Compaction device for a spinning machine

Patent metadata

Field	Value
Publication number	US-9347151-B2
Application number	US-201214234800-A
Country	US
Kind code	B2
Filing date	Jun 29, 2012
Priority date	Jul 25, 2011
Publication date	May 24, 2016
Grant date	May 24, 2016

Abstract

A compacting unit for compacting a fiber composite supplied by a drafting unit of a spinning machine has a beam on which at least one suction drum equipped with a suction zone is rotatably mounted on an axle. A clamping roller mounted on the beam is in contact with the suction drum to form a clamping line at the end of the suction zone under the action of a pressure element mounted on the beam. The clamping roller is mounted so it is rotationally movable on a pressure arm that is equipped with a spring element and is mounted on the beam so it can pivot over a pivot axis.

First claim

The invention claimed is:

1. A compacting unit for compacting a fiber composite supplied by a drafting unit of a spinning machine, the compacting unit comprising:
a beam;
at least one suction drum having a suction zone, the suction drum rotatably mounted on the beam via an axle;
a clamping roller mounted on the beam so as to form a clamping line with the suction drum at an end of the suction zone;
the clamping roller mounted via an axle so as to be rotationally movable on a pressure arm, the pressure arm pivotally mounted on the beam at a pivot axis; and
a spring element mounted on the pressure arm to press the clamping roller against the suction drum at the clamping line.

2. The compacting unit as in claim 1 , wherein the spring element is mounted between a pivot axis of the pressure arm and an axis of rotation of the clamping roller.

3. The compacting unit as in claim 1 , further comprising a stop disposed on the beam so as to contact and hold the pressure arm in a pivoted center position in which the axle of the clamping roller lies adjacent to a plane through the axle of the suction drum and the pivot axis of the pressure arm in an operational position of the compacting unit on a spinning machine.

4. The compacting unit as in claim 1 , comprising two of the suction drums coaxially arranged with respective clamping rollers and rotatably mounted on a common pressure arm along a common rotational axle.

5. The compacting unit as in claim 4 , wherein the pressure arm comprises a U-shaped receptacle oriented towards the suction drums for receipt of the clamping roller rotational axle.

6. The compacting unit as in claim 5 , wherein the receptacle has a length in a longitudinal direction of the pressure arm that is greater than a diameter of the clamping roller rotational axle, and further comprising a ram element that extends into the receptacle and is acted upon by the spring element at a first end and engages the clamping roller rotational axle at an opposite end.

7. The compacting unit as in claim 6 , wherein the receptacle has an opening with an inside clearance dimension that is smaller than a diameter of the clamping roller rotational axle that is received within the receptacle.

8. The compacting unit as in claim 7 , wherein the receptacle is made of an elastic material that allows insertion of the clamping roller rotational axle through the opening of the receptacle.

9. The compacting unit as in claim 7 , wherein a sum of a length of the ram element extending into the receptacle under load of the spring element and the diameter of the clamping roller rotational axle received in the receptacle is larger than an internal longitudinal length of the receptacle from the opening to an internal end of the receptacle.

10. The compacting unit as in claim 1 , wherein the pressure arm comprises an axle at the pivot axis that extends beyond each side of the pressure arm and is received in opposing guides on the beam by which the pressure arm is guided when pivoted.

11. The compacting unit as in claim 10 , further comprising elastic locking elements mounted at the guides that lock the pressure arm axle in a pivoted position.

12. The compacting unit as in claim 11 , wherein the locking elements are in an elastic mount and movable to a position to release the pressure arm axle from the guides.

13. The compacting unit as in claim 10 , wherein the pressure arm is made of a plastic material and the spring element is disposed within an encapsulated space of the pressure arm.

Assignees

• Malina Ludek
• Nägeli Robert
• Schneider Gabriel
• Rieter Ag Maschf

Inventors

• Malina Ludek
• Nägeli Robert
• Schneider Gabriel

Classifications

• D01H5/72 Primary

  Fibre-condensing guides · CPC title

• D01H5/74

  Rollers {or roller bearings} · CPC title

• D01H1/025

  with a condensing device between drafting system and spinning unit · CPC title