GB1272242A - Apparatus for altering the cross-section of hollow members - Google Patents

Apparatus for altering the cross-section of hollow members

Info

Publication number
GB1272242A
GB1272242A GB2021/69A GB202169A GB1272242A GB 1272242 A GB1272242 A GB 1272242A GB 2021/69 A GB2021/69 A GB 2021/69A GB 202169 A GB202169 A GB 202169A GB 1272242 A GB1272242 A GB 1272242A
Authority
GB
United Kingdom
Prior art keywords
mould
segments
core
section
hollow article
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
Application number
GB2021/69A
Inventor
Johann Karp
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.)
Dynamit Nobel AG
Original Assignee
Dynamit Nobel AG
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
Priority to DE19631479073 priority Critical patent/DE1479073B2/en
Application filed by Dynamit Nobel AG filed Critical Dynamit Nobel AG
Priority to GB2021/69A priority patent/GB1272242A/en
Publication of GB1272242A publication Critical patent/GB1272242A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D17/00—Forming single grooves in sheet metal or tubular or hollow articles
    • B21D17/02—Forming single grooves in sheet metal or tubular or hollow articles by pressing
    • 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
    • B29C57/00—Shaping of tube ends, e.g. flanging, belling or closing; Apparatus therefor, e.g. collapsible mandrels
    • B29C57/02—Belling or enlarging, e.g. combined with forming a groove
    • B29C57/04—Belling or enlarging, e.g. combined with forming a groove using mechanical means
    • 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
    • B29C57/00—Shaping of tube ends, e.g. flanging, belling or closing; Apparatus therefor, e.g. collapsible mandrels
    • B29C57/02—Belling or enlarging, e.g. combined with forming a groove
    • B29C57/04—Belling or enlarging, e.g. combined with forming a groove using mechanical means
    • B29C57/06—Belling or enlarging, e.g. combined with forming a groove using mechanical means elastically deformable
    • 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
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/04—Polymers of ethylene
    • B29K2023/06—PE, i.e. polyethylene
    • 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
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/10—Polymers of propylene
    • B29K2023/12—PP, i.e. polypropylene
    • 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
    • B29K2027/00—Use of polyvinylhalogenides or derivatives thereof as moulding material
    • B29K2027/06—PVC, i.e. polyvinylchloride
    • 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
    • B29K2031/00—Use of polyvinylesters or derivatives thereof as moulding material
    • B29K2031/04—Polymers of vinyl acetate, e.g. PVAc, i.e. polyvinyl acetate
    • 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
    • B29K2059/00—Use of polyacetals, e.g. POM, i.e. polyoxymethylene 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
    • B29K2101/00—Use of unspecified macromolecular compounds as moulding material
    • B29K2101/10—Thermosetting resins
    • 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
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/24—Condition, form or state of moulded material or of the material to be shaped crosslinked or vulcanised
    • B29K2105/246—Uncured, e.g. green

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)

Abstract

1,272,242. Tube expanding. DYNAMIT NOBEL A.G. 22 May, 1969 [13 Jan., 1969], No. 2021/69. Heading B5A. [Also in Division B3] Apparatus for altering the cross-sections of hollow, thermally deformable members, having a longitudinal axis, e.g. plastics or metal pipes, comprises a mould having an outer part, a multicomponent inner part which comprises an alternating arrangement of equal numbers of segments of large and smaller size which together form a continuous mould surface, and a conical core engaging with the inner part of the mould and longitudinally displaceable therein so that said longitudinal movement radially displaces the segments to form a continuous core. As shown the apparatus comprises an outer mould part comprising two sections 1 and 7 separated by a cavity 6 for heating fluid, an inner mould section comprising segments 2 and 2a and a core 3. The core and inner mould section are movable relative to each other by a double acting cylinder 4. The core 3 has eight inclined faces each equipped with a groove and dovetails on the segments 2 and 2a engage these grooves. The faces are inclined so that as the core moves into the inner mould part, the segments 2a are forced outwards at a greater rate than segments 2 and force the material to be shaped 9 into contact with the outer mould 7. To ensure even pressing, the inner mould section can be turned relative to the outer and the outer section 1 is preferably hinged to aid removal. When only part of the hollow article is to be shaped, the inner mould section may be shorter than the outer and the material of the hollow article may be forced outwards against a rubber membrane which is forced inwards by the heating fluid, circulating in the cavity 6 of the outer mould section. Preferred materials for the hollow article are the polymers of vinyl chloride, vinyl acetate, ethylene, propylene, butylene, isobutylene, caprolactam and polycondensates of diamines with dicarboxylic acids and of diols with dicarboxylic acids.
GB2021/69A 1963-01-19 1969-01-13 Apparatus for altering the cross-section of hollow members Expired GB1272242A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE19631479073 DE1479073B2 (en) 1963-01-19 1963-01-19 DEVICE FOR CHANGING THE SECTION OF CYLINDRICAL HOLLOW BODIES MADE OF THERMALLY DEFORMABLE MATERIALS
GB2021/69A GB1272242A (en) 1963-01-19 1969-01-13 Apparatus for altering the cross-section of hollow members

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DED0040724 1963-01-19
GB2021/69A GB1272242A (en) 1963-01-19 1969-01-13 Apparatus for altering the cross-section of hollow members

Publications (1)

Publication Number Publication Date
GB1272242A true GB1272242A (en) 1972-04-26

Family

ID=25971566

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2021/69A Expired GB1272242A (en) 1963-01-19 1969-01-13 Apparatus for altering the cross-section of hollow members

Country Status (2)

Country Link
DE (1) DE1479073B2 (en)
GB (1) GB1272242A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2330516A1 (en) * 1975-06-23 1977-06-03 Johansson Arne MOLDING DEVICE FOR SYNTHETIC MATERIALS

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI51064C (en) * 1974-04-11 1976-10-11 Upo Oy Device for providing internal grooves in plastic pipes and tube sections n.
DE2627690C3 (en) 1976-06-21 1981-01-15 Arne Dalstorp Johansson (Schweden) Form ring for forming an inner groove in the end section of a pipe made of thermoplastic material
DE2660348C2 (en) * 1976-06-21 1982-04-22 Arne Dalstorp Johansson Device for forming an internal groove in the end section of a heated pipe made of thermoplastic material
JPS608563A (en) * 1983-06-10 1985-01-17 Seikosha Co Ltd Lead screw for head shift
DE3439212A1 (en) 1984-08-17 1986-02-27 Schöttli AG, Diessenhofen Screw closure with originality safeguard made of plastic and injection mould for producing caps
AT404448B (en) * 1996-06-20 1998-11-25 Schnallinger Regina DEVICE FOR PRODUCING EXHAUST SLEEVES ON PLASTIC PIPES

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2330516A1 (en) * 1975-06-23 1977-06-03 Johansson Arne MOLDING DEVICE FOR SYNTHETIC MATERIALS

Also Published As

Publication number Publication date
DE1479073A1 (en) 1970-04-02
DE1479073B2 (en) 1973-05-30

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees
PCNP Patent ceased through non-payment of renewal fee
PCNP Patent ceased through non-payment of renewal fee

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