DE1270593B - Printing unit for data recording, in which the printing element consists of a ring of type levers arranged radially to the axis of rotation - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

GERMAN

PATENT OFFICE

EDITORIAL

Int. CL:

H 041

German KL: 21 al -11/03

Number:
File number:
Registration date:
Display day:

1270 593
P 12 70 593.0-31
April 7, 1966
June 20, 1968

The invention relates to a printing unit for serial data recording, in which the printing element consists of a wreath arranged radially to the axis of rotation type lever, which is selected individually for Stop against a printing pad, preferably a cylindrical body with a horizontal or vertical position arranged axis.

Printing units of this type are known per se, as can be seen in German patent specification 423 548, for example leaves.

The disadvantage of these known designs, however, is that the achievable printing speed is relative is low, as the type lever ring must first be brought to a standstill before each imprint.

This disadvantage is also associated with printing devices which, according to the German patent specification 632 323 and the Austrian patent specification 134 854 are formed. Here they stand in a wreath arranged type lever in the rest position approximately parallel to the axis of rotation from which it is in the printing position by an outward pivoting movement to the stop against a Printing material can be brought.

This arrangement allows the moment of inertia reduce the moving masses somewhat, but this does not result in any significant shortening of the printing cycle is achieved, since the type carrier must also be shut down before each imprint, to get a clean impression.

This disadvantage is circumvented by the present invention by making an imprint the movement out is made possible, in which, however, not that of the so-called flying print known problem of the high relative movement between type and recording medium occurs. This is achieved according to the invention by the type lever ring at constant speed rotates and the axis of rotation of the type lever ring is arranged in relation to the printing material is that the extended axis center line intersects with the vertical on the imprint and that this point of intersection lies in or approximately in the plane of the impression.

This means that the imprint takes place on the axis center line where the winding change is made The posted type is practically not inscribed against the recording medium for the time of the imprint Weight drops so that a clean print is ensured.

On the basis of an exemplary embodiment, the invention in conjunction with the drawings is intended to be in greater detail explained.

Printing unit for data recording, in which the printing element consists of a ring radially to the axis of rotation arranged type lever exists

Applicant:

Standard Elektrik Lorenz Aktiengesellschaft,
7000 Stuttgart-Zuffenhausen,
Hellmuth-Hirth-Str. 42

Named as inventor:

Folker Galaske,

Manfred Fleischer, 7530 Pforzheim

F i g. 1 shows, in simplified form, the printing unit according to the invention in partially sectioned

ao posed side view;

. Fig. 2 shows the object of FIG. 1 in one Top view, in which the level of the type lever is only partially used to identify the cam tracks is shown;

Fig. 3 shows the execution of the optionally controllable Orbits of the cam follower elements assigned to the type levers. _

As the F i g. 1 shows, the individual type levers 5 are mounted in radially arranged incisions in an annular type lever bearing 3 in the form of a ring. Allen type levers 5 is common to the α on a ring bracket 6 resting type lever bearing 6 and a dome-type lever guide 7] Führungsschlitzen7ß. This guide is used in the present. To make the Coriolis force occurring at right angles to the stop movement of the type lever largely ineffective. The console 6 α and the guide 7 are guided centrally through the upper part of the bearing 3, and are supported on a ring shoulder 3 α . A clamping device, not shown, prevents the parts 6 and 7 from slipping or shifting on their own. Each type lever 5 is assigned a transmission lever 8 which is positively engaged with one another via a toothing. Each of these transmission levers 8 is provided at its other end with a slider 8 α boat-like cross section. This from the circumference of the type lever bearing 3 radially protruding sliders are used in the manner described in more detail below to the. Type lever selected via a stationary control part 12 in connection with stationary cam tracks 9 and 10

809 560/339

to bring to the stop and return to the starting position. The type lever bearing 3 itself is rigidly connected to a vertical axis of rotation 4. According to the invention, this axis is subjected to a continuous drive and its arrangement according to the present embodiment is chosen so that the extension of the axis center line y coincides with the tangent going through the print center P to the circumference of the printing roller 1 or the paper web 2 looping around it. This measure makes it possible to achieve a clean impression from the movement, since with the merging of the pivot point and the impression point, the angle change of the type 5 α in the stop position, which results from the continuously rotating type lever ring 13, has practically no effect for the time of the impression exerts on the typeface.

The types to be imprinted are selected by means of a control part 12 in which the associated slide 8a is deflected from the idle orbit shown in dash-dotted lines via a mechanical or electrical switch, not described in detail, according to FIG. 3. As a result, the respective slider 8 α reaches the incline of the stop curve 9, whereby the associated type lever according to FIG. 1 is brought into the stop position. After the impression made at point P , the sliding piece 8 α reaches the area of the return curve 10 due to the continuous rotation of the type lever ring and is thus forcibly returned to the starting position.

F i g. 2 shows the position of the two curves 9 and 10 as well as the control part 12 in relation to the printer roller 1 and the print point P. The curves 9 and 10, which are attached to the stationary cam bearings 11 in relation to the type lever ring 13 rotating in the direction of the arrow, are within limits for the precise determination of the print time adjustable. The stop curve 9 has an almost constant slope over its entire length, so that very favorable acceleration values occur. Also, due to the effective centrifugal forces, any type lever suspension can be dispensed with if the center of gravity of the type lever 5 and the transmission lever 8 is selected so that the type lever is held against the type lever support 6 with sufficient force during the period of rotation. In the normal case, an inevitable guidance of the sliders 8 α is also unnecessary, since the moment of inertia that occurs during the push-off and return movement ensures reliable cornering.

As a color carrier, a color ribbon or in utilization of the rotation of the can in a customary manner Type lever ring 13 a per se also known paint roller, which the types in the run colored, provided.

Due to the ring-shaped arrangement of the type lever, compared to conventional type lever machines a much larger number of type levers can be accommodated, so that even with When there is a large need for digits and characters, no double assignment of the type lever is required and so that the hitherto usual switching from one group of characters to the other is superfluous.

In addition to the illustrated printing roller 1, a z. B. with strip recorders Usual pressure wheel with a vertical axis of rotation or a pressure rail with a flat surface is used will. These are then analogous to what is prescribed in relation to the center line of the axis of rotation 4 arranged.

It is also used to shorten the type lever lengths and to reduce the swivel angle of the type lever and the possible increase in the operating frequency is conceivable, the type lever ring 13 opposite the axis 4, which is still perpendicular, is inclined towards the impression point Able to give that by fixed guide means is determined. In this case, the type lever bearing 3 is via a cardan-type intermediate link positively connected to the axis of rotation 4.

Claims (7)

Patent claims: 1. Printing unit for serial data recording, in which the printing element consists of a wreath There is type lever arranged radially to the axis of rotation, which are individually selected for the stop against a printing pad, preferably a cylindrical body with horizontal or vertical arranged axis are brought, characterized in that the type lever wreath (13) rotates at constant speed and that the axis of rotation (4) of the type lever ring is arranged with respect to the printing pad in such a way that the extended axis center Mnie (y) is aligned with the vertical on the Imprint site cuts and. that this intersection point in or approximately in the imprint plane lies. 2. Printing unit according to claim 1, characterized in that the type lever ring (13) below the printing surface, preferably type roller (1) horizontally around the perpendicular stationary axis (4) rotates. 3. Printing unit according spoke 1 and 2, characterized in that the type lever ring (13) with respect to the vertical axis (4) a position inclined at an angle to the impression point occupies, which is determined by fixed guide means and that the type lever ring (13) is positively connected to the axis (4) via an articulated intermediate member. 4. Printing unit according to claim 1, characterized in that each type lever (5) is in positive engagement with a transfer lever (8) which is provided at its other end with a slider (Sd) boat-shaped cross-section that in the area of the orbit of these sliders ( 8 et) stationary cam tracks (9, 10) are arranged, via which the selected type levers (5) are brought to the stop (curve 9) and returned to the starting position (curve 10). 5. Printing unit according spoke 1 and 4 ₍ characterized in that the sliders (8 a) in the starting position describe a circular path unaffected by the cam tracks (9, 10), from which they in the area of a control part (12) via a mechanical or electrical Soft can be deflected into a path leading over the curves (9, 10). 6. Printing unit according spoke 1, characterized in that the type lever (5) above their pivot point in slots (7 a) of a cage-like dome (7). 7. Printing unit according to the preceding claims, characterized in that the The center of gravity of the type lever (5) and the transmission lever (8) in the rest position has been selected in this way is that the type lever by the centrifugal forces taking effect during the rotation be held with sufficient pressure in the opposite position against the type lever support (6). Considered publications: German Patent Specifications Nos. 423 548, 632323; Austrian patent specification No. 134 854. 1 sheet of drawings