CN202137947U - A cooling device for a film blow molding machine - Google Patents

Abstract

The utility model relates to a cooling device technical field, concretely relates to film blowing machine's cooling device, it includes base, air-cooler and the annular die head that is fixed in the base, the outer wall of annular die head is equipped with outer wind ring, outer wind ring communicate in the air-cooler, the inner wall of annular die head is equipped with interior wind ring, interior wind ring communicate in the air-cooler, interior wind ring wears to be equipped with vertical exhaust pipe, the exhaust pipe intercommunication has the air extractor. The utility model discloses be provided with interior wind ring and outer wind ring and can carry out inside and outside cooling simultaneously to the membrane bubble to constantly remove through the hot-blast of exhaust pipe in with the membrane bubble, so that the inside temperature of membrane bubble remains stable, so the utility model discloses the cooling effect is good, can make membrane bubble thickness even, transparency good.

Description

A cooling device for a film blow molding machine

technical field

The utility model relates to the technical field of cooling devices, in particular to a cooling device for a film blow molding machine.

Background technique

The film blowing machine is a device that heats and melts plastic particles and then blows them into film bubbles. Therefore, the film bubbles need to go through a cooling and shaping process before winding. If the cooling of the film bubble is natural cooling at room temperature, due to the high room temperature (generally around 20°C) and certain fluctuations, the cooling of the film bubble at room temperature is actually neither complete nor uniform. In this way, the shrinkage coefficient of the film after winding far exceeds its theoretical value, resulting in serious uneven thickness of the film after the final shrinkage, which is the so-called NG (no good) product, so a special Cooling device for cooling the film bubble.

At present, the cooling device used for film bubbles mainly uses a cold fan to blow cold air into the outer air ring of the die head of the film blowing machine to externally cool the film bubbles. The disadvantages are poor cooling effect, uneven film thickness, and film transparency. Difference.

Contents of the invention

The purpose of the utility model is to provide a cooling device for a film blow molding machine in view of the deficiencies of the prior art, which can simultaneously cool the film bubble inside and outside, with good cooling effect, uniform thickness of the film bubble, and good transparency of the film bubble.

The utility model is realized by the following technologies:

A cooling device for a film blowing machine, comprising a base, a cooling fan, and an annular die fixed to the base, the outer wall of the annular die is provided with an outer air ring, and the outer air ring is connected to the cooling fan. The inner wall of the annular die head is provided with an inner air ring, the inner air ring is connected to the cooling fan, the inner air ring is pierced with a vertical exhaust pipe, and the exhaust pipe is connected with an air extractor.

Further, the cooling device of the film blowing machine further includes a refrigerator and a radiator, the refrigerator is connected to the radiator, and the radiator cooperates with the cooling fan.

Wherein, the air cooler is a variable frequency air cooler.

Wherein, the cooling fan includes an inner cooling fan and an outer cooling fan, the inner cooling fan is connected to the inner air ring, and the outer cooling fan is connected to the outer air ring.

Wherein, the number of the external cooling fan is 4, and the number of the internal cooling fan is 1.

Wherein, the annular die head is provided with an outer air ring ventilation cover, and the outer air ring ventilation cover is provided with evenly distributed ventilation holes. the

Wherein, the side wall of the inner air ring is provided with several uniformly distributed air outlet holes.

The beneficial effects of the utility model are: the cooling device of this kind of film blow molding machine includes a base, a cooling fan and an annular die fixed on the base, the outer wall of the annular die is provided with an outer air ring, and the outer air ring Connected to the air cooler, the inner wall of the annular die head is provided with an inner air ring, the inner air ring is connected to the air cooler, the inner air ring is pierced with a vertical exhaust pipe, the exhaust The air duct is connected with an air extractor. The utility model is equipped with an inner air ring and an outer air ring, which can simultaneously cool the film bubble inside and outside, and continuously discharge the hot air in the film bubble through the exhaust pipe, so as to keep the internal temperature of the film bubble stable, so the utility model The cooling effect is good, which can make the thickness of the film bubble uniform and the transparency good.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Among them, Figure 1 includes:

1 - base

2——air cooler

3——Ring die head

4——outer wind ring

5——inner air ring

6——exhaust pipe

7——air extractor

8—refrigerator

9 - Radiator

10——outer air ring ventilation cover

11——ventilation hole

12—air outlet.

Detailed ways

In order to facilitate the understanding of those skilled in the art, the utility model will be further described below in conjunction with the embodiments and accompanying drawings, and the content mentioned in the implementation mode is not to limit the utility model.

See Fig. 1, a kind of cooling device of film blow molding machine, comprise base 1, air cooler 2 and annular die head 3 fixed on base 1, the outer wall of annular die head 3 is provided with outer air ring 4, outer air ring 4 passes through The pipeline is connected to the air cooler 2, and the wind coming out from the outer air ring 4 can cool the outer wall of the film bubble. The wind from the inner air ring 5 can cool the inner wall of the film bubble. The inner air ring 5 is pierced with a vertical exhaust pipe 6, and the exhaust pipe 6 is connected with an air exhauster 7. Under the action of the air exhauster 7 , the exhaust pipe 6 can discharge the hot air in the bubble to form heat exchange, so that the gas in the bubble can reach an equilibrium state. In this embodiment, the inner air ring 5 and the outer air ring 4 are provided to cool the film bubble inside and outside at the same time, and the hot air in the film bubble is continuously discharged through the exhaust pipe 6, so as to keep the internal temperature of the film bubble stable, so In this embodiment, the cooling effect is good, and the thickness of the film bubble can be made uniform and the transparency is good.

The cooling device of the film blowing machine also includes a refrigerator 8 and a radiator 9, the refrigerator 8 is connected to the radiator 9, the radiator 9 is matched with the cooling fan 2, and the circulating water provided by the refrigerator 8 enters the radiator 9, The wind blown by the air cooler 2 can form cold air with a lower temperature after passing through the radiator 9, which can effectively cool the film bubble.

Among them, the cooling fan 2 is a variable frequency cooling fan, which saves electric energy and reduces energy consumption, and can perform stepless speed regulation, which is beneficial to effectively control the quality of the film bubble.

Wherein, the cooling fan 2 includes an inner cooling fan and an outer cooling fan, the inner cooling fan is connected to the inner air ring 5 , and the outer cooling fan is connected to the outer air ring 4 . The number of the outer cooling fan in this embodiment is 4 (only 1 is drawn in Fig. 1), each outer cooling fan is equipped with a refrigerator 8 and a radiator 9 respectively, the number of the inner cooling fan is 1, and the inner cooling fan is also A refrigerator 8 and a radiator 9 are separately configured, and of course an appropriate number of external cooling fans and internal cooling fans can be selected as required.

Wherein, the annular die head 3 is provided with an outer air ring ventilation cover 10, and the outer air ring ventilation cover 10 is provided with evenly distributed ventilation holes 11, so that the cold wind coming out of the outer air ring 4 passes through the ventilation holes 11 evenly, Uniform cooling of the bubble. the

Among them, the side wall of the inner air ring 5 is provided with a number of evenly distributed air outlet holes 12, which can make the film bubble evenly cooled and prevent the phenomenon of uneven cooling of the film bubble.

The above content is only a preferred embodiment of the present utility model. For those of ordinary skill in the art, according to the idea of the present utility model, there will be changes in the specific implementation and scope of application. The content of this specification should not be understood as Limitations on the Invention.

Claims (7)

1. the cooling device of a film blow molding machine; Comprise base, air-cooler and be fixed in the annular die head of base, the outer wall of said annular die head is provided with outer vane, and said outer vane is communicated in said air-cooler; It is characterized in that: the inwall of said annular die head is provided with interior vane; Vane is communicated in said air-cooler in said, and said interior vane is equipped with vertical exhaust duct, and said exhaust duct is communicated with air exhauster.

2. the cooling device of a kind of film blow molding machine according to claim 1, it is characterized in that: it also comprises refrigeration machine and radiator, and said refrigeration machine links to each other with said radiator, and said radiator and said air-cooler match.

3. the cooling device of a kind of film blow molding machine according to claim 1, it is characterized in that: said air-cooler is the frequency conversion air-cooler.

4. the cooling device of a kind of film blow molding machine according to claim 1 is characterized in that: air-cooler and outer air-cooler in said air-cooler comprises, said in air-cooler be communicated in said interior vane, said outer air-cooler is communicated in said outer vane.

5. the cooling device of a kind of film blow molding machine according to claim 4, it is characterized in that: the number of said outer air-cooler is 4, said in the number of air-cooler be 1.

6. the cooling device of a kind of film blow molding machine according to claim 1 is characterized in that: said annular die head is provided with the ventilative cover of outer vane, and ventilative cover of said outer vane offers equally distributed air-permeating hole.

7. the cooling device of a kind of film blow molding machine according to claim 1 is characterized in that: the sidewall of vane is provided with some equally distributed exhaust vents in said.

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