CN207758140U - Convection blown film cooling device - Google Patents
Convection blown film cooling device Download PDFInfo
- Publication number
- CN207758140U CN207758140U CN201721872017.1U CN201721872017U CN207758140U CN 207758140 U CN207758140 U CN 207758140U CN 201721872017 U CN201721872017 U CN 201721872017U CN 207758140 U CN207758140 U CN 207758140U
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- CN
- China
- Prior art keywords
- wind deflector
- air
- membrane tube
- lower air
- blown film
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The utility model discloses a kind of convection blown film cooling device, on blow molding machine head, include the multiple lower air conduits being arranged around blow molding machine head top discharge mouth and the wind deflector on the outside of multiple lower air conduits, the opening of lower air conduit is towards discharge port inside, and wind deflector is in inclined skewed outwardly from the bottom to top.There is provided cooling air provided with lower air conduit in this convection blown film cooling device, the opening of lower air conduit is towards on the inside of discharge port, and air can directly blow to membrane tube in membrane tube extrusion, compared to it is existing go out vane can there are more air to be in direct contact with membrane tube.The air of lower air conduit blowout takes away the heat of membrane tube after being contacted with membrane tube and climbs upwards, while the cooler air within the scope of wind deflector can decline, and cold air encounters the guiding of inclined wind deflector during decline, inwardly close to membrane tube and can continue to take away heat.The rising of hot-air and the decline of cold air form a convection circulation between membrane tube and wind deflector, improve cooling efficiency and reinforce cooling effect.
Description
Technical field
The utility model is related to film blow blowing technical field more particularly to a kind of convection blown film cooling devices.
Background technology
Film blow blowing is to use a kind of technique of the continuously shaped plastic film of extrusion molding, blow moulding equipment used in the technique
Include extruder 11, blow molding machine head 12, collapser 13, several carry-over pinch rolls 14 and wind-up roll 15 as shown in fig. 1.By resin plus
Into extruder 11, the resin melting under internal screw rod transmission, shearing and heat effect, fused materials are conveyed into blow molding machine head 12
In, and continuously squeezed out in annular membrane tube 2 in homogeneous thickness from the mould discharge door of circular ring shape by strainer, porous plate.2 quilt of membrane tube
Longitudinal drawing-off is clamped by traction frame top carry-over pinch rolls 14 after the gathering laminated of collapser 13, is finally wound onto wind-up roll 15.
The membrane tube blown out from head is molded by the fused materials of high temperature, and temperature is higher, therefore need to be cooled down to membrane tube
Cooling prevents the drawing-in motion of rear end from being damaged to accelerate its molding.The cooling way generally used at present is to be blow molded
One circle of setting goes out vane around discharge port on head, is cooled down from blow out air in vane is gone out.However, at present this goes out
That part that the air of vane blowout is only capable of just having left membrane tube bottom head carries out short time cooling, then will scatter
Cooling effect is lost, it is bad to the cooling effect of membrane tube.
To improve cooling efficiency and reinforcing cooling effect, it is necessary to provide a kind of new blown film cooling device.
Utility model content
The purpose of this utility model is to provide a kind of blown film coolings that can be improved cooling efficiency and reinforce cooling effect
Device.
To achieve the goals above, the utility model provides a kind of convection blown film cooling device, is set to blow molding machine head
On, include the multiple lower air conduits being arranged around the blow molding machine head top discharge mouth and the wind-guiding on the outside of multiple lower air conduits
Plate, the opening of the lower air conduit is towards discharge port inside, and the wind deflector is in inclined skewed outwardly from the bottom to top.
Due to providing cooling air provided with lower air conduit in the utility model convection blown film cooling device, lower air conduit
Opening is towards on the inside of discharge port, therefore air can directly blow to membrane tube in membrane tube extrusion, compared to it is existing go out vane
There can be more air to be in direct contact with membrane tube.The air of lower air conduit blowout takes away the heat of membrane tube and upward after being contacted with membrane tube
It climbs, simultaneously the cooler air within the scope of wind deflector can decline, and cold air encounters inclined wind deflector during decline
It is oriented to, inwardly close to membrane tube and can continue to take away heat.The decline of the rising of hot-air and cold air between membrane tube and wind deflector
A convection circulation is formd, cooling efficiency can be significantly improved and reinforces cooling effect.
Preferably, the wind deflector is loop configuration and the wind deflector is transparent.When wind deflector is around entire blowing
When head, the situation in blow-molding process is observed for convenience, wind deflector is set as transparent.
Preferably, the wind deflector be arcuate structure, the blow molding machine head be equipped with several wind deflectors, adjacent two
There is interval between the wind deflector.Interval is left between two wind deflectors, it is convenient that inner case is observed.
Preferably, the lower air conduit includes the first pipeline section being fixed on blow molding machine head and is articulated in first pipeline section
On the second pipeline section, the opening of second pipeline section is towards on the inside of the discharge port.By the way that the first pipeline section and the second pipeline section is arranged
The adjustment of lower air conduit air-out wind direction may be implemented in the structure of pivot joint.
Preferably, further including the upcast ventilation pipe positioned at the wind deflector upper end, the upcast ventilation pipe is vertically downwardly described
The medial surface of wind deflector.Setting upcast ventilation pipe can be such that more cold airs decline in face of wind deflector.
Specifically, multiple upcast ventilation pipes are arranged around the discharge port.
Description of the drawings
Fig. 1 is film blowing device schematic diagram.
Fig. 2 is the schematic diagram of the utility model convection blown film cooling device.
Specific implementation mode
Description is made to the preferred embodiment of the utility model with reference to the Figure of description provided.
As shown in Fig. 2, the utility model provides a kind of convection blown film cooling device, it is set on blow molding machine head 12,
Effect is cooled down to the membrane tube 2 squeezed out by the discharge port of annular on blow molding machine head 12.
Convection blown film cooling device includes multiple lower air conduits 4, and multiple lower air conduits 4 are arranged around above-mentioned discharge port.Under
Air hose 4 includes the first pipeline section 41 being fixed on blow molding machine head 12 and the second pipeline section being articulated on first pipeline section 41
42, the first pipeline section 41 and the second pipeline section 42 are hollow structures, and the two is formed by axis pin and is pivotally connected and will be carried out in junction close
Envelope is located at the opening on the second pipeline section 42 towards discharge port inside, therefore the blowout of lower air conduit 4 during membrane tube 2 squeezes out
Air being capable of direct opposite membrane tube 2.Since the second pipeline section 42 is articulated on the first pipeline section 41, the angle of the second pipeline section 42
It can be adjusted as needed, make its opening towards the relatively low or higher position in membrane tube 2.
Convection blown film cooling device further includes the wind deflector 5 for being set to the outside of lower air conduit 4, and wind deflector 5 is in the present embodiment
Arc corresponding with discharge port, and wind deflector 5 is in inclined skewed outwardly from the bottom to top.Wind deflector 5 has several, such as
It is four in the present embodiment, four wind deflectors 5 are arranged around discharge port, and interval is equipped between adjacent two wind deflectors 5, so as to
Operator observes inside processing situation.Wind deflector 5 can certainly be straight panel, but the shape of straight panel is not corresponding with membrane tube 2, therefore
Effect is good not as good as arc panel.Wind deflector can be made to the annular around the whole circle of discharge port in another embodiment, at this
In order to see inner case in the case of kind, wind deflector 5 is made using glass or transparent plastic, it is made to be transparent.
During membrane tube 2 squeezes out, the directly opposite membrane tube 2 of air blown out from lower air conduit 4, air is contacted with membrane tube 2
After take away its heat and as hot-air and close to membrane tube 2 rise.It is influenced by this ascending air, wind deflector 5 and 2 institute of membrane tube
The lower air of upper temp can decline automatically in the range of surrounding, the air of decline by the guiding of inclined wind deflector 5 and
It is biased inwardly towards membrane tube 2, cold air continues to take away heat and rise after contacting with membrane tube 2.The hot-air of rising and the cold sky of decline
Gas forms the convection current constantly recycled between wind deflector 5 and membrane tube 2, can rapidly take away the heat of membrane tube 2, improves cooling
Efficiency, and the convection current relatively it is existing go out vane act on the region bigger in membrane tube 2, cooling effect is more preferable.
Preferably, convection blown film cooling device further includes the upcast ventilation pipe 6 set on 5 upper end of wind deflector, upcast ventilation pipe 6 also has more
It is a and also around discharge port be arranged.The vertically downwardly medial surface of the wind deflector 5 of upcast ventilation pipe 6, blows out from upcast ventilation pipe 6
Cold air can further increase above-mentioned convection current.Blowing mechanism 12 is generally positioned in inside a guiding traction frame, therefore windward
Pipe 6 can be fixed in traction frame.
Above disclosed is only the preferred embodiments of the utility model, and effect is to facilitate those skilled in the art
Understand and implement according to this, the interest field of the utility model cannot be limited with this certainly, therefore special according to the present utility model application
Equivalent variations made by sharp range still fall within the range that the utility model is covered.
Claims (6)
1. a kind of convection blown film cooling device is set on blow molding machine head, it is characterised in that：Including surrounding on the blow molding machine head
The opening direction of the multiple lower air conduits and the wind deflector on the outside of multiple lower air conduits of discharge port setting, the lower air conduit goes out
On the inside of material mouth, the wind deflector is in inclined skewed outwardly from the bottom to top.
2. convection blown film cooling device as described in claim 1, it is characterised in that：The wind deflector is loop configuration and institute
Wind deflector is stated to be transparent.
3. convection blown film cooling device as described in claim 1, it is characterised in that：The wind deflector is arcuate structure, institute
It states blow molding machine head and is equipped with several wind deflectors, there is interval between adjacent two wind deflectors.
4. convection blown film cooling device as described in claim 1, it is characterised in that：The lower air conduit includes being fixed on blowing
The first pipeline section on head and the second pipeline section being articulated on first pipeline section, the opening of second pipeline section is described in
On the inside of discharge port.
5. convection blown film cooling device as described in claim 1, it is characterised in that：Further include being located at the wind deflector upper end
Upcast ventilation pipe, the upcast ventilation pipe vertically downwardly medial surface of the wind deflector.
6. convection blown film cooling device as claimed in claim 5, it is characterised in that：Multiple upcast ventilation pipes go out described in
Material mouth is arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721872017.1U CN207758140U (en) | 2017-12-26 | 2017-12-26 | Convection blown film cooling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721872017.1U CN207758140U (en) | 2017-12-26 | 2017-12-26 | Convection blown film cooling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207758140U true CN207758140U (en) | 2018-08-24 |
Family
ID=63185243
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721872017.1U Active CN207758140U (en) | 2017-12-26 | 2017-12-26 | Convection blown film cooling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207758140U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108162372A (en) * | 2017-12-26 | 2018-06-15 | 东莞市正新包装制品有限公司 | Convection blown film cooling device |
| KR102636967B1 (en) * | 2023-02-03 | 2024-02-16 | 주식회사 아주 | Film manufacturing device using blown extrusion |
-
2017
- 2017-12-26 CN CN201721872017.1U patent/CN207758140U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108162372A (en) * | 2017-12-26 | 2018-06-15 | 东莞市正新包装制品有限公司 | Convection blown film cooling device |
| KR102636967B1 (en) * | 2023-02-03 | 2024-02-16 | 주식회사 아주 | Film manufacturing device using blown extrusion |
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