DRAFTING SYSTEM UNIT HAVING A WEIGHTING ARM AND A WEIGHTING ARM FOR A DRAFTING SYSTEM UNIT

Abstract

Drafting system unit having a weighting arm and to a weighting arm for a drafting system unit for drafting a fiber band at a workstation of a textile machine, said weighting arm having a support arm and a top roller body, which is detachably mounted on a retaining device connected to the support arm. In order to provide a drafting system having a weighting arm and to provide a weighting arm for a drafting system unit for drafting a fiber band at a workstation of a textile machine, which drafting system and weighting arm can, in a user-friendly manner, be inspected, repaired and/or adapted to the fiber band material to be drafted and allow the top roller bodies to be easily replaced, there is provision for the top roller body to have an actuation section, which protrudes beyond the support arm in longitudinal axis direction of the top roller body.

Claims

1. A weighting arm for a drafting system unit for drafting a fiber band at a workstation of a textile machine, comprising a support arm, and a top roller body, which is detachably mounted on a retaining device connected to the support arm, characterized in that the top roller body has an actuation section, which protrudes beyond the support arm in a longitudinal axis direction of the top roller body.

2. The weighting arm according to claim 1, characterized in that the retaining device has two retainers arranged at a distance from one another on the support arm.

3. The weighting arm according to claim 1, characterized in that the top roller body has, at both ends, actuation sections, which protrude beyond the support arm in the longitudinal axis direction of the top roller body.

4. The weighting arm according to claim 1, characterized in that the actuation section is designed to receive an actuating tool.

5. The weighting arm according to claim 1, characterized in that the actuation section has a surface profile.

6. The weighting arm according to claim 1, characterized in that the actuation section protrudes beyond the support arm in the longitudinal axis direction of the top roller body by up to 15 mm.

7. The weighting arm according to claim 6, characterized in that the actuation section protrudes beyond the support arm in the longitudinal axis direction of the top roller body by up to 10 mm.

8. The weighting arm according to claim 7, characterized in that the actuation section protrudes beyond the support arm in the longitudinal axis direction of the top roller body by up to 5 mm.

9. The weighting arm according to claim 1, characterized in that the retaining device is designed to apply a spring force acting radially on the top roller body in order to rotatably positionally secure the top roller body.

10. The weighting arm according to claim 1, characterized in that the retainers of the retaining device are designed in such a way that the retainers apply a spring force acting radially on the top roller body in order to rotatably positionally secure the top roller body.

11. A drafting system unit for a textile machine, comprising a weighting arm having at least one top roller body, the weighting arm is for the drafting system unit for drafting a fiber band at a workstation of a textile machine, comprising a support arm, and a top roller body, which is detachably mounted on a retaining device connected to the support arm, characterized in that the top roller body has an actuation section, which protrudes beyond the support arm in a longitudinal axis direction of the top roller body.

12. The drafting system unit according to claim 11, characterized in that the drafting system unit has a frame structure, by which the drafting system unit is detachably arranged on a supporting frame of the textile machine,

13. The drafting system unit according to claim 12, characterized in that the drafting system unit is detachably arranged on a supporting frame of the textile machine in a modular way.

14. The drafting system unit according to claim 11, characterized in that two weighting arms are provided, which are connected to one another by a gripping part for joint operation by an operator.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0027] An embodiment example of the present invention is explained below with reference to the drawings. In the drawings:

[0028] FIG. 1 shows a perspective view of two adjacently arranged drafting systems on a textile machine and

[0029] FIG. 2 shows a magnified illustration of a lateral area of a weighting arm of the drafting systems of FIG. 1.

DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0030] The following description of the embodiments of the present invention is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses. The following description is provided herein solely by way of example for purposes of providing an enabling disclosure of the invention, but does not limit the scope or substance of the invention.

[0031] FIG. 1 shows a perspective view of two drafting system units 1, which are arranged adjacent to one another on a textile machine, which is not shown here. The drafting system units 1 have, in particular, a frame structure 10, by means of which the drafting system units 1 according to this preferred embodiment example can be modularly detachably positioned on a supporting frame of the textile machine, which supporting frame, according to this preferred embodiment example, comprises a supporting tube 9. The drafting system unit 1 has two weighting arms 7, which are arranged at a distance from one another and each have a support arm 2 for supporting top roller bodies 5. The weighting arm 7 can be pivoted relative to the frame structure 10, and this is facilitated for an operator by the grasping of a gripping element 8 connecting the weighting arms 7.

[0032] According to this preferred embodiment example, the weighting arms 7 are in particular identical and have, in a fiber band running direction, three retaining devices 3 arranged one after the other. Each of the retaining devices 3 is formed by a retainer 4 arranged on the support arm 2 in question. Two retainers 4, arranged along the fiber band running direction at the same arrangement height and each associated with a support arm 2, are spaced apart from one another transversely to the fiber band running direction and are designed to jointly, more particularly rotatably, and detachably hold a top roller body 5. The top roller body 5 is positionally secured on the two spaced retainers 4 by means of a spring clamping force, which, in the case of removal of the top roller body 5, must be overcome by an operator in order to be able to move the top roller body 5 out of a mounting opening 11 of the retainers 4.

[0033] According to this preferred embodiment example, for this purpose the top roller bodies 5 have, at both ends, actuation sections 6 protruding laterally beyond the edges of the adjacent support arms 2 facing away from one another, which actuation sections can be easily grasped by an operator, in which case the top roller body 5 can be easily removed from and repositioned on the retainers 4.

[0034] According to an alternative embodiment example not shown here, the drafting system unit has only one weighting arm with one support arm, which comprises at least one retaining device for a top roller body. The retaining device can be formed by two retainers, which are spaced apart from one another transversely to the fiber band running direction and function as described above, the two retainers 4 spaced apart from one another being arranged on only one support arm. The top roller body can have, at both ends, actuation sections protruding laterally beyond the edges of the support arm facing away from one another, by means of which actuation sections the top roller body can be installed on or removed from the retainers.

[0035] According to an additional preferred embodiment example, the drafting system unit can have only one weighting arm having two support arms, which each comprise at least one retaining device in an equivalent manner as described above.

LIST OF REFERENCE SIGNS

[0036] 1 Drafting system unit

[0037] 2 Support arm

[0038] 3 Retaining device

[0039] 4 Retainer

[0040] 5 Top roller body

[0041] 6 Actuation section

[0042] 7 Weighting arm

[0043] 8 Gripping element

[0044] 9 Supporting tube

[0045] 10 Frame structure

[0046] 11 Mounting opening

[0047] It will therefore be readily understood by those persons skilled in the art that the present invention is susceptible of broad utility and application. Many embodiments and adaptations of the present invention other than those herein described, as well as many variations, modifications and equivalent arrangements, will be apparent from or reasonably suggested by the present invention and the foregoing description thereof, without departing from the substance or scope of the present invention. Accordingly, while the present invention has been described herein in detail in relation to its preferred embodiment, it is to be understood that this disclosure is only illustrative and exemplary of the present invention and is made merely for purposes of providing a full and enabling disclosure of the invention. The foregoing disclosure is not intended or to be construed to limit the present invention or otherwise to exclude any such other embodiments, adaptations, variations, modifications and equivalent arrangements.