IT1200571B - Automatic thread lifter - Google Patents
Automatic thread lifterInfo
- 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
Links
- 230000006698 induction Effects 0.000 abstract 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 239000011229 interlayer Substances 0.000 abstract 1
- 229920003023 plastic Polymers 0.000 abstract 1
- 239000004033 plastic Substances 0.000 abstract 1
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.
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) |
-
1982
- 1982-01-27 IT IT19322/82A patent/IT1200571B/en active
Also Published As
Publication number | Publication date |
---|---|
IT8219322A0 (en) | 1982-01-27 |
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