SU1234229A1 - Writing instrument of automatic drawing machine - Google Patents

Description

The invention relates to writing, primarily to writing instruments used in automatic recording, drawing, and the like. machines.

The purpose of the invention is to increase reliability in operation.

FIG. 1 shows a writing instrument, a slit; in fig. 2 is a section A-A in FIG. one; in fig. 3 is a section BB in FIG. one.

The writing device provides for a dye tank 1, a transition tube 2 connected to the tank 1, and, in addition to the central hole having longitudinal petal-shaped Channels 3, the tubular tip 4 connected to one side with threaded connections. the transition tube 2, and on the other - the recording tube 6, and having rib-shaped protrusions 7 and longitudinal channels 8 inside the central channel, a weight 9 made of a soft material magnet, freely, due to the difference in diameters installed in the central th channel of the tubular nozzle 4 and having disposed in the writing tube fastened to it a cleaning needle 10, the electromagnetic device having an excitation coil formed as a coil inductor 11, and the adapter 12 for attachment to a movable mechanism. In this case, the inductor 11 has a cylindrical body 13 and is connected to a tubular tip. 4 by means of rib-shaped protrusions 7 so that it is located concentrically to the sinker 9 and has the possibility of electromagnetic interaction with it. The cylindrical body 13 is made of a magnet of a soft material and has connecting maple No. 1 14 coils 11 of inductance located in the side through-hole of the holder t2.

The job of the writing device of the automatic drawing machine is that, in the presence of a signal to lower, a pulse of electric current is fed to the inductor 11. The electric current creates an electromagnetic field between the inductor 11 and its cylindrical body 13, as a result of which the weight 9 draws up to the stop into the transition tube 2, opening the passage to the dye in the writing tube through the lobe-shaped channels 3 and channels 8 of the tubular tip 4 6 and further to the surface of the letter. When this happens, the writing liquid film is destroyed due to its drying with a cleaning needle 10, as well as the destruction of air bubbles in the writing tube 6: formed when the container 1 is filled with dye and further moving into the writing tube 6 When the electric current pulse terminates the electromagnetic field disappears, the weight 9 moves down to the stop into the tubular tip 4, forming a cleaning needle 10 a drop of dye at the end of the writing tube 6. The drop size depends on the diameter of the opening of the writing tube and 6 and the number of pulses of electric current. When a cleaning needle / S comes in contact with the surface of the letter at the same time, an electric current is applied to the inductance coil 11, which is accompanied with the formation of a drop. The frequency of the supply of pulses of electric current is chosen commensurate with the change in the speed of movement of the writing device, which allows for the weight unloading of the needle 10 and to adjust the output of the dye. To fill the container 1 with the dye, it is removed from the transition tube 2.

FIG. 3

Editor I. Segl Nick

Compiled by M. Kovalenko Tehred L. Oleinik Korrektor M. Taksi Ishynets

Order 2944/21

Circulation 345 Subscription

VNIIPI USSR State Committee

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

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

Claims (1)

AUTOMATIC DRAWING MACHINE WRITING DEVICE, comprising a tubular tip, the central channel of which is connected on one side with a transfer tube to the dye supply means, and on the other hand with a writing tube, a weight installed freely in the tip channel and having a cleaning needle located in the channel of the writing tube, and an electromagnetic device, the field winding of which is connected to the tip concentrically to a small weight with the possibility of electromagnetic interaction with it, characterized in that, for the purpose of increase reliability in operation, the field winding is installed in the tip channel and connected to it by means of rib-shaped protrusions made in the tip channel, the adapter tube is mounted on the tip and connected with a detachable connection, and its channel additionally has longitudinal petal-like channels for the passage of dye between the tip and the winding to the writing tube. SU „1234229