DE1665951A1 - Method for stranding elements for communication cables to the next higher stranding group with twist direction changing in sections - Google Patents

Description

SIEMENS AKTIENGESELLSCHAFT P 16 65 951.1-34

Berlin and Munich

VPA 67/0054 cm / sdz

Method for stranding elements for communication cables

to the next higher stranding group with alternating sections

Direction of twist

- Addendum to the patent (patent application P 16 65 831.4-34) -

The subject of the main patent is a so-called SZ stranding process for communication cables, i.e. a process for stranding elements for communication cables to the next higher stranding group with a twist direction that changes in sections. In the method according to the main patent, the elements to be stranded are fed to a revolving stranding device with a buffer, taking up a fixed angular position relative to the space, and from this, again a fixed WinJf * !. "? ~ 'F ° ?: .'- ■? Taking up space _f subtracted; the memory content of the internal memory is continuously increased or decreased while the direction of rotation of the stranding device remains the same and the change in memory content of this intermediate memory is controlled depending on the length of a section of the finished stranding group that has the same twist direction Stranding device with always constant direction of rotation so that there is no deceleration and re-acceleration of masses rotating around the stranding axis, as is the case with SZ stranding devices, the rotation of which is changed in sections.

The different twist properties of successive sections of the finished stranding group are used in the process naoh the main patent solely through the continuous change of the memory content of the arranged in the stranding device Buffer is reached. As a result of this alternating continuous enlargement and reduction of the contents of the Speioher are the speeds at which the stranded

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Elements that - seen in the stranding direction - in front of the intermediate storage and pass through the stranding points located behind the buffer store, differently. So although those to be stranded Elements after being removed from the intermediate storage unit due to the constant direction of rotation of the stranding device are roped up again, this results in a resulting twist of the finished stranding group in one way or the other Direction, depending on whether the memory content is increased or decreased.

Since the process according to the main patent is an SZ stranding process in which the elements to be stranded the stranding device is fed to the stranding device in a fixed angular position to the space and in which the finished stranding group is the stranding device leaves again in the same way, it is possible to carry out several stranding steps one after the other in a single operation to switch. Above all, however, this method enables the twist lengths to be increased in this way in successive sections choose that for further stranding to a higher-level stranding group the effective twist length over the entire length of the strand group produced has a single value. This is possible because in this method the lengths are consecutive Sections of different twist direction can be chosen as desired, since the transition from a section with constant twist direction on a subsequent section with opposite twist direction only the sign of Change speed of the memory content needs to be reversed, the reversal times completely free and without fixed mutual assignment can be chosen.

In a further development of the method forming the subject of the main patent, the invention provides that the rate of change of the memory content of the intermediate storage also runs steadily during the renewal. This way the mechanical Stresses that act in the form of tensile stresses during the reversal of the stranding elements on a for these elements harmless moisture is reduced.

009887/0457 -3-

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To explain the invention, the course of the distance y between the axes is one of its in the ol-prene curve in FIG. The contents of the memory are shown as the intermediate memory increases or decreases. This your division he. Thus, according to the representation of Fig. 3 of the main patent, viiilircnd the time span t ₁ , y increases linearly, 30 that the memory content of the intermediate memory increases. During the time period t ₂ , y decreases linearly, so that the memory content of the intermediate memory is reduced.

In the implementation of the invention, the original control of the Achcabotand y is not abrupt, but the reversal takes place during the time periods Γ. or 'I ^ vorger.or.r-cn, which are deliberately not too small, in which the verccilir.g of cores with 0.4 bit, 0.8 r.; n conductor diameter has: u ^ icrnvicrcrn For example, the times' J) ₁ and ϊ ₂ Gt \ -; a. equal to 1OfS of the times t- and tp f eatzuseir.cr; the rate of change dy / ct of the buffer.

To carry out the process according to the main patent is already in the main patent in its Pig. 4 an intermediate store having a changeable memory content from ir.ehrere hollen darirestej Iz leading the elements to be stranded, which are each arranged on two axes, the distance between them

009887/0457 bathroom original

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is changeable. In a further development of such an arrangement it is provided that the deo Acliser.faros can be changed with the help of to be carried out by spindles, the thread pitch of which is in the Ililhe the Ua turning point linearly with the distance from the uni turning point decreases.

In Fig. 2, the embodiment of such a buffer is shown, which in principle the example of the I-'ig. 4 of the main patron. This "intermediate storage" is designed as a roller storage with three turns. The roller group 9 consisting of three rollers is fixedly mounted in the taps 8, which rotate at a constant angular speed η via the drive 7 10. The elements 1 to be stranded enter the non-running buffer store through a cement hole in the liner block 11 at speed ν, and are wound onto the rolls of roll groups 0 and 10 in three turns,! cr.te 1 then through a center hole of the bearing block 12 with the speed ν.

The gear wheel 13, in which the gear wheels 14 and 15 engage, is firmly connected to the bearing block 11. As a result of the rotation of the θ, the two giants HfiLlnirJidgrri and vii-t are veffciiriiigjien via the gears 14 and 15

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provided shafts (spindles) 16 'and 17' opposite the Frame 2 set in rotary movements, the directions of rotation of which are opposite to one another; are.

On the shafts 16 ″ and 17 ′ this is the roller group 10 The bearing axis is mounted on the drivers 18 and 19. the Driver 18 and 19 are designed such that always one of them with the worm gear thread of the associated shaft 16 'or 17' is engaged. In this way the Roller group 10 moved continuously in one or the other longitudinal direction.

The loosening or coupling of the drivers 18 and 19 is triggered by hitting the carrier. · against the stop pins 20 and 21 or "against the angles 22 and 23. 3 When hitting the driver 18 and 19 to the Ansciilagstaf te 2ö and 21 or at the angles 22 and 23 is the mechanical coupling of the engaging driver with the worm ganggev / inde of the associated shaft and the other driver with the worm thread of the one assigned to it Shaft engaged. In this way, each time the stop pins 20 and 21 or the angles 22 and are reached 23 reversed the longitudinal direction of movement of the group 10, so that 03 requires an external reversal.

In order to ensure that the rate of change of the storage contents of the intermediate storage is constant even during the original control, the thread pitch of the worm thread of the shafts 16 ^f and 17 'increases in the. vicinity

0 0 8887 / 04S7

the stop pins 20 and 21 or the angle 22 and 23 linearly with the location coordinate up or down.

In the yig. 3 and 4 /

imMfcreygfttY · «/ is a further embodiment of an arrangement for carrying out the method according to the invention, in which the change in the axis distance 'u ± z is carried out using a cam disk drive with, for example, an approximately elliptical guide link.

The one in the Pig. 3 and 4, shown in different forms, is also designed as a roller storage system with three turns. In the frame 8, which rotates at a constant angular speed η and is driven by the drive 7, the suspension group 9, which consists of three rollers, is firmly mounted. Three more roles are to be eir.er second, longitudinally movable roller group 10 zi; ccr..T.cr. collected. The elements 1 to be stranded enter the rotating buffer store through a central bore in the bearing block 11 at speed v and are wound onto the rollers of the roller groups 9 and 10 in three turns. After unwinding, the sl iron te 1 then come out through a Hittenbohrung the bearing block 12 iait the speed ν.

The axis of the roller group 10 is in a longitudinal slot of the frame 8 movable. This longitudinal movement is caused by the rollers located on both sides of the axis of the roller group 10

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Thrust lengths 24 controlled, the nit one end on the axis of the roller group 10 and with its other end in a Kurver.ccheibengotriebe η it approximately elliptical guide Kulisco cir.griff er .. This cam disc gear consists of each one radial longitudinal slot for the guide pins 28 of the push rods 2 «V-having rotating disks 25» which are driven by the spur gear 27 via the belts 26. Through the radial longitudinal slots of the rotating disks Z ^v j , the guide pins 28 engage in the disks 29, which are fixedly arranged on Kah:.: O: i and which are provided with an approximately elliptical guide link.

With the rotation of the Rahraens 3, the line group 10 becomes by the cam disk drive formed from the disks 25 and 29 in connection with the guide pins 28 in the desired V / eise moved backwards into the longitudinal slot of the fiahncr.s 8.

Due to the approximately elliptical shape of the Pührungsiculieser; The disks 29, which are fixedly arranged on the taps, ensure that the rate of change of the storage contents of the intermediate storage unit is constant even during the overrun. In the embodiment shown in FIGS. 3 and 4, the guide links of the disks Zd, which are fixedly arranged on taps, are approximately elliptical. It is -jedocii jauch np the guide slots another Forni au encoder .. Vjßsen |. However, da3 the Führuugskulisje i »& GM ifähe is the ever .I veL'3 IWFT |.?.

Claims (3)

Claims 1. Procedure for stranding elements for communication cables to the next higher stranding group with sections alternating twist direction, in which the elements to be stranded occupy a fixed angular position to the space of a revolving stranding device with an intermediate store are supplied and from this, again occupying a fixed angular position to the room, are deducted, and in which the Storage content of the intermediate storage unit continuously increased with the direction of rotation of the stranding device or is reduced in size and in which this memory content change is in each case dependent on the one to be produced Length of a section of the finished stranding group having the same twist direction is controlled, according to the patent . · (Patent application P 16 65 831.4-34), characterized in that the speed of change of the memory contents of the intermediate memory (3) also during the over-control runs steadily. 2. Arrangement for performing the method according to claim 1, in the case of the intermediate store having a changeable memory content consisting of several elements to be stranded leading roles, which are each arranged on two axes, the distance between which can be changed, characterized in that the change in the axis distance (9) with the help is carried out by spindles (16 *, 17 '), the thread pitch of which at the height of the reversal points is linear with the distance at the turning point abniant. 3. Arrangement for carrying out the method according to claim 1, in the case of which the memory content can be changed ο Temporary storage from several elements to be stranded ^ leading roles, each on two axes <*> are arranged, the spacing of which can be changed, thereby identifying - ^ shows that the change in the Aoheen distance (9) with the help ^ a cam gear (25, 28, 29) with preferably ^ j approximately elliptical guide link is carried out.