JPS63139800A - Holding mechanism of pen or cutter in plotter device - 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 Field of Application) The present invention relates to a pen in a plotter device that is capable of bringing a pen, cutter, etc. into contact with drawing paper, cutting material, etc. on a drawing board with an appropriate pressing force. Or it relates to a cutter holding mechanism.

(Prior art and its problems) In a conventional plotter device, a holder for holding a pen or a cutter is moved along the length of a moving rail body that moves vertically or horizontally on a drawing board. The movable rail body and the holder are moved in the X-axis and Y-axis directions of the drawing board, thereby allowing free drawing or cutting.

By the way, when starting drafting or cutting, it is necessary to slide the holder of the movable rail body downward to lower the pen or cutter onto the drafting paper or cutting material. In this case, conventionally, by using a solenoid mechanism, the polarity of the magnet between the rail body and the holder is reversed, so that the pen or cutter is lowered by the repulsive force of the holder. However, with this type of method, the magnetic repulsion is too strong, which can damage the paper surface, make lines too thick, smudge, and even damage the pen tip.

It is also desirable that the pressure of the pen or cutter on the paper is always uniform; Since the surface of the placed drawing paper or cutting material is slightly undulating, it is technically very difficult to maintain the same pressure.

(Technical Problem of the Invention) The present invention solves the above-mentioned drawbacks, and allows the pen or cutter to be gently lowered to the paper or cutting material surface especially at the start of drafting or cutting. The technical problem is to provide a holding mechanism for a pen or a cutter in a plotter device that can keep the pressure of the cutter constant.

(Means for Solving the Problem) - In order to solve the above technical problem, the pen or cutter holding mechanism in the plotter device according to the present invention includes an air cylinder device attached to a movable rail body provided on the drawing board. A micrometer is provided on the upper part of the slide member, and a holder for a pen or cutter is provided on the lower part of the slide member so as to be movable in the vertical direction. The micrometer is arranged so as to be able to be pressed downwardly against the slide member, and the piston rod of an air cylinder device provided on the slide member is arranged so as to be able to be pushed downwardly against the slide member. do.

(Operations and Effects of the Invention) As described above, according to the pen or cutter holding mechanism in the plotter device according to the present invention, during drafting or cutting work, the holder is moved downward via the slide member by a micrometer. After setting the distance between the tip of the pen or cutter and the surface of the drawing paper or cutting material according to the thickness of the drawing paper or cutting material, the air cylinder device is operated to move the piston using air pressure. The rod protrudes and further lowers the holder slowly, bringing the tip of the pen or cutter into contact with the surface of the drawing paper or cutting material.

In this way, the micrometer allows fine adjustment of the spacing, and since the tip of the pen or cutter is lowered gently by air pressure from the air cylinder device, there is almost no impact with the drawing paper or cutting material, and there is no chance of damage. It is possible to prevent inconveniences such as

In addition, during subsequent drafting or cutting work, the pressure of the pen or cutter against the paper surface is uniform and always properly maintained by the air pressure due to the cushioning effect of the air cylinder device, so the drafting paper placed on the drafting table Or even if the surface of the cutting material is uneven, the same pressure is maintained and the finish is very good.

(Example 1) Hereinafter, embodiments of the present invention will be described with reference to the drawings.

1(a), 1(b), and 1(c) are a front view, a side view, a vertical cross-sectional view of a main part in a side part, and a vertical sectional view of a main part of a side part, showing the structure of a holding mechanism for a pen or cutter in a plotter device according to an embodiment of the present invention. FIG. 2 is an overall view of the plotter device.

In the figure, the symbol A indicates a plotter device. This plotter device A includes a pair of parallel guide rails 2 and 3 fixedly arranged on a pair of opposing upper and lower sides of a drawing board 1, and A movable rail body 4 supported by guide rails 2.3 so as to be slidable in the lateral direction at both ends, and a pen holding portion 5 supported so as to be movable in the longitudinal direction along the movable rail body 4. have. Then, the drawing on the drafting table l is made by the horizontal movement (X-axis movement) of the movable rail body 4 along the guide rails 2 and 3 and the vertical movement (Y-axis movement) of the pen holder 5 itself along the movable rail body 4. The movable rail body 4 is configured to be freely drawn on the paper la.
The movement of the pen holder 5 is controlled by a microcomputer via a control section 6.

As shown in FIGS. 1(a), 1(b), and 1c, the pen holding portion 5 is provided on a holding member 11 fixed to a movable base lO that is movable in the longitudinal direction of the movable rail body 4. ing. This holding member 11 has a recess 12 at its rear portion, and the recess 12 is fitted into a projection 13 of the moving table 10 and fixed by screws 14.

A first slide guide portion 1 is provided on the front surface of the holding member 11.
5, and a slide member 16 is held in the first slide guide portion 15 so as to be movable up and down. Further, a mounting portion 17 is formed projecting forward from the upper portion of the slide member 16 of the holding member 11, and a micrometer 18 is fixed to the mounting portion 17. Further, a unit-shaped second slide guide part 19 having a bearing for finite linear motion is provided at the lower part of the first slide guide part 15 of the holding member 11, and a pen 20 is mounted on the second slide guide. A pen holder 21 to be held is provided to be movable up and down.

The slide member 16 provided on the first slide guide section 15 is urged upward by a spring 22 stretched between it and the mounting section 17, and similarly the slide member 16 provided on the first slide guide section 15
The pen holder 21 provided at 9 is urged upward by a spring 23 stretched between it and a frame 30 fixed to the slide member 16. Note that the upper end of the biasing spring 23 of the pen holder 21 may be fixed to the holding member 11.

The lower end of the micrometer 18, 18a, is the slide member 16
are placed facing each other on the top surface.

The slide member 16 also includes an air cylinder device 1i.
124 are provided. This air cylinder device M24 houses a piston 26 in a cylinder 25 provided in the slide member 16 so as to be able to move up and down, and a piston rod 27 is integrally connected to the piston 26 so that the lower end thereof is placed below the slide member 16. The cylinder 25 is arranged so as to protrude and face the upper surface of the pen holder 21, and the upper part of the cylinder 25 is connected to an air supply source 28.

Next, how the pen holding mechanism having the above structure is used will be explained. First, when drafting, the thickness of the drafting paper,
It is necessary to provide an appropriate distance between the tip of the pen 20 and the drawing paper 29 depending on the unevenness of its surface. this is,
In order to draw the next line, the pen 20 that was in contact with the drawing paper 29 is temporarily separated from the drawing paper 29 when one line drawing, etc. is completed, and the dead end of the pen 20 is drawn. This is because if the distance is too large, the tip of the pen 20 may hit hard the next time the pen 20 comes into contact with the drawing paper 29, and if it is too small, the writing Even if the pen 20 is separated at the end, the tip of the pen 20 may come into contact with the protrusions of the wavy unevenness formed on the surface of the drawing paper 29, so it is preferable to keep the tip of the pen 20 a little further away than the protrusions. ,
The above interval is such that the slide member 16 is pressed downward by the micrometer 18, moved downward against the force of the spring 22, and the pen holder 21, which is in contact with the piston rod 27 protruding from the lower part of the slide member 16, is moved downward by the force of the spring 22. It can be precisely obtained by moving it downward against a force of 23.

Next, when actually drafting, place the pen 20 on the drafting paper 29.
When making contact with the pen holder 21, the air cylinder device 24 is actuated by a command from the control unit 6, and the air pressure causes the piston rod 27 to further protrude downward to press the pen holder 21, and the pen holder 21 is moved by the force of the spring 23. The tip of the pen 20 is brought into contact with the surface of the drawing paper 29 by gently lowering the pen 20 against the drawing paper 29. In this way, the tip of the pen 20 is lowered by the air pressure from the air cylinder device 24, so that it
There is almost no impact on the paper 29, and inconveniences such as damage to the paper 29 can be prevented.

In addition, during the subsequent drafting work, the air pressure of the air cylinder device 24 ensures that the pressure of the pen 20 against the surface of the drafting paper 29 is uniform and always properly maintained, so that the drafting paper placed on the drafting table is kept at an appropriate level. The unevenness generated on the surface of the spring 29 is absorbed by the cushioning effect of the air pressure and the spring pressure of the spring 23.

Note that it is preferable that the air pressure supplied to the air cylinder device 24 is set so that the pressure of the pen 20 is approximately the same.

(Embodiment 2) FIGS. 3(a), 3(b), and 3(c) show a front view, a side view, a plan view, and a top view of the structure of a cutter holding mechanism in a plotter device according to another embodiment of the present invention. It is a perspective view, and the same parts as the holding mechanism of the pen 20 in the plotter device of the first embodiment are denoted by the same reference numerals, and redundant explanation will be omitted.

The cutter holding mechanism in the plotter device of this example is such that a cutter 32 is attached to the holder instead of the pen 20 in the first embodiment.

Since the cutting edge 32a of the cutter 32 must be aligned with the direction of movement of the movable rail body 4 or the movable table IO at the time of starting cutting, the cylindrical mounting shaft 33 is rotatably provided with respect to the cutter holder 21, and the photo sensor 34
Accordingly, the cutting edge 32a of the cutter 32 is configured to face the reference direction. Note that the cutter holder 21 is urged upward by a spring 31 between it and the mounting portion 17, and the slide member 16 is also urged upward by an auxiliary spring 31a.

That is, the mounting shaft 33 is rotatably provided on the bearing portion 35 of the holding member 11, and a pair of opposing screws 37.
A worm foil 40 is provided on the lower outer periphery of the mounting portion 39 of 37, and a 4 (l) screw 41.4 is provided at the lower end.
1.41.41 is mounted towards the center. The upper part of the mounting shaft 33 of the mounting part 39 is released, and the facing screw 37.
37 is provided at a position eccentric from the center of the mounting shaft 33,
Further, a permeable hole 42 is formed at a predetermined side surface position to penetrate toward the center.

Further, a worm 43 that meshes with a worm wheel 40 of the mounting shaft 33 is attached to the holding member 11, and the worm 43 is operatively connected to a step motor 44. On the other hand, the photosensor 34 is provided at the same height as the transmission hole 42 of the mounting shaft 33 in the holding member 11, and the photosensor 34 is electrically connected to the step motor 44, so that the photosensor 34 can be transmitted through the mounting shaft 33. The step motor 44 is set to stop operating when the hole 42 is sensed and activated.

The upper end 32b of the cutter 32 is bent into a 5-shape, and the cutting edge 32a is formed in the same direction as the bending direction.

With the above configuration, the cutter 32 is inserted into the mounting shaft 33, and its upper end bent portion 32b is attached to the opposed screw 3 on the upper part of the mounting shaft 33.
7.37, the lower end of the cutter 32 is fixed at a predetermined position by adjusting the pressure, and the lower end of the cutter 32 is fixed with four facing screws 41.4.
Position and fix its center by 1.41.41.

This determines the center of the cutter 32.Next, the step motor 44' is activated, the worm 43 is rotated, and the worm wheel 40 is rotated.In conjunction with this, the mounting shaft 33 is rotated, but the transmission hole 42 When the motor reaches a position facing the photosensor 34, the photosensor 34 senses this and stops the step motor 44. This causes the cutting edge 32a of the cutter 32 to face in the reference direction.

When cutting a material to be cut, such as a piece of cloth or a vinyl sheet, using the holding mechanism of the cutter 32 in the plotter device, the angle of the mounting shaft 33 is changed from the reference position detected by the photosensor 34 to the next rotational position. The amount of rotation of the worm 43 necessary for the rotation is stored in the control unit 6 such as a microcomputer, and when the scanning direction of the cutter 32 for cutting the cutting material changes, the rotation amount of the mounting shaft 33 corresponding to the amount of change in the scanning direction is The amount of rotation of the worm 43 necessary to realize the angle change is read out and output to the motor 44 as a control signal. Therefore, the cutting edge 32a always faces in the scanning direction of the holding member 11 of the cutter 32 in the plotter device, and the cutting material can be cut automatically and smoothly.

In the above example as well, when the cutter 32 is brought into contact with the cutting material, the F-cylinder device 24 is activated, and its air pressure causes the piston rod 27 to further protrude downward, press the mounting shaft 33, and slowly descend downward. let me,
The tip of the cutter 32 is brought into contact with the surface of the cutting material.

In this way, the tip of the cutter 32 is connected to the air cylinder device 24.
Since the cutting material is lowered by air pressure, there is almost no impact on the cutting material, and problems such as damage to the cutting material can be prevented.

Furthermore, during the subsequent cutting operation, the pressure of the cutter 32 against the cutting material is always maintained uniformly by the air pressure of the air cylinder device 24.
Irregularities generated on the surface of the cutting material placed on the drafting table are absorbed by the action of the shoe 91 due to the air pressure and spring pressure.

[Brief explanation of the drawing]

FIGS. 1(a), 1(b), and 1(c) are a front view, a side view, and a vertical cross-sectional view of a main part of a side surface showing the structure of a pen holding mechanism in a plotter device according to an embodiment of the present invention. Second
The figure is an overall view of the above plotter device, Figure 3 (a) (b)
(c) is a front view, a side view, and a plan view showing the configuration of a cutter holding mechanism in a plotter device according to a second embodiment of the present invention, and FIG. 4 is a perspective view of the cutter. Code 1...Drawing board, 2.3...Guide rail, 4...
- Vertical rail, 5... Holding part, 16... Slide member, 21... Pen holder, 39... Micrometer,
20... Air cylinder, 21... Piston, 32...
... Worm wheel, 31... Worm. Figure 1 (a) (b) (C) Figure 1: Figure (c)

Claims (1)

[Claims] A slide member having an air cylinder device is held movably up and down on a movable rail body provided on a drawing board, a micrometer is provided at the top of the slide member, and a pen or cutter is held at the bottom of the slide member. A holder is provided so as to be movable up and down, the slide member and the holder are biased upward, and the micrometer is arranged so as to be able to be pressed downward against the slide member, and a piston of an air cylinder device provided on the slide member is provided. 1. A holding mechanism for a pen or cutter in a plotter device, characterized in that a rod is arranged so as to be able to press downward against a slide member.