Bobbin winding machine

Abstract

A device and a method for winding a roving onto bobbin tubes using a turret winding head is provided. The turret winding head has a turret base plate having a first and a second spindle that are held in the turret base plate and are provided for receiving the bobbin tubes. The turret base plate and the spindles are each provided with their own drive. The longitudinal axes of the spindles are aligned in the vertical direction.

Claims

1. A device for winding a roving onto bobbin tubes, comprising: a turret winding head, the turret winding head further comprising a rotatable turret base plate, the turret base plate having a drive associated therewith; a first spindle and a second spindle disposed on the turret base plate and configured to receive bobbin or flyer tubes thereon, the spindles having a vertically aligned longitudinal axis, the first and second spindles rotatably mounted directly on the turret base; a first drive for the first spindle, and a second drive for the second spindle, the first drive and the second drive being separate from the first spindle and the second spindle, respectively, and independently controlled, the first drive and the second drive stationarily fixed so as not to rotate with the turret base plate; the first drive and the second drive comprising a gear and one of a belt or chain drive connected directly to the respective spindle for direct power transmission to the respective spindle, and a fastening element provided on an upper third of each of the first spindle and the second spindle for secure engagement with a bobbin or flyer tube thereon.

2. The device as in claim 1, wherein the fastening element comprises a pneumatic clamping device.

3. The device as in claim 1, further comprising a traversing device stationarily fixed relative to the turret base plate, the traversing device movable vertically along the longitudinal axis of one of the first or second spindles in an operating winding position depending on a rotated position of the turret base plate.

4. The device as in claim 3, wherein the traversing device is mounted on a machine frame, the turret base plate rotatable relative to the machine frame.

5. The device as in claim 4, wherein the traversing device comprises a pressing finger.

6. The device as in claim 4, wherein the first drive and the second drive are frequency controlled drives.

7. A method for winding a roving onto a bobbin or flyer tube, the method comprising: using a turret winding head that includes a rotatable turret base plate, a first spindle and a second spindle disposed on the turret base plate and configured to receive the bobbin or flyer tubes thereon, the first and second spindles rotatably mounted directly on the turret base, and a first drive for the first spindle, and a second drive for the second spindle, the first drive and the second drive being separate from the first spindle and the second spindle, respectively, and independently controlled, the first drive and the second drive stationarily fixed so as not to rotate with the turret base plate, the first drive and the second drive having a gear and one of a belt or chain drive connected directly to the respective spindle for direct power transmission to the respective spindle, and a fastening element provided on an upper third of each of the first spindle and the second spindle for engagement with a bobbin or flyer tube thereon; rotating the turret base plate to a position wherein the roving is wound onto a bobbin or flyer tube on the first spindle and the second spindle is in a doffer position; removing a full bobbin or flyer tube from the second spindle; placing an empty bobbin or flyer tube onto the second spindle; and when the bobbin or flyer tube on the first spindle is full, rotating the turret base plate to place the first spindle in the doffer position and to place the second spindle in a winding position.

Description

DETAILED DESCRIPTION

(1) Reference will now be made to embodiments of the invention, one or more examples of which are shown in the drawings. Each embodiment is provided by way of explanation of the invention, and not as a limitation of the invention. For example features illustrated or described as part of one embodiment can be combined with another embodiment to yield still another embodiment. It is intended that the present invention include these and other modifications and variations to the embodiments described herein.

(2) The invention is explained in greater detail below based on FIG. 1.

(3) FIG. 1 shows a schematic illustration of a turret winding head. A turret base plate 2 is held and rotatably mounted in a machine frame 20. The turret base plate 2 is arranged horizontally and has a vertical rotational axis 3. The turret base plate 2 is rotated by a drive 4 about the rotational axis 3 in steps of 180, according to arrow 5. A first spindle 6 and a second spindle 11 are held and rotatably mounted in the turret base plate 2. The first spindle 6 is connected to a drive 8 via the rotational axis 7 by a gear and belt/chain drive 21 schematically depicted in FIG. 1. The second spindle 11 is connected to the drive 13 via the rotational axis 12 by a gear and belt/chain drive 22 depicted schematically in FIG. 1. The first and the second spindles 6, 11 are operated independently of each other. Advantageously, the drives 8, 13 of the first and second spindles 6, 11 are equipped with a frequency control.

(4) In the illustration of FIG. 1, the first spindle 6 is in the winding position. An empty bobbin tube 9 is put onto the spindle 6. A roving 1 is wound onto the bobbin tube 9. The roving 1 is wound via the traversing means 10 onto the bobbin tube 9. The traversing means 10 are connected to the machine frame 20 and are held by the latter. The traversing means 10 comprise a movable element which moves up and down along the bobbin tube 9 with a pressing finger 24 resulting in a uniform wrapping of the bobbin tube 9 which rotates about the rotational axis 7.

(5) In the illustration of FIG. 1, the second spindle 11 is in the duffer position. The full bobbin tube has already been removed from the second spindle 11. Removing full bobbin tubes and putting on empty bobbin tubes can be carried out automatically by suitable manipulators or robots. In its upper region, the spindle 11 is provided with a fastening element 14. The fastening element 14 serves for stabilizing a bobbin tube 9 on the spindle 11. An empty bobbin tube 9 is put from above onto the spindle 11 and is subsequently held in a rotationally fixed manner by the fastening element 14. The fastening element 14 can be, for example, a pneumatic clamping device which, after the bobbin tube is put on, is depressurized and thereby undergoes a radial expansion, as a result of which the bobbin tube is firmly clamped on the spindle 11.

(6) When the bobbin tube 9 is provided with a full winding, the turret base plate 2 is rotated by the drive 4 about the axis 3 thereof by a half a revolution (180) in the arrow direction 5. Thereby, the first and second spindles 6, 11 change positions. The traversing means 10 are not carried along with the rotation of the turret base plate 2. Through the rotation of the turret base plate 2, the empty bobbin tube 9, which is placed on the second spindle 11, is rotated into the winding position and therefore into the path of the roving 1. Thereby the roving 1 is taken over by the empty bobbin tube and detached from the full bobbin tube. For transferring the roving 1 to the empty bobbin tube, the bobbin tube is provided at a certain place with a catch device. The roving 1 is guided by the traversing means 10 to the place of this catch device. As soon as the roving 1 has been taken over by the empty bobbin tube, the traversing means 10 begin to uniformly wind to roving 1 onto the empty bobbin tube by means of a controlled up and down movement.

(7) Modifications and variations can be made to the embodiments illustrated or described herein without departing from the scope and spirit of the invention as set forth in the appended claims.

REFERENCE LIST

(8) 1 Roving 2 Turret base plate 3 Rotational axis of the turret 4 Drive of the turret 5 Direction of rotation of the turret 6 First spindle 7 Rotational axis of the first spindle 8 Drive of the first spindle 9 Bobbin tube 10 Traversing means 11 Second spindle 12 Rotational axis of the second spindle 13 Drive of the second spindle 14 Fastening element 20 Machine frame