US20070221356A1 - Mold with heat regulation ducts and its realization method - Google Patents

Mold with heat regulation ducts and its realization method Download PDF

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Publication number
US20070221356A1
US20070221356A1 US11/727,245 US72724507A US2007221356A1 US 20070221356 A1 US20070221356 A1 US 20070221356A1 US 72724507 A US72724507 A US 72724507A US 2007221356 A1 US2007221356 A1 US 2007221356A1
Authority
US
United States
Prior art keywords
mold
accordance
grooves
strips
ducts
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.)
Abandoned
Application number
US11/727,245
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English (en)
Inventor
Andrea Rottigni
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.)
Persico SpA
Original Assignee
Individual
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 Individual filed Critical Individual
Assigned to PERSICO S.P.A. reassignment PERSICO S.P.A. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ROTTIGNI, ANDREA
Publication of US20070221356A1 publication Critical patent/US20070221356A1/en
Abandoned legal-status Critical Current

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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
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/02—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means
    • B29C33/04—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means using liquids, gas or steam
    • 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
    • B29C41/34—Component parts, details or accessories; Auxiliary operations
    • B29C41/46—Heating or cooling

Definitions

  • This invention relates to a mold with heat-regulation ducts and to a method for its realization.
  • a first possibility in the case that the mold is made up of a metallic block is to realize drillings at a sufficient distance from the internal surface of the mold and connect the drillings with the external tubes.
  • a second possibility is to realize the mold by melting by inserting in the casting the heat-regulation circuit realized with tubing in a more highly melting material than that of the mold. In this manner the heat-regulation circuit is ‘co-melted’ in the mold.
  • a third known possibility is to realize the mold as a metallic shell going to screw onto the rear thereof another metallic shell which is often a welded sheet metal cover realizing an air space in which to cause the heat-regulation fluid to flow.
  • the general purpose of the present invention is to remedy the above mentioned shortcomings by making available a method for the realization of a mold with heat-regulation channels allowing obtaining a heat-regulated mold in a simple and effective manner without the disadvantages of the known art.
  • a mold including ducts designed to be paths for heat-regulating fluid of the mold and characterized in that the ducts are realized by grooves on the external surface of the mold closed above along their extension by metallic strips.
  • FIG. 1 shows a partially exploded diagrammatic perspective view of part of a mold realized in accordance with this invention
  • FIG. 2 shows shaped sheet metal parts used in the mold of FIG. 1 .
  • FIG. 3 shows a cross section view of a heat-regulation channel of the mold of FIG. 1 .
  • FIG. 1 shows diagrammatically a mold designated as a whole by reference number 10 and advantageously for rotary molding realized in accordance with this invention.
  • the mold 10 includes a mold body 11 (with interior reproducing the shape to be got) on the external surface of which there are grooves 16 for forming channels open on the top.
  • the grooves are formed laterally by ribs 12 placed at an appropriate distance apart and projecting from the external surface of the mold to form the side surfaces of the channels.
  • the channel grooves or ribs can be obtained by mechanical removal of material or directly as melting of the mold body. This can also be done to conform to the technique of realization of the metal mold shell which as for the side walls of the heat-regulation system can be conveniently realized by mechanical processing from a metallic block or by melting. It can be of aluminum.
  • Each channel is closed in segments by metallic strips welded between the ribs.
  • the strips include straight sheet metal bands 13 in the straight sections (cut from a ribbon and possible bent) and from curves of sheet metal handlebar 14 (advantageously cut from a metal sheet), welded over the pairs of ribs which realize the channel sides.
  • the channels end in unions 17 for connection of known means (not shown) for circulation of the heat-regulation fluids (heating and cooling).
  • the material of the bands and curves of suitable thickness can be the same as the ribs.
  • the unions between one strip segment and the other can also be obtained advantageously by welding.
  • FIG. 2 shows as an example the cutting of all the sheet metal curves 14 necessary for realization of the channels of the mold of FIG. 1 .
  • FIG. 3 shows as an example the section of a channeling (designated by 15 ) made up of side ribs 12 between which a band 13 is welded.
  • the ribs have a height from the mold surface greater that the thickness (in particular at least double) and also have thickness which is less (in particular at least half) the distance between two ribs forming the walls of a same channel. This allows optimization of their efficiency in the heat exchange.
  • the advantages obtained by applying this invention are for example the capability of realizing lighter molds than those obtained from the block by drilling and the capability of easily realizing any heat-regulation path even on complex surfaces while also ensuring a constant distance of the latter from the internal surface of the mold.
  • the mold and the heat-regulation circuit can by easily made of the same material with resulting advantages due to the homogeneousness of heat conduction.
  • a mold channeled in accordance with this invention there is better heat exchange between heat-regulation fluid and the metal of the mold.
  • the heat conductivity of the mold is not reduced and, in general, is not conditioned by the presence of piping of material different from that of the mold as happens in known molds equipped with piping incorporated in the melting.
  • the mold and the heat-regulation system being realized of the same material and the surface of the channels being easily accessible.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Moulding By Coating Moulds (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
US11/727,245 2006-03-24 2007-03-26 Mold with heat regulation ducts and its realization method Abandoned US20070221356A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT000557A ITMI20060557A1 (it) 2006-03-24 2006-03-24 Stampo con condotti di termoregolazione e suo metodo di realizzazione
ITMI2006A000557 2006-03-24

Publications (1)

Publication Number Publication Date
US20070221356A1 true US20070221356A1 (en) 2007-09-27

Family

ID=38198048

Family Applications (1)

Application Number Title Priority Date Filing Date
US11/727,245 Abandoned US20070221356A1 (en) 2006-03-24 2007-03-26 Mold with heat regulation ducts and its realization method

Country Status (3)

Country Link
US (1) US20070221356A1 (fr)
EP (1) EP1837148B1 (fr)
IT (1) ITMI20060557A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170106567A1 (en) * 2015-10-14 2017-04-20 Ktx Corporation Mold and manufacturing method thereof
US10814530B2 (en) * 2016-10-12 2020-10-27 Plastigi Mold device for a rotational molding device

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2058121A1 (fr) * 2007-11-07 2009-05-13 Total Petrochemicals Research Feluy Articles rotomoulés multicouches
ITMI20101486A1 (it) * 2010-08-04 2012-02-05 Persico Spa Metodo, apparecchiatura e stampo per lo stampaggio rotazionale di materie plastiche, con riscaldamento elettrico.
IT202100029543A1 (it) 2021-11-23 2023-05-23 Persico Spa Stampo per lo stampaggio rotazionale
IT202100029549A1 (it) 2021-11-23 2023-05-23 Persico Spa Stampo per lo stampaggio rotazionale

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3191225A (en) * 1962-10-30 1965-06-29 American Can Co Apparatus for control of material distrial in blow molded plastic articles

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB829374A (en) * 1956-06-11 1960-03-02 Armstrong Cork Co Improvements in or relating to heat transfer rolls
FR1353594A (fr) * 1963-01-16 1964-02-28 Manuf De Productions Phonograp Moule à disques
JPH0276709A (ja) * 1988-09-13 1990-03-16 Kasei Naoetsu:Kk 金型及びその製造方法
JPH068251A (ja) * 1992-06-24 1994-01-18 Nippon Zeon Co Ltd 金型温調管ユニット
JP2002347104A (ja) * 2001-05-23 2002-12-04 Minoru Kasei Kk ブロー成形用金型装置
US7160090B2 (en) * 2003-10-31 2007-01-09 Michelin Recherche Et Technique S.A. Tire mold with helically extending heating conduit

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3191225A (en) * 1962-10-30 1965-06-29 American Can Co Apparatus for control of material distrial in blow molded plastic articles

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170106567A1 (en) * 2015-10-14 2017-04-20 Ktx Corporation Mold and manufacturing method thereof
US10814530B2 (en) * 2016-10-12 2020-10-27 Plastigi Mold device for a rotational molding device

Also Published As

Publication number Publication date
EP1837148A3 (fr) 2008-05-21
EP1837148A2 (fr) 2007-09-26
EP1837148B1 (fr) 2012-12-05
ITMI20060557A1 (it) 2007-09-25

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Legal Events

Date Code Title Description
AS Assignment

Owner name: PERSICO S.P.A., ITALY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:ROTTIGNI, ANDREA;REEL/FRAME:019165/0623

Effective date: 20070216

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION