• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to the processing of plastics, in particular thermoplastics, mixed with gas-forming substances. The purpose of the invention is to increase the intensity of mixing of the processed components. For this, the extruder contains a hollow cylinder with feed openings and an auger. Retaining elements are placed on the screw. In the cylinder before and after the retaining elements there is an outlet and inlet, connected by a gear pump. The pump is mounted directly on the hollow cylinder perpendicular to the longitudinal axis. The inlet and outlet ports are located in the lower part of the gear pump housing with the possibility of entering the free zones between the pump gears. The ends of the pump gears are placed horizontally relative to the longitudinal axis of the cylinder. In operation, the molten screw through the outlet with increased pressure enters the free zone of the pump and strikes the face of its body. The melt is then captured by gears and moved along the walls of the pump. In the opposite free zone, due to the rotation of the gears, the melt flows collide, which promotes mixing. Thereafter, the melt is rotated through 90 ° and is injected into the inlet and into the area of the screw placed after the retaining elements. Thus, the melt undergoes a twist of 90 ° rotation, a blow against the walls of the shell, and a collision with another flow. This allows intensive mixing of the plastic with additives, including gas-forming substances. 4 il.
    公开号:SU1477241A3
    申请号:SU874202468
    申请日:1987-05-06
    公开日:1989-04-30
    发明作者:Колоссов Клаус-Дитер
    申请人:Херманн Бершторфф Машиненбау, Гмбх (Фирма)；
    IPC主号:
    专利说明:

    one
    The invention relates to the processing of plastics, in particular thermoplastics, mixed with gas-forming substances, for the manufacture of extruded foam semi-plastics.
    CH
    products, and can be used in the chemical industry.
    The purpose of the invention is to increase the intensity of mixing of the processed components.
    FIG. 1 shows an extruder, a longitudinal section; in fig. 2 - part of an extruder with a gear pump and retaining elements in the form of reverse feed loops, longitudinal section; in fig. 3 is a section A-A in FIG. 2 with a rotation of 90; FIG. 4 is a section BB in FIG. 3
    An extruder for producing mixtures of molten plastic contains a hollow cylinder 1 with a screw 2 rotatably mounted therein (a screw drive is not shown). Hollow cylinder 1 has loading openings
    3dl plastics and other components. On the screw 2 there are retaining elements 4, which can be made in the form of a throttle lattice (Fig. 1), and in the hollow cylinder 1 there are discharged exhaust 5 before and after the retaining elements 4
    and an inlet 6 for the melt of plastic, connected by means of a gear pump 7. The latter is mounted directly on the hollow cylinder 1, and its gears 8 and 9 are arranged perpendicular to the longitudinal central axis 10 of the hollow cylinder If Exhaust 5 and the inlet 6 holes are located in the lower part of the housing 11 gear pump 7 with the ability to enter into the corresponding free zones 12,13 between the neck 8,9 pump 7, and the ends of the gears 8,9 are located in the housing 11 horizontally relative to the longitudinal central axis 10 Ologo the cylinder 1. At the outlet end of the hollow cylinder 1 is mounted on the head 14 ekstruzion- "The housing 11 is connected to the hollow cylinder 1 by means of flanges not shown in the drawings"
    Fig. 1 shows an extruder with retaining elements 4 in the form of a section 15 of reverse feeds located between the outlet 5 and the inlet 6 holes.
    When working in the hollow cylinder 1, the screw is rotated and moves the melt of plastic and other components loaded through the holes 3 in the direction of the extrusion head 14 "With the help of section 15 with retaining elements
    4 a backflow of the melt is carried out and its feeding with an increased pressure into the outlet 5,
    five
    0
    0, d
    five
    Q
    five
    consequently, the gear pump 7 fed to the gear pump 7 enters the free zone 12 between the gears 8.9 and hits the front part of the pump body 11 of the pump 7 "Then the gears 8 and 9 of the pump 7 are captured by the melt and transported along the walls 7, as indicated by the arrows 16
    In the opposite free zone 13 between gears 8 and 9, due to the rapid rotation of the latter, the melt flows collide, resulting in intensive melt mixing again. After that, the melt rotated by 90 is injected into the inlet 6 and is fed to the portion of the screw 2 located 4.15 behind the retaining elements, and from here through the extrusion head 14 is pressed into the film sleeve 17.
    The use of a gear pump 7 ensures that a high and uniform pressure is applied to the material to be moved, as a result of which uniform extrusion of the plastic mixture is achieved.
    Due to the location of the gear pump 7 perpendicular to the longitudinal central axis 10 of the hollow cylinder 1 while placing the outlet 5 and the inlet 6 holes for melting plastic on the underside of the housing 11 of the pump 7 in the front and rear free zones between the gears 8.9, the plastic mixture is sucked in or squeezed out subjected to twofold rotation of 90, namely, once at the entrance to the housing 11 of the pump 7 and the second time at the exit from it
    Thus, it is possible to thoroughly mix the melt of plastic with additives, for example, with a gas-forming substance, without using additional-static mixing devices described, for example, in the prototype Gear pump 7 can be built into the line of movement of the melt using the minimum number of structural elements, while improved mixing is achieved, uniform pressure on the melt in the extrusion die zone, so
    five
    as there are no long circumferential channels and t „n0 that absorb the force of pressure
    Due to the horizontal arrangement of the ends of the gears 8.9 of the pump 7 relative to the longitudinal central axis 10 of the hollow cylinder 1 of the extruder in combination with the placement of the inlet 6 and outlet 5 holes in the front and rear free zones 1.13 between the gears 8.9, a twist turn 90 flow occurs the melt in the casing 11 of the pump 7. After entering the casing 11 of the pump 7, the melt first hits the upper wall of the casing 11, then the gears 8.9 capture it and move it along the corresponding wall of the casing 11 of the pump 7 " wa collides with the melt flow moving against the opposite gear and again mixed. Finally, after a secondary rotation of 90 °, it is forced through the inlet 6 hole in the underside of the casing 11 of the pump 7 into the hollow cylinder 1 of the extruder. As a result, the plastic melt is agitated with additives or gas-generating substances, so that the length of the melting and homogenization line can be significantly reduced and the number of mixing elements on the screw 2 can be reduced.
    772416
    权利要求:
    Claims (1)
    [1]
    Invention Formula
    An extruder for producing mixtures of 5 molten plastics, in particular thermoplastics, mixed with gas-forming substances, for the manufacture of extruded foam semi-finished products, comprising an auger, mounted rotatably in a hollow cylinder, having loading holes for plastics and other components, retaining elements on the auger, where
    15, in the hollow cylinder, there are discharged and inlet openings for melting plastic, located before and after the retaining elements in the working direction of the extruder,
    20 connected by means of a gear pump disposed in the housing, characterized in that, in order to increase the intensity, the processable components are mixed, the gear pump is mounted directly on the hollow cylinder perpendicular to its longitudinal axis, and the outlet and inlet for molten plastics are located in the lower part of the gear pump housing with the ability to enter the corresponding free zones between pump gears whose ends are located in The housing is 35 horizontally relative to the longitudinal central axis of the hollow cylinder.
    V
    FIG.
    ten
    Aa
    15 F1g.2
    sixteen
    73
    K -
    FIG. four
    Editor M. Kelemesh
    Tehred M. Didyk
    Order 2170/58 Circulation 536Subscription
    VNIIPI State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR 113035, Moscow, Zh-35, Raushsk nab. 4/5
    Production and publishing plant Patent, Uzhgorod, st. Gagarin, 101
    Proofreader N. King
    类似技术:
    公开号 | 公开日 | 专利标题
    SU1477241A3|1989-04-30|Extruder for producing plastic melt mixtures
    RU2053121C1|1996-01-27|Extruder for processing and production of rubber and thermoplastic materials
    KR0161981B1|1999-01-15|Method of producing panels
    US4025058A|1977-05-24|Continuous extruder for thermosetting resins
    SU700054A3|1979-11-25|Uxtruder for degassing polymeric materials
    EP1296753B1|2004-03-10|Method and device for reducing byproducts in the mixture of educt streams
    US4154536A|1979-05-15|High efficiency injection molding screw
    US4124307A|1978-11-07|Homogenizer for viscous materials
    NL8104255A|1982-05-03|STRENGTH DEVICE FOR MANUFACTURING FOAMY PLASTIC.
    EP0463759A2|1992-01-02|Production of thermoplastics foams
    DE3563595D1|1988-08-11|Method and apparatus for producing foam
    US4608210A|1986-08-26|Method for producing plastically bonded propulsion powders and explosives
    US6497508B1|2002-12-24|Plasticating process, apparatus and screw with mixing
    DE3036048A1|1981-04-09|PLASTIC EXTRUDER WITH A DEVICE FOR INJECTING A LIQUID ADDITIVE INTO THE MOLTEN PLASTIC FLOW
    US6712495B2|2004-03-30|Mixing apparatus
    MX9601497A|1997-08-30|Mixing-kneading extruding apparatus.
    US4776784A|1988-10-11|Extruder
    US4214862A|1980-07-29|Screw extruder for the continuous extrusion of thermoplastic materials
    US4196163A|1980-04-01|Production of stripped soap strands and apparatus for its production
    AU624386B2|1992-06-11|Feed unit for an extruder
    AT307012B|1973-05-10|Device for the continuous production of fibrous molding compounds
    EP0451921A1|1991-10-16|Mixing head for mixing of liquid chemically interreacting plastic components
    BR112019019909A2|2020-04-22|device for successive introduction of additives in a polymer granulate and use of the device
    US4775517A|1988-10-04|Apparatus for the preparation of a reaction mixture from liquid components
    US1604799A|1926-10-26|Extruding machine
    同族专利:
    公开号 | 公开日
    CN87102748A|1987-11-18|
    DE3763893D1|1990-08-30|
    US4730935A|1988-03-15|
    CN1008898B|1990-07-25|
    EP0244591A3|1989-06-07|
    EP0244591A2|1987-11-11|
    AT54873T|1990-08-15|
    EP0244591B1|1990-07-25|
    JPH0767729B2|1995-07-26|
    JPS62268622A|1987-11-21|
    DE3615586C1|1987-05-07|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE4331109A1|1993-09-15|1995-03-16|Bayer Ag|Single-shaft screw with gear pump|US2692405A|1949-06-30|1954-10-26|American Viscose Corp|Melt spinning apparatus|
    US3667733A|1970-01-28|1972-06-06|Rudolf Paul Fritsch|Device for the plastication of powdery plastic materials|
    CH521212A|1970-05-15|1972-04-15|Windmoeller & Hoelscher|Screw press for processing thermoplastic and non-crosslinked elastomers|
    US3985348A|1975-01-14|1976-10-12|W Bar E, Incorporated|Apparatus and method for feeding a powdery material to a plasticized, pressurized polymer|
    GB1518815A|1975-07-07|1978-07-26|Shell Int Research|Reducing the molecular chain length of polymers by shear degradation|
    US4015833A|1975-10-03|1977-04-05|The B. F. Goodrich Company|Extruder screw|
    GB1601698A|1977-08-20|1981-11-04|Gen Eng Radcliffe|Extrusion method and apparatus therefor|
    GB1591605A|1978-05-18|1981-06-24|Gen Eng Radcliffe|Method and apparatus for the injection of additives into plastics material|
    JPS5640534A|1979-09-10|1981-04-16|Kobe Steel Ltd|Kneading injection device|
    DE3038306C2|1980-10-10|1984-03-22|Hermann Berstorff Maschinenbau Gmbh, 3000 Hannover|Extrusion device for the production of foamed, thermoplastic plastic|
    US4436679A|1981-11-09|1984-03-13|Maryland Cup Corporation|Method and apparatus for generating foamed thermoplastic materials|
    GB8305214D0|1983-02-25|1983-03-30|Gen Eng Radcliffe|Gear pump|
    JPH0120975B2|1984-06-05|1989-04-19|Ikegai Tetsuko Kk|US5227111A|1991-05-06|1993-07-13|Dow Corning, S.A.|Manufacture of moisture curable organosiloxane compositions|
    US5518672A|1994-05-31|1996-05-21|Randcastle Extrusion Systems, Inc.|Extrusion surge controller and method|
    US5486328A|1994-05-31|1996-01-23|Randcastle Extrusion Systems, Inc.|Extrusion surge suppressor and method|
    CN1043636C|1994-08-11|1999-06-16|许达人|Concentration nitre extracting technology by acid bath one-step method|
    US6074578A|1995-02-23|2000-06-13|Csongor; Desider G.|Barrel wall conduit arrangements for a plastic processing screw machine|
    DE19539203A1|1995-10-21|1997-04-24|Gefinex Jackon Gmbh|Extruders for plastics|
    DK0855954T3|1996-10-21|2000-05-22|Gefinex Jackon Gmbh|Plastic Text Glazing|
    IT1290410B1|1996-05-03|1998-12-03|Giuseppe Ponzielli|DOOR DEVICE, ESPECIALLY FOR A POLYMER PROCESSOR, SUCH AS AN EXTRUDER|
    EP0835734A1|1996-09-16|1998-04-15|Kannegiesser KMH Kunststofftechnik GmbH|Method of manufacturing plastic with additives, especially fibers, therein, and extruder for carrying out this method|
    AT407855B|1997-04-23|2001-07-25|Bacher Helmut|METHOD AND DEVICE FOR MONITORING THE DEGREE OF WEARING OF A SEALING SCREW PROMOTING A PLASTIFIED MATERIAL|
    DE19741674A1|1997-09-22|1999-03-25|Haake Gmbh Geb|Mixer for viscoelastic materials|
    US6210030B1|1999-06-15|2001-04-03|Jean-Pierre Ibar|Method and apparatus to control viscosity of molten plastics prior to a molding operation|
    EP1714718B1|2001-04-19|2008-07-09|Alcoa Inc.|Continuous pressure molten metal supply system and method|
    US6505674B1|2001-04-19|2003-01-14|Alcoa Inc.|Injector for molten metal supply system|
    US6536508B1|2001-09-21|2003-03-25|Alcoa Inc.|Continuous pressure molten metal supply system and method|
    US6739485B2|2001-12-11|2004-05-25|Alcoa Inc.|Dual action valve for molten metal applications|
    US7083319B2|2003-05-15|2006-08-01|Buss Sms Gmbh Verfahrenstechnic|Large-volume reactor having a plurality of process spaces|
    US7934627B2|2005-10-13|2011-05-03|Alcoa Inc.|Apparatus and method for high pressure extrusion with molten aluminum|
    JP4907366B2|2007-01-26|2012-03-28|株式会社神戸製鋼所|Extruder screw, bearing segment used therefor, and twin screw extruder provided with extruder screw|
    DE102007007824B4|2007-02-16|2012-10-25|Vmi - Az Extrusion Gmbh|extruder|
    AT506298B1|2008-02-20|2009-08-15|Schulz Helmuth Ing|DEVICE FOR EXTRUDING THERMOPLASTIC PLASTIC GOODS|
    US8313051B2|2008-03-05|2012-11-20|Sealed Air Corporation |Process and apparatus for mixing a polymer composition and composite polymers resulting therefrom|
    JP6550253B2|2014-04-24|2019-07-24|東芝機械株式会社|Screw for extruder, extruder and extrusion method|
    JP6527742B2|2014-04-24|2019-06-05|東芝機械株式会社|Screw for extruder, extruder and extrusion method|
    JP6639800B2|2014-05-08|2020-02-05|東芝機械株式会社|Screw for extruder, extruder and extrusion method|
    JP6639798B2|2014-05-08|2020-02-05|東芝機械株式会社|Screw for extruder, extruder and extrusion method|
    JP6746278B2|2015-04-28|2020-08-26|芝浦機械株式会社|Extruder screw, extruder and extrusion method|
    JP6464025B2|2015-04-28|2019-02-06|東芝機械株式会社|Screw for extruder, extruder and extrusion method|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE3615586A|DE3615586C1|1986-05-09|1986-05-09|Extrusion device for the production of plastic melt mixtures|
    [返回顶部]