Film blowing machine for degradable plastic film

Abstract

The utility model relates to the technical field of film blowing machines, and discloses a film blowing machine for degradable plastic film, including an extruder body and a frame, wherein a die outlet is installed on the upper side of one end of the extruder body located inside the frame, and fan-shaped movable grooves are provided on the inner walls of the front and rear sides of the frame. A connecting rod is arranged in the fan-shaped movable groove, one end of the connecting rod is fixedly connected to a fixed cylinder, and the other end of the connecting rod is rotatably clamped with a pressure roller. Under the influence of weight and gravity, the pressure roller cooperates with the connecting rod to swing downward with the fixed cylinder as the center. Therefore, when the plastic film passes through two groups of pressure rollers in an S shape, the two groups of pressure rollers can form a tension compensation effect on the plastic film to avoid the plastic film from being stretched and deformed, and cooperate with a blowing nozzle to directly blow and cool the plastic film. While improving the cooling efficiency, when the pressure roller moves to the top side of the fan-shaped movable groove, the winding rate of the winding mechanism can be slowed down for a period of time to avoid the problem of winding deformation.

Description

Technical Field

[0001] The utility model relates to the technical field of film blowing machines, in particular to a film blowing machine for degradable plastic films. Background Art

[0002] Plastic films are widely used in daily life, but discarded plastic films will pollute the environment. Therefore, degradable plastic films are widely used because of their pollution-free, environmentally friendly, non-toxic and degradable characteristics. During the production process of degradable plastic films, the plastic particles need to be heated and melted by a blow molding machine and then blown into a film.

[0003] In the process of winding the plastic film of the existing blow molding machine, the plastic film cools slowly, and shrinks due to cooling. In the normal winding process, the plastic film is easily deformed and tightened, making it difficult to wind the plastic film. Therefore, those skilled in the art provide a blow molding machine for degradable plastic film to solve the problems raised in the above background technology. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a film blowing machine for degradable plastic film to solve the problem that the plastic film cools slowly and shrinks when cooled, and the plastic film is easily deformed and tightened during the normal winding process, making it difficult to wind the plastic film.

[0005] To achieve the above-mentioned objectives, the utility model provides the following technical solutions: a film blowing machine for degradable plastic film, comprising an extruder body and a frame, a feed hopper being installed on the upper side of one end of the extruder body, a die outlet being installed on the upper side of one end of the extruder body located inside the frame, a winding mechanism being provided on the side of the frame away from the extruder body, fan-shaped movable grooves being provided on the front and rear inner walls of the frame, a connecting rod being provided in the fan-shaped movable groove, one end of the connecting rod being connected to a pressure roller, the other end of the connecting rod being connected to a fixed cylinder, one side of the fixed cylinder being connected to a bellows, and the other side of the fixed cylinder being provided with an air outlet.

[0006] Preferably, fans are installed on the left and right outer walls of the frame, and the fans are connected to the bellows.

[0007] Preferably, the fixed tube is hollow, the corrugated tube is connected with the air outlet nozzle through the fixed tube, and the air outlet nozzle directly blows air to cool the plastic film.

[0008] Preferably, the front and rear ends of the fixed cylinder are rotatably engaged with the inside of the fan-shaped movable groove, the fixed cylinder is fixedly connected to the connecting rod, and the pressure roller is rotatably engaged with the connecting rod. Under the influence of weight and gravity, the pressure roller cooperates with the connecting rod to swing downward with the fixed cylinder as the center. Therefore, when the plastic film passes through the two groups of pressure rollers in an S shape, the two groups of pressure rollers can form a tension compensation effect on the plastic film.

[0009] Preferably, a conveying roller is arranged above the die outlet, the conveying roller is rotatably connected to the frame, and the plastic film blown out of the die outlet is conveyed by the conveying roller.

[0010] Compared with the prior art, the utility model provides a film blowing machine for degradable plastic film, which has the following beneficial effects:

[0011] Through design, a connecting rod is arranged in the fan-shaped movable groove, one end of the connecting rod is fixedly connected to the fixed cylinder, and the other end of the connecting rod is rotatably clamped with a pressure roller. Under the influence of weight and gravity, the pressure roller cooperates with the connecting rod to swing downward with the fixed cylinder as the center. Therefore, when the plastic film passes through the two groups of pressure rollers in an S shape, the two groups of pressure rollers can form a tension compensation effect on the plastic film to avoid the plastic film from being stretched and deformed, and cooperate with the blowing nozzle to directly blow the plastic film for cooling. While improving the cooling efficiency, when the pressure roller moves to the top side of the fan-shaped movable groove, the winding rate of the winding mechanism can be slowed down for a period of time to avoid the problem of winding deformation. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a three-dimensional structural schematic diagram of a film blowing machine for a degradable plastic film provided in an embodiment of the present application.

[0013] Figure 2 It is a working schematic diagram of a film blowing machine for a degradable plastic film provided in an embodiment of the present application.

[0014] Figure 3 It is a structural schematic diagram of a fan-shaped movable groove in a film blowing machine for a degradable plastic film provided in an embodiment of the present application.

[0015] In the figure: 1. extruder body; 2. feed hopper; 3. die outlet; 4. frame; 5. conveyor roller; 6. fan-shaped movable groove; 7. fixed cylinder; 8. air outlet nozzle; 9. bellows; 10. fan; 11. connecting rod; 12. pressure roller; 13. winding mechanism. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] The utility model provides a technical solution, a film blowing machine for degradable plastic film, please refer to Figure 1 , Figure 2, including an extruder body 1 and a frame 4, a feed hopper 2 is installed on one end of the extruder body 1, a die outlet 3 is installed on one end of the extruder body 1 located inside the frame 4, a conveying roller 5 is arranged above the die outlet 3, the conveying roller 5 is rotatably connected to the frame 4, and the plastic film blown out of the die outlet 3 is conveyed by the conveying roller 5, please refer to Figure 2 , Figure 3 A winding mechanism 13 is provided on the side of the frame 4 away from the extruder body 1, and fan-shaped movable grooves 6 are provided on the inner walls on the front and rear sides of the frame 4. A connecting rod 11 is provided in the fan-shaped movable groove 6, one end of the connecting rod 11 is connected to a pressure roller 12, and the other end of the connecting rod 11 is connected to a fixed cylinder 7, one side of the fixed cylinder 7 is connected to a bellows 9, and the other side of the fixed cylinder 7 is provided with an air outlet 8.

[0018] See also Figure 2 , Figure 3 , fans 10 are installed on the outer walls of the left and right sides of the frame 4, and the fans 10 are connected with the bellows 9. The fixed cylinder 7 is hollow, and the bellows 9 is connected with the air outlet 8 through the fixed cylinder 7. The air outlet 8 blows air directly to cool the plastic film. The front and rear ends of the fixed cylinder 7 are rotatably engaged with the inside of the fan-shaped movable groove 6, and the fixed cylinder 7 is fixedly connected with the connecting rod 11. The pressure roller 12 is rotatably engaged with the connecting rod 11. Under the influence of weight and gravity, the pressure roller 12 cooperates with the connecting rod 11 to swing downward with the fixed cylinder 7 as the center. Therefore, when the plastic film passes through the two groups of pressure rollers 12 in an S shape, the two groups of pressure rollers 12 can form a tension compensation effect on the plastic film.

[0019] The film blowing machine in the utility model is composed of an extruder body 1 and a frame 4, wherein a feed hopper 2 is installed on the upper side of one end of the extruder body 1, a die outlet 3 is installed on the upper part of one end of the extruder body 1 located in the frame 4, and a conveying roller 5 is arranged above the die outlet 3, and the conveying roller 5 is rotatably connected with the frame 4, and the plastic film blown out of the die outlet 3 is conveyed by the conveying roller 5;

[0020] A fan-shaped movable groove 6 is provided inside the front and rear sides of the frame 4, a fixed cylinder 7 is rotatably connected in the fan-shaped movable groove 6, and the fixed cylinder 7 is hollow, one end of the fixed cylinder 7 is connected to a bellows 9, the bellows 9 passes through the side wall of the frame 4 and is connected to a fan 10 installed on the external side wall, and an air outlet 8 is provided on the other side of the fixed cylinder 7;

[0021] A connecting rod 11 is arranged in the fan-shaped movable groove 6, one end of the connecting rod 11 is fixedly connected to the fixed cylinder 7, and the other end of the connecting rod 11 is rotatably clamped with a pressure roller 12. Under the influence of weight and gravity, the pressure roller 12 cooperates with the connecting rod 11 to swing downward with the fixed cylinder 7 as the center. Therefore, when the plastic film passes through the two groups of pressure rollers 12 in an S shape, the two groups of pressure rollers 12 can form a tension compensation effect on the plastic film to prevent the plastic film from being stretched and deformed, and cooperate with the air outlet 8 to blow air directly to the plastic film for cooling. While improving the cooling efficiency, when the pressure roller 12 moves to the top side of the fan-shaped movable groove 6, the winding rate of the winding mechanism 13 can be slowed down for a period of time to avoid the problem of winding deformation.

[0022] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0023] In this document, unless otherwise clearly stipulated and limited, terms such as "installation", "setting", "connection", "fixation", and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in this utility model according to the specific circumstances.

[0024] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A film blowing machine for a biodegradable plastic film, comprising an extruder body (1) and a frame (4), characterized in that: A feed hopper (2) is installed on the upper side of one end of the extruder body (1), a die outlet (3) is installed on the upper side of one end of the extruder body (1) located inside the frame (4), a winding mechanism (13) is provided on the side of the frame (4) away from the extruder body (1), fan-shaped movable grooves (6) are provided on the inner walls on both sides of the front and rear sides of the frame (4), a connecting rod (11) is provided in the fan-shaped movable groove (6), one end of the connecting rod (11) is connected to a pressure roller (12), the other end of the connecting rod (11) is connected to a fixed cylinder (7), one side of the fixed cylinder (7) is connected to a bellows (9), and the other side of the fixed cylinder (7) is provided with an air outlet nozzle (8).

2. The film blowing machine for a degradable plastic film according to claim 1, characterized in that: The fixed cylinder (7) is hollow, and the bellows (9) is connected to the air outlet nozzle (8) through the fixed cylinder (7).

3. The film blowing machine for a degradable plastic film according to claim 1, characterized in that: Fans (10) are installed on the left and right outer walls of the frame (4), and the fan (10) is connected to the bellows (9).

4. The film blowing machine for a degradable plastic film according to claim 1, characterized in that: The front and rear ends of the fixed cylinder (7) are rotatably engaged with the interior of the fan-shaped movable groove (6), and the fixed cylinder (7) is fixedly connected to the connecting rod (11).

5. The film blowing machine for a degradable plastic film according to claim 1, characterized in that: The pressure roller (12) is rotatably engaged with the connecting rod (11).

6. The film blowing machine for a degradable plastic film according to claim 1, characterized in that: A conveying roller (5) is arranged above the die outlet (3).

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