JP2012525305A - Winder - Google Patents

Abstract

  The present invention provides a winding having a plurality of winding points (1.1,..., 1.5) for winding a plurality of yarns around a bobbin (8.1,..., 8.5). The bobbin is held side by side on one rotatable winding spindle (6.1, 6.2), and each winding position is traversing means for reciprocating the yarn ( 4.1,..., 4.5) and a head yarn guide (3.1,..., 3.5) provided in front of the traverse means. In such a type of winding machine, in order to make the yarn tension uniform at the winding position, the winding yarn guides the direction of the incoming yarn in spite of various changes in the yarn supply. The take-up head yarn guide is connected to at least one vibration actuator that excites high frequency vibration in the head yarn guide.

Description

  The present invention is a winding machine of the type described in the superordinate concept part of claim 1, that is, a winding machine having a plurality of winding points for winding a plurality of yarns on a bobbin, Each winding part has a traverse means for reciprocating the yarn, and a head yarn guide placed in front of the traverse means. It is related to the format.

  Such a winder is known, for example, from EP 0 845 550 A1.

  Such a winder is used to wind up the just-spun synthetic yarn. The synthetic yarns are extruded as a number of filament strands from the polymer melt in parallel with each other in a spinning device, cooled and bundled. The yarns are then guided in parallel in the processing device, preferably via a godet system, and finally wound up in parallel on a bobbin in a winder. The yarns are guided at different intervals from melt spinning to winding. Initially, a spinning interval conditioned by the nozzle pitch of the spinning nozzle device is maintained between the yarns in the spinning device. After cooling, the yarns are grouped together for guidance through the processing equipment together with a significantly smaller processing interval. This processing interval is maintained between the yarns before entry into the winder. In a winding machine, it is necessary to maintain the winding interval conditioned by the bobbin width of the bobbin at each winding position between the yarns. Accordingly, the yarn group is expanded from the processing interval to the winding interval. As a result, a yarn guide means is provided in the transition region between the spinning device and the processing device and in the transition region between the processing region and the winder, which enables turning or displacement of individual yarns. In order to prevent the physical characteristics of the yarn from changing significantly during such turning or displacement, it is necessary to maintain a predetermined turning angle in the transition region, particularly in the yarn guided outside. Further, when the yarn is wound, there arises a problem that a change generated based on the frictional force in the yarn increases the yarn pulling force, and thus affects the winding tension when the yarn is wound around the bobbin.

  In order to produce quality equivalent yarns and equal bobbins at each winding point, the winding machine proposed in EP 0845550A1 has a supply device assigned to each yarn, which affects the yarn tension. Yes. In this known arrangement, the supply device is formed by a driven roller so that a predetermined yarn tension can be adjusted in each yarn having a history individually associated with its position. Such a system is advantageously used in a spinning device without an additional godet guide. If the yarn is guided in the processing device via a godet system, such a supply device adds additional equipment configuration costs.

  In order to supply the yarn from the processing device to the winder, in other systems known from the prior art, the yarn distribution takes place with little or no expansion from the processing interval. For example, in the winding machine disclosed in WO2004 / 074155, the head yarn guide placed in front of the traverse means is formed by a turning roller. In this known configuration, the yarn is fed from one end face side of the winder by a godet arranged on the side, so that the yarn is turned 90 ° at each turning roller. Such an arrangement can certainly avoid a large displacement due to the expansion from the processing interval to the winding interval, however, this known arrangement does not require the use of each yarn when supplying the yarn to the winding location. Has the disadvantage that it must be guided by a large winding in the head yarn guide.

  The object of the present invention is therefore to improve a winder of the type mentioned at the outset so that the group of yarns can be made as substantially as possible without differences in yarn tension, irrespective of the supply of yarn from one processing device. It is to provide a winder that can be supplied to a winding point.

  In order to solve this problem, in the configuration of the present invention, the head yarn guide at the winding position that guides the direction of the incoming yarn is at least one vibration actuator that excites high-frequency vibrations in the head yarn guide. It was connected with.

  Advantageous configurations of the winder according to the invention are described in claims 2 and below.

  The present invention is outstanding in that a guide with very little friction is possible regardless of the degree of winding of the yarn in the head yarn guide. Due to the high-frequency vibration of the head yarn guide, the contact stage and the non-contact stage occur alternately. And due to the high frequency of vibration, yarn tracking is not possible based on the mass inertia of the yarn, so that the vibration amplitude acts directly in the contact and non-contact zones during yarn guidance. As a result, the friction between the yarn and the head yarn guide can be significantly reduced. Furthermore, it has been found that such high frequency vibrations of the head yarn guide have surprisingly no effect on the traversing properties of the yarn. In particular, in a traverse stroke reversing section that causes extremely dynamic reversal of movement in the yarn, an inconvenient effect introduced into the yarn by vibration of the head yarn guide in some cases was not recognized. Transmission of vibration of the head yarn guide to the yarn can be avoided by the high frequency of vibration.

  The winding machine according to the invention has the particular advantage that the yarn supplied at each winding point is supplied to the winding point with little friction. Also, a large winding angle in the head yarn guide can be realized without forming a yarn tension which causes a problem in the yarn.

  It has been found that a very small vibration amplitude in the range of less than ± 5 μm is very effective for the head yarn guide to guide the yarn alternately in the contact state and the non-contact state. Yes. Therefore, in an advantageous configuration of the invention, the vibration actuator causes a vibration amplitude in the range of less than ± 5 μm at each head yarn guide, preferably in the direction of yarn winding in the head yarn guide. By generating vibration in the yarn winding direction (direction in which the wound yarn exerts a contact force on the head yarn guide), the head yarn guide and the yarn can be separated from each other with extremely small vibration amplitude.

  In order to obtain an advantageous guiding state without stimulating the yarn at normal winding speeds of the yarn in the range of 2000 to 2600 m / min, in an advantageous configuration of the invention, vibrations are generated in the frequency range of 10 to 100 kHz. It is done. As a result, even a very thin yarn count can be guided by the head yarn guide without stimulating the yarn.

  In order to obtain the same guiding state at each winding position as much as possible, in an advantageous configuration of the winding machine, the head yarn guides are arranged on the holding strips spaced from each other, the holding strips being vibration actuators. It is connected with. With this configuration, all the head yarn guides can be synchronously excited by vibration.

  In order to avoid vibration excitation inside the machine frame, in another configuration of the winder, a plurality of vibration actuators are provided, and one vibration actuator is assigned to each head yarn guide. As a result, vibrations depending on the degree of yarn winding can be excited individually in the head yarn guide.

  In order to avoid vibration excitation, the vibration actuator is advantageously controlled such that the vibrations of the adjacent head yarn guides are generated out of phase. In this way, the vibration overlap state can be completely eliminated.

  In particular, in an advantageous configuration of the winder, a single vibration actuator or a plurality of vibration actuators can directly transmit an electrical excitation signal in order to enable reliable operation even during sustained loads of vibration. It is formed by at least one piezoelectric element that converts into vibration motion.

  In a particularly advantageous configuration of the winding machine according to the invention, in which the group of yarns is fed to the winding machine in the middle by guide means assigned to the processing device, an even number of winding points are provided, the guide The means is held centrally with respect to the winding location. The supply of the yarn to the individual winding points requires an expansion that causes a deflection of the yarn in each head yarn guide.

  In order to be able to obtain the smallest possible spacing between the winding points and the processing device, in a particularly advantageous configuration of the winding machine according to the invention, even or odd winding points are provided. The guide means arranged on the head yarn guide for guiding the yarn group is held in the end region of the winding portion. With such a configuration, the head yarn guides generate substantially equal sized windings for distributing the yarns, thereby allowing the yarns supplied at the respective winding points to be wound with equal sized windings. It can be wound on the bobbin with take-up tension.

  Next, an embodiment of a winder according to the present invention will be described with reference to the drawings.

It is a side view which shows 1st Embodiment of the winding machine by this invention. It is a front view of 1st Embodiment shown by FIG. It is a side view which shows another embodiment of the winding machine by this invention. FIG. 4 is a front view of another embodiment shown in FIG. 3.

  1 and 2 show a first embodiment of a winder according to the present invention, FIG. 1 shows a first embodiment of the winder in a side view, and FIG. 2 shows a front view. It is shown in Unless otherwise indicated in the drawings, the following description is made for both figures.

  This embodiment of the winding machine according to the invention has a total of four winding points 1.1, 1.2, 1.3, 1.4, which are in the winding machine. They are formed side by side (FIG. 1). At each winding point 1.1 to 1.4, one thread is supplied and one bobbin is wound. Since the structures of the winding locations 1.1 to 1.4 are formed identically, the basic structure will be described with reference to the winding location 1.1 initially arranged on the operation side.

  The winding part 1.1 has a traverse means 4.1, by which the supplied yarn 2.1 is reciprocated in the traverse stroke. The traverse means 4.1 is formed, for example, by a grooved traverse drum in which the traverse yarn guide reciprocates in the traverse stroke. However, alternatively, the traversing means may be configured as a blade-type traversing device in which a plurality of blade tips driven in opposite directions reciprocate when the yarn is pulled out.

  A head yarn guide 3.1 is placed in front of the traverse means 4.1, and this head yarn guide 3.1 forms the apex of a so-called traverse triangle. The head yarn guide 3.1 forms a run-in part to the winding location 1.1, whereby the yarn is transferred from the processing device placed on top of the winding machine to the winding location 1.1. Can lead.

  In order to wind up the yarn 2.1 at the winding location 1.1, the bobbin winding tube 9 is fixed around the driven winding spindle 6.1. In this case, the winding spindle 6.1 extends over all winding locations 1.2, 1.3, 1.4 adjacent to each other, so that at each winding location 1.1-1.4. The supplied yarns 2.1 to 2.4 are wound up simultaneously.

  In order to supply the yarn 2.1 to the surface of the bobbin 8.1 at the winding location 1.1, the pressure roller 5 is arranged between the traversing means 4.1 and the winding spindle 6.1. Similarly, the pressure roller 5 also extends over the entire length of the winding points 1.1 to 1.4. The thread 2.1 is partially wound around the pressure roller 5 and then supplied to the surface of the bobbin 8.1.

  In the winding points 1.1 to 1.4, the head yarn guides 3.1 to 3.4 assigned to these winding points are arranged on the holding strip 11 together. The head yarn guides 3.1 to 3.4 have an interval equal to the winding interval in order to guide the yarn group of the yarns 2.1 to 2.4 in parallel to the winding points 1.1 to 1.4. Yes. The holding strip 11 is movably held and guided inside the receiving portion 16 of the holding body 12. A vibration actuator 15 is held by a holding body 12 at one end of the holding strip 11, and this vibration actuator 15 is coupled to a free end portion of the holding strip 11. The vibration actuator 15 is actuated via a control device (not shown) for generating high-frequency vibrations, so that the head yarn guides 3.1 to 3.4 to which the holding strip 11 is fixed are An oscillating motion is performed in the receiving portion 16 of the holding body 12.

  The holding body 12 is supported by the machine frame 10. The machine frame 10 serves to receive and fix the traversing means 4.1 to 4.4, the pressure roller 5 and the take-up spindle 6.1. In the illustrated embodiment, the pressure roller 5 is rotatably held by the machine frame 10 via the swing body 13. The take-up spindle 6.1 is supported in a cantilever manner on a take-up revolver 7 that is rotatably held on the machine frame 10. The take-up revolver 7 is shifted by 180 ° with respect to the take-up spindle 6.1 and holds the second take-up spindle 6.2, whereby the yarn to the take-up points 1.1 to 1.4 is retained. Can be continuously wound. A drive device (not shown) is assigned to each of the winding revolver 7 and the winding spindles 6.1 and 6.2.

  In the embodiment of the winding machine according to the invention shown in FIGS. 1 and 2, a group of four yarns 2.1 to 2.4 is fed to the winding machine via the guide means 14. In the illustrated embodiment, the guide means 14 that is part of the processing device (not shown) is formed by a godet unit comprising a driven godet 18 and an overrunning roller 19. In the godet unit, the yarns 2.1 to 2.4 are guided with a slight space between them, a so-called processing interval. The guide means 14 is arranged in the center with respect to the winding points 1.1 to 1.4, and the yarns 2.1 to 2.4 expand from the center toward the winding points 1.1 to 1.4. As a result, the yarns 2.1, 2.2 are wound around the head yarn guides 3.1, 3.2 belonging to the winding points 1.1, 1.2 in a clockwise direction. The yarns 2.3, 2.4 are wound around the head yarn guides 3.3, 3.4 belonging to the winding points 1.3, 1.4 in the counterclockwise direction. Since even-numbered winding points 1.1 to 1.4 are selected, the direction of the yarn supplied to each head yarn guide 3.1 to 3.4 is changed. Therefore, the thread is wound around the head thread guides 3.1, 3.2 in the clockwise direction and the head thread guides 3.3, 3.4 in the counterclockwise direction.

  In the head yarn guides 3.1 to 3.4 during the guides of the yarns 2.1 to 2.4, the height generated by the holding strip 11 and the vibration actuator 15 as shown by the double arrows in FIG. Oscillating motion of frequency occurs. The oscillating motion of the holding strip 11 is in this case horizontal, ie the direction of thread winding in the head thread guide 3.1, 3.4 (the thread 2.1-2.4 is the head thread guide 3.1, (Direction to apply contact force to 3.4). In this case, the holding strip is therefore reciprocally guided with a vibration amplitude in the longitudinal direction parallel to the winding spindle.

  On the one hand to guide the yarns 2.1 to 2.4 with and without contact at the changing stage in the head yarn guides 3.1 to 3.4, and on the other hand to the traveling yarns 2.1 to 2.4. In order to avoid the transmission of the vibrational motion, high-frequency vibrational motion having a small amplitude is generated by the vibration actuator 15. For example, the holding strip 11 moves with a vibration amplitude of less than ± 5 μm at the maximum. Depending on the yarn winding speed, which may be located in the range of 2000 m / min to 6000 m / min or in the range of more than 6000 m / min, depending on the method and yarn type, the head yarn guide 3.1-3 The vibration of the holding strip 11 that excites .4 occurs in the frequency range of 10 to 100 kHz. As a result, vibration excitation can be avoided even for yarns having a very small yarn count. The high-frequency vibrations of the head yarn guides 3.1 to 3.4 enable the guides with very little friction of the yarns 2.1 to 2.4 almost independent of the degree of winding. Even when the number of yarns is large or when the yarns expand considerably correspondingly, equal yarn tension can be adjusted at each winding point to wind up the yarns.

  The yarns 2.1 to 2.4 are laid back and forth at each of the winding points 1.1 to 1.4 by means of the traversing means 4.1 to 4.4 which are placed later, and at the winding spindle 6.1 Twill winding bobbin is wound. The supply and placement of the yarns 2.1 to 2.4 are performed together on the respective surfaces of the bobbins 8.1 to 8.4 via the pressure roller 5. For this purpose, the pressure roller 5 is held on the surface of the bobbins 8.1 to 8.4 with a predetermined pressure.

  3 and 4 show another embodiment of the winder according to the invention with an odd number of winding points. In the embodiment of FIG. 3, five winding locations 1.1 to 1.5 are shown, and these winding locations 1.1 to 1.5 are the winding locations of the embodiment shown in FIG. And substantially the same. Therefore, in the following, description of the same part is avoided and only differences are described.

  In another embodiment of the winder according to the present invention shown in FIGS. 3 and 4, guide means 14 are assigned to the end portions on the end face side of the winder at the winding points 1.1 to 1.5. Has been. In this case, the guide means 14 is formed by a godet 18 wound once, and the yarn is guided in the godet 18. The distribution of the yarns 2.1 to 2.5 is carried out from a substantially horizontal plane, which is arranged slightly above the head yarn guides 3.1 to 3.5. As a result, the head yarn guides 3.1 to 3.5 are wound about 90 °. Such an arrangement has the special advantage that it can form a very compact spinning device, which requires only one upper hierarchy for the spinning device. is there.

  Head yarn guides 3.1 to 3.5 are assigned to the winding points 1.1 to 1.5. Each head thread guide 3.1-3.5 is connected to one of a plurality of vibration actuators. For example, the head thread guide 3.1 is directly coupled to the vibration actuator 15.1, the head thread guide 3.2 is coupled directly to the vibration actuator 15.2, and the other head thread guides 3.3 to 3.5. The same can be said. The vibration actuators 15.1 to 15.5 are held by the holding body 12. Activation and control of the vibration actuators 15.1 to 15.5 are performed via the control device 17. In this case, the vibration actuators 15.1 to 15.5 can be individually excited by vibration via the control device 17, or the vibration actuators 15.1 to 15.5 can be group-controlled. Therefore, according to the selection of the control principle, the vibration motion can be synchronously excited via the vibration actuators 15.1 to 15.5 with respect to the head yarn guides 3.1 to 3.5. However, it is also possible to perform the oscillating motion of the head yarn guides 3.1 to 3.5 out of phase.

  Each of the vibration actuators 15.1 to 15.5 causes a vibration motion in the head thread guide 3.1 to 3.5 to which the vibration actuators 15.1 to 15.5 are directed substantially in the direction of winding the head thread guide. This oscillating motion can advantageously be carried out in the frequency range of 10 to 100 kHz with a slight vibration amplitude in the range of less than ± 5 μm in each head yarn guide 3.1 to 3.5. For this purpose, the vibration actuators 15.1 to 15.5 preferably have piezoelectric elements (not shown) that convert the electrical excitation signals directly into motion in a piezomechanical manner. The amplitude of vibration is defined by the operating voltage of the piezoelectric element. Furthermore, such piezoelectric elements can be reliably operated in different frequency ranges.

  In the embodiment of the winder according to the invention, the head yarn guide is shown as a so-called sleeve yarn guide. Basically, however, all general purpose yarn guide elements can be used to guide the synthetic yarn in order to guide the yarn to the winding position as a head yarn guide. For example, a slit-shaped or rod-shaped thread guide element can be used. Similarly, the head yarn guide may be formed as a guide roller in which vibration is excited in the surroundings by a radial vibration motion.

  1.1, 1.2, 1.3, 1.4, 1.5 winding location, 2.1, 2.2, 2.3, 2.4, 2.5 yarn, 3.1, 3. 2, 3.3, 3.4, 3.5 head thread guide, 4.1, 4.2, 4.3, 4.4, 4.5 traverse means, 5 pressure roller, 6.1, 6. 2 winding spindle, 7 winding revolver, 8.1, 8.2, 8.3, 8.4, 8.5 bobbin, 9 bobbin winding tube, 10 machine frame, 11 holding strip, 12 holding body, 13 Swing body, 14 guide means, 15, 15.1, 15.2, 15.3, 15.4, 15.5 vibration actuator, 16 receiving portion, 17 control device, 18 godet, 19 overrunning roller

Claims (9)

A winding machine having a plurality of winding points for winding a plurality of yarns on a bobbin, wherein the bobbins are held side by side on one rotatable winding spindle, and each winding point is a yarn In a type having a traverse means for reciprocally guiding the head and a head yarn guide placed in front of the traverse means,
A winding machine characterized in that a head yarn guide at a winding position for guiding the direction of a moving yarn is connected to at least one vibration actuator for exciting high-frequency vibrations to the head yarn guide. .   2. Winding machine according to claim 1, wherein a vibration actuator causes a vibration amplitude in each head yarn guide in the range of less than ± 5 [mu] m, preferably in the direction of yarn winding in the head yarn guide.   The winder according to claim 1 or 2, wherein the vibration of the head yarn guide is generated by a vibration actuator in a frequency range of 10 to 100 kHz.   The winder according to any one of claims 1 to 3, wherein the head yarn guides are arranged on a holding strip at a distance from each other, and the holding strip is connected to a vibration actuator.   The winding machine according to any one of claims 1 to 3, wherein a plurality of vibration actuators are provided, and one vibration actuator is assigned to each head yarn guide.   6. The winding machine according to claim 5, wherein the vibration actuator is controllable by a control device so that vibrations of adjacently arranged head yarn guides are generated in the same phase or out of phase.   The single vibration actuator or the plurality of vibration actuators each have at least one piezoelectric element that directly converts an electrical excitation signal into vibrational motion. Winder.   An even number of winding points are provided and guide means arranged on the head yarn guide for supplying the yarn group is held centrally with respect to the winding point. The winder according to any one of the above.   An even number or an odd number of winding points are provided, and the guide means arranged on the head yarn guide for supplying the yarn group is held in the end region of the winding point. The winder according to any one of 7 to 7.

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