DE2255702A1 - THREAD SPINNING PROCESS AND DEVICE FOR CARRYING OUT THE PROCESS - Google Patents

Description

Paienicm-vralie

Y \ ^ · '-: ■ υ Cw m «*

7250

KABUSHIKI KAISHA NEGISHI KOGYO KENKYUSHO, Saitama-ken, Japan

Thread spinning process and device for carrying out the process

The present invention relates to a thread spinning process, which works according to a spinning system that is open at the end and a device for carrying out the process.

It is known to be related all over the world has carried out a wide variety of investigations with the so-called open-ended spinning system, and there are already many methods and apparatus using this system have been proposed.

Sufficiently satisfactory methods and devices have not yet become known. In other words, the known methods and devices mentioned above have numerous disadvantages, such as relatively frequent breakage of the thread during the spinning process as well relatively low tensile strength of the spun thread compared with that of a common thread, so that one

3 0 9 8 2 2/0809

225570?

was forced to give the thread a stronger twist than in usual cases, as well as a relatively narrow range of application of the spun thread.

The above-mentioned disadvantages are particularly noticeable when you look at the conventional spinning process and Devices according to the spun thread at the end of the open spinning system with the spun thread that is compared the teaching of Japanese Patent 118,514 obtained, the was issued on December 16, 1936 and goes back to the inventor of the subject of the application.

The main reason for the above-mentioned disadvantages is that the fiber strand is merely subjected to twisting and twisting is while it is being pulled so that there is no influence to move the strand in the spinning direction, and in the absence of this influence, stretching or pulling the strand becomes too difficult in practice.

The present invention is therefore based on the object of specifying an improved spinning process which, according to the on Open end spinning system works and in which the bundling and transmission of the fibers, which are formed as a strand are to be carried out effectively.

An improved spinning process is also to be specified, which works according to the spinning system open at the end and in which the fiber bundling or gathering and transmission of the fiber strand as well as stretching or pulling the strand can be effectively carried out to thereby achieve the above-mentioned To eliminate disadvantages that occur in the known, open-ended spinning system.

Finally, devices and parts thereof are to be created which can carry out the methods according to the present invention extremely effectively.

3Q98 22/0809

OfUQlNAL INSPECTlD

The above object is achieved according to the invention by a method, which is characterized by feeding the fibers to be processed into an inner rotor from an upper part the same from, wherein the inner rotor is arranged in an outer rotor which has an inner helical surface, whereby it is rotated differently with respect to the outer rotor, discharging those introduced into the inner rotor Fibers one after the other from this rotor at a vertical point of the same on the screw surface, the threads the helical surface are uniformly traversed, collecting or summarizing the distributed on the helical surface Fibers at a different point on the inner rotor as the rotor continues to rotate or transferring the fibers combined in this way as a sliver in the spinning direction, e.g. against an outlet guide hole, which is provided on the bottom part of the inner rotor, and pulling the transferred or moved in this way Strand through this guide hole by means of pull rollers, while spreading the free ends of the fibers through the inner wall of the guide hole is prevented and by twisting the fiber strand at a point between the Guide hole and the pull rollers.

Further refinements of the invention emerge from the subclaims emerged.

The invention will now be described in detail with reference to the accompanying drawings, all of which are taken from the description and the details or features emerging from the figures can contribute to the solution of the problem within the meaning of the invention and were included in the application with the intention of being patented. Show it:

3098 227 0 809

_4- 225570?

Fig. 1 is a vertical sectional view of the schematic overall structure of an embodiment of the device according to the present invention;

Fig. 2 is a cross-sectional view along the line II-II in Fig. 1;

FIG. 3 shows an enlarged partial sectional view of a detail of the sectional view shown in FIG. 2 clearly illustrate the holding of a fiber strand;

Fig. 4 is an enlarged partial sectional view which greatly enlarges part of a second embodiment Fig. 11 relating to the fiber strand transfer device;

Figure 5 is a top plan view of the part shown in Figure 4;

6 is a cross-sectional view of part of a third embodiment of the fiber strand transmission device and

Figure 7 is a partial top plan view of the structure shown in Figure 1 illustrating the apparatus which rotates the inner and outer rotors differently.

Reference is now made to FIGS. 1 to 3, which show an apparatus which can be used to carry out an exemplary embodiment of the method according to the present invention is used. The spinning unit or device has an outer one Rotor A, which is supported or mounted so that it can be rotated in the direction of the arrow. He's at his inner Wall provided with a right-hand helical surface 1, and an inner Ro Lor D iut in the outer rotor A rotatably mounted. The speed of the rotor B is kept lower than that of the rotor A, causing a differential rotation or

3098 2 2/0809

ORIGINAL INSPECTiD

different rotation between rotors A and B is caused. The inner rotor B is provided with an upper hollow shaft 2 and a lower shaft 8, and a rotating part 13 is screwed onto this hollow shaft 2. The outer rotor A has a lower rotating part 12 and an upper rotating part 11 equipped, which has a splash 23 which, like to be described, is suspended on the upper edges of two rollers 14 and 14a. An inner rotor B rotatable supporting thrust bearing 28 is inserted between the rotating part 13 and the flange 23. The outer rotor A consists of two parts screwed together in such a way that they can be separated from each other when the unit is disassembled will. Bearings 27 and 27a are between the rotating part 11 and the hollow shaft 2 or between the rotating part 12 and the shaft 8, whereby the inner rotor B is coaxial and rotatable is supported in the outer rotor A. The upper circulation part 11 is in contact with rollers 14 and T4a (FIG. 7) and is pressed against these, which are attached to shafts 29 and 29a and together with lower rollers 15 via corresponding Shafts 17 and 17a are rotatably supported. The lower rollers 15 are in contact with the lower rotating part 12 and are pressed against this, making the outer rotor A vertical is rotatably supported.

Further, the rotating member 13, which is fixed to the upper part of the hollow shaft 2, is brought into engagement with the two rollers 16 and 16a, whereby the rotating member 13 and hence the inner rotor B can be rotated device, when the rollers 14, 15, 16 and 14a, 15a, 16a are rotated via the shafts 29 and 29a by means of drive belts looped around these shafts 29 and 29a, the outer and inner rotors A and B are set in rotation Case, by selecting the diameters of the rollers 14, 14a and 15, 15a to be larger than those of the rollers 16 and 16a, the rotational speed of the inner rotor B can be kept smaller than that of the outer rotor AZB, the rotational speeds of the rotors A ^ Ui ^ d ₀ B ₁ #it 30000 rpm or 29500 rpm

ο uy ο L.

-6- 225 57

be accepted.

Any device can be used to support the outer rotor A. For example, you can add the flange 23 use to carry the spinning unit as shown in FIG. Well-known ball bearings, such as those used in any engine can be used to support the outer rotor, or the spinning unit can be used by any Means, e.g. a magnetic force, press on the drive rollers, this magnetic force pushing the outer rotor A against the rollers 14, 14a, 15, 15a and 16, 16a pulls. However, since this means for vertical support or storage of the outer rotor A do not form any essential features of the invention, is on their detailed description is omitted.

The inner rotor B is provided with a first split slot 4 which is partially in communication with the interior of the Hollow shaft 2 is standing and is open at its lateral part towards the screw surface 1. The hollow shaft 2 is in Connection to a conventional fiber conveyor device 20, which is provided on the hollow shaft 2. The detailed structure this device 20 is not shown as it is known. The through the fiber feed device 20 in the hollow shaft 2 introduced fibers are caused due to the above construction, through this lateral part of the split slot 4 exit while they are controlled or ordered by the side wall 3 of the split slot 4.

The inner rotor B is further provided with a second split slot 4a, and an endless toothed belt 6, which around the shafts 5, 5a and 5b is looped in the inner Rotor B, or wound around rollers 5c, 5d and 5e carried by these shafts arranged in the divided slot 4a. The belt 6 is provided with external teeth 6a which mesh with the screw surface 1 of the outer rotor A stand, whereby the endless toothed belt 6 is rotated at a speed that the

309822/0809

ORlGiNAL INSPECTiO

- 7 - 2255V02

Product of the thread pitch of the helical surface 1 and the difference between the speeds of the inner and outer Rotors A and B corresponds. The above-mentioned split slot 4a and the endless toothed belt 6 constitute a fiber strand forming device and transmission device.

The inner rotor B ′ has a fiber strand guide hole on its lower shaft 8 21, through which the strand F is pulled out is, and there are also provided below the guide hole 21 two pull rollers 9 and 9a, whereby the out of the Guide hole emerging strand is pulled out, while the strand is twisted at the same time at a point between the guide hole and the pulling rollers.

The endless toothed belt can be made of leather, synthetic resin, or similar flexible material, and it is attached to one side of its outer circumference with parallel teeth 6a. provided, each of which is about 1/4 wide to 1/2 the width of the band, leaving a void to coincide with the foot portion 25 on the side of the tooth 6a-connected.

Due to the above-mentioned construction of the endless toothed belt, the fibers f ₂ », which are distributed or scattered pressed onto the helical surface of the outer rotor A, enter the empty space 26 one after the other and get caught on the side surface of the tooth 6a during the different rotational movements of the rotors A and B proceed, whereby the fibers in the void are collected or gathered and form a fiber strand. On the other hand, the fiber strand formed in this way becomes an endless one together with the toothed belt. Is subjected to rotation, and it gradually slides downward along the slope of the screw surface 1 while being held between the screw surface and the void, thereby moving the fiber strand against the lower guide hole 21 of the inner rotor.

30982 2/0809

Accordingly, when the strand of fibers is drawn out from the guide hole 21 while being stretched or pulled, are the fibers of the strand are pulled out one by one at a predetermined speed while they are successively are properly maintained.

Spinning process

It is assumed that the loosened or non-contiguous fibers f from the fiber feeding device 20 in the Hollow shaft 2 are inserted, and that the outer and inner rotors A and B are rotated in the same direction, while maintaining a predetermined speed differential therebetween.

Subsequently, due to the centrifugal force, the air present in the split slot 4 of the inner rotor B is opposed to the Helical surface 1 of the outer rotor A steered or deployed. The air released in this way escapes in the essentially through the small holes 1b, and the remaining part of the air is along the screw surface 1 against the steered lower part of the rotor B, as a result of a guiding function by the rotation of the helical surface. the Air directed in this way is eventually directed outside through the guide hole 21.

Due to the above-explained application of the air in the divided Slit 4 is a suction force tending to introduce outside air together with the fibers f into the hollow shaft 2, generated in the hollow shaft 2, whereby the supplied by the fiber feed device 20 fibers one after the other be pulled into the hollow shaft 2 and then into the split slot. Those inserted into the split slot 4 Fibers f are then distributed on the helical surface 1 while in a substantially uniform mode be arranged along the wall of the slot 4. As a result, the ordered fibers fp are subjected to a twist.

309822/0809

thrown while they are vertically and parallel distributed over the screw thread of the screw surface 1, and pressed against this. At the same time as this rotation of the fibers f ₂ takes place, these parallel fibers are gradually advanced from the opposite position of the slot 4 due to the difference between the speeds of the inner and outer rotors B and A, and they finally reach the toothed belt 6, being pressed one by one against the side surfaces of the teeth 6a of the toothed belt 6, whereby the fibers are gathered on the side surfaces of the teeth 6a as shown in Fig. 3 while the strand F is being formed.

The fiber strand F formed in this way slides along the slope of the helical surface 1 downwards, while it is pressed onto the screw surface and against the side surfaces of the teeth 6a of the toothed belt 6, the fiber strand is introduced into the guide hole 21 and brought out of this while it rotates together with the toothed belt and accompanied by the endless rotation of the toothed belt will. The essential feature of the spinning process described above is that the fibers are in one state are subjected to a rotation in which they are distributed on the helical surface 1 of the outer rotor A and are pressed against this helical surface, and these circumferential fibers are combined into a strand and with at a predetermined transmission speed in the spinning direction while they are subjected to the collecting process are. This transmission speed corresponds to the product of the thread pitch of the screw surface 1 and the Difference between the speeds of the outer and inner rotors A and B.

The fiber transmission speed can thus be optional be determined, namely by changing at least the slope of the helical surface or by changing the lower

309822/0809

difference between the speeds of the outer and inner rotor.

The leading part of the strand Fa transferred into the guide hole 21 is ejected from the guide hole while being rotated. In this state will when the on this If the strand which has been discharged is introduced into the space between the rotating pulling rollers 9 and 9a, the strand is drawn out and twisted at the same time. In this case, when the pulling speed of the rollers 9 and 9a is η times the transmission speed of the strand F, the strand is stretched or pulled n-fold. on the other hand In the course of the above-mentioned stretching or pulling of the fiber strand, the individual components forming this strand Fibers are spun while being appropriately stretched by the friction generated therebetween.

As described above, the disadvantages inherent in the filaments spun by the conventional method explained above are reliably avoided by the method according to the present invention.

The toothed belt 6 used in the first embodiment shown in FIG. 1 can be replaced by pin bodies made of plastic material or metal or by a certain air flow. In the second embodiment, in which the pin body 10 are used instead of the toothed belt, as shown in FIGS The helical surface 1 of the outer rotor A protrudes. If, in this example, the outer and inner rotors A and B are rotated differently, as is the case in the first exemplary embodiment shown in FIGS. 1 to 3, each pin body 10 is first bent, as indicated by 10a, and then it turns back to its original form. This bending and return of the pen body is repeated cyclically, whereby the fibers,

309822/080 9

as shown in Fig. 5, on one side of the pen body are collected, whereby the fiber strand F is formed. The fiber strand F produced in this way becomes then continues downward while sliding along the slope of the helical surface 1, as in connection with FIG the embodiment of FIG. 1 was explained.

In the third embodiment, in which an air flow is used instead of a toothed belt 6, the open one End portion 3b of the slot 4 is bent in the direction of rotation of the rotors A and B, as shown in Fig. 6, and the speed of the outer rotor A is made smaller than that of the inner rotor B, in contrast to the first embodiment. The thread direction of the helical surface 1 is also vice versa, in order to obtain a left-hand thread, whereby the fibers discharged from the split slot 4 are pressed onto the screw surface and slide along the screw surface, while at the pointed end of the split slot 4 through the out of the split slot

entering air flow are maintained, wherein a fiber strand is formed and the same in the spinning direction with a predetermined Speed is moved further.

Device for protecting the fibers from spreading or scattering of their free ends

Another essential feature of the invention is that during the spinning of the strand, during this is pulled out and twisted, a noticeable bending at the boundary between the strand and the spun thread so far can be avoided as possible, and that a distribution or a divergence of the free ends of the fibers can be effectively prevented due to the centrifugal force, whereby a roughening produced on the spun thread is eliminated will.

The above-mentioned essential feature can be effectively through the fiber guide hole 21 of the inner rotor B

30 bb 2 2 /080.9 ■,

become light. This guide hole 21 is connected to the split slot 4a at one end and at its other end at the middle part of the lower shaft 8 of the inner rotor B open to the outside.

Due to the construction or formation of the guide hole 21, the following characteristic features are achieved:

(a) The thread spinning line composed of the center line of the guide hole 21 and the center line of the thread passage from the lower center point of the shaft 8 to the point of contact 22 between the pulling rollers 9 »9a almost straight, with the exception of a slight bend in the thread spinning line at the lower midpoint.

(b) The strand section Fa between strand F and the spun thread Fb coming from the lower center point the shaft 8 is pulled against the pulling rollers 9 »9a, is encompassed by the inner surface of the guide hole 21.

As is known in conventional spinning systems, the strand section Fa is twisted between the end of the Skein F and the spun thread * Fb by the fact that the thread sections first by the rotation of the spinning unit are twisted, and this twist is transmitted back to the strand section Fa, so that the amount of bending of the spun thread Fb is relatively large, thereby resisting the regression of the twist is increased. This in turn delays the retransmission or regression of the twist towards the strand section Fa, thereby causing insufficient twist. The amount of twist of the strand portion Fa is accordingly relatively small, which leads to frequent breakage of the thread.

During the retransmission or regression of the twist Furthermore, the free ends of the fibers are distributed by the centrifugal force caused by the rotation of the strand section Fa

30 9 822/0809

is caused, so that there is a risk that a strong roughening is generated on the outside of the thread.

However, by the above-mentioned characteristic feature (a) of the present invention, rapid retransmission or regression of the twist against the strand portion Fa is achieved, thereby eliminating the cause of the thread breakage. Due to the above-mentioned cha- ^v acteristic feature (b) of the present invention, the strand portion Fa is further guided through the guide hole 21, while a distribution of the free ends of the fibers is suppressed, sq that the formation of roughening is reduced to a minimum "= ,

In practicing the present invention, the apparatus described above may be modified in various ways without their performance to "b <seinträchtigen" So Bv may, for which the device ₉ the difference between the rotational = pay the outer and inner rotor caused _s be optionally modified, the helical surface-1 of the outer rotor 1 can be designed as a conical surface or cylindrical surface, along over its entire length, the axial alignment of the rollers that carry the spinning unit, can be horizontal or inclined, the The screw thread of the helical surface 1 of the outer rotor A can be left-handed, the speed or rotational speed of the inner rotor B can be kept greater than that of the outer rotor A, or the inner hole of the hollow shaft 2 of the inner rotor B can be in the shape of an inverted cone, or the guide hole 21 can be designed as a sloping split slot.

309822/0809

Claims (7)

Claims iy thread-spinning process that follows the open-ended Spinning system works, characterized by introducing the fibers to be processed into an inner rotor from an upper part thereof, the inner rotor being arranged in an outer rotor which is an inner one Has helical surface and is rotated differently with respect to the outer rotor, bringing out the in this inner Rotor introduced fibers one after the other from this rotor at a vertical position of the same against the helical surface of the outer rotor, in such a way that the threads of the helical surface are uniformly crossed or crossed, Collecting the fibers distributed on the helical surface at another point of the inner rotor during the further Rotation of the rotors in order to thereby form a fiber strand at this point, further movement of the fiber strand formed in this way Strand in the spinning direction and pulling the strand moved further in this way by means of pulling rollers while the fiber strand is being drawn is twisted, 2. Device for carrying out the method according to claim 1, characterized by a fiber feed device (20) which introduces the fibers to be processed (f) into the device, an outer rotor (A) with an inner helical surface (1), an inner one Rotor (B) arranged in the outer rotor (A) and provided with an upper hollow part (2) that sucks the fibers fed from the fiber feeder (20), a split slot (4) that conveys the fed Fibers (f) spreads out and presses against the screw surface (1) of the outer rotor (A) under the influence of the centrifugal force of the inner rotor (B), a lower guide hole (21), a device (6), which the screw surface ( 1) collects pressed fibers and thereby forms a strand (F) as well as loading this formed strand against the lower guide hole (21) of the inner rotor (B) 3Ü9822 / 0809 away, a device (29, 29a, 14, I4a, 15, 15a, 16, 16a), which causes a difference in the speeds of the outer and inner rotors (A and B) when the directions of rotation are the same, in order to thereby the fibers discharged from the divided slot (4) uniformly over the helical surface (1) due to the To distribute the difference in the speeds of the outer and inner rotors and by a device (9, 9a) that the Pulls the fiber strand out of the guide hole (21), while at the same time the extracted fiber strand is twisted. 3. Device according to claim 2,
characterized in that the inner rotor (B) is provided with an upper hollow shaft (2) and that the split slot (4) of the inner rotor (B) is in connection with the interior of the hollow shaft (2) and so on its lateral part is opened so that it vertically crosses the threads of the screw surface (1) of the outer rotor (A), whereby the fibers introduced into the hollow shaft (2) are applied uniformly and distributed parallel to the screw surface (1) and are pressed against it. 4. Apparatus according to claim 2,
characterized in that the fiber collecting and transferring device provided in the inner rotor (B) has an endless toothed belt (6) which is provided on one side with teeth (6a) which are in engagement with the helical surface (1) of the outer rotor (A) can be brought, whereby the toothed belt (6) is rotated at a speed which corresponds to the product of the thread pitch of the screw surface (1) and the difference between the speeds of the outer and inner rotors (A and B). 30Ü822 / 0809 -16- 225570? 5. Apparatus according to claim 4,
characterized in that the teeth (6a) of the endless toothed belt (6) are arranged in parallel on one side of the outer circumference of the belt and each of the teeth (6a) has a width which is approximately 1/4 to 1/2 the width of the belt ( 6), so that a void (26) remains on the circumference and this void (26) is connected to the foot part (25) of the side surface of the teeth (6a), whereby the fibers distributed against the helical surface (1) of the outer rotor (A) are pressed, are collected on the side surfaces of the teeth (6a), whereby a strand (F) is formed and this strand (F) between this space (26) and the helical surface (1) of the outer rotor (A ) is held and moved one after the other in the spinning direction. 6. Apparatus according to claim 2,
characterized in that the lower guide hole (21) of the inner rotor (B) is provided in the lower shaft (8) of the inner rotor (B), runs obliquely and communicates at its upper end with a divided slot (Aa), which is provided in the inner rotor (B) and includes the endless toothed belt (6) that the guide hole (21) is open from its lower end at the central outlet of the lower shaft (8) of the inner rotor (B), thereby distributing the free ends of the fibers of the strand, which is pulled out of the guide hole with simultaneous twisting, through the inner one. Wall of the guide hole is suppressed, this distribution is due to the centrifugal force caused by the twisting. 7. Apparatus according to claim 2,
characterized in that the outer rotor (A) is formed from upper and lower parts which are assembled separately to form a body, that the device, which with the same directions of rotation, a difference in the speeds of the outer and inner rotors 309822/08 0 9 ren (A and B) causes circulating parts (11, 12) that are attached to the upper and lower parts of the outer rotor (A) are provided, rollers (14, 14a, 15, 15a, 16, 16a) and bearings (27, 27a) has, which between the upper circulation part (11) and the upper hollow shaft (2) of the inner rotor (B) and between the lower rotating part (12) and the lower shaft (8) of the inner rotor (B) are connected that another rotating part (13) is attached to the upper part of the hollow shaft (2) and has a diameter which is from that of the above mentioned rotating parts (11, 12) is different, which is pressed to generate a frictional connection against the rollers and that a device (18) drives these rollers, whereby the outer and inner rotors (A and B) are different be rotated quickly. Fu / Gu. 309822/0809