JPH0620639Y2 - Writing tool information detection device for automatic drafting machine - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a writing instrument type detection device for a multi-pen type automatic drafting machine, and in particular, information such as the type of writing instrument based on the information displayed on the writing instrument. The present invention relates to a writing tool information detection device for an automatic drafting machine, which optically reads the data and controls the head according to the information.

[Conventional technology]

This type of multi-pen type automatic drafting machine is disclosed in JP-A-59-2092.
No. 00, JP-A-59-87199, and JP-A-59-1.
The automatic drafting machine disclosed in Japanese Patent No. 76598, etc., displays information about the type on a recording pen, reads the above information of the selected recording pen with a reading device, and optimal recording conditions such as It is configured to set writing pressure, writing speed, and the like.

[Problems to be solved by the invention]

When reading information such as the type of recording pen with an optical reading device provided at a predetermined position, if the outside light such as direct sunlight or camera flash light enters the light receiving element of the reading device, the reading device malfunctions. If the recording conditions such as the writing pressure and the writing speed are set based on the malfunction output, the recording pen may be damaged during drawing. An object of the present invention is to prevent excessive external light from entering the reading device.

[Means for solving problems]

In order to achieve the above object, the present invention has a stocker that holds a plurality of writing instruments on which information about types and the like, and an imaging head that exchanges the writing instruments with each other and records on the screen. In an automatic drafting machine equipped with a reading device for optically reading information displayed on the writing instrument, a dark room 15 is provided on the table side so that the pen holder 12 of the drawing head can be inserted, and the reading device 40 is provided in the dark room 15. Is provided.

[Action]

In the above configuration, when the pen holder 12 of the drawing head 10 holds the writing tool, the calculator moves the drawing head 10 to move the drawing head 10 into the dark room 15. As a result, the information display surface of the writing tool held by the drawing head 10 closely faces the mark detection surface of the reading device. Light from the light emitting element of the reading device is applied to the mark displayed on the display surface of the writing instrument, and the reflected light is incident on the light receiving element of the reading device 40 to convert the mark on the display surface of the writing instrument into an electric signal. The reading device 40 outputs an electric signal indicating information such as the type of writing instrument. Since the reading work of the display surface of the writing instrument is performed in the dark room 15,
The reader 40 does not receive a large amount of direct sunlight or flash light, and the reader 40 operates correctly.

〔Example〕

Hereinafter, the configuration of the present invention will be described in detail with reference to the embodiments shown in the accompanying drawings.

In FIG. 1, 2 is a multi-pen type automatic drafting machine, a table 4
One end of the Y rail 6 is supported by an X rail disposed on one side of the Y rail 6, and one end of the Y rail 6 is linked to an X servo mechanism that moves the Y rail 6 in the X coordinate direction. Y rail 6
The other end is mounted on the table 4 via rollers to be freely movable. A cursor 8 is movably attached to the Y rail 6. A drawing head 10 is attached to the cursor 8. The cursor 8 is linked to a Y servo mechanism, and the X and Y servo mechanisms are controlled by a computer (not shown). The head 10
A pen holder 12 to be described later is provided in the. A known pen stocker 14 is provided on the other side of the table 4, and the pen stocker 14 is provided with a number of pen holders described later.

Reference numeral 15 denotes a dark room disposed adjacent to the pen stocker 14 on the side of the table 4, and an opening 15a for receiving the pen holder 12 of the drawing head 10 is formed on the side of the dark room 15 facing the table 4. Has been done. The pen holder 12 of the drawing head 10 is provided at the back end of the dark room 15.
The optical reading device 40 is arranged so that it can face the display surface 17a of the writing instrument 17 held by. The reading device 40 projects light of a light emitting element on a mark for displaying information such as the type of the writing instrument formed on the display surface 17a of the writing instrument 17, for example, a white mark for light reflection and a black mark for non-light reflection. The reflected light is received by a light-receiving element, the display surface 17a is read on the writing instrument 17, and a 2-bit digital decoding signal indicating the information of the writing instrument 17 is output to the computer. 3 and 4
In the figure, reference numeral 16 is a holding frame for the pen holder 12 of the head, and an upper holding piece 16a and a lower holding piece 16b are formed on the holding frame, and a groove for inserting the circular brim portion 18 of the writing instrument 17 in the Y direction is formed in the upper holding piece 16a. 20 are formed. The holding frame 16 is provided with a stopper surface 16c for locking the shaft of the writing instrument 17 perpendicularly to the surface of the table 4. A moving coil device (not shown), which is driven and controlled by a pen up / down signal of a computer, is fixed to the substrate of the head 10, and the output shaft of the moving coil device is vertically supported on the substrate by a lifting guide (not shown). Board 2
6 is fixed. The elevating plate 26 is located at the most raised position set by a return spring (not shown). Two
Reference numeral 8 denotes a swing arm that is rotatably supported by a shaft 30 in a plane parallel to the surface of the table 4 on the lift plate 26, and has a pen holding portion 28a having a concave curved surface formed on the inner surface thereof. .
The swing arm 28 is biased clockwise in FIG. 3 about the shaft 30. The holding frame 16 is fixed to the elevating plate 26. The holding frame 16 and the swing arm 28 form the pen holder 12. As shown in FIG. 3, the plurality of pen holders 32 on the pen stocker 14 side symmetrically face the pen holder 12. The pen holder 32 includes a holding frame 34 having the same structure as the holding frame 16 and a swing arm 36 having the same structure as the swing arm 28. The swing arm 36 is a mounting plate for the pen stocker 14. A shaft 30 'is rotatably supported by 36. The rear end of the swing arm 36 is engaged with a shaft 39, and the shaft 39 is connected to an output shaft of a solenoid (not shown) arranged in the stocker 14. The pen holder 32
In this embodiment, eight pen stockers are provided.

Next, the operation of this embodiment will be described.

First, the operation of holding the writing instrument 17 held by the pen holder 32 on the pen stocker 14 side on the pen holder 12 on the head 10 side will be described. The calculator is Y
The rail 6 is controlled to move in the X direction, the Y rail 6 is stopped when the head 10 faces the pen holder 32 of the predetermined pen stocker 14, and then the head 10 is moved along the Y rail to move the head 10 to the head 10. The pen holder 3 of the pen stocker 14 by bringing the pen holder 3 close to the predetermined pen holder 32.
The writing utensil 17 held by No. 2 is pushed between the holding frame 16 on the head 10 side and the swing arm 28. In this state, the writing instrument 17 is held by both the pen holder 12 on the head 10 side and the pen holder 32 on the stocker side. In this state, the lower part of the side surface of the shaft of the writing instrument 17 is the lower holding piece 1.
6b, the swing arm 28 makes elastic contact with the middle portion of the side surface of the writing instrument 17 such as the shaft portion, and the back surface of the shaft portion of the writing instrument 17 abuts on the stopper surface 16c, so that the writing instrument 17 is securely attached. And is held by the pen holder 12 on the head side. In this state, the solenoid to which the shaft 39 is connected is in a non-excited state, and the swing arm 36 on the stocker side 14 is not in strong elastic contact with the side surface of the shaft of the writing instrument 17, but is in simple contact therewith.
Next, the computer moves the head 10 from the pen stocker 14 to Y.
When the writing instrument 17 is moved along the Y rail 6 in the direction away from the direction, the writing instrument 17 moves the pen holder 3 of the pen stocker 14.
2 and is held only by the pen holder 12 of the head 10. On the contrary, in order to transfer the writing instrument 17 held by the pen holder 12 of the head 10 to the empty pen holder 32 on the pen stocker 14 side, the head 10 is moved close to the empty pen holder 32 along the Y direction by the computer control. , Push the writing instrument 17 between the holding frame 34 of the pen holder 32 and the swing arm 36, then energize the solenoid,
The shaft body 39 is driven to the left in FIG. 3, and the swing arm 36 is biased in the clockwise direction in FIG. 3 to hold the holding frame 34 and the swing arm 36.
If the writing instrument 17 is locked in the meantime, and then the head 10 is moved in a direction away from the pen stocker 14 in the Y direction, the writing instrument 17 will move to the pen holder 12 of the head 10.
Comes off against the elasticity of the swing arm 28, and the pen stocker 1
It is held only on the 4 side pen holder. When the lifting plate 26 on the head 10 side is in the maximum rising setting position by the biasing force of the return spring (not shown), the holding frame 1 of the pen holder 12 is held.
The height of the groove 20 of 6 corresponds to the height of the groove (not shown) of the holding frame 34 of the pen holder 32 corresponding to the pen stocker 14 side. When the head 10 holds the writing instrument 17, the calculator then moves the head 10 in the dark room 15 direction to position the pen holder 12 of the head 10 in the dark room 15, and reads the display surface 17a of the writing instrument 17 held by the pen holder 12. It faces the detection surface of the device 40. The calculator then activates the reader 40. The reading device 40 detects the information of the writing instrument 17, for example, a signal indicating the type, and outputs it. The computer returns the head 10 to a predetermined position and determines the type of the writing instrument 17 based on the output of the reading device 40. Based on the determination signal, the computer determines the type of the writing instrument stored in the storage device. The driving unit of the moving coil device that reads out the recording conditions corresponding to the determination signal from the optimum recording conditions such as the writing pressure and the speed, and moves up and down the X and Y servo mechanism and the lift plate 26, that is, moves up and down the writing implement 17. Set the above recording conditions to. The driving unit of the moving coil device supplies a current according to the set writing pressure to the coil of the moving coil device,
By energizing the coil, the tip of the writing instrument 17 comes into contact with the drawing with the set writing pressure.

The information displayed on the display surface 17a of the writing instrument is not particularly limited to the type of the writing instrument.

〔effect〕

As described above, according to the present invention, the dark room is provided on the table side, and the information of the writing instrument is optically read in the dark room.
There is an effect that the reading device can be operated accurately without the outside light entering the light receiving portion of the reading device.

[Brief description of drawings]

1 is a plan view, FIG. 2 is an external view, FIG. 3 is a plan view, FIG. 4 is a side view, FIG. 5 is an explanatory plan view, and FIG. 6 is an explanatory side view. 2 ... Automatic drafting machine, 4 ... Table, 6 ... Y-rail,
10 …… Drawing head, 12 …… Pen holder, 14 ……
Penstocker, 15 ... Dark room, 15a ... Opening, 1
7 ... Writing instrument, 40 ... Reading device, 16 ... Holding frame, 2
0 ... Groove, 26 ... Lift plate, 28 ... Swing arm, 34 ...
Holding frame, 36 ... Swing arm

Continuation of front page (51) Int.Cl. ⁵ Identification number Office reference number FI technical display location G06F 15/62 380 9287-5L

Claims (1)

[Scope of utility model registration request] 1. A stocker for holding a plurality of writing instruments on which information about types and the like is written, a drawing head for exchanging the writing instruments with each other and recording on the writing screen, and a display on the writing instrument. In the automatic drafting machine provided with a reading device for optically reading the recorded information, a dark room 15 is provided on the table side so that the pen holder 12 of the drawing head can be inserted, and the reading device 40 is provided in the dark room 15.
A writing instrument information detection device, wherein: