SU1502383A1 - Extrusion head for moulding multiple-layer articles from thermoplastic materials - Google Patents
Extrusion head for moulding multiple-layer articles from thermoplastic materials Download PDFInfo
- Publication number
- SU1502383A1 SU1502383A1 SU874290861A SU4290861A SU1502383A1 SU 1502383 A1 SU1502383 A1 SU 1502383A1 SU 874290861 A SU874290861 A SU 874290861A SU 4290861 A SU4290861 A SU 4290861A SU 1502383 A1 SU1502383 A1 SU 1502383A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- mandrel
- central axis
- eccentric bushing
- conical
- nut
- Prior art date
Links
- 238000001125 extrusion Methods 0.000 title claims abstract description 12
- 238000000465 moulding Methods 0.000 title claims description 4
- 239000002365 multiple layer Substances 0.000 title 1
- 239000012815 thermoplastic material Substances 0.000 title 1
- 230000007246 mechanism Effects 0.000 claims abstract description 7
- 229920000642 polymer Polymers 0.000 claims description 4
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 229920001169 thermoplastic Polymers 0.000 claims description 3
- 239000004416 thermosoftening plastic Substances 0.000 claims description 3
- 101100403763 Xenopus laevis nr2c1-a gene Proteins 0.000 claims 1
- 101100403764 Xenopus laevis nr2c1-b gene Proteins 0.000 claims 1
- 101100080404 Xenopus tropicalis nr2c1 gene Proteins 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 229920006254 polymer film Polymers 0.000 abstract description 2
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 229920003023 plastic Polymers 0.000 abstract 1
- 239000004033 plastic Substances 0.000 abstract 1
- 239000000155 melt Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 1
Classifications
-
- 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
- B29C48/30—Extrusion nozzles or dies
- B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
- B29C48/335—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles
- B29C48/337—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles the components merging at a common location
- B29C48/338—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles the components merging at a common location using a die with concentric parts, e.g. rings, cylinders
-
- 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
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
-
- 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
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
- B29C48/10—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels flexible, e.g. blown foils
-
- 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
- B29C48/14—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the particular extruding conditions, e.g. in a modified atmosphere or by using vibration
- B29C48/147—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the particular extruding conditions, e.g. in a modified atmosphere or by using vibration after the die nozzle
- B29C48/1472—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the particular extruding conditions, e.g. in a modified atmosphere or by using vibration after the die nozzle at the die nozzle exit zone
-
- 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
- B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
- B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
- B29C48/21—Articles comprising two or more components, e.g. co-extruded layers the components being layers the layers being joined at their surfaces
-
- 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
- B29C48/30—Extrusion nozzles or dies
- B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
-
- 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
- B29C48/30—Extrusion nozzles or dies
- B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
- B29C48/325—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles being adjustable, i.e. having adjustable exit sections
- B29C48/327—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles being adjustable, i.e. having adjustable exit sections with centering means
-
- 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
- B29C2791/00—Shaping characteristics in general
- B29C2791/004—Shaping under special conditions
- B29C2791/007—Using fluid under pressure
-
- 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
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/07—Flat, e.g. panels
- B29C48/08—Flat, e.g. panels flexible, e.g. films
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
Изобретение относитс к переработке пластмасс экструзией и может быть использовано дл производства многослойных полимерных пленок соэкструзией с раздувом пленочного рукава. Цель изобретени - повышение равномерности формовани внутреннего сло за счет обеспечени точности регулировани перемещений дорна. Дл этого экструзионна головка содержит корпус, промежуточный дорн и дорнодержатель с установленным на нем дорном и центральной осью. Устройство перемещени дорна выполнено в виде экстцентриковой втулки с коническим участком по наружной поверхности. Внутренн поверхность дорна выполнена конической дл взаимодействи с коническим участком эксцентриковой втулки. Механизм осевого перемещени эксцентриковой втулки выполнен в виде гайки, установленной на резьбовой части центральной оси дорнодержател . По наружной поверхности гайки выполнен кольцевой выступ дл захода в кольцевую проточку на эксцентриковой втулке. При работе экструзионной головки эксцентриковой втулке сообщают осевое перемещение посредством гайки. При этом конический участок наружной поверхности эксцентриковой втулки опускаетс вниз, взаимодейству с внутренней конической поверхностью дорна, что вызывает радиальное перемещение дорна, уменьша или увеличива формующий зазор. 1 з.п.ф-лы, 2 ил.The invention relates to the processing of plastics extrusion and can be used for the production of multilayer polymer films by co-extrusion of a film sleeve. The purpose of the invention is to improve the uniformity of the formation of the inner layer by ensuring accurate control of the movements of the mandrel. For this, the extrusion head comprises a housing, an intermediate mandrel and a holder with a mandrel mounted on it and a central axis. The device for moving the mandrel is made in the form of an eccentric sleeve with a conical section on the outer surface. The inner surface of the mandrel is conical to interact with the conical portion of the eccentric bushing. The axial movement mechanism of the eccentric bushing is made in the form of a nut mounted on the threaded part of the central axis of the dorogate. On the outer surface of the nut there is an annular protrusion for entry into the annular groove on the eccentric sleeve. When the extrusion head is operating, the eccentric bushing is reported to axially move by means of a nut. In this case, the conical portion of the outer surface of the eccentric bushing is lowered down, interacting with the inner conical surface of the mandrel, which causes the radial movement of the mandrel, reducing or increasing the forming gap. 1 hp ff, 2 ill.
Description
Изобретение относитс к области переработки полимерных материалов экструзией, в частности к производству многослойных полимерных пленок соэкструзией с раздувом пленочного рукава.The invention relates to the field of processing of polymeric materials by extrusion, in particular to the production of multilayer polymer films by co-extrusion of a blown film sleeve.
Цель изобретени - повышение равномерности формовани внутреннегоThe purpose of the invention is to improve the uniformity of the molding of the internal
1сло путем обеспечени точности регулировани перемещений дорна.1 by assuring accuracy in controlling the movements of the mandrel.
На фиг. 1 изображена головка, разрез; на фиг. 2 - вид А на фиг. 1.FIG. 1 shows a head, a section; in fig. 2 is a view A of FIG. one.
Экструзионна головка дл формовани многослойных изделий из термопластов содержит корпус 1, в котором размещен промежуточный дорн 2, дор- нодержатель 3 с каналом 4 дл подачиThe extrusion head for forming multilayer thermoplastic products comprises a housing 1 in which an intermediate mandrel 2 is placed, a mandrel holder 3 with a channel 4 for feeding
3150231502
полимера, дорн 5, установленный на дорнодержателе 3 с возможностью радиального перемещени . В корпусе 1 выполнен канал 6 дл подачи расплава в полость 7 (формование наружного сло ). Канал 4 сообщен с полостью 8 (формование внутреннего сло ). Дорн 5 крепитс к дорнодержателю 3 винтами 9. Размеры отверстий в дорне 5 под винты 9 позвол ют ему перемещатьс в радиальном направлении. Устройство перемещени дорна 5 выполнено в виде эксцентриковой втулки 10 с коническим участком на наружной поверхности polymer, mandrel 5, mounted on the backrest 3 with the possibility of radial movement. In the housing 1, a channel 6 is made for feeding the melt into the cavity 7 (forming the outer layer). Channel 4 is in communication with cavity 8 (forming the inner layer). The mandrel 5 is fastened to the carrier 3 with screws 9. The dimensions of the holes in the mandrel 5 under the screws 9 allow it to move in the radial direction. The movement of the mandrel 5 is made in the form of an eccentric sleeve 10 with a conical section on the outer surface
11,установленной на центральной оси 12 дорнодержател 3 и снабженной механизмами осевого и поворотного перемещени . Внутренн поверхность 13 дорна 5 вьтолнена конической дл вза- имодействи с коническим участком на наружной поверхности 11 эксцентриковой втулки 10. Механизм осевого перемещени эксцентриковой втулки 10 выполнен в виде гайки 14, установленной на резьбовой части 15 центральной оси11, mounted on the central axis 12 of the long arm 3 and provided with axial and pivotal movement mechanisms. The inner surface 13 of the mandrel 5 is made conical to interact with the conical section on the outer surface 11 of the eccentric bushing 10. The axial movement mechanism of the eccentric bushing 10 is made in the form of a nut 14 mounted on the threaded part 15 of the central axis
12.На центральной оси 12 выполнена цилиндрическа поверхность 16. По наружной поверхности гайки 14 выполнен кольцевой выступ 17 дл захода в кольцевую проточку 18, котора выполнена на эксцентриковой втулке 10. Поворотное перемещение эксцентриковой втулки 10 осуществл етс посредством механизма поворота в виде ключа 19.12.On the central axis 12 there is a cylindrical surface 16. On the outer surface of the nut 14 there is an annular protrusion 17 for entering the annular groove 18, which is made on the eccentric bushing 10. The rotary movement of the eccentric bushing 10 is performed by means of a turning mechanism 19.
На видимой стороне эксцентриковой втулки 10 находитс метка 20 (фиг.2) указывающа положение (направление) эксцентриситета, т.е. конического участка на наружной поверхности 11. On the visible side of the eccentric sleeve 10 there is a mark 20 (FIG. 2) indicating the position (direction) of the eccentricity, i.e. conical area on the outer surface 11.
На боковой поверхности эксцентриковой втулки 10 расположены скосы 21 и 22 под ключ 19 дл установки и удерживани эксцентриковой втулки 10 в рабочем положении. Между корпусом 1 и дорном 5 имеютс зазоры 23 и 24.On the side surface of the eccentric bushing 10 are slots 21 and 22 turnkey 19 for installing and holding the eccentric bushing 10 in the working position. Between housing 1 and mandrel 5 there are gaps 23 and 24.
На гайке 14 установлен поворотный диск 25 с круговой шкалой, тарированной в 0,01 мм перемещени дорна. Поворотный диск 25 имеет стопор 26 дл фиксации нулевого положени шка- Лы.On the nut 14 there is a rotary dial 25 with a dial, tared with a 0.01 mm displacement of the mandrel. The rotary disk 25 has a stopper 26 for fixing the zero position of the scale.
Экструзионна головка дл формовани многослойных изделий из термопластов работает следующим образом.An extrusion head for forming multi-layered articles from thermoplastics works as follows.
Расплав полимера, формующего внут рехний слой, из канала 4 поступает в полость 8, обтекает дорнодержатель 3, дорн 5 и соедин етс с потоком изThe melt of the polymer forming the inner layer from the channel 4 enters the cavity 8, flows around the holder 3, the mandrel 5 and connects with the flow from
5five
20 25 20 25
30 thirty
3535
4545
5555
полости 7, обтекающим промежуточный 1дорн 2. Центровка положени дорна 5 относительно промежуточного дорна 2 производитс устройством радиального перемещени дорна 5. Сначала провер етс концентричность формующего канала и определ етс положение наибольшей величины зазора 23 формующей щели . Эксцентрикова втулка 10 в исходном положении не касаетс внутренней конической поверхности 13 дорна 5.После определени положени наибольшей величины зазора 23 эксцентрикова втулка 10 посредством ключа 19 поворачиваетс в рабочее положение так, чтобы метка 20 совмещаетс с радиусом расположени зазора 23 и удерживаетс в этом положении от поворота. Перемещением гайки 14 по резьбовой части 15 центральной оси 12 эксцентриковой втулке 10 сообщаетс осевое перемещение по цилиндрической поверхности 16 за счет зацеплени кольцевого выступа 1 7 с кольцевой проточкой 18. При этом конический участок наружной поверхности 11 эксцентриковой втулки 10 опускаетс вниз, соприкасаетс с внутренней конической поверхностьюcavity 7 flowing around intermediate 1dorn 2. The centering of the position of the mandrel 5 relative to the intermediate mandrel 2 is performed by a device for radial displacement of the mandrel 5. First, the concentricity of the forming channel is checked and the position of the largest gap 23 of the forming gap is determined. The eccentric bushing 10 in the initial position does not touch the inner conical surface 13 of the mandrel 5. After determining the position of the largest gap 23, the eccentric bushing 10 is rotated to the working position by means of the key 19 so that the mark 20 is aligned with the radius of the gap 23 and is kept in this position from turning . Moving the nut 14 along the threaded part 15 of the central axis 12 to the eccentric bushing 10 communicates axial movement along the cylindrical surface 16 by engaging the annular protrusion 1 7 with the annular groove 18. At the same time, the conical portion of the outer surface 11 of the eccentric bushing 10 goes down and touches the inner conical surface
13дорна 5. В момент контакта конического участка на наружной поверхности 11 и внутренней конической поверхности 13 следует произвести остановку гайки 14, установить нуль круговой шкалы поворотного диска 25 против метки 20 эксцентриковой втулки13) 5. At the moment of contact of the conical area on the outer surface 11 and the inner conical surface 13, the nut 14 should be stopped, the zero dial of the turntable 25 should be set against the mark 20 of the eccentric bushing
10 и зафиксировать диск 25 на гайке10 and fix the disk 25 on the nut
14стопором 26.14 with a stop 26.
Последующим поворотом гайки 14 по резьбовой части 15 конический участок наружной поверхности 11 эксцентриковой втулки 10 скользит по конической поверхности 13 дорна 5, вызыва радиальное перемещение дорна 15 в сторону уменьшени зазора 23 и увеличени зазора 24.Subsequent rotation of the nut 14 along the threaded portion 15, the conical section of the outer surface 11 of the eccentric sleeve 10 slides along the conical surface 13 of the mandrel 5, causing the radial movement of the mandrel 15 to decrease the clearance 23 and increase the clearance 24.
Величина перемещени оцениваетс визуально по показани м круговой шкалы на поворотном диске 25 против метки 20.The amount of movement is estimated visually by the indications of the dial on the turntable 25 against the mark 20.
После этого проводитс проверка .концентричности внутреннего формующего канала на соответствие заданным значени м равномерности толщины полимерного сло .After this, the concentricity of the inner forming channel is checked for compliance with the specified values of the uniformity of the thickness of the polymer layer.
При несоответствии полученных значений равномерности толщины заданным величинам производитс последующее , передвижение дорна 5 перемещением гайкн 14 по резьбовой части 15 централь- нон оси 12 дорнодержател 3.If the obtained thickness uniformity values do not correspond to the given values, the subsequent movement of the mandrel 5 by moving the nut 14 along the threaded part 15 of the central axis 12 of the core holder 3.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU874290861A SU1502383A1 (en) | 1987-06-16 | 1987-06-16 | Extrusion head for moulding multiple-layer articles from thermoplastic materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU874290861A SU1502383A1 (en) | 1987-06-16 | 1987-06-16 | Extrusion head for moulding multiple-layer articles from thermoplastic materials |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU1502383A1 true SU1502383A1 (en) | 1989-08-23 |
Family
ID=21321964
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU874290861A SU1502383A1 (en) | 1987-06-16 | 1987-06-16 | Extrusion head for moulding multiple-layer articles from thermoplastic materials |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU1502383A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006018293A1 (en) * | 2004-08-19 | 2006-02-23 | Hosokawa Alpine Aktiengesellschaft | Blow head for producing blown tubular film |
| RU2681632C2 (en) * | 2014-03-14 | 2019-03-11 | Крауссмаффай Берсторфф Гмбх | Tube die head and method for manufacturing tube |
-
1987
- 1987-06-16 SU SU874290861A patent/SU1502383A1/en active
Non-Patent Citations (1)
| Title |
|---|
| Авторское свидетельство СССР № 1080993, кл. В 29 С 47/02, 1983. Патент DE 2250151, кл. В 29 D 9/00, опублик. 1975. * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006018293A1 (en) * | 2004-08-19 | 2006-02-23 | Hosokawa Alpine Aktiengesellschaft | Blow head for producing blown tubular film |
| RU2340454C1 (en) * | 2004-08-19 | 2008-12-10 | Хосокава Алпин Акциенгезелльшафт | Extrusion head for production of blow sleeve film |
| US7811073B2 (en) | 2004-08-19 | 2010-10-12 | Hosokawa Alpine Aktiengesellschaft | Blow head for producing blown tubular film |
| RU2681632C2 (en) * | 2014-03-14 | 2019-03-11 | Крауссмаффай Берсторфф Гмбх | Tube die head and method for manufacturing tube |
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