EP0053090A1 - Method and apparatus for removing reeling waste from a bobbin - Google Patents

Abstract

The invention relates to a method for removing yarn residues located on packages and to a device (2oo) for carrying out the method which essentially comprises a clamping and transport device (3o) and a cutting and stripping device (7o). When the clamped winding body is transported in the direction of the arrow (4), a template (5o) which is designed in accordance with the winding body contour and is operatively connected to a scanning and actuating device (85) is carried along and scanned, and the cutting and stripping device (7o) is actuated as a result. The device (7o) comprises a support ring (8o) and two control disks (75, 75 ') which are mounted on the side and operatively connected to the device (85) and which have curved recesses arranged around the circumference and in which a holder (73) for a rotatingly driven cutting element (71) and at least two stripping members (65). The cutting element (71) and the stripping elements (65) are fed radially, in a straight line, by the pivoting movement of the control discs (75, 75 ') about the device axis (Y) and by the inevitable guidance on the two control discs.

Description

The invention relates to a method and a device for removing a yarn residue from a bobbin or the like by means of a rotatingly driven cutting element and a stripping element.

A device is known from DE-C 26 o4 199 for removing a remnant of yarn from a core, which essentially comprises a frame which is driven to move back and forth and an arm which is pivotably mounted on the frame at one end. At the other end of the arm is a rotating driven cutting disc and a holder

provided for a sensor corresponding to the cutting disc, which is mounted in the holder in a resilient, axially displaceable manner. With this device, the frame is moved back and forth along the sleeve together with the arm, the cutting disc and the feeler, the feeler follows the outline of the sleeve and lifts the yarn residue on the sleeve from the sleeve, which is then cut from the cutting disc.

This known device has a limited area of application and is not suitable, for example, for modern, synthetic yarns. When cleaning sleeve bodies with different surface properties, such as with a grooved or perforated surface, there is the possibility possibility that the probe engages in the surface structure and gets stuck, which can destroy either the surface or the entire sleeve.

DE-A 25 57 158 also discloses a method for removing yarn residues from yarn carriers and a correspondingly designed device for carrying out the method. In this method, the yarn carrier is guided in the axial direction through a device provided with scraper rings; here, the yarn residues are pushed to the rear end of the yarn carrier by a rubbing contact and removed from the yarn carrier in two successive cutting processes - rough cut and subsequent fine cut.

The invention is concerned with the removal of a yarn residue from a bobbin or the like, and indeed the object on which the invention is based is to avoid the disadvantages of the prior art and to develop a method and to create a device by means of which , regardless of the shape, surface quality and material of the winding body and regardless of the type and amount of yarn, a perfect removal of the rest of the yarn from the winding body is achieved without damaging the surface of the winding body.

The inventive method is characterized in that for the cutting and stripping the Schneidele-, _j scraping element and at least zweiYdem fixed winding body substantially by scanning one of the winding body contour appropriately trained template supplied in the radial direction and then returned to the starting position.

The device according to the invention for carrying out the above-mentioned method is characterized in that the clamping and transport device essentially comprises a first, displaceably mounted and designed for the attachment of a template and a first clamping element, a stationary and spaced apart and for the attachment of the cutting and stripping device-formed second carrier, and a third, slidably mounted and designed for the attachment of a second clamping element carrier, wherein the first carrier by a first piston / cylinder unit and the third carrier by a second piston / Cylinder unit are slidably mounted on the horizontal axis of the device with respect to the cutting and stripping device.

Further features of the invention will become apparent from the following description in connection with the embodiment shown in the drawing and the claims.

• Fig. 1 eine Gesamtdraufsicht auf eine aus mehreren Einzelvorrichtungen bestehende, schematisch dargestellte Einrichtung zum Entfernen von auf Wickelkörpern befindlichen Garnrückständen,
• Fig. 2 ein Teilstück einer Aufspann- und Transportvorrichtung für die Einrichtung gemäss Fig.l mit der Aufspannphase des Wickelkörpers,
• Fig. 3 das Teilstück der Vorrichtung gemäss Fig.2 mit der Transportphase,
• Fig. 4 das Teilstück der Vorrichtung gemäss Fig.2 und F_ig.3 mit der Schneid- und Abstreifphase,
• Fig. 5 eine in grösserem Massstab dargestellte Schnittansicht gemäss der Linie V - V in Fig.l mit einer Schneid- und Abstreifvorrichtung,
• Fig. 6 die Schneid- und Abstreifvorrichtung gemäss Fig. 5 in der Draufsicht,
• Fig. 7 eine Schnittansicht gemäss der Linie VII - VII in Fig.l mit dem Teilstück eines ersten Trägers,
• Fig. 8 einen in Schnittansicht gemäss der Linie VIII - VIII in Fig.6 dargestellten Lagerbock, und
• Fig. 9 einen in grösserem Masss tab und im Schnitt gemäss der Linie IX - IX in Fig. 2 dargestellten Spannkonus für den aufzuspannenden Wickelkörper.

The invention is described below using an exemplary embodiment with reference to the drawing. It shows:

• 1 is an overall plan view of a device, consisting of several individual devices, shown schematically for removing yarn residues located on packages,
• 2 shows a section of a clamping and transport device for the device according to FIG. 1 with the clamping phase of the winding body,
• 3 shows the section of the device according to FIG. 2 with the transport phase,
• Fig. 4, the portion of the device of Figures 2 and F _i g.3 with the cutting and stripping phase,
• 5 is a sectional view on a larger scale along the line V - V in Fig.l with a cutting and stripping device,
• 6 is a top view of the cutting and stripping device according to FIG. 5,
• 7 is a sectional view along the line VII - VII in Fig.l with the portion of a first carrier,
• 8 shows a bearing block shown in a sectional view along the line VIII-VIII in FIG. 6, and
• FIG. 9 shows a clamping cone for the winding body to be clamped, shown to a larger extent and in section along the line IX-IX in FIG. 2.

In Fig.l a device 2oo is shown in a schematically illustrated overall plan view for removing yarn residues located on bobbins or the like. The actuated by a control and operating console 19o 2oo device essentially comprises a first transport device lo, a pickup 2 _0, a lifting device 25, a clamping and transport device 3 _0, as well as a cutting and stripping device 7o. The ahead mentioned devices are described in more detail below.

The transport device 10, which is preferably clad at the end face by a cover 98, is arranged in a first frame part 95 formed from two supports 96, 97 arranged in parallel to one another and comprises a first guide rail 11, a second guide rail 12 and drivers 13 arranged at a distance from one another, which are not shown in FIG are shown in more detail with a conveyor belt 14 driven in the direction of arrow 2 by means not shown. For the transport of winding bodies of different lengths, the second guide rail 12 can be adjusted in the direction of the arrow 3 by means of a screw spindle 16, which is shown schematically and is mounted in the frame part 95, by turning a handwheel 15. The required distance between the two guide rails 11 and 12 is to be adjusted to the length of the winding body to be cleaned. As shown in Fig.l, the pre-sorted winding body 1 _a , 1 _b , 1 _c , 1 _d and 1 _e placed on the conveyor belt 14 are transported step by step in the direction of arrow 2 and fed to the scanning device.

The scanning device 2o essentially consists of a carrier 21 and two spaced-apart sensing elements 22 and 23 on the side facing the winding body, which can be fed to the winding body in the scanning position in a manner not shown. The feeler 23 is fixed to the carrier, while the feeler 22 is adjustable according to the guide rail 12 with means not shown in the direction of arrow 3.

The device 25, which schematically shows the individually supplied winding body in a clamping position, comprises two gripper elements 26, 26 'which are arranged at a distance from one another and are connected to one another by a carrier 28. The carrier 28 is preferably designed such that the one gripper element 26 can be adjusted in the direction of the arrow 3 in accordance with the assigned feeler element 22 of the device 20 and the guide rail 12 of the device 10. The gripper elements 26, 26 'can be raised and / or lowered by means of a lifting cylinder 27 arranged on the carrier 28 in a manner not shown in a predetermined position for the clamping and transport process of the winding body.

The clamping and transport device 3o schematically shown in Fig.l is ', 93,94 and 94' formed frame part 9 ₀ arranged in a second, of longitudinal and cross beams 92,92 and can be seen in spaced apart guides 31,32, 33 and 34, and a first movable support 35, a stationary second carrier 4 _0, a bearing block 45, a third sliding support 55 and 4o disposed on the support cutting and stripping device 7o. The guides 31, 32, 33 and 34, which are arranged parallel to one another and serve as supporting and guiding members for the parts 35, 40, 45 and 55, are made from profiled steel, preferably from round steel, and by means not shown in detail mounted and fastened to the cross members 94 and 94 'of the second frame part 9o. Furthermore, one can see a connecting element 38 fastened to the carrier 35 and to the bearing block 45, a first piston / cylinder unit 100, 110, which is operatively connected to the first carrier 35, and a second piston / cylinder unit 110, 111 which is operatively connected to the third carrier 55. The element 38 connecting the carrier 35 to the bearing block 45 serves to support and detachably fasten a template 5 ₀ , which is designed on one side to match the contour of the winding body, and is explained in more detail in the work description.

Figures 2, 3 and 4 show the different phases of the clamping and transport device 3o with the respective positions of the individual organs and elements. In the position according to FIG. 2, the winding body 1 _a held by the gripper elements 26, 26 'is shown in the clamping position, in which the first carrier 35 and the bearing block 45, which is operatively connected to the carrier by the element 38, by means of the pistons / cylinders -Unit loo, lol in the direction of arrow 5 and also the carrier 55 is transported by means of the piston / cylinder unit llo, lll in the direction of arrow 6.

In the position according to FIG. 3, in which the gripper elements are disengaged and no longer shown, the winding body is on one side by a first clamping cone 61 arranged on the carrier 35 and on the other side by a second clamping cone 63 arranged on the carrier 55 fixed. The cone 61 is arranged in a on the carrier 35 Bracket 60 and the cone 63 can be inserted into a bracket 62 arranged on the carrier 55 and fastened interchangeably by means not shown.

4 shows the phase in which the clamped winding body has partially passed through the cutting and stripping device and the cut yarn residues have already been drawn off by a device, not shown.

5 shows a sectional view on a larger scale along the line V - V in FIG. 1 and in FIG. 6 a top view of the cutting and stripping device 7o, which will be described below.

The carrier 40 is provided with bores for the guides 32 and 33, which are not designated in any more detail, and has on one side a bearing block 41 with a further bore for the guide 34. The carrier 4o is fixedly mounted on the guides mentioned by means not shown. On the other hand, two brackets 43, 43 'arranged in mirror image symmetry to one another and at a distance from it a flange 42 for fastening the piston / cylinder unit 100, 100 are provided on the carrier 40. Another carrier member 48 is correspondingly assigned to the carrier 40 and is mounted in a stationary manner on the guide 31. The carrier member 48 is also provided with two tabs 49, 49 ′ arranged symmetrically with respect to one another. On the tabs 43, 43 'of the support 40 and on the tabs 49, 49' of the support member 48, a support ring 8 ₀ is fastened by means not shown. On the inside 82 of the support ring 8o are evenly Arranged circumferentially distributed bearing elements 81, in each of which a wiping member 65 is arranged, which is radially displaceable in the direction of arrow 7. At this point, it should be pointed out that the bearing elements 81 and the stripping members 65 arranged on the support ring 80 are preferably of the same design and are identified only once with a reference number for a better overview.

Two spaced-apart control disks 75, 75 'are mounted on the support ring 8o, in which curved recesses 76, 76' and 78, 78 ', which are evenly distributed around the circumference, are arranged for the storage of a roller 77 which is operatively connected to the respective stripping element 65 are. Between the two upper recesses 78, 78 'there is a further recess 74 for the mounting of a cutter head holding device 73, 72, 71. A lever 84, 84 'is arranged on each side of the two control disks 75, 75' and is movably mounted by means of a bolt 83 secured by means not designated by means. Arranged at the other end of the levers 84, 84 'is a schematically illustrated scanning and actuating device 85, which essentially comprises a touch valve 86 with a touch element 87 and a piston / cylinder unit 88, 89. The feeler element 87 is movably supported in the feeler valve 86 in a manner not shown and is pressed against the control edges 52, 51 of the template 5o by the restoring force of a spring, not shown, as shown in FIGS. The piston 89 of the cylinder 88, which is preferably provided with a fastening tab, is supported on one in the bearing 44 of the cylinder gers 4o arranged and secured with unspecified means bolt 39. The piston / cylinder unit 88, 89 is actuated by the scanning valve 86 and, by means of the levers 84, 84 'attached to the control disks 75, 75', causes the two control disks to move in the direction of the arrow 8.

As shown in the top view according to FIG. 6, two further stripping members 66, 67 are provided at a distance from the supporting ring 8o, one stripping member 66 being arranged in a holder 46 of the carrier 4o and the other stripping member 67 in a holder 47 of the carrier member 48 are. The wiping elements 66 and 67 are each actuated by a correspondingly assigned piston / cylinder unit 112, 113 and 114, 115, respectively, which is fastened to the carrier 40 or to the carrier element 48 in a manner not shown.

In Fig. 7, a portion of the first carrier 35 is shown on a larger scale and you can see the piston lol stored in a bore, the guide 33 and a bearing block 35 'provided with a support 37 for the connecting rail 38 and preferably molded onto the carrier 35. The carrier 35, which is not provided with bore holes, is supported on the guides 31, 32, 33 and 34 and can be displaced in the horizontal plane by means of the piston / cylinder unit 100, 100 as indicated in FIG. 1 with the direction of the arrow 4,4 '. Furthermore, one can see the template 50 fastened to the connecting rail by means not shown. FIG. 8 also shows the bearing block 45 on a larger scale with the guides 33, 34 and a further support 36 for the guide rail 38 carrying the template 50.

The operation of the device described is described below:

The winding bodies 1 _a to 1 _e placed on, for example, fork-shaped carriers 13 are transported from the conveyor belt 14 in the direction of the arrow 2 as shown in FIG. 1 _and fed to the scanning device 20. As soon as the first winding body has reached the scanning device, the conveyor belt is stopped by a first pulse and the sensing elements 22, 23 are fed to the winding body by a second pulse, which, in the correct position - is required in the illustrated embodiment of the device 2oo, in the case of a cone-shaped winding body to place the small diameter, as shown in FIG. 1, on the left-hand side on the conveyor belt - is fed to the lifting device 25 by a further pulse actuating the conveyor belt. The winding body lying on the gripper elements 26, 26 'is now brought into a clamping and transport position by means of the device 25.

2 shows the clamping phase in which the carrier 35 with the first clamping cone 61 through the piston / cylinder unit 100, 10 in the arrow direction 5 and the carrier 55 with the second clamping cone 63 through the piston / cylinder unit llo, lll is moved in the direction of arrow 6. When moving in the direction of arrow 5, as can be seen from FIGS. 3 and 4, the one that is operatively connected to the carrier 35 and the bearing block 45 by the connecting rail 38 is simultaneously shown Template 50 with the control edges 52, 51 is guided past the sensing element 87 in contact. Due to the shape of the control edge 51 adapted to the winding body, the touch valve 86 and consequently the two levers 84, 84 ', which are operatively connected to the control disks 75, 75' of the cutting and stripping device, are actuated.

The operation and mode of operation of the cutting and stripping device 7o is now described with reference to FIG and with the direction of the arrow 8 'designated swivel-rotary movement of the two control disks 75, 75' mounted on the support ring 8o. As a result of the interaction of the control disks with the cutter head holding device 73, which is fastened to the support ring 8o by means not shown and is partially shown in section, which is mounted in the curved recess 74 with a roller 73 'rotatably mounted on a tappet 73' and inevitably guided. the pivoting-rotary movement of the control disks achieves a straight-line feed movement, indicated by arrow direction 9 and directed radially to the axis Y, of the knife 71 mounted on the cutter head 72 and rotatingly driven by means (not shown) Bearing 81 of the support ring 80, partially shown in section, arranged scraping members 65 which are rotatably mounted on a plunger 77 ' Are mounted 77 "in the curved recess 76,76 'or 78, 78' role and positively guided radially fed rectilinearly in the arrow direction 7 and thus the guided through the V _o rrich- tung 7o winding body. In this process, also the pan Rotary movement of the control disks 75, 75 'is converted by the inevitable guidance of the rollers 77 "into the feed movement indicated by arrow direction 7.

The transport movement of the clamped winding body to the cutting and stripping device 7o as well as the feeding movement of the knife 71 and also the feeding movement of the stripping members 65 to the winding body are achieved by the interaction of the individual devices and elements described above with reference to FIGS. 1 to 8. The thread remnants cut by the knife 71 and removed or stripped by the stripping members 65 from the winding body are drawn off by a suction device (not shown) into a mobile material container which is preferably arranged outside the device 2oo.

When the carriers 35 and 55 are transported back with the tensioning cones 61 and 63 into the starting position, the cleaned winding body, which has been freed of yarn residues, is released by the two tensioning cones and falls onto a conveyor belt, not shown, from which the winding body is fed to a collecting container, not shown.

The yarn residues that may be pushed onto the first tensioning cone 61 during the cutting and stripping process are removed by the stripping element 66 arranged on the carrier 40 and removed from the stripping element 67 arranged on the carrier element 48. In FIG. 9, the clamping cone 61 provided with slots 64, 64 'is shown as a detail in a sectional view, and one can see the stripping member 66 arranged on the carrier 40 and the stripping member 67 arranged on the carrier member 48, which are assigned to the slots accordingly. When the carrier 35 of the device 30 is returned to the starting position, the stripping elements of the stripping members 66 and 67 are inserted into the slots 64, 64 'provided on the tensioning cone 61 by the associated piston / cylinder units 112, 113 and 114, 115, as a result of which the tensioning cone 61 deferred yarn residues are captured, stripped and sucked off by the suction device already mentioned.

Due to the special arrangement and design of the individual devices, but in particular by the cooperation of the clamping and transport device 3o with the actuated essentially from the template 5o cutting and scraping device 7 _0, a precisely controlled cutting and stripping operation is to be cut to and of the remaining thread to be removed without damaging the surface of the package.

Tests have shown that with the device described, 200 winding bodies with different surface structures - for example smooth, grooved, nubbed, penetrated by recesses of different shapes, and also winding bodies with different designs End pieces - can be cleaned properly and without damage without special effort. Also for bobbins made of different materials - e.g. cardboard, cardboard, plastic, wood, etc. - A perfect cutting and stripping process is guaranteed.

Claims (14)

L. Method for removing a yarn residue from a winding body or the like by means of a rotatingly driven cutting element and a stripping element, characterized in that the cutting element (71) and at least two stripping elements (65) the fixed winding body essentially by scanning for the cutting and stripping process one in the radial direction is supplied to a template (5 ₀ ) designed in accordance with the winding body contour and then returned to the starting position. 2. The method according to claim 1, characterized in that the on a device axis (Y) between two axially feedable clamping elements (61,63) fixed winding body in the horizontal plane of a cutting and stripping device (7 ₀ ) and corresponding to the substantially parallel to Coil-oriented template (5o) is fed to a scanning and actuating device (85) that is operatively connected to the cutting and stripping device. 3. The method according to claim 1 and 2, characterized in that the yarn residues located on the winding body are cut in one operation by the radially, continuously feedable cutting element (71) and by the radially, continuously feedable stripping members (65) of the cutting and stripping device ( 7 ₀ ) completely from that Removed winding body and sucked off by a suction device. 4. The method according to any one of claims 1 to 3, characterized in that the yarn residues pushed onto the first tensioning cone (61) during the cutting and stripping process are removed from two further stripping members (66, 67) actuated when the tensioning cones are transported back and are then drawn off . 5. Device for performing the method according to one of claims 1 to 4, with a clamping and transport device and a cutting and stripping device, characterized in that the clamping and transport device (3 ₀ ) essentially a first, slidably mounted and for the attachment of a template ( ₅₀ ) and a first clamping element (61) designed first support (35), a stationary and spaced-apart and designed for the attachment of the cutting and stripping device (70) second support (4o), as well as a third, displaceably mounted carrier (55) designed for the attachment of a second tensioning element (63), the first carrier (35) being constituted by a first piston / cylinder unit (loo, lol) and the third carrier (55) are displaceably mounted on the horizontal device axis (Y) by means of a second piston / cylinder unit (llo, lll) in relation to the cutting and stripping device (70) (FIG. 1). 6. Device according to claim 5, characterized in that the first carrier (35) of the clamping and transport device (3 ₀ ) is operatively connected to a bearing block (45) by means of a connecting rail (38) designed as a supporting element for the template (5 ₀ ) , The first carrier (35), the bearing block (45) and the third carrier (55) being slidably mounted on guides (31, 32, 33, 34) arranged parallel to one another. 7. Device according to claim 5, characterized in that the cutting and stripping device (7o) on the second carrier (4o) and on a stationary support member (48) attached support ring (8o), on which in the direction of the device axis (Y) seen laterally, two control disks (75, 75 ') arranged parallel to each other are arranged (Fig. 5, 6). 8. Device according to claims 5 and 7, characterized in that the control disks (75, 75 ') of the device (70) in a specific region about the device axis (Y) pivotally mounted on the support ring (8 ₀ ) and by articulated levers ( 74, 74 ') are operatively connected to a scanning and actuating device (85) contacting the template. 9. Device according to claims 7 and 8, characterized in that the control discs (75, 75 ') with a first, curved recess (74) for the storage and guidance of a cutter head holder (73) and further, evenly distributed on the circumference, curved recesses (76,76 ') and (78,78') are provided for the storage and guidance of stripping members (65). lo. Device according to claims 5 and 7 to 9, characterized in that for the rectilinear, radial feed movement of a cutting element (71), the holder (73) fastened to the support ring (80) with a roller rotatably mounted on a tappet (73 ') 73 ") is guided in the recess (74). 11. Device according to claims 5 and 7 to lo, characterized in that for the rectilinear, radial feed movement of the individual stripping member (65) each in a bearing element (81) of the support ring (8 ₀ ) axially guided plunger (77 ') with a roller (77) rotatably mounted on the tappet is guided in the recess (76 '). 12. Device according to one of the preceding claims, characterized in that on the fixed support (4 ₀₎ and the fixed support member (48) each show a further wiping member (66,67) is arranged. 13. Device according to one of the preceding claims, characterized in that the first clamping element (61) corresponding to the two stripping members (66,67) has ordered and extending in the axial direction longitudinal slots (64,64 ') (Fig.9). 14. Device according to one of the preceding claims, characterized in that in the region of the cutting and stripping device (7 ₀ ) is arranged a suction device which removes the yarn remnants removed from the winding body into a collecting container arranged outside the device (2 ₀₀ ).

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