JPS62212199A - Automatic drawing machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to an automatic drawing machine.

[Prior art]

Paper 1 is sandwiched between a driving roller that rotates in forward and reverse directions and a pinch roller, and the paper is moved in the X direction, and the writing instrument is inserted into the paper.

An automatic drafting machine has been proposed that can draw by moving the paper in two directions: the Y direction, which is parallel to the drawing surface of the paper and perpendicular to the X direction, and the other direction, which is perpendicular to the drawing surface of the paper.

Such an automatic drawing machine is equipped with a cartridge that accommodates a plurality of writing instruments in order to draw lines 5 of different colors and thicknesses,
Draw while automatically changing writing instruments. For this reason, the passage for the writing instrument is set at a position away from the drive roller so that the writing instrument does not hit the pinch roller when replacing the writing instrument.

Further, as writing instruments, hollow pens, ballpoint pens, pencils, etc. are used. For example, in the case of a ballpoint pen, the writing pressure is 60gr:f, and in the case of a pencil, the writing pressure is 20gr:f.
It is set to about 0 to 600 gzf.

[Problem that the invention seeks to solve]

An automatic drafting machine like the one described above is used to print the paper in the X direction.

When drawing a line, there are two cases in which the line is drawn while the paper being moved by a drive roller and a pinch roller is pulled out from under the writing instrument, and another in which it is pushed under the writing instrument.

A case occurs where a line is drawn. From under the writing utensil.

When the paper is being pulled out, there is a tension on the paper, so problems rarely occur, but when drawing a line while the paper is being fed under the writing instrument, the The feeding force is only transmitted by the rigidity of the sheet itself.

Therefore, when drawing with a large pressure such as with a pencil, if the rigidity of the paper is low, the paper cannot be pushed under the pencil and the paper jams, making it impossible to draw. Also, X
Drawing lines with all directional lines pulled out from under the writing instrument not only reduces the operating rate of the automatic drafting machine, but also accelerates damage to the automatic drafting machine's structure, such as wear on the feeding system. There are problems such as:

SUMMARY OF THE INVENTION In view of the above-mentioned problems, it is an object of the present invention to provide an automatic drawing machine that can draw efficiently and in good condition even if the rigidity of paper is small.

[Means for solving problems]

The structure of the present invention for achieving the above object will be explained using FIGS. 1 to 3 corresponding to embodiments. The present invention moves the writing instrument 30 in two directions! The center of the magnetic coil 22 is aligned with the axis of a guide shaft 18 that guides the body 19 in the Z direction, and the body 19 is slidably and rotatably supported on the guide shaft. A holder 29 is provided in the body 19 to hold a writing instrument 30. The body 19 is pulled up by a spring 27 and rotated so as to come into contact with the stopper 28 , thereby positioning the writing instrument 30 so that the tip thereof faces the top of the drive row 21 . Pinch/'-1 [Function] The present invention has an upper S-pin configuration, so that the writing instrument 30 is always at the top of the drive roller 1 during drawing, so the position where the feeder force on the paper 3 changes from tension to compression. The paper 3 can be drawn efficiently with very little slack in the paper 3 and in good condition.

Furthermore, when moving to replace the writing instrument 30, the writing instrument 3o moves along the guide plate 32.

, the body 19 rotates around the guide shaft and the marking tool 3
Since the movement of 0 is measured, the writing instrument 3o and the pinch roller 8
Prevents collisions and automatically replaces writing instruments.

can be made possible.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 to 3.

In the figure, 1 is a drive roller, and 2 is a paper guide arranged on both sides of the drive roller l. 3 is paper fed onto the drive roller 1 and paper guide 2;

4 is a frame arranged parallel to the drive roller 1;

5 is a hinge fixed to the lower end of the frame 4; 6 is a lever rotatably supported by the hinge 5; 7 is a shaft fixed to one end of the lever 6; 8 is a pinch roller rotatably supported by the shaft 7; 9 is a pin installed on frame 4. lO is a spring hung between lever 6 and pin 9. 11 is frame 4
Support that can be rotated.

The shaft is rotated by a driving means (not shown).

12 is 11! Cam fixed on Ill. By rotating cam 11 and swinging lever 6, the pin is turned.

The pinch roller 8 comes into contact with the paper 3 and separates from it. The pressing force of the pinch roller 8 is provided by a spring 10. 13 is a guide attached to the frame 4. Reference numeral 14 denotes a carriage that rotatably supports rollers 15 in contact with the guide 13 and the frame 4. A belt or wire (not shown) is connected to the carriage 14, and the carriage 14 moves along the guide 13 when a driving source (not shown) operates.

16 is a pen head supported by the carriage 14;

17 is a frame fixed to the carriage 14; 18 is a guide shaft supported by the frame 17; 19 is a body slidably and rotatably supported by the guide shaft 18 via a bearing 20; Reference numeral 21 denotes a bobbin fixed to the upper end of the body 19 so that its fineness matches that of the guide shaft 18. 22 is Bobi/
An electromagnetic coil wound around 21. 23 is a magnet into which the pobbin 21 forming the electromagnetic coil 22 is rotatably and slidably fitted.

24 is a holder fixed to the carriage 14 and holds the magnet 23; 25 is a bottle erected on the carriage; 26 is a bottle installed upright on the body 19. 27 is bottle 25 and bottle 26
A spring suspended in the darkness. 28 is a shaft rotatably supported by the frame 17.

The spring 27 pulls up the body 19 away from the paper 3, applies rotational force to the body 19 so that the body 19 comes into contact with the stop horn <28, and the body 19 descends. 29 is a holder fixed to the body 19, 30
A writing instrument 30 , which is a writing instrument held in the holder 29 , is held so that its tip faces the top of the drive roller 1 . 31 is a cassette that holds multiple writing instruments. A guide plate 32 is fixed to the lever 6 that supports the pinch roller 8 so as to cover the pinch roller 8 above the pinch roller 8.

The brush is held in the holder 29 with such a configuration.

The tip of the marking tool 30 is connected to the top of the drive roller 1.

facing. When drawing a line in the X direction on the paper 3, the electromagnetic coil 22 is energized and the body 19 is lowered.

Press the tip of the writing instrument 30 onto the paper 3 with a predetermined pressure.

After that, the drive roller 1 is rotated. At this time, the writing pressure is adjusted by the current flowing through the electromagnetic coil 22. Further, the length of the line drawn on the paper 3 is adjusted by the rotation speed of the drive roller 1. When drawing a line in the Y direction on the paper 3, the electromagnetic coil 22 is energized and the brush is drawn.

After pressing the tip of the marking tool 30 against the paper, the carriage 14
move. Further, when drawing a curved line or a diagonal line on the paper 3, the driving row 21 and the carriage 14 may be driven simultaneously while the tip of the writing instrument 30 is pressed against the paper 3 with the required writing pressure.

In this way, drawing is always done at the top of the drive roller 1, that is, at the position where the feeding force acting on the paper 3 switches from tension to compression, so the slack that occurs in the paper 3 is extremely small, and it is possible to avoid large objects such as pencils, etc. Writing instrument 30 that requires pressure
However, good drawings can be made.

When the carriage 14 moves toward the cassette 31 in response to a command to replace the writing instrument 30, the writing instrument 30 comes into contact with the guide plate 30 that projects into the movement path 7. Furthermore, the carriage 14
When the writing instrument 30° moves, the writing instrument 30° moves while changing its movement path along the guide plate 32. At this time, Potey 19 is
It rotates around the guide shaft 18 and follows the path change of the writing instrument 30. The writing instrument 30 moves along the guide plate 32.

In particular, the pinch rollers 8 can be bypassed.

When the writing instrument 30 passes the tip of the guide plate 32, the spring 27
Since the body 19 is pulled back so as to come into contact with the stopper 28 due to the tension, the writing instrument 30 is also returned to its original movement path. In this way, the writing instrument 30 moves to the exchange position,
The writing instrument 30 is replaced. 30 writing instruments replaced
When moving to the drawing area, the writing instrument 30 is moved in the same way as above.
moves around the pinch roller 8.

〔Effect of the invention〕

As described above, according to the present invention, since the writing instrument is designed to draw at the top of the drive roller, there is no occurrence of slack due to the direction of movement of the paper O, which is very good.

You can efficiently draw diagrams in the current state. It is also possible to reduce wear on the 0 and feed 9 systems.

[Brief explanation of drawings]

FIG. 1 is a front sectional view showing the bag portion of the present invention. Figure 2 is a side sectional view showing the pinch roller section, and Figure 3 is a side sectional view showing the pinch roller section.
FIG. 2 is a partial cross-sectional plan view of FIG. 1; 1... Drive roller, 3... Paper, 8...
Pinch roller, 14... Carriage, 18.
...Guide 1, board, 19...body, 22...
- Electromagnetic coil, 27... Spring, 28... Stopper, 29... Holder, 30... Writing instrument,
32... Information board.

Claims (1)

[Claims] 1. Sandwich the paper between the forward and reverse rotating drive roller and pinch roller and feed it in the X direction, and move the writing instrument in the Y direction parallel to the drawing surface of the paper and orthogonal to the X direction, and in the Z direction perpendicular to the drawing surface. In an automatic drawing machine designed to draw, the center of the electromagnetic coil that moves the writing instrument in the Z direction and the axis of the guide shaft that guides the writing instrument when it moves in the Z direction coincide with the carriage that moves in the Y direction. A holder for holding a writing instrument is slidably and rotatably provided on the guide shaft, and a stopper is provided for regulating the rotation end of the holder so that the held writing instrument is positioned at the top of the drive roller. An automatic drafting machine characterized in that an elastic member is provided for applying rotational force so that the writing instrument contacts a stopper, and a guide plate is provided above the pinch roller so as to protrude into a moving path of the writing instrument in the Y direction. .