WO2015051271A1 - Moulage par rotation à matrice double - Google Patents

Moulage par rotation à matrice double Download PDF

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Publication number
WO2015051271A1
WO2015051271A1 PCT/US2014/059095 US2014059095W WO2015051271A1 WO 2015051271 A1 WO2015051271 A1 WO 2015051271A1 US 2014059095 W US2014059095 W US 2014059095W WO 2015051271 A1 WO2015051271 A1 WO 2015051271A1
Authority
WO
WIPO (PCT)
Prior art keywords
cavities
molding
assembly
final molded
another
Prior art date
Application number
PCT/US2014/059095
Other languages
English (en)
Inventor
Timothy Francis O'BRIEN
Daniel Vern Beckley
Anthony John POVINELLI
Lonnie ADKINS
Original Assignee
Magna International Inc.
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 Magna International Inc. filed Critical Magna International Inc.
Publication of WO2015051271A1 publication Critical patent/WO2015051271A1/fr

Links

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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/0053—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor combined with a final operation, e.g. shaping
    • B29C45/006—Joining parts moulded in separate cavities
    • B29C45/0062—Joined by injection moulding
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/03—Injection moulding apparatus
    • B29C45/04—Injection moulding apparatus using movable moulds or mould halves
    • B29C45/0441—Injection moulding apparatus using movable moulds or mould halves involving a rotational movement
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/0053—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor combined with a final operation, e.g. shaping
    • B29C45/006—Joining parts moulded in separate cavities
    • B29C2045/0063—Joining parts moulded in separate cavities facing before assembling, i.e. bringing the parts opposite to each other before assembling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2077/00—Use of PA, i.e. polyamides, e.g. polyesteramides or derivatives thereof, as moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2309/00—Use of inorganic materials not provided for in groups B29K2303/00 - B29K2307/00, as reinforcement
    • B29K2309/08—Glass

Definitions

  • the present invention relates to a process and molding assembly operable for manufacturing a final assembly having a hollow portion.
  • a process and molding assembly is desired which is operable for molding a final assembly that reduces or eliminates these known disadvantages, including molding time, and also that eliminates secondary processing.
  • the present invention is directed to a process and molding assembly operable for molding at least two product halves having at least one seal into a final assembly simultaneously.
  • the molding assembly includes at least two multi-cavity rotational sections and at least two stationary cores operable to mold a final assembly that has the two halves that are sealed together and form at least one hollow portion.
  • the present invention eliminates secondary processing and also bonds the at least two product halves together while using a press or main mold.
  • a main mold having a first half and a second half.
  • Each of the first and second halves include a rotatable section that is capable of selectively rotating at least one pair of part cavities.
  • the first half of the main mold has at least two first cavities of a first part which selectively rotate at each cycle and also at least one first stationary core of a second part.
  • the second half of the main mold has the opposite; at least two second cavities of the second part which selectively rotates at each cycle and at least one second stationary core of the first part.
  • At each cycle of the press at least one first part, at least one second part, and at least one seal, preferably, at least two seals, are molded using simultaneous shots of at least one material.
  • Fig. 1 is an exploded view of a final molded assembly having a first part, second part, and bonding features, in accordance with the present invention
  • Fig. 2 is a perspective view of the final molded assembly, in accordance with the present invention.
  • Fig. 3 is a top plan view depicting a molding assembly schematic with portions removed for clarity, in accordance with the present invention.
  • Fig. 4 is a cross sectional view of the molding assembly of Fig. 3 in a closed position with the first part, second part, and final molded assembly with seals formed therein, in accordance with the present invention.
  • a process and molding assembly operable for molding at least two part halves and seal of a final molded assembly simultaneously and that eliminates secondary processing is provided.
  • the final molded assembly is a molded structural hollow component.
  • An injection press is used to mold at least three shots of material at a time, e.g., for a first part half, second part half, and bonding shot(s).
  • the present invention is operably suitable for various hollow part applications and adjustable depending upon particular applications. Referring generally to Figures 1 - 4, a process operable for molding at least two parts and a seal of a final molded assembly 10 simultaneously and that eliminates secondary processing and a molding assembly for same, in accordance with the present invention is illustrated.
  • Fig. 3 a top plan view depicting a molding assembly schematic to illustrate an exemplary molding assembly and process is shown.
  • an exemplary final molded assembly shown generally at 10, having a first part 12 bonded to a second part 14 by at least one strip of material, preferably, at least two strips of material 16. Most preferably, at least two bonding shots 16 of material form a seal and bonds the first and second parts 12,14 together in at least two locations.
  • the first part 12 has at least one pair of first flange portions 18 and the second part 14 has at least one pair of second flange portions 20. At least one pair of recesses 22 or notches are formed at least partly along the edge of the flange portions 20 of the second part 14.
  • the bottom surface of the first flange portions 18 of the first part 12 are substantially planar.
  • first and second pairs of flange portions 18,20 of the first and second parts 12,14 are aligned and brought into juxtaposed position, a pair of channels 24 is thereby formed along the edge of both sides of the final molded assembly 10.
  • the bonding shots 16 or seals are located within the pair of channels 24 to bond the flange portions 18,20 of the first and second parts 12, 14 to one another forming the final molded assembly 10.
  • the first part is a top part and the second part is a bottom part in the final molded assembly 10.
  • the first and second parts 12,14 also have a centrally located first and second curved portion 26,28, respectively, such that when the first and second parts 12, 14 are bonded together a hollow portion 30 is provided.
  • the hollow portion 30 extends along the longitudinal axis of the final molded assembly 10 and is open on both ends. It is appreciated that alternatively shaped one or more first and second parts 12, 14 are contemplated suitable for creating a hollow structure, dependent upon particular applications.
  • the molding assembly 100 has a main mold including a first half, generally shown at 102, having at least two first cavities, generally shown at 104, and a second half, generally shown at 106, having at least two second cavities, generally shown at 108.
  • the first half 102 also includes a first rotatable section, generally shown at 1 10, having the first cavities 104 operably mounted or integrally formed therein.
  • the second half 106 also includes a second rotatable section, generally shown at 1 12, having the second cavities 108 operably mounted or integrally formed therein.
  • the first half 102 further includes at least one first stationary core, generally shown at 1 14, and the second half 106 further includes at least one second stationary core, generally shown at 116.
  • the first stationary core 1 14 is operably shaped, e.g., to include a protruding curved portion and protruding edge portions, such that when the press is closed the first stationary core 1 14 operably protrudes a predetermined amount into another one of said at least two second cavities 108, e.g., the outer second cavity on the rotary table 1 12, and material is injected into that second cavity 108 to form the second part 14.
  • the second stationary core 1 16 is operably shaped, e.g., to include a protruding curved portion, such that when the press is closed the second stationary core 116 operably protrudes a predetermined amount into another one of said at least two first cavities 104, e.g., the outer first cavity 104 on the rotary table 1 12, and material is injected into that first cavity 104 to form the first part 12.
  • the first and second rotatable sections 1 10, 12 are operably coupled within the press to selectively rotate the at least two first cavities and at least two second cavities, respectively, in unison when the press is not closed.
  • the first and second rotatable sections 1 10,1 12 are rotary tables operably configured for rotating the cavities a predetermined amount, e.g., rotating each cavity 360 degrees at 180 degree increments, as will be explained in greater detail below.
  • the rotatable sections 1 10, 1 12 are located on operably spaced adjacent parallel planes, e.g., providing an upper rotary table and lower rotary table, and are positioned to provide a predetermined amount of overlap relative to each other.
  • a central section, generally shown at 122, of the molding assembly 100 is where the two rotatable sections 1 10,1 12 overlap.
  • the first part 12 is selectively injection moldable within the at least two first cavities 104 and the second part 14 is selectively injection moldable within the at least two second cavities 108.
  • the first and second parts 12,14 e.g., one first part and one second part, remain with the respective cavities when the press is opened after molding and as the first and second rotatable sections 1 10,1 12 rotate to the overlapping position.
  • the first half 102 of the molding assembly 100 has at least two first cavities 104 for the first part 12 which selectively rotate (R in Fig.
  • the first and/or second body portion 118,120 are/is operably coupled to an actuator and control unit to selectively open and close the press.
  • the first and second rotatable sections 1 10,1 12 When opened a predetermined amount to an open position, the first and second rotatable sections 1 10,1 12 have clearance to rotate unobstructed.
  • one of the at least two first cavities 104 and one of the at least two second cavities 108 overlap and align with one another at the central section 122, and since these cavities already contain a prior formed first and second part 12, 14, these cavities are positioned such that the first and second parts 12,14 are in contact when the press is in this closed position for bonding.
  • closed to a closed position see Fig.
  • the first stationary core 114 and another one of the at least two second cavities 108 are aligned and operably positioned for injection of molten material into the outer second cavity 108 to form the second part 14.
  • the second stationary core 1 16 and another one of the at least two first cavities 104 are also aligned and operably positioned for injection of molten material, preferably the same material as the second part 14, into the first cavity 104 to form the first part 12.
  • At each cycle of the press at least one first part, at least one second part, and at least one seal, preferably, at least two seals are molded using simultaneous shots of materials.
  • the central section 122 of the mold assembly 100 where the first and second rotatable sections 110,1 12 overlap is where the two halves 12, 14 are sealed together.
  • the first and second rotatable sections 1 10, 1 12 are operable to rotate in unison and align one of the first cavities 104 containing a first part 12 with one of the second cavities 108 containing a second part 14.
  • the press is operably closed, e.g., by actuation of the first and/or second body portions 118, 120, bringing the first and second parts 12,14 into contact at the overlapping position and material is injected into the pair of channels 24 to bond the parts forming the final molded assembly 10.
  • the molding assembly 100 has an ejector operable to eject the final molded assembly 10 from the central section 122 of the molding assembly 100.
  • one first part, one second part, and two seals 16 are molded; preferably, using glass-filled (GF) Nylon for each of the three simultaneous shots.
  • GF glass-filled
  • additional cavities and arrangements suitable for molding two or more first parts, second parts and bonding shots for two or more final molded assemblies 10 simultaneously is contemplated.
  • An exemplary molding sequence includes molding of a plurality of parts simultaneously in the molding assembly 100.
  • the press is then closed.
  • material preferably, the same material, is simultaneously injected into the first cavity 104 of the first part 12 at position "1" and into the second cavity 108 of the second part 14 at position "2".
  • the molding assembly 100 is then moved to the open position.
  • the first part 12 remains with the first cavity 104 on the upper rotatable section 110 and the second part 14 remains with the second cavity 108 on the lower rotatable section 112.
  • the first and second rotatable sections 110, 112 are rotated the same predetermined amount, e.g., 180 degrees clockwise, bringing the first and second cavities 104,108 with the first and second parts 12,14 into alignment at position "3" of the central section 122 where the first and second rotatable sections 110,112 overlap.
  • the press is then moved to the closed position.
  • Material preferably, the same material, is simultaneously injected into the first cavity 104 of the first part 12 at position "1", into the second cavity 108 of the second part 14 at position "2", and additionally into the channels 24 of the molded assembly at position "3".
  • This bonding shot 16 delivered into the channels 24 at position "3" creates a seal along both edges of the final molded assembly 10.
  • the press is then moved to the open position.
  • the final molded assembly 10 is operably ejected from position "3".
  • the sequence is then repeated, with the first step being the first and second rotatable sections 1 10, 1 12 are rotated the same predetermined amount, e.g., both 180 degrees clockwise or counterclockwise, bringing the first and second cavities 104,108 with the molded first and second parts 12, 14 into alignment at position "3" of the central section 122, while bringing the now empty first and second cavities 104,108 back to position "1 " and position "2", respectively.
  • the first step being the first and second rotatable sections 1 10, 1 12 are rotated the same predetermined amount, e.g., both 180 degrees clockwise or counterclockwise, bringing the first and second cavities 104,108 with the molded first and second parts 12, 14 into alignment at position "3" of the central section 122, while bringing the now empty first and second cavities 104,108 back to position "1 " and position "2", respectively.
  • the final molded assembly 10 can have any other configuration suitable for molding at least two parts and a seal in accordance with the present invention to provide a hollow portion and that eliminates secondary processing.
  • the final molded assembly 10 most preferably has at least one hollow portion to provide higher structural modulus.
  • the final molded assembly 10 can be used as a structural member to bear larger structural loads and/or be more rigid or stiff, e.g., to support components connected to the final molded assembly 10 or to support attachment to a vehicle and/or carry loads.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

L'invention porte sur un procédé et sur un ensemble de moulage (100) pour le moulage d'au moins deux parties ayant un joint d'un ensemble moulé final (10). Chaque moitié d'un moule principal possède une section de rotation pour la rotation d'une paire de cavités partielles. Une première moitié du moule possède deux premières cavités (104) d'une première partie (12) qui tournent de 180° à chaque cycle, ainsi qu'un premier noyau fixe (114) d'une seconde partie (14). La seconde moitié de l'outil possède un second noyau fixe (116) de la première partie et deux secondes cavités (108) de la seconde partie qui tournent de 180° à chaque cycle. La section centrale de l'ensemble de moulage moule un joint (16) entre la première partie (12) et la seconde partie (16). À chaque cycle de l'ensemble de moulage, une première partie (12), une seconde partie (16) et un joint (16) sont moulés.
PCT/US2014/059095 2013-10-04 2014-10-03 Moulage par rotation à matrice double WO2015051271A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201361886956P 2013-10-04 2013-10-04
US61/886,956 2013-10-04

Publications (1)

Publication Number Publication Date
WO2015051271A1 true WO2015051271A1 (fr) 2015-04-09

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PCT/US2014/059095 WO2015051271A1 (fr) 2013-10-04 2014-10-03 Moulage par rotation à matrice double

Country Status (1)

Country Link
WO (1) WO2015051271A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10245769B2 (en) * 2014-10-09 2019-04-02 U.S. Farathane Corporation Die slide rotational hollow molding assembly for creating an article with a hollow interior
CN110290909A (zh) * 2016-11-22 2019-09-27 阿德维尔技术控股股份公司 用于生产容器的方法
IT202100025511A1 (it) * 2021-10-07 2023-04-07 S I G I T Soc It Gomma Industriale Torino Spa Stampo e metodo per la produzione di manufatti formati da semigusci in materiale termoplastico

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10175230A (ja) * 1996-12-19 1998-06-30 Nissei Plastics Ind Co 中空成形品の射出成形方法及び装置
EP0913241A1 (fr) * 1996-07-03 1999-05-06 Daihatsu Motor Company, Ltd. Procede et dispositif pour fabriquer un corps tubulaire en resine synthetique, et collecteur d'admission en resine synthetique
DE60003117T2 (de) * 1999-06-14 2004-02-05 Société Jean-Pierre Grosfilley Spritzgiessform mit integriertem Zusammenbau

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0913241A1 (fr) * 1996-07-03 1999-05-06 Daihatsu Motor Company, Ltd. Procede et dispositif pour fabriquer un corps tubulaire en resine synthetique, et collecteur d'admission en resine synthetique
JPH10175230A (ja) * 1996-12-19 1998-06-30 Nissei Plastics Ind Co 中空成形品の射出成形方法及び装置
DE60003117T2 (de) * 1999-06-14 2004-02-05 Société Jean-Pierre Grosfilley Spritzgiessform mit integriertem Zusammenbau

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10245769B2 (en) * 2014-10-09 2019-04-02 U.S. Farathane Corporation Die slide rotational hollow molding assembly for creating an article with a hollow interior
US10245768B2 (en) * 2014-10-09 2019-04-02 U.S. Farathane Corporation Die slide rotational hollow molding process and assembly for creating an article with a hollow interior
CN110290909A (zh) * 2016-11-22 2019-09-27 阿德维尔技术控股股份公司 用于生产容器的方法
CN110290909B (zh) * 2016-11-22 2021-11-02 阿德维尔技术控股股份公司 用于生产容器的方法
US11472074B2 (en) 2016-11-22 2022-10-18 Adval Tech Holding Ag Method for producing a container
IT202100025511A1 (it) * 2021-10-07 2023-04-07 S I G I T Soc It Gomma Industriale Torino Spa Stampo e metodo per la produzione di manufatti formati da semigusci in materiale termoplastico
EP4163080A1 (fr) * 2021-10-07 2023-04-12 S.I.G.I.T. - Societa' Italiana Gomma Industriale Torino - SpA Moule et procede de production d'articles formes par des demi-coques en matiere thermoplastique

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