JP6930877B2 - Thread splicing equipment for working units of textile machines that manufacture twill-wound packages - Google Patents

Description

The present invention is a yarn splicing device for a working unit of a textile machine for manufacturing a twill-wound package, which has an air distributor, the air distributor having a connection hole for a compressed air pipeline and holding. It is provided with accommodating holes and a splicing prism for the combined and untwisted pipe, and the splicing prism has a splicing passage capable of supplying compressed air, and is spaced from the splicing prism, especially for thread cutting. The present invention relates to a thread splicing device, wherein a thread handling device such as a device, a thread clamping device and a thread aligner is arranged, and the thread handling device can be driven and controlled via a driving device.

As is known, such a yarn splicing device works to join the yarn ends by aerodynamic force, that is, by using such a yarn splicing device, a joint portion substantially the same as that of the original yarn can be obtained. The two thread ends can be rejoined by aerodynamic force. Such yarn splicing devices are used, in particular, in the working units of automatic twill winding winders and are typically used after interruptions in the winding process, such as after yarn breakage or after controlled yarn clearing cutting.

In order to ensure that the yarn splicing portion obtained in such a yarn splicing device has substantially the same appearance and substantially the same yarn strength as the original yarn, both yarn ends have air at each of these yarn ends. Before being spliced by force, it must be cut to the exact length, properly prepared and finally positioned within the splicing prism as specified. That is, such a thread splicing device includes a thread clamping device, a thread cutting device and a thread aligner, and more preferably has a holding / untwisting tube capable of supplying air and a splicing prism capable of supplying air. doing.

The use of such thread splicing devices has long been known, especially in the context of the operation of automatic twill winders, and is partially described in great detail in various patent specifications.

However, known thread splicing devices can be partially significantly different, especially with respect to drive devices for thread handling devices such as thread clamping devices, thread cutting devices, thread aligners or splicer covers.

For example, the thread splicing apparatus described in German Patent Application Publication No. 10224080 (DE 102 24 080 A1) and German Patent Application Publication No. 10224081 (DE 102 24 081 A1), respectively, supplies compressed air. It has a possible splicing prism and a holding and untwisting tube capable of supplying compressed air as well, in which the retaining and untwisting tube, as usual, with respect to the outlet of the splicing passage of the splicing prism. Positioned with some spacing and lateral offset.

In these known thread splicing devices, which have been rated as good in their own right, the drive of various thread handling elements of the thread splicing device is via a cam plate drive that is coupled to an external drive. Will be done. That is, a cam plate set is installed in the drive device housing of the splicer, and each cam plate of this cam plate set is connected to the thread handling element described above the thread splicing device via a lever rod. Has been done.

The cam plate set itself can be connected to the drive unit of the corresponding working unit via a plug-in coupling.

Thus, in these known yarn splicing devices, the thread handling element is driven by a drive unit specific to the working unit, and only the thread aligner is connected to a drive unit computer, preferably formed as a step motor. It has its own drive.

An equivalent yarn splicing device is also described in German Patent Application Publication No. 4420979 (DE 44 20 979 A1). Also in this known thread splicing device, only a restricted and rotatably supported thread aligner is connected to a unique drive device, whereas other thread handling elements of the thread splicing device are described in the present application. It is connected to a work unit specific drive, as is common as of the priority date.

However, the thread splicing device connected to the drive unit specific to the work unit has a serious drawback of having little flexibility in performing the movement of the thread handling element.

Known thread splicing equipment based on German Patent Application Publication No. 19610818 (DE 196 10 818 A1) comprises a control drum located within the drive housing of the splicer, with limited and rotatably supported. The control drum is fixed and rotatable using a connected reversible rotatable step motor.

The control drum has a plurality of variously formed groove trajectories, and the thread handling element of the thread splicing device is connected to each of these groove trajectories via a switching lever having a switching protrusion. There is.

That is, in this known thread splicing device, the switching function of the thread handling element is set by the formation of the groove trajectory, and can be called as needed by the appropriate drive control of the step motor.

However, the above-mentioned yarn splicing device has a considerably complicated structural configuration, and above all, the manufacturing cost is extremely high due to its relatively expensive control drum.

Another yarn splicing apparatus described in European Patent No. 1805094 (EP 1 805 094 B1), on the one hand, is capable of accurate measurement of the operation of the yarn handling element, and on the other hand, the manufacturing cost is German. It is configured to be significantly cheaper than the manufacturing cost of a known yarn splicing apparatus based on Patent Application Publication No. 19610818.

A thread splicing device known according to European Patent No. 1805094 has, for example, a control element, which is swivelly supported and has external teeth, the external teeth of which are defined. It meshes with the drive pinion of an individual drive that can be driven and controlled. The control element is coupled to the thread handling element of the thread splicing device via a lever rod so that the drive moment of the individual drive can be transmitted directly to the thread handling element at any time.

That is, in known thread splicing devices, the movement execution of the thread handling element is interrupted and then accurately continued for a preset time, at any position, if necessary, for example to perform another work process. Can be

Further, in a yarn splicing apparatus known by German Patent Application Publication No. 102015204469 (DE 10 2015 204 469 A1), the yarn handling element is driven by a plurality of step motors that can be individually driven and controlled.

Even in this known thread splicing device, the movement execution of the thread handling element can be precisely adjusted if necessary. However, due to the somewhat bulky structure of this known thread splicing device, the installation of such a thread splicing device is often extremely difficult given the limited delivery space in the working unit of the automatic twill winder. There is a drawback that it is.

The above known yarn splicing devices are used especially in automatic twill winders, and the working unit of this automatic twill winder has an almost open thread runway, i.e., in such automatic twill winders. The yarn drawn from the feed bobbin, which is preferably a spinning cup, is not covered by a protective device on the way to the containment package, that is, it is freely accessible.

In such a work unit, after the winding is interrupted, the winding package held in the package frame of the working unit, preferably the so-called needle thread wound on the surface of the twill winding package, uses a suction nozzle peculiar to the working unit. Is housed, delivered to the thread splicing device, and inserted into the splicing passage of the splicing prism of the thread splicing device.

In such a working unit, at about the same time, the bobbin thread is taken out from the feeding bobbin positioned at the feeding point by a so-called gripper pipe and similarly inserted into the splicing passage of the splicing prism, and in this splicing passage. The needle thread and bobbin thread are aerodynamically joined after being cut to a predetermined length and prepared.

However, in the context of automatic twill winders, it is also known that the working unit has a closed thread guide passage.

German Patent Application Publication No. 102010049515 (DE 10 2010 049 515 A1) describes, for example, a working unit of a textile machine for manufacturing a twill winding package, which is a plurality of parts surrounding a yarn runway. It has a thread guide passage made of, which comprises a containment housing or containment portion for a variety of thread monitoring devices and thread handling devices.

The thread guide passage, which is then completely closed, extends between the feed bobbin positioned at the feed location and the take-up device on which the take-up package is rotatably supported. Negative pressure can be partially supplied to the yarn guide passage when necessary, whereby a negative pressure flow having a definite and configurable flow direction is generated in the yarn guide passage.

A housing for the thread splicing device is incorporated in the thread guide passage, and the housing housing includes a first suction air pipe piece for sucking the bobbin thread connected to the feeding bobbin, and a twill winding package. A second suction air tube piece that sucks the needle thread wound up on the surface is connected.

However, given the extremely narrow space conditions in the area of the automatic twill winder work unit, the use of a thread splicing device in a work unit with a closed thread guide passage is more than in a work unit with an open thread runway. Becomes even more difficult.

Starting from the above-mentioned type of yarn splicing device, the problem underlying the present invention is to develop a thread splicing device that operates as specified and requires a relatively small space, that is, the yarn running path of the work unit. Regardless of the configuration, it is to configure a thread splicing device that enables a reliable joining of the needle thread and the bobbin thread as specified after the winding is interrupted.

According to the present invention, the present invention has an air distributor, and at least two control elements determined by individual drive devices and supported rotatably and rotatably are arranged in the air distributor. The control element is used to solve, in particular, a thread handling device such as a thread cutting device, a thread clamping device and / or a thread aligner, with a thread splicing device that can be driven and controlled as needed. Each thread handling device preferably has one device each for processing the needle thread and the bobbin thread. Therefore, for example, the thread cutting device may have a first thread cutting device for cutting the needle thread and a second thread cutting device for cutting the bobbin thread. The thread clamp device and the thread aligner may be configured in a suitable manner.

Suitable configurations of the present invention are described in the dependent claims.

The configuration of the thread splicing device according to the present invention has the advantage that the space required for the thread splicing device is extremely limited, in particular by configuring and arranging the control elements as rotatably supported devices. That is, a device that saves a lot of space is used instead of the conventional bulky drive mechanism that drives and controls the thread cutting device and the thread clamping device or the thread aligner.

The thread splicing device configured as in the present invention can be suitably used in both a work unit having an open thread runway and a work unit having a closed thread guide passage.

In a preferred embodiment, each control element has a dentition, which meshes with a pinion of an individual drive formed as a step motor.

The control element thus formed can be accurately positioned by the step motor, and as a result, the connected device can be reliably driven and controlled at any time. Further, the control element used has a simple structure and can be manufactured at a relatively low cost. In addition, the control elements used have a long service life and are relatively insensitive to dirt.

Preferably, the first control element has first and second switching protrusions that actuate a defined and correspondingly arranged thread handling device, and more preferably the first switching protrusion. The second switching protrusion may be arranged and configured to operate the thread cutting device and to operate the thread clamping device. Using the control protrusion, the thread cutting device or thread clamping device always ensures that the thread end to be prepared for the subsequent splicing step is always fixed as specified and cut to a specified length as specified. Drive control is possible.

In another or alternative preferred embodiment, the first control element has a switching protrusion that activates a cover element that closes the splicing prism during the splicing process.

Such closure of the splicing prism during the splicing process has been found to be advantageous in certain heavier yarn materials and / or in smaller yarn thicknesses. This is because the installed cover element prevents the splicing air stream from blowing upwards out of the splicing prism at the end of the thread to be spliced.

Preferably, a thread aligner is connected to the second control element, which is previously cut to a predetermined length by a thread cutting device and a thread clamping device and processed in a holding and untwisting tube. Both yarn ends work to be positioned within the splicing passage of the splicing prism as specified.

That is, the thread aligner pulls both thread ends into the splicing aisle, with both thread ends oriented in opposite directions, but parallel to each other and with a preset overlap in the splicing aisle. Positioned and allowed to be spliced by aerodynamic force.

In another preferred embodiment, each step motor is connected to the work unit computer of the work unit via a control line and is determined and drive controllable by the work unit computer. That is, using a step motor, the rotational movement of the control element can be accurately preset at any time, whereby the thread handling device always operates as specified.

In another preferred embodiment, the air distributor is a centrally located compressed air conduit that supplies splicing air into the splicing passage of the splicing prism and a compressed air supply that supplies air to the holding and untwisting tubes. It is connected to the pipeline and has a storage hole for holding and untwisting pipes. That is, the compressed air pipeline arranged in the center is connected to the splicing passage of the splicing prism through the connecting hole to which it belongs, whereas the compressed air supply pipeline is held and solved through the connecting hole. It is connected to the ring passage for the twisted pipe. The compressed air line or the compressed air supply line arranged in the air distributor always accurately corresponds to the connection hole to which the air distributor belongs in the mounted state. That is, replacing a thread splicing device that no longer corresponds to the imposed requirements with a new thread splicing device is not a great hassle for the operator.

Preferably, the air distributor and control element are protected and disposed within a sleeve-shaped mounting element, which mounting element is secured to the working unit housing via an accommodating device. In particular, such configurations can sufficiently eliminate damage to the control element due to external influences, such as inadvertent mechanical contact, thereby ensuring orderly operation of the yarn splicing device. It has the advantage of being able to.

Next, the present invention will be described in more detail with reference to the embodiments shown in the drawings.

It is a side view which shows roughly the work unit of the automatic twill winding winder in the winding interruption, and which includes the thread splicing apparatus configured as according to this invention. It is a side view which shows the thread splicing apparatus which concerns on this invention by a partial cross section. It is a top view of the thread splicing apparatus shown in FIG.

FIG. 1 schematically shows a side view of a working unit 2 of a textile machine 1 that manufactures a twill winding package in an embodiment of an automatic twill winding winder.

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

In these working units 2, for example, a feeding bobbin, which is a spinning cup 9 manufactured in a ring spinning machine (not shown) placed in front of the manufacturing process, is unwound into a large volume twill winding package 15 and twilled. After its completion, the winding package 15 is delivered to a machine-length twill winding package transfer device 21 using an automatically actuated service assembly (also not shown).

Such an automatic twill winding winder 1 usually further has a central control unit 11, which is connected to the work unit computer 29 of each work unit 2 via, for example, a mechanical bus 16. ing.

In an embodiment, the automatic twill winder 1 further comprises a machine-specific replenishment device (Logistikeinrichtung) formed as a spinning cup / empty tube transfer system 3, of which the replenishment device, however, is simply shown in FIG. Only the cup supply section 4, the reversibly driveable storage section 5, the lateral transport section 6 leading to the take-up unit 2, and the take-up tube return section 7 are shown.

In the cup / winding tube transport system 3, the spinning cup 9 or the empty tube vertically oriented and positioned on the transport pan 8 circulates.

At this time, the spinning cups 9 supplied through the cup supply section 4 and interim stored in the storage section 5 are at the feeding position AS located at the height of the work unit 2 in the area of the lateral transport section 6, respectively. , It is rewound into a large volume twill winding package 15.

The individual work units 2 therefore have a variety of devices that ensure the orderly operation of the work units 2, although only abbreviated as they are known.

These devices are, for example, a suction nozzle 12, a gripper tube 25, and a thread splicing device 10.

At this time, the suction nozzle 12, which is restricted and rotatably supported around the swivel axis 13, accommodates the needle thread 31 wound on the surface of the twill winding package 15 after the winding is interrupted, and delivers it to the thread splicing device 10. be able to.

The gripper tube 25, which is restricted and rotatable about the swivel axis 20, is used to handle the bobbin thread 32 connected to the spinning cup 9 when winding is interrupted, that is, to similarly deliver to the thread splicing device 10. NS.

The thread splicing device 10 is connected to the work unit housing 33 via a corresponding accommodating device 50 and, as usual, is arranged slightly retracted with respect to the regular thread runway.

As will be described in detail below with reference to FIGS. 2 and 3, the thread splicing device 10 can be operated in an aerodynamic manner in which the thread end of the needle thread 31 and the thread end of the bobbin 32 are spliced together. It has a splicing prismatic body (Spleisspisma) 34 and a holding and untwisting tube 17 that mechanically prepares the yarn end portion of the needle yarn 31 or the bobbin yarn 32.

Further, in the area of the thread splicing device 10, a thread handling device such as a thread clamp device 37A, 37B, a thread cutting device 36A, 36B, and a thread aligner 38 is arranged.

Usually, such a working unit 2 is not further shown in detail in FIG. 1, such as a thread tensioner, a thread clearer with a connected thread cutting device, a paraffin coating device, a thread tension sensor and a bobbin thread sensor. It is equipped with another device.

The winding of the twill winding package 15 is performed by the winding device 24, and the winding device 24 particularly has a package frame 28, which is movably supported around the swivel axis 22. It has a device for rotatably holding the winding tube of the twill winding package 15.

The twill-wound package 15, which is held freely rotatably in the package frame 28 during the winding process, has its surface in contact with, for example, the so-called thread guide drum 14, and is taken by friction by the thread guide drum 14.

Such a yarn guide drum 14 has a yarn guide groove, and in the yarn guide groove, the yarn to be wound is guided during the winding process to form a winding layer intersecting with each other, and the winding package is formed. It is rolled up in.

However, such thread guide drums are relatively inexpensive as an alternative to thread guide drums, as they are fairly expensive and can only be manufactured in a twill-wound package with a "random winding" winding method. , A grooveless package drive roller can be used.

In such a case, the twill winding package is simply rotated by friction by the package drive roller during the winding process, that is, the twill swing of the wound yarn is performed using a separate thread twill swing device.

Such thread twill swinging devices, including, for example, finger thread guides, have long been known in various embodiments, eg, German Patent Application Publication No. 102004025519 (DE 10 2004 025 519 A1), Germany. It is described in detail in Japanese Patent Application Publication No. 19858548 (DE 198 58 548 A1) and / or German Patent Application Publication No. 19820464 (DE 198 20 464 A1).

FIG. 2 shows a side view of a thread splicing device 10 configured as in the present invention, which is partially cross-sectioned, and the thread splicing device 10 has an air distributor 18 as a central constituent member. The air distributor 18 is provided with connection holes 19 and 23 for compressed air pipelines 26 and 27, and accommodating holes 30 for holding and untwisting pipes 17.

The air distributor 18 is fixed to the mounting plate 49 of the mounting element 48 formed in a sleeve shape, and is connected to the working unit housing 33 of the working unit 2 via the accommodating device 50.

Splicing air can be blown into the splicing passage 47 of the splicing prism 34, if necessary, through the centrally arranged connection hole 23 and the compressed air conduit 26 belonging to the center. Air is supplied to the holding / untwisting pipe 17 arranged in the accommodating hole 30 through the connecting hole 19 and the compressed air supply pipe line 27. That is, in the subsequent splicing process, the yarn end portion arranged in the holding / untwisting pipe 17, which is desired to be spliced in almost the same manner as the original yarn, is passed through the compressed air supply pipe 27. It is neatly prepared for the splicing process by blowing compressed air.

In particular, as can be clearly seen from FIG. 3, at least two control elements 41 and 42 rotatably supported are arranged in the air distributor 18 of the thread splicing device 10, and these control elements 41 and 42 are respectively arranged. , Individual drive device 39; 40, and can be determined and driven. That is, the control elements 41 and 42 each have dentitions 51; 52, and these dentitions mesh with the pinions 45A and 45B arranged on the motor shafts of the individual drive devices 39; 40 to which they belong.

The individual drive devices 39; 40, preferably formed as step motors, are then connected to the work unit computer 29 of the corresponding work unit 2 via the control lines 46A and 46B, respectively, and the work unit computer. It can be controlled by 29 as needed.

The control element 41 further includes switching protrusions 43, 44 that actuate a thread handling device (not shown in FIG. 2 for the sake of clarity) installed in the area of the thread splicing device 10.

A thread aligner 38 is arranged on the control element 42.

The first control element 41 comprises, for example, two first switching protrusions 43, each to which one thread cutting device 36A; 36B is connected, and has two second switching protrusions 44. Each of the two connected thread clamp devices 37A; 37B can be actuated via both of the second switching protrusions 44.

In an optional embodiment, i.e., where the thread splicing device 10 has a cover element capable of closing the splicing prism during the splicing process, the first control element 41 is yet another. It may be provided with a switching prism.

This alternative switching protrusion (not shown) allows the cover element of the splicing prism to be controlled so that the splicing prism is closed during the splicing process, if desired.

In the thread aligner 38 connected to the second control element 42, the thread end portion prepared in the holding and untwisting tube 17 during the splicing process is spliced by the arm of the thread aligner 38, if necessary. It is formed and arranged so that it can be positioned within the splicing passage 47 of the body 34.

As shown in FIG. 2, the air distribution body 18 and the control elements 41 and 42 are protected and arranged inside the sleeve-shaped mounting element 48, and the mounting element 48 is arranged via the accommodating device 50. Can be fixed to the work unit housing 33.

FIG. 3 shows a plan view of the thread splicing device 10 according to the present invention.

As can be seen from the drawing, the yarn splicing device 10 has an air distributor 18 as a central component, and the air distributor 18 particularly includes a storage hole 30 for holding and untwisting pipe 17 and compression. It is provided with connection holes 19 and 23 for supplying air.

A splicing prism 34 is arranged in the air distributor 18 having a circular outer peripheral portion, and the splicing prism 34 has a splicing passage 47 capable of supplying air through a connection hole 23. There is.

Control elements 41 and 42 are supported on the outer peripheral portion of the air distributor 18 so as to be restricted and rotatable, and these control elements 41 and 42 are respectively part of the outer peripheral portion of the dentition 51; 52. have. The dentition 52 of the control element 42 meshes with, for example, a pinion 45B arranged on the motor shaft of the individual drive device formed as the step motor 40. At this time, the step motor 40 itself is connected to the work unit computer 29 of the corresponding work unit 2 via the control line 46B. The control element 42 further comprises a thread aligner 38, which positions both thread ends to be spliced in order within the splicing passage 47 of the splicing prism 34, if necessary. ..

The control element 41 has a dentition 51, and the dentition 51 meshes with a pinion 45A arranged on the motor shaft of the step motor 39, and the step motor 39 itself is a work unit via a control line 46A. It is connected to the work unit computer 29 of 2.

The control element 41 further includes first and second switching protrusions 43, 44, which are used to operate the thread cutting devices 36A, 36B or the thread clamping devices 37A, 37B. Work to operate.

At this time, the thread cutting device 36A; 36B is driven and controlled via both the first switching protrusions 43, whereas both the second switching protrusions 44 operate the thread clamping device 37A; 37B. Used for.

The function of the yarn splicing device according to the present invention is not described in detail because it is known, but in the work unit 2 of the automatic twill winding winder 1, the running yarn is continuously monitored by the yarn clearer during the winding operation, and the yarn is continuously monitored by the yarn clearer. The clearer detects each thread irregularity and notifies the work unit computer 29.

The work unit computer 29 immediately starts the fixed thread cutting when necessary, and the thread running at the time of thread cutting is the needle thread 31 and the bobbin thread 32 by the thread cutting device arranged in the area of the thread clearer. It is separated into. The needle thread 31 is then wound around a twill-wound package 15 rotatably held in the package frame to which a braking moment is applied, whereas the bobbin thread 32 is usually held in a so-called thread tensioner.

The needle thread 31 wound up in the twill winding package 15 is then re-accommodated for clearing removal of the defective thread portion and for the formation of a new thread splice. That is, the suction nozzle 12 is swiveled upward, and the opening capable of supplying negative pressure is positioned in the area of the surface of the twill-wound package 15, at which time the twill-wound package 15 is slowly rotated in the feeding direction at the same time. ..

As soon as the suction nozzle 12 accommodates the needle thread 31, the defective thread portion is separated and disposed of by using a thread cutting device (not shown) arranged in the area of the suction nozzle 12.

The now defect-free needle thread 31 is inserted into the splicing passage 47 of the splicing prism 34 of the thread splicing device 10 by the suction nozzle 12, and the needle thread 31 is then cut off or guided by the thread guide metal sheet. Further, it is inserted into the upper thread clamping device 37B and between the tools of the lower thread cutting device 36A.

The bobbin thread 32 is also accommodated at the same time as or with some time delay in accommodating the needle thread 31. That is, the gripper tube 25 goes to the thread tensioner for the bobbin thread 32, which is normally fixed in the thread tensioner after the controlled thread cutting, and similarly takes the bobbin thread 32 to the splicing prism 34 of the thread splicing device 10. Is inserted into the splicing passage 47 of the. At this time, the bobbin thread 32 is further inserted into the lower thread clamping device 37A and the upper thread cutting device 36B.

As soon as both threads 31 and 32 are inserted into the splicing passage 47 of the splicing prism 34, both threads 31 and 32 are mechanically fixed by the thread clamping devices 37A and 37B and the thread cutting device 36A, It is cut to a predetermined length in an orderly manner by 36B.

That is, the work unit computer 29 works so that the step motor 39 operates the switching tooth ring 51 of the control element 41 via the pinion 45A, whereby the control element 41 is rotated in the direction R to some extent. During this rotational movement of the control element 41, the first and second switching protrusions 43, 44 are also moved, and both switching protrusions 43, 44 are then thread clamp devices 37A, 37B and thread cutting devices 36A, 36B. To operate.

Then, by appropriate control of the valve, compressed air is supplied to the holding and untwisting tube 17 through the connection hole 19, whereby the free yarn ends of the needle yarn 31 and the bobbin yarn 32 are held and untwisted. It is sucked into the tube 17. The compressed air flowing into the ring passage of the holding and untwisting tube 17 through the tangential hole further works to prepare the yarn end portion by aerodynamic force as specified. That is, the yarn ends of the needle yarn 31 and the bobbin yarn 32 sucked into the holding / untwisting tube 17 are sufficiently untwisted and short fibers are removed.

The prepared yarn end is then pulled out of the holding and untwisting tube 17 by the yarn aligner 38, and the splicing prism 34 so that both yarn ends have proper orientation and a prescribed fit. Is positioned in the splicing passage 47 of the. That is, the work unit computer 29 drives and controls the step motor 40 so that the control element 42 is rotated in the direction A to some extent. During this rotational movement, the arms of the thread aligner 38 intersect the thread strands of the needle thread 31 and the bobbin thread 32 extending between the thread clamp device 37A; 37B and the splicing prism 34, respectively, and at this time the free thread. The end is pulled out from the holding and untwisting tube 17.

The thread ends of the needle thread 31 and the bobbin thread 32, which are properly positioned in the splicing passage 47 of the splicing prism 34, are then spliced by air substantially equal to the original thread. That is, the work unit computer 29 drives and controls a solenoid valve (not shown) via a signal line, whereby splicing air is sent into the splicing passage 47 through one of the compressed air pipelines 26 and the connection hole 23. This splicing air entangles the fibers at both thread ends with each other, initially arranged approximately parallel to each other, and forms a thread splicing that is approximately the same as the original thread.

The yarn splicing process is thus completed and the corresponding working unit 2 can start the winding process.

Claims (8)

A yarn splicing device (10) for a work unit (2) of a textile machine (1) that manufactures a twill-wound package, which has an air distributor (18), wherein the air distributor (18) has an air distributor (18). , A connection hole (19, 23) for a compressed air conduit (26, 27), a storage hole (30) for a holding and untwisting tube (17), and a splicing prism (34). The body (34) has a splicing passage (47) capable of supplying compressed air, and is spaced from the splicing square column (34), particularly a thread cutting device (36A, 36B) and a thread clamp. In the thread splicing device (10), where a thread handling device such as the device (37A, 37B) and the thread aligner (38) is arranged, the thread handling device can be driven and controlled via the drive device.
At least two annular rings defined and driveable by individual drive devices (39, 40) and rotatably supported in the circumferential direction of the air distributor (18) on the outer peripheral portion of the air distributor (18). The control elements (41, 42) of the above are concentrically arranged, and the control elements (41, 42) are used in particular, the thread cutting device (36A, 36B), the thread clamping device (37A, 37B) and the above. / Or the work unit (2) of the textile machine (1) for manufacturing the twill-wound package, wherein the thread handling device such as the thread aligner (38) can be driven and controlled as needed. Thread splicing device for (10). The control elements (41, 42) each have a dentition (51, 52), and the dentition (51, 52) is a pinion of the individual drive device (39, 40) formed as a step motor. The thread splicing device (10) according to claim 1, which meshes with (45). The first control element (41) has first and second switching protrusions (43,44) that actuate the thread handling device that has been determined and correspondingly arranged, in particular the first. The switching protrusion (43) of the above is for operating the thread cutting device (36A, 36B), and the second switching protrusion (44) is for operating the thread clamping device (37A, 37B). The yarn splicing apparatus (10) according to claim 1 or 2, which is arranged and configured in. The thread splicing apparatus (10) according to claim 3, wherein the first control element (41) has a switching protrusion that activates a cover element that closes the splicing prism (34) during a splicing step. .. The thread splicing device (10) according to any one of claims 1 to 4, wherein the thread aligner (38) is connected to the second control element (42). The formed as scan Teppumota separate drive (39, 40) respectively, the control lines (46A, 46B) be connected to the through working unit (2) of the working unit computer (29), said working unit The thread splicing device (10) according to any one of claims 1 to 5, which is determined by a computer (29) and can be driven and controlled. The air distributor (18) includes a compressed air pipeline (26) arranged in the center for supplying splicing air in the splicing passage (47) of the splicing prism (34), and a holding / untwisting pipe. The first aspect of claim 1, wherein the (17) is connected to a compressed air supply pipe (27) for supplying air, and has an accommodating hole (30) for the holding / untwisting pipe (17). Thread splicing device (10). The air distributor (18) and the control elements (41, 42) are protected and arranged inside a sleeve-shaped mounting element (48), which is a containment device (50). The thread splicing device (10) according to claim 1, which is fixed to the work unit housing (33) via.

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