JPH03193497A - Method for controlling taking-up of roll paper in paper driving type automatic drawing machine - Google Patents

Abstract

PURPOSE:To form the slackening of roll paper on the side of a paper supply means by taking up the roll paper in such a state that the expanded front end of a drawing range is positioned directly under a writing utensil and subsequently feeding the roll paper forwardly until the rear expanded end of the drawing region is positioned directly under the writing utensil. CONSTITUTION:Roll paper 24 is rearwardly moved by the quantity corresponding to a front margin M1 before drawing is started to move the expanded front end KM1 of a drawing area to the place under a writing utensil 18 and the front margin M1 is set between the front end of the drawing area of this time, that is, Xmax (anti-origin side) thereof and the writing utensil 18 and a paper taking-up motor is driven to take up the roll paper 24 by a take-up means 28. Next, the paper 24 is forwardly moved by an indicated size so that the rear end of the drawing area of this time, that is, Mmin (origin side) thereof is positioned directly under the writing utensil 18 to detect the rear edge of the paper 24 and, when the rear edge is judged to be detected, the drawing processing due to the utilization of cut paper is taken. When the rear edge is judged to be not detected, the rear expanded end KM2 of the paper being the end part expanded by the quantity corresponding to a margin M2 is moved to the place directly under the writing utensil.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a mechanism for transporting the extending portion of the roll paper on the platen in the longitudinal direction of the machine body by rotation of a drive roller, while at the same time transporting the extending portion of the roll paper at right angles to the feeding direction. The present invention relates to a roll paper winding control method in a paper-driven automatic drafting machine in which a pen head is sent in a direction to draw a predetermined drawing with a writing instrument held by the pen head on a protruding portion of a roll paper on a platen.

[Conventional technology]

In this type of paper-driven automatic drawing machine, during drawing, the roll paper is always slackened on the roll paper supply means and roll paper winding means side, so that excessive tension is not applied to the roll paper during drawing. ing.

The slackness of the roll paper on the side of the roll paper winding means is set by controlling the driving rotation of the roll paper winding means, and the slack of the roll paper on the side of the roll paper supplying means is set by controlling the drive rotation of the roll paper supplying means. There is.

[Problem that the invention seeks to solve]

As mentioned above, if two power sources are used to loosen the roll paper on the roll paper supply side and the roll paper take-up side, the structure will be complicated and expensive, and furthermore, the roll paper supply side and the roll paper take-up side will be complicated and expensive. There was a drawback that the control on the winding side and the winding side was complicated.

The present invention aims to eliminate the above-mentioned defects.

[Means to solve problems]

In order to achieve the above object, the present invention has a paper winding means 28 and a roll paper support means 26 at the front and lower sides of the paper placement member 2, and the roll paper 24 supported by the roll paper support means 26 is The drive roller 8 is rotated forward and backward on the paper placement member 2 to feed it in the front and rear directions of the machine body, while the writing instrument 18 is sent in a direction across the paper placement member 2 to form a predetermined drawing area E on the roll paper 24. In a paper-driven automatic drafting machine that is designed to draw, before the drawing starts.

The roll paper 24 is wound around the roll paper winding means 28 with the expanded front end KMI, which is obtained by adding a predetermined margin M1 to the front end Xmax of the current drawing range E of the roller paper 24, positioned directly below the writing instrument 8. Next, add a predetermined margin M to the rear end of the current drawing range E of the roll paper 24.
The drive roller is rotated and the roll paper 24 is sent forward until the enlarged rear end KM2 to which the number 2 is added is located directly below the writing instrument 18.

〔Example〕

The structure of the present invention will be described in detail below with reference to embodiments shown in the accompanying drawings.

In Fig. 11, 2 is the body 4 of a paper-driven automatic drafting machine.
As shown in FIG. 5, a drawing roller 6 is rotatably disposed in a groove formed transparently in the width direction of the sheet mounting member (platen), A drive roller 8 is rotatably disposed in a groove provided parallel to this at the rear. The rollers 6.8 are fixed to a shaft rotatably supported by a bracket fixed to the machine body 4, and the rollers 6.8 interlock with each other and rotate in the same direction at substantially the same circumferential speed. In order to do this, it is linked to an X motor (not shown) via the shaft. A pair of press rollers 10 and 12 are pressed against the drive roller 8 by the elasticity of a spring. A Y rail 14 is fixed between both sides of the body 4, and a pen head 16 is movably attached along the Y rail 14. A pen holder linked to the elevating mechanism built into the pen head 16 is a writing instrument 18.
It is removably held. The pen head 16 is Y
It is configured to be controlled to move in a direction across the mounting member 2 along the Y rail 14 by driving a motor (not shown). In the mounting member 2, paper sensors 20.degree. 22 are disposed before and behind the drawing roller 6, as shown in FIG. The body 4 is provided with a support means 26 for rotatably supporting the roll paper 24 and a paper winding means 28, and the winding means 28 is linked to a paper winding motor (not shown). The support means 26 supports a roll portion of the roll paper 24 in a detachable manner. The extended portion of the roll paper 24 taken out from the roll portion is configured to pass over the placement member 2 and be wound up by the winding means 28 . The body 4 has a built-in controller consisting of a computer, and output devices such as the XY motor, a lifting mechanism for the pen head 16, a paper winding motor, and sensors 20 and 22 are connected to the controller.

Of the pair of pressure rollers 10 and 12, the left roller 10 is set at a fixed position, and the other right roller 12 is set in a fixed position according to the width of the paper 24 on the placement member 2 in the Y-axis direction. It is configured to be movable in the Y-axis direction so that it can be positioned at the end of the paper 24 in the Y-axis direction. The position of the suppression roller 12 relative to the fixed position roller 10 is determined by the pen head 16.
It is configured so that it can be detected by a reflective sensor installed in the sensor. The controller is a host computer;
Operation panel provided on the aircraft body and the sensor 20°22.3
It is configured to receive and receive data from 0, etc., drive and control the output device, and draw a predetermined drawing on the roll paper 24 on the mounting member 2.

Next, the paper initial processing operation will be explained with reference to the flowchart shown in FIG.

The controller enters the paper initial processing operation from label 1, and in block 2 drives the Y motor to move the pen head 16 from the left reference position on the Y axis in the right direction.
The reflective sensor 30 detects the silver paper seal provided on the support arm of the pressure roller 12, thereby detecting the position of the pressure roller 12 with respect to the reference fixed position roller 10. The controller determines the width of the roll paper 24 on the mounting member 2, that is, the Y-axis size.

Next, in decision block 3, the controller determines whether or not the winding means 28 is present based on the output of a limit switch (not shown). If a negative judgment is made, as shown in Figure 3,
Proceeding to block 13, the controller displays on the display section of the operation panel of the aircraft that there is no winding means. Next, the controller determines whether cut paper is to be used or not in decision block 14, and if the controller determines in the affirmative, it performs drawing processing using cut paper in block 15. If a negative determination is made, the operator attaches the winding means 28 to the machine body based on the display on the operation panel, and then proceeds to decision block 3 in FIG. 1. If the determination block 3 is affirmative, the controller drives the X motor to rotate the drive roller 8, which is pressed between the drive roller 8 and the pressure rollers 10 and 12. A certain amount of paper 24 on the mounting member 2,
The machine moves forward as shown in FIG. 5 until the front end Xmax of the current drawing range is located directly below the writing instrument 18 on the drawing roller 6. The controller checks whether the paper 24 has a rear edge based on the state of the sensor 22 at this time.

Next, in decision block 5, the controller decides whether or not the rear edge of paper 24 has been detected.If the controller decides in the affirmative, then in block 11, it performs drawing processing using cut paper. When determining the negative, the controller drives the X motor to move the roll paper 24 backward by a front margin amount of 1 minute, and moves the expanded front end KMI to just below the writing instrument 18, as shown in FIG. , A front margin M1 is set between the front end of the current drawing area, that is, Xmax (side opposite to the origin) and the writing instrument 18, and in this state, the paper winding motor is driven.

The roll paper 24 is wound up on the winding means 28 (block 6). Next, in block 7, the controller moves the paper 24 forward by the specified size, to the rear end of the current drawing area, that is, Mm.
In (origin side) is moved until it is located directly below the writing instrument 18 (see FIG. 7), and it is checked whether there is a rear edge of the paper 24.

In judgment block 8, the controller judges whether or not the rear edge of paper 24 has been detected based on the output state of sensor 22. If the controller judges in the affirmative, it shifts to drawing processing using cut paper (block 12). If a negative determination is made in decision block 8, the controller, as shown in FIG.
Drive the X motor to print paper 2 with 2 margins on the rear side.
4 further forward, and move the rear extended end KM2 of the paper 24, which is the end expanded by 2 margins, to just below the writing instrument 18. As a result, the controller determines that the paper 24 on the placement member 2 is a roll paper. Recognizing this, processing such as hard clipping of the roll paper is performed in block 1o, and the process moves on to the next processing. Xmin, Xma of this drawing range E
When drawing between x, the roll paper 24 is
There is always more slack than the set margin on the 6 side and the winding means 28 side. When drawing is completed on the set drawing range on the paper, that is, between Xm1n (on the origin side) and Xmax (on the opposite side to the origin), the controller starts the roll paper feeding process from label 1 in FIG. When this processing operation starts, the controller, in block 2, sets a margin M1 of a predetermined range on the front (front end) side of the next page, that is, the drawing range.
Then, the front expansion end KMI of the next drawing range expanded by the margin amount 1 is positioned directly below the writing instrument 18. In this state, the currently drawn page is wound up by the winding means 28 by driving the winding motor (see Fig. 9).
That is, with the margin M1 set between the origin side end Xmin on the X axis of the fifth page and the writing instrument 18, the page on which the current drawing has been completed is rotated by the winding means 28 so that there is no slack. It is wound up on the winding means 28 until the state is reached.

Next, in block 3, the controller drives the X motor to move the paper 8 forward by the drive roller 8 by an amount equal to the specified size plus two rear margins, that is, the rear extended end of the first page. The paper 24 is moved forward until KM2 is positioned directly below the writing instrument 18, and an area corresponding to 2 rear margins is formed between the origin side Xm1n of the drawing range of the next page and the writing instrument 18 (Fig. 10). reference).

〔effect〕

As described above, the present invention is capable of forming slack in the roll paper on the paper supplying means side without linking power to the paper supplying means, thereby preventing impact from being applied to the paper during drawing and causing deterioration in drawing quality. In addition, there is an effect that impact is not transmitted from the paper to the front and rear covers of the machine, causing an increase in the amount before drawing.

[Brief explanation of drawings]

Figure 1 is a flowchart, Figure 2 is a flowchart, Figure 3 is a flowchart, Figure 4 is an explanatory front view, Figures 5 to 10 are illustrations of operation, Figure 11 is an external view, and Figure 12 is an external view. It is a diagram. 2... Paper placement member, 4... Body, 6... Drawing roller, 8... Drive roller, 10, 12... Presser roller, 14... Y rail, 16... Pen head , 18
...Writing instrument, 20.22...Paper sensor, 24
... Roll paper, 26... Support palm, 28... Winding means, 3o... Sensor.

Claims (1)

[Claims] (1) A paper winding means 28 and a roll paper support means 26 are provided at the front and lower sides of the paper mounting member 2, and the roll paper 24 supported by the roll paper support means 26 is transferred to the paper mounting member 2.
While the writing instrument 1 is sent in the front and back direction of the machine body by the forward and reverse rotation of the drive roller 8, the writing instrument 1 is
In a paper-driven automatic drafting machine that sends the current drawing range E of the roller paper 24 before starting drawing, the current drawing range E of the roller paper 24 is
The roll paper 24 is wound up by the roll paper winding means 28 with the enlarged front end KMI added with a predetermined margin M1 added to the front end Xmax of the roll paper 24 positioned directly below the writing instrument 8. The drive roller is rotated to feed the roll paper 24 forward until the expanded rear end KM2, which is obtained by adding a predetermined margin M2 to the rear end of the current drawing range E, is located directly below the writing instrument 18. A roll paper winding control method characterized by: