GB1363469A - Method and apparatus for making hollow tubing - Google Patents
Method and apparatus for making hollow tubingInfo
- Publication number
- GB1363469A GB1363469A GB5980371A GB5980371A GB1363469A GB 1363469 A GB1363469 A GB 1363469A GB 5980371 A GB5980371 A GB 5980371A GB 5980371 A GB5980371 A GB 5980371A GB 1363469 A GB1363469 A GB 1363469A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mandrel
- roller
- tubing
- flexure
- moulds
- 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
- 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
- B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
- B29C53/36—Bending and joining, e.g. for making hollow articles
- B29C53/38—Bending and joining, e.g. for making hollow articles by bending sheets or strips at right angles to the longitudinal axis of the article being formed and joining the edges
- B29C53/48—Bending and joining, e.g. for making hollow articles by bending sheets or strips at right angles to the longitudinal axis of the article being formed and joining the edges for articles of indefinite length, i.e. bending a strip progressively
- B29C53/50—Bending and joining, e.g. for making hollow articles by bending sheets or strips at right angles to the longitudinal axis of the article being formed and joining the edges for articles of indefinite length, i.e. bending a strip progressively using internal forming surfaces, e.g. mandrels
-
- 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
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/20—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of indefinite length
- B29C44/32—Incorporating or moulding on preformed parts, e.g. linings, inserts or reinforcements
- B29C44/322—Incorporating or moulding on preformed parts, e.g. linings, inserts or reinforcements the preformed parts being elongated inserts, e.g. cables
- B29C44/324—Incorporating or moulding on preformed parts, e.g. linings, inserts or reinforcements the preformed parts being elongated inserts, e.g. cables the preformed parts being tubular or folded to a tubular shape
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2009/00—Layered products
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2023/00—Tubular articles
- B29L2023/22—Tubes or pipes, i.e. rigid
- B29L2023/225—Insulated
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Making Paper Articles (AREA)
- Laminated Bodies (AREA)
Abstract
1363469 Automatic control of position ARMSTRONG CORK CO 22 Dec 1971 59803/71 Heading G3R [Also in Divisions B5 and F2] Long lengths of foamed elastomeric tubing comprising foamed plastics 92, Fig. 4A enclosed in a pair 94, 95 of flexible sheaths are constructed on a long mandrel 17 which is fixed at one end, there being control means for detecting and correcting any flexure of the mandrel. The foam 92 comprises polystyrene or polyurethane, and the sheaths 94, 95 comprise paper, foil or plastics sheets. The sheets 94, 95 are lapped and the inner sealed by adhesive, heat, or a hot melt technique when a heat adhesive strip is fed between the lapped edges. Uses include cylindrical or prismatic pipes, ducts or pipe thermally insulating covers. For the latter, the finished tubing is slit longitudinally to form an open side and a hinge (see Fig. 9, not reproduced). General layout. The hollow mandrel 17 is supported at its left end Fig. 1, and, until some tubing is formed, by moulds 52. Flexible sheet material 26 is folded tightly around the mandrel 17 by a guide 25, and heat sealed by an element 25a and roller 25b. Flexible sheet material 30 is folded loosely around the mandrel by a guide 29, and simultaneously foam material is fed by a nozzle 33 into the space between the two sheaths. Foaming and curing is carried out within chair conveyed moulds 52 in an oven, the moulds serving to pull the tubing along the mandrel 17. The flexure of the mandrel is detected by a laser 22 and photo-electric cell 51, which control an aligning device 37. The mandrel; aligning. The aluminium mandrel 17 is supplied internally with warm air 24 that emerges through perforations in the mandrel to aid movement of the tubing. The mandrel 17 with the tubing is engaged by a grooved roller 37 mounted on a spindle 38 and displaceable horizontally and vertically by respective wheel cranks and worms 40, 39. The mandrel internally supports a roller 49, Fig. 7, which opposes roller 37; displacement of roller 37 with respect to roller 49 flexes the mandrel appropriately. An auto reflecting tooling laser 22, Fig. 1, directs a beam internally of the mandrel 17 on to the photo-electric cell 51 comprising a quadratic arrangement X, X', Y, Y', Fig.11. The outputs of opposing pairs XX' and YY' are fed to bridge control circuits 100, 101 that actuate reversible motors 100H, 101V to position the aligning roller 37, Fig. 7, on flexure of the mandrel. Alternatively, the bridge controls 100, 101, Fig.11, deflect meters from zero, the return to zero being effected by manual control of the roller 37 Fig. 7.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB5980371A GB1363469A (en) | 1971-12-22 | 1971-12-22 | Method and apparatus for making hollow tubing |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB5980371A GB1363469A (en) | 1971-12-22 | 1971-12-22 | Method and apparatus for making hollow tubing |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1363469A true GB1363469A (en) | 1974-08-14 |
Family
ID=10484448
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB5980371A Expired GB1363469A (en) | 1971-12-22 | 1971-12-22 | Method and apparatus for making hollow tubing |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1363469A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2138733A (en) * | 1983-01-21 | 1984-10-31 | Hyman Int Ltd | Continuous production of plastics foams |
GB2171168A (en) * | 1985-02-16 | 1986-08-20 | Molins Plc | Fluid mandrel |
EP0270462A1 (en) * | 1986-12-04 | 1988-06-08 | Sonoco Gunther | Process and apparatus for the manufacture of a composite article with a constant cross-section, consisting of a core and an outer envelope, and the resulting composite article |
US20140014271A1 (en) * | 2011-03-24 | 2014-01-16 | Packsys Global (Switzerland) Ltd. | Device for producing tubular structures |
-
1971
- 1971-12-22 GB GB5980371A patent/GB1363469A/en not_active Expired
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2138733A (en) * | 1983-01-21 | 1984-10-31 | Hyman Int Ltd | Continuous production of plastics foams |
GB2171168A (en) * | 1985-02-16 | 1986-08-20 | Molins Plc | Fluid mandrel |
EP0270462A1 (en) * | 1986-12-04 | 1988-06-08 | Sonoco Gunther | Process and apparatus for the manufacture of a composite article with a constant cross-section, consisting of a core and an outer envelope, and the resulting composite article |
FR2607750A1 (en) * | 1986-12-04 | 1988-06-10 | Gunther Sa | METHOD AND APPARATUS FOR MANUFACTURING A COMPOSITE ARTICLE OF CONSTANT SECTION COMPRISING A SOUL AND AN OUTER ENVELOPE AND COMPOSITE ARTICLE THEREOF |
US20140014271A1 (en) * | 2011-03-24 | 2014-01-16 | Packsys Global (Switzerland) Ltd. | Device for producing tubular structures |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |