BRPI0904256A2 - operating unit for feeding workplaces of an open-ended spinning machine - Google Patents

Abstract

OPERATING AGGREGATE FOR FEEDING THE WORKPLACES OF AN OPEN END FIAR MACHINE. The present invention relates to an operation apparatus for feeding workstations of an open-ended spinning machine, with auxiliary wire supplying equipment for preparing an auxiliary wire, and with a wire placement device. , for attaching a new spinning wire to an empty capsule held in a bobbin frame of the winder as well as for preparing a spare winding of the yarn, the yarn laying device having a locking lever. yarn guide and bypass which, by means of a first drive, can be optionally positioned in a threading position or in a winding position. According to the invention it is provided that the yarn laying device (23) has a separate second drive (19) for the yarn guide and shifting lever (34) through which the yarn guide lever and (34) can be temporarily positioned in an inclined traction position (II).

Description

Patent Descriptive Report for "AGGREGATION OF OPERATION FOR FEEDING WORKPLACES OF AN OPEN END FIAR".

Description of the Invention

The present invention relates to an operating aggregate according to the preamble of claim 1.

Open-ended spinning machines feature, as you know, a multitude of identical workplaces arranged next to each other, which have respectively a spinning device for producing a yarn as well as a winding device for the manufacture of a cross spool.

Workplaces of such open-ended spinning machines are usually powered by automatically working operating aggregates that come into play when an operating case occurs at one of the working locations.

Such a case of operation exists, for example, in the case of a wire break, or when in one of the workplaces the coil has reached its predetermined diameter and needs to be replaced with a new empty capsule.

That is, operating aggregates of this type described, for example, in DE 44 43 818 A1 can not only eliminate "normal" defective ruptures, but also automatically exchange crossed coils / empty capsules.

In the case of an exchange of empty spool / caps, the full spool is taken from the spool frame of said work location and is transferred to a spinning machine carrier.

Then a new empty capsule is introduced into the framed workplace coil by means of a so-called open-ended spinning auxiliary wire and is re-fitted with a wire, and the new wire is fixed to the previously replaced empty capsule in the frame. of the coil.

For the accomplishment of these works, the operating aggregates have several equipments. They are equipped, for example, with auxiliary yarn supply equipment for the preparation of the auxiliary yarn required after a cross-bobbin / capsule replacement for re-equipping with a yarn as well as with a yarn laying device, for attaching the new wire to the empty capsule held within the spool frame of the reel between the capsule discs, and for preparing a so-called wire reserve winding.

The operating aggregates feature, for example, a yarn laying device with a rotating, supported yarn guide plate which moves the new yarn to the area of one of the disc caps of the bobbin frame such that a circumferential harnessing device disposed on the capsule disc can pick up the spinning wire, pull it into a trailing groove and in this case can secure it more or less securely.

Then, by means of the wire guide plate, in the base area of the empty capsule capsule a reserved wire winding is prepared.

Certainly it has been shown to be disadvantageous in such operating aggregates that the type of delivery of the new yarn by the yarn laying device to the supported empty capsule may turn in the molded spool.

That is, the placement of the new spinning wire in the surrounding capping device disposed in the capsule disc area often proves to be somewhat problematic.

It has therefore been suggested from this point on to modify the operating aggregates such that during delivery of the wire the new spinning wire is not transferred to a surrounding wire harness, but during delivery the new wire is tightened. between one of the disc caps of the coil frame and the front side of a new empty capsule.

Operating aggregates, which are equipped with devices which make it possible to tighten a new spinning wire between a capsule disc and an empty capsule front side are described, for example, in DE101 39 072 Α1. These known operating aggregates feature a displaceable wire placement device for the area of the rewinding device, which is equipped with a capsule disc adjuster, whereby one of the capsule discs is slightly tipped and thereby -between the capsule disc and one of the front sides of the empty capsule can be created a slit into which the new wire is placed and can be fixed during tumbling behind the capsule disc.

Undoubtedly, it has been proven in practice that, in the case of operating clamps executed in this way, the new wire is usually safely tightened in the slit between the capsule disc and the front flange of the shell. such that there is a danger that even though a supported wire guide element may rotate in the direction of laying the wire, then the spinning wire is not immediately returned to the empty capsule with the consequence that the winding spare dofio is wrapped next to the empty capsule and as a result is unusable.

Starting from the state of the art, it is the task of the invention to create an operating assembly whose yarn placement device is modified such that not only is a regular fixation of the new wiring wire in the empty capsule maintained in the frame of the housing. The coil of the coil device, but also during preparation following a wire back-up winding, is ensured that the wire-preserving winding is always deposited regularly at the base of the empty capsule shell.

According to the invention, this task is solved by an operation controller which has the characteristics described in claim 1.

Advantageous embodiments of the invention are the subject of the subordinate claims.

An operating unit, whose yarn positioning device has a second drive that can be separately controlled for the yarn guide and offset lever, has the advantage that the yarn guide and offset lever, which can pivot, can rotate. be temporarily positioned in a so-called inclined traction position.

In this inclined pulling position of the yarn guide and deflection lever, the tight wiring gap between the empty capsule capsule disc and the empty capsule front flap is admitted with a force component that is inclined toward the regular direction. movement of the wire, which ensures that the spinning wire is immediately returned to the empty capsule.

That is, by means of the yarn guide lever and the offset lever positioned in the inclined traction position, it is reliably prevented that the deformation yarn will take too long in the area of the empty capsule / capsule disc, and thus the wire reserve is mistakenly wrapped around the empty capsule.

According to claim 2, in advantageous embodiment, it is provided that the second drive is performed as a pneumatic cylinder, whose piston rod during expansion corresponds to a connecting plate disposed on the wire guide lever and the Detour.

Such a construction is reliable and insensitive, and can be carried out at favorable costs.

Pneumatic cylinders of this type, for example, have the advantage that the end points of a simple, in particular displacement without additional or similar sensor equipment can be run and can be reproduced at any time. In addition, pneumatic oscillators represent proven, cost-effective, large-scale components that are characterized by long life as well as high reliability.

As described in claim 3, furthermore, the wire guide and diverter lever is supported by a spring element which provides that when the pneumatic cylinder is connected without pressure, the wire guide and diverter cable is automatically retracted from position. inclined to the winding position, which predetermines the position of the wire winding reserve in the empty capsule. The recovered empty capsule yarn is then guided through the yarn guide and deflection lever positioned in the winding position such that the empty capsule base held by rotating in the bobbin frame is prepared. a regular reserve winding of the wire.

That is, a spare winding of the wire which, on the one hand, remains secure in its predetermined position during the co-bending process as well as during the next transport processes which, on the other hand, however, may need to be be easily accessible and easily loose.

Further features of the invention will be explained below with the aid of an exemplary embodiment shown in the drawings.

It is shown:

Fig. 1 schematically, in side view, a working location of an open-ended spinning machine as well as an operating assembly, which has a yarn placement device with a yarn guide and offset lever. which can be controlled according to the invention,

Fig. 2 shows a yarn placement device with a yarn guide and diverter lever according to the invention in a larger scale;

Figure 3 shows the wire placement device according to Figure 2 in rear view;

In figures 4A - 4C the wire guide and offset lever according to the invention in various operating positions.

Figure 1 shows a half of a well known open end splitting machine 1.

Such open-ended spinning machines 1 have a multitude of identical work places 2 arranged next to each other in series which are respectively equipped with a spinning device 3 as well as a winding device 4.

In the spinning devices 3 the fiber strip 6, previously placed on the spinning jars 5, is spun to form spinning yarns 7, which are wound on the winding devices 4 to form cross bobbins 8. As indicated, the devices 4 are respectively equipped with a bobbin frame 9 for the swivel brackets of a capsule 10 or a cross bobbin 8, and with a bobbin drum 11 for driving the cross bobbin.

In addition, the workplaces 2 have, respectively, a yarn exchange device 18, a working suction nozzle 14, as well as a yarn joining member 20 of the working location. That is, workplaces 2 are equipped such that they can automatically eliminate wire breakage in case of need.

In addition, the open end spinning machine 1 has a bobbin conveyor 12 for removing the finished cross bobbins 8 in the winding devices 4.

In or about the open-ended spinning machine 1 there is an operating unit 16 supported, which can be rotated on a guide rail 13, as well as a support rail 15. Such operating aggregates 16 patrol along the open-end spinning machine 1 workplaces 2, and automatically take action when one of the workplaces 2 has a need for action. Such a need for action exists, for example, when at one of the work places 2 a full cross spool 8 is replaced with a new empty capsule 10, and the work place 2 then needs to be rewired.

For this purpose, the operating unit 16 has, as is known, a number of devices, which enable a timely exchange of empty coils / capsules.

Of these numerous devices in Figure 1, only one auxiliary wire supply device 21 with the corresponding supply tube as well as the wire placement device 23 is shown. Auxiliary wire supply devices 21 and wire placement devices 23 are well known and are described in relatively detail, for example, in DE 101 39072 Α1.

The wire placing device 23, which is shown in figure 2 on a larger scale, is supported and can be rotated in a limited manner, and for the transfer of a wire it can be rotated out of the operation assembly 16 to the area of a empty capsule 10 supported by rotating the spool frame 9 of a workplace 2. The wire laying device 23 is essentially a support arm 39 which is supported on an intermediate wall of the operating unit 16 so that it can rotate. limited in reference to its pivot axis 42, as well as being axially displaceable.

The rotation of the support arm 39 between the rest position shown in FIG. 1 and the working position shown in FIG. 2 occurs through a pneumatic cylinder 41.

On the support arm 39 is attached to the end side a top element 40, which as is evident in figures 2 and 3, is connected to the support arm 39 through a pivoting axis 44, and can be turned a little laterally through a pneumatic cylinder 45.

In turn, in the top element 40 is hinged a yarn applicator head 47, which supports various operating elements such as a yarn brake 35, a yarn guide lever 34, a yoke device, 31, as well as a yarn deflection pulley 33. In this case, with reference to the top member 40, the yarn applicator head 47 may be limited to a limited rotation by means of a pneumatic cylinder 48 about the turning axis 46.

For actuating the wire cutting device 31 as well as the wire brake 35 there is provided a pneumatic cylinder 49 which controls the aforementioned operating elements via a lever system 54. In addition, the top element 40 has a stop pin 25, for the wire guide and shift lever 34, as well as a capsule disc adjuster 32 which can be placed on one of the capsule 30 caps of the bobbin bezel 9, such that between the capsule disc 30 and the front side 27 of the empty capsule 10 appears a slot, in which the new wire 7 can be inserted and fixed.

As is apparent, in particular, from Figure 3, in the lever system 54, in the wire brake area 35, the guide wire guide lever 34, which is fixed by a spring member 24, is supported on a position of threading wire I (figure 4A).

The wire guide and deflection lever 34 has a locking element 26 which during rotation of the wire applicator head 47 provided by the pneumatic cylinder 48 corresponds with a stop pin 25 disposed on the top element 40.

In addition, the yarn applicator head 47 is provided with a separate operation 19, preferably a pneumatic cylinder whose piston rod during expansion presses a clutch plate 29 disposed on the yarn guide lever 34 and, in this case, presses the yarn guide and yaw 34 for an inclined pulling position Il (figure 4B).

The operation of the yarn placement device 23 in particular of the yarn guide and deflection lever 34 which can be controlled according to the invention:

when in one of the work places 2 a cross spool 8 has reached its predetermined diameter, the operating unit 16 is ordered to go to said work place 2, and there automatically exchanges the filled cross spool 8 for a new empty capsule 10.

That is, after expulsion of the full cross spool 8 from the spool mold 9 through corresponding (not shown) handling devices of the operating unit 16, firstly an empty new capsule 10 is placed between the capsule disks 30 of the spool. frame 9 unwinds from said work place 2 and then an auxiliary wire is pre-stopped for retrofitting with a wire in the working spinning device 3 through the auxiliary wire supplying device 21 of the operating unit 16

That is, for retrofitting with a wire at work site 2, as described, for example, in DE 101 39 072 A1, firstly, the suction nozzle 14 proper to the workplace is turned to a wire receiving position and at the same time the supply tube of the auxiliary wire supply device 21 of the operating unit 16 is rotated such that the outlet of the supply tube is positioned in front of the opening suction nozzle suction nozzle 14.

The auxiliary wire supplied through the supply tube is drawn through the suction nozzle 14 which is vacuum-insulated at work location 2 and in this case is secured.

The threading device 23 at that moment is positioned in the resting position indicated in figure 1.

Then the supply tube of the auxiliary wire supply device 21 is rotated to the upper operating position, whereby the corresponding auxiliary wire is subsequently supplied via the auxiliary wire supply device. While rotating the supply tube to the upper operating position, the auxiliary wire is pulled through the deflection pulley 33 of the wire placing device 23, which is still positioned in the rest position therein.

In the next step the thrust plunger mechanism 41 is controlled such that the wire placing device 23 rotates forward to its working position shown in figure 2. In this case, the auxiliary wire is threaded into the wire cutting device 31 disposed in the yarn laying device 23 as well as for the yarn brake 35. At the same time also the suction nozzle 14, which secures the beginning of the yarn of the auxiliary yarn pneumatically, is turned downwards and transfers the auxiliary wire to the body joining wires 20 from the workplace 2.

In a corresponding yarn preparation device of the yarn joining member 20, preferably in a fairly well-known pneumatically admitted preparation tube, the auxiliary yarn end is prepared for the following yarn joining process, and the auxiliary wire is kept ready for the process of joining the wires.

Thereafter, the now free suction nozzle 14 is again rotated to the wire receiving position described above so that the supply tube also continues to rotate.

Due to the rotating motion of the supply tube, the auxiliary wire is placed in a wire aggregate extraction device 16, which is performed, for example, as a mechanically working cylinder delivery facility.

During the individual turning movements of the supply tube to its various operating positions, furthermore, by means of a wire supply installation arranged, for example, on the inlet side of the auxiliary wire supply device 21, a length is always provided thereafter. corresponding mode setting.

Now the auxiliary wire is separated by a wire cutting device disposed within the auxiliary wire supply device 21, because of the dominant blowing current within the auxiliary wire supply device 21, it exits the mouth of the auxiliary wire. supply tube, and through the vacuum that arises in the area of the suction opening of the suction nozzle 14 is immediately sucked into the suction nozzle 14.

That is, the auxiliary wire is now held between the joining members 20 of the working location 2, as well as the suction nozzle 14 proper to the working place, in which case it passes through the yarn laying device 23 of the device. wire extraction 56 from the workplace 2, and an operating aggregate wire extraction device 16.

The yarn laying device 23 is then admitted through the thrust piston mechanism axially with respect to the pivoting axis42 and is positioned with a thrust element (not shown) in the casing of the winding device 4. Next, through a pneumatic cylinder 45, the top member 40 is rotated about the pivot axis 44 and, in this case, with a capsule disc adjuster 32 attached to the scope element 40, presses one of the capsule discs 30 of the 9 reel frame slightly out.

In this case, between the capsule disc 30 and the front side 27 of the empty capsule capsule base 10 fixed to the coil frame 9, a wedge-shaped slot appears, in which a yarn string of the auxiliary yarn is then inserted through it. of a downward turning motion of the yarn applicator head 47.

That is, by means of the push plunger mechanism 48, the wire applicator head 47 is rotated forward about the pivot axis 46 such that the auxiliary wire in front of the front side 27 of the capsule base. 1 of the empty capsule 10 forms a cord of thread. In this case, the lanyard passes through the wire cutter 31, as well as through the wire frequency 35.

In addition, during rotation of the wire applicator head 47, the wire guide and deflection lever 34 admitted by a spring member 24 is positioned in a position of threading the wire I.

For re-equipping with a spinning wire 3, the end of the prepared wire, kept ready by the assembling wires 20 of the workplace 2, as is known, is first briefly fed back into the spinning device 3. Next , the auxiliary yarn, which is then connected with the new spinning yarn 7 through a so-called yarn-joining device, is pulled from the workplace 2 via the yarn extractor 56 shown in Figure 1, as well as through the operating aggregate wire extractor 16 which passes synchronously out of the spinning device and is removed through the working suction nozzle 14.

This removal takes time for the harness to pass through a sensing device (not shown). If the wire harness is detected, proper placement of the spinning wire 7 in the empty capsule 10, as well as winding of the empty wire reserve 28 in the empty capsule 10 occurs.

In detail, for tightening the new spinning wire 7 between the front side 27 of the empty capsule 20 and the capsule disc 30, as well as for preparing the wire reserve 28 at the base of the empty capsule 10, the result is the following. following process development:

the new spinning wire 7 is cut through the wire cutter device 31 just above the empty capsule 10, and the cut piece of wire is immediately moved through the suction nozzle 14. At the same time, the new spinning wire 7 It is fixed by the wire brake 35, which is positioned at the wire passage direction just before the empty capsule 10. Immediately after or at the same time, with the wire separation, by rotating the top element 40 around the rotating shaft 44, the capsule disc 30 is closed and the spinning wire 7 is securely clamped between the empty capsule 10 and the front surface 27 of the empty capsule 10.

Then the reel drum 11 is started and accelerates the empty capsule 10 which is on the lock due to friction to the winding speed.

Since the starter spinning device 3 continuously produces spinning wire 7, it can reach an excess of wires, either by securing spinning wire 7 in the slot in which spinning wire 7 This may lead to a brief pause, but also during the sudden increase in winding speed 11 to the winding speed may lead to an excess of yarn, which may be temporarily stored for a short period in an accumulator nozzle (not shown) at the workplace 2.

In particular, in the case of bemalt yarn extraction speeds, in an alternative embodiment, it may of course also be provided that the winding drum 11 is already accelerated to a predetermined winding speed before the empty capsule 10 will be placed with the spinning wire 7 tightened between the empty capsule 10 and the capsule disc 30 in the winding drum. In this way, the volume of the spinning wire7 to be temporarily stored can be markedly reduced as a result of re-equipping with a wire.

At the same time, with the rotation of the empty capsule rotation10, by corresponding control of the push-in plunger mechanism 49, the wire cutter 31 and the wire brake 35 are opened, and the pneumatic cylinder 19 is controlled. in the sense "expansion of the piston rod".

The wire guide and deflection lever 34, in this case, is first turned spring-loaded to the winding position III and then through the expanded piston rod of the pneumatic cylinder 19, which corresponds to a connecting plate 29 on the yarn guide lever 34 which is temporarily shifted from the winding position III shown in figure 4C to the inclined pulling position II as shown in figure 4B.

In this inclined traction position II, the spinning wire 7 is admitted as a force component, which is acting at an angle to the "regular" threading, and which ensures that the spinning wire 7 is immediately led to the empty capsule base. 10

Thereafter, the piston rod of the pneumatic cylinder 19 is entangled, which causes the wire guide and deflection lever34, admitted by the spring element 24, to be turned back to the winding position III, in which the spinning wire 7 unwinds in the area of the empty capsule base 10 and, in this case, forms a unreserved winding of the wire 28.

After termination of the reserve winding of the wire 28 by turning back the wire placement device 23, the spinning wire 7 is released and can be taken over by the wire exchange equipment 18 of the working location 2.

Claims (3)

1. Operating unit for feeding workstations of an open-ended spinning machine, with auxiliary wire supplying equipment for preparing an auxiliary wire and with a wire laying device, for fixing a new spinning yarn in an empty capsule held in a rewinding device spool frame as well as for preparing a yarn back-up winding, with the yarn laying device having a yarn and shifter lever which A first drive can be optionally positioned in a threading position or in a winding position, characterized in that the threading device (23) has a second drive (19) which can be be separately controlled to the yarn guide and bypass lever (34), whereby the yarn guide and bypass lever (34) can be temporarily positioned in a lock position. inclined position (II). Operating unit according to Claim 1, characterized in that the second drive (19) is made of a pneumatic cylinder whose extendable piston rod corresponds to a connecting plate (29) on the wire guide lever and of deviation (34). Operating unit according to Claim 1, characterized in that, in the case of pressure-free connection of the pneumatic cylinder (19), the wire guide and deflection lever (34) can be retracted through from a spring element (24) from the inclined traction position (II) to a defined winding position (III), which predetermines the position of the wire reserve winding (28) in the empty capsule.