SU1354228A1 - Mosaic printing head - Google Patents

Abstract

The invention relates to telegraphy, automation and computer technology and can be used in high-speed printing machines. The purpose of the invention is to reduce the energy consumption of the mosaic print head when operating at frequencies greater than 100 Hz. The goal is achieved by the fact that in a mosaic print head containing a hollow cylindrical body 1 made of magnet material, solenoid electromagnets 2 installed in the body through separation spacers 3, one row of punches 4 connected to the core 5, and 8 for the punches 4, on the outer cylindrical surface of the core 5 and the magnetic conductor of the solenoid 2 there are made grooves 14, located along the axis of the core 5 and forming in the longitudinal axial direction of the solenoid 2 angular, and in the volume of the core and magnetic conductor upy 15 mutual attraction. Sequential switching on of the traction units in the process of moving the core 5 with the punch 4 reduces the energy consumption when printing at frequencies over 100 Hz, and the use of a conical helical spring 18 with a non-linear characteristic makes it possible to reliably and quickly detach the punches 4 from the red tape 21 and carrier 22 information; after stopping the supply of current to the winding of the solenoid 2. 2 Il. (L V V, 20

Description

The invention relates to telegraphy, automation, and computer technology and can be used in high-speed printing apparatus.

The purpose of the invention is to reduce the energy consumed by the mosaic print head when operating at frequencies greater than 100 Hz.

FIG. 1 shows a mosaic print head, a longitudinal section; in fig. 2 - solenoid type electromagnet with interaction force vectors.

The mosaic print head contains a hollow cylindrical body 1 of magnetically soft material, solenoid type electromagnets 2 installed in body 1 through separation spacers 3, one row of punches 4 connected to the core 5, with cortex 5 and separation spacers nonmagnetic 3, axial bores 6 and 7 are made, respectively, for punches 4, and a die 8 for punches 4, on the outer cylindrical surface of the core 5 and the magnetic circuit formed by the cheeks 9 and 10, the groove holder 11 and the housing part 1, coils 12 with an obm With drips 13, grooves 14 are made, located along the axis of the core 5 and forming in the longitudinal axial direction of the solenoid 2 angular, and in the volume of the core 5 and the magnetic core there are annular projections 15 of mutual attraction. The cheeks 9 and 10, the groove holder 11 and the rolls 12 are fastened between it, and the protrusions of the coils 12 fit into the slot 16 of the housing 1 and are thus fixed relative to the latter in angle. The armature 5 has guides 17 in the magnetic core and through holes 6 for orienting and securing the punches 4, and returning the core 5 to the initial position is carried out by a conical helical spring 18, which abuts against the spring damping washer 19 mounted on the bark 5. Nut 20 serves for holding the matrix 8 and the solenoids 2. The printing is carried out through the ink ribbon 21 on the information carrier 22,

The outer groove 14 on the bark 5 forms magnetomotive protrusions A and B interacting with the protrusions

C, D and D parts x 10 and 11 of the magnetic circuit.

Mosaic printing head (as follows).

To imprint the points of the vertical column or horizontal line (depending on the orientation of the head) onto selected windings 13, control current pulses are delivered. The arising electromagnetic fields are closed through pairs of traction units in the form of annular projections, with projection A interacting with projection B, projection B with projection D, and projection A interacting also with projection D.

As a result of the magnetic mutual interference of the nodes, the core 5 moves with the punch 4.

The punches 4 are moved until the dots are fully printed through the ink ribbon 21 on the information carrier 22. In the process of moving, the return springs 18 are compressed, which, after imprinting the required points, bring the koreas and punches back to their original position. After the first cycle of printing on paper, the imprint of points of one or several columns remains (depending on the design of the head with a single or double matrix).

Similarly, the points of the subsequent columns and the entire symbol are printed after the corresponding movements of the information carrier or the head itself. The vectorial picture of the acting forces F,, F,;, Fj in the first three phases of the four-phase cyclogram of the dot printing is given in FIG. 2 for the initial position of the box. The axial components Fg, Fg, Fg of these vectors inclined at an angle about relative to the motion of the core participate in the electromagnetic movement of the core 5.

When you turn on the current in the winding 13

50

print cycle is executed

in the following sequence.

I phase - starting, in the absence of a gap between the first pulling pair of protrusions (a-B), is made when the projection A moves from the initial position of the core 5 to the position corresponding to the value of Ce 0;

Phase II - motion pickup, performed from the position when the projection B

reaches the projection G, i.e. when the protrusion A moves from the position corresponding to the value S, 0 to the position corresponding to the displacement of the core by an amount of 2 dB from the initial position;

Phase III - movement forcing, performed from the position where the protrusion B will pass along the protrusion D by the magnitude b, i.e. performed when the protrusion A is moved to the jerk D from the position corresponding to the value of the gap b, equal to (J -), to the position of the protrusion A, when

b C (to the point print position);

Phase IV - return, for example mechanical, core 5 with a punch 4 to its original position (Fig. 2).

The proposed mosaic printing head provides active conversion of the energy of the magnetic flux into the energy of movement of the core 5 at the initial time of arrival of the current pulse to the winding 13, when in known mosaic print heads with a single complete gap, the measles are in the position of the distance and the difference of magnetic potentials on such a gap is still does not increase to a high threshold.

Thus, phases I, II and III of the cyclogram of the proposed solution reduce the total time of movement of the core to the information carrier, reduce the threshold value of the magnetic potential at which the kinematic moving of the core with the punch occurs.

Consider the quantitative and temporal parameters of the distribution of active forces during the operation of the known and proposed heads.

In the present invention, a more reliable and faster return of the core with a punch from the printing position to the initial position takes place after the current supply to the coil of the solenoid is stopped due to the use of a conical helical spring with a non linear linear characteristic, where the opposing spring force is low while the Fg force on the core at the initial moment of applying the current. At the same time, the counteracting force does not directly increase proportionally when the force on the cortex increases sharply in inverse proportion to the square of ayuschego gap be- tween armature and its emphasis that d, flushes reliable and fast break spring plunger from the ink ribbon and the information carrier.

five

Sequential connection of the traction units in the process of moving the core 5 with the punch 4 makes it possible to reduce the energy consumed when printing at frequencies of more than 100 Hz, and the use of a conical screw

P

springs 18 with a non-linear characteristic — to make a reliable and fast tear-off of the punch pads from the dye tape and information carrier after the current supply to the coil of the solenoid 2 is stopped.

Claims (1)

Invention Formula A mosaic printing head containing a hollow cylindrical body of magnetically soft material, solenoid type electromagnets, installed in the body through dividing gaskets, one row of punches connected to the cores, while axial bore holes are made in the cores and dividing gaskets punches, and the matrix for punches, fixed in the housing, is necessary so that, in order to reduce the energy consumed when operating at frequencies above 100 Hz, on the outer cylindrical surface, core and magnetic conductor olenoida grooves along the axis of the armature and forming a longitudinally axial direction of the solenoid angle, and within the scope of the armature and the magnetic core - annular projections mutual attraction. five five 17 G 17 V Editor N. Tupitsa Compiled by A. Osipova Tehred L, Oliynyk Proofreader M.Sharoshi Order 5696/45 Circulation 671. Subscription VNIIPI. USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, st. Project, 4