Automatic device for counting cast iron pipes in a flow
Abstract Generated abstract
The paper describes an automatic device for counting cast iron pipes in a production flow while identifying the manufacturer address, machine number, shift, and pipe class for transmission to a plant control panel. The proposed system reads a binary mechanical code cast into the pipe end face as projections and recesses, converts it to electrical signals with a magnetic reading head, and processes these signals through synchronization, distribution, coincidence, and decoding circuits connected to counters. Pipe class is determined separately by a radioisotope albedo recorder. Laboratory tests of the manufactured device indicated that it could be applied in the technological flow of pipe production.
Full Text
Automatic Device for Counting Cast Iron Pipes in a Flow
G. I. LOPANDIN
(Presented by the scientific seminar of the Research Institute of Electronic Computing)
In modern flow production, automatic counting is one of the most important tasks, the solution of which facilitates and streamlines the process of production management.
The device is intended for registering cast iron pipes, indicating the full address of the manufacturer and the class of the cast pipe, and for transmitting the information to the plant office control panel.
The automatic counting device is based on the principle of reading information about the machine number and the shift, recorded in a binary mechanical code on the end face of the pipe in the form of projections and recesses obtained in the process of casting the pipe.
A specially manufactured magnetic reading head serves to convert the mechanical code into an electrical one. Reading takes place as follows.
The pipe is clamped in chucks and set into rotation; by the beginning of the pipe’s rotation, the reading head is brought up to its end face, and if the air gap of the magnetic reading head is overlapped by a projection on the end face, then the signal acting at its output corresponds to “1”; if by a recess, then to “0.” The command to read is issued after the key has passed the air gap of the magnetic reading head.
The key is a projection on the end face occupying sector A (Fig. 1). Sector B is occupied by the codes of the machine and the shift; the remaining part of the pipe carries no information.
The block diagram of the device is shown in Fig. 2. The mechanical code recorded on the end face of pipe 1 and converted into an electrical code by means of reading head 2 passes through shaping device 3 to the right-hand inputs of block 4, which is a trigger coincidence circuit consisting of five cells.
The pulses taken from the reading head at the moments when the key passes its air gap serve to synchronize multivibrator 5 with the mechanism for moving pipe 6. The output of the multivibrator is connected to distributor 7, which uses a counting circuit and is supplemented by a decoder made in the form of a rectangular diode matrix with 5 outputs. Thus, each input pulse of block 5 corresponds to a definite combination of excited cells, to which, thanks to the use of the decoder, there will correspond—
there must be a definite output circuit, the only possible one for the given combination.
From the outputs of distributor 7, the signals arrive at the left inputs of coincidence circuit 4, whose outputs are connected to the machine-and-shift decoder 8. The machine-and-shift decoder 8 and the class decoder 9 together form a device with 120 outputs, to each of which SÉI-1 counters are connected. The class of the pipe is determined by means of a radioisotope albedo recorder [1].
Fig. 1. End of a pipe with the key and the binary code of the machine and circuit
Fig. 2. Block diagram of the device for automatic counting of cast-iron pipes
The device described was manufactured and underwent laboratory tests, which showed that it can be used in the technological production flow of pipes.
REFERENCES
- L. K. Tatochenko. Radioactive Isotopes in Instrument Engineering. Atomizdat, Moscow, 1961.