JP2013529164A - Winding machine and method for monitoring the winding machine - Google Patents

Abstract

  The present invention relates to a winding machine for winding a plurality of yarns around a bobbin and a method for controlling and / or monitoring such a winding machine. The winding machine has two protruding bobbin spindles (3.1, 3.2) held on a rotatably supported bobbin revolver (1). The bobbin spindle is alternately guided to the winding area and the exchange area by a bobbin revolver, and the bobbin spindle cooperates with the pressing roller (6) in the winding area. This pressing roller is held by a movable roller support (20). A measuring device (11) is provided to monitor and control the vibration generated in the bobbin spindle. In the present invention, the above-described measuring apparatus has a fixed position sensor (11.1, 11.2), which is formed in one of a plurality of movable components. It cooperates with the contour (13). Here, the vibration of the component excited by the vibration of the bobbin spindle is measured as a change in the position of the component relative to the machine frame.

Description

  The invention relates to a winding machine for winding a thread onto a bobbin according to the superordinate concept of claim 1 and to a method for monitoring and / or controlling a winding machine according to the superordinate concept of claims 16 and 20.

  A winding machine of the form mentioned at the beginning and a method of the form mentioned at the beginning for controlling and monitoring the winding machine are known from WO 1996/033939.

  This known winding machine is used in a spinning machine for winding freshly spun synthetic yarn. Usually, a group of yarns are wound together on a bobbin in parallel after spinning and drawing. For this purpose, the winding machine has two protruding bobbin spindles which are offset from each other and held on one rotatable bobbin revolver. The bobbin spindle is alternately guided to the winding area and the exchange area by the bobbin revolver. In the bobbin spindle held in the winding area, the group of yarns are simultaneously wound around the bobbin in parallel. At this time, the bobbin spindle and the pressing roller in contact with the outer periphery of the bobbin to be wound cooperate with each other. The pressing roller is held by a movable roller support, and in this case, a moving motion for growing a plurality of bobbins is performed by the roller support. These bobbins are held side by side on the bobbin spindle. In such a melt spinning process, a high yarn traveling speed that can be as high as 6000 m / min is reached. Here, the bobbin spindle held in the winding region is driven at a rotational speed that produces a substantially constant peripheral speed of the bobbin and, in turn, a constant winding speed. When winding the yarn according to the diameter of the bobbin, the bobbin spindle is driven in a rotational speed region from about 2000 rotations / minute to about 30000 rotations / minute. At such high rotational speeds, a very slight unbalance phenomenon at the bobbin spindle leads to undesirable vibrations. In principle, it is known to dynamically balance the bobbin spindle in advance without the bobbin load described above, but this makes it possible for the bobbin Unpredictable faults in the structure cannot be detected.

  In order to detect vibrations occurring in the bobbin spindle during operation, the known winding machine has a measuring device. This measuring device has one acceleration sensor for each bobbin spindle, and this acceleration sensor is arranged directly on the spindle support of the bobbin spindle. The measurement signal is transmitted to the measurement station by means of a rotary transmitter or by radio signal, where the measurement signal is evaluated. The known winding machine as well as the known method for monitoring the winding machine are such that the measuring signal is transmitted from a bobbin revolver holding and rotating a bobbin spindle to a stationary measuring station. Based on. Here, on the one hand, it is not possible to avoid additional disturbing influences that arise directly from vibrational excitation and on the other hand that are influenced by external influences.

  However, other systems for monitoring bobbin spindles are also known and are described, for example, in DE 10156454 A1.

  In known winding machines, a distance sensor is assigned to each of the above bobbin spindles, whereby the distance between the chuck and the axis of the bobbin spindle is monitored. Here, the measurement signal of the distance sensor is also transmitted from the bobbin revolver to the stationary measurement station without contact. Therefore, here too, disturbing effects can occur due to signal transmission from rotating components to a stationary measuring station.

  Furthermore, a winding machine is known from DE 100 46 603, in which the pressing roller is held on a swingable swinging arm, and this swinging arm is damped by damping means for damping vibration. The damping means is configured to be adjustable via a control device, and this control device is connected to a vibration sensor. Since the vibration sensor is fixed to the swing arm, the damping means can be adjusted depending on the instantaneous vibration state of the swing arm.

  Therefore, in the known winding described above, the vibration in the swing arm is detected by the vibration sensor, and the rigidity of the pressing roller during the bobbin winding is changed. Here, however, unacceptable vibration conditions are not identified and only the reinforcement of the system is performed.

  The object of the present invention is therefore to develop a winding machine of the form mentioned at the outset and a method for monitoring such a winding machine so that the unacceptable vibrations of the bobbin spindle are less affected by disturbances. It is to ensure that it is required more reliably.

  Another aim of the invention is to configure the measuring device in the winding machine described above to operate reliably with the highest possible function.

  The problem is that, with respect to the winding machine, according to the present invention, the measuring device has a fixed position sensor, and an interval contour is formed in one of the movable components. This distance contour is solved by cooperating with the distance sensor in a non-contact manner.

  For the method according to the invention for monitoring the take-up machine, a plurality of movably held in a machine frame generated by the vibration of one of the bobbin spindles during the bobbin take-up. The above solution can be obtained by measuring the position change of one of the components in a non-contact manner.

  Advantageous developments of the invention are defined by the characteristic configurations and combinations of characteristic configurations of the respective dependent claims.

  The present invention is advantageous in that the measurement of vibration described above is moved to the area of the winding machine where a rotary transmission of the measurement signal is not required. Here, the following knowledge is used in the present invention. That is, the knowledge that vibration generated in the bobbin spindle is transmitted to a plurality of components held by the machine frame via the bearing of the bobbin spindle and the bearing of the pressing roller is used. According to the amplitude and frequency of vibration in the above-described bobbin spindle, vibration is excited in the corresponding component. Such component vibration causes the position of the component in the machine frame to change at short time intervals. This vibrational position change can advantageously be measured in a non-contact manner by means of a distance sensor held fixed in position on the machine frame. In this case, the vibration state of the bobbin spindle can be directly derived from the measured vibration of the component. The spacing contour in the component is adapted to the motion trajectory of the component relative to the machine frame. It is customary that the components as described above can be guided on a straight line as a carriage, or can be guided on a circular path as a rotor or rocking arm.

  Another advantage of the present invention is that the above vibration identification does not depend on the connection between the vibration sensor and the vibrating component. Such a connection that is prone to obstructions forming contact between the vibration sensor and the component can be avoided by detecting the vibrations in a non-contact manner. The spacing sensor can advantageously be fixed in a zone of the machine frame that is relatively free from vibration risks.

  In order to detect the vibration of the bobbin spindle held in the winding region, a bobbin revolver that is a support for the bobbin spindle is particularly suitable as a movable component. For this purpose, according to an advantageous embodiment of the invention, the bobbin revolver is provided with a spacing contour surrounding it. This interval contour forms a measurement interval with the interval sensor described above, and this measurement interval is determined by selecting this interval contour.

  In order to perform the interval measurement for vibration identification independent of the position of the bobbin revolver, in an advantageous development of the invention, the interval contour is rotationally symmetrical with respect to the axis of rotation of the bobbin revolver. . As a result, the bobbin revolver can be measured both in a stationary state and in a rotating state. However, as an alternative to this, it is also possible to form the above-mentioned spacing contours rotationally asymmetric with respect to the rotational axis of the bobbin revolver. Thus, the rotation angle of each bobbin revolver can be taken into the above-described vibration detection. This development of the invention is particularly advantageous for carrying out particularly critical areas of the spinning process, for example at the end of the winding process. This development of the invention is particularly advantageous for passing through a particularly critical region of the spinning process, for example at the end of the winding process. Correspondingly, no measurement can be performed in a state where the bobbin revolver is in a non-critical region.

  In particular, in order to be able to monitor existing winding machines, the above-described development of the present invention is such that the above-mentioned spacing contour is formed in the spacing ring and this spacing ring is held by the above-described bobbin revolver. Is advantageous. Therefore, this spacing ring can be retrofitted to the bobbin revolver without problems.

  The spacing profile is preferably determined by the shape of the spacing ring in the spacing ring. In principle, however, it is also possible to form the abovementioned spacing profile asymmetrically in the spacing ring. However, the spacing ring is preferably configured in a circular shape and is centered or eccentric with respect to the rotational axis of the bobbin revolver. Thereby, the external shape of said space | interval ring can be directly utilized as a space | interval contour.

  In order to determine as accurately as possible the frequency and amplitude of the revolver vibration in the above-described bobbin revolver, the above development of the invention is particularly advantageous, in which the measuring device comprises a second distance sensor. The two spacing sensors are arranged offset from each other by an angle of 90 °. Thereby, the two measurement signals of these distance sensors can be used to uniquely determine the revolver vibration.

  However, as an alternative, it is also possible to detect the support vibration of the roller support that holds the pressing roller. For this purpose, the invention provides a variant embodiment in which the spacing contour is formed on the roller support. This roller support can be configured as a carriage having a linear motion trajectory or as a swing arm having a circular motion trajectory.

  If the roller support is constituted by a rocking arm, in an advantageous embodiment, the spacing contour is formed on a guide plate that is fixed in the vicinity of the pivot axis of the rocking arm. This also monitors the relatively small turning radius of the rocking arm, but has the advantage that the contour deviation is small in the spacing contour of the guide plate. A uniform spacing contour can therefore be used in the guide plate.

  The spacing sensor is advantageously oriented at short intervals perpendicular to the spacing contour. Here, even if the interval between the interval sensor and the interval contour is selected and the amplitude of the component is maximized, no contact occurs between the interval contour and the interval sensor. Like that.

  According to an advantageous embodiment of the invention, the measuring device is connected to a control device, in which the measuring signal is evaluated and converted by an evaluation unit. Here, an advantageous comparison with the boundary value for an unacceptable vibration shape can be made, so that when the boundary value is exceeded, the winding machine can be shut off directly.

  In a development of the invention in which the control device and the revolver driver of the bobbin revolver are connected, the measurement signal is used to control the bobbin revolver movement, for example, a pressing roller and a bobbin spindle. An additional advantage is that the spacing between the two can be increased due to bobbin growth. Therefore, the measurement signal can also be used advantageously to determine the angular position of the bobbin revolver. Is it possible to calculate the angular position of the bobbin revolver due to the position of the bobbin spindle in the bobbin revolver, the bobbin diameter of the bobbin in the bobbin spindle and the geometrical relationship between the position of the roller support or the pressing roller? Or direct measurements are possible.

  A non-contact inductive sensor is preferably used as the distance sensor. This inductive sensor cooperates with a spacing contour made of a metallic material. Thereby, current, voltage and / or frequency signals can be directly formed. These signals can be converted directly into corresponding control commands in the evaluation unit described above or in the control device. For this purpose, it is particularly advantageous if, in one development of the invention, the inductive sensor has an analog output for retrieving the signal.

  A feature of the method according to the invention for monitoring a winding machine is that the position of a movable component in the machine frame caused by the vibration of one of the bobbin spindles during winding of the bobbin is described above. It is to measure change. Therefore, the vibration excitation of the component formed by the vibration of the bobbin spindle is directly measured at this component. Therefore, the bobbin spindle vibration can be monitored without directly contacting the bobbin spindle due to the direct relationship between the vibration of the bobbin spindle and the vibration of the component generated in the above-described component members. Thus, an unacceptable vibration phenomenon that has previously been transferred to an unacceptable vibration phenomenon of the above-described component allows direct intervention in the operation of the winding machine.

  This change in position of the component caused by the component vibration described above is here preferably detected by distance measurement.

  In order to detect the vibrations of the constituent members, a bobbin revolver serving as a bobbin spindle support and a roller support serving as a holding unit for a pressing roller that contacts the outer periphery of the bobbin are particularly suitable.

  With the above-mentioned bobbin revolver, it is possible to detect a very accurate measured value of instantaneous revolver vibration by measuring the distance between the measurement points that are shifted from each other by two distance sensors. Can do.

  In order to be able to monitor in each operating state of the winding machine, it is advantageous to implement a variant of the above method for measuring the change in position of the bobbin revolver during stationary and / or rotational movement of the bobbin revolver. Use form. Therefore, the winding machine that drives the bobbin revolver by clock control to adjust the bobbin spindle and the winding machine that continuously rotates the bobbin revolver during bobbin traveling can be monitored without interruption. is there.

  The features of the method of the invention for controlling and monitoring the winding machine are characterized by the bobbin spindle vibration during the bobbin winding and the bobbin growth of the wound bobbin. The position change of the pressing roller and / or the position change of the bobbin revolver is measured in a non-contact manner by the distance sensor, and the measurement signal of the distance sensor is used to control the revolver driver and the bobbin driver. is there. This allows the functions of the winding machine to be directly coupled to one another via sensor monitoring. Therefore, the bobbin spindle vibration can be monitored without directly touching the bobbin spindle by the direct relationship between the vibration of the bobbin spindle and the component vibration generated in the roller support or the bobbin revolver. Thus, an unacceptable vibration phenomenon that was previously transmitted to an unacceptable vibration phenomenon of the above-described components allows direct intervention in the operation of the winding machine. Here, the above-described drive control of the bobbin revolver is performed together, and the bobbin can be continuously wound up without changing the position of the pressing roller by this drive control.

  The change in position of the roller support or the change in position of the bobbin revolver is preferably detected in a non-contact manner by an inductive sensor, which produces a current, voltage and / or frequency signal proportional to the interval value. . As a result, an accurate control command can be associated with each interval value, so that the operation state of the roller support can be detected when the bobbin is changed with a relatively large position change.

  In the following, the method according to the invention for controlling and / or monitoring a winding machine and the winding machine according to the invention will be described in detail with reference to the accompanying drawings and according to some embodiments.

1 is a schematic front view of a first embodiment of a winding machine according to the present invention. FIG. 6 is a schematic side view of another embodiment of a winding machine according to the present invention. FIG. 3 is a schematic rear view of the embodiment of FIG. 2. It is a schematic front view of another Example of the winding machine by this invention. FIG. 5 is a schematic side view of the embodiment of the winding machine according to the invention shown in FIG. 4.

  FIG. 1 schematically shows a first embodiment of a winding machine according to the invention in a front view. This take-up machine has a bobbin revolver 1 that is rotatably supported. The bobbin revolver is held by a rotary support 9 of a machine frame 2. The machine frame 2 is preferably configured as a revolver casing. The bobbin revolver 1 is connected to a revolver driver 10 and can be rotated in the direction of the arrow by driving the bobbin revolver 1 by this revolver drive unit.

  The bobbin revolver 1 has two bobbin spindles 3.1 and 3.2 which are arranged offset by an angle of 180 ° from each other. The bobbin spindles 3.1 and 3.2 protrude and are held by the bobbin revolver 1, and are respectively connected to a spindle driver (not shown). As the bobbin revolver 1 rotates, the bobbin spindles 3.1 and 3.2 are alternately guided to a plurality of winding regions and a plurality of replacement regions, whereby a plurality of yarns 15 are continuously applied to each bobbin 5 one by one. It is wound up. In the illustrated position of the winding machine, the bobbin spindle 3.1 is in the winding area and the bobbin spindle 3.2 is in the exchange area. The bobbin spin spindle 3.1 has a plurality of bobbin spools 4 and bobbins 5 wound on the bobbin spools 4, and a thread 15 is wound around the bobbins 5. The bobbin spindle 3.2 held in the exchange area has a new bobbin spool 4 from which the wound bobbin has already been removed.

  The number of bobbins wound simultaneously on the bobbin spindles 3.1 and 3.2 depends on the melt spinning process. Thus, in one of the bobbin spindles 3.1 and 3.2, for example 6, 8, 10, 12 threads can be wound simultaneously, or even 16 threads can be wound simultaneously. Is also possible.

  In the winding area, the bobbin spindle 3.1, the pressing roller 6, and the traverse device 7 cooperate. The traverse device 7 and the pressing roller 6 are disposed on the traverse support 8, and the traverse support is protruded and connected to the machine frame 2. In this embodiment, the traverse support 8 is fixedly connected to the machine frame 2, and the pressing roller 6 is held by the traverse support 8 via a movable rotor support 20. Basically, however, the traverse support 8 is movably connected to the machine frame 2 and the pressing roller 6 is guided by the moving motion of the traverse support 8 during the winding of the bobbin 5, whereby the bobbin spindle It may be possible to allow bobbin 5 to grow when the position of 3.1 is fixed. In the embodiment shown in FIG. 1, the moving motion for increasing the axial distance between the bobbin spindle 3.1 and the pressing roller 6 is performed by the rotational motion of the bobbin revolver 1, and therefore the bobbin spindle 3.1 is wound. Take multiple positions in the taking area.

  In order to position the bobbin spindle 3.1 and the bobbin spindle 3.2 by the rotational movement of the bobbin revolver 1, the revolver driver 10 is driven and controlled via the control device 14. The control device 14 is also connected to the bobbin spindles 3.1 and 3.2 and the driver of the traversing device 7, not shown here. The traverse device 7 has one traverse unit for each yarn, and the traverse unit is provided with traversing means for traversing and guiding the yarn. Such a traversing means can be constituted by, for example, a rotary blade or a rotary zigzag winding roller.

  For vibration monitoring, the winding machine has a measuring device 11, which in this embodiment is constituted by a distance sensor 11.1. At the support ends of the bobbin spindles 3.1 and 3.2, a spacing contour 13 is formed in the bobbin revolver 1 that surrounds the circumference, and this spacing contour cooperates with the spacing sensor 11.1 and this spacing sensor. And a common measurement surface. The bearing ends of the bobbin spindles 3.1 and 3.2 are formed with a spacing contour 13 which surrounds the periphery, which cooperates with the spacing sensor 11.1 and is shared with this spacing sensor. A measurement surface is formed. The interval contour 13 is formed symmetrically with the rotation axis 12 of the bobbin revolver 1. In this embodiment, the spacing contour 13 is formed in a circular shape with an outer diameter smaller than the diameter of the rotary bearing 9. Since the circular interval contour 13 is formed in the bobbin revolver 1 around the rotation axis 12, the measurement interval formed between the interval sensor 11.1 and the interval contour 13 is adjusted when the bobbin revolver 1 rotates. Is done.

  The distance sensor 11.1 is connected to the evaluation unit 19 via a signal line, and in this evaluation unit, the measurement signal of the distance sensor 11.1 is converted into revolver vibration. At the same time, the evaluation unit 19 compares the actual state of the revolver vibration of the bobbin revolver 1 with the allowable limit vibration state of the bobbin revolver, and if an unacceptable vibration is confirmed, A control command for shut-off is immediately formed. For this purpose, the evaluation unit 19 is connected to the control device 14. The measurement of the position change of the bobbin revolver 1 can be detected at an arbitrary angular position of the bobbin revolver by forming the interval contour 13 in a circular shape. Here, the change in the position of the bobbin revolver which is directly proportional to the interval contour can be detected in the stopped bobbin revolver or in the rotating bobbin revolver 1. However, as an alternative here, it is also possible to carry out the measurement by the above-mentioned distance sensor both in the stopped bobbin revolver and in the rotating revolver. For example, the following is also known. That is, the bobbin revolver 1 is rotated by clock control while the bobbin 5 is being wound, so that the bobbin 5 can be grown without substantially changing the position of the pressing roller 6 during the bobbin movement. It is known.

  In order to ensure that a precise spacing is required when the diameter of the spacing contour 13 is large, the spacing sensor 11.1 of the measuring device 11 is preferably configured as a non-contact inductive sensor, whereby this spacing sensor 11.1 As a result, a current signal and a voltage signal are formed directly, and these signals can advantageously be converted directly into control pulses in the evaluation device 19. For this purpose, the spacing contour 13 in the bobbin revolver 1 is formed from a metal material, which further facilitates the direct shaping of the spacing contour 13 in the bobbin revolver 1. In principle, however, it is also possible to use another measurement principle to determine the spacing. What is important here is that due to the vibration of the bobbin revolver 1, a change or a change in the position between the interval contour 13 and the interval 11.1 occurs. Only in this way, the measurement signal can be converted into revolver vibration.

  2 and 3 show another embodiment of the winding machine according to the invention. This alternative embodiment is shown schematically in side view in FIG. 2 and in rear view in FIG. Unless stated otherwise with respect to one of these figures, the following description applies to the two figures.

  2 and 3 are configured substantially the same as the embodiment shown in FIG. 1, components having the same functions have the same reference numerals, and only the differences will be described below. To do. For other points, please refer to the explanation given above.

  In the embodiment shown in FIGS. 2 and 3 as well, a plurality of yarns 15 are simultaneously wound around the bobbin in the bobbin spindles 3.1 and 3.2. Here, in the bobbin spindle 3.1, only two bobbins are shown by way of example.

  The bobbin spindles 3.1 and 3.2 are rotatably supported by the bobbin revolver 1 and are connected to bobbin drivers 16.1 and 16.2 arranged on the back side. The bobbin revolver 1 is rotatably supported by the rotation support portion 9 of the machine frame 2 and is driven via a drive chain 17 connected to the revolver driver 10. The revolver driver 10 and the bobbin drivers 16.1 and 16.2 are connected to the control device 14.

  A spacing ring 18 is fixed to the bobbin revolver 1 on the driver side of the bobbin revolver 1 (which is also the back side in this embodiment). The spacing ring 18 forms a spacing contour 13 with its outer diameter. The spacing ring 18 is circular in this embodiment, and the spacing contour 13 is the same as the shape of the spacing ring 18. The spacing ring 18 is held eccentrically with respect to the rotating shaft 12 of the bobbin revolver 1. A measuring device 11 is associated with the spacing ring 18 and has two spacing sensors 11.1 and 11.2 which are offset from each other by an angle of 90 °. The spacing sensors 11.1 and 11.2 are arranged in a fixed position in the machine frame 2 and are oriented at short intervals perpendicular to the spacing contour 13 surrounding the spacing ring 18. The distance sensors 11.1 and 11.2 of the measuring device 11 are connected to an evaluation unit 19, which is directly integrated into the control unit 14. Within the evaluation unit 19, the measurement signals of the distance sensors 11.1 and 11.2 are directly converted into revolver vibrations.

  Since the function for monitoring the winding machine and the function for controlling the drive of the winding machine is the same in this embodiment and the embodiment described above, see the above description. can do. In the embodiment shown in FIGS. 2 and 3 of the winding machine according to the invention, distance sensors 11.1 and 11.2 can additionally be used to detect the angular position of the bobbin revolver 1, respectively. By arranging the spacing ring 18 eccentrically with respect to the rotating shaft 12, the spacing between the spacing contour 13 and the spacing sensors 11.1 and 11.2 always changes with the rotation of the bobbin revolver 1. The absolute value of the distance value between the distance sensor 11.1 or 11.2 and the distance contour 13 can be directly converted into the angular position of the bobbin revolver. In this respect, depending on the angular position in the winding machine, the spacing measurement can be performed to identify unacceptable vibrations. Here again, the winding machine can be monitored without depending on the operating states of the bobbin revolver. Therefore, the position change of the bobbin revolver caused by the vibration of the bobbin revolver can be measured during the rotational movement of the bobbin revolver and in the stopped state.

  In the embodiment shown in FIGS. 1-3, the implementation is merely exemplary. Basically, the distance ring 18 can be centered and combined with only one distance sensor. Alternatively, however, in the embodiment shown in FIG. 1, the outer contour 13 is formed asymmetrically with respect to the rotating shaft 12, and the rotation angle of the bobbin revolver is determined between the distance sensor 11.1 and the outer contour 13. It is also possible to set different interval values between them. Thereby, in addition to vibration monitoring, it is also possible to obtain the angle position of the bobbin revolver.

  In the embodiment shown in FIG. 1, the above-described interval contour is illustratively formed in a circular shape. In principle, however, it is also possible to form the spacing contour 13 according to a mathematical function, for example to obtain an elliptical or helical contour. By forming the spacing contour 13 in this asymmetric manner, angular positioning over the entire outer periphery of the bobbin revolver is possible. Therefore, each angular position of the bobbin revolver can be associated with a predetermined value of the above measurement interval, so that a predetermined angular position can be associated with each measurement signal of the interval sensor 11. As a result, the bobbin spindles 3.1 and 3.2 can be guided by the bobbin revolver 1 to a predetermined exact angular position, in particular in the winding region, so that the above measurement signal is advantageously provided by the revolver driver 10. It can be used for control.

  Thus, for example, when the circular spacing contour 13 is arranged eccentrically or when the bobbin revolver 1 is rotated by 180 ° in the asymmetric spacing contour 13, the measurement interval with the spacing sensor 11.1 is the minimum and maximum values. And change between. The signal formed by the distance sensor 11.1 can be converted directly into the angular position of the bobbin revolver 1 in the control device 14. For example, to perform a bobbin exchange, the revolver driver 10 is activated by the controller 14 in the situation shown in FIG. The bobbin revolver 1 turns the bobbin spindle 3.1 from the winding area and guides it to the exchange area. In this situation, the interval contour 13 is guided past the interval sensor 11.1, so that the measurement interval changes, and consequently the measurement signal of the interval sensor 11.1 changes. When the minimum measurement interval between the interval sensor 11.1 and the interval contour 13 is measured and this is notified to the control device 14 via the interval sensor 11, the revolver driver 10 is deactivated. At this point, the bobbin spindle 3.2 is in the winding area and the bobbin spindle 3.1 is in the exchange area. Here, the thread can be delivered and a new bobbin is wound around the bobbin spindle 3.2.

  The measuring device 11 can therefore advantageously be used for monitoring vibrations in the winding machine and for controlling the winding machine to wind up the yarn.

  FIGS. 4 and 5 schematically show another embodiment of the winding machine according to the invention in front and side views. Since this embodiment is substantially the same as the winding machine embodiment shown in FIGS. 1 and 2, reference is made to the above description. Only the differences will be described below.

  In the winding area, the bobbin spindle 3.1 that protrudes and is held by the bobbin revolver 1 operates in cooperation with the pressing roller 6 and the traverse device 7. The traverse device 7 and the pressing roller 6 are disposed on a traverse support 8, and the traverse support is protruded and connected to the machine frame 2. In this embodiment, the traverse support 8 is fixedly connected to the machine frame 2, and the pressing roller 6 is held by the traverse support 8 via a movable roller support 20. The roller support 20 is configured as a swinging arm 21, and one end of the swinging arm 21 is held by the machine frame 2 or the traverse support 8 via the turning shaft 22. At the unfixed end of the swing arm 21, the end of the pressing roller 6 is rotatably supported. For this purpose, the swing arm 21 can be configured in the form of a fork, or it can be configured by two partial swing arms.

  However, basically, the roller support is configured as a stroke carriage that is linearly movably held on the machine frame 2 and is wound when the position of the bobbin spindle 3.1 is fixed. It is also possible to allow the bobbin 5 to grow.

  In the embodiment shown in FIG. 4, the moving motion for widening the axial interval between the bobbin spindle 3.1 and the pressing roller 6 is performed by the rotational motion of the spindle revolver 1. Take multiple positions in the winding area.

  In order to position the bobbin spindle 3.1 and the bobbin spindle 3.1 by the rotational movement of the bobbin revolver 1, the revolver driver 10 is driven and controlled via the controller 14. The control device 14 is also connected to the spindle driver 16.1 of the bobbin spindle 3.1, the spindle driver 16.2 of the bobbin spindle 3.2, and the traverse device 7. The traverse device 7 has one traverse unit for each yarn, and the traverse unit is provided with traversing means for traversing and guiding the yarn.

  In order to perform control and monitoring, the winding machine has a measuring device 11, which in this embodiment is constituted by a distance sensor 11.1. The distance sensor 11.1 is held at a fixed position on the machine frame 2 or the traverse support 9, and is directly associated with the roller support 20 of the pressing roller 6. The distance sensor 11.1 is disposed at the support end of the swing arm 21 in the vicinity of the turning shaft 22. A guide plate 23 having a spacing contour 13 is fixed to the swing arm 21 so as to face the spacing sensor 11.1, and this spacing contour cooperates with the spacing sensor 11.1 and is shared with the spacing sensor. A measurement surface is formed. The spacing contour 13 is selected as follows for the sensor head of the spacing sensor 11.1. That is, it is selected such that a predetermined interval value is adjusted between the guide plate 23 and the interval sensor 11.1 for each height position of the pressing roller 6 and thus for each angular position of the swing arm 21. It is. The distance sensor 11.1 is configured as an inductive sensor having an analog output unit, and the guide plate 23 is made of a metal material. The current or voltage signal is taken out via an analog output unit in the induction sensor. Each of these signals corresponds to a predetermined interval value.

  The distance sensor 11.1 is connected to the evaluation unit 19 via a signal line, in which the measurement signal of the distance sensor 11.1 is analyzed and converted. Here, in addition to pure measurement value evaluation for obtaining each height position of the pressing roller, the time course of the measurement signal is detected, and analysis is performed for vibration identification. Here, both the maximum vibration amplitude and the vibration frequency can be used in the evaluation unit 19 for the above analysis and evaluation. It is also possible to directly compare the above measurement signal with the stored boundary values for vibration amplitude and vibration frequency. If an unacceptable vibration is identified, a control command for shutting off the corresponding spindle driver 16.1 or 16.2 is generated in the control device 14, so that the corresponding bobbin spindle 3.1 or 3.2. The above-described yarn winding process can be interrupted. For this purpose, the evaluation unit 19 is connected to the control device 14.

  The height position of the pressing roller 6 is obtained from the absolute value of the interval value between the plurality of interval sensors 11.1 of the interval contour 13. This height position is determined by the growth of the wound bobbin 5 on the stopped bobbin spindle 3.1 or 3.2. From this, the angular position of the bobbin revolver can be obtained. So far, depending on the angular position in the winding machine, an interval measurement can be made to identify unacceptable vibrations. Here again, the winding machine can be monitored without depending on the respective operating states of the bobbin revolver. Therefore, these can be measured from the vibration of the roller support when the bobbin revolver is rotated or stopped. The angular position or the absolute spacing value of the bobbin revolver 1 is used in the control device 14 to allow the bobbin spindle 3.1 or 3.2 to perform a moving movement of the bobbin spindle 3.1 during the winding of the yarn 5. The revolver driver 10 is controlled. For this purpose, the control device 14 is connected to the revolver driver 10.

  The embodiment shown in FIGS. 4 and 5 is merely exemplary in the above description. Basically, in the case of a carriage-type roller support, it is also possible to form a vertically oriented spacing profile on the roller support, with the spacing sensor being oriented at a right angle. Thereby, vibration monitoring can be performed at an arbitrary position of the roller support. In this case, the spacing adjusted between the spacing contour and the spacing sensor is advantageously adjusted to a constant value by the spacing contour.

  1 bobbin revolver, 2 machine frame, 3.1, 3.2 bobbin spindle, 4 bobbin spool, 5 bobbin, 6 pressing roller, 7 traverse device, 8 traverse support, 9 rotating support, 10 revolver driver, 11 Measuring device, 11.1, 11.2 Interval sensor, 12 Rotating shaft, 13 Interval contour, 14 Controller, 15 Thread, 16.1, 16.2 Spindle driver, 17 Drive chain, 18 Interval ring, 19 Evaluation Unit, 20 Roller support, 21 Swing arm, 22 Rotating shaft, 23 Guide plate

Claims (21)

A winding machine for winding a thread onto a bobbin;
The winding machine
Two bobbin spindles (3.1, 3.2) drivable to house and wind the bobbin;
A bobbin revolver (1) rotatably supported on the machine frame (2);
A pressing roller (6);
A measuring device (11) for detecting vibrations of at least one of the bobbin spindles (3.1, 3.2),
The bobbin revolver (1) protrudes and holds the bobbin spindle (3.1, 3.2), and the bobbin spindle (3.1, 3.2) is alternately turned into a winding area and an exchange area by rotation. To guide and
The pressing roller (6) is associated with the bobbin spindle (3.1, 3.2) in the winding region, and is held by a movable roller support (20). In the machine
The measuring device (11) has a fixed position sensor (11.1),
A spacing contour (13) is formed in one of the plurality of components (1, 20) movably held in the machine frame (2),
The spacing contour (13) cooperates with the spacing sensor (11.1) in a non-contact manner,
A winding machine characterized by that. The winding machine according to claim 1,
The interval contour (13) is formed so as to surround the bobbin revolver (1).
A winding machine characterized by that. The winding machine according to claim 2, wherein the spacing contour (13) is formed rotationally or rotationally asymmetric with respect to the rotational axis (12) of the bobbin spindle (1).
A winding machine characterized by that. The winding machine according to claim 2 or 3,
The spacing contour (13) is formed in the spacing ring (18),
The spacing ring (18) is held by the bobbin revolver (1).
A winding machine characterized by that. The winding machine according to claim 4,
The spacing ring (18) is configured in a circular shape,
The spacing ring (18) is arranged centered or eccentric with respect to the rotational axis (12) of the bobbin revolver (1).
A winding machine characterized by that. The winding machine according to any one of claims 2 to 5,
The measuring device (11) has a second distance sensor (11.2),
The two interval sensors (11.1, 11.2) are offset by an angle of 90 ° and are associated with the interval contour (13).
A winding machine characterized by that. In the winding machine according to any one of claims 2 to 6,
The distance sensor (11.1) and the distance contour (13) are formed on the drive side of the bobbin revolver (1) in a revolver casing (2).
A winding machine characterized by that. The winding machine according to claim 1,
The spacing contour (13) is formed on the roller support (20),
A winding machine characterized by that. The winding machine according to claim 8,
The spacing contour (13) is formed in the guide plate (23),
The guide plate is fixed to the swing arm (21) in the vicinity of the pivot axis (22) of the roller support (20) configured as a swing arm (21).
A winding machine characterized by that. In the winding machine according to any one of claims 1 to 9,
The spacing sensor (11.1) is oriented at short intervals perpendicular to the spacing contour (13) in the machine frame (2),
A winding machine characterized by that. In the winding machine according to any one of claims 1 to 10,
The measuring device (11) is connected to a control device (14),
The control device (14) has an evaluation unit (19) for processing and converting the measurement signal,
A winding machine characterized by that. In the winding machine according to any one of claims 1 to 11,
The control device (14) is connected to the spindle driver (16.1, 16.2) associated with the bobbin spindle (3.1, 3.2),
The spindle driver (16.1, 16.2) can be controlled depending on the measurement signal of the distance sensor (11.1).
A winding machine characterized by that. The winding machine according to claim 11 or 12,
The control device (14) is connected to a revolver driver (10),
The revolver driver (10) can be controlled depending on the measurement signal of the distance sensor (11.1).
A winding machine characterized by that. In the winding machine according to any one of claims 1 to 13,
The distance sensor (11.1) is configured as a non-contact induction sensor,
The inductive sensor cooperates with the spacing contour (13) made of a metal material,
A winding machine characterized by that. The winding machine according to claim 14,
The inductive sensor has an analog output unit,
Voltage, current and / or frequency signals can be extracted by the analog output unit.
A winding machine characterized by that. A method of monitoring a winding machine,
The winding machine has two bobbin spindles protruding and supported by a bobbin revolver;
In the bobbin spindle, a plurality of yarns are alternately wound around the bobbin,
One of the two bobbin spindles is a method of monitoring a winding machine that cooperates with a pressing roller held on a movable roller support while winding the yarn on a bobbin.
Non-contact measurement of a change in position of one of the plurality of movable components in the machine frame caused by vibration of one of the bobbin spindles during winding of the bobbin. To
A method characterized by that. The method of claim 16, wherein
Detecting the change in position of the bobbin revolver and / or the change in position of the roller support by interval measurement;
A method characterized by that. The method of claim 17, wherein
The spacing measurement is performed by a spacing sensor oriented at right angles to the spacing contour or by a spacing sensor displaced in the spacing contour by an angle of 90 °,
A method characterized by that. The method according to claim 17 or 18, wherein
Measuring the change in position of the bobbin revolver during rotational movement and / or stop of the bobbin revolver;
A method characterized by that. A method for controlling and monitoring a winding machine comprising:
The winding machine has two bobbin spindles protruding and supported by a bobbin revolver;
A plurality of yarns are alternately wound around the bobbin in the bobbin spindle,
In the method, the bobbin spindle cooperates with the pressing roller held by the movable roller support while winding the yarn around the bobbin.
While the bobbin is being wound, the position change of the pressing roller and / or the position change of the spindle revolver due to the vibration of the bobbin spindle and the bobbin growth of the bobbin being wound is detected by the distance sensor Measured without contact,
Using the measurement signal of the distance sensor to control the revolver driver and the spindle driver;
A method characterized by that. The method of claim 16, wherein
Detecting the position change of the bobbin revolver and / or the position change of the pressing roller by non-contact distance measurement by an inductive sensor that forms a current, voltage and / or frequency signal proportional to the distance value;
A method characterized by that.

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