EP0478935A1 - Procedure for supplying taking up means at the spinning station of a spinning machine with full roving bobbins and for removing the finished roving bobbins and device - Google Patents

Abstract

Process for supplying full roving bobbins to means for receiving these roving bobbins, which are assigned to a respective spinning station of a spinning machine having a plurality of spinning stations, and for removing the roving bobbins finished at the spinning stations, and a device for carrying it out. In known roving-bobbin creels of ring spinning machines, the handling of the roving bobbins during the supply, finishing and removal involves a relatively high outlay. Each roving bobbin is arranged on its own carrier element, by means of which it is transferred to the receiving means, during finishing it remains on the carrier element, and after finishing it is removed on the carrier element. The invention is used in ring spinning machines. <IMAGE>

Description

The invention relates to a method for feeding full roving bobbins to means for receiving these roving bobbins, each of which is assigned to a spinning station of a spinning machine having a plurality of spinning positions, and for transporting away the roving bobbins processed at the spinning positions, and a device for carrying out the method.

It is known to feed full roving bobbins in hanging brackets of a transport path to a roving bobbin creel of a ring spinning machine. In this roving bobbin creel is provided for each spinning position of the ring spinning machine, in which a roving bobbin to be processed at the spinning position is held. Processed roving bobbins at the spinning stations are exchanged for full roving bobbins of the transport path either manually by an operator or automatically by a roving bobbin changing carriage (DE 37 34 275 A1). The finished roving bobbins are also removed by means of the transport path that feeds the full roving bobbins.

The object of the invention is to provide a method and a device of the type mentioned, which simplify the handling of roving bobbins when feeding to the spinning stations, when processing at the spinning stations and when removing them from the spinning stations.

This object is achieved in that each roving bobbin is arranged on its own carrier element, with which it is transferred to the means for receiving, remains on the carrier element during processing and is transported away on the carrier element after processing.

This simplifies the handling of the roving bobbins both when feeding them to the spinning positions of the spinning machine and when processing them on the spinning machine and when removing them from the spinning machine.

To carry out the method, a device is provided in which a first transport device is provided for feeding support elements each carrying a full roving bobbin to the spinning positions of the spinning machine, in which each spinning position has means for receiving at least one support element and in which a second transport device for Removal of the processed roving bobbin carrying support elements is provided.

Since a separate transport device is provided for both the feeding of the roving bobbins and for the removal of the processed roving bobbins, full roving bobbins can be supplied, for example, at the different spinning stations, while processed roving bobbins are removed at the same time. The time for changing the roving bobbins is therefore reduced.

It is also known (DE 15 10 960 A) to arrange roving bobbins in a roving bobbin creel of a ring spinning machine with a horizontal bobbin axis. The roving bobbins are held on shafts, which in turn are held in V-shaped prisms by bearing blocks attached to the roving bobbin creel. Due to the horizontal storage of the roving bobbins, the roving can be drawn off under low and even tensile stress.

In an embodiment of the invention, the roving bobbins are held in the means for receiving with a horizontally aligned axis. In a further embodiment, the roving bobbins are freely rotatable about the axis. This makes it possible to pull the roving off the roving bobbins with little effort and even tensile stress. This measure creates a uniform yarn during the spinning process.

In a further embodiment of the invention, a magazine for several carrier elements is provided as the means for receiving. With the help of this space-saving arrangement, it is possible to supply several spinning positions of the spinning machine with roving from one magazine.

In a further embodiment of the invention, the magazine has a feed opening assigned to the first transport device and a removal opening assigned to the second transport device. This makes it possible to feed the full roving bobbin carrier elements directly to the magazine and to remove the carrier elements already present in the magazine and provided with roving bobbin bobbins from the magazine and to remove them by means of the second transport device. In this way, for example, full roving bobbins can be fed to the magazine and finished roving bobbins can be removed.

In a further embodiment of the invention, a common magazine is provided for at least two spinning stations, in which at least one carrier element carrying a roving bobbin can be accommodated for each spinning station. With this configuration, in addition to the roving bobbins being processed at the spinning stations, the magazine can be assigned at least one full roving bobbin serving as a supply, so that after the processing of a roving bobbin, a further full roving bobbin is already available for the spinning station. The time required to change a finished roving bobbin to a full roving bobbin at the spinning station is therefore relatively short.

In a further embodiment of the invention, the carrier elements have parts which project beyond the circumference of the roving bobbins and with which the Support the support elements in the magazine against each other. As a result, although the carrier elements lie against one another in the magazine, the roving bobbins are at a distance from one another and can therefore be pulled off unhindered. Since the parts extend beyond the roving bobbin, they offer protection against damage to the roving bobbins.

• Fig. 1 zeigt in einer Frontansicht eine erfindungsgemäße Ausführungsform eines an einer Spinnmaschine vorgesehenen Vorgarnspulengatters mit einem Magazin zum Aufnehmen von Vorgarnspulen tragenden Trägerelementen, das vier Trägerelemente übereinanderliegend aufnimmt und dem zwei Transporteinrichtungen zugeordnet sind, von denen die erste zum Zuführen von vollen Vorgarnspulen und die zweite zum Abtransportieren abgearbeiteter Vorgarnspulen dient,
• Fig. 2 eine teilweise geschnittene Seitenansicht entlang der Linie 11-11 in Fig. 1 des die Magazine enthaltenden Vorgarnspulengatters der doppelseitigen Spinnmaschine nach Fig. 1, bei der jeweils eine erste und eine zweite Transporteinrichtung den Magazinen auf beiden Seiten der Spinnmaschine zugeordnet ist,
• Fig. 3 in einer Schnittansicht entlang der Linie 111-111 der Fig. 2 einen Ausschnitt eines Magazins nach Fig. 2, bei dem eine Vorgarnspule auf einer horizontalen Achse eines Trägerelementes drehbar gelagert ist, an dessen beiden Stirnenden zwei die Vorgarnspule im Umfang überragende Platten vorgesehen sind, die in dem Magazin geführt sind und
• Fig. 4 in vergrößerter Ansicht einen Ausschnitt IV-IV der Fig. 3, bei dem die Spulenhülse der Vorgarnspule auf lediglich schematisch dargestellten Wälzlagern frei drehbar ist.

Further advantages and features of the invention emerge from the subclaims. Exemplary embodiments of the invention are described below with reference to the drawing.

• Fig. 1 shows a front view of an embodiment of a roving bobbin provided on a spinning machine with a magazine for receiving roving bobbin supporting elements, which receives four carrier elements one above the other and to which two transport devices are assigned, the first of which for feeding full roving bobbins and the second serves to remove processed roving bobbins,
• 2 shows a partially sectioned side view along line 11-11 in FIG. 1 of the roving bobbin creel containing the magazines of the double-sided spinning machine according to FIG. 1, in which a first and a second transport device are assigned to the magazines on both sides of the spinning machine,
• Fig. 3 in a sectional view along the line 111-111 of Fig. 2 shows a section of a magazine according to Fig. 2, in which a roving spool is rotatably mounted on a horizontal axis of a carrier element, on the two ends of which two roving bobbins over the roving bobbin are provided, which are guided in the magazine and
• Fig. 4 in an enlarged view a section IV-IV of FIG. 3, in which the bobbin tube of the roving bobbin is freely rotatable on only schematically illustrated roller bearings.

1 and 2, an embodiment of a roving bobbin creel for a double-sided ring spinning machine is shown, which has a plurality of spinning stations on each machine side. In a known manner, in such a ring spinning machine, each spinning station is provided with a drafting device (10) which is arranged essentially below the roving bobbin frame. Roving bobbins (7, 7 ') are arranged in the roving bobbin creel, each supplying the drafting system (10) of a spinning station with a roving (6) which is warped in the drafting system (10) and via a rotor rotating on a ring to one on one Driven spindle arranged coil sleeve is wound into a cop. The structure and function of such a ring spinning machine is not discussed in more detail below, since these are generally known. In Fig. 2, the drafting systems (10) of the two machine sides are therefore only shown schematically. The remaining elements of the ring spinning machine have not been shown.

The roving creel is designed symmetrically to a central longitudinal plane of the ring spinning machine. A large number of adjoining magazines (1) for accommodating roving bobbins (7, 7 ') are provided on each machine side in alignment in the longitudinal direction of the machine. The magazines (1) of the two machine sides are, as can be seen from FIG. 2, arranged at an acute angle to the central longitudinal plane (26) of the ring spinning machine and are therefore inclined forward towards the operating sides of the machine. Each magazine (1) consists of two mutually parallel, mutually opposite, substantially U-shaped profiles, which form a shaft for several roving bobbins (7, 7 ') arranged one above the other and are attached to the frame of the ring spinning machine. The roving bobbins (7, 7 ') are held in the magazines (1) with the aid of carrier elements (5), which will be explained in more detail below. Each magazine (1) can accommodate four carrier elements (5) one above the other in a row. A feed opening (15) is provided at its upper end facing away from the drafting device (10) for feeding a carrier element (5) into the magazine (1). This feed opening (15) is located on the inside of the magazine (1) facing the central longitudinal plane (26). At the bottom of the magazine (1) there is also a removal opening (16) on the inside from which a carrier element (5) with a finished roving bobbin (7 ') can be removed.

Each magazine (1) is intended for only two spinning stations, so that in each magazine (1) two roving bobbins (7, 7 ') are provided for each spinning station, one of which serves as a supply spool and only after one of the roving bobbins has been processed ( 7 ') is used in the magazine (1). The four roving bobbins (7, 7 ') are expediently processed in sequence from below in order to be able to remove a finished roving bobbin (7') immediately from the removal opening (16) and thereby provide space for a full roving bobbin (7) to be fed create. So as soon as the carrier element (5) with the lowest roving spool (7 ') has been removed, the carrier elements (5) with the roving spools (7) still in the magazine (1) slide down.

Another embodiment provides that only one supply spool for the two spinning positions is held in the magazine (1), so that there are a maximum of three roving bobbins (7, 7 ') held on carrier elements (5) in the magazine (1). As soon as the first roving spool (7 ') has been processed at a spinning station, the supply spool is therefore used at this spinning station. Since there are only three carrier elements (5) in the magazine (1), the overall height of the magazine (1) can be reduced compared to the version with four carrier elements (5).

For the magazines (1) on both sides of the machine, a common first transport device (2) is provided at the level of their feed openings (15) in the region of the central longitudinal plane (26), which supports elements (5) carrying full roving bobbins (7) to the magazines ( 1) serves. At the level of the removal openings (16) of the magazines (1), a second transport device (3), which is likewise assigned to the magazines (1) on both machine sides, is also arranged below the transport device (2) in the region of the central longitudinal plane (26). Both transport devices (2 and 3) consist of conveyor belts running in the longitudinal direction of the machine, which are guided on pairs of rollers (13 and 14). The two rollers of a pair of rollers (13 or 14) are arranged symmetrically to the central longitudinal plane (26) at an obtuse angle to one another, so that the conveyor belt running on them is given a slight channel shape. As a result, the carrier elements (5) lying on them can be transported without the risk of lateral breaking out. Each feed opening (15) has web-like guide elements (17) on its underside, which extends to the top of the rotating conveyor belt of the transport device (2). These guide elements (17) serve to guide the carrier elements (5) from the transport device (2) into the magazines (1). In the exemplary embodiment, the roving bobbins (7 and 7 ') are transported in the carrier elements (5) with the bobbin axis (4) aligned horizontally on the transport devices (2 and 3). They are also kept in this position in the magazines (1).

In another embodiment, it is provided that the full roving bobbins (7) on carrier elements with a vertically aligned bobbin axis (4) are transported to the magazines (1) and, after processing, the roving bobbins (7 ') that have been worked off are also removed again on the carrier elements in this position. The roving bobbins (7, 7 ') are thus only held in the carrier elements during their stay in the magazines (1) with a horizontal bobbin axis.

Each carrier element (5) consists of an essentially hollow axis (20), as can be seen from FIGS. 3 and 4, which projects concentrically to the bobbin axis (4) through a bobbin tube (19) of the roving bobbin (7, 7 ') . At both ends of the coil sleeve (19) two circular disk-shaped plates (25) are connected to the axis (20) concentrically to the coil axis (4). The diameter of the plates (25) is larger than the bobbin diameter of a full roving bobbin (7). As a result, the carrier elements (5) project beyond the roving bobbins (7, 7 ') in the circumferential direction and therefore keep them at a distance from one another in the magazine (1), even though the plates (25) of the carrier elements (5) lie one on top of the other. At least one of the two plates (25) (the left one in FIG. 3) is detachably connected to the axis (20) in order to allow the roving bobbins (7, 7 ') to be removed and attached. For this purpose, it has a sleeve which is concentric with the coil axis (4) and has an internal thread and which is screwed onto a threaded bolt (21) provided at the free end of the axis (20). The bobbin tube (19) of the roving bobbin (7, 7 ') is freely rotatably mounted on the axis (20) in order to ensure that the roving (6) is pulled off evenly during processing of the roving bobbin (7) in the magazine (1). For this purpose, for example, two positions of the axis (20) of roller bearings (23, 24), which are provided at a distance from one another, are shown, for example, in the detail of FIG. The rollers (23) of the roller bearing are arranged in a cage provided with spring elements (24) in such a way that they protrude beyond the circumference of the axis (20) in the unloaded state. As soon as a coil sleeve (19) is pushed over the roller bearing, the cage is compressed and thereby forms a securing for the coil sleeve (19) against lateral displacement. In addition, the coil sleeve (19) has no direct contact with the circumference of the axis (20) due to this configuration, so that no sliding friction can occur.

In the state shown in FIGS. 1 and 2, the lowest of the four roving bobbins (7, 7 ') held in the magazine (1) on a respective carrier element (5) has already been processed. At the spinning position of this roving spool (7 '), a roving change to a roving (6) of a roving spool (7) arranged further up has already been carried out. The roving bobbin (7 ') is therefore prepared for removal. The carrier element (5) with this roving bobbin (7 ') can therefore be guided out of the removal opening (16) of the magazine (1) in the direction of the arrow (26) and placed on the transport device (3). At the same time, the three support elements (5) lying on this support element (5) slide in dimension magazine (1) downwards, so that the second lowest support element (5) is in the lowest position and rests on the bottom of the magazine (1). As soon as the roving (6) from this roving spool (7) has run into the drafting system (10) of the spinning station, the roving of the top roving spool (7) that has not yet been used is threaded into the drafting system (10). After removing the finished roving spool (7 '), a carrier element (5) provided with a full roving spool (7) is rolled over the guide elements (17) into the feed opening (15) of the magazine (1).

Two sensors (11 and 12) are provided as means for detecting the filling status of the magazine (1), which are connected to a control system which controls the supply and removal of carrier elements (5). The sensor (11) detects the impending runout of the roving (6) of the lowermost roving bobbin (7 '), while the sensor (12) arranged on the feed opening (15) detects the presence of an uppermost carrier element (5) in the region of the feed opening (15 ) notes.

Instead of circular disks (25), it is also possible to provide other geometrical shapes of plates that project beyond the roving bobbins (7). These carrier elements (5) are then not rolled, but pushed, for example, or the like.

The carrier elements (5) in the magazine (1) can be exchanged by an operator or automatically. In the case of automatic roving bobbin and carrier element change, the carrier elements (5) with full roving bobbins (7) are placed by the transport device (2) in front of the corresponding feed opening (15) of a magazine (1) in such a way that the carrier element is then directly fed into the feed opening by means of a feed device (15) can be rolled. A corresponding removal device is provided for removing a carrier element (5) with a finished roving bobbin (7 '). The sensors (11) and (12) serve as signal transmitters for the control of the change processes.

Claims (12)

1. A method for supplying full roving bobbins to means for receiving these roving bobbins, each of which is assigned to a spinning station of a spinning machine having a plurality of spinning stations, and for removing the roving bobbins processed at the spinning stations, characterized in that each roving bobbin (7, 7 ' ) is arranged on its own carrier element (5) with which it is transferred to the means (1) for receiving, remains on the carrier element (5) during processing and is transported away on the carrier element (5) after processing. 2. Device for carrying out the method according to claim 1, characterized in that a first transport device (2) for supplying a full roving bobbin (7) carrying carrier elements (5) to the spinning positions of the spinning machine is provided that each spinning station means (1 ) for receiving at least one carrier element (5), and that a second transport device (3) is provided for removing the carrier elements (5) carrying the finished roving bobbins (7 '). 3. Apparatus according to claim 2, characterized in that the roving bobbins (7, 7 ') in the means (1) for receiving with a horizontally aligned axis (4) are held. 4. The device according to claim 3, characterized in that the roving bobbins (7, 7 ') about their axis (4) are held freely rotatable. 5. The device according to one or more of claims 2 to 4, characterized in that a magazine (1) for a plurality of carrier elements (5) is provided as the means for receiving. 6. The device according to claim 5, characterized in that the magazine (1) has a feed opening (15) assigned to the first transport device (2) and a removal opening (16) assigned to the second transport device (3). 7. The device according to claim 5 or 6, characterized in that the carrier elements (5) in the magazine (1) are arranged in a row substantially vertically one above the other. 8. The device according to one or more of claims 5 to 7, characterized in that a common magazine (1) is provided for at least two spinning stations, in which for each spinning station at least one roving bobbin (7, 7 ') carrying carrier element (5) can be accommodated. 9. Device according to one of claims 5 to 8, characterized in that the magazine (1) is provided with means (11, 12) for detecting its filling state. 10. The device according to one or more of claims 2 to 9, characterized in that that the carrier elements (5) have parts (25) which project beyond the circumference of the roving bobbins (7) and with which the carrier elements (5) are supported against one another in the magazine (1). 11. The device according to claim 10, characterized in that a carrier element (5) has two plates (25) which are arranged on both sides in the extension of the bobbin tube (19) of the roving bobbin (7) and protrude beyond the coil circumference. 12. The apparatus according to claim 11, characterized in that the plates (25) are interconnected by means of an axis (20) which is designed as an axis of rotation for the roving bobbin (7, 7 ').

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