FR2360520A1 - METHOD AND APPARATUS FOR MANUFACTURING A TUBE FROM THERMOPLASTIC MATERIAL - Google Patents

METHOD AND APPARATUS FOR MANUFACTURING A TUBE FROM THERMOPLASTIC MATERIAL

Info

Publication number
FR2360520A1
FR2360520A1 FR7720305A FR7720305A FR2360520A1 FR 2360520 A1 FR2360520 A1 FR 2360520A1 FR 7720305 A FR7720305 A FR 7720305A FR 7720305 A FR7720305 A FR 7720305A FR 2360520 A1 FR2360520 A1 FR 2360520A1
Authority
FR
France
Prior art keywords
tube
zone
subjected
manufacture
manufacturing
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.)
Withdrawn
Application number
FR7720305A
Other languages
French (fr)
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.)
Teledyne UK Ltd
Original Assignee
English Electric Valve Co Ltd
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 English Electric Valve Co Ltd filed Critical English Electric Valve Co Ltd
Publication of FR2360520A1 publication Critical patent/FR2360520A1/en
Withdrawn legal-status Critical Current

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
    • B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
    • B29C67/0014—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00 for shaping tubes or blown tubular films
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B13/00—Conditioning or physical treatment of the material to be shaped
    • B29B13/02—Conditioning or physical treatment of the material to be shaped by heating
    • B29B13/023—Half-products, e.g. films, plates
    • B29B13/024—Hollow bodies, e.g. tubes or profiles
    • 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
    • B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
    • B29C55/22—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of tubes
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B23/00—Re-forming shaped glass
    • C03B23/04—Re-forming tubes or rods
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B23/00—Re-forming shaped glass
    • C03B23/04—Re-forming tubes or rods
    • C03B23/047—Re-forming tubes or rods by drawing
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B23/00—Re-forming shaped glass
    • C03B23/04—Re-forming tubes or rods
    • C03B23/07—Re-forming tubes or rods by blowing, e.g. for making electric bulbs
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B23/00—Re-forming shaped glass
    • C03B23/04—Re-forming tubes or rods
    • C03B23/08—Re-forming tubes or rods to exact dimensions, e.g. calibrating
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
  • Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

L'invention a pour objets un procédé et un appareil de fabrication de tubes en verre de diamètres déterminés destinés à la fabrication de tubes à vide électroniques par exemple. Un segment de tube 1 est soumis à une traction par un ressort 4, tout en étant chauffé par un four 5 à chauffage local. L'intérieur du tube 1 est soumis à une pression mesurée en 9. L'allongement du tube 1 est surveillé par un capteur 8 commandant des moyens 6, 7 pour déplacer la source de chaleur 5 le long du tube 1 de manière que, zone après zone, le segment de tube soit allongé sensiblement uniformement sur sa longueur. L'invention trouve son application dans la fabrication de petites séries de tubes à vide électroniques.The objects of the invention are a method and an apparatus for manufacturing glass tubes of determined diameters intended for the manufacture of electronic vacuum tubes for example. A tube segment 1 is subjected to tension by a spring 4, while being heated by a locally heated furnace 5. The interior of the tube 1 is subjected to a pressure measured at 9. The elongation of the tube 1 is monitored by a sensor 8 controlling means 6, 7 for moving the heat source 5 along the tube 1 so that, zone after zone, the tube segment is elongated substantially uniformly along its length. The invention finds its application in the manufacture of small series of electronic vacuum tubes.

FR7720305A 1976-07-31 1977-07-01 METHOD AND APPARATUS FOR MANUFACTURING A TUBE FROM THERMOPLASTIC MATERIAL Withdrawn FR2360520A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3202576A GB1515476A (en) 1976-07-31 1976-07-31 Methods and apparatus for producing tubing

Publications (1)

Publication Number Publication Date
FR2360520A1 true FR2360520A1 (en) 1978-03-03

Family

ID=10331936

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7720305A Withdrawn FR2360520A1 (en) 1976-07-31 1977-07-01 METHOD AND APPARATUS FOR MANUFACTURING A TUBE FROM THERMOPLASTIC MATERIAL

Country Status (5)

Country Link
JP (1) JPS5317609A (en)
DE (1) DE2647154C3 (en)
FR (1) FR2360520A1 (en)
GB (1) GB1515476A (en)
NL (1) NL7706810A (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4298364A (en) * 1980-03-17 1981-11-03 Corning Glass Works Method of making optical fibers having improved core roundness
JPS573726A (en) * 1980-06-09 1982-01-09 Sumitomo Electric Ind Ltd Preparation of glass capillary
JPS6118629A (en) * 1984-07-06 1986-01-27 Kao Corp Receptacle take-out device
JPS62162632A (en) * 1986-01-14 1987-07-18 Sumitomo Electric Ind Ltd Working of glass pipe
JPS62249819A (en) * 1986-04-22 1987-10-30 Daifuku Co Ltd Article handling device using bucket
DE3913875C1 (en) * 1989-04-27 1990-08-09 Heraeus Quarzschmelze Gmbh, 6450 Hanau, De
SE508577C2 (en) * 1995-11-29 1998-10-19 Denjaru Plast Aps Device and method for extending a substance

Also Published As

Publication number Publication date
JPS5317609A (en) 1978-02-17
DE2647154B2 (en) 1979-02-22
DE2647154C3 (en) 1979-10-11
NL7706810A (en) 1978-02-02
DE2647154A1 (en) 1978-02-02
GB1515476A (en) 1978-06-28

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Legal Events

Date Code Title Description
ST Notification of lapse