FR2197712A1 - Safety drag mandrel - maintaining the supporting pressure inside hollow moulded tubes in an extruder - Google Patents

Safety drag mandrel - maintaining the supporting pressure inside hollow moulded tubes in an extruder

Info

Publication number
FR2197712A1
FR2197712A1 FR7231242A FR7231242A FR2197712A1 FR 2197712 A1 FR2197712 A1 FR 2197712A1 FR 7231242 A FR7231242 A FR 7231242A FR 7231242 A FR7231242 A FR 7231242A FR 2197712 A1 FR2197712 A1 FR 2197712A1
Authority
FR
France
Prior art keywords
mandrel
extruder
maintaining
pressure inside
inside hollow
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.)
Granted
Application number
FR7231242A
Other languages
French (fr)
Other versions
FR2197712B1 (en
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.)
Kunststoffwerk & Ebr Ange
Original Assignee
Kunststoffwerk & Ebr Ange
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 DE19712110014 priority Critical patent/DE2110014C3/en
Application filed by Kunststoffwerk & Ebr Ange filed Critical Kunststoffwerk & Ebr Ange
Priority to FR7231242A priority patent/FR2197712A1/en
Priority to GB4083672A priority patent/GB1365781A/en
Priority claimed from CH1355872A external-priority patent/CH540109A/en
Priority to US00298807A priority patent/US3814564A/en
Priority claimed from US00298807A external-priority patent/US3814564A/en
Publication of FR2197712A1 publication Critical patent/FR2197712A1/en
Application granted granted Critical
Publication of FR2197712B1 publication Critical patent/FR2197712B1/fr
Granted 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/90—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article
    • B29C48/901—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article of hollow bodies
    • B29C48/903—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article of hollow bodies externally
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/90—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article
    • B29C48/908—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article characterised by calibrator surface, e.g. structure or holes for lubrication, cooling or venting

Landscapes

  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

The device consists of a mandrel and a valve part which releases the compressed air if the drag chain breaks thus preventing the mandrel shooting out of the chain. The valve section is of a smaller mass but larger projected surface area. Pref. the mandrel has a valve seat at the front and a spring loaded expanding jaw on the rear end.
FR7231242A 1971-03-03 1972-09-04 Safety drag mandrel - maintaining the supporting pressure inside hollow moulded tubes in an extruder Granted FR2197712A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE19712110014 DE2110014C3 (en) 1971-03-03 Stationary drag stopper for extruded hollow profiles that are subjected to internal pressure during calibration
FR7231242A FR2197712A1 (en) 1972-09-04 1972-09-04 Safety drag mandrel - maintaining the supporting pressure inside hollow moulded tubes in an extruder
GB4083672A GB1365781A (en) 1971-03-03 1972-09-04 Safety device for trailing mandrel
US00298807A US3814564A (en) 1971-03-03 1972-10-19 Safety supported piston for extruded tubular elements

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR7231242A FR2197712A1 (en) 1972-09-04 1972-09-04 Safety drag mandrel - maintaining the supporting pressure inside hollow moulded tubes in an extruder
CH1355872A CH540109A (en) 1972-09-15 1972-09-15 Safety drag mandrel - maintaining the supporting pressure inside hollow moulded tubes in an extruder
US00298807A US3814564A (en) 1971-03-03 1972-10-19 Safety supported piston for extruded tubular elements

Publications (2)

Publication Number Publication Date
FR2197712A1 true FR2197712A1 (en) 1974-03-29
FR2197712B1 FR2197712B1 (en) 1975-03-07

Family

ID=27177012

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7231242A Granted FR2197712A1 (en) 1971-03-03 1972-09-04 Safety drag mandrel - maintaining the supporting pressure inside hollow moulded tubes in an extruder

Country Status (1)

Country Link
FR (1) FR2197712A1 (en)

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
NEANT *

Also Published As

Publication number Publication date
FR2197712B1 (en) 1975-03-07

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Legal Events

Date Code Title Description
ST Notification of lapse