JPH08125810A - Drawing data reader - Google Patents

Abstract

PURPOSE: To read a drawing by a scanner without dismounting it from the reader and to improve the operability in a drawing work. CONSTITUTION: The reader is provided with an endless sheet moving a drafting board 11 while turning the front and rear sides of the board 11 horizontally, rotary rollers 25, 26 driving the endless sheet 28 in a moving direction, and a scanner 41 fixed to the rear side or a side face of the drafting board 11 and opposite to the endless sheet 28. When the endless sheet 28 is moved, the scanner 41 converts a drawing Z sequentially into draft data and provides the output of the data to a CAD device 67.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention uses CAD to draw a drawing.
The present invention relates to a device that can be read as drafting data used in a device or the like.

[0002]

2. Description of the Related Art A drawing data reading apparatus of this type is disclosed in, for example, Japanese Unexamined Patent Publication No. 2-62299. A conventional drafting data reader as disclosed in this publication is constructed by connecting an operation head to which a ruler is attached to a vertical rail movably supported by a horizontal rail. And a scanner is attached to the vertical rail,
By moving the vertical rails along the horizontal rails, drafting data can be read by the scanner.

[0003]

However, in the conventional drafting data reader described above, since the vertical rail is provided with the scanner, the weight of the vertical rail becomes large, and the vertical rail has a larger weight than the apparatus without the scanner. Operability is reduced. Also, once the drawing paper is fixed on the drawing board, for example, when drawing on the edge of the paper,
The vertical rail and the operating head must be moved to that position, and the operability is complicated. Furthermore, depending on the drawing position, it may be difficult to move the ruler to that position.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and it is possible to easily read a drawing written by a universal parallel ruler or the like with a scanner and to improve the operability in drawing work. It is an object of the present invention to provide a drastically improved drafting data reader.

[0005]

In order to achieve the above-mentioned object, a first drafting data reader according to the present invention comprises an endless sheet which moves around the front and back of a drafting plate in the left-right direction or the up-down direction. A drive means for driving the endless sheet in the moving direction and a scanner which is fixed to the back surface or the side surface of the drawing board so as to face the endless sheet and which reads a figure drawn on the drawing sheet on the endless sheet, are provided. It has a feature.

The driving means may include a pair of rollers rotatably provided on the drawing board and supporting both ends of the endless sheet, and the scanner may be arranged near one of the back surfaces of the rollers.

A second drafting data reader according to the present invention includes a horizontal rail fixed to the upper edge of the drafting plate, and a vertical rail movably connected to the horizontal rail and crossing the upper surface of the drafting plate. A drawing data reading device having an operating section rotatably fixed to the vertical rails and having rulers orthogonal to each other, which is an endless sheet that moves around the front and back of a drawing board in the left-right direction and the endless sheet. Is provided with a drive means for driving in the moving direction, and a scanner which is fixed to the back surface or the side surface of the drafting plate so as to face the endless sheet and reads a figure drawn on the drafting paper on the endless sheet. .

[0008]

When the endless sheet is driven in the left-right direction or the up-down direction by the driving means, the endless sheet moves around the front and back of the drawing board. At this time, the scanner, which is fixed to the back surface or the side surface of the drawing board and faces the endless sheet, sequentially converts the drawings into drawing data and outputs the drawing data to a CAD device or the like.

[0009]

The present invention will be described below with reference to illustrated embodiments. FIG. 1 is a perspective view of a drawing table to which a drawing data reading device according to a first embodiment of the present invention is applied. This drawing base is fixed by legs (not shown), and an operator usually performs a drawing operation by being positioned on the lower side of FIG. 1, that is, on the front side of the drawing board 11.

A horizontal rail 13 is fixed to the upper edge of the drawing board 11, and one end of a vertical rail 17 is connected to the horizontal rail 13 via a joint case 15. Drafting board 11
A guide rail 12 is fixed to the lower end of the vertical rail 17, and a roller 14 attached to the other end of the vertical rail 17 is in contact with the guide rail 12. As a result, the vertical rail 17 maintains a substantially right angle relationship with the horizontal rail 13,
Can be moved in the left-right direction, that is, in the left-right direction of the drawing board 11.

The operation head 19 is rotatably attached to the vertical rail 17 and is movable along the vertical rail 17. A ruler mounting member 21 is rotatably provided on the operation head 19, and a vertical ruler 23 and a horizontal ruler 24 held at right angles to each other are mounted on the ruler mounting member 21. That is, when the operation head 19 is rotated, the vertical ruler 2
3. The horizontal ruler 24 rotates while maintaining a right angle relationship. In the state where the vertical ruler 23 is substantially parallel to the vertical rail 17, a dead space of a gap D exists in the horizontal direction between the vertical ruler 23 and the vertical rail 17.

The rotating rollers 25 and 26 are arranged so as to face the left and right edges of the drafting plate 11 with a gap therebetween, and rotate at one end of the horizontal rail 13 and at the other end of the protrusion 11a formed on the drafting plate 11. Freely supported. The rotating rollers 25 and 26 have a function as a driving unit that moves the endless sheet 28 in the moving direction. That is, the rotating rollers 25 and 26 are rotationally driven by the electrically connected drive circuit 65, and the endless sheet 28 is guided in the moving direction with this rotation.

The endless sheet 28 includes rotating rollers 25, 26.
It is wound while maintaining a constant tension between. The endless sheet 28 is in sliding contact with the front surface and the back surface of the drawing board 11, and is movable in the left-right direction of the drawing board 11 while sliding in contact with the front and back surfaces of the drawing board 11 as the rotating rollers 25 and 26 rotate.

The drawing sheet Z is fixed to the surface of the endless sheet 28 by fixing tapes 31 and 32 provided on both edges thereof. That is, the fixing tapes 31 and 32 are made of, for example, stainless steel or the like, and have an endless sheet 28 having magnetism.
Is adsorbed on.

The scanner 41 is detachably fixed to, for example, the back surface of the right edge portion of the drawing board 11, and is provided so as to face the endless sheet 28. That is, the scanner 41 is disposed on the back surface of the rotating roller 26 and extends along the lateral edge of the drafting plate 11 so as to cover the drawing range of the drafting plate 11. In other words, the scanner 41 is provided over substantially the entire length of the drawing board 11 in the vertical direction. The scanner 41 has a function of converting a graphic drawn on the drawing sheet Z on the endless sheet 28 as electronic data, and as shown in FIG.
The reading port 43 of is opposed to the drawing board 11 so as to cover the drawing area in the vertical direction. As the scanner 41, a scanner used in a conventional CAD input device or the like may be used as it is.

As shown in FIG. 1, the scanner 41 is electrically connected with an operation unit 63, a drive circuit 65 and a CAD device 67. The operation unit 63 is provided with an operation button (not shown) for starting the reading operation at a position where an operator can easily operate it. The drive circuit 65 has a function of driving the endless sheet 28 in the moving direction. That is, the drive circuit 65 is configured so that the rotating roller 2 is operated in accordance with the operation of the operation unit 63.
The endless sheet 28 is moved in the direction of the arrow in FIG. Further, the drive circuit 65 appropriately drives the scanner 41 and the CAD device 67 according to the operation of the operation unit 63.

The rotating rollers 25 and 26 are made of a material that produces a constant frictional force with the endless sheet 28,
As described above, when the rotary rollers 25 and 26 rotate, the endless sheet 28 moves in the direction of the arrow in FIG. 1 with the rotation. On the other hand, the frictional force between the rotating rollers 25 and 26 and the endless sheet 28 is such that it can be manually moved. Therefore, in a normal drawing state, the endless sheet 28 can be slid to the left and right.

FIG. 3 is a block diagram of the scanner. The scanner 41 has an illumination system, an optical system, and an image processing system.

The illumination system includes a lamp 45 and a lamp lighting circuit 4
7 and the heater circuit 49. Lamp 45
Is a high-intensity scanner lamp, which is provided near the reading port 43 as shown in FIG.
It is turned on according to the control of 1. and the drawing paper Z near the rotary roller 26 is irradiated. A heater circuit 49 is provided near the lamp 45 to keep the temperature of the lamp 45 constant. This stabilizes the brightness and the light distribution characteristics.

The optical system includes mirrors 51a, 51b, 51
c, a shading correction plate 53, a lens 55, etc., and mirrors 51a, 51b, 51c as shown in FIG.
Reflects the light reflected from the drafting paper Z which is incident from the reading port 43 while reducing it and guiding it to the lens 55 via the shading correction plate 53. The lens 55 is
The incident reflected light is imaged on the light receiving surface of the CCD sensor 57 (FIG. 2).

The image processing system has a function of converting the reflected light formed on the light receiving surface into an image signal and outputting the image signal. That is, the reflected light from the drawing paper Z is photoelectrically converted by the CCD sensor 57, amplified by the amplifier circuit 59, and then output to the CAD device 67 (FIG. 1) via the driver circuit 61.

The operation of this embodiment configured as described above will be described. In the drawing table of the present embodiment, the drawing sheet Z is the endless sheet 2 on the front surface side of the drawing board 11 due to the fixed sheets 31 and 32.
Drawing work is performed in a state of being fixed to 8.

At this time, when the endless sheet 28 is manually pushed to the left or right, the endless sheet 28 slides around the drawing board 11 and the endless sheet 28. For example, when the dead space on the left side of the drawing sheet Z is to be drawn, the endless sheet 28 is pressed to the right side (in the direction of the arrow in FIG. 1) and moved to the right to draw the dead space of the drawing sheet Z. It is located near the center of the surface of the plate 11. As a result, in the conventional apparatus, the straightedge cannot be used, and the drawing work in the dead space, which was difficult to perform the drawing work, can be performed almost at the center of the drawing board 11, and the operability is remarkably improved.

When the drawing sheet Z currently being drawn is output to the CAD device 67, the operation button of the operation unit 63 is pushed down. As a result, in the scanner 41, the lamp 45 is turned on to irradiate the endless sheet 28 on the rear side of the drafting plate 11 located above the reading port 43, and the reflected light is passed through the mirrors 51a, 51b, 51c, the lens 55 and the like. CCD
An image is formed on the light receiving surface of the sensor 57. This reflected light is a CCD
The image data is converted by the sensor 57, the amplifier circuit 59, etc., and output to the CAD device 67 via the driver circuit 61.

The rotary rollers 25 and 26 are driven by the drive circuit 6.
The endless sheet 2 is rotatably driven by
8 moves in a moving direction (direction of arrow in FIG. 1) at a constant speed, that is, a speed at which the scanner 41 can read a figure on the drawing sheet Z. With the rotation of the endless sheet 28, the figure on the drawing sheet Z is sequentially positioned above the reading port 43 and sequentially read by the scanner 41, converted into image data, and output to the CAD device 67.

The endless sheet 28 rotates about half a turn, and the drawing board 1
When the endless sheet 28 exposed on the front surface side of 1 passes above the reading port 43, the drive circuit 65 stops and the image reading operation of the scanner 41 stops. As a result, all the figures drawn on the drafting sheet Z fixed on the front surface side of the endless sheet 28 are read, and the image data is output to the CAD device 67.

As described above, in this embodiment, since the drawing is automatically read by the scanner 41 by operating the operation section, the drawing written by the universal parallel ruler device or the like can be easily performed without removing it from the main body of the device. Can be read by a scanner.

Further, in this embodiment, since the endless sheet 28 to which the drawing paper is fixed can be manually moved to the left and right, the operability in drawing work is improved. Further, in the present embodiment, the dead space at the end of the drafting plate, which has been difficult to carry out in the related art, can be easily performed in this embodiment.

Further, since the scanner 41 is fixed to the back surface of the drawing board 11, it does not interfere with the drawing work.
In other words, since the scanner 41 is not attached to a member that supports the ruler movably (vertical rail, operation head, etc.), the weight of the vertical rail does not increase, and therefore, the drawing of the apparatus of this embodiment is made. The operation as a machine is easy.

FIG. 4 is a perspective view of a drafting data reader according to the second embodiment of the present invention. The same parts as those in the first embodiment are designated by the reference numerals, and the duplicated description will be omitted.

Guide rails 112 extending in the vertical direction are provided on both left and right edges of the drawing board 11. Horizontal rail 113
Is movably fixed to the guide rail 112 via the support member 72, and is movable in the vertical direction across the horizontal direction of the drawing board 11. Straight edges 123 are fixed to both sides of the horizontal rail 113.

The rotating rollers 25 and 26 are rotatably provided at the upper and lower ends of the drawing board 11, and the endless sheet 28 is provided.
Both ends are supported by the rotating rollers 25 and 26, and surround the upper and lower surfaces of the drawing board 11. The front side of the drawing board 11,
That is, the pencil receiver 71 is fixed to the lower edge portion.

The scanner 41 is fixed to the back surface of the drafting plate 11, and is arranged along the upper edge of the drafting plate 11 so as to cross the drafting plate 11 in the left-right direction. That is, the scanner 4
The first reading port is arranged so as to face the vicinity of the rotating roller 26. The scanner 41 and the drive circuit 6
5, and the configuration of the CAD device 67 is substantially the same as that of the first embodiment.

In the second embodiment thus constructed, when the operating portion (not shown) is operated, the endless sheet 28 moves upward (in the direction of the arrow in FIG. 4), and the drawing sheet Z The figures drawn in FIG. 3 are sequentially read by the scanner 41.

Therefore, also in the second embodiment, as in the first embodiment, the drafting paper can be easily read by the scanner without removing it from the drafting plate 11, and the operability in the drawing work is improved.

Further, in the second embodiment, for example, when the upper portion is worked, the endless sheet 28 is manually pulled to the front so that the work can be performed on the front side, and the work cannot be performed unless the conventional drafting paper is removed. The position drawing work can be easily performed without removing the drawing paper.

In the first and second embodiments, the scanner is fixed to the back side of the drawing board 11, but it may be fixed to any other position as long as it does not interfere with the drawing work. For example, it may be fixed to the right side of the rotary roller 26 of FIG.

Further, in each of the above-described embodiments, the operating portion 63 and the drive circuit 65 are constituted by members different from the drawing table, but the present invention is not limited to this, and they may be fixed to the drawing table or built in the scanner 41. It may be configured integrally.

[0039]

As described above, according to the present invention, it is possible to provide a drafting data reading device in which a drawing written by a universal parallel ruler device or the like can be easily read by a scanner and the operability in drawing work is remarkably improved. Can be provided.

[Brief description of drawings]

FIG. 1 is a perspective view of a drafting data reader according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view of the vicinity of the scanner of the drafting data reader of FIG.

FIG. 3 is a block diagram of the scanner of FIG.

FIG. 4 is a perspective view of a drafting data reader according to a second embodiment of the present invention.

[Explanation of symbols]

 11 Drawing Plate 25, 26 Rotating Roller 28 Endless Table 41 Scanner 43 Reading Port 45 Lamp 51a, 51b, 51c Mirror 57 CCD Sensor 61 Driver Circuit 63 Operating Unit 65 Drive Circuit 67 CAD Device Z Drawing Paper

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display location G06F 17/50 G06T 1/00 H04N 1/10 1/107 H04N 1/10

Claims (3)

[Claims] 1. An endless sheet that moves around the front and back of a drawing board in the left-right direction or in the up-and-down direction, drive means that drives this endless sheet in the moving direction, and the endless sheet on the back surface or side surface of the drawing board. And a scanner fixed to face the endless sheet and reading a figure drawn on the drawing sheet on the endless sheet. 2. The drive means includes a pair of rollers rotatably provided on the drawing board and supporting both ends of the endless sheet, and the scanner is arranged near one back surface of the roller. The drafting data reader according to claim 1, wherein: 3. A horizontal rail fixed to the upper edge of the drawing board,
A drafting data reader comprising a vertical rail that is movably connected to the horizontal rail and crosses the upper surface of the drafting plate, and an operation unit that is rotatably fixed to the vertical rail and that has rulers orthogonal to each other. An endless sheet that moves around the front and back of the drawing board in the left-right direction, a driving means that drives this endless sheet in the moving direction, and a back surface or a side surface of the drawing board, which is fixed so as to face the endless sheet, A drafting data reading device comprising: a scanner that reads a figure drawn on a drafting sheet on an endless sheet.