CN101428473A - Apparatus and method for manufacturing plastic film - Google Patents
Apparatus and method for manufacturing plastic film Download PDFInfo
- Publication number
- CN101428473A CN101428473A CNA2008100440379A CN200810044037A CN101428473A CN 101428473 A CN101428473 A CN 101428473A CN A2008100440379 A CNA2008100440379 A CN A2008100440379A CN 200810044037 A CN200810044037 A CN 200810044037A CN 101428473 A CN101428473 A CN 101428473A
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- raw material
- control device
- plastic sheeting
- linear velocity
- traction rollers
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Abstract
The invention discloses a device for manufacturing plastic films, which comprises a control device, wherein, the speed, at which the raw material is conveyed from a feeding device to a film blowing device, is detected by the control device; a detector used for measuring the linear velocity of a roller is arranged on a traction roller; the detector sends the linear velocity information of the traction roller to the control device; and the control device controls the linear velocity of the traction roller. The manufacture device further provides a method for manufacturing plastic films, which is characterized in that the speed, at which the raw material is conveyed from the feeding device to the film blowing device is detected by the control device; the ideal linear velocity of the traction roller is calculated on the basis of the preset parameter value; and the control device detects the linear velocity of the traction roller, and then adjusts the linear velocity of the traction roller on the basis of the calculated ideal linear velocity. The invention which calculates and controls the linear velocity of the traction roller by gathering the raw material conveying speed of the feeding device can produce plastic films stably, thereby not only ensuring the reliable quality of the plastic films, but also avoiding the material waste.
Description
Technical field
The present invention relates to a kind of manufacturing installation of plastic sheeting.The invention still further relates to a kind of manufacture method of plastic sheeting.
Background technology
The manufacturing installation of existing plastic sheeting comprises feed arrangement and blown film device, and described feed arrangement comprises a hopper, to described blown film device transferring raw material.Described blown film device comprises main frame, reduction box, screw rod, die head, traction rollers, frame, electronic box, rolling frame etc., and described screw rod and die head are heated when work, to melt the plastic grain as raw material.
Plastic grain is by big hopper, extrude after the process screw rod is heated, by host driven, extruded the back by screw rod and by the die head air blowing plastics formed cylindrical film by plastics by reduction box for screw rod, cylindrical film is flattened by traction rollers and forms bilayer film, collects rolling by the rolling frame afterwards.The air pressure of die head is high more, and the body diameter of plastic sheeting is just big more, and the width of the plastic sheeting of making at last is just wide more; Otherwise the air pressure of die head is low more, and the body diameter of plastic sheeting is just more little, and the width of the plastic sheeting of making at last is just narrow more.The thickness of plastic sheeting is controlled by the rotating speed of traction rollers, and the rotating speed of traction rollers is high more, and promptly linear velocity is big more, and then the thickness of plastic sheeting is thin more; And the rotating speed of traction rollers is low more, and promptly linear velocity is more little, and then the thickness of plastic sheeting is thick more.An important parameter estimating plastic film thickness is exactly that Mick is heavy, promptly under the situation that width is determined, and the weight of every meter length plastic sheeting.When the thickness of plastic sheeting is thick more, then Mick is heavy just big more; When the thickness of plastic sheeting is thin more, then Mick is heavy just more little.
The manufacturing installation of existing plastic sheeting manually is provided with the rotating speed of traction rollers and the transporting velocity of raw material by the staff, produces plastic sheeting by manufacturing installation afterwards.But,, will influence the thickness of the plastic sheeting of production like this if the power supply instability of the manufacturing installation of plastic sheeting will cause the rotating speed of traction rollers and the transporting velocity of raw material to fluctuate.If the thickness of plastic sheeting is blocked up, can waste great deal of raw materials, improve production cost; If the thickness of plastic sheeting is thin excessively, can influence the intensity of plastic sheeting, reduce the quality of product.Now, in order addressing the above problem, can only to rely on the workman by rule of thumb equipment to be set, to sample in sample then and detect, and then equipment is revised, efficient is very low.
Summary of the invention
Technical problem to be solved by this invention provides a kind of manufacturing installation of plastic sheeting, and the manufacture method that adopts the plastic sheeting that this device realizes, production plastic sheeting that can be stable had both guaranteed the reliable in quality of plastic sheeting not waste raw material again.
For solving the problems of the technologies described above, the technical scheme of the manufacturing installation of plastic sheeting of the present invention is, comprise feed arrangement and blown film device, described feed arrangement is that described blown film device is supplied raw materials, described blown film device is pulled out the plastic sheeting of moulding by a traction rollers, also comprise control device, described control device detects the speed of described feed arrangement to blown film device transferring raw material, described traction rollers place is provided with the detector of measuring the roller linear velocity, described detector sends the linear velocity information of traction rollers to described control device, and described control device is controlled the linear velocity of described traction rollers.
The present invention also provides a kind of manufacture method that adopts the plastic sheeting of said apparatus realization, its technical scheme is, described control device detects the speed of described feed arrangement to blown film device transferring raw material, according to the preset parameters value, calculate the ideal line speed of described traction rollers, described control device detects the linear velocity of described traction rollers, adjusts the linear velocity of described traction rollers then according to the ideal line speed that calculates.
The present invention calculates by the speed of gathering the feed arrangement transferring raw material and the linear velocity of control traction rollers, and production plastic sheeting that can be stable had both guaranteed the reliable in quality of plastic sheeting not waste raw material again.
Description of drawings
The present invention is further detailed explanation below in conjunction with drawings and Examples:
Fig. 1 is the structural representation of the manufacturing installation of plastic sheeting of the present invention;
Fig. 2 is the structural representation of feed arrangement among the manufacturing installation embodiment of plastic sheeting of the present invention.
Reference numeral is among the figure, 1. feed arrangement; 2. reduction box; 3. screw rod; 4. die head; 5. frame; 6. traction rollers; 7. rolling frame; 8. control device; 9. linear velocity detector; 10. plastic sheeting; 11. big hopper; 12. valve; 13. cylinder; 14. little hopper; 15. small powder bucket output; 16. electronic scale.
The specific embodiment
The manufacturing installation of plastic sheeting of the present invention as shown in Figure 1, comprise feed arrangement 1 and blown film device, described blown film device comprises main frame, reduction box 2, screw rod 3, die head 4, frame 5, traction rollers 6, electronic box, rolling frame 7 etc., described screw rod 3 and die head 4 are heated when work, to melt the plastic grain as raw material.
Plastic grain is by feed arrangement 1, after being heated, extrudes process screw rod 3, screw rod 3 passes through reduction box 2 by host driven, plastics are extruded the back by screw rod 3 and by die head 4 air blowings plastics are formed cylindrical film 10, cylindrical film 10 is flattened by traction rollers 6 and forms bilayer film, collects rolling by rolling frame 7 afterwards.
In the present invention, also comprise control device 8, described control device 8 detects the speed of described feed arrangement 1 to blown film device transferring raw material, described traction rollers 6 places are provided with the detector 9 of measuring the roller linear velocity, described detector 9 sends the linear velocity information of traction rollers to described control device 8, the linear velocity of the described traction rollers 6 of described control device 8 controls.Described control device 8 can adopt the PLC controller.
As shown in Figure 2, described feed arrangement comprises small powder bucket 14 and electronic scale 16, the output 15 of described small powder bucket 14 is provided with a valve, the output of described small powder bucket 14 connects described blown film device, described electronic scale 16 is arranged at described small powder bucket 14 places, weight to the raw material in the small powder bucket 14 is carried out weighing, and described electronic scale 16 sends the weight information of raw material in the small powder bucket to described control device.
Described feed arrangement also comprises big hopper 11, and the output of described big hopper 11 is arranged at the top of described little hopper, and the output of described big hopper is provided with a valve 12.As shown in Figure 2, described valve 12 is driven by a cylinder 13, and this cylinder 13 can be controlled by control device.
Described traction rollers is by Motor Drive, and described control device is by the linear velocity of a described traction rollers of Frequency Converter Control.
The present invention also provides the manufacture method of the plastic sheeting that a kind of manufacturing installation that utilizes above-mentioned plastic sheeting realizes, described control device detects the speed of described feed arrangement to blown film device transferring raw material, according to the preset parameters value, calculate the ideal line speed of described traction rollers, described control device detects the linear velocity of described traction rollers, adjusts the linear velocity of described traction rollers then according to the ideal line speed that calculates.
The Mick that described preset parameters value is a plastic sheeting is heavy, the ideal line speed of described traction rollers=Mick weight/raw material transporting velocity.Wherein the ideal line speed unit of traction rollers is m/s, and the unit that Mick is heavy is g/m, and the unit of raw material transporting velocity is g/s.
Described control device is constantly gathered the weight information of raw material in the described small powder bucket by described electronic scale, obtains described raw material transporting velocity according to the change calculations of raw material weight information in the small powder bucket.In practical operation, because little hopper is a blown film device feed continuously always, therefore the fluctuation that the variable quantity of the weight of raw material can not stop in the small powder bucket, therefore the Mathematical treatment that can change gently the variable quantity of raw material weight in the small powder bucket is used for calculating the linear velocity of traction rollers afterwards.
The weight of raw material in the described small powder bucket of described electronic scale weighing, when raw material weight during less than predefined insufficient raw material threshold value, described control device is controlled the valve open of described big hopper, make described big hopper to small powder bucket transferring raw material, when the raw material weight in the described little hopper during greater than the sufficient threshold value of predefined raw material, described control device is controlled the valve closing of described big hopper.
In sum, the present invention calculates by the speed of gathering the feed arrangement transferring raw material and the linear velocity of control traction rollers, and production plastic sheeting that can be stable had both guaranteed the reliable in quality of plastic sheeting not waste raw material again.
Claims (8)
1. the manufacturing installation of a plastic sheeting, comprise feed arrangement and blown film device, described feed arrangement is that described blown film device is supplied raw materials, described blown film device is pulled out the plastic sheeting of moulding by a traction rollers, it is characterized in that, also comprise control device, described control device detects the speed of described feed arrangement to blown film device transferring raw material, described traction rollers place is provided with the detector of measuring the roller linear velocity, described detector sends the linear velocity information of traction rollers to described control device, and described control device is controlled the linear velocity of described traction rollers.
2. the manufacturing installation of plastic sheeting according to claim 1, it is characterized in that, described feed arrangement comprises little hopper and electronic scale, the output of described little hopper is provided with a valve, the output of described little hopper connects described blown film device, described electronic scale is arranged at described small powder bucket place, and the weight of the raw material in the little hopper is carried out weighing, and described electronic scale sends the weight information of raw material in the small powder bucket to described control device.
3. the manufacturing installation of plastic sheeting according to claim 1 is characterized in that, described feed arrangement also comprises big hopper, and the output of described big hopper is arranged at the top of described little hopper, and the output of described big hopper is provided with a valve.
4. the manufacturing installation of plastic sheeting according to claim 1 is characterized in that, described traction rollers is by Motor Drive, and described control device is by the linear velocity of a described traction rollers of Frequency Converter Control.
5. the manufacture method of the plastic sheeting realized of a manufacturing installation that utilizes any described plastic sheeting in the claim 1～4, it is characterized in that, described control device detects the speed of described feed arrangement to blown film device transferring raw material, according to the preset parameters value, calculate the ideal line speed of described traction rollers, described control device detects the linear velocity of described traction rollers, adjusts the linear velocity of described traction rollers then according to the ideal line speed that calculates.
6. the manufacture method of plastic sheeting according to claim 5 is characterized in that, the Mick that described preset parameters value is a plastic sheeting is heavy, the ideal line speed of described traction rollers=Mick weight/raw material transporting velocity.
7. the manufacture method of plastic sheeting according to claim 5, it is characterized in that, described control device is constantly gathered the weight information of raw material in the described small powder bucket by described electronic scale, obtains described raw material transporting velocity according to the change calculations of raw material weight information in the small powder bucket.
8. the manufacture method of plastic sheeting according to claim 5, it is characterized in that, the weight of raw material in the described small powder bucket of described electronic scale weighing, when raw material weight during less than predefined insufficient raw material threshold value, described control device is controlled the valve open of described big hopper, make described big hopper to small powder bucket transferring raw material, when the raw material weight in the described little hopper during greater than the sufficient threshold value of predefined raw material, described control device is controlled the valve closing of described big hopper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100440379A CN101428473A (en) | 2008-12-02 | 2008-12-02 | Apparatus and method for manufacturing plastic film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100440379A CN101428473A (en) | 2008-12-02 | 2008-12-02 | Apparatus and method for manufacturing plastic film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101428473A true CN101428473A (en) | 2009-05-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100440379A Pending CN101428473A (en) | 2008-12-02 | 2008-12-02 | Apparatus and method for manufacturing plastic film |
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| CN (1) | CN101428473A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108058436A (en) * | 2017-12-21 | 2018-05-22 | 苏州星火丰盈环保包装有限公司 | A kind of complete biodegradable refuse bag blown film device |
| CN108748964A (en) * | 2018-06-30 | 2018-11-06 | 浙江邦泰机械有限公司 | High-precision coextrusion film blowing machine |
| CN109693836A (en) * | 2018-12-10 | 2019-04-30 | 东莞市煜中五金机械设备有限公司 | A kind of plastic film sealing device |
-
2008
- 2008-12-02 CN CNA2008100440379A patent/CN101428473A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108058436A (en) * | 2017-12-21 | 2018-05-22 | 苏州星火丰盈环保包装有限公司 | A kind of complete biodegradable refuse bag blown film device |
| CN108748964A (en) * | 2018-06-30 | 2018-11-06 | 浙江邦泰机械有限公司 | High-precision coextrusion film blowing machine |
| CN109693836A (en) * | 2018-12-10 | 2019-04-30 | 东莞市煜中五金机械设备有限公司 | A kind of plastic film sealing device |
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Open date: 20090513 |