Claims
- 1. A laying head for forming an axially moving elongated product into a helical series of rings, said laying head comprising:a quill rotatable about an axis; a pipe carried on said quill, said laying pipe having an entry end aligned with said axis and arranged to receive said product, and having an intermediate portion defining a curved guide path leading from said entry end to a delivery end spaced radially from said axis and from which said product is discharged as said helical series of rings; a helical support plate projecting outwardly from said quill; a plurality of channel-shaped guide sections supported end to end on and removably secured to said support plate, said guide sections forming a segmented radially outwardly facing helical trough; and a cylindrical shroud surrounding and cooperating with said guide sections to define a radially and axially confined helical extension of said guide path.
- 2. The guide of claim 1 wherein said guide sections are removably secured to said helical support plate.
- 3. The laying head of claim 1 wherein said guide sections are spaced one from the other along the periphery of said support plate.
- 4. The laying head of claim 3 wherein said guide sections are provided with flanges protruding radially inwardly along a flank of said support plate, and wherein said flanges are secured centrally to said flank.
- 5. The laying head of claim 4 wherein said flank has flat mounting surfaces against which said flanges are secured.
- 6. The laying head of claim 5 wherein said flanges are provided with bosses projecting laterally into grooves in said flat mounting surfaces.
- 7. The laying head of claim 1 wherein said guide segments are identical and interchangeable one for the other.
- 8. The laving head of claim 1 wherein said guide segments are formed from a material which has a greater resistance to frictional wear as compared to the resistance to frictional wear of the material of said support plate.
- 9. The laying head of claim 1 wherein said support plate is removably secured to said quill.
- 10. The laying head of claim 4 wherein said flanges are angularly offset with respect to the respective guide sections.
CROSS REFERENCE TO RELATED APPLICATION
This application claims priority of provisional patent application Serial No. 60/340,180 filed on Dec. 14, 2001.
US Referenced Citations (3)
Number |
Name |
Date |
Kind |
4074553 |
Woodrow |
Feb 1978 |
A |
4242892 |
Wykes et al. |
Jan 1981 |
A |
5312065 |
Shore et al. |
May 1994 |
A |
Foreign Referenced Citations (2)
Number |
Date |
Country |
0 554 976 |
Aug 1993 |
EP |
08215751 |
Aug 1996 |
JP |
Provisional Applications (1)
|
Number |
Date |
Country |
|
60/340180 |
Dec 2001 |
US |