CN103407141B - Multi-layer coextrusion sheet machine - Google Patents
Multi-layer coextrusion sheet machine Download PDFInfo
- Publication number
- CN103407141B CN103407141B CN201310357863.XA CN201310357863A CN103407141B CN 103407141 B CN103407141 B CN 103407141B CN 201310357863 A CN201310357863 A CN 201310357863A CN 103407141 B CN103407141 B CN 103407141B
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- extruding
- layer coextrusion
- sections
- machine
- air inlet
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/50—Details of extruders
- B29C48/505—Screws
- B29C48/67—Screws having incorporated mixing devices not provided for in groups B29C48/52 - B29C48/66
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/50—Details of extruders
- B29C48/505—Screws
- B29C48/565—Screws having projections other than the thread, e.g. pins
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
The invention relates to a multi-layer coextrusion sheet machine. The multi-layer coextrusion sheet machine comprises an extruding machine, an extrusion die head, a sheeting machine, a cooling bead cutter, a hauling mechanism and a rewinding device, wherein the extruding machine comprises multiple extrusion screws and material extruding barrels sleeved outside the extrusion screws, and the extrusion screws comprise feeding sections, fusion sections, plasticization sections and extruding sections; the fusion sections and the extruding sections are respectively provided with spiral edges, each spiral edge arranged on the extruding sections is composed of multiple lugs which are arranged according to the shapes of threads, and a gap is arranged between the adjacent lugs. The spiral edges of the extruding sections in the multi-layer coextrusion sheet machine are discontinuous types, the fixed passageway in the prior art is changed into a changeable net-shaped passageway, pressure angles of material melts on the extruding sections are changed along with the rotation of the extrusion screws, and the material melts are mixed for many times in a shunting manner; the material melts are fully mixed, the quality of a forming sheet is improved, and the multi-layer coextrusion sheet machine is suitable for sheet formation of different plastics at present and is applicable to the sheet formation of degradable materials.
Description
Technical field
The present invention relates to a kind of thermoforming machine, particularly relate to a kind of Multi-layer coextrusion sheet machine.
Background technology
Multi-layer coextrusion sheet machine generally comprises frame, and is successively set on extruder, extrusion die, tablet press machine, cooling bead cutter, haulage gear and the wrap-up in frame, the packing cylinder that extruder comprises many extrusion screw rods and is enclosed within outside extrusion screw rod.
Above-mentioned extrusion screw rod generally comprises feed zone, melt zone, fluxing zone and extruding zone four parts, wherein melt zone and extruding zone are respectively arranged with spiral shell rib, because the spiral shell rib on extruding zone is non-individual body, fixing runner is formed between spiral shell rib and spiral shell rib, therefore, material melt is extruded by stationary flowpath at extruding zone, and mixing is abundant not, affects the quality of formed sheet.
Along with the development of science and technology, degradation material is because of environmental protection, health and become main flow gradually, but due to the design feature of above-mentioned extrusion screw rod and the macromolecular structure difference of various material, material melt mixed is abundant not, its accommodation is narrower, cannot be applied to the sheet forming of degradation material.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of Multi-layer coextrusion sheet machine, and this Multi-layer coextrusion sheet machine can improve the quality of formed sheet, and is applicable to the sheet forming of degradation material.The technical scheme adopted is as follows:
A kind of Multi-layer coextrusion sheet machine, comprise frame, and the extruder, extrusion die, tablet press machine, cooling bead cutter, haulage gear and the wrap-up that are successively set in frame, the packing cylinder that extruder comprises many extrusion screw rods and is enclosed within outside extrusion screw rod, extrusion screw rod comprises feed zone, melt zone, fluxing zone and extruding zone, melt zone and extruding zone are respectively arranged with spiral shell rib, it is characterized in that: each the spiral shell rib on described extruding zone forms by the shaped formation of multiple projection according to screw thread, between adjacent two projections, have gap.
Above-mentioned feed zone makes material carry out preheating, compacting and conveying, makes material be that liquid is got ready from solid conversion reposefully; Melt zone makes the further compacting of material and plasticizing, and make material be liquid condition from solid conversion equably, this section is solid and liquid and the section of depositing; Fluxing zone makes material plastify further and homogenising; Extruding zone realizes material dosing, level pressure, extrudes from extrusion die constant temperature.
Owing to the spiral shell rib on extruding zone being set to discontinuous in Multi-layer coextrusion sheet machine, (spiral shell rib is formed by the shaped formation of multiple projection according to screw thread, gap is had) between adjacent two projections, thus stationary flowpath of the prior art is improved to changeable netted runner, along with the rotation of extrusion screw rod, material melt constantly changes at the pressure angle of extruding zone, material melt is made repeatedly to shunt mixing, thus make material melt mixed more abundant, improve the quality of formed sheet, be not only applicable to the sheet forming of current various plastics, and the sheet forming of degradation material can be applied to, the processing of multiple material can be adapted to, solve the product expansion demand of user.
As preferred version of the present invention, the gap between described adjacent two projections is greater than the length of projection.Be set in gap comparatively large, make the easier lateral flow of material melt, make the shunting mixing of material melt easier, material melt mixed is more abundant, improves the quality of formed sheet further.
As the further preferred version of the present invention, described extruder also comprises heater, and heater comprises multiple heating collar, heat source case, air inlet pipe, escape pipe and multiplely adds hot air ring; Heat source case is provided with air outlet and return air inlet; Add the hot air ring outside that be arranged on described packing cylinder alternate with heating collar; Add hot air ring and be provided with air inlet and air outlet; Air outlet is connected with air inlet by air inlet pipe, and return air inlet is connected with air outlet by escape pipe.Heat source case sends hot gas by air outlet, and be sent to through air inlet pipe and add in hot air ring, heat packing cylinder, the gas after heating is sent back in heat source case reheat through air outlet, escape pipe, return air inlet.Due to employing heating collar alternate on packing cylinder with add hot air ring and heat, namely be that Discrete control is adopted to the heating of packing cylinder, wherein add the mode that hot air ring adopts hot gas heating, make being heated of packing cylinder more even, plastics in packing cylinder are heated more even, improve the quality of formed sheet; Due to the gas temperature that still tool is higher after heating, again send back in heat source case and heat, hot gas cycle utilizes, and significantly reduces energy loss, therefore energy-conserving and environment-protective more, can energy-conservation 30 ~ 40%, and reduce production cost, economic benefit is obvious.
As the further preferred version of the present invention, also comprise die head heat abstractor, die head heat abstractor comprises aspirator, blast pipe, top are provided with opening cover body, elevating mechanism; The lower end of blast pipe is connected with the opening of cover body; Aspirator is arranged on the top of blast pipe; Elevating mechanism is arranged in described frame, and aspirator is arranged on the clutch end of elevating mechanism; Above the pressure roller that cover body is in described tablet press machine and near described extrusion die.When starting aspirator, by blast pipe and cover body, the hot water vapor to tablet press machine and extrusion die place is aspirated, hot water vapor is discharged by the upper end of blast pipe, preventing hot water vapor to be condensed into the globule accumulates on frame, extrusion die, avoid the globule and affect the shaping of extrusion die, what avoid the globule is dropped on formed sheet, therefore improves the quality of formed sheet.And by the adjustment of elevating mechanism, the height of cover body can be regulated, make to keep suitable distance between cover body lower end and the pressure roller of tablet press machine.Aspirator generally adopts air exhauster.
As further preferred embodiments of the present invention, described elevating mechanism comprises motor and worm and gear lifter, and the output shaft of motor is connected with the worm-drive of worm and gear lifter, and described aspirator is arranged on the worm screw of worm and gear lifter.Elevating mechanism is set to comprise motor and worm and gear lifter, can regulates according to the compression roller heights of tablet press machine at any time, the distance making the pressure roller of cover body lower end and tablet press machine remain suitable, guarantee the good suction effect of hot water vapor.
As further preferred embodiments of the present invention, the longitudinal section of described cover body is trapezoidal, and the cross-sectional area of cover body increases from top to bottom gradually.The bottom of cover body is set to wider, has both increased suction area, make again suction have more uniformity.
Accompanying drawing explanation
Fig. 1 is the structural representation of the preferred embodiment for the present invention;
Fig. 2 is the structural representation of extrusion screw rod;
Fig. 3 is the structural representation of heater;
Fig. 4 is the structural representation of die head heat abstractor.
Detailed description of the invention
Be described further below in conjunction with accompanying drawing and the preferred embodiment of the present invention.
As shown in Figure 1, 2, 3, this Multi-layer coextrusion sheet machine, comprises frame 1, and is successively set on extruder 2 in frame 1, extrusion die 3, tablet press machine 4, cooling bead cutter 5, haulage gear 6 and wrap-up 7.Extruder 2 comprises many extrusion screw rods 201, be enclosed within packing cylinder 202, heater 203 outside extrusion screw rod 201; Extrusion screw rod 201 comprises feed zone 2011, melt zone 2012, fluxing zone 2013 and extruding zone 2014, and melt zone 2013 and extruding zone 2014 are respectively arranged with spiral shell rib 2015; Each spiral shell rib 2015 on extruding zone 2014 forms according to the shaped formation of screw thread by multiple projection 2016, has gap 2017 between adjacent two projections 2016, and the gap 2017 between adjacent two projections 2016 is greater than the length of projection 2016; Heater 203 comprises multiple heating collar 2031, heat source case 2032, air inlet pipe 2033, escape pipe 2034 and multiplely adds hot air ring 2035; Heat source case 2032 is provided with air outlet 2036 and return air inlet 2037; Add hot air ring 2035 outside that be arranged on packing cylinder 202 alternate with heating collar 2031; Add hot air ring 2035 and be provided with air inlet 2039 and air outlet 20310; Air outlet 2036 is connected with air inlet 2039 by air inlet pipe 2033, and return air inlet 2037 is connected with air outlet 20310 by escape pipe 2034.
Owing to the spiral shell rib 2015 on extruding zone 2014 being set to discontinuous in Multi-layer coextrusion sheet machine, (spiral shell rib 2015 is formed according to the shaped formation of screw thread by multiple projection 2016, gap 2017 is had) between adjacent two projections 2016, thus stationary flowpath of the prior art is improved to changeable netted runner, along with the rotation of extrusion screw rod 201, material melt constantly changes at the pressure angle of extruding zone 2014, material melt is made repeatedly to shunt mixing, thus make material melt mixed more abundant, improve the quality of formed sheet, be not only applicable to the sheet forming of current various plastics, and the sheet forming of degradation material can be applied to.
Wherein, the heat source case 2032 of heater 203 sends hot gas by air outlet 2036, be sent to add in hot air ring 2035 through air inlet pipe 2033, air inlet 2039, heat packing cylinder 202, the gas after heating is sent back in heat source case 2032 reheat through air outlet 20310, escape pipe 2034, return air inlet 2037.Due to alternate employing heating collar 2031 and add hot air ring 2035 and heat on packing cylinder 202, namely be that Discrete control is adopted to the heating of packing cylinder 202, wherein add the mode that hot air ring 2035 adopts hot gas to heat, make being heated of packing cylinder 202 more even, plastics in packing cylinder 202 are heated more even, improve the quality of formed sheet; Due to the gas temperature that still tool is higher after heating, again send back in heat source case 2032 and heat, hot gas cycle utilizes, and significantly reduces energy loss, therefore energy-conserving and environment-protective more, can energy-conservation 30 ~ 40%, and reduce production cost, economic benefit is obvious.
As shown in Figure 1 and Figure 4, this Multi-layer coextrusion sheet machine, also comprise die head heat abstractor 8, die head heat abstractor comprises air exhauster 801, blast pipe 802, top are provided with opening 803 cover body 804, elevating mechanism 805, the longitudinal section of cover body 804 is trapezoidal, and the cross-sectional area of cover body 804 increases from top to bottom gradually; The lower end of blast pipe 802 is connected with the opening 803 of cover body 804; Air exhauster 801 is arranged on the top of blast pipe 802; Elevating mechanism 805 is arranged in frame 1, and air exhauster 801 is arranged on the clutch end of elevating mechanism 805; Above the pressure roller that cover body 804 is in tablet press machine 4 and near extrusion die 3.When starting air exhauster 801, aspirated by the hot water vapor at blast pipe 802 and cover body 804 pairs of tablet press machines 4 and extrusion die 3 place, hot water vapor is discharged by the upper end of blast pipe 2, preventing hot water vapor to be condensed into the globule accumulates on frame 1, extrusion die 3, avoid the globule and affect the shaping of extrusion die 3, what avoid the globule is dropped on formed sheet, therefore improves the quality of formed sheet.And pass through the adjustment of elevating mechanism 805, the height of cover body 804 can be regulated, make to keep suitable distance between the pressure roller of cover body 804 lower end and tablet press machine 4.
Elevating mechanism 805 comprises motor 80501 and worm and gear lifter 80502, and the output shaft of motor 80501 is connected with the worm-drive of worm and gear lifter 80502, and air exhauster 801 is arranged on the worm screw of worm and gear lifter 80502.
In addition; it should be noted that, the specific embodiment described in this description, its each several part title etc. can be different; all equivalences of doing according to structure, feature and the principle described in inventional idea of the present invention or simple change, be included in the protection domain of patent of the present invention.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment; only otherwise depart from structure of the present invention or surmount this scope as defined in the claims, protection scope of the present invention all should be belonged to.
Claims (5)
1. a Multi-layer coextrusion sheet machine, comprise frame, and the extruder, extrusion die, tablet press machine, cooling bead cutter, haulage gear and the wrap-up that are successively set in frame, the packing cylinder that extruder comprises many extrusion screw rods and is enclosed within outside extrusion screw rod, extrusion screw rod comprises feed zone, melt zone, homogenizing zone and extruding zone, melt zone and extruding zone are respectively arranged with spiral shell rib, it is characterized in that: described extruder also comprises heater, heater comprises multiple heating collar, heat source case, air inlet pipe, escape pipe and multiplely adds hot air ring; Heat source case is provided with air outlet and return air inlet; Add the hot air ring outside that be arranged on described packing cylinder alternate with heating collar; Add hot air ring and be provided with air inlet and air outlet; Air outlet is connected with air inlet by air inlet pipe, and return air inlet is connected with air outlet by escape pipe; Each spiral shell rib on described extruding zone forms by the shaped formation of multiple projection according to screw thread, has gap between adjacent two projections.
2. plant Multi-layer coextrusion sheet machine as claimed in claim 1, it is characterized in that: the gap between described adjacent two projections is greater than the length of projection.
3. plant Multi-layer coextrusion sheet machine as claimed in claim 1 or 2, it is characterized in that: also comprise die head heat abstractor, die head heat abstractor comprises aspirator, blast pipe, top are provided with opening cover body, elevating mechanism; The lower end of blast pipe is connected with the opening of cover body; Aspirator is arranged on the top of blast pipe; Elevating mechanism is arranged in described frame, and aspirator is arranged on the clutch end of elevating mechanism; Above the pressure roller that cover body is in described tablet press machine and near described extrusion die.
4. plant Multi-layer coextrusion sheet machine as claimed in claim 3, it is characterized in that: described elevating mechanism comprises motor and worm and gear lifter, the output shaft of motor is connected with the worm-drive of worm and gear lifter, and described aspirator is arranged on the worm screw of worm and gear lifter.
5. plant Multi-layer coextrusion sheet machine as claimed in claim 3, it is characterized in that: the longitudinal section of described cover body is trapezoidal, and the cross-sectional area of cover body increases from top to bottom gradually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310357863.XA CN103407141B (en) | 2013-08-16 | 2013-08-16 | Multi-layer coextrusion sheet machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310357863.XA CN103407141B (en) | 2013-08-16 | 2013-08-16 | Multi-layer coextrusion sheet machine |
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| Publication Number | Publication Date |
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| CN103407141A CN103407141A (en) | 2013-11-27 |
| CN103407141B true CN103407141B (en) | 2015-07-22 |
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| CN201310357863.XA Active CN103407141B (en) | 2013-08-16 | 2013-08-16 | Multi-layer coextrusion sheet machine |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104175614A (en) * | 2014-08-08 | 2014-12-03 | 宁波天启蜂窝材料有限公司 | Light hard double-layer honeycomb polypropylene hollow plate |
| CN104924575A (en) * | 2015-06-01 | 2015-09-23 | 安庆钰龙橡塑机械制造有限公司 | Silicone rubber high-voltage bus extrusion production system with screw machines |
| CN105599266A (en) * | 2015-12-25 | 2016-05-25 | 嘉兴市大塑机械有限公司 | Production device and method for polypropylene composited and modified extrusion sheet for trolley case |
| CN106827599A (en) * | 2017-03-24 | 2017-06-13 | 昆山科信橡塑机械有限公司 | A kind of straight inclined extrusion equipment of rubber mass |
| CN107150433A (en) * | 2017-05-15 | 2017-09-12 | 浙江豪升塑料科技有限公司 | The multilayer colored diaphragm of processing die head and case and bag of the multilayer colored diaphragm of case and bag |
| CN116872468B (en) * | 2023-06-06 | 2024-03-08 | 宜兴市鸿韵塑料有限公司 | Plastic extrusion equipment for processing plastic parts |
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| CN101450525A (en) * | 2007-12-07 | 2009-06-10 | 联塑(杭州)机械有限公司 | Material pipe heating method and device of plastic processing device |
| CN201483735U (en) * | 2009-06-17 | 2010-05-26 | 青岛福润德塑料挤出技术有限公司 | High-efficiency energy-saving molding machine |
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| CN2508944Y (en) * | 2001-11-22 | 2002-09-04 | 裴丹平 | Cylinder heat conducting oil heater of screw extruder |
| US7666338B2 (en) * | 2004-03-25 | 2010-02-23 | Ppg Industries Ohio, Inc. | Focused heat extrusion process for manufacturing powder coating compositions |
| CN202277988U (en) * | 2011-10-13 | 2012-06-20 | 浙江绍兴华东包装有限公司 | Lampblack exhaust device in film production |
| CN202702634U (en) * | 2012-05-14 | 2013-01-30 | 广东华菱机械有限公司 | Multi-layer coextrusion PET (polyethylene terephthalate) sheet production line |
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2013
- 2013-08-16 CN CN201310357863.XA patent/CN103407141B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2841314Y (en) * | 2005-09-26 | 2006-11-29 | 赵云强 | Novel power saving Wet-dry conduction oil plastics plasticizing extruder |
| CN101450525A (en) * | 2007-12-07 | 2009-06-10 | 联塑(杭州)机械有限公司 | Material pipe heating method and device of plastic processing device |
| CN201483735U (en) * | 2009-06-17 | 2010-05-26 | 青岛福润德塑料挤出技术有限公司 | High-efficiency energy-saving molding machine |
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| CN103407141A (en) | 2013-11-27 |
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