GB1272242A - Apparatus for altering the cross-section of hollow members - Google Patents
Apparatus for altering the cross-section of hollow membersInfo
- 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
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.
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)
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)
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 |
-
1963
- 1963-01-19 DE DE19631479073 patent/DE1479073B2/en active Pending
-
1969
- 1969-01-13 GB GB2021/69A patent/GB1272242A/en not_active Expired
Cited By (1)
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 |
Free format text: FOR 1272242 READ 1271142 IN JOURNAL 5005 PAGE 266 |