Yarn head rotor

Abstract

A yarn head rotor 1 for a cabling machine, having several deflection rollers 2 for evening the yarn tension of two yams being twisted, each deflection roller being rotatably mounted on a pivot axis 5 at right angles to the rotor axis of the yarn head rotor 1 and guided across the two yarns. The deflection roller 2 is mounted in the yarn head rotor 1 by bearings 6 at both ends of the deflection roller 2, wherein the two ball bearings 6 are each enclosed by a housing 7 of the yarn head rotor 1, which is closed with a cover 8, and yarn guiding eyelets 9, guiding the inner and outer yarns 17, are arranged upstream of the deflection roller 2 in such a way that they supply both yarns of the deflection roller between the two ball bearings 6 to the yarn head rotor 1.

Claims

1. Yarn head rotor for a cabling machine, comprising several deflection rollers for evening out the yarn tension of two yarns to be twisted, each of the deflection rollers being rotatably mounted on a pivot axis arranged at right angles to a rotor axis of the yarn head rotor and over which the two yarns are guided, characterized in that, at least one deflection roller is mounted in the yarn head rotor by bearings at both ends of the at least one deflection roller, that two of the bearings are each enclosed by a housing of the yarn head rotor wherein the housing is closed with a cover and a gap sealed with a lid is located between the bearings of the at least one deflection roller and the cover, and that yarn guiding eyelets, guiding inner and outer yarns, are arranged upstream of the at least one deflection roller in such a way that inner and outer yarns are supplied to the at least one deflection roller between the two bearings of the yarn head rotor, wherein the lid and the cover are two separate components.

2. Yarn head rotor according to claim 1, characterized in that the cover corresponds with a grease seal for the housing of the yarn head rotor.

3. Yarn head rotor according to claim 1, characterized in that precisely two deflection rollers having pivot axes are arranged in the yarn head rotor and that both pivot axes of the deflection rollers are arranged on a plane formed transverse or parallel to the rotor axis.

4. Yarn head rotor according to claim 3, characterized in that the yarn guiding eyelets which guide the two yarns are aligned in such a way that the yarn guiding eyelets guide the two yarns to different deflection rollers.

5. Yarn head rotor according to claim 1, characterized in that the cover of the housing can be used for positioning the bearings with the deflection rollers.

6. Yarn head rotor according to claim 3, characterized in that the housing is provided for the bearings of the end of the two deflection rollers.

7. Yarn head rotor according to claim 2, characterized in that precisely two deflection rollers having pivot axes are arranged in the yarn head rotor and that both pivot axes of the deflection rollers are arranged on a plane formed transverse or parallel to the rotor axis.

8. Yarn head rotor according to claim 1, characterized in that the bearings are glide bearings.

9. Yarn head rotor according to claim 1, characterized in that a portion of the gap extends in the radial direction with respect to the pivot axis, and the lid is configured so that grease flows within the gap to the bearing point when the bearings are in a resting position.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) The invention will now be described in more detail with reference to the embodiment examples illustrated in the drawings, wherein:

(2) FIG. 1 is a schematic view of a workstation of a cabling machine;

(3) FIG. 2 schematically depicts an enlarged view of a cord regulator according to the invention with two deflection rollers;

(4) FIG. 3 schematically depicts an enlarged view of an alternative cord regulator with a deflection roller;

(5) FIG. 4 schematically depicts various arrangements of the pivot axis of the deflection rollers;

(6) FIG. 5 schematically depicts the double-sided mounting of a deflection roller with a rotating inner ring;

(7) FIG. 6 schematically depicts the double-sided mounting of a deflection roller with a rotating outer ring.

DETAILED DESCRIPTION OF THE INVENTION

(8) The construction of a workstation 14 of a cabling machine is illustrated in a schematic view in FIG. 1. The workstation 14 comprises a creel 15, which serves for receiving at least one second feed package 16, from which a so-called outer yarn 17 is pulled.

(9) The workstation 14 further comprises a cabling spindle 18, driven by a spindle drive 19. The spindle drive 19 can be a motor that drives the cabling spindle 18 directly, or an indirect drive, for example a belt drive. The cabling spindle 18 bears a first feed package 21 on a yarn plate 20 arranged on the cabling spindle 18, from which a so-called inner yarn 22 is pulled overhead, which is supplied to a yarn head rotor 1 above the cabling spindle 18.

(10) The outer yarn 17 pulled from the second feed package 16 is supplied to a regulatable yarn tension influencing device 23 arranged between the creel 15 and the cabling spindle 18 in the yarn run, with which the yarn tension is varied. For this the yarn tension influencing device 23 is connected with a controller 24, which regulates the yarn tension generated by the device 23. The yarn tension influencing device 23 is located upstream from the yarn plate 20 viewed in the yarn pulling direction. The outer yarn 17 then runs through the spindle drive 19 in the pivot axis and leaves the spindle drive 19 below the yarn plate 20. The outer yarn 17 is deflected tangentially to the yarn plate 20 by means of a deflector and runs up to the outermost edge of the yarn plate 20. The outer yarn 17 is deflected upwards at the edge of the yarn plate 20, so that the outer yarn 17 runs around the first feed package 21 along the cabling spindle 18 whilst forming a free yarn balloon B. The yarn head rotor 1 determines the height of the developing free yarn balloon B in that the outer yarn 17 pulled from the second feed package 16 and the inner yarn 22 pulled from the first feed package 21 are joined. The cabling, or also joining point, where the two yarns 22, 17 are joined and form the twisted yarn 25, is located in the yarn head rotor 1.

(11) An extraction device 26 is arranged above the cabling point, with which the yarn 25 is pulled off and supplied to a winding device 28 via a balancing element 27. The winding device 28 comprises a drive roller 29 and a bobbin 30 driven by the drive roller 29 by means of friction.

(12) FIG. 2 shows a yarn head rotor 1 for a cabling machine, comprising two deflection rollers 2. The yarn head rotor 1 is equipped with four bearing bores 4 arranged vertically to the axis of rotation 3 of the yarn head rotor 1. Two opposing bearing bores 4 each serve for receiving one pivot axis 5, mounted in the respective bearing bores 4 by means of two ball bearings 6. The pivot axes 5 are each designed as a deflection roller 2. This means that the deflection rollers 2 are each mounted in a housing 7 of the yarn head rotor 1 on both sides, which is closed by a cover 8.

(13) A guiding eyelet 9 each for guiding the inner 22 and outer yarn 17 is envisaged below the deflection roller 2 at the lower end of the yarn head rotor 1. The inner 22 and outer yarn 17 enter the yarn head rotor 1 through these guiding eyelets 9.

(14) The inner yarn 22 pulled from the first feed package 21 arranged in the bobbin bucket runs through the guiding eyelet 9 arranged in the central area of the threat head rotor 1 into the yarn head rotor 1 and embraces a deflection roller 2. From there the inner yarn is routed downward and S-shaped to embrace the other deflection roller 2. The inner yarn 22 is then supplied from this deflection roller 2 in the direction of an upper guiding eyelet 10 to the joining point, where both are twisted into individual twisting yarns.

(15) The outer yarn 17 pulled from a second feed package arranged in the creel 15 rotates as a yarn balloon B around the bobbin bucket and enters the yarn head rotor 1 through the guiding eyelet 9 arranged in the edge area of the yarn rotor 1. The outer yarn 17 embraces the deflection rollers 2 in an S shape, but in the opposite order as the inner yarn 22, in the same way as described above with regard to inner yarn 22 in order to then also be supplied to the joining point in the direction of the upper eyelet eye 10.

(16) The individual yarns twisted together with each other leave the yarn head rotor 1 as a twisted yarn 25 or cord and are then wound up.

(17) FIG. 3 shows an alternative embodiment of the yarn head rotor 1. The only difference from FIG. 2 already described is that the yarn head rotor 1 comprises just one deflection roller 2 in this example, which is embraced by the inner yarn 22 as well as the outer yarn 17. The single deflection roller 2 is also mounted on both sides. As the function of both yarn head rotors 1 is otherwise identical we omit repetition at this point refer to the description of FIG. 2.

(18) FIG. 4 schematically shows a different arrangement of the deflection roller 2, wherein the pivot axes 5 of the deflection rollers 2 lie on one plane. Reference number 31 identifies a vertical arrangement of the pivot axes 5 of the deflection rollers 2 in relation to the axis of rotation 3 of the yarn head rotor 1. Reference number 32 indicates the formation of an alignment of the pivot axes 5 that is parallel to the axis of rotation 3. A plane of the pivot axis 5 arranged at a defined angle to the axis of rotation 3 is identified with reference number 33. The angle can be selected anywhere between the vertical or parallel arrangement of the pivot axes 5 in relation to the axis of rotation 3 here.

(19) FIG. 5 schematically shows the double-sided mounting of an example of a deflection roller 2. A ball bearing 6 is envisaged at both ends of the pivot axis 5 for the rotatable mounting of the inner ring of the deflection roller 2.

(20) Grease is thrown towards the outside during operation due to centrifugal force generated by the rotation of the yarn head rotor 1. The housing 7 of the yarn head rotor 1 is closed with a cover 8 on the outside. The cover 8 defines the working position of the bearing point of the ball bearing 6, secures the bearing point against centrifugal force generated, and also supports the sealing of the bearing point of the ball bearing 6.

(21) Reference number 11 identifies a grease seal, in this case an O-ring. The bearing point of the ball bearing 6 is sealed together with the lid 13. The gap 12 is located in the lid 13, so that grease accumulated there will for example be in viscosity connection with the grease in the bearing point when the yarn head 1 stands still, and will therefore grease the function points. The grease thus remains near the ball bearing 6 or the rolling elements.

(22) FIG. 6 shows an embodiment example of a glide bearing 34 with a rotating outer ring. The mounting of the deflection roller 2 forms a mounting unit with the pivot axis 5. As already described for FIG. 5, grease is thrown towards the outside during operation due to the centrifugal force generation by the rotation of the yarn head rotor 1. The lid 13 installed between the housing 7 of the yarn head rotor 1 and the deflection roller 2 prevents the fat from leaving the bearing point. Grease collected on the lid 13 flows back into the bearing point via the viscosity connection when the process is interrupted and the glide bearing 34 stand still, and thus greases these automatically. The installed grease seal 11 seals the lid 13 against a direct escape of grease. Alternatively the grease seal 11 can also be integrated into the lid 13 in that the grease seal 11 is made from a deformable material, such as for example rubber.

(23) It will therefore be readily understood by those persons skilled in the art that the present invention is susceptible of a 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 embodiment, adaptations, variations, modifications and equivalent arrangements, the present invention being limited only by the claims appended hereto and the equivalents thereof.