CN202623278U - Cooling bellows of plastic membrane production line transverse stretching preheating area - Google Patents
Cooling bellows of plastic membrane production line transverse stretching preheating area Download PDFInfo
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- CN202623278U CN202623278U CN 201220299039 CN201220299039U CN202623278U CN 202623278 U CN202623278 U CN 202623278U CN 201220299039 CN201220299039 CN 201220299039 CN 201220299039 U CN201220299039 U CN 201220299039U CN 202623278 U CN202623278 U CN 202623278U
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- bellows
- area
- stretching
- production line
- preheating area
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- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
Abstract
The utility model relates to a plastic membrane production line and provides a cooling bellows of a plastic membrane production line transverse stretching preheating area. The cooling bellows comprises a plurality of transverse bellows arranged in parallel in the upper portion and the lower portion of a preheating area and are characterized in that a section shape of an upper-lower terminal bellows located at an exit of the preheating area is formed by the fact that an air exhaust plate rear half plate is bent and tilted 15-30 degrees towards a membrane direction. The cooling bellows has the advantages that an exhaust flow formed after the terminal bellows is bent is provided with wind direction force towards the preheating area, so that an effect similar to the effect of an air curtain door is generated, and the wind direction force plays a role in stopping high temperature airflow moving ahead in the preheating area. The high temperature airflow moving ahead does not enter to a stretching area, so that temperature of the stretching area is reduced, temperature stability of the stretching area is improved, and stretching quality is guaranteed.
Description
Technical field:
The utility model relates to the plastic film production line, the cooling bellows of particularly a kind of plastic film production line cross directional stretch preheating zone.
Background technology:
Raw material on the plastic film production line after extruder is extruded, flow through measuring pump, cartridge filter.After cartridge filter filters out impurity, be transferred to die head moulding mold through carrier pipe.The moulding casting film sheet temperature of being extruded by die head is up to 250 ℃, gets into quenching, longitudinal stretching, cross directional stretch again and pulls into diaphragm.Cross directional stretch mechanism is made up of preheating zone, drawing zone, shaping area.The diaphragm temperature that is got into cross directional stretch mechanism preheating zone by longitudinal stretching mechanism shaping area is 180 ℃; Being introduced into cross directional stretch mechanism preheating zone lowers the temperature; Cooling is by the horizontal bellows of diaphragm upper and lower plurality of parallel the diaphragm upper and lower surfaces to be dried, and temperature is controlled at 165 ℃ in the exit, preheating zone to make diaphragm.Diaphragm is held the oblique operation in diaphragm two edges by diaphragm two avris clip after getting into drawing zone, and diaphragm is laterally widened while advancing, and back entering shaping area comes out in diaphragm since stretch district.
Diaphragm is the meeting heat release when stretching, and temperature is too high can to influence diaphragm quality.During stretching, require the control temperature at 155 ℃.Bellows two ends laterally arranged side by side up and down, preheating zone are fixed on the frame both sides, and bellows are communicated with blower fan through airduct, and the rectangular shape in bellows cross section is arranged the vent vertical with the air draft plate in length and breadth in the face of being uniformly distributed with several on the bellows air draft plate of diaphragm.Diaphragm in the preheating zone forward movement speed be 400-500 rice/minute, though air draft plate air draft air-flow is perpendicular to diaphragm, air-flow blow to behind the membrane surface can only to around diffusion.And diaphragm at a high speed forward translation will the air-flow band that blow on the diaphragm forward, form the high temperature gas flow that moves ahead.This high temperature gas flow that moves ahead is brought into drawing zone, has improved the diaphragm temperature of drawing zone, can the natural part cooling and be exposed in this space, district at the diaphragm of drawing zone, but diaphragm again can heat release when stretching.Therefore the high temperature gas flow that moves ahead is the major part to the diaphragm temperature effect of drawing zone, is again comparatively unsettled part.If can block this high temperature gas flow that moves ahead, then can make the drawing zone temperature relatively stable.
Summary of the invention:
The purpose of the utility model is to overcome above-mentioned defective, and the cooling bellows of a kind of plastic film production line cross directional stretch preheating zone are provided.
The scheme of the utility model is: comprise the preheating zone horizontal bellows of plurality of parallel up and down; It is characterized in that: its cross sectional shape of bellows of terminal up and down that is in the exit, preheating zone is the later half plate of air draft plate towards the diaphragm direction bending angle that tilts, and this angle is the 15-30 degree.
The advantage of the utility model is: the exhaust that forms after the bellows bending of terminal stream has the wind direction power in the preheating zone, thereby the effect that produces a similar air curtain door plays the preheating zone high temperature gas flow obstruction effect that moves ahead.The high temperature gas flow that moves ahead can not get into drawing zone, has reduced the drawing zone temperature, improves the drawing zone temperature stability, guarantees the stretching quality.
Description of drawings:
Fig. 1 is a transverse stretching machine structure plane figure sketch map.
Fig. 2 is the A-A cutaway view of Fig. 1, also is the utility model structural representation.
The specific embodiment:
The utility model structure: the horizontal bellows 4 that comprise preheating zone plurality of parallel about in the of 1; It is characterized in that: the bellows of terminal up and down 5 its cross sectional shapes that are in 1 exit, preheating zone are the later half plate of air draft plate towards the diaphragm 3 direction bendings angle that tilts, and this angle is the 15-30 degree.
The air curtain gate action that bellows air draft plate second half section bending in terminal produces moves ahead high temperature gas flow and is obstructed.High temperature gas flow can only be from the preheating zone 1 diaphragm 3 dual-side spaces or preheating zone inlet efflux, can not get into drawing zone 2, drawing zone 2 temperature are able to stablize.
Claims (1)
1. the cooling bellows of a plastic film production line cross directional stretch preheating zone; Comprise preheating zone (1) the horizontal bellows (4) of plurality of parallel up and down; It is characterized in that: its cross sectional shape of the bellows of terminal up and down (5) that is in exit, preheating zone (1) is the later half plate of air draft plate towards diaphragm (3) the direction bending angle that tilts, and this angle is the 15-30 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220299039 CN202623278U (en) | 2012-06-19 | 2012-06-19 | Cooling bellows of plastic membrane production line transverse stretching preheating area |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220299039 CN202623278U (en) | 2012-06-19 | 2012-06-19 | Cooling bellows of plastic membrane production line transverse stretching preheating area |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202623278U true CN202623278U (en) | 2012-12-26 |
Family
ID=47376517
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220299039 Expired - Lifetime CN202623278U (en) | 2012-06-19 | 2012-06-19 | Cooling bellows of plastic membrane production line transverse stretching preheating area |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202623278U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104690952A (en) * | 2015-03-16 | 2015-06-10 | 安徽国风塑业股份有限公司 | Transversely-pulling air bellow applied to biaxially oriented film production line |
| CN111448046A (en) * | 2017-12-15 | 2020-07-24 | 株式会社日本制钢所 | Film manufacturing apparatus |
-
2012
- 2012-06-19 CN CN 201220299039 patent/CN202623278U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104690952A (en) * | 2015-03-16 | 2015-06-10 | 安徽国风塑业股份有限公司 | Transversely-pulling air bellow applied to biaxially oriented film production line |
| CN111448046A (en) * | 2017-12-15 | 2020-07-24 | 株式会社日本制钢所 | Film manufacturing apparatus |
| CN111448046B (en) * | 2017-12-15 | 2022-05-06 | 株式会社日本制钢所 | Film manufacturing apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121226 |
|
| CX01 | Expiry of patent term |