JP2006089284A - Inserting and fitting arbor used for working part of automatic cross winder - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To assure the accurate positioning and adjustment of a yarn feeding bobbin during rollback process and fixedly position winding tubes of various types and sizes always with a sufficiently high tightening force. <P>SOLUTION: A tightening device 32 comprises at least two tightening claw groups 33 and 34 installable on the inner walls of fine spinning cup winding tubes at different heights. Coiled springs 23 and 24 are installed in a housing 17, and the coiled springs load the tightening claw groups individually in the "tightening" direction. The tightening claws 16 and 26 of the tightening claw group are supported on the housing 17 through a turning pivot 25 positioned on the outside of the winding tubes where the yarn feeding bobbin is fixedly positioned. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an insertion mandrel used in a working part of an automatic traverse winder, the insertion mandrel having a tightening device that engages in a winding tube of a yarn feeding bobbin, and the tightening device is a housing. It relates to the form that is embedded in.

  Various configurations of automatic traverse winders with a large number of working parts have been known for a long time. In this case, in these working parts, the yarn feeding bobbins fixed to the insertion mandrel respectively have yarn defects. It is rewound into a take-up package which has been removed and / or has a large volume, preferably in the form of a winding package.

  For example, as described in German Offenlegungsschrift 10040106, an automatic twill cup is provided in which new spinning cups are continuously fed to the working part via a machine-specific cup-winding tube conveying system. Winding winders are known. The spinning cups are in this case arranged on a transport table, which has an insertion mandrel for fixing the spinning cup in position even during the rewinding process.

  Furthermore, automatic traverse winders are known which have a magazine dedicated to the working part for one or more yarn feeding bobbins in the range of the individual working part.

  European Patent Application No. 0970910 describes an automatic winding winder having a traversing package handling / conveying device, for example, in the range of a working section. Further, a transport unit is provided, and in this transport unit, a feeding bobbin provided for rewinding is mounted on the insertion mandrel. The transport unit can be converted from a storage position to a feeding position by the traverse package handling and transporting device.

  The working parts of the automatic winding winder described in DE 198 16 188 A1 are each equipped with one turret type rotary magazine. In this known textile machine, in addition to the rotary magazine for storing the spinning cups in the area of the working part, a cup chute for transferring the spinning cups to the feeding position and the refining process during the rewinding process. And an insertion mandrel for fixing the position of the spinning cup. In this textile machine, the spinning cup is revolved from a bobbin magazine that is rotatably supported via a cup chute to an insertion mandrel that is positioned in the take-off position for the reversing. Be transported. The insertion mandrel turns to the working position together with the spinning cup after the spinning cup is taken out. In this working position, the yarn located in the spinning cup is rewound into a large volume traverse package. The yarn is then inspected for yarn defects at the same time. Yarn defects are sometimes eliminated.

  A known automatic traverse winder insertion mandrel is generally formed as a two-point clamp, as described in detail, for example, in Swiss Patent 396,718. That is, the insertion mandrel that is engaged in the winding tube of the feeding bobbin has a rigid abutting surface and a clamp lever that is rotatably supported relative to the abutting surface. The clamp lever positions the pay-out bobbin on the insertion mandrel at the time of separating and expanding. Therefore, in this clamping position of the insertion mandrel, the contact surface and the clamp lever are in contact with the inner wall of the wound tube.

  However, with the known insertion mandrel operating in a two-point clamp manner, the feeding bobbin is always sufficiently accurate, as required to obtain high thread withdrawal speeds in modern automatic traverse winders. It is not always possible to guarantee a position adjustment that is kept constant.

  In connection with an automatic traverse winder having a machine-specific spinning cup / winding tube conveying system, a dish-shaped conveying table further equipped with an insertion mandrel is known. That is, this known transport table has a central center mandrel, and a special tightening system is incorporated in the center mandrel. For example, in such a transport table described in German Patent Application No. 4227302, a plurality of tightening claws (tightening claws) are incorporated at different heights into a central center mandrel. The tightening claw in this case forms two tightening claw groups, both tightening claw groups being applied to the spinning cup winding from the inside in a sufficiently loaded state independently and independently of each other by spring force. At this time, the spinning cup is accurately positioned and fixed in the vertical direction.

However, in the case of such a known transport table, the available tightening stroke of the insertion mandrel is greatly limited based on the fact that the pivot shaft of the tightening claw is arranged inside the central center mandrel. Occurs. Based on this fact, in actual use, the transport table is only suitable for a specific winding tube size, and when the winding tube size is changed, it is generally necessary to replace the transport table. Furthermore, due to the fact that the pivoting shaft of the clamping claw is arranged inside the central mandrel at the center of the transport table, a very inconvenient lever characteristic is produced, and thus a very limited clamping force of the clamping system of the transport table. Will be invited. In other words, the known tightening system arranged inside the center mandrel at the center of the transfer table is an insertion mandrel that is desired to be tightened accurately without any troublesome recombination work, especially with various sizes of winding tubes. Is almost unsuitable for.
German Patent Application Publication No. 10040106 European Patent Application No. 0970910 German Patent Application Publication No. 19816188 Swiss Patent No. 396718 German Patent Application Publication No. 4227302

  Starting from the known prior art described above, the problem underlying the present invention is that during the rewinding process, a precise bobbin position adjustment is ensured while at the same time differently sized tube sizes are always present. It is an object of the present invention to provide an insertion mandrel used in a working part of an automatic traverse winder which also ensures that the position can be fixed with a sufficiently high tightening force.

  In order to solve this problem, according to the configuration of the present invention, in the insertion mandrel of the type described at the beginning, at least two tightening claws that the tightening device can abut against the inner wall of the spinning cup winding tube at different heights. A force introduction means is disposed inside the housing, the force introduction means loading the tightening claw groups separately from each other in the direction of “tightening”, Each of the tightening claws is supported by the housing via a pivot fulcrum located outside the winding tube to which the yarn feeding bobbin is to be fixed.

  According to the first aspect of the present invention, in the insertion mandrel according to the present invention, the tightening claw is supported by the turning fulcrum located outside the winding tube to be fixed in position. The leverage that can be achieved in the clamping claw in this way, combined with the corresponding force introduction means, results in a sufficiently high clamping force in the clamping claw, irrespective of the size of the winding tube. Furthermore, the precise nature of the fixed yarn feeding bobbin in the insertion mandrel is based on the fact that these clamping claws are distributed in at least two clamping claw groups which are effective at different heights and work sufficiently separately from each other. Reproducible position adjustment is achieved.

  As claimed in claim 2, in an advantageous configuration of the invention, a spring element is used as a force introducing means for loading the tightening claw group. In this case, it is advantageous to use a coil spring that acts as a compression spring as described in claim 3. Such coil springs are advantageous because they are available as mass-produced parts, and are long-lived components that have proven to be advantageous. Such a component produces a sufficiently high clamping force in a suitable design.

  In an advantageous configuration as claimed in claim 4, two coil springs having different diameters are used. In this case, the large-diameter coil spring located on the outside acts on the tightening claw of the upper tightening claw group via the switching / guide sleeve, and the small-diameter coil spring located on the inner side acts on the lower side via the switching / guide plunger. It acts on the tightening claw of the tightening claw group. Based on such an arrangement, on the one hand, the entire insertion mandrel can be made compact, which is very important in view of the limited space circumstances as is well known. On the other hand, a sufficiently high tightening force can be applied to the tightening claw.

  As described in claims 5 and 6, it is advantageous if the clamping claw is formed as an angle lever. That is, the tightening claw has a clamp arm that can be abutted against the inner wall of the winding tube, and a power arm that can be spring loaded by a switching / guide sleeve or a switching / guide plunger. On the end side of the power arm, a swivel support part is arranged, and via this swivel support part, the tightening claw is supported by a corresponding support edge provided on the housing of the insertion mandrel in the assembled state. . The arrangement on the end side of the swivel bearing, combined with the relatively large inward action point provided on the force introduction means, results in a relatively long power arm, which is sufficient for the clamping arm relative to the inner wall of the winding tube. High clamping force, and thus positive positioning of the yarn feeding bobbin during the rewinding process, is felt positive.

  In a further advantageous configuration of the invention, the power arm of the clamping claw has a switching projection as defined in claim 7, which switching projection is provided on the switching / guide sleeve or the switching / guide plunger. Engage in the corresponding switching contour provided. The corresponding switching contour provided on the switching / guide sleeve or switching / guide plunger always adjusts all the tightening claws of the tightening claw group uniformly, so that the position of the winding tube fixed to the insertion mandrel of the yarn feeding bobbin Concentric positioning is automatically guaranteed.

  Insertion by means of a mechanically relatively simple but reliable actuator mechanism or actuating mechanism by means of a connection hole (claim 8) arranged on the switching and guiding plunger, preferably formed as a long hole The mandrel can be operated. An actuating mechanism that can be controlled as defined in this way, for example a cam disk drive connected to the switching and guiding plunger via a control linkage, has individual clamping claws for receiving new yarn feeding bobbins. In addition to causing binding, the insertion mandrel is also swung between the yarn feeding bobbin receiving position and the rewinding position.

  According to the configuration of the switching / guide plunger or the switching / guide sleeve according to claim 9, the clamp arm of the upper tightening claw group and the clamp arm of the lower tightening claw group are generated based on different lengths. Different turning distances of the tightening claw group are compensated. That is, when the switching / guide plunger is operated, first, the tightening claw of the lower tightening claw group starts inward turning. As soon as the contact / edge of the switching / guide plunger is mounted on the collar provided on the switching / guide sleeve and the switching / guide sleeve is taken, the tightening claw of the upper tightening claw group follows.

  As described in claim 10, both the switching / guide sleeve and the switching / guide plunger have a switching contour for operating the tightening claw and have a slit guide above the switching contour. In this slit guide, the tightening claw slides with relatively little play. In this way, the catch due to the tilting of the tightening claw during the turning process is effectively prevented.

  In the following, the best mode for carrying out the present invention will be described in detail with reference to the drawings.

  In the drawings, an insertion mandrel (Aufsteckdorn) according to the present invention will be described by taking as an example an automatic traverse winder having a working part equipped with a turret-type “rotary magazine (Rundmagazin)”. However, the use of the insertion mandrel according to the invention is of course not limited to such use cases.

  In FIG. 1, an automatic traverse winder 1 is shown in a perspective view. This automatic traverse winder 1 has a large number of working sections arranged in a line as a general purpose, that is, a large number of yarn winding sections 2 in this case. Each of these working sections or yarn winding sections 2 has a turret type rotary magazine 3 for accommodating the spinning cup 4.

  If necessary, the spinning cup 4 stored in the rotary magazine 3 is passed through, for example, a cup chute 5 comprising a cup-shaped cup passage, a pivotable chute flap, and a centering flap that is also movably supported. Then, it is transferred to the insertion mandrel 6 positioned at the insertion position I (see FIG. 2). This insertion mandrel 6 continues to rotate the spinning cup 4 to the feeding position II (see FIG. 2). At the feeding position II, the spinning cup 4 is rewound into the large volume traverse package 7.

  The drawn-out empty tube 8 is continuously carried out by the ejector 27 to the empty tube transfer device 9 circulating in the transfer direction T through the opened chute flap. In the present embodiment, the ascending conveyor 10 is followed by the empty tube transfer device 9. The ascending conveyor 10 conveys the empty tube 8 into a transportable container (not shown). The transportable container then returns the empty tube 8 to the ring spinning machine, in which the spinning tube is wound around the empty tube 8 again.

  As shown in FIG. 2, each of the work units 2 known per se of the automatic winding winder 1 has a separate yarn handling device or yarn processing device in addition to the rotary magazine 3 for storing the spinning cup 4. Have. 2 further includes, for example, a winding device 11 for winding the traverse package 7, an electronic slab catcher 12 for detecting and removing a yarn defect, and a yarn end portion. A splicing device 13 for connecting the yarn tensioner 30 and the yarn tensioner 30. As is well known, the splicing device 13 is supplied with both yarn ends to be joined via a suction nozzle 14 and a gripper tube 15. Since the structure and function of the working unit or the yarn winding unit 2 are generally known, further detailed description is omitted.

  The spinning cup 4 stored in the rotary magazine 3 is delivered to the insertion mandrel 6 via a cup chute 5 having a cup-shaped cup passage formed by, for example, a chute flap and a centering flap. The insertion mandrel 6 can pivot between a front insertion position I and a rear feeding position II. In the range of the insertion mandrel 6, an ejector 27 that can be controlled separately is generally further arranged.

  3 and 4 show in detail the insertion mandrel 6 according to the invention. 3 shows the insertion mandrel 6 with the tightening claws 16 and 26 retracted, and FIG. 4 shows the insertion mandrel 6 with the tightening claws 16 and 26 positioned at the clamping position. Is shown.

  The insertion mandrel 6 has a housing 17. The housing 17 is closed upward by a cover element 18. This cover element 18 has a central opening for the clamping claws 16, 26, a bearing part 50 for the pivoting / supporting shaft 51 of the insertion mandrel 6 and a slit for the pivoting bearing part 35 of the clamping claws 16, 26. It has a guide 36 and a support edge 52 for positioning the spinning cup 4. The lower area of the housing 17 has a tubular guide device 20 in which the switching / guide plunger 21 loaded by the coil spring 23 slides. An operation mechanism 40 is further connected to the switching / guide plunger 21.

  A switching / guide sleeve 22 is also slidably disposed in the housing 17. The switching / guide sleeve 22 is loaded by a coil spring 24. The coil spring 23 that loads the switching / guide plunger 21 and surrounds the guide device 20 has a smaller diameter than the coil spring 24. The outer diameter of the coil spring 24 is adjusted according to the inner diameter of the switching / guide sleeve 22.

  As shown in FIGS. 3 and 4, the tightening claw 16; 26 is supported by a support edge 28 provided on the housing 17 via a pivot fulcrum 25. The tightening claws 16, 26 themselves are formed as angle levers as shown in FIGS. In other words, the tightening claws 16 and 26 each have a clamp arm 29 and a power arm 31. A swivel support 35 is disposed on the end side of the power arm 31, and the swivel support 35 is incorporated in the slit guide 36 provided in the cover element 18 with the tightening claws 16 and 26 incorporated therein. Slide. The power arms 31 of the tightening claws 16 and 26 further have a switching protrusion 37. The switching projection 37 cooperates with a corresponding switching contour 38 provided on the switching / guide plunger 21 or the switching / guide sleeve 22 in operation.

  The switching / guide plunger 21 or the switching / guide sleeve 22 is shown in detail in FIG. As can be seen from FIG. 6, the switching / guide plunger 21 mainly comprises a cylindrical base body 45 and a switching head 41. The base body 45 is slidably guided in a tubular guide device 20 provided in the housing 17. The cylindrical base body 45 further has a guide provided portion 47 below the switching head 41. The guiding portion 47 forms the stopper 46 at the same time as guiding the coil spring 23. The stopper 46 is mounted on a tubular guide device 20 provided in the housing 17 in a state where the switching / guide plunger 21 is retracted. The switching / guide plunger 21 has a slit guide 44 in the range of the switching head 41. In these slit guides 44, switching contours 38 are respectively arranged. These switching contours 38 are gripped from below by a switching projection 37 disposed in the range of the power arm 31 of the tightening claw 26 in the state in which the tightening claw 26 is assembled. The lower surface of the switching head 41 further forms a stopper edge 42. The stopper edge 42 cooperates with a collar 43 provided on the switching / guide sleeve 22 when the switching / guide plunger 21 is retracted.

  The switching / guide sleeve 22 integrally formed from a single portion shown in FIG. 5 has a switching body portion 49 stepped substantially inward in addition to the slide body portion 48. That is, a step portion is formed between the slide body portion 48 and the switching body portion 49, and the coil spring 24 disposed inside the slide body portion 48 acts on this step portion. As seen in plan view, the transition from the slide body portion 48 to the small diameter switching body portion 49 forms a collar 43 which, as already explained above, is used to switch the switching / guide plunger 21. A stopper edge 42 provided on the head 41 is mounted when the tightening claws 16 and 26 are retracted. That is, when the switching / guide plunger 21 is loaded by the operating mechanism 40, the switching head 41 is advanced to a certain sliding distance, and thereafter is mounted on the collar 43 of the switching / guide sleeve 22 by the stopper edge 42. The switching / guide sleeve 22 is taken along. Thus, first, the tightening claw 26 of the lower tightening claw group 34 is loaded in the “retraction” direction, and then the tightening claw 16 of the upper tightening claw group 33 is also pulled together.

  The switching body portion 49 of the switching / guide sleeve 22 has a slit guide 44 with a switching contour 38, similar to the switching head 41 of the switching / guide plunger 21. In these slit guides 44, the power arm 31 of the tightening claw 16 slides, and at this time, the tightening claw 16 is prevented from being caught. That is, the switching projection 37 provided on the power arm 31 of the tightening claw 16 grips the switching contour 38 of the switching / guide sleeve 22 from below.

The insertion mandrel according to the invention operates as follows:
The spinning cup 4 positioned on the insertion mandrel 6 has been unwound or the yarn is torn below the knifed slit of the electronic slab catcher 12, so that dynamic and static yarn signals no longer occur. When there is no longer any item, the yarn winding unit computer of the yarn winding unit 2, which is the working unit, automatically starts cup replacement. That is, the insertion mandrel 6 is first turned from the feeding position II to the insertion position I by the operating mechanism 40. During this turning movement, the switching / guide plunger 21 is moved downward, and at this time, the switching / guide sleeve 22 is also carried together. The tightening claws 16 and 26 are pulled to the positions shown in FIG. 3 by both components that slide downward against the pressing force of the coil springs 23 and 24, that is, the switching / guide plunger 21 and the switching / guide sleeve 22. At this position, the empty tube 8 is extracted from the insertion mandrel 6 by the ejector 27 and carried out to the empty tube transfer device 9.

  Subsequently, a new spinning cup 4 is called from the rotary magazine 3. The new spinning cup 4 is placed over the insertion mandrel 6 positioned at the insertion position I via the cup chute 5. The fastening claws 16 and 26 of the insertion mandrel 6 are still drawn. A new spinning cup 4 is mounted on the support edge 52. Subsequently, the insertion mandrel 6 is pivoted to the feeding position II by a lever mechanism controlled via an operating mechanism 40, for example, a cam disk, together with a new spinning cup 4. During this turning, the switching / guide sleeve 22 and the switching / guide plunger 21 are slid upward under the pressing force of the coil springs 23, 24, so that the tightening claws 16, 26 are applied to the inner wall of the new spinning cup 4. It is done.

  Since the switching / guide sleeve 22 and the switching / guide plunger 21 are functionally separated at least in a critical range of the adjustment path, the tightening claw groups 33 and 34 are also applied to the inner wall of the spinning cup 4 separately from each other. Thus, the position of the spinning cup 4 is securely fixed. The tightening claw groups 33, 34 acting on the winding tube of the spinning cup 4 at different heights further guarantee in this case the prescribed position adjustment or orientation adjustment of the fixed spinning cup 4.

FIG. 2 is a perspective view showing an automatic traverse winder having a number of working parts each having one rotary magazine and an insertion mandrel according to the present invention disposed below the rotary magazine. It is a side view which shows the working part of the automatic traverse winder provided with the rotary magazine, the cup chute, and the insertion mandrel according to the present invention. It is sectional drawing which shows the insertion mandrel by this invention in the spinning cup receiving position, ie, the state which the tightening claw was drawn in. FIG. 4 is a cross-sectional view showing the insertion mandrel shown in FIG. 3 in a state in which a tightening claw is pulled out. It is a perspective view of a switching and guide sleeve. It is a perspective view of a switching and guide plunger. It is the schematic which shows the fastening claw of an upper fastening claw group independently. It is the schematic which shows independently the fastening claw of a lower fastening claw group.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Automatic traverse winder 2 Thread winding part 3 Rotary magazine 4 Spinning cup 5 Cup chute 6 Insertion mandrel 7 Traverse winding package 8 Empty pipe 9 Empty pipe conveyance apparatus 10 Lifting conveyor 11 Winding apparatus 12 Slab catcher 13 Splicing apparatus 14 Suction Nozzle 15 Gripper pipe 16 Tightening claw 17 Housing 18 Cover element 20 Guide device 21 Switching / guide tappet 22 Switching / guide sleeve 23 Coil spring 24 Coil spring 25 Turning fulcrum 26 Tightening claw 27 Ejector 28 Bearing edge 29 Clamp arm 30 Thread tensioner 31 Power arms 33, 34 Tightening claw group 35 Rotating support portion 36 Slit guide 37 Switching projection 38 Switching contour 40 Actuating mechanism 41 Switching head 42 Stopper edge 43 Brim 44 Slit guide 5 the base body 46 the stopper 47 guide attachment portion 48 slide body portion 49 switching body portion 50 bearing 51 pivot-bearing shaft 52 supporting edge I inserted position II extended position

Claims (10)

  An insertion mandrel used in a working portion of an automatic traverse winder, the insertion mandrel having a tightening device that engages in a winding tube of a yarn feeding bobbin, and the tightening device is incorporated in a housing In this type, the clamping device (32) has at least two clamping claws (33, 34) which can be applied to the inner wall of the spinning cup winding tube at different heights, 17), force introduction means (23, 24) are arranged inside, and the force introduction means (23, 24) load the tightening claw groups (33, 34) separately from each other in the direction of "tightening". Each of the tightening claws (16, 26) of the tightening claw group (33, 34) is provided with a housing (via a turning fulcrum (25) positioned outside the winding tube to be fixed to the yarn feeding bobbin. 17) is supported Characterized in that, inserted mandrel used in the working portion of an automatic winding winding winder.   The insertion mandrel according to claim 1, wherein the force introducing means for loading the tightening claw group (33, 34) is formed by a spring element.   3. Insertion mandrel according to claim 2, wherein coil springs (23, 24) acting as compression springs are used as spring elements.   The coil spring (24) positioned on the outer side loads the upper tightening claw group (33) via the switching / guide sleeve (22), and the coil spring (23) positioned on the inner side switches the switching / guide plunger (21). The insertion mandrel according to claim 3, wherein the lower tightening claw group (34) is loaded via   A clamping arm (29) in which the tightening claw (16, 26) can be abutted against the inner wall of the spinning cup winding tube, and a power arm that can be loaded by the switching / guide sleeve (22) or the switching / guide plunger (21) ( The insertion mandrel according to claim 1, wherein the insertion mandrel is formed as an angle lever.   The power arm (31) has a swivel support (35) on the end side, and the swivel support (35) is supported by a support edge (28) provided in the housing (17) in the assembled state. 6. Insertion mandrel according to claim 5, which is guided in a slit-shaped guide (36) provided in a cover element (18) for closing the housing (17).   The power arm (31) has a switching projection (37) that engages a switching profile (38) provided on the switching / guide sleeve (22) or the switching / guide plunger (21). Insertion mandrel.   The switching / guide plunger (21) has a connection hole (39) formed as a long hole, and an operation mechanism (40) that can be controlled as defined can be connected to the connection hole (39). The insertion mandrel according to claim 4, wherein   The switching and guiding plunger (21) has a switching head (41) with a stopper edge (42) cooperating with a corresponding collar (43) provided on the switching and guiding sleeve (22). The insertion mandrel according to claim 4.   The switching / guide plunger (21) and the switching / guide sleeve (22) have a slit guide (44) with a switching contour (38), and each of the clamping claw (16, The insertion mandrel according to claim 4, wherein the power arm (31) of 26) is guided.

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