WO2008107173A1 - Vorrichtung zur erzeugung von granulatkörnern aus einer kunststoffschmelze - Google Patents
Vorrichtung zur erzeugung von granulatkörnern aus einer kunststoffschmelze Download PDFInfo
- Publication number
- WO2008107173A1 WO2008107173A1 PCT/EP2008/001744 EP2008001744W WO2008107173A1 WO 2008107173 A1 WO2008107173 A1 WO 2008107173A1 EP 2008001744 W EP2008001744 W EP 2008001744W WO 2008107173 A1 WO2008107173 A1 WO 2008107173A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- nozzle plate
- diamond coating
- nozzle
- average roughness
- cutting bar
- Prior art date
Links
- 239000008187 granular material Substances 0.000 title claims abstract description 19
- 238000004519 manufacturing process Methods 0.000 title abstract description 6
- 238000000576 coating method Methods 0.000 claims abstract description 37
- 239000011248 coating agent Substances 0.000 claims abstract description 35
- 229910003460 diamond Inorganic materials 0.000 claims abstract description 34
- 239000010432 diamond Substances 0.000 claims abstract description 34
- 238000000034 method Methods 0.000 claims description 7
- 229910001092 metal group alloy Inorganic materials 0.000 claims description 2
- 239000000463 material Substances 0.000 description 6
- 239000000498 cooling water Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
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
- B29B9/00—Making granules
- B29B9/02—Making granules by dividing preformed material
- B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
- B29B9/065—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion under-water, e.g. underwater pelletizers
-
- 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
- B29B9/00—Making granules
- B29B9/02—Making granules by dividing preformed material
- B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
- B01J2/20—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic by expressing the material, e.g. through sieves and fragmenting the extruded length
-
- 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
- B29B11/00—Making preforms
- B29B11/02—Making preforms by dividing preformed material, e.g. sheets, rods
Definitions
- the invention relates to a device for producing granules from a plastic melt, with a nozzle plate having at least one nozzle opening, from which a strand of the plastic melt emerges in a process chamber, and a cutting tool with at least one cutting bar, which is movable with a feed device against the nozzle plate in which the plastic rod emerging from the nozzle orifice of the nozzle plate can be divided into granules by the cutting strip moved relative to the nozzle orifice.
- the device according to the invention for the production of granules from a plastic melt has a nozzle plate with at least one nozzle opening, from which a strand of the plastic melt exits into a process chamber, and a cutting tool with at least one cutting bar, which is movable with a feed device against the nozzle plate, wherein the From the nozzle orifice of the nozzle plate escaping plastic rod can be divided by the relative to Düsenöffhung moving cutting bar in granules.
- the nozzle plate has a diamond coating on at least the surface facing the cutting tool, the hardness of the diamond coating, ie the material of the diamond coating, being greater than the hardness of the cutting bar, ie the material of the cutting bar, and the average roughness of the Diamond coating, ie the material of the diamond coating, by at least a factor of two greater than the average roughness of the cutting bar, ie the material of the cutting bar. Due to the inventive design of the device with the nozzle plate with a diamond coating whose hardness is greater than the hardness of the cutting bar, it is achieved that the life of such a nozzle plate can be significantly extended over conventional nozzle plates with normal hard metal coatings.
- the granulation performance of the device according to the invention is further improved by virtue of the average roughness of the diamond coating, ie of the material of the diamond coating, which is at least a factor of two greater than the average roughness of the cutting bar, ie the material of the cutting bar, a certain regrinding effect for the cutting bar according to the invention occurs, which ensures that even after prolonged operation or towards the end of the life still a reliable formation of granules is possible Design, the entire level of hardness of the components used can be increased, so that according to the invention the service life can be significantly increased in each case.
- the average roughness of the diamond coating may even be at least a factor of five, preferably a factor of ten, greater than the average roughness of the cutting bar, whereby the regrinding effect can be improved even further.
- the average roughness of the diamond coating can be greater than or equal to 0.50 ⁇ m.
- the diamond coating may have a thickness in the range of 50 ⁇ m to 100 ⁇ m.
- the diamond coating can be arranged or embodied on a replaceable insert or support in or on the nozzle plate, which results in a particular service friendliness.
- the cutting bar itself may consist of a hard metal alloy. As a result, according to the invention, the service life of the cutting bar can be significantly increased again.
- Figure 1 is a schematic sectional view of an apparatus for producing granules of a plastic melt according to an embodiment of the invention
- Figure 2 is a schematic sectional view of a nozzle plate with a disposed on a replaceable insert diamond coating according to a preferred embodiment of the present invention
- FIG. 3 shows a schematic sectional view of a nozzle plate with a diamond coating arranged on an exchangeable support in accordance with a further preferred embodiment of the present invention.
- Figure 4 is a schematic plan view of a nozzle plate with a diamond coating according to a preferred embodiment of the present invention.
- the device shown schematically in FIG. 1 for the production of granules from a plastic melt 1 (indicated by the arrow in FIG. 1) has a nozzle plate 2, which in a known manner is preceded by a cone 26 which is not shown Passing parts for the supplied in liquid form plastic melt belongs.
- the cone 26 is attached to the nozzle plate 2 by means of a screw, for example. screwed, which presses with its head 25, the plate 24 to the nozzle plate 2.
- the nozzle plate 2 is penetrated by the melt lines, which end in nozzles or nozzle openings 3.
- the Düsenöffrionne 3 are embedded in a multiple annular arrangement in the nozzle plate 2 and are used in a known manner to leak to be granulated plastic from their openings.
- a diamond coating 8 is provided with openings which coincide with the nozzle openings 3 or are aligned therewith, over which blades 10 of a cutting tool 5 strike with their cutting strip 6; Knife 10 are held by a knife rotor 11, so that upon rotation of the knife rotor 11, the blades 10 cut from the nozzles escaping plastic to granules. The blades 10 remain in touching contact with the nozzle plate 2 and with the diamond coating 8 of the nozzle plate 2 and slide over them and the nozzles 3 away, which ensures a smooth cut of the exiting from the nozzle 3 plastic.
- the knife rotor 11 is attached to the end face facing this drive shaft 12 thereto.
- the drive shaft 12 is connected to a drive motor, not shown here, for which purpose the drive shaft 12 of the knife rotor 11 is connected in a known manner with the motor-side shaft 13.
- a feed device 7 serves to drive the cutting tool 5 against the nozzle plate 2.
- connection between the drive shaft 12 and the blade rotor 11 is designed as follows, wherein a similar design, for example in the
- German Offenlegungsschrift DE 103 44 793 A1 is shown:
- the knife rotor 11 has a central recess 14, the inner surface with the surface of a
- Ball matches In this recess 14, a ball portion 15 is fitted so that the blade rotor 11 can be adjusted to the ball portion 15 in the manner of an all-round tilting movement.
- the ball portion 15 has a
- the ball section 15 has, for its centered fixing to the drive shaft 12, an annular projection 18 which fits on a corresponding projection on the end face of the drive shaft 12. Because of this attachment of the ball portion 15 and the receptacle of the knife rotor 11 on the spherical shape of the outer surface of the ball portion 15 and the inner surface 14 of the knife rotor 11 can be tilted relative to the drive shaft 12 so that the blade rotor 11 from its rectangular in Fig. 1 shown Position to the drive shaft 12 can be moved in a tilted against a slight angle to another position.
- the blade rotor 11 When the drive shaft 12 rotates, the blade rotor 11 is entrained, with the blades 10 sliding over the surface of the nozzle plate 2 or over the diamond coating 8 of the nozzle plate 2. If it is due to e.g. From temperature-related shifts to a displacement of the exact position of the drive shaft 12 to the nozzle plate 2 comes, for example, by wear of the blade 10 or the relevant surface of the nozzle plate 2, as is ensured by the feed device 7 that on the one hand due to an axial pressure against the blade rotor 11, the blades 10 remain in contact with the surface of the nozzle plate 2 and the diamond coating 8 of the nozzle plate 2 and thereby compensate for a slight tilting of the drive shaft 12 relative to the nozzle plate 2, that the blade rotor 11 on the ball portion 15th can shift so that it adapts to the given by the surface of the nozzle plate 2 direction, without that the blade rotor can slide out of its central position to the drive shaft 12 out. This ensures that while maintaining the torque of the blade rotor 11
- the area of the nozzle plate 2 with the diamond coating 8 and with the nozzles 3 and the blade rotor 11 with its knives 10 is in the interior of a Pro accommodated in the cooling water via the inlet 22 and a flow, not shown, so that the cutting of the exiting the nozzle 3 plastic under the action of the cooling water, whereby the cut lengths of the exiting the nozzle 3 plastic quickly granules solidify and be flushed out of the interior of the process chamber 4.
- the process chamber 4 is firmly connected in a manner not shown here with the nozzle plate 2, wherein between the process chamber 4 and the nozzle plate 2, a seal 23 is used, which isolates the heated nozzle plate 2 with respect to the filled with cooling water interior of the process chamber 4.
- the attachment of the blade 10 can be improved to the blade rotor 11 to the effect that on the one hand good accessibility of the blade holding fasteners and on the other hand, this does not hinder the flow in spaces.
- the blade rotor may be designed as shown in German Offenlegungsschrift DE 10 2004 049 862 A1.
- wings of side walls of radial grooves in a circumferential surface of the knife rotor and radial transverse walls in the radial grooves are formed, which are bounded by the radial transverse walls, in which the knives are hooked, each with a projection are used, wherein one side of the projection is an abutment for the Forming element which passes through a radial transverse wall and presses on the abutment. Due to this hook-like attachment of the individual knives and the onset of the fasteners by a radial transverse wall they are seen from a front side of the knife rotor forth directly and easily accessible. They are located away from the spaces between knives and straps and therefore can not hinder the running in these spaces flow.
- the hook-like design of the knife provides a high level of security with respect to their position with respect to the blade rotor, so that in total the inventively equipped Knife rotor has a particularly stable for operation, flutter-free design.
- FIG. 2 shows a schematic sectional view of a nozzle plate 2 with a diamond coating arranged on a replaceable insert 8a according to a preferred embodiment of the present invention.
- the openings in the insert 8 a are aligned with the nozzle openings 3 of the nozzle plate. 2
- FIG. 3 shows a further schematic sectional view of a nozzle plate 2 with a diamond coating arranged on an exchangeable support 8b according to a further preferred embodiment of the present invention. Again, the openings in the support 8b are aligned with the nozzle openings 3 of the nozzle plate. 2
- FIG. 4 shows a schematic plan view of a nozzle plate 2 with a diamond coating 8 according to a preferred embodiment of the present invention, wherein here too the openings in the diamond coating 8 are aligned with the nozzle openings 3 of the nozzle plate 2.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
Abstract
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE502008002292T DE502008002292D1 (de) | 2007-03-08 | 2008-03-05 | Vorrichtung zur erzeugung von granulatkörnern aus einer kunststoffschmelze |
AT08716261T ATE494997T1 (de) | 2007-03-08 | 2008-03-05 | Vorrichtung zur erzeugung von granulatkörnern aus einer kunststoffschmelze |
JP2009552116A JP2010520090A (ja) | 2007-03-08 | 2008-03-05 | プラスチック溶融液から粒状化された粒子を生産するための装置 |
EP08716261A EP2134521B1 (de) | 2007-03-08 | 2008-03-05 | Vorrichtung zur erzeugung von granulatkörnern aus einer kunststoffschmelze |
KR1020097021095A KR101302574B1 (ko) | 2007-03-08 | 2008-03-05 | 플라스틱 멜트에서 입자상 그레인을 제조하는 장치 |
CN2008800073151A CN101657307B (zh) | 2007-03-08 | 2008-03-05 | 用于由塑料熔体制造粒状颗粒的设备 |
US12/530,611 US8226396B2 (en) | 2007-03-08 | 2008-03-05 | Device for the production of granulate grains from a plastic melt |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE202007003495U DE202007003495U1 (de) | 2007-03-08 | 2007-03-08 | Vorrichtung zur Erzeugung von Granulatkörnern aus einer Kunststoffschmelze |
DE202007003495.4 | 2007-03-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2008107173A1 true WO2008107173A1 (de) | 2008-09-12 |
Family
ID=38282659
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2008/001744 WO2008107173A1 (de) | 2007-03-08 | 2008-03-05 | Vorrichtung zur erzeugung von granulatkörnern aus einer kunststoffschmelze |
Country Status (8)
Country | Link |
---|---|
US (1) | US8226396B2 (de) |
EP (1) | EP2134521B1 (de) |
JP (1) | JP2010520090A (de) |
KR (1) | KR101302574B1 (de) |
CN (1) | CN101657307B (de) |
AT (1) | ATE494997T1 (de) |
DE (2) | DE202007003495U1 (de) |
WO (1) | WO2008107173A1 (de) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8974791B2 (en) * | 2007-07-27 | 2015-03-10 | Armagen Technologies, Inc. | Methods and compositions for increasing α-L-iduronidase activity in the CNS |
DE102008062519A1 (de) * | 2008-12-16 | 2010-06-17 | Automatik Plastics Machinery Gmbh | Lochplatte und Verfahren zu deren Herstellung |
DE102011018403A1 (de) * | 2011-04-21 | 2012-10-25 | Automatik Plastics Machinery Gmbh | Verfahren zur Herstellung von pharmazeutischen Erzeugnissen aus einem Schmelzematerial |
DE102012012070A1 (de) | 2012-06-15 | 2013-12-19 | Automatik Plastics Machinery Gmbh | Düsenplatte für eine Granuliervorrichtung und Granuliervorrichtung mit einer Düsenplatte |
DE102012012062A1 (de) * | 2012-06-15 | 2013-12-19 | Automatik Plastics Machinery Gmbh | Granuliervorrichtung |
DE102013103664B4 (de) | 2013-04-11 | 2016-09-01 | Reduction Engineering Gmbh | Granuliervorrichtung für Kunststoffe |
DE102013008566B4 (de) * | 2013-05-17 | 2015-05-13 | Automatik Plastics Machinery Gmbh | Extrusionskopf mit Lochplatte einer Granulieranlage |
DE102018220207A1 (de) | 2018-10-30 | 2020-04-30 | Robert Bosch Gmbh | Verfahren und Vorrichtung zum Herstellen von Granulaten als Pulverwirkstoff für ein generatives Fertigungsverfahren, Granulat sowie Verwendung des Granulats |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3599285A (en) * | 1968-10-10 | 1971-08-17 | Myron & Mallay | Pelletizing die plate |
US4167386A (en) * | 1977-09-26 | 1979-09-11 | Muesco-Mallay Houston, Inc. | Extrusion die plate construction |
US4720251A (en) * | 1984-08-24 | 1988-01-19 | Muesco Mallay Houston Inc. | Extrusion die plate construction |
Family Cites Families (20)
Publication number | Priority date | Publication date | Assignee | Title |
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US3599286A (en) * | 1968-11-12 | 1971-08-17 | Norton Co | Thermally insulated extrusion die and method of making |
US3749539A (en) * | 1972-04-26 | 1973-07-31 | Eastman Kodak Co | Underwater pelletizer die plate |
US3847530A (en) * | 1973-07-19 | 1974-11-12 | Mallay Corp | Improved extrusion die plate |
JPS5160245A (de) * | 1975-09-29 | 1976-05-26 | Shell Int Research | |
US4378964A (en) * | 1980-01-08 | 1983-04-05 | Trw Inc. | Internally insulated extrusion die |
US4564350A (en) * | 1982-06-10 | 1986-01-14 | Thomas R. Vigil | Plastic extruder assembly |
JPS5990408U (ja) * | 1982-12-10 | 1984-06-19 | 株式会社日本製鋼所 | 合成樹脂押出機用造粒ダイス |
JPS6099443A (ja) * | 1983-11-02 | 1985-06-03 | Ngk Insulators Ltd | ハニカム成型用ダイスおよびその製造方法 |
IT1174480B (it) * | 1984-02-02 | 1987-07-01 | Montedison Spa | Filiera per il taglio a caldo di polimeri termoplastici |
US4621996A (en) * | 1985-04-24 | 1986-11-11 | Gala Industries, Inc. | Removable die center for extrusion dies |
US4752196A (en) * | 1986-05-22 | 1988-06-21 | Rogers Tool Works, Inc. | Internally insulated extrusion die |
US4856974A (en) * | 1986-05-22 | 1989-08-15 | Rogers Tool Works, Inc. | Internally insulated extrusion die |
JPH0622806B2 (ja) * | 1986-08-14 | 1994-03-30 | 日本碍子株式会社 | ハニカム成型用ダイスおよびその製造方法 |
US5403176A (en) | 1991-02-01 | 1995-04-04 | Gala Industries, Inc. | Tapered insert die plate for underwater pelletizers |
US5711492A (en) * | 1994-07-08 | 1998-01-27 | T.P.L. Products, Inc. | Composite machine elements from fiber reinforced polymers and advanced wear ceramics |
JP2828601B2 (ja) * | 1994-11-18 | 1998-11-25 | 株式会社日本製鋼所 | 合成樹脂用造粒ダイスおよびその製造方法 |
US6976834B2 (en) * | 2001-07-09 | 2005-12-20 | Borsig Gmbh | Pelletizing die with even heat distribution and with polymer channel to orifice transition zone, process for orifice thermal stabilization and process for forming a pelletizing die with brazing and thin hard face layer |
DE10344793A1 (de) | 2003-09-26 | 2005-04-14 | Rieter Automatik Gmbh | Vorrichtung zum Granulieren thermoplastischer Kunststoffe |
DE102004049862B4 (de) | 2004-10-13 | 2013-08-01 | Automatik Plastics Machinery Gmbh | Messerrotor zum Granulieren von Kunststoffsträngen |
DE202005001809U1 (de) | 2005-02-04 | 2005-04-14 | C.F. Scheer & Cie. Gmbh & Co. | Lochplatte für einen Unterwassergranulator |
-
2007
- 2007-03-08 DE DE202007003495U patent/DE202007003495U1/de not_active Expired - Lifetime
-
2008
- 2008-03-05 WO PCT/EP2008/001744 patent/WO2008107173A1/de active Application Filing
- 2008-03-05 DE DE502008002292T patent/DE502008002292D1/de active Active
- 2008-03-05 CN CN2008800073151A patent/CN101657307B/zh not_active Expired - Fee Related
- 2008-03-05 AT AT08716261T patent/ATE494997T1/de active
- 2008-03-05 JP JP2009552116A patent/JP2010520090A/ja not_active Withdrawn
- 2008-03-05 US US12/530,611 patent/US8226396B2/en not_active Expired - Fee Related
- 2008-03-05 EP EP08716261A patent/EP2134521B1/de not_active Not-in-force
- 2008-03-05 KR KR1020097021095A patent/KR101302574B1/ko not_active IP Right Cessation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3599285A (en) * | 1968-10-10 | 1971-08-17 | Myron & Mallay | Pelletizing die plate |
US4167386A (en) * | 1977-09-26 | 1979-09-11 | Muesco-Mallay Houston, Inc. | Extrusion die plate construction |
US4720251A (en) * | 1984-08-24 | 1988-01-19 | Muesco Mallay Houston Inc. | Extrusion die plate construction |
Also Published As
Publication number | Publication date |
---|---|
JP2010520090A (ja) | 2010-06-10 |
KR20090125172A (ko) | 2009-12-03 |
ATE494997T1 (de) | 2011-01-15 |
DE202007003495U1 (de) | 2007-07-05 |
KR101302574B1 (ko) | 2013-09-02 |
US8226396B2 (en) | 2012-07-24 |
DE502008002292D1 (de) | 2011-02-24 |
CN101657307B (zh) | 2013-03-06 |
CN101657307A (zh) | 2010-02-24 |
US20100143524A1 (en) | 2010-06-10 |
EP2134521B1 (de) | 2011-01-12 |
EP2134521A1 (de) | 2009-12-23 |
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