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WO2025024879A1 - Installation de traitement de matière plastique - Google Patents

Installation de traitement de matière plastique Download PDF

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Publication number
WO2025024879A1
WO2025024879A1 PCT/AT2024/060295 AT2024060295W WO2025024879A1 WO 2025024879 A1 WO2025024879 A1 WO 2025024879A1 AT 2024060295 W AT2024060295 W AT 2024060295W WO 2025024879 A1 WO2025024879 A1 WO 2025024879A1
Authority
WO
WIPO (PCT)
Prior art keywords
shaft body
processing unit
housing
processing
shaft
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.)
Pending
Application number
PCT/AT2024/060295
Other languages
German (de)
English (en)
Inventor
Günther KLAMMER
Wolfgang Roland
Peter HIERZENBERGER
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Next Generation Recyclingmaschinen GmbH
Original Assignee
Next Generation Recyclingmaschinen GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Next Generation Recyclingmaschinen GmbH filed Critical Next Generation Recyclingmaschinen GmbH
Publication of WO2025024879A1 publication Critical patent/WO2025024879A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • B29B7/02—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
    • B29B7/22—Component parts, details or accessories; Auxiliary operations
    • B29B7/24—Component parts, details or accessories; Auxiliary operations for feeding
    • 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
    • B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
    • B29B17/0026—Recovery of plastics or other constituents of waste material containing plastics by agglomeration or compacting
    • 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
    • B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
    • B29B17/04—Disintegrating plastics, e.g. by milling
    • 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
    • B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
    • B29B17/04—Disintegrating plastics, e.g. by milling
    • B29B17/0412—Disintegrating plastics, e.g. by milling to large particles, e.g. beads, granules, flakes, slices
    • 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
    • B29B7/02—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
    • B29B7/22—Component parts, details or accessories; Auxiliary operations
    • B29B7/24—Component parts, details or accessories; Auxiliary operations for feeding
    • B29B7/242—Component parts, details or accessories; Auxiliary operations for feeding in measured doses
    • 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
    • B29B7/02—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
    • B29B7/22—Component parts, details or accessories; Auxiliary operations
    • B29B7/24—Component parts, details or accessories; Auxiliary operations for feeding
    • B29B7/242—Component parts, details or accessories; Auxiliary operations for feeding in measured doses
    • B29B7/244—Component parts, details or accessories; Auxiliary operations for feeding in measured doses of several materials
    • 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
    • B29B7/46—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft
    • B29B7/48—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws
    • 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
    • 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
    • B29B7/74—Mixing; Kneading using other mixers or combinations of mixers, e.g. of dissimilar mixers ; Plant
    • B29B7/7476—Systems, i.e. flow charts or diagrams; Plants
    • B29B7/7485—Systems, i.e. flow charts or diagrams; Plants with consecutive mixers, e.g. with premixing some of the components
    • 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
    • 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
    • B29C48/287—Raw material pre-treatment while 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
    • B29C48/285—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
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/375—Plasticisers, homogenisers or feeders comprising two or more stages
    • 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
    • B29C48/375—Plasticisers, homogenisers or feeders comprising two or more stages
    • B29C48/385—Plasticisers, homogenisers or feeders comprising two or more stages using two or more serially arranged screws in separate barrels
    • 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
    • B29C48/375—Plasticisers, homogenisers or feeders comprising two or more stages
    • B29C48/39—Plasticisers, homogenisers or feeders comprising two or more stages a first extruder feeding the melt into an intermediate location of a second extruder
    • 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
    • B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
    • B29C48/455—Screws arranged to convey material towards each other, e.g. separate screws arranged after each other and feeding in opposite directions
    • 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
    • B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
    • B29B17/04—Disintegrating plastics, e.g. by milling
    • B29B2017/0424—Specific disintegrating techniques; devices therefor
    • B29B2017/048—Cutter-compactors, e.g. of the EREMA type
    • 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
    • B29K2105/26—Scrap or recycled material

Definitions

  • the invention relates to a processing plant for plastic material and a method for processing plastic material, in particular for processing thermoplastic material for its recycling.
  • an upstream processing step usually comprising a comminution step.
  • This typically includes a comminution step by shredding, cutting or grinding the plastic material in order to obtain a preferably free-flowing bulk material that can be drawn into a plasticizing device, a so-called extruder.
  • This processing is either carried out in a decoupled, separate upstream step by separate shredders, or in a step directly upstream of the extruder, i.e. virtually inline.
  • the shredded material is temporarily stored in a silo, for example, and has the advantage that the silo serves as an intermediate storage facility and thus fluctuations in the material supply can be compensated for.
  • AT 522051 B 1 discloses a processing plant for plastic material in which a plasticizing device is fed directly via a processing unit consisting of a shredding device and a conveying device.
  • a combined processing plant that includes the sub-functions of shredding, conveying and melting has the disadvantage that the interlinking of the system components results in a mutual dependency, which has a detrimental effect on the system's availability and flexibility of use. The entire system must be stopped, particularly in the event of a malfunction or defect in the shredding unit, for example, but also when maintenance work is required (e.g. changing blades).
  • the known processing plants have generally proven themselves to be quite good in practice. However, with varying material input, especially with different volumes, amounts and densities of plastic material, the known processing plants often reach their performance limits or do not deliver a satisfactory quality of the processed plastic. In addition, the known processing plants cannot achieve a uniform transfer of the shredded plastic material to the plasticizing device in all operating cases.
  • the object of the present invention was to overcome the disadvantages of the prior art and to provide a processing plant and a method which combines the advantages of processing plants with a decoupled processing unit and with a coupled processing unit and ensures improved plant availability.
  • the object of the invention was to provide a processing plant which ensures a high quality of the processed material even with changing material input, for example with regard to volume, quantity and density of the material.
  • the invention relates to a processing plant for plastic material, comprising a first processing unit, comprising a first housing and a first shaft body, wherein the first shaft body extends along a first longitudinal axis, and wherein the first shaft body is arranged in a rotatable manner in the first housing.
  • the processing plant further comprises a plasticizing device, preferably a single plasticizing device, with an extruder housing and at least one extruder screw, wherein the extruder screw extends along an extruder longitudinal axis, and wherein the extruder screw is arranged in a rotatable manner in the extruder housing, wherein the plasticizing device is arranged downstream of the first processing unit as viewed in the conveying direction, and wherein the first processing unit is fluidly connected to the plasticizing device indirectly, or directly, or directly.
  • a design as a single-screw extruder, as a twin-screw extruder, or as a multi-screw extruder is conceivable.
  • the plasticizing device is mentioned below, this always means at least one plasticizing device. This wording does not, of course, exclude the possibility of two or more plasticizing devices being provided.
  • a second processing unit is formed, wherein the second processing unit comprises a second housing and a second shaft body, wherein the second shaft body extends along a second longitudinal axis, and wherein the second shaft body is arranged rotatably mounted in the second housing, and wherein the The plasticizing device is arranged downstream of the second processing unit as viewed in the conveying direction, and the second processing unit is fluidly connected to the plasticizing device indirectly, or directly, or directly.
  • the plasticizing device can be fed indirectly, or directly, or directly, as required, by means of the first processing unit and/or by means of the second processing unit.
  • the two processing units are connected in parallel to one another in the process sequence. They can therefore be operated individually, alternately and/or simultaneously.
  • the conveying direction means the direction in which the plastic material introduced into the processing system is transported through the system.
  • the first and second housings preferably have a hollow cylindrical basic shape.
  • the advantage achieved by this is that it increases the possible feed volume with which the plasticizing unit can be fed with processed plastic material. This also increases the flexibility of the possible uses of such a processing plant with changing material input, especially with varying bulk density. As is well known, pre-shredded material or thick-walled material has a much higher bulk density than thin-walled materials or films.
  • By using two or more processing units or shredders connected in parallel it is now possible to react particularly variably to changing material input. For example, with comparatively high input bulk densities of the material, only one of the two processing units or shredders can be operated, while with comparatively low input bulk densities or input materials with a large volume, e.g. films, both processing units or shredders can be operated simultaneously.
  • the processing units can be designed differently, for example with different shredder blades, and thus, depending on the input material, either the first processing unit or the second processing unit can be operated.
  • the advantage of the invention is also that the input material can be flexibly fed to several positions of the processing plant via the processing units.
  • the first processing unit is arranged on the left side of the The material feeds and, as a result, the material feed stations (e.g. conveyor belts, roller feed) are spatially separated from one another between the first plasticizing unit and the second preparation unit on the right-hand side of the plasticizing unit.
  • the material feed stations e.g. conveyor belts, roller feed
  • the advantage of the invention is also that by mixing two different waste streams, or two different fractions, it is easy to feed both fractions through one processing unit each while both processing units are operating simultaneously.
  • the mixing ratio of the two material input streams can be regulated, for example, by the speed of the individual processing units.
  • the advantage of the invention is also that repair and maintenance work on one of the two processing units can be carried out during ongoing operation, i.e. while one of the two processing units remains in operation during maintenance of the other processing unit and the plasticizing device is fed by means of this processing unit.
  • a material transfer from the respective processing unit to the plasticizing device can preferably take place in a transfer area.
  • an outlet opening can be provided in the housing of the respective processing unit. This can be provided at the top, bottom or side of the housing, depending on the arrangement of the processing unit in relation to the plasticizing unit.
  • the extruder housing can in turn have at least one inlet opening. This inlet opening can in turn be provided at the top, bottom or side of the extruder housing, again depending on the arrangement of the processing unit in relation to the plasticizing unit.
  • the first longitudinal axis is arranged orthogonally to the extruder longitudinal axis, and/or wherein the second longitudinal axis is arranged orthogonally to the extruder longitudinal axis.
  • the rotation axes of the two processing units are therefore preferably at an angle of 90° to the rotation axis of the extruder screw. This has the particular advantage that processing units located opposite one another can be designed coaxially and can also be stored one inside the other.
  • first longitudinal axis and the second longitudinal axis are coaxial.
  • each of the processing units preferably has its own outlet opening in the respective housing, or the two processing units have a common outlet opening so that plastic material can reach the plasticizing device via the outlet openings or the common outlet opening via the filling opening. It can also be preferred for the two processing units to have a common outlet opening.
  • the outlet opening or openings can be formed on the underside of the respective housing and the filling opening can be arranged on the top of the extruder housing so that the plasticizing device can be filled from above.
  • the plasticizing device can be filled from below.
  • the outlet opening or openings can be formed on the top of the respective housing, and the filling opening can be arranged on the underside of the extruder housing.
  • the conveyed material can preferably be pushed up into the extruder housing by means of a conveying device.
  • the processing units can be arranged opposite each other with coaxial, common longitudinal axes, with the plasticizing device in the area the mutually facing axial ends of the two processing units.
  • a further advantage is that, due to the arrangement according to the invention, no sealing is required at the transition from the respective processing unit to the plasticizing device, because the material is conveyed from two directions when both processing units are operating simultaneously.
  • first shaft body and the second shaft body are coupled to each other in a rotationally fixed manner.
  • An advantage of permanently connected shaft bodies or shaft bodies which are arranged on a common, continuous shaft which comprises the first and second shaft bodies is that no separate or special shaft bearings are required.
  • Another advantage is that the two shaft bodies and thus the two processing units can be driven by a single, common drive.
  • the two processing units cannot be operated separately, for example at different speeds or directions of rotation, and thus independent or separate operation is not possible, this variant is nevertheless practical due to its structural simplicity.
  • this variant is also advantageous because it still allows material to be fed from two sides and an increased material feed is also possible using the two processing units.
  • the two shaft bodies can be of the same construction or designed differently.
  • an operation is conceivable in which one of the two processing units is fed with plastic material, while the other of the two processing units rotates in an essentially empty state.
  • first shaft body and the second shaft body may be designed to rotate independently of one another.
  • the two shaft bodies are advantageously designed to be axially free-floating, which makes independent, separate operation easier. Also advantageous is a design according to which it can be provided that the second shaft body is designed as a hollow shaft and that the first shaft body is at least partially arranged within the second shaft body. Alternatively, it can of course also be the case that the first shaft body is designed as a hollow shaft and that the second shaft body is at least partially arranged within the first shaft body.
  • each shaft body can be designed with its own drive and that the two drives can be arranged on the same side.
  • the two shaft bodies can be mounted one inside the other in the area of the hollow shaft. If a separate drive is designed for each shaft body, coupling can be carried out either via gears, belts or chains. It is also conceivable that the two drives are arranged axially one behind the other along the common longitudinal axis. In this case, it can be useful if at least one of the two drives also has a hollow shaft.
  • the second shaft body is partially mounted within the first shaft body.
  • the first shaft body can of course also be partially mounted within the second shaft body.
  • Shafts mounted in one another i.e. a shaft-in-shaft bearing
  • a shaft-in-shaft bearing can be realized by a recess on an axial end of one of the shaft bodies.
  • An extension corresponding to this recess can be formed on the axial end of the second shaft body facing this axial end, which extension is received and mounted in the recess, in particular is mounted in an axially free-floating manner.
  • Such a bearing arrangement can advantageously be positioned in the area of the material transfer, i.e. in particular at a filling opening of the plasticizing device.
  • Shafts mounted in such a way advantageously enable mutual rotation and thus a flexible operation of the system.
  • the two Shafts are mounted in an axially free-floating manner.
  • Shafts mounted inside one another preferably support each other at their axial ends facing each other in the area of the material transfer.
  • first longitudinal axis and the second longitudinal axis are axially parallel to each other.
  • any combination of coaxial shaft bodies and axially parallel shaft bodies is of course also conceivable.
  • first processing unit and the second processing unit are arranged on the same side of the plasticizing device, or alternatively the first processing unit and the second processing unit are arranged on opposite sides of the plasticizing device.
  • first processing unit and the second processing unit are arranged on the same side of the plasticizing device, in particular arranged next to each other with their axes parallel, this has the advantage that the shafts on the other side of the plasticizing device can be supported independently of each other and no shafts supported one inside the other are necessary, and at the same time a particularly independent operation of the processing units is possible.
  • the spatial space requirement for the processing unit on the opposite side of the plasticizing device is eliminated.
  • the processed material from the two processing units can flow into the plasticizing device at different axial positions, in particular at different, axially offset, filling openings along the extruder's longitudinal axis. This is advantageous, because such axially offset transfer areas enable the shaft bodies to be mounted on the opposite side of the plasticizing extruder without the shafts being mounted one inside the other.
  • first processing unit and the second processing unit are arranged on opposite sides of the plasticizing device, this is particularly advantageous in the case of coaxial longitudinal axes.
  • first processing unit and the second processing unit are fluidly connected to the plasticizing device at different positions offset from one another in the axial direction of the extruder longitudinal axis.
  • a single drive is designed to drive the first shaft body and the second shaft body, or that one drive is designed to drive the first shaft body and another drive is designed to drive the second shaft body.
  • the plasticizing device is usually designed and driven separately by means of a separate drive.
  • the advantage of a common drive for driving the first shaft body and the second shaft body of the two processing units is the structural simplicity and cost and space savings.
  • the advantage of separate drives for both shaft bodies is a high degree of flexibility in operation and maintenance.
  • the first processing unit prefferably be arranged downstream of a first feed device as viewed in the conveying direction, the first feed device being fluidly connected to the first processing unit, in particular to a first feed opening in the housing of the first processing unit.
  • the second processing unit prefferably be arranged downstream of a second feed device as viewed in the conveying direction, the second feed device being fluidly connected to the second processing unit, in particular to a second feed opening in the housing of the second processing unit.
  • first feed device and the second feed device can be designed to operate independently of each other.
  • Such a separate material supply for Each of the processing units can be advantageous in order to facilitate separate operation and to carry out this even more flexibly with regard to different types of material and operating modes.
  • the aspect of advantageous logistics in the provision of the input material described at the beginning comes into play.
  • first shaft body and the second shaft body are of identical construction, or that the first shaft body and the second shaft body are of different construction.
  • the advantage here is that the shaft bodies can be specialized for the processing, in particular for the crushing, of different types of input material.
  • the shaft bodies can, for example, have a conical or cylindrical shaft shell and differ in their diameter or pitch.
  • shaft bodies can have a section with a crushing device and a usually screw-shaped conveyor device that is usually connected to the crushing device.
  • Shaft bodies that have only a crushing device or only a conveyor device are also conceivable.
  • the crushing device and the conveyor device can also have several differently designed areas, zones or sections.
  • a locking means is designed for separately locking the first shaft body and for separately locking the second shaft body.
  • Fig. 2 is a detailed view of the bearing at the mutually facing axial ends of the shaft bodies
  • Fig. 3 a processing plant with two opposite processing units, wherein the shaft of one processing unit is designed as a hollow shaft and both drives are arranged on the same side, in plan view, partially sectioned;
  • Fig. 4 a processing plant with two opposite processing units with axially parallel longitudinal axes and two axially offset material transfer areas, in plan view, partially sectioned;
  • Fig. 5 a processing plant with two processing units on the same side of the plasticizing device with axially parallel longitudinal axes, in plan view, partially sectioned;
  • Fig. 6 a processing plant with several processing units, specifically with four processing units, in plan view, partially sectioned;
  • Fig. 7 a processing plant with two opposite processing units with material transfer from above and from below into the plasticizing device, in front view, cut away;
  • Fig. 8 a processing plant with two processing units on the same side of the plasticizing device with axially parallel longitudinal axes and twin-screw conveyor section and with material transfer from above and from below into the plasticizing device, in side view, cut away;
  • Fig. 9 the processing plant from Fig. 8, in plan view
  • Fig. 10 the processing plant from Fig. 8, in side view
  • Fig. 13 a processing plant with two processing units on the same side of the plasticizing device with axially parallel longitudinal axes and twin-screw conveyor section and with material transfer from above into the plasticizing device, in side view, cut away;
  • Fig. 14 the processing plant from Fig. 13, in plan view, sectioned.
  • the first processing unit 2 comprises a first housing 3 and a first shaft body 4, wherein a first feed opening and a first outlet opening 19 (not shown in detail due to the sectional views) can be formed on the first housing 3.
  • Plastic material can enter the first housing 3 from a first feed device (also not shown) via the first feed opening.
  • the first shaft body 4 extends along a first longitudinal axis 5.
  • the first shaft body 4 is arranged so as to be rotatably mounted in the first housing 3.
  • the second processing unit 10 comprises a second housing 11 and a second shaft body 12, wherein a second feed opening and a second outlet opening 21 (not shown in detail due to the sectional views) can be formed on the second housing 11.
  • Plastic material can enter the second housing 11 from a second feed device (also not shown) via the second feed opening.
  • the second shaft body 12 extends along a second longitudinal axis 13.
  • the second shaft body 12 is arranged rotatably mounted in the second housing 11.
  • a first outlet opening 19 is provided on the first housing 3 and a second outlet opening 21 is provided on the second housing 11.
  • a first filling opening 20 and a second filling opening 34 are provided in the extruder housing 7, or a single filling opening 35 is formed in the extruder housing 7.
  • a common outlet opening 33 is formed instead of two separate outlet openings 19, 21.
  • a single filling opening 35 is formed in the extruder housing 7, corresponding to or flow-connected to the common outlet opening 33.
  • the plasticizing device 6 comprises an extruder housing 7 and an extruder screw 8, wherein one or more filling openings 20, 34, 35 can be formed on the extruder housing 7. From the first outlet opening 19, plastic material can be fed from the first housing 3 into the subsequent plasticizing device 6, in particular through a filling opening 20, 34, 35 in the extruder housing 7.
  • the extruder screw 8 extends along an extruder longitudinal axis 9, and the extruder screw 8 is rotatably mounted in the extruder housing 7.
  • the plasticizing device 6 is arranged downstream of the first processing unit 2 and the second processing unit 10, viewed in the conveying direction.
  • the first processing unit 2 is fluidly connected to the plasticizing device 6, preferably via the first outlet opening 19 to the filling opening 20, 34, 35.
  • the second processing unit 10 is fluidly connected to the plasticizing device 6, preferably via the second outlet opening 21 to the filling opening 20, 34, 35 or another filling opening 20, 34, 35.
  • the plasticizing device 6 can be fed as required and preferably directly by means of the first processing unit 2 and/or by means of the second processing unit 10.
  • a processing plant 1 for plastic material in particular for processing thermoplastic material for its recycling, is shown in a simplified manner and only in sections.
  • the processing plant 1 is usually set up on a flat, preferably horizontally aligned support surface, such as a hall floor.
  • such a processing plant 1 is used to firstly reduce the plastic material, which usually has a larger dimension or is large in volume, in a processing unit 2, 10 to a correspondingly smaller piece size to form a piece of material that can be further processed in this size and then to melt it in a plasticizing device 6.
  • the plastic material to be reduced can be formed by larger piece goods in a wide variety of dimensions and sizes, films, strips or even already pre-reduced pieces.
  • the melt stream melted by the plasticizing device 6 and emerging from it can be cooled after it has been shaped and granulated for later processing.
  • Plastic material is to be subjected to further processing and/or appropriate shaping.
  • the shaping that follows immediately can be carried out in a continuous or discontinuous extrusion process or an injection molding process, whereby the heat contained in the melt does not have to be removed first and then added again later. Additional processing, cleaning or the addition of additives is also possible.
  • the first processing unit 2 can be arranged downstream of a first feed device (not shown) viewed in the conveying direction, the first feed device being flow-connected to the first processing unit 2, and the second processing unit 10 can be arranged downstream of a second feed device (also not shown) viewed in the conveying direction, the second feed device being flow-connected to the second processing unit 10. It is also conceivable for the two processing units 2, 10 to be flow-connected by means of a single, common feed device and to be supplied with material by means of this. However, each processing unit 2, 10 is preferably preceded by a feed device which serves in a known manner to collect the plastic material to be processed and/or processed and to feed it to the processing unit 2, 10.
  • the supply can be carried out automatically by its own weight and/or by means of an additional feed device, which moves the plastic material that has not yet been shredded to the processing unit 2, 10.
  • a feed shaft is used to receive the plastic material to be processed and/or reprocessed, by means of which it is forwarded to the processing unit 2, 10.
  • a first comminution device 15 can be formed on the first shaft body 4 and/or a second comminution device 16 can be formed on the second shaft body 12.
  • a first conveying device 22 can be formed on the first shaft body 4 and/or a second conveying device 23 can be formed on the second shaft body 12.
  • the processing units 2, 10 can therefore each comprise a comminution device 15, 16 and a conveying device 22, 23, wherein the comminution device 15, 16 and/or the conveying device 22, 23 is/are preferably accommodated and rotatably mounted in a preferably tubular or hollow cylindrical housing 3, 11.
  • the mostly rotary drive 14 can be implemented with at least one first drive means (not specified in more detail), such as an electric motor, optionally with the interposition of a gear or the like.
  • the conveying device 22, 23 serves to convey the plastic material previously shredded by the shredding device 15, 16 in the conveying direction according to the arrow to a transfer area between the processing units 2, 10 and the plasticizing device 6, which will be described in more detail later.
  • the plastic material which has a piece size that can be further processed, is transferred from the conveying device 22, 23 to the plasticizing device 6 arranged downstream.
  • the transfer area is arranged on the side of the conveying device 22, 23 facing away from the shredding device 15, 16 and thus forms the end of the conveying path of the processing unit 2, 10.
  • the preferably helical conveying device 22, 23 is arranged downstream of the shredding device 15, 16 as seen in the conveying direction.
  • the conveying device 22, 23 forms a first conveying section and also defines a longitudinal axis 5, 13.
  • the conveying direction is illustrated with an arrow, with further transport taking place in the axial direction.
  • the first conveying section viewed in the conveying direction, is directly connected to a shredding section defined by the shredding device 15, 16.
  • the longitudinal axis 5, 13 preferably has an alignment that runs parallel to it.
  • the longitudinal axis 5, 13 therefore has a lying, horizontal alignment.
  • At least the conveying device 22, 23 and possibly also the comminution device 15, 16 are formed by a central shaft body 4, 12 and/or are formed or arranged on the shaft body 4, 12.
  • at least one helical or spiral-shaped first A screw flight is provided to form the conveying device 22, 23.
  • the circumferential longitudinal course of the screw flight can also be described as helical or screw-shaped.
  • the crushing device 15, 16 can be formed by unspecified cutting blades which are arranged or formed on the shaft body 4, 12.
  • the shaft body 4, 12 can in turn also be tubular and supported on a bearing axis in its interior and/or mounted rotatably on this.
  • the drive means described above is in a drive connection with the shaft body 4, 12.
  • Motors or drives 14 and bearings 27 are shown in the figures with the usual symbols. These can be identical in construction, but can also be different. It is possible that a single common drive 14 is designed to drive the first shaft body 4 and the second shaft body 12. This variant is not shown in more detail. It is also possible that one drive 14 is designed to drive the first shaft body 4 and another drive 14 is designed to drive the second shaft body 12. In addition, a drive 14 is usually designed to drive the plasticizing device 6.
  • the figures each show embodiments of processing plants 1 in which the first longitudinal axis 5 is arranged orthogonally to the extruder longitudinal axis 9, and/or wherein the second longitudinal axis 13 is arranged orthogonally, i.e. at an angle of 90°, to the extruder longitudinal axis 9.
  • Fig. 1 to 3 each show embodiments of processing systems 1 in which the first longitudinal axis 5 and the second longitudinal axis 13 are coaxial.
  • the representations in Figs. 1, 3, 4, 5, 6, 9, and 14 are each a top view of the system, with the housings 3, 11 of at least two processing units 2, 10 and the extruder housing 7 of the plasticizing device 6 being at least partially cut radially so that the shaft bodies 4, 12 and the extruder screw 8 arranged therein can be seen.
  • one of the two shaft bodies 4, 12 is also shown in radial section so that its design as a hollow shaft can be seen. This variant will be discussed in more detail below.
  • Fig. 1 to 3 each show embodiments of processing systems 1 in which the first longitudinal axis 5 and the second longitudinal axis 13 are coaxial.
  • the representations in Figs. 1, 3, 4, 5, 6, 9, and 14 are each a top view of the system, with the housings 3, 11 of at least two processing units 2, 10 and the extruder housing 7 of the plasticizing device 6 being
  • FIG. 7 is a sectional view with a vertical section through the middle of the processing units 2, 10 in frontal view with a view axially along the extruder longitudinal axis 9.
  • Fig. 8 is the sectional view of the section line VIII - VIII sketched in Fig. 9 and corresponds to a view from the side with Viewing direction axially along the two longitudinal axes 5, 13 of the shaft bodies 4, 12.
  • Fig. 10 is also a view from the side looking axially along the two longitudinal axes 5, 13 of the shaft bodies 4, 12.
  • Fig. 11 and Fig. 12 are each sectional views along the section line XI - XI in Fig. 10 and in the variant shown correspond to an oblique view or oblique position of less than 45°.
  • Fig. 11 and Fig. 12 are each sectional views along the section line XI - XI in Fig. 10 and in the variant shown correspond to an oblique view or oblique position of less than 45°.
  • first shaft body 4 and the second shaft body 12 can be designed to rotate independently of one another. This is the case in both the example according to Fig. 1 and Fig. 3.
  • the two shaft bodies 4, 12 are arranged opposite one another, with a common outlet opening 19, 21 being arranged in the area of the axial ends of the shaft bodies 4, 12 facing one another.
  • the two coaxial shaft bodies 4, 12 are arranged in a common, continuous housing 3, 11.
  • a filling opening 20 of the plasticizing device 6 can be arranged below the common outlet opening 19, 21 so that processed material can reach the plasticizing device 6.
  • Fig. 3 shows an embodiment in which the second shaft body 12 is designed as a hollow shaft, with the first shaft body 4 being arranged at least partially within the second shaft body 12.
  • the first shaft body 4 is designed with a long extension 24 on the axial end facing the second shaft body 12.
  • the second shaft body 12 is designed with an axial opening 26, which opening 26 extends from one axial end to the other axial end of the shaft body 12.
  • the extension 24 of the first shaft body 4 is arranged completely within the opening 26 in the second shaft body 12 and is mounted therein so as to be axially freely floating and rotatable.
  • the first shaft body 4 has a bearing 27 on its other axial end.
  • the second processing unit 10 is fluidly connected to a second filling opening 34 in the extruder housing 7 of the plasticizing device 6 by means of a second outlet opening 21 in the second housing 11, wherein the second outlet opening 21 is arranged on the top of the second housing 11 and the second filling opening 34 is arranged on the underside of the extruder housing 7.
  • the material is transferred to the plasticizing device 6 at the same axial position of the extruder's longitudinal axis 9.
  • This is particularly useful when the two processing units 2, 10 are arranged opposite one another, as shown in Fig. 7.
  • this enables the two processing units 2, 10 to be arranged opposite one another and to operate independently of one another, without a continuous shaft or without a shaft-in-shaft bearing of the two processing units 2, 10.
  • FIG. 8 A further embodiment of a processing plant 1 is shown in Figs. 8 to 12 in various views and sectional representations.
  • Figs. 8 and 10 are each side views
  • Fig. 9 is a top view
  • Figs. 11 and 12 are each oblique views according to the section line XI - XI in Fig. 10.
  • Control device first outlet opening first filling opening second outlet opening first conveying device second conveying device

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Abstract

L'invention concerne une installation de traitement de matière plastique ainsi qu'un procédé de traitement de matière plastique, notamment de traitement de matière thermoplastique pour son recyclage. L'installation de traitement (1) comprend une première unité de traitement (2) et une deuxième unité de traitement (10) ainsi qu'un dispositif de plastification (6). Le dispositif de plastification (6) est disposé en aval de la première unité de traitement (2) et de la deuxième unité de traitement (10), vu dans la direction de transport. La première unité de traitement (2) est en communication fluidique avec le dispositif de plastification (6) et la deuxième unité de traitement (10) est également en communication fluidique avec le dispositif de plastification (6). Le dispositif de plastification (6) peut au besoin être alimenté au moyen de la première unité de traitement (2) et/ou au moyen de la deuxième unité de traitement (10).
PCT/AT2024/060295 2023-08-01 2024-08-01 Installation de traitement de matière plastique Pending WO2025024879A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATA50616/2023 2023-08-01
ATA50616/2023A AT527439A1 (de) 2023-08-01 2023-08-01 Aufbereitungsanlage für Kunststoffmaterial

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WO2025024879A1 true WO2025024879A1 (fr) 2025-02-06

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1301959A (fr) * 1961-07-12 1962-08-24 Dispositif homogénéiseur indépendant pour matières thermoplastiques ou autres
US4344579A (en) * 1976-09-03 1982-08-17 Kabushiki Kaisha Meiki Seisakusho Apparatus for reclaiming and recycling thermosetting scrap
JPH0768625A (ja) * 1993-08-31 1995-03-14 Ikegai Corp 押出成形機
WO1998016360A1 (fr) 1996-10-14 1998-04-23 Gerold Barth Dispositif de transformation pour broyer, transporter et plastifier une matiere thermoplastique
WO2006007610A1 (fr) * 2004-07-16 2006-01-26 Erema Engineering Recycling Maschinen Und Anlagen Gesellschaft M.B.H. Dispositif et procede de traitement de matiere plastique thermoplastique a recycler
AT522051A1 (de) 2018-12-19 2020-07-15 Next Generation Recyclingmaschinen Gmbh Aufbereitungsanlage sowie Verfahren zur Aufbereitung von Kunststoffmaterial für dessen Wiederverwertung
CN212764191U (zh) * 2020-07-31 2021-03-23 深圳市吉塑工程塑料有限公司 一种混炼造粒机组的切粒装置
US20230001621A1 (en) * 2019-10-16 2023-01-05 Pureloop Gesmbh Device for processing material, in particular plastics material

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1301959A (fr) * 1961-07-12 1962-08-24 Dispositif homogénéiseur indépendant pour matières thermoplastiques ou autres
US4344579A (en) * 1976-09-03 1982-08-17 Kabushiki Kaisha Meiki Seisakusho Apparatus for reclaiming and recycling thermosetting scrap
JPH0768625A (ja) * 1993-08-31 1995-03-14 Ikegai Corp 押出成形機
WO1998016360A1 (fr) 1996-10-14 1998-04-23 Gerold Barth Dispositif de transformation pour broyer, transporter et plastifier une matiere thermoplastique
EP0934144B1 (fr) 1996-10-14 2004-04-07 Gerold Barth Dispositif de transformation pour broyer, transporter et plastifier une matiere thermoplastique
WO2006007610A1 (fr) * 2004-07-16 2006-01-26 Erema Engineering Recycling Maschinen Und Anlagen Gesellschaft M.B.H. Dispositif et procede de traitement de matiere plastique thermoplastique a recycler
AT522051A1 (de) 2018-12-19 2020-07-15 Next Generation Recyclingmaschinen Gmbh Aufbereitungsanlage sowie Verfahren zur Aufbereitung von Kunststoffmaterial für dessen Wiederverwertung
AT522051B1 (de) 2018-12-19 2021-04-15 Next Generation Recyclingmaschinen Gmbh Aufbereitungsanlage sowie Verfahren zur Aufbereitung von Kunststoffmaterial für dessen Wiederverwertung
US20230001621A1 (en) * 2019-10-16 2023-01-05 Pureloop Gesmbh Device for processing material, in particular plastics material
CN212764191U (zh) * 2020-07-31 2021-03-23 深圳市吉塑工程塑料有限公司 一种混炼造粒机组的切粒装置

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