DE102015007820A1 - Device for feeding a thread on a winding unit of an automatic winding machine - Google Patents

Abstract

The invention relates to a device for feeding a thread from a in the unwinding position 10 of a winding unit 2 of an automatic winding machine standing delivery reel 9, wherein the device for a Fadenendlöseeinrichtung 31 with nozzles 32 for the pneumatic detachment and transferring the thread end of the delivery reel 9 to a saugluftbeaufschlagbare Has thread end in a splicing device 13 inserting transport 24. According to the invention, the yarn end release device 31 has movably mounted blowing nozzles 32, and there is a control device 39, which initiates the movement of the blowing nozzles as a function of flow pulse parameters.

Description

The invention relates to a device for feeding a thread from a standing in the unwinding of a winding unit of an automatic winding machine feed bobbin, wherein the device for a yarn end release device with tuyeres for pneumatic detachment and transferring the thread end of the delivery bobbin to a saugluftbeaufschlagbare, inserting the thread end in a splicing device transporting having.

Such winder transfer a thread from a drain or feed bobbin on a package. For example, spin creels produced on a ring spinning machine come into question as a delivery reel. The winder makes it cross-cheeks ago, which are better suited for further processing of the wound thread. Such fully automatic cross-winding spooling machines are also referred to as cross-spooling machines.

In a so-called Kops- or game change not only an empty tube for the new package has to be used, but also a bobbin thread from the new delivery reel be provided to the winding process. Therefore, the lower thread must first be released from the new rewinding spool and transported to a transport device. The transport device, which is often designed as a so-called gripper tube, then positions the lower thread in the splicing device so that an almost yarn-like connection can be made with the upper thread coming from the package.

The bobbin thread detection can be performed completely manually by the operator. This can also be partially supported by automatic devices, or the entire process can be automated. For such support or automation usually mechanically controllable elements are used in combination with suction-air supplied elements to release the lower thread from the delivery bobbin and transfer to the transport device. Different approaches are known in the art.

For example, by the DE 38 43 553 A1 discloses a Garnlieferaggregat having a blow chamber enclosing the abzuspulenden spinning cop. It has in its interior tangentially and at the same time obliquely upward blowing nozzles for generating an air flow, which is directed in the thread unwinding helically through the space between the spinning cop and the blowing chamber gap up against the present at the winding unit thread take-up element. These nozzles are pressurized after Spinnkopswechsel and after a yarn breakage with compressed air. They extend essentially over the entire height of the blow chamber.

According to the DE 42 43 773 A1 It is known to arrange the nozzles on an annular support, which can be delivered due to its vertical displaceability of the delivery reel so that the nozzles are placed directly where the thread beginning is deposited in several turns.

Another alternative is provided by the method for detecting the yarn end of a bobbin according to the DE 44 34 304 B4 disclosed. In this case, both the blowing nozzles and the spinning cop are arranged stationary and a so-called yarn end receiving tube is down to a lower end position, in which it encloses substantially the entire spinning cop moves, so that amplifies the acting on the surface of the spinning cop air flow ,

A disadvantage of the methods and devices, as are known from the prior art, is that relatively much energy in the form of compressed air must be provided especially for the tuyeres. This is due in particular to the fact that delivery bobbins with different dimensions must be processed in terms of height, diameter and material. In addition, the known devices are complicated and structurally prone to failure. The moving parts of these handling devices are subject to a certain amount of wear and require a relatively large space for their drives.

The object of the invention is therefore to optimize the detachment and transfer of the thread end of the delivery bobbin to a transport device.

This object is achieved by the characterizing features of claim 1.

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

To solve the problem, according to claim 1, the yarn end release device on movably mounted blowing nozzles, and there is a control device which initiates the movement of the blowing nozzles in dependence on Ablaufspulparametern.

Characterized in that the blowing nozzles can be aligned at the time of high blowing on the part of the spinning cop, in which the thread end is for detachment, the detachment and transfer of the thread end can be realized with less energy in the form of compressed air. According to the invention, the relatively high compressed air consumption of the devices, as known from the prior art, can be drastically reduced.

Even different winding directions of the spinning cops can be considered according to the invention.

In addition, only a preferred spinning-disk parts achieves a higher intensity of the air flow in this area through the targeted blowing, so that according to the invention the thread end of the delivery bobbin is detected faster and more reliably. As a result, the productivity of the entire winder is increased and the efficiency is improved.

While in the prior art, the position of the nozzles had to be chosen so that on the one hand all Spinnkopsformate fit between the nozzles and on the other hand, the thread balloon formed during the winding process does not touch the tuyeres, the positioning of the tuyeres can now be chosen flexibly even when complying with the requirements described above ,

As described in claim 2, in a preferred embodiment of the invention, the movement of the blowing nozzles by a pneumatic cylinder, which controls a valve that controls the Blasluftstärke the Fadenendlöseeinrichtung.

Instead of arranging an additional valve in the automatic winder, it is useful in the context of the invention, if the valve is used to control the blowing nozzles, which turns the blowing air on or off. Through the use of a distributor, the remaining pressure prevailing in the line of the valve can be used to control the pneumatic cylinder for the movement of the blowing nozzles.

Of course, it is within the scope of the invention also possible to control the pneumatic cylinder by a separate valve.

According to claim 3, the control means preferably controls the movement of the blast nozzles on the basis of pre-entered expulsion pulse parameters.

In order to achieve the advantages according to the invention, the movement of the blowing nozzles is carried out as a function of flow-rate parameters. Under Ablaufspulparametern according to the invention, for example, on the one hand different Spinnkopsformate that vary in height and diameter, on the other hand, but also the nature of the material to be processed, the direction of winding and on which spinning head part the thread end should be on the spinning cop.

Thus, for each type of waste spool, the ideal movement of the tuyeres can be specified, that is entered and stored and thus ultimately selected. In this case, the input of the Ablaufspulparameter or the selection of the Blasdüsenbewegung either locally at each individual workstation, usually via the winding station computer, or centrally via the central control unit.

Alternatively, as set forth in claim 4, the control means controls the movement of the blowing nozzles due to a sensory detected shape of the delivery bobbin.

Instead of selecting the Blasdüsenbewegung at the beginning of a game on a control device, it is also conceivable within the scope of the invention that a sensor detects the presence of a spinning cop in the unwinding position. This signal is then sent in addition to the detected Ablaufspulparametern, such as height and diameter to the controller, which then controls the movement of the nozzles as needed.

Sensors and the manner of forwarding signals are well known and widely described in the prior art. Therefore, a detailed description is omitted here. The example becomes DE 1 278 308 B cited. This discloses an opto-electrical sensor which can be used by way of example in the present invention. The description concerns the irradiation of a spinning-disk sleeve by means of a light source, wherein the light reflected by the spinning-disk sleeve is detected with the aid of a photocell. The light beam reflected from the spinning head sleeve will influence more or less the photocell depending on whether there is a remaining winding on the spinning head sleeve or not. Such a sensor is, for example, also able to detect the delivery bobbin.

In a preferred embodiment of the invention, as described in claim 5, a stopper is provided which limits the extension path of the pneumatic cylinder.

Since the movement of the blowing nozzles is controlled with extending pneumatic cylinder, it may be useful to limit the maximum possible extension path of the pneumatic cylinder. In this way it can be ensured in a simple manner that the tuyeres, which are arranged, for example, side by side in a cylindrical body, respectively the cylindrical body, not even touch the winding on the spinning cop / touches.

The inventive construction of a device for commissioning a Spool, especially after a batch change, the movement of the nozzles can be easily and easily carried out according to the respective delivery bobbin.

The invention is explained in more detail below with reference to embodiments. In the accompanying drawings show:

1 a schematic side view of a winding unit of a winder;

2 a schematic view of a device according to the invention;

3 an alternative embodiment of the device according to the invention during the winding process;

4 in the 3 illustrated device when loosening a thread from the spinning cop;

5 in the 4 illustrated device in a different perspective.

In 1 is a side view schematically a winding unit 2 an automatic winder shown. Such automatic winding machines usually have between their end frames a plurality of such similar winding units 2 on.

On these winding units 2 are, as known and therefore not explained in detail, on a (not shown) ring spinning machine produced spinning cops 9 to large-volume cheeses 11 rewound.

The during the winding process in a pivotally mounted creel 18 supported cheeses 11 be after their completion by appropriate pivoting of the creel 18 around a pivot axis 19 on a cheese conveyor 21 transferred behind the winding devices of the winding units 2 is arranged. About the cheese conveyor 21 become the cheeses 11 then transported to a textile machine end side arranged (also not shown) Spulenverladestation or the same.

Such winding machines usually also have a logistics device in the form of a coil and sleeve transport system 3 , In this coil and tube transport system 3 run, on transport plates 8th positioned in vertical orientation, spinning cops 9 or empty tubes 9 ' around.

Furthermore, such winders have a (not shown) central control unit, which via a machine bus with the individual winding stations 39 the winding units 2 connected is.

Of the above-mentioned, relatively extensive overall coil and tube transport system 3 are in 1 only the machine-length Kopszuführstrecke 4 behind the winding units 2 extending, reversible storage path 5 , one of the winding units 2 leading transverse transport routes 6 as well as the sleeve return path 7 shown.

The over the Kopszuführ range 4 supplied spinning cops 9 be in Abspulstellungen 10 , each located in the area of the transverse transport routes 6 at the winding units 2 located, too large cheeses 11 rewound.

The individual winding units 2 For this purpose, as known per se and therefore not explained in more detail, about various devices that ensure proper operation of these winding units 2 guarantee.

In 1 is for example with 12 a suction nozzle, with 24 a gripper tube, with 13 a splicer, with 14 a thread tensioning device, with 15 a thread cleaner with thread trimmer and with 16 a paraffining device indicated.

The coil drive, which in the present embodiment in a bearing housing on the creel 18 integrated, bears the reference number 17 ,

During the winding process is the cheese 11 in sleeve receiving plates of the creel 18 held and lies with its surface on a supporting role 20 on. The support roller 20 is doing by the driven cheese 11 taken over friction.

In the area of the supporting role 20 is a Fadenchangiereinrichtung 22 installed, as in the example DE 198 58 528 A1 is described.

Furthermore, the individual winding units 2 in the area of its supporting role 20 in each case a defined controllable clamping and cutting device 23 on.

Each winding unit 2 is also equipped with a defined controllable intake manifold 1 and one in the area of the thread tensioner 14 arranged bearing plate 26 fitted.

The suction tube 1 is about a pivot axis 32 limited rotatably mounted and by means of a stepper motor 29 Positionally positionable and can so from the thread receiving position I in a Turn the thread transfer position to the thread 28 to one in the area of the coil frame 18 arranged, in total with the reference number 23 to be given marked clamping and cutting device.

At the beginning of the winding operation, that is, after a game change, the individual winding units 2 the winder first with spinning cops 9 supplied with the new yarn section.

That means in every winding unit 2 drives over the transverse transport route 6 at least a spinning cop 9 one in the area of the winding unit 2 in a unwind position 10 is fixed.

Subsequently, for example, at the sleeve tip of the spinning cop 9 prepared thread 28 , as usual, by a in the field of unwinding position 10 the job 2 arranged Fadenendlöseeinrichtung 31 blown up and from the gripper tube 24 added.

2 shows an enlarged view of the vertically movably mounted Fadenendlöseeinrichtung 31 , which, as is known, at the beginning of a game to the height of the spinning cop to be processed 9 is set up accordingly. Above the blowpipes 38 there is a deduction accelerator 37 , to which the remaining thread scissors 42 followed. Through the exhaust pipe 40 the thread is taken from the spinning cop 9 coming off. With the reference number 41 is the Kopsentstaubungseinrichtung marked.

Through the blowpipes 38 the blown air reaches the blowing nozzles 32 movable in the housing of the thread release device 31 are stored. The tuyeres 32 the compressed air blows on the spinning cop 9 in that the spinning-disk part on which the prepared thread is 28 is here, for example, at the sleeve tip, the compressed air jet is exposed. The compressed air turns the thread 28 from the sleeve tip of the spinning cop 9 dissolved and upwards in the direction of the gripper tube 24 blown and captured by this.

Then the hook tube pivots 24 up and positioned the thread 28 as also known, in a splicer 13 ,

3 shows an alternative embodiment of the device for feeding a thread during the winding process. The tuyeres 32 are here formed as a plurality of juxtaposed openings in a cylindrical body.

A valve 34 , which also the blowing air of the thread release device 31 controls, if necessary, directs the compressed air via the compressed air line 33 further into the pneumatic cylinder 36 , The pneumatic cylinder 36 is retracted during the winding process and via a coupling 46 with a central gear 43 connected. Both nozzles 32 are over an upper line 47 connected with each other. On each side, above the tuyeres 32 , there is a gear 44 as well as a distributor 35 , via a lower line 48 are the tuyeres of the left side with the pneumatic cylinder 36 connected.

In 4 the same device is shown, however, when loosening a thread 28 from the spinning cop 9 that is, with the spinning cop 9 supplied tuyeres 32 ,

The compressed air passes over the valve 34 through the pressure line 33 into a distributor 35 for the supply of compressed air to the right tuyeres 32 and for the forwarding of the compressed air, through the upper line 47 , to the left tuyere 32 responsible is. On this upper pipe 47 there is another distributor 35 , This distributor 35 is for the supply of compressed air to the left tuyeres 32 and for the transmission of compressed air through the lower line 48 , to the pneumatic cylinder 36 responsible, which extends when compressed air. Through the coupling 46 becomes the central gear in this way 43 emotional. The central gear 43 stands with both gears 44 in contact, in turn, each with the tuyeres 32 keep in touch. Drives accordingly the pneumatic cylinder 36 due to the compressed air, the central gear rotates 43 , thereby also the gears 44 and these in turn control the tuyeres 32 such that the tuyeres 32 near the spinning cop 9 be panned.

5 shows the same situation as 4 but from a different perspective. For this reason, a renewed description of the already in 4 Described machine elements omitted. It can be clearly seen that the tuyeres 32 near the spinning cop 9 and so the coming of the spinning cop thread 28 solve reliably and safely and through the trigger accelerator 37 and the exhaust pipe 40 to a gripper tube 24 convict.

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 3843553 A1 [0005]
• DE 4243773 A1 [0006]
• DE 4434304 B4 [0007]
• DE 1278308 B [0025]
• DE 19858528 A1 [0046]

Claims (5)

Device for feeding a thread from one in the unwinding position ( 10 ) a winding unit ( 2 ) an automatic winder standing feed bobbin ( 9 ), the device comprising a thread release device ( 31 ) with tuyeres ( 32 ) for the pneumatic detachment and transfer of the thread end of the delivery bobbin ( 9 ) to a saugluftbeaufschlagbare, the thread end in a splicing device ( 13 ) inserting transport device ( 24 ), characterized in that the yarn end release device ( 31 ) movably mounted tuyeres ( 32 ), and in that a control device ( 39 ) is present, the movement of the tuyeres ( 32 ) in response to expiration pulse parameters. Device according to claim 1, characterized in that the movement of the blowing nozzles ( 32 ) by a pneumatic cylinder ( 36 ), a valve ( 34 ), which determines the blowing air strength of the thread release device ( 31 ) controls, drives. Device according to claim 1, characterized in that the control device ( 39 ) due to pre-entered Ablaufspulparametern the movement of the nozzles ( 32 ) controls. Device according to claim 1, characterized in that the control device ( 39 ) due to a sensory detected shape of the delivery bobbin ( 9 ) the movement of the tuyeres ( 32 ) controls. Apparatus according to claim 1, characterized in that a stop ( 49 ) is present, the extension of the pneumatic cylinder ( 36 ) limited.

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