Air blowing device of film blowing machine

Abstract

The utility model relates to the technical field of air blowing devices of film blowing machines, in particular to an air blowing device of a film blowing machine, which comprises an air ring fixedly connected to the top of a device main body, and a film is blown out of the air ring; a cooling assembly is arranged at the top of the air ring and comprises a fan and a heat conduction plate, the fan is arranged at the top of the air ring, and the heat conduction plate is tightly attached to the top of the air ring and located on an air path formed by the fan. Heat around a film is further effectively dissipated through the arranged cooling assembly, so that the cooling time is prolonged, the working efficiency is improved, meanwhile, wind power generated by the cooling assembly does not blow the film to cause shaking of the film, the cooling assembly is conveniently disassembled through the arranged disassembling and assembling assembly, and the cooling efficiency is improved. Therefore, the device main body and the air ring are convenient to repair or maintain.

Description

Technical Field

[0001] This utility model relates to the technical field of air blowing devices for blown film machines, specifically an air blowing device for blown film machines. Background Technology

[0002] A blown film machine is a widely used piece of equipment in the production of plastic films. It is mainly used to heat and melt plastic particles and then blow them into films through a blow molding process. The blowing device of the blown film machine evenly distributes the heated and melted plastic particles and blows them into films, which are then extruded from the blowing device through a plastic film cylinder.

[0003] After the film is extruded from the blowing device, it is first cooled by the air ring. In order to cool the film completely, an overhead frame needs to be set between the winding device and the blowing device to increase the film's movement distance and allow the film to cool for a longer time. However, the height of the overhead frame leads to an excessively long film cooling time, which affects work efficiency. Therefore, this utility model proposes an air blowing device for a blown film machine to at least partially solve the problems that may exist in the prior art. Utility Model Content

[0004] In view of the aforementioned problems, this application is made in order to provide an air blowing device for a blown film machine that overcomes or at least partially solves the aforementioned problems.

[0005] One embodiment of this application provides an air blowing device for a blown film machine to solve the problem that the air ring above the air blowing device is insufficient to quickly cool and shape the extruded film, resulting in an excessively long cooling time. The device includes:

[0006] The device consists of a main body, an air ring, and a membrane; the air ring is fixedly connected to the top of the main body, and a membrane is blown out from inside the air ring.

[0007] The top of the air ring is provided with a cooling component, which includes a fan and a heat-conducting plate. The fan is located on the top of the air ring, and the heat-conducting plate is closely attached to the top of the air ring and located on the air path formed by the fan.

[0008] Preferably, the cooling assembly further includes a fixing frame, heat dissipation fins, and vents;

[0009] The top of the air ring is tightly fitted with a fixed frame, a fan is provided on the front side of the fixed frame, a heat-conducting plate is fixedly connected to the inner wall of the fixed frame, heat dissipation fins are provided on the outer side of the heat-conducting plate, and a ring-shaped ventilation opening is provided on the outer surface of the fixed frame.

[0010] Preferably, a disassembly assembly is also provided on one side of the fixing frame;

[0011] The assembly / disassembly components include a connecting plate, a positioning post, a limiting plate, a pulling plate, a limiting rod, a moving plate, a spring, and a groove. The connecting plates are fixedly connected to both sides of the fixed frame, and the positioning post is fixedly connected to the bottom of the connecting plate.

[0012] Preferably, the heat-conducting plate is made of a material with high thermal conductivity.

[0013] This application has the following advantages:

[0014] In the embodiments of this application, the device body, air ring, cooling components, fan, fixed frame, heat conduction plate, heat dissipation fins, vents, and film are configured. The heat conduction plate can absorb the heat around the film and transfer it to the heat dissipation fins. The air force generated by the fan effectively dissipates heat from the heat dissipation fins. At the same time, the vents allow the air force to dissipate from the outside of the fixed frame, increasing the airflow speed around the film and further enhancing the heat dissipation effect. This shortens the cooling time of the film, reduces the height of the overhead frame, and thus reduces the moving distance of the film, thereby improving work efficiency. Meanwhile, the film will not be blown by the air force generated by the fan when it is extruded, preventing it from shaking. The fixed frame is easily disassembled by the assembly / disassembly components, connecting plate, positioning post, limiting plate, pulling plate, limiting rod, moving plate, spring, and groove, which facilitates the repair or maintenance of the air ring. Attached Figure Description

[0015] To more clearly illustrate the technical solution of this application, the drawings used in the description of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of an air blowing device for a blown film machine according to an embodiment of this application;

[0017] Figure 2 yes Figure 1 A schematic diagram of the structure at point A;

[0018] Figure 3 This is a schematic diagram of the cooling component structure of an air blowing device for a blown film machine according to an embodiment of this application.

[0019] In the attached diagram, 1. Main body of the device; 2. Air ring; 3. Cooling assembly; 31. Fan; 32. Fixing frame; 33. Heat conduction plate; 34. Heat dissipation fins; 35. Ventilation port; 4. Assembly / disassembly assembly; 41. Connecting plate; 42. Positioning post; 43. Limiting plate; 44. Pulling plate; 45. Limiting rod; 46. Moving plate; 47. Spring; 48. Groove; 5. Membrane. Detailed Implementation

[0020] To make the objectives, features, and advantages of this application more apparent and understandable, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0021] Reference Figures 1 to 3 This application illustrates a blown film machine blowing device according to an embodiment of the present application, which includes: a wind ring 2 fixedly connected to the top of the device body 1, and a thin film 5 blown out from the wind ring 2; a cooling component 3 is provided on the top of the wind ring 2, the cooling component 3 includes a fan 31 and a heat-conducting plate 33, the fan 31 is disposed on the top of the wind ring 2, and the heat-conducting plate 33 is tightly attached to the top of the wind ring 2 and located on the air path formed by the fan 31.

[0022] By directly mounting the blower 31 and heat-conducting plate 33 on top of the air ring 2, the freshly blown film can be cooled more effectively. The forced airflow provided by the blower 31 accelerates heat transfer, while the heat-conducting plate 33 provides a larger heat exchange area, allowing heat to be conducted away from the film more quickly. This reduces the cooling time of the film on the overhead rack, as it receives efficient cooling immediately after leaving the blowing device, thus shortening the overall production cycle and improving work efficiency. In practical applications, using this improved blown film machine blowing device can reduce the film cooling time by 30%, significantly improving production efficiency. Not only does it improve production efficiency, it also reduces film quality problems such as deformation or cracking caused by excessively long cooling times.

[0023] Furthermore, the cooling assembly 3 also includes a fixing frame 32, heat dissipation fins 34, and vents 35; the top of the air ring 2 is tightly fitted with the fixing frame 32, a fan 31 is provided on the front side of the fixing frame 32, a heat-conducting plate 33 is fixedly connected to the inner wall of the fixing frame 32, heat dissipation fins 34 are provided on the outer side of the heat-conducting plate 33, and a ring-shaped vent 35 is opened on the outer surface of the fixing frame 32, which can further improve the cooling efficiency. A disassembly assembly 4 is also provided on one side of the fixing frame 32; the disassembly assembly 4 includes a connecting plate 41, a positioning post 42, a limiting plate 43, a pulling plate 44, a limiting rod 45, a moving plate 46, a spring 47, and a groove 48. The fixing frame 32 is fixedly connected to both sides of the fixing plate 32, and the bottom of the connecting plate 41 is fixedly connected to the positioning post 42. The above-mentioned disassembly assembly can be used for maintenance and replacement of the cooling assembly, improving convenience. The heat-conducting plate 33 is made of a material with high thermal conductivity, such as graphite, carbon nanotubes, graphene, etc., which improve heat exchange efficiency due to their excellent thermal conductivity.

[0024] As an example, such as Figures 1 to 3 As shown, a blown film machine blowing device includes: a main body 1, an air ring 2, and a film 5. The air ring 2 is fixedly connected to the top of the main body 1, and the film 5 is blown out from inside the air ring 2. A cooling component 3 is provided on the top of the air ring 2. The cooling component 3 includes a fan 31, a fixing frame 32, a heat-conducting plate 33, heat dissipation fins 34, and a vent 35. The fixing frame 32 is tightly fitted to the top of the air ring 2. The fan 31 is provided on the front side of the fixing frame 32. The heat-conducting plate 33 is fixedly connected to the inner wall of the fixing frame 32. Heat dissipation fins 34 are provided on the outer side of the heat-conducting plate 33. A ring-shaped vent 35 is opened on the outer surface of the fixing frame 32. A disassembly assembly is provided on one side of the fixing frame 32. 4. The disassembly and assembly component 4 includes a connecting plate 41, a positioning post 42, a limiting plate 43, a pulling plate 44, a limiting rod 45, a moving plate 46, a spring 47, and a groove 48. The connecting plate 41 is fixedly connected to both sides of the fixed frame 32, and the positioning post 42 is fixedly connected to the bottom of the connecting plate 41. The cooling component 3 further effectively dissipates the heat around the membrane 5, thereby increasing the cooling time and improving the working efficiency. At the same time, the wind generated by the cooling component 3 will not blow the membrane 5 and cause it to shake. The disassembly and assembly component 4 facilitates the disassembly of the cooling component 3, thereby facilitating the maintenance or repair of the main body 1 and the air ring 2.

[0025] The heat-conducting plate 33 is arranged in a ring shape and is located on the outside of the film 5 to facilitate the adsorption of heat around the film 5. The top of the air ring 2 is fixedly connected to a limiting plate 43, which is in close contact with the connecting plate 41 to facilitate the effective fixation of the fixing frame 32. A pull plate 44 is attached to one side of the limiting plate 43, and a limiting rod 45 is fixedly connected to one side of the pull plate 44. The limiting rod 45 is inserted into the connecting plate 41 to facilitate its use. A groove 48 is provided in the limiting plate 43, and a moving plate 46 is slidably connected in the groove 48. The moving plate 46 is located on the outside of the limiting rod 45. A spring 47 is provided between the outside of the limiting rod 45, the inner wall of the groove 48, and the moving plate 46 to facilitate the movement of the limiting rod 45 and the fixation of the connecting plate 41.

[0026] During operation, the equipment is powered by an external power source. When using the blown film machine's blowing device, first place the main body 1 in a suitable position, then start the main body 1 to put it into working condition. The heated and melted plastic granules are evenly distributed and blown into a film 5, which is then extruded from the main body 1 through a film cylinder. After the film 5 is extruded, the air ring 2 performs preliminary cooling and shaping on the film 5. The partially solidified film 5 is then manually bonded to the previously produced film 5, allowing the newly produced film 5 to solidify and fix with the previously produced film 5. At this point, the film... 5. Heat remains around the film 5. The heat-conducting plate 33 effectively absorbs the heat around the film 5 and transfers it to the heat dissipation fins 34. The heat dissipation fins 34 effectively dissipate the heat absorbed by the heat-conducting plate 33. At this time, the fan 31 is activated. The airflow generated by the fan 31 blows into the fixed frame 32, effectively dissipating heat from the heat dissipation fins 34 within the fixed frame 32. Because the fixed frame 32 has annular ventilation openings 35 around its outer perimeter, air circulation and exchange between the inside and outside of the fixed frame 32 are facilitated. Simultaneously, the airflow generated by the fan 31 does not directly blow onto the surface of the film 5, avoiding… When the wind causes the extruded film 5 to sway, the old film 5 can be pulled to pull the new film 5 from the lowered overhead position until it enters the winding device. When the wind ring 2 and the main body of the device need maintenance or repair after long-term use, the fixed frame 32 needs to be disassembled because it is located directly above the wind ring 2. The user holds the pull plate 44 and pulls it outward, causing the limiting rod 45 and the moving plate 46 to slide in the groove 48 opened in the limiting plate 43. The spring 47 is compressed by force. When the limiting rod 45 is completely away from the connecting plate 41, The fixed frame 32 can be moved upward as a whole, driving the connecting plate 41 and the positioning column 42 to move upward simultaneously until the positioning column 42 is completely removed from the top of the air ring 2, thereby completing the disassembly of the cooling component 3. The cooling component 3 further effectively dissipates the heat around the membrane 5, thereby increasing the cooling time and improving work efficiency. At the same time, the wind generated by the cooling component 3 will not blow the membrane 5 and cause it to shake. The disassembly and assembly component 4 facilitates the disassembly of the cooling component 3, thereby facilitating the repair or maintenance of the main body 1 and the air ring 2.

[0027] Contents not described in detail in this specification are existing technologies known to those skilled in the art. Standard parts used in this invention can all be purchased commercially, and irregularly shaped parts can be custom-made according to the description and drawings. The specific connection methods for each part all employ conventional methods such as bolts, rivets, and welding, which are already mature technologies. The machinery, parts, and equipment all use conventional models from the prior art, and the circuit connections also employ conventional connection methods from the prior art, which will not be detailed here.

[0028] Although preferred embodiments of the present application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the embodiments of the present application.

[0029] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device 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 terminal device. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or terminal device that includes said element.

[0030] The above provides a detailed description of the blowing device for a blown film machine provided in this application. Specific examples have been used to illustrate the principle and implementation of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core idea of ​​this application. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. An air blowing device for a blown film machine, characterized in that, include: A wind ring (2) is fixedly connected to the top of the main body (1) of the device, and a thin film (5) is blown out from the wind ring (2); The top of the air ring (2) is provided with a cooling component (3), which includes a fan (31) and a heat-conducting plate (33). The fan (31) is located on the top of the air ring (2), and the heat-conducting plate (33) is closely attached to the top of the air ring (2) and located on the air path formed by the fan (31).

2. The apparatus according to claim 1, characterized in that, The cooling assembly (3) also includes a fixing frame (32), heat dissipation fins (34), and vents (35); The top of the air ring (2) is tightly fitted with a fixed frame (32), and a fan (31) is provided on the front side of the fixed frame (32). A heat-conducting plate (33) is fixedly connected to the inner wall of the fixed frame (32), and heat dissipation fins (34) are provided on the outer side of the heat-conducting plate (33). A vent (35) in a ring-shaped arrangement is opened on the outer surface of the fixed frame (32).

3. The apparatus according to claim 2, characterized in that, The fixed frame (32) is also provided with a disassembly and assembly component (4) on one side; The assembly / disassembly component (4) includes a connecting plate (41), a positioning post (42), a limiting plate (43), a pulling plate (44), a limiting rod (45), a moving plate (46), a spring (47), and a groove (48). The connecting plate (41) is fixedly connected to both sides of the fixed frame (32), and the positioning post (42) is fixedly connected to the bottom of the connecting plate (41).

4. The apparatus according to claim 1, characterized in that, The heat-conducting plate (33) is made of a material with high thermal conductivity.

5. The apparatus according to claim 1, characterized in that, The heat-conducting plate (33) is arranged in a ring shape and is located on the outside of the film (5).

6. The apparatus according to claim 3, characterized in that, A limiting plate (43) is fixedly connected to the top of the air ring (2), and the limiting plate (43) and the connecting plate (41) are tightly fitted together.

7. The apparatus according to claim 6, characterized in that, A pull plate (44) is attached to one side of the limiting plate (43), and a limiting rod (45) is fixedly connected to one side of the pull plate (44). The limiting rod (45) is inserted into the connecting plate (41).

8. The apparatus according to claim 7, characterized in that, The limiting plate (43) has a groove (48) inside, and a movable plate (46) is slidably connected inside the groove (48). The movable plate (46) is located outside the limiting rod (45), and a spring (47) is provided between the outside of the limiting rod (45), the inner wall of the groove (48), and the movable plate (46).

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