DE3233416A1 - Extruder for processing plastics materials - Google Patents
Extruder for processing plastics materialsInfo
- Publication number
- DE3233416A1 DE3233416A1 DE19823233416 DE3233416A DE3233416A1 DE 3233416 A1 DE3233416 A1 DE 3233416A1 DE 19823233416 DE19823233416 DE 19823233416 DE 3233416 A DE3233416 A DE 3233416A DE 3233416 A1 DE3233416 A1 DE 3233416A1
- Authority
- DE
- Germany
- Prior art keywords
- screw
- screw press
- press according
- feed
- mechanisms
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000463 material Substances 0.000 title claims abstract description 99
- 229920003023 plastic Polymers 0.000 title claims abstract description 29
- 239000004033 plastic Substances 0.000 title claims abstract description 29
- 230000007246 mechanism Effects 0.000 claims abstract description 27
- 239000002994 raw material Substances 0.000 claims abstract description 12
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 21
- 239000008187 granular material Substances 0.000 claims description 7
- 239000000945 filler Substances 0.000 claims description 6
- 238000007493 shaping process Methods 0.000 claims description 4
- 241000283153 Cetacea Species 0.000 claims 1
- 230000001105 regulatory effect Effects 0.000 description 5
- 239000000047 product Substances 0.000 description 4
- 238000005303 weighing Methods 0.000 description 4
- 239000000654 additive Substances 0.000 description 3
- 241000237858 Gastropoda Species 0.000 description 2
- 238000005204 segregation Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- FFGPTBGBLSHEPO-UHFFFAOYSA-N carbamazepine Chemical compound C1=CC2=CC=CC=C2N(C(=O)N)C2=CC=CC=C21 FFGPTBGBLSHEPO-UHFFFAOYSA-N 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000006072 paste Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000001960 triggered effect Effects 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
- B29C48/285—Feeding the extrusion material to the extruder
- B29C48/288—Feeding the extrusion material to the extruder in solid form, e.g. powder or granules
- B29C48/2888—Feeding the extrusion material to the extruder in solid form, e.g. powder or granules in thread form or in strip form, e.g. rubber strips
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
- B29B7/34—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
- B29B7/38—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary
- B29B7/40—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft
- B29B7/42—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft with screw or helix
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
- B29B7/58—Component parts, details or accessories; Auxiliary operations
- B29B7/60—Component parts, details or accessories; Auxiliary operations for feeding, e.g. end guides for the incoming material
- B29B7/603—Component parts, details or accessories; Auxiliary operations for feeding, e.g. end guides for the incoming material in measured doses, e.g. proportioning of several materials
-
- 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
- B29C48/285—Feeding the extrusion material to the extruder
- B29C48/288—Feeding the extrusion material to the extruder in solid form, e.g. powder or granules
- B29C48/2886—Feeding the extrusion material to the extruder in solid form, e.g. powder or granules of fillers or of fibrous materials, e.g. short-fibre reinforcements
-
- 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
- B29C48/285—Feeding the extrusion material to the extruder
- B29C48/297—Feeding the extrusion material to the extruder at several locations, e.g. using several hoppers or using a separate additive feeding
-
- 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
- B29C48/92—Measuring, controlling or regulating
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92009—Measured parameter
- B29C2948/92019—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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92009—Measured parameter
- B29C2948/92085—Velocity
- B29C2948/92104—Flow or feed rate
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92009—Measured parameter
- B29C2948/9218—Weight
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92009—Measured parameter
- B29C2948/92209—Temperature
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92323—Location or phase of measurement
- B29C2948/92333—Raw material handling or dosing, e.g. active hopper or feeding device
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/9258—Velocity
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/9258—Velocity
- B29C2948/9259—Angular velocity
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92723—Content, e.g. percentage of humidity, volatiles, contaminants or degassing
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92819—Location or phase of control
- B29C2948/92828—Raw material handling or dosing, e.g. active hopper or feeding device
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
Description
Schneckenpresse zur Verarbeitung von Kunststoffmate-Screw press for processing plastic materials
rial ien Die Erfindung bezieht sich auf eine Schneckenpresse zur Verarbeitung von Kunststoffmaterialien mit einer Vorrichtung für die Materialzuführung und einem die Einrichtungen zum Plastifizieren der Kunststoffmaterialien aufweisenden, am Ausstoßende mit einer Formdüse versehenen Zylinder. rial ien The invention relates to a screw press for Processing of plastic materials with a device for material feeding and one having the devices for plasticizing the plastic materials, cylinder provided with a shaping nozzle at the discharge end.
Das Kunststoffmaterial wird als Granulat, Pulver oder Paste durch einen dem Zylinder zugeordneten Material trichter der im Zylinder drehbar gelagerten und antreib baren Schnecke zugeführt.The plastic material is made up as granules, powder or paste a material funnel assigned to the cylinder, which is rotatably mounted in the cylinder and drivable screw supplied.
Obwohl die Materialzuführung im allgemeinen im freien Fall erfolgt, so kann diese auch als eine Zw&ngszuführung, durch die Anwendung von sogenannten Stopfschnecken oder Einzugswalzen - je nach Materialart und Material form - ausgebildet sein.Although the material is generally fed in in free fall, this can also be used as a forced feed, through the use of so-called Plug screws or feed rollers - depending on the type and shape of the material - formed be.
Bedingt durch Produkt- und Verfahrensforderungen werden durch den Material trichter der Schneckenpresse häufig i4ischprodukte aus Roh- und Füllstoffen, versehen mit Additiven, zugeführt. Diese Mischprodukte werden in Mischern der verschiedensten Ausführungen gemischt und dann dem Material trichter zugeführt. Beim Durchlaufen des teriltrichters treten infolge der unterschiedlichen Dichte und der damit verbundenen unterschiedlichen Gesichte der einzelnen Materialteilchen Entmischungen auf, durch die die Qualität des Endproduktes beeint- chtigt wird.Due to product and process requirements, the Material funnel of the screw press often mixed products made from raw materials and fillers, provided with additives. These mixed products are used in a wide variety of mixers Mixed versions and then fed to the material hopper. When going through of the teril funnel occur as a result of the different density and the associated different faces of the individual material particles segregation on, through which affects the quality of the end product.
Im Rahmen der heute angewandten Technologie und vor allen Dingen der Tatsache, daß Materialeinsparungen aus Gründen der besseren Rohstoffnutzung und der Kosteneinschränkungen betrieben werden müssen, ist es zur Regel geworden, sogenannte Rand- oder Formatierungsstreifen von bahnförmigen Materialien prozeßsynchron der Schneckenpresse im Recycling-Verfahren wieder zuzuführen. Dabei wird in der Regel nach vier Verfahrensrichtungen gearbeitet: 1. Zerkleinerung der Randstreifen und Zumischung in den Material trichter.In the context of the technology used today and, above all, the The fact that material savings for reasons of better raw material use and the cost restrictions have to be operated, it has become the rule, so-called Edge or formatting strips of web-shaped materials in synchronism with the process Feeding the screw press back into the recycling process. This is usually done worked according to four process directions: 1. Shredding the edge strips and Mixing in the material funnel.
2. Zerkleinerung der Randstreifen und Zuführung über einen Bypass mittels einer Stopfschnecke in den Zylinder der Schneckenpresse.2. Shredding of the edge strips and feeding via a bypass into the cylinder of the screw press by means of a stuffing screw.
3. Plastifizierung der Randstreifen in einer externen kleineren Schneckenpresse mit anschließender Herstelluns von Granulat und späterer Zuführung in den Material trichter der Hauptschneckenpresse.3. Plasticization of the edge strips in a smaller external screw press with subsequent production of granules and subsequent feeding into the material funnel of the main screw press.
4. Plastifizierung der Randstreifen in einer kleineren Schneckenpresse, die über einen Bypass die p -stifizierte Nasse direkt dem Zylinder der Hauptschneckenpresse wieder zuführt.4. Plasticization of the edge strips in a smaller screw press, the p -stified wet via a bypass directly to the cylinder of the main screw press feeds again.
Die unter 1. und 2. erwähnten Verfahren haben einen schlechten Wirkungsgrad, da die zerkleinerten Streifen und deren Restteile ein zu geringes Schüttgewicht und damit verbundene geringere Förderfähigkeit besitzen.The processes mentioned under 1. and 2. have a poor efficiency, because the shredded strips and their remaining parts have too low a bulk density and consequently have lower eligibility.
Das Verfahren nach Punkt 3 beinhaltet einen erheblichen Energie- und Investitionsaufwand. Die wiedergewonnenen Granulate besitzen nur noch die Qualitzt für den sogenannten zweiten Verwendungsgrad, d.h. sie können nur noch bei minderwertigen Produkten verwertet werden.The procedure according to point 3 involves a considerable amount of energy and Capital expenditure. The recovered granules only have the same quality for the so-called second degree of use, i.e. they can only be used for inferior ones Products are recycled.
Das Verfahren nach Punkt 4 ist eine durchaus praktische Lösung. Es erfordert jedoch zur Durchführung einen erheblichen Synchronisierungsaufwand mit der Hauptschneckenpresse, so daß mit diesem Verfahren nicht unerhebliche Investitionskosten verbunden sind.The procedure according to point 4 is a very practical solution. It however, requires a considerable amount of synchronization to be carried out the main screw press, so that with this process not inconsiderable investment costs are connected.
Der Erfindung liegt die Aufgabe zugrunde, eine Schneckenpresse der eingangs genannten Art so zu gestalten, daß Mischvorrichtungen für die verschiedenen Rohstoffarten entfallen, Entmischungen auf dem Transportweg zur Schnekke somit nicht auftreten können und der Eirlzug der verschiedenen Rohstoffarten in den Schneckenraum unabhängig voneinander geregelt werden kann.The invention has for its object to provide a screw press of the To make the aforementioned type so that mixing devices for the different There are no types of raw materials, so there is no segregation on the way to the snail can occur and the egg movement of the various types of raw materials into the snail space can be regulated independently of each other.
Diese Aufgabe wird nach der Erfindung dadurch gelöst, daß die Vorrichtung für die Naterialzuführung aus mehreren Materialeinugswerken besteht, die jeweils mindestens ein antreibbares, einen Einzugsspalt begrenzendes, in einem Gehäuse um horizontale Achsen drehbar gelagertes Walzenpaar oder eine um eine vertikale Achse drehbare und antreibbare Stopfschnecke aufweisen.This object is achieved according to the invention in that the device for feeding material from several Material intake works, each at least one drivable, a feed gap delimiting, in one Housing pair of rollers rotatably mounted about horizontal axes or one about a vertical one Have axis rotatable and drivable plug screw.
Bei einer Ausführungsform der Erfindung sind dem mit Einrichtungen zum Plastifizicren der Kunststoffmaterialicn vetseherìen Zylinder mehrere Material einzugswerke ncbenelnanderliegend vorgeschaltet, wobei sich eine gemeinsame Schnecke über die gesamte Länge der Einzugswerke und des Zylinders erstreckt.In one embodiment of the invention, these are with facilities To plasticize the plastic material, the cylinder uses several materials Infeed mechanisms are arranged upstream of each other, with a common screw Extends over the entire length of the intake mechanisms and the cylinder.
Es können ein Einzugswerk für Kunststoffstreifenmaterial, ein Einzugswerk für Kunststoffgranulat und ein Einzugswerk für Füllstoffe vorgesehen sein.A feed unit for plastic strip material, a feed unit for plastic granulate and a feed mechanism for fillers.
Die Drehzahlen der Walzen bzw. der Stopfschnecken der Einzugswerke können unabhängig voneinander geregelt werden, so daß die Materialzufuhr jeder Naterialart zum Schneckenraum der Schneckenpresse unabhängig von den anderen Diaterialarten geregelt werden kann.The speeds of the rollers or the screw feeders of the intake mechanisms can be regulated independently of each other, so that the supply of material for each type of material to the screw chamber of the screw press independent of the other types of slide material can be regulated.
Für die Regelung wird ein Prozeßrechner verwendet, dem als Meßwerte der Materialdruck im Innenraum der Einzugs-.erke zwischen den Walzen bzw. der Stopfschnecke und der Schnecke der Schneckenpresse sowie der Materialverbrauch im Material trichter eingegeben werden.A process computer is used for the regulation, as measured values the material pressure in the interior of the intake .erke between the rollers or the auger and the screw of the screw press as well as the material consumption in the material hopper can be entered.
In dem Prozeßrechner, dem ferner die Soll-Werte für den Materialverbrauch und für den Naterialdruck eingegeben wurden, findet ein Soll-Ist-Wert-Vergleich statt, über den dann bei Abweichungen von den Soll-Lierten eine Steuerfunktion ausgelöst wird, durch die dann die Drehzahl der Walzen bzw. der Stopfschnecken der Eirzugswerke beeinflußt werden.In the process computer, which also contains the target values for material consumption and have been entered for the material pressure, a target / actual value comparison takes place instead of, about then in the event of deviations from the target line one Control function is triggered, through which then the speed of the rollers or the screw feeders of the catchment works are influenced.
Bei der erfindungsgemäßen Schneckenpresse können auch mehrere Einzugswerke auf einen gemeinsamen zum Schnecke kenraum führenden Ablaufraum arbeiten.In the screw press according to the invention, several intake mechanisms can also be used work on a common drainage space leading to the screw ken space.
Ausführungsbeispiele der Erfindung sind in den Zeichnungen dargestellt und werden im folgenden beschrieben.Embodiments of the invention are shown in the drawings and are described below.
Es zeigen: Fig. 1 eine Teilansicht einer Schneckenpresse im Horizontalschnitt, die mit drei Einzugswerken für Kunststoffrohmaterialien ausgerüstet ist, Fig. 2 eine Abwandlung der Konstruktion nach der Fig.1 shows a partial view of a screw press in horizontal section, which is equipped with three intake mechanisms for plastic raw materials, Fig. 2 a modification of the construction according to Fig.
1, bei der nur ein Einzugswerk für Kunststoffmaterial verwendet wird, und Fig. 3 eine Schneckenpresse mit drei nebeneinanderliegenden Einzugswerken für unterschiedliche Kunststoffmaterialarten, die mit einem Regelkreis ausgerüstet ist. 1, in which only one feed mechanism is used for plastic material, and FIG. 3 shows a screw press with three feed mechanisms lying next to one another for different types of plastic material, which is equipped with a control circuit.
In den in den Zeichnungen dargestellten Ausführungsbeispielen ist der Zylinder 1 mit Einrichtungen zum 'astifixieren der Kunststoffmatel-ialien ausgerüstet und ~3eist am Ausstoßende eine Formdüse 2 auf. In der mittigen Boh rung des Zylinders 1 ist drehbar und antreibbar eine Schnecke 3 gelagert, die sich auch über die Gesamtlänge der Materialeinzugswerke 4 erstreckt, die dem Zylinder vorgeschaltet sind.In the exemplary embodiments shown in the drawings the cylinder 1 is equipped with devices for fixing the plastic materials and ~ 3eis a shaping nozzle 2 at the discharge end. In the middle boh tion of the cylinder 1 is rotatably and drivably mounted a screw 3, which is also Extends over the entire length of the material intake mechanisms 4, which are connected upstream of the cylinder are.
Iy den Ausführungsbeispielen sind dem Zylinder 1 jeweils drei Materialeinzugswerke nebeneinanderliegend vorgeshaltet, die in den vertikalen Ebenen 5 untereinander und mit dem Zylinder 1 zusammengeflanscht sind. An dem Außenfl ansch 6 des ersten N#i#erial einzugswerks ist der Schneckendntrieb befestigt. Die Flanschscheiben der einzelnen Materialeinzugswerke und des Zylinders 1 sind über Schrauben 7 miteinander verbunden.In the exemplary embodiments, the cylinder 1 has three material intake mechanisms in each case next to each other, the vertical planes 5 below each other and are flanged together with the cylinder 1. On the outer flange 6 of the first The worm drive is attached to the n # i # erial draw-in mechanism. The flange washers of the individual material infeed mechanisms and the cylinder 1 are connected to one another via screws 7 tied together.
Jedes Materialeinzugswerk ist mit einem einen Einzugsspalt begrenzenden Walzenpaar 8 ausgerüstet, bei dem die Walzen um horizontale Achsen drehbar und antreibbar in einem Gehäuse 9 gelagert sind, das an einem horizontalen, zylindrischen Teil 10 befestigt ist, das mit einer mittigen Aufnahmebohrung für die Schnecke 3 versehen ist.Each material infeed unit is equipped with an infeed gap that delimits it Pair of rollers 8 equipped, in which the rollers can be rotated and driven about horizontal axes are mounted in a housing 9 on a horizontal, cylindrical part 10 is attached, which is provided with a central receiving hole for the screw 3 is.
Die Walzenpaare 8 haben die Aufgabe, die Schnecke 3 mit dem cewünschten Kunststoffmaterial kontrolliert zu versorgen und einen sich über den Bereich der Schnecke gegen die Formdüse 2 aufbauenden Naterialdruck abzufangen. Hierdurch wird erreicht, daß der an sich infolge der Schneckengange und des geometrischen Aufbaus der Schnecke pulsierunde Materialfluß eine Verqleichmäßigung erfährt.The roller pairs 8 have the task of the screw 3 with the desired Plastic material to supply controlled and one over the area of the To intercept the screw against the forming nozzle 2 building material pressure. This will achieved that the per se as a result of the worm threads and the geometric structure the screw's pulsating material flow is evened out.
Die Oberfl #chenbeschaffenheit der Walzen des Naterialeinzuges kann dem zur Verarbeitung gelangenden Kunststoffmaterial angepaßt sein. Hierdurch ergibt sich die Möglichkeit, eine optimale Füllung des Schneckenraumes im Bereich des Materialeinzugswerks zu erreichen.The surface quality of the rollers of the material intake can be adapted to the plastic material to be processed. This results in the opportunity an optimal filling of the screw space in the area of the material intake system.
Der sich gegenüber der Formdüse 2 aufbauende tvaterialdruck wird mit geeigneten Meßwertaufnehmern an der Stelle 11, also in dem Raum zwischen dem Walzenpaar 8 des Naterialeinzugswerks und der Schnecke 3 oemessen.The material pressure that builds up in relation to the shaping nozzle 2 becomes with suitable transducers at point 11, that is, in the space between the pair of rollers 8 of the material intake system and the auger 3 oemessen.
Das Ergebnis kann - je nach Steuerungsaufwand - zur Regelung der Drehzahl der Walzenpaare 8 verwandt werden. Jedes Walzenpaar kann mit einem eigenen drei##ahlgeregelte-n Antrieb ausgerüstet sein. Es ist jedoch auch denkbar, mehrere Walzenpaare über einen -gemeinsamen Antrieb mit regelbaren Untergetrieben auszurüsten.Depending on the control effort, the result can be used to regulate the speed the roller pairs 8 are used. Each pair of rollers can have its own three ## ahlregulated-n Be equipped with a drive. However, it is also conceivable to have several pairs of rollers over one - to equip a common drive with adjustable lower gears.
Bei dem Ausführungsbeispiel nach der Fig. 2 wird nur das vordere Naterialeinzugswerk benutzt, während den beider anderen Materialeinzugswerken kein Kunststoffmaterial zugeführt wird. Bei den beiden nicht benutzten Materialeinzugswerken;ist das Gehäuse 9 mit dem Walzenpaar 8 entfernt und der zylindrische Teil 10 mit einem Verschluß 2 gegenüber der Schnecke 3 ausgerüstet.In the embodiment according to FIG. 2, only the front material intake mechanism is used used, while the other two material infeed systems no plastic material is fed. In the case of the two unused material feed units; is the housing 9 removed with the pair of rollers 8 and the cylindrical part 10 with a closure 2 opposite the screw 3 equipped.
Bei der Schneckenpresse nach der Fig. 3 werden der Schoekke 3 unterschiedliche Material arten zugeführt.In the screw press according to FIG. 3, the Schoekke 3 are different Material types fed.
Über den Material trichter 13 wird Material 1t in der Form von Füllstoffen bzw. von Additiven zugefuhrt. Über den Material trichter 15 wird Rohstoff 16 in der Form von Grnulat in die Schneckenpresse eingespeist.Via the material funnel 13, material 1t is in the form of fillers or supplied by additives. Via the material hopper 15, raw material 16 is in fed into the screw press in the form of granules.
Die Material trichter 13 und 15 können als Wärmetauscher t detsein und dienen der Erwärmung des T-,attrials 14 und 16, so daß eine leichtere Verarbeitung in den Materialeinzugswerken gegeben ist.The material hoppers 13 and 15 can be used as heat exchangers and serve to heat the T, attrials 14 and 16 so that a easier processing in the material infeed is given.
Ferner können den Material trichtern 13, 15 Verbrauchskontrollen 17 in Form von Waageeinrichtungen zugeordnet werden. Durch diese Waageeinrichtungen wird der Verbrauch an Rohmaterial in den Materialtrichtern 13 und 15 gemessen.Furthermore, the material can have funnels 13, 15 consumption controls 17 be assigned in the form of weighing devices. Through these weighing devices the consumption of raw material in the material hoppers 13 and 15 is measured.
leber eine Walze 18 wird dem vorderen Materialeinzugswerk t ein Kunststoffrandstreifen 19 zugeführt. Dieser Fandstreifen passiert den Einzugsspalt zwischen dem Walzenpaar 8 und wird der Schnecke 3 aufgegeben.Leber a roller 18 is the front material intake t a plastic edge strip 19 supplied. This tail strip passes through the nip between the pair of rollers 8 and is given up to the screw 3.
Es ist möglich, mehrere Kunststoffrandstreifen durch den von dem Walzenpaar 8 begrenzten Einzugsspalt hindurchzuführen. Hierbei kann es vorkommen, daß die Kunststoffrandstreifen eine unterschiedliche Dicke besitzen. Dies kann zur Folge haben, daß der dünnere Kunststoffrandstreifen von dem Walzenpaar nicht ordnungsgemäß transportiert wird. Um dies zu verhindern, ist das Gehäuse 9 des aterialeinzugwerks mit einer Einzugsdüse 20 ausgerüstet, die in dem Gehäuse um eine vertikale Achse, wie durch den Pfeil 21 angedeutet, drehbar gelagert und antreibbar ist. Bei der Rotationsbewegung der- Einzugsdüse 20 wird ein Zusammendrehen mehrerer Kunststoffrandstreifen 19 erreicht, so daß dem Einzugsspalt des Walzenpaares 8 ein aus mehreren Randstreifen zusammengedrehter Strang zugeführt wird.It is possible to run several plastic edge strips through the pair of rollers 8 limited feed gap. It can happen that the plastic edge strips have a different thickness. This can result in the thinner Plastic edge strip is not being transported properly by the pair of rollers. To prevent this, the housing 9 of the aterialeinzugwerk is with a feed nozzle 20 fitted in the housing about a vertical axis as indicated by the arrow 21 indicated, rotatably mounted and drivable. During the rotational movement of the Infeed nozzle 20 is achieved by twisting several plastic edge strips 19 together, so that the nip of the pair of rollers 8 is a twisted together from several edge strips Strand is fed.
Eine derartige Strangbildung kann auch dadurch erreicht werden, daß das Gehause 9 um eine vertikale Achse drehbar auf dem zylindrischen Teil 10 gelagert und antreibbar ist. Die Rotationsbewegung des Gehäuses 9 wird durch den Pfeil 22 angedeutet.Such a strand formation can also be achieved in that the housing 9 rotatable about a vertical axis on the cylindrical Part 10 is stored and drivable. The rotational movement of the housing 9 is through the arrow 22 indicated.
Bei dem Ausführungsbeispiel nach der Fig. 3 ist der Schneckenpresse eine Regel- und Steuereinrichtung zugeordnet, die einen Prozeß rechner 23 aufweist. In diesem Prozeßrechner können über die Funktionslinien 24 und 25 die Drehzahlen für die Walzenpaare 8 und für die Förderung der Kunststoffrandstreifen 19 kor,trolliert und geregelt werden.In the embodiment according to FIG. 3, the screw press is a regulating and control device is assigned which has a process computer 23. In this process computer, via the function lines 24 and 25, the speeds for the roller pairs 8 and for the promotion of the plastic edge strips 19 kor, trolled and be regulated.
Diese Regelung erfolgt in Abhengigkeit vom Materialdruck in dem Raum der Materialeinzugswerke 4 oberhalb der Schnecke 3 und in Abhängigkeit von dem Verbrauch an Kunststoffmaterialien, der durch die Waageeinrichtungen 17 gemessen und längs der Funktionslinien 26 in den Prozeßrechner eingegeben wird. Der an der Stelle 11 gemessene Naterialdruck wird über die Funktionslinie 27 dem Prozeßrechner 23 eingegeben.This regulation takes place as a function of the material pressure in the room of the material infeed mechanisms 4 above the screw 3 and depending on the consumption of plastic materials measured by the weighing devices 17 and lengthways of the function lines 26 is entered into the process computer. The one at point 11 The measured material pressure is input to the process computer 23 via the function line 27.
In dem Prozeßrechner werden die Meßwerte des Materialdrucks und des Rohstoffverbrauchs mit Soll-Werten verglichen. Bei diesem Soll-Ist-Wert-Vergleich festgestellte Abweichungen werden zur Regelung der Drehzahlen der Materialeinzugswerke bzw. der Streifenförderung ver#;endet.In the process computer, the measured values of the material pressure and the Raw material consumption compared with target values. With this target / actual value comparison detected deviations are used to regulate the speeds of the material intake systems or the strip conveyance ends.
Über eine Funktionslinie 28 findet eine Kontrolle der Material temperatur statt. Bei dem Ausführungsbeispiel nach der Fig. 3 sind über die Höhe des Materialtrici#ters 13 verteilt drei Temperaturfühler 29 cingeordnet. Auch an dem Materialtrichter 15 werden mindestens drei Temperaturmessungen vorgenommen, und diese Meßwerte werden dem Prozeßrechner 29 eingegeben. Im Prozeßrechner findet ein Soll-Ist-Wert-Vergleich statt, wobei Abweichungen von den eingegebenen Soll-Werten eine Steuerfunktion zur Vercle chmßigung der Temperatur in den Naterialtrich-1 ern auslösen.The material temperature is checked via a function line 28 instead of. In the embodiment according to FIG. 3, the height of the material triciter 13 distributes three temperature sensors 29 in an organized manner. Also on the material hopper 15 at least three temperature measurements are made and these readings are taken the process computer 29 entered. A target / actual value comparison takes place in the process computer instead, with deviations from the entered target values a control function for Induce relaxation of the temperature in the material trays.
Bezugszeichenliste 1 Zylinder 2 Formdüse 3 Schnecke 4 Naterialeinzugswerke 5 Ebene 6 Außenflansch 7 Schrauben 8 Walzenpaar 9 Gehäuse 10 zylindr. Teil 11 Stelle 12 Verschluß 13 Material trichter 14 Material (Füllstoffe, Additive) 15 Material trichter 16 Material (Rohstoff) 17 Waageeinrichtungen 18 Walze 19 Kunststoffrandstreifen 20 Einzugsdüse 21 Pfeil 22 Pfeil 23 Prozeßrechner 24 Funktionslinien 25 26 27 28 29 Temperaturfühler LIST OF REFERENCE NUMERALS 1 cylinder 2 forming nozzle 3 screw 4 material intake mechanisms 5 level 6 outer flange 7 screws 8 roller pair 9 housing 10 cylindrical. Part 11 digit 12 closure 13 material funnel 14 material (fillers, additives) 15 material funnel 16 material (raw material) 17 weighing devices 18 roller 19 plastic edge strips 20 Infeed nozzle 21 Arrow 22 Arrow 23 Process computer 24 Function lines 25 26 27 28 29 temperature sensors
Claims (13)
Priority Applications (1)
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DE3233416A DE3233416C3 (en) | 1982-09-09 | 1982-09-09 | Screw press for processing plastics |
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DE3233416A DE3233416C3 (en) | 1982-09-09 | 1982-09-09 | Screw press for processing plastics |
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DE3233416A1 true DE3233416A1 (en) | 1984-05-03 |
DE3233416C2 DE3233416C2 (en) | 1990-07-26 |
DE3233416C3 DE3233416C3 (en) | 1996-08-29 |
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Cited By (9)
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WO1990007412A1 (en) * | 1988-12-23 | 1990-07-12 | Jv Kunststoffwerk Gmbh | Proces and device for producing plastic mouldings |
US5110275A (en) * | 1990-05-25 | 1992-05-05 | Werner & Pfleiderer Gmbh | Extruder for the preparation of plastic material with the introduction of at least one fibre strand |
DE19635706A1 (en) * | 1996-09-03 | 1998-03-05 | Andreas Prof Dr Limper | Feeding rubber strip to extruder |
WO1998009792A1 (en) * | 1996-09-03 | 1998-03-12 | Andreas Limper | Process for plastification, straining, dosing and transporting high viscous melts and device for carrying out the process |
EP1249324A2 (en) * | 2001-04-10 | 2002-10-16 | Händle Gmbh | Extruder for for plastic materials, in particular for ceramic materials |
NL1017951C2 (en) * | 2001-04-26 | 2002-11-05 | Cps Color B V | Device and method for the continuous processing of thermoplastic plastic compositions and additives. |
CN104339615A (en) * | 2014-07-24 | 2015-02-11 | 四川中装科技有限公司 | Feed device of extruder |
CN104494089A (en) * | 2014-11-27 | 2015-04-08 | 涂兴家 | Making technology of plastic simulation artistic rattan |
WO2023161941A1 (en) * | 2022-02-28 | 2023-08-31 | Eco-Brick Innovio Ltd | Processes for conversion of waste materials |
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CH691580A5 (en) * | 1996-10-04 | 2001-08-31 | Buehler Ag Patentabteilung | Extrusion of powdered substances. |
DE10121034B4 (en) * | 2001-04-25 | 2005-08-25 | Bayer, René | Device for the continuous dosing of chips and fiber material |
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Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1990007412A1 (en) * | 1988-12-23 | 1990-07-12 | Jv Kunststoffwerk Gmbh | Proces and device for producing plastic mouldings |
US5234656A (en) * | 1988-12-23 | 1993-08-10 | Jv Kunststoffwerk Gmbh | Process and device to prepare a mixture for use in manufacturing plastic moulded parts |
US5110275A (en) * | 1990-05-25 | 1992-05-05 | Werner & Pfleiderer Gmbh | Extruder for the preparation of plastic material with the introduction of at least one fibre strand |
DE19635706A1 (en) * | 1996-09-03 | 1998-03-05 | Andreas Prof Dr Limper | Feeding rubber strip to extruder |
WO1998009792A1 (en) * | 1996-09-03 | 1998-03-12 | Andreas Limper | Process for plastification, straining, dosing and transporting high viscous melts and device for carrying out the process |
DE19635706C2 (en) * | 1996-09-03 | 1998-12-03 | Andreas Prof Dr Limper | Process for plasticizing, sieving, dosing and conveying highly viscous rubber mixtures and device for carrying out the process |
EP1249324A2 (en) * | 2001-04-10 | 2002-10-16 | Händle Gmbh | Extruder for for plastic materials, in particular for ceramic materials |
EP1249324A3 (en) * | 2001-04-10 | 2003-10-22 | Händle Gmbh | Extruder for for plastic materials, in particular for ceramic materials |
NL1017951C2 (en) * | 2001-04-26 | 2002-11-05 | Cps Color B V | Device and method for the continuous processing of thermoplastic plastic compositions and additives. |
WO2002087849A1 (en) * | 2001-04-26 | 2002-11-07 | Cps Color B.V. | Device and method for the continuous processing of thermoplastic plastic masses and additives |
CN104339615A (en) * | 2014-07-24 | 2015-02-11 | 四川中装科技有限公司 | Feed device of extruder |
CN104494089A (en) * | 2014-11-27 | 2015-04-08 | 涂兴家 | Making technology of plastic simulation artistic rattan |
WO2023161941A1 (en) * | 2022-02-28 | 2023-08-31 | Eco-Brick Innovio Ltd | Processes for conversion of waste materials |
Also Published As
Publication number | Publication date |
---|---|
DE3233416C2 (en) | 1990-07-26 |
DE3233416C3 (en) | 1996-08-29 |
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