Hot runner nozzle
US5759595A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 25, 1996 |
| Grant date | Jun 2, 1998 |
| Priority date | — |
| Expiry date | Jan 25, 2016 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C2045/2748
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A hot runner (10) with an externally heated material pipe (16) and die tip (26) comprises a pre-mounted heating unit (20) with a sealing body (24) which supports a pipe (40) for a heat sensor (34) in a circumferential segment (46). The sealing body (24) made in particular of brass encloses concentrically an insulated heating coil (23) in a steel pipe (22) which is mechanically protected by a partly sleeve-shaped retaining element (42). For example the sensor pipe (40) is supported in the sealing body (24) and is positively and/or adhesively retained between the edges of peripheral ends of a perforated sheet (42). The steel pipe 22) has a lateral recess (44) for inserting the connection points (36) of the heat sensor (34). The material pipe (16) is insertable into the heating device (20) and is able to conduct heat with the close positioning of its shaft (17) against the inner wall (25).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.