CN204183891U - The cooling vane of film blowing device - Google Patents
The cooling vane of film blowing device Download PDFInfo
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- CN204183891U CN204183891U CN201420620504.9U CN201420620504U CN204183891U CN 204183891 U CN204183891 U CN 204183891U CN 201420620504 U CN201420620504 U CN 201420620504U CN 204183891 U CN204183891 U CN 204183891U
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- annular
- cooling vane
- deep bead
- vane
- cooling
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Abstract
A kind of cooling vane of film blowing device, comprise cooling vane and lower cooling vane, wherein go up the top that cooling vane is positioned at lower cooling vane, two cooling vanes are equipped with opening direction annular air outlet upward, annular horizontal deep bead is provided with in the below of upper cooling vane, the vertical gap of the spaced apart 10-20CM of described annular horizontal deep bead and upper cooling vane, the outer annular edge of annular horizontal deep bead is along being connected with vertical annular wall plate, and annular wall plate is enclosed in described vertical gap periphery and makes vertical gap be formed as the wind centralizing cavity of annular; The internal diameter of annular horizontal deep bead is greater than the internal diameter on edge at the bottom of cooling vane, annular wall plate also offers multiple exhaust vent, the circumference of each exhaust vent annularly wallboard is evenly arranged, each exhaust vent correspondence is connected with an aspiration channel, each aspiration channel is connected to total exhaust column, and total exhaust column is connected to air exhauster.The cooling blast that the utility model can avoid lower cooling vane upwards to blow out is upset film bubble and is run.
Description
Technical field
The utility model belongs to the technical field of film blowing device, particularly relates to a kind of cooling vane of film blowing device.
Background technology
Traditional film blowing device is provided with upper and lower two cooling vanes, namely goes up cooling vane and lower cooling vane, wherein goes up the top that cooling vane is positioned at lower cooling vane, and two cooling vanes are equipped with opening direction annular air outlet upward.
In process of production, plastics melt is formed film bubble by inflation after head flows out, film bubble is constantly upwards run, cooling vane constantly blows out high velocity air upwards in the process, high velocity air plays cooling and shaping effect to the film bubble constantly risen, and meanwhile, these high velocity airs also can traction ambient air, formed " underbalance effect ", thus contribute to the inflation of film bubble.
Shown in Fig. 1, Fig. 2, in order to the air-flow stoping lower cooling vane 2 upwards to blow out enters upper cooling vane 1, existing film blowing device is glued with annular deep bead 4 bottom lower cooling vane 2.In order to ensure to hinder but effect, the internal diameter (as shown in AB in Fig. 2) of this annular deep bead 4 must be less than the internal diameter (as shown in CD in Fig. 2) on edge at the bottom of upper cooling vane, as shown in Figure 1 and Figure 2, following two problems can be produced like this: 1, because edge in annular deep bead 4 is leaned on very near with film bubble 8, therefore make film bubble 8 in uphill process, easily scratching along producing with the interior of annular deep bead 4, likely damaging film bubble 8 surface; 2, the inner corner trim place that edge and film bubble 8 are had a common boundary in annular deep bead, after air-flow upwards arrives this inner corner trim position, drain owing to dredging and can only return, at the existing air-flow flowing to film bubble in this inner corner trim position, there is again the air-flow returned, make the air turbulence (as shown in Fig. 1 straight arrows) of this inner corner trim position, and then the stable of film bubble 8 operation can be affected, thus affect bubble quality.
Utility model content
The cooling vane that the purpose of this utility model is to overcome above-mentioned shortcoming and provides a kind of film blowing device, the cooling blast that it can avoid lower cooling vane upwards to blow out is upset film bubble and is run.
Its object can realize by following scheme: the cooling vane of this film blowing device comprises upper cooling vane and lower cooling vane, wherein go up the top that cooling vane is positioned at lower cooling vane, two cooling vanes are equipped with opening direction annular air outlet upward, annular horizontal deep bead is provided with in the below of upper cooling vane, its main feature is, the vertical gap of the spaced apart 10-20CM of described annular horizontal deep bead and upper cooling vane, the outer annular edge of annular horizontal deep bead is along being connected with vertical annular wall plate, annular wall plate is enclosed in described vertical gap periphery and makes vertical gap be formed as the wind centralizing cavity of annular, the internal diameter of annular horizontal deep bead is greater than the internal diameter on edge at the bottom of cooling vane, annular wall plate also offers multiple exhaust vent, the circumference of each exhaust vent annularly wallboard is evenly arranged, each exhaust vent correspondence is connected with an aspiration channel, each aspiration channel is connected to total exhaust column, and total exhaust column is connected to air exhauster.
The utility model has the following advantages and effect:
During utility model works, film bubble constantly moves upward, run through lower cooling vane, upper cooling vane successively, internal diameter due to annular horizontal deep bead is greater than the internal diameter of upper cooling vane, therefore spaced apart one section of radial clearance of the inside edge of film bubble and annular horizontal deep bead, can avoid film bubble to scratch edge in deep bead; This radial clearance also becomes the air inlet of wind centralizing cavity simultaneously.In the course of work, air exhauster start, make wind centralizing cavity wind centralizing cavity air inlet produce negative pressure; Two cooling vanes upwards blow out cooling blast respectively by respective annular air outlet, when the cooling blast wherein descending cooling vane upwards to blow out rises near the interior edge of annular horizontal deep bead, because the air inlet of wind centralizing cavity has negative pressure, these air-flows can be sucked wind centralizing cavity by air inlet, and taken away by air exhauster through the exhaust vent of wind centralizing cavity, aspiration channel, total exhaust column, like this, make annular horizontal deep bead interior along neighbouring steady air current without any confusion, avoid the air turbulence near this position, avoid upsetting film and run and affect film forming quality.
2, the circumference of each exhaust vent annularly wallboard is evenly arranged, and therefore the negative pressure at each position of wind centralizing cavity is more even in the circumferential.
Accompanying drawing explanation
Fig. 1 is the structure and the working state schematic representation that descend cooling vane traditionally.
Fig. 2 is the structural representation of upper cooling vane in Fig. 1.
Fig. 3 is vertical cross section structure and the working state schematic representation of a kind of specific embodiment of the utility model.
Fig. 4 is partial schematic diagram in Fig. 3.
Fig. 5 is E-E cross-sectional view in Fig. 4.
Detailed description of the invention
Fig. 3, Fig. 4, shown in Fig. 5, the cooling vane of this film blowing device comprises cooling vane 1 and lower cooling vane 2, wherein go up the top that cooling vane position 1 is positioned at lower cooling vane 2, upper cooling vane 1 is provided with opening direction upper annular air outlet 11 upward, lower cooling vane 2 is provided with opening direction lower annular air outlet 21 upward, annular horizontal deep bead 4 is provided with in the below of upper cooling vane 1, the vertical gap of the spaced apart 15CM of annular horizontal deep bead 4 and upper cooling vane 1, the outer annular edge of annular horizontal deep bead 4 is along being connected with vertical annular wall plate 5, annular wall plate 5 is enclosed in described vertical gap periphery and makes vertical gap be formed as the wind centralizing cavity 6 of annular, the internal diameter (as shown in AB in Fig. 4) of annular horizontal deep bead 4 was greater than the internal diameter on edge, upper cooling vane 1 end as shown in CD in Fig. 4), annular wall plate 5 also offers four exhaust vents 51, and the circumference of each exhaust vent 51 annularly wallboard 5 is evenly arranged, and each exhaust vent 51 correspondence is connected with an aspiration channel 52, and each aspiration channel 52 is connected to total exhaust column 7, and total exhaust column 7 is connected to air exhauster.
Shown in Fig. 3, Fig. 4, Fig. 5, during utility model works, film bubble 8 constantly moves upward, run through lower cooling vane 1, upper cooling vane 2 successively, internal diameter due to annular horizontal deep bead 4 is greater than the internal diameter of upper cooling vane, therefore film bubble 8 and spaced apart one section of radial clearance of the inside edge of annular horizontal deep bead, can avoid film bubble 8 to scratch edge in deep bead; Radial clearance between the inside edge of annular horizontal deep bead 4 and film bubble can become the air inlet 61 of wind centralizing cavity.In the course of work, air exhauster starts, make wind centralizing cavity 6 the air inlet 61 of wind centralizing cavity produce negative pressure, two cooling vane 1(2) respectively by respective annular air outlet 11(21) upwards blow out cooling blast, when the cooling blast wherein descending cooling vane 2 upwards to blow out rises near the interior edge of annular horizontal deep bead 4, because the air inlet 61 of wind centralizing cavity has negative pressure, these air-flows can be sucked wind centralizing cavity 6 by air inlet 61, and through the exhaust vent 51 of wind centralizing cavity 6, aspiration channel 52, total exhaust column 7 is taken away by air exhauster, like this, make annular horizontal deep bead 4 interior along neighbouring steady air current without any confusion, avoid the air turbulence near this position, avoid upsetting film 8 run and affect film forming quality.
In above-described embodiment, annular horizontal deep bead 4 can change 10 CM into the isolated vertical gap of upper cooling vane 1, or 20 CM.
Claims (1)
1. the cooling vane of a film blowing device, comprise cooling vane and lower cooling vane, wherein go up the top that cooling vane is positioned at lower cooling vane, two cooling vanes are equipped with opening direction annular air outlet upward, annular horizontal deep bead is provided with in the below of upper cooling vane, it is characterized in that: the vertical gap of the spaced apart 10-20CM of described annular horizontal deep bead and upper cooling vane, the outer annular edge of annular horizontal deep bead is along being connected with vertical annular wall plate, and annular wall plate is enclosed in described vertical gap periphery and makes vertical gap be formed as the wind centralizing cavity of annular; The internal diameter of annular horizontal deep bead is greater than the internal diameter on edge at the bottom of cooling vane, annular wall plate also offers multiple exhaust vent, the circumference of each exhaust vent annularly wallboard is evenly arranged, each exhaust vent correspondence is connected with an aspiration channel, each aspiration channel is connected to total exhaust column, and total exhaust column is connected to air exhauster.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420620504.9U CN204183891U (en) | 2014-10-25 | 2014-10-25 | The cooling vane of film blowing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420620504.9U CN204183891U (en) | 2014-10-25 | 2014-10-25 | The cooling vane of film blowing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204183891U true CN204183891U (en) | 2015-03-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420620504.9U Active CN204183891U (en) | 2014-10-25 | 2014-10-25 | The cooling vane of film blowing device |
Country Status (1)
| Country | Link |
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| CN (1) | CN204183891U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107053648A (en) * | 2017-05-26 | 2017-08-18 | 广东金明精机股份有限公司 | Upward type internal cooling structure for multilayer co-extrusion film blowing machine |
-
2014
- 2014-10-25 CN CN201420620504.9U patent/CN204183891U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107053648A (en) * | 2017-05-26 | 2017-08-18 | 广东金明精机股份有限公司 | Upward type internal cooling structure for multilayer co-extrusion film blowing machine |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |