EP3529031A1 - Cylindre pour machine de transformation de matière plastique et procédé pour faire fonctionner une extrudeuse - Google Patents

Cylindre pour machine de transformation de matière plastique et procédé pour faire fonctionner une extrudeuse

Info

Publication number
EP3529031A1
EP3529031A1 EP17768104.6A EP17768104A EP3529031A1 EP 3529031 A1 EP3529031 A1 EP 3529031A1 EP 17768104 A EP17768104 A EP 17768104A EP 3529031 A1 EP3529031 A1 EP 3529031A1
Authority
EP
European Patent Office
Prior art keywords
cylinder body
hollow cylinder
hollow
extruder
cylinder
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.)
Withdrawn
Application number
EP17768104.6A
Other languages
German (de)
English (en)
Inventor
Hans-Peter Schneider
Robert Breitenberger
Walter Breuning
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.)
KraussMaffei Technologies GmbH
Original Assignee
KraussMaffei Technologies 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 KraussMaffei Technologies GmbH filed Critical KraussMaffei Technologies GmbH
Publication of EP3529031A1 publication Critical patent/EP3529031A1/fr
Withdrawn legal-status Critical Current

Links

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
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/68—Barrels or cylinders
    • B29C48/682—Barrels or cylinders for twin screws
    • 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
    • B29C48/256—Exchangeable extruder parts
    • B29C48/2568—Inserts
    • B29C48/25684—Inserts for 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
    • B29C48/395—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
    • B29C48/40—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 using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
    • 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
    • B29C48/40—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 using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
    • B29C48/402—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 using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders the screws having intermeshing parts
    • 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
    • B29C48/40—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 using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
    • B29C48/405—Intermeshing co-rotating screws
    • 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
    • B29C48/40—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 using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
    • B29C48/41—Intermeshing counter-rotating screws
    • 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
    • B29C48/252—Drive or actuation means; Transmission means; Screw supporting means
    • B29C48/2526—Direct drives or gear boxes
    • 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
    • B29C48/256—Exchangeable extruder parts
    • B29C48/2565—Barrel parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/505—Screws
    • B29C48/507—Screws characterised by the material or their manufacturing process
    • B29C48/509—Materials, coating or lining therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/68—Barrels or cylinders
    • B29C48/6803—Materials, coating or lining therefor

Definitions

  • the invention relates to a cylinder, in particular a plasticizing, for a plastic processing machine.
  • the invention further relates to an apparatus for processing a material, for example plastic, rubber or the like, with a multi-screw extruder, in particular a twin-screw extruder, wherein the extruder has at least two screws for processing the material, wherein the screws rotatably mounted in a cylinder and by means of at least one Drive are driven.
  • the invention relates to a method for operating an extruder.
  • extruders for processing a material with an extruder have been known in practice for a long time. Such extruders are used for the processing of material, for example for the plasticization or melting of plastic or rubber, but also in the food industry. Two-screw or multi-screw extruders are particularly well suited for the melting or plasticization of material.
  • the screws are the same or in opposite directions rotatably mounted in a housing with respect. Cylinder, wherein the screws are driven by a drive. The direction of rotation of the screws is predetermined by the course of the screw flights and the discharge direction of the material to be processed.
  • twin-screw extruders are often used, since the requirements placed on the extruder here, are met by these machines particularly well.
  • counter-rotating, intermeshing (eg tightly combing) twin-screw extruders are often preferred in practice.
  • Another advantage of the counter-rotating twin screw extruder is the self-cleaning, which is characterized by the Forced promotion results.
  • Other devices such as co-rotating twin screw extruders, cascade extruders and planetary roller extruders or the like are also advantageous for similar or other processing tasks.
  • DE 39 35 970 A1 discloses an extruder with an extrusion cylinder, which consists of a steel shell and in these cans made of hard metal or similar materials. If now adhesive wear occurs, then these cans are easily replaced.
  • EP 1 336 465 A1 Another possibility is described in EP 1 336 465 A1, in which the inner wall of the plasticizing cylinder is provided with a wear protection layer, wherein axially extending grooves are formed in the inner coating.
  • the cylinders are exposed to high stresses, which despite wear-reducing measures, such as in the State of the art are described, resulting in a significant reduction in the service life of the cylinder and the device.
  • Another disadvantage is that the extruder housing, if any, can only be provided with a specific wear protection layer. For different types of wear, however, different protective layers are required.
  • damaged by wear housing usually have to be replaced with a new housing. When worn so always the entire component must be changed. This exchange is associated with high investment costs.
  • the present invention is therefore an object of the invention to provide a cylinder for a plastic processing machine and a device for processing a material of the type mentioned above and a method for operating an extruder, which allows the most cost-effective extension of the service life of the cylinder and thus the device becomes.
  • the above object is achieved by a cylinder for a plastic processing machine having the features of claim 1.
  • the cylinder has at least two hollow cylinder bodies, wherein at least one hollow cylinder body is provided at least in one section with an inner coating, in particular a wear protection layer, and can be attached to the other hollow cylinder body, wherein the one hollow cylinder body in several different positions on the other hollow cylinder body is attachable ,
  • the cylinder or extruder cylinder can thus be designed in several parts.
  • the cylinder may have a plurality of cylinder segments in the form of hollow cylinder bodies.
  • the cylinder may be formed in two parts.
  • the cylinder may therefore comprise a first hollow cylinder body and a second hollow cylinder body.
  • the first hollow cylinder body may be separated from the hollow cylinder body.
  • the cylinder may alternatively have more than two, for example, three, four, five or six hollow cylinder body.
  • not only measures of wear protection on the screws or the housing can increase the service life of the housing, but that an increase in service life can be achieved in that the cylinder at different Worn areas.
  • This is technically achieved in a particularly simple and sophisticated manner in that the cylinder is designed in several parts, preferably in two parts, and at least one of the resulting hollow cylinder body is provided at least in one section with a wear protection layer.
  • the cylinder can thus be used again with his / her hardly or hardly occlusive location (s). This extends the service life and the service life of the machine is significantly increased. Likewise, no further investment costs, e.g. for a new cylinder or housing.
  • the hollow cylinder body of the cylinder provided with the inner coating may be fastened or mounted in a plurality of positions, for example two, on the other hollow cylindrical body of the cylinder.
  • the one hollow cylinder body can be attached to the other hollow cylinder body relative to an original position in a rotated by 180 °, 120 °, 90 ° or 45 ° position.
  • the Originating position is the position of the hollow cylinder body in which it has been attached to the other hollow cylinder body for the first or previous time.
  • the hollow cylinder body may be configured to be rotatable / rotatable about an angle defined by the cylinder and / or an extruder, depending on the configuration of the cylinder and / or an extruder, about an axis (for example the longitudinal axis) of the cylinder.
  • the one hollow cylinder body can be detachably attached to the other hollow cylinder body.
  • the hollow cylinder body can be screwed together.
  • the hollow cylinder body may each have at least two mutually parallel longitudinal bores, which overlap to form a spectacle bore.
  • hollow cylinder body may have three, four, five or more parallel longitudinal bores.
  • the hollow cylinder body may be attached to each other so that the longitudinal axes of their holes are congruent to each other.
  • the cylinder can thus have two or more mutually parallel longitudinal bores.
  • the inner coating may be formed substantially in the gusset region of the eyeglass bore. Alternatively or additionally, the inner coating may be formed in a region of an angle plane of approximately 45 ° to an axial plane of the hollow cylinder body or cylinder. Alternatively, the inner coating may extend over the entire inner surface of the hollow cylinder body.
  • the hollow cylinder body may have one or more inner coatings. The inner coatings can be arranged in sections on the hollow cylinder body.
  • the other hollow cylinder body may be provided at least in one section with an inner coating, in particular a wear protection layer. It is also possible for all hollow cylinder bodies of the cylinder to be provided with an inner coating at least in one section be. Preferably, however, only the hollow cylinder body of the cylinder are provided with an inner coating, which are arranged in zones of greatest wear.
  • the inner coating of the one hollow cylinder body may be different from the inner coating of the other hollow cylinder body or the other hollow cylinder body. It is also conceivable that selected hollow cylinder body have mutually different wear protection layers. Due to the separable design of the cylinder different wear protection layers can be realized in the respective zones of the hollow cylinder body. In a variant, the inner wall of a hollow cylindrical body may have different inner coatings. This has the advantage that the wear protection layers can be adapted to the respective requirements and different wear conditions.
  • the inner coating or wear protection layer may comprise an alloy, preferably metal alloy, ceramic and / or bimetal, preferably tungsten carbide, or any combination thereof. Additionally or alternatively, the inner coating may be made by curing, for example, inductive hardening.
  • an apparatus for processing a material for example plastic, rubber or the like, with a multi-screw extruder, in particular a twin-screw extruder is specified, wherein the extruder has at least two screws for processing the material, wherein the screws rotatable in a as above and / or cylinders described below are stored and driven by at least one drive.
  • the worm (s) can have an outer coating, in particular a wear-resistant coating, at least in one section.
  • the outer coating on the worm (s) may be in the range of Be provided inside coating of the cylinder or the hollow cylinder body. That is, the outer coating may be provided on the worm (s) in the region where, opposite to the worm, the inner coating portion of the cylinder or hollow cylindrical body is provided.
  • the screw (s) may also have an outer coating which extends over the part of the screw which is located inside the hollow cylinder body, in particular the hollow cylinder body with an inner coating. Alternatively, the outer coating may extend over the entire screw length.
  • the screw (s) may have one or more external coatings.
  • the outer coating can be designed as a wear protection layer which is adequate or corresponding to the inner coating of the cylinder.
  • the outer coating of the screw (s) may comprise an alloy, preferably metal alloy, ceramic, molybdenum and / or bimetal, preferably tungsten carbide, or any combination thereof.
  • the screw (s) may have one or more external coatings.
  • the screw (s) may have two outer coatings. These two outer coatings may be, for example, molybdenum and tungsten carbide.
  • the multi-screw extruder can be designed as an opposite or in the same direction rotating extruder.
  • the drive may comprise an operable in two directions of rotation motor.
  • the extruder could be designed as a counter-rotating or counter-rotating twin-screw extruder with a meshing, preferably tightly intermeshing, screw profile.
  • any other type of extruder for example single-screw extruder, cascade or planetary roller extruder or the like could be conceivable.
  • the choice of the right extruder depends on the process task.
  • the screws could, for example, be designed as parallel screws or as conical screws.
  • a method of operating an extruder having at least two screws is provided.
  • the method according to the invention could be used, in particular, for operating a device according to the above and / or below embodiments, wherein a hollow cylinder body of the cylinder is mounted in a different position relative to its original position.
  • the service life of the cylinder can be significantly increased by the possibility of the subsequent different attachment of the hollow cylinder body of the cylinder to the other hollow cylinder body of the cylinder.
  • This operating point can be chosen differently depending on the process task. For example, the operating point could be selected such that the wear occurring is still so slight that it does not lead to any significant damage to the cylinder, the screws and / or the product in the wear area.
  • the operating point could also be chosen so that the wear and the resulting damage to a usability of the product.
  • the operating time could thus be determined by the type of housing and / or the judge the processed material.
  • the operating time could be selected depending on the wear of the cylinder inner wall and / or the screws and / or the sensitivity of the material and / or product.
  • the operating point at which production is stopped could therefore be calculated partly for materials to be processed or determined from empirical values. However, the operating point could be determined at least from the quality of the extruded product.
  • FIG. 1 in a partially sectioned side view of an embodiment of a
  • FIG. 2 shows a partially sectioned side view of an exemplary embodiment of a two-part cylinder with the hollow cylinder body according to FIG. 1 and a further hollow cylinder body;
  • FIG. 1 an embodiment of a hollow cylinder body 10 is shown in a partially sectioned side view.
  • the longitudinal axis 12 is an axis of rotation of the hollow cylinder body 10.
  • the longitudinal axis 12 extends in the process direction of the hollow cylinder body 19.
  • the hollow cylinder body 10 has two ends 14. The ends 14 of the hollow cylinder body 10 thus form opposite side surfaces.
  • the hollow cylinder body 12 has a substantially in the vertical direction to the longitudinal axis 12 of the hollow cylinder body 10 extending projection 1 6.
  • the projection 1 6 is formed in the present embodiment as a flange 16.
  • the flange 1 6 is integrally formed with the hollow cylinder body 10 and therefore forms a flange portion 1 6 of the hollow cylindrical body 10.
  • the flange portion 16 may have a round, but preferably, as in the present embodiment, also a rectangular cross-section.
  • the cross section of the flange 16 extends in a plane which is substantially perpendicular or transverse to the longitudinal axis 12 of the hollow cylinder body 10.
  • the cross sections of the two flange sections may have the same or, as in the present exemplary embodiment, a different size cross-sectional area.
  • the flange portion or flange 1 6 has one or more holes 18.
  • the holes 18 may be designed as through holes or blind holes.
  • Holes 18 of the flange 1 6, as in the present embodiment, have an internal thread.
  • the holes 18 may thus be formed as threaded holes 18.
  • the hollow cylinder body 10 can be attached to another hollow cylinder body and preferably screwed thereto by means of screws or pins (shown in Fig. 2).
  • the flange portion 1 6 recesses 20, for example in the form of a hexagon have. Other forms, such as triangle, square and round are also conceivable.
  • the recesses 20 may also be configured as a bore.
  • the recesses 20 may be attached only to one of the two flange portions 16 (in Fig. 1 at the right flange portion) or at both flange portions 16 (not shown in Fig. 1).
  • the flange sections 1 6 can additionally or alternatively have bores 22, preferably blind bores 22. These blind bores 22 can also be attached to only one of the two flange sections 16 (in FIG. 1 on the left flange section) or on both flange sections 16 (not shown in FIG. 1).
  • the two flange portions 1 6 can thus be configured similar or equal.
  • the holes 18, recesses 20 and / or the blind bores 22 extend substantially in a direction parallel to the longitudinal axis 12 of the hollow cylinder body 10th
  • the hollow cylinder body 10 has two parallel longitudinal bores 24, which extend substantially in the direction of the longitudinal axis 12 of the hollow cylinder body 10.
  • the longitudinal bores 24 and the formation of a spectacle bore 24 are superimposed.
  • the eyeglass bore 24 defines an inner surface 26 of the hollow cylinder body 10.
  • the hollow cylinder body 10 depending on the application only a longitudinal bore 24 or more, for example, three, four or five longitudinal holes 24 have, in the latter case, the longitudinal holes 24 can pass at least in pairs.
  • the hollow cylinder body 10 has an inner coating 28 at least in one section.
  • the inner coating 28 at least in one section.
  • the inner coating 28 may be formed only in sections on the inner surface 26 of the hollow cylinder body 10.
  • the inner coating 28 is formed substantially in the gusset region of the eyeglass bore 24 of the hollow cylinder body 10.
  • the inner coating 28 is in particular a wear protection layer 28.
  • the wear protection layer 28 is preferably made of a wear-resistant material.
  • the wear protection layer 28 may comprise, for example, an alloy, preferably metal alloy, ceramic, and / or bimetal, preferably tungsten carbide, or a combination thereof.
  • the wear protection layer 28 may be made by curing, for example, inductive hardening.
  • the wear protection layer 28 is formed of tungsten carbide.
  • Fig. 2 shows a partially sectioned side view of an embodiment of a two-part cylinder 30 with the hollow cylinder body 10 of FIG. 1 and another hollow cylinder body 32.
  • it can also several, e.g. three, four, five, etc. hollow cylinder body 10 and / or hollow cylinder body 32 form a cylinder 20.
  • the hollow cylinder body 32 essentially corresponds to the hollow cylinder body 10.
  • the hollow cylinder body 32 thus essentially has the features described with reference to the hollow cylinder body 10 and shown in FIG.
  • a difference between the hollow cylinder body 32 and the hollow cylinder body 10 is that in the present embodiment, the hollow cylinder body 32 has no inner coating 28.
  • the hollow cylinder body 32 may have an inner coating 28 at least in one section, preferably on the inner surface 26 of its longitudinal bore (s) 24.
  • the hollow cylinder body 32 may have an inner coating in the form of a wear protection layer 28 on its entire inner surface 26.
  • the inner coating 28 of the hollow cylinder body 10 may be different from the inner coating 28 of the hollow cylinder body 32.
  • the inner coating 28 may thus be adapted to the respective process zone of the cylinder 30.
  • inner coating 28 may alternatively be formed the same at the hollow cylinder body 10, 32.
  • the hollow cylinder body 10 is attached to the other hollow cylinder body 32, wherein the hollow cylinder body 10 is attachable to the other hollow cylinder body 32 in a plurality of different positions.
  • the hollow cylinder body 10 is detachably attached to the other hollow cylinder body 32 in the present embodiment.
  • the two hollow cylindrical body 10 and 32 are screwed together by means of screws 34.
  • the hollow cylinder body 10, 32 by means of pins, threaded rods, lock screws, etc. are interconnected. In Fig. 2 this is exemplified with grub screws 36.
  • the hollow cylinder body 10, 32 are attached by means of their flange portions 1 6 together.
  • the eyeglass bore 24 of the hollow cylinder body 10 are aligned with the eyeglass bore 24 of the hollow cylinder body 32 in the longitudinal direction along the longitudinal axis 12 congruent.
  • the longitudinal axes of the eyeglass holes 24 are thus formed congruent to each other.
  • the hollow cylinder body 10 can be disassembled again.
  • the hollow cylinder body 10 by means of screws 34 and pins 36 are released from the hollow cylinder body 32 again.
  • the hollow cylinder body 10 is thus relative to its original position (ie, to its originally mounted position) in an example 180 °, 120 °, 90 ° or 45 ° twisted position on the other hollow cylinder body 32 attachable.
  • the hollow cylinder body 10 can be rotated about its longitudinal axis 12 and then be attached to the other hollow cylinder body 32 again.
  • the hollow cylinder body 10 can also be rotated about an axis perpendicular to the longitudinal axis 1 2 axis.
  • This vertical axis is preferably in the horizontal plane of the hollow cylinder body 10.
  • a rotation of the hollow cylinder body 10 by 180 ° about the longitudinal axis 12 and / or about the longitudinal axis 12 vertical axis of the hollow cylinder body 10.
  • the hollow cylinder body 10 may be configured to be rotatable / rotatable around an axis of the cylinder 30 for any desired and / or depending on the configuration of the cylinder 30 and / or an extruder angle.
  • the hollow cylinder body 10 can thus be mounted in two or more positions on another hollow cylinder body.
  • FIG. 3a and 3b is a sectional, schematic view of an embodiment of a device 38 for processing a material, in this case plastic, with the cylinder 30 shown in FIG. 2.
  • the device comprises an extruder, wherein the extruder is designed as a multi-screw extruder.
  • the extruder is a twin-screw extruder.
  • the extruder has two screws 40 for plasticizing plastic. The screws are rotatably mounted in the cylinder 30. As shown in Figs. 3a and 3b, the screws are stored in the eyeglass bore 24 of the cylinder 30.
  • the screws 40 may have an outer coating, in particular a wear protection layer, at least in one section.
  • the outer coating on the screws 40 may be provided in the region of the inner coating 28 of the cylinder 30 or the hollow cylinder body 10. That is, the outer coating may be provided on the screws 40 in the region where, opposite to the screw 40, the region of the inner coating 28 of the cylinder 30 or hollow cylinder body 10 is provided.
  • the outer coating can be designed as a wear protection layer that is adequate or corresponding to the inner coating 28 of the cylinder 30.
  • the outer coating of the screws 40 may comprise an alloy, preferably metal alloy, ceramic, molybdenum and / or bimetal, preferably tungsten carbide, or any combination thereof.
  • the screws 40 may have one or more external coatings.
  • the screws may have two outer coatings. These two outer coatings may be, for example, molybdenum and tungsten carbide.
  • the screws 40 have an outer coating which extends over the part of the screw, the is within the hollow cylinder body 10, wherein the outer coating is formed as the inner coating 28 of the hollow cylinder body 10 adequate wear protection layer and tungsten carbide.
  • the screws 40 are driven by means of a drive, not shown.
  • the drive comprises an operable in two directions of rotation motor.
  • the drive may comprise a transmission and / or transmission elements in the form of coupling elements.
  • the extruder can be configured as an opposing or co-rotating extruder.
  • the extruder is designed as a meshing (here sealingly combing) counter-rotating (indicated by the arrows in Figures 3a and 3b) twin-screw extruder.
  • the drive drives the first worm 40 (in Figs. 3a and 3b the left worm) counterclockwise and the second worm 40 (in Figs. 3a and 3b the right worm) in a clockwise direction. It is also conceivable, however, a reverse sense of rotation of the screws.
  • Fig. 3a the direction of rotation of the individual screws 40 and the acting pressing forces F are shown.
  • the screws 40 act on the cylinder 30 and thus on the hollow cylinder body 10.
  • Wear occurs in particular on the hollow cylinder body 10 in the range from about 9:00 to 11:00 and 13:00 to 15:00; schematically represented by the thickened circular arcs 42.
  • the cylinder wear occurs as shown in Fig. 3a on the wear protection layer 28 on.
  • the hollow cylinder body 10 is not directly damaged.
  • the cylinder 30 and / or the screws 40 is stopped after a certain period of operation, in which the occurring cylinder wear 42 is still so low that it still leads to no significant damage to the product, the cylinder 30 and / or the screws 40.
  • the hollow cylinder body 10 of the extruder cylinder 30 is mounted in a different position relative to its original position.
  • the hollow cylinder body 10 is first released by means of the screws 34 of the hollow cylinder body 32.
  • the Hohizylinderkorper 10 is rotated by 180 ° about its longitudinal axis 12.
  • the Hohizylinderkorper 10 is in this position again attached to the Hohizylinderkorper 32 or screwed.
  • the Hohizylinderkorper 10 was thus from its original position (as shown in Fig. 3a) in a different position (here rotated by 180 °) attached to the other Hohizylinderkorper 32 (as shown in Fig. 3b.).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

L'invention concerne un cylindre (30) pour une machine (38) de transformation de matière plastique. Le cylindre comprend au moins deux corps creux (10, 32), au moins un corps creux (10) du cylindre étant pourvu, au moins dans une partie, d'un revêtement intérieur (28), en particulier d'une couche de protection contre l'usure (28), et pouvant être appliqué sur l'autre corps creux (32) du cylindre, l'un des corps creux (10) du cylindre pouvant être appliqué sur l'autre corps creux (32) du cylindre dans plusieurs positions différentes. L'invention concerne en outre un dispositif (38) de transformation d'un matériau et un procédé permettant de faire fonctionner une extrudeuse (38).
EP17768104.6A 2016-10-18 2017-09-14 Cylindre pour machine de transformation de matière plastique et procédé pour faire fonctionner une extrudeuse Withdrawn EP3529031A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016119858.7A DE102016119858A1 (de) 2016-10-18 2016-10-18 Zylinder für eine Kunststoff verarbeitende Maschine
PCT/EP2017/073103 WO2018072935A1 (fr) 2016-10-18 2017-09-14 Cylindre pour machine de transformation de matière plastique et procédé pour faire fonctionner une extrudeuse

Publications (1)

Publication Number Publication Date
EP3529031A1 true EP3529031A1 (fr) 2019-08-28

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Application Number Title Priority Date Filing Date
EP17768104.6A Withdrawn EP3529031A1 (fr) 2016-10-18 2017-09-14 Cylindre pour machine de transformation de matière plastique et procédé pour faire fonctionner une extrudeuse

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Country Link
US (1) US20210283816A1 (fr)
EP (1) EP3529031A1 (fr)
CN (1) CN109803806A (fr)
DE (1) DE102016119858A1 (fr)
WO (1) WO2018072935A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110539469B (zh) * 2019-09-03 2021-11-05 莱斯特瑞兹机械(太仓)有限公司 组合式挤出机机筒及其装配方法

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2423785C2 (de) * 1974-05-16 1980-06-12 Werner & Pfleiderer, 7000 Stuttgart Verschleißeinsatz für das Schneckengehäuse einer Doppelschneckenstrangpresse oder -Spritzgießmaschine
DE3506726A1 (de) * 1985-02-26 1986-08-28 Reifenhäuser GmbH & Co Maschinenfabrik, 5210 Troisdorf Verschleisswiderstandserhoehende beschichtung am zylinder und an der schnecke einer kunststoff-schneckenpresse
DE3935970A1 (de) 1989-10-28 1991-05-02 Saar Hartmetall & Werkzeuge Extrusionszylinder
JPH05220818A (ja) * 1992-02-08 1993-08-31 Matsui Mfg Co 単軸押出機
JPH0588928U (ja) * 1992-05-22 1993-12-03 株式会社神戸製鋼所 押出機のバレル接続装置
JPH07266404A (ja) * 1994-03-31 1995-10-17 Japan Steel Works Ltd:The 押出機
DE10206169B4 (de) 2002-02-14 2004-01-29 Krauss-Maffei Kunststofftechnik Gmbh Verfahren zum Herstellen eines Plastifizierzylinders mit Innenbeschichtung
US7070404B2 (en) * 2002-10-25 2006-07-04 Macphee Daniel Joseph Computer-controlled compounding extrusion blending apparatus and method
DE10356356B4 (de) * 2003-08-06 2014-11-13 Battenfeld-Cincinnati Germany Gmbh Austauschbares Walzenteil
CN2707477Y (zh) * 2004-06-08 2005-07-06 上海新兆塑业有限公司 使用回收料生产挤塑保温板的挤出机
DE102004037978B4 (de) * 2004-08-05 2008-08-07 Kraussmaffei Technologies Gmbh Vorrichtung und Verfahren zur Verarbeitung eines Materials und Getriebe zur Verwendung in einer solchen Vorrichtung
AT504385B1 (de) * 2006-06-16 2014-03-15 Theysohn Extrusionstechnik Ges M B H Verfahren zur herstellung einer schnecke für einen extruder sowie schnecke
US20080267003A1 (en) * 2007-04-24 2008-10-30 Shashank Gulabchand Kasliwal Extrusion method and apparatus
US20090086568A1 (en) * 2007-09-28 2009-04-02 C.D.L. Technology, Inc. Continuous bi-metallic twin bore barrel for screw extruder and method of making same
CN102152464A (zh) * 2010-11-19 2011-08-17 北京化工大学 一种基于双螺棱推动输送的单螺杆挤出机

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CN109803806A (zh) 2019-05-24
WO2018072935A1 (fr) 2018-04-26
DE102016119858A1 (de) 2018-04-19
US20210283816A1 (en) 2021-09-16

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