DE1510552A1 - Device for monitoring threads and slivers on textile machines - Google Patents

Description

ing. Ernst Breuning

7016 Gerungen 2 r— ™ —_,

Spring route 6 I TV. T * T

Device for monitoring threads and slivers on textile machines

There are devices for monitoring threads on their Compliance with the prescribed career on roving known, in which the überwaohte thread one by one horizontal axis rotatably mounted sensing element holds in an almost vertical, unstable position · breaks or is missing the thread, then the feeler leaves this position and actuates an electrical contact that carries a signal and a Control effect triggers «Each sensing element has a single, separate contact element, which is in an individual protective housing These units are housed by external electrical lines interconnected · The Assembling these known devices is relatively simple, but the manufacturing effort is approximately great and accordingly expensive.

The present invention eliminates this disadvantage _e Si · consists essentially in a device for monitoring threads and slivers for compliance with the prescribed track on textile machines, in particular roving machines, in which a sensor element rotatably mounted about a horizontal axis of the monitored thread or sliver in one unstable position is held, but leaves this position in the event of path deviations of the material and therefore actuates an electrical contact element, which triggers a signal or a control effect and in which the 909881/0333. ■ - ₂ -

Parts of the contact organ of several sensing organs as common Contact slide formed and housed in a common protective housing assigned to a plurality of sensing elements are·

The invention is illustrated below with reference to a schematic embodiment s in game β and four figures in use on one Roving machine described in more detail In Figure 1, 1 denotes the sensing element, which is against applies the thread 2 running above the device and in front of the feeler element 1 to the front · The feeler element 1 consists of its axis 3 is made of one piece and is mounted in the front and rear walls of the protective housing s 4 made of transparent plastic. The contact piece 5 is on the axis 3 attached · Ee stands over axis 3 with the at the same time Contact rail 6 serving as a bearing in a conductive connection As soon as the sensing element 1 is no longer held by the thread 2, it tilts around its axis 3 near the front. This represents the contact piece 5 with the contact rail 7 establishes a conductive connection. The manufacture of this device is extreme ι easy. The protective housing 4 can consist of extruded plastic, the contact rails 6 and 7 can be pressed in with the appropriate shape of their cross-section * will. The partially different pitch in the case of roving machines only requires different distances between the bearing bores in production. According to the invention, the compact surfaces of the contact slide ' ntn, ζ · Β · the contact surface 6 of the contact rail 7t have a particularly suitable contact material, e.g. hard »over,

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This material can be galvanic, chemical, thermal or be mechanically applied or attached. It can calibrate over the entire length of the contact rails or only on the sections used extend.

in Figure 2 is a particularly simple example shown in son. It has the U-shaped part 9 the protective housing made of metal, while the cover-shaped Part 10 of the same is made of insulating material. The part 9 also serves as a bearing for the axis 3 of the sensing element 1 and as a contact bar that connects via axis 3 with the movable contact piece 11 fixed on the axis 5 in conductive connection is »the spring-loaded part 12 of the contact piece s 11 is designed and arranged in terms of the angle of rotation in such a way that it is fastened to the cover-shaped part 10: Contact bar 13 touches when the sensing element 1 in the event of a thread breakage leaves his position. This type of execution also has the advantage that the sensing element 1 together with its contact piece 11/12 in the rotatability about its axis 3 is not limited is, whereby damage to the sensing element 1 or the device by violent overturning is avoided. In Figure 3, a schematic embodiment is shown ^ in which the sensing element 14 is designed as a bracket * The dowel-shaped, made of metal part 15 of the protective housing s has spherical, drilled through bearing troughs 16, against which the spherical collar 171 of the sensor element 14 is attached by the weak spring 18 is pulled. Part 15 also serves as a bearing and contact bar. The end of the sensing element designed as a contact piece 19 puts between part 15 and contact bar 20 »- -

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which is attached to the plastic, TJ-shaped part 21 of the protective _{housing f} ne a conductive connection as soon as the sensing element 14 is no longer held by the thread 2 in its unstable position.

According to the further invention, the protective housing or « Parts of the same inside or outside with cam-shaped or strip-shaped Provided elevations on which the movable part of the contact piece or a section of the sensing element run can, and these are arranged in such a way that the sensing element is outside of its normal movement during this run-up. area is located. This is also shown schematically in the exemplary embodiment in FIG. In embodiments of the invention according to the examples in FIGS. 1 and 2 The elevations can also be on the outside of the lid-shaped part of the protective housing as a crouch or hump arranged and be effective on the portion of the sensing element 1 that is close to the axis 3.

Another inventive idea is, each pühlorggn or a small group of adjacent sensing organs, e.g. within the stanzenfelde3 of a roving machine, with one Signaling device, e.g. to equip a signal lamp. As a result, the operating personnel recorded the fault location on the first view.

According to the further invention, the signal lamp consists of a glow lamp, which the contact organs with only one very small s ^ rom encumbered.

It is particularly advantageous to use glow lamps according to the invention without using built-in series resistors, and a series resistor common to all glow lamps in one to arrange common line.

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In pig. 4 shows a corresponding circuit example.

On the secondary side of a protection transformer 23 are the Vorwideretand 24 and the control relay 25 connected. They lead the leads 26 and 27 to the in groups, e.g. monitoring devices 28 and 29 divided up according to the punching fields of a roving machine In the protective housings 30 and 31 there are 6 contact organs each 32 and 33 and ^ e a glow lamp 34 and 35 » As soon as one of the contact organs is activated, the lights up associated glow lamp on. In addition, the control relay 25 comes into action, whereby the purpose of stopping the drive motor the NC contact 35 and actuation of a Geaanit ** - signals the normally open contact 36 are actuated. The usage a common resistor 24 not only makes the device cheaper, but it also provides the arrangement of the same also provides protection against current overload if the supply lines 26 and 27 become defective.

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Claims (1)

Claims g L. 1. Device for monitoring threads and slivers for compliance with the prescribed path mn Sextilaaaohinen, in particular roving machines, in which a Föhlorgan Ton rotatably mounted about a horizontal axis is held the monitored thread or tape in an unstable position, but this position in the case of deviations in the path Material leaves and thereby actuates an electrical contact element which triggers a signal or a control effect, characterized in that the non-moving file of the fc contact element of several sensing elements is designed as a common contact rail and is housed in a protective housing assigned to several sensing elements ₉ characterized in that the contact rails have a particularly suitable contact material on the contact surface. 3. Apparatus according to claim 1 and 2, characterized in that the contact pieces movable by the sensing elements between two parallel contact rails when they are actuated establish an electrical connection. ι. 4 · Device according to claim 1 feis 5, characterized in that the movable contact pieces are spring-loaded and between the contact rails are designed to be pivotable, rotatable or displaceable. 5. Apparatus according to claim 1 to 5, characterized in that a part of the protective housing »itself is designed as a contact rail. 6 · Device according to claims 1 to 5 »characterized in that the protective housing acts as a bearing for the sensing elements is trained· ORIGINAL BATHROOM 909881 / Ό33fr 7. Device according to. Claim 1 to 6, characterized in that that the sensing element and its axis form a unit «8.Device according to claim 1 to 7», characterized in that Take the geia aiue protective housing inside or outside with you cam-shaped or leisxenförüiigen bumps are stranded on the the moveable · rope of the contact piece »or a section dea pühlorganee can run up, and which are arranged in such a way that the sensing organ is outside of its normal movement range during this run-up. 9 · Device according to claim 1 to 8, characterized in that each Fühloxgan or a small group of adjacent | Sensing organs old bucket signal device, e.g. equipped with a signal lamp. fOo device according to claim 9 »characterized in that is used as a signal lamp of a glow lamp. 11 · Device according to claim 10, characterized in that the glow lamps used are those without built-in series resistors can be used, and a series resistor common to all glow lamps is arranged in a common line « 988 1/033 Blank page