JP2005035795A - Energy accumulator for finger yarn guide of textile machine for manufacturing cross-wound bobbin - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an energy accumulator capable of gradually increasing potential energy toward a dead point of a traverse area on the one hand and guaranteed in long service life on the other hand, in regards to an energy accumulator for assisting conversion of movement of a finger yarn guide. <P>SOLUTION: This energy accumulator has at least two permanent magnets arranged in fixed positions and one permanent magnet capable of traversing with the finger yarn guide. These permanent magnets are arranged so that poles in the same direction face to each other, and the permanent magnets arranged in the fixed positions are positioned near a motor shaft of an electric mechanical driving device, which is formed with a finger thread guide turning shaft in a left or a right turning range of the finger yarn guide, so that magnetic force of the permanent magnets returns the finger yarn guide to a central area, wherein magnetic force of the permanent magnets are neutral, in the condition that the driving device is disconnected. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an energy accumulator described as a superordinate concept of claim 1.

  It is known that at least two prerequisites must be fulfilled in order to produce a fiber bobbin. One is that the fiber bobbin is rotated, and the other is that the yarn wound around the rotating fiber bobbin needs to be traversed along the bobbin axis. In so doing, if the yarn is traversed very slowly, a fiber bobbin with almost parallel windings is produced. In order to give such a fiber bobbin a large volume and a flat end face arranged substantially perpendicular to the bobbin axis, a restricting disk is required on both sides of the wound body. This limiting disk can be avoided if the yarn is traversed so that traversing occurs. As is well known, modern textile machines work at a relatively high winding speed when manufacturing a traverse bobbin, so that the yarn to be wound also needs a very high traverse value.

  Various traversing devices are known in connection with the traversing of yarns when manufacturing so-called traverse bobbins. In addition to the so-called small belt thread guides, for example, thread guide drums or finger thread guides which are preferably configured as grooved drums are used. Such finger thread guides are usually loaded by separate electromechanical drives.

  EP0838422A1 describes a finger yarn guide which is loaded by such an electromechanical drive. In addition, an energy accumulator in the form of a coil spring is arranged in the stroke end region of the finger thread guide, which helps to change the direction of the thread guide, thereby reducing the load on the thread guide drive and Shorten the stay time of the yarn guide at the end of the stroke. Since the position of the energy accumulator is mechanically adjustable, the stroke of the yarn guide can be adjusted, for example, to avoid a swollen edge in a traverse bobbin.

  The energy accumulator has various drawbacks. When the abutment comes into contact with each energy accumulator, the yarn guide is relatively shockedly braked, for example, so that the entire yarn feeding system is subjected to the highest load, and the yarn feeding system must have significant stability. . As a result, the mass and inertia of the yarn feeding system are significantly increased. However, at a traversing frequency of 30 Hz or higher, inertia already has a significant meaning for driving. Furthermore, noise is generated when the yarn guide collides with the energy accumulator. In a long textile machine having a large number of such yarn feeding systems, the noise becomes correspondingly large. Further, when the drive of the yarn guide is controlled by the adjuster, a load jump that significantly impairs the adjustment quality of the adjuster occurs in the region where the yarn guide enters the energy accumulator.

  Therefore, it has already been proposed to use an energy accumulator in which the potential energy of the energy accumulator gradually increases toward the turning point of the finger yarn guide.

  DE 19960024A1 describes a finger thread guide which is loaded by an electromechanical drive and which is simultaneously fixed to the drive casing and is preferably connected to a spiral spring. Since the potential energy of the spiral spring gradually increases toward the dead center of the traverse region, the driven finger yarn guide to which such a spiral spring is connected forms an almost harmonious vibration system.

The weakness of a well-adjustable traversing device that works perfectly both theoretically and practically is the torsion that can not answer the high demands imposed on these yarn feeding systems with sufficient certainty. The spring has.
EP0838422A1 Specification DE 19960024A1 specification

  The object of the present invention is to improve an energy accumulator of the type described above, on the one hand that the potential energy of this energy accumulator increases gradually towards the dead center of the traverse region and on the other hand that this energy accumulator is guaranteed a long lifetime. It is.

  The object of the present invention has been solved by an energy accumulator having the features described as the features of claim 1.

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

  Using a magnetic energy accumulator having at least two stationary permanent magnets and one permanent magnet that traverses with the yarn guide makes such devices not subject to mechanical wear and thus There is an advantage of having an almost indefinite lifetime. Furthermore, such energy accumulators can be manufactured cost-effectively and work very reliably under any operating conditions.

  In a preferred embodiment, both stationary permanent magnets are integrated in a magnet receiving plate as described in claims 2 and 3. The magnet receiving plate itself is fixed to the motor casing of the electromechanical drive of the finger yarn guide.

  In this case, the magnet receiving plate has one substrate and two support brackets protruding rearward beyond the substrate. The support bracket has a support hole for a stationary permanent magnet. The magnet receiving plate constructed in this way provides a stable counterpart for the magnetic force generated between the permanent magnets during the winding operation. Furthermore, such a magnet receiving plate can be manufactured cost-effectively, for example, by pressure casting or injection casting, and can be easily and reliably fixed to the motor casing of the thread guide driving device with screw pins or the like. Can do.

  According to a fifth aspect of the present invention, the permanent magnet capable of traverse movement is integrated into a switch piece that is non-rotatably coupled to the motor shaft of the yarn guide driving device. In this case, the switch piece can also be fixed to the motor shaft via a screw pin in an advantageous manner (claim 6). The advantages described in connection with claims 2-4 also apply to claims 5 and 6.

  The embodiment as claimed in claim 7 achieves the desired effect of the magnetic energy accumulator that helps to transform the movement of the finger thread guide by arranging the poles of the permanent magnet as described herein. Very advantageous.

  Embodiments of the present invention will be described below in detail with reference to the drawings.

  FIG. 1 shows a working part 2 of a textile machine for producing a traverse bobbin schematically in a side view. This textile machine is a so-called automatic traversing machine 1. Although not described in detail because it is well known in the working part 2 of such an automatic traverse winding machine 1, the spinning cup 3 produced by the ring spinning machine is rewinded to the traverse bobbin 5 having a large capacity. .

  The traverse bobbin 5 is delivered to a machine-length traverse bobbin transport device 7 using a traverse bobbin exchanging machine, which is not shown in the drawing, and works automatically, and is disposed on the machine end side. Transported to a bobbin loading station or similar.

  Such an automatic traversing machine 1 usually has a working device in the form of a bobbin and a wound tube conveying system 6. In the bobbin and winding tube transfer device 6, the spinning cup 3 or an empty winding tube circulates on the transfer tray 11. Of the bobbin and the winding tube transfer device 6, FIG. 1 shows only a cup supply section 24, a reversible driveable stock section 25, a lateral transfer section 26 leading to one winding part 2, and a winding pipe return guide section 27. Absent.

  Furthermore, the individual winding parts are known for their normal operation of the working part 2 since they are known and therefore only shown schematically. One of these devices is, for example, a winding device 4. The winding device 4 is normally movably supported about the pivot axis 12 and is pivotable about another axis arranged perpendicular to the pivot axis 12 in order to produce a conical traverse bobbin. It has a winding frame 8 that can be.

  In the embodiment shown in FIG. 1, the traverse bobbin 5 is supported on its surface by a supporting and pressing roller 9 during the winding operation, and this supporting and pressing roller 9 having no driving device is entrained by frictional connection. In this case, the traverse bobbin is driven by a drive device (not shown) capable of adjusting the rotation speed. This drive device is arranged directly on the winding frame 8 or integrated into the winding frame 8.

  Of course, driven rollers can be used in alternative embodiments. A traverse bobbin supported by the pressure roller winding frame so as to freely rotate is driven by a frictional connection.

  A yarn traversing device 10 is provided for traversing the yarn 16 during the winding process. Such a yarn traversing device 10 shown in FIG. 1 is described in relatively detail, for example, in DE 19960024A1. The yarn traversing device 10 has a yarn guide 13 mainly configured in a finger shape, and this yarn guide 13 is loaded by an electromechanical drive device 14 to cause the yarn 16 to traverse between the end faces of the traverse bobbin.

  As further shown in FIG. 1, the electromechanical drive 14 includes a magnetic energy accumulator 20 according to the present invention.

  Each work site 2 of the automatic traversing machine 1 has a work site computer 28 ′, which is connected to the central control unit 17 via the bus conductor 15.

  Air is supplied to the work site 2 through the intake air supply device 18. The intake air supply device 18 is connected to a negative pressure source 21 through a negative pressure conduit 19, for example.

  An electromechanical drive 14 for driving the finger yarn guide 13 with an energy accumulator, which is only schematically shown in FIG. 1, is shown in perspective in FIG.

  As shown in the figure, the driving device 14 has a motor casing 22 having a fixing flange 23 on the back side. The drive device 14 is fixed to the winding part casing 29 through the long hole 28 of the fixing flange 23.

  The magnetic energy accumulator 20 according to the invention has at least two fixed-position permanent magnets 30, 31 and at least one traversable permanent magnet 32 that traverses with the yarn guide 13.

  At that time, the permanent magnets 30 and 31 at fixed positions are integrated into the magnet receiving plate 33, and the bottom plate 41 of the magnet receiving plate 33 is fixed to the motor casing 22 of the electromechanical driving device 14 via, for example, a screw pin 34. . The bottom plate 41 of the magnet receiving plate 33 has two support brackets 35 </ b> A or 35 </ b> B formed integrally to receive the permanent magnets 30 and 31. Each of the support brackets 35A and 35B has a support hole 36A or 36B. A permanent magnet 30 or 31 at a fixed position is fixed to these support holes 36A or 36B.

  Further, a movable switch piece 37 is disposed in a region between the support brackets 35A or 35B. Similarly, the switch piece 37 can be fixed to the motor shaft 13 of the driving device 14 of the finger yarn guide 13 via an appropriate screw pin 38. The switch piece 37 has a passage hole 40 for receiving the permanent magnet 32 that traverses. The permanent magnets 30, 31, and 32 are arranged so that poles in the same direction face each other at corresponding support locations.

  In other words, a permanent magnetic force that acts in the protruding direction is generated between the permanent magnets 30 and 31 at fixed positions and the permanent magnet 32 that can traverse.

The magnetic force acting on the permanent magnet 32 capable of traversing motion disappears at the center position of the yarn guide 13 and thus at the center position of the switch piece 37. To example yarn guide 13 toward the turning point U ₁ that thrust released potential energy of the magnetic force between the S pole S of the S pole S of the permanent magnet 32 of the permanent magnet 30 gradually increases when traversing movement, At the same time, the potential energy of the magnetic force between the N poles N of the permanent magnets 32 and 31 gradually increases.

The maximum potential energy is achieved at the turning points U ₁ and U ₂ respectively and is used to accelerate the yarn guide 13 again in the opposite direction.

The figure which showed the winding site | part of the textile machine which manufactures a twill winding bobbin with the finger yarn guide which has the energy accumulator by this invention. FIG. 2 is a perspective view showing an electromechanical driving device for a finger yarn guide and a magnetic energy accumulator according to the present invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Automatic traverse winding machine, 2 Working part, 3 Spinning cup, 4 Winding device, 5 Traverse bobbin, 6 Bobbin and winding tube conveyance system, 7 Traverse winding bobbin conveyance device, 8 Winding frame, 9 Supporting / compression roller, DESCRIPTION OF SYMBOLS 10 Traverse device, 12 Rotating shaft, 13 Thread guide, 14 Drive device, 15 Bus conductor, 16 Thread, 17 Central control unit, 18 Suction air supply device, 19 Negative pressure conduit, 20 Energy accumulator, 21 Negative pressure source, 22 Motor casing, 23 fixed flange, 24 cup supply section, 25 stock section, 26 lateral conveyance section, 27 winding pipe return section, 28 'working part calculator, 29 winding part casing, 30 permanent magnet, 31 permanent magnet, 32 permanent magnet 33 Magnet receiving plate, 34 Screw pin, 35A, 5B bearing bracket, 36A, 36B bearing bore, 37 switch piece 38 threaded pin, 39 the motor shaft, 40 passing hole

Claims (7)

  A yarn bobbin that produces a traverse bobbin can be loaded by an electromechanical drive device that feeds the yarn to a fiber bobbin rotatably supported by a winding frame of a winding frame of a textile machine by a traverse motion and is centered on a pivot axis. In an energy accumulator of the type in which the potential energy gradually increases towards the transformation point of the traverse region of the finger yarn guide to assist in changing the direction of movement of the finger yarn guide which is limited and movable as the energy accumulator (20), And having at least two permanent magnets (30, 31) arranged in a fixed position and one permanent magnet (32) capable of traverse movement together with the finger thread guide (13). (30, 31) and (32) are arranged so that the poles (N or S) in the same direction face each other. An electromechanical drive device in which the permanent magnets (30, 31) arranged at fixed positions form a turning axis of the finger yarn guide in the left or right turning range of the finger yarn guide (13), respectively. 14) near the motor shaft (39), the magnetic force of the permanent magnets (30, 31, 32) is in a neutral central position (M) with the drive device (14) being cut off. An energy accumulator for a finger yarn guide of a textile machine for producing a traverse bobbin, characterized in that it is positioned to return a yarn guide (13).   The permanent magnets (32, 32) that can traverse together with the permanent magnets (31, 32) in the fixed position and the finger thread guide (13) have the same radial distance (R) from the pivot axis, The energy accumulator according to claim 1.   The stationary permanent magnets (31, 32) are integrated into one magnet receiving plate (33), and the magnet receiving plate (33) is a motor of the electromechanical drive device of the yarn guide (13). The energy accumulator according to claim 1, wherein the energy accumulator is fixed to an end of the casing (22).   The magnet receiving plate (33) has a bottom plate (41) having a back side support bracket (35A, 35B), and one of the permanent magnets (30 or 31) placed in the support hole (36A or 36B). The energy accumulator according to claim 3, wherein is fixed.   The energy accumulator according to claim 3, wherein the magnet receiving plate (33) is fixed to the motor casing (22) in a detachable manner via a screw pin (34).   The traverse permanent magnet (32) is integrated into a switch piece (37) that can be fixed to the motor shaft (39) of the electromechanical drive (14) of the yarn guide (13) in a non-rotatable manner. The energy accumulator according to claim 1.   The energy accumulator according to claim 6, wherein the switch piece (37) is fixed to a motor shaft (39) of the electromechanical drive (14) via a screw pin (38).

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