SU144442A1 - Control device such as a weaving machine - Google Patents

Description

In industry, devices are known to the weaving machine for shutting it down when the warp threads break, made in the form of process contacts that are closed when the threads break, these are turned on by the electromagnet of the machine stop and blocking the normally open contacts that turn on the power of the electrical circuit when the machine runs and turn it off stop (for example, automatic weaving machine type AT-60-L and others). There are also known devices for counting the number of inclusions in the operation of a machine, as well as its operating time or simply, including an inductive sensor for supplying current to the electric motor of the machine, electrically switching on an electromagnetic impulse counter, accounting for the number of inclusions in the machine and another drive counter. revolutions, taking into account the time (or just) of this machine.

The proposed control device, for example, to the weaving pack, as well as the known, includes process contacts, closed when the warp threads are broken, connected to the electromagnet for stopping the machine through the electrical circuit turned on by the blocking contacts when the machine is working, differs in that it uses an electromagnetic unit counter to account for breaks and drive speed counter for counting time is simple, and in its wiring diagram there are three relays, one of which is included in the process contact circuit and is equipped with contacts to turn on the electromagnet for stopping, and the other relay, which includes both counters with its contacts, and the third relay, which turns off the power of the first relay.

No. 144442. 2 These differences in the device provide an increase in the accuracy of accounting for the number of cases of thread breaks and the time of a simple machine.

FIG. 1 shows the basic circuit diagram of the basic observer of the AT-60-L loom; in fig. 2 - photograph of the general view of the device; in fig. 3 - the circuit diagram of the device.

On modern automatic linen machines of the grades AT-60-L, AT-60-L5, AT-120-L, etc., as well as on mechanical linen machines, to stop the machine when the warp threads are broken, electrical action watchers of FIG. one.

The use of electrical observers on the looms makes it possible to relatively easily mechanize the account for the breakage of the warp threads and the time of just the loom for this reason.

For this purpose, a proposed monitoring device has been proposed, which is included in the electrical circuitry of the existing basic observer.

A general view of the control device is shown in FIG. 2 and consists of two counters: the counter / is intended for counting the number of cases of breaks in the warp threads and counter 2 for counting the time of a simple loom due to breaks in these threads.

A standard electropulse meter of the brand SEI-1 of the Lenpribor plant (voltage 48 V, frequency 50 Hz) is used as the counter /. This counter has a five-digit scale indicating the maximum number of breaks up to 99999 and the digital readout with the scrolls.

Counter 2 consists of the standard depth gauge of the UGN-1 grade of the Lenpribor plant and the SD-60 electric motor, which drives the depth gauge discs through the gearbox.

The depth gauge has a five-digit scale indicating the time of the machine in minutes (with an accuracy of 0.01 min).

The maximum time counted by the pointer is up to 999.99 minutes. or more than 16 hours

The device operates as follows. When one or several threads of the warp are broken, the technological contact TC (Fig. 3) closes the Pb relay coil circuit which, by one of its normally open contacts, turns on the machine stop electromagnet E.O. At the same time, another normally open contact relay shunts the contacts TC, and the third its normally open contact, in short, prepares the PZ relay coil circuit for subsequent switching on.

At the approach of the loom of the loom to the rear position, the starting handle is turned off and the machine is stopped. At the same time, the limit switch VC closes, applying voltage to the coil of relay 2, which includes with its normally open contacts the counters AIS and CB, as well as the relay RZ, which with its normally closed contacts opens the coil circuit of the relay PI.

When the weaving machine is started up, the dangling warp threads will be connected and tensioned, so the process contact TK is open, the relay P2 is de-energized and the counters / and 2 are turned off.

The interaction of the electrical circuits of the meters U (SEI) and 2 (CB) with the electrical circuit of the main observer is clear from FIG. 3, where M is the electric motor of the weaving machine.

Central Scientific Research Institute of Pallas,. on the basis of the tests of the device, recommends it for implementation in industry.

At the conclusion of this institute, the practical value of the instrument is that it does not distract the weaver’s attention from

their production work, automates the accounting breakage and at the same time fixes not only the number of breaks, but also the time spent on their liquidation.

The device is simple in its design and assembled mainly from standard units (electric pulse meter SEI-1, device UGN-, relay). It can be easily connected to a weaving machine equipped with an electrical fundamental, and can be widely used, since basic observers of this type are becoming common in weaving.

Checking the operation of the device connected to the AT-60-L automatic weaving machine installed in the weaving workshop of EZ TsNIILV revealed that the device clearly defined both the number of cases of breaking of the warp threads and the time of the simple weaving machine.

Subject invention

A control device, for example, to a weaving machine, which includes process contacts that are closed when the warp threads are connected to an electromagnet for stopping the machine through an electrical circuit that is turned on by locking contacts during machine operation, in order to increase the accuracy of the number of cases of thread breaks and time is just a machine for this reason, it uses an electromagnetic unit counter to count breaks and a drive rev counter to count time simply, and in its electrical circuit it has three relays, one of which are incorporated in the circuit is provided with contacts and technological contacts for energizing the electromagnet to stop and another relay, comprising their contacts both counters, and the third relay, turn off the power of the first relay.

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