CN109641713B

CN109641713B - Control method of winding machine and winding machine

Info

Publication number: CN109641713B
Application number: CN201780051207.3A
Authority: CN
Inventors: R·沃斯; M·施塔门; R·奥斯特温德
Original assignee: Oerlikon Textile GmbH and Co KG
Current assignee: Oerlikon Textile GmbH and Co KG
Priority date: 2016-08-23
Filing date: 2017-08-18
Publication date: 2021-02-02
Anticipated expiration: 2037-08-18
Also published as: DE102016010243A1; WO2018036916A1; DE112017004211A5; CN109641713A

Abstract

The invention relates to a method for controlling a winding machine having two winding spindles (3.1,3.2) held in a projecting manner on a rotatable winding turret (2), and to a winding machine. The winding spindles (3.1,3.2) are alternately held in a working area for winding the yarn (9) to form a bobbin (10) and a replacement area for removing the completely wound bobbin (10). The newly wound bobbin (10) is shielded from the bobbin (10) held in the replacement region by a shielding device (14), the shielding device (14) having a shielding part (15) and an actuator drive (16). The shielding part (15) is positioned between the winding spindles (3.1,3.2) for shielding. In order to maintain as large a free space as possible for the winding bobbin (10) during the changing phase, the outer diameter of the bobbin to be changed is detected before the actuator drive is activated. The outer diameter of the bobbin corresponds to one of a plurality of end positions of the shutter element (15), so that the actuator drive (16) guides the shutter element (15) into the respective end position. For this purpose, a shielding control unit (17) is provided, which is connected to an actuator drive (16) and a winding control unit (12) of the shielding device and/or a sensor (23) for detecting the outer diameter of the bobbin (10) in the replacement region. The settable plurality of final positions of the masking element (15) is stored in a data memory (17.1) of the masking control unit (17).

Description

Control method of winding machine and winding machine

Technical Field

The invention relates to a winder control method and a winder.

Background

Winding machines which allow continuous winding of the yarn to form bobbins are generally used for winding synthetic yarns. For this purpose, the winding machine has two winding spindles which are held on a rotatably mounted winding turret and are therefore held alternately in a working area for winding at least one yarn and in a changing area for removing the wound bobbins. One or more yarns, such as in a melt spinning apparatus, may then be continuously received and wound to form a package. The winding spindle is preferably held projecting on the winding turret in such a way that the wound bobbin can be removed at the free end of the winding spindle. In this case, spindle changes and bobbin removals between the work area and the change area must be carried out as briefly as possible, since conflicts between newly wound bobbins and bobbins which are ready for removal in the change area, due to the limited space between the winding spindles, must be prevented. It must also be ensured that the thread end on the bobbin held in the change zone does not reach the working zone of the newly wound bobbin. For this purpose, it is known to guide the screening elements between the winding spindles in the exchange phase. Such a winding machine is known, for example, from DE10016161a 1.

Known winding machines have a screening device with a screening member and an actuator drive. The screening element is guided between a rest position and a working position by means of an actuator drive. The shielding element in the operating position projects into the region between the winding spindles and shields the bobbins held on the winding spindles in the exchange region from the wound bobbins in the operating region. Because of the shielding element, a free space is now defined around the winding spindle in the working area for receiving the newly wound bobbin. For this reason, the bobbin change in the change area must be carried out as quickly as possible to avoid any conflict between the wound bobbin and the shielding member.

Disclosure of Invention

The object of the invention is to improve the method for controlling such a winding machine and the winding machine of the generic type in such a way that the free space available through the shielding element can be utilized to the greatest extent possible in the exchange phase for winding the bobbins on the winding spindles held in the working area.

According to the invention, this object is achieved in connection with a method for controlling a winding machine in such a way that the outer diameter of the bobbin to be replaced is detected before the actuator drive is activated, the outer diameter of the bobbin in the replacement region corresponds to one of a plurality of final positions of the shield element, and the actuator drive guides the shield element into the respective final position.

According to the invention, this object is achieved in connection with a winding machine in that the actuator drive is connected to a masking control unit which is connected to the winding control unit and/or to a sensor for detecting the outer diameter of the bobbin in the exchange region and which has a memory for receiving a plurality of final positions of the masking member.

The invention is characterized in that the space created between the winding spindles or between the bobbins, respectively, can be used in a substantially complete manner for winding a new bobbin during the change phase. The invention is based on the idea that in practice different final bobbins with different maximum outer diameters are wound. There is also the situation that a bobbin which has not yet had the desired final diameter due to a yarn break must be replaced in advance. In this connection, the position of the screening element can be adapted to the cartridge held in the replacement region. The region of the final position is determined by the maximum winding bobbin diameter and the minimum generated bobbin diameter of the bobbin held in the change region.

In order to determine the outer diameter of the bobbin held in the change region, a method variant is particularly successful in which the outer diameter of the bobbin at the end of the winding stroke before the change region is reached is ascertained from a plurality of winding parameters. The spindle rotational speed of the winding spindle is therefore usually adjusted as a function of the rotational speed of the contact pressure roller, so that the winding speed remains constant throughout the winding stroke. The outer diameter of the bobbin can be ascertained only from this relationship. In this connection, the bobbin outer diameter can be determined at the end of the winding stroke without additional measures and can be transferred to the masking device.

Alternatively, however, the outer diameter of the bobbin when the change area is reached can also be detected by a sensor. A distance sensor which directly detects the diameter of the bobbins held on the winding spindles can then be arranged in the replacement region.

The positioning of the screening element in one of said end positions can advantageously be set in a multistage manner or in a stepless manner directly by the actuator drive. But alternatively the final position of the screening element may be determined by means of an adjustable stop interacting with the screening element.

For the operation of the winding machine, a method variant is particularly advantageous in which the parking period during which the turret drive holds the winding turret with the winding spindles in the exchange area is determined as a function of the respective final position of the masking member. The parking period and thus the change-over time can then be determined as a function of the outer diameter of the bobbin. Thus, a large outer diameter of the bobbin in the exchange region requires a relatively short exchange time, while a small outer diameter of the bobbin in the exchange region permits a relatively long exchange time.

The winder of the present invention can be implemented in at least two variants in order to position the screening element. In a first variant, the actuator drive of the shutter member can be used directly for setting the respective final position of the shutter member in a stepless and/or stepped manner. For this purpose, the actuator drive is preferably formed by a linear drive.

Alternatively, however, the screening arrangement may also be combined with adjustable stop means for setting the respective final position of the screening element. For this purpose, it is necessary to connect the shade control unit to the stop device to guide the adjustable stop to the desired stop position.

The association between the parking period and the bobbin change period in the case of the winding machine according to the invention can advantageously be obtained in that the masking control unit is connected to the control device of the turntable drive of the winding turntable. The shading function can then be directly linked to the control of the winding turret.

Drawings

The winder control method according to the invention will be explained in more detail below by means of several embodiments of the winder of the invention and with reference to the accompanying drawings, in which:

figure 1 schematically shows a side view of a first embodiment of a winding machine according to the invention;

fig. 2.1 and 2.2 schematically show a front view of the embodiment of fig. 1 in a number of operating conditions;

fig. 3.1 and 3.2 schematically show a front view of another embodiment of a winding machine according to the invention in a number of operating conditions.

Detailed Description

An embodiment of the inventive winder is shown in many views in fig. 1, 2.1 and 2.2. Fig. 1 shows a side view of the exemplary embodiment, and fig. 2.1 and 2.2 show a front view of the exemplary embodiment in several operating states. The exemplary embodiments of the winding machine according to the invention in fig. 1 and 2.1 are shown in an operating state in which groups of threads are wound simultaneously to form bobbins and a plurality of wound bobbins remain ready to be removed from the winding spindle. The yarn group is preferably directly spun and drawn in a spinning device provided upstream of the winder. It should be mentioned here, however, that the winding machine according to the invention is not limited in principle to use in a melt spinning process, but can also be used, for example, in a process in which only one yarn is wound to form a package. In this regard, the number of yarns wound on the spindle is exemplary. The winding machine of the invention is then suitable for winding only one yarn or a group of yarns to form a package.

The following description of the embodiments of fig. 1 and 2.1 and 2.2 refers to all the figures, unless any of them is explicitly mentioned.

This embodiment has a frame 1 in which a winding turret 2 is rotatably mounted. The rotary movement of the winding turret 2 in the machine frame 1 is performed by a turret drive 5. The two winding spindles 3.1,3.2 are held projecting on the winding turret 2 and are offset by 180 ° with respect to one another. The winding spindles 3.1,3.2 correspond to spindle drives 4.1, 4.2, respectively. The winding turret 2 with the winding spindles 3.1,3.2 is moved by a turret drive 5. The winding spindles 3.1 and 3.2 can thus be guided alternately to the exchange area and the working area.

The spindle drives 4.1, 4.2 and the turntable drive 5 are connected to a drive control unit 19 which has corresponding controls for the drives 4.1, 4.2 and 5. The drive control unit 19 is connected to the winding control unit 12, which monitors and controls the working program in the winder.

The winding spindles 3.1,3.2 extend along winding positions provided on the machine frame 1 and each have a winding tube 11. The exemplary embodiment described here is realized by way of example with a total of five winding positions, so that five threads 9 are wound in parallel here to form a bobbin 10.

The winding positions provided in the winder for separating and guiding the yarn 9 each have a top thread guide 8 in the feed region. The traversing gear 7 and the contact roller 6 extending over the length of the winding spindles 3.1,3.2 are provided for depositing the thread 9 on the circumferential surface of the bobbin 10. The traversing device 7 has for each winding position a driven traversing thread guide which guides the thread back and forth so that a cross-winding pattern occurs on the circumferential surface of the bobbin 10.

In the operating situation shown in fig. 1 and 2.1, the winding spindle change has been completed, so that the winding spindle 3.1 is held in the operating region for winding the thread 9, wherein the winding spindle 3.2 with the wound bobbin 10 is guided to the change region.

During the so-called parking phase, a compensating movement for increasing the bobbin diameter is carried out in the winding bobbin 10 on the winding spindle 3.1 by means of the movable contact pressure roller 6. The contact pressure roller 6 is preferably held for this purpose on a movable pivoting arm or slide. The winding spindle 3.2 held in the change-over region remains in the slipping position during the parking phase, in which the removal of the wound bobbin 10 can be carried out. No movement of the winding turret 2 takes place during the parking period.

In order to prevent the trapping of loose yarn ends or fly, in particular when newly wound into bobbins, a screening device 14 is provided on the machine frame 1. The screening device 14 in this embodiment has a movable screening member 15 and an actuator drive 16. The screening member 15 is formed by a pivotably mounted pivot arm 15.2 and a cover plate 15.1 held on the free end of the pivot arm 15.2. The cover 15.1 extends substantially over the entire winding region of the winding position and covers the bobbins 10 held on the winding spindles 3.2 in the change region in the operating position. For this purpose, the screening element 15 can be guided in a reciprocating manner between a rest position and a working position by means of an actuator drive 16. The rest position of the shield element 15 is indicated in fig. 2.1 by a dashed line.

The actuator drive 16 in this embodiment is formed by a linear drive in the form of a piston-cylinder unit 16.1. The piston-cylinder unit 16.1 engages on the pivot arm 15.2 and guides the pivot arm back and forth between a rest position and a working position. The shutter member 15 and the actuator drive device 16 are arranged laterally beside the winding turret 2 on the frame 1. A stop device 18 with a stop 18.1 is arranged on the opposite side of the winding turret 2. The stop 18.1 interacts with the screening element 15 in its active position. The stop 18.1 is realized in such a way that it can be adjusted in terms of its stop position by means of the adjusting drive 18.2.

A shading control unit 17 is provided for controlling the adjustment drive 18.2 and the actuator drive 16. The shielding control unit 17 is connected to the winding control unit 12. A data memory 17.1 storing predetermined set values for the detent means 18 is provided in the shade control unit 17. The stop 18.1 of the stop device 18 can then be guided into different stop positions. The screening element 15 can then be brought into a working position with a plurality of final positions. The screening element in its working position occupies different final positions between the winding positions, depending on the respective stop position of the stop 18.1.

To explain the function of shielding the bobbin in the exchange area, reference is also made to fig. 2.2 in addition to fig. 2.1. The exemplary embodiment in fig. 2.2 is shown in a new operating state, in which the cartridge held in the exchange area has a significantly smaller outer diameter.

The activation of the stop means 18 first takes place before the screening element 15 is guided out of the rest position. For this purpose, the masking control unit 17 is supplied with information about the outer diameter of the bobbins 10 on the winding spindles 3.2 via the winding control unit 12. The outer diameter of the bobbin 10 on the winding spindle 3.2 is calculated from the winding parameters shortly before the spindle change and is transmitted to the masking control unit 17 at the end of the winding stroke. The respective outer diameter value is assigned to the final position of the masking member in the masking control unit 17 in order to obtain as large a free space as possible around the winding spindle 3.1. The stopping position of the stopping element 18.1 can then be determined from the stored set values for controlling the stopping device 18 and predetermined accordingly. The stop 18.1 is guided by the adjusting drive 18.2 to a stop position predetermined by the shading control unit 17. In parallel therewith, the screening element 15 can be guided by the actuator drive into the operating position, wherein its final position is determined by the stop 18.1. The state of fig. 2.1 is shown for a relatively large outer diameter of the bobbins 10 on the circumferential surface of the winding spindle 3.2 in the exchange region.

In the case of a small outer diameter of the bobbin 10 in the exchange region, the changed final position of the shielding component is predetermined by the shielding control unit 17. The stop 18.1 is then guided by means of the adjusting drive 18.2 into the changed stop position, so that the screening element 15 in its operating position assumes the changed final position. The free space around the winding spindle 3.1 in the working area can then be enlarged considerably with a small bobbin outer diameter. The newly wound bobbin 10 on the winding spindle 3.1 located in the working area has more free space to allow the diameter of the bobbin to increase. This situation is shown in fig. 2.2. This advantage can be used in particular in the case of embodiments of the winder in which the contact pressure roller is guided on a carriage.

The screening element 15 in the case of the embodiment interacts with the stop. In principle, however, it is also possible to position the screening element 15 directly by means of the actuator drive 16 without a stop. The actuator drive 16 can then be implemented, for example, by a spindle drive, in which the spindle is driven by a stepping motor. Such a stepping motor control type driving device allows accurate positioning of the shielding member 15. The embodiment shown in fig. 1 and 2.1 can then also be realized without the stop device 18. The respective desired end position determined by the shading control unit 17 as a function of the respective outer diameter of the bobbins in the exchange region is used directly for controlling the actuator drive 16. The screening element 15 is guided to the desired final position.

The operation of the winder is performed by an operator panel 13. The bobbin exchange and also the activation of the screening device 14 can then be activated by means of the operator panel 13. The shade control unit 17 is thus connected to the operator panel 13.

The final position of the shielding element 15 relative to the outer diameter of the bobbin actually wound can be set in a stepped manner and also in a stepless manner. The stepless setting of the final position is preferably effected in particular with significantly varying outer diameters of the bobbins. The individual end positions can also be predetermined in stages in the event that only a few clearly determinable outer diameters of the bobbins are possible during operation. The range of final positions or a plurality of final position values may then be stored in the data memory 17.1 of the shading control unit 17.

Since the free space available around the winding spindle 3.1 on which the bobbin 10 is wound in the working area during the change-over phase directly influences the length of the parking period, the masking control unit 17 is preferably also connected to the drive control unit 19, as shown in fig. 1. The information about the final position of the shielding member 15 can then be used directly to influence the control of the winding turntable 2 and thus the length of the parking period.

The screening device in the case of the above-described embodiments is assigned to the winding spindles in the replacement region. However, it is also possible in principle to assign the screening device to a winding spindle in the working area. An embodiment of this type is shown in fig. 3.1 and 3.2. Fig. 3.1 and 3.2 show the embodiment in different operating conditions in a front view. The structure of the embodiment herein is the same as that of the previous embodiment, differing only in the configuration of the shielding device 14. Reference is made to the above description at this point and only the differences are explained here.

The screening device 14 in the case of the embodiment shown in fig. 3.1 and 3.2 is arranged in the upper region of the machine frame 1 so as to be laterally beside the winding turret, wherein a movable screening element 15 is assigned to the winding spindle 3.1 in the working region. The screening element 15 in this embodiment is also formed by a cover 15.1 and a pivot arm 15.2. The cover 15.1 extends over the entire bobbin width of the bobbin 10 held on the winding spindle 3.1. The pivot arm 15.2 is mounted rotatably on a slide 21 and can be guided from a rest position into a working position by means of a pivot drive 20. The cover 15.1 in the operating position projects between the winding spindles 3.1 and 3.2. The rest position of the shield element 15 is indicated in fig. 3.1 by a dashed line.

The carriage 21 is guided in a vertical carriage guide 22 and positioned by the actuator drive 16. The actuator drive device 16 and the pivot drive device 20 are connected to the shade control unit 17.

A sensor for detecting the outer diameter of the bobbin 10 in the exchange area is arranged in the lower region of the machine frame 1. The sensor 23 is connected to the shading control unit 17.

In the exemplary embodiment shown in fig. 3.1 and 3.2, the outer diameter of one of the bobbins 10 on the winding spindle 3.2 in the change region is detected by a sensor 23 when the change position is reached. The final position of the masking members is determined in the masking control unit 17 in dependence on the outer diameter of the bobbin 10. For screening, the pivoting drive 20 is first activated by the screening control unit 17, said pivoting drive 20 guiding the screening element 15 from the rest position to the working position. The actuator drive 16 guiding the carriage 21 with the screening member to the final position is now activated to set the final position of the screening member in the operative position. Two different end positions of the shielding element 15 in the case of different bobbin diameters of the bobbins 10 in the exchange region are shown in fig. 3.1 and 3.2. In this connection, different free spaces for winding the bobbin 10 in the working area and different parking periods for changing the bobbin 10 in the change area can be achieved.

Claims

1. A method for controlling a winding machine having two winding spindles which are held projecting on a rotatable winding turret and are alternately held in a working area for winding a thread to form a bobbin and a changing area for removing the bobbin, in the method, a shielding component for shielding a bobbin is positioned in a replacement area between the winding spindles through an actuator driving device, it is characterized in that the outer diameter of the bobbin to be replaced is detected before the actuator driving device is started, so that the outer diameter of the bobbin in the exchange region corresponds to one of a plurality of final positions of the shield member, and the actuator drive guides the shield member to the respective final position, wherein the final position of the screening member can be adjusted in a multistage manner or in a stepless manner by means of a stop interacting with the screening member.

2. A method as claimed in claim 1, characterized in that the outer diameter of the bobbin at the end of the winding stroke before reaching the change zone is detected from a plurality of winding parameters.

3. A method as claimed in claim 1, wherein the outer diameter of the bobbin on reaching the change zone is detected by a sensor.

4. A method according to any one of claims 1-3, c h a r a c t e r i z e d in that the final position of the screening member can be adjusted in a multistage manner or in a stepless manner by means of the actuator drive.

5. Method according to any one of claims 1 to 3, characterized in that the parking period when the winding turret with the winding spindles is held in the change zone by the turret drive is determined depending on the respective final position of the shutter member.

6. A winding machine for continuously winding a yarn (9) to form bobbins (10), having a rotatably mounted winding turret (2) supporting two projecting winding spindles (3.1,3.2), wherein the winding spindles (3.1,3.2) can be guided alternately by the winding turret (2) in a working area for winding the yarn (9) to form one of the bobbins (10) and in an exchange area for removing one of the bobbins (10), and having a shielding device (14) for shielding the bobbins (10) in the exchange area, wherein the shielding device (14) has a shielding part (15) and an actuator drive (16) for positioning the shielding part (15) between the winding spindles (3.1,3.2), characterized in that the actuator drive (16) is connected to a shielding control unit (17), and the masking control unit (17) is connected to a winding control unit (12) and/or a sensor (23) for detecting the outer diameter of the bobbin (10) in the change region, and the masking control unit (17) has a data memory (17.1) for receiving a plurality of final positions of the masking member (15), wherein the masking device (14) for setting the respective final position of the masking member (15) corresponds to an adjustable stop device (18) connected to the masking control unit (17).

7. Spooling machine as claimed in claim 6, characterized in that the actuator drive (16) of the screening element (15) is formed by a linear motor (16.1) which sets the respective final position of the screening element (15) in a multistage manner and/or in a stepless manner.

8. Spooling machine as claimed in claim 6 or 7, characterized in that the masking control unit (17) is connected to the control device (19) of the turntable drive (5) of the winding turntable (2).