SU741292A1 - Mosaic printing head - Google Patents

Description

The invention relates to automation devices, computer technology, telegraphy and can be used in devices for recording information. A known printhead containing printing elements — punches arranged in a mosaic order in a guide array, and driven by electromagnets with a spring-loaded bar 1. The disadvantage of such a design is its cumbersomeness due to the arrangement of a plurality of electromagnets. Also known is a printhead containing electromagnets with spring-loaded crusts for driving printing punches and a guide array 2. The device has curved punches, which impedes the transfer of significant fast-varying forces. The conditions for placing electromagnets do not allow the use of electromagnets of desired power and speed. The work of such a printhead is unreliable, and the service life is not great. The aim of the invention is to increase the speed and reliability of the print head. The goal is achieved by the fact that the measles of electromagnets are made in the form of flat levers of the first row, having working lengths of the same length, connected to printing punches, and installed with a package on a common swing axis, the printing punches being made straight and parallel to each other, and The electromagnets are mounted on a circumference around the axis of swing of the levers. FIG. Figure 1 shows a printhead with bark in the form of permanent magnets mounted on the opposite arms of levers with opposite polarity of the poles of the magnets on the opposite ends of the levers ;, FIG. 2 - a printing head with permanent magnets, which are tangentially mounted on the ends of the races of Korea; in fig. 3 - a printing head with bark, each of which is made in the form of a lever with teeth on the end, made of a magnet of a soft material.

The print head consists of controllable electromagnets 1, mounted on body 2, flat, multi-shoulders (at least two shoulders) levers 3, mounted on a common swing axis 4 into a bag. The shoulders 5 levers are working and connected to the printing punches b located in the matrix 7, the punches are parallel to each other and spring loaded by springs 8. The length of the working arms (a) is the same in all the levers. The remaining arms of the levers are driven and are measles electromagnets. These shoulders are turned relative to the working shoulders in different levers at different angles. This provides the convenience of the location of a large number of electromagnets of considerable power (with large dimensions) in a compact design. Electromagnets are mounted on the housing 2 circumferentially around the axis 4 with the help of set screws 9.

FIG. 1 Measles are made in the form of permanent magnets 10 and 11 mounted on the ends of the oppositely directed arms of the respective levers. The ends of the magnets are the poles of opposite polarity. With de-energized electromagnetic coils, these ends are tangentially adapted from the cores of the respective electromagnets 1.

During operation, when a voltage pulse is applied to a corresponding pair of coils, the permanent magnets are attracted to the cores of the electromagnets, and the lever is rotated, providing the working stroke of the corresponding punch.

FIG. 2, the lever has at least one permanent magnet 13 mounted tangentially. In the idle state, the core of the corresponding electromagnet is set offset from the center of the permanent magnet. When a voltage pulse is applied to a coil, the permanent magnet tends to occupy a middle position relative to the core of the electromagnet and pushes the corresponding punch.

In the construction according to FIG. 3 no permanent magnets. The drive arms of the levers are made of. The magnet of the soft material and together with the axis and the body constitute the magnetic conductor. The ends of the shoulders are made in the form of teeth 14 They correspond to the teeth of 15 cores of electromagnets. In the idle state, the teeth of the arms and cores have a tangential displacement on

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This construction works as follows. When applying a pulse in.

The coil of the electromagnet induces a magnetic flux in the lever 3 of the EMF, which excites a particularly strong magnetic field on the teeth. As a result of the interaction of two strong magnetic fields, a torque occurs in the corresponding lever. It rotates at angle cL and makes a working stroke of the punch.

This printhead allows punches to operate at speeds of more than 2000 Hz. When using a 1x9 matrix printing speed will be about 300 characters per second.

Claims (4)

1. A mosaic printhead containing electromagnets with spring-loaded bark for driving printing punches and a directing matrix of punches, characterized in that, in order to improve speed and reliability, the measles of electromagnets are made in the form of flat levers of the first kind, having the same the length of the working shoulders connected to the printing punches and installed by the package on a common swing axis, the printing punches are made straight and installed parallel to each other, and the electromagnets are installed along Kru :: Nost around the axis of swinging arms. 2. The head of claim 1, distinguishing a. so that each measles has at least two permanent magnets mounted on the opposite arms of the lever, and the end surfaces of the magnets are located on a cylindrical surface around the axis of swing of the levers with a radial clearance relative to the radially installed cores of the electromagnets. 3. The head according to claim 1, wherein the measles has a permanent magnet tangentially mounted on the lever arm, and the core of the corresponding electromagnet is located between the poles of the permanent magnet core. 4. The head according to claim 1, characterized in that the measles is made of a magnetically soft material with toothed poles, and the cores of the electromagnets have corresponding toothed poles. Sources of information taken into account in the examination 1. US patent number 3190957, cl. 178-30, published. 1965. 2.Patent of England No. 1337516, cl. In 6 F, pub. 1973 (prototype).