JP2009502692A - Winding station for spinning machines that manufacture twill-wound bobbins - Google Patents

Abstract

  The present invention is a take-up station of a spinning machine for producing a traverse bobbin, and is provided with a feed auxiliary device (23), and the feed auxiliary device has a stationary tubular yarn guide device (36). The yarn guide device relates to a type installed on the upper side of the spinning cup (9) arranged at the feeding position. According to the present invention, the yarn guide device (36) has, on the inlet side, a yarn guide insert (39) that is replaceably arranged.

Description

  The present invention relates to a take-up station of a spinning machine for producing a traverse bobbin of the type described in the superordinate concept of claim 1.

  It has been known for several years with regard to automatic traversing machines to arrange devices for improving the drawing of yarn from the spinning cup in the area of the winding station of such spinning machines. In many patent documents, for example, an apparatus is described which assists the peeling of the yarn from the spinning cup, which is arranged on the upper side of the spinning cup arranged at the spinning position. That is, the device works to maintain the yarn tension during the rewinding process at a level that is harmless to the yarn.

  Such a device, which is also described as a thread drawing acceleration device, is described, for example, in DE 44 18 31 2 A1. This known yarn drawing acceleration device has a guide surface for the yarn, this guide surface has the shape of a frustoconical circumferential surface, in which case the large diameter faces the spinning cup. Yes. The frustoconical circumferential surface is penetrated by the truncated pyramid circumferential surface so that the edge of the truncated pyramid circumferential surface penetrates the frustoconical circumferential surface and a notch is formed at this time.

  Unlike other known yarn pulling acceleration devices, this device has the advantage that the yarn balloon formed when the yarn is pulled out of the spinning cup above the head is simply shaped rather than damaged or suppressed. have.

  Furthermore, German Patent Application Publication No. 4406076 and / or German Patent Application Publication No. 4221559 describes a spinning machine for producing twill-wound bobbins. In the area of the take-off station, it has a feeding auxiliary device formed into a tubular shape, each consisting of a plurality of parts.

  According to German Offenlegungsschrift 4,406,076, each such feeding aid consists of three tubular thread guide elements which can be inserted into and out of each other. That is, the lower guide element that can be lowered above the spinning cup is guided along the middle yarn guide tube so that the height thereof can be adjusted, and the middle guide tube itself has another tubular structure via the clamping means. This other tubular component is fixedly mounted on the assembly plate of the winding station. The first tubular thread guide element, which is conically formed in the region of the lower edge part, always has a conical part above the spinning cup, as defined by the associated drive device, during the rewinding process. The spinning cup is lowered so that it is positioned in the area of the so-called cup cone. The middle yarn guide tube, fixed to the upper tubular component by means of a clamping device, is defined for the respective length of the spinning cup to be processed during the rewinding process, for example at the start of a new part. It stays in the assembly position and has a narrow part on the entrance side. Multiple yarn balloons are divided by such narrow portions arranged on the inlet side of the middle yarn guide tube which is closely positioned above the winding tube tip of the spinning cup to be rewound.

  German Offenlegungsschrift 42 21 559 relates to a winding station with a comparable feeding aid. This known feeding assist device has a first yarn guide element which can be adjusted in height as defined, and which can be lowered onto the spinning cup. This yarn guide element likewise has a height adjustment. A supported thread guide bell is supported. This thread guide bell-shaped body is guided along a slide rod between two stoppers that define the maximum adjustment range of the end portion, and has a narrow portion on the exit side when viewed in the thread traveling direction. Yes. Even in such a known device, as described above, the length of the yarn balloon formed in the spinning cup when the yarn is pulled out above the head is limited by the position of the narrow portion of the yarn guide bell-shaped body. Is done.

  Since the narrow part of the thread guide element is always in contact with the traveling thread based on the rotating thread balloon during the rewinding process, this area is exposed to high wear. That is, the yarn guide element must always be checked for wear, particularly in a narrow area, and the yarn guide element must be replaced when necessary.

  Starting from a winding station of the type described above, the problem of the present invention is that such a winding station can be realized on the one hand with a high winding speed, and on the other hand the worn part can be replaced inexpensively without problems. It is to improve as there is.

  This problem has been solved according to the invention by a winding station as claimed in claim 1.

  Advantageous configurations of the invention are described in the dependent claims.

  The winding station constructed in accordance with the invention not only allows the winding station to be operated at a high winding speed, but also when necessary, by using a thread guide device with a replaceable thread guide insert. This has the advantage that the components that are subjected to a very strong load of such a thread guide device during the take-off operation can be replaced without problems. That is, when the thread guide insert is worn accordingly, the thread guide insert can be easily and very quickly replaced with a corresponding new component.

  In an advantageous configuration, the thread guide insert is fixed to the thread guide device by a magnet holder so that it can be easily removed in a frictional connection. Such a magnet holder, as claimed in claim 3, advantageously comprises a ferromagnetic extension and a permanent magnet arranged in the receiving hole for quick replacement of the thread guide insert In this case, it is not necessary to use a tool.

  As described in claims 4 and 5, the thread guide insert is advantageously made, at least in part, from a highly wear-resistant material, preferably an engineering ceramic material. That is, the thread guide insert is manufactured inexpensively from metal or plastic, for example by die casting or injection molding, and is disposed on a ferromagnetic extension for the magnet holder, and a highly wear-resistant thread introduction part. Consists of. As mentioned above, such a thread-introducing part, which is preferably produced from an engineering ceramic material, is in this case permanently attached to the substrate, for example by gluing. The yarn guide insert configured in this manner is not only manufactured at a relatively low cost, but also has a long service life.

  According to a sixth aspect of the present invention, in the first configuration, the yarn guide insert has an internal width corresponding to the internal width of the tubular yarn guide device. Advantageously, however, the internal width of the eyelet-like opening of the thread guide insert is smaller than the internal width of the thread guide device. In such a configuration, it is possible to have a desired influence on the shape of the yarn balloon, for example, by appropriately shaping the shape of the opening according to the fiber material or fiber strength used. The eyelet-like opening of the thread guide insert has, for example, a circular cross section as described in claim 11 or a polygonal cross section as described in claim 13. is doing.

  The yarn introduction region of the yarn guide insert is preferably formed in a funnel shape, and the introduction surface of the yarn guide insert extends in a straight line when viewed in a longitudinal sectional view (Claim 8) or in a convex shape. It is formed to be curved (claim 9). In both configurations, on the one hand, the yarn can be blown or sucked upwards through the eyelet-like opening without any problems at the start of the winding process, on the other hand, the yarn that rotates during the winding process is placed in the opening. It is guaranteed that it will not be damaged when rotating at.

  In another configuration of the thirteenth aspect, a notch is additionally provided in the convexly curved introduction surface of the yarn guide insert. This notch imparts vibration to the rotating thread, which also favors the thread balloon.

  Further details of the present invention will be described in detail with reference to the embodiments illustrated below.

  FIG. 1 schematically shows a spinning machine for producing a traverse bobbin, in this embodiment a so-called automatic traverse machine 1, in a side view. This type of automatic traversing machine 1 has a number of identical types of work or winding stations 2 between end frames (not shown). Since this winding station 2 is well-known and will not be described in detail, a spinning cup 9 made of a ring spinning machine (not shown) and having a relatively small amount of fiber material is a large-capacity traverse winding. The bobbin 11 is rewound.

  The produced traverse bobbin 11 is then handed over to the mechanical head traverse bobbin transport device 21 by a service unit that automatically operates, for example, a traverse bobbin changer, and a bobbin loading station disposed on the machine end side. Etc. (not shown).

  Such an automatic traversing machine 1 has a logistics device in the form of a bobbin / winding tube transfer system 3 as schematically shown in FIG. 1 or a work station in the area of a number of work stations 2. A unique bobbin magazine, preferably a so-called circular magazine, is arranged.

  In the bobbin / winding tube transfer system 3, a spinning cup 9 or an empty winding tube 34 fixed in the vertical direction on the transfer plate 8 circulates. Of the bobbin / winding tube transfer system 3, FIG. 1 shows only the cup supply section 4, the reverse driveable storage section 5, the transverse transfer section 6 leading to the winding station 2, and the winding pipe return guide section 7. Yes. As shown schematically, in this case, the supplied spinning cup 9 is positioned at the feeding position 10 in the region of the transverse transport section 6 of the winding station 2 and is rewound.

  The individual winding stations 2 are known for this purpose and are therefore not shown briefly, but have a wide variety of yarn processing devices, which have a spinning cup 9 with a large capacity. In addition to ensuring that the bobbin 11 is rewound, the yarn is monitored during the rewinding process to ensure that detected yarn defects are eliminated.

  One such known device is a winding device 24, which is a bobbin frame 18 that is supported movably around a pivot shaft 19, a bobbin driving device 26, and a traverse device. 28. In the embodiment shown in FIG. 1, the traverse bobbin 11 is located on a drive drum 26 which can be individually motorized, for example at its surface, during the winding process, and this drive drum 26 is connected via a frictional connection. Taken away.

  The yarn is traversed by the traversing device 28 when it is wound around the traverse bobbin 11. The traversing device 28 has a finger-like thread guide 29 in this embodiment. Such a traversing device 28 is known and is described in detail, for example, in DE-A 1 858 548.

  As already explained at the outset, each of these types of winding stations 2 usually further comprises a splicing device 13, preferably a pneumatically operating splice device, a suction pipe 12 capable of negative pressure loading, Similarly, it has a gripper tube 25 capable of negative pressure loading. In this case, the suction pipe 12 and the gripper pipe 25 are connected to a negative pressure traverse 32 unique to the apparatus. This negative pressure traverse 32 is connected to a negative pressure source 33.

  Such a work station 2 usually further includes a lower thread sensor 22, a yarn tensioning device 14, a yarn clearer 15 having a yarn trimming device 17, a yarn tension force sensor 20, and a wax processing device 16. Yes. Further, the work station 2 is provided with a feeding assist device 23 for delivering the lower yarn prepared in the spinning cup 9 to the gripper tube 25 capable of negative pressure load in a pneumatic manner. And also acts to advantageously affect the yarn balloon that is produced during the unwinding of the yarn from the spinning cup 9 during the winding process in order to reduce yarn tension.

  As shown in the perspective view of FIG. 2, such a feeding assist device 23 mainly includes a balloon restricting device 27 supported so as to be slidable in the vertical direction, a tubular yarn guide device 36, an adapter 40, and the like. Consists of. That is, the balloon restricting device 27 is moved in the vertical direction R as defined through the driving device 30 so that the balloon restricting device 27 is moved downward following the feeding step of the spinning cup 9 during the winding process. It is adjustable. Advantageously, in this case, the lower edge 50 of the element 27 is positioned approximately at the height of the cup cone 51 of the spinning cup 9.

  As shown in FIGS. 1 and 2, the yarn guide device 36 is preferably formed from a plurality of parts. That is, the yarn guide device 36 includes an upper tube 37 fixed to the adapter 40 arranged in a stationary manner, and a lower tube 38 slidably disposed with respect to the upper tube 37 and having an adjustable built-in height. ing. In the assembled state, the lower tube 38 is always in the upper tube 37 and the yarn guide insert 39 arranged in the lower tube 38 of the yarn guide device 36 is just above the winding tube tip of the spinning cup 9 positioned in the feeding station 10. It is fixed at the height as it is placed.

  According to the present invention, such a thread guide insert 39 is disposed in the lower tube 38 of the thread guide device 36 so as to be easily replaceable. The individual configuration of the thread guide insert 39 is shown in detail in FIGS.

  As is apparent from the various drawings, the introduction region 45 of the thread guide insert 39 is formed in a funnel shape. In this case, the introduction surface 46 is formed in a straight line as shown in the longitudinal sectional views in FIGS. 3, 5, and 7, or the introduction surface 46 is shown in FIGS. 4, 6, and 8. As shown in FIGS. 13 and 14, it is curved in a convex shape.

  3 and 4, the inner width d of the yarn guide insert 39 corresponds to the inner width D of the lower tube 38 of the yarn guide device 36. 5 to 8 show a thread guide insert 39 having an eyelet-shaped end portion 47. That is, the introduction region 45 is followed by an opening 47 whose inner normal width d is significantly smaller than the inner normal width D of the yarn guide device 36.

  The thread guide insert 39 is made, for example, directly from a wear-resistant material, preferably steel, as shown in FIGS. The extension portion 35 corresponds to the permanent magnet 42 fixed to the accommodation hole 41 in the yarn guide device 36. That is, the ferromagnetic extension 35 of the yarn guide insert 39 forms a magnet holder 31 together with the permanent magnet 42 of the yarn guide device 36.

  According to FIGS. 7 and 8, the yarn guide insert 39 includes a base 43 and a yarn introduction portion 44 fixed to the base 43 so as not to be dissociated. In this case, the base body 43 is formed, for example, as an injection-molded part or a die-cast part, and is made of, for example, aluminum or plastic. The yarn introduction portion 44 is made of a highly wear resistant material, for example, an engineering ceramic material. Even in such a case, the yarn guide insertion body 39 is fixed by the magnet holder 31 in the yarn guide device 36.

  As shown in FIGS. 11 and 12, the eyelet-shaped opening 47 in the thread guide insert 39 may be circular or polygonal. Additionally, as shown in FIG. 11, the introduction surface 46 may be provided with a notch or the like that affects the yarn during rotation.

  By means of the feeding auxiliary device 23 according to the invention with a replaceable yarn guide insert 39 on the inlet side of the yarn guide device 36, a winding process that can be realized at high winding speeds without damaging the yarn is ensured. Can do.

It is the side view which showed the winding station of the spinning apparatus which manufactures a traverse bobbin provided with the feeding auxiliary | assistance apparatus which has a stationary tubular yarn guide apparatus. FIG. 2 is a perspective view of the feeding assist device schematically shown in FIG. 1. It is the figure which showed 1st Example of the thread | guide guide insertion body arrange | positioned at the edge part side of a thread | yarn guide apparatus. It is the figure which showed 2nd Example of the thread guide insertion body arrange | positioned at the edge part side of a thread guide apparatus. It is the figure which showed 3rd Example of the thread | guide guide insertion body arrange | positioned at the edge part side of a thread | yarn guide apparatus. It is the figure which showed 4th Example of the thread guide insertion body arrange | positioned at the edge part side of a thread guide apparatus. It is the figure which showed 5th Example of the thread guide insertion body arrange | positioned at the edge part side of a thread guide apparatus. It is the figure which showed 6th Example of the thread | guide guide insertion body arrange | positioned at the edge part side of a thread | yarn guide apparatus. It is the figure which looked at the yarn guide apparatus provided with the permanent magnet arrange | positioned at the accommodation hole from the downward direction. It is the figure which showed another structure of the thread | guide guide insertion body which has a ferromagnetic extension part. It is the figure which looked at the thread | guide guide insertion body in the direction of the arrow F of FIG. It is the figure which looked at the thread | guide guide insertion body in the direction of the arrow F of FIG.

Claims (13)

A take-up station of a spinning machine for producing a traverse bobbin, which is provided with a feeding auxiliary device, and the feeding auxiliary device has a stationary tubular yarn guide device, In the type installed on the upper side of the spinning cup standing in the feeding position,
A take-up station of a spinning machine for producing a traverse bobbin, characterized in that the yarn guide device (36) has, on the inlet side, a yarn guide insert (39) arranged in an exchangeable manner.   2. Winding station according to claim 1, wherein the thread guide insert (39) can be fixed to the thread guide device (36) by means of a magnet holder (31), in a frictional connection, so as to be easily dissociable.   3. Winding station according to claim 2, wherein the magnet holder (31) has a ferromagnetic extension (35) corresponding to a permanent magnet (42) arranged in the receiving hole (41).   2. Winding station according to claim 1, wherein the yarn guide insert (39) is made from a highly wear-resistant material.   The yarn guide insert (39) is composed of a base body (43) and a thread introduction portion (44) fixed to the base body (43) so as not to be dissociated. The yarn introduction portion is manufactured from an engineering ceramic material. The winding station according to claim 4.   6. The thread guide insert (39) according to any one of claims 1 to 5, wherein the thread guide insert (39) has an internal width (d) corresponding to the internal width (D) of the thread guide device (36). Winding station.   Winding station according to any one of the preceding claims, wherein the thread guide insert (39) has a thread introduction area (45) formed in a funnel shape.   Winding station according to claim 7, wherein the yarn introduction region (45) has an introduction surface (46) extending linearly in a longitudinal section.   Winding station according to claim 7, wherein the yarn introduction region (45) has an introduction surface (46) that is curved in a convex manner when viewed in longitudinal section.   The thread guide insert (39) has an eyelet-shaped opening (47), and the inner width (d) of the opening (47) is larger than the inner width (D) of the thread guide device (36). 10. A winding station according to any one of claims 1 to 9, which is small.   11. Winding station according to claim 10, wherein the eyelet opening (47) of the thread guide insert (39) has a circular cross section.   The yarn guide insert (39) has a yarn introduction region (45) having an introduction surface (46) that is curved in a convex shape when viewed in a longitudinal sectional view, and the yarn introduction region (45) Winding station according to claim 11, wherein a notch (49) is arranged.   11. Winding station according to claim 10, wherein the eyelet-shaped opening (47) of the thread guide insert (39) has a polygonal cross section.

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