SU826373A1 - Device for coding printed-circuit board patterns - Google Patents

Description

I

The invention relates to automation and computing, in particular, to devices for encoding drawings of printed circuit boards, and can be used to obtain control programs for means of automated production of printed circuit boards, such as numerically controlled drilling machines and coordinators.

The known device for coding drawings of printed circuit boards contains a coordinate sensor connected via shapers with reversible counters, a control unit connected to an encoder, to an information recording unit and to a trigger, pulse generators connected to a coordinate former, and I and O.Sh. O elements.

The disadvantage of this device lies in its structural complexity.

The closest technical solution to the proposed is

a device comprising a control unit connected to counters and registers, a cipher motor connected to a register, sensors of coordinate signals and directions of movement, whose inputs are connected to the input of the corresponding signal conditioners, pulse generators, and And 2 elements.

Its disadvantage lies in the low accuracy of the device.

The purpose of the invention is to improve the accuracy of the device.

The goal is achieved by the fact that in a known device containing a control unit connected to counters, to an information recording unit, to a pulse shaper, the inputs of which are connected to signal sensors, and the outputs are connected to an encoder and to a shift register connected to an information recording unit , and pulse generators, multipliers are introduced, the inputs of which are connected to the corresponding generators and pulse shapers and the control unit, and the outputs connected to the corresponding counters are connected m s. encoder, and the command sensor connected to the encoder, the output of which is connected to the registration unit.

The drawing shows the block diagram of the device.

It includes sensors 1 and 2 signals and directions of movement according to the corresponding coordinates, respectively, pulse shaper 3 (at the corresponding coordinates), multipliers 4, pulse generator 5, counters 6, information recording unit 7 containing control node 8, and rotary hammer 9., encoder 10 , shift register II, control unit 12 and command sensor 13.

The device works as follows.

When moving the side carriages, on which photoelectric sensors 1 are fixed, the latter form a read pulse at the moment of intersection of the grid line of the drawing along the corresponding ordinate. The read pulses through the corresponding signal conditioners 3 are fed to the input of the multipliers 4, in which, for one read pulse, the corresponding number of pulses is entered in the counter 6 of the corresponding coordinate.

The coding of elements of the printed circuit board is carried out in incremental coding mode, and any grid point can be selected as the starting point.

When the central carriage is manually moved, the sign of the direction of movement (+ or -), the ordinate symbols (x or y) are automatically determined by the sensors 2. The information received through the drivers 3 is transferred to the encoder 10.

If at the coordinate point it is necessary to lower the work tool, i.e., to record the technological command drilling, the operator presses the button of the sensor 13 of the technological command, at E. TOM, a code is entered on the encoder 10.

The information obtained during the reading process is displayed for control on the digital display of the control unit 12.

To turn on the perforator 9, the operator from the I2 unit enters the punch command on the control unit 8. The rotary hammer 9 is turned on and outputs a sync series to control unit 8. The write pulses generated by the control node are sent to the clock input of the SJEIG register 11. Each output of the shift register 11 corresponds to a certain line in the information frame. The information buses of the encoder 10 are alternately polled with a shift register I1. The information thus obtained flows through the control unit 8 to the code electromagnets of the perforator 9.

After punching the last line of the frame from the encoder 10, a command is sent to the control unit 8 to turn off the punch, the digital information in block 12 is reset, and the device is ready to encode the next point (contact area) of the circuit board drawing.

If the contact pad is located in the grid node, and the distance from the center of the contact pad to the grid node is a multiple of 0.5 mm, then a manual set of information frame is provided in this case.

In this case, the necessary information is entered by the operator from block 12 manually.

Claims (2)

Invention Formula A device for coding drawings of printed circuit boards, comprising a control unit connected to counters, an information recording unit and pulse makers whose inputs are connected to signal sensors, and outputs are connected to an encoder and to a shift register connected to an information recording unit, and generators impulses, in particular, in order to improve the accuracy of the device, it contains multipliers, the inputs of which are connected to the corresponding generators and pulse shapers and the control unit, and the outputs are connected to the corresponding counters connected to the encoder, and a command sensor connected to the transmitter, the output of which is connected to the registration unit. Sources of information taken into account in the examination 8263736 1. U.S. Patent 3,567,950, Cl. 250219, publ. 1971. 2. US patent 3693066, cl. 318576, published. 1973 (prototype).