IT1200571B - Automatic thread lifter - Google Patents

Automatic thread lifter

Info

Publication number
IT1200571B
IT1200571B IT19322/82A IT1932282A IT1200571B IT 1200571 B IT1200571 B IT 1200571B IT 19322/82 A IT19322/82 A IT 19322/82A IT 1932282 A IT1932282 A IT 1932282A IT 1200571 B IT1200571 B IT 1200571B
Authority
IT
Italy
Prior art keywords
coils
barrel
housings
clamped
extruder barrel
Prior art date
Application number
IT19322/82A
Other languages
Italian (it)
Other versions
IT8219322A0 (en
Inventor
Natale Chiari
Giuseppe Inverardi
Original Assignee
Mec Tessile Edera S P A Off
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 Mec Tessile Edera S P A Off filed Critical Mec Tessile Edera S P A Off
Priority to IT19322/82A priority Critical patent/IT1200571B/en
Publication of IT8219322A0 publication Critical patent/IT8219322A0/en
Application granted granted Critical
Publication of IT1200571B publication Critical patent/IT1200571B/en

Links

Landscapes

  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

An induction heating appts. for plastics extruders employs induction coils with E-shaped cores. The coils are mounted in a 2-piece housing which is clamped on the extruder barrel by spring tension. The extruder barrel (1) is heated by induction coils (2,2a,3,3a) in which the coil is wound on the central arm (4,4a,5,5a) of an E-shaped laminated iron core. The coils are magnetically coupled to the barrel by an interlayer (6,6a,7,7a) which covers the core. Pairs of coils are mounted in a 2-piece housing (8,9) which is assembled and clamped on the barrel (1) periphery by means of threaded pins (13), carrying washers (15) and nuts (16,17). Disc spring stacks (14) are interposed between the washers (15) and housings (8,9), so that the housings and coils are urged into contact with the barrel by spring pressure. In another embodiment, the appts. may be adapted to a cylindrical extruder barrel.
IT19322/82A 1982-01-27 1982-01-27 Automatic thread lifter IT1200571B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
IT19322/82A IT1200571B (en) 1982-01-27 1982-01-27 Automatic thread lifter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT19322/82A IT1200571B (en) 1982-01-27 1982-01-27 Automatic thread lifter

Publications (2)

Publication Number Publication Date
IT8219322A0 IT8219322A0 (en) 1982-01-27
IT1200571B true IT1200571B (en) 1989-01-27

Family

ID=11156716

Family Applications (1)

Application Number Title Priority Date Filing Date
IT19322/82A IT1200571B (en) 1982-01-27 1982-01-27 Automatic thread lifter

Country Status (1)

Country Link
IT (1) IT1200571B (en)

Also Published As

Publication number Publication date
IT8219322A0 (en) 1982-01-27

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