Claims
- 1. A spinning apparatus for melt spinning a synthetic multifilament yarn, comprisinga spin head which mounts one or more spin packs, with each spin pack comprising a spinneret for forming a plurality of downwardly advancing filaments from a melt delivered thereto, a cooling tube arranged below each of the spin packs for receiving the advancing filaments and being connected to an air stream generator, and with the cooling tube being mounted for reciprocable movement extending in a direction substantially parallel to the downwardly advancing filaments between an operative position adjacent the spin head and a separated position which facilitates servicing, and a sealing unit configured to connect each cooling tube to the spin head in a sealing relationship when the cooling tube is in its operative position, with the sealing unit defining a separating plane arranged on the spin head side and a separating plane arranged on the cooling tube side, and wherein the separating plane on the spin head side includes a surface which is located on the spin pack.
- 2. The spinning apparatus of claim 1 wherein the sealing unit for each cooling tube is configured so as to lie inside a peripheral boundary which is defined by the cross section of the spin pack.
- 3. The spinning apparatus of claim 2 wherein said surface of the separating plane of the sealing unit which is arranged on the spin head side is located on the spinneret of the spin pack.
- 4. The spinning apparatus of claim 2 wherein each spin pack includes a fastening member for securing the spin pack to the spin head, and wherein the surface of the separating plane which is arranged on the spin head side is located on the fastening member.
- 5. The spinning apparatus of claim 4 wherein the fastening member is configured as a threaded sleeve.
- 6. The spinning apparatus of claim 2 wherein the surface of the separating plane arranged on the spin head side is located on an end face of an annular collar which projects from the underside of the spin pack.
- 7. The spinning apparatus of claim 2 wherein the separating plane arranged on the cooling tube side is formed on an end face of the cooling tube which is adjacent the spin head.
- 8. The spinning apparatus of claim 2 wherein the sealing unit comprises a heat insulating material to minimize heat loss from the spin pack toward the cooling tube.
- 9. The spinning apparatus of claim 2 wherein the sealing unit comprises a heat insulating member for thermal insulation and a separate gas sealing element.
- 10. The spinning apparatus of claim 9 wherein the heat insulating member is disposed between the separating plane arranged on the spin head side, and the spin pack.
- 11. The spinning apparatus of claim 9 further comprising a heat dissipating member disposed adjacent the heat insulating member or the gas sealing element.
- 12. The spinning apparatus of claim 9 wherein the heat insulating member is an annular ring which forms a portion of the cooling tube below the separating plane on the cooling tube side.
- 13. The spinning apparatus of claim 9 wherein the separate gas sealing member comprises an annular ring secured to the cooling tube and positioned to engage the spinneret, and the heat insulating member comprises an annular ring which forms a portion of the cooling tube and is located below the gas sealing member.
- 14. A spinning apparatus for melt spinning a synthetic multifilament yarn, comprisinga spin head which mounts a plurality of spin packs, with each spin pack comprising a spinneret for forming a plurality of downwardly advancing filaments from a melt delivered thereto, a cooling tube arranged below each of the spin packs for receiving the advancing filaments and being connected to an air stream generator, and with the cooling tube being mounted for reciprocable movement extending in a direction substantially parallel to the downwardly advancing filaments between an operative position adjacent the spin head and a separated position which facilitates servicing, and a sealing unit configured to connect each cooling tube to the spin head in a sealing relationship when the cooling tube is in its operative position, and wherein the sealing unit comprises an annular seal which lies within a peripheral boundary of the spin pack.
- 15. The spinning apparatus of claim 14 wherein the sealing unit defines a separating plane arranged on the spin head and a parallel separating plane arranged on the cooling tube, and the annular seal is defined by a first surface lying within the separating plane on the spin head and a second surface lying within the separating plane on the cooling tube, and with the first and second surfaces being in face to face engagement when the cooling tube is in its operative position.
- 16. The spinning apparatus of claim 14 wherein the annular seal comprises a heat resistant gasket fixed to the cooling tube and positioned to engage the spin pack.
- 17. The spinning apparatus of claim 16 wherein the annular seal positioned to engage the spinneret of the spin pack, and the sealing unit further comprises an annular heat insulating body which forms a portion of the cooling tube and is located below the annular seal.
Priority Claims (1)
Number |
Date |
Country |
Kind |
100 19 024 |
Apr 2000 |
DE |
|
CROSS REFERENCE TO RELATED APPLICATION
This is a continuation of copending application PCT/EP01/04219, filed Apr. 12, 2001, and designating the U.S.
US Referenced Citations (5)
Foreign Referenced Citations (4)
Number |
Date |
Country |
3406347 |
Oct 1984 |
DE |
0 172 556 |
Feb 1986 |
EP |
406158416 |
Jun 1994 |
JP |
WO 9967450 |
Dec 1999 |
WO |
Continuations (1)
|
Number |
Date |
Country |
Parent |
PCT/EP01/04219 |
Apr 2001 |
US |
Child |
10/226495 |
|
US |