YARN FEED APPARATUS, WORKSTATION OF A CABLING MACHINE AND METHOD FOR FEEDING

Abstract

The invention relates to a yarn feed apparatus for a workstation of a cabling machine for feeding a creel yarn from a feed package arranged on a bobbin creel or from a transport conveyor arranged above the cabling machine to a cabling apparatus equipped with a cabling spindle and/or for feeding a starter yarn from the cabling spindle to the creel yarn, a workstation of a cabling machine for producing a cabling twist and a method for feeding a creel yarn using a yarn feed apparatus of this type.

Claims

1. A yarn feed apparatus (13) for a workstation (2) of a cabling machine (1) for feeding a creel yarn from a feed package (4) of a bobbin creel (3) of the cabling machine (1) or from a transport conveyor arranged above the cabling machine (1) to a cabling apparatus (5) equipped with a cabling spindle and/or for feeding a starter yarn from the cabling spindle of the cabling apparatus (5) to the creel yarn, wherein a creel yarn feed channel (8) with a yarn infeed opening (10) which can be arranged in an area of the bobbin creel (3), in particular in an area above the feed package (4), or in an area extending from an upper section of the cabling machine to the transport conveyor, and a yarn outfeed opening (11) which can be arranged in the area of the cabling apparatus (5), and a compressed air device for generating an air flow directed towards the yarn infeed opening (10) or yarn outfeed opening (11) within the creel yarn feed channel (8).

2. The yarn feed apparatus (13) according to claim 1, wherein the creel yarn feed channel (8) has a single-part or multi-part tubular body (9).

3. The yarn feed apparatus (13) according to claim 2, wherein the tubular body (9) has two or three tube sections (9a, 9b, 9c) adjoining each other at an angle of 90°.

4. The yarn feed apparatus (13) according to claim 2 wherein the compressed air device comprises a stationary injector unit or a mobile manual actuation unit adapted to generate an air flow within the tubular body (9) directed towards the yarn infeed opening (10).

5. The yarn feed apparatus (13) according to claim 2 wherein the tubular body (9) has a connection opening for connecting the compressed air device in the area between the yarn infeed opening (10) and yarn outfeed opening (11), preferably in the area of the yarn outfeed opening (11).

6. The yarn feed apparatus (13) according to claim 1, wherein the tubular body (9) comprises a first tube section (9a) equipped with the yarn infeed opening (10) and a second tube section (9b) connectible to the first tube section (9a), for which at least the first tube section (9a) is equipped with the yarn infeed opening (10) configured to be moved between an operating position and an operation position in which the yarn infeed opening (10) is oriented in the direction of the cabling apparatus (5), in particular in the direction of the feed package (4), configured to be shifted in a direction opposite to that of the transport conveyor.

7. Yarn The yarn feed apparatus (13) according to claim 6, characterised wherein the operating position to the cabling apparatus (5) has a greater distance than the operation position does.

8. The yarn feed apparatus (13) according to claim 6, wherein the compressed air device in the operation position of the tubular body (9) is designed to generate a suction flow directed towards the yarn outfeed opening (11).

9. The yarn feed apparatus (13) according to claim 1, wherein the compressed air device can be actuated by means of a knee lever.

10. The yarn feed apparatus (13) according to claim 1, wherein the yarn outfeed opening (11) is connected to the cabling apparatus (5) such that an air flow directed towards the yarn outfeed opening (11) is guided through a pneumatically threadable yarn brake and the cabling spindle.

11. The workstation (2) of a cabling machine for a yarn feed apparatus (13) according to claim 1 for producing a cabling twist from a creel yarn drawn from a feed package (4) on a bobbin creel (3) or a creel yarn drawn from a holder of a transport conveyor arranged above the cabling machine (1) and an inner yarn drawn from a further feed package (4) on a cabling spindle.

12. Method A method for feeding a creel yarn at a workstation (2) of a cabling machine (1) to a cabling apparatus (5) equipped with a cabling spindle, for a yarn feed apparatus (13) according to claim 1, comprising: generating an air flow directed towards a yarn infeed opening (10) or yarn outfeed opening (11), arranging the starter yarn at the yarn outfeed opening (11) or the creel yarn at the yarn infeed opening (10) whereby the starter yarn or the creel yarn, respectively, is drawn into the yarn outfeed opening (11) or into the yarn infeed opening (10) by means of the generated air flow and is transported within the creel yarn guide channel (8) in the air flow direction and is discharged at the other opening from the yarn outfeed opening and the yarn infeed opening, capturing and connecting the skipped starter yarn to the creel yarn in an area outside the yarn infeed opening (10) or insertion of the creel yarn into the cabling apparatus (5) in an area of the yarn outfeed opening (11).

Description

[0037] In the drawing:

[0038] FIG. 1 shows a schematic front view of a cabling machine with a yarn feed apparatus.

[0039] FIG. 1 shows a schematic front view of a section of a cabling machine 1. Each of these kinds of textile machines has a large number of identical workstations 2 in the area of the machine longitudinal sides of such textile machines.

[0040] Such textile machines also generally feature a drive and operating unit 6 arranged at a machine end, in which drive and operating unit for example the necessary energy devices, various drives and a central control device 7 are arranged.

[0041] Each of the individual workstations 2 of the cabling machine 1 has a bobbin creel 3 for feeding an outer yarn or creel yarn, which serves to accommodate a feed package 4 from which the outer yarn or creel yarn is drawn off.

[0042] In addition, each of the workstations 2 of the cabling machine 1 has, within a cabling device 5, a cabling spindle which is not shown here but which serves to receive a second feed package from which a so-called inner yarn is drawn off, which is wound around by the outer yarn above the cabling spindle.

[0043] For feeding the creel yarn from the feed package 4 to the cabling apparatus 5, each of the workstations 2 has a yarn feed apparatus 13 equipped with a creel yarn feed channel 8, the tubular body 9 being formed from three tubular sections 9a, 9b, 9c, which is positioned at the workstation 2 via a carrier 15 in the area of the bobbin creel 3. A first tube section 9a, which with its free open end forms a yarn infeed opening 10 in the area of the feed package 4, is adjoined by a second tube section 9b, which runs parallel to the longitudinal direction of the machine, both vertically to the first tube section 9a and vertically to the third tube section 9c. The second tube section 9b thus forms a horizontally extending section of the creel yarn feed channel 8. At its end opposite the second tube section 9b, the third tube section 9c forms with its open end a yarn outfeed opening 11 in the area of the cabling apparatus 5, from which the creel yarn can be guided into the cabling apparatus 5 by the operating personnel.

[0044] To prepare for the cabling process, the operating personnel uses a compressed air device not shown here, for example a compressed air gun or a knee-operated injector device, by means of which a starter yarn is transported via the yarn outfeed opening 11 by a suitable air flow to the yarn infeed opening 10, where the starter yarn can be knotted to a free end of the creel yarn and then fed to the cabling process, whereby the creel yarn then passes through the creel yarn feed channel 8.

[0045] In an alternative embodiment not shown here, the creel yarn feed channel 8 is vertically adjustable between an operating position shown in FIG. 1 and an operating position not shown here—with respect to the position of use—wherein, in the operating position, the yarn infeed opening 10 is vertically adjusted in the direction of the take-up package 12 on which the produced twisted yarn is wound, driven by a drive roller 14.

[0046] In the operating position, it is possible for the operating personnel to conveniently transport the free end of the creel yarn arranged on the feed package 4 from the yarn infeed opening 10 to the yarn outfeed opening 11 by means of a compressed air device, for example a manually operated compressed air gun, wherein for this purpose an air flow is generated by the compressed air device starting from the yarn infeed opening 10 to the yarn outfeed opening 11, so that the yarn reaches the yarn outfeed opening 11 by means of the suction flow. The free end of the creel yarn in the area of the yarn outfeed opening 11 can be fed to the cabling apparatus 5 by the operating personnel.

LIST OF REFERENCE SIGNS

[0047] 1 Cabling machine

[0048] 2 Workstation

[0049] 3 Bobbin creel

[0050] 4 Feed package

[0051] 5 Cabling apparatus

[0052] 6 Drive and operation unit

[0053] 7 Control device

[0054] 8 Creel yarn feed channel

[0055] 9 Tubular body

[0056] 9a First tube section

[0057] 9b Second tube section

[0058] 9c Third tube section

[0059] 10 Yarn infeed opening

[0060] 11 Yarn outfeed opening

[0061] 12 Take-up package

[0062] 13 Yarn feed apparatus

[0063] 14 Drive roller

[0064] 15 Carrier