JP2018027857A - Work unit for textile machine for manufacturing lease package - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a work unit for a textile machine for manufacturing a lease package, comprising a let-off auxiliary device arranged on a spinning cop positioned at a let-off position, wherein said let-off auxiliary device includes a balloon restriction body for yarns to run of the spinning cop, and a sensor device for detecting the position of a cone of the spinning cop, and wherein the balloon restriction body and the sensor device so supported as can move in a vertical direction by using a driving device.SOLUTION: A sensor device 31 is formed as a mechanical feeler. Said feeler contacts the surface of a spinning cop 9 at a movably supported feeler finger 39, and is equipped with a changeover element 41. Said changeover element 41 operates a switch 42 in relation to the position of the feeler finger 39.SELECTED DRAWING: Figure 3

Description

  The present invention is provided with a feeding auxiliary device arranged on a spinning cup located at a feeding position, and the feeding auxiliary device includes a balloon restricting body for a yarn running from the spinning cup, and a cup of the spinning cup. A working unit of a textile machine for manufacturing a traverse package, wherein the balloon restricting body and the sensor device are supported so as to be movable in the vertical direction using a driving device. About.

  In the context of textile machines for making traversed packages, in particular automatic traverse winders, it has long been possible to facilitate the withdrawal of yarn from the spinning cup during the rewinding process in the area of the working unit of such textile machines. It is known to arrange so-called feeding assistance devices.

  That is, many patent documents already describe a variety of feeding assistance devices, which are arranged on a spinning cup positioned in the winding unit and are used during the rewinding process. Promotes yarn dissociation from spinning cups.

  These known unwinding aids in particular prevent yarn breaks in order to keep the yarn tension during the unwinding process at a level that is not harmful to the yarn, i.e. despite the relatively high unwinding speed during the unwinding process. Work to avoid as much as possible.

  Such a feeding assist device, which is also generally called a yarn withdrawal accelerator, is described, for example, in DE 42 21 559 A1 (DE 42 21 559 A1). A textile machine for producing, for example, a traversed package known from this document has a feeding auxiliary device formed in a tubular shape consisting of a plurality of parts, in the region of the working unit.

  Each of the feeding auxiliary devices has a first yarn guide element that functions as a balloon restricting body, which is fixed and adjustable in height and can be lowered onto the spinning cup. Similarly, a so-called thread guide bell supported so as to be adjustable in height is supported.

  Further, an optical sensor device is connected to the first yarn guide element, and the position of the cup cone of the spinning cup to be rewound can be detected by this sensor device.

  The sensor device itself, which is formed as a diffuse light sensor or a diffuse reflection sensor, is connected to the drive device via a control device such as a work unit computer.

  In this known feeding aid, during the rewinding process, the first yarn guide element is guided corresponding to the respective position of the cup cone of the spinning cup to be rewinded.

  An equivalent feeding aid is also described in EP 2690048 (EP 2 690 048 A2). This feeding auxiliary device also has a yarn guide element provided with an optical sensor device. This yarn guide element is determined during the rewinding process and is guided in accordance with the position of the cup cone of the spinning cup to be rewound.

  The sensor device is formed as a light barrier, i.e. the sensor and the receiver are arranged so that the light beam is interrupted as soon as the sensor device is lowered to the level of the cup cone of the spinning cup and thus too low. Has been.

  German Patent Application No. 102005018381 (DE 10 2005 018 381 A1) and / or German Patent Application No. 102005028760 (DE 10 2005 028 760 A1) include a textile machine for producing a tram roll package. Another variant of such a feeding aid arranged in the working unit is described.

  A feeding assist device described in DE 102005018381 is provided with a thread guide element functioning as a balloon restricting body supported movably in the vertical direction as usual, for example. A tube-shaped yarn guide device.

  The balloon limiter is fixed via the drive and is movable in the vertical direction so that the balloon limiter can be moved downwards following the progress of the spinning cup during the rewinding process. It has become.

  During the winding process, the lower edge of the balloon restriction is preferably always positioned approximately at the height of the cup cone of the spinning cup.

  In this known feeding assist device, an adapter for docking a so-called gripper pipe is further arranged on the end side of the yarn guide device in the yarn traveling direction. At this time, the adapter is configured such that a substantially leak-free connection of the negative pressure supplied gripper tube to the yarn guide device is ensured during delivery of the yarn released from the spinning cup.

  The equivalent feeding aid described in DE 102005028760 is, however, used in connection with the working unit of a textile machine for producing a trawl package, which is fixed and switched. A possible bobbin magazine is provided. That is, each work unit has a bobbin magazine in which a plurality of spinning cups prepared for the rewinding process are stored.

  As usual, the feeding assist device has a balloon restricting body and a rear thread guide device, and a gripper tube capable of supplying a negative pressure can be docked to the yarn guide device. Further, a yarn handling device is provided, and the yarn portion stretched between the spinning cup and the bobbin magazine is captured by this yarn handling device and conveyed to a region below the feeding auxiliary device supplied with negative pressure. be able to. The yarn handling device further cuts the yarn portion, and then delivers the yarn end of the yarn portion joined to the spinning cup to the feeding assist device.

  However, from both German Patent Application No. 102005018381 and German Patent Application Publication No. 102005028760, how guidance suitable for the function of the balloon restriction during the rewinding process is provided. There is no suggestion at all. That is, in these documents, for example, there is no description regarding the configuration of the sensor device.

  Starting from a working unit of the type described above, the problem underlying the present invention is to improve the sensor device of such a working unit feeding aid, i.e. from an environment such as dust or fly. It is to develop a sensor device that is sufficiently insensitive to the effects. It is desired that the sensor device according to the present invention can realize a high feeding speed for a long time during the rewinding process.

  In the configuration of the present invention that solves this problem, the sensor device is formed as a mechanical feeler, the feeler is in contact with the surface of the spinning cup by a feeler finger that is movably supported, and includes a switching element. The switching element operates a switch with a hall sensor in relation to the position of the feeler finger.

  Preferred configurations of the invention are the subject matter of the dependent claims.

  The configuration according to the present invention of the sensor device is that, in particular, the mechanical feeler is relatively insensitive to dirt, unlike the optical sensor device, and always operates reliably even in difficult working conditions. Has advantages. That is, such a mechanical feeler provided with a switching element has a sufficient resistance to dust particles and fiber residues, for example, that are hardly unavoidable in rewinding operations.

  Therefore, the use of a mechanical feeler can reliably ensure that the balloon restrictor of the feeding aid is always optimally positioned over a long operating time during the rewinding process, resulting in a high working unit. It can be operated at the winding speed.

  In a preferred embodiment, a permanent magnet is used as the switching element, which corresponds to the Hall sensor of the switch.

  Hall sensors that can be operated by permanent magnets are switching elements that have been found to be good in textile machine structures and are widely used, and operate very reliably even in difficult environmental conditions.

  Preferably, the switch with Hall sensor is arranged to be adjustable with respect to its mounting position, so that the working area of the mechanical feeler can be easily adjusted by the corresponding positioning of the switch. In other words, it is possible to easily determine at what inclination angle of the feeler finger the Hall sensor is attenuated or not attenuated by the permanent magnet arranged in the feeler finger.

  The mounting position of the switch is then preferably related to the diameter of the spinning cup to be monitored during the rewinding process.

  In spinning cups with a relatively large diameter (this causes a relatively large swivel angle of the feeler finger during the rewinding process), the switch is for example close to the spinning cup of a spinning cup with a relatively small diameter. Positioned in the area.

  In order to ensure at any time complete contact of the feeler finger on the surface of the spinning cup to be monitored, the feeler finger of the mechanical feeler is pivotally connected to the bearing housing via a shaft and by means of a spring element, The feeler finger is biased to be pressed toward the surface of the spinning cup.

  In a preferred embodiment, the feeler finger is further configured such that the contact surface of the feeler finger is first set to a preset value when the balloon restrictor is positioned at its upper end position before the start of the rewinding process. Only a is at the starting angular position located below the outer diameter of the spinning cup to be rewound. In this starting angular position of the mechanical feeler, where the feeler finger is not in contact with the surface of the spinning cup, the Hall sensor of the switch is barely transmitted by a permanent magnet.

  During the subsequent lowering of the balloon restrictor, the feeler finger is then brought into contact with the surface of the spinning cup and is then pivoted so that the transmission of the Hall sensor is minimal.

  At a specific turning angle of the feeler finger, the Hall sensor transmission is no longer given, which is accurately grasped by the work unit calculator as reaching the end of the cup cone of the spinning cup to be monitored.

  In a preferred embodiment, the feeding assistance device further has a corresponding holding contour, which is arranged so that the spinning cup is accurately centered with respect to the balloon restrictor during the rewinding process.

  That is, the corresponding holding contour serves in the context of the feeler finger to ensure that the spinning cup is always centered with respect to the balloon restrictor during the rewinding process.

  Preferably, the corresponding holding contour is movably supported and positionable relative to the position of the feeler finger. Furthermore, the corresponding holding contour and the feeler finger are each provided with a contact roller. With such a configuration, handling of the spinning cup during the rewinding process becomes careful.

  During the unwinding process, the feeler fingers and the corresponding holding contours ensure that the feeler fingers and the corresponding holding contours do not block the yarns running upwards, and thereby ensure the unwinding of the unwinding process. As low as possible.

  In a preferred embodiment, the switch Hall sensor is further connected to the work unit work unit computer via a signal line. This work unit calculator is suitable for the drive to always guide the balloon restrictor properly in function, in relation to the position of the cup cone of the spinning cup, as detected by the mechanical feeler. Works to position.

  The mechanical feeler and balloon restrictor may then be connected to one common drive device according to the first embodiment.

  However, according to an alternative embodiment, a first drive device for moving the mechanical feeler and a separate second drive device for positioning the balloon restrictor may be provided.

  One common drive at this time has the advantage that it is an inexpensive solution, whereas two separate drives at any time individually adjust the mechanical feeler relative to the balloon restriction. It can be positioned as possible.

  Further details of the invention are described below with reference to the embodiments shown in the drawings.

It is a side view which shows the working unit of the textile machine which manufactures a twill winding package with the feeding auxiliary | assistance apparatus in which the sensor apparatus was formed as a mechanical feeler. It is a figure which expands somewhat the feeding auxiliary | assistance apparatus provided with the mechanical feeler schematically shown in FIG. It is a figure which shows the mechanical feeler concerning this invention in detail. 4A to 4D are diagrams showing different working positions of the mechanical feeler according to the present invention during the rewinding process.

  FIG. 1 schematically shows a working unit 2 of a textile machine for producing a traversed package, in a side view, in an embodiment of a so-called automatic traverse winder 1.

  Such an automatic traverse winder 1 has a large number of work units 2 of the same type between both end frames (not shown). In these work units 2, there are known methods. Although not described in detail, the spinning cup 9 having a relatively small amount of yarn material manufactured in a ring spinning machine (not shown) installed in the front is rewound into a large volume traverse package 11.

  The completed traverse package 11 is then handed over to the machine-length traverse package transport device 21 using an automatically actuated service unit, for example, a traverse package changer, and is disposed on the machine end side. It is transported to a charge station (not shown) or a similar location.

  Such an automatic winding winder 1 further has a supply device (Logistikeinrichtung) formed as a spinning cup / winding tube conveying system 3 as shown in FIG. In the region, one bobbin magazine specific to the work unit, preferably a so-called circular magazine, is arranged.

  In the spinning cup / winding tube conveying system 3 shown in the embodiment, the spinning cup 9 or the spinning cup winding tube 34 circulates in a state where the spinning cup 8 is vertically oriented in the conveying tray 8 and stands upright.

  Of the spinning cup / winding tube transfer system 3, FIG. 1 simply shows one of a cup supply section 4, a reversibly drivable storage section 5, one of horizontal transfer sections 6 leading to the winding unit 2, and a winding. A tube return section 7 is shown.

  As schematically shown, the supplied spinning cups 9 are positioned in one of the feeding positions 10 arranged below the feeding auxiliary device 23 of the work unit 2 in the region of the lateral conveying section 6. Then, it is rewound around the traverse package 11.

  The individual work units 2 are therefore simply indicated in a manner known per se, but have a wide variety of devices, these devices simply spinning into a large volume traverse package 11. Not only can the rewinding of the cup 9 be ensured, but it is also ensured that the yarn running from the spinning cup is monitored during the rewinding process. The yarn defect detected at this time is immediately cleared to obtain a high package quality.

  Each work unit 2 has, for example, one winding device 24. The winding device 24 has a package frame 18 that is movably supported around a turning shaft 19, a package drive roller 26, and a yarn thread. And a swing device 28.

  In the embodiment shown in FIG. 1, the traversed package 11 is in contact with a package drive roller 26 that can be driven by an individual motor during the winding process, for example, by the package drive roller 26 by friction. The

  The yarn (not shown) is traversed using the yarn traversing device 28, that is, the yarn wound on the traverse package 11 is traversed by the finger yarn guide 29.

  Such a yarn traversing device is known and is described in detail, for example, in DE 198 58 548 A1.

  Such a working unit 2 of the automatic traverse winder 1 is usually further each of a splicing device 13, preferably as a pneumatically operated splicing device, and a suction nozzle 12 capable of supplying negative pressure, as well as negative. And a gripper tube 25 capable of supplying pressure. The suction nozzle 12 and the gripper tube 25 are connected to a machine specific negative pressure traverse 32 which is itself connected to a negative pressure source 33.

  Such a working unit 2 usually further comprises a respective one lower thread sensor 22, a thread tensioner 14, a thread clearer 15 with a thread cutting device 17, a thread tension sensor 20, and optionally a paraffin application device 16. ing.

  Preferably, the work unit 2 further includes a feeding assisting device 23, which feeds the lower yarn prepared in the spinning cup 9 to the gripper tube 25 supplied with negative pressure by an aerodynamic type. In the rewinding process, a positive effect is exerted on the yarn balloon generated when the yarn runs from the spinning cup 9 in the direction of lowering the yarn tension.

  Such a feeding assisting device 23 is usually a balloon restricting body 27 supported so as to be movable mainly in the vertical direction, a tubular thread guide device 36, and an adapter 40, as schematically shown in a perspective view in FIG. And the sensor device 31.

  At this time, the balloon restricting body 27 is fixed via the driving device 30 and is movable in the vertical direction R. At this time, the balloon restricting body 27 follows the feeding step of the spinning cup 9 during the rewinding process, It can be moved downward. That is, the work unit calculator 45 of the work unit 2 supplied from the sensor device 31 with the information on the position of the cup cone 51 of the spinning cup 9 to be fed is used when the lower edge 50 of the balloon restricting body 27 is in the process of rewinding. It always works to be positioned at the height of the cup cone 51 of the spinning cup 9.

  The drive unit 30 itself mainly comprises a drive device 38, preferably an electric step motor, a spindle 35 that can be driven in rotation, and a moving nut 37 connected to the balloon restricting body 27, that is, the spindle 35 and the moving nut 37. And form a screw transmission.

  As can be seen from the drawing, the sensor device 31 for detecting the position of the cup cone 51 of the spinning cup 9 during the rewinding process is arranged in the lower region of the balloon restrictor 27 and according to the invention is mechanical. The feeler 31 is formed.

  As can be seen from FIG. 3 in particular, the mechanical feeler 31 has a holding element 53, which is fixed to the balloon restricting body 27 and is driven in the vertical direction by the drive device 30 of the balloon restricting body 27. It is movable.

  For example, a bearing housing 48 is fixed to the holding element 53, and a feeler finger 39 of a mechanical feeler 31 and a switch 42 including a hall sensor 43 are fixed to the bearing housing 48.

  A feeler finger 39, which is supported pivotably about a shaft 47, is preferably provided with a contact roller 54 on the front side and a switching element 41 formed as a permanent magnet in the end region, is further provided with a spring element 46. The spring element 46 acts so that the feeler finger 39 is pressed against the spinning cup 9. The switch 42 is connected to a work unit computer 45 of the work unit 2 via a signal line 44, and this work unit computer 45 itself is further connected to the drive device 30 for the balloon restrictor 27 via a control line. Has been.

  As shown in FIG. 3, the feeler finger 39 of the mechanical feeler 31 has a starting angle position at the end position of the feeding auxiliary device 23, and at this starting angle position, the contact roller 54 has a cone of the spinning cup 9. Located at a distance from the surface extending in shape. That is, at this starting angle position, the contact surface of the contact roller 54 of the feeler finger 39 is arranged inside the outer diameter D of the spinning cup 9 to be rewound, excluding the conical region, by a preset value a ( See also FIG. 4A).

  In order to prevent the spinning cup 9 from escaping from the mechanical feeler 31 during the rewinding process, the holding elements 53 are further provided with so-called corresponding holding contours 49 which are each offset by 120 °. These corresponding holding contours 49 in order to ensure that the cup cone 51 of the spinning cup 9 is always properly centered with respect to the balloon restrictor 27 during the rewinding process in relation to the contact roller 54 of the feeler finger 39. work.

  Preferably, the corresponding holding contour 49 is supported in an adjustable manner and is likewise provided with a respective contact roller 52 on the front side. Before the start of the rewinding process of the new yarn lot, the corresponding holding contour 49 is preferably adjusted once according to the outer diameter of the new spinning cup 9 to be rewound.

  Instead of one common drive (30) for the mechanical feeler (31) and the balloon restrictor (27), but alternatively, a first for moving the mechanical feeler (31). Drive device (not shown) and a separate second drive device (also not shown) for positioning the balloon restricting body (27) may be provided.

Next, the function of the mechanical feeler 31 according to the present invention will be described using the embodiment shown in FIGS. 4A to 4D:
FIG. 4A shows the situation before the start of the switching process.

  The balloon restricting body 27 is positioned at its upper end position, and a new spinning cup 9 is introduced into the feeding position 10 of the work unit 2 at this upper end position and positioned below the feeding auxiliary device. Can do.

  As shown, the mechanical feeler 31 is not in contact with the cup cone 51 of the new spinning cup 9 at this point. That is, the feeler finger 39 is urged by the spring element 46 and is positioned at the inner end position. At the inner end position, the contact roller 54 of the feeler finger 39 is shifted by the value a, and the spinning cup 9 It is located inside the outer diameter D. At this point, the corresponding holding contour 49 is also located at a distance from the cup cone 51 of the spinning cup 9.

  FIG. 4B shows the situation at some later point in time.

  The balloon restricting body 27 and the mechanical feeler 31 together with the balloon restricting body 27 are lowered in the direction R by the drive device, so that the contact roller 54 and the corresponding holding contour 49 of the feeler finger 39 are brought into contact with the cup cone of the spinning cup 9. 51 is contacted.

  As can be seen from FIG. 4C, the balloon restrictor 27 and the mechanical feeler 31 are further lowered in the direction R, at which time the contact roller 54 and the corresponding holding contour 49 of the feeler finger 39 are placed on the cup cone 51 of the spinning cup 9. Slide along. At this time, the feeler finger 39 is pivoted outward against the force of the spring element 46, so that the switching element 41 formed as a permanent magnet arranged in the feeler finger 39 is turned into a hall sensor 43 arranged in the switch 42. The switch 42 connected to the work unit calculator 45 of the corresponding work unit 2 via the signal line 44 loses its signal. This loss of signal is handled by the work unit calculator 45 to determine the position of the end of the cup cone.

  The balloon limiter 27 and the mechanical feeler 31 are then moved further down in the direction R by a few mm (value x) and finally positioned at the optimal working position shown in FIG. 4D. .

  In this working position, the contact roller 54 and the corresponding holding contour 49 of the feeler finger 39 are positioned below the area of the spinning cup 9 where the yarn is swung out during the unwinding process, i.e. in this working position. Threaded balloons that circle around are not blocked.

  During the subsequent winding process, the balloon restricting body 27 and, in turn, the mechanical feeler 31 are further moved downward in the direction R at a feed rate proportional to the length of the yarn to be fed.

  When calculating the exact feed rate, the work unit calculator 45 takes into account, for example, information about the spinning cup height and length of the full spinning cup 9, ie the information entered into the work unit calculator 45 during the previous lot adjustment. Is done.

  If the spinning cup 9 to be fed out has a defective part in the form of a narrow part (Verduennung), the feeler finger 39 slides inward in the region of this defective part, and at this time, it is at the end position. Reach. This end position is recognized by the work unit computer because the Hall sensor transmits again at this position of the feeler finger.

  In other words, the work unit computer 45 recognizes that the defective portion has been reached and the related decrease in the diameter of the spinning cup 9 based on this information, so that the feed speed of the balloon restricting body 27 can be temporarily increased. work.

  When the end of the defect is reached, that is, when the spinning cup 9 has its normal diameter again and the switch 42 loses its transmission, switching back to the normal feed rate is performed.

Claims (14)

A feeding auxiliary device (23) disposed on the spinning cup (9) located at the feeding position (10) is provided, and the feeding auxiliary device (23) runs from the spinning cup (9). And a sensor device (31) for detecting the position of the cup cone (51) of the spinning cup (9), the balloon restricting body (27) and the sensor. The working unit (2) of the textile machine (1) for producing the trawl package, wherein the device (31) is supported movably in the vertical direction using the drive device (30),
The sensor device (31) is formed as a mechanical feeler, which is in contact with the surface of the spinning cup (9) with a feeler finger (39) supported movably and a switching element (41). The switching element (41) operates a switch (42) having a hall sensor (43) in relation to the position of the feeler finger (39). The working unit of a textile machine that manufactures packages.   2. The working unit according to claim 1, wherein a permanent magnet is used as the switching element (41).   The working unit according to claim 1, wherein the switch (42) is arranged to be adjustable with respect to its mounting position.   4. The working unit according to claim 3, wherein the mounting position of the switch (42) is related to the diameter of the spinning cup (9) to be monitored.   The feeler finger (39) biased by a spring element (46) is pivotally connected via a shaft (47) to a bearing housing (48) of the mechanical feeler (31). Item 1. The work unit according to item 1.   The feeler finger (39) can be positioned at a starting angle position, and the contact surface of the feeler finger (39) at the starting angle position is the spinning cup (9) to be rewound by a preset value (a). The work unit according to any one of claims 1 to 5, wherein the work unit is disposed inside the outer diameter (D).   The hall sensor (43) barely transmits by the permanent magnet (41) when the feeler finger (39) is arranged at the starting angular position. The unit of work described.   The feeding assist device (23) has a corresponding holding contour (49), which corresponds to the feeler finger (39) during the rewinding process. Working unit according to claim 1, wherein the working unit is arranged to accurately center the spinning cup (9) with respect to the balloon restriction (27).   9. The working unit according to claim 8, wherein the corresponding holding contour (49) is movably supported and positionable relative to the position of the feeler finger (39).   9. The work unit according to claim 8, wherein the feeler finger (39) and the corresponding holding contour (49) are each provided with a contact roller (52).   The feeler finger (39) and the corresponding retaining contour (49) are such that the feeler finger (39) and the corresponding retaining contour (49) do not interfere with the yarn running upward during the rewinding process. The working unit according to claim 1, wherein the working unit is arranged low.   The switch (42) is connected to a work unit computer (45) via a signal line (44), and the work unit computer (45) is connected to the mechanical feeler (30) by the driving device (30). From 1 to 3, in relation to the position of the cup cone (51) of the spinning cup (9), as detected by 31), to act promptly to follow and guide the balloon restriction (27). The working unit according to any one of 11 to 11.   13. The working unit according to claim 12, wherein the mechanical feeler (31) and the balloon restrictor (27) are connected to one common drive (30).   The working unit according to claim 12, wherein a first driving device for moving the mechanical feeler (31) and a separate second driving device for positioning the balloon restricting body (27) are provided. .

Images