SU473198A1 - Tablet for the reader of graphic information - Google Patents

Description

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The invention relates to the field of automation and computing.

Plates for graphic information reading devices are known, comprising a frame, an elastic substrate with frames of insulated conductors glued to it, arranged along two axes of coordinates and forming the coordinate field of the tablet.

However, such plates are not reliable enough, and the installation time of the coordinate field of the tablet is great.

The purpose of the invention is to improve the reliability of the tablet and reduce its installation time.

This goal is achieved by the fact that the tablet contains assemblies of guide conductors made in the form of combs, in the grooves of which are laid frame conductors, mobile and fixed conductor attachment boards located along both coordinate axes, and a conductor tension assembly connected to the mobile boards.

FIG. 1 shows a tablet; in fig. 2 - method of laying the conductors in the grooves of the combs and their fastening.

The tablet contains a shell 1, an elastic insulating substrate 2 with insulated conductors 3 arranged on it, fixed plates 4 of conductor attachment, in

2

which pins 5 are pressed in, movable plates 6 for fastening conductors into which pins 7 are pressed, nodes of guide conductors made in the form of combs 8,

9, in which grooves are laid the conductors of the loop-shaped frames, the node 10 tension conductors. The assembly 10 comprises a spindle 11, guides 12, a spindle nut 13 and brackets 14, which can be slid along

guides 12.

FIG. Figure 2 shows an example of laying and forming separate loop-like frames of an insulated conductor coordinate field. A loop-shaped frame 15 (shaded in the drawing) is formed as follows. The end of the conductor, from which the frame 15 will be formed, is soldered to the pin 5 of the board 4. Then the conductor is laid in the name of the comb 8 opposite to

pin 5, is placed in the opposite groove of the comb 9, is twisted around the pin 7 of the movable plate 6, is laid in another groove of the comb 9, which is two distances from the previous one, and returns

in the groove of the comb 8, which is two splines apart from the previous one, and soldered to the pin 5 of the board 4.

The following frame is mounted in the same way (not shown in the drawing). Installation

starts off by one notch left

the remaining missed groove of the comb 8 and the missed pin 5 of the board 4.

In order to form one loop-like frame, only two soldering of the ends of the frame are carried out directly when laying the conductors into the combs, whereas to form it from two parallel conductors glued to the substrate with the ends cut off on both sides, it is necessary to produce a ration of four: and two boards for mounting a jumper that connects on one side the two ends of the necessary conductors and forms a loop frame.

Thus, in the proposed plate design, the number of rations is reduced three times by eliminating jumpers to form the loops of the frames.

Upon completion of mounting the frames along one coordinate of the coordinate field, the conductors 3 are tightened with the help of a tension assembly of 10 conductors.

When the screw 11 is rotated, the nut 13 goes along the axis of the screw to the right and there is no mobile board 6 behind it, which on the brackets 14 connected to it moves along the rails 12. As a result, the previously weakly and unevenly tensioned conductors 3 are obtained by elongation (elongation copper wire up to 10%) uniform and significant tension.

After tensioning the conductors 3, the elastic substrate 2 is curved by an arc, for example, by using a jacking device so that the conductors adhere closely to the substrate over the entire length, since the highly tensioned and tightly pressed to the surface of the substrate conductors adhere to it and do not move by step in the process of gluing. In this case, the conductors receive an additional slight tension. Arrow bending substrate 2 to 15 mm. Then the conductors 3 are glued to the substrate 2 and completely covered with an adhesive material, the cross section of the conductors to obtain a flat and smooth surface. After the conductors 3 are fixed on the surface of the elastic substrate 2, the bend of the substrate is removed and it relaxes to its original position.

The guide conductor assemblies are removed from the frame 7, first lowering them down until the grooves 3 are completely free from the conductors 3 fixed to the substrate 2 and removed from the frame to the side.

After that, the tension of the conductors 3 is removed from both sides in the sections from the place of fixing on the substrate 2 to shtyry 5 and 7 of boards 4 and 6 in order to protect the conductors from accidental breaks and in case of soldering. This is achieved by moving the board 4 up the slots in the frame and moving the tension plate 6 in the opposite direction. After mounting the coordinate field to one coordinate, the guide conductor assemblies are attached to frame 1 along the other coordinate.

After completion of the installation of the entire coordinate floor, the surface of the elastic substrate 2 is covered with fiberglass, filled with adhesive, creating a smooth and smooth surface, painting it and getting a working surface of the coordinate floor of the planchet.

Subject invention

A plate for a graphic information reader comprising a frame with an elastic electrically insulating substrate with

loop-shaped frames of insulated conductors located on it along both coordinate axes, characterized in that, in order to increase the reliability of the plate, it contains nodes of Jup 1, their conductors, made in the form of combs, in which grooves of frames are laid, conductors located along both axes of coordinates, and a tension unit of conductors connected to one of the conductor attachment plates.

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