WO2018036916A1

WO2018036916A1 - Method for controlling a winding machine, and winding machine

Info

Publication number: WO2018036916A1
Application number: PCT/EP2017/070908
Authority: WO
Inventors: Rainald Voss; Markus Stammen; Roland Oesterwind
Original assignee: Oerlikon Textile Gmbh & Co. Kg
Priority date: 2016-08-23
Filing date: 2017-08-18
Publication date: 2018-03-01
Also published as: CN109641713A; DE102016010243A1; DE112017004211A5; CN109641713B

Abstract

The invention relates to a method for controlling a winding machine comprising two winding spindles (3.1, 3.2) which are held on a rotatable winding revolver (2) in an overhanging manner and to a winding machine. The winding spindles (3.1, 3.2) are held in an alternating manner in an operating region for winding a thread (9) into a coil (10) and in a changing region for removing the completely wound coil (10). The newly wound coil (10) is shielded from the coil (10) held in the changing region by a shielding device (14) which has a shielding means (15) and an actuator (16). The shielding means (15) is positioned between the winding spindles (3.1, 3.2) for shielding purposes. The aim of the invention is to obtain a free space which is as large as possible for winding the coils (10) during the changing phase. This is achieved in that an external diameter of the coil (10) to be changed is detected prior to activating the actuator (16). The external diameter of the coil (10) is assigned one of multiple final positions of the shielding means (15) such that the actuator (16) guides the shielding means (15) into the respective provided final position. For this purpose, a shield control unit (17) is provided which is connected to the actuator (16) of the shielding device and to a winding control unit (12) and/or a sensor (23) for detecting an external diameter of the coil (10) in the changing region. The adjustable final positions of the shielding means (15) are stored in a data storage unit (17.1) of the shield control unit (17).

Description

Method for controlling a winding machine and winding machine

The invention relates to a method for controlling a winding machine according to the preamble of claim 1 and a winding machine according to the preamble of claim 7.

For winding synthetic threads, winding machines are usually used, which allow a continuous winding of the threads into coils. For this purpose, the winding machines on two winding spindles, which are held on a rotatably mounted Spulrevolver and thus alternately held in an operating range for winding at least one thread and in a change region for removing the finished wound coils. Thus, one or more threads, for example, can be continuously taken up in a melt spinning plant and wound into coils. The winding spindles are preferably held cantilevered on the spool turret, so that the finished wound spool is detachable at a free end of the winding spindle. The spindle change between the operating range and the change range as well as the decrease of the coil must be possible in short times, since due to the limited distance between the winding spindles a collision between the newly wound coil and held in the changeover area ready for removal coil must be prevented. In addition, it must be ensured that a thread end held in the area of change on the bobbin does not reach the operating area of the newly wound bobbin. In that regard, it is known to guide a shielding between the winding spindle during the exchange phase. Such a winding machine is known for example from DE 100 16 161 AI. The known winding machine has a shielding device with a shielding and an actuator. The shielding means can be guided between a rest position and an operating position by the actuator. In the operating position, the shielding means projects into a region between the winding spindle and shields the coils held in the changing region on the winding spindle from the coils wound in the operating region. By the shielding a free space in the vicinity of the winding spindle in the operating range for receiving the newly wound coils is now determined. In that regard, a change of the coils in the change region must be performed as quickly as possible in order to avoid any collision of the wound coils with the shielding.

It is an object of the invention to develop a method for controlling such a winding machine and a generic winding machine in such a way that during a change phase maximum possible utilization of the space available by the shielding means for winding the coil on the winding spindle held in the operating range possible is.

This object is achieved according to the invention for the method for controlling a dishwashing machine in that before activation of the actuator, an outer diameter of the coil to be changed is detected, that the outer diameter of the coil is assigned in the change region one of several end positions of the shielding and that the actuator the shielding leads into the respective end position.

The object is achieved for the winding machine according to the invention in that the actuator is connected to a Abschirmsteuereinheit that the Abschirmsteuereinheit connected to a winding control unit and / or a sensor for detecting an outer diameter of the coil in the change region and that the shield control unit has a memory for accommodating a plurality of end positions of the shielding means.

Advantageous developments of the invention are defined by the features and feature combinations of the respective subclaims.

The invention is characterized in that the distance which is established between the winding spindles or between the spools can be utilized substantially completely in order to wind new spools during the changeover phase. The invention is based on the recognition that in practice different end coils are wound with a different maximum outer diameter. Likewise, conditions occur in which due to yarn breakage not yet wound with a desired final diameter coils must be changed prematurely. In that regard, the position of the shielding means can each be adapted to the coils held in the changeover region. The range of the end positions is determined by a maximum wound coil diameter and a minimum occurring coil diameter of the coil held in the change region. In order to determine the outer diameter of the coils held in the changeover region, the method variant has proven particularly useful, in which the outer diameter of the coil is determined directly at the end of a winding cycle before reaching the change region from a plurality of winding parameters. Thus, it is customary to regulate the spindle speed of the winding spindle as a function of a rotational speed of the pressure roller in such a way that the winding speed remains constant during the entire winding cycle. Alone from this relationship can already determine an outer diameter of the coil. In that regard, the outer diameter of the coil can be determined at the end of the winding cycle and transmitted to the shielding without additional funds. Alternatively, however, it is also possible to detect the outer diameter of the coil when reaching the change region by a sensor. Thus, distance sensors can be arranged in the change region, which directly detect the coil diameter held on the winding spindle.

The positioning of the shielding means in one of the end positions can be advantageously set either directly by the actuator in several stages or steplessly. Alternatively, however, it is also possible to determine the end positions of the shielding means by means of an adjustable stop, which cooperates with the shielding means.

For the operation of the winding machine, the method variant is particularly advantageous in which a parking time, while a turret drive holds the Spulrevolver with the winding spindle in the change region, is determined in dependence on the respective end position of the shielding. Thus, the parking times and thus the change times depending on the outer diameter of the coils can be determined. A large outer diameter of the coils in the change region thus requires a relatively short changeover time, whereas a small outer diameter of the coils in the change region allows a relatively long changeover time.

For positioning the shielding means, the winding machine according to the invention can be formed in at least two variants. In a first variant, the actuator of the shielding can be used directly to adjust the respective end position of the shielding continuously and / or stepwise. For this purpose, the actuator is preferably formed by a linear drive. Alternatively, however, it is also possible to combine the shielding device for adjusting the respective end position of the shielding means with an adjustable stop device. For this purpose, it is necessary for the screening control unit to be coupled to the stop device in order to guide an adjustable stop into a desired stop position.

The link between a parking time, or the duration of a bobbin change can be advantageously achieved in the winding machine according to the invention in that the Abschirmsteuereinheit is connected to a control unit of a revolver drive of the winding turret. Thus, the shielding can be linked directly to the control of the winding turret.

The inventive method for controlling a winding machine will be explained in more detail with reference to several embodiments of the inventive dishwasher with reference to the accompanying figures.

They show:

Fig. 1 shows schematically a side view of a first embodiment of the winding machine according to the invention

Fig. 2.1

and

Fig. 2.2 shows schematically a front view of the embodiment of Fig. 1 in several operating situations

Fig. 3.1

and

Fig. 3.2 shows schematically a front view of another embodiment of the winding machine according to the invention in several operating situations 1, 2.1 and 2.2, an embodiment of the winding machine according to the invention is shown in several views. FIG. 1 shows a side view and in FIGS. 2.1 and 2.2 a front view of the exemplary embodiment in several operating situations. The embodiment of the winding machine according to the invention is shown in FIGS. 1 and 2.1 respectively in an operating situation in which a group of yarns of several threads are wound simultaneously to form coils and in which several finished wound coils are held for removal by a winding spindle. The yarn sheet is preferably spun and drawn directly in a spinning device upstream of the winding machine. In principle, however, it should be mentioned at this point that the winding machine according to the invention is not limited to use in melt spinning processes, but can also be used in processes where, for example, only one thread is wound into a bobbin. In that regard, the number of threads wound on the spindles is exemplary. The winding machine according to the invention is thus suitable for winding only a thread or a group of threads into coils.

The following description of the embodiment of Fig. 1 and Figs. 2.1 and 2.2 refers to all figures, insofar as no explicit reference is made to one of the figures.

The embodiment has a machine frame 1, in which a Spulrevolver 2 is rotatably mounted. The rotary movement of the winding turret 2 in the machine frame 1 is carried out by a turret drive 5. At the winding turret 2 two offset by 180 ° to each other arranged winding spindles 3.1 and 3.2 are cantilevered. The winding spindles 3.1 and 3.2 are each assigned two spindle drives 4.1 and 4.2. By means of the revolver drive 5, the winding turret 2 can be moved with the winding spindles 3.1 and 3.2. This is how the winding spindles can be handled 3.1 and 3.2 alternately lead to a change area and an operating area.

The spindle drives 4.1 and 4.2 and the turret drive 5 are connected to a drive control unit 19, which controls the respective control devices of the drives 4.1,

4.2 and 5 have. The drive control unit 19 is coupled to a winding control unit 12 which monitors and controls the operations in the winding machine. The winding spindles 3.1 and 3.2 extend along the winding frame arranged next to one another on the machine frame 1 and each have a winding tube 11 per winding position. The exemplary embodiment is carried out here by way of example with a total of five winding points, so that here five threads 9 are wound parallel to coils 10.

The winding stations formed in the winding machine have a head thread guide 8 for separating and guiding the threads 9 in each case in an inlet region. For laying the threads 9 on the circumference of the coils 10, a traversing device 7 and a pressure roller 6 are provided, which extends over the length of the winding spindles 3.1 and 3.2. The traversing device 7 has for each winding point in each case a driven traversing yarn guide, which leads back and forth the thread, so that sets a cross winding on the circumference of the coil 10. In the operating situation shown in Fig. 1 and 2.1, a Spulspinde lwechsel was just performed so that the winding spindle 3.1 is held in the operating area for winding the threads 9 and wherein the winding spindle 3.2 is guided with the finished wound coils 10 in the change area. Within a so-called parking time, when the coils 10 are wound on the winding spindle 3.1, the deflection movement for increasing the coil diameter is carried out by the movable pressure roller 6. The pressure roller 6 is for this purpose preferably held on a movable rocker or a carriage. During the parking time, the winding spindle 3.2 held in the changeover area remains in a change position, in which a decrease of the finished wound coils 10 can be carried out. A movement of the winding turret 2 does not take place during the parking time.

In order to prevent in particular the wrapping of loose thread ends or lint in the newly wound coils, a shielding device 14 is arranged on the machine frame 1. In this exemplary embodiment, the shielding device 14 has a movable shielding means 15 and an actuating drive 16. The shielding means 15 is formed by a pivotally mounted pivot arm 15.2 and a held at the free end of the pivot arm 15.2 cover plate 15.1. The cover plate 15.1 extends substantially over the entire winding area of the winding stations and covers in an operating position held on the winding spindle 3.2 in the changing range coils 10. The shielding means 15 I can do this by the actuator 16 between a rest position and an operating position and forth. In Fig. 2.1, the rest position of the shielding 15 is shown in dashed lines.

The actuator 16 is formed in this embodiment by a linear drive in the form of a piston-cylinder unit 16.1. The piston-cylinder unit 16.1 engages the pivot arm 15.2 and guides it back and forth between the rest position and the operating position. The shielding means 15 and the actuator 16 are arranged laterally next to the winding turret 2 on the machine frame 1. On the opposite side of the winding turret 2, a stop device 18 is provided which has a stop 18.1. The Impact 18.1 cooperates with the shielding 15 in its operating position. The stopper 18.1 is made adjustable by means of an adjusting drive 18.2 in its stop position. For controlling the adjusting drive 18.2 and for controlling the actuator 16, a screening control unit 17 is provided. The shield control unit 17 is connected to the winding control unit 12. Within the shield control unit 17, a data memory 17.1 is provided in which predetermined settings of the stop device 18 are stored. Thus, the stop 18.1 of the stop device 18 can lead to different stop positions. Thus, it is possible to position the shielding means 15 in an operating position with a plurality of end positions. Depending on the respective stop position of the stop 18.1 take the shielding in its operating position different end positions between the winding spindles.

In order to explain the function for shielding the coils in the change region, reference is additionally made in addition to FIG. 2.1 to FIG. 2.2. FIG. 2.2 shows the exemplary embodiment in a new operating state, in which the coils held in the change region have a substantially smaller outer diameter.

Before the shielding means 15 is led out of the rest position, the stop device 18 is initially activated. For this purpose, the shielding control unit 17 transmits information about the wound outer diameter of the coils 10 on the winding spindle 3.2 via the winding control unit 12. The outer diameter of the coils 10 on the winding spindle 3.2 are calculated shortly before the spindle change from the winding parameters and transmitted to the Abschirmsteuereinheit 17 at the end of the winding cycle. Within the shield control unit 17, the respective value of the outer diameter becomes an end position of the Shielding assigned to create the largest possible space in the vicinity of the winding spindle 3.1. Thus, from the stored settings for controlling the stop device 28, a stop position of the stop 18.1 can be determined and predefined accordingly. The stop 18.1 is guided via the adjusting drive 18.2 to the predetermined by the Abschirmsteuereinheit 17 stop position. In parallel, shielding means 15 can be guided by the actuator into the operating position, wherein the end position of the shielding means is determined by the stop 18.1. This state is shown in Fig. 2.1 for a relatively large outer diameter of the coil 10 on the circumference of the winding spindle 3.2 in the change region.

In the case that the outer diameter of the coil 10 in the changing region is smaller, a changed end position of the shielding means is set by the shielding control unit 17. Thus, the stop 18.1 is guided by the adjusting drive 18.2 into a changed stop position, so that the shielding means 15 assumes a changed end position in its operating position. This allows for a small outer diameter of the coil, the free space in the vicinity of the winding spindle 3.1 in the operating range significantly expand. The newly wound on the winding spindle 3.1 in the operating range coils 10 receive more space to allow an increase in the coil diameter. This situation is shown in FIG. 2.2. This advantage can be used in particular in such embodiments of the winding machine, in which the pressure roller is guided on a carriage. In the embodiment, the shielding means 15 cooperates with a stop. Basically, however, it is also possible to position the shielding means 15 directly without a stop by the actuator 16. For example, the actuator 16 could be made by a spindle drive, in which the spindle is driven by a stepping motor. such Stepper motor-controlled drives allow accurate positioning of the shielding means 15. Thus, the embodiment shown in FIGS. 1 and 2.1 could also be embodied without a stop device 18. The respective desired end position, which is determined by the shielding control unit 17 as a function of the respective outer diameter of the coil in the change region, is used directly to control the actuator 16. The shielding means 15 is guided to the desired end position.

The operation of the winding machine via an operating panel 13. Thus, the bobbin change and the activation of the shielding device 14 via the control panel 13 can be controlled. Accordingly, the shield control unit 17 is connected to the operation panel 13.

Depending on the wound in practice outside diameter of the coils, the end positions of the shielding 15 can be adjusted both in stages and continuously. Especially with greatly varying outer diameters of the coils stepless adjustment of the end positions is preferably carried out. In the event that only a small and clearly determinable outer diameter of the coils can occur during operation, individual end positions can also be predetermined in stages. For example, areas of an end position or a plurality of values of an end position could be stored in the data memory 17.1 of the shield control unit 17.

Since the free space available in the change phase around the winding spindle 3.1, on which the coils 10 are wound in the operating region, has a direct influence on the length of the parking time, the shielding control unit 17 is preferably also coupled to the drive control unit 19, as shown in FIG. 1 is shown. Thus, the information of the end position of the shielding means 15 be used directly to influence the control of the winding turret 2 and thus the length of the parking time.

In the aforementioned embodiment, the shielding device is associated with the winding spindle, which is located in the change region. Basically, however, it is also possible to assign the shielding of the winding spindle in the operating range. Such an embodiment is shown in Figs. 3.1 and 3.2. FIGS. 3.1 and 3.2 show the exemplary embodiment in a front view in different operating situations. Here, the structure of the embodiment is identical to the aforementioned embodiment and differs only in the formation of the shielding device 14. In that regard, reference is made to the above description and explained at this point only the differences. In the embodiment shown in FIGS. 3.1 and 3.2, the shielding device 14 is arranged in the upper region of the machine frame 1 laterally next to the winding turret, wherein a movable shielding 15 of the winding spindle 3.1 is assigned in the operating range. The shielding means 15 is also formed in this embodiment by a cover plate 15.1 and a pivot arm 15.2. The cover plate 15.1 extends over the entire coil width of the winding spindle 3.1 held on the coil 10. The pivot arm 15.2 is rotatably mounted on a carriage 21 and can be guided via a pivot drive 20 between a rest position in an operating position. In the operating position, the cover plate 15.1 protrudes between the winding spindles 3.1 and 3.2. The rest position of the shielding 15 is shown in phantom in Fig. 3.1.

The carriage 21 is guided in a vertical slide guide 22 and positioned via an actuator 16. The actuator 16 and the pivot drive 20 are connected to the shield control unit 17. In the lower region of the machine frame 1, a sensor for detecting an outer diameter de coils 10 is arranged in the change region. The sensor 23 is coupled to the shield control unit 17.

In the embodiment shown in Fig. 3.1 and 3.2, the outer diameter of one of the coils 10 is detected on the winding spindle 3.2 in the change region by the sensor 23 after reaching the change position. Depending on the outer diameter of the coils 10, an end position of the shielding means is determined in the shield control unit 17. For shielding the pivot drive 20 is first activated by the Abschirmsteuereinheit 17, which guides the shielding 15 from the rest position to an operating position. In order to set the end position of the shielding in the operating position, the actuator 16 is now activated, which leads the carriage 21 with the shielding in an end position. In FIGS. 3.1 and 3.2, two different end positions of the shielding means 15 are shown with different coil diameters of the coils 10 in the change region. In that regard, different free spaces for winding the coils 10 in the operating range and different parking times for changing the coils 10 in the change area can be realized.

Claims

claims

A method for controlling a winding machine with two winding spindles projecting on a rotatable spool turret, which are held alternately in an operating area for winding a thread into a spool and in a changing area for removing the spool, wherein a shielding means for shielding the spool in the area of change between the spools Spool spindles is positioned by an actuator, characterized in that before activation of the actuator, an outer diameter of the coil to be changed is detected, that the outer diameter of the coil in the change region is assigned one of a plurality of end positions of the shielding and that the actuator, the shielding in the respective end position leads.

A method according to claim 1, characterized in that the outer diameter of the coil is detected directly at the end of a winding cycle before reaching the change region of several winding parameters.

A method according to claim 1, characterized in that the outer diameter of the coil when reaching the change region is detected by a sensor.

Method according to one of claims 1 to 3, characterized in that the end positions of the shielding means by the actuator in several stages or continuously adjustable.

Method according to one of claims 1 to 3, characterized in that the end positions of the shielding means by a with the shielding means cooperating stop in several stages or continuously adjustable.

Method according to one of claims 1 to 5, characterized in that a parking time, while a turret drive holds the Spulrevolver with the winding spindle in the change region, is determined in dependence on the respective end position of the shielding.

Winding machine for continuously winding a thread (9) to form coils (10) with a rotatably mounted winding turret (2) carrying two cantilevered winding spindles (3.1, 3.2), wherein the winding spindles (3.1, 3.2) by the Spulrevolver (2) alternately in an operating area for winding the thread (9) to one of the coils (10) and in a changing area for removing one of the coils (10) are feasible, and with a shielding device (14) for shielding the coil (10) in the change region, wherein the Shielding device (14) has a shielding means (15) and an actuator (16) for positioning the shielding means (15) between the winding spindles (3.1, 3.2),

characterized in that the actuator (16) is connected to a Abschirmsteuereinheit (17) that the Abschirmsteuereinheit (17) connected to a winder control unit (12) and / or a sensor (23) for detecting an outer diameter of the coil (10) in the change region and that the shield control unit (17) has a data memory (17.1) for receiving a plurality of end positions of the shielding means (15).

Winding machine according to claim 7, characterized in that the actuator (16) of the shielding means (15) by a linear motor (16.1) is formed, which adjusts the respective end positions of the shielding (15) continuously and / or stepwise.

9. Winding machine according to claim 7, characterized in that the shielding device (14) for adjusting the respective end position of the shielding means (15) is associated with an adjustable stop means (18) which is connected to the Abschirmsteuereinheit (17).

10. Winding machine according to one of claims 7 to 9, characterized in that the Abschirmsteuereinheit (17) with a control device (19) of a turret drive (5) of the winding turret (2) is connected.