EP2388224A2 - Operating unit - Google Patents

Abstract

The assembly (23) has a thread releaser e.g. pneumatic thread releaser or friction thread releaser, activated by a control device (38) when a suction nozzle comprises a working position (2) after thread breakage problems during accommodation of a thread end of a thread. The thread end runs towards a cross wound bobbin (11). The thread releaser is activated at a region of the cross wound bobbin by the control device for releasing the thread end. The cross wound bobbin is rotated in an unwinding direction and is held at a coil frame at the working position.

Description

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

Operating units for cheesemaking textile machines that have a variety of jobs, which in turn each have different coil and thread handling equipment, such as a creel, a gripper tube and a suction nozzle have long been known and described in detail in numerous patents.

Such operating units, which are designed, for example, as cross-wound bobbin changers, are generally arranged so as to be movable on raceways and, if necessary, help with the workstations.

In the DE 10 2007 036 696 A1 For example, a cross-bobbin changer is described, which has landing gears, with which it is movably mounted on machine-length raceways, which are arranged above the jobs of a cheese winder.

The well-known cheese changer supplies if necessary automatically the jobs of the aforementioned textile machine. That is, the cheese changer ensures, for example, that cheeses that have reached a predetermined diameter are transferred to a textile machine's own transport device.

Subsequently, the cheese changer changes from a work-own sleeve magazine a new empty tube in the creel of the relevant job.

The cheese changer is equipped for this purpose with various handling elements, which are required in the course of the change process cross coil / empty tube.

Such cheese packages have, for example, a frame opener, a frame lifter, a coil guide device, a sleeve feeder and a thread lifter.

In the in the DE 10 2007 036 696 A1 described cross-coil changer, the drive of the various handling elements via individual electromotive drives, which are each connected to a cross coil changer own control device.

Instead of a large number of individual drives, however, such a cheese changer can also have a central drive which drives a cam disk package to which the various handling elements are connected via corresponding lever linkage.

Although the known reciprocating machines have numerous handling elements, these control units are so far not able to intervene helpfully if, for example, the workstation's own suction nozzle has difficulties in receiving a accumulated after a thread break on the lateral surface of a cheese or adhering to one of the side walls of the cheese ,

So far, a manual intervention by the operating personnel was always necessary in such a case.

Based on the above-described prior art, the invention has the object to modify a cheese change to the effect that he can intervene to help if necessary at a job.

That is, if after a thread interruption at a job difficulties in the thread take-up, the cheese changer helping so intervene that the working own suction nozzle accumulated after a yarn breakage or a controlled thread cleaner cut, for example, on the lateral surface of a content in the creel of a job cheesy cheese thread end of the upper thread can reliably absorb.

This object is achieved by an operating unit having the features described in claim 1.

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

The use of an operating unit according to the invention has the particular advantage that it can be ensured relatively cheaply and thus relatively inexpensively at the jobs of a cross-wound textile machine that accumulated after a Spulunterbrechung on the surface of the cheese or adhering to one of the side surfaces of the cheese Thread, even in the presence of difficult conditions, easily absorbable by the workstation's own suction nozzle and can be transferred through the suction nozzle to the splicer.

That is, if a suction nozzle has difficulty in receiving the upper thread, for example, because it is heavily rolled into the surface of the cheese, the operating unit equipped with a thread releaser is simply requested.

The operating unit then works with his activatable by means of the control device of the operating unit thread remover at the job in question in the unwinding cheese and puts the yarn end of the upper thread always ready so that it can then be easily detected by the workstation's own suction nozzle.

While so far in the case of non-detection of the thread end of the cheese by the suction nozzle had to intervene, which was often associated with productivity loss due to the overload of the operator, now the control unit can take on this task.

In this case, the function according to the invention can be extended, depending on which capacity has the operating unit beyond the usual changeover requirement.

For example, the negative pressure applied to the suction nozzle can be reduced if the associated increasing number from not detecting the yarn end solely by the suction nozzle only leads to an increased use of the operating unit within its free capacity respectively within the performance of its thread remover.

That is, if the suction nozzle requires only a relatively low vacuum both for receiving "normal" thread ends as well as for receiving prepared by a thread solver thread ends, the hitherto at the suction nozzles pending negative pressure, which is designed so that, if necessary, difficult as possible To be solved thread ends could be recorded, significantly reduced and thus energy saved.

As described in claim 2, it is provided in an advantageous embodiment that the thread remover is arranged on the coil guide device of the cheese changer.

That is, the thread remover is fixed to an existing, controlled controllable handling element of the cheese changer, with the result that keep the modifications to the cheese changer within limits.

According to claim 3, the thread remover is designed as a friction thread remover. With such a friction thread remover also strongly rolled thread ends can be processed relatively easily so that the workstation's own suction nozzle can safely pick up the thread end.

To achieve this goal, the friction thread remover is controllable so that it can be placed on demand, if necessary, on the lateral surface of the cheese held in the creel of a job cross cheese or applied to one of the side surfaces of the cheese.

The friction thread remover preferably has at least one brush-like release element for this purpose. By such a brush-like design of the or the release elements is on the one hand to ensure a gentle treatment of the cross-wound bobbin during the detachment process, on the other hand can be ensured with such a device that even with difficult yarns, for For example, in yarns that are strongly rolled into the lateral surface or hairy yarns that have hooked in the lateral surface or one of the side surfaces, the relevant thread end can be reliably prepared.

According to claim 4, it is provided in an alternative embodiment that the thread remover is designed as a pneumatic thread remover, which has a blowing nozzle device which initiates by means of a blown air jet, the release of the thread end of an accumulated on the lateral surface of the cheese or adhering to one of the side surfaces of the cheese.

That is, by means of a Blasdüseneinrichtung arranged on the cross-coil changer, preferably while the cheese rotates slowly opposite to the unwinding, a Blasluftströmung given to the cheese so that the yarn end of the upper thread is lifted from the cross-wound bobbin.

In a further advantageous embodiment (claim 5), it is provided that the cheese changer has a thread releasing device which has both a brush-like release element and is equipped with a blowing nozzle device.

That is, the bobbin guide device of the cheese changer is equipped with a blowing nozzle device, which supports the friction thread release in case of need when loosening the thread end.

For example, the blowing nozzle device can always be switched on when a first attempt or several attempts to lift the thread end alone with the mechanical friction thread remover from the cross-wound bobbin so that it can be picked up by the suction nozzle of the workstation have failed.

The decision as to whether or not the blowing nozzle device has to be activated can be made dependent, for example, on the signal of a sensor device arranged inside the workstation's own suction nozzle.

With such per se known sensor devices is so far only monitored whether a suction nozzle was successful in their attempt to receive an upper thread.

As described in claim 6, it is also provided in an advantageous embodiment that the coil guide device is the Friktionsfadenlöser depending on specifiable requirements, such as an advantageous contact pressure, on the lateral surface of the cheese can be adjusted. Such a design ensures that the friction thread remover is always positioned not only independently of the size and / or width of the cheese to be handled but also very fine and thus thread-saving, but that the Friktionsfadenlöser also, for example, depending on the yarn material or the yarn number, with a predefinable, advantageous contact pressure can be applied to the cheese.

Similar advantages are achievable with the embodiment described in claim 7, in which the strength of the blast air jet of the blast nozzle device of the thread remover designed as a pneumatic thread remover is adjustable.

Even with such a device, for example, depending on the yarn material or the yarn number, a gentle detachment of the thread end of the cheese can be realized.

As set forth in claims 8 and 9, in connection with the various handling devices of the cheese changer preferably single-motor electric drives in the form of stepper motors are used, which are connected in an advantageous embodiment via control lines to the control device of the cheese changer.

The advantage of the use of stepper motors and their control by the cross coil changer own control device is on the one hand in the compact design of such drives and on the other hand in the relatively low cost, which is necessary to drive such drives with great accuracy.

That is, through the use of a stepper motor, it is possible to ensure that, for example, the friction thread remover is always placed reliably and with exactly metered contact pressure on the lateral surface of the cross-wound bobbin or applied to one of the side surfaces of the cross-wound bobbin in each application.

The invention will be explained in more detail with reference to an embodiment shown in the drawings.

Fig.1

eine Vorderansicht einer Kreuzspulen herstellenden Textilmaschine mit einer Vielzahl von Arbeitsstellen und einem fahrbar gelagerten, erfindungsgemäß ausgestatteten Bedienaggregat, vorzugsweise eines Kreuzspulenwechslers,

Fig.2

in Seitenansicht, gemäß Schnitt II-II der Fig.1, einen an einer Arbeitsstelle der Kreuzspulen herstellenden Textilmaschine positionierten Kreuzspulenwechsler, dessen mittels einer Steuereinrichtung aktivierbarer Fadenlöser als Friktionsfadenlöser ausgebildet ist,

Fig.3

eine perspektivische Ansicht eines Kreuzspulenwechslers, gemäß Blickrichtung des Pfeils X in Fig.2, wobei der Kreuzspulenwechsler eine Fadenlöseeinrichtung aufweist, die sowohl über ein bürstenartig ausgebildetes Löseelement als auch über eine Blasdüseneinrichtung verfügt,

Fig.4

eine perspektivische Seitenansicht einer Arbeitsstelle der Kreuzspulen herstellenden Textilmaschine, mit einem gemäß Fig.3 ausgestatteten Kreuzspulenwechsler, der die Fadenlöseeinrichtung im Einsatz hat.

It shows:

Fig.1

a front view of a cheese-producing textile machine with a plurality of jobs and a movably mounted, inventively equipped control unit, preferably a cheese changer,

Fig.2

in side view, according to section II-II of Fig.1 a cross-bobbin changer positioned at a textile machine producing a workstation of the cross-wound bobbins, the thread releaser of which can be activated by means of a control device being designed as a friction thread releaser,

Figure 3

a perspective view of a cheese change, according to the direction of the arrow X in Fig.2 wherein the cheese changer has a thread release device which has both a brush-like release element and a blowing nozzle device,

Figure 4

a perspective side view of a job of the cheese-producing textile machine, with a according to Figure 3 equipped cheese changer, which has the thread release device in use.

In Fig. 1 is a front view schematically a cross-wound producing textile machine, in the exemplary embodiment a marked with the reference numeral 1 cross-winding machine shown. Such spooling machines 1 usually have a plurality of similar, juxtaposed jobs 2 and at least one Maschinenendgestell 36.

As is known and therefore not explained in more detail, the spinning heads 9 produced on a ring spinning machine (not shown) are rewound to large-volume cheeses 11 on the workstations 2.

The finished cheeses 11 are then transferred by means of an automatically operating control unit 23, preferably a cheese changer, on a textile machine own cross-wound bobbin conveyor 21 and conveyed to a machine end side (not shown) Spulenverladestation or the like.

Such automatic packages 1 usually have a logistics device in the form of a bobbin and tube transport system 3, in which, on transport plates 8, spinning cops 9 or empty spinning spindle sleeves 34 rotate.

Furthermore, such automatic packages 1 usually have a central control unit 37, which is connected, for example via a machine bus 40, both with the workstation computers 39 of the individual workstations 2 and with the control device 38 of the workstations 2 serving cheese changer 23.

The cheese changer 23 is mounted with carriages 24, 25 on machine-length raceways 26, 27, which are arranged above the work stations 2, movable.

The drive rollers 24 are connected to individual drives, preferably to stepper motors 70, 71 and can be controlled via the control device 38 of the cheese changer 23 defined.

The cheese changer 23 ensures, if necessary, that the finished on the workstations 2 cheeses 11 are properly transferred to the cheese transport means 21 and then each automatically changes a cheese spool sleeve 28 in the creel 18 of the relevant job 2 a.

The corresponding cross-coil blank sleeve 28 preferably removes the cheese changer 23 from a reel-end empty-tube magazine 22, which is arranged above the workstation 2 in each case.

As already indicated above, such automatic packages 1 usually have a bobbin and tube transport system 3, of which in Fig.2 only the machine-length Spinnkopszuführstrecke 4, the running behind the jobs 2, reversing driven storage section 5, one of the leading to the jobs 2 transverse transport sections 6 and the empty tube return path 7 is shown.

The spinnerets 9, which have relatively little yarn volume, are rewound into bulky packages 11 in the unwinding positions 10, which are located in the region of the transverse transport sections 6.

The individual jobs 2 have for this purpose, as is well known and therefore only hinted at various facilities that ensure the proper operation of such jobs 2.

The Fig. 2 shows a side view of a workstation 2 of a cheese winder 1, at which a cross coil changer 23 according to the invention is positioned.

In Fig.2 is the current from the spinning cop 9 to cheese 11 with the reference numeral 30, a spool own suction nozzle with 12, a gripper tube 42, a splicer 13, a thread tensioning device 14, a thread cleaner with thread trimmer 15 and a paraffin with 16.

Such winding units 2 furthermore have a winding drum 17, which can be acted upon by an electromotive individual drive 50, which rotates the cross-wound bobbin 11, which is held in a creel 18, during the winding process via frictional engagement.

In the embodiment, below the coil frame 18 which is pivotally mounted about an axis 19, also limited to pivot about the pivot axis 19, a pivot plate 20 is arranged, via which a finished cross-wound bobbin 11 on the running behind the jobs 2 cross bobbin transport device 21 can be transferred.

As in Fig.2 further indicated, the jobs 2 of the automatic winder 1 are powered by an automatically operating cheese change 23.

That is, the cheese changer 23 ensures that cross-wound bobbins 11, which have reached a predetermined diameter, are transferred to the cross-bobbin transport device 21 and that subsequently a new cheese spool sleeve 28 is loaded into the bobbin frame 18, which the cheese winder 23 removes, for example, from a stand-alone empty tube magazine 22 ,

The most important in the course of a change process cross coil / empty tube needed, preferably single motor drivable handling elements of the cheese changer 23 are in the Figures 2 and 3 shown.

These important handling elements include, for example, the frame opener 29, the frame lifter 32, the coil guide device 33, the sleeve feeder 31 and the thread lifter 41. The individual handling elements can each be controlled via one of the stepper motors 51 - 55, which for this purpose are each via one of the control lines 58 - 62 are connected to the control device 38 of the cheese changer 23.

That is, the frame opener 29 has a stepping motor 52, which in turn is connected via a control line 59 to the control device 38 of the cheese changer 23.

The stepper motor 51 for the frame lifter 32 is correspondingly connected via a control line 58 to the control device 38. The coil guide device 33 preferably has two stepper motors 53, 55, which can each be controlled separately.

By means of the stepping motor 53, the Spulenführungsarm 43 A can be pivoted defined, while the Spulenführungsarm 43 B via the stepping motor 55 is pivotable.

The stepper motors 53, 55 are also connected via corresponding control lines 60, 62 to the control device 38 of the cheese changer 23.

Furthermore, a stepper motor 54 for positioning a tube gripper 31 and a (not shown) stepping motor for adjusting a thread lifter 41 is provided.

These stepper motors are also connected to the control device 38 via a control line. The stepper motor 54 is connected, for example via the control line 61 to the control device 38 of the cheese changer 23. According to the present invention, the cheese changer 23, however, not only intervenes in a change process cheese / empty tube at the jobs 2, but is also helping if it at one of the jobs 2 after a yarn breakage or after a controlled cleaner cut to difficulties in the resumption of, for example comes on the lateral surface 46 of the cheese 11 accrued upper thread.

That is, the cheese changer 23 intervenes when one of the working own suction nozzle 12 has difficulties in the recovery of a top thread, because the yarn end of this upper thread, for example, too much rolled into the lateral surface of the cheese 11.

The cheese changer 23 according to the invention is equipped for this purpose, for example, with a Friktionsfadenlöser 44 which is activated by means of the control device 38 of the operating unit 23.

This friction thread releaser 44 is preferably attached to the spool guide 33 and may be used as required in FIG Figure 4 represented, are placed on a cross winding 11 slowly rotating in the unwinding R.

In an advantageous embodiment, the friction thread releaser 44 has at least one brush-like release element 45. The release element 45 is formed for example by two round brushes, which are gently placed on the lateral surface 46 of the cheese 11.

In a further alternative embodiment, the cheese changer has a special thread release device.

That is, except a Friktionsfadenlöser 44 is still a Blasdüseneinrichtung 47 installed, directed to the lateral surface 46 of the cheese 11 Blasluftströmung 48 if necessary, also by the control device 38 of the operating unit 23rd can be activated and then supports the detachment of the thread end of the lateral surface 46.

Function Description:

If it comes to one of the jobs 2 of the automatic winder 1 difficulties when rewinding after a yarn breakage or a controlled cleaner cut, because the betriebstelleneigne suction nozzle 12 can not suck the accumulated example on the lateral surface 46 of the cheese 11 upper thread, the competent cheese change 23 of Textile machine requested.

The cheese changer 23, which, as explained above, in addition to handling devices for changing a finished cheese 11 against an empty tube 28 and an activatable by means of its control device 38 thread remover 44, positioned in front of the relevant job 2 and pivots its coil guide device 33 from the in Fig.2 illustrated rest position in the in Figure 4 shown operating position.

That is, the Spulenführungsarme 43 A and 43 B of the coil guide device 33 are positioned by appropriate control of the associated stepper motors 53, 55 so that the release element 45 of the Friktionsfadenlösers 44 is placed on the outer surface 46 of the cheese 11.

The control device 38 of the cheese changer 23 controls the coil guide device 33 not only as a function of the particular cheese diameter present, but also in response to a desired contact pressure of the release element 45 on the lateral surface 46 of the cheese 11.

After placing the Friktionsfadenlösers 44 on the lateral surface 46 of the cheese 11, the bobbin 17 is switched to "unwind" and thereby according to the cross-wound bobbin 11 in the unwinding R rotates.

The thread end runs against the positioned on the lateral surface 46 of the cheese 11 release element 45 of the Friktionsfadenlösers 44 and is so far detached from the lateral surface 46 that it can be detected pneumatically by the suction nozzle 12.

The above-described detachment process of the thread end from the lateral surface 46 of the cross-wound bobbin 11 can also be assisted by a blowing nozzle device 47 arranged in the region of the friction thread releaser 44.

That is, by the control device 38 of the operating unit 23, a directed onto the lateral surface 46 of the cheese 11 Blasluftstrom 48 of the Blasdüseneinrichtung 47 can be activated, which effectively supports the detachment of the thread end of the lateral surface 46 of the cheese 11.

After successful absorption of the upper thread through the suction nozzle 12 of the job 2 of the thread remover 44 is deactivated and the cheese changer 23 is ready to take on a new task.

Claims (9)

Operating unit for a cheese-producing textile machine, which has a plurality of jobs, each with different bobbin and thread handling devices, such as a creel, a gripper tube and a suction nozzle and machine-length tracks has, on which preferably designed as a cheese changer operating unit is arranged movable in the If necessary, at the workstations performs cheese change and equipped for this purpose with handling equipment, such as with a frame lifter, a Rahmenöffner and a coil guide device,
characterized,
in that the operating unit (23) is equipped with a thread remover (44) which can be activated by means of a control device (38) and, if a suction nozzle (12) of a work station (2) encounters difficulties in picking up the thread end accumulated on a cross-wound bobbin (11) after a thread break a thread (30), at this workstation (2) is positionable and the thread remover (44) for releasing the thread end in the region of the coil frame (18) of this job (2) and Erten in the unwinding cross-wound cheese (11) by the control device (38) is activatable. Operating unit according to claim 1, characterized in that the thread remover (44) on the reel guide means (33) of the cheese changer (23) is arranged. Control unit according to claim 1, characterized in that the thread remover (44) is designed as a friction thread remover and at least one brush-like trained on the lateral surface (46) and / or the Side surfaces (49) of the cross-wound bobbin (11) attachable release element (45). Operating unit according to claim 1, characterized in that the thread remover (44) is designed as a pneumatic thread remover, which has a blowing nozzle device (47) by means of a blown air jet loosening the thread end of a on the lateral surface (46) of the cheese (11) accumulated or initiated on one of the side surfaces (49) adhering thread (30). Control unit according to claim 1, characterized in that the cheese changer (23) has a thread release device which has both a brush-like release element (45), and with a blowing nozzle device (47) is equipped. Control unit according to claim 3, characterized in that the friction thread remover (44) in dependence on specifiable requirements, such as an advantageous contact pressure, on the lateral surface (46) and / or on one of the side surfaces (49) of the cheese (11) is adjustable , Control unit according to claim 4, characterized in that the strength of the blast air jet of the blowing nozzle device (47) of the thread remover (44) designed as a pneumatic thread remover can be set in a defined manner. Operating unit according to Claim 1, characterized in that the handling devices (29, 31, 32, 33, 41) of the cheese changer (23) can be acted upon by individual electromotive drives, with stepping motors (51-55) preferably being used as individual drives. Operating unit according to claim 8, characterized in that the stepper motors (51-55) are connected via control lines (58-62) to a cross-coil changer-own control device (38).

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