A preheating and discharge traction mechanism for a blown film machine
By designing a preheating and discharge traction mechanism for blown film machines, the preheated film is automatically pulled using components such as sliding sleeves, telescopic frames, and winding reels, solving the problem of inconvenient manual traction operations and improving production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XIANTAO MAOSHENG PLASTIC PROD CO LTD
- Filing Date
- 2025-04-30
- Publication Date
- 2026-05-26
AI Technical Summary
When there is no tail material from the previous blown film extrusion, the film preheated and extruded by the blown film machine needs to be manually pulled, which is inconvenient to operate, takes up production time, and affects production efficiency.
Design a preheating and discharge traction mechanism for a blown film machine, including a sliding sleeve, a telescopic frame, a fixed pulley, a take-up reel, and a spring clamp. The preheated and extruded film is automatically pulled to the top of the limiting frame by a traction rope, and the film is fixed by the take-up reel and the spring clamp, simplifying the operation process.
It enables automatic preheating of the film without manual operation, improving production efficiency, simplifying the operation process, and reducing production time.
Smart Images
Figure CN224276183U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of blown film technology, specifically a preheating and discharge traction mechanism for a blown film machine. Background Technology
[0002] Each time a blown film machine is started, it needs to be preheated. Only when the temperature reaches the blowing temperature of the corresponding material can a high-quality film be blown out. During use, the blown film machine needs to be preheated after each shutdown, so preheating is very common. The film blown out during the initial preheating is considered waste and needs to be manually removed before it can be passed from bottom to top through the limiting frame and extrusion roller frame for normal extrusion production.
[0003] During equipment use, although a section of the film tail from the previous production is usually left to pull the new preheated extruded film, there are often situations where no such section is left, such as when the size or material is changed, the previous batch has been completely finished, and all the films have been completely packaged, leaving no old film to pull the new film for the next batch. In this case, it is necessary to manually pull the preheated extruded film upwards onto the production line.
[0004] During the traction process, the upper extrusion roller frame and the limiting frame are fixedly installed by the support frame. The extrusion roller frame is located at a height of 5 meters and there is a ladder to climb. However, since the film needs to pass through the inside of the limiting frame, when manually tractioning, both hands need to be alternately inserted into the traction frame, and the left and right hands are alternately switched to gradually move the position upward to pull the preheated extruded film up. The operation is inconvenient, takes up production time, and affects production efficiency. Utility Model Content
[0005] To address the shortcomings of existing technologies, this utility model provides a preheating and discharge traction mechanism for blown film machines, which solves the problems of inconvenience, time consumption, and reduced production efficiency caused by the lack of manual traction for the preheated and extruded film of the blown film machine.
[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution:
[0007] A preheating and discharge traction mechanism for a blown film machine includes a sliding sleeve fixedly connected to a support frame between an extrusion roller frame and a limiting frame. The sliding sleeve is located below one side of the extrusion roller frame. A telescopic frame is horizontally slidably connected inside the sliding sleeve. A fixed pulley is installed at one end of the telescopic frame corresponding to the extrusion roller frame. A rotatable take-up reel is installed on the sliding sleeve. A traction rope is wound on the take-up reel. One end of the traction rope passes around the fixed pulley, passes downward through the limiting frame, and extends to the top of the blown film machine below. A spring clip is connected to the lower end of the traction rope. The spring clip can clamp and install on the upper end of the blown film of the blown film machine.
[0008] Preferably, the sliding sleeve is a square tube, and the telescopic frame is a square rod that matches the shape of the sliding sleeve.
[0009] Preferably, the telescopic frame has two handles fixed on it, and the two handles are located on both sides of the sliding sleeve.
[0010] Preferably, the handle located on the side of the sliding sleeve near the fixed pulley is fixed to the front or bottom of the telescopic frame, and the handle located on the side of the sliding sleeve away from the fixed pulley is fixed to the front, top, or bottom of the telescopic frame.
[0011] Preferably, a crank handle is connected to the shaft of the take-up reel.
[0012] Preferably, the winding reel is mounted on the sliding sleeve via a bracket, and the crank handle and the bracket are provided with insertion holes for inserting and installing locking pins.
[0013] Preferably, a counterweight is fixed at the lower end of the traction rope near the spring clip.
[0014] Compared with the prior art, the present invention has the following beneficial effects:
[0015] This invention features a sliding sleeve and a telescopic frame located below one side of the extrusion roller frame. The telescopic frame supports the traction rope, allowing the traction rope to be easily unwound from above the limiting frame onto the blown film machine. The preheated and extruded film is secured by spring clips. Rotating the take-up reel allows the preheated and extruded film to pass through the limiting frame and be pulled to the position of the extrusion roller frame. Removing the telescopic frame does not affect normal blown film production. The structure is simple, easy to use, and conducive to efficient production. It solves the problems of inconvenience, time-consuming operations, and reduced production efficiency caused by the need for manual traction when the preheated and extruded film of the blown film machine is not pulled by the previous tail material. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0017] Figure 2 This is a partial structural diagram of the telescopic frame at the corresponding position after the traction rope is wound up according to this utility model;
[0018] Figure 3 This is a partial structural diagram of the corresponding position after the telescopic frame of this utility model has been repositioned.
[0019] In the diagram: 1. Extrusion roller frame; 2. Limiting frame; 3. Support frame; 4. Sliding sleeve; 5. Telescopic frame; 6. Fixed pulley; 7. Winding reel; 8. Traction rope; 9. Film blowing machine; 10. Spring clip; 11. Film; 12. Handle; 13. Crank handle; 14. Counterweight; 15. Bracket; 16. Locking pin; 17. Insertion hole. Detailed Implementation
[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0021] like Figure 1-3 As shown, this utility model provides a technical solution: a preheating and discharge traction mechanism for a blown film machine, including a sliding sleeve 4 fixedly connected to a support frame 3 between the extrusion roller frame 1 and the limiting frame 2. The sliding sleeve 4 is located below one side of the extrusion roller frame 1. A telescopic frame 5 is horizontally slidably connected inside the sliding sleeve 4. A fixed pulley 6 is installed at one end of the telescopic frame 5 corresponding to the extrusion roller frame 1. The sliding sleeve 4 is a square tube, and the telescopic frame 5 is a square rod that matches the shape of the sliding sleeve 4 to prevent rotation and ensure that the fixed pulley 6 is always vertical.
[0022] Two handles 12 are fixed on the telescopic frame 5, and the two handles 12 are located on both sides of the sliding sleeve 4. The handle 12 located on the side of the sliding sleeve 4 closer to the fixed pulley 6 is fixed on the front or bottom of the telescopic frame 5, and the handle 12 located on the side of the sliding sleeve 4 away from the fixed pulley 6 is fixed on the front, top or bottom of the telescopic frame 5, so as to facilitate moving the telescopic frame 5 to the left or right.
[0023] A rotatable take-up reel 7 is mounted on the sliding sleeve 4. A traction rope 8 is wound on the take-up reel 7. A crank 13 is connected to the rotating shaft of the take-up reel 7 to facilitate rotating the take-up reel 7 to wind up the traction rope 8. The take-up reel 7 is mounted on the sliding sleeve 4 via a bracket 15. The crank 13 and the bracket 15 are provided with insertion holes 17 for inserting a locking pin 16. After inserting the locking pin 16 into the insertion holes 17 on the crank 13 and the bracket 15 at the same time, the take-up reel 7 can be prevented from rotating.
[0024] One end of the traction rope 8 passes over the fixed pulley 6, passes down through the limiting frame 2, and extends to the top of the blown film machine 9 below. The lower end of the traction rope 8 is connected to a spring clip 10, which can be clamped and installed on the upper end of the blown film 11 of the blown film machine 9. A counterweight 14 is fixed at the lower end of the traction rope 8 near the spring clip 10 to facilitate unwinding the traction rope 8.
[0025] Working principle:
[0026] By moving the telescopic frame 5 to the left using handle 12, the telescopic frame 5 supports the lower end of the traction rope 8 above the limit frame 2 via the fixed pulley 6. By rotating the take-up reel 7, under the weight of the counterweight 14, the traction rope 8 is unwound above the blown film machine 9. After the preheated and extruded film 11 is fixed by the spring clip 10, the take-up reel 7 can be rotated by the crank handle 13 to pull the preheated and extruded film 11 upwards, allowing it to pass smoothly through the limit frame 2 and be pulled to the position of the extrusion roller frame 1. Inserting the locking pin 16 into the insertion hole 17 on the bracket 15 and the crank handle 13 will prevent the take-up reel 7 from rotating. After removing the spring clip 10, the film 11 can be manually passed around the extrusion roller frame 1 to complete the traction work. Moving the telescopic frame 5 to the right prevents interference with normal blown film production and is easy to use.
[0027] It should be noted that, in this document, terms such as “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 process, method, article, or apparatus.
[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A preheating and discharge traction mechanism for a blown film machine, characterized in that: Includes a sliding sleeve (4) fixedly connected to a support frame (3) between the extrusion roller frame (1) and the limiting frame (2). The sliding sleeve (4) is located below one side of the extrusion roller frame (1). A telescopic frame (5) is horizontally slidably connected inside the sliding sleeve (4). A fixed pulley (6) is installed at one end of the telescopic frame (5) corresponding to the extrusion roller frame (1). A rotatable take-up reel (7) is installed on the sliding sleeve (4). A traction rope (8) is wound on the take-up reel (7). One end of the traction rope (8) passes around the fixed pulley (6), passes downward through the limiting frame (2), and extends to the top of the blown film machine (9) below. A spring clip (10) is connected to the lower end of the traction rope (8). The spring clip (10) can clamp the upper end of the blown film (11) blown out by the blown film machine (9).
2. The preheating and discharge traction mechanism for a blown film machine according to claim 1, characterized in that: The sliding sleeve (4) is a square tube, and the telescopic frame (5) is a square rod that matches the shape of the sliding sleeve (4).
3. The preheating and discharge traction mechanism for a blown film machine according to claim 1, characterized in that: The telescopic frame (5) has two handles (12) fixed on it, and the two handles (12) are located on both sides of the sliding sleeve (4).
4. The preheating and discharge traction mechanism for a blown film machine according to claim 3, characterized in that: The handle (12) located on the side of the sliding sleeve (4) near the fixed pulley (6) is fixed to the front or bottom of the telescopic frame (5), and the handle (12) located on the side of the sliding sleeve (4) away from the fixed pulley (6) is fixed to the front, top or bottom of the telescopic frame (5).
5. The preheating and discharge traction mechanism for a blown film machine according to claim 1, characterized in that: A crank (13) is connected to the shaft of the take-up reel (7).
6. The preheating and discharge traction mechanism for a blown film machine according to claim 5, characterized in that: The winding reel (7) is mounted on the sliding sleeve (4) via a bracket (15), and the crank handle (13) and the bracket (15) are provided with a socket (17) for inserting and installing a locking pin (16).
7. The preheating and discharge traction mechanism for a blown film machine according to claim 1, characterized in that: A counterweight (14) is fixed at the lower end of the traction rope (8) near the spring clip (10).