Traction mechanism of multi-layer co-extrusion film blowing machine

Abstract

The utility model relates to the technical field of film blowing machines, and discloses a multi-layer co-extrusion film blowing machine traction mechanism which comprises a film blowing machine rack, and a first supporting frame and a second supporting frame are fixedly connected to the positions, close to the upper end and the lower end, of the outer surface of the front side of the film blowing machine rack respectively. A first motor and a second motor are installed on the outer surface of the first supporting frame and the outer surface of the second supporting frame correspondingly, the output end of the first motor and the output end of the second motor are fixedly connected with two winding shafts correspondingly, the outer surfaces of the two winding shafts are fixedly sleeved with two winding wheels correspondingly, and winding ropes are wound around the outer surfaces of the winding wheels. The lower pressing roller is driven by the electric push rod to be matched with the carrier roller to fix one end of the film, the two winding shafts are driven by the first motor and the second motor correspondingly, the connecting plate is driven to move in cooperation with the winding wheel and the winding rope, one end of the film is conveyed, relay conveying through multiple workers is not needed, and manpower is saved.

Description

Technical Field

[0001] This utility model relates to the field of blown film machine technology, specifically a traction mechanism for a multi-layer co-extrusion blown film machine. Background Technology

[0002] FIBCs (Flexible Intermediate Bulk Containers) are portable containers typically used for loading materials. In their production, FIBCs are primarily made of polyethylene or polypropylene, formed through film drawing, filament drawing, weaving, and sewing. Traditional cast films are single-layer extruded monofilaments, resulting in generally low strength and limited functionality. Current technology utilizes multi-layer co-extrusion blown film machines, where multiple layers are simultaneously extruded from multiple main units and laminated outside the die. This allows for the combination of various materials and formulations, achieving higher monofilament strength and a wider range of product functionalities.

[0003] Each time the blown film machine is started, multiple workers need to take turns to slowly transport the newly pulled film to the front of the winding machine. Since the height of the frame is at least three meters and some even reach more than twenty meters, the process of pulling the film by multiple workers is time-consuming and labor-intensive, increasing labor costs. Therefore, a multi-layer co-extrusion blown film machine traction mechanism was proposed. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a traction mechanism for a multi-layer co-extrusion blown film machine, thereby solving the problems mentioned in the background section.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a traction mechanism for a multi-layer co-extrusion blown film machine, comprising a blown film machine frame, wherein a first support frame and a second support frame are fixedly connected to the upper and lower ends of the front outer surface of the blown film machine frame, respectively; a take-up shaft is rotatably connected between the outer surfaces of the first support frame and the second support frame; a first motor and a second motor are respectively mounted on the outer surfaces of the first support frame and the second support frame; the output ends of the first motor and the second motor are fixedly connected to the two take-up shafts, and two take-up wheels are fixedly sleeved on the outer surfaces of the two take-up shafts; a take-up rope is wound around the outer surface of the take-up wheels; a connecting plate is fixedly connected to the other end of the take-up rope; and a connecting column is fixedly connected between the two connecting plates.

[0006] Furthermore, a U-shaped frame is fixedly connected to the top of the blown film machine frame, and a support roller is provided between the opposite outer surfaces of the left and right sides of the U-shaped frame. The support roller is a hollow roller, and several through holes are opened on the top outer surface of the support roller. A conveying pipe is connected inside the support roller.

[0007] Furthermore, a roller is fixedly connected to the top outer surface of the lower connecting plate, and an electric push rod is fixedly installed on the outer surface of the upper connecting plate, with a lower pressure roller installed at the output end of the electric push rod.

[0008] Furthermore, a cooling plate is installed on the bottom outer surface of the support roller, with the cooling end of the cooling plate located inside the support roller and the heating end of the cooling plate located outside the support roller.

[0009] Furthermore, when the first motor drives the winding shaft connected to its output end to rotate and wind up the winding rope, the second motor drives the winding shaft connected to its output end to rotate and eject the winding rope.

[0010] Furthermore, anti-slip pads are fixedly connected to the outer surfaces of both the idler roller and the lower pressure roller.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. The traction mechanism of this multi-layer co-extrusion blown film machine uses an electric push rod to drive the lower pressure roller in conjunction with the support roller to fix one end of the film. The first motor and the second motor drive two take-up shafts respectively, which, together with the take-up wheel and take-up rope, drive the connecting plate to move and transport one end of the film. This eliminates the need for multiple people to relay the film, saving manpower.

[0013] 2. The traction mechanism of this multi-layer co-extrusion blown film machine delivers airflow to the conveying pipe through an external fan. The airflow is blown onto the film through the through holes on the surface of the support roller to cool the film. The cooling plate works to keep the airflow inside the support roller in a cold state, which improves the cooling effect. Attached Figure Description

[0014] Figure 1 This is a front view structural diagram of the present invention;

[0015] Figure 2 This is a schematic diagram of the connecting plate and related structures of this utility model;

[0016] Figure 3 This is a front view schematic diagram of the support roller and related structures of this utility model;

[0017] Figure 4 This is a bottom view of the support roller and related structures of this utility model.

[0018] In the diagram: 1. Blown film machine frame; 2. First support frame; 3. Second support frame; 4. Take-up shaft; 5. First motor; 6. Second motor; 7. Take-up reel; 8. Take-up rope; 9. Connecting plate; 10. Idler roller; 11. Electric push rod; 12. Lower pressure roller; 13. U-shaped frame; 14. Support roller; 15. Through hole; 16. Conveying pipe; 17. Cooling plate. Detailed Implementation

[0019] 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. Example

[0020] Please refer to the following: Figures 1-4 This utility model provides a technical solution: a traction mechanism for a multi-layer co-extrusion blown film machine, including a blown film machine frame 1. A first support frame 2 and a second support frame 3 are fixedly connected to the upper and lower ends of the front outer surface of the blown film machine frame 1, respectively. A take-up shaft 4 is rotatably connected between the outer surfaces of the first support frame 2 and the second support frame 3. A first motor 5 and a second motor 6 are respectively mounted on the outer surfaces of the first support frame 2 and the second support frame 3. The output ends of the first motor 5 and the second motor 6 are fixedly connected to the two take-up shafts 4, respectively. Two take-up wheels 7 are fixedly sleeved on the outer surfaces of the two take-up shafts 4, and a take-up rope 8 is wound around the outer surface of the take-up wheels 7. The other end is fixedly connected to a connecting plate 9, and a connecting column is fixedly connected between the two connecting plates 9. Specifically, the first motor 5 and the second motor 6 work, respectively driving the two take-up shafts 4 to rotate, and driving the take-up wheels 7 on them to rotate. When the lower take-up shaft 4 rotates, it drives the take-up wheel 7 on it to take up the take-up rope 8. When the upper take-up shaft 4 rotates, it drives the take-up wheel 7 on it to rotate and release the upper take-up rope 8. As one end of the take-up rope 8 is taken up and the other end of the take-up rope 8 is released, the connecting plate 9 is moved, so that the connecting plate 9 conveys one end of the film. There is no need for multiple people to relay the conveying, saving manpower.

[0021] In this embodiment, a U-shaped frame 13 is fixedly connected to the top of the blown film machine frame 1. A support roller 14 is provided between the opposite outer surfaces of the left and right sides of the U-shaped frame 13. The support roller 14 is a hollow roller. Several through holes 15 are opened on the top outer surface of the support roller 14. A conveying pipe 16 is connected inside the support roller 14. Specifically, after the film is blown out by the blown film machine, the film is placed on the support roller 14. An external fan delivers airflow to the conveying pipe 16. The airflow is blown onto the film through the through holes 15 on the surface of the support roller 14 to cool the film.

[0022] In this embodiment, a support roller 10 is fixedly connected to the top outer surface of the lower connecting plate 9, and an electric push rod 11 is fixedly installed on the outer surface of the upper connecting plate 9. A lower pressure roller 12 is installed at the output end of the electric push rod 11. Specifically, the film that has just been pulled up is placed between the support roller 10 and the lower pressure roller 12 by manual means. The lower pressure roller 12 is moved downward by the electric push rod 11, and the film is clamped and fixed in conjunction with the support roller 10.

[0023] In this embodiment, a cooling plate 17 is installed on the bottom outer surface of the support roller 14. The cooling end of the cooling plate 17 is located inside the support roller 14, and the heating end of the cooling plate 17 is located outside the support roller 14. Specifically, by working with the cooling plate 17, the airflow inside the support roller 14 is in a cold air state, which improves the cooling effect.

[0024] In this embodiment, when the first motor 5 drives the winding shaft 4 connected to its output end to rotate and wind up the winding rope 8, the second motor 6 drives the winding shaft 4 connected to its output end to rotate and eject the winding rope 8.

[0025] In this embodiment, anti-slip pads are fixedly connected to the outer surfaces of both the idler roller 10 and the lower pressure roller 12. Specifically, the anti-slip pads increase the friction between the idler roller 10 and the lower pressure roller 12 and the film, preventing the film from detaching from between the idler roller 10 and the lower pressure roller 12.

[0026] Working principle: In use, after the film is blown by the blown film machine, the film is first placed manually between the support roller 10 and the lower pressure roller 12. The lower pressure roller 12 is moved downward by the electric push rod 11, which, together with the support roller 10, clamps and fixes the film. The first motor 5 and the second motor 6 drive the two winding shafts 4 to rotate, which in turn drive the winding wheels 7 on them to rotate. When the lower winding shaft 4 rotates, it drives the winding wheel 7 to wind up the winding rope 8. When the upper winding shaft 4 rotates, it drives the winding wheel 7 to rotate and unwind the upper winding rope 8. As one end of the winding rope 8 is wound up and the other end is unwound, the connecting plate 9 is moved, so that the connecting plate 9 conveys one end of the film. This eliminates the need for multiple people to relay the conveying, saving manpower.

[0027] After the film is blown out by the blown film machine, the film is placed on the support roller 14. An external fan delivers airflow into the delivery pipe 16. The airflow is blown onto the film through the through holes 15 on the surface of the support roller 14 to cool the film. The cooling plate 17 works to keep the airflow inside the support roller 14 in a cold air state, which improves the cooling effect.

[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 multi-layer co-extrusion blown film machine pulling mechanism comprising a blown film machine frame (1), characterized in that: The front outer surface of the blown film machine frame (1) is fixedly connected to the upper and lower ends of the first support frame (2) and the second support frame (3), respectively. The outer surfaces of the first support frame (2) and the second support frame (3) are rotatably connected to the take-up shaft (4). The outer surfaces of the first support frame (2) and the second support frame (3) are respectively equipped with the first motor (5) and the second motor (6). The output ends of the first motor (5) and the second motor (6) are fixedly connected to the two take-up shafts (4). The outer surfaces of the two take-up shafts (4) are fixedly fitted with two take-up wheels (7). The outer surfaces of the take-up wheels (7) are wound with take-up ropes (8). The other end of the take-up ropes (8) is fixedly connected to the connecting plate (9). The two connecting plates (9) are fixedly connected to the connecting column.

2. A multi-layer co-extrusion film blowing machine traction mechanism according to claim 1, characterized in that: The top of the blown film machine frame (1) is fixedly connected to a U-shaped frame (13). A support roller (14) is provided between the opposite outer surfaces of the left and right sides of the U-shaped frame (13). The support roller (14) is a hollow roller. Several through holes (15) are opened on the top outer surface of the support roller (14). A conveying pipe (16) is connected inside the support roller (14).

3. A multi-layer co-extrusion film blowing machine traction mechanism according to claim 1, characterized in that: A roller (10) is fixedly connected to the top outer surface of the lower connecting plate (9), and an electric push rod (11) is fixedly installed on the outer surface of the upper connecting plate (9). A lower pressure roller (12) is installed at the output end of the electric push rod (11).

4. A multi-layer co-extrusion film blowing machine traction mechanism according to claim 2, characterized in that: A cooling plate (17) is installed on the bottom outer surface of the support roller (14). The cooling end of the cooling plate (17) is located inside the support roller (14), and the heating end of the cooling plate (17) is located outside the support roller (14).

5. A multi-layer co-extrusion film blowing machine traction mechanism according to claim 1, characterized in that: When the first motor (5) drives the winding shaft (4) connected to its output end to rotate and wind up the winding rope (8), the second motor (6) drives the winding shaft (4) connected to its output end to rotate and eject the winding rope (8).

6. A multi-layer co-extrusion film blowing machine traction mechanism according to claim 3, characterized in that: The outer surfaces of both the idler roller (10) and the lower pressure roller (12) are fixedly connected with anti-slip pads.

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