Multi-layer co-extrusion repackaging inner-cooling film blowing machine
By introducing a dehumidification filter box and a multi-layer filter module system into the internal cooling film blowing machine, the problems of impurities adsorption and temperature unevenness in the internal cooling system are solved, and the appearance and performance of the film are improved.
Patent Information
- Application Number
- CN202422236742.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-12
- Publication Date
- 2025-07-04
- Estimated Expiration
- 2034-09-12
AI Technical Summary
The internal cooling system of existing internal cooling film blowing machines is susceptible to the adsorption and temperature of airflow impurities, resulting in defects in the film and condensate accumulation, affecting product quality and performance.
The dehumidification filter box and multi-layer filtration module system are adopted, including carbon filters, felt filters, desiccant packs and activated carbon filter blocks, to perform air filtration and drying to prevent impurities from adsorption and maintain temperature balance.
Effectively remove tiny particles and impurities in the airflow, reduce the generation of condensate, and improve the appearance quality and performance of the film.
Smart Images
Figure CN223055376U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of internal cooling blown film machines, and particularly relates to a multi-layer co-extrusion heavy packaging internal cooling blown film machine. Background Technique
[0002] The multi-layer co-extrusion heavy packaging internal cooling blown film machine is an advanced and complex plastic film production equipment. It has the following remarkable characteristics and advantages: The multi-layer co-extrusion technology can simultaneously extrude plastic melts of multiple different materials, enabling the film to have multiple properties. For example, the outer layer can provide good abrasion resistance and printing adaptability, the middle layer can enhance the strength and barrier properties of the film, and the inner layer can ensure compatibility with the packaged contents. By precisely controlling the material and thickness ratio of each layer, the optimization and customization of film properties are achieved. The heavy packaging ability is specifically designed to produce packaging films that can withstand heavy items and large pressures, with excellent tensile strength, puncture resistance, and toughness. The internal cooling system, as mentioned above, directly cools inside the film bubble, accelerating the film forming speed and improving production efficiency. Ensure uniform cooling of the film, thereby enhancing the quality and performance stability of the film. The wide material adaptability can handle a variety of different plastic materials, such as polyethylene (PE), polypropylene (PP), nylon (PA), etc., as well as their copolymers and modified materials.
[0003] The multi-layer co-extrusion internal cooling blown film machine usually consists of the following main structural parts: Extrusion system: The extruder usually consists of a barrel, a screw, a heating device, and a driving device. The barrel is used to accommodate plastic raw materials. The screw pushes the raw materials during rotation and heats and plasticizes them. The heating device ensures that the raw materials reach the molten state, and the driving device provides the power for the screw to rotate. Co-extrusion die head: This is the key component for combining multiple layers of plastic melts into an integral film tube. Usually, a multi-layer annular distribution flow channel design is adopted to uniformly combine the melts of different layers at the die head outlet. Internal cooling device: Generally composed of an internal cooling ring and a cooling medium supply system. The cooling medium supply system is responsible for providing and regulating the flow rate and temperature of the cooling medium. Traction device: Used to traction the film bubble upward, usually consisting of a traction roller and a driving motor. The traction roller applies a certain pulling force to the film bubble to control the thickness and stretching degree of the film. Air ring: Installed above the die head, blowing cooling air to assist in cooling the outside of the film bubble, working in coordination with the internal cooling device to ensure the cooling effect of the film bubble. Rewinding device: Includes a rewinding roller and a tension control system. The rewinding roller winds the formed film into a roll, and the tension control system ensures stable tension of the film during the rewinding process, avoiding stretching deformation or wrinkling of the film. Frame and housing: Provide the support structure and protective housing of the equipment, ensuring the stability of the equipment and the safety of operators.
[0004] The existing internal cooling system of blown film machines has some relatively prominent problems in actual operation, which seriously affect the product quality of the film. First of all, the blown air flow is prone to adsorbing external impurities. In the production environment, there are inevitably various tiny particles, dust and other impurities. When the internal cooling system is working, the high-speed flowing air flow is very easy to adsorb these impurities. As the air flow enters the inside of the film bubble, these impurities may adhere to the film surface, resulting in defects and stains on the film, and even affecting its transparency and smoothness, greatly reducing the appearance quality and service performance of the film. Secondly, the influence of temperature on the air flow is also a problem that cannot be ignored. The temperature change at the production site is relatively complex, especially in different seasons or different time periods, the temperature fluctuates greatly. When the temperature difference between the air flow temperature and the temperature inside the film bubble is large, it is easy to form condensate water inside the film. These condensate waters will accumulate inside the film, destroying the structural uniformity of the film and causing the physical properties of the film to decline, such as reduced strength and poor flexibility. In addition, the condensate water may also trigger chemical reactions of the film, such as hydrolysis, oxidation, etc., further damaging the quality and service life of the film. Summary of the Invention
[0005] In order to make up for the above deficiencies, the present invention provides a multi-layer co-extrusion heavy packaging internal cooling blown film machine, aiming to improve the problem that the internal cooling system of the internal cooling blown film machine in the prior art is easily affected by the adsorption of air flow impurities and temperature, resulting in a relatively high scrap rate of product quality.
[0006] In order to achieve the above object, the present invention adopts the following technical scheme: A multi-layer co-extrusion heavy packaging internal cooling blown film machine includes a dehumidification and filtration box and an exhaust pipe. The right part of the outer side of the exhaust pipe is fixedly connected with a feeding block. The middle part of the inner side of the feeding block is provided with an extrusion block. The middle part of the outer side of the feeding block is fixedly connected with a heat preservation bracket. The outer side of the heat preservation bracket is fixedly connected with a heat preservation skin. The upper and lower parts of the inner side of the dehumidification and filtration box are fixedly connected with guide rails at equal intervals from left to right. The outer side of the guide rail is slidably connected with a dehumidification and filtration frame. The rear part of the inner side of the dehumidification and filtration frame is fixedly connected with a partition board. The middle side of the rear part of the inner side of the dehumidification and filtration frame is provided with a disassembly component for disassembling and assembling the dehumidification and filtration frame. The bottom side of the right part of the inner side of the dehumidification and filtration frame is provided with a door frame slot. The inner side of the door frame slot is provided with a dehumidification and filtration door frame. The front and rear sides of the top of the dehumidification and filtration door frame are slidably connected with a plug component for fixing the dehumidification and filtration door frame. The inner side of the dehumidification and filtration door frame is fixedly connected with a support rod. A desiccant packet is added to the first dehumidification and filtration module and the second dehumidification and filtration module, and calcium chloride is used as the filling material in the desiccant packet. A felt filter sheet is added to the third dehumidification and filtration module, and an activated carbon filter block is added to the third dehumidification and filtration module.
[0007] As a further description of the above technical solution:
[0008] In the middle of the right end of the dehumidification and filtration box, an intake pipe is fixedly connected. In the middle of the outer side of the intake pipe, a leg is fixedly connected. In the middle of the left end of the dehumidification and filtration box, an outlet pipe is fixedly connected. In the middle of the outer side of the outlet pipe, a leg is fixedly connected. On the outer circumferential circle of the inner side of the exhaust pipe, exhaust holes are equidistantly arranged. In the middle of the outer side of the exhaust pipe, a leg is fixedly connected.
[0009] As a further description of the above technical solution:
[0010] The plug component includes a fixed rod, a fixed wrench, and a fixed return spring. In the middle of the right end of the outer side of the fixed rod, a fixed wrench is fixedly connected. In the middle of the bottom end of the fixed rod, a fixed return spring is arranged.
[0011] As a further description of the above technical solution:
[0012] The disassembly component includes a slider rod, a slider spring, a linkage rod, a lever rod, a rotating shaft, and a linkage pin. On the outer side of the rotating shaft, a lever rod is rotatably connected. On the left front side and the middle right side of the front end of the lever rod, linkage pins are fixedly connected. On the outer side of the linkage pin, a linkage rod is rotatably connected. The other end of the linkage rod is rotatably connected to a slider rod. In the middle of the bottom end of the slider rod, a slider spring is arranged.
[0013] As a further description of the above technical solution:
[0014] A box cover is arranged at the front end of the dehumidification and filtration box. A number of fixing bolts are equidistantly arranged on the outer circumference of the front end of the box cover.
[0015] As a further description of the above technical solution:
[0016] Sliding grooves are respectively arranged in the middle of the top end and the bottom end of the dehumidification and filtration frame.
[0017] As a further description of the above technical solution:
[0018] A handle is fixedly connected to the middle of the front end of the dehumidification and filtration frame.
[0019] As a further description of the above technical solution:
[0020] Support rods are equidistantly and fixedly connected from top to bottom in the middle of the left end inside the dehumidification and filtration frame. Support rods are fixedly connected inside the dehumidification and filtration door frame.
[0021] The utility model has the following beneficial effects:
[0022] 1. In the utility model, by installing a carbon filter and a felt filter at the air inlet for double-layer filtration of air, it is prevented that tiny particulate impurities are adsorbed in the cold air pipe inside the internal cooling system.
[0023] 2. In the present utility model, a gas drying chamber is provided in the intake pipe to dry and remove the moisture in the gas. At the same time, a heat preservation ring is provided on the outer circle of the film blowing area to maintain the temperature in the blown film bubble, ensuring the temperature balance inside and outside the film bubble and reducing the generation amount of condensed water. Description of the Drawings
[0024] Figure 1 It is a perspective view of a multi-layer co-extrusion heavy packaging internal cooling film blowing machine proposed by the present utility model;
[0025] Figure 2 It is an exploded structural schematic diagram of a dehumidification and filtration box of a multi-layer co-extrusion heavy packaging internal cooling film blowing machine proposed by the present utility model;
[0026] Figure 3 It is an exploded structural schematic diagram of a dehumidification and filtration frame of a multi-layer co-extrusion heavy packaging internal cooling film blowing machine proposed by the present utility model;
[0027] Figure 4 It is a structural schematic diagram of a film blowing machine of a multi-layer co-extrusion heavy packaging internal cooling film blowing machine proposed by the present utility model.
[0028] Legend Explanation:
[0029] 1. Dehumidification and filtration box; 2. Box cover; 3. Fixed bolt; 4. Dehumidification and filtration frame; 5. Handle; 6. Support rod; 7. Slide bar; 8. Slide spring; 9. Linking rod; 10. Lever; 11. Rotating shaft; 12. Linking pin; 13. Dehumidification and filtration door frame; 14. Door frame slot; 15. Fixed rod; 16. Fixed wrench; 17. Fixed return spring; 18. Sliding groove; 19. Guide rail; 20. Intake pipe; 21. Outlet pipe; 22. Exhaust pipe; 23. Exhaust hole; 24. Feeding block; 25. Extrusion block; 26. Heat preservation bracket; 27. Heat preservation skin; 28. Leg; 29. Partition board. Detailed Embodiment
[0030] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0031] Refer to Figures 1-4, an embodiment provided by the present utility model: a multi-layer co-extrusion heavy packaging internal cold blown film machine, including a dehumidification and filtration box 1 and an exhaust pipe 22. A feed block 24 is fixedly connected to the right part of the outer side of the exhaust pipe 22. A pressing block 25 is arranged in the middle of the inner side of the feed block 24. A heat preservation bracket 26 is fixedly connected to the middle of the outer side of the feed block 24. A heat preservation skin 27 is fixedly connected to the outer side of the heat preservation bracket 26. Desiccant packets are added to the first dehumidification and filtration module and the second dehumidification and filtration module. Calcium chloride is used as the filling material in the desiccant packets. During the high-pressure air flow transportation, through the first dehumidification and filtration module and the second dehumidification and filtration module, the gas circulates inside the film, and the excess air flow is transported to the exhaust holes 23 in the exhaust pipe 22 and discharged, and the air in the film cooling area is maintained at a certain temperature through the heat preservation skin 27.
[0032] Refer to Figures 1-4 , on the upper and lower parts of the inner side of the dehumidification and filtration box 1, guide rails 19 are fixedly connected at equal intervals from left to right. A dehumidification and filtration frame 4 is slidably connected to the outer side of the guide rails 19. A partition 29 is fixedly connected to the rear part of the inner side of the dehumidification and filtration frame 4. A disassembly component is arranged in the middle of the rear part of the inner side of the dehumidification and filtration frame 4. The disassembly component is used for the disassembly and assembly of the dehumidification and filtration frame 4. A door frame slot 14 is opened at the bottom right part of the inner side of the dehumidification and filtration frame 4. A dehumidification and filtration door frame 13 is arranged inside the door frame slot 14. Plug components are slidably connected to the front and rear sides of the top of the dehumidification and filtration door frame 13. The plug components are used for the fixation of the dehumidification and filtration door frame 13. A support rod 6 is fixedly connected to the inner side of the dehumidification and filtration door frame 13. Felt filter sheets are added to the third dehumidification and filtration module, and activated carbon filter blocks are added to the third dehumidification and filtration module. The air flow adsorbs the tiny impurity particles in the air flow through the felt filter sheets in the third dehumidification and filtration module. Finally, it is filtered and cleaned again through the activated carbon filter blocks in the fourth dehumidification and filtration module. Then the gas blows the film through the pipeline inside the exhaust pipe 22.
[0033] Refer to Figures 1-4, a middle part of the right end of the dehumidifying and filtering box 1 is fixedly connected to an air inlet pipe 20. A middle part of the outer side of the air inlet pipe 20 is fixedly connected to a support leg 28. A middle part of the left end of the dehumidifying and filtering box 1 is fixedly connected to an air outlet pipe 21. A middle part of the outer side of the air outlet pipe 21 is fixedly connected to a support leg 28. Exhaust holes 23 are equidistantly arranged on the outer circumferential of the inner side of the exhaust pipe 22. A middle part of the outer side of the exhaust pipe 22 is fixedly connected to a support leg 28. The pin assembly includes a fixing rod 15, a fixing wrench 16, and a fixing return spring 17. A middle part of the right end of the outer side of the fixing rod 15 is fixedly connected to the fixing wrench 16. A middle part of the bottom end of the fixing rod 15 is provided with the fixing return spring 17. The disassembly assembly includes a slider rod 7, a slider spring 8, a linkage rod 9, a lever rod 10, a rotating shaft 11, and a linkage pin 12. The lever rod 10 is rotatably connected to the outer side of the rotating shaft 11. Linkage pins 12 are fixedly connected to both the left side and the middle right side of the front end of the lever rod 10. The linkage rod 9 is rotatably connected to the outer side of the linkage pin 12. The other end of the linkage rod 9 is rotatably connected to the slider rod 7. A slider spring 8 is provided at the middle part of the bottom end of the slider rod 7. A box cover 2 is arranged at the front end of the dehumidifying and filtering box 1. A plurality of fixing bolts 3 are equidistantly arranged on the outer circumferential of the front end of the box cover 2. Sliding grooves 18 are respectively arranged at the middle parts of the top and bottom ends of the dehumidifying and filtering frame 4. A handle 5 is fixedly connected to the middle part of the front end of the dehumidifying and filtering frame 4. Support rods 6 are fixedly connected to the inner side of the dehumidifying and filtering box 1 from top to bottom at equal intervals. Support rods 6 are fixedly connected to the inner side of the dehumidifying and filtering door frame 13. Workers heat the raw materials of the thin film plastic through the feeding block 24 and extrude the thin film through the extrusion block 25, and then convey high-pressure air flow through the air inlet pipe 20.
[0034] Working principle: Workers heat the raw materials of the thin film plastic through the feeding block 24 and extrude the thin film through the extrusion block 25, and then convey high-pressure air flow through the air inlet pipe 20. During the conveying process of the high-pressure air flow, through the first dehumidifying and filtering module and the second dehumidifying and filtering module, the moisture in the air flow is absorbed and removed by calcium chloride in the desiccant packet in the module. Then, the air flow adsorbs the tiny impurity particles in the air flow through the felt filter sheet in the third dehumidifying and filtering module. Finally, it is filtered and cleaned again through the activated carbon filter block in the fourth dehumidifying and filtering module. Then, the gas blows out the thin film through the pipeline inside the exhaust pipe 22. Then, the gas circulates inside the thin film, and the excess air flow is conveyed to the exhaust holes 23 in the exhaust pipe 22 and discharged. The temperature of the air in the thin film cooling area is maintained at a certain level through the heat preservation skin 27, ensuring the appearance quality and service performance of the products produced by the thin film.
[0035] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.
Claims
1. A multi-layer co-extrusion heavy packaging internal cooling blown film machine, comprising a dehumidification and filtration box (1) and an exhaust pipe (22), characterized in that: On the outer right part of the exhaust pipe (22), a feeding block (24) is fixedly connected. In the middle of the inner side of the feeding block (24), an extrusion block (25) is arranged. In the middle of the outer side of the feeding block (24), a heat preservation bracket (26) is fixedly connected. On the outer side of the heat preservation bracket (26), a heat preservation skin (27) is fixedly connected. On the upper and lower parts inside the dehumidification and filtration box (1), guide rails (19) are fixedly connected at equal intervals from left to right. On the outer side of the guide rails (19), a dehumidification and filtration frame (4) is slidably connected. At the rear part of the inner side of the dehumidification and filtration frame (4), a partition plate (29) is fixedly connected. In the middle of the rear part of the inner side of the dehumidification and filtration frame (4), a disassembly component is arranged, and the disassembly component is used for the disassembly and assembly of the dehumidification and filtration frame (4). On the bottom side of the right part of the inner side of the dehumidification and filtration frame (4), a door frame slot (14) is opened. Inside the door frame slot (14), a dehumidification and filtration door frame (13) is arranged. At the front and rear sides of the top of the dehumidification and filtration door frame (13), a plug pin component is slidably connected, and the plug pin component is used for the fixation of the dehumidification and filtration door frame (13). Inside the dehumidification and filtration door frame (13), a support rod (6) is fixedly connected. A desiccant packet is added in the first dehumidification and filtration module and the second dehumidification and filtration module, and calcium chloride is used as the filling material in the desiccant packet. A felt filter sheet is added in the third dehumidification and filtration module, and an activated carbon filter block is added in the third dehumidification and filtration module.
2. The multi-layer co-extrusion heavy packaging internal cooling blown film machine according to claim 1, characterized in that: In the middle of the right end of the dehumidification and filtration box (1), an air inlet pipe (20) is fixedly connected. In the middle of the outer side of the air inlet pipe (20), a leg (28) is fixedly connected. In the middle of the left end of the dehumidification and filtration box (1), an air outlet pipe (21) is fixedly connected. In the middle of the outer side of the air outlet pipe (21), a leg (28) is fixedly connected. On the outer ring of the inner side of the exhaust pipe (22), exhaust holes (23) are opened at equal intervals. In the middle of the outer side of the exhaust pipe (22), a leg (28) is fixedly connected.
3. A multi-layer co-extrusion heavy packaging internal cooling blown film machine according to claim 1, characterized in that: The plug pin component includes a fixing rod (15), a fixing wrench (16), and a fixing return spring (17). In the middle of the right end of the outer side of the fixing rod (15), a fixing wrench (16) is fixedly connected. In the middle of the bottom end of the fixing rod (15), a fixing return spring (17) is arranged.
4. A multi-layer co-extrusion heavy packaging internal cooling blown film machine according to claim 1, characterized in that: The disassembly component includes a slider rod (7), a slider spring (8), a linkage rod (9), a lever rod (10), a rotating shaft (11), and a linkage pin (12). On the outer side of the rotating shaft (11), a lever rod (10) is rotatably connected. On the left front side and the right middle side of the front end of the lever rod (10), a linkage pin (12) is fixedly connected. On the outer side of the linkage pin (12), a linkage rod (9) is rotatably connected. The other end of the linkage rod (9) is rotatably connected to a slider rod (7). In the middle of the bottom end of the slider rod (7), a slider spring (8) is arranged.
5. A multi-layer co-extrusion heavy packaging internal cooling blown film machine according to claim 1, characterized in that: At the front end of the dehumidification and filtration box (1), a box cover (2) is arranged. On the outer ring of the front end of the box cover (2), a number of fixing bolts (3) are arranged at equal intervals.
6. A multi-layer co-extrusion heavy packaging internal cooling blown film machine according to claim 1, characterized in that: On the top and bottom middle parts of the dehumidification and filtration frame (4), sliding grooves (18) are opened.
7. A multi-layer co-extrusion heavy packaging internal cooling blown film machine according to claim 1, characterized in that: In the middle of the front end of the dehumidification and filtration frame (4), a handle (5) is fixedly connected.
8. A multi-layer co-extrusion heavy packaging internal cooling blown film machine according to claim 1, characterized in that: The left end inside the dehumidification and filtration frame (4) is fixedly connected with support rods (6) at equal intervals from top to bottom, and the inside of the dehumidification and filtration door frame (13) is fixedly connected with support rods (6).