JP6762753B2 - A splicer with a loop former for untwisting length adjustment and thread pullback, and a take-up unit and take-up machine with such a splicer. - Google Patents

Description

The present invention relates to a splicer that splics two thread ends, such as the ends of the upper and lower threads of a take-up unit of a take-up machine. The present invention also relates to a take-up unit and a take-up machine provided with such a splicer.

As is known, a splicer is used, for example, in a take-up unit of a take-up machine, for example, after a thread breakage or a bobbin change, to splice the upper thread and the lower thread of the take-up unit. At this time, the yarn end is prepared in a so-called untwisted tube before splicing, and at this time, at least the twist of the monofilament forming the yarn is untwisted at the yarn end. After untwisting, both yarn ends are pulled back until they overlap each other sufficiently in the splicing passage of the splicer, after which the original splicing step for yarn splicing is performed. At this time, in today's splicers, both untwisting and splicing are usually carried out using compressed air.

In addition, for optimal splicing results, the splicer components and their working parameters must be carefully selected according to the thread type. In particular, at this time, on the one hand, the so-called untwisting length, that is, the length at which the ends of both yarns to be spliced are untwisted in the untwisted pipe becomes a problem, and on the other hand, the untwisted yarn becomes a problem. Overlapping of the ends in the splicing passage is a problem, and this overlap is due to the pullback length, which means how long the thread is pulled back after untwisting its thread ends. , Will be confirmed. Therefore, to ensure the highest possible flexibility here, today's splicers have a correspondingly adjustable adjustment mechanism for the take-up unit to determine the untwisting length and pullback length. There is.

Both of these functions are combined into one in a single working mechanism, that is, in the so-called Zubringer, which is located on each side of the thread end facing the splicing passage. That is basically desirable and possible for many threads. However, this solution also has the major drawback of completely banning its use for many yarn types. Such drawbacks are clarified here by explaining its functional form for needle thread. At this time, the splicing passage extends almost vertically, and the needle thread comes from the take-up package located above the upper splicing passage. The condition for the bobbin thread occurs mirror imagely.

The needle thread is clamped by an upper thread clamp located above the splicing passage and inserted into a lower cutting device located below the splicing passage in connection with introduction into the splicing passage. .. The upper feeder then enters the thread runway laterally prior to cutting the needle thread, thereby forming a thread loop between the splicing passage and the upper thread clamp. This yarn loop is referred to herein as the upper untwisted yarn loop. After cutting the needle thread by the lower cutting device, the resulting needle thread end is sucked into the lower untwisted tube. For relatively thick yarns, the required untwisted yarn loop can be increased in order to immediately bring the yarn end to the suction region of the untwisted tube.

The return movement of the feeder causes the untwisted yarn loop to disappear again, so that the yarn end is sucked deeper into the untwisted tube, thereby adjusting the untwisted length. After untwisting the yarn ends, the feeder moves again in the loop direction, thereby forming a so-called pullback yarn loop. By forming this pullback yarn loop, the yarn end is first pulled out of the untwisted tube and then pulled back into the splicing passage.

German Patent Application Publication No. 4005752 legitimately criticizes this dual function of the feeder, which is referred to herein as the "Schlaufenzieher" in the description of the prior art. are doing. This is because when the untwisted yarn loop disappears, it is activated by suction into the untwisted pipe and is located side by side in the splicing passage to allow deeper suction of the yarn end into the untwisted pipe. This is because the needle thread and the bobbin thread slide in contact with each other. For yarns with a non-smooth surface, i.e. fluffy, rough, freeze-like yarns, the fibers protruding from the yarn surface may then be caught by each other during scraping movement. This creates an increased frictional force that prevents unhindered suction of the yarn end into the untwisted tube. As a result, different yarn lengths are sucked into the untwisted pipe, which may lead to untwisting, that is, different untwisting lengths may occur, and such different untwisting lengths may occur. Produces non-uniform and thus unsatisfactory splicing joints.

Therefore, German Patent Application Publication No. 4005752 consistently proposes the separation of both functions of adjusting the untwisted length and the pullback length and the allocation of the take-up unit in different working mechanisms. .. The feeder (“the loop tensioner of the prior art”) maintains the mechanical thread pullback function previously assigned to the feeder after untwisting the yarn end, whereas For the formation of untwisted yarn loops, new loop tensioners are proposed in the splicing passage, located on opposite sides of the feeder. That is, in the case of the needle yarn detailed above, the untwisted yarn loop is no longer formed above the splicing passage, but below the splicing passage, that is, between the splicing passage and the lower untwisted tube. .. By moving the untwisted yarn loop from the opposite side to the same side of the splicing passage as the belonging untwisted pipe, the needle thread and the bobbin yarn are no longer in contact with each other in the splicing passage when the untwisted yarn loop disappears. There is no need to slip in the state, and both threads can be sucked deep into their respective untwisted tubes, independently of each other, without contacting each other, which is accurate and reproducible in untwisting length. Allows for various adjustments.

This idea of using a separate loop tensioner to form the untwisted yarn loop is also taken up by German Patent Application Publication No. 4420979, which describes these working mechanisms there. It contributes to the generalization to the so-called loop former. German Patent Application Publication No. 4005752 specifically proposes one pull hook for thread engagement, fixed to the lifting cylinder for the loop tensioner, wherein the lifting cylinder. Can be operated by compressed air, hydraulically, electromechanically, or by a servomotor. German Patent Application Publication No. 4420979 generalizes this to another loop forming principle and specifically supplements the configuration of the loop forming device as a rotary vane and as an aerodynamic suction nozzle.

That is, a separate loop tensioner for the untwisted yarn loop solves the basic problem of reproducible adjustment of untwisted and untwisted lengths and is also considered good in the prior art. There is. However, such a configuration means an additional component in addition to the feeder. This becomes a more serious problem as the adjustment members required for the operation of the additional components are also doubled.

Against the background of the above, the challenges of the present invention provide a less complex and thus relatively inexpensive solution for adjusting untwisted and pulled back lengths without compromising reproducibility. Is to provide.

In order to solve this problem, the configuration of the present invention is a splicer that splics the needle thread and the bobbin thread.
・ Splicing passage and
An upper thread clamp and an upper cutting device located above the splicing passage, and a lower thread clamp and a lower cutting device located below the splicing passage.
-Upper and lower untwisted pipes provided between the splicing passage and the upper cutting device or the lower cutting device, respectively.
-In order to adjust the untwisting length of the bobbin yarn or the upper yarn in the upper untwisted pipe or the lower untwisted pipe, the bobbin yarn or the upper yarn is cut by the upper cutting device or the lower cutting device. With the upper and lower loop formers provided between the splicing passage and the upper cutting device or the lower cutting device, respectively, which form a untwisted yarn loop in the bobbin yarn or the upper yarn. In a splicer with,
The upper and lower loop formers formed pullback thread loops in the upper thread or the lower thread, respectively, and were untwisted in the lower untwisted tube or the upper untwisted tube of the upper thread or the lower thread, respectively. In order to pull the thread end portion back into the splicing passage, it is arranged between the thread path of the bobbin thread and the thread path of the needle thread, respectively.

In this solution, the inventor has surprisingly recognized that it is possible to combine the two functions of untwisting length and pullback length adjustment in a single working mechanism, and thus the prior art. Overcame preconceptions about this in. However, unlike the working style of the feeder, which is known and described above based on previous prior art, instead, there is a great structural similarity to the configuration under German Patent Application Publication No. 4420979. It is important that this working mechanism, also called a loop former based on the above, always acts on both threads, rather than on the same thread. Whereas each feeder based on previous prior art forms an untwisted yarn loop and a pullback yarn loop in one yarn, the loop former according to the present invention first forms an untwisted yarn loop in one yarn. Then, in the other yarn, a pullback yarn loop is formed. For example, the upper loop former first forms a untwisted yarn loop in the bobbin yarn and then a pullback yarn loop in the upper yarn. In order to realize this, it has been found that it is preferable to arrange a loop former between the bobbin thread thread path and the needle thread thread path. In this way, the loop former forms the untwisted yarn loop while entraining one yarn by the motion towards one yarn, and by the subsequent motion towards the other yarn. A pullback yarn loop can be formed while entraining the other yarn.

According to the inventor, in the prior art, the movement of the loop former and the movement of the feeder are performed one after the other in time, and the upper and lower loop formers and the feeder are arranged adjacent to each other. This takes advantage of the fact that it makes it possible to combine these loop formers and feeders into a single working mechanism. However, this recognition was first obtained by the inventor and has not been known in the prior art until now. Thus, the inventor has surprisingly easily met the long-standing requirements and achieved savings in components, including adjusting members, as required by the challenges of the present invention.

In the present invention as well as in the loop former known based on the prior art, it is preferable to form the untwisted yarn loop between the untwisted pipe and the splicing passage. If the yarn is flexible and / or if the untwisted tube and the cutting device are in close proximity, the thread is first sucked only in a length commensurate with the distance between the cutting device and the untwisted tube. , Other yarns can be introduced into the untwisted tube under the suction action of the untwisted tube, controlled by the guided extinction of the untwisted yarn loop. If the yarn is stiff, and if the distance between the untwisted tube and the cutting device is relatively large, then such yarn is not sucked in immediately after cutting, and the loop former first unwinds the untwisted yarn loop. Further increase. This increasing operation is continued until the yarn end reaches the lead-in region of the untwisted tube and then the yarn end precedes and is sucked in while extinguishing the untwisted yarn loop. However, in all cases, the untwisting length is accurately determined by the spacing between the cutting device and the untwisted tube and by the size of the untwisted yarn loop formed prior to cutting.

In any case, it is preferable to suck the yarn end portion into the untwisted pipe in advance for optimum yarn end untwisting. Therefore, regardless of the yarn type, the cutting device and the untwisted pipe are used. Only a small interval is provided between and. This is because the untwisting length is flexible enough and can be adjusted by the size of the untwisted yarn loop formed before cutting. This also simplifies control of the formation of untwisted yarn loops and is appropriate for all yarn types.

In this configuration, where each untwisted yarn loop is formed between the untwisted tube and the splicing passage, that is, in any case, it is avoided to directly suck in an unnecessarily large yarn length immediately after cutting. As just mentioned above, this is further supplemented by the proximity of the cutting device to the untwisted tube, which completely prevents the thread loop from being sucked into the untwisted tube and thus the curvature of the thread loop in the untwisted tube. The inconvenient weakening of the thread at the point is completely avoided.

In an alternative preferred embodiment, the untwisted yarn loop may be formed between the untwisted tube and the cutting device on one side of the splicing passage. This allows the advantage of close placement of the untwisted tubes in the splicing aisle, which exposes the untwisted yarn ends, which are properly prepared as needed, to relatively little effect. You only have to travel a relatively short distance into the splicing corridor.

As an additional note, for the sake of brevity, the needle and bobbin threads and the lower or upper components are often mentioned here, thereby orienting the splicing passage in a nearly vertical manner. Suppose that is implied. However, as already mentioned, this is only useful for simplification of the description and does not limit the generality of the present invention. It is apparent to those skilled in the art that it is a matter of skill in the present invention to simply splice two arbitrarily oriented threads by the orientation of the splicer's appropriately aligned components. Because there is. Similarly, although the same specific configurations of both loop formers are usually described below, such configurations are in practice the most preferred solution. However, the present invention also includes an embodiment in which both loop formers have different configurations from each other. That is because both loop formers can be arbitrarily combined with each other based on their independence from each other.

At this time, the loop forming device may be configured in the same manner as in the prior art, as is known based on, for example, German Patent Application Publication No. 4005752 and German Patent Application Publication No. 4420979. The important difference is simply that the loop former according to the invention must act on both threads back and forth, that is, the loop former according to the invention is for one thread as in the prior art. It is necessary to have not only the contact means of the above, but also the contact means for both positions. However, this can be easily developed from the prior art by providing a loop former between the threads and by appropriately arranging known contact means therein in a mirror image.

That is, for example, a loop tensioner similar to German Patent Application Publication No. 400005752, with one at each end of the lifting cylinder, in some cases correspondingly extended, instead of one tension hook at one end. Loop tension bodies, such as those with one tension hook, are problematic. However, rotating blades known based on German Patent Application Publication No. 4420979 are also problematic. The rotary vane, however, must now be able to swivel not only towards one of the threads, but also in the opposite direction towards the other. An aerodynamic solution, such as the suction nozzle of German Patent Application Publication No. 4420979, can also be realized, however, in which case the suction nozzle is configured to be oriented towards both threads. It must be done or the number must be doubled. In order to suck in a fixed length of flexible yarn, an appropriate stopper, for example formed as a fine grid, to prevent indefinite sucking of the yarn, is placed in front of the suction nozzle. Need to be supplemented. The size of the untwisted yarn loop is clearly determined by the nozzle shape, such as the length of the vertically long suction slit, or by, for example, the position of the suction nozzle that is laterally variable with respect to the yarn runway. Clearly confirmed.

As the adjusting member for the loop former, again, known principles based on prior art, such as aerodynamic, hydraulic, electromechanical or servomotor actuation, are used. be able to. A compressed air actuated lifting cylinder, for example further developed by tension hooks on both sides, of German Patent Application Publication No. 4005752, produces a solution with a pneumatic tension rod. Instead of engaging and pulling the thread with a tension hook, using pushing the thread apart with a contact pin or the like laterally oriented with respect to the thread is correspondingly aerodynamic. An workable push rod is obtained. However, even in this case, those skilled in the art are given the possibility of many alternative solutions.

Due to the mirror image movement of the upper and lower loop formers, it is particularly preferable that both loop formers are combined into one component. This is because not only can the structure of the loop former be significantly simplified, but it is also possible to use one common adjustment member, which is costly. And has a positive effect on maintenance effort. At this time, a particularly mechanical, but also aerodynamic, solution is a problem to connect both loop formers.

A particularly simple configuration of this idea is by further development of the rotary vanes known based on German Patent Application Publication No. 4420979, which has already been mentioned, that is, by configuring both loop formers as a common rotary vane. The rotation axis of this rotary vane extends through the center of the splicing passage and perpendicular to the surface of the splicer where the splicing passage is located. In order to form the untwisted yarn loop and the pullback yarn loop on the upper side and the lower side of the splicing passage, the rotary blade only needs to carry out one rotational movement toward both sides around the resting position, and this rotation The motion can be generated by a single reciprocating motor or a simple electromagnetic device. For this purpose, for example, an entrainment pin oriented laterally toward the rotation axis and attached to both ends of a connecting rod that extends laterally with respect to the rotation axis and is rotatable around the rotation axis rotates the thread. It can be pushed apart during exercise and at this time a desired loop can be formed. At this time, the position-fixing holding pin provided on the splicing passage side can, on the one hand, further strengthen the loop formation, but in particular, can work so that the thread path in the splicing passage is not obstructed by the loop formation. .. This is an extremely simple component that realizes two loop formers at the same time, and this component includes an uncomplicated adjusting member.

If the splicer or the perimeter of the splicer in the take-up unit cannot provide ample free space due to such a pure, rotational solution, a similar with common adjustment members. The solution can also be realized by a contact member that translates with respect to the thread. For example, again, it is possible to use push rods or tension rods as described above, where the push rods or tension rods are joined together and instead of their separate adjustment members, one common adjustment member. Can be used. Specifically, for example, car segments are proposed for coupling, and the rotation axes of these car segments extend through the center of the splicing passage and with respect to the surface of the splicer where the splicing passage is located. It extends vertically. The Rad segment is, on the one hand, a member that can rotate in both directions around its axis of rotation, and on the other hand, has a circumferential portion that extends sufficiently above and below the splicing passage. The circumferential portion is a member that remains in a connected state with the side of the contact member that is translated with respect to the thread during the rotational movement and faces the member. Specifically, such a member can be formed, for example, as a mirror image disc segment.

In a purely rotational solution, as mentioned above, again the original regulator is a reciprocating rotary motor or a correspondingly simple electromagnetic device capable of rotating the vehicle segment in both directions. Such rotational movement is then converted into translational movement of the contact member with respect to the thread via the transmission device. As an example for such a transmission coupling device, the circumferential portion of the vehicle segment is provided, for example, with teeth to engage the corresponding teeth of the push rod or pull rod on the side facing the vehicle segment. Can be However, it is also possible to use all other rotational to translational motion conversion principles well known to those of skill in the art. And if the structural space is sufficient, the car segment can be configured as a perfect car, especially as a perfect gear.

Basically, the present invention does not require a control-technically self-sustaining loop former, i.e., an external control device, the adjusting member of which is stored, for example, in the loop former itself, mechanically or electrically. It also includes a loop former, which is controlled by a coded program. However, such a configuration would require the entire splicer to be replaced, or at least the program of the self-supporting loop former, to other yarn types in the take-up unit, eg, during operational changes due to processing changes. It has the disadvantage that it must be.

Therefore, the present invention first mentions loop formers with externally controllable regulators, where both loop formers, as mentioned above, have only one common regulator. Can share with each other. Such adjusting members are then preferably controlled by the take-up unit calculator of the take-up machine or, in some cases, via the take-up unit computer and by the central control device of the take-up machine. That is, correspondingly, the operator has access to the work parameters of the loop former from the operation unit of the take-up unit, from the operation unit of the take-up machine, or to further enhance the operability, that is, from both. It is possible to recognize and change it in some cases.

Therefore, the problem of the present invention is solved by a take-up unit provided with one of the splicers according to the present invention described above, and also by a take-up machine provided with such a take-up unit. A preferred embodiment at this time is produced by the control of the loop forming device by the take-up unit computer and / or the take-up machine computer, as described immediately above.

All aspects described above and variations and combinations arising from these aspects for those skilled in the art are within the framework of the present invention. In the following, the present invention will be described in detail with reference to the embodiments shown in the drawings and some modifications.

It is a perspective view which shows the 1st Embodiment of the splicer which concerns on this invention which includes the loop former formed as a rotary vane. It is a top view of the splicing passage which shows the further modification form of the embodiment shown in FIG.

In all drawings, the same members are designated by the same reference numerals.

FIG. 1 (shown as FIG. 2 in the specification), which is substantially the same as in the German patent application publication No. 4420979, is a perspective view showing a first embodiment of the splicer 8 according to the present invention. The splicer 8 was obtained by a corresponding modification of this prior art loop forming device formed as a rotary vane 24. In addition to the splicer 8, the swivel nozzle 16 that fetches the needle thread 4 ′ from the take-up package (not shown), and the suction opening 21 that appropriately pulls out the bobbin thread 4 ″ from the feeding bobbin (not shown). The suction pipe 20 provided with the above, and all the constituent members which are possible constituent members of the take-up unit of the take-up machine are shown. Similarly, the needle thread 4 ′ and the bobbin thread 4 ″ are shown.

The splicer 8 first has the following remaining components. That is, a splicing prism 25 provided with a splicing passage 26 and its splicing air connection 45 fixed to the air distributor block 42 using a screw 43, directly adjacent to each other on the upper and lower sides of the splicing prism 25. A cutting provided with an operating mechanism 33 arranged above and below the untwisted pipe 38 provided in the air distributor block 42 and the air distributor block 42 at the extension of the thread guide plate 27 and the splicing passage 26, respectively. A device 32; 36 (the operating mechanism 33 for the upper cutting device 32 is similarly recognizable in the drawing), and an upper thread clamp 30 and a lower thread clamp 34 with operating mechanisms 31; 35, respectively.

The loop former of German Patent Application Publication No. 4420979, which had only one problem of forming a detwisted yarn loop, is configured as a rotary vane 24 in the drawings, wherein the rotary vane 24 is It has a rotating axis that runs through the center of the splicing passage and perpendicular to the surface of the splicer containing the splicing passage. Each of the entrainment pins 40 attached to both ends of the rotary vane 24 and parallel to the axis of rotation is always rotated towards only one of the yarns to form a untwisted yarn loop, i.e. For example, the upper entrainment pin 40 is always rotated only towards the bobbin thread 4 ″. That is, when the rotary blade 24 is rotated, the entrainment pins 40 capture the threads to which they belong, and the threads are entrained in the recesses 39 to which they belong in the splicing prism 25. For example, in the state shown in FIG. 1, the upper entrainment pin 40 entrains the bobbin thread 4 ″ to the right in the recess 39 provided in the upper right of the splicing prism 25 when rotating in the clockwise direction. .. The untwisted yarn loop formed at this time, that is, here at the bobbin yarn 4 ″, is further increased by the yarn being fastened by a position-fixed holding pin 41 on the splicing aisle side. However, at this time, the holding pin 41 is particularly provided so that the loop formation does not change the path of the upper thread 4 ′ or the lower thread 4 ″ in the splicing passage.

In order to further develop the rotary blade 24 disclosed in German Patent Application Publication No. 4420979 to the loop forming device according to the present invention, the rotary blade 24 is mainly simply unable to rotate sufficiently large in both rotation directions. You just have to be careful not to do it. Therefore, on the one hand, a corresponding driving device is required, and on the other hand, it is necessary to provide another recess 39'in the splicing prism 25 in a mirror image with respect to the recess 39 already existing in the splicing prism 25. Is. Such additional recesses 39'must be deep enough to allow sufficient rotation of the rotary vanes 24 with respect to each of the other threads. With this configuration, the desired pullback length for the yarn can also be obtained.

After the formation of the untwisted yarn loop and after the re-disappearance of the untwisted yarn loop by reverse rotation to the starting position for complete yarn end untwisting in the untwisted tube, the rotating blades are described in German Patent Application Publication No. 4420979. In addition to the book, according to the present invention, it satisfies another function of pulling the threads 4'and 4'into the splicing passage 26 by rotation in the other direction, respectively. For example, for that purpose, the upper entrainment pin 40 rotates to the left in the drawing, and now entrains the needle thread 4'into the recess 39'provided in the upper left of the splicing prism 25, and this entrainment operation is performed by the needle thread. This is done until the desired pullback length for 4'is obtained, i.e., until the thread end of the needle thread 4'occupies the desired position for splicing in the splicing passage 26. Therefore, another pin (not shown (but see FIG. 2)) corresponding to the holding pin 41 may be provided on this side as well, and if it is configured in this way, the thread is fastened on this side as well. On the one hand, it is possible to increase the pullback thread loop, and on the other hand, the influence of loop formation on the thread path in the splicing passage 26 can be prevented.

At this time, the rotary blade 24 can be driven by a drive unit provided around the rotary blade 24, as described in Japanese Patent Application Publication No. 4420979. In this case, the upper and lower entrainment pins 40 at the ends of the rotary vanes 24 are connected to each other by a structure having a substantially circumferential shape around the pin 40, and a drive unit is connected to this structure. However, optionally, a drive concept that acts directly on the rotating shaft is also possible.

FIG. 2 shows a further development of the embodiment shown in FIG. 1 in a schematic view of the splicing passage from above. In the following, the mode of action of the present invention will be described in detail again with reference to FIG. Unlike FIG. 1, here the splicing prism 25 is configured to be round, thereby omitting the recesses 39, 39'. Further, the holding pin 40 is directly connected by a simple connecting rod, and this arrangement form can be integrally configured. In order to introduce the threads 4 ′ and 4 ″ into the splicing prism body 25 and not to prevent the threads 4 ′ and 4 ″ from sliding out later, for example, in the region of the rotation axis and above and below the rotation axis. A gap may be left between the splicing prism 25 and the air distributor block 42, and a connecting rod may be provided there.

However, again, optionally, in the circular splicing prism 25, as in German Patent Application Publication No. 4420979, a circular ring joint that can be constructed relatively easily is feasible.

In the parts (a) to (d) of FIG. 2, the most important states of the rotary blade 24 and the threads 4 ′ and 4 ″ are shown from the insertion of the thread into the splicing prism 25 to just before the start of the original splicing process. It is shown. In the portion (a), the threads 4 ′ and 4 ″ are just inserted into the splicing passage 26 of the splicing prism 25 and the thread clamps 30 and 34 and the cutting devices 36 and 32. The rotary vane 24 is at its starting position.

In the portion (b), the rotary vane 24 is rotated clockwise about its rotation axis 24', at which time the entrainment pin 40 is thread 4', 4 in order to form the untwisted yarn loop 50. ″ Is hung on the peripheral surface of the holding pin 41 and bent. Therefore, the threads 4 ′ and 4 ″ held on the package or bobbin side by the thread clamps 30 and 34 closed in the meantime slide back through the cutting devices 36 and 32 which are still open. At this time, the geometrical arrangement of the constituent members and the magnitude of the rotational movement are designed so that the yarns 4 ′ and 4 ″ are located in the suction region of the untwisted pipe 38 after the untwisted yarn loop 50 is formed. .. The cutting devices 36, 32 are now closed, thereby forming the thread ends to be prepared for the threads 4', 4'. At this time, at the latest, at this moment, compressed air is supplied to the untwisted tube 38, whereby the threads 4'and 4'" can no longer leave the suction region.

Therefore, the yarn ends of the flexible yarns 4 ′ and 4 ″ are sucked into the untwisted tube 38 immediately, in some cases, initially forming a yarn loop. On the other hand, the hard yarn is sucked into the untwisting tube 38 immediately and in advance of the untwisted tube 38 only when the untwisting tube 38 is located sufficiently close to the cutting devices 36 and 32. If this is not the case, the rotary vane 24 pulls the yarns 4 ′ and 4 ″ back further by increasing the untwisted yarn loop 50 until the yarn ends reach the respective suction regions of the untwisted tube 38. As a result, the threads 4 ′ and 4 ″ are sucked into the untwisted tube 38 with the thread end portion in front. However, also, in order to always suck the flexible thread into the untwisted tube 38 with its thread end in front and to simplify the thread path, the untwisted tube 38 and the cutting devices 36 and 32 are used. A close arrangement is preferred, where the untwisting length is determined primarily by the size of the untwisted yarn loop 50.

After sucking the yarn ends of the yarns 4 ′ and 4 ″ into the untwisted pipe 38, the rotary blade 24 returns to its starting position in the counterclockwise direction and turns again, at which time the untwisted yarn loop 50 is extinguished. , The yarn end is sucked deeper into the untwisted tube 38, at which time the desired length of the yarn end is untwisted. Part (c) of FIG. 2 shows this state, that is, a state in which the rotary vane 24 returns to its starting position and the total untwisted lengths of the threads 4 ′ and 4 ″ are sucked into the untwisted tube 38. There is.

After the yarn end has been untwisted, the rotary vane 24 now rotates further counterclockwise, and the entrainment pin 40 of the rotary vane 24 has a yarn 4', in order to form a pullback yarn loop 51. The other of 4 ″ is hung on the peripheral surface of the holding pin 41 ′ and bent. At this time, the thread ends of the threads 4 ′ and 4 ″ held on the package or bobbin side by the thread clamps 30 and 34 that are still closed are pulled back toward the splicing prism 25. Part (d) of FIG. 2 shows the state after the threads 4 ′ and 4 ″ are completely pulled back, and in this state, the untwisted region 46 of the threads 4 ′ and 4 ″ ′, 46 ″ are located in the splicing passage 26, and the original splicing step can be carried out. After the splicing process is complete, the rotary vane 24 is brought back to its starting position and the threads 4 ′, 4 ″ are released from the splicing prism 25 as usual.

In addition to the embodiments described above of the present invention, which can be further freely combined, those skilled in the art can implement many other variations, all of which are the present invention. It is included in the frame of. For example, by replacing the entrainment pin 40 with a gear segment at the end of the connecting rod and a push rod having corresponding teeth, the rotational movement of the connecting rod can be converted into a translational movement of the pushing rod.

For the sake of completeness, the indefinite article does not preclude that there may be more than one component indicated by it. Further, the description of one specific component may not be able to divide the function into a plurality of alternative components, or may combine the functions of the described plurality of components into a single component. It does not necessarily mean that you cannot do it.

Claims (9)

A splicer (8) that splics the needle thread (4 ′) and the bobbin thread (4 ″).
・ Splicing passage (26) and
The upper thread clamp (30) and the upper cutting device (32) located above the splicing passage (26), and the lower thread clamp (34) and the lower located below the splicing passage (26). The side cutting device (36) and
The upper and lower untwisted tubes (38) provided between the splicing passage (26) and the upper cutting device (32) or the lower cutting device (36), respectively.
In order to adjust the untwisting length of each of the bobbin thread (4 ″) or the upper thread (4 ′) in the upper untwisted pipe (38) or the lower untwisted pipe (38). Before cutting the bobbin thread (4 ″) or the upper thread (4 ′) by the upper cutting device (32) or the lower cutting device (36), the bobbin thread (4 ″). Alternatively, between the splicing passage (26) and the upper cutting device (32) or the lower cutting device (36), respectively, which form a twisted yarn loop (50) in the needle thread (4'). In the splicer (8) having the upper and lower loop formers (24, 40) provided.
The upper and lower loop formers (24, 40) form a pull-back thread loop (51) in the upper thread (4 ′) or the lower thread (4 ″), respectively, and the upper thread (4) ′) Or the bobbin thread (4 ″), the thread end portion twisted in the lower untwisted pipe (38) or the upper untwisted pipe (38), respectively, is connected to the splicing passage (26). The upper loop formers (24, 40) are respectively arranged between the thread path of the bobbin thread (4 ″) and the thread path of the needle thread (4 ′) in order to pull back inward. temporally phase the lower thread to the front and rear (4 '') and the upper yarn (4 'the page of operably der in), the lower side of the loop forming device (24, 40) are temporally phase and forth The splicer (8) is characterized in that it can act on the needle thread (4 ′) and the bobbin thread (4 ″) in sequence . In the upper and lower loop forming devices (24, 40), the upper and lower loop forming devices (24, 40) splicing the untwisted yarn loop (50) with the untwisted tube (38), respectively. The splicer (8) according to claim 1, which is arranged so as to form between the passage (26). The splicer (8) according to claim 1 or 2, wherein the upper and lower loop formers are formed as aerodynamically operable push rods or tension rods, respectively. The splicer according to claim 1 or 2, wherein the upper and lower loop formers (24, 40) are coupled to each other to perform loop formation and have one common adjusting member. (8). The upper and lower loop formers (24, 40) are formed as common rotary vanes (24), and the rotary axis (24') of the rotary vanes (24) is the splicing passage (26). 4. The splicer (8) according to claim 4, which passes through the center of the splicer (8) and extends perpendicular to the surface of the splicer (8) where the splicing passage (26) is located. The upper and lower loop formers are formed as push rods or tension rods, respectively, and the push rods or tension rods are connected to each other by a car segment, and the rotation axis (24') of the car segment is 4. The splicer (8) of claim 4, which passes through the center of the splicing passage (26) and extends perpendicular to the surface of the splicer (8) where the splicing passage (26) is located. The upper and lower loop formers (24, 40), respectively, have one or one common controllable adjuster for performing loop formation, claim 1 or 2. Splicer (8). A winding provided with the splicer (8) according to claim 7 and a winding unit control device for controlling the respective adjusting members of the upper and lower loop forming devices (24, 40) or the common adjusting member. Tori unit. A winding provided with the splicer (8) according to claim 7 and a winder control device for controlling the respective adjusting members of the upper and lower loop forming devices (24, 40) or the common adjusting member. Taking machine.