DE2326904A1 - MULTIPLE TWISTING DEVICE - Google Patents

Description

PATENT LAWYERS PATENT Attorney DIPL-ING. R. MDLLER-BORNER PATENTANWALT DIPL.-1NG. HANS-H. WEY BERLI N-DAHLEM 33. PODBI ELS KIALLEE 68 8 M 0 N C H E N 22. Wl D E N M AYE R STRAS S E TEL. 0311 -762907 ■ TELEGR. PROPINDUS. TELEX 0184057 '", TEL. 08Π .225585 · TELEGR. PROPINDUS. TELEX 0524244

24- 853A

TOYO TIRE GORD COMPANY LTJh Osaka, Japan

Multiple twisting device

The invention relates to an improved single-ply twisting machine, and more particularly relates to an improvement in the case of a multiple twisting machine, according to which each individual yarn is passed through a so-called two-for-one twisting unit a first wire is imparted, and according to which a ring twisting unit is given to a strand which is made up of composing the combined individual yarns provided with the first wire, gives a second wire.

Up to now there are different types of twisting machines for the production of multi-filament yarns or Multiple threads in use. To these well-known. Machines include a so-called JE £ multan multiple twisting unit the so-called direct double twisting device is used to which a hill twisting device and a flushing device. With another known twisting machine is a described in the 'British patent 896 493 multiple

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Twisting machine in which two individual yarns form a first wire is imparted by two two-for-one twist units, and that of the yarns combined with one another formed strand is given a second wire, these working steps in the form of a single continuous Play work process.

Experience has shown that it is very much in the above-mentioned in the first place known twisting machine difficult is the "tension of the individual yarns to be twisted to regulate so that the individual yarns each receive the same tension, so that it is practically impossible is to prevent the occurrence of yarn breaks in the individual yarns during operation. The bigger the package which is arranged on an inner spindle of the twisting unit, the greater the extent to which the As a result, there are certain limitations on the size of a full package or a full spool that can be placed on the inner spindle of the unit. Since the empty bobbins from the inner spindles withdrawn and fresh bobbins with thread packages have to be placed on the inner spindles, there is a limitation on the output of the 'twisting unit if one considers restrictions on' the Size of the full bobbins with packages.

The second of the above-mentioned known devices is used for processing yarns that consist of assemble orientable endless threads. This device has in combination a device for pulling off of the orientable yarn from a package and for twisting the yarn so that on each revolution a shaft two yarn turns are omitted, furthermore a first yarn transport device, which the device for Tightening and twisting of the yarn is associated and serves to withdraw the yarn at a speed which higher than the speed at which the yarn is pulled from the Yarn or supply body is withdrawn, so that the yarn

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is rotated and stretched at the same time, as well as a device, by means of which the yarn treated in the manner described is wound up in the usual manner. In this apparatus a means for drawing off yarn is arranged in a yarn passage which is passed through a hollow axis of the package is delineated, and this 'Device is driven so that its rotational speed matched to the first yarn transport device is. According to British Patent 896 4-93, the yarn is fed by a two-for-one unit or two-for-one twisting spindle a first wire is lent, and thereafter the yarn drawn from the package is on inevitable Way tramsported through several rollers so that it is guided towards the back of the twisting unit becomes, and after the yarn a hollow shaft of a snail and has passed through a yarn guide, it is directed to the front of the twisting unit, whereupon two are in this Wise treated yarns are twisted together, the yarn being drawn while passing through a drawing device, whereupon this drawn thread is given a second wire by a ring twisting unit.

Experience has shown that it can be used in the processing of yarn with the aid of those described in the second place above known device in which the orientable yarns are first given a first wire which then the double yarn is stretched or drawn out, and finally the drawn yarn is the second Wire is lent, is not easy to wire the To keep individual yarns coordinated in the right way before twisting. Are the two yarns not coordinated with one another, the wire difference between the individual yarns leads to an undesirable shape of the second wire, e.g. to create helical "windings. By stretching the yarn, the effect this mistake is not reinforced, if you have a twisted Experience shows that subjecting two-ply yarn to a stretching process the second wire an aspiration to get into

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To shift towards the trailing part of the yarn, which is passed through the yarn passage in the drawing zone. In other words, the yarn that is twisted for the first time will be in twisted state is primarily drawn without being twisted, but if the yarn twists are in the that Concentrate the entrance of the facility adjacent part, and when finally a state of saturation is reached, the concentrated yarn twists are shifted in the running direction of the yarn in the corner zone through the yarn passage to be led. If the number of twists remaining in the yarn on the one passing through the passage Yarn is reduced to a certain limit value, the described concentration of yarn twists in the trailing part of the yarn. This "shifting and concentration of the yarn twists is repeated during the operation of the device. Because of the presence of the displacement described and the concentration of the yarn twists drawing of the twisted yarn cannot be carried out smoothly, and besides, there is one Irregular distribution of the twine twists - for each individual yarn. As a result, it is very difficult to produce a multi-ply twisted yarn of uniform quality. With in other words, that described in the second place above known device can not be used to produce tire cord for vehicle tires because at Cords made high demands on the uniformity of the wire and the mechanical properties will. However, this known device can be used to produce tire cord during manufacture to be used by conveyor belts, which are preferably used to transport light goods, because in In this case "there is no danger of being severe Accidents with personal injuries play out, as it could be the case if you put such a tire cord on vehicle tires would use.

One might think of the above in second place Place called known device for generating

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to use multifilament thread, with the Keck device is omitted. However, it is difficult with this device to make the first wire with all Each individual yarn is the same and this is due to the uneven. Ballooning attributed to that cannot be avoided with the two-for-one twisting spindle of this device *

The invention is based on the object described * to avoid benen disadvantages of the twisting devices known up to now; to solve this problem is by the invention a multiple twisting device has been created * in which it is possible to perform the first twisting process, the twisting process and to perform the second twisting operation under uniform conditions so that the single yarns as well as the the twisted thread produced from it gets a very even wire, and that 'a thread' of excellent quality with a high production speed can be produced. Furthermore, a twisting device is to be created by the invention, the mode of operation in Compared to the known devices is improved, in particular the generation of a relaxed yarn or the sudden increase in yarn tension at the time impossible make, in which full bobbins are pulled off the second twisting units or full bobbins are pulled off the first twisting units or by resuming the twisting process after a brief interruption in operation will. Furthermore, the invention is intended to provide a Multiple twisting device are created, which is designed as a compact construction and therefore only one takes up a small floor space and is easy to operate so that it is possible to reduce the operating costs reduce. '*' "■

In 'a multiple twisting device according to the invention 'at least' one twisting aggregate is arranged on a substructure, and at least one twisting aggregate belongs to each twisting aggregate. *

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■ .. "■; ■ - 6 -

two two-for-one twisting spindles, which form a first twisting device, and a ring twisting group, which is a second twisting device forms. Each twisting unit serves to bring together several twisted individual yarns and to twist it into a two-thread yarn, as well as to give the twisted yarn a second wire with the aid of the ring twist assembly.

A special feature of the invention is that for each twisting unit several double wire twisting spindles, which are arranged essentially upright, are arranged side by side in the form of a row that is in the essentially at right angles to the longitudinal axis of the twisting device extends, and that the two single yarns twisted for the first time are brought together under the same tension 'standing whereupon the combined yarns are longitudinally behind the first twisting device by several guide links a yarn passage to the second twisting device. Furthermore, according to the invention, the first Twisting devices at the beginning of the operation of the device and at the time of stopping synchronous with the second Driven twisting devices. If the twisting process is to take place under stable conditions, it is important that the To regulate yarn tension in every twisting device. For this purpose, according to the invention, each first twisting device is provided with a tension control device, and the tension values of the twisted individual yarns, which are from the associated yarn packages are withdrawn before the Twisting is regulated, and the tension of the thread produced is also regulated. ΙΊ denotes the yarn tension in the case of the first twisting device, T2 the yarn tension shortly before twisting and 'TJ the yarn tension of one of the Twisted strands, the various tensions must be adjusted so that the tension T1 is lower than the Voltage T2, and that voltage T2 is less than voltage TJ. The described arrangement of the yarn passage with the first twisting device, the synchronous drive and the described tension control make it possible to

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the object of the invention in a satisfactory manner to solve. ',

The subject matter of the invention and advantageous further details thereof are explained in more detail below on the basis of particularly preferred exemplary embodiments which are shown schematically in the drawing. It ^- shows:

1 shows a perspective partial representation of an embodiment of a multiple twisting device;

^: FIG. 2 is an enlarged, exploded perspective view of an assembly of the twisting device according to FIG. 1;

3 and 4- a perspective illustration and a side view of a further embodiment of a Twisting device equipped with a specially designed tension control device; and

5 and 6 show a part of a 'side view' and the Plan view of a synchronously operating drive device which is part of the twisting device according to FIG and 2 forms. ·

In the embodiment of a multiple twisting device according to the invention shown in FIGS. 1 and 2 Several twisting units are available, which are spaced apart lengthways distributed and arranged on both sides of the device. A first twisting device belongs to each twisting unit 1 and a second twisting device 2, which

the latter arranged under the first twisting device 1 is. The first twisting device 1 has two two-for-one twisting spindles 1a and 1b, the second twisting device 2 includes a ring twisting assembly, and the first Twisting device 1 and the second twisting device 2 are by a drive device yet to be described synchronously driven. The first twisting device 1 is composed of two two-for-one twisting spindles 1a and 1b,

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■ - 8 -

and each of these spindles has a housing or a Balloon guide part 4 and a spindle 5, which by a endless belt 7 and one rotatably with the spindle connected pulley 8 is driven. With each ring twister assembly 2, which the second twister forms, a spool 11 is arranged on a spindle 10 which is driven by an endless belt 12. the the two two-for-one twisting spindles 1a and 1b are arranged next to one another and their spindles 5 »are arranged in an upright position are rotatably mounted in two bearings 13, which are installed in an upper spindle bank 14 so that they lie on a line that is substantially in the right Angle to the longitudinal direction of the upper spindle bank 14 runs. According to Fig. 1, there are several twisting units on both sides of the multiple twisting machine arranged so that they form rows extending in the longitudinal direction, ^ a die first twisting device of each twisting unit two two-for-one twisting spindles 1a and 1b of the type described are on each side of the multiple twisting device after ■ Fig. 1 two rows of double wire twisting spindle η available, i.e. in the case of a twisting unit, a two-for-one twisting spindle 1a is arranged in an outer row on the side, while the second two-for-one twisting spindle 1b is arranged in a rear row that extends parallel to the front row extends, and the associated second twisting device 2 is under the outer first twisting device 1a arranged.

If a multifilament yarn is to be produced, the consists of more than two single threads, the required number of two-for-one twisting spindles can be used of the type described in the form of a group of adjacent spindles for the merging of to enable yarns that have been twisted for the first time in preparation. In this case it is important that it be done in an even manner Loosening wire twisting spindles can be selected that go to the outer or front row or to the back or inner row

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belong. The two-for-one twisting spindles in the front row are hereinafter referred to as "front spindles", while the rear two-for-one twisting spindles are referred to as "rear spindles" Spindles ". To manual pulling off and To facilitate the placement of yarn packages or bobbins, it is advisable to use each of the spindles. 5 of the first twisting device to be inclined forwards or outwards so that the angle of inclination is in the range from 0 ° to 45 °.

Although in the embodiment described here, each bearing 13 is arranged on a line that is in the at right angles to the longitudinal axis of the upper spindle rail 14, but it can also prove to be useful to arrange the bearings 13 on a line slightly inclined to a line which is at right angles to the longitudinal axis the upper spindle bank 14 runs.

With the two-for-one twisting spindles 1a and 1b in each case a thread is drawn from a thread package 15, the is arranged on the associated spindle 5, and the yarn is passed through a Garhdurchlaß that at the spindle 5 is formed by an upper opening 6 of the spindle, whereupon the yarn is discharged from an outlet opening 9 which is formed in the associated rotatable disk 8, and then passed up to a thread guide 17 to become.

The yarn moving along a path a between the outlet opening 9 and the thread guide 17 tends to form a balloon moving around the housing 4 available. If the yarn is passed through the yarn passage inside the spindle 5, the yarn tension is controlled with the aid of an in lig. The known type of yarn tension control device shown in FIG. 5 is regulated ₉ This regulated yarn tension is referred to below as T1, and the yarn tension along the web a is referred to below as T2 . A yarn made from. a thread package 15- peeled off

is imparted to the arrival of the ^above arns on the thread guide 17, a first wire, as it is described by numerous conventional devices are known and, for example in British Patent Specification 896 4-93. With each revolution of the spindle 5, the yarn drawn from the package 15 is given two turns.

The individually twisted yarns 18a and 18b are then brought together by a thread guide 19, and the through the two yarns formed strand 20 is the second twisting device, i.e., the ring twister 2, fed along a path b which is behind the two-for-one twisting spindle 1a Urid runs from top to bottom through an upper thread guide 26 and a lower thread guide 27. The double strand of yarn 20 is then taken up by a delivery device, to which two positively driven lower delivery rollers 28 and an upper delivery roller rotatably mounted thereon. 29 belong. This delivery / direction is arranged on a horizontal order 3 of the device. The double delivered by the delivery facility Rope of yarn 20 is then wound onto a bobbin 11, with it through the ring twisting device 2 the second Wire is loaned "According to FIG. 2 belong to the ring twisting device 2 a Hing 30 and a traveler 31 · In this embodiment, each spindle is the ring twister 2 rotatably mounted in a neck liner 32, the is installed in a lower spindle bank 33 below the associated first twisting device 1. The ring 30 is rigidly connected to a ring rail 34 of a known type.

In the embodiment of FIGS. 1 to 3 it is It is very important that a balance is maintained between the tensions Q? 2 of the two individual yarns, which are used by the both. Bpppeld wire twisting spindles 1a and 1b are delivered. A voltage regulating device is required to ensure this Arranged along the paths of the yarns just in front of the thread guide 26. This facility is described below described in more detail with reference to! "ig. 3 ^ nd 4 ·.

Ve.tsuch.en showed that there were certain irregularities in terms of yarn tension when the first and second twisting devices have one and two Coils are withdrawn or put on «To remedy this According to the invention, a reserve device for regulating the tension of the yarn within a part is to be provided the yarn path is arranged, which runs from the yarn guide 19 to the yarn guide 26. To this reserve facility include two guide rollers 21 and 25 according to FIG blocks or the like, not shown, are rotatably mounted in a stationary manner, as well as a central guide roller 24 which is rotatably mounted in a support piece 22, which by one on a part of the frame, not shown Device attached tension spring 23 is constantly biased upward. Thus, the support piece 22 can be under the Influence of the tensile force of the biasing spring 23 move upwards, while the double strand of yarn 20 over the guide rollers 21, 24 and 25 runs, and when you see the tension of the double ι th yarn strand is reduced so that the strand becomes slack, the Eederj23 pulls the guide roller 24 upwards, so that the slack part of the double strand of yarn is taken up by the device as a reserve; takes the Tension of the double yarn strand 20 again, the guide roller 24 is pulled down again, so that a uniform Tension is maintained. This regulated yarn tension of strand 20 is referred to below as T3 designated. ■

Experiments have shown it to be very important is to maintain a proper balance between the yarn tensions TI, T2 and T3, and that the Voltage T3 must be higher than voltage T2 while the Voltage T2 must be greater than voltage T1.

For the voltages T1, T2 and T3, the following applies appropriately the following fourth: the tension T1 is maintained in the range of 0.005 g / denier to 0.050 g / denier; the voltage T2 is controlled to be in the range of 0.035 to 0 * 150 g / denier, and the tension TJ becomes in the range

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held from 0.070 to 0.0200 g / denier. In any case however, the voltages are chosen so that T2 is greater than T1 and that T3 is greater than T2. More precisely is the voltage T2. in the range from 2 to 10 times T1, and the voltage T3> ranges from 1.1 to 4 times T2.

In order to create more favorable operating conditions, it is advisable to use a voltage control device, which makes it possible to regulate the aforementioned yarn tensions in the manner indicated below. If the Starting and stopping of the first twisting unit and the second twisting device are effected synchronously, the following relationships should apply:

T1> E and
T3 = T2 + E2

Herein, K denotes a frictional force between the yarn and the thread guides 83 and 19 "and" shown in FIG E denotes a force exerted in the yarn along the path between the opening 9 and the thread guide 83 as a result the torsional force creates loops.

If these conditions are not met, the yarn will lean away from the package 15 along each section of its path to the described delivery device to sag, so that it is impossible to use the two individual yarns to be provided with the same wire in each case.

In the following, the device for tapering the yarn tension T2 will be described in more detail. According to FIGS. 3 and 4, the tension T2 is provided by a tension spring regulated. According to FIG. 3, a central thread guide 83 is attached to a support piece 84. To the facility for To regulate the twine tension T2, two sensors 74 and 77 » with the help of hub sections 72 and 73 on the support piece 84 are rotatably mounted. The probe 74 has a free end portion 74a which is angled so that it a thread path crosses between the thread guide

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and the thread guide 83 extends. There is also a rod 76 ″ which, as shown in FIG. 3, has a free, horizontally arranged end section 76a and is fastened to the hub section 73 of the feeler 74. The feeler 77 has a similar angled free end section 77a, which crosses a yarn path which also extends from the rear thread guide 17 ″ according to FIG. 3 to the thread guide 83. Furthermore, there is a rod 78 which has a free, horizontally arranged end section 78a and is fastened to the lobe section 72 of the sensor 77. A horizontally arranged support plate 86 is connected to the support piece 84 and, in addition, a support piece is inserted into the support piece Built-in spring anchoring bolt 87. The thread guide 19 is also attached to the support piece 84-. A tension spring 84-a connects the horizontal end section 78a of the rod 78 to the anchoring bolt 87> and a further tension spring 85 connects the horizontal end section 76a of the rod 76 to the anchoring bolt In the arrangement described, torsional forces, which strive to move the free end sections 74-a and 77a of the sensors upwards, are constantly acting on the feelers 7 ^ and 77. In other words, the yarn tension T2 of the yarns 18a that are twisted for the first time and 18b can be kept at the same value by the tensile forces of the springs 84-a and 85. The first-time twisted yarns 18a and d 18b then run according to FIG. 3 to the thread guide 19, where the yarns unite, in order to then run to the thread guide 26.

In the embodiment described here, instead of the device described with reference to FIG. 2 used with the tension roller 24- a modified yarn reserve device, which is shown in Fig., 3 and 4- and works with a lever 90, which with the help of a liabenabschnitts 89 is rotatably mounted on the support piece 84-. One of the free ends of the lever or the rod 90 carries a counterweight 91 »which is adjustable along the rod, is and the other free end portion of the rod has an angled portion 92 which the path of the

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double skein of yarn between the thread guides 19 and 26 (jig. 2) crosses. A horizontal rod 88 is attached to the support piece 84 in such a way that the double strand of yarn 20 moves under it. Thus, when the counterweight 91 is positioned along the rod 90, the angled portion 92 of the rod pushes the double strand 20 upward so that the tension T3 is controlled by the rotational force exerted by the counterweight 91 on the rod 90 . Even if the double strand of yarn 20 becomes slack as a result of the device being stopped, the slack portion of yarn can be picked up along the path between the yarn guides 19 and 26 in that a reserve loop is formed from the yarn strand between the horizontal rod 88 and the yarn guide 19 while maintaining the desired yarn tensions Ta and T3. In this embodiment, the sensors 74 and 77 can simultaneously act as thread monitors to detect thread breaks and shut down the twisting device if necessary. According to FIGS. 3 and 4, a limit switch 79 is arranged on the support piece 84 in such a way that a sensing rod 93 of the limit switch lies over the horizontal end sections 76a and 78a of the rods 76 and 78. If one of the yarns 18a and 18b, twisted for the first time, breaks, the relevant sensor 75 or 77 is pivoted so that the associated horizontal end section 76a or 78a presses the feeler rod 93 upwards. As soon as this happens, the limit switch 79 is actuated to stop the twisting device. Since devices for stopping a twisting device, which can be actuated with the aid of limit switches, are known, a more detailed description should be superfluous. If it is necessary in the embodiment described here to interrupt the operation of a twisting unit for any reason, for example to turn a broken thread, the tension of the yarns 18a and 18b is reduced, so that both feelers 74 and 77 are rotated and the horizontal end sections 76a

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and 78a of the associated. Rods swivel the i <ü-hl rod 93 upwards. Under these circumstances it is impossible to put the twisting unit in question back into operation. In order to remedy this situation, however, according to FIGS. 3 and 4, a lever 80 is present, which is rotatably mounted on the bearing axis of the sensor 77. The lever 80 has a free end portion 81 which extends over the horizontal Endabs chnxt te '76a and 78a of the rods 76 and 78 and is normally separated therefrom by a small distance. The other end of the lever 80 can be brought into engagement with a fastener 82 fastened to the support piece 84. When the upper end of the lever 80 is engaged with the bast member 82, the free end portion 81 of the lever is positioned above the horizontal end portions 76a and 78a of the rods 76 and 78, and when it is necessary to prevent actuation of the limit switch 79, is brought the mentioned end of the lever 80 out of engagement with the hasty member 82 and pivoted counterclockwise about the bearing pin 72 as shown in FIG. 4, so that the free end portion 81 prevents the horizontal end portions 76a and 78a of the rods 76 and 78 over the rod -93 actuate the limit switch 79. -

To avoid the occurrence of undesirable yarn tension it is, as mentioned, important to prevent the first twisting unit 1 during the start-up and shutdown of the The twisting device is driven synchronously with the second twisting device, i.e. the single-twisting device 2.

For this purpose, according to FIG. 1, the endless gills 7 and the endless belt 12 of a common one Drive device powered off. According to Fig. 1 is a. common, drive motor 35 available to the one pulley 36 belongs. -

According to Fig. 1 extends over the entire length of the Frame of the twisting device a main shaft 39 »with their a pulley 38 rotatably connected to a free end is that of the engine pulley 36 from a

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endless belt 57 is driven. Furthermore, a belt pulley 50 »cLLe sits on the main shaft 59 via an endless belt 51, which drives a belt pulley 52 on a further shaft 55 to which a small gearwheel ^ M- is connected in a rotationally fixed manner. According to FIG. 1, there is another small gear 58 which is seated on a horizontal shaft 57 and is driven by the gear 54 via two intermediate gears 55 and 56. According to Fig. 1 there are also two pulleys 67, which are non-rotatably provided with vertically arranged shafts 66, which are rotatably mounted on both sides of the twisting device with the help of bearing blocks, not shown, attached to the frame of the twisting device of the pulleys 67 at their upper end, while a bevel gear 65 is rotatably connected to the lower end of each shaft 66. Each of the bevel gears 65 meshes with a bevel gear 64 which is seated on a horizontal shaft 65. A belt pulley 60 is connected to each shaft 65 in a rotationally fixed manner. According to FIG. 1, the two pulleys 60 are arranged in mutually corresponding positions with respect to the standing shafts 66, and they are driven from a pulley 59 by an endless belt 61. According to FIG. 1, this drive device also includes two belt tensioning rollers 62. At the other end of the frame of the twisting device, two belt pulleys 68 are rotatably mounted in a manner not shown. Two endless belts 7> run over the two pairs of belt pulleys 67 and 68, so that these belts are driven by the associated drive belt pulleys 67. In order to prevent the belts 7 from slipping unnecessarily with respect to the pulleys 67 and 68, a plurality of tensioning and guide rollers 69, which are rotatably mounted on non-illustrated means, are arranged on the frame of the twisting device according to FIG. 1. Furthermore, a plurality of drive belt pulleys 70 are seated on the main shaft 59, each of which is assigned to the groups of ring twisting spindles 10. Each of the endless belts 12 runs over one of the drive r

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pulley !! 70 and the whorls of the four spindles 10 of each group to drive these spindles. Several tensioning and guide rollers 71 are rotatably mounted on the twisting device that is ordered, in order to prevent the endless gills 12 from slipping through with respect to the pulleys 70 and the drive whorls. On the main shaft 39 is a main gear on the transmission-side end of the twisting device. 4-0 arranged and rotatably connected to the main shaft. Two delivery rollers 28 are each provided with a small gear 49 at their ends adjacent to the main gear 40. The front small gears 49 become vog. the main gear 40 is driven by idler gears 41, 43 and 47. The rear small gears 49 are according to i'ig. 1 of the main gear 40. On ^ wisehenzahnrader 42, 44, 45 and 48 angetrieben.-Referring to FIG. Λ, the gear 45 can be in and out of engagement with the gears 42 and 44. install, and when the gear wheel 45 from the toothed wheels 42 and 44 is disengaged, these 'gears can work together directly. The further gear 46 shown in FIG. 1 is a Kesery gear which can be used instead of one of the gears 41 and 42. If the direction of the yarn lent first and second wire has to be changed, you use an additional, not shown 'Zwi see η ^{gear to transmit the drive force of the gear 54 s} to the gear 55, instead of the gear 54 directly to let the gear 55 mesh. Since the spindle 5 of the first twisting unit 1 and the spindles 10 of the second twisting device 2 as well as the lower delivery rollers 28 are all driven in the manner described by a common motor 35, it is possible to start the first turning process and the twisting process synchronously at the twisting station and stop lasssn, so that all difficulties are eliminated, which would otherwise occur with a missing adjustment of the yarn tension or with. Sag could occur.

The drive device described offers a very important advantage when operating the twisting device,

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which consists in that if the number of the first Twist turns and the number of twist turns should be changed in the same proportion, the number of Rotations can easily be changed by just changing the take-up speed of the lower delivery rollers 28 changes. For this purpose it is only necessary to adjust the recording speed by changing the gears and 48 to amend accordingly. Should the number of first yarn twists and the number of twist twists be

can be changed in different ways, it is only necessary replace the gears 47, 48 and the gear 55. Since you only need the one common motor 35 in the drive device described, results for the device for driving the spindles 5 and 10 a very simple arrangement, so that there is a compact structure of the multiple twisting device, in which another Advantage of the invention can be seen.

In the case of the above-described double-ply twisting device, a special device serves to bring the spindles 5 out of engagement with the endless drive belt 7. This device is present because when a yarn breaks in one of the two-for-one twisting spindles 1a and 1b, It is necessary to cut off the drive of both spindles of the twisting unit 1. This device is shown in detail in Figures 5 and 6. To facilitate understanding of the invention, the device for driving a twisting unit will be described below with two twisting devices. According treated FIG. 5 is the spindle ^ a. mounted on a support arm 96 (Fig. 6) bearing mounted such that the Triebwirtel 5a ¹ of this spindle can be driven by Keibungsberührung with the drive belt 7 in a another. Spindle 5b is rotatably mounted in a bearing attached to a second support arm 97 in such a way that the drive whorl 5b 'is a result of this spindle he frictional contact with the drive belt 7 is driven o The two support arms 96 and 97 are on the spindle bench

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■ mounted pivotably around the associated bearing pin 95 or 98. The support arm 96 is connected to the support arm 97 by a rod which is hinged to the support arms with the aid of bolts 105 and 106. According to FIG. 6, therefore, each pivoting movement of the support arm 96 leads to. a corresponding pivoting movement of the support arm 97. A handle 100 is connected to the end 90a of the support arm 96 by means of a rod 101. Furthermore, according to FIG. 6, there is a tension spring 102 which is connected to one end of the support arm 97, and the other end 102a of which is fastened to the spindle bank 14, so that the drive hosts 5a 'and 5''b' are always against the endless drive belt. 7. A stop in the form of a transverse pin 103 is built into the handle bar -101. A stop plate 104 is fastened to the spindle bank 14 in such a way that the stop pin 103 comes to rest against it when the handle 100 according to FIG direction of the arrow C is gezo'gen to the outside. When this happens, the support arms 96 and 97 about their bearing axes 95 and 98 of FIG. pivoted in the direction of arrows A and B 6, so that the Triebwirtei 5a 'and 5b ¹ of the drive belt 7. It is thus possible to interrupt the drive of both spindles 5a and 5b at the same time with the aid of the movement of the handle 100 just described agplatte 104 can lift off, the support arms '9 & and 97 are automatically pivoted by the tension spring opposite to the arrows A and B about their bearing axes 95 and 98, so that the host 5a ¹ and 5ΐ>' at the same time again to rest on the drive belt 7 so that the contact pressure between the drive whorls and the drive belt can be adjusted, a device for adjusting the length of the connecting rod is switched into the connecting rod 99. As mentioned, the spindles 5a and ^ Pd of the two two-for-one twisting spindles can be in or out of engagement with the drive belt independently of all the other two-for-one twisting spindles of the multiple twisting device. 7 are brought,

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if it is necessary to twist broken threads again or shut down the two-for-one twisting spindles in question for any other reason

To the advantages of the multiple twisting device mentioned above According to the invention, calculations were made with regard to the requirements for the device Floor area and labor costs and the results with the corresponding results for the the known methods described at the outset were compared. This comparison is based on the generation of two-thread 840 denier nylon tire cord in an amount of 10 tons within 24 hours. The results are compiled in the following table, where the information on method A applies to an arrangement in which Twisting directions serve to impart both the first and second wires to the yarns, while the Information about the method B for a so-called direct double twisting device of the type described above known -type apply

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Raw material

Known procedure

Method according to the invention

Procedure A Terianren

1st wire "2nd wire

Ring twisting unit direct double ring double wire zwira-1. 2. Twisting unit wire wire pr. spindle

Multi-ply stretched uylon yarn, 840 denier ,.

Structure of the cord

Number of rotations

Spindle speed

Effectiveness of the machine

Ring diameter, mm

840 D / 2 47.0 (Z direction) χ 47.0 (S direction) Dr./10 cm

6500 5500 6500

101.6 139.7 3500

$ 95

7000

165.1

Need for floor space, dead,

810

1115 405

Number of spindles or aggregates "for each
contraption

216

400

200

Number of devices 23 23 ■

Energy consumption, kWh, per 100 kg of product

Comparative figures for labor costs 100 kg each

141

1.1

264

0.6 126

0.4

309850/0931

According to the table above, it is possible with the help of a multiple twisting device according to the invention, the Significantly reduce space for housing the device And to reduce both energy consumption and wage costs to a considerable extent. Compares one further the arrangement of the two-for-one twisting spindles according to the invention both on the front side and on the Back of the device with a known arrangement in which only a single row of two-for-one twisting units is present, the considerable advantages of the arrangement according to the invention are readily apparent In other words, in the case of the known single-row arrangement, in comparison with the device according to FIG Invention a. 1.48 times as high expenditure for the spatial accommodation, 1.20 times as high expenditure for "die Paying the workforce for weight loss and. On putting the coils and a 1.41 times as high effort for the "monitoring" and maintenance of the device «,

Expectations

30985-0 / 0931

Claims (11)

EXPECTATIONS 1 .1 multiple twisting device, geke η η ζ eic lanet by at least one twisting unit, to which a first twisting device (1) belongs, which has at least two two-for-one twisting spindles (la, 1b), which are arranged essentially upright, furthermore a device (19) a second twisting device (2) designed as a king twisting device, which is arranged under the first twisting device and serves to pull the double yarn strand (20), which from the device for merging the Yarns is discharged to lend a second wire, a device (28) for inevitably feeding the Ioppelgarnstrang to the second, twisting device and several thread guides (26, 27), which determine a yarn path (b) behind the first twisting device, along which the double yarn strand is fed to the feeding device .. 2. Multiple twisting device according to claim 1, characterized marked that facilities exist are, which are used to drive all the twisting units of the device so that for each twisting unit the first Twisting device (1) and the second twisting device (2) and the feed device both during commissioning as well as during the shutdown of the twisting device are driven synchronously. 3. Multiple twisting device according to claim 2, characterized in that the drive device a main engine (35) belongs, and that a first drive belt (7) is present, which from the main engine over a first intermediate power transmission device (67, 68, 66, 65, 64, 63, 60, 59, 61) and a main shaft 309850/0931 . ■. - 24 - (39), the latter extending parallel to the longitudinal axis of the twisting device, that this first power transmission device is inevitably driven by the main motor via a second intermediate power transmission device (57, 58, 55, 56, 54, 53, 52, 51, 50) that there are several second drive belts (12) which can be driven from the main shaft, that a power transmission device (4-0, 41, 43, 47, 42, 44, 45, 48) is present which serves to to drive the feed device (28), and which is coupled to the first power transmission device, that said first drive belt (7) drives all double wire twisting spindles (1a, 1b), and that each of the second drive belts is an endless belt (12 ), each of which drives several ring twisting devices (2) forming a group. , 4. Multiple twisting device according to claim 1, characterized in that a first device (83, 74, 77, 74a, 7 &, 76a, 77a, 78, 86, 87, 84a, 85) is present, which serves to the tension (T2) of the yarn along a J% hn (a) between a delivery point (9) of the To regulate two-for-one twisting spindles (1a, Ib) and the device (19) for bringing together the yarns, and that one second device (21, 25, 24, 23; 90, 89, 84, 91, 92, 88) is present, which serves to control the voltage (T3) of the To regulate the double yarn strand (20) along its path (b) between the device for merging the yarns and the feed device (28). 5. Multiple twisting device according to claim 1, characterized in that the two-for-one twisting spindles (1a, 1b) of each twisting unit in the first twisting device (1) are aligned on a line which is in the substantially at right angles to the longitudinal axis of the twisting device runs. 6. Multiple twisting device according to claim 1, characterized I do not denote that several first threads 30 9850/093 1 rich composed _o 7. multiple twisting device according to claim 6, characterized it does not show that twisting units are arranged on the front of the device » 8. multiple twisting device according to claim 6, characterized g e k e η η ζ e Ine t that twisting units on both Sides of the device are arranged » 9. multiple twisting device according to claim 3, characterized characterized in that each of the first twisting devices (1) is provided with a coupling device (100, 101, 96, 99 »107, 97, 102), which enables all twisting devices (1a, Ib) of the relevant Twisting unit - at the same time in or out of engagement with the to bring endless belt (7) of the first drive device, and that this is independent of all other twisting units is possible © 10. Multiple twisting device according to claim 4, characterized in that s the second yarn tension control device allows to take up an excess yarn section as a reserve, as it arises when the tension of the yarn is reduced when the twisting device is interrupted! 11. Multiple twisting device according to claim 4, characterized characterized in that to the first yarn tension control device a yarn tension detector (74, 77> 79 »93, 76a, 78a) and a limit switch (79) include that the limit switch is connected to a device for actuating the drive device · is connected, and that the limit switch is actuated as soon as the yarn tension detector has a predetermined notices lower yarn tension. 309850/0931 Blank page