DE2129485A1 - MONITORING DEVICE FOR WIRE PROCESSING OR WIRE PROCESSING MACHINERY - Google Patents

Description

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"Monitoring device for wire processing or wire processing Machinery"

The invention relates to a monitoring device for wire processing or wire processing machines, in particular for stranding machines, for automatically stopping the Machine with the bobbin almost empty.

In the case of stranding machines, the wire spools only have a limited capacity. In addition, the wire spools are not all become empty at the same time. The operator who mostly has to look after several stranding machines is only able to fill a limited number of wire spools to monitor. Even more so than from the operator Other jobs such as changing the bobbins and the like are also expected in order to improve the profitability of such To increase systems, downtimes must be kept to a minimum be reduced. Automatic shutdown devices have already been used in stranding machines that e.g. work with the help of flaps that open when the Wire on a contact ring and thus the circuit

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close a shut-off device. With other well-known Devices are used feeler levers that loosen when or the lack of a wire to operate the switch-off device excite a magnet. However, these known devices are disadvantageous because especially with high-speed Machines and relatively thinner when stranding Wires between the contact ring and the wire only a bad contact can be made, the response of a Relays into question in many cases. But also the use. mechanical feeler lever is on machines that run at high speed too insecure to guarantee smooth operation * especially since the isolated power supply to the sensors on the individual coils a very cumbersome design of the '' coil carrier bearings would require. To remedy this Disadvantages has already become known from the patent specification DL 14 090 a device in stranding machines in which two mechanical stopping devices are provided, one of which is arranged on the circulating body and the other on the fixed yoke ring. Besides that this Device is quite complicated in structure, it is - like the aforementioned devices - for fast-running stranding machines Cannot be used with a circumferential body.

The object on which the invention is based is that Creation of a structure that is simple in structure and reliable in operation Device that can be used economically even with high-speed stranding machines and automatically stops the machine.

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as soon as this "with insufficient amount of wire on the coil core appears necessary. According to the invention, this is achieved by a reflex light barrier known per se, which is dependent on on the reflectivity of the wire and / or coil core material lying in the beam path, the shutdown of the The machine takes action when a sufficient amount of radiation falls on it or when the beams are deflected. In It is a further development of the invention for stranding machines a circumferential body advantageous that the circumferential body consists of a metallic tube or a glass fiber reinforced There is plastic tube in which one or more loading openings are provided per coil carrier, which simultaneously as a passage opening for the rays of the reflex light barrier to serve. Furthermore, it is with non-reflective winding material and reflective coil core or with reflective Winding material and non-reflective bobbin advantageous that the beam path of the reflex light barrier in a right Angle to the coil longitudinal aclise runs. On the other hand, it is at reflective winding material and reflective or non-reflective Coil core advantageous that the beam path of the reflex light barrier is inclined to the coil longitudinal axis.

In the drawing, an embodiment according to the invention is shown.

Fig. 1 shows the arrangement of a full coil in the pipe jacket the stranding machine in which the loading opening is currently in the operating position and the from the reflex light barrier to the

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Meets pipe surface and is returned. Further is schematically the shutdown device in the form of a Relay represented by the reflex light barrier itself or by an intermediate amplifier is operated. ■

FIG. 2 shows how the rays of the reflex light barrier, which is inclined to the longitudinal axis of the coil, impinge on the wire and be thrown back again.

Fig. 3 shows how the rays hit the wire-free part of the Hit the coil core and be deflected.

Fig. 4 shows a full spool of non-reflective Winding material and reflective coil core, whereby the reflective barrier is arranged at an angle of 90 ° to the longitudinal axis of the coil.

Fig. 5 shows the same arrangement of the reflex barrier, ' the rays just striking the wire-free part of the reflective coil core.

Fig. 6 shows the same arrangement of the reflex barrier,

the rays impinging on reflective winding material, and '

Fig. 7 shows how the rays hit the wire-free part of the hitting non-reflective coil core.

The tube of the stranding machine, made for example of metal or plastic, is denoted by 1. The metallic one However, the pipe can also be coated with plastic. It is also possible that the plastic pipe is metallized

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the loading opening 2 can the coil 3 in the rocking stored coil carrier 4 can be used and removed again. With 5 the rollers for the pipe 1 are designated, the one on the circumference between the feed openings are arranged in a known manner. The coil core 6 of the coil 3 is provided with wire 7, which is processed into a rope v / should be grounded. So that no faults can arise in the rope due to the lack of a wire, an electro-optical Scanning device - hereinafter referred to as reflex light barrier - provided, which was designated with 8.

The mode of operation of this device is based on the known principle of intensity modulation of a light beam in such a way that a beam coming from a light source is reflected by the object to be scanned and triggers a photocurrent in a photoelectric cell. A light beam thus serves as the carrier of the information, while the information itself is contained in the intensity of this light beam. The reflex light barrier 8 can - if necessary via an amplifier not shown in the drawing - trigger a relay 9 for the drive motor of the stranding machine if the light beam is reflected back onto the photocell, or ¹ if it does not reach the photocell again.

In Fig. 1, the light beam 10 hits the pipe jacket and is reflected by this, i.e. that the light beam 10 at this moment the wire 7 to be monitored on the spool does not meet. The reflection of the pipe jacket gives the Reflective light barrier 8 the same impulse as the wrapped goods

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return. If the pipe is in a rotating motion, as indicated by arrow 11 in Pig. 2, the feed opening 2 runs through the path of the light beam 10, which now falls through the feed opening 2 onto the wire 7 that is still present in sufficient quantity and is thrown back from this onto the reflex light barrier, as indicated by the beam 12. As long as this process takes place, the cut-off relay - which was no longer shown in the drawing in FIG. 2 and the other figures - is not made to respond, so that the machine continues to run undisturbed. Only when the .Strahl 10 - as shown in FIG. 3 - no longer strikes the reflective wire 7, but rather the reflective coil core at an angle oC, the beam 10 is deflected so that the deflected beam 13 no longer hits the Reflex light barrier 8 returns. This condition has the effect that the relay switches off the switch for the drive of the stranding machine and, if necessary, causes the braking devices for the rotating pipe 1 to be brought into operation. The same effect occurs \ a, when the spool core 6 is made of a non-reflective material, because in such a case, the light beam 10 is also not reflected back to the reflective light beam detector so that exist with respect to the Aussehaltvorgang the same conditions. '

Further exemplary embodiments are shown in FIGS. 4 to 7. In Fig. 4 there is the. Wire 7, for example, does not

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reflective or only partially reflective material. For example, the copper wire can be coated with a wrapping or otherwise with insufficiently reflective material. In such a case, depending on the nature of the coating material, the beam 14 emitted by the reflective light barrier 8 is either completely or only reflected to an inadequate extent, so that the reflected light barrier does not respond. As soon as - as in .Fig. 5 - the wire is almost unwound in the last winding layer and the reflective coil core 6 comes to light, the beam 14 is reflected, as was indicated by the beam 15. As in the above example, the drive motor can now be switched off and the braking device engaged.

In the device according to FIG. 6, the winding material 7 consists of reflective material, so that the beam 14 of the reflex light barrier 8 is thrown back on this, as indicated by the ray 15. In this case the reflex light barrier 8 no impulse for switching off the drive motor is given, but the winding material 7 continues settled. ·

In Fig. 7 the case is shown that the Wp-ckelgut 7 the Coil core 6 - except for a few turns - has exposed. Since 'however, the coil core in the present case is made of non-reflective Material consists or is coated with such a substance, no beam is reflected, so that now the reflex light barrier 8 transmits a pulse to switch off the drive motor when the beam is not reflected.

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Claims (4)

- 8 patent claims: ί! ^ Monitoring device for wire processing or wire processing Machines, especially for stranding machines, ■ for automatically stopping the machine at almost empty reel, characterized by a known reflex light barrier (8), which depends on the reflectivity the wire and / or coil core material lying in the beam path causes the machine to be switched off, if a sufficient amount of radiation is reflected on them or if the rays are deflected. 2. Monitoring device for stranding machines according to claim 1, with a £ ra-revolving body, characterized in that the circumferential body (T) consists of a metallic tube or a glass fiber reinforced plastic tube, in one or more feed openings (2) are provided for each coil carrier (4), which simultaneously act as a passage opening serve for the rays of the reflex light barrier (8). 3. Monitoring device for stranding machines according to claim and 2, with non-reflective winding material and reflective Coil core or with reflective winding material and non-reflective coil core, characterized in that the The beam path of the reflex light barrier (8) runs at a right angle to the longitudinal axis of the coil. 4. Monitoring device for stranding machines according to claim and 2, with reflective winding material and reflective or non-reflective coil core, characterized in that the beam path of the reflective beam (8) is inclined to the longitudinal axis of the bobbin. 209881/0280 BATH ORIGINAL L e r s e i t e