JP7222686B2 - Yarn splicing equipment for textile machinery - Google Patents

Description

The present invention is a yarn splicing device for a textile machine, in particular for a working unit of an automatic twill winder, wherein the yarn splicing device comprises a splicing prism comprising a pneumatically feedable splicing passage and a splicing prism for the splicing prism. spaced apart from each other, the thread handling devices each having a thread clamping device for securing a top or bobbin thread and a thread end of the top or bobbin thread; and a yarn cutting device for cutting the yarn to a predetermined length.

Such air-operated yarn splicing devices have long been known in the textile machinery industry, in particular in connection with air spinning machines and automatic twill winders, and are described, for example, in the publication DE 102 024 080 A1. It is described in greater detail in the specification (DE 102024080 A1) or in the applicant's handbook "Autoconer 338".

With such a yarn splicing device, two yarn ends can be pneumatically swirled to form a knot-free splice, which approximates the original yarn. It has yarn strength and ideally has an appearance approximately equal to that of the original yarn. That is, if a yarn break or a defined clearing break occurs during the winding process in one of the winding units of the automatic twill winder, the yarn end of the severed yarn is First, it is drawn back into the region of the thread splicing device by a special pneumatic device.

A suction nozzle draws back a thread end of, for example, a so-called needle thread from a twill package and removes the thread end from the splicing channel of the splicing prism of the thread splicing device, the thread clamping device arranged above the splicing channel, and the splicing device. It passes through a thread cutting device positioned below the passageway. Simultaneously or subsequently, the thread end of the so-called bobbin thread coming from the supply bobbin positioned on the winding unit is also fed into the splicing prism under the splicing path by means of a gripper tube which can be supplied with vacuum. Threaded through a thread clamping device located and a thread cutting device located above the splicing path. The yarn end is then cut to length by a yarn cutting device, sucked into a so-called holding and untwisting tube and prepared for the subsequent splicing process in the holding and untwisting tube. . That is, the yarn end is first fully untwisted in the holding and untwisting tube, then the yarn end is pulled back into the splicing passage by the yarn puller, whereby the yarn end is returned to the splicing passage. They can be positioned side-by-side with each other with a pre-determinable mate and can be pneumatically swirled within the splicing passage. In order to be able to use such a yarn splicing device to form a pneumatic splice having approximately the same yarn strength and approximately the same appearance as the original yarn, the yarn ends are It is preferable not to exceed a certain free thread length after cutting to the wire.

In the thread splicing device described above, the thread cutting device is therefore arranged as far as possible in the region of the outlet of the splicing channel of the splicing prism or, for example, DE 42 40 728 A1 (DE 42 40 728). Immediately upstream of the outlet of the splicing channel, another additional thread cutting device is installed, as described in A1).

These known yarn splicing devices, which have proved to be suitable in themselves, are particularly useful in working units of automatic twill winders which have a sufficiently open yarn runway, i.e. the operator has access to the yarn runway from the front. used in automatic twill winders capable of

However, also in connection with textile machines for producing twill packages, automatic twill winders are known which have working units each having a so-called closed yarn guide channel.

The working unit of an automatic twill winder described, for example, in DE 102010049515 A1 (DE 102010049515 A1) has a multipart yarn guide channel surrounding the yarn runway, which yarn guide channel provides a containment housing or part for a wide variety of yarn monitoring and yarn handling devices.

The now closed thread guide path extends between the pay-off bobbin positioned at the pay-off point and the winding device on which the winding package is rotatably supported. If required, the yarn guide channel can be partially supplied with underpressure, so that an underpressure flow with a definite and determinable flow direction is generated in the yarn guide channel.

A receiving housing for the thread splicing device is integrated in the thread guide channel and includes a first suction air tube piece for suctioning the bobbin thread connected to the pay-out bobbin and a twill package. A second suction air pipe piece is connected to suck the needle thread wound up on the surface.

However, in view of the extremely confined space situation in the area of the receiving housing of the closed thread guide channel, the insertion of the thread splicing device, in particular the positioning of the associated thread handling device, is often difficult.

Thread splicing devices have therefore been developed which have a relatively small space requirement and which can therefore be arranged relatively problem-free in the receiving housing of a closed thread guide channel.

For example, the thread splicing device described in the later published German Patent Application DE 102016115732 (DE 102016115732) is designed as a rotary splicer. This yarn splicing device has a splicing prism arranged on the air distributor and two rotatably supported control elements, each of which can exert a defined force by an individual drive. there is Yarn-handling devices, such as yarn-cutting devices and yarn-clamping devices, can be activated as required by means of control elements. In this case, however, the yarn handling device is preferably mounted on straight fixed elements, which are each arranged at a relatively large distance from the splicing path of the splicing prism, so that as a result , the thread ends of the upper thread and the lower thread, which are to be cut by the thread cutting device before the splicing process, are relatively long after cutting. Furthermore, the rotary splicer has a rotatably supported yarn jogger which, prior to cutting by the yarn cutting device, cuts the yarn end so that the yarn end has an imaginable length. In order to position it, it is first necessary to carry out a relatively large rotational movement before each splicing step.

Starting from the above-mentioned prior art, the problem underlying the present invention is that the thread ends of the upper and lower threads, after being cut to length by the thread cutting device, do not need to be subjected to additional measures. Another object of the present invention is to provide a yarn splicing device that enables orderly splicing of yarns as it is, and is configured to have a settable length.

The object is that the yarn splicing device is embodied as a rotary splicer with at least one control element with which the yarn handling device can be actuated as required, wherein on both sides of the splicing channel of the splicing prism, A holding device is arranged in each case, the holding device having a first support point for fixing one of the thread-cutting devices, the first support The point is solved by being arranged between the opening of the splicing channel and the outer edge of the support element surrounding the control element and the splicing prism. Alternatively or additionally, the holding device comprises a first support surface portion comprising first support points for fixing the thread cutting device and second support points for fixing the thread clamping device. a second support surface portion including a second support surface portion, wherein the first support surface portion is angled with respect to the second support surface portion; . In other words, the first plane containing the first support surface portion with the first support points is at an angle to the second plane containing the second support surface portion with the second support points. forming a line of intersection and an angle α in the region of intersection of the first plane and the second plane. The holding device can preferably be formed from one part or from several parts. In a multi-part construction, the parts of the holding device can be connected to each other. In particular, in a further preferred embodiment the parts of the holding device are connected to one another at least via one common holding element, for example a support element. Further preferably, the support surface sections with the respective support points can be arranged adjacent to one another, which makes it possible to obtain a very compact construction. Further preferably, the holding device can be formed from a punched element, which is particularly suitable for arc-shaped configurations, wherein the support surface section with the respective support point is punched out. It may be shaped by a In this way, the holding device can be manufactured very inexpensively.

Further preferred embodiments of the invention are the subject matter of the dependent claims and the following description.

The configuration of the thread splicing device according to the invention has the following advantages in particular. That is, in the yarn splicing device according to the present invention, the configuration and arrangement of the holding device allow the yarn cutting device to be positioned very close to the region of the opening or exit of the splicing channel of the splicing prism, thereby cutting the yarn. The thread ends of the top thread and the bobbin thread formed by the thread cutting device can be cut to relatively short lengths, particularly settable and thus to optimum lengths. In other words, the splice formed not only has a high strength, as is known from such splicing devices, but the splice is formed by suitable positioning of the yarn cutting device. Due to the relatively short free thread overhang, it is also distinguished by an appearance that is identical or very similar to the unspliced thread section.

A yarn splicing device embodied as a rotary splicer can then be used with advantage both in working units with an open yarn runway and, in particular, in working units with a closed yarn guide channel. can. Such rotary splicers are likewise used in textile machines, such as pneumatic spinning machines, which have a plurality of working units or have a yarn splicing device assigned to only one working unit. can do.

An alternative or additional embodiment of the holding device as an angle segment or arc member allows the use of a relatively simply constructed and therefore inexpensive holding device with which an optimum Mounting points for the thread cutting device and the thread clamping device can be provided that allow for flexible thread handling. In other words, the holding devices can each be adapted relatively well to the shape of the rotary splicer, and in the installed state the support surface portions of the holding devices respectively correspond to the splicing passages of the splicing prisms as far as the thread handling device can. is positioned so as to be positionable in the vicinity of the area of the outlet of the

In a preferred embodiment, the first support surface portion is arranged with respect to the second support surface portion at an angle α in the range 110° to 160°, in particular in the range 120° to 130°. there is In other words, the support surface portions are placed at an angle to each other such that a supplementary angle is formed, wherein the first supplementary angle defining the angle α is in the range 110° to 160°, in particular It lies in the range from 120° to 130° and the associated second complementary angle lies in the range from 70° to 20°, in particular from 60° to 50°. This preferred angular range allows a more compact structural form of the rotary splicer. This is because the arrangement of the yarn handling devices relative to each other can thereby be oriented approximately at the radial contour of the rotary splicer and thus as far as possible the correspondingly arranged openings or correspondingly arranged outlets of the splicing channels. This is because they can be positioned close to each other.

Preferably, one of the support surface portions of the holding device is provided with a thread cutting device and an adjacent support surface is provided with a thread clamping device. In this manner, a functionally appropriate positioning of the thread handling device in the region of the thread path of the upper or lower thread, i.e., if necessary, an orderly preparation of the thread ends to be spliced. Guaranteed to work without problems.

In a further preferred embodiment, the yarn cutting device has a stationary cutting edge and a movably supported cutting edge, the movably supported cutting edge being provided with a switching projection of the control element. It is proposed that a switching pin is connected to which a force can be applied. Further preferably, the yarn clamping device for securing the yarn has a stationary clamping jaw and a movably supported clamping jaw, the movably supported clamping jaw being connected to the second clamping jaw of the control element. It has a separate switching pin that can be exerted by the switching prongs of the .

In other words, the rotary splicer has a control element which, in the region of the mounting point of the holding device, has respectively a first and a second switching lug, the first A switching prong serves to operate the thread cutting device and a second switching prong serves to operate the thread clamping device.

With these switching prongs, the switching pin of the yarn cutting device or of the yarn clamping device is always fixed in order to always fix the yarn end to be prepared for the subsequent splicing process in an orderly manner and in a regular manner. It can be driven and controlled so that it can be cut to a predetermined length.

Further details of the invention are explained in the following with reference to the embodiments shown in the drawings.

1 is a schematic side view of one working unit of an automatic twill winder with a yarn splicing device having a configuration according to the invention; FIG. 1 shows a front view of a thread splicing device in the form of a rotary splicer with a thread handling device arranged on a holding device; FIG. FIG. 3 shows a holding device formed as an angle segment according to one embodiment with a thread cutting device and a thread clamping device; FIG. 10 shows a retaining device formed as an arc member according to another embodiment;

FIG. 1 schematically shows a working unit 2 of a textile machine for producing yarn packages, in an embodiment an automatic yarn winder 1, in a side view.

As is known, such an automatic twill winder 1 comprises a large number of such working units 2 of the same type arranged side by side in rows between end frames (not shown). have.

In these work units 2 the pay-off bobbins, for example the spinning cops 9 produced in the ring spinning machine arranged upstream in the production process, are unwound into large-volume twill packages 15 and twill packages 15 After its completion, by means of an automatically actuated service assembly (also not shown), it is delivered to a machine length cheese package conveyor 21, and using this cheese package conveyor 21, the machine end It is transported to a package transfer device arranged on the department side.

Such an automatic tuft winder 1 usually also has a central control unit 11 which is connected, for example, via a machine bus 16 to the work unit computers 29 of the individual work units 2 . ing.

In the exemplary embodiment, the automatic twill winder 1 furthermore has a supply device in the form of a spinning cop and empty tube transport system 3, of which only a cop supply section 4 is shown in FIG. , a reversibly drivable storage section 5, a transverse conveying section 6 leading to a working unit 2 formed as a winding unit and a tube return section 7 are shown. In this spinning cop and empty tube conveying system 3 , vertically oriented spinning cops 9 or empty tubes circulate on a conveying tray 8 .

The spinning cops 9, which are supplied via the cop supply section 4 and initially stored intermediately in the storage section 5, are now in the unwinding position AS, which is respectively located in the vicinity of the work unit 2 in the region of the transverse conveying section 6. , is rewound into a twill package 15 of large volume.

The individual winding units 2 have for this purpose various devices which are known per se and are therefore only shown schematically, which ensure an orderly operation of these winding units 2 . These devices are, for example, the suction nozzle 12, the gripper tube 25 and the yarn splicing device 10, which in this embodiment is designed as a rotary splicer.

At this time, the needle yarn 31 wound on the surface of the twill package 15 after the winding is interrupted is accommodated by the suction nozzle 12 which is rotatably supported while being limited about the pivot axis 13, and delivered to the yarn splicing device 10. be able to.

A gripper tube 25 , which is rotatable in a limited manner about the swivel axis 20 , is used for handling the bobbin thread 32 connected to the spinning cop 9 after winding interruptions, i. The ends are likewise handed over to the thread splicing device 10 .

The yarn splicing device 10, which is designed as a rotary splicer, is connected via a corresponding receiving device to the working unit housing 33 when the working unit 2 has an open yarn runway and is then connected to the working unit housing 33. or, if the working unit 2 has a closed yarn guide channel, it is positioned in a corresponding receiving housing of the yarn guide channel.

The thread splicing device 10 is a splicing prism with a pneumatically capable splicing passage 35 that splices the thread ends of the needle thread 31 and the thread ends of the bobbin thread 32, as will be described in more detail below. (Spleissprisma) 23, holding and untwisting tube 17 for mechanically preparing the thread ends of needle thread 31 or bobbin thread 32, thread clamping devices 37A, 37B, thread cutting devices 36A, 36B. It has a yarn handling device for neatly cutting the yarn to a predetermined length and a yarn gathering device 38 for positioning the yarn ends.

Typically, such a working unit 2 also includes a thread tensioner, a thread clearer with a connected thread cutting device, a paraffin applicator, a thread tension sensor and a bobbin thread sensor, not shown in detail in FIG. It has another device.

In such a working unit 2 the winding of the twill packages 15 takes place in each case in a winding device 24, which has in particular a package frame 28, which is pivoted. It is movably supported about an axis 22 and has a device for rotatably holding the tube of the twill package 15 .

The twill package 15, which is held freely rotatably on the package frame 28 during the winding process, has its surface in contact with, for example, a so-called yarn guide drum 14 and is frictionally entrained by it. Such a yarn guide drum 14 has yarn guide grooves in which the yarn to be wound is guided during the winding process to form winding layers which cross each other, forming a wound package. rolled up into.

Such yarn guide drums, however, are rather expensive and can only be produced with the "random winding" (Wilde Wicklung) winding method for twill packages. , grooveless package drive rollers can be used. In such a case, the traverse package is simply frictionally rotated by the package drive roller during the winding process, i.e. the traversing of the wound yarn is effected using a separate yarn traversing device. Such yarn traversing devices, for example with finger yarn guides, have been known for a long time in various embodiments, for example from DE 102004025519 A1, German patent application It is described in detail in DE 19858548 A1 (DE 19858548 A1) or DE 19820464 A1 (DE 19820464 A1).

FIG. 2 shows a thread splicing device 10 in the form of a rotary splicer in front view.

As shown, the yarn splicing device 10 comprises a splicing prism 23 arranged in the air distributor 18 and having a defined splicing channel 35 through which compressed air can be supplied. ing. The air distributor 18 with receiving bores for the holding and untwisting tubes 17 is surrounded by at least two rotatably supported control elements 41, 42, which control elements 41, 42 , respectively, can be determined by individual drives 39; 40 to apply force.

The control elements 41, 42 each have a toothing 51; 52 each with a pinion 45 arranged on the motor shaft of the associated individual drive 39; 40. are engaged. The individual drives 39; 40, for example in the form of stepper motors, are also connected via control lines to the work unit computer 29 of the relevant work unit 2 and are driven by this work unit computer 29 as required. Controllable.

The first control element 41 furthermore has a first switching projection 43 and a second switching projection 44 for operating the yarn handling devices 36, 37 located in the region of the yarn splicing device 10. there is The first control element 41 thus comprises, for example, two first switching projections 43, each of which has a thread cutting device 36A; 36B of the thread cutting device. connected and have two second switching lugs 44 via which respectively one connected thread clamping device 37A; 37B can be actuated. be.

At this time, as can be seen in particular from FIG. The holding device 19 itself is such that the thread handling devices 36, 37 are positioned in the vicinity of the exit area of the splicing passage 35 of the splicing prism 23 and the switching pins 27, 30 are held by the switching lugs 43, 44. is arranged so that it can be driven and controlled as required via the .

In an optional embodiment, i.e. if the yarn splicing device 10 comprises a cover element with which the splicing prism 23 can be closed during the splicing process, the first control element 41 can be provided with a further switching projection. It can have children (not shown). By means of this further switching prong, the cover element of the splicing prism 23 can, if desired, be controlled such that the splicing channel 35 of the splicing prism 23 is closed during the splicing process.

The second control element 42 has a jogger 38 which is cut to length by a yarn cutting device 36 and prepared in the holding and untwisting tube 17. The thread ends of 31 and bobbin thread 32 can be pulled out of the holding and untwisting tube 17 by means of a thread puller 38 and into the splicing channel 35 of the splicing prism 23 as required for the actual splicing process. It is shaped and arranged so that it can be positioned.

As can be seen from the drawing, the air distributor 18 and the control elements 41, 42 are arranged protected inside a support element 26, for example in the form of a sleeve, which, as already mentioned above: It can be fixed to the working unit housing 33 of the working unit 2 via a receiving device or is positioned in the receiving housing of the closed thread guide channel. At its outer edge 26a, the support element 26 protectively surrounds the splicing prism 23 and the control elements 41, 42 and in particular also supports the control elements 41, 42 in a freely movable or rotatable manner. there is

FIG. 3 shows the holding device 19 in the form of an angle segment 54 in detail in a perspective view.

As can be seen from the drawing, the holding device 19 has two support surface portions 34, 48, which are arranged at an angle α to each other. The angle α is in the range 110°-160°, preferably in the range 120°-130°.

A yarn cutting device 36 is then installed at a first support point 34a on the first support surface portion 34, whereas the adjacent second support surface portion 48 has a second support point 48a. supports the thread clamping device 37.

As is known per se, the thread cutting device 36 has a stationary cutting edge 46 and a movably supported cutting edge 47 to which the switching pin 27 is connected. This switching pin 27 corresponds in the installed state of the holding device 19 with a switching projection 43 arranged on the first control element 41 and on the cutting edges 46, 47 of the yarn cutting device 36. It serves to cut the intervening yarn ends to optimal and thus relatively short lengths.

A thread clamping device 37 fixed to the support surface 48 of the holding device 19 has a stationary clamping jaw 49 and a movably supported clamping jaw 50, the movably supported clamping jaw 50 having: A switching pin 30 is provided.

In the mounted state of the holding device 19, the switching pin 30 is acted upon by a switching projection 44 arranged on the first control element 41, so that the thread lying between the clamping jaws 49, 50 is forced. The ends are always securely fixed.

FIG. 4 shows an alternative embodiment of the bent holding device 19 described above.

As can be seen from the drawing, however, the holding device 19 is formed not as an angle element 54 but as a circular segment 53 . The arc member 53 then has a stamped first support surface portion 34 with a first support point 34a and a stamped second support surface portion 48 with a second support point 48a. , and the two support surface portions 34, 48, correspondingly arranged, serve to support a thread cutting device 36 or a thread clamping device 37. FIG. Both bearing surface portions 34, 48 of arc member 53 are also arranged at an angle α to each other, which angle α is selected in the range 110° to 160°, preferably in the range 120° to 130°. It is

Operation of the Yarn Splicing Device According to the Preferred Embodiments in a Working Unit Having a Yarn Runway Open to the Front Although it is known and will therefore not be described in detail, in the working unit 2 of the automatic twill winder 1, the running yarn is The winding operation is continuously monitored by the yarn clearer, which detects and notifies the operation unit computer 29 of each yarn irregularity.

The work unit computer 29 initiates a defined thread clearing cut as soon as required and the thread running during this thread clearing cut is cut by a thread cutting device located in the area of the thread clearer to cut the upper thread 31. and the bobbin thread 32.

The top thread 31 is then wound onto the surface of the twill package 15, which is rotatably held in the package frame 28 and is subjected to a braking moment, whereas the bobbin thread 32 is usually held in a so-called thread tensioner. .

The wound needle thread 31 is then received again in the twill package 15 for clearing off the defective thread section and for forming a new splice. That is, the suction nozzle 12 is swiveled upwards and its opening supplied with vacuum is positioned in the area of the surface of the cheese package 15, while the cheese package 15 is simultaneously slowly rotated in the unwinding direction. be done.

As soon as the suction nozzle 12 has received the thread end of the upper thread 31, using a thread cutting device (not shown) arranged in the area of the suction nozzle 12, the defective thread section is cut off and disposed of. .

The thread end of the needle thread 31, which is now defect-free, is then threaded by the suction nozzle 12 into the splicing channel 35 of the splicing prism 23 of the thread splicing device 10, the needle thread 31 being cut off or by the thread guide metal sheet. Between the clamping jaws 49, 50 of the upper thread clamping device 37B which is guided and which is also fixed to the holding device 19 and the cutting edge 46 of the lower thread cutting device 36A which is fixed to the further holding device 19; 47.

At the same time as the thread end of the upper thread 31 is retracted, or with a slight delay in time, the thread end of the lower thread 32 is also retracted. That is, the gripper tube 25 goes to the thread tensioner to pick up the thread end of the bobbin thread 32, which is normally fixed at the thread tensioner after a controlled thread break, and likewise moves the bobbin thread 32 to the thread splicing device 10. It is inserted into the splicing passage 35 of the splicing prism 23 . At this time, the bobbin thread 32 is also passed between the clamping jaws 49, 50 of the lower thread clamping device 37A and between the cutting edges 46, 47 of the upper thread cutting device 36B, at this time the lower thread The clamping device 37A and the upper thread cutting device 36B are likewise mounted on the holding device 19. FIG.

As soon as the upper thread 31 and the lower thread 32 are inserted into the splicing passage 35 of the splicing prism 23, the upper thread 31 and the lower thread 32 are mechanically fixed by the thread clamping devices 37A, 37B and the thread cutting device. 36A, 36B orderly cut to a predetermined length. That is, the work unit computer 29 causes the stepper motor 39 to actuate the toothing 51 of the first control element 41 via the pinion 45, thereby causing the first control element 41 to rotate somewhat in the direction R. work for During this rotational movement of the first control element 41, the first switching prong 43 and the second switching prong 44 are also moved, the first switching prong 43 and the second switching prong 44 moving along this Then, the yarn clamping devices 37A, 37B and the yarn cutting devices 36A, 36B are operated.

By corresponding actuation of the valves, the holding and untwisting tube 17 is then supplied with compressed air, so that the free thread ends of the needle thread 31 and the bobbin thread 32 enter the holding and untwisting tube 17. sucked in. Compressed air flowing through the tangential holes into the ring passage of the holding and untwisting tube 17 then serves to pneumatically prepare the yarn ends in a defined manner. That is, the thread ends of the upper thread 31 and the lower thread 32 sucked into the holding and untwisting tube 17 are sufficiently untwisted and short fibers are removed.

The neatly prepared thread ends of the top thread 31 and the bobbin thread 32 are then pulled out of the holding and untwisting tube 17 by the thread puller 38, and both thread ends can be oriented and pre-determined in opposite directions. It is positioned within the splicing passage 35 of the splicing prism 23 so as to have a good fit. That is, the work unit computer 29 drives the stepper motor 40 so that the second control element 42 is rotated somewhat in the direction A. FIG. During this rotational movement, the arms of the thread puller 38 respectively intersect the thread strands of the upper thread 31 and the lower thread 32 extending between the thread clamping devices 37A; 37B and the splicing passage 35 of the splicing prism 23, and At this time, the free yarn end is pulled out from the holding and untwisting tube 17 .

The thread ends of the top thread 31 and the bobbin thread 32 properly positioned within the splicing passage 35 of the splicing prism 23 are then air spliced. The operating unit computer 29 thus activates, for example, a solenoid valve, by means of which splicing air is blown into the splicing channel 35, which splicing air displaces the fibers of the two yarn ends, which were initially arranged approximately parallel to each other. They are entangled with each other and at this time form a spliced portion which is substantially the same as the original yarn.

The splicing process is thereby completed, and the cut yarn is repaired. The working unit 2 concerned can start the actual winding process.

REFERENCE SIGNS LIST 1 textile machine 2 working unit 3 spinning cop/empty tube conveying system 4 cop supply section 5 storage section 6 transverse conveying section 7 winding tube returning section 8 conveying tray 9 spinning cop 10 yarn splicing device 11 central control unit 12 suction nozzle 13 swivel axis 14 yarn guide drum 15 twill package 16 machine bus 17 holding and untwisting tube 18 air distributor 19 holding device 20 swivel axis 21 twill package conveying device 22 swivel axis 23 splicing prism 24 winding device 25 gripper tube 26 support element 26a outer edge of support element 27 switching pin 28 package frame 29 work unit computer 30 switching pin 31 needle thread 32 bobbin thread 33 work unit housing 34 first support surface portion 34a first support point 35 splicing channel 36 thread cutting device 37 yarn clamp device 38 yarn puller 39 individual drive device 40 individual drive device 41 first control element 42 second control element 43 first switching projection 44 second switching projection 45 pinion 46 cutting edge 47 cutting edge 48 Second Support Surface Portion 48a Second Support Location 49 Clamp Jaw 50 Clamp Jaw 51 Tooth Row 52 Tooth Row 53 Arc Member 54 Angle Segment AS Feeding Unit R Direction A Direction

Claims (6)

A yarn splicing device (10) for a textile machine (1), comprising:
a splicing prism (23) containing an air-supplyable splicing passageway (35);
a thread handling device (36, 37) spaced relative to said splicing prism (23), said thread handling device (36, 37) being the upper thread (31) or the lower thread, respectively; A thread clamping device (37A; 37B) for fixing the thread (32), and a thread cutting device (36A) for cutting the thread end of the needle thread (31) or the bobbin thread (32) to a predetermined length. 36B), in a yarn splicing device (10) comprising:
The thread splicing device (10) is embodied as a rotary splicer with at least one control element (41) with which the thread handling device (36, 37) can be actuated as required, the upper thread one holding device (19) is arranged on each side of said splicing channel (35) in the direction in which (31) and said bobbin thread (32) extends ,
comprising a first configuration and/or a second configuration;
In the first configuration,
Said holding device (19) has a first support point (34a) for fixing one of said thread cutting devices (36A, 36B), said first support point (34a) between the opening of said splicing passage (35) and the outer edge (26a) of a cylindrical support element (26) whose circumferential direction is the direction of rotation of said rotary splicer control element (41); The control element (41) and the splicing prismatic body (23) are arranged in the inner region when viewed from the extension direction of the cylinder of the support element (26),
In the second configuration,
Said holding device (19) comprises a first support surface portion (34) comprising a first support point (34a) for fixing said thread cutting device (36A; 36B) and said thread clamping device (37A; 37B) is formed as an angle segment (54) or arc member (53) with a second bearing surface portion (48) comprising a second bearing point (48a) for fixing said first The support surface portion (34) of the is positioned at an angle to said second support surface portion (48) such that said first support surface portion (34) and said second support surface portion (48) ) are adjacent along the direction of rotation of said control element (41) of said rotary splicer
A thread splicing device (10), characterized in that: In the second configuration,
said first support surface portion (34) with said first support point (34a) relative to said second support surface portion (48) with said second support point (48a): installed at an angle α selected in the range 110° to 160°,
A thread splicing device (10) according to claim 1. In the second configuration,
said holding device (19) is formed from a stamped element, each said first bearing surface portion (34) and said second bearing surface portion (48) being formed by a stamped area,
A thread splicing device (10) according to claim 1 or 2. In the second configuration,
One said thread cutting device (36A; 36B) is mounted at said first support point (34a) on said first support surface portion (34) and said second support surface portion (48). wherein one yarn clamping device (37A; 37B) is installed at the second support point (48a) in
Yarn splicing device (10) according to any one of claims 1 to 3. Said yarn cutting device (36A; 36B) has a stationary cutting edge (46) and a movably supported cutting edge (47), said movably supported cutting edge (47) having said connected to a switching pin (27) which can be exerted by a switching prong (43) of the control element (41),
A thread splicing device (10) according to claim 4. Said yarn clamping device (37A; 37B) for fixing said yarn comprises a stationary clamping jaw (49) and a movably supported clamping jaw (50), said movably supported clamp The jaw (50) comprises another switching pin (30) which can be exerted by means of a second switching lug (44) of said control element (41),
A thread splicing device (10) according to claim 5.

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