CN201040421Y - Plastic thin film longitudinal tension transversely shrinkage-proof device - Google Patents
Plastic thin film longitudinal tension transversely shrinkage-proof device Download PDFInfo
- Publication number
- CN201040421Y CN201040421Y CNU2007200692633U CN200720069263U CN201040421Y CN 201040421 Y CN201040421 Y CN 201040421Y CN U2007200692633 U CNU2007200692633 U CN U2007200692633U CN 200720069263 U CN200720069263 U CN 200720069263U CN 201040421 Y CN201040421 Y CN 201040421Y
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- China
- Prior art keywords
- roller
- running roller
- laterally
- holder
- shrinkage
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- Expired - Fee Related
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Abstract
The utility model relates to a longitudinal-tensile and transverse-preventing-shrinkage device for plastic film, including a calendar (1), a leading fetch roller (2), an embossing roller (3) and a cooling roller (4). The utility model is characterized in that: the single body of each leading fetch wheel of the leading fetch roller (2) is provided with a group of transverse preventing shrinkage mechanism A; the transverse preventing shrinkage mechanism A includes a cylinder (5), a fixed base (6) and a pressing wheel (9); the cylinder (5) is arranged upon the fixed base (6), the bottom of the fixed base (6) is formed touching with the surface of the leading fetch roller through the rotary pressing wheel (9) crossing the fixed base.
Description
Technical field
The utility model relates to the plastic sheeting producing device, the laterally anti-constriction device of especially a kind of plastic sheeting longitudinal stretching; Belong to plastic sheeting and make the shaping mechanism class.
Background technology
In production of plastic film, normally used modular system is made up of calender and longitudinal stretching mechanism.Its drawing process process is: the plastic sheeting raw material is come out to enter to draw by calender 1 gets wheels 2, and forms the desired plastic sheeting of technology (seeing Fig. 1 relevant portion) by embossing roller 3 and cooling running roller 4.In this process, the linear velocity of calender running roller is 60M/MIN, is more than the 150M/MIN and draw the linear velocity of getting running roller, embossing roller, cooling running roller.The film thickness that is come out by calender is generally at 0.15mm, getting running roller and is longitudinally stretched to 0.075mm through drawing, and draw ratio reaches 1: 2.Owing to the intrinsic characteristic reason of this plastic material, be subjected to monolateral can the getting about running roller axial shrinkage 200mm of film after the tension force effect is stretched, thereby influence the uniformity of thin-film width direction and the width of finished product along drawing.Therefore, the film cross-direction shrinkage when preventing to stretch is the key point of dealing with problems.
The utility model content:
The purpose of the present utility model: aim to provide the laterally anti-constriction device of a kind of plastic sheeting longitudinal stretching, effectively prevent to produce behind the film longitudinal stretching problem of cross-direction shrinkage.
The laterally anti-constriction device of this plastic sheeting longitudinal stretching by calender 1, draw and get running roller 2, embossing roller 3 and cooling running roller 4 and forms, is characterized in that: described each of getting running roller 2 of drawing is drawn and is got the wheel monomer and be provided with one group and laterally prevent contracting mechanism A; Described being somebody's turn to do prevents that laterally contracting mechanism A comprise cylinder 5, holder 6 and pinch roller 9; Described cylinder 5 places the top of holder 6, and the below of holder is got the running roller face and touched formation with drawing through the rotatable pinch roller 9 that is through on the wheel pressing shaft 10 on the holder.
Described laterally anti-contracting mechanism A places each to draw the place, nearly two ends of getting running roller by per two one group.
Laterally prevent constriction device according to this plastic sheeting longitudinal stretching that above technical scheme proposes, since by draw at each get be provided with one group on the roller opinion can contracting mechanism by cylinder, holder and pinch roller etc., therefore not only kept the calendering stretching attenuate function of original longitudinal stretching mechanism, and effectively prevented what legacy equipment from existing: the edge that causes in the time of the stretching attenuate is drawn and is got rolling axle to shrinkage phenomenon.For the uniformity that guarantees film product transverse width direction and the desired width of finished product provide technical support.
Description of drawings
Accompanying drawing 1 is a structural representation of the present utility model;
Accompanying drawing 2 is practical state diagram of the present utility model.
Among the figure: 1-calender 2-draws and gets running roller 3-embossing roller 4-cooling running roller 5-cylinder 6-holder 7-wheel pressing shaft 8-packing ring 9-pinch roller 10-pinch roller pivot pin 11-circlip 12-plastic sheeting
The specific embodiment
The laterally anti-constriction device of this plastic sheeting longitudinal stretching as shown in the figure, it is to existing a kind of inventive improvements of normally used plastic sheeting modular system.The laterally anti-constriction device of this plastic sheeting longitudinal stretching by calender 1, draw and get running roller 2, embossing roller 3 and cooling running roller 4 and forms, is characterized in that: described each of getting running roller 2 of drawing is drawn and is got the wheel monomer and be provided with one group and laterally prevent contracting mechanism A; Described being somebody's turn to do prevents that laterally contracting mechanism A comprise cylinder 5, holder 6 and pinch roller 9; Described cylinder 5 places the top of holder 6, and the below of holder is got the running roller face and touched formation with drawing through the rotatable pinch roller 9 that is through on the wheel pressing shaft 10 on the holder.
Described laterally anti-contracting mechanism A places each to draw the place, nearly two ends of getting running roller by per two one group.
The actual laterally anti-contracting mechanism A circlip for shaft 11 (Fig. 1) that uses fuses, and pinch roller 9 can rotate around pin 10.Plastic sheeting 12 is through drawing when getting running roller 2 because of also not typing of high temperature, utilization is drawn the linear differential of getting between the running roller and is come longitudinal stretching plastic sheeting 12, this moment, cylinder 5 pushed away downwards, and pinch roller 9 is got running roller near until pushing down the plastic sheeting edge to drawing, and gets wheel shaft to contraction in case draw on the film edge.After the film both sides were pushed down, therefore the convergent force of film itself can't shrink less than the pressure of cylinder.Film just can not produce shrinkage phenomenon through the typing back.Therefore can guarantee final plastic film thickness uniformity, transverse width also can reach requirement.
In sum, get on the wheel thickness and the width that can control product after increasing laterally anti-constriction device drawing, reduced the quality that production cost has improved plastic sheeting.
Simultaneously, when producing, when the 0.1mm thickness thin film through drawing when getting wheel and being longitudinally stretched to width and being 0.05mm, the cross-direction shrinkage amount in 30mm, thickness deviation 0.01 ± mm, product reaches designing requirement.
Draw and get running roller 2 diameter ￠ 150-￠ 320mm, wheel face width 2200mm, pinch roller 9 diameter ￠ 80mm width 30mm sell 10 diameter ￠ 25mm, cylinder ￠ 32mm * 50mmst.Width 2000mm after film 12 stretches, cross-direction shrinkage 20mm, semi-finished product width 1980mm, finished width 1800mm adheres to specification.
Claims (2)
1. a plastic sheeting longitudinal stretching is laterally prevented constriction device, by calender (1), draw and get running roller (2), embossing roller (3) and cooling running roller (4) is formed, it is characterized in that: described each of getting running roller (2) of drawing is drawn and is got the wheel monomer and be provided with one group and laterally prevent contracting mechanism A; Described being somebody's turn to do prevents that laterally contracting mechanism A comprise cylinder (5), holder (6) and pinch roller (9); Described cylinder (5) places the top of holder (6), and the below of holder is got the running roller face and touched formation with drawing through the rotatable pinch roller (9) that is through on the wheel pressing shaft (10) on the holder.
2. the laterally anti-constriction device of a kind of plastic sheeting longitudinal stretching as claimed in claim 1 is characterized in that: described laterally anti-contracting mechanism A places each to draw the place, nearly two ends of getting running roller by per two one group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200692633U CN201040421Y (en) | 2007-04-24 | 2007-04-24 | Plastic thin film longitudinal tension transversely shrinkage-proof device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200692633U CN201040421Y (en) | 2007-04-24 | 2007-04-24 | Plastic thin film longitudinal tension transversely shrinkage-proof device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201040421Y true CN201040421Y (en) | 2008-03-26 |
Family
ID=39252130
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200692633U Expired - Fee Related CN201040421Y (en) | 2007-04-24 | 2007-04-24 | Plastic thin film longitudinal tension transversely shrinkage-proof device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201040421Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110962327A (en) * | 2019-11-14 | 2020-04-07 | 绍兴日月新材料有限公司 | High performance polyester film's drawing equipment |
-
2007
- 2007-04-24 CN CNU2007200692633U patent/CN201040421Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110962327A (en) * | 2019-11-14 | 2020-04-07 | 绍兴日月新材料有限公司 | High performance polyester film's drawing equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080326 Termination date: 20120424 |