DD141180A1 - MONITORING DEVICE FOR DISCONNECTING MACHINING MACHINES - Google Patents

Abstract

The invention relates to a monitoring device for switching off stranding machines of all types in wire-tearing, where insulated wires are drawn from spools, stranded and wound up on spools. Each individual core is part of a current-carrying system. The aim of the invention is the radial reduction of the burden of sliding contacts and maintenance times. The inventive task, which is to reduce the proportion of interference-prone parts and thereby increase the reliability, is achieved by the fact that the signal device is rotatably connected to the rotating system of the take-up, the individual wires on one side with a common ground and otherwise with connected to each other in parallel relays and the entire relay system via a slip ring with the mass, via a second slip ring with a power source and via a third slip ring with the turn-off relay of the drive circuit of the stranding machine is connected.

Description

211 000 - "-

Title of the invention

Monitoring device for switching off stranding machines

Field of application of the invention .

The invention relates to a monitoring device for switching off stranding machines of any type in Aderriß ,, where isolated wires are withdrawn from coils, stranded and wound on coils and each vein is part of a current-carrying system _o

Characteristic of the known technical solutions

Devices that signal wire tears on stranding and then shut down the stranding are known in large numbers and are used according to the possibilities for bare wires are the most diverse contact devices known to be closed or opened by the circuits »All these devices are not suitable for isolated Wires and should therefore be disregarded.

As u «a known from DD-PS 94 135 _0, are performed at Mesh welding lines, the current for stranding insulated wires or conductors in movably supported metallic nipples which pivot radially outwardly at break of a wire due to the centrifugal force and -against a fixed Contact ring »As long as the centrifugal force effect is large enough and the contact surfaces are clean, a shutdown of the stranding machine is achieved in a relatively simple manner. But it can also happen that there is no electrical contact when the contact ring or nipple gets dirty. "The result is either none

or delayed shutdown and consequent rejection. These disadvantages should be eliminated according to the cited patent by the fact that each delivery reel is coupled in terms of rotation with a speed monitor which delivers the impulse to shutdown the Vers'eilmaschine falls below a specified speed of the coil to start the Verseilmaschine a bypass switch is necessary step during This time, an Aderriß, there is no shutdown, as long as the lower response speed of the speed monitor is not exceeded. But even these shutdown is not useful for all occurring Drahtrißfälle tears example a vein in the Verseilpunktes, then remains in most cases the tensile stress in the individual vein due to the existing Verseilverbandes received, so that no shutdown pulse can be triggered by the speed monitor «This disadvantage should be eliminated by a solution described in DD-PS 111 948. Here is a Drahtrißabschaltvorrichtung is described, in which each individual core is part of a self-contained current-carrying system ο Here, one end of the insulated wire is attached to the drain spool and the second, already located in the stranding end connected via sliding contacts with a monitoring device that A disadvantage of this monitoring device is that for the stranding of η cores at least η sliding contacts are required, which must be constantly maintained to keep the monitoring device operable. "This means - especially in the Her-position of vieladrigen control lines - the installation and maintenance of as many sliding contacts. The susceptibility to failure and the resulting maintenance costs are therefore very large.

Object of the invention

It is an object of the invention to reduce the high cost of electrical sliding contacts .auf a minimum, the susceptibility to failure and the maintenance significantly reduce _β

Explanation, the essence of the invention ...,

The object on which the invention is based is to provide a monitoring device for shutting off stranding machines of any type, which reliably shuts off the stranding machine when a single insulated strand of a multi-stranded artery structure breaks.

The invention solves the problem in that the wire tear detecting and relaying signaling device is rotatably connected to the shaft of the drive of the take-up reel and

in this for each strand of the stranded, 'on the take-up reels to be stored wire bundle with the wire beginning

, electrically connected relay receives and all relays connected in parallel with each other and via a slip ring with the mass and via another slip ring with a

ner power source are connected, wherein the in series corresponding relay contacts are connected via a third slip ring with the turn-off relay of the drive circuit of the stranding machine, while located on the coils of the stranding wire ends, in a known manner with

connected to the common ground.

Furthermore, the invention provides that the rotatably connected to the shaft of Aufwickelspulenantriebes entrainment disc axially parallel bores and KlemmstelIeη for the wire ends and the shaft with a continuous, achszentrischen bore and with several, opening into the latter, arranged in the vicinity of the drive plate, obliquely The invention also applies to the fact that each relay is assigned a Zener diode and a control lamp » ₍

embodiment

Reference to the drawings, the invention is explained in more detail below «It means:

Three thirty. 1 shows a longitudinal section through the drive bearing for the rewinder with the monitoring device FIG. 2 shows the switching scheme for the monitoring device

Fig. 3 shows another possible circuit diagram for the monitoring device O.

1, the drive bearing of the take-up reel 23 consists of a shaft 3 mounted in a vision housing 1, which is driven in the housing 2 by means of the bevel gears 4, 5. The drive bearing itself is mounted in a bearing, not shown in the drawing. or drive stand attached. On the protruding from the housing 1 end of the shaft 3 die.Mitnehmerscheibe 6 is fixed, while at the other end of the shaft, the signal device 7 is arranged rotationally fixed. The shaft 3 has an axially centered longitudinal bore 8, which is connected by obliquely outwardly extending radial bores 9 with the lateral surface of the shaft 3. "bearing side, the drive plate 6 isolated clamping points 10 on the signal device 7 are three slip rings 11 and the housing 2 arranged on a holder 12, the current collector 13, Fig «. 2, which shows a circuit diagram for the entire rotating monitoring device, - shows that the running of the coil 14 cores 15 are placed with their remaining on the coil ends to a common mass 16 (z "B ₀ the stranding machine) ο The ends of as a stranded bundle on the take-up reel 22 incoming wires 17 are fed to the terminal points 10, which are isolated from each other and against the mass 16. From the terminal points 10 lead insulated conductors through the longitudinal bore 8 in the signal device 7j in the ever stranded wire 15, a relay 17 is provided. The relays 17 are connected in parallel, and each relay is a control lamp 18 and a Zener diode 19 associated with the tens diodes 19 have the purpose, the predetermined voltage, which can be influenced by different wire lengths and cross sections, to keep as constant as possible «, About one of the slip rings 12, the entire monitoring device is supplied with power while a second slip ring 11 connects to ground 16. The third slip ring 11 provides the connection between the circuit of the signaling device 7 and the shutdown relay 20 for the drive circuit of the Varseilmaschinenanlage ago «The number of relays 17 is determined by the number of max. Wires to be stranded 15 »If less wires 15 are stranded then the unclaimed relays must be bridged» For this purpose, each relay is 17

assigned a bypass switch 21. The monitoring device works as follows:

Occurs anywhere between the coil 14 · and Aufwiekelspule 22 Aderriß, then the current in the signaling device 7 circuit is interrupted. As a result, the switch-off relay 20, which is coupled to the circuit, also de-energises and thus interrupts the drive circuit of the stranding machine drive. "With reference to the control lamp 18 assigned to each wire 1-5, it can be ascertained" which wire 15 has broken. "This monitoring device operates reliably and safely and is Due to the fact that the signal device 7 was included in the rotating system, in contrast to the previous embodiments, where one slip ring was required per wire, only three slip rings are independent of the number of cores necessary"

Furthermore, there is the possibility of local bridging by means of switches for the unconnected relays. Exactly the same effect is achieved when, instead of the contacts closing in series for the purpose of effecting a cut-off, contacts closing in series for relaying purposes use parallel opening contacts (Fig * 3) «» For the operation of the warning lights 18, both opening and closing contacts can be used, depending on whether the normal operation or the malfunction should be indicated by lighting up,

Claims (1)

Inventory Anaphril 1. Monitoring equipment for disabling stranding machines of all types, where insulated wires (wires) are drawn from spools, twisted and wound on spools, and each individual wire is part of a current - carrying system, characterized in that the signaling device (7) is connected to the Shaft (3) of the drive of the take-up reel (23) is rotatably connected and for each strand (15) of the on the take-up reel (23) -auflaufenden strandil- .10 th wire bundle a with the wire beginning electrically connected relay (17) in itself and all relays (17) connected in parallel and on the one hand via a • slip ring (11) with the mass (16) and via another slip ring with a Power source are connected, the relay contacts via a third slip ring (11) are connected to the disconnect relay (20) of the drive circuit of the stranding machine, while the wire ends located on the reels (14) of the stranding machine are connected in a known manner to the common mass (16) are" · 2t monitoring device according to item 1, characterized in that with the shaft (3) rotatably connected drive plate (6) clamping points (10) and the shaft (3) with an acliszentrischen longitudinal bore (8) and with inclined, in the bore ( 8) opening, near the drive plate (6) arranged radial bores (9) is provided, _o " 3 «Monitoring device according to item 1, characterized in that each relay (17) has a Zener diode (19) and a bypass switch (21) and a control. Lamp (18) is assigned » .Share Zeldmonqen