JPS62299523A - Pot-shaped yarn twisting spindle - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a pot-shaped yarn containing one or more yarns or yarn fibers wound on a bobbin in the form of a single yarn or a double yarn. A tensioning pot 1 which is a thread spindle and is rotatably driven in which a bobbin receiving mandrel protruding from the center of the bottom is provided in an inner chamber, and a tensioning pot holding a torsion restriction part 11 provided in the upper center part. It relates to a type consisting of a lid.

Problems to be Solved by the Prior Art and the Invention The addition of yarns and yarn fibers has so far largely been carried out using ring thread systems. Although this long-known yarn system has some notable drawbacks, the quality of the yarn produced is considered to be very good.

The disadvantages of this system are the limited running length of the thread/υ yarn, the required maintenance of the traveler, and especially the limited high production speeds due to the ring-traveler system. be. Nevertheless, this ring tip is still widely used. In the case of ring-spring tips, aggressive thread/thread I! with a feeding device! Since the fiber supply is carried out and tension is necessarily created before the traveler passes, especially during so-called balloon formation, all threads/
Care must be taken that the thread m is fed to the ring spindle with equal tension. Slight differences in length and tension that inevitably occur when supplying doubling bobbins or single yarns,
In this conventional thread system, compensation is achieved by repeatedly adjusting tension and length as described above. As is well known, these factors have a large impact on optical values such as elongation and strength.

In contrast to this long-known ring yarn system,
In the case of newer screw tips, such as double twist frames and so-called two-stage screw tips, the feeding of yarn/thread fibers takes place almost always without tension. In other words, the individual threads/threads, whether single or double, are fed to the actual joining point in an almost tension-free state. This often causes irregular yarns. This is because individual thread sections are added with different tensions and lengths.

In the case of a two-stage screwdriver, in order to eliminate this drawback,
It is necessary to combine the individual yarns/yarn fibers prior to the actual joining process. This gathering process is carried out by giving a slight twist. In other words, before the actual joining process, when using a ring-traveler system, they are twisted together slightly by the joining machine.

With this one-thread system, too, a ring-traveler system must be used together, so that the kneading process is carried out in two separate operations, which is uneconomical. Incidentally, the first working step is necessarily limited in its efficiency when using a ring-traveler system.

In the case of a double twist frame, before the twisting is applied, the length and tension of the thread/thread 11ifl to be twisted is adjusted by means of an inserted or interposed brake.

Many proposals and configurations for this measure have since become known. However, a problem with this yarn system is that differences in yarn length and tension inevitably occur.

Moreover, this difference occurs in the case of single yarn bobbins, so-called solar bobbins, as well as in the case of doubled yarns of different materials and unadjusted yarns.

In the case of a potted yarn spindle of the type mentioned at the outset, which is described in German Patent Application No. 2 310 002, the bobbin or bobbins are non-rotatably mounted on a bobbin-receiving mandrel and the thread/yarn miscellaneous is drawn directly from the bobbin or bobbins through an opening provided in the lid of the pot. In that case, the thread section vibrating around the bobbin constantly fluctuates in length, with the result that the balloon-like thread tension varies accordingly. In order to eliminate this drawback, a specially constructed support element for guiding the thread is assigned to the opening in the lid of the pot.

In addition, G. Georgi, ``Nail Thread and Neck Tip'' (Stuttgart, 1957, published by Conradein Shoten, p. 2)
24/225), an open thread spindle for balloon-type thread wires has also been described. In this case,
The length of the thread portion extending between the bobbin and the thread path arranged above the center of the bobbin axis is maintained constant. For this purpose, the spindle has two parts facing each other.
A disc with holes is provided. These 1゛1
The hole number is approximately midway between the height of the good bobbin, and the thread passes through one of the holes from the bobbin and is pulled out to the upper thread path for the thread. The movement of the bobbin attached to the spindle shaft is controlled by an underlying fiber or felt disk.
II is moved. The second single hole primarily serves as a spare part and also serves to compensate for rotating masses. However, with this type of open thread spindle, it is inevitable that the centrifugal force will be large, so it is also inevitable that the thread will be swung out even at low rotational speeds. In addition, in the case of doubling yarns, processing using such a rotating yarn path is extremely common. This is because, in addition to the outward centrifugal force, there is also the problem of twist transmission.

In other words, the twist in the thread is transmitted to the unwinding bobbin, creating a twist there.

Means for Solving the Problem The problem underlying the invention is that, in the case of pot-shaped yarn spindles of the type mentioned at the outset, the yarn or yarn fibers drawn off from the bobbin or bobbins are structured in the form of a balloon. It is then added while adjusting the length depending on the tension.
This conclusion 1! , so that a completely uniform twist distribution is guaranteed in the thread.

According to the present invention, this problem was solved as follows. That is, one or more bobbins can be easily rolled and rotated onto a bobbin receiving mandrel, and a thread guide is formed on the side wall of the tensioning pot at a position corresponding to the center of the one or more bobbins. The thread/thread fiber is guided through the guide to the upper twist limit and then to the drawer or winding device. The pot-shaped yarn spindle according to the present invention allows the yarn components to be twisted uniformly in the same way as the known ring yarn system by pulling out the yarn from one or more bobbins and a pay-out balloon. ,
Moreover, there is no need to use a ring-traveler system with limited efficiency.

In the case of the pot-shaped yarn spindle according to the invention, the threads or yarn fibers to be joined are completely equal in tension and length during the subsequent joining process, as in known ring yarn systems. They are guided through separate zones under an initial tension such that they are twisted together.

Using the pot-shaped yarn spindle according to the invention, it is possible to knead any fiber material. Therefore, for example, plant fibers such as cotton, animal fibers such as wool, etc.
Furthermore, it is possible to add synthetic yarns or yarn fibers in any number range, whether they are single yarns or double yarns. It is also possible to add any combination of fiber materials. In contrast to known yarn systems, the pot-shaped yarn spindle according to the invention does not require any conversion, partial replacement or otherwise, apart from adjusting the twist by means of the screw tip-like drive when changing the preset standard of the yarn. Nothing is necessary. To change the twist adjustment, only the drive of the delivery bobbin needs to be changed.

The threads/thread fibers to be joined may be double threads or double-stranded threads, or may be single threads or multi-bobbin threads. In this case, as is the case with most known yarn systems, no care is required to ensure complete winding on the yarn supply bobbin. Almost all the customary types of bobbins are suitable for feeding yarn for adding.

By using the potted thread spindle according to the invention, yarns/thread U5 miscellaneous of all types and thicknesses can be processed without any previous protective bonding, such as the known bonding, which has hitherto been necessary, in short on several gold thread bobbins. Alternatively, yarns from multiple single yarn bobbins can be added at high or very high rotational speeds of the spindle.

In order for the potted thread spindle to function satisfactorily, the following points must be ensured:

That is, the bobbin or bobbins placed in the pot-like yarn spindle are not subject to any rotation of the spindle itself, apart from a slight unwinding rotation of the bobbin due to the yarn or fibers being drawn out. It is a point that rotates at a rotational speed equal to the speed.

This problem does not exist while the threading process is in progress.

After a short starting process, the rotational speed is fully adjusted. On the other hand, the thread bobbin or thread bobbins are not rotatably connected to the spindle, so that the start-up of the spindle is delayed and this can lead to thread breakage.

The same thing inevitably occurs in reverse order when the spindle stops. This is because the freely bearing bobbin mass(s) rotates beyond the spindle itself, which can also lead to thread breakage.

If problem-free through-spindle rotation is to be guaranteed both during starting and stopping of the spindle and during the υ process, the following must be achieved by means of some mechanism. That is, the bobbin or bobbins should always rotate at the same rotational speed as the pot-like thread spindle itself, apart from a slight unwinding rotation of the bobbin due to thread withdrawal. In this case, the entrainment of the bobbins by frictional contact should only take place during start-up and coasting of the spindle, while the bobbin or bobbins should be not or only slightly controlled during long loading operations. Make it.

It goes without saying that a device that performs these alternating functions should be simple in its 1M construction and should not interfere with the operation of the thread system or require additional operating operations. The device would also need to be designed such that it does not change over long operating times or even in the event of accidental human intervention.

A device meeting these requirements consists of a centrifugal clutch according to patent claims 11 to 13. This clutch has a function of preventing relative rotation of one or more bobbins with respect to the tension pot when the rotation speed of the tension pot falls below a predetermined minimum rotation speed.

Next, some preferred embodiments of the present invention will be described with reference to the drawings.

1 and 2 show a pot-shaped thread spindle in longitudinal section. The right half shows the thread joining from a single bobbin, and the left half shows the joint thread joining from two bobbins, each with a single thread. An add-on pot 1 is arranged on a rotatably driven spindle.

Inside the pot 1, a bobbin receiving shaft 2 is provided at the center of the bottom. This mandrel 2 has a bearing sleeve 3゜3.
' is supported so that it can easily roll and rotate via either a ball bearing, a rolling bearing, or a needle bearing 4. This bearing sleeve 3.3' is a thread bobbin or thread fiber bobbin 5 or bobbin 5'.

5". The lower bobbin 5" is mounted directly on the associated bearing sleeve 3. For this purpose, sleeves 6.6' are provided between the bobbins 5 and 5' and the associated bearing sleeves 3', which serve for diameter compensation. By doing this, the bobbins 5' and 5'' can be used with matching sleeve dimensions.Bobbin 5 to bobbin 5'.

There is a through hole 7 in the pot wall half the height of 5".
．． 7', 7" are formed, and these holes are protected by a ring 8 with a hard surface. These through holes 7.7', 7"
The thread 9.9 passes through and is drawn out from the bobbin 5.5', 5"
', 9'' are guided out and further upwards on the outside of the locking pot until they reach a hook-shaped or ring-shaped torsion limiter 11 located on the lid 10 of the locking pot. is guided to a thread winder (not shown).For starting and coasting of the potted thread spindle, the thread/
In order to prevent surface friction of the threads 11119.9', 9", a surface-hardened ring 12 is arranged on the upper side of the lid 10. Due to the high spindle rotation speed during operation, the threads 9.9', 9" Since a balloon is formed between one or more holes 7.7', 7" and the twist 1111 limit part 11, the threads 9.9', 9" cannot contact the additional pot. do not have.

In order to prevent undesirable advance or lag of the bobbin 5.5', 5'' and to obtain a slight control effect, braking devices known per se can be used.

It can use, for example, either a permanent magnet 13/brush 14/brake lining, a pivot bearing that rotates only in the force direction, or a simple pawl-type device in the form of a ratchet. For this purpose, the upper end of the square-shaped bobbin receiving mandrel 2 is provided with a rotation-protected disk 15 having a square hole. The disc 15 has a radial lower sludge, to which a cutout in the upper end of the bearing sleeve 3' is assigned. The disc 15 is under the action of the weight a of a load disc 16 placed above it.

FIG. 2 shows a potted yarn spindle identical to FIG. 1, with the difference that the yarn/yarn fibers 9 are deflected upwards from the inner wall of the pot spindle. For this purpose, in this embodiment, a sleeve-shaped or ring-shaped guide member with a thread path in the form of an eye hole 18 is fitted into the lv pot 1. The thread guided upwards inside the tension pot further passes through a central hole in the lid 10 and is guided to a winder (not shown) via a twist restriction 11 added at this central hole. .

In the embodiment of the pot-shaped yarn spindle shown in FIGS. 3 and 4, a centrifugal clutch is provided. This clutch prevents relative rotation of the bobbin 5 with respect to the pot 1 when the speed of the pot 1 falls below a predetermined minimum speed. A disk 19 is arranged in the pot 1 and covers the entire bottom surface and is connected to the bottom by screws 20. The disc 19 has a free central hole 21. The diameter of the central hole 21 is such that the receiving stem 2 projecting into the pot 1 and the bearing sleeve 3 mounted thereon can fit through it.

The outer ends of the four radial holes 22 formed in the disk 19 each have an internal thread. A hardened steel ball 23 is first inserted into each of these holes, and then a ball receiver 24 and then a coil spring 25 are pushed in from the outside.

The outer end of the hole is closed with a headless screw 26.

Since the inside of the hole 22 is narrowed, the inserted steel ball 2
It is impossible for 3 to fall outside. A round tube section is connected at the bottom to the rotatably mounted bearing sleeve 3. A steel ball 23 is in close contact with this tube portion by the action of a spring 25.

When the addition pot 1 and therefore one of the discs enters the rotating state, the steel balls 23 act as a clutch and force the sleeve 3 to rotate together with the pot 1. In other words,
During start-up of the spindle 2, the sleeve 3 and the bolt 5 rotate at virtually the same rotational speed. In that case,
The rubbing contact is such a contact that the yarn/yarn fiber to be drawn out can barely be paid out from the bobbin 5.

As the rotational speed of the spindle 2 increases, a centrifugal force is generated which pushes the steel balls 23 outwards against the action of the spring 25. This breaks the dark driving connection between pot 1 and sleeve 3. The thread is then drawn off from the bobbin 5 unhindered, so that only a slight tension occurs in the unwinding section.

When the spindle 2 stops, the exact opposite of the above-mentioned course takes place completely automatically. As the rotational speed of the pot 1 decreases, the centrifugal force decreases, and the steel ball 23
5 comes into contact with the pipe portion of the sleeve 3 again, so that the sleeve 3 is connected to the pot 1. pot 1 and bobbin 5
therefore stop at the same time. This prevents the thread or thread from breaking. The twist of the thread does not make any difference even after the spindle or the thread end has stopped.

If two bobbins 5', 5'' are mounted on the mandrel 2, the lower bobbin 5'' is connected to the pot 1 in the manner described above. The clutch on the upper bobbin 5' then:
It is arranged in the lid 10 of the pot 1 as shown in FIG. A steel ball 23 and a spring 25 are inserted into the hole in the lid 10. The upper edge of the bearing sleeve 3', which receives the upper bobbin 5' via the insert sleeve 6', projects into the lid 10, so that the steel ball 23 is supported here as well as in the bottom area. It is in close contact with the tube part of the sleeve.

As can be seen in FIG. 7, the lid 10 is formed with a radial notch 27 into which a projection formed on the edge of the pot 1 engages.

This prevents the lid 10 from rotating relative to the pot 1. Said radial notch is not visible in FIG. This is because it is formed at a position a shifted by 90'' from the position of the centrifugal clutch.Needless to say, the threads 91 and 9 L drawn out from the bobbins 5 and 5'
L is also guided in a plane offset by 90° from the drawing plane of FIG.

These notches 27, which serve to guide the thread, are hardened. In addition, these notches 27 allow the thread to
It has four sections that allow it to form a balloon by twisting it out of the way until it reaches the control part 11. This balloon makes it possible to compensate for the length and tension of the thread.

With such a centrifugal latch, which works simply and without problems, the following is achieved: This means, on the one hand, that during starting and stopping of the spindle 2, the bobbin or bobbins rotate together with the pot 1, in other words at the same rotational speed, and on the other hand, during the adding process, the bobbin or bobbins rotate is a scale that rotates unhindered relative to the pot.

The centrifugal clutch or centrifugal brake described above can also be used in the embodiment of the pot-shaped thread spindle shown in FIGS. 1 and 2.

In the embodiment shown in FIG. 5, a guide element in the form of a fork 28 is used for thread guidance. These forks 28 are formed by a piece of wire bent into a U-shape and are free! It is inserted into the groove 29 with the first part first. A groove 29 is formed in the inner wall of the pot 1 (see FIG. 6). The legs are each connected to one another with an additional U-shaped wire piece 30. As shown in FIG. 5, this U-shaped portion 30 of the fork 28, like the U-shaped joint 31 of both legs, projects somewhat from the common plane of the legs. By doing this, the U-shaped portion 3o can transfer the thread to the associated bobbin 5',
5" can be deflected towards the connection 31 approximately in the central region.

These guide forks 28 are particularly easy to handle. When installing the bobbin into pot 1, use thread 3.
Hold the cap high, then insert the guide fork into the groove 29 to fix the course of the thread, then cover the pot with the lid 10 so that the two notches 27 of the lid 10 are above the guide fork 28. so that the fork 28 pushes the thread 71 short distance into the notch 27. The two threads are subsequently guided from the other side through the twist limiter 11 assigned to the lid 10 and from there to the winder above.

5 and 7 further show that the edge of the lid 10 is formed with a radially outwardly opening groove 32. FIG. The groove 32 receives circular rubber pieces 33, 34, the ends of which are inserted into the radial interior of the groove bottom and fixed there, for example by gluing. These rubber pieces 33 are used to rotate the pot 1.
．． 34 comes into close contact with the pot green due to the action of centrifugal force.

[Brief explanation of drawings]

FIG. 1 is a longitudinal cross-sectional view of a first embodiment of a pot-shaped twisted thread spindle, FIG. 2 is a longitudinal cross-sectional view of a second embodiment of a pot-shaped twisted thread spindle, and FIG. 3 is a third embodiment of the spindle. FIG. 4 is an enlarged vertical cross-sectional view of the lower area of FIG.
- a partial cross-sectional view of the disk in the add-on pot along the line IV; FIG. 5 is a longitudinal cross-sectional view of the fourth embodiment of said spindle; FIG. FIG. 7 is a partially sectional plan view of the lid placed on the pot, and FIGS. 8 to 10 are side and front views of the thread guide fork that can be inserted into the pot. It is a diagram. In the figure, 1... Addition pot, 2... Bobbin receiving mandrel, 3.3'... Bearing sleeve, 4... Bearing, 5.5', 5"... Bobbin, 9.9 ′, 9”...
Yarn/yarn fiber, 11...Kink restriction part, 13.14...
・Ribbing device, 23.24.25...Centrifugal clutch, 2
7... Notch.

Claims (13)

[Claims] (1) Bobbin (5, 5', 5'') in the form of single thread or double thread
) are wound into threads or yarn fibers (9, 9', 9''
), which is a pot-shaped yarn spindle that can be driven in rotation and has a bobbin receiving mandrel (2) protruding from the center of the bottom inside the inner chamber, and and a locking pot lid (10), which retains a torsion limiter (11) provided, in which the bobbin (5, 5', 5'') rolls and rotates on the bobbin receiving mandrel (2). The side wall of the adding pot (1) also has guides (7, 7', 7'') (17, 18) (28 ,3
0) and by means of these guides the yarn or yarn fibers (9, 9', 9'') are provided with an upper torsion limiter (11).
A pot-shaped yarn spindle, characterized in that it is guided to a drawer or to a winding device. (2) The bobbin (5, 5', 5'') is connected to the bearing sleeve (3,
3') and these bearing sleeves (3,
3') is rotatably mounted on the bobbin receiving mandrel (2). (3) The guide has a hole formed in the pot wall (1) (
7, 7', 7'') through which the thread or thread fibers (9, 9', 9'') are guided to the outside and in the form of a balloon to the upper torsion limiting member (11). Pot-shaped yarn spindle according to one of claims 1 or 2, characterized in that it is guided. (4) Guidance is formed by guides (17, 18) (28, 30) provided on the inside of the pot wall (1), by means of which the threads or yarn fibers (9, 9', 9
″) is deflected upwards towards a hole formed in the center of the lid (10) of the pot. pot-shaped yarn spindle. (5) A pot according to claim 4, characterized in that the guide parts (17, 18) (28, 20) are removably inserted into the inner chamber of the pot (1). shaped thread spindle. (6) Can be inserted into the pot (1) and has an eye hole (1
8) Sleeve pieces (17) with other types of thread guides
6. The pot-shaped yarn spindle according to claim 5, wherein the guide portion is formed by. (7) The guide is formed by U-shaped thread forks (28) which, starting from the free leg, extend into an axis-parallel groove (29) formed in the thread pot.
6. Pot-shaped thread spindle according to claim 5, characterized in that it can be inserted into the pot-shaped thread spindle. (8) The pot (1) has a notch (2) in the edge area.
Claim 6, characterized in that it is closed by a lid (10) having 7), through which the threads coming from the guide are guided to the twist limiter (11). or the pot-shaped thread spindle according to any one of clauses 7 to 8. (9) Brake member A (13, 14, 15, 19 to 2
6) controls excessive relative rotation of the bobbin or bobbins (5, 5', 5'') within the tension pot (1) A pot-shaped yarn spindle according to any one of paragraphs. (10) The brake member includes a permanent magnet (13), a brush (
14), brake lining, rotation direction lock (15)
) The pot-shaped yarn spindle according to claim 9, characterized in that it is any one of the following. (11) When the rotational speed of the addition pot (1) falls below a predetermined minimum rotational speed, the centrifugal clutch (19 to 26) prevents the relative rotation of the bobbin or bobbins (5, 5', 5'') with respect to the addition pot. The pot-shaped yarn spindle according to claim 9, characterized in that: (12) At least two mutually facing radial holes (22) are formed in the bottom of the locking pot (1), in which the clutch body (23) is movable under the action of centrifugal force. furthermore, these clutch bodies (23) are each pressed radially inwardly by the force of a spring (25) and are in frictional contact around the assigned bearing sleeve (3). A pot-shaped yarn spindle according to claim 1, characterized in that: (13) When using two single yarn bobbins (5', 5''), two radial holes are formed in the lid (10) of the locking pot (1), also facing each other; Clutch bodies (23) are movably supported in the holes under the action of centrifugal force, and each of these clutch bodies (23) is moved radially inward by the force of a spring (25). 13. Pot-shaped thread spindle according to claim 12, characterized in that the upper thread bobbin (5') assigned thereto is pressed into frictional contact around the periphery of the bearing sleeve.