JPS61121997A - Method of fitting pen of x-y plotter - 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 [Field of Application of the Invention] The present invention relates to an x-y
Regarding plotters.

[Background of the invention]

The X-Y7' lock, as shown in FIG. At the same time, a carriage 5 is provided which is movable in a direction (Y direction) perpendicular to the moving direction of the slider 3, and the carriage 5 is moved perpendicularly (up and down) to the recording paper 9 by a pen actuating device 6. A recording pen 7 movable in the direction (Z direction) is provided, and the slider 3, carriage 5, and pen 7 are moved by an arbitrary control signal.
] By doing so, the pen 7 is lowered from the recording window 8 provided on the board 1 to draw figures and characters on the recording paper 9vL.

As shown in FIG.
0 and a drive unit 11 that moves the pen holder 10 up and down. The drive unit 11 includes a stepping motor 12;
It consists of a motor shaft pinion 13 that is directly connected to the rotating shaft of the stepping motor 12, a gear 14 that meshes with the motor shaft pinion 13, and a pinion 14a that is coaxial with the gear 14 and peeks inside. This pinion 14a meshes with a rack 15 provided integrally with the pen holder IO, converting the rotational force of the stepping motor 12 into linear motion, and raising and lowering the pen 7. This rack is 15h! , is constantly biased upward by the spring 16, and when the pen is down, the lower end of the rack 15 comes into contact with the lower rack contact portion tOa of the pen holder lO, and when the pen is up, the upper rank contacts! (The pen holder 10 is configured to operate by coming into contact with S10b. The pen holder lO is vertically movable only between the lower pen holder stopper 17a and the upper pen holder stopper x7b. The movable range of the tip of 7 is equal to the difference between the distance between the lower pen holder stopper 17a and the upper pen holder stopper 17b and the length of the pen holder 10, and the range of movement of the tip of the pen holder 17a is equal to the difference in the length of the pen holder 10. Depending on the type of pen nib 7
You can set the distance between a and recording paper 90 and the lifting range.
c, tail. IEN! This is a set screw for holding the pen 7 in the pen holder 10, and it is possible to press the pen 7 against the inner wall surface of the pen holder 10 with a threaded rod and fix it in any position. 19 is a platen on which the recording paper 9 is placed.

By attaching the X-Y plotter 1 and the soft pen or hard pen to the pen holder, the stiff pen 7 can be raised and lowered over a distance of 10 mm in steps of 0.2 mm. For example, if the rotation angle per step of the stepping motor 12 is 18 degrees, the motor rotation pinion 1
3° gear 14. It is designed taking into account the reduction ratio of the gear train consisting of the pinion 14a and the rack 15.
For control efficiency, it is possible to move 10 mm in 50 steps.

When setting the pen 7 on an X-Y plotter with such a configuration, conventionally, the tip pen holder 10 is set at the 10 mm
Move the pen tip 7a to the upper limit position of the movement stroke B and make this position the home position, then move the pen tip 7a 1 to 2 m from the 9th surface of the recording paper so that the nib 7a does not touch the 9th surface of the recording paper.
I made small adjustments to maintain the distance of m. However, with a soft pen such as a pencil, a sufficient movement stroke is required, so the pen holder 10 must be pulled up to its upper limit and the pen 7 attached.
In the case of a hard pen, the movement stroke of pen 7 should be 2 to 3.
It is preferable to install the pen with the setting set to
+nm, and if the contact pressure of the pen tip 7a to the recording paper 9 cannot be maintained properly, blurring will occur.

Therefore, in the conventional method of attaching the pen 7, it is necessary to adjust the distance between the pen tip 7a and the surface of the recording paper 9 depending on the type of pen to be attached and the length of the pen tip.
hsIt was an extremely difficult task.

[Purpose of the invention]

The present invention has been made in view of this point, and its purpose is to easily adjust the distance between the pen tip and the recording paper surface regardless of the type of pen or the length of the pen tip, and to make it possible to easily adjust the distance between the pen tip and the recording paper surface. The purpose is to propose a method for attaching the pen.

[Summary of the invention]

In order to achieve the above objects, the present invention provides a pen for recording on recording paper, a pen holder for supporting the pen, a pen actuator for moving the pen holder up and down relative to the recording paper using a stepping motor, and a control signal for controlling the pen holder. In the plotter, the vertical position of the pen holder is set approximately at the center of the total movement width, so that the pen tip and the recording paper surface are relatively close to each other. Fix the pen to the pen holder L
r: Then, move the stepping motor in the down direction by -f6 steps, which corresponds to more than half of the total movement range, and then return the stepping motor by a predetermined step from the state where the pen tip is in contact with the recording paper surface, and hold the pen holder at the required interval. The structure is such that the distance between the pen tip and the recording paper surface can be adjusted by moving the pen in the upward direction.

[Embodiments of the invention]

Embodiments of the present invention will be described below with reference to the drawings.

Figure 1.2.3 is an explanatory diagram showing how to install the pen and adjust the distance between the pen tip and the recording paper surface. Figure 1 is a side view when the pen is set, and Figure 2 is a side view of the pen. FIG. 3 is a side view with some parts omitted showing a state in which the pen tip is in contact with the recording paper; FIG. The figure is a perspective view showing the appearance of the carriage and pen used in the present invention. In this embodiment, the same components v as in the conventional example are used.
L and C are given the same reference numerals, and explanations thereof will be omitted.

When attaching pen 7, first place pen holder lO in
As shown in the figure, the pen holder is set at the center of the entire movement width, that is, approximately in the middle between the lower pen holder stopper 17a and the upper pen holder stopper 17b. Next, insert the pen 7 into the pen holder IO from above, set it relatively roughly so that the distance is 4 mm or less from the surface of the recording paper 9 (Omm≦A≦4 mm), and tighten the setscrew 18. Fix it. Thereafter, the stepping motor 12 is rotated in the pen-down direction, and the motor 12 is moved by 50 steps, that is, the pen 7 is moved by 10 mm. However, although control signals for 50 steps are sent to the motor 12, in reality the pen tip 7
When a comes into contact with the recording paper 9, the motor 12 goes out of step, and 5
After the 0-pulse energization, the pen tip 7a always remains in contact with the surface of the recording paper 9. Therefore, at this time, the distance between the pen tip 7a and the surface of the recording paper 9 is zero (FIG. 2). and,
From this state, if the motor 12 is reversely rotated by the required interval C1, that is, a predetermined pulse, and the pen 7 is moved in the upward direction, a constant interval C between the pen tip 7a and the surface of the recording paper 9 can be obtained. This distance C+s is desirably about 2 mm (10 steps), for example, in the case of a hard pen such as a commonly used felt-tip pen. This number of steps is because a stepping motor designed to be able to move 10 mm in 50 steps is used, and the rotation angle of the stepping motor 12 used is 1 step per hour and the gear train that drives the pen holder 10. It is selected as appropriate depending on the reduction ratio.

〔Effect of the invention〕

As is clear from the above explanation, the stepping motor is advanced all steps to bring the pen tip into contact with the recording paper, and from that state, the motor is returned for a predetermined step to raise the pen and adjust the distance between the recording paper surface and the pen tip. According to the present invention, (1) the height at which the pen is attached to the pen holder can be roughly set, and even a person who is inexperienced in using this type of device can easily set and use the pen;

- By returning the distance between the pen and the recording paper by a predetermined number of steps, the distance between the pen and the recording paper surface can be kept constant at all times, so there is no possibility of scratching or blurring during recording. Ding, that is,
Ensure stable recording performance at all times.

There is an effect.

[Brief explanation of drawings]

1st゜2. 3. Figure 4 is an explanatory diagram for explaining the method of attaching the pen according to the present invention. Figure 1 is a side view when the pen is set, and Figure 2 is a side view showing the state in which the pen tip is in contact with the recording paper. Figure 3 is a side view showing how the stepping motor is returned by a predetermined step to adjust the distance between the pen tip and the recording paper surface. Figure 4 is an external view of the carriage and pen used in the present invention. FIG. 5 is a perspective view showing an example of an X-Y plotter, and FIG. 6 is a side view for explaining a conventional pen mounting method. 3...Slider device, 7...Pen, 7
a... Pen tip, 9... Recording paper, 10.
...Pen holder, 12...Stepping part. Figure 5 Figure 6

Claims (1)

[Claims] A pen that records on recording paper, a pen holder that supports the pen, a pen actuator that moves the pen holder up and down relative to the recording paper using a stepping motor, and a pen holder that moves parallel to the surface of the recording paper according to a control signal. In a plotter equipped with a slider device, set the vertical position of the pen holder in advance to approximately the center of the total movement width,
After fixing the pen to the pen holder at a position where the pen tip and the recording paper surface are relatively close to each other, the stepping motor is moved down by a step amount equivalent to about half or more of the total movement range, so that the pen tip touches the recording paper surface. Pen installation for an X-Y plotter characterized in that the distance between the pen tip and the recording paper surface can be adjusted by returning the stepping motor by a predetermined step from the state in which they are in contact with each other and moving the pen holder upward by the required distance. Method.