A high-strength fiber-containing blown film air cylinder
By incorporating adjustment components and sealing structures within the blown film duct, the problem of unadjustable airflow was solved, resulting in improved film thickness uniformity and appearance quality, reduced production scrap rate, and enhanced film mechanical properties and production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHUANG YA SHAN SHI TONG XIN XIANG JIAO CHANG
- Filing Date
- 2026-04-14
- Publication Date
- 2026-06-12
AI Technical Summary
Existing blown film ducts containing high-strength fibers cannot adjust the airflow, making it impossible to match films with different formulations, thicknesses, and widths. This results in defects in the films, such as localized over-thickness, under-thickness, crystal points, and fisheyes.
By incorporating adjustment components, including baffles, connecting pipes, delivery pipes, and ball screws, precise adjustment of the airflow can be achieved, ensuring the matching of cooling airflow. Furthermore, precise positioning and reliable sealing are provided through gaskets and clamps, suppressing airflow deviation and leakage.
It significantly improves film thickness uniformity and appearance quality, reduces production scrap rate, enhances film mechanical properties and production line capacity, and ensures stable delivery of high-temperature molten raw materials.
Smart Images
Figure CN224348398U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of blown film blowing duct technology, specifically a blown film blowing duct containing high-strength fibers. Background Technology
[0002] High-strength fiber blown film extrusion ducts represent a high-end, functional direction in film manufacturing. By combining traditional blown film technology with fiber-reinforced composite material technology, they produce products with performance far exceeding that of ordinary plastic films, specifically designed to solve industrial and engineering problems with extremely high requirements for film strength, durability, and dimensional stability.
[0003] Chinese Patent CN223559063U discloses a film blowing molding equipment for packaging bags, including a film blowing head, a cooling duct above the blowing head, the cooling duct having a ring structure, a horizontal partition in the middle of the cooling duct dividing it into an upper half and a lower half, air inlet pipes connected to the outer walls of the bottom ends of both the upper and lower halves, the air inlet pipes being connected to the air outlet ports of the blowing device via pipelines, an air outlet pipe at the top of the upper half, an air outlet through the outer wall of the top of the lower half, and a ring of evenly distributed heat dissipation vents on the inner wall of the lower half. This invention employs a method of first dissipating heat and then cooling the film. During the heat dissipation process, hot air is exhausted to the outside of the cooling duct, thus preventing hot air from moving upwards with the film and improving the heat dissipation effect. Simultaneously, the cooled air is used to rapidly cool the film, further improving the cooling efficiency.
[0004] Based on existing solutions and actual production and processing applications, existing blown film ducts containing high-strength fibers cannot adjust the airflow volume when blowing films through them. This makes it impossible to match the corresponding cooling airflow for films with different formulations, thicknesses, and widths, resulting in defects such as localized thicker or thinner films, crystal points, and fisheyes. Therefore, we propose a blown film duct containing high-strength fibers to solve the problems mentioned above. Utility Model Content
[0005] The purpose of this invention is to provide a blown film duct containing high-strength fibers to solve the problem mentioned in the background art that the current blown film duct containing high-strength fibers cannot adjust the air volume, making it impossible to match the corresponding cooling air volume for films with different formulations, thicknesses, and widths. This leads to defects such as localized thickening or thinning of the film, crystal points, and fisheyes.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a blown film duct containing high-strength fibers, comprising a blown film duct:
[0007] The top of the blower is fixedly equipped with an air duct, and the air duct is equipped with an adjustment component. The upper side wall of the blower is fixedly equipped with connecting pipes in an array, and the connecting pipes are connected to the blower. The outer side of the connecting pipe is equipped with an installation component. The front and rear ends of the lower end of the blower are fixedly equipped with conveying pipes, and the outer side of the conveying pipe is equipped with a reinforcement component.
[0008] Preferably, the adjustment assembly includes a mounting plate, a baffle, and a first ball screw, and the mounting plate is fixedly installed on the outer side of the upper end of the air duct. The front and rear ends of the mounting plate are slidably connected to the baffle, and the front and rear ends of the mounting plate are threadedly connected to the first ball screw.
[0009] Preferably, one end of the first ball screw is rotatably connected to the side wall of the baffle, the baffle is set in a semi-arc structure, and the radius of the baffle is consistent with the radius of the inner cavity of the air duct.
[0010] Preferably, the installation assembly includes a sleeve, a connecting rod, a clamp, and a second ball screw. The sleeve is fixedly installed on the outer side of the connecting tube body. The left and right ends of the lower end of the sleeve are slidably connected to the connecting rod. The clamp is fixedly installed on the end of the connecting rod about the inside of the sleeve. The second ball screw is connected to the middle position of the connecting rod about the outside of the sleeve via a threaded drive.
[0011] Preferably, one end of the second ball screw body is rotatably connected to the side wall of the sleeve, and the clamp is set in a semi-arc structure.
[0012] Preferably, a spring is fixedly installed at the upper end of the sleeve, and a sealing gasket is slidably connected inside the sleeve, with the bottom of the sealing gasket connected to the bottom of the spring.
[0013] Preferably, the reinforcement assembly includes a mounting frame, a pressure plate, and a third ball screw. The mounting frame is fixedly installed in an array on the outer side of one end of the conveying pipe. The pressure plate is slidably connected to the frame of the mounting frame, and the pressure plate is set in a semi-arc structure. The third ball screw is connected to the middle position of the mounting frame through a threaded drive, and the rod of the third ball screw is rotatably connected to the pressure plate.
[0014] Compared with the prior art, the present invention has at least the following beneficial effects: the blown film duct containing high-strength fiber can precisely adjust the cooling air volume according to the film material, specifications and production conditions by adjusting the two sets of baffles, which significantly improves the uniformity of film thickness, appearance quality and mechanical properties, effectively reducing the production scrap rate. At the same time, the cooperation between the sealing gasket and the clamping plate provides precise positioning and reliable sealing, avoiding airflow deviation, air leakage and pressure loss. Combined with the excellent dimensional stability of the high-strength fiber duct, the pressure plate can effectively suppress the vibration, swaying and displacement of the raw material input pipe, ensuring the continuous and stable delivery of high-temperature molten raw materials.
[0015] 1. One end of the first ball screw is rotatably connected to the side wall of the baffle, allowing the two sets of first ball screws at the front and rear of the mounting plate to be rotated according to actual conditions. This enables the baffle to slide inside the mounting plate, adjusting the distance between the two sets of baffles. Because the baffle is a semi-arc structure with a radius that matches the radius of the duct cavity, the airflow can be adjusted. By adjusting the two sets of baffles, the cooling airflow can be precisely adjusted according to the film material, specifications, and production conditions, significantly improving the film thickness uniformity, appearance quality, and mechanical properties, effectively reducing the scrap rate, and fully leveraging the advantages of high-strength fiber ducts in terms of high strength and high dimensional stability, thereby increasing production line capacity.
[0016] 2. By inserting the external tube into the inside of the sleeve, the external tube is fitted onto the outside of the connecting tube, and the external tube is made to fit against the sealing gasket. The sealing gasket slides inside the sleeve, and at the same time, the sealing gasket drives the spring to compress. Through the cooperation between the sealing gasket and the spring, the external tube is limited. Then, the second ball screw can be rotated, which drives the connecting rod to slide on the side wall of the sleeve. Because a clamp is fixedly installed on the end of the connecting rod inside the sleeve, and the clamp is set in a semi-arc structure, the clamp can be extended and retracted by the sliding of the connecting rod, and the clamp fixes the external tube on the connecting tube. The cooperation between the sealing gasket and the clamp provides precise positioning and reliable sealing, avoiding airflow deviation, air leakage and pressure loss. Combined with the excellent dimensional stability of the high-strength fiber air duct, it ensures stable delivery of cooling airflow and improves the quality of film production.
[0017] 3. By sleeved an external pipe on the outside of the conveying pipe and rotatably connected to the pressure plate through the lower end of the third ball screw, the pressure plate can be slid on the mounting frame by rotating the third ball screw, and the pressure plates move closer to the external pipe. Because the pressure plate is set in a semi-arc structure, the external pipe can be fixed to the outside of the conveying pipe. The pressure plate can effectively suppress the vibration, swing and displacement of the raw material input pipe, ensure the continuous and stable conveying of high-temperature molten raw materials, reduce material retention and degradation, maintain the interface pre-tightening force for a long time, and avoid leakage of molten raw materials and intrusion of impurities. Attached Figure Description
[0018] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:
[0019] Figure 1 This is a schematic diagram of the overall design of this utility model;
[0020] Figure 2 This is a schematic diagram showing the connection between the connecting pipe and the sleeve of this utility model;
[0021] Figure 3 This is a schematic cross-sectional view of the connection structure of the connecting pipe and the sleeve of this utility model;
[0022] Figure 4 This is a schematic diagram of the overall conveying pipe of this utility model;
[0023] Figure 5 This is a cross-sectional structural diagram of the air duct and mounting plate of this utility model;
[0024] Figure 6 This is a cross-sectional view of the sleeve of this utility model.
[0025] In the diagram: 1. Hair dryer; 2. Air duct; 3. Connecting pipe; 4. Delivery pipe; 5. Mounting plate; 6. Baffle; 7. First ball screw; 8. Sleeve; 9. Spring; 10. Sealing gasket; 11. Connecting rod; 12. Clamping plate; 13. Second ball screw; 14. Mounting bracket; 15. Pressure plate; 16. Third ball screw. Detailed Implementation
[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model, so that the implementation process of how the present application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0027] In order to solve the technical problem that the existing blown film duct containing high-strength fibers cannot adjust the air volume, making it impossible to match the corresponding cooling air volume for films with different formulations, thicknesses, and widths, thus causing defects such as local thickening, thinning, crystal points, and fisheyes in the film, this embodiment discloses the following technical content.
[0028] Please see Figures 1-6 A blown film blowing duct containing high-strength fibers includes a blown film blowing duct 1, an air duct 2, a connecting pipe 3, a conveying pipe 4, a mounting plate 5, a baffle 6, a first ball screw 7, a sleeve 8, a spring 9, a sealing gasket 10, a connecting rod 11, a clamping plate 12, a second ball screw 13, a mounting bracket 14, a pressure plate 15, and a third ball screw 16.
[0029] like Figure 1 and Figure 4 As shown, when using the blower 1 for film blowing, the blower 1 is installed in a designated position. Because both the front and rear ends of the lower end of the blower 1 are fixedly installed with conveying pipes 4, the raw material output end is connected to the conveying pipe 4, and the raw material output end is sleeved on the outside of the conveying pipe 4. Because the outside of the conveying pipe 4 is fixedly installed with mounting brackets 14 in an array, the third ball screw 16 on the mounting bracket 14 can be rotated. One end of the third ball screw 16 is rotatably connected to the pressure plate 15, and the pressure plate 15 has a semi-arc structure. In this configuration, when the third ball screw 16 is rotated, it can drive the pressure plate 15 to slide on the frame of the mounting bracket 14, and bring the pressure plate 15 closer to the conveying pipe 4, so that the pressure plate 15 is in contact with the raw material input end. Then, by rotating the third ball screw 16 respectively, and through multiple sets of pressure plates 15, the raw material input end can be fixed to the outside of the conveying pipe 4, thereby reinforcing the connection between the conveying pipe 4 and the raw material input end. The pressure plate 15 can effectively suppress the vibration, swaying and displacement of the raw material input pipe, and ensure the continuous and stable conveying of high-temperature molten raw materials.
[0030] like Figure 1 , Figure 2 , Figure 3 and Figure 6As shown, after connecting the conveying pipe 4 to the raw material input end, the air volume input pipe is inserted into the sleeve 8 and fitted onto the outside of the connecting pipe 3. When the air volume input pipe is fitted onto the outside of the connecting pipe 3, the input pipe is in contact with the sealing gasket 10. As the input end is continuously fitted onto the outside of the connecting pipe 3, the sealing gasket 10 slides inside the sleeve 8, causing the sealing gasket 10 to compress the spring 9. Thus, the cooperation between the sealing gasket 10 and the spring 9 can limit and seal the input pipe. After the input pipe is fitted into the designated position, it can fit onto the left and right sets of second ball screws 13 of the sleeve 8 respectively. The second ball screw 13 is threaded onto the connecting rod 11, and one end of the second ball screw 13 is rotatably connected to the side wall of the sleeve 8. When the second ball screw 13 is rotated, the connecting rod 11 slides on the side wall of the sleeve 8, and the connecting rod 11 drives the clamping plate 12 to move closer to the input pipe. Because the clamping plate 12 is set in a semi-arc structure, the clamping plate 12 fits against the input pipe. The mutual proximity between the two sets of clamping plates 12 can fix the input pipe to the outside of the connecting pipe 3. The cooperation between the sealing gasket 10 and the clamping plate 12 provides accurate positioning and reliable sealing, avoiding airflow deviation, air leakage and pressure loss.
[0031] like Figure 1 and Figure 5 As shown, after connecting the air volume input pipe to the connecting pipe 3, the raw material can be blown into a film through the blower 1. During the film blowing process, the first ball screw 7 can be rotated according to the actual situation. Because the first ball screw 7 is connected to the front and rear ends of the mounting plate 5 by a thread, and one end of the first ball screw 7 is rotatably connected to the side wall of the baffle 6, when the two sets of first ball screws 7 are rotated respectively, the first ball screw 7 causes the baffle 6 to slide inside the mounting plate 5. Since the baffle 6 has a semi-arc structure... The baffle 6 is set in a fixed position, and the radius of the baffle 6 is consistent with the radius of the inner cavity of the air duct 2. By rotating the first ball screw 7, the distance between the two sets of baffles 6 can be adjusted, thereby adjusting the opening of the inner cavity of the air duct 2. By adjusting the two sets of baffles 6, the cooling air volume can be precisely adjusted according to the film material, specifications and production conditions, significantly improving the uniformity of film thickness, appearance quality and mechanical properties, effectively reducing the production scrap rate, and giving full play to the advantages of high strength and high dimensional stability of the high-strength fiber air duct, thereby increasing the production line capacity.
[0032] The above completes the series of operations for the blown film duct containing high-strength fibers. Any content not described in detail herein is prior art known to those skilled in the art.
[0033] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.
[0034] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A blown film duct containing high-strength fibers, comprising a blower duct (1), characterized in that: The top of the blower (1) is fixedly installed with an air duct (2), and the air duct (2) is provided with an adjustment component. The upper side wall of the blower (1) is fixedly installed with a connecting pipe (3) in an array state, and the connecting pipe (3) is connected to the blower (1). The outer side of the connecting pipe (3) is provided with an installation component. The front and rear ends of the lower end of the blower (1) are fixedly installed with a conveying pipe (4), and the outer side of the conveying pipe (4) is provided with a reinforcement component.
2. The blown film duct containing high-strength fibers according to claim 1, characterized in that: The adjustment assembly includes a mounting plate (5), a baffle (6) and a first ball screw (7), and the mounting plate (5) is fixedly installed on the outer side of the upper end of the air duct (2). The front and rear ends of the mounting plate (5) are slidably connected to the baffle (6), and the front and rear ends of the mounting plate (5) are connected to the first ball screw (7) through threaded transmission.
3. The blown film duct containing high-strength fibers according to claim 2, characterized in that: One end of the first ball screw (7) is rotatably connected to the side wall of the baffle (6). The baffle (6) is set in a semi-arc structure, and the radius of the baffle (6) is consistent with the radius of the inner cavity of the air duct (2).
4. The blown film duct containing high-strength fibers according to claim 1, characterized in that: The installation assembly includes a sleeve (8), a connecting rod (11), a clamp (12), and a second ball screw (13). The sleeve (8) is fixedly installed on the outside of the connecting tube (3). The connecting rod (11) is slidably connected to both the left and right ends of the lower end of the sleeve (8). The clamp (12) is fixedly installed on one end of the connecting rod (11) about the inside of the sleeve (8). The second ball screw (13) is connected to the middle position of the connecting rod (11) about the outside of the sleeve (8) through threaded transmission.
5. The blown film duct containing high-strength fibers according to claim 4, characterized in that: One end of the second ball screw (13) is rotatably connected to the side wall of the sleeve (8), and the clamp (12) is set in a semi-arc structure.
6. The blown film duct containing high-strength fibers according to claim 4, characterized in that: A spring (9) is fixedly installed at the upper end of the sleeve (8), and a sealing gasket (10) is slidably connected inside the sleeve (8), and the bottom of the sealing gasket (10) is connected to the bottom of the spring (9).
7. The blown film duct containing high-strength fibers according to claim 1, characterized in that: The reinforcement assembly includes a mounting frame (14), a pressure plate (15), and a third ball screw (16). The mounting frame (14) is fixedly installed on the outer side of one end of the conveying pipe (4) in an array state. The pressure plate (15) is slidably connected to the frame of the mounting frame (14), and the pressure plate (15) is set in a semi-arc structure state. The third ball screw (16) is connected to the middle position of the frame of the mounting frame (14) through threaded transmission, and the rod of the third ball screw (16) is rotatably connected to the pressure plate (15).