CN207594318U - Plastic film blowing machine inner-cooling structure - Google Patents
Plastic film blowing machine inner-cooling structure Download PDFInfo
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- CN207594318U CN207594318U CN201721771018.7U CN201721771018U CN207594318U CN 207594318 U CN207594318 U CN 207594318U CN 201721771018 U CN201721771018 U CN 201721771018U CN 207594318 U CN207594318 U CN 207594318U
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Abstract
A kind of plastic film blowing machine inner-cooling structure including blown-film die, is equipped with vertical discharge pipe, the discharge pipe periphery below interior cold wind ring is equipped with blast pipe in blown-film die and interior cold wind ring center；Cold wind chamber in the upper end connection of air intake passage, the vertical discharge pipe periphery above interior cold wind ring are also arranged with the second annular wall, the upper sector-style chamber of circular ring shape are formed between the second annular wall and outlet air tube wall；The periphery of second annular wall is also arranged with third annular wall, and the descending airflow chamber of circular ring shape is formed between the second annular wall and third annular wall, and the top of descending airflow chamber is equipped with the horizontal baffle of circular ring shape, and the bottom of descending airflow chamber is equipped with the outlet air sealing of circular ring shape；Multiple air-permeating holes are equipped between the top of descending airflow chamber and upper sector-style chamber, multiple oblique air holes are equipped between interior cold wind chamber and upper sector-style chamber.The utility model can make the abundant mixing of each section temperature of the finally cooling air of each position implementation cooling to film bubble.
Description
Technical field
The utility model belongs to the technical field of plastic film blowing machine, and in particular to a kind of plastic film blowing machine inner-cooling structure.
Background technology
Plastic film may be used blowing and be produced.In process of production, plastics melt is from the annulus of blown-film die 7
Shape film bubble extrusion 71 squeezes out and forms film bubble 8 upwards, as shown in Figure 1, film bubble 8 is constantly moved upwards by traction, and positioned at film
The cooling body on 8 side of bubble then constantly blows out cooling air, plays cooling effect to film bubble, condenses film bubble.Cooling body point
For outer air-cooled structure and inner-cooling structure；Its China and foreign countries' air-cooled structure is located on the outside of film bubble, the cooling air-flow of centripetal direction is blown out, outside film bubble
Face is cooled down；Inner-cooling structure is then located on the inside of film bubble, from the cooling air-flow of round wind outlet blowout centrifugal direction, in film bubble
Face is cooled down.Interior cold airflow also plays the role of inflation to film bubble.
As shown in Figure 1, inner-cooling structure includes interior cold wind ring 1 and annular wind chamber 40, annular wind chamber 40 is located at interior cold wind ring 1
Top.Interior cold wind ring 1 is equipped with interior cold wind chamber 12, and interior cold wind chamber 12 is equipped with round wind outlet 11, and annular wind chamber 40 is then equipped with more
A outlet air sealing 401.During work, a part of cold air is guided to blow out from the round wind outlet 11 of interior cold wind ring, and another part is then
The outlet air sealing 401 being guided from annular wind chamber is blown out.
The path of the disengaging film bubble inner cavity of interior cold airflow is equipped with vertical outlet air as illustrated by the arrows in fig. 1, in interior 1 center of cold wind ring
Pipe 21,21 periphery of discharge pipe below interior cold wind ring are equipped with blast pipe 22,21 tube wall of 22 tube wall of blast pipe and discharge pipe
Between formed air intake passage 23, the segment dislocation air-out passage 24 of vertical discharge pipe 21；Air-flow flow path is then such as Fig. 1 arrows institute
Show.
Existing above structure has the following disadvantages：Since the air themperature that 21 the inside of discharge pipe is flowed is higher（Because this portion
Divide air heated by the film bubble of high temperature）, and 21 tube wall of discharge pipe is sleeved on inside 22 tube wall of blast pipe, and discharge pipe 21 is managed
Wall is extremely transcalent metal material, thus 21 tube wall temperature of discharge pipe is higher by much relative to 22 tube wall of blast pipe, and then is led
Cause problems with：Inside the cooling air of air intake passage, that a part of temperature close to 21 tube wall of discharge pipe is high（This part claims
For relatively warm air）, and that a part of temperature close to 22 tube wall of blast pipe is low（This part is known as cooler air）, i.e. cooling air
The temperature of each section is seriously uneven.And inside subsequent annular wind chamber 40, the cooling air type of flow is simple, overall flow
Trend is vertical ascent, and inside microscopic motion trend, must be that cooler air Relative vertical declines and relatively warm air is opposite
The microcosmic relative motion trend of vertical ascent, i.e. relatively warm air is always maintained at unanimously with overall flow trend, it is this simply and not
The type of flow of change is unfavorable for the abundant mixing of relatively warm air and cooler air, leads to finally each position implementation cooling to film bubble
Air themperature is uneven, affects the uniformity of blowfilm shaping quality.
Utility model content
A kind of plastic film blowing machine inner-cooling structure is provided the purpose of the utility model is to overcome disadvantages mentioned above, it can make most
The abundant mixing of each section temperature of cooling air that each position implementation cools down to film bubble eventually.
Its purpose can be realized by following scheme：The plastic film blowing machine inner-cooling structure includes blown-film die, and blown-film die is set
There is circular ring shape film bubble extrusion, be equipped with interior cold wind ring above blown-film die, interior cold wind is equipped with interior cold wind chamber, and interior cold wind chamber is equipped with
Round wind outlet is equipped with vertical discharge pipe, outside the discharge pipe below interior cold wind ring in blown-film die and interior cold wind ring center
It encloses equipped with blast pipe, air intake passage is formed between the air inlet tube wall and outlet air tube wall, the segment dislocation of vertical discharge pipe goes out
Wind channel；Cold wind chamber in the upper end connection of air intake passage,
It is mainly characterized by, and the vertical discharge pipe periphery above interior cold wind ring is also arranged with the second annular wall, and second
The upper sector-style chamber of circular ring shape is formed between annular wall and outlet air tube wall, the top of upper sector-style chamber is equipped with seal cover board；Second ring
The periphery of shape wall is also arranged with third annular wall, and the descending airflow of circular ring shape is formed between the second annular wall and third annular wall
Chamber, the top of descending airflow chamber are equipped with the horizontal baffle of circular ring shape, and the bottom of descending airflow chamber is equipped with the outlet air sealing of circular ring shape；Downlink
Between the top of wind chamber and upper sector-style chamber be equipped with multiple air-permeating holes, air-permeating hole be opened in the second annular wall and along second annular
Wall is arranged circumferentially, and the vertical position of air-permeating hole is located at the upper end of corresponding descending airflow chamber；The outer diameter of third annular wall lower end
Equal to the outer diameter of interior cold wind ring, upper sector-style chamber and descending airflow chamber are respectively positioned on above interior cold wind chamber, in interior cold wind chamber and upper sector-style chamber
Between be equipped with multiple oblique air holes, the direction of oblique air hole is by the inside inclined upward in outer lower side, each oblique air hole edge
Interior cold wind chamber is arranged circumferentially.
In the annular protruding rib that third angular wall surfaces are also formed with protruding inwardly, annular protruding rib and the second annular wall it is outer
Be formed as the wind-guiding gap of annular between surface.
The angle of inclination of oblique air hole is the ゜ of 40 ゜~50.
In present specification, in differentiation during lateral direction, using the side of close blown-film die central axis as inside, with
Side far from blown-film die central axis is outside.
The utility model has the following advantages and effect：
1st, the utility model can make the relatively warm air and the abundant mixing of cooler air inside cooling air-flow, make finally to blow to
The air themperature of film bubble is uniform, it is ensured that the uniformity of bubble quality.Concrete reason is as follows：（1）, in interior cold wind chamber and uplink
Oblique air hole between wind chamber, the direction of oblique air hole is by the inside inclined upward in outer lower side, the inclination angle of oblique air hole
It spends for the ゜ of 40 ゜~50, thus cooling air-flow direction is changed for the first time, can play the role of breaing up mixing for the first time to air-flow；
（2）, cooling air-flow before and after the air-permeating hole between by upper sector-style chamber and descending airflow chamber, air-flow traffic direction occurs 180 ° drastically
Change, can play the role of breaing up mixing for the second time to air-flow；（3）, in upper sector-style chamber, the overall flow trend of cooling air-flow
Must be that cooler air Relative vertical declines and relatively warm air Relative vertical for vertical ascent, and inside microscopic motion trend
Rise, i.e., the microscopic motion trend of relatively warm air is always maintained at unanimously with overall flow trend；And in descending airflow chamber, cool down gas
The overall flow trend of stream declines to be vertical, and inside microscopic motion trend, be still cooler air Relative vertical decline and
Relatively warm air Relative vertical rises, i.e. the microscopic motion trend of relatively warm air is opposite with overall flow trend；Therefore, relatively warm air
Microscopic motion trend it is sometimes identical with overall flow trend, it is sometimes opposite with overall flow trend；Vice versa, cooler air
Microscopic motion trend it is sometimes identical with overall flow trend, sometimes with overall flow trend on the contrary, this is conducive to relatively warm air
With the abundant mixing of cooler air；（4）, the annular protruding rib that in third angular wall surfaces is also formed with protruding inwardly, convex annular
Be formed as the wind-guiding gap of annular between the outer surface of rib and the second annular wall, it, can when cooling air-flow passes through the wind-guiding gap
To play compression to air-flow, cooling air-flow is passed through after the wind-guiding gap, loosens expansion once more, this process can also
Play the role of a degree of mixing.
Description of the drawings
Fig. 1 is a kind of cooling structure schematic diagram of conventional plastic inflation film manufacturing machine.
Fig. 2 is a kind of principle schematic diagram of specific embodiment of the utility model.
Fig. 3 is A close-up schematic views in Fig. 2.
Specific embodiment
Shown in Fig. 2, Fig. 3, which includes blown-film die 7, and blown-film die 7 is equipped with circular ring shape film bubble
Extrusion 71,7 top of blown-film die are equipped with interior cold wind ring 1, and interior cold wind ring 1 is equipped with interior cold wind chamber 12, and interior cold wind chamber 12 is equipped with ring
Shape air outlet 11 is equipped with vertical discharge pipe 21 in blown-film die 7 and 1 center of interior cold wind ring, the outlet air positioned at interior 1 lower section of cold wind ring
Pipe 21 is equipped with blast pipe 22, and air intake passage 23, vertical discharge pipe 21 are formed between 21 tube wall of 22 tube wall of blast pipe and discharge pipe
Segment dislocation air-out passage 24；Cold wind chamber 12 in the upper end connection of air intake passage 23.Vertical outlet air above interior cold wind ring 1
21 periphery of pipe is also arranged with the second annular wall 32, and the upper of circular ring shape is formed between 21 tube wall of the second annular wall 32 and vertical discharge pipe
Sector-style chamber 4, the top of upper sector-style chamber 4 are equipped with seal cover board 41；The periphery of second annular wall 32 is also arranged with third annular wall 33,
The descending airflow chamber 5 of circular ring shape is formed between second annular wall 32 and third annular wall 33, the top of descending airflow chamber 5 is equipped with annulus
The horizontal baffle 51 of shape, the bottom of descending airflow chamber 5 are equipped with the outlet air sealing 52 of circular ring shape；The top of descending airflow chamber 5 and upper sector-style
Multiple air-permeating holes 61 are equipped between chamber, air-permeating hole 61 is opened in the second annular wall 32 and equal along the circumferential direction of the second annular wall 32
Even arrangement, the vertical position of air-permeating hole 61 are located at the upper end of corresponding descending airflow chamber 5；The outer diameter of 33 lower end of third annular wall is equal to interior
The outer diameter of cold wind ring 1, upper sector-style chamber 4 and descending airflow chamber 5 are respectively positioned on interior 12 top of cold wind chamber, in interior cold wind chamber 12 and upper sector-style chamber
Multiple oblique air holes 62 are equipped between 4, the direction of oblique air hole 62 is each oblique ventilative by the inside inclined upward in outer lower side
Hole 62 is arranged circumferentially along interior cold wind chamber 12；The angle of inclination of each oblique air hole 62 is 45 ゜.In third annular wall 33
Surface is also formed with the annular protruding rib protruded inwardly 331, is formed as between the outer surface of 331 and second annular wall of annular protruding rib
The wind-guiding gap 332 of annular.
The course of work and principle of above-described embodiment are as follows：
During work, cooling air-flow enters interior cold wind chamber 12 from air intake passage 23, and then first part's cold air is guided from interior
The round wind outlet 11 of cold wind ring is blown out；Second part cold air then enters upper sector-style chamber 4 and to upstream by oblique air hole 62
It is dynamic, then enter descending airflow chamber 5 by air-permeating hole 61 and flow downward, by the wind-guiding gap 332 of annular, finally from descending airflow
The outlet air sealing 52 in bottom of chamber portion is blown out, and film bubble is implemented to cool down.Cooling air-flow flow path and direction are as shown in Figure 2 and Figure 3.
After above-mentioned first part and second part cold air implement cooling to film bubble, become hot gas, from the outlet air of discharge pipe 21
Channel 24 is drained downwards.
In above-described embodiment, the angle of inclination of oblique air hole is readily modified as 40 ゜ or 50 ゜.
Claims (3)
1. a kind of plastic film blowing machine inner-cooling structure, including blown-film die, blown-film die is equipped with circular ring shape film bubble extrusion, inflation film manufacturing machine
Head top is equipped with interior cold wind ring, and interior cold wind is equipped with interior cold wind chamber, and interior cold wind chamber is equipped with round wind outlet, in blown-film die and interior
Cold wind ring center is equipped with vertical discharge pipe, and the discharge pipe periphery below interior cold wind ring is equipped with blast pipe, the air inlet tube wall
Air intake passage, the segment dislocation air-out passage of vertical discharge pipe are formed between outlet air tube wall；The upper end connection of air intake passage
Interior cold wind chamber；It is characterized in that：Vertical discharge pipe periphery above interior cold wind ring is also arranged with the second annular wall, the second annular
The upper sector-style chamber of circular ring shape is formed between wall and outlet air tube wall, the top of upper sector-style chamber is equipped with seal cover board；Second annular wall
Periphery be also arranged with third annular wall, the descending airflow chamber of circular ring shape is formed between the second annular wall and third annular wall, under
The top of sector-style chamber is equipped with the horizontal baffle of circular ring shape, and the bottom of descending airflow chamber is equipped with the outlet air sealing of circular ring shape；Descending airflow chamber
Top and upper sector-style chamber between be equipped with multiple air-permeating holes, air-permeating hole is opened in the second annular wall and along the second annular wall
It is arranged circumferentially, the vertical position of air-permeating hole is located at the upper end of corresponding descending airflow chamber；The outer diameter of third annular wall lower end is equal to
The outer diameter of interior cold wind ring, upper sector-style chamber and descending airflow chamber are respectively positioned on above interior cold wind chamber, between interior cold wind chamber and upper sector-style chamber
Equipped with multiple oblique air holes, the direction of oblique air hole is by the inside inclined upward in outer lower side, and each oblique air hole is along interior cold
Wind chamber is arranged circumferentially.
2. plastic film blowing machine inner-cooling structure according to claim 1, it is characterised in that：It is also formed in third angular wall surfaces
There is the annular protruding rib protruded inwardly, be formed as the wind-guiding gap of annular between annular protruding rib and the outer surface of the second annular wall.
3. according to the plastic film blowing machine inner-cooling structure described in claims 1 or 2, it is characterised in that：The angle of inclination of oblique air hole
For the ゜ of 40 ゜~50.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721771018.7U CN207594318U (en) | 2017-12-18 | 2017-12-18 | Plastic film blowing machine inner-cooling structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721771018.7U CN207594318U (en) | 2017-12-18 | 2017-12-18 | Plastic film blowing machine inner-cooling structure |
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| Publication Number | Publication Date |
|---|---|
| CN207594318U true CN207594318U (en) | 2018-07-10 |
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ID=62766146
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721771018.7U Active CN207594318U (en) | 2017-12-18 | 2017-12-18 | Plastic film blowing machine inner-cooling structure |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111452322A (en) * | 2020-04-14 | 2020-07-28 | 武汉市新洲三角塑料制品有限公司 | Film blow molding machine |
| CN112026077A (en) * | 2020-08-27 | 2020-12-04 | 宋家发 | Solidification device and solidification method for preparing starch modified material |
| CN114044274A (en) * | 2021-11-22 | 2022-02-15 | 安徽皖山食品有限公司 | Rice storage is with fresh-keeping device |
-
2017
- 2017-12-18 CN CN201721771018.7U patent/CN207594318U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111452322A (en) * | 2020-04-14 | 2020-07-28 | 武汉市新洲三角塑料制品有限公司 | Film blow molding machine |
| CN112026077A (en) * | 2020-08-27 | 2020-12-04 | 宋家发 | Solidification device and solidification method for preparing starch modified material |
| CN114044274A (en) * | 2021-11-22 | 2022-02-15 | 安徽皖山食品有限公司 | Rice storage is with fresh-keeping device |
| CN114044274B (en) * | 2021-11-22 | 2022-11-25 | 安徽皖山食品有限公司 | Rice storage is with fresh-keeping device |
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