JP7060404B2 - Thread splicing device for working units of automatic twill winder - Google Patents

Description

The present invention is a thread splicing device for a working unit of an automatic twill winding winder that splics two thread ends without a knot, and comprises a splicing prism, wherein the splicing prism is spliced. The present invention relates to a yarn splicing apparatus having a splicing passage that is open upward during the process and is capable of supplying air force, in which the yarn end portion is positioned during the splicing process.

The use of yarn splicing devices for aerodynamic yarn splicing in the context of the operation of working units of textile machines that manufacture twill-wound packages, especially automatic twill-wound winders, has long been known and has many patent specifications. It is described in detail in.

Using such a yarn splicing device, a yarn splicing portion that is substantially equal to the original yarn can be obtained at two yarn ends generated after winding interruption such as after yarn breakage or after controlled yarn clearing cutting. It can be spliced again by aerodynamic force.

Therefore, after the winding is interrupted, the so-called needle thread wound on the surface of the twill winding package held in the package frame of the work unit is housed by using the suction nozzle peculiar to the work unit, and the yarn splicing device is used. Splicing It is inserted into the splicing passage of the prism.

At about the same time, and also by the gripper tube, the so-called bobbin thread is also summoned from the feeding bobbin positioned at the feeding point and similarly inserted into the splicing passage of the splicing prism, in which the needle thread and the bobbin thread Is finally spliced by aerodynamic force.

In order to ensure that the thread splicing portion generated at this time has almost the same appearance and the same thread strength as the original thread, however, both thread ends are preliminarily cut to an exact predetermined length and prepared in an orderly manner. It must be spliced cleanly by aerodynamic force. This means that such a thread splicing device not only has a thread clamp and thread cutting device and an aerodynamically capable holding and untwisted tube, but also has a splicing prism with an aerodynamically available splicing passage. It means that you also have a body.

When operating such aerodynamically actuated yarn splicing equipment, however, various problems often occur during the splicing process.

The splicing air blown into the splicing passage of the splicing prism through the splicing air nozzle arranged in the tangential direction is not only a rotational flow that swirls the yarn end portion to form a yarn splicing portion, but also an axial direction. It also has a flow component of, which attempts to move the yarn end axially towards the splicing passage outlet, which is against yarn splicing in a variety of yarn materials. May have an inconvenient effect.

Rotating currents also often create difficulties in a wide variety of yarn materials. That is, the end of the yarn to be spliced is not swirled by the rotational flow during the splicing process only for the formation of the splice, but the rotational flow is out of the splicing passage of the splicing prism. It also forms a relatively large thread balloon that swings out, which also has a very detrimental effect on the splicing process as well.

Thread splicing devices have already been developed that differ in terms of the width of the splicing prism and / or the angular position of the splicing passage of the splicing prism in order to adapt the thread splicing device to the thread material as well as possible. Has been done.

As is known in the working unit of the automatic twill winder, different yarn materials are processed one after the other or at the same time over time, and these yarn materials are treated with respect to their preparation and as suggested above. Since it often imposes really different demands on the splicing process, it is usually not possible to prepare different yarn splicing equipment, each adapted for one yarn material, in the context of the working unit of the automatic twill winder. Often.

In these known thread splicing devices, the splicing prism is usually mounted in the splicing head or interchangeably with the splicing head.

The splicing prisms used, respectively, are then different from each other, often with respect to their width and the angular position of their splicing passages, in relation to the thread material to be treated, as already suggested above.

In practice, for example, a splicing prism with a splicing passage extending at an angle of 20 ° with respect to the normal thread path of the working unit and a width of 13 mm is often used. However, splicing prisms with a splicing passage arranged at an angle of 16.5 ° and a width of 16 mm are also used. Further, a splicing prism having a splicing passage arranged at an angle of 13.5 ° and having a width of 20 mm is known.

Such yarn splicing equipment, which can be configured according to the yarn material to be processed, has been found to be good in day-to-day operation, however, it can always guarantee an orderly yarn splicing in each new yarn set. In order to do so, it has a major drawback that it is necessary to stock an extremely large amount of various splicing prisms.

Further, in such a thread splicing device, there is always the risk that the wrong member will be inadvertently attached or the member will be improperly attached during the modification procedure. In both cases, the results for the thread splicing that can then be formed are extremely inconvenient.

Therefore, an object of the present invention is to develop a yarn splicing apparatus capable of quickly and relatively easily responding to a new yarn material when the yarn material changes, starting from the yarn splicing apparatus of the type described above. .. That is, it is desired to provide a yarn splicing device that can easily meet the needs of new yarn materials.

In order to solve this problem, in the configuration of the present invention, the splicing prism is supported so as to be movable and adjustable, and the angle position of the central axis of the splicing passage of the splicing prism is the angle of the normal thread path of the working unit. It is designed to be adjustable in terms of position.

A preferred embodiment of the invention is the subject of the dependent claims.

The configuration of the yarn splicing apparatus according to the present invention has, in particular, the advantage that the yarn splicing apparatus configured in this way can always meet all the needs that may arise when the yarn material changes, quickly and without problems. are doing. That is, when the yarn splicing apparatus according to the present invention is used, various different splicing prisms can be prepared so that a yarn splicing apparatus that works differently can be prepared without relatively laborious modification when the yarn material is changed. There is no need to stock a large amount of body.

In order to be able to optimally cover the various requirements that arise when the yarn material changes, only a few adjustment tasks that are relatively simple and uncomplicated are required, and such adjustment tasks are not very skilled. It can also be carried out by no operator.

That is, the splicing prism is movably and adjustablely supported on a stationary air distributor, and the angular position of the central axis of the splicing passage of the splicing prism is relative to the angular position of the normal thread path of the working unit. For yarn splicing equipment that is designed to be adjustable, the time required for optimal fit of the yarn splicing equipment during changes in yarn material is relatively short. Correspondingly, the machine stop time of the automatic twill winding winder, which is inevitable when the yarn material changes, is also the shortest.

As a result, the yarn splicing apparatus according to the present invention can easily guarantee the optimum work result at all times, and moreover, when the yarn material is changed, the remodeling work which is relatively large-scale and takes time as usual is performed. unnecessary.

In a preferred embodiment, the splicing prism is further rotatably supported around a splicing center.

With such a configuration, it is not a great burden on the operator to constantly rotate the splicing prism according to the change of the thread material and to optimally adjust the angular position of the splicing passage to the existing thread material each time. Is guaranteed.

That is, on the one hand, it is guaranteed that an orderly yarn splicing portion is always formed, and on the other hand, however, the yarn end portion and the spliced yarn are guaranteed to be handled without problems.

At any angle position of the splicing passage that is adjusted in relation to the thread material, problem-free insertion of the thread end to be spliced and problem-free removal of the spliced thread are guaranteed.

In a preferred embodiment, for example, the splicing prism is fixed on a rotatably supported bearing device, the bearing device having a locking element, the locking element being air-distributed. In cooperation with the corresponding locking recesses placed in the body, it allows for a fixed stepwise adjustment of the angular position of the splicing passage of the splicing prism.

The locking element can then be formed, for example, by holes arranged in the bearing device, in which a pressing ball pressed by the spring element is provided. The locking recesses to which they belong are arranged in a partial circular shape and are processed in the air distribution body.

That is, in order to position the splicing passage of the splicing prism at a fixed angular position, the pressing ball simply locks the bearing device in which the splicing prism is arranged into the locking recess in the air distributor. It only needs to be rotated to, at which time the desired angular position of the splicing passage is accurately preset by the locking recesses.

In an alternative embodiment, however, it is also possible to use an adjustment gauge, i.e. an instrument that allows stepless adjustment of the angular position of the splicing passage, when adjusting the angular position of the splicing passage of the splicing prism. Is.

Also by using such an adjustment gauge, it is easily possible to always position the splicing prism so that the splicing passage accurately occupies the desired angular position.

Regardless of the device used to accurately position the splicing passages of the splicing prism, in a preferred embodiment the bearing device is further cut through by a fixing screw corresponding to the thread in the air distributor. have. That is, the rotatably supported bearing device that holds the splicing prism shall be fixed through the notch placed in the bearing device with screw bolts corresponding to the threaded holes in the air distributor. Can be done.

Such a screw coupling device is a fixing device that has been found to be good in mechanical structure, and the fixing device is not only easy to handle, but also the splicing prism, and thus the splicing prism. It also ensures that the splicing passage stays in the adjusted position each time.

Further, the angle between the central axis of the splicing passage and the normal thread path of the working unit is such that it is less than 30 °.

In a preferred embodiment, this adjustable angle in relation to the yarn material is 0 ° to 20 °.

Appropriate experiments have shown that such angular positions provide sufficient coverage for all conventional yarn materials. That is, for coarse yarn materials, splicing prisms with splicing passages having angular positions of less than 15 °, such as 13.5 °, are often utilized. On the other hand, in delicate thread materials, the angular position of the splicing passage is often a value greater than 16.5 °, for example 20 °.

Next, further details of the present invention will be described with reference to the embodiments shown in the drawings.

It is a side view which shows one working unit of the automatic twill winding winder provided with the yarn splicing apparatus configured as the present invention. A thread splicing device formed as of the present invention with a splicing prism, the splicing prism is an air distributor of a working unit of an automatic twill winder via a bearing device supported for movement adjustment. The bearing device is positioned so that the splicing passages of the splicing prism are arranged at an angle α = 20 ° with respect to the normal thread path of the working unit. It is a top view which shows the apparatus. It is a figure which shows the air distribution body which was shown in FIG.

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

In practice, such automatic twill winder 1s are arranged side by side in rows between frames at both ends (not shown), usually similarly formed, in a plurality of such manners. It has a working unit 2.

In these working units 2, often referred to in the industry as take-up units, the feed bobbins, which are spinning cups 9 with relatively little yarn material, manufactured, for example in ring spinning machines, are in large volume twill winding packages 15. Rewound.

After the production of the twill-wound package 15, the twill-wound package 15 is delivered to the twill-wound package transfer device 21 having a machine length, and is conveyed by the twill-wound package transfer device 21 to a package charge station arranged on the end side of the machine.

In the embodiment, the automatic twill winding winder 1 further includes a machine-specific replenishment device (Logistikeinrichtung) formed as a spinning cup and an empty tube transfer system 3, and among the spinning cup and the empty tube transfer system 3, FIG. 1 simply shows a cup supply section 4, a reversibly driveable storage section 5, a lateral transport section 6 leading to the take-up unit 2, and a winding tube unwinding section 7.

During the winding operation, in the spinning cup and the empty pipe transport system 3, the spinning cup 9 or the empty pipe is arranged vertically oriented on the transport pan 8 and circulates.

The spun cups 9 supplied through the cup supply section 4 and initially intermediately stored in the storage section 5 are, at this time, the feeding points located at the height of the work unit 2 in the region of the lateral transport section 6, respectively. The yarns positioned in the AS and then rewound into a large volume twill winding package 15 in which the running yarns are simultaneously monitored for yarn defects during the winding process and such yarn defects are in some cases immediately cleared. Will be removed.

The individual working units 2 therefore have a variety of devices that ensure the orderly operation of these working units 2, as is known and therefore simply illustrated in FIG.

Such a work unit 2 includes, for example, a thread processing device or a thread handling device such as a thread tensioner, a thread clearer to which a thread cutting device is connected, a paraffin processing device, a thread tension sensor, and a bobbin thread sensor, respectively. ..

The working unit 2 of such an automatic twill winding winder 1 further has a suction nozzle 12, a gripper tube 25, and a thread splicing device 10, respectively. Further, such an automatic twill winding winder 1 usually often 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. Has been done.

As can be further seen from FIG. 1, the working unit 2 further has a winding device 24 for winding the twill winding package 15, and the winding device 24 particularly has a package frame 28. The package frame 28 is movably supported around the swivel axis 22 and includes a device for rotatably holding the winding tube of the twill winding package 15.

During the take-up process, the twill-wound package 15 held rotatably in the package frame 28 is mounted on its surface, for example, on a so-called driveable thread guide drum 14, by friction by the thread guide drum 14. Be taken away.

As is known, such a yarn guide drum 14 has a so-called yarn guide groove, so that the yarn wound during the winding process is further wound so that the yarn wound in the winding package intersects with each other. You will be guided to form a stratification.

However, instead of the thread guide drum, it is also possible to use a grooveless package drive roller, which simply rotates the twill-wound package by friction during the take-up process.

In such a case, the twill swing of the thread wound on the twill winding package 15 is performed by using, for example, a separate thread twill swing device provided with a finger thread guide.

The suction nozzle 12, which is restricted and rotatably supported around the swivel axis 13, accommodates and splics the thread end portion of the needle thread 31 wound on the surface of the twill winding package 15 after the winding is interrupted. It is used when it is desired to deliver it to the device 10.

Similarly, the thread end portion of the bobbin thread 32 connected to the spinning cup 9 is handled by the gripper tube 25 which is restricted and rotatable about the swivel axis 20 after the winding is interrupted. That is, the gripper tube 25 takes on the thread end portion of the bobbin thread 32 fixed in the normal thread tensioner, and similarly delivers the bobbin thread 32 to the thread splicing device 10.

As shown in FIGS. 2 and 3, the thread splicing device 10, which is arranged somewhat retracted with respect to the normal, i.e., the thread path 30 occurring during the winding process, is a so-called air distribution. Arranged on the body 17, the air distributor 17 is connected to the housing 33 of the working unit 2 via a corresponding accommodating device (not shown).

Further, as shown in FIGS. 2 and 3, holding and untwisting pipes 18 and 19 are further inserted in the air distributor 17, and in these holding and untwisting pipes 18, 19 above. The yarn ends of the yarn 31 and bobbin 32 are aerodynamically prepared for subsequent splicing steps.

Further, in the area of the thread splicing device 10, additional thread handling devices such as a thread clamping device, a thread cutting device and a thread aligner, which are not shown for the sake of clarity in the drawings, are arranged.

The thread splicing device 10, which is shown in the front view in FIGS. 2 and 3, respectively, and operates without a cover element, has a splicing prism 23 arranged in a movement-adjustable bearing device 26, and the splicing thereof is spliced. The prism 23 has a splicing passage 27 capable of supplying compressed air if necessary. That is, the splicing prism 23 is fixed on the bearing device 26, and the bearing device 26 is rotatably supported in the air distributor 17 or on the air distributor 17.

The air distributor 17 connected to the housing 33 of the work unit 2 of the automatic twill winder 1 via a corresponding device for this purpose provides a bearing hole 39 for the bearing device 26 located in the splicing center SZ57. Have.

This allows the bearing device 26, and thus the splicing prism 23, to swivel to different angular positions in relation to the thread material to be treated.

As shown in FIGS. 2 and 3, the holding / untwisting pipes 18 and 19 are further inserted into the air distributor 17, and the needle yarns 31 and the needle yarns 31 and 19 are further inserted into the holding / untwisting pipes 18 and 19. The thread end of the bobbin 32 is prepared for the splicing step.

The bearing device 26 to which the splicing prism 23 is fixed further has a locking element 35, which cooperates with a corresponding locking recess 38 disposed in the air distributor 17. Then, the angle position α of the central axis 34 of the splicing passage 27 of the splicing prism 23 can be fixed and stepwise adjusted with respect to the normal thread running path 30 of the work unit 2.

The locking element 35 can then be formed, for example, by holes (not shown) arranged in the bearing device 26, in which the pressing ball pressed by the spring element is supported. ing.

The pressing ball under the spring pressure is locked in one of the locking recesses 38 when the bearing device 26 and thus the splicing prism 23 are swiveled, and these locking recesses 38 are arranged in a partial circular shape. It is arranged in the air distributor 17 in an arrangement form.

At this time, the fixed angular position α of the splicing passage 27 is preset by each of the locking recesses 38.

The adjusted angular position can then be fixed by tightening the fixing screw 37.

In the splicing prism 23 of the thread splicing device 10 shown in the plan view in FIG. 2, the central axis 34 of the splicing passage 27 of the splicing prism 23 forms an angle of 20 ° with respect to the normal thread traveling path 30 of the work unit 2. Positioned at an angular position.

Such a relatively large angular position of the splicing prism 23 of the yarn splicing apparatus 10 is preferably used in the following cases, that is, when it is necessary to process a relatively delicate thread material, that is, a thread splicing. Used when it is necessary to process a thread material, where the thread end to be threaded tends to form a relatively large thread balloon that sways out of the splicing passage 27 of the splicing prism 23 during the splicing process. To.

The formation of such a large thread balloon must be prevented, as such a large thread balloon has a very adverse effect on the splicing result. This is achieved by the yarn end being bent relatively strongly at the splicing aisle outlet and then brought into contact with the splicing aisle outlet based on the relatively large angular position of the splicing aisle 27.

The rotational flow applied to the yarn end by the splicing air during this bending and contact of the yarn end with the splicing passage outlet is utilized for orderly formation of the yarn splicing portion inside the splicing passage 27. Is guaranteed.

That is, it is prevented that the applied thread rotation extends out from the splicing passage 27 as a thread balloon and can be lost unnecessarily.

FIG. 3 shows a thread splicing device 10 in which the splicing prism 23 is positioned at the starting position. That is, in the thread splicing device 10 shown in FIG. 3, the central axis 34 of the splicing passage 27 of the splicing prism 23 is arranged at an angle α of 0 ° with respect to the normal thread traveling path 30 of the work unit 2. Has been done. That is, the central axis 34 of the splicing passage 27 of the splicing prism 23 extends parallel to the normal thread running path 30.

In practice, the selected adjustment of the angular position of the splicing passage 27 of the splicing prism 23 is between the two positions shown in FIGS. 2 and 3 in relation to the thread material to be processed.

At this time, when processing a relatively coarse yarn material, the splicing prism is usually not unnecessarily difficult to insert the yarn end into the splicing passage 27 of the splicing prism 23, or is not strongly blocked. The processing is performed at a relatively small angle position of the body 23. At this time, the fact that the yarn end portion made of the coarse yarn material is already in contact with the splicing passage outlet of the splicing passage 27 even at a relatively small bending angle is utilized.

That is, when processing a coarse yarn material, in order to bend the yarn end to some extent by contact with the splicing passage outlet, as well as the rotational flow applied to the yarn end by the splicing air during the splicing process is orderly. A relatively small angle position of the splicing passage 27 of the splicing prism 23 is already sufficient to ensure that it is used to form the spliced thread joint and that it does not disappear ineffectively as a thread balloon. ..

On the other hand, when processing a delicate thread material, a relatively large angular position of the splicing passage 27 of the splicing prism 23 is advantageous. That is, for delicate thread materials, it is guaranteed that the thread end is reliably in contact with the splicing aisle outlet only by a relatively large bending angle, which at least strongly prevents the generation of the thread balloon. This is because that.

Claims (6)

A thread splicing device (10) for a working unit (2) of an automatic twill winding winder (1) that splics two thread ends without a knot, and is equipped with a splicing prism (23). The splicing prism (23) has a splicing passage (27) that is open upward during the splicing step and is capable of supplying aerodynamic force, and the thread end portion in the splicing passage (27). Is positioned in the thread splicing apparatus (10) during the splicing step.
The splicing prism (23) is movably and adjustablely supported on a stationary air distributor (17), and the angle of the central axis (34) of the splicing passage (27) of the splicing prism (23). The position is adjustable with respect to the angular position of the thread runway (30) occurring during the winding process of the work unit (2) .
The angle (α) between the central axis (34) of the splicing passage (27) and the thread running path (30) of the working unit (2) is set to be less than 30 °.
A yarn splicing device (10), characterized in that. The thread splicing apparatus (10) according to claim 1, wherein the splicing prism (23) is restricted and rotatably supported around a splicing center (57). The splicing prism (23) is fixed on a rotatably supported bearing device (26), which has a locking element (35) and is locked. The element (35) cooperates with a corresponding locking recess (38) disposed in the air distributor (17) to provide the angular position of the splicing passage (27) of the splicing prism (23). The thread splicing device (10) according to claim 1 or 2, which allows a fixed stepwise adjustment of the above. The thread splicing device according to claim 3, wherein the bearing device (26) has a notch (36) penetrated by a fixing screw (37) corresponding to a thread in the air distributor (17). 10). The thread splicing apparatus (10) according to claim 1 or 2, wherein an adjusting gauge is provided to enable stepless adjustment of the angular position of the splicing passage (27). The yarn according to any one of claims 1 to 5 , wherein the adjustable angle (α) is 0 ° to 20 ° in relation to the yarn material in the operating state of the yarn splicing device (10). Splicing device (10).

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