Cleaning and cooling device for a film blowing machine

Abstract

The utility model relates to the field of blown film machine discloses a kind of cleaning cooling device for blown film machine, including machine body, the surface of machine body is provided with adjustable cooling mechanism, the adjustable cooling mechanism includes fixed base, the bottom end of the outer wall of fixed base is fixedly connected with three groups of connection valve, the bottom end of fixed base is fixedly connected with support, the bottom end of the outer wall of support is fixedly connected with motor, the output shaft of motor is fixedly connected with threaded rod, the surface of threaded rod is threadedly connected with connecting plate, the end, away from threaded rod, of connecting plate is fixedly connected with sliding ring.In the utility model, sliding ring is driven to move up and down by motor drive threaded rod, and the output angle of exhaust port can be adjusted flexibly by the linkage of articulated rod and fixed frame, when sliding ring moves up, articulated rod pushes exhaust port to rotate outward, expanding cooling coverage;when sliding ring moves down, exhaust port rotates inward, focusing cooling area.

Description

Technical Field

[0001] This utility model relates to the field of blown film machines, and in particular to a cleaning and cooling device for blown film machines. Background Technology

[0002] A blown film machine is a core piece of equipment that processes plastic raw materials into plastic films. It is widely used in packaging, agriculture, daily necessities, and industrial fields (such as food packaging bags, agricultural greenhouse films, shopping bags, and cling film). Its core principle is to transform solid plastic granules into continuous, uniform, flexible films through a process of "heating and melting plastic → extruding into tubular films → blowing air to expand → cooling and shaping → traction and winding". It features high production efficiency and flexible and adjustable film specifications.

[0003] The blown film machine is the core equipment in plastic film production. Its cooling process directly affects the film's forming quality, physical properties (such as flatness and tensile strength), and production efficiency.

[0004] However, traditional cooling devices often have fixed-angle exhaust ports, which can only provide cooling for films of a specific width or thickness. When producing blown films of different specifications (such as narrow-width thin-walled films and wide-width thick-walled films), the fixed-angle cooling air cannot evenly cover the film surface, which can easily lead to film wrinkles caused by excessively rapid local cooling or insufficient local cooling causing inadequate shaping. To address these issues, a cleaning and cooling device for blown film machines is proposed. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a cleaning and cooling device for a blown film machine, which aims to improve the problem that the exhaust port of traditional cooling devices in the prior art is mostly designed with a fixed angle.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a cleaning and cooling device for a blown film machine, comprising a body, wherein an adjustable cooling mechanism is provided on the surface of the body; The adjustable cooling mechanism includes a fixed base, three sets of connecting valves fixedly connected to the bottom of the outer wall of the fixed base, a bracket fixedly connected to the bottom of the fixed base, a motor fixedly connected to the bottom of the outer wall of the bracket, a threaded rod fixedly connected to the output shaft of the motor, a connecting plate threadedly connected to the surface of the threaded rod, a sliding ring fixedly connected to the end of the connecting plate away from the threaded rod, a guide rod fixedly connected to the bottom of the fixed base, multiple sets of external air outlets fixedly connected to the outer arc surface of the fixed base, a hinge rod hinged to the outer arc surface of the sliding ring, a fixed frame fixedly connected to the top of the outer wall of the external air outlet, an exhaust port rotatably connected to the inner side of the fixed frame, and a telescopic hose fixedly connected to the bottom of the outer wall of the exhaust port.

[0007] As a further description of the above technical solution: A protrusion is fixedly connected to the top of the outer wall of the exhaust port, and a cover plate is elastically connected to the outer side wall of the protrusion by a spiral spring.

[0008] As a further description of the above technical solution: The fixed base is fixedly connected to the outer arc surface at the top of the machine body, and the threaded rod is rotatably connected to the bottom end of the outer wall of the fixed base.

[0009] As a further description of the above technical solution: The connecting plate is provided in two sets, and the guide rod passes through and is slidably connected to the inner side wall of the right connecting plate.

[0010] As a further description of the above technical solution: The sliding ring is slidably connected to the outer surface of the external air outlet, and the end of the hinge rod away from the sliding ring is hinged to the outer sidewall of the exhaust port.

[0011] As a further description of the above technical solution: The bottom end of the outer wall of the telescopic hose is fixedly connected to the upper surface of the external air outlet.

[0012] As a further description of the above technical solution: One end of the spiral spring is fixedly connected to the rotation center axis of the cover plate, and the other end of the spiral spring is fixedly connected to the outer sidewall of the protrusion.

[0013] As a further description of the above technical solution: The cover plate is rotatably connected to the outer sidewall of the protrusion.

[0014] This utility model has the following beneficial effects: 1. In this utility model, the sliding ring is moved up and down by the threaded rod driven by the motor. Combined with the linkage between the hinge rod and the fixed frame, the exhaust angle of the exhaust port can be flexibly adjusted. When the sliding ring moves up, the hinge rod pushes the exhaust port to rotate outward, expanding the cooling coverage area; when the sliding ring moves down, the exhaust port rotates inward, focusing the cooling area.

[0015] 2. In this utility model, the cover plate at the top of the exhaust port is automatically opened and closed by a spiral spring. When the air is supplied, the cooling air can be forced open by the cover plate to allow normal airflow. When the air is not in use, the spiral spring drives the cover plate to reset and block the exhaust port, effectively preventing dust and impurities from entering the air passage and avoiding air passage blockage and membrane contamination. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a cleaning and cooling device for a blown film machine proposed in this utility model; Figure 2This is a bottom view of the adjustable cooling mechanism of a cleaning and cooling device for a blown film machine proposed in this utility model; Figure 3 This is a top view of the adjustable cooling mechanism of a cleaning and cooling device for a blown film machine proposed in this utility model; Figure 4 This is a partial cross-sectional view of the cover plate of a cleaning and cooling device for a blown film machine proposed in this utility model.

[0017] Legend: 1. Body; 2. Adjustable cooling mechanism; 21. Fixed base; 22. Connecting valve; 23. Bracket; 24. Motor; 25. Threaded rod; 26. Connecting plate; 27. Sliding ring; 28. Guide rod; 29. ​​External air outlet; 210. Hinge rod; 211. Fixed frame; 212. Telescopic hose; 213. Exhaust port; 214. Protrusion; 215. Scroll spring; 216. Cover plate. Detailed Implementation

[0018] 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.

[0019] Reference Figure 1 - Figure 3 The present invention provides an embodiment of a cleaning and cooling device for a blown film machine, comprising a body 1, which is a prior art device. A plastic heating module is provided on the right side of the body 1. After the plastic particles are heated, they are fed to the central forming point through a conveying module. After forming, the plastic particles can be uniformly cooled by an adjustable cooling mechanism 2. The adjustable cooling mechanism 2 is provided on the surface of the body 1.

[0020] Reference Figure 2 and Figure 3The adjustable cooling mechanism 2 includes a fixed base 21. Three sets of connecting valves 22 are fixedly connected to the bottom of the outer wall of the fixed base 21. Through the connection valves 22, an external air pipe can be connected to supply air to the inside of the fixed base 21. A bracket 23 is fixedly connected to the bottom of the fixed base 21. A motor 24 is fixedly connected to the bottom of the outer wall of the bracket 23. A threaded rod 25 is fixedly connected to the output shaft of the motor 24. The fixed base 21 is fixedly connected to the outer arc surface of the top of the body 1. The threaded rod 25 is rotatably connected to the bottom of the outer wall of the fixed base 21. A connecting plate 26 is threadedly connected to the surface of the threaded rod 25. A sliding ring 27 is fixedly connected to the end of the connecting plate 26 away from the threaded rod 25. When the motor 24 drives the threaded rod 25 to rotate, the connecting plate 26 on its surface will cause the sliding ring 27 to move up and down in the threaded manner. The sliding ring 27 is slidably connected to the outer surface of the external air outlet 29. A guide rod 28 is fixedly connected to the bottom end of the fixed base 21. Two sets of guide rods are provided on the connecting plate 26. The guide rod 28 passes through and is slidably connected to the inner side wall of the right connecting plate 26. By providing the guide rod 28, the movement position of the sliding ring 27 can be guided so that it can only move up and down in a straight line.

[0021] Reference Figure 2 and Figure 3 The outer arc surface of the fixed base 21 is fixedly connected to multiple sets of external air outlets 29. Each external air outlet 29 has an internal cavity and communicates with the fixed base 21. This allows gas to enter the external air outlets 29 when the connecting valve 22 supplies gas to the fixed base 21. The outer arc surface of the sliding ring 27 is hinged to a hinge rod 210. The end of the hinge rod 210 away from the sliding ring 27 is hinged to the outer sidewall of the exhaust port 213. When the sliding ring 27 moves up and down, the angle of the exhaust port 213 is adjusted via the hinge rod 210. This allows for adjustment of the air outlet position, preventing the cooling air angle from being fixed during blown film production of different sizes. The top of the outer wall of the external air outlet 29 is fixedly connected to a fixing frame 211, and the inner side of the fixing frame 211 is rotatably connected to an exhaust port 213. The bottom of the outer wall of the exhaust port 213 is fixedly connected to a telescopic hose 212, and the bottom of the outer wall of the telescopic hose 212 is fixedly connected to the upper surface of the external air outlet 29. When the hinge rod 210 pushes the exhaust port 213 to rotate and adjust the angle, the exhaust port 213 will rotate around its rotation center point.

[0022] Reference Figure 3 - Figure 4A protrusion 214 is fixedly connected to the top of the outer wall of the exhaust port 213. A cover plate 216 is elastically connected to the outer side wall of the protrusion 214 through a spiral spring 215. One end of the spiral spring 215 is fixedly connected to the rotation center axis of the cover plate 216, and the other end of the spiral spring 215 is fixedly connected to the outer side wall of the protrusion 214. The function of the spiral spring 215 is to reset the position of the cover plate 216 after rotation. The cover plate 216 is rotatably connected to the outer side wall of the protrusion 214. By providing the cover plate 216, the air outlet on the upper surface of the exhaust port 213 can be blocked to prevent dust from being absorbed inside the exhaust port 213 when it is not in use. At the same time, when the exhaust port 213 is emitting air, the gas will push the cover plate 216 open.

[0023] Working principle: Before the adjustable cooling mechanism 2 starts working, it first connects to the external air pipe through three sets of connecting valves 22 fixedly connected to the bottom of the outer wall of the fixed seat 21. The external air pipe supplies air to the inside of the fixed seat 21 through the connecting valves 22. Since the multiple sets of external air outlets 29 fixedly connected to the outer arc surface of the fixed seat 21 have cavities inside and are connected to the fixed seat 21, the gas will flow into the external air outlets 29 synchronously after entering the fixed seat 21. After the gas enters the external air outlets 29, it continues to flow upward and impacts the exhaust port 213 connected to the external air outlets 29 through the telescopic hose 212. At this time, the cover plate 216, which is elastically connected to the outer side wall of the protrusion 214 fixedly connected to the top of the outer wall of the exhaust port 213 through the spiral spring 215, is blown open by the gas. The gas is discharged from the exhaust port 213 to cool the blown film after it is formed.

[0024] When the cooling air angle needs to be adjusted according to the different sizes of the blown film, the motor 24 fixed to the bottom of the outer wall of the bracket 23 is started. The output shaft of the motor 24 drives the threaded rod 25 fixedly connected to it to rotate. The connecting plate 26 threaded to the surface of the threaded rod 25 rotates accordingly. Since the guide rod 28 fixedly connected to the bottom of the fixed seat 21 passes through and is slidably connected to the inner side wall of the right connecting plate 26, the guide rod 28 guides the connecting plate 26, so that the connecting plate 26 can only drive the sliding ring 27 fixedly connected to the end away from the threaded rod 25 to move up and down linearly along the outer surface of the external air outlet 29. When the sliding ring 27 moves up and down, the hinge rod 210 hinged to its outer arc surface moves synchronously. The hinge rod 210 moves away from the sliding ring 29. One end of the rotating ring 27 is hinged to the outer sidewall of the exhaust port 213, and the exhaust port 213 is rotatably connected to the inner side of the fixing frame 211 through the fixing frame 211. Therefore, the hinge rod 210 will drive the exhaust port 213 to rotate around its rotation center point on the fixing frame 211. At the same time, the telescopic hose 212 at the bottom of the exhaust port 213 will extend and retract with the rotation of the exhaust port 213, thereby adjusting the air outlet angle of the exhaust port 213. When the device is not in use, the external air pipe stops supplying air, and there is no gas impacting the cover plate 216 inside the exhaust port 213. The spiral spring 215 resets and drives the cover plate 216 to rotate back to its original position, blocking the air outlet on the upper surface of the exhaust port 213 and preventing dust from adsorbing inside the exhaust port 213.

[0025] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is 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 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 utility model should be included within the protection scope of the present utility model.

Claims

1. A cleaning and cooling device for a blown film machine, comprising a body (1), characterized in that: An adjustable cooling mechanism (2) is provided on the surface of the body (1); The adjustable cooling mechanism (2) includes a fixed base (21), three sets of connecting valves (22) are fixedly connected to the bottom end of the outer wall of the fixed base (21), a bracket (23) is fixedly connected to the bottom end of the fixed base (21), a motor (24) is fixedly connected to the bottom end of the outer wall of the bracket (23), a threaded rod (25) is fixedly connected to the output shaft of the motor (24), a connecting plate (26) is threadedly connected to the surface of the threaded rod (25), and a connecting plate (26) is fixedly connected to the end of the connecting plate (26) away from the threaded rod (25). The sliding ring (27) has a guide rod (28) fixedly connected to the bottom end of the fixed seat (21). The outer arc surface of the fixed seat (21) is fixedly connected to multiple sets of external air outlets (29). The outer arc surface of the sliding ring (27) is hinged to a hinge rod (210). The top of the outer wall of the external air outlet (29) is fixedly connected to a fixed frame (211). The inner side of the fixed frame (211) is rotatably connected to an exhaust port (213). The bottom end of the outer wall of the exhaust port (213) is fixedly connected to a telescopic hose (212).

2. The cleaning and cooling device for a blown film machine according to claim 1, characterized in that: A protrusion (214) is fixedly connected to the top of the outer wall of the exhaust port (213), and a cover plate (216) is elastically connected to the outer side wall of the protrusion (214) through a spiral spring (215).

3. The cleaning and cooling device for a blown film machine according to claim 1, characterized in that: The fixed seat (21) is fixedly connected to the outer arc surface at the top of the body (1), and the threaded rod (25) is rotatably connected to the bottom end of the outer wall of the fixed seat (21).

4. The cleaning and cooling device for a blown film machine according to claim 1, characterized in that: The connecting plate (26) is provided with two sets, and the guide rod (28) passes through and is slidably connected to the inner side wall of the right connecting plate (26).

5. A cleaning and cooling device for a blown film machine according to claim 1, characterized in that: The sliding ring (27) is slidably connected to the outer surface of the external air outlet (29), and the end of the hinge rod (210) away from the sliding ring (27) is hinged to the outer sidewall of the exhaust port (213).

6. The cleaning and cooling device for a blown film machine according to claim 1, characterized in that: The bottom end of the outer wall of the telescopic hose (212) is fixedly connected to the upper surface of the external air outlet (29).

7. A cleaning and cooling device for a blown film machine according to claim 2, characterized in that: One end of the spiral spring (215) is fixedly connected to the rotation center axis of the cover plate (216), and the other end of the spiral spring (215) is fixedly connected to the outer sidewall of the protrusion (214).

8. A cleaning and cooling device for a blown film machine according to claim 2, characterized in that: The cover plate (216) is rotatably connected to the outer sidewall of the protrusion (214).

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