DE102010049515A1

DE102010049515A1 - Workplace of a cheese-producing textile machine

Info

Publication number: DE102010049515A1
Application number: DE102010049515A
Authority: DE
Inventors: Alexander Marx
Original assignee: Oerlikon Textile GmbH and Co KG
Current assignee: Saurer Spinning Solutions GmbH and Co KG
Priority date: 2010-10-25
Filing date: 2010-10-25
Publication date: 2012-04-26
Also published as: JP5787719B2; CN102530650B; EP2444347A2; EP2444347B1; JP2012091936A; CN102530650A; EP2444347A3

Abstract

The invention relates to a work station of a textile machine producing cross-wound bobbins, with a thread take-up device arranged in the region of the unwinding position of a supply bobbin, thread monitoring and treatment devices installed in the region of a thread travel path, and a winding device for producing a bobbin. According to the invention, the work station (1) has a multi-part thread guide channel (6) enclosing the thread travel path with receiving housings (18, 21) or receiving sections (31, 32, 33) for different thread monitoring and treatment devices, the thread guide channel ( 6) extends between the supply spool (2) positioned in the unwinding position (AS) and the winding device (4) and, if necessary, a partial vacuum can be applied in such a way that a negative pressure flow is present in the thread guide channel (6), the flow direction of which can be predetermined.

Description

The invention relates to a workstation of a cross-wound textile machine according to the preamble of claim 1.
At the workstations of cheesemaking textile machines producing bobbins, for example, spinning cops, which were manufactured on a ring spinning machine and have relatively little yarn material, wrapped into cheeses, which have a much larger yarn volume. The jobs of such textile machines have, inter alia, such as in the DE 10 2005 001 093 A1 described, in the field of yarn path various Fadenüberwachungs- and treatment facilities, with which the current thread during the rewinding, for example, on any thread error out, is monitored. If thread defects are discovered that exceed certain limits, they are cut out and replaced by almost yarn-like, usually pneumatically generated thread connections, so-called thread splices. The individual jobs also each have a winding device which has a creel for rotatably supporting a cross-wound bobbin and, for example, a yarn guide drum for frictionally rotating the cross-wound bobbin and for traversing the running thread. Such workstations are also usually each equipped with a lower thread sensor, a thread tensioner, a thread cleaner with thread trimming device, a yarn tension sensor, a thread catching nozzle and a paraffining device.
For reconnecting the thread ends after a thread break or after a controlled cleaner cut such jobs have a thread splicer and thread handling devices in the form of a pivotally mounted suction tube and a pivotally mounted gripper tube. The suction tube and the gripper tube are connected to a machine's own vacuum traverse and transfer in case of need the retrieved from the cheese or the feed bobbin thread ends for thread splicer.
By the DE 196 17 525 A1 are jobs of cheese-producing textile machines known, which are equipped in the Abspulstellung the supply bobbin with a so-called blowing bell, which dissolves the yarn end of the supply spool and transferred via a relatively short, tubular connection to a suction cup, where the yarn end by a vacuum-loaded gripper tube taken over and transferred to the thread splicer.
A device in which the yarn end of a supply spool is transferred via a short, tubular connection to the gripper tube, is also in the DE 10 2005 018 381 A1 described. The Abspulhilfsvorrichtung described in this patent application has a defined on the sleeve of the supply spool lowerable tubular element and a positioned above the sleeve, stationary, also tube-like thread guide device. In the thread running direction end to the thread guide means an adapter for docking a gripper tube is arranged, which is formed so that takes place during the takeover of the detached from the supply spool a largely leak-free connection of the vacuum-loaded gripper tube to the thread guide device.
The vertically displaceable Abspulhilfsvorrichtung is also surrounded by a dedusting vacuum unterdruckbeaufschlagbaren continuously sucking during the Umspulprozesses occurring during removal of the thread from the feed bobbin flight.
The above-described jobs of cross-wound textile machines have been proven in practice in principle, however, have the disadvantage that despite the use of tubular thread guide devices and positioned in the supply bobbin dedusting can not be sufficiently reliably avoided that the jobs in the course of Time will be contaminated by dust particles and fiber fly. Furthermore, these jobs are relatively wide in their structural design, especially since the drives for the yarn handling devices suction nozzle and gripper tube, which, as explained above, come after a Spulunterbrechung used to transport the yarn ends to Fadensleiißvorrichtung, built quite bulky, which As a result, the pitch of the juxtaposed jobs of these textile machines is relatively large.
Based on the aforementioned prior art, the present invention seeks to develop a job of a cheese-producing textile machine, which is designed so that a virtually dust-free rewinding feed bobbins is guaranteed to cheeses and also the pitch of the jobs is smaller than in the jobs currently in use.
This object is achieved by a job, which has the features described in claim 1.
Advantageous embodiments of the invention are the subject of the dependent claims.
The use of a thread running path enclosing, multi-part Fadenleitkanals having receiving housing or receiving sections for different Fadenüberwachungs- and treatment facilities, which extends between the positioned in Abspulstellung supply bobbin and the winder and, if necessary, in sections so acted upon by negative pressure that in Fadenleitkanal a Vacuum flow is pending, whose flow direction can be defined defined, has the advantage that after a winding interruption in a relatively simple and secure manner, the transfer of the thread ends resulting from the thread break can be secured to a Fadensleiißeinrichtung, both on the usual in the field of work, pivoting mounted suction nozzle, as well as can be dispensed with the pivotally mounted gripper tube.
The absence of a suction nozzle and a gripper tube, in particular the waiver of their bulky drive units, causes the jobs according to the invention have a significantly smaller width than the hitherto usual jobs.
By integrating the Fadenüberwachungs- and treatment facilities in the thread running path enclosing Fadenleitkanal is also achieved that the umzuspulende thread is encapsulated during the winding process by far the largest part of its thread travel from the environment, which has a very positive effect especially with respect to the development of dirt at the workplace ,
During Umspulvorganges is prevented by the imminent in Fadenleitkanal negative pressure, for example, that arising during removal of the thread from the supply bobbin fiber fly and / or resulting from passing through the various Fadenüberwachungs- and treatment facilities and / or during winding of the thread on the cheese Dust can spread to the environment, with the result that there is a drastic reduction in dust exposure. This means that the time span between the cleaning intervals so far relatively common in textile machines can be significantly extended. If material conditions are particularly good, it may even be possible to dispense with the use of a hitherto customary traveling cleaner.
As described in claims 2 and 3, it is provided in an advantageous embodiment that several Saugluftstutzen are connected to the Fadenleitkanal, which are connected via a diaphragm disc, the positionable suction openings defined, pneumatically continuously connected to a machine-long suction air duct. That is, by appropriate adjustments of the aperture disc, the Saugluftstutzen and thus the Fadenleitkanal each defined be subjected to negative pressure. The diaphragm disc can be driven by a drive so that in connection with the shutter described in claim 9 at the suction or in connection with the described in claim 11, arranged in the suction head housing control flap within the Fadenleitkanals a suction air flow can be realized with respect to Its flow direction is defined adjustable.
In order to simplify the production of Fadenleitkanals and to keep the production costs as low as possible, the thread guide channel, as described in claim 4, preferably formed in several parts. The thread-guiding regions of the yarn guide channel which are thread-guiding during the winding process are preferably designed as metallic die-cast parts, while, for example, the suction air nozzles are produced as plastic parts. The formation of the thread-guiding regions during the winding process as metallic die-cast parts has the particular advantage that even complex geometries can be realized very well with such castings, whereby the occurring tolerances can be reduced to a minimum. As can be in such castings and components that are applied during the winding process directly through the current thread and therefore should be resistant to wear, for example, ceramic yarn guide eyelets or the like., Integrate relatively easily, can also on the use of hitherto in the field of jobs usual, relatively expensive Fadenleitbleche be waived.
According to claims 5 and 6 is provided in an advantageous embodiment that the Fadenleitkanal least in a partial area is equipped with a lid member which is made of transparent plastic. Such a design has the advantage that it is not only easy to localize faults during the winding process, but that such faults are also freely accessible immediately after the removal of the easy-to-open cover element. Since the lid member is easily removable, for example, cleaning work can be performed in a simple manner without much time.
As described in claim 7, it is further provided that in the Fadenleitkanal a receiving housing for a Fadensleiißeinrichtung is integrated, to which a first Saugluftstutzen for sucking a bobbin connected to the supply bobbin and a second Saugluftstutzen for Suction of an originating from the cheese upper thread are connected. That is, by appropriate pneumatic loading of the first and second Saugluftstutzens successively both the upper thread and the lower thread can be safely transferred to the thread splicer and there, as usual, be spliced again to a continuous thread.
The yarn guide channel is also equipped on the input side with a telescopically mounted suction cup, which can be lowered to receive the thread via the supply spool (claims 8). The squeegee is lowered to accommodate the lower thread in the direction of the supply spool and positioned above the yarn winding, that between the yarn turns and the squeegee is given a relatively small gap. The upcoming in Fadenleitkanal negative pressure generated in the region of this relatively small gap high flow velocities, which favors the thread detection significantly. After the thread detection, the squeegee is again removed from the area of the yarn windings and then assumes a position advantageous for the winding process above the supply spool positioned in the unwinding position.
Another advantage of the telescopically mounted suction cup is that, if necessary, easy repair circuits can be performed. That is, in a yarn break in the supply bobbin supply bobbin no longer must be discharged immediately from the unwinding, but by lowering the squeegee, the job can first automatically try to solve the lower thread back from the supply spool and provide for a new splicing.
The squeegee is in an advantageous embodiment, as described in claim 9, equipped with a shutter which allows a pneumatic closing of the entrance of Fadenleitkanals. Such closing of the thread guide channel is necessary, for example, when the upper thread is to be pneumatically released from the cross-wound bobbin by the suction head and transferred to the thread splicing devices via the thread guide channel.
In an advantageous embodiment, it is further provided to form the shutter so that it additionally acts as a remnant thread scissors (claim 10). Such a function can be realized in a relatively simple manner by an overstroke movement of the shutter.
As described in claim 11, the Fadenleitkanal on the output side, a suction head receiving housing, to which a limited pivotally mounted suction head, a positionable in various positions control flap and a third Saugluftstutzen are connected. The third Saugluftstutzen is particularly always used when a lot change has taken place and associated with the supply bobbin thread must be transferred to the thread handling device of a cheese change unit.
The suction head, as described in claim 12, are either pivoted to a first position in which the mouth of the suction head is positioned close to the surface of the cheese held in the winding cheese in a second position, in the after the thread take-up between the cheese and the mouth of the suction head a thread strand is stretched. In the first position, the suction head is positioned to receive the upper thread from the surface of the unwinding in the unwinding cheese, the second position assumes the suction head in the event of a cheese change, if the bobbin connected to the supply spool must be provided for a cheese change unit, that is, when a thread strand is to be stretched between the cheese and the mouth of the suction head.
Furthermore, the suction head, as set forth in claim 13, formed in two parts and mounted on its pivot axis, that the two Saugkopfteile are axially displaceable on its pivot axis to form a thread exit gap. That is, before the start of the winding process, first the two suction head parts are pushed apart so that the now rejoined thread between the two Saugkopfteilen pass through the thread guide drum and there can slide in the Fadenführungsnut the yarn guide drum.
As already indicated in connection with claim 11, the control flap arranged in the suction head housing can optionally be positioned in three positions (claims 14). A first position, in which the control flap is swung out as far as possible from the thread running path, forms a so-called winding position, in which the yarn originating from the supply bobbin and brought in via the yarn guide channel can easily run onto the yarn guide drum through the suction head receiving housing. In a second position, the so-called suction position, the control flap seals the suction head to the suction head receiving housing out, thereby ensuring that at the mouth of the suction head sufficient vacuum is present, which is particularly necessary for receiving a accumulated on the surface of the cheese coil thread is.
The third position of the control flap forms a so-called closed position. In this position the Fadenleitkanal is pneumatically sealed in the direction of the suction head. The closed position is used in particular when the bobbin thread is to be taken up by the supply bobbin and then transferred to the yarn splicing device.
As described in claims 15 and 16, it is also provided in a further advantageous embodiment that in the region of the suction head receiving housing a yarn feeder is installed, which is used in a batch change to provide a connected to the supply spool yarn for a cheese change unit. The yarn feeder is preferably designed as a feeder rod, the yarn guide element is positioned in the region of the suction port of the third Ansausstutzens. If necessary, that is, for lifting the thread in the area of the cheese change unit, the feeder rod can be moved in the vertical direction, thereby laying the thread for the yarn handling device of a cheese change unit ready.
The invention will be explained in more detail with reference to an embodiment shown in the drawings.
It shows:
1 arranged in perspective view in the area of a workstation of a cheesemaking fabricating textile machine, the thread running path enclosing, multi-part Fadenleitkanal, which is defined acted upon by negative pressure,
2A - 2C a suction head receiving housing of Fadenleitkanals with a pivotally mounted suction head and arranged in a Saugkopf-receiving housing control valve, in their various positions,
3 in side view, a suction head in the preparation of a required during a cheese change threadline,
4 a suction head with the two axially displaceably mounted suction head parts, in front view,
5 the suction head receiving housing with the suction opening of the third suction air nozzle and the yarn feeder arranged in the region of the suction opening, on a larger scale,
6 the extended yarn feeder with a coming from the supply bobbin, held ready for the yarn handling device of a cheese winding unit yarn.
The 1 shows a perspective view of a job of a cheese-producing textile machine, in the embodiment, the job 1 a so-called cross-winding machine. Such spoolers usually have a variety of identical jobs 1 on which feed bobbins 2 , usually produced on ring spinning machines spinning cops, which have relatively little yarn material, too large cross-wound bobbins 5 be rewound.
The finished cheeses 5 are then transferred by means of an automatically operating service unit, for example by means of a so-called cheese changer, on a (not shown) machine-long cheese transport means and transported to a machine end side arranged Spulenverladestation or the like.
The jobs such automatic packages are either equipped with a round magazine in which some spinning cops can be stored, or the automatic packages have a logistics facility in the form of a coil u. Sleeve transport system. In such, known per se coil and tube transport system run spinning cops or empty tubes, which are arranged in a vertical orientation on transport plates.
As in 1 indicated, the supplied feed bobbins 2 in the field of jobs 1 each positioned in an unwinding position AS and in this unwinding position AS on a cross-wound bobbin 5 rewound.
The individual jobs 1 For this purpose they have different thread monitoring and treatment devices, which ensure that the thread 29 is monitored for thread defects during the rewinding process and detected thread defects are cleared out. The jobs 1 Such automatic packages have, for example, a winding device 4 , a thread connecting device 8th , preferably in the form of a pneumatically operated thread splicing device, a thread tensioner 9 , a thread cleaner 10 and a yarn tension sensor 35 , Furthermore, such jobs may also be equipped with a paraffin device (not shown). The winding devices 4 these jobs 1 each have a coil frame 11 that is about a pivot axis 30 is movably mounted, as well as a cheese drive device. It is, for example, a thread guide drum 34 provided the cheese 5 rotates frictionally and ensures that the thread running on the spool 29 traversed at the same time.
How out 1 further apparent, extending between the position in the unwind AS position feed bobbin 2 and the winding device 4 a Fadenleitkanal enclosing the thread running path 6 , which can be acted upon with defined negative pressure in case of need. The thread guide channel 6 is the input side with a Abspulhilfseinrichtung 3 in the form of a telescopically formed suction cup 19 equipped, that is, the squeegee 19 is by means of a drive device 36 mounted in a displaceable manner in the vertical direction and, if necessary, for example, for receiving a thread end, at least partially via the supply spool 2 be lowered.
The thread guide channel 6 points in the thread running direction F behind the squeegee 19 a receiving section 33 for a thread tensioner 9 and following the receiving section 33 a relatively large housing 18 for a yarn splicing device 8th on. The thread guide channel 6 is further with recording sections 32 . 31 equipped in the direction of yarn thread F behind the receiving housing 18 are arranged and in which a thread cleaner 10 or a yarn tension sensor 35 are installed. In this area could also be a (not shown) receiving housing for a waxing in the Fadenleitkanal 6 be integrated. On the output side has the thread guide 6 via a suction head housing 21 , on which, limited pivoting, a suction head 22 is arranged.
The suction head housing 21 also has a control flap 23 on, as in the 2A - 2C represented, depending on the operating condition in different positions can be positioned.
The suction head housing 21 stands over a suction opening 28 to which a Saugluftstutzen 14 is connected, with a machine-long suction air duct 17 in connection. The suction air connection 14 is there, like the Saugluftstutzen 12 and 13 holding the receiving case 18 the thread splicing device 8th with the suction air duct 17 connect, for example via a diaphragm disc 15 optionally acted upon by negative pressure. That is, the rotatably mounted diaphragm disc 15 has defined positionable suction 16 depending on the position, ensure that one or more of the suction air connection 12 . 13 . 14 pneumatically continuous to the suction air duct 17 is connected / are.
Instead of in 1 shown aperture plate 15 are related to the Saugluftstutzen 12 . 13 . 14 Of course, other control devices conceivable. For example, each of the suction air nozzles could be connected to the suction air channel by a separate valve device or the like 17 be connected.
The 2A - 2C show a partial view of the end of the Fadenleitkanals 6 arranged suction head receiving housing 21 , wherein the suction head 22 is shown in its winding position and the control flap 23 each positioned in a different position.
The 2A shows the control flap 23 in their so-called suction position B.
In suction position B, the control flap provides 23 for the suction head 22 over the thread guide channel 6 and the suction head housing 22 is supplied with negative pressure, for example, when receiving the upper thread from the surface of the cheese 5 is mandatory. The 2 B shows the control flap 23 in its closed position C. In the closed position C is the control flap 23 positioned when on the input side of Fadenleitkanals 6 arranged squeegee 19 Negative pressure is required to lower the bobbin thread from the feed bobbin 2 take. The 2C shows the control flap 23 in its winding position A. In the winding position A is the control flap 23 positioned during the winding process. The winding position A allows the thread 29 without passing through the suction head 22 to run, directly on the thread guide drum 34 can run up.
The 3 shows the situation in the field of winding device 4 during a cheese change, that is, when on the finished cheese 5 auflaufende thread must be kept ready for the thread handling device a cheese change unit. As can be seen, it is pivotable on the suction head receiving housing 21 arranged suction head 22 after picking up the thread in one of the cheeses 5 pivoted second position, resulting in the formation of a threadline 24 between cheese 5 and the mouth of the suction head 22 leads. This thread strand 24 is before the ejection of the cheese 5 from the winding device 4 received by a corresponding yarn handling device of a cheese change unit, cut, and after positioning a new cheese package in the creel 11 applied to the new cheese package.
The 4 shows a front view of a suction head receiving housing 21 with a two-piece suction head 22 , As indicated by the arrows X and Y, the two suction head parts 22A and 22B be pulled apart axially so that between them, a gap formed by the recovered after the thread splicing thread 29 before resuming the winding process back on the thread guide drum 34 can slide.
The 5 and 6 show one in the region of the suction head receiving housing 21 installed thread feeder 25 , The thread feeder 25 is how in 6 shown as a feeder rod 26 trained, the one after a game change with the feed bobbin 2 connected thread 29 raises so that it is ready for the thread handling device of a cheese change unit or can be taken over by the thread handling device of the cheese change unit. The feeder rod is end with a thread guide element 27 equipped, at rest, like out 5 can be seen in the region of the intake opening 28 of the suction air connection 14 in the suction head housing 21 is positioned.
The mode of operation of a work station equipped with a yarn guide channel according to the invention is the following:
If there is a winding interruption during normal winding operation, for example due to a yarn breakage or a controlled cleaner cut, the so-called upper thread runs on the surface of the cheese 5 on, while the so-called bobbin thread either in the thread tensioner 9 remains clamped or back down on the feed bobbin 2 falls.
In order to restart the winding process following such a winding interruption, first the upper and lower thread must be connected again to a continuous thread. For this purpose, both the lower thread and the upper thread have to be in a receiving housing 18 the Fadenleitkanals 6 arranged thread splicer 8th brought and inserted into this. The thread splicing device 8th connects the yarn ends of the upper and lower thread then, preferably after cleaning any thread error again almost the same yarn.
To record the lower thread is first the aperture disc 15 adjusted so that the Saugluftstutzen 12 via a suction opening 16 the aperture disc 15 pneumatically continuous to the machine-long suction air duct 17 is connected while the Saugluftstutzen 13 and 14 however, remain closed. In addition, the control flap 23 in the suction head housing 21 in the closed position C ( 2 B ) and the shutter 20 at the squeegee 19 open. In this constellation arises in the area of Fadenleitkanals 6 a negative pressure flow from the squeegee 19 over the Saugluftstutzen 12 to the suction air duct 17 is directed. The usually in the thread tensioner 9 held lower thread is released and then slides under the influence of the negative pressure flow, through appropriate Leitkonturen in Fadenleitkanal 6 led to the suction air duct 17 and is doing properly in the housing 18 the Fadenleitkanals 6 arranged thread splicer 8th positioned.
For example, in the area of the suction air connection 12 arranged lower thread sensor 37 detects the presence of the lower thread and then initiates the upper thread detection.
Should the thread end of the lower thread after a yarn break, however, on the feed bobbin 2 can be dropped by lowering the squeegee 19 the bobbin thread from the feed bobbin 2 be sucked and passes over the Fadenleitkanal 6 in the suction air duct 17 , That is, one of the original coil 2 picked bobbin thread is properly in the yarn splicing device 8th positioned. To remove the thread from the feed bobbin 2 can support the squeegee 19 also be equipped with a device which is the introduction of a blast of compressed air on the winding cone of the feed bobbin 2 enables, which has a very positive effect on the Fadenablöseverhalten.
To capture the on the surface of the cheese 5 accumulated upper thread is the aperture disc 15 adjusted so that the Saugluftstutzen 13 via a suction opening 16 pneumatically continuous to the machine-long suction air duct 17 is connected while the Saugluftstutzen 12 and 14 stay closed. Furthermore, the at the suction head receiving housing 21 arranged control flap 23 positioned in its suction position B and the shutter 20 in the area of the squeegee 19 closed. In this constellation arises in the area of Fadenleitkanals 6 a negative pressure flow coming from the mouth of the suction head 22 over the Saugluftstutzen 13 to the suction air duct 17 is directed and which ensures that on the surface of the cheese 5 accumulated yarn end of the upper thread of the unwinding in the unwinding cheese 5 is removed.
The recorded upper thread passes over the Saugluftstutzen 13 in the suction air duct 17 and slides, similar to the lower thread through corresponding contours in Fadenleitkanal 6 guided properly into the housing 18 arranged yarn splicing device 8th , A preferably in the region of the suction air nozzle 13 installed upper thread sensor 38 detects the thread and then initiates the actual splicing process.
Also, the thread detection of the upper thread can be supported by additional measures. For example, the suction head, whose mouth opening for thread take-up is positioned immediately in front of the surface of the cross-wound bobbin, can be swung away somewhat from the cheese surface become. The resulting stall usually favors the thread detection.
When the top and bottom threads are in the area of the thread splicer 8th transferred and properly in the yarn splicing device 8th are positioned, the thread tensioner of the yarn splicing device 8th closed and the aperture disc 15 is adjusted so that both the Saugluftstutzen 12 , as well as the Saugluftstutzen 13 via suction openings 16 the aperture disc 15 pneumatically continuous to the suction air duct 17 are connected and therefore subjected to negative pressure. Due to the upcoming vacuum upper and lower thread are tightened. Then the actual splicing process is carried out, the remaining threads are sucked off and the winding process is restarted.
Before the start of the winding process, however, the through the connection upper thread / lower thread newly created, continuous thread 29 who is still in the suction head 22 is to be released. For this purpose, first on the suction head receiving housing 21 arranged control flap 23 pivoted into its winding position A and then the two suction head parts 22A and 22B drove something axially apart.
When moving apart of the two Saugkopfteile 22A . 22B in the direction of X or Y, the thread falls 29 through the between the suction head parts 22A . 22B resulting gap on the thread guide drum 34 ,
After closing the suction head 22 then the winding process is started, the suction head 22 preferably remains positioned so that the yarn guide drum 34 is largely covered during the winding process. By such a positioning of the suction head 22 above the fast rotating thread guide drum 34 On the one hand the risk of injury minimized by the rotating yarn guide drum 34 and on the other hand, a switching time gain is achieved since the suction head 22 is already positioned in its thread receiving position and does not have to be actively pivoted in its thread receiving position at a new Spulunterbrechung.
During the "normal" winding operation, the thread runs 29 , unwound from the feed bobbin positioned in unwind position AS 2 through the yarn guide channel 6 to the winding device 4 where he becomes a cheese 5 is wound up.
In the illustrated embodiment, the thread runs 29 initially through the open shutter 20 of the squeegee, the squeegee 19 , the recording section 33 , the receiving housing 18 , the recording sections 32 and 31 and the suction head housing 21 the Fadenleitkanals 6 , That is, the thread 29 goes through on his way to the winding device 4 first the squeegee 19 the Fadenleitkanals 6 and then passes to the Fadenleitkanalabschnitt 33 , a thread tensioner 9 encloses. The for adjusting a proper thread tension through the plates of the thread tensioner 9 applied thread 29 then passes to the receiving housing 18 a thread splicing device 8th and running, spaced apart from the thread splicer 18 , through the thread cleaner 10 in the corresponding receiving section 32 the Fadenleitkanals 6 arranged the thread 29 checked for thread errors. After passing through the thread cleaner 10 the thread arrives 29 to a receiving section 31 in which a yarn tension sensor 35 is arranged, by, through the thread 29 pressurized, the current thread tension detected.
After overrunning the yarn tension sensor 35 reaches the thread 29 the suction head housing 21 and runs on the opened control flap 23 over on a thread guide drum 34 that the thread that runs up 29 traversed.
Wide parts of the thread guide 6 , in particular the receiving housing 18 and the receiving sections 33 . 32 . 31 are covered during the winding process by a transparent cover element, on the one hand prevents the thread from being adversely affected from the outside and on the other hand ensures that it can not come in the area of the job during the winding process to contamination by fiber fly, dust or the like.
Advantageously, the aperture disc 15 adjusted during the winding process so that, for example, the Saugluftstutzen 12 constantly slightly pressurized, which has the advantage that through the suction air 12 in the yarn guide channel 6 upcoming vacuum flow of the example in Fadenleitkanal 6 permanently accumulating fiber dust is disposed of reliably reliably, whereby also in the area of the feed bobbin and in the region of the cross-wound bobbin dust is largely sucked with.
Of course, can also be provided in an alternative embodiment, the Fadenleitkanal 6 during the winding operation only at predetermined intervals to apply vacuum, and to save energy in this way.
To the thread after a game change from a new supply reel 2 in the area of the suction head receiving housing 21 to convict, the aperture disc 15 turned so that the Saugluftstutzen 12 and 13 are closed and the suction air 14 via a suction opening 16 is subjected to negative pressure. In addition, the on the suction head housing 21 arranged control flap 23 closed and the shutter 20 at the squeegee 19 open. The thread of the feed bobbin 2 is in such a case by the Fadenleitkanal 6 to the suction head receiving housing 21 sucked and passes through the suction port 28 in the suction head housing 21 and the suction air connection 14 in the suction air duct 17 , When sucking into the suction opening 28 the thread slides 29 on the thread guide element 27 of the thread feeder 25 that's the thread 29 then prepares for the thread handling device of a cheese change unit.
The invention is of course not limited to the embodiment described above, but may also have other embodiments or equipment variants, without departing from the general inventive concept. Instead of in 1 illustrated, adjustably mounted aperture plate 15 could the Saugluftstutzen 12 . 13 . 14 for example, via (not shown) separately arranged valve means to the suction air duct 17 be connected. Also in the area of the squeegee 19 arranged shutter 20 by no means, as in 1 indicated schematically, be designed as a pivotally mounted closure plate, but could also be realized by a different closure mechanism.
QUOTES INCLUDE IN THE DESCRIPTION
This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
Cited patent literature

DE 102005001093 A1 [0002]
DE 19617525 A1 [0004]
DE 102005018381 A1 [0005]

Claims

Workstation of a textile machine producing cross-wound bobbins, with a thread take-up device arranged in the region of the unwinding position of a supply bobbin, thread monitoring and treatment devices installed in the region of a thread runway, and a winding device for producing a cheese, characterized in that the work station ( 1 ) a the Fadenlaufweg enclosing, multi-part Fadenleitkanal ( 6 ) with receiving housings ( 18 . 21 ) or recording sections ( 31 . 32 . 33 ) for different thread monitoring and treatment devices, wherein the thread guide channel ( 6 ) between the supply reel (AS) positioned in the unwinding position (AS) 2 ) and the winding device ( 4 ) and, if necessary, can be acted upon in sections so with negative pressure that in Fadenleitkanal ( 6 ) is present a negative pressure flow, the flow direction can be defined defined.
Workstation according to claim 1, characterized in that on the Fadenleitkanal ( 6 ) several suction air nozzles ( 12 . 13 . 14 ) are connected, via which the thread guide channel ( 6 ) can be acted upon in different directions with a negative pressure flow.
Workstation according to claim 2, characterized in that the Saugluftstutzen ( 12 . 13 . 14 ) to a machine-long suction air duct ( 17 ) and by means of an adjustable aperture ( 15 ), the defined positionable suction openings ( 16 ), optionally be acted upon by negative pressure.
Workstation according to claim 1, characterized in that during the winding process thread-leading areas of the Fadenleitkanals ( 6 ) as metallic die castings and the suction air nozzles ( 12 . 13 . 14 ) are formed as plastic parts.
Workstation according to claim 1, characterized in that the thread guide channel ( 6 ) is accessible at least in a partial area via a removable cover element.
Workstation according to claim 5, characterized in that the removable cover element is made of a transparent plastic.
Workstation according to claim 1, characterized in that in the Fadenleitkanal ( 6 ) a receiving housing ( 18 ) for a yarn splicing device ( 8th ) is integrated, to which a first Saugluftstutzen ( 12 ) for aspirating with the feed bobbin ( 2 ) associated lower thread and a second Saugluftstutzen ( 13 ) for sucking one with a cheese ( 5 ) connected upper thread are connected.
Workstation according to claim 1, characterized in that the Fadenleitkanal ( 6 ) on the input side with a telescopically mounted suction cup ( 19 ) is equipped, the thread for receiving partially on the supply spool ( 2 ) is lowered.
Workstation according to claim 8, characterized in that the squeegee ( 19 ) with a shutter ( 20 ), which, if necessary, a pneumatic closing of the entrance of Fadenleitkanals ( 6 ).
Workstation according to claim 9, characterized in that the shutter ( 20 ) is designed so that it also acts as a remnant thread scissors.
Workstation according to claim 1, characterized in that the Fadenleitkanal ( 6 ) on the output side, a suction head receiving housing ( 21 ), to which a limited pivotally mounted suction head ( 22 ), a positionable in various positions control flap ( 23 ) and a third Saugluftstutzen ( 14 ) are connected.
Workstation according to claim 11, characterized in that the suction head ( 22 ) between a first position (I), in which the mouth of the suction head ( 22 ) for detecting the thread close to the surface of the in the winding device ( 4 ) held cheeses ( 5 ), and a second position (II), in which after the thread detection between the cheese ( 5 ) and the mouth of the suction head ( 22 ) a thread strand ( 24 ) is stretched, is adjustable.
Workstation according to claim 11, characterized in that the suction head ( 22 ) is formed in two parts and is mounted on its pivot axis, that the two Saugkopfteile ( 22A . 22B ) are axially displaceable to form a thread exit nip on the pivot axis.
Workstation according to claim 11, characterized in that the control flap ( 23 ) is selectively positionable in three positions (A, B, C), wherein a first position (A) forms a winding position, a second position (B) a suction position and a third position (C) a closed position.
Workstation according to one of claims 11-14, characterized in that in the region of the suction head receiving housing ( 21 ) a thread feeder ( 25 ), which is used in a batch change, to a in the third Saugluftstutzen ( 14 ) sucked in thread ( 29 ) of a supply spool ( 2 ) to a thread handling device of a cheese change unit to transfer.
Workstation according to claim 15, characterized in that the thread feeder ( 25 ) when Feeder rod ( 26 ) and with a thread guide element ( 27 ), which in the rest position in the region of the intake opening ( 28 ) of the third suction air nozzle ( 14 ) is positioned.