WO2024083291A1 - Cylindre de rouleau, bague intermédiaire, extrudeuse à rouleaux planétaires et procédé - Google Patents

Cylindre de rouleau, bague intermédiaire, extrudeuse à rouleaux planétaires et procédé Download PDF

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Publication number
WO2024083291A1
WO2024083291A1 PCT/DE2023/200211 DE2023200211W WO2024083291A1 WO 2024083291 A1 WO2024083291 A1 WO 2024083291A1 DE 2023200211 W DE2023200211 W DE 2023200211W WO 2024083291 A1 WO2024083291 A1 WO 2024083291A1
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WO
WIPO (PCT)
Prior art keywords
roller
cylinder
toothed
cylinders
intermediate ring
Prior art date
Application number
PCT/DE2023/200211
Other languages
German (de)
English (en)
Inventor
Sebastian Rust
Original Assignee
Entex - Rust & Mitschke 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 Entex - Rust & Mitschke Gmbh filed Critical Entex - Rust & Mitschke Gmbh
Publication of WO2024083291A1 publication Critical patent/WO2024083291A1/fr

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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
    • B29C48/256—Exchangeable extruder parts
    • B29C48/2565—Barrel parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • 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
    • B29B7/485—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 with three or more shafts provided with 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
    • B29B7/34—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
    • B29B7/488—Parts, e.g. casings, sealings; Accessories, e.g. flow controlling or throttling devices
    • 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
    • B29C48/50—Details of extruders
    • B29C48/68—Barrels or cylinders
    • B29C48/683—Barrels or cylinders for more than two 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
    • B29C48/50—Details of extruders
    • B29C48/68—Barrels or cylinders
    • B29C48/685—Barrels or cylinders characterised by their inner surfaces, e.g. having grooves, projections or threads
    • B29C48/688—Barrels or cylinders characterised by their inner surfaces, e.g. having grooves, projections or threads having threads
    • 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
    • B29C48/435—Sub-screws
    • B29C48/44—Planetary 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
    • B29C48/50—Details of extruders
    • B29C48/68—Barrels or cylinders
    • B29C48/684—Barrels or cylinders having adaptable feed or discharge locations, e.g. for varying the amount of kneading by changing hopper position or discharge exit

Definitions

  • the present invention relates, inter alia, to a roller cylinder for a planetary roller extruder constructed from modules with a special favorable length, to transition elements between the roller cylinders in the form of toothed cylindrical intermediate rings or non-toothed cylindrical starting or dispersing rings, also with a special favorable length, to a planetary roller extruder constructed from modules comprising these components, and to a method for assembling such a planetary roller extruder.
  • the main types of extruders are single-screw extruders, twin-screw extruders and planetary roller extruders.
  • the planetary roller extruder allows particularly good thermal process control, which has opened up new fields of application in the plastics industry and other industries.
  • the mechanical principle of the planetary roller extruder corresponds to a 45° helical planetary gear with a fixed roller cylinder and floating planetary spindles that are driven by a central spindle so that they perform a rolling and orbiting movement in the direction of rotation of the central spindle when the central spindle rotates.
  • the planetary spindles are externally toothed and engage both the teeth of the central spindle and the teeth of the roller cylinder.
  • the planetary spindles are under pressure in the longitudinal direction due to the helical toothing.
  • the pressure is The pressure is directed towards the discharge end of the extruder. This pressure is absorbed by thrust rings at the end of the extruder.
  • the planetary spindles slide along the thrust ring as they rotate around the central spindle.
  • a planetary roller extruder as a multi-modular system means that processes of increasing complexity can be implemented on the corresponding machine type, so that an extensive, cross-size system kit for modular planetary roller extruders with modules of various lengths is now available.
  • Modular planetary roller extruders can now comprise between two and up to more than eight modules, with more process steps being able to be implemented in direct sequence if the planetary roller extruder is longer.
  • degassing and reactive processes are also being implemented more and more frequently. This means that solid and liquid feeds as well as degassing points can be implemented at almost any position along the process line.
  • the modules When merging, the modules must be aligned with one another due to the internal gearing of the roller cylinder, so that the internal gearing parallel to the continuous central spindle also has the same orientation along the planetary roller extruder to the central spindle. If the modules are of different or unfavorable lengths, this can mean that the externally attached inlets and/or outlets cannot all be attached to the different modules of the modular planetary roller extruder at the same angle, which on the one hand places mechanical stress on the planetary roller extruder over its entire length and can cause difficulties when assembling the lateral inlets and outlets.
  • a roller cylinder for a planetary roller extruder constructed from modules, with an inner side and an outer side, and with a spiral-shaped internal toothing running from a first end of the roller cylinder to the opposite second end on the inner side of the roller cylinder, consisting of a plurality of tooth spirals running parallel on the inner side and equally spaced from one another, wherein the roller cylinder has a length parallel to its cylinder axis, which is adapted so that each tooth of the internal toothing at the first end of the roller cylinder is in projection along the cylinder axis in coincidence with a tooth at the second end of the roller cylinder.
  • the fixed roller cylinder forms the outer component of a planetary roller extruder, the mechanical principle of which consists in the rotation of floating planetary spindles on the internal teeth of the roller cylinder, which in turn are floatingly mounted on a central spindle that runs through the roller cylinder along its cylinder axis and are driven by the rotation of the central spindle, so that they perform a rolling and circulating movement in the direction of rotation of the central spindle over the inside of the roller cylinder.
  • the planetary spindles are externally toothed and engage in their rotation both in the teeth of the central spindle, which is also continuously externally toothed, and in the teeth of the roller cylinder.
  • the assembly of roller cylinder, central spindle and planetary spindles is referred to as a module, with the central spindle passing through the modules as a common central spindle, while the roller cylinders and in most cases also the planetary spindles are restricted to the respective module.
  • the planetary spindles can also extend over two or more modules, the length of which in this case is defined by the roller cylinders alone.
  • the projection of the teeth at one end onto the teeth at the other end is a graphic projection, since the rotating tooth spirals are in the projection path for an actual optical projection along the inside, so that the teeth at the other end of the roller cylinder are covered. Nevertheless, such a projection can be carried out graphically as part of the design and the length required to cover the teeth can be determined constructively and the correspondingly designed roller cylinder can then be manufactured with this special length.
  • the teeth that are covered in the projection do not necessarily have to be the teeth of the same tooth spiral.
  • a tooth spiral is the course of a toothing along the inside of the roller cylinder from the first to the second end, with the toothing running spirally over the inner wall.
  • Teeth of different tooth spirals can also be made to cover by choosing the appropriate length of the roller cylinder, with all the teeth of the first end then being covered by one tooth of another tooth spiral at the second end. end.
  • n tooth spirals of the internal toothing on the inside there are n teeth at the respective first and second ends and thus n possible lengths for the roller cylinder per integer revolution of the tooth spirals, in which the teeth can be made to coincide as claimed above.
  • the individual length of the roller cylinder depends on the distance between the tooth spirals and the pitch of the tooth spirals relative to the cylinder axis. Therefore, the length of the roller cylinder can only be claimed functionally for comprehensive protection of the roller cylinder according to the present invention. Examples of concrete embodiments are only intended to illustrate the present invention in the description of the figures, without restricting the scope of protection to these examples.
  • the tooth of the first and second end refers to the cross section through the tooth spiral that is obtained when the roller cylinder is cut perpendicular to the cylinder axis of the roller cylinder. Since the ends of the roller cylinders on the first and second sides are aligned perpendicular to the cylinder axis (otherwise a continuous central spindle could not be arranged through the modules in the modular planetary roller extruder), the teeth on the first and second ends overlap when projected apart if the roller cylinder is of a suitable length along the cylinder axis.
  • both end surfaces of the roller cylinder as the respective surface of an identical clock with, for example, a tooth at a "12 o'clock” position at the first end, then the roller cylinder claimed would have This also places a tooth at the same “12 o’clock” position at the second end of the roller cylinder.
  • roller cylinder according to the invention with the correspondingly determined special length along its cylinder axis provides a solution for avoiding additional mechanical loads in modular planetary roller extruders, which also makes it easier to install the lateral inlets and outlets. If the roller cylinders did not have this special length, it would not be possible to align the inlets and outlets in such a way that the mechanical load on the roller cylinder is low and the same for all roller cylinders of a modular planetary roller extruder. Installing inlets and outlets in any orientation would also be much more difficult than with a vertical or horizontal orientation. Other extruders are used as inlets, for example, where the spindle should be inserted into the roller cylinder as horizontally or vertically as possible in order to avoid having to provide complicated installation aids, for example for an inclined insertion.
  • the roller cylinder comprises on its outside one or more connection arrangements suitable for connecting lateral inlets and outlets.
  • a connection arrangement can be designed as a flange in an area of the outside of the roller cylinder.
  • the lateral inlets and outlets can be provided with a correspondingly designed counter flange so that both components can be connected to one another via the flange.
  • the term “lateral” here only means that the inlets and outlets are arranged perpendicular to the cylinder axis on the outside of the roller cylinder.
  • the term “lateral”, on the other hand, does not mean the spatial orientation of the inlets and outlets relative to a base (parallel, perpendicular or at a different angle to each other) on which the planetary roller extruder with such roller cylinders is mounted.
  • Inlets and outlets can be used, for example, for feeding solids or liquids (inlets).
  • the inlets and outlets could also be used to remove material from the roller cylinder or to degas the material processed in the roller cylinder (outlets) or for other purposes.
  • the possibility of arranging one or more inlets and outlets on one or more roller cylinders enables solid or liquid supply as well as degassing of the processed material at almost any position in the process line and thus enables the planetary roller extruder to be precisely tailored to the individual requirements of a process, thus further broadening the application area of the planetary roller extruder.
  • connection arrangement of the roller cylinders is aligned in such a way that, after suitable alignment of the roller cylinders to one another, lateral inlets and outlets can be mounted horizontally and/or vertically to the base of the planetary roller extruder.
  • additional mechanical loads can be reduced in modular planetary roller extruders. avoided and at the same time the installation of the side inlets and outlets can be made easier.
  • the length parallel to its cylinder axis is adjusted so that each tooth of the internal toothing at the first end of the roller cylinder, in projection along the cylinder axis, comes from the same tooth spiral to coincide with the tooth at the second end.
  • the invention further relates to a toothed cylindrical intermediate ring for an arrangement between two roller cylinders according to the invention in a modular planetary roller extruder, wherein the toothed intermediate ring has an inner side and an outer side and an internal toothing running from a first end of the toothed intermediate ring to the opposite second end on the inner side of the toothed intermediate ring, consisting of a plurality of tooth spirals running parallel on the inner side and at the same distance from one another, wherein the internal toothing is designed analogously to the internal toothing of the roller cylinders between which the toothed intermediate ring is intended for arrangement, wherein the toothed intermediate ring has a length parallel to its cylinder axis, which is adapted so that each tooth of the internal toothing at the first end of the toothed intermediate ring in projection along the cylinder axis coincides with a tooth at the second end of the toothed intermediate ring.
  • the intermediate ring Since the intermediate ring is located between two roller cylinders, it must in principle meet the same length requirements as the roller cylinder itself, so that the advantage of the roller cylinder is not lost due to an intermediate ring that is not adjusted in length. Since the intermediate ring is short in the direction of its cylinder axis compared to the roller cylinder, only the teeth of one end need to be aligned with the teeth of the other end over the selected length of the intermediate ring, without the teeth that are aligned having to be the teeth of the same spiral tooth.
  • the intermediate ring according to the invention achieves or maintains the same advantages as those already described for the bug cylinder.
  • An intermediate ring represents a toothed connection between the two roller cylinders, so that the planetary spindles can also be guided over the area of the toothed intermediate ring.
  • intermediate rings teethed or non-toothed
  • sensors such as temperature sensors
  • the invention further relates to a non-toothed cylindrical starting or dispersing ring for an arrangement between two roller cylinders according to the invention in a modular planetary roller extruder, wherein the non-toothed starting or dispersing ring has a length between a first end and a second End of the non-toothed starting or dispersing ring along the cylinder axis, which is equal to the length of a toothed cylindrical intermediate ring according to the invention intended for arrangement between the same roller cylinders.
  • the length of the starting or dispersing ring can nevertheless be selected such that the advantages of the roller cylinder according to the invention described above are retained in the same way as if an internally toothed intermediate ring had been arranged there instead of the starting or dispersing ring.
  • the two roller cylinders with the starting or dispersing ring between them could be aligned in the same way as described above with the correspondingly selected special length of the starting or dispersing ring, resulting in the same advantages as described above.
  • a starting ring represents a contact surface for the planetary spindle, so that an axial movement of the planetary spindles along the central spindle is limited by the contact surface.
  • the thrust ring creates a flow resistance for the material processed in the planetary roller extruder, for which purpose it extends into the space between the inside of the roller cylinder and the central spindle and thus also divides the two roller cylinders into separate modules.
  • the dispersion ring serves the same purpose as the thrust ring, so that the above described for the thrust ring also applies to the dispersion ring.
  • the dispersion ring extends even further into the space between the inside of the roller cylinder and the Central spindle so that the central spindle has no external teeth in the area of the dispersion ring in order to be able to make the central hole in the dispersion ring around the central spindle as small as possible in order to be able to make the flow resistance for the material processed in the planetary roller extruder even more special.
  • the invention further relates to a planetary roller extruder constructed from modules comprising at least two roller cylinders according to the invention, an externally toothed central spindle extending through the roller cylinders to one end of the planetary roller extruder and at least one, preferably a plurality of externally toothed planetary spindles arranged between the central spindle and the roller cylinder, wherein a cylindrical transition element in the form of an intermediate ring according to the invention or a starting or dispersing ring according to the invention is arranged between two roller cylinders arranged one after the other.
  • the planetary roller extruder according to the invention with the correspondingly determined special lengths of the roller cylinders and the transition element between the roller cylinders along their cylinder axes provides a solution for avoiding additional mechanical loads in the planetary roller extruders according to the invention, which also facilitates the assembly of the lateral inlets and outlets.
  • all roller cylinders of the planetary roller extruder and the transition elements used have the length specified according to the present invention.
  • a lateral feed and discharge is arranged on at least one of the roller cylinders by means of a connection to the connection arrangement of the roller cylinder. The details already described above also apply here to the lateral feed and discharge.
  • one or more lateral feed and discharge lines are arranged on several roller cylinders, which are aligned either parallel to one another or at a 90° angle to one another. This enables the planetary roller extruder to be loaded evenly for all modules.
  • the multiple lateral inlets and outlets are aligned horizontally to the base on which the planetary roller extruder is set up, or vertically to it. Such an alignment minimizes the mechanical loads on the planetary roller extruder caused by the inlets and outlets, which is only made possible by the special lengths of the roller cylinders and transition elements according to the invention.
  • the invention further relates to a method for assembling a planetary roller extruder constructed from modules comprising one or more roller cylinders according to the invention, comprising the following steps:
  • transition element in the form of a toothed cylindrical intermediate ring according to the invention or a non-toothed cylindrical starting or dispersing ring according to the invention on the first of the roller cylinders, wherein in the case of the toothed cylindrical intermediate ring the teeth of the intermediate ring and the teeth of the first roller cylinder are aligned with one another at their mutually facing ends such that the teeth of the facing ends coincide;
  • the further roller cylinder being aligned with respect to the transition element as if the transition element were a toothed cylindrical intermediate ring, in which the teeth of the roller cylinder and the teeth of the assumed intermediate ring would be aligned at their mutually facing ends such that the teeth of the facing ends would coincide;
  • the method according to the invention makes it possible to avoid additional mechanical stresses on modular planetary roller extruders by installing lateral inlets and outlets and at the same time to facilitate the installation of the lateral inlets and outlets.
  • roller cylinders when assembling the Roller cylinders are aligned in such a way that the existing connection arrangement of the roller cylinders is suitable for connection for lateral inlets and outlets, so that later connected lateral inlets and outlets are arranged horizontally and/or vertically to the base of the planetary roller extruder.
  • Fig. 1 shows an embodiment of a roller cylinder in a sectional view
  • Fig. 2 shows an embodiment of (a) an intermediate ring, (b) a starting ring and (c) a dispersing ring;
  • Fig.3 shows an embodiment of a modular
  • Fig.4 shows a method according to the invention for assembling a
  • Fig. 1 shows an embodiment of a roller cylinder 1 according to the invention for a planetary roller extruder 50 constructed from modules M in a sectional view.
  • the roller cylinder 1 comprises an inner side 11 and an outer side 12 as well as a spiral-shaped internal toothing 13 running from a first end 1 a of the roller cylinder 1 to the opposite second end 1 b on the inner side 11 of the roller cylinder 1, consisting of a plurality of tooth spirals ZS running parallel on the inner side 11 and at the same distance from one another, the roller cylinder 1 having a length LW parallel to its cylinder axis Z, which is adapted so that each tooth 13a of the internal toothing 13 at the first end 1 a of the roller cylinder 1 is in line with a tooth 13b at the second end 1 b of the roller cylinder 1 in projection along the cylinder axis Z.
  • the roller cylinder 1 can comprise on its outer side 12 one or more connection arrangements 14 (not shown) suitable for connecting lateral inlets and outlets 40 (not shown).
  • the connection arrangement 14 of the roller cylinders 1 is aligned such that, after suitable alignment of the roller cylinders 1 to one another, lateral inlets and outlets 40 can be mounted horizontally and/or vertically to the base 80 (not shown) of the planetary roller extruder 50.
  • the length LW parallel to the cylinder axis Z of the roller cylinder 1 is adjusted such that each tooth 13a of the internal toothing 13 at the first end 1 a of the roller cylinder 1 comes from the same tooth spiral ZS in projection along the cylinder axis Z to coincide with the tooth 13b at the second end 1 b.
  • Fig. 2 shows an embodiment (a) of an intermediate ring 20, (b) of a starting ring 30 and (c) of a dispersing ring 30 according to the present invention for an arrangement between two roller cylinders according to the invention, see Fig. 1.
  • the toothed intermediate ring 20 with an inner side 21 and an outer side 22 and with a first end 20a of the toothed intermediate ring 20 to the opposite second end 20b comprises a continuous internal toothing 23 arranged on the inner side 21 of the toothed intermediate ring 20 made of a plurality of tooth spirals ZS running parallel on the inner side 21 and at the same distance from one another, wherein the internal toothing 23 is designed analogously to the internal toothing 11 of the roller cylinders 1, between which the toothed intermediate ring 20 is intended for arrangement, wherein the toothed intermediate ring 20 has a length LZ parallel to its Cylinder axis Z which is adapted so that each tooth 23a of the internal toothing 23 at the first end 20a of the toothed intermediate ring
  • the non-toothed cylindrical starting or dispersing ring (30) also has a length (LAD) between a first end (30a) and a second end (30b) of the non-toothed starting or dispersing ring (30) along the cylinder axis which is equal to the length of the toothed cylindrical intermediate ring (20) according to the invention intended for arrangement between the same roller cylinders (1).
  • LAD length between a first end (30a) and a second end (30b) of the non-toothed starting or dispersing ring (30) along the cylinder axis
  • Fig.3 shows an embodiment of a planetary roller extruder 50 according to the invention constructed from modules M, comprising at least two roller cylinders (1) according to the invention, an externally toothed central spindle (60) extending through the roller cylinders (1) to one end of the planetary roller extruder (50) and at least one, preferably a plurality of externally toothed planetary spindles (70) arranged between the central spindle and the roller cylinder (1), wherein a cylindrical transition element in the form of an intermediate ring (20) according to the invention or a starting or dispersing ring (30) according to the invention is arranged between two roller cylinders (1) arranged one after the other.
  • lateral inlets and outlets (40) are arranged on the roller cylinder (1) by means of a connection to the connection arrangement (14) (not shown) of the roller cylinder (1), which are aligned either parallel to one another or at a 90° angle to one another.
  • the side inlets and outlets (40) are also aligned horizontally to the base (80) (not shown) on which the planetary roller extruder (50) is installed, or vertically thereto.
  • Fig.4 shows a method 100 according to the invention for assembling a planetary roller extruder 50 constructed from modules M comprising one or more roller cylinders 1 according to the invention, comprising subsequent steps of providing 110 a first of the roller cylinders 1 already mounted on components of the planetary roller extruder 50; of mounting 120 a transition element in the form of a toothed cylindrical intermediate ring 20 according to claim 4 or a non-toothed cylindrical starting or dispersing ring 30 according to claim 5 on the first of the roller cylinders 1, wherein in the case of the toothed cylindrical intermediate ring 20 the teeth 23a of the intermediate ring 20 and the teeth 13b of the first roller cylinder 1 are aligned at their mutually facing ends 20a, 1b such that the teeth 23a, 13b of the facing ends 20a, 1b coincide, of mounting 130 a further one of the roller cylinders 1 on the transition element 20, 30, wherein the further roller cylinder 1 is aligned with respect to the transition element 20, 30 as if the transition element 20, 30 were
  • roller cylinders 1 When assembling 130 the roller cylinders 1, these are aligned in such a way that existing connection arrangement 14 of the roller cylinders 1 suitable for connection for lateral inlets and outlets 40 are aligned in such a way that later connected lateral inlets and outlets 40 are arranged horizontally and/or vertically to the base 80 of the planetary roller extruder 50.

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

Abstract

L'invention concerne des cylindres de rouleau (1) conçus pour une extrudeuse à rouleaux planétaires (50) constituée de modules (M), présentant une longueur (LW) spéciale favorable, des éléments de transition (20, 30) entre les cylindres de rouleau (1) sous la forme de bagues intermédiaires (20) cylindriques dentées ou de bagues d'appui ou de dispersion (30) cylindriques non dentées, présentant également une longueur (TÜ, LAD) spéciale favorable, une extrudeuse à rouleaux planétaires (50) constituée de modules (M) et comprenant ces éléments (1, 20, 30), ainsi qu'un procédé (100) de montage d'une telle extrudeuse à rouleaux planétaires (50).
PCT/DE2023/200211 2022-10-18 2023-10-16 Cylindre de rouleau, bague intermédiaire, extrudeuse à rouleaux planétaires et procédé WO2024083291A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102022127357.1 2022-10-18
DE102022127357.1A DE102022127357A1 (de) 2022-10-18 2022-10-18 Walzenzylinder, zwischenring, planetwalzenextruder und verfahren

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010026535A1 (de) * 2010-07-07 2012-01-12 Entex Rust & Mitschke Gmbh Planetwalzenextrudermodul mit segmentiertem Gehäuse
WO2017001048A1 (fr) * 2015-07-02 2017-01-05 Entex Rust & Mitschke Gmbh Procédé de traitement de produits dans une extrudeuse
EP3594303A1 (fr) * 2018-07-12 2020-01-15 Tesa Se Fabrication d'une masse adhésive à base de caoutchouc solide epdm
EP3782794A2 (fr) * 2019-08-14 2021-02-24 Brückner Maschinenbau GmbH & Co. Kg Installation de fabrication d'une matière plastique fondue et utilisation d'une telle installation de fabrication d'une matière plastique fondue pour une feuille poreuse

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010026535A1 (de) * 2010-07-07 2012-01-12 Entex Rust & Mitschke Gmbh Planetwalzenextrudermodul mit segmentiertem Gehäuse
WO2017001048A1 (fr) * 2015-07-02 2017-01-05 Entex Rust & Mitschke Gmbh Procédé de traitement de produits dans une extrudeuse
EP3594303A1 (fr) * 2018-07-12 2020-01-15 Tesa Se Fabrication d'une masse adhésive à base de caoutchouc solide epdm
EP3782794A2 (fr) * 2019-08-14 2021-02-24 Brückner Maschinenbau GmbH & Co. Kg Installation de fabrication d'une matière plastique fondue et utilisation d'une telle installation de fabrication d'une matière plastique fondue pour une feuille poreuse

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