SU1240624A1 - Method of manufacturing printing head for electric printing - Google Patents

Description

ten

15

20

I1240624

The invention relates to office equipment and can be used to make writing heads for electrostatic printing.

The aim of the invention is to increase the reliability of the writing head and simplify its manufacture.

Figure 1 shows a device that is more efficiently than that proposed to the method in figure 2 - a section of a round surface with winding; FIG. 3 shows a section of the location area of the pin, FIG. 4-6 shows options for fixing the wires to the pins x. In the manufacture of a writing head, a test piece is used, which consists of the first 1, second 2, third 3 half-molds and elastic cylinder 4.

The half-form 1 is a metal bar. In the body of the bar there are two longitudinal grooves 5, the length of each of which is equal to the length of the writing head. The grooves communicate with the outer surface of the mold half with the help of spruing holes 6.

Hemoform 2 is a hollow metal cylinder 7, in the upper part of which there are two grooves 8, which coincide in configuration with the slots 5 of the semi-half of 1 and 1. On the lateral surfaces of the semi-half. 2, there are grooves 9 (FIG. 2) for laying wires 0. The grooves 9 are made in the form of an N-thread, where N is, for example, eight.

In the lower part of the half-mold there are longitudinal spherical grooves I1, which are the pin placement zones, the latter are installed in the radial holes 12 (Fig. 3). The holes 12 are located along the length of the mold half 2 with a pitch G and the length of the coil winding with a pitch (G, Mold Half 3 is a part of a cylinder having grooves 13 on the inner surface coinciding with the grooves 11 of mold 2, communicating with the rotating surface of the mold half by sprues 14. Polufor Nos. 1 1 and 3 together with Poluform 2 serve as forming elements when casting the compound, the grooves 5 and 8 form the electrodes of the writing gopovka, and the grooves 11 and 13 form pins that can be used as a connector or mounting element.

The rubber cylinder 4 is tightly mounted inside the half-form 2 and is intended for fixing the plugs 15 (figure 4).

cl

that ne he ve sl 4. ne in fi vi is ki ki 15 li va

J. t. we ud

3, According to Po un of

thirty

35

40

45

55

h in n

l l

50 pr 0 lo va ni di shi vi

five

0

The proposed method is implemented as follows.

Pins 15 (Fig. 4) of the first two rows are mounted on the half-form 2 in the holes 12 so that they protrude above the surface of the grooves 11 on the one hand, and on the other side they are slightly clamped by the elastic cylinder 4. Then, on the half-form 2, the coils of the first approach the threads wind the wire 10, fixing it on the pins x 15. Fixing the wire 10 can be accomplished by winding it onto pin 15 (FIG. 4) with the formation of an internal loop when using a hollow pin 15 (FIG. 5) or pinching the wire 10 in the slot of the head pin 15 (6). The points of connection of the wire 10 and pins. 15 are soldered, after which the excess wire sections between the pins are removed and the first two rows of pins are inserted.

Then wind the second, third and,. etc. up to N wires, fixing each turn on the corresponding pins x 15, removing excess areas and inserting the pins in the cylinder 4 upon completion of the winding of the corresponding wire 10.

After the filling of N, the wires on the half-form 2 installs the half-molds 1 and 3, pour the compound into the slots 5 and 8 through the gate gates 6. After the compound hardens, turn the device over and pour the compound into the grooves 11 and 13 interrupter holes 14.

0

five

Then the molds disassemble and cut the winding between the grooves 8. To avoid sticking of the compound to the surfaces of the grooves 5, 8, 11 and 13, they are coated with anti-adhesive lubricant before winding.

The application of this method allows the use of wire from a whole skein and small pieces of wire when winding.

During winding, a wire break (which diameter is not more than 0.08 mm) 5 is possible, which breaks the winding as a whole or necessitates splicing the ends of the wires. In the first case, this requires re-winding, in the second case, it is necessary to unwind the coil so that the place falls into the non-working winding area and solder the wires.

which is quite laborious. When using the proposed method, it suffices to remove the broken wire 12406244

one of the N, where N 8,16,32,64, etc., and perform a single winding of the wire again.

13

R

12

13

eleven

Iff

Phi.1

FIG. 2

Cjjvp

I g 3 jf i f j

eleven

 I t

FIG. four)

put f

 Compiled by A. Pisemsky Editor. Shvyshka Tehred I. Popovich Proofreader L. Patay

Order 3441/13 Circulation 362Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, Projecto st., 4

fuv.

Claims (1)

METHOD FOR PRODUCING A WRITING HEAD FOR ELECTROSTATIC PRINTING, including the operations of winding the wire with a given step onto a mandrel having longitudinal grooves on its outer surface, filling the longitudinal grooves of the mandrel with a compound and cutting wire turns between the longitudinal grooves and forming wire cuts and additional cuts mounting element for forming conclusions, removing the product from the mandrel, characterized in that, in order to increase the reliability of the writing head and simplified I’m making it, when winding the wire, they use a cylindrical mandrel with additional longitudinal grooves and radial holes communicating with them and arranged in rows, in which pins are placed before winding the wire, while forming the leads, the wire is fixed on the mounting element in the process of winding the wire onto the mandrel by fixing on the pins, recessing the pins in the radial holes of the mandrel and filling g with the compound of the additional longitudinal grooves of the mandrel, and additional cutting of the turns rovoloki performed between the additional longitudinal grooves, wherein the potting main longitudinal grooves of the mandrel is performed after embedding the pins. SU „1240624