PE film blowing machine for plastic product production

Abstract

The utility model discloses a PE (Poly Ethylene) film blowing machine for producing plastic products, which relates to the technical field of film blowing and comprises a film blowing machine body, a die orifice of the film blowing machine body blows out film bubbles upwards, and an outer cooling system surrounding the film bubbles is erected on the periphery of the film bubbles. The outer cooling system comprises an atomization cooling pipeline and an air cooling pipeline, the atomization cooling pipeline comprises a spiral water pipe with one open end and one closed end and atomization nozzles arranged on the spiral water pipe at intervals, the spiral water pipe is communicated with the atomization nozzles, and the air cooling pipeline comprises an air supply pipe section, an upper air distribution pipe section, a lower air distribution pipe section and an air nozzle. According to the utility model, the external cooling system is additionally arranged, combines air cooling and spray evaporation heat absorption, is uniformly distributed outside the film bubble by a circle, cools high-temperature air inside and outside the film bubble, reduces the temperature difference inside and outside the film bubble rising outside the film blowing machine, improves the cooling effect, accelerates the shaping of the film, and improves the high transparency uniformity of the film.

Description

Technical Field

[0001] This utility model relates to the field of blown film technology, specifically a PE blown film machine for the production of plastic products. Background Technology

[0002] The top-traction blown film machine is a plastic film processing device. It heats and melts plastic particles, then cools the indoor air to 10-15°C using a cold air fan. A high-pressure centrifugal fan sends the low-temperature air into the inner and outer air rings of the blown film machine to cool the film bubble that has just been blown out of the die. However, when the film bubble rises outside the blown film machine, the indoor air temperature is high, and the temperature around the outside of the film rises rapidly, resulting in a large temperature difference between the inside and outside of the film bubble, which affects the cooling and shaping quality of the film. In order to meet customers' requirements for high transparency and uniformity of the film, we have made design improvements and proposed a PE blown film machine for plastic product manufacturing. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a PE blown film machine for the production of plastic products. It solves the problem that when the film bubble rises outside the blown film machine, the indoor air temperature is high and the temperature difference between the inside and outside of the film bubble is large, which affects the cooling and shaping quality of the film and fails to meet the customer's demand for high transparency and uniformity of the film.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a PE blown film machine for producing plastic products, comprising a blown film machine body, wherein a film bubble is blown upward from the die opening of the blown film machine body, and an external cooling system is arranged around the film bubble, the external cooling system comprising an atomizing cooling pipe and an air-cooling pipe, the atomizing cooling pipe comprising a spiral water pipe with one end open and the other end closed and atomizing nozzles spaced along the spiral water pipe, the spiral water pipe being connected to the atomizing nozzles, and the spiral water pipe extending along the film... The bubble is arranged vertically around the membrane bubble. The spiral water pipe sprays water evenly around the membrane bubble through atomizing nozzles. The air-cooled pipeline includes an air supply pipe section, an upper air distribution pipe section, a lower air distribution pipe section, and air nozzles. The upper and lower air distribution pipe sections are both annular and are arranged one above the other around the membrane bubble. The air inlet of the upper and lower air distribution pipe sections is connected to the air supply pipe section. Multiple sets of air nozzles are evenly distributed around the membrane bubble on the upper and lower air distribution pipe sections.

[0005] Preferably, the spiral water pipe is disposed between the upper air distribution pipe section and the lower air distribution pipe section.

[0006] Preferably, the nozzle blows air along a direction parallel to the outer wall of the membrane bubble.

[0007] Preferably, the spray direction of the atomizing nozzle is set perpendicular to the direction of the film bubble.

[0008] Preferably, both the atomizing cooling pipeline and the air-cooling pipeline are made of stainless steel.

[0009] Preferably, the atomizing cooling pipe and the air-cooling pipe are fixed by a bracket.

[0010] This utility model has the following beneficial effects:

[0011] This invention utilizes an external cooling system that combines air cooling and spray evaporation heat absorption. The external cooling system is evenly distributed around the outside of the film bubble, cooling the high-temperature air inside and outside the film bubble. This reduces the temperature difference between the inside and outside of the film bubble as it rises outside the blown film machine, improving the cooling effect, accelerating the film's setting, and enhancing the film's high transparency and uniformity. Attached Figure Description

[0012] Figure 1 This is a front view of the present utility model;

[0013] Figure 2 This is a perspective view of the location of the external cooling system of this utility model;

[0014] Figure 3 This is a top view of the location of the external cooling system of this utility model;

[0015] Figure 4 This is a top view of the location of the atomizing cooling pipeline of this utility model;

[0016] Figure 5 This is a top view of the location of the air-cooled pipeline of this utility model.

[0017] In the diagram: 1. Film blowing machine body; 2. Film bubble; 3. External cooling system; 31. Atomizing cooling pipeline; 311. Spiral water pipe; 312. Atomizing nozzle; 32. Air cooling pipeline; 321. Air supply duct section; 322. Upper air distribution duct section; 323. Lower air distribution duct section; 324. Air nozzle; 4. Support frame. 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] like Figure 1-5As shown, this utility model provides a technical solution: a PE blown film machine for producing plastic products, including a blown film machine body 1, a film bubble 2 blown upward from the die opening of the blown film machine body 1, an external cooling system 3 surrounding the film bubble 2, the external cooling system 3 including an atomizing cooling pipe 31 and an air cooling pipe 32, both of which are stainless steel pipes, and the atomizing cooling pipe 31 and the air cooling pipe 32 are fixed by a bracket 4;

[0020] The atomizing cooling pipeline 31 includes a spiral water pipe 311 with one end open and the other end closed, and atomizing nozzles 312 spaced on the spiral water pipe 311. The liquid inlet end of the spiral water pipe 311 is connected to the pumping water circuit connected to the water tank. The water temperature in the water tank can be adjusted as needed, so low temperature water can be introduced into the spiral water pipe 311. The spiral water pipe 311 is connected to the atomizing nozzles 312. The spiral water pipe 311 is arranged around the membrane bubble 2 along the vertical axis of the membrane bubble 2. The spiral water pipe 311 sprays evenly around the membrane bubble 2 through the atomizing nozzles 312. The spraying direction of the atomizing nozzles 312 is set perpendicular to the direction of the membrane bubble 2. The atomizing nozzles 312 spray out fine mist, which can save water and is also conducive to rapid evaporation. In the environment where the air cooling pipeline 32 drives the air circulation, it does not condense into droplets.

[0021] The air-cooled duct 32 includes an air supply duct section 321, an upper air distribution duct section 322, a lower air distribution duct section 323, and air nozzles 324. Both the upper air distribution duct section 322 and the lower air distribution duct section 323 are annular, and are arranged one above the other around the membrane bubble 2. A spiral water pipe 311 is arranged between the upper air distribution duct section 322 and the lower air distribution duct section 323 to facilitate faster air circulation in the atomization zone, thereby promoting rapid evaporation and heat dissipation. The air inlets of both the upper air distribution duct section 322 and the lower air distribution duct section 323 are connected to the air supply duct section 321. The air supply duct section 321 is connected to a fan and is supplied with air by the fan. Multiple sets of air nozzles 324 are evenly distributed around the membrane bubble 2 on the upper air distribution duct section 322 and the lower air distribution duct section 323, and the air nozzles 324 blow air in a direction parallel to the outer wall of the membrane bubble 2.

[0022] 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.

[0023] 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 PE blown film machine for producing plastic products, comprising a blown film machine body (1), wherein a film bubble (2) is blown out from the die opening of the blown film machine body (1) with the die opening facing upwards, characterized in that: An external cooling system (3) is installed around the membrane bubble (2). The external cooling system (3) includes an atomizing cooling pipe (31) and an air-cooling pipe (32). The atomizing cooling pipe (31) includes a spiral water pipe (311) with one end open and the other end closed, and atomizing nozzles (312) spaced on the spiral water pipe (311). The spiral water pipe (311) is connected to the atomizing nozzles (312). The spiral water pipe (311) is arranged around the membrane bubble (2) along the vertical axis. The spiral water pipe (311) sprays a uniform mist around the membrane bubble (2) through the atomizing nozzles (312). The air-cooled duct (32) includes an air supply duct section (321), an upper air distribution duct section (322), a lower air distribution duct section (323), and air nozzles (324). The upper air distribution duct section (322) and the lower air distribution duct section (323) are both annular. The upper air distribution duct section (322) and the lower air distribution duct section (323) are arranged one above the other around the membrane bubble (2). The air inlet ends of the upper air distribution duct section (322) and the lower air distribution duct section (323) are connected to the air supply duct section (321). Multiple sets of air nozzles (324) are evenly distributed around the membrane bubble (2) on the upper air distribution duct section (322) and the lower air distribution duct section (323) to discharge air.

2. The PE blown film machine for producing plastic products according to claim 1, characterized in that: The spiral water pipe (311) is located between the upper air distribution pipe section (322) and the lower air distribution pipe section (323).

3. The PE blown film machine for producing plastic products according to claim 1, characterized in that: The nozzle (324) blows air along the direction parallel to the outer wall of the membrane bubble (2).

4. The PE blown film machine for producing plastic products according to claim 1, characterized in that: The spray direction of the atomizing nozzle (312) is set along the direction perpendicular to the membrane bubble (2).

5. A PE blown film machine for producing plastic products according to claim 1, characterized in that: Both the atomizing cooling pipe (31) and the air-cooling pipe (32) are stainless steel pipes.

6. A PE blown film machine for producing plastic products according to claim 1, characterized in that: The atomizing cooling pipe (31) and the air-cooling pipe (32) are fixed by the bracket (4).

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