WO2023041329A1 - Thread-splicing device for a workstation of a textile machine producing cross-wound bobbins - Google Patents
Thread-splicing device for a workstation of a textile machine producing cross-wound bobbins Download PDFInfo
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- WO2023041329A1 WO2023041329A1 PCT/EP2022/074264 EP2022074264W WO2023041329A1 WO 2023041329 A1 WO2023041329 A1 WO 2023041329A1 EP 2022074264 W EP2022074264 W EP 2022074264W WO 2023041329 A1 WO2023041329 A1 WO 2023041329A1
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- Prior art keywords
- thread
- splicing
- splicing device
- disruptive
- prism
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H69/00—Methods of, or devices for, interconnecting successive lengths of material; Knot-tying devices ;Control of the correct working of the interconnecting device
- B65H69/06—Methods of, or devices for, interconnecting successive lengths of material; Knot-tying devices ;Control of the correct working of the interconnecting device by splicing
- B65H69/061—Methods of, or devices for, interconnecting successive lengths of material; Knot-tying devices ;Control of the correct working of the interconnecting device by splicing using pneumatic means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H69/00—Methods of, or devices for, interconnecting successive lengths of material; Knot-tying devices ;Control of the correct working of the interconnecting device
- B65H69/06—Methods of, or devices for, interconnecting successive lengths of material; Knot-tying devices ;Control of the correct working of the interconnecting device by splicing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H57/00—Guides for filamentary materials; Supports therefor
- B65H57/24—Guides for filamentary materials; Supports therefor with wear-resistant surfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2401/00—Materials used for the handling apparatus or parts thereof; Properties thereof
- B65H2401/10—Materials
- B65H2401/12—Ceramics
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2401/00—Materials used for the handling apparatus or parts thereof; Properties thereof
- B65H2401/10—Materials
- B65H2401/15—Metals
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2401/00—Materials used for the handling apparatus or parts thereof; Properties thereof
- B65H2401/20—Physical properties, e.g. lubricity
- B65H2401/23—Strength of materials, e.g. Young's modulus or tensile strength
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/30—Handled filamentary material
- B65H2701/31—Textiles threads or artificial strands of filaments
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H54/00—Winding, coiling, or depositing filamentary material
- B65H54/02—Winding and traversing material on to reels, bobbins, tubes, or like package cores or formers
- B65H54/06—Winding and traversing material on to reels, bobbins, tubes, or like package cores or formers for making cross-wound packages
Definitions
- Thread splicing device for a work station of a textile machine producing cross-wound bobbins
- the invention relates to a thread splicing device for a workstation of a textile machine producing cross-wound bobbins, which has a splicing prism with a splicing channel that can be actuated pneumatically and thread guide plates arranged on both sides of the splicing channel and is equipped with thread locking devices.
- Thread splicing devices designed in this way for pneumatically connecting two thread ends have long been known in connection with the work stations of textile machines producing cross-wound bobbins, for example cross-winding machines, and are described in detail in numerous patent specifications.
- such thread splicing devices In addition to a splicing prism, which is arranged on a so-called air distribution block and equipped with thread guide plates, such thread splicing devices usually have thread locking and cutting devices and holding and opening tubes for preparing the thread ends to be spliced.
- thread splicing devices of this type two thread ends that have arisen, for example, as a result of a thread breakage or a controlled clearing cut, can be pneumatically connected in such a way that there is a connection point that is almost identical to the thread.
- the upper thread that has run onto the surface of a cheese is picked up by a suction nozzle and placed in the splicing channel of the splicing prism of the thread splicing device.
- the lower thread is picked up by a gripper tube from a pay-off spool positioned in an unwinding position and also inserted into the splicing channel, where the upper thread and the lower thread are then pneumatically swirled together.
- the two thread ends to be connected should first be cut to exact length and carefully prepared for the splicing process, and then positioned precisely in the splicing channel of the splicing prism.
- the known thread splicing devices have various devices, for example thread locking and thread cutting devices, holding and opening tubes and a thread feeder.
- the two thread ends are transported through the suction nozzle or the gripper tube into the area of the thread splicing device and there, guided among other things by thread guide plates that are arranged at the end of the splicing channel of the splicing prism, are threaded into the splicing channel.
- the thread ends are also positioned in associated thread locking devices and thread cutting devices.
- the yarn ends are first largely freed from their yarn twist and then pulled into the splicing channel of the splicing prism by a yarn feeder in such a way that they lie parallel to one another in the splicing channel at about the same height, but are aligned in opposite directions.
- the free thread ends the length of which depends, for example, on the thread material and/or the thread diameter, preferably project out of the splicing channel of the splicing prism on both sides.
- Compressed air blasts are then introduced into the splicing channel via one or more inlet bores opening into the splicing channel of the splicing prism, which causes the fibers of the two thread ends, which initially lie essentially parallel next to each other in the splicing channel, to be swirled, with the result that a durable thread connection is created.
- the thread guide plates which are arranged at the end of the splicing channel, also ensure that the thread ends to be spliced can be threaded into the splicing channel of the splicing prism without any problems and that the thread ends are not blown out of the splicing channel during the splicing process.
- the thread splicing devices described have in practice, especially when the Threads do not exceed a certain thread size, quite proven. However, the situation becomes more difficult when coarse yarns are being processed, ie when thread ends that have a relatively large yarn diameter are to be spliced.
- a comparable thread splicing device is also described in DE 101 24 832 A1, in which additional locking means for the cut thread ends are also arranged at the level of the holding and opening tubes.
- the locking means are designed here as vacuum-loadable screens, which are intended to ensure that the cut thread ends are fixed pneumatically during the splicing process.
- Thread splicing devices as described in DE 101 24 832 A1, however, have the disadvantage that they are not only relatively complex and therefore expensive, but also relatively high-maintenance. Thread splicing devices are also known, for example from DE-AS 1 535 828 or DE 42 26 025 C2, in which holding means are arranged directly in the area of the splicing channel, which hold the thread ends in place during the splicing process.
- the thread ends are fixed during the splicing process, for example by two spaced clamps, while the thread ends in the thread splicing device according to DE 42 26 025 C2 are fixed by a centrally arranged, cushion-like, air-permeable element.
- the object of the invention is to develop a thread splicing device that ensures that proper thread splice connections can be reliably created, particularly with coarse yarns.
- At least one disruptive element is positioned on both sides of the splicing prism in a region between the thread guide plates and the thread locking device such that the thread ends to be spliced contact the disruptive element during the splicing process.
- the embodiment according to the invention has the particular advantage that during the splicing process, the interference element resting against the thread ends reliably prevents excessive thread vibrations from occurring in the relevant area.
- the disruptive element thus has a positive effect on the integration of the thread ends, both in terms of strength and appearance.
- the disruptive element thus reliably ensures that during the splicing process Thread ends are calmed down in the area between the thread guide plates arranged on the output side of the splicing channel of the splicing prism and the thread locking devices arranged at a distance. This means that large thread oscillations are prevented from occurring, which, as is well known, would have a negative effect on both the strength and the appearance of the thread splice.
- the disruptive element is arranged on the larger of the two thread guide plates.
- the thread ends to be spliced are placed pneumatically against the disruptive element.
- the small thread guide plate is connected to the splicing prism in such a way that the exit opening of the pneumatically actuated splicing channel is partially covered, an air flow is created in the area of the exit opening that is effective in the direction of the larger thread guide plate and thus in the direction of the disruptive element, which directs the thread ends to the creates disruptive element.
- the interfering elements can be designed differently.
- the disruptive element is designed and arranged in such a way that the thread approach or thread contact surface of the disruptive element runs at right angles to the side wall of the splicing prism.
- the thread contact surface of the disruptive element is positioned relatively close to the area of the large thread guide plate.
- the disruptive element has a wall part which is equipped with a thread contact surface and is arranged at an angle with respect to the side wall of the splicing prism.
- the disruptive element may have a plurality of wall parts each equipped with a thread contact surface.
- the wall parts and thus the thread contact surfaces arranged on the wall parts can be arranged at right angles to the side wall of the splicing prism and/or have an angle with respect to the side wall of the splicing prism.
- Such disruptive elements equipped with several thread contact surfaces are very effective in terms of thread vibration suppression.
- the disruptive elements of the yarn splicing device are preferably made of an abrasion-resistant material, for example a ceramic material, or a high-strength metallic material.
- an abrasion-resistant material ensures that the interfering elements have a long service life, even under relatively heavy loads.
- the disruptive elements can either be mounted on the splicing prism in an easily exchangeable manner, for example via a screw connection, or they can be fastened to the splicing prism, for example by means of an adhesive connection, but can only be detached with relative difficulty.
- the thread contact surface of the wall parts of the disruptive elements is designed to be as straight as possible.
- the thread contact surface of the disruptive element arranged in the area where the thread ends rest can also have a recess. Such a recess leads to the thread ends being centered in the area of the contact surfaces, with the result that the thread oscillations of the thread ends are disturbed and thus suppressed to a relatively great extent.
- thread splicing device for the work station of an automatic cheese winder can also be equipped with other advantageous devices.
- thread splicing devices of this type can also have other devices, such as a cover plate equipped with locking means, a top plate equipped with locking means, or a special thread braking element. Thread splicing devices equipped in this way always ensure, even when processing coarse yarns, that the thread splice connections created are always correct, that is to say that the thread splice connections have yarn strength and a yarn-like appearance.
- FIG. 2 shows a top view of a yarn splicing device, the splicing prism of which is equipped with a disruptive element according to the invention, during the insertion of the yarn ends to be joined;
- FIG. 3 shows the thread splicing device according to FIG. 2 during the splicing process
- Fig. 4 shows a thread splicing device according to the prior art, during the
- FIG. 5 shows a first embodiment of a disruptive element according to the invention, with a recess in the area of the thread contact surface
- FIG. 6 shows a second embodiment of a disruptive element according to the invention, with a straight thread contact surface
- FIG. 7 shows a third embodiment of an interference element according to the invention, with a wall part which is arranged at an angle with respect to the side wall of the splicing prism and has a thread contact surface,
- FIG. 8 shows a further embodiment of a disruptive element according to the invention, with a plurality of wall parts each having a thread contact surface.
- FIG. 1 shows a schematic side view of a textile machine producing cross-wound bobbins, in the exemplary embodiment a so-called automatic cross-winder 1 .
- Such automatic cheese winders 1 usually have a large number of similar work stations 2 arranged next to one another in a row, in the present case so-called winding stations, on which, as is known and therefore not explained in detail, spinning cops 9 produced on a ring spinning machine, which have relatively little yarn material, are too large Cheeses 15 are rewound.
- these cross-wound bobbins 15 to Example by means of an automatically working (not shown) service unit, preferably a cheese changer, transferred to a machine-long cheese transport device 21 and transported to a machine end arranged coil loading station or the like.
- an automatically working (not shown) service unit preferably a cheese changer
- Such automatic cheese winders 1 also have a logistics device in the form of a bobbin and tube transport system 3, in which, on transport plates 8, the spinning cops 9 or unwound empty tubes circulate.
- a logistics device in the form of a bobbin and tube transport system 3, in which, on transport plates 8, the spinning cops 9 or unwound empty tubes circulate.
- the cop feed section 4 the reversingly driven storage section 5, one of the transverse transport sections 6 leading to the winding stations 2 and the tube return section 7 are shown in FIG.
- Such automatic cheese winders 1 usually have a central control unit 18, which is connected via a machine bus 35 both to the separate workstation computers 29 of the individual workstations 2 and (not shown) to a control device of the service unit.
- the spinning cops 9 delivered via the bobbin and tube transport system 3 are rewound into large-volume cross-wound bobbins 15 in unwinding positions AS, which are each located in the region of the transverse transport sections 6 at the work stations 2 .
- the individual jobs 2 are known to have various facilities that ensure proper operation of these jobs 2 .
- These devices are, for example, a suction nozzle 12 for handling the upper thread 31 , a gripper tube 25 for handling the lower thread 32 and a thread connecting device designed as a pneumatic thread splicing device 10 .
- the suction nozzle 12 and the gripper tube 25 are each connected to a machine-long suction air channel 37 via suction air connections.
- the suction nozzle 12 is mounted to a limited extent pivotable about a pivot axis 16 and the gripper tube 25 about a pivot axis 26 .
- the pneumatic yarn splicing device 10 is arranged somewhat set back with respect to the regular yarn path during normal winding operation, that is, the yarn splicing device 10 is not affected by the running yarn during normal winding operation.
- Such workstations 2 also have a winding device 24 for winding a cheese 15.
- the winding device 24 has, among other things, a creel 28 which is movably mounted about a pivot axis 13 and has a device for rotatably holding a cheese tube.
- the thread to be wound onto the cross-wound bobbin 15 comes from a spinning cop 9 which is positioned in the region of the transverse transport path 6 in an unwinding position AS.
- FIG. 2 shows a top view of a thread splicing device 10 with a disturbing element 30 designed according to the invention during the insertion of the thread ends to be spliced.
- thread locking and cutting devices 11 , 17 are arranged above and below the thread splicing device 10 .
- the upper thread locking and cutting device 11 has a thread locking device 11A for fixing a so-called upper thread 31 connected to the cross-wound bobbin 15 and presented through the suction nozzle 12, as well as a thread cutting device 11B for cutting to length a thread connected to a template spinning cop 9, so-called lower thread 32 presented by the gripper tube 25 .
- the underlying thread locking and cutting device 17 has a thread locking device 17A for fixing the lower thread 32 connected to the supply spinning cop 9 and presented through the gripper tube 25, and a thread cutting device 17B for cutting the upper thread 31 presented by the suction nozzle 12 to length
- a known thread feeder which is also arranged in the area of the thread splicing device 10 has not been shown.
- the thread splicing device 10 has an air distribution block 33 in which so-called holding and opening tubes 34 are embedded.
- a splicing prism 19 is arranged, which has a pneumatically actuable splice channel 20 has.
- the splicing prism 19 is fixed to the air distribution block 33 in an exchangeable manner, for example via a screw connection 39 .
- injection openings opening into the splicing channel 20 are connected to a pneumatic bore in the air distribution block 33, which is connected to a compressed air source via a corresponding line into which, for example, a solenoid valve is switched.
- so-called thread guide plates 22, 23 are arranged in the area of the outlet openings of the splicing channel 20 of the splicing prism 19, the thread guide plates 22 and 23 being designed differently.
- the arrangement of the small thread guide plates 22 is preferably also chosen such that the front deflection edge of the thread guide plates 22 is approximately level with the middle of the splicing channel 20 of the splicing prism 19 .
- the associated larger thread guide plates 23 each arranged on the opposite side of the outlet openings of the splicing channel 20 , each have a bend relative to the side wall 27 of the splicing prism 19 .
- a so-called disruptive element 30 according to the invention is also arranged on each of the large thread guide plates 23 .
- These interference elements 30 according to the invention can have different embodiments and can be connected to the splicing prism 19 in different ways.
- the disruptive elements 30 can be connected to the splicing prism 19 in an easily detachable and replaceable manner, for example by means of a screw connection 39, or they can be firmly connected to the splicing prism 19, for example by means of an adhesive.
- Figures 5 to 8 show some of the possible embodiments of a disruptive element 30 according to the invention.
- Figures 5 and 6 show examples of interfering elements 30 according to the invention, with an im In the installed state, wall part 41 is arranged parallel to the side wall of the splicing prism 19, but with differently designed yarn contact surfaces 36.
- the disruptive element 30 according to FIG. 6 has, for example, a substantially straight continuous yarn contact surface 36, while the disruptive element 30 shown in FIG Bulge 38 is provided. Such a bulge 38 leads to an advantageous centering of the thread ends to be spliced during the splicing process.
- the disruptive element 30 shown in FIG. 7 has a wall part 41 which is equipped with a thread approach surface 36 and which is arranged at an angle a with respect to the associated side wall 27 of the splicing prism 19 when the disruptive element 30 is installed.
- the disturbing element 30 shown in FIG. 8 has two wall parts 41 which are each equipped with a thread contact surface 36 .
- the first wall part 41 is arranged parallel to the associated side wall 27 of the splicing prism 19
- the second wall part 41 is positioned at an angle ⁇ with respect to the side wall 27 of the splicing prism 19 .
- the disruptive elements 30 described above also have, for example, a fastening bore 40 and can thus be fastened to the splicing prism 19 by means of a screw connection without any problems, easily detachable if necessary.
- the invention should expressly not be limited to the embodiments for disruptive elements 30 described above.
- the interfering elements 30 can, for example, also have more than two wall parts 41 equipped with yarn run-on surfaces 36 . It is also conceivable that the wall parts 41 are only partially formed with a thread run-on surface 36 and are at least partially hollowed out. This means that the wall part 41 has, for example, a narrow edge designed as a thread contact surface 36, while the wall part 41 is hollowed out in the area of the thread contact surface 36. Furthermore, the formation of the thread approach surface 36 could also have a different shape, for example a wavy shape.
- the lower thread 32 remains in the thread tensioner of work station 2 because the thread clearer triggered the thread clamping function of the thread tensioner due to the absence of a dynamic thread signal.
- the lower thread 32 held in the thread tensioner is then picked up by the gripper tube 25, which for this purpose is first pivoted into the area of the thread tensioner and sucks the lower thread 32 there. The thread tensioner releases the lower thread 32 at the same time.
- the gripper tube 25 pivots into an upper position indicated in FIG.
- the lower thread 32 is inserted into the splicing channel 20 of the splicing prism 19 and into the thread locking element 17A of the lower thread locking and thread cutting device 11 , 17 and the thread cutting element 11B of the upper or lower thread locking and thread cutting device 11 , 17 .
- the upper thread 31 that has accumulated on the cross-wound bobbin 15 is picked up by the suction nozzle 12 and also inserted into the splicing channel 20 of the thread splicing device 10 .
- the suction nozzle 12 threads the upper thread 31, as shown in FIG.
- the thread cutting devices 11B and 17B are then activated and the lower and upper threads 31 and 32 are cut to a predetermined length.
- the cut, free thread ends of the upper and lower threads 31, 32 are disposed of through the gripper tube 25 or the suction nozzle 12.
- the thread ends of the upper thread 31 and lower thread 32 protruding from the splicing channel 20 of the splicing prism 19 are each sucked into one of the holding and opening tubes 34 that can be subjected to negative pressure and are at least partially freed from their thread rotation there, preferably pneumatically.
- the prepared thread ends of the upper thread 31 and lower thread 32 are then pulled back into the splicing channel 20 by a so-called thread feeder (not shown) in such a way that the thread ends are positioned next to each other in the splicing channel 20 with a predetermined overlap, i.e. the thread ends of the upper and Lower threads 31 , 32 are positioned in such a way that they each protrude somewhat from the splicing channel 20 .
- a solenoid valve is then over Injection splicing air is blown into the splicing channel 20 of the splicing prism 19 and the fibers of the thread ends of the upper thread 31 and lower thread 32 located in the splicing channel 20 are swirled together.
- the thread splicing devices 10 are modified with disruptive elements 30 according to the invention.
- an interference element 30 is fastened, which has at least one wall part 41 with a thread approach surface 36.
- the thread approach surface 36 of the disruptive elements 30 protrudes into the space between the thread guide plates 22, 23 and the thread locking elements 11A or 17A in such a way that the thread ends to be spliced touch the thread approach surfaces 36 of the disruptive elements 30 issue.
- Tube return section 29 work station computer
- Thread splicing device 32 lower thread
- Thread cutting device 33 air distribution block
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- Spinning Or Twisting Of Yarns (AREA)
- Replacing, Conveying, And Pick-Finding For Filamentary Materials (AREA)
- Storage Of Web-Like Or Filamentary Materials (AREA)
Abstract
Description
Fadenspleißvorrichtung für eine Arbeitsstelle einer Kreuzspulen herstellenden Textilmaschine Thread splicing device for a work station of a textile machine producing cross-wound bobbins
Die Erfindung betrifft eine Fadenspleißvorrichtung für eine Arbeitsstelle einer Kreuzspulen herstellenden Textilmaschine, die ein Spleißprisma mit einem pneumatisch beaufschlagbaren Spleißkanal sowie jeweils beidseitig des Spleißkanals angeordnete Fadenleitbleche aufweist und mit Fadenarretierungseinrichtungen ausgestattet ist. The invention relates to a thread splicing device for a workstation of a textile machine producing cross-wound bobbins, which has a splicing prism with a splicing channel that can be actuated pneumatically and thread guide plates arranged on both sides of the splicing channel and is equipped with thread locking devices.
Derartig ausgebildete Fadenspleißvorrichtungen zum pneumatischen Verbinden zweier Fadenenden sind im Zusammenhang mit den Arbeitsstellen von Kreuzspulen herstellenden Textilmaschinen, beispielsweise Kreuzspulautomaten, seit langem bekannt und in zahlreichen Patentschriften ausführlich beschrieben. Thread splicing devices designed in this way for pneumatically connecting two thread ends have long been known in connection with the work stations of textile machines producing cross-wound bobbins, for example cross-winding machines, and are described in detail in numerous patent specifications.
Solche Fadenspleißvorrichtungen weisen in der Regel außer einem Spleißprisma, das auf einem so genannten Luftverteilerblock angeordnet und mit Fadenleitblechen ausgestattet ist, Fadenarretier- und -schneideinrichtungen sowie Halte- und Auflöseröhrchen zur Vorbereitung der zu spleißenden Fadenenden auf. In addition to a splicing prism, which is arranged on a so-called air distribution block and equipped with thread guide plates, such thread splicing devices usually have thread locking and cutting devices and holding and opening tubes for preparing the thread ends to be spliced.
Mit derartigen Fadenspleißvorrichtungen können zwei Fadenenden, die beispielsweise durch einen Fadenbruch oder durch einen kontrollierten Reinigerschnitt entstanden sind, pneumatisch so verbunden werden, dass eine nahezu garngleiche Verbindungsstelle besteht. With thread splicing devices of this type, two thread ends that have arisen, for example, as a result of a thread breakage or a controlled clearing cut, can be pneumatically connected in such a way that there is a connection point that is almost identical to the thread.
Nach einem Fadenbruch wird zum Beispiel der auf die Oberfläche einer Kreuzspule aufgelaufene Oberfaden mittels einer Saugdüse aufgenommen und in den Spleißkanal des Spleißprismas der Fadenspleißvorrichtung eingelegt. Nahezu gleichzeitig wird durch ein Greiferrohr der Unterfaden von einer in einer Abspulstellung positionierten Ablaufspule abgeholt und ebenfalls in den Spleißkanal eingelegt, wo der Oberfaden und der Unterfaden dann pneumatisch miteinander verwirbelt werden. After a thread breakage, for example, the upper thread that has run onto the surface of a cheese is picked up by a suction nozzle and placed in the splicing channel of the splicing prism of the thread splicing device. Almost simultaneously, the lower thread is picked up by a gripper tube from a pay-off spool positioned in an unwinding position and also inserted into the splicing channel, where the upper thread and the lower thread are then pneumatically swirled together.
Damit solche Fadenverbindungen ein nahezu garngleiches Aussehen aufweisen und annähernd Garnfestigkeit besitzen, müssen allerdings verschiedene Voraussetzungen erfüllt sein. Die beiden zu verbindenden Fadenenden sollten beispielsweise zunächst exakt abgelängt und sorgfältig für den Spleißvorgang vorbereitet sowie anschließend passgenau im Spleißkanal des Spleißprismas positioniert werden. Die bekannten Fadenspleißvorrichtungen weisen zu diesem Zweck, wie vorstehend angedeutet, verschiedene Einrichtungen, zum Beispiel Fadenarretier- und Fadenschneideinrichtungen, Halte- und Auflöseröhrchen sowie einen Fadenzubringer auf. However, in order for such thread connections to have an appearance that is almost identical to that of yarn and to have approximately yarn strength, various requirements must be met. For example, the two thread ends to be connected should first be cut to exact length and carefully prepared for the splicing process, and then positioned precisely in the splicing channel of the splicing prism. For this purpose, as indicated above, the known thread splicing devices have various devices, for example thread locking and thread cutting devices, holding and opening tubes and a thread feeder.
In der Praxis werden die beiden Fadenenden durch die Saugdüse bzw. das Greiferrohr in den Bereich der Fadenspleißvorrichtung transportiert und dort unter anderem geführt durch Fadenleitbleche, die jeweils endseitig des Spleißkanals des Spleißprismas angeordnet sind, in den Spleißkanal eingefädelt. Während des Einfädelns in den Spleißkanal werden die Fadenenden außerdem in zugehörigen Fadenarretiereinrichtungen sowie Fadenschneideinrichtungen positioniert. In practice, the two thread ends are transported through the suction nozzle or the gripper tube into the area of the thread splicing device and there, guided among other things by thread guide plates that are arranged at the end of the splicing channel of the splicing prism, are threaded into the splicing channel. During threading into the splicing channel, the thread ends are also positioned in associated thread locking devices and thread cutting devices.
Die durch die Fadenschneideinrichtungen passgenau abgelängten und durch die Fadenarretiereinrichtungen fixierten Fadenenden werden anschließend in die Halte- und Auflöseröhrchen eingesaugt und dort pneumatisch vorbereitet. The ends of the threads, which have been precisely cut to length by the thread cutting devices and fixed by the thread locking devices, are then sucked into the holding and opening tubes and prepared there pneumatically.
Das heißt, die Fadenenden werden zunächst weitestgehend von ihrer Garndrehung befreit und anschließend durch einen Fadenzubringer so in den Spleißkanal des Spleißprismas gezogen, dass sie etwa auf gleicher Höhe parallel nebeneinander im Spleißkanal liegen, dabei jedoch eine gegenläufige Ausrichtung aufweisen. Die freien Fadenenden, deren Länge zum Beispiel abhängig ist vom Fadenmaterial und/oder vom Fadendurchmesser, ragen dabei vorzugsweise beidseitig jeweils aus dem Spleißkanal des Spleißprismas heraus. This means that the yarn ends are first largely freed from their yarn twist and then pulled into the splicing channel of the splicing prism by a yarn feeder in such a way that they lie parallel to one another in the splicing channel at about the same height, but are aligned in opposite directions. The free thread ends, the length of which depends, for example, on the thread material and/or the thread diameter, preferably project out of the splicing channel of the splicing prism on both sides.
Über eine oder mehrere in den Spleißkanal des Spleißprismas mündende Einlassbohrungen werden dann Druckluftstöße in den Spleißkanal eingeleitet, die für eine Verwirbelung der zunächst im Wesentlichen parallel nebeneinander im Spleißkanal liegenden Fasern der beiden Fadenenden führen, mit dem Ergebnis, dass eine haltbare Fadenverbindung entsteht. Compressed air blasts are then introduced into the splicing channel via one or more inlet bores opening into the splicing channel of the splicing prism, which causes the fibers of the two thread ends, which initially lie essentially parallel next to each other in the splicing channel, to be swirled, with the result that a durable thread connection is created.
Bei diesen bekannten Fadenspleißvorrichtungen sorgen außerdem die Fadenleitbleche, die endseitig des Spleißkanals angeordnet sind, dafür, dass die zu verspleißenden Fadenenden problemlos in den Spleißkanal des Spleißprismas eingefädelt werden können sowie, dass die Fadenenden während des Spleißvorgangs nicht aus dem Spleißkanal herausgeblasen werden. In these known thread splicing devices, the thread guide plates, which are arranged at the end of the splicing channel, also ensure that the thread ends to be spliced can be threaded into the splicing channel of the splicing prism without any problems and that the thread ends are not blown out of the splicing channel during the splicing process.
Die beschriebenen Fadenspleißvorrichtungen haben sich in der Praxis, insbesondere, wenn die Fäden eine gewisse Garnstärke nicht überschreiten, durchaus bewährt. Schwieriger gestaltet sich die Lage allerdings dann, wenn Grobgarne verarbeitet, das heißt, wenn Fadenenden verspleißt werden sollen, die einen relativ großen Garndurchmesser aufweisen. The thread splicing devices described have in practice, especially when the Threads do not exceed a certain thread size, quite proven. However, the situation becomes more difficult when coarse yarns are being processed, ie when thread ends that have a relatively large yarn diameter are to be spliced.
Beim Spleißen der Fadenenden derartiger Grobgarne stellen sich während des Spleißvorgangs in dem Bereich zwischen den Fadenleitblechen und den Fadenarretierungseinrichtungen oft erhebliche Fadenschwingungen ein, die dazu führen, dass die erstellte Fadenspleißverbindung weder bezüglich ihren Festigkeit noch bezüglich ihres Aussehens vorgegebenen Qualitätsanforderungen entsprechen. When splicing the thread ends of such coarse yarns, considerable thread vibrations often occur in the area between the thread guide plates and the thread locking devices during the splicing process, which means that the thread spliced connection created does not meet specified quality requirements either in terms of strength or appearance.
Um derartige Grobgarne ordnungsgemäß spleißen zu können, sind in der Vergangenheit zwar bereits verschiedene Vorschläge unterbreitet worden, wie man Fadenspleißvorrichtungen modifizieren könnte, die bekannten Vorschläge konnten allerdings nicht befriedigen. In order to be able to properly splice such coarse yarns, various proposals have already been made in the past as to how thread splicing devices could be modified, but the known proposals were unsatisfactory.
Es ist zum Beispiel vorgeschlagen worden, im Bereich der Halte- und Auflöseröhrchen zusätzliche Arretierungsmittel anzuordnen, die die Fadenenden nach dem Ablängen durch die Fadenschneideinrichtungen fixieren. Diese Arretierungsmittel sollen verhindern, dass sich die abgelängten Fadenenden zu sehr kräuseln und nicht ordnungsgemäß vorbereitet werden oder während des Spleißvorgangs ganz oder teilweise aus dem Spleißkanal des Spleißprismas geblasen werden können. It has been proposed, for example, to arrange additional locking means in the area of the holding and dissolving tubes, which fix the thread ends after they have been cut to length by the thread cutting devices. These locking means are intended to prevent the cut-to-length thread ends from curling up too much and not being properly prepared or from being completely or partially blown out of the splicing channel of the splicing prism during the splicing process.
Solche zusätzliche Fadenarretierungsmittel in Form gezackter Bleche, die in Höhe der Halte- und Auflöseröhrchen einer Fadenspleißvorrichtung angeordnet sind, sind beispielsweise in der EP 1 118 570 A2 beschrieben Such additional thread locking means in the form of serrated metal sheets, which are arranged at the level of the holding and opening tubes of a thread splicing device, are described, for example, in EP 1 118 570 A2
Eine vergleichbare Fadenspleißvorrichtung ist auch in der DE 101 24 832 A1 beschrieben, bei der ebenfalls in Höhe der Halte- und Auflöseröhrchen zusätzliche Arretierungsmittel für die abgelängten Fadenenden angeordnet sind. Die Arretierungsmittel sind hier als unterdruckbeaufschlagbare Siebe ausgebildet, die dafür sorgen sollen, dass die abgelängten Fadenenden während des Spleißvorgangs pneumatisch fixiert sind. A comparable thread splicing device is also described in DE 101 24 832 A1, in which additional locking means for the cut thread ends are also arranged at the level of the holding and opening tubes. The locking means are designed here as vacuum-loadable screens, which are intended to ensure that the cut thread ends are fixed pneumatically during the splicing process.
Fadenspleißvorrichtungen, wie sie in der DE 101 24 832 A1 beschrieben sind, weisen allerdings den Nachteil auf, dass sie nicht nur relativ aufwendig und damit kostenintensiv, sondern auch relativ wartungsintensiv sind. Des Weiteren sind zum Beispiel durch die DE-AS 1 535 828 oder die DE 42 26 025 C2 Fadenspleißvorrichtungen bekannt, bei denen direkt im Bereich des Spleißkanals Haltemittel angeordnet sind, die die Fadenenden während des Spleißvorgangs fixieren. Thread splicing devices, as described in DE 101 24 832 A1, however, have the disadvantage that they are not only relatively complex and therefore expensive, but also relatively high-maintenance. Thread splicing devices are also known, for example from DE-AS 1 535 828 or DE 42 26 025 C2, in which holding means are arranged directly in the area of the splicing channel, which hold the thread ends in place during the splicing process.
Bei der Fadenspleißvorrichtung gemäß DE-AS 1 535 828 werden die Fadenenden dabei während des Spleißvorgangs beispielsweise durch zwei beabstandet angeordnete Klemmen fixiert, während die Fixierung der Fadenenden bei der Fadenspleißvorrichtung gemäß DE 42 26 025 C2 durch ein mittig angeordnetes, kissenartiges, luftdurchlässiges Element erfolgt. In the thread splicing device according to DE-AS 1 535 828, the thread ends are fixed during the splicing process, for example by two spaced clamps, while the thread ends in the thread splicing device according to DE 42 26 025 C2 are fixed by a centrally arranged, cushion-like, air-permeable element.
Insgesamt konnten die bekannten Fadenspleißvorrichtungen im Zusammenhang mit der Verarbeitung von Grobgarnen, insbesondere mit der Erstellung ordnungsgemäßer Spleißverbindungen, nicht überzeugen und sind durchaus verbesserungsfähig. Overall, the known thread splicing devices in connection with the processing of coarse yarns, in particular with the creation of proper spliced connections, were unconvincing and could definitely be improved.
Ausgehend von Fadenspleißvorrichtungen der vorstehend beschriebenen Gattung liegt der Erfindung die Aufgabe zugrunde, eine Fadenspleißvorrichtung zu entwickeln, die sicherstellt, dass insbesondere bei Grobgarnen zuverlässig ordnungsgemäße Fadenspleißverbindungen erstellbar sind. Based on thread splicing devices of the type described above, the object of the invention is to develop a thread splicing device that ensures that proper thread splice connections can be reliably created, particularly with coarse yarns.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, dass beidseitig des Spleißprismas in einem Bereich zwischen den Fadenleitblechen und der Fadenarretiereinrichtung jeweils wenigstens ein Störelement so positioniert ist, dass die zu spleißenden Fadenenden während des Spleißvorgangs das Störelement kontaktieren. This object is achieved according to the invention in that at least one disruptive element is positioned on both sides of the splicing prism in a region between the thread guide plates and the thread locking device such that the thread ends to be spliced contact the disruptive element during the splicing process.
Vorteilhafte Ausgestaltungen der erfindungsgemäßen Fadenspleißvorrichtung sind Gegenstand der Unteransprüche. Advantageous configurations of the thread splicing device according to the invention are the subject matter of the dependent claims.
Die erfindungsgemäße Ausführungsform hat insbesondere den Vorteil, dass während des Spleißvorgangs durch das an den Fadenenden anliegende Störelement zuverlässig verhindert wird, dass es in dem betreffenden Bereich zu übermäßigen Fadenschwingungen kommen kann. Das Störelement beeinflusst somit die Einbindung der Fadenenden sowohl hinsichtlich der Festigkeit als auch der Optik positiv. The embodiment according to the invention has the particular advantage that during the splicing process, the interference element resting against the thread ends reliably prevents excessive thread vibrations from occurring in the relevant area. The disruptive element thus has a positive effect on the integration of the thread ends, both in terms of strength and appearance.
Das Störelement stellt somit zuverlässig sicher, dass während des Spleißvorgangs die Fadenenden im Bereich zwischen den ausgangsseitig des Spleißkanals des Spleißprismas angeordneten Fadenleitblechen und den beabstandet angeordneten Fadenarretiereinrichtungen beruhigt werden. Das bedeutet, es wird verhindert, dass große Fadenschwingungen auftreten können, die sich bekanntlich negativ sowohl auf die Festigkeit als auch auf das Aussehen des Fadenspleißes auswirken würden. The disruptive element thus reliably ensures that during the splicing process Thread ends are calmed down in the area between the thread guide plates arranged on the output side of the splicing channel of the splicing prism and the thread locking devices arranged at a distance. This means that large thread oscillations are prevented from occurring, which, as is well known, would have a negative effect on both the strength and the appearance of the thread splice.
In vorteilhafter Ausführungsform ist außerdem vorgesehen, dass das Störelement jeweils auf dem größeren der beiden Fadenleitbleche angeordnet ist. In an advantageous embodiment, it is also provided that the disruptive element is arranged on the larger of the two thread guide plates.
Durch die Montage des Störelementes auf das größere Fadenleitblech wird erreicht, dass die zu spleißenden Fadenenden pneumatisch an das Störelement angelegt werden. Das heißt, da das kleine Fadenleitblech so an das Spleißprisma angeschlossen ist, dass die Ausgangsöffnung des pneumatisch beaufschlagten Spleißkanals teilweise abgedeckt ist, entsteht im Bereich der Ausgangsöffnung eine in Richtung des größeren Fadenleitbleches und damit in Richtung des Störelements wirksame Luftströmung, die die Fadenenden an das Störelement anlegt. By installing the disruptive element on the larger thread guide plate, the thread ends to be spliced are placed pneumatically against the disruptive element. This means that since the small thread guide plate is connected to the splicing prism in such a way that the exit opening of the pneumatically actuated splicing channel is partially covered, an air flow is created in the area of the exit opening that is effective in the direction of the larger thread guide plate and thus in the direction of the disruptive element, which directs the thread ends to the creates disruptive element.
Gemäß vorliegender Erfindung können die Störelemente dabei unterschiedlich gestaltet sein. In einer ersten Ausführungsform ist beispielsweise vorgesehen, dass das Störelement so ausgebildet und angeordnet ist, dass die Fadenanlauf- oder Fadenanlagefläche des Störelements rechtwinklig zur Seitenwand des Spleißprismas verläuft. Bei solchen Störelementen ist die Fadenanlagefläche des Störelements relativ nahe im Bereich des großen Fadenleitbleches positioniert. Bei einer zweiten Ausführungsform weist das Störelement ein mit einer Fadenanlagefläche ausgestattetes Wandteil auf, das bezüglich der Seitenwand des Spleißprismas unter einem Winkel angeordnet ist. Bei einer solchen Ausbildung liegt die Fadenanlagefläche des Störelements weiter beabstandet zum großen Fadenleitblech, mit der Folge, dass der durch das Störelement auf die Fadenschwingungen der Fadenenden ausübbare Störfaktor sehr wirksam ist. According to the present invention, the interfering elements can be designed differently. In a first embodiment, for example, it is provided that the disruptive element is designed and arranged in such a way that the thread approach or thread contact surface of the disruptive element runs at right angles to the side wall of the splicing prism. With such disruptive elements, the thread contact surface of the disruptive element is positioned relatively close to the area of the large thread guide plate. In a second embodiment, the disruptive element has a wall part which is equipped with a thread contact surface and is arranged at an angle with respect to the side wall of the splicing prism. With such a design, the thread contact surface of the disruptive element is further away from the large thread guide plate, with the result that the disruptive factor that can be exerted by the disruptive element on the thread vibrations of the thread ends is very effective.
Des Weiteren ist es allerdings auch möglich, dass das Störelement mehrere jeweils mit einer Fadenanlagefläche ausgestattete Wandteile aufweist. Die Wandteile und damit die an den Wandteilen angeordneten Fadenanlageflächen können dabei rechtwinklig zur Seitenwand des Spleißprismas angeordnet sein und/oder bezüglich der Seitenwand des Spleißprismas einen Winkel aufweisen. Solche mit mehreren Fadenanlageflächen ausgestattete Störelemente sind bezüglich Fadenschwingungsunterdrückung sehr wirksam. Furthermore, however, it is also possible for the disruptive element to have a plurality of wall parts each equipped with a thread contact surface. The wall parts and thus the thread contact surfaces arranged on the wall parts can be arranged at right angles to the side wall of the splicing prism and/or have an angle with respect to the side wall of the splicing prism. Such disruptive elements equipped with several thread contact surfaces are very effective in terms of thread vibration suppression.
Vorzugsweise sind die Störelemente der Fadenspleißvorrichtung aus einem abriebfesten Material, zum Beispiel aus einem keramischen Werkstoff, oder aus einem hochfesten, metallischen Werkstoff gefertigt. Durch den Einsatz eines solchen abriebfesten Werkstoffs wird gewährleistet, dass die Störelemente, auch bei relativ starker Beanspruchung, eine hohe Lebensdauer aufweisen. Die Störelemente können dabei entweder, beispielsweise über eine Schraubverbindung, leicht auswechselbar am Spleißprisma montiert sein oder, zum Beispiel mittels einer Klebeverbindung, sicher aber nur relativ schwer lösbar am Spleißprisma befestigt sein. The disruptive elements of the yarn splicing device are preferably made of an abrasion-resistant material, for example a ceramic material, or a high-strength metallic material. The use of such an abrasion-resistant material ensures that the interfering elements have a long service life, even under relatively heavy loads. The disruptive elements can either be mounted on the splicing prism in an easily exchangeable manner, for example via a screw connection, or they can be fastened to the splicing prism, for example by means of an adhesive connection, but can only be detached with relative difficulty.
Auch bezüglich der Fadenanlagefläche der Wandteile der Störelemente sind unterschiedliche Ausführungsformen vorgesehen. In einer ersten Ausführungsform ist die im Bereich der Anlage der Fadenenden am Wandteil angeordnete Fadenanlagefläche des Störelements weitestgehend gerade ausgebildet. Allerdings kann die im Bereich der Anlage der Fadenenden angeordnete Fadenanlagefläche des Störelements auch eine Aussparung aufweisen. Eine solche Aussparung führt dazu, dass die Fadenenden im Bereich der Anlageflächen zentriert werden, mit der Folge, dass die Fadenschwingungen der Fadenenden gestört und damit relativ stark unterdrückt werden. Different embodiments are also provided with regard to the thread contact surface of the wall parts of the disruptive elements. In a first embodiment, the thread contact surface of the disruptive element arranged in the area where the thread ends rest against the wall part is designed to be as straight as possible. However, the thread contact surface of the disruptive element arranged in the area where the thread ends rest can also have a recess. Such a recess leads to the thread ends being centered in the area of the contact surfaces, with the result that the thread oscillations of the thread ends are disturbed and thus suppressed to a relatively great extent.
Die Fadenspleißvorrichtung für die Arbeitsstelle eines Kreuzspulautomaten kann allerdings auch mit weiteren vorteilhaften Einrichtungen ausgestattet sein. Derartige Fadenspleißvorrichtungen können beispielsweise außer einem mit Störelementen ausgestatteten, pneumatischen Spleißprisma auch weitere Einrichtungen, wie zum Beispiel ein mit Arretierungsmittels ausgestattetes Deckblech, ein mit Arretierungsmittel ausgestattetes Aufsatzblech oder ein spezielles Fadenbremselement aufweisen. Mit solchermaßen ausgestatteten Fadenspleißvorrichtungen ist auch bei der Verarbeitung von Grobgarnen stets gewährleistet, dass die erstellten Fadenspleißverbindungen stets ordnungsgemäß sind, das heißt, dass die Fadenspleißverbindungen Garnfestigkeit sowie ein garngleiches Aussehen aufweisen. However, the thread splicing device for the work station of an automatic cheese winder can also be equipped with other advantageous devices. In addition to a pneumatic splicing prism equipped with disruptive elements, thread splicing devices of this type can also have other devices, such as a cover plate equipped with locking means, a top plate equipped with locking means, or a special thread braking element. Thread splicing devices equipped in this way always ensure, even when processing coarse yarns, that the thread splice connections created are always correct, that is to say that the thread splice connections have yarn strength and a yarn-like appearance.
Weitere Einzelheiten der Erfindung sind nachfolgend anhand eines in den Zeichnungen dargestellten Ausführungsbeispiels erläutert. Es zeigt: Further details of the invention are explained below with reference to an exemplary embodiment illustrated in the drawings. It shows:
Fig. 1 in Seitenansicht eine Arbeitsstelle eines Kreuzspulautomaten mit einer erfindungsgemäß ausgebildeten Fadenspleißvorrichtung, 1 a side view of a work station of an automatic cheese winder with a thread splicing device designed according to the invention,
Fig. 2 eine Fadenspleißvorrichtung, deren Spleißprisma mit einem erfindungsgemäßen Störelement ausgestattet ist, während des Einlegens der zu verbindenden Fadenenden, in Draufsicht, 2 shows a top view of a yarn splicing device, the splicing prism of which is equipped with a disruptive element according to the invention, during the insertion of the yarn ends to be joined;
Fig. 3 die Fadenspleißvorrichtung gemäß Figur 2, während des Spleißvorgangs, 3 shows the thread splicing device according to FIG. 2 during the splicing process,
Fig. 4 eine Fadenspleißvorrichtung gemäß Stand der Technik, während desFig. 4 shows a thread splicing device according to the prior art, during the
Spleißvorgangs, splicing process,
Fig. 5 eine erste Ausführungsform eines erfindungsgemäßen Störelements, mit einer Aussparung im Bereich der Fadenanlagefläche, 5 shows a first embodiment of a disruptive element according to the invention, with a recess in the area of the thread contact surface,
Fig. 6 eine zweite Ausführungsform eines erfindungsgemäßen Störelements, mit einer geraden Fadenanlagefläche, 6 shows a second embodiment of a disruptive element according to the invention, with a straight thread contact surface,
Fig. 7 eine dritte Ausführungsform eines erfindungsgemäßen Störelements, mit einem bezüglich der Seitenwand des Spleißprismas unter einem Winkel angeordneten Wandteil, das eine Fadenanlagefläche aufweist, 7 shows a third embodiment of an interference element according to the invention, with a wall part which is arranged at an angle with respect to the side wall of the splicing prism and has a thread contact surface,
Fig. 8 eine weitere Ausführungsform eines erfindungsgemäßen Störelements, mit mehreren, jeweils eine Fadenanlagefläche aufweisenden Wandteilen. 8 shows a further embodiment of a disruptive element according to the invention, with a plurality of wall parts each having a thread contact surface.
In Figur 1 ist in Seitenansicht schematisch eine Kreuzspulen herstellende Textilmaschine, im Ausführungsbeispiel ein so genannter Kreuzspulautomat 1 , dargestellt. Derartige Kreuzspulautomaten 1 weisen üblicherweise eine Vielzahl gleichartiger, in Reihe nebeneinander angeordneter Arbeitsstellen 2, im vorliegenden Fall so genannte Spulstellen auf, auf denen, wie bekannt und daher nicht näher erläutert, auf einer Ringspinnmaschine produzierte Spinnkopse 9, die relativ wenig Garnmaterial aufweisen, zu großvolumigen Kreuzspulen 15 umgespult werden. Nach ihrer Fertigstellung werden diese Kreuzspulen 15 zum Beispiel mittels eines selbsttätig arbeitenden (nicht dargestellten) Serviceaggregates, vorzugsweise eines Kreuzspulenwechslers, auf eine maschinenlange Kreuzspulen- Transporteinrichtung 21 übergeben und zu einer maschinenendseitig angeordneten Spulenverladestation oder dergleichen transportiert. FIG. 1 shows a schematic side view of a textile machine producing cross-wound bobbins, in the exemplary embodiment a so-called automatic cross-winder 1 . Such automatic cheese winders 1 usually have a large number of similar work stations 2 arranged next to one another in a row, in the present case so-called winding stations, on which, as is known and therefore not explained in detail, spinning cops 9 produced on a ring spinning machine, which have relatively little yarn material, are too large Cheeses 15 are rewound. After their completion, these cross-wound bobbins 15 to Example by means of an automatically working (not shown) service unit, preferably a cheese changer, transferred to a machine-long cheese transport device 21 and transported to a machine end arranged coil loading station or the like.
Solche Kreuzspulautomaten 1 weisen außerdem eine Logistikeinrichtung in Form eines Spulen- und Hülsentransportsystems 3 auf, in dem, auf Transporttellern 8, die Spinnkopse 9 beziehungsweise abgespulte Leerhülsen umlaufen. Von einem solchen Spulen- und Hülsentransportsystem 3 sind in Figur 1 lediglich die Kopszuführstrecke 4, die reversierend antreibbare Speicherstrecke 5, eine der zu den Spulstellen 2 führenden Quertransportstrecken 6 sowie die Hülsenrückführstrecke 7 dargestellt. Such automatic cheese winders 1 also have a logistics device in the form of a bobbin and tube transport system 3, in which, on transport plates 8, the spinning cops 9 or unwound empty tubes circulate. Of such a bobbin and tube transport system 3, only the cop feed section 4, the reversingly driven storage section 5, one of the transverse transport sections 6 leading to the winding stations 2 and the tube return section 7 are shown in FIG.
Des Weiteren verfügen solche Kreuzspulautomaten 1 üblicherweise über eine Zentralsteuereinheit 18, die über einen Maschinenbus 35 sowohl mit den separaten Arbeitsstellenrechnern 29 der einzelnen Arbeitsstellen 2 als auch (nicht dargestellt) mit einer Steuereinrichtung des Serviceaggregates verbunden ist. Furthermore, such automatic cheese winders 1 usually have a central control unit 18, which is connected via a machine bus 35 both to the separate workstation computers 29 of the individual workstations 2 and (not shown) to a control device of the service unit.
Die über das Spulen- und Hülsentransportsystem 3 angelieferten Spinnkopse 9 werden in Abspulstellungen AS, die sich jeweils im Bereich der Quertransportstrecken 6 an den Arbeitsstellen 2 befinden, zu großvolumigen Kreuzspulen 15 umgespult. The spinning cops 9 delivered via the bobbin and tube transport system 3 are rewound into large-volume cross-wound bobbins 15 in unwinding positions AS, which are each located in the region of the transverse transport sections 6 at the work stations 2 .
Die einzelnen Arbeitsstellen 2 verfügen zu diesem Zweck bekanntlich über verschiedene Einrichtungen, die einen ordnungsgemäßen Betrieb dieser Arbeitsstellen 2 gewährleisten. Diese Einrichtungen sind beispielsweise eine Saugdüse 12 zum Handhaben des Oberfadens 31 , ein Greiferrohr 25 zum Handhaben des Unterfadens 32 sowie eine als pneumatische Fadenspleißvorrichtung 10 ausgebildete Fadenverbindungseinrichtung. Die Saugdüse 12 und das Greiferrohr 25 sind jeweils über Saugluftanschlüsse an einen maschinenlangen Saugluftkanal 37 angeschlossen. Die Saugdüse 12 ist dabei um eine Schwenkachse 16 und das Greiferrohr 25 um eine Schwenkachse 26 begrenzt schwenkbar gelagert. For this purpose, the individual jobs 2 are known to have various facilities that ensure proper operation of these jobs 2 . These devices are, for example, a suction nozzle 12 for handling the upper thread 31 , a gripper tube 25 for handling the lower thread 32 and a thread connecting device designed as a pneumatic thread splicing device 10 . The suction nozzle 12 and the gripper tube 25 are each connected to a machine-long suction air channel 37 via suction air connections. The suction nozzle 12 is mounted to a limited extent pivotable about a pivot axis 16 and the gripper tube 25 about a pivot axis 26 .
Weitere (nicht näher dargestellte) Einrichtungen solcher Arbeitsstellen 2 von Kreuzspulautomaten 1 sind zum Beispiel Fadenspanner, Fadenreiniger, Paraffiniereinrichtung, Fadenschneideinrichtung, Fadenzugkraftsensor sowie Unterfadensensor. Die pneumatische Fadenspleißvorrichtung 10 ist bezüglich des während des normalen Spulbetriebes regulären Fadenlaufes etwas zurückgesetzt angeordnet, das heißt, die Fadenspleißvorrichtung 10 wird während des normalen Spulbetriebes nicht durch den laufenden Faden tangiert. Other devices (not shown) of such work stations 2 of automatic cheese winders 1 are, for example, thread tensioners, thread cleaners, paraffining devices, thread cutting devices, thread tension sensors and lower thread sensors. The pneumatic yarn splicing device 10 is arranged somewhat set back with respect to the regular yarn path during normal winding operation, that is, the yarn splicing device 10 is not affected by the running yarn during normal winding operation.
Solche Arbeitsstellen 2 verfügen des Weiteren über eine Spulvorrichtung 24 zum Wickeln einer Kreuzspule 15. Die Spulvorrichtung 24 weist unter anderem einen Spulenrahmen 28 auf, der um eine Schwenkachse 13 beweglich gelagert ist und eine Einrichtung zum drehbaren Haltern einer Kreuzspulenhülse aufweist. Im Ausführungsbeispiel liegt die im Spulenrahmen 28 frei drehbar halterte Kreuzspule 15 mit ihrer Oberfläche auf einer angetriebenen Nuttrommel 14 auf und wird während des Spulbetriebes von dieser über Reibschluss mitgenommen. Der auf die Kreuzspule 15 aufzuwickelnde Faden stammt dabei von einem Spinnkops 9, der im Bereich der Quertransportstrecke 6 in einer Abspulstellung AS positioniert ist. Such workstations 2 also have a winding device 24 for winding a cheese 15. The winding device 24 has, among other things, a creel 28 which is movably mounted about a pivot axis 13 and has a device for rotatably holding a cheese tube. In the exemplary embodiment, the cross-wound bobbin 15, which is freely rotatably held in the bobbin frame 28, rests with its surface on a driven grooved drum 14 and is taken along by this via friction during the winding operation. The thread to be wound onto the cross-wound bobbin 15 comes from a spinning cop 9 which is positioned in the region of the transverse transport path 6 in an unwinding position AS.
Die Figur 2 zeigt in Draufsicht eine Fadenspleißvorrichtung 10 mit einem erfindungsgemäß ausgebildeten Störelement 30 während des Einlegens der zu verspleißenden Fadenenden. Wie ersichtlich, sind ober- und unterhalb der Fadenspleißvorrichtung 10 Fadenarretier- und - schneideinrichtungen 11 , 17 angeordnet. Das heißt, die oben liegende Fadenarretier- und - schneideinrichtung 11 weist eine Fadenarretiereinrichtung 11A zum Fixieren eines mit der Kreuzspule 15 verbundenen, durch die Saugdüse 12 vorgelegten so genannten Oberfadens 31 sowie eine Fadenschneideinrichtung 11 B zum Ablängen eines mit einem Vorlage-Spinnkops 9 verbundenen, durch das Greiferrohr 25 vorgelegten so genannten Unterfadens 32 auf. FIG. 2 shows a top view of a thread splicing device 10 with a disturbing element 30 designed according to the invention during the insertion of the thread ends to be spliced. As can be seen, thread locking and cutting devices 11 , 17 are arranged above and below the thread splicing device 10 . This means that the upper thread locking and cutting device 11 has a thread locking device 11A for fixing a so-called upper thread 31 connected to the cross-wound bobbin 15 and presented through the suction nozzle 12, as well as a thread cutting device 11B for cutting to length a thread connected to a template spinning cop 9, so-called lower thread 32 presented by the gripper tube 25 .
Entsprechend verfügt die unten liegende Fadenarretier- und -schneideinrichtung 17 über eine Fadenarretiereinrichtung 17A zum Fixieren des mit Vorlage-Spinnkops 9 verbundenen, durch das Greiferrohr 25 vorgelegten Unterfadens 32 sowie eine Fadenschneideinrichtung 17B zum Ablängen des von der Saugdüse 12 vorgelegten Oberfadens 31. Aus Gründen der besseren Übersichtlichkeit und weil zum Verständnis der Erfindung nicht zwingend notwendig, wurde auf die Darstellung eines im Bereich der Fadenspleißeinrichtung 10 ebenfalls angeordneten, bekannten Fadenzubringers verzichtet. Correspondingly, the underlying thread locking and cutting device 17 has a thread locking device 17A for fixing the lower thread 32 connected to the supply spinning cop 9 and presented through the gripper tube 25, and a thread cutting device 17B for cutting the upper thread 31 presented by the suction nozzle 12 to length For the sake of clarity and because it is not absolutely necessary for understanding the invention, a known thread feeder which is also arranged in the area of the thread splicing device 10 has not been shown.
Wie aus Figur 2 weiter ersichtlich, weist die Fadenspleißvorrichtung 10 einen Luftverteilungsblock 33 auf, in dem so genannte Halte- und Auflöseröhrchen 34 eingelassen sind. Auf dem Luftverteilungsblock 33 ist ein Spleißprisma 19 angeordnet, das über einen pneumatisch beaufschlagbaren Spleißkanal 20 verfügt. As can also be seen from FIG. 2, the thread splicing device 10 has an air distribution block 33 in which so-called holding and opening tubes 34 are embedded. On the air distribution block 33, a splicing prism 19 is arranged, which has a pneumatically actuable splice channel 20 has.
Das Spleißprisma 19 ist, beispielsweise über eine Schraubverbindung 39, auswechselbar am Luftverteilungsblock 33 festgelegt. The splicing prism 19 is fixed to the air distribution block 33 in an exchangeable manner, for example via a screw connection 39 .
Im Einbauzustand des Spleißprismas 19 stehen in den Spleißkanal 20 mündende Einblasöffnungen mit einer Pneumatikbohrung im Luftverteilungsblock 33 in Verbindung, die über eine entsprechende Leitung, in die zum Beispiel ein Elektromagnetventil eingeschaltet ist, an einer Druckluftquelle angeschlossen ist. When the splicing prism 19 is installed, injection openings opening into the splicing channel 20 are connected to a pneumatic bore in the air distribution block 33, which is connected to a compressed air source via a corresponding line into which, for example, a solenoid valve is switched.
Wie zum Beispiel aus den Figuren 2, 3 und 4 ersichtlich, sind im Bereich der Austrittsöffnungen des Spleißkanals 20 des Spleißprismas 19 jeweils so genannte Fadenleitbleche 22, 23 angeordnet, wobei die Fadenleitbleche 22 und 23 unterschiedlich ausgebildet sind. Das heißt, die kleineren Fadenleitbleche 22 sind plan ausgebildet und im Einbauzustand parallel zu den Seitenwänden 27 des Spleißprismas 19 montiert. Die Anordnung der kleinen Fadenleitbleche 22 ist dabei vorzugsweise außerdem so gewählt, dass die vorne liegende Umlenkkante der Fadenleitbleche 22 jeweils etwa auf Höhe der Mitte des Spleißkanals 20 des Spleißprismas 19 liegt. Die zugehörigen, jeweils auf der gegenüberliegenden Seite der Austrittsöffnungen des Spleißkanals 20 angeordneten größeren Fadenleitbleche 23 weisen bezüglich der Seitenwand 27 des Spleißprismas 19 jeweils eine Abwinkelung auf. As can be seen, for example, from FIGS. 2, 3 and 4, so-called thread guide plates 22, 23 are arranged in the area of the outlet openings of the splicing channel 20 of the splicing prism 19, the thread guide plates 22 and 23 being designed differently. This means that the smaller thread guide plates 22 are flat and, when installed, are mounted parallel to the side walls 27 of the splicing prism 19 . The arrangement of the small thread guide plates 22 is preferably also chosen such that the front deflection edge of the thread guide plates 22 is approximately level with the middle of the splicing channel 20 of the splicing prism 19 . The associated larger thread guide plates 23 , each arranged on the opposite side of the outlet openings of the splicing channel 20 , each have a bend relative to the side wall 27 of the splicing prism 19 .
Wie in den Figuren 2 und 3 dargestellt, ist auf den großen Fadenleitblechen 23 außerdem jeweils ein erfindungsgemäßes, so genanntes Störelement 30 angeordnet. Diese erfindungsgemäßen Störelemente 30, deren Funktion später anhand der Figuren 3 und 4 erläutert werden wird, können verschiedene Ausführungsformen aufweisen sowie unterschiedlich an das Spleißprisma 19 angeschlossen sein. Die Störelemente 30 können beispielsweise mittels einer Schraubverbindung 39 leicht lös- und auswechselbar mit dem Spleißprisma 19 verbunden oder, zum Beispiel durch ein Klebemittel, fest an das Spleißprisma 19 angeschlossen sein. As shown in FIGS. 2 and 3, a so-called disruptive element 30 according to the invention is also arranged on each of the large thread guide plates 23 . These interference elements 30 according to the invention, the function of which will be explained later with reference to FIGS. 3 and 4, can have different embodiments and can be connected to the splicing prism 19 in different ways. The disruptive elements 30 can be connected to the splicing prism 19 in an easily detachable and replaceable manner, for example by means of a screw connection 39, or they can be firmly connected to the splicing prism 19, for example by means of an adhesive.
Die Figuren 5 bis 8 zeigen einige der möglichen Ausführungsformen eines erfindungsgemäßen Störelements 30. Figures 5 to 8 show some of the possible embodiments of a disruptive element 30 according to the invention.
Die Figuren 5 und 6 zeigen beispielweise erfindungsgemäße Störelemente 30, mit einem im Einbauzustand jeweils parallel zur Seitenwand des Spleißprismas 19 angeordneten Wandteil 41 , aber unterschiedlich ausgebildeten Fadenanlaufflächen 36. Das Störelement 30 gemäß Figur 6 weist beispielsweise eine im Wesentlichen gerade durchlaufende Fadenanlauffläche 36 auf, während das in Figur 5 dargestellte Störelement 30 im Bereich seiner Fadenanlauffläche 36 mit einer Ausbuchtung 38 versehen ist. Eine solche Ausbuchtung 38 führt zu einer vorteilhaften Zentrierung der zu verspleißenden Fadenenden während des Spleißvorgangs. Figures 5 and 6 show examples of interfering elements 30 according to the invention, with an im In the installed state, wall part 41 is arranged parallel to the side wall of the splicing prism 19, but with differently designed yarn contact surfaces 36. The disruptive element 30 according to FIG. 6 has, for example, a substantially straight continuous yarn contact surface 36, while the disruptive element 30 shown in FIG Bulge 38 is provided. Such a bulge 38 leads to an advantageous centering of the thread ends to be spliced during the splicing process.
Das in Figur 7 dargestellte Störelement 30 weist ein mit einer Fadenanlauffläche 36 ausgestattetes Wandteil 41 auf, das im Einbauzustand des Störelements 30 bezüglich der zugehörigen Seitenwand 27 des Spleißprismas 19 unter einem Winkel a angeordnet ist. The disruptive element 30 shown in FIG. 7 has a wall part 41 which is equipped with a thread approach surface 36 and which is arranged at an angle a with respect to the associated side wall 27 of the splicing prism 19 when the disruptive element 30 is installed.
Das in Figur 8 dargestellte Störelement 30 weist zwei Wandteile 41 auf, die jeweils mit einer Fadenanlauffläche 36 ausgestattet sind. Im Einbauzustand des Störelements 30 ist das erste Wandteil 41 bezüglich der zugehörigen Seitenwand 27 des Spleißprismas 19 parallel angeordnet, während das zweite Wandteil 41 bezüglich der Seitenwand 27 des Spleißprismas 19 unter einem Winkel a positioniert ist. The disturbing element 30 shown in FIG. 8 has two wall parts 41 which are each equipped with a thread contact surface 36 . When the interfering element 30 is installed, the first wall part 41 is arranged parallel to the associated side wall 27 of the splicing prism 19 , while the second wall part 41 is positioned at an angle α with respect to the side wall 27 of the splicing prism 19 .
Die vorstehend beschriebenen Störelemente 30 weisen außerdem beispielsweise eine Befestigungsbohrung 40 auf und können somit mittels einer Schraubverbindung problemlos, im Bedarfsfall leicht lösbar, am Spleißprisma 19 befestigt werden. The disruptive elements 30 described above also have, for example, a fastening bore 40 and can thus be fastened to the splicing prism 19 by means of a screw connection without any problems, easily detachable if necessary.
Die Erfindung soll ausdrücklich nicht auf die vorstehend beschriebenen Ausführungsformen für Störelemente 30 beschränkt sein. Die Störelemente 30 können beispielsweise auch mehr als zwei mit Fadenanlaufflächen 36 ausgestattete Wandteile 41 aufweisen. Ebenso ist es denkbar, dass die Wandteile 41 nur teilweise mit einer Fadenanlauffläche 36 ausgebildet sind und zumindest teilweise ausgehöhlt sind. Das heißt, dass Wandteil 41 weist beispielsweise einen als Fadenanlauffläche 36 ausgebildeten schmalen Rand auf, während im Bereich der Fadenanlauffläche 36 das Wandteil 41 ausgehöhlt ist. Des Weiteren könnte auch die Ausbildung der Fadenanlauffläche 36 eine abweichende, zum Beispiel wellige Form aufweisen. The invention should expressly not be limited to the embodiments for disruptive elements 30 described above. The interfering elements 30 can, for example, also have more than two wall parts 41 equipped with yarn run-on surfaces 36 . It is also conceivable that the wall parts 41 are only partially formed with a thread run-on surface 36 and are at least partially hollowed out. This means that the wall part 41 has, for example, a narrow edge designed as a thread contact surface 36, while the wall part 41 is hollowed out in the area of the thread contact surface 36. Furthermore, the formation of the thread approach surface 36 could also have a different shape, for example a wavy shape.
Funktion der erfindunqsqemäß ausgebildeten Fadenspleißvorrichtunq: Function of the thread splicing device designed according to the invention:
Bei einer Spulunterbrechung, beispielsweise aufgrund eines regulären Reinigerschnitts oder eines Fadenbruches oberhalb des Fadenspanners, bleibt der Unterfaden 32 im Fadenspanner der Arbeitsstelle 2 gehalten, da der Fadenreiniger aufgrund des Ausbleibens eines dynamischen Fadensignals die Fadenklemmfunktion des Fadenspanners ausgelöst hat. Der im Fadenspanner gehaltene Unterfaden 32 wird anschließend durch das Greiferrohr 25 abgeholt, das zu diesem Zweck zunächst in den Bereich des Fadenspanners geschwenkt wird und dort den Unterfaden 32 ansaugt. Der Fadenspanner gibt gleichzeitig den Unterfaden 32 frei. If the winding is interrupted, for example due to a regular clearer cut or a thread breakage above the thread tensioner, the lower thread 32 remains in the thread tensioner of work station 2 because the thread clearer triggered the thread clamping function of the thread tensioner due to the absence of a dynamic thread signal. The lower thread 32 held in the thread tensioner is then picked up by the gripper tube 25, which for this purpose is first pivoted into the area of the thread tensioner and sucks the lower thread 32 there. The thread tensioner releases the lower thread 32 at the same time.
Wenn die erfolgreiche Aufnahme des Unterfadens 32, zum Beispiel durch einen innerhalb des Greiferrohres 25 angeordneten (nicht dargestellten) Sensor, registriert wird, schwenkt das Greiferrohr 25 in eine obere, in Figur 2 angedeutete Position. Der Unterfaden 32 wird dabei in den Spleißkanal 20 des Spleißprismas 19 sowie in das Fadenarretierelement 17A der unteren und das Fadenschneidelement 11 B der oberen bzw. unteren Fadenarretier- und Fadenschneideinrichtung 11 , 17 eingelegt. If the successful pick-up of the lower thread 32 is registered, for example by a sensor (not shown) arranged inside the gripper tube 25, the gripper tube 25 pivots into an upper position indicated in FIG. The lower thread 32 is inserted into the splicing channel 20 of the splicing prism 19 and into the thread locking element 17A of the lower thread locking and thread cutting device 11 , 17 and the thread cutting element 11B of the upper or lower thread locking and thread cutting device 11 , 17 .
Etwa gleichzeitig wird der auf die Kreuzspule 15 aufgelaufene Oberfaden 31 durch die Saugdüse 12 aufgenommen und ebenfalls in den Spleißkanal 20 der Fadenspleißvorrichtung 10 eingelegt. Die Saugdüse 12 fädelt dabei den Oberfaden 31 , wie in Figur 2 dargestellt, in den Spleißkanal 20 des Spleißprismas 19, in das Fadenarretierelement 11A der oberen Fadenarretier- und -schneideinrichtung 11 sowie in das Fadenschneidelement 17B der unteren Fadenarretier- und -schneideinrichtung 17 ein. Anschließend werden die Fadenschneideinrichtungen 11 B und 17B aktiviert und dabei der Unter- sowie der Oberfaden 31 bzw. 32 auf eine vorgegebene Länge geschnitten. Die abgeschnittenen, freien Fadenenden von Ober- und Unterfaden 31 , 32 werden durch das Greiferrohr 25 bzw. die Saugdüse 12 entsorgt. At about the same time, the upper thread 31 that has accumulated on the cross-wound bobbin 15 is picked up by the suction nozzle 12 and also inserted into the splicing channel 20 of the thread splicing device 10 . The suction nozzle 12 threads the upper thread 31, as shown in FIG. The thread cutting devices 11B and 17B are then activated and the lower and upper threads 31 and 32 are cut to a predetermined length. The cut, free thread ends of the upper and lower threads 31, 32 are disposed of through the gripper tube 25 or the suction nozzle 12.
Die aus dem Spleißkanal 20 des Spleißprismas 19 herausragenden Fadenenden von Oberfaden 31 und Unterfaden 32 werden jeweils in eines der unterdruckbeaufschlagbaren Halte- und Auflöseröhrchen 34 eingesaugt und dort, vorzugsweise pneumatisch, wenigstens teilweise von ihrer Fadendrehung befreit. The thread ends of the upper thread 31 and lower thread 32 protruding from the splicing channel 20 of the splicing prism 19 are each sucked into one of the holding and opening tubes 34 that can be subjected to negative pressure and are at least partially freed from their thread rotation there, preferably pneumatically.
Im Anschluss werden die vorbereiteten Fadenenden von Oberfaden 31 und Unterfaden 32 durch einen so genannten (nicht dargestellten) Fadenzubringer so in den Spleißkanal 20 zurückgezogen, dass die Fadenenden im Spleißkanal 20 mit vorgegebener Überlappung nebeneinander positioniert sind, das heißt, die Fadenenden des Ober und des Unterfadens 31 , 32 sind so positioniert, dass sie jeweils etwas aus dem Spleißkanal 20 herausragen. Durch entsprechendes Ansteuern zum Beispiel eines Elektromagnetventils wird anschließend über Einblasöffnungen Spleißluft in den Spleißkanal 20 des Spleißprismas 19 geblasen und dabei die Fasern der im Spleißkanal 20 befindlichen Fadenenden von Oberfaden 31 und Unterfaden 32 miteinander verwirbelt. The prepared thread ends of the upper thread 31 and lower thread 32 are then pulled back into the splicing channel 20 by a so-called thread feeder (not shown) in such a way that the thread ends are positioned next to each other in the splicing channel 20 with a predetermined overlap, i.e. the thread ends of the upper and Lower threads 31 , 32 are positioned in such a way that they each protrude somewhat from the splicing channel 20 . By appropriate control, for example, a solenoid valve is then over Injection splicing air is blown into the splicing channel 20 of the splicing prism 19 and the fibers of the thread ends of the upper thread 31 and lower thread 32 located in the splicing channel 20 are swirled together.
Während dieses Spleißvorgangs tritt, wie in Figur 4 anhand des Standes der Technik angedeutet, über die Austrittsöffnungen des Spleißkanals 20 außerdem Spleißluft mit schraubenlinienförmiger Ausrichtung aus dem Spleißkanal 20 aus, mit der Folge, dass sich, wenn keine besonderen Maßnahmen zum Einsatz kommen, im Freiraum zwischen den Fadenleitblechen 22, 23 und den Fadenarretierelementen 11 A bzw. 17A, relativ unkontrollierte Fadenbewegungen einstellen. During this splicing process, as indicated in Figure 4 based on the prior art, splicing air also exits the splicing channel 20 in a helical orientation via the outlet openings of the splicing channel 20, with the result that, if no special measures are used, there is free space relatively uncontrolled thread movements between the thread guide plates 22, 23 and the thread locking elements 11A and 17A.
Solche unkontrollierten Fadenbewegungen wirken sich insbesondere bei Grobgarnen sehr negativ auf die zu erstellenden Fadenspleiße aus, das heißt, mit den bekannten, in Figur 4 dargestellten Fadenspleißvorrichtungen 10 sind Grobgarne oft kaum ordnungsgemäß spleißbar. Such uncontrolled thread movements have a very negative effect on the thread splices to be created, particularly in the case of coarse threads, that is to say, with the known thread splicing devices 10 shown in FIG. 4, coarse threads can often hardly be properly spliced.
Um die Erstellung ordnungsgemäßer Fadenspleiße auch bei Grobgarnen gewährleisten zu können, werden die Fadenspleißvorrichtungen 10 mit erfindungsgemäßen Störelementen 30 modifiziert. In order to be able to ensure the creation of correct thread splices even with coarse yarns, the thread splicing devices 10 are modified with disruptive elements 30 according to the invention.
Das heißt, auf dem größeren der beiden jeweils ausgangsseitig des Spleißkanals 20 des Spleißprismas 19 angeordneten Fadenleitbleche 23 wird jeweils ein Störelement 30 befestigt, das wenigstens ein Wandteil 41 mit einer Fadenanlauffläche 36 aufweist. In other words, on the larger of the two thread guide plates 23 arranged on the output side of the splicing channel 20 of the splicing prism 19, an interference element 30 is fastened, which has at least one wall part 41 with a thread approach surface 36.
Die Fadenanlauffläche 36 der Störelemente 30 ragt jeweils, wie in Figur 3 dargestellt, so in den Freiraum zwischen den Fadenleitblechen 22, 23 und den Fadenarretierelementen 11 A bzw. 17A hinein, dass die zu spleißenden Fadenenden während des Spleißvorgangs an den Fadenanlaufflächen 36 der Störelemente 30 anliegen. As shown in Figure 3, the thread approach surface 36 of the disruptive elements 30 protrudes into the space between the thread guide plates 22, 23 and the thread locking elements 11A or 17A in such a way that the thread ends to be spliced touch the thread approach surfaces 36 of the disruptive elements 30 issue.
Dieses Anliegen der Fadenenden an den Störelementen 30 führt zu einer erheblichen Beruhigung der Fadenenden, mit der Folge, dass auch bei der Verarbeitung von Grobgarnen haltbare, nahezu garngleiche Fadenverbindung entstehen. Bezugszeichenhste This abutting of the thread ends against the disruptive elements 30 leads to a considerable calming of the thread ends, with the result that durable, almost yarn-like thread connections are produced even when coarse yarns are being processed. reference number
Kreuzspulautomat 23 FadenleitblechAutomatic cheese winder 23 thread guide plate
Arbeitsstelle 24 SpulvorrichtungJob 24 spooling device
Spulen- und Hülsentransportsystem 25 GreiferrohrBobbin and tube transport system 25 gripper tube
Kopszuführstrecke 26 Schwenkachse von 25Kopszuführung 26 pivot axis of 25
Speicherstrecke 27 Seitenwand von 19Storage section 27 side wall from 19
Quertransportstrecke 28 SpulenrahmenCross transport section 28 creels
Hülsenrückführstrecke 29 ArbeitsstellenrechnerTube return section 29 work station computer
Transportteller 30 StörelementTransport plate 30 disruptive element
Spinnkops 31 OberfadenSpinning cop 31 upper thread
Fadenspleißvorrichtung 32 UnterfadenThread splicing device 32 lower thread
Fadenarretier- und Thread lock and
Fadenschneidvorrichtung 33 LuftverteilungblockThread cutting device 33 air distribution block
Saugdüse 34 Halte- und AuflöseröhrchenSuction nozzle 34 holding and dissolving tubes
Schwenkachse von 28 35 MaschinenbusPivoting axis of 28 35 machine bus
Nuttrommel 36 FadenanlaufflächeGrooved drum 36 thread contact surface
Kreuzspule 37 SaugluftkanalCross coil 37 suction air duct
Schwenkachse von 12 38 AusbuchtungPivot axis of 12 38 bulge
Fadenarretier- und 39 SchraubverbindungThread lock and 39 screw connection
Fadenschneidvorrichtung 40 BefestigungsbohrungThread cutting device 40 mounting hole
Zentralsteuereinheit 41 WandteilCentral control unit 41 wall part
Spleißprisma splicing prism
Spleißkanal splice channel
Kreuzspulen-Transporteinrichtung Cheese transport device
Fadenleitblech AS Abspulstellung Thread guide plate AS unwinding position
Claims
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2024513367A JP2024533087A (en) | 2021-09-17 | 2022-09-01 | Yarn splicing device for a work station of a textile machine for producing twill packages |
| CN202280059821.5A CN117916181A (en) | 2021-09-17 | 2022-09-01 | Yarn splicing device in the working position of a textile machine for producing cross-wound yarns |
| MX2024002864A MX2024002864A (en) | 2021-09-17 | 2022-09-01 | YARN SPLICING DEVICE FOR A WORKSTATION OF A TEXTILE MACHINE PRODUCING CROSS-WOUND BOBBINS. |
| EP22772890.4A EP4402083A1 (en) | 2021-09-17 | 2022-09-01 | Thread-splicing device for a workstation of a textile machine producing cross-wound bobbins |
| US18/691,265 US20250042690A1 (en) | 2021-09-17 | 2022-09-01 | Thread-splicing device for a workstation of a textile machine producing cross-wound bobbins |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102021124152.9 | 2021-09-17 | ||
| DE102021124152.9A DE102021124152A1 (en) | 2021-09-17 | 2021-09-17 | Thread splicing device for a work station of a textile machine producing cross-wound bobbins |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2023041329A1 true WO2023041329A1 (en) | 2023-03-23 |
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ID=83360911
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2022/074264 Ceased WO2023041329A1 (en) | 2021-09-17 | 2022-09-01 | Thread-splicing device for a workstation of a textile machine producing cross-wound bobbins |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US20250042690A1 (en) |
| EP (1) | EP4402083A1 (en) |
| JP (1) | JP2024533087A (en) |
| CN (1) | CN117916181A (en) |
| DE (1) | DE102021124152A1 (en) |
| MX (1) | MX2024002864A (en) |
| WO (1) | WO2023041329A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE102023109177A1 (en) * | 2023-04-12 | 2024-10-17 | Rieter Automatic Winder GmbH | thread splicing device and textile machine |
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- 2021-09-17 DE DE102021124152.9A patent/DE102021124152A1/en active Pending
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2022
- 2022-09-01 JP JP2024513367A patent/JP2024533087A/en active Pending
- 2022-09-01 MX MX2024002864A patent/MX2024002864A/en unknown
- 2022-09-01 WO PCT/EP2022/074264 patent/WO2023041329A1/en not_active Ceased
- 2022-09-01 EP EP22772890.4A patent/EP4402083A1/en not_active Withdrawn
- 2022-09-01 CN CN202280059821.5A patent/CN117916181A/en active Pending
- 2022-09-01 US US18/691,265 patent/US20250042690A1/en active Pending
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| US5829706A (en) * | 1994-06-16 | 1998-11-03 | W. Schlafhorst Ag & Co. | Yarn end preparation device for cheese-producing textile machines |
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| EP3505472A1 (en) * | 2017-12-26 | 2019-07-03 | Murata Machinery, Ltd. | Yarn joining device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2024533087A (en) | 2024-09-12 |
| CN117916181A (en) | 2024-04-19 |
| DE102021124152A1 (en) | 2023-03-23 |
| US20250042690A1 (en) | 2025-02-06 |
| EP4402083A1 (en) | 2024-07-24 |
| MX2024002864A (en) | 2024-03-21 |
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