US3775036A - Rotational casting machine - Google Patents

Rotational casting machine Download PDF

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Publication number
US3775036A
US3775036A US00225916A US3775036DA US3775036A US 3775036 A US3775036 A US 3775036A US 00225916 A US00225916 A US 00225916A US 3775036D A US3775036D A US 3775036DA US 3775036 A US3775036 A US 3775036A
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US
United States
Prior art keywords
mold
hoods
supporting means
heater
stations
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.)
Expired - Lifetime
Application number
US00225916A
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English (en)
Inventor
G Winning
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.)
Individual
Original Assignee
Individual
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Filing date
Publication date
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Publication of US3775036A publication Critical patent/US3775036A/en
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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
    • B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
    • B29C41/34—Component parts, details or accessories; Auxiliary operations
    • B29C41/46—Heating or cooling
    • 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
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/34—Moulds or cores; Details thereof or accessories therefor movable, e.g. to or from the moulding station
    • B29C33/36—Moulds or cores; Details thereof or accessories therefor movable, e.g. to or from the moulding station continuously movable in one direction, e.g. in a closed circuit
    • 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
    • B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
    • B29C41/02—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of definite length, i.e. discrete articles
    • B29C41/04—Rotational or centrifugal casting, i.e. coating the inside of a mould by rotating the mould
    • 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
    • B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
    • B29C41/02—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of definite length, i.e. discrete articles
    • B29C41/04—Rotational or centrifugal casting, i.e. coating the inside of a mould by rotating the mould
    • B29C41/06—Rotational or centrifugal casting, i.e. coating the inside of a mould by rotating the mould about two or more axes

Definitions

  • SHEET 1 BF 2 ROTATIONAL CASTING MACHINE INTRODUCTION AND BACKGROUND OF THE INVENTION This invention relates to rotational casting machines for casting synthetic plastics materials or analogous materials, and refers more particularly to machines with rotary assemblages capable of functioning continuously.
  • the present invention has for its object a rotational casting machine thanks to which it is possible on the one hand to effect several chargings without returning the rotary assemblage towards the rear, without heat losses, and on the other hand to double the period of cooling, all whilst maintaining the same rhythm of production and, f1- nally, to frequently change the moulds and the arms without interrupting the manufacture.
  • the invention provides a rotary assemblage with four or more arms supporting moulds or mould-rotating devices, a charging station, a hearing station, and at least two cooling stations.
  • the heating station includes a movable heater, for example a furnace, movable upon guide rails to a withdrawn position in which it is completely clear of the mould-supporting arms and moulds.
  • each cooling station is upwardly removable and includes a hood forming a cooling chamber which is vertically displaceable, for example by means of pulleys with cables or chains.
  • FIG. 1 is a diagrammatic plan view of the machine according to the invention provided with difierent moulds, and
  • FIG. 2 is a lateral elevation thereof.
  • the machine is constituted essentially by a rotary assemblage with four or more arms I, rotatable about the central axis 2, and by four production stations disposed upon a circular path 3 in such a manner that the arms provided with different moulds or mould-rotating devices travel to these different stations in succession.
  • the heating station is formed by a furnace 5 which is movable, for example on rails according to the double arrow F, in such a path that in the withdrawn position (shown in continuous lines in the drawings) it is completely clear of the corresponding mould support thereby permitting the closing and opening of its doors.
  • a further characteristic of the invention consists in providing, outside the charging station 4 and the heating station 5, at least two cooling stations 6, 7 thus permitting the doubling of the cooling time, necessary in some instances.
  • this station may serve possibly for the changing of moulds or of arms without interruption of production.
  • Special arm-carrying carriages, which are not shown, permit the effecting of this operation in a very short time.
  • the cooling stations are characterised in that they are vertically removable, that is to say that their cooling hoods 6', 7', provided each with a slot 8 for engagement over the arms of the rotary assemblage, can be displaced vertically in the directions of the double arrows F l by known means such as, for example, pulleys with cables or chains, or jacks, or the like.
  • the machine which forms the subject of the invention may be utilised for the manufacture of articles of plastics materials or analogous materials, particularly containers, tanks, packaging components, toys, septic tanks, elements for decoration, boxes, ventilation ducts, and analogous articles.
  • a rotational casting machine capable of functioning continuously, comprising a rotary assemblage with at least four mold-supporting means thereon, a charging station, a heating station, at least two cooling stations, means for rotating said assemblage about an upright axis between said stations so that said moldsupporting means dwell in said stations, said heating station comprising a heater, means mounting said heater for movement radially of said axis between a radially inner position in which said heater encloses a said mold-supporting means and a radially outer position in which molds carried by said mold-supporting means can pass said heater, said at least two cooling stations comprising hoods open at their bottom and each comprising a cooling chamber, and means to move said hoods vertically between an upper position in which said hoods clear the molds carried by said moldsupporting means, and a lower position in which said hoods surround the molds carried by said moldsupporting means.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Moulding By Coating Moulds (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
US00225916A 1972-01-13 1972-02-14 Rotational casting machine Expired - Lifetime US3775036A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7201648A FR2167458B1 (enrdf_load_stackoverflow) 1972-01-13 1972-01-13

Publications (1)

Publication Number Publication Date
US3775036A true US3775036A (en) 1973-11-27

Family

ID=9092076

Family Applications (1)

Application Number Title Priority Date Filing Date
US00225916A Expired - Lifetime US3775036A (en) 1972-01-13 1972-02-14 Rotational casting machine

Country Status (6)

Country Link
US (1) US3775036A (enrdf_load_stackoverflow)
CA (1) CA996327A (enrdf_load_stackoverflow)
DE (1) DE2206997A1 (enrdf_load_stackoverflow)
FR (1) FR2167458B1 (enrdf_load_stackoverflow)
GB (1) GB1334331A (enrdf_load_stackoverflow)
IT (1) IT953395B (enrdf_load_stackoverflow)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4008843A (en) * 1974-04-29 1977-02-22 Asahi Glass Co., Ltd. Apparatus for sealing tubes
US4575330A (en) * 1984-08-08 1986-03-11 Uvp, Inc. Apparatus for production of three-dimensional objects by stereolithography
US4738815A (en) * 1986-01-27 1988-04-19 Peter Friesen Rotational molding machine and method of molding
US4929402A (en) * 1984-08-08 1990-05-29 3D Systems, Inc. Method for production of three-dimensional objects by stereolithography
US5174943A (en) * 1984-08-08 1992-12-29 3D Systems, Inc. Method for production of three-dimensional objects by stereolithography
US5236637A (en) * 1984-08-08 1993-08-17 3D Systems, Inc. Method of and apparatus for production of three dimensional objects by stereolithography
US5344298A (en) * 1984-08-08 1994-09-06 3D Systems, Inc. Apparatus for making three-dimensional objects by stereolithography
US5554336A (en) * 1984-08-08 1996-09-10 3D Systems, Inc. Method and apparatus for production of three-dimensional objects by stereolithography
US5840348A (en) * 1995-09-15 1998-11-24 Ultrapure Systems, Inc. Automated carbon block molding machine and method
USD969729S1 (en) * 2017-08-04 2022-11-15 Solarisfloat, Lda Support for solar panels

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3423199C1 (de) * 1984-06-22 1985-02-21 Grünzweig + Hartmann und Glasfaser AG, 6700 Ludwigshafen Einrichtung fuer die Durchfuehrung des Vollformgiessverfahrens
FR2595975A1 (fr) * 1986-03-21 1987-09-25 Anisa Sa Procede et installation de rotomoulage
DE19702469A1 (de) * 1997-01-24 1998-07-30 Reinhardt Gmbh Ernst Rotationsformanlage
DE19923162A1 (de) * 1999-05-20 2000-11-30 Mecana S A Maschinenfabrik Sch Verfahren und Vorrichtung zum Herstellen von Gußteilen, insbesondere Aluminiumgußteilen
DE102008010887A1 (de) 2008-02-25 2009-08-27 Ernst Reinhardt Gmbh Rotationsformanlage
GB201619943D0 (en) * 2016-11-25 2017-01-11 Crompton Mouldings Ltd Modular moulding machine

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2681472A (en) * 1951-01-27 1954-06-22 Vinl Cast Inc Molding machine for producing plastic articles
US2957202A (en) * 1957-09-05 1960-10-25 Sun Rubber Co Rotational casting apparatus
US3689191A (en) * 1969-11-26 1972-09-05 Plastic Rotational Moulding Lt Moulding apparatus

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3370323A (en) * 1965-07-14 1968-02-27 Kyowa Kako Kabushiki Kaisha Apparatus for molded plastic products

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2681472A (en) * 1951-01-27 1954-06-22 Vinl Cast Inc Molding machine for producing plastic articles
US2957202A (en) * 1957-09-05 1960-10-25 Sun Rubber Co Rotational casting apparatus
US3689191A (en) * 1969-11-26 1972-09-05 Plastic Rotational Moulding Lt Moulding apparatus

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4008843A (en) * 1974-04-29 1977-02-22 Asahi Glass Co., Ltd. Apparatus for sealing tubes
US5571471A (en) * 1984-08-08 1996-11-05 3D Systems, Inc. Method of production of three-dimensional objects by stereolithography
US5573722A (en) * 1984-08-08 1996-11-12 3D Systems, Inc. Method and apparatus for production of three-dimensional objects by stereolithography
US4929402A (en) * 1984-08-08 1990-05-29 3D Systems, Inc. Method for production of three-dimensional objects by stereolithography
US4575330A (en) * 1984-08-08 1986-03-11 Uvp, Inc. Apparatus for production of three-dimensional objects by stereolithography
US5236637A (en) * 1984-08-08 1993-08-17 3D Systems, Inc. Method of and apparatus for production of three dimensional objects by stereolithography
US5344298A (en) * 1984-08-08 1994-09-06 3D Systems, Inc. Apparatus for making three-dimensional objects by stereolithography
US5554336A (en) * 1984-08-08 1996-09-10 3D Systems, Inc. Method and apparatus for production of three-dimensional objects by stereolithography
US5556590A (en) * 1984-08-08 1996-09-17 3D Systems, Inc. Apparatus for production of three-dimensional objects by stereolithography
US6027324A (en) * 1984-08-08 2000-02-22 3D Systems, Inc. Apparatus for production of three dimensional objects by stereolithography
US5569431A (en) * 1984-08-08 1996-10-29 3D Systems, Inc. Method and apparatus for production of three-dimensional objects by stereolithography
US5174943A (en) * 1984-08-08 1992-12-29 3D Systems, Inc. Method for production of three-dimensional objects by stereolithography
US5630981A (en) * 1984-08-08 1997-05-20 3D Systems, Inc. Method for production of three-dimensional objects by stereolithography
US5762856A (en) * 1984-08-08 1998-06-09 Hull; Charles W. Method for production of three-dimensional objects by stereolithography
US5779967A (en) * 1984-08-08 1998-07-14 3D Systems, Inc. Method and apparatus for production of three-dimensional objects by stereolithography
US5785918A (en) * 1984-08-08 1998-07-28 Seagate Technology, Inc. Method and apparatus for production of three-dimensional objects by stereolithography
US5814265A (en) * 1984-08-08 1998-09-29 3D Systems, Inc. Method and apparatus for production of three-dimensional objects by stereolithography
US4738815A (en) * 1986-01-27 1988-04-19 Peter Friesen Rotational molding machine and method of molding
US5840348A (en) * 1995-09-15 1998-11-24 Ultrapure Systems, Inc. Automated carbon block molding machine and method
USD969729S1 (en) * 2017-08-04 2022-11-15 Solarisfloat, Lda Support for solar panels

Also Published As

Publication number Publication date
DE2206997A1 (de) 1973-08-02
IT953395B (it) 1973-08-10
CA996327A (fr) 1976-09-07
FR2167458A1 (enrdf_load_stackoverflow) 1973-08-24
GB1334331A (en) 1973-10-17
FR2167458B1 (enrdf_load_stackoverflow) 1976-01-16

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