JPS5974000A - Pen lifting controller - 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 The present invention relates to a pen lifting/lowering control method for an automatic drawing device, in which a current for generating a self-weight balancing force of the pen driving section is supplied to the pen motor in advance so that the entire pen movement starts from the pen movement starting point. The % sign is to speed up to 1/2 of the travel distance, decelerate from that point to the pen travel end point, and when the speed reaches zero, apply a predetermined voltage to the pen motor to add the necessary differential pressure. This invention relates to a pen lift control device.

Conventionally, pen elevation control in an automatic drawing device involves on/off control of raising and lowering the pen driving device at 2t, and the opening speed from when the pen begins to descend until it reaches the paper is not controlled. Therefore, when the pen reaches the paper, the pen vibrates, resulting in broken lines where it is being drawn, and the shock the pen receives causes too much ink to come out of the pen, making it difficult to draw clean lines. p1 that wasn't there
In addition, there was a drawback that the pen tip was difficult to use.The present invention solves the above-mentioned drawback, and when the pen is moved up and down,
Perform JII speed wave velocity and reach the paper with zero velocity, then i
The purpose of this is to improve the image quality by applying voltage.

Hereinafter, the present invention will be described in detail with reference to the drawings.

A practical example of the present invention is shown in the drawing, in which the pen movement control 11 circuit 1 is composed of a movement amount register 2, an 1/2 register 3, a second switch time Ni 4, and a ROM 5 for generating [, 1 number]. When the movement amount is set in the movement amount register 2, the value of 1/2 of the movement amount is set in the 1/2 register. The second switch 11'11 selects a signal from the movement amount register or the 1/2 register, and the selected signal is inputted to the function generation ROM 5 to input the speed command value corresponding to the low or low level of tL. is output from the first switch circuit 7, and is input to the DA controller 8. This signal is converted into an analog signal by a DA controller 8, amplified by an intensifier 9, and applied to a pen motor 13 in a pen drive section. pen m'J
11 The unit 11 consists of a pen motor 13, an encoder 12, a pen driving mechanism 14, and a pen 15. When the pen motor 13 rotates, the pen moves up and down to the pen k] by the movement GI'l'G.

An encoder 12 is attached to the pen motor 13 and corresponds to the amount of movement of the pen.
stone.

f old switch times ", 17 is r ha several times cow ROM5 to σ]
q and signal θ from negative pressure register 6) 4. IJ#)
' 77 > My brother is 11, to 7 Kap, the movement is over "c F'? jiil Ic IF"A pQ'i
%"; Switch the @ number from JE ROM 5 to the voltage control V ginuta 6 and apply the voltage corresponding to the required action to the pen motor 13. On the other hand, the self-weight balance force generation circuit 10 is connected to the multiplier 9. A signal is applied to the pen motor 13 so that even when the speed command value from the connected function generating ROM 5 is zero, the pen 15 can remain stationary at qL without falling. I'll keep it.

Next, the operation when the pen descends will be explained according to the drawing.

First, set the switches of the ηro switch circuit 7 and the second switch circuit a'j4 to A and 1llll, respectively, and set them to 1.
/2 Register 3IL A value is preset so that the speed instruction value of the gate number generation ROM 5 becomes zero. Function generation ROM5
The speed instruction value is written in advance to the memory with the contents of the 1/2 register as the end address, and as the address approaches zero, the value increases, and when it reaches zero, it shows the maximum value, and the value increases as the address approaches 1/2. When the I'J value of the register passes zero and the complement is obtained, fL decreases from there -) n conversely, the value decreases from the maximum value, and from the end address corresponding to the end point of the pen movement, V of zero In addition, a value of zero is also stored in the address when the contents of the moving group register 2 are zero. A signal f't for supporting the weight of the pen J5 is outputted from the automatic force generating circuit 11O, and is applied to the pen motor 13 through the width gauge 9. Next, the amount of movement of the pen 15 until it reaches the RI is written in the movement amount register 2.
Setting 1/2 of that value to the 1/2 register will result in 17.
21/The value of register 3 passes through tA2 switch circuit 4 and becomes I
'l is input to the number generation ROM 5 and a speed instruction value corresponding to that value is output n tJ 1 switch times lll 157, DA
Voltage is applied to the converter 8, amplifier 9, and oripen motor 13. The pen motor 13 moves to p'5t.
When hh is done, the encoder 12 attached to the pen motor 13 automatically generates a slug.
;fltQftv, ;r, subtracts 1 ;r from 2 and 1/2 registers 3 by 1. The pen moves I
i, 172' of Il amount! When it descends, the contents of the 1/2 counter becomes zero, and the speed instruction value to the pen motor 13 reaches the maximum, and the pen force (when it descends, the complement force Gradually decreases.Pen 1575 (movement register 2 input when moving the full travel distance) to 7F?Local (113) This signal causes the second switch Il!a 4 switch to be turned B il'1.
ll and function generation ROM5 for ¥! - Connect to the heavy register 2 and set the speed of the pen to zero l times. Immediately thereafter, the switch of the first switch circuit 7 is set to B411, the output signal of the equal voltage register 6 is inputted to the DA controller 8, the amplifier 9 is turned off, and the voltage is applied to the pen motor 13.
10 and add the seasoning. Pen power (pil when rising
This is done by performing the same operation in reverse as described above.

As described above, according to the invention, when the pen descends, it smoothly accelerates from zero speed, decelerates from 1/2 of the moving stroke, reaches the paper at zero speed, and then immediately adjusts the pressure. Because of this, the pen does not collide with the paper, and damage to the pen tip is greatly reduced.At the same time, there is no vibration of the pen or ink coming out when it collides, and the drawing quality is the same as above. Since acceleration and deceleration are performed in the same manner when the pen moves up and then stops, vibrations do not occur when the pen rises and comes to a standstill, making it possible to immediately proceed to the downward movement.

[Brief explanation of drawings]

The drawing shows a block diagram of one embodiment of the wooden invention. 10. pen) old Dotsukuda 1 f'l11 circuit 20. Move n register 3, . 1/2 register 56. Number of gates generated 90M 610 Rod pressure register 70. First switch circuit 3, DA converter 9°, amplifier 100. Self-weight comb force generation circuit 11°. Pen drive section 120. Encoder 131. Pen motor 14°, pen motor groove 156. Applicant for Pen and above: Second Loesha Co., Ltd.

Claims (1)

[Claims] In the pen elevation control device of an automatic drawing device,
Pen P that performs the lowering: AK'sJ section, pen motor for configuring this pen drive section, pen FX Ib machine INK
, an encoder and a pen, an amplifier for supplying electric power to the Ben motor described in Pl+ and +, and a mutual force generation circuit connected to this amplifier for constantly supplying a control signal at a constant level to the pen motor. , a voltage register that generates a signal to output a differential pressure, a first switch circuit for inputting a control I signal from this differential pressure register, and a digital signal from the first switch circuit that converts into an analog signal. an ODA converter, a pen movement control circuit input to the first switch circuit, a movement register, a 1/2 register, a 1/2 register, a second switch circuit, and a function generation ROM for configuring the pen movement control circuit. Equipped with this, it starts moving at zero speed from the starting point of the pen movement and is 1/1 of the county moving scene!
Up to the point, the function generation RO is controlled by the 1/2 register.
When acceleration is performed by M, deceleration is performed until the movement end point is reached at 8, and when the speed reaches zero, a predetermined voltage is applied from the lead resistor to the pen motor. Pen lift control device with one feature.