one hot cutting tool and a mounting shaft. The mounting shaft is mounted on the frame and arranged parallel to the unwinding shaft. Each of the hot cutting tools is mounted on the mounting shaft and distributed along the axial direction of the mounting shaft. The cutting direction of each hot cutting tool is perpendicular to the axial direction of the mounting shaft. Each hot cutting tool is configured to be able to move along the axial direction of the mounting shaft to adjust the spacing between two adjacent hot cutting tools.

[0013] Based on the above technical means, by aligning the mounting shaft parallel to the unwinding shaft, and distributing each hot-cutting blade along the axial direction of the mounting shaft with the cutting direction perpendicular to the mounting shaft, the structure is compact, ensuring that the cutting path of the bagging film meets the preset requirements. Furthermore, each hot-cutting blade can move along the axial direction of the mounting shaft to adjust the adjacent spacing, offering high flexibility and versatility. It can adapt to the production needs of bagging films of different specifications without the need for additional blade replacement or complex debugging, shortening production preparation time, reducing equipment downtime costs, and improving the versatility and efficiency of production.

[0014] Furthermore, the hot cutting mechanism also includes two first guide rails and two second drive devices. The two first guide rails are arranged opposite to each other and are respectively mounted on the frame. A first slider is slidably arranged on each of the two first guide rails. The two ends of the mounting shaft are respectively connected to one of the first sliders. The two second drive devices are respectively mounted on one of the first guide rails and connected to the adjacent first slider. The second drive devices are configured to drive the first slider to move along the guide direction of the first guide rail to adjust the distance between each hot cutting blade and the bagging film.

[0015] Based on the above technical means, the stable installation and linear movement guidance of the mounting shaft are achieved through two first guide rails and a first slider, ensuring the smoothness and accuracy of the hot cutting cutter. Under the synchronous drive of two second drive devices, the first slider can slide along the guide direction of the first guide rail, driving the mounting shaft to move so as to flexibly and accurately adjust the distance between the hot cutting cutter and the bagging film. This can not only meet the cutting requirements of films of different thicknesses, but also optimize the cut quality by dynamically adjusting the cutting pressure, effectively reducing the defect rate of film edge burrs, hot melt adhesion, etc. The structure is simple, easy to adjust, and highly practical.

[0016] Furthermore, it also includes: a pressure roller mechanism, which is mounted on the frame and located between the hot cutting mechanism and the winding mechanism, the pressure roller mechanism being configured to press and convey the individual sub-bag films that have been hot melt-cut;

[0017] A cooling mechanism is mounted on the frame and located between the pressure roller mechanism and the winding mechanism. The cooling mechanism is configured to cool each sub-bag film after it has been pressed.

[0018] Based on the above technical means, the sub-bag film after hot melt slitting is dynamically pressed and conveyed by the pressure roller mechanism, which ensures the overall flatness of the slitting sub-bag film and the stability of the heat-sealing edge adhesion, improves the sealing quality of the sub-bag film, and thus ensures the sealing performance of the sub-bag film, resulting in high production efficiency; the cooling mechanism cools the flattened sub-bag film in time, reduces the temperature of the heat-sealing edge of the sub-bag film, and prevents deformation and mutual adhesion.

[0019] Furthermore, the pressure roller mechanism includes two pressure roller bodies, both of which are arranged parallel to the unwinding shaft and rotatably mounted on the frame. A gap is provided between the two pressure roller bodies for the sub-bag films after heat melting and slitting to pass through. The two pressure roller bodies are configured to press and convey the passing sub-bag films.

[0020] Based on the above technical means, in practical applications, when the slit sub-bag film passes through the gap between the two pressure roller bodies, the two pressure roller bodies rotate relative to each other and apply pressure to the sub-bag film while conveying it, so as to press and flatten the sub-bag film, making the cut edge of the heat-cut sub-bag film flat, and at the same time, the cut edge of the sub-bag film is more firmly bonded, improving the sealing quality and sealing performance.

[0021] Furthermore, the pressure roller mechanism also includes two second guide rails and two third drive devices. The two second guide rails are arranged opposite to each other and are respectively mounted on the frame. Second sliders are slidably arranged on the two second guide rails. The two ends of one of the pressure roller bodies are respectively connected to one of the second sliders. The two third drive devices are respectively mounted on one of the second guide rails and connected to the adjacent second slider. The third drive devices are configured to drive the second sliders to move along the guide direction of the second guide rails to adjust the gap between the two pressure roller bodies.

[0022] Based on the aforementioned technical means, by using two second guide rails in conjunction with a second slider, the stable installation and linear movement guidance of one of the pressure roller bodies are achieved, ensuring the smoothness and precision of the movement of the pressure roller body. Under the synchronous driving action of two third drive devices, the pressure roller body can slide along the guiding direction of the second guide rails, so as to flexibly and precisely adjust the distance between the two pressure roller bodies, thereby meeting the pressing requirements of sub-bag films of different thicknesses, ensuring overall flatness and sealing performance. The structure is simple, easy to adjust, and highly practical. Among them, the two third drive devices can be cylinders.

[0023] Furthermore, the cooling mechanism includes a water-cooled circulating roller, which is arranged parallel to the unwinding shaft and rotatably mounted on the frame. Each of the sub-bag films between the pressure roller mechanism and the winding mechanism is configured to bypass the water-cooled circulating roller. The water-cooled circulating roller is used to communicate with an external cold water circulation system. The water-cooled circulating roller is configured to cool down each of the bypassed sub-bag films to prevent adhesion problems between the sub-bag films.

[0024] Based on the aforementioned technical means, the water-cooled circulating rollers promptly cool the sub-bag film as it passes through, reducing the temperature at the heat-sealing point. This not only prevents deformation of the sub-bag film but also reduces the likelihood of the sub-bag film sticking together during winding. Specifically, in practical applications, the water-cooled circulating rollers are connected to the inlet and outlet of an external cold water circulation system. The external cold water circulation system drives cold water to circulate through the water-cooled circulating rollers, continuously reducing the surface temperature of the rollers. This allows the compressed sub-bag film to quickly reduce the temperature at the heat-sealing point as it passes through the water-cooled circulating rollers, avoiding deformation and sticking problems caused by excessive temperature and ensuring the production quality of the sub-bag film.

[0025] Furthermore, the winding mechanism includes at least one winding shaft and a fourth drive device. Each winding shaft is arranged parallel to the unwinding shaft and rotatably mounted on the frame. The fourth drive device is configured to be driven to connect with one of the winding shafts to drive the winding shaft to rotate so as to coaxially wind each of the sub-bag films after being cooled by the water-cooled circulating roller onto the winding shaft.

[0026] Based on the aforementioned technical means, in practical applications, the fourth drive device drives one of the take-up shafts to rotate, allowing the cooled sub-bag films to be wound side-by-side and coaxially onto the take-up shaft. The fourth drive device stably and precisely controls the winding progress of the take-up shaft. With the coordination of the unwinding shaft, this not only ensures smooth transport of the bag films but also guarantees the smoothness and continuity of the winding of each sub-bag film, improving the efficiency and quality of the entire process. When one take-up shaft finishes winding, the operator simply cuts the sub-bag film and then winds all the cut sub-bag films onto another spare take-up shaft, repeating the winding action to reduce downtime and improve production efficiency. The first drive device can be a magnetic powder controller or a drive motor.

[0027] Furthermore, it also includes at least one first guide conveyor roller, each of which is rotatably mounted on the frame and arranged parallel to the unwinding shaft. Each of the first guide conveyor rollers is evenly distributed between the unwinding mechanism and the hot cutting mechanism, and the bagging film between the unwinding mechanism and the hot cutting mechanism is configured to pass around each of the first guide conveyor rollers in sequence. Each of the first guide conveyor rollers is configured to flatten and convey the bagging film that has passed around.

[0028] Based on the above technical means, in practical applications, the unwound bagging film is smoothly and stably conveyed from the unwinding shaft to the hot-cutting mechanism for hot-melt slitting through each first guide conveyor roller. Each first guide conveyor roller has a supporting, guiding and tensioning function between the unwinding mechanism and the hot-cutting mechanism, which transforms the relaxed and bent state of the continuous bagging film unwound by the unwinding mechanism into a stable and tensioned state. This eliminates the sagging wrinkles and lateral displacement of the bagging film caused by its own weight or inertia, ensuring that the bagging film enters the hot-cutting mechanism in a flat posture, thereby improving the hot-cutting slitting accuracy and the finished product qualification rate of the sub-bagging film.

[0029] Furthermore, it also includes at least one second guide conveyor roller, each of which is rotatably mounted on the frame and arranged parallel to the unwinding shaft. Each of the second guide conveyor rollers is evenly distributed between the cooling mechanism and the winding mechanism, and each sub-bag film between the cooling mechanism and the winding mechanism is configured to pass around each of the second guide conveyor rollers in sequence. Each of the second guide conveyor rollers is configured to flatten and convey the passed sub-bag films.

[0030] Based on the above technical means, in practical applications, the cooled sub-bag film is smoothly and stably conveyed from the cooling mechanism to the winding mechanism by each second guide conveyor roller. Each second guide conveyor roller has a supporting, guiding and tensioning function between the cooling mechanism and the winding mechanism, so that the cooled and continuously conveyed sub-bag film changes from a relaxed and bent state to a stable and tensioned state. This eliminates the sagging and lateral deviation of the sub-bag film caused by its own weight or inertia, ensuring that the sub-bag film enters the winding mechanism in a flat posture and achieves synchronous and coaxial winding, thereby improving the hot cutting accuracy and the finished product qualification rate of the sub-bag film.

[0031] The beneficial effects achieved by this utility model are:

[0032] This invention utilizes a hot-cutting mechanism for rapid heat-melt slitting of the bagging film, avoiding the damage to the double-layer composite film caused by traditional cold-cutting methods. This ensures the sealing performance and slitting efficiency of the sub-bagging film. Furthermore, through the coordinated action of the hot-cutting mechanism, the unwinding mechanism, and the rewinding mechanism, the hot-cutting mechanism can stably and quickly slit films of different widths or numbers of layers according to actual needs, obtaining sub-films of corresponding specifications and sizes. This approach is highly efficient, practical, versatile, and reduces energy consumption and production costs. In addition, the rewinding mechanism achieves simultaneous rewinding of multiple sub-bagging films via coaxial operation, eliminating the problem of frequent manual switching required by traditional biaxial layered rewinding. This improves production continuity and rewinding quality, while simplifying the operation process, reducing labor costs and downtime losses, and comprehensively improving the efficiency and yield of double-layer bagging film slitting and rewinding. Attached Figure Description

[0033] Figure 1 This is a three-dimensional isometric view of the entire utility model;

[0034] Figure 2 This is a cross-sectional view of the entire utility model;

[0035] Figure 3 This is a schematic diagram of the structure of the hot cutting mechanism of this utility model;

[0036] Figure 4 This is a schematic diagram of the pressure roller mechanism of this utility model.

[0037] Among them, 01-bag film; 1-frame; 2-unwinding mechanism; 21-unwinding shaft; 22-first drive device; 3-hot cutting mechanism; 31-hot cutting tool; 32-mounting shaft; 33-first guide rail; 34-second drive device; 35-first slider; 41-rewinding shaft; 5-pressure roller mechanism; 51-pressure roller body; 52-second guide rail; 53-third drive device; 54-second slider; 6-cooling mechanism; 7-first guide conveyor roller; 8-second guide conveyor roller.

[0038] The accompanying drawings are for illustrative purposes only and should not be construed as limiting the scope of this patent. To better illustrate this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings. The same or similar reference numerals correspond to the same or similar components. The terms describing positional relationships in the drawings are for illustrative purposes only and should not be construed as limiting the scope of this patent. Detailed Implementation

[0039] It should be noted that, unless otherwise specified, the embodiments and technical features in the embodiments of this application can be combined with each other, and the detailed descriptions in the specific embodiments should be understood as explanations of the purpose of this application and should not be regarded as undue limitations on this application.

[0040] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the specific technical solutions of this application will be further described in detail below with reference to the accompanying drawings of the embodiments of this application. The following embodiments are used to illustrate this application, but are not intended to limit the scope of this application.

[0041] In the embodiments of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of this application, unless otherwise stated, "multiple" means two or more.

[0042] In the embodiments of this application, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral part; it can be a direct connection or an indirect connection through an intermediate medium.

[0043] In embodiments of this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0044] In the embodiments of this application, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design that is described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or design. Specifically, the use of the terms "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0045] The technical solution of this utility model will be described in detail below with reference to the accompanying drawings.

[0046] Example 1

[0047] like Figure 1 and Figure 2 As shown, a hot-melt slitting and coaxial winding device for bagging film includes: a frame 1, an unwinding mechanism 2, a hot-cutting mechanism 3, and a winding mechanism. The unwinding mechanism 2, the hot-cutting mechanism 3, and the winding mechanism are sequentially mounted on the frame 1. The unwinding mechanism 2 is used to unwind bagging film 01. The hot-cutting mechanism 3 is configured to perform hot-melt slitting on the unwound bagging film 01 along the unwinding direction to slit a single bagging film 01 into two or more sub-bagging films. The winding mechanism is configured to coaxially wind up each of the hot-melt slit sub-bagging films. A pressure roller mechanism 5 is mounted on the frame 1 and located between the hot-cutting mechanism 3 and the winding mechanism. The pressure roller mechanism 5 is configured to press and convey each of the hot-melt slit sub-bagging films. A cooling mechanism 6 is mounted on the frame 1 and located between the pressure roller mechanism 5 and the winding mechanism. The cooling mechanism 6 is configured to cool each of the pressed sub-bagging films.

[0048] This embodiment uses a hot-cutting mechanism 3 to quickly heat-melt and slit the sub-bag film 01, avoiding the damage to the double-layer composite film caused by traditional cold-cutting methods, ensuring the sealing performance and slitting efficiency of the sub-bag film. A pressure roller mechanism 5 dynamically presses and conveys the slit sub-bag film, ensuring the overall flatness of the sub-bag film and the stability of the heat-sealed edge adhesion, improving the sealing quality of the sub-bag film, thus guaranteeing its sealing performance and high production efficiency. A cooling mechanism 6 cools the flattened sub-bag film in a timely manner, reducing the temperature of the heat-sealed edge, preventing deformation, and reducing the likelihood of mutual adhesion during winding. A winding mechanism enables synchronous and coaxial winding of multiple sub-bag films, eliminating the need for frequent manual switching required by traditional biaxial layered winding, improving production continuity and winding quality, simplifying the operation process, reducing labor costs and downtime losses, and comprehensively improving the efficiency and yield of double-layer bag film slitting and winding. Both the outer bag film 01 and the sub-bag film are made of PE material. In practical applications, the required specifications or widths of the outer bag film 01 can be manufactured using a blown film machine or other equipment for producing PE film and wound up in the unwinding mechanism 2 for later use. When it is necessary to cut the outer bag film 01, the unwinding mechanism 2 unwinds the outer bag film 01, and the hot cutting mechanism 3 performs hot melt cutting of the outer bag film 01 along the unwinding direction to obtain the corresponding specifications and sizes of the sub-bag film according to actual needs. Then, the pressure roller mechanism 5 and the cooling mechanism 6 sequentially perform dynamic pressing and timely cooling on the passing sub-bag film to ensure the sealing and anti-sticking properties of the sub-bag film, and convey the sub-bag film to the winding mechanism to achieve synchronous and coaxial winding of multiple sub-bag films. Through the synergistic effect of the unwinding mechanism 2, the hot cutting mechanism 3, the winding mechanism, the pressure roller mechanism 5, and the cooling mechanism 6, the production efficiency is high, the practicality is high, the versatility is good, the energy consumption and production cost are reduced, and the yield of double-layer bag film slitting is improved.

[0049] In this embodiment, as Figure 1 As shown, the winding mechanism includes at least one winding shaft 41 and a fourth drive device. Each winding shaft 41 is arranged parallel to the unwinding shaft 21 and is rotatably mounted on the frame 1. The fourth drive device is configured to be driven to connect with one of the winding shafts 41 to drive the winding shaft 41 to rotate so as to coaxially wind each sub-bag film after being cooled by the water-cooled circulating roller onto the winding shaft 41.

[0050] In practical application, the fourth drive device drives one of the take-up shafts 41 to rotate, so that the cooled sub-bag films can be wound side by side and coaxially onto the take-up shaft 41. The fourth drive device stably and accurately controls the winding progress of the take-up shaft 41. Under the coordination of the unwinding shaft 21, not only is the smooth conveying of the bag film 01 ensured, but also the smoothness and continuity of the winding of each sub-bag film is guaranteed, improving the efficiency and quality of the entire process. When one of the take-up shafts 41 has finished winding, the operator only needs to cut the sub-bag film and then wrap all the cut sub-bag films onto another spare take-up shaft 41 to continue repeating the above winding action, reducing downtime and improving production efficiency. The first drive device 22 can be a magnetic powder controller or a drive motor.

[0051] Example 2

[0052] like Figure 1 and Figure 2 As shown, the difference between Example 1 and Example 2 is that:

[0053] like Figure 1 As shown, the unwinding mechanism 2 includes an unwinding shaft 21 and a first drive device 22. The unwinding shaft 21 is rotatably mounted on the frame 1 and winds up the bagged film 01. The first drive device 22 is mounted on the frame 1 and connected to the unwinding shaft 21. The first drive device 22 is configured to drive the unwinding shaft 21 to rotate in order to unwind the bagged film 01.

[0054] In practical application, the bagged film 01 to be cut is wound onto the unwinding shaft 21. When it is necessary to cut the bagged film 01 into two or more sub-bagged films, the first driving device 22 drives the unwinding shaft 21 to unwind the bagged film 01, so that the bagged film 01 can be conveyed to the hot cutting mechanism 3 at a uniform speed and stably for hot melt cutting. The first driving device 22 can stably and accurately control the unwinding progress of the bagged film 01, ensuring the smoothness and continuity of the unwinding of the bagged film 01, effectively avoiding problems such as jamming and slippage during the unwinding process, providing a reliable guarantee for the stable operation of subsequent cutting, and helping to improve the efficiency and quality of the entire cutting process. The first driving device 22 can be a magnetic powder controller or a drive motor.

[0055] The remaining features and working principles of this embodiment are the same as those of Embodiment 1.

[0056] Example 3

[0057] like Figures 1-3 As shown, the difference between Example 1 and Example 2 is as follows:

[0058] like Figure 3As shown, the hot cutting mechanism 3 includes at least one hot cutting tool 31 and a mounting shaft 32. The mounting shaft 32 is mounted on the frame 1 and is arranged parallel to the unwinding shaft 21. Each hot cutting tool 31 is mounted on the mounting shaft 32 and distributed along the axial direction of the mounting shaft 32. The cutting direction of each hot cutting tool 31 is perpendicular to the axial direction of the mounting shaft 32. Each hot cutting tool 31 is configured to be able to move along the axial direction of the mounting shaft 32 to adjust the spacing between two adjacent hot cutting tools 31.

[0059] In practical application, this embodiment uses a thermal resistance thermometer to heat the cutting blades 31. The temperature of the thermal resistance heating is precisely controlled by a temperature controller to transfer heat energy to the blade surface, so that the bagging film 01 passing through the blade is efficiently and stably cut and sealed. The blades of each cutting blade 31 gradually thicken, and the blade body gradually widens from the front end to the rear end along the unwinding direction. The blade body length is 150mm, which has the advantages of increasing the contact area and heat melting time between the bagging film 01 and the cutting blades 31, thereby improving the sealing performance of the bagging film. Specifically, by aligning the mounting shaft 32 parallel to the unwinding shaft 21, the spacing of each cutting blade 31 can be adjusted along the axial direction of the mounting shaft 32 according to the cutting requirements. This provides good flexibility, high practicality, good versatility, and a compact structure.

[0060] In this embodiment, as Figure 1 and Figure 3 As shown, the hot cutting mechanism 3 also includes two first guide rails 33 and two second drive devices 34. The two first guide rails 33 are arranged opposite to each other and are respectively mounted on the frame 1. First sliders 35 are slidably arranged on the two first guide rails 33 respectively. The two ends of the mounting shaft 32 are respectively connected to one of the first sliders 35. The two second drive devices 34 are respectively mounted on one of the first guide rails 33 and connected to the adjacent first slider 35. The second drive device 34 is configured to drive the first slider 35 to move along the guide direction of the first guide rail 33 to adjust the distance between each hot cutting blade 31 and the bagging film 01.

[0061] In practical application, this embodiment uses two second driving devices 34 to synchronously drive the corresponding first slider 35 to slide along the guide direction within the first guide rail 33, thereby smoothly moving the mounting shaft 32. This allows for flexible and precise adjustment of the distance between the hot cutting blade 31 and the bagging film 01. It can meet the cutting requirements of films of different thicknesses according to actual conditions, and can also optimize the cut quality by dynamically adjusting the cutting pressure, effectively reducing the defect rate of film edge burrs, hot melt adhesion, etc. The structure is simple, easy to adjust, and highly practical. The two second driving devices 34 can be cylinders.

[0062] The remaining features and working principles of this embodiment are the same as those of Embodiment 1 or Embodiment 2.

[0063] Example 4

[0064] like Figures 1-4 As shown, the difference between this embodiment and embodiment 1, 2, or 3 is as follows:

[0065] like Figure 4 As shown, the pressure roller mechanism 5 includes two pressure roller bodies 51. Both pressure roller bodies 51 are arranged parallel to the unwinding shaft 21 and are rotatably mounted on the frame 1. A gap is provided between the two pressure roller bodies 51 for the sub-bag films after heat melting and slitting to pass through. The two pressure roller bodies 51 are configured to press and convey the passing sub-bag films.

[0066] In practical application, when the slit sub-bag film passes through the gap between the two pressure roller bodies 51, the two pressure roller bodies 51 rotate relative to each other and apply pressure to the sub-bag film while conveying it, so as to press and flatten the sub-bag film, making the cut edge of the heat-cut sub-bag film flat, and the cut edge of the sub-bag film is more firmly bonded, thus improving the sealing quality and sealing performance.

[0067] In this embodiment, as Figure 1 and Figure 4 As shown, the pressure roller mechanism 5 also includes two second guide rails 52 and two third drive devices 53. The two second guide rails 52 are arranged opposite to each other and are respectively mounted on the frame 1. Second sliders 54 are slidably arranged on the two second guide rails 52 respectively. The two ends of one pressure roller body 51 are respectively connected to one of the second sliders 54. The two third drive devices 53 are respectively mounted on one of the second guide rails 52 and connected to the adjacent second sliders 54. The third drive devices 53 are configured to drive the second sliders 54 to move along the guide direction of the second guide rails 52 to adjust the gap between the two pressure roller bodies 51.

[0068] In this embodiment, two second guide rails 52 and a second slider 54 are used to achieve stable installation and linear movement guidance of one of the pressure roller bodies 51, ensuring the smoothness and accuracy of the movement of the pressure roller body 51. Under the synchronous driving action of two third drive devices 53, the pressure roller body 51 can slide along the guiding direction of the second guide rails 52, so as to flexibly and accurately adjust the distance between the two pressure roller bodies 51, thereby meeting the pressing requirements of sub-bag films of different thicknesses, ensuring the overall flatness and sealing performance. The structure is simple, easy to adjust, and highly practical. The two third drive devices 53 can be cylinders.

[0069] The remaining features and working principles of this embodiment are consistent with those of Embodiment 1, Embodiment 2 or Embodiment 3.

[0070] Example 5

[0071] like Figures 1-4As shown, the difference between this embodiment and embodiment 1, 2, 3, or 4 is as follows:

[0072] like Figure 2 As shown, the cooling mechanism 6 includes a water-cooled circulating roller, which is arranged parallel to the unwinding shaft 21 and rotatably mounted on the frame 1. Each sub-bag film between the pressure roller mechanism 5 and the winding mechanism is configured to bypass the water-cooled circulating roller. The water-cooled circulating roller is used to connect with an external cold water circulation system. The water-cooled circulating roller is configured to cool down each bypassed sub-bag film to prevent adhesion problems between the sub-bag films.

[0073] This embodiment uses a water-cooled circulating roller to cool the sub-bag film as it passes through, reducing the temperature at the heat-sealing point. This not only prevents deformation of the sub-bag film but also reduces the likelihood of the sub-bag film sticking together during winding. Specifically, in practical applications, the water-cooled circulating roller is connected to the inlet and outlet of an external cold water circulation system. The external cold water circulation system drives cold water to circulate through the water-cooled circulating roller, continuously reducing the surface temperature of the roller. This allows the compressed sub-bag film to quickly reduce the temperature at the heat-sealing point as it passes through the water-cooled circulating roller, avoiding deformation and sticking problems caused by excessive temperature and ensuring the production quality of the sub-bag film.

[0074] The remaining features and working principles of this embodiment are consistent with those of Embodiment 1, Embodiment 2, Embodiment 3 or Embodiment 4.

[0075] Example 6

[0076] like Figures 1-4 As shown, the difference between this embodiment and Embodiment 1, Embodiment 2, Embodiment 3, Embodiment 4, or Embodiment 5 is as follows:

[0077] like Figure 2 As shown, it also includes at least one first guide conveyor roller 7. Each first guide conveyor roller 7 is rotatably mounted on the frame 1 and arranged parallel to the unwinding shaft 21. Each first guide conveyor roller 7 is evenly distributed between the unwinding mechanism 2 and the hot cutting mechanism 3. The bagging film 01 between the unwinding mechanism 2 and the hot cutting mechanism 3 is configured to be able to pass around each first guide conveyor roller 7 in sequence. Each first guide conveyor roller 7 is configured to be able to flatten and convey the bagging film 01 that has passed around.

[0078] In practical application, the unwound bagging film 01 is smoothly and stably conveyed from the unwinding shaft 21 to the hot-cutting mechanism 3 by each first guide conveyor roller 7. Each first guide conveyor roller 7 has a supporting, guiding and tensioning function between the unwinding mechanism 2 and the hot-cutting mechanism 3, so that the continuous bagging film 01 unwound by the unwinding mechanism 2 is transformed from a relaxed and bent state to a stable and tensioned state. This eliminates the sagging wrinkles and lateral displacement of the bagging film 01 caused by its own weight or inertia, ensuring that the bagging film 01 enters the hot-cutting mechanism 3 in a flat posture, thereby improving the hot-cutting accuracy and the finished product qualification rate of the sub-bagging film.

[0079] In this embodiment, as Figure 2 As shown, it also includes at least one second guide conveyor roller 8. Each second guide conveyor roller 8 is rotatably mounted on the frame 1 and arranged parallel to the unwinding shaft 21. Each second guide conveyor roller 8 is evenly distributed between the cooling mechanism 6 and the winding mechanism. Each sub-bag film between the cooling mechanism 6 and the winding mechanism is configured to pass around each second guide conveyor roller 8 in sequence. Each second guide conveyor roller 8 is configured to flatten and convey each passed sub-bag film.

[0080] In practical application, the cooled sub-bag film is smoothly and stably conveyed from the cooling mechanism 6 to the winding mechanism by each of the second guide conveying rollers 8. Each of the second guide conveying rollers 8 has a supporting, guiding and tensioning function between the cooling mechanism 6 and the winding mechanism, so that the cooled and continuously conveyed sub-bag film changes from a relaxed and bent state to a stable and tensioned state. This eliminates the sagging and lateral deviation of the sub-bag film caused by its own weight or inertia, ensuring that the sub-bag film enters the winding mechanism in a flat posture and achieves synchronous and coaxial winding, thereby improving the hot cutting accuracy and the finished product qualification rate of the sub-bag film.

[0081] The remaining features and working principles of this embodiment are consistent with those of Embodiment 1, Embodiment 2, Embodiment 3, Embodiment 4 or Embodiment 5.

[0082] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments. The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made based on the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A hot-melt slitting and coaxial winding device for bagged films, characterized in that, include: The frame (1), unwinding mechanism (2), hot cutting mechanism (3) and winding mechanism are sequentially mounted on the frame (1). The unwinding mechanism (2) is used to unwind the bagging film (01). The hot cutting mechanism (3) is configured to perform hot melt cutting on the unwound bagging film (01) along the unwinding direction to cut a single bagging film (01) into two or more sub-bagging films. The winding mechanism is configured to coaxially wind up each of the hot melt-cut sub-bagging films.

2. The hot-melt slitting and coaxial winding equipment for bagged films according to claim 1, characterized in that, The unwinding mechanism (2) includes an unwinding shaft (21) and a first drive device (22). The unwinding shaft (21) is rotatably mounted on the frame (1) and winds up the bagged film (01). The first drive device (22) is mounted on the frame (1) and connected to the unwinding shaft (21). The first drive device (22) is configured to drive the unwinding shaft (21) to rotate in order to unwind the bagged film (01).

3. The hot-melt slitting and coaxial winding equipment for bagged films according to claim 2, characterized in that, The hot cutting mechanism (3) includes at least one hot cutting tool (31) and a mounting shaft (32). The mounting shaft (32) is mounted on the frame (1) and is arranged parallel to the unwinding shaft (21). Each of the hot cutting tools (31) is mounted on the mounting shaft (32) and distributed along the axial direction of the mounting shaft (32). The cutting direction of each of the hot cutting tools (31) is perpendicular to the axial direction of the mounting shaft (32). Each of the hot cutting tools (31) is configured to be able to move along the axial direction of the mounting shaft (32) to adjust the spacing between two adjacent hot cutting tools (31).

4. The hot-melt slitting and coaxial winding equipment for bagged films according to claim 3, characterized in that, The hot cutting mechanism (3) further includes two first guide rails (33) and two second drive devices (34). The two first guide rails (33) are arranged opposite to each other and are respectively mounted on the frame (1). A first slider (35) is slidably arranged on each of the two first guide rails (33). The two ends of the mounting shaft (32) are respectively connected to one of the first sliders (35). The two second drive devices (34) are respectively mounted on one of the first guide rails (33) and connected to the adjacent first slider (35). The second drive device (34) is configured to drive the first slider (35) to move along the guide direction of the first guide rail (33) to adjust the distance between each hot cutting tool (31) and the bagging film (01).

5. The hot-melt slitting and coaxial winding equipment for bagged films according to claim 2, characterized in that, Also includes: A pressure roller mechanism (5) is mounted on the frame (1) and located between the hot cutting mechanism (3) and the winding mechanism. The pressure roller mechanism (5) is configured to press and convey the heat-melted slit sub-bag films. A cooling mechanism (6) is mounted on the frame (1) and located between the pressure roller mechanism (5) and the winding mechanism. The cooling mechanism (6) is configured to cool each sub-bag film after it has been pressed.

6. The hot-melt slitting and coaxial winding equipment for bagged films according to claim 5, characterized in that, The pressure roller mechanism (5) includes two pressure roller bodies (51). The two pressure roller bodies (51) are arranged parallel to the unwinding shaft (21) and are rotatably mounted on the frame (1). A gap is provided between the two pressure roller bodies (51) for each of the sub-bag films after heat melting and cutting to pass through. The two pressure roller bodies (51) are configured to press and convey each of the passing sub-bag films.

7. The hot-melt slitting and coaxial winding equipment for bagged films according to claim 6, characterized in that, The pressure roller mechanism (5) further includes two second guide rails (52) and two third drive devices (53). The two second guide rails (52) are arranged opposite to each other and are respectively mounted on the frame (1). Second sliders (54) are slidably arranged on the two second guide rails (52). The two ends of one of the pressure roller bodies (51) are respectively connected to one of the second sliders (54). The two third drive devices (53) are respectively mounted on one of the second guide rails (52) and connected to the adjacent second slider (54). The third drive device (53) is configured to drive the second slider (54) to move along the guide direction of the second guide rail (52) to adjust the gap between the two pressure roller bodies (51).

8. A hot-melt slitting and coaxial winding device for bagged films according to claim 5, characterized in that, The cooling mechanism (6) includes a water-cooled circulating roller, which is arranged parallel to the unwinding shaft (21) and rotatably mounted on the frame (1). Each of the sub-bag films between the pressure roller mechanism (5) and the winding mechanism is configured to bypass the water-cooled circulating roller. The water-cooled circulating roller is used to communicate with an external cold water circulation system. The water-cooled circulating roller is configured to cool down each of the bypassed sub-bag films to prevent adhesion problems between the sub-bag films.

9. A hot-melt slitting and coaxial winding device for bagged films according to claim 2, characterized in that, The winding mechanism includes at least one winding shaft (41) and a fourth drive device. Each winding shaft (41) is arranged parallel to the unwinding shaft (21) and rotatably mounted on the frame (1). The fourth drive device is configured to be driven to connect with one of the winding shafts (41) to drive the winding shaft (41) to rotate so as to coaxially wind each of the sub-bag films after being cooled by the water-cooled circulating roller onto one of the winding shafts (41).

10. A hot-melt slitting and coaxial winding device for bagged films according to claim 5, characterized in that, Also includes: At least one first guide conveyor roller (7) is rotatably mounted on the frame (1) and arranged parallel to the unwinding shaft (21). Each first guide conveyor roller (7) is evenly distributed between the unwinding mechanism (2) and the hot cutting mechanism (3). The bagging film (01) between the unwinding mechanism (2) and the hot cutting mechanism (3) is configured to pass around each first guide conveyor roller (7) in sequence. Each first guide conveyor roller (7) is configured to flatten and convey the bagging film (01) that has passed around. At least one second guide conveyor roller (8) is rotatably mounted on the frame (1) and arranged parallel to the unwinding shaft (21). Each second guide conveyor roller (8) is evenly distributed between the cooling mechanism (6) and the winding mechanism. Each sub-bag film between the cooling mechanism (6) and the winding mechanism is configured to pass around each second guide conveyor roller (8) in sequence. Each second guide conveyor roller (8) is configured to flatten and convey the passed sub-bag films.

Images