RU1778015C - Printing mechanism of point-matrix printer - Google Patents

Abstract

The invention relates to printing devices and allows to increase reliability, print quality and reduce energy consumption. In the guide, consisting of two parallel planes, there is an elastic plate with printing elements, the ends of which are placed in grooves made in the guide. The elastic plate moves back and forth, and the blocks of hammers act on the printing elements. 9 ill.

Description

The invention relates to printing devices for outputting information.

The aim of the invention is to increase reliability, print quality and reduce energy consumption,

Figure 1 shows the printing mechanism, a General view; figure 2 is a section aa in figure 1; in Fig.Z - section bB in Fig.2; Fig. 4 is a guide; figure 5 is a section bb in figure 4; figure 6 - elastic plate; in Fig.7 is a section GG in Fig.6; on Fig - node I in Fig.6, (petals of an elastic plate); Fig.9 is a section DD in Fig.Z.

The printing mechanism consists of a paper-pore surface 1 mounted on the walls 2. A paper tape 3 is fixed on the paper-supporting surface, which is able to move discretely translationally.

A guide 5 is mounted on the walls 4 with the hammer blocks 6 fixed on it; an elastic plate 7 is mounted on the guide 5, which can be moved back and forth by means of a stepping motor 8

or other drive. Between the paper tape 3 and the guide 5, a dyeing tape 9 is placed.

The guide 5 consists of two walls 10 and 11 having parallel grooves 12 and 13, symmetrical about the common plane of symmetry and two stops 14. On the wall 11 there are threaded holes 15 and 16 for fastening to the walls 4 and fastening the blocks 6,

The plate 7 is made of thin elastic material (for example, from a tape 0.1 mm thick), in which the petals 17 are cut and shaped grooves 18 are formed to increase the rigidity of the part and limit its position in the guide 5. Printing elements 19 are fixed to the petals 17, protruding on both sides of the tab, and on the side facing the paper support surface 1, the protruding parts of the printing elements 19 are arranged in three parallel rows (can be located in the front), and on the opposite side facing the blocks 6, protruding its parts are located on both sides of the axis in three

cl

with

Xi

vj 00 about

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row (or rows), with each printing element of the next row located on one axis perpendicular to the printing line with the printing element of the previous row. The elastic plate 7 is installed in the guide 5 so that the protruding parts of the printing elements facing the paper-porous surface enter into the grooves 12 of the guide 5, and the protruding parts of the printing elements facing the blocks 6 are located opposite the grooves 13 or can enter in them.

Blocks of magnetoelectric systems with hammers consist of permanent magnets 20 with pole tips 21 and 22. The ends of hammers 23 located in a row, the free end of which has shock strips 24 located at different levels, are fixed on the pole tip 21. The free ends of the hammers 23 are attracted by a magnetic flux of a permanent magnet 20 to the ends of the cores 25 with coils 26 fixed in a row on the pole piece 22. The blocks b are fixed to the guide wall 11 by means of bushings 27 so. so that the hammer strips contact the protruding parts of the printing elements located on both sides of the row axis.

The plate 7 in the lower part is rigidly fastened to a bar 28 having, for example, gear engagement with the gear of the stepper motor 8. moreover, the kinematic closure can be any, depending on the selected drive trailer.

The mechanism works as follows.

When the electric motor 8 is turned on, the plate 7 begins to move in the guide 5 reciprocatingly, and its movement is equal to or slightly larger than the width of the printed familiarity with one printing element. When the plate 7 moves the element 19 to a certain position from the control device, a signal is supplied to the inductor 26, which excites in the core a magnetic flux opposite in direction to the magnetic flux of the permanent magnet 20 and neutralizes it.

The end of the hammer 23, freed from the action of the magnet 20, which attracts it to the core 25, rushes forward under the action of elastic forces and, being in contact with the protruding part of the printing elements 19, strikes the opposite protruding part through the ink ribbon 9 on a paper tape 3.

At the end of the signal, the end

the malleus 23 is magnetically attracted by the permanent magnet 20 to the core 25, and the protruding part of the printing element 19 is returned to its original position under the action of the elastic forces of the petals

17, after which the plate 7 takes a new positional position and the process is repeated. Hammers work with high speed, striking through printing elements that are protruding

on both sides of the axis slides in parts at the ends of the striking plates. The location of adjacent overlapping strips allows you to seal microstrings of adjacent familiarity without intervals with

established step between points in familiarity.

Claims (1)

SUMMARY OF THE INVENTION Dot-matrix printing mechanism a printing device comprising a paper-supported surface with a mechanism for moving paper, hammer blocks installed in the housing, parallel rows of printing elements arranged at the same pitch, a drive for reciprocating movement of the printing elements parallel to the printing line, characterized in that, for the purpose of improve reliability, print quality and reducing energy consumption, it is equipped with a guide installed in the form of two parallel planes between the paper support surface and the blocks of the printing hammers and placed between them with the possibility of reciprocating movement of the elastic plate with petals made on it having stiffeners, the printing elements are fixed to the elastic plate so that with the sides of the arrangement of the print hammer blocks form protrusions arranged alternately on both sides of the axis. passing through the centers of the printing elements, and interacting with the protrusion by us of the printing elements, the parts of the hammers are located in two rows on both sides of the plane passing through the centers of the printing elements with overlapping adjacent adjacent parts of the hammers in the direction of the print line, and grooves are made in each of the guide plates to accommodate the printing elements and their protrusions. I / 9 4 ft -I A - A J U 1 9 Hi Figure 2 -7 L 3 6 5 FIG. 5  l It5 2.5 22 20 23  21  rotated 27 22 2i + 28 Fig.Z AT 1 13 12 i i  Ј. / 7 H FIG. 4 N R FIG. 6 B-b 1k fifteen b b b / Thebes, 5 I g-g -} ( -Y i 7 and JLJ. thirteen thirteen FIG. 8 FIG. 9