JPH11192798A - Automatic plotting machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an automatic plotting machine capable of maintaining a writing pressure and a pen rising amount constant irrespective of its movement in a Y direction. SOLUTION: In the automatic plotting machine comprising a pen moving member 20 for holding a pen T and movable in an X-Y direction to a paper surface, and a solenoid for vertically moving an end side of the member 20 to bring a pen nib Ta into contact with the paper surface or to separate it from the surface; the member 20 has a base 30 movable in the X-Y direction, and a pen arm member 21 movably provided around a shaft 38 at the base 30 to hold the pen T. In this case, the member 21 is rotated around the shaft 38 by the solenoid to vertically move an end side of the member 21.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to automatic drawing in which a pen moving member is moved in the X and Y directions based on drawing information and a tip of a pen moving member equipped with drawing means is moved up and down. About the machine.

[0002]

2. Description of the Related Art Conventionally, a main body having a keyboard for inputting drawing information, a pen moving member protruding from the main body and movable in XY directions on a paper surface, and the pen moving member based on the drawing information. There is known an automatic drawing machine having a control device for controlling the movement in the XY directions (see Japanese Utility Model Laid-Open No. 3-47916).

As shown in FIG. 22, the pen moving member 1 of such an automatic drawing machine moves along an X-axis rail 2, and moves in the Y direction together with the X-axis rail 2. A pen 3 is detachably attached to the tip of the pen moving member 1. Below the pen moving member 1, a pen lifting lever 4 is provided.
Is rotated about the shaft 5 by a solenoid (not shown), thereby rotating the pen moving member 1 around the X-axis rail 2 and moving the pen 3 up and down.

[0004]

However, in this automatic drawing machine, the shaft 5 of the pen lifting lever 4 is connected to the main body.
(Not shown), the pen moving member 1
When the pen 3 moves in the direction, the distance L between the X-axis rail 2 and the shaft 5 of the pen lifting lever 4 changes, and the speed at which the pen 3 moves up and down changes. In particular, when the distance L is small, the impact when the pen 3 lands is large,
However, there was a problem that it rose higher than necessary. Further, there is a problem that the pen moving member 1 is rubbed by the lever portion 4A of the pen lifting lever 4 every time the pen moving member 1 moves in the XY directions.

The automatic drawing machine of the present invention has been made in view of such a problem, and it is possible to prevent the impact at the time of landing of the writing implement from being increased irrespective of the movement in the Y direction, and to raise the writing implement. It is an object of the present invention to provide an automatic drawing machine which can keep a moving amount constant and does not cause a problem of rubbing of a pen moving member.

[0006]

In order to achieve the above object, the present invention provides a pen moving member which holds a drawing means and is movable in the XY directions on a sheet of paper, and a pen moving member. An automatic drawing machine having a vertical drive mechanism for moving the tip side of the member up and down to abut the drawing means on the paper surface or separating the drawing means from the paper surface, wherein the pen moving member is A base member movable in the X and Y directions, and a pen arm member provided on the base member so as to be movable around a horizontal axis and holding the drawing means, and the pen arm member is moved around the horizontal axis by the vertical movement drive mechanism. The tip side of the pen arm member is moved up and down by being rotated.

The automatic drawing machine according to a second aspect of the present invention is the automatic drawing machine according to the first aspect, wherein the vertical movement driving mechanism comprises a pair of fixed pulleys pivotally supported by the base member, between the fixed pulleys. A moving pulley that is positioned below and provided at the rear of the pen arm member, a wire that is bridged between the fixed pulley and the moving pulley and that has one end fixed to the main body, and the other end of the wire And a rotation driving means for pulling to rotate the pen arm member about a horizontal axis.

The automatic drawing machine according to a third aspect of the present invention is the automatic drawing machine according to the second aspect, further comprising an urging member that rotationally urges the pen arm member such that the drawing means moves in a direction away from the paper surface. It is characterized by having been provided.

According to a fourth aspect of the present invention, there is provided the automatic drawing machine according to any one of the first to third aspects, wherein the pen arm member is attached to a horizontal axis of the base member so as to be vertically movable. A drawing means fixing portion for detachably supporting the drawing means, and a pivotally supported vertically movable together with the drawing means fixing portion on the horizontal shaft, and for restricting downward rotation of the drawing means fixing portion. A rotating member that supports the drawing means fixing portion so as to allow upward rotation, and receives a driving force for vertical movement from the vertical movement driving mechanism; and the rotating member and the drawing means fixing portion And a pen pressure switching means for switching between restriction and allowance of upward movement of the drawing means fixing portion.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an automatic drawing machine according to the present invention will be described below with reference to the drawings.

FIG. 1 shows an external view of an automatic drawing machine 10. Reference numeral 11 denotes a main body case, and a plurality of operation keys (input means) for inputting drawing information are provided on the upper surface of the main body case 11.
An operation unit 13 provided with a display unit 12 and a display unit 14 for displaying input drawing information are provided.

A rectangular opening (not shown) is formed in the front side surface 11A of the main body case 11, and a pen arm 22 (drawing means fixing member) of the pen moving member 20 projects from this opening. A pen T as an example of a drawing unit can be detachably attached to the tip of the pen arm 22. In addition, as a drawing means here, a lot ring pen, a pencil, a mechanical pencil, which is drawn with ink,
Examples thereof include a cutter knife whose tip is rotatable about an axis perpendicular to the paper surface and cuts a sheet or the like, and a water / oil ballpoint pen. The pen arm 22 is movable in the X direction along the opening together with the pen moving member 20,
In addition, it can move forward and backward so that it can move in the Y direction.

In the main body case 11, a constant writing pressure is applied to the stepping motors S1 and S2, a solenoid (rotation driving means) 17 for raising and lowering the tip side of the pen arm 22, and a pen tip Ta of the pen T. A control mechanism (not shown) for controlling the stepping motors S1 and S2 and the solenoid 15 and for displaying the drawing information on the display unit 14, An XY guide rail (not shown) for moving the pen moving member 20 in the XY directions is provided.

As an example of the XY guide rail, a pair of X-axis guide rails are arranged on the main body case 11 so as to extend in the X direction (the left-right direction in FIG. 1), and the Y-axis is orthogonal to the X-axis guide rail. The guide rail is arranged to be slidable in the X-axis direction. A slider (not shown) is provided on the Y-axis guide rail so as to be movable in the Y-axis direction, and a pen moving member 20 is attached to the slider. Y
The movement amount of the axis guide rail in the X-axis direction is controlled by a stepping motor S1, and the movement amount of the slider in the Y-axis direction is controlled by a stepping motor S2.

As shown in FIGS. 2 to 5, the pen moving member 20 is mounted on the base 3 so as to move in the XY directions along the XY guide rail.
0 (base member), a pen arm member 21 rotatably attached to the base 30, and a pivot member rotatably attached to a shaft 38 of the base 30 to form a part of the pen arm 21. 40.

As shown in FIG. 6, the base table 30 has a horizontal plate portion 32, and a vertical plate portion 33 is provided beside the horizontal plate portion 32.
Is formed below the rear portion of the vertical plate portion 33. A projection 33A is provided to project downward. Arm plate portions 34, 34 extending forward are formed on both sides of the tip of the horizontal plate portion 32, and bearing portions 35, 35 are formed on the arm plate portions 34, 34. A shaft 38 is attached to the bearings 35. A long plate portion 36 extending rearward is formed at the rear end of the horizontal plate portion 32. Arm plate 3
A shaft 38 as a horizontal shaft is attached to the distal end of each of the shafts 4 and 34. The pivot member 40 and the pen arm 22 are
The pen arm member 21 is pivotally supported, and the rotating member 4
Both 0 and pen arm 22 are rotatable about a shaft 38.

The horizontal plate 32 has rollers R1 to R4 (FIG. 3).
The vertical plate portion 32 is provided with a pair of rollers (fixed pulleys) R5 and R6 (see FIG. 2) so as to be rotatable.

Wires (not shown) are wound around the rollers R1 to R4, and the stepping motors S1 and S2 move the base 30 along the XY guide rails via the wires. For example, endless wires for the X-axis and the Y-axis are wrapped between the pulleys of the output shafts of the stepping motors S1 and S2 and the corresponding pulleys of the case body, respectively, and the X-axis rollers (for example, R1, R2), Y-axis rollers (eg, R3, R4)
And the base member 30 is moved in the X and Y directions by the feed amount of the stepping motors S1 and S2. The detailed configuration of the XY drive mechanism is the same as that of the XY drive mechanism using a conventional wire, and a detailed description thereof will be omitted.

The rotating member 40 is provided with a shaft 38 shown in FIGS.
It is pivoted on. As shown in FIG.
The rotating member 40 that supports from below has a flat plate-shaped pressing plate portion 41. At the tip of the push plate portion 41, a plate-like protrusion portion 41A projecting forward is formed, and on both sides of the push plate portion 41, the side plate portions 4 are provided.
2,43 are continuously formed. Protrusions 42A, 43A are provided at the distal ends of the side plates 42, 43 at positions below the protrusions 41A so as to protrude forward. The protrusions 42A and 43A support the lower surface of the pen arm 22. Bearing portions 42B, 43B are formed at the lower portion on the rear side of the side plate portions 42, 43, and these bearing portions 42B, 43B are formed.
B is the shaft 3 attached to the bearing portions 35 of the base 30.
8, the rotation member 40 is rotatable about the shaft 38 with respect to the base table 30.

A holding plate portion 44 extending rearward is continuously formed on the side plate portion 43, and a rear portion of the holding plate portion 44 is provided between the rollers R5 and R6 and below the roller (moving roller). Pulley) R7 (see FIG. 2) is rotatably held. A projection 45 projecting upward is provided at the rear end of the holding plate portion 44.
Is provided. Then, the protrusion 45 and the base 3
A spring 46 (see FIG. 2) is held between the protrusion 33A and the rotation member 40 by the spring 46 so that the rotating member 40 is rotated clockwise (in FIG. 2) around the shaft 38 with respect to the base 30. It is being rushed. And the roller R
5, R6, roller R7, wire W, and solenoid 17 constitute a vertical drive mechanism for rotating pen arm member 21 about axis 38.

One end of the wire W is connected to an adjusting mechanism 50 described later. The other end of the wire W is connected to the solenoid 17 via a pulley (not shown) provided at the end of the Y-axis guide rail on the pen arm 22 side.

As shown in FIG. 8, the pen arm member 21 has a pen arm 22 as a drawing means fixing portion, and a pen holding portion 22A for detachably mounting a pen is formed at the tip of the pen arm 22. ing. A pen pressure switching member 23 is attached to the pen arm 22 as a pen pressure switching means movable in the front-rear direction. The pen pressure switching member 23 is slidably held by a guide unit (not shown). Reference numeral 23A in FIG. 2 denotes a knob for moving the writing pressure switching member 23 back and forth.

At the rear end of the pen arm 22, a flat plate portion 24 is formed continuously. A rectangular hole 25 is formed in the flat plate portion 24, and a concave portion 25 </ b> A that is recessed forward is formed at the front end of the hole 25. In this hole 25, FIGS.
As shown in FIG. 5, the push plate portion 41 of the rotating member 40 that forms a part of the pen arm member 21 is inserted, and the protrusions 42A and 43A of the rotating member 40 are on the front side of the flat plate portion 24 of the pen arm member 21. Is in contact with the lower surface. Rotating member 4
Reference numeral 0 denotes a rotation about the shaft 38. Also, the protrusion 41A of the rotating member 40 is
It is located above 5A. The recess 25A is set to be larger than the size of the protrusion 41A of the rotating member 40.

On both sides of the flat plate portion 24, side plate portions 26, 26 protruding downward are continuously formed, and these side plate portions 26, 26 are formed.
Is supported by a shaft 38 held by the base table 30,
The arm member 21 is rotatable about the shaft 38. A projecting portion 27 projecting rearward is formed at a rear portion of the flat plate portion 24, and a spring 29 for adjusting writing pressure is provided between the projecting portion 27 and the Y-axis guide member 28 provided on the base 30. Have been. This spring 29
Accordingly, the pen arm member 21 is urged counterclockwise (in FIG. 2) about the shaft 38. Spring 2
The urging force of No. 9 is set to be smaller than the urging force of the spring 46, and is adjusted so that the pen pressure of the pen tip Ta held by the pen arm 22 becomes appropriate.

On the other hand, a wire W having one end connected to the rod 17A of the solenoid 17 is wound around rollers R5 to R7 as shown in FIGS. The other end of the wire W is connected to the adjustment mechanism 50 by winding a roller (not shown) provided at the rear end. When the rod 17A of the solenoid 17 retreats from the position shown in FIG. 10, the wire W is pulled in the direction of the arrow Q1 and the roller R7 is pulled upward, whereby the rotating member 40 resists the urging force of the spring 46. Then, it rotates counterclockwise about the shaft 38.

As shown in FIG. 9, the adjusting mechanism 50 includes a cylindrical member 52 fixed in the main body case 11 via a supporting member 51, and a cylindrical member slidably inserted into the cylindrical member 52. And a cylindrical member 52
52A formed around the outer periphery of the piston and the piston member 5
A spring 54 is provided between the rear portion 3 and a flange 53A formed on the outer periphery of the rear portion, and the piston 54 is urged rightward (in FIG. 9) by the spring 54. The urging force of the spring 54 is the spring 4
6 is set larger than the urging force. Piston member 5
A stopper 55 is fixed to the distal end side of 3, and the stopper 55 contacts the distal end of the tubular member 52, and the piston member 53 is stopped at the position shown in FIG. 9.

The rear end of the piston member 53 is open and the front end 53B is closed, and a rod 57 is slidably disposed in a hole 56 of the piston member 53. A flange 58 is formed at a rear portion of the rod 57, and a spring 59 is provided between the flange 58 and a step 56 </ b> A of the hole 56.
7 is urged rearward (to the right in FIG. 9). The urging force of the spring 59 is set smaller than the urging force of the spring 54.

A small hole 60 communicating with the hole 56 is formed at the distal end 53 B of the piston member 53.
Are formed with small holes 61 penetrating in the axial direction. A wire W is passed through these small holes 60, 61, and a ball member 62 is connected to the other end of the wire W. This ball member 6
2 has a diameter larger than the diameter of the small hole 61, and is in contact with the rear surface 57A of the rod 57. The rod 57 is a spring 59
The wire 59 is pulled in the direction of the arrow Q2 by the urging force of the above, and the spring 59 prevents the wire W from loosening.

The piston member 53, the rod 57, and the base 3
FIG. 10 schematically shows a mounting relationship between the rotation member 40, the rotating member 40, the pen arm member 21, and the like.

Next, the operation of the above embodiment will be described.

First, the pen arm 2 of the pen arm member 21
A case in which a drawing is performed by attaching the pen T to 2 will be described.

The pen pressure switching member 23 of the pen arm 22 is slid from the solid line position shown in FIG. 3 to the one-dot chain line position, so that the protrusion 41A and the protrusions 42A, 4
The pen pressure switching member 23 is inserted between the flat portion 3A and the flat portion. As a result, the pen T can be rotated integrally with the rotating member 40. Then, the user operates the operation keys 12 to input characters and symbols to be drawn, and operates the drawing execution key.

By operating the drawing execution key, the stepping motors S1 and S2 are controlled, and the pen moving member 20 is moved in the X and Y directions so that the pen T moves to the drawing start position. When the pen T is moved to the drawing start position, the solenoid 17 operates and the rod 17A moves backward. Rod 1
7, the wire W is pulled in the direction of the arrow Q1 (see FIG. 10), the roller R7 is pulled upward, and the rotating member 40 is rotated by the shaft 38 against the elastic urging force of the spring 46. 10, and the compression input is applied to the springs 54 and 57. The pen arm member 21 rotates counterclockwise about the shaft 38 together with the rotation of the rotation member 40 in the counterclockwise direction.

When the pen arm 22 is rotated by a predetermined amount, the pen point Ta comes into contact with the sheet F in FIG. 10, the rotation of the rotation member 40 is stopped, and the amount of extension of the spring 29 and the amount of compression of the spring 46 become constant. . When the rod 17A further moves backward, the piston member 53 moves leftward against the urging force of the spring 54. When the rod 17A retreats to a predetermined position and stops, the piston member 53 of the adjusting mechanism 50 resists the urging force of the spring 54 as shown in FIG.
To the position shown by the broken line.

The wire W is urged by the spring 54 in the direction of arrow Q2 by the movement of the piston member 53 due to the pulling force of the rod 17A. At both ends of the wire W, the tensile force of the rod 17A and the springs 29, 46, 54, 5
A resilience of 7 acts. The springs 46, 54 and 57 are compressed by the tensile force of the rod 17A, and the spring 29 is extended. The urging forces of the springs 29 and 46 become constant due to the stop of the rotation of the rotation member 40. Rod 17
The springs 54 and 57 are compressed by the tensile force of A, but the elasticity of the spring 57 is small.
The tensile force of the rod 17A acts mainly on the wire W located between A and the spring 54 while being relaxed by the resilience of the spring 54, and this force is applied to the paper surface F as pen pressure. When the pen moving member 20 moves in the X and Y directions, the drawing is performed by the pencil T.

When the operation of the solenoid 17 is stopped, the rotating member 40 is rotated clockwise by the urging force of the springs 46 and 54. Since the projections 42A and 43A of the rotating member 40 support the lower surface of the flat plate portion 24 of the pen arm member 21, the pen arm 22 rotates clockwise with the clockwise rotation of the rotating member 40 and the initial state. It will return quickly to the position (the position shown in FIG. 10).

As shown in FIG. 1, the wire W extends from the rod 17A at right angles to the Y-axis guide rail, and then extends parallel to the Y-axis guide rail.
Since the wire W extends toward the adjusting mechanism 50 and is entirely spanned in a crank shape, the amount of pulling of the wire W due to the reciprocation of the rod 17A of the solenoid 17 regardless of the moving position of the pen moving member 20 in the XY directions. Since they are the same, the amount of upward movement of the roller R7 is always constant. For this reason, the writing pressure is always constant regardless of the moving position of the pen moving member 20. Further, since the pen T moves up and down by rotating the pen arm member 21 about the shaft 38, a pen lifting lever is not required unlike the conventional case.
Therefore, there is no problem that the pen arm 22 is rubbed by the pen lifting lever every time the pen moving member 20 moves in the Y direction.

Since the pen arm member 21 rotates around the shaft 38, the Y of the pen moving member 20
The rising movement amount of the pen T is always constant irrespective of the moving position in the direction, and there is no problem that the pen T rises higher than necessary as in the related art. Further, when the pen arm member 21 rotates about the shaft 38,
Irrespective of the movement in the direction, the impact at the time of landing of the pen T can be made constant, so that the impact can be prevented from increasing.

Next, the pen arm 2 of the pen arm member 21
A case in which an ink pen (not shown) is attached to 2 for drawing will be described.

FIG. 3 shows the pen pressure switching member 23 of the pen arm 22.
To the position indicated by the solid line. Then, in the same manner as described above, characters, symbols, and the like are input, and the drawing execution key is operated.
Then, the ink pen is moved to the drawing start position, and the rod 17A of the solenoid 17 retreats in the same manner as described above.
The wire W is pulled in the direction of arrow Q1, and the roller R7
Is lifted upward, and the rotating member 40 rotates counterclockwise in FIG. 2 around the shaft 38 against the urging force of the spring 46. The pen arm member 21 rotates counterclockwise about the shaft 38 together with the rotation of the rotation member 40 in the counterclockwise direction.

When the pen tip of the ink pen comes into contact with the paper surface F due to the rotation of the pen arm member 21, the pen pressure switching member 23 is returned to the solid line position shown in FIG. Is the concave portion 25 of the pen arm member 21
Get inside A. For this reason, the pen arm member 21
Stops, and only the rotating member 40 rotates. When the rod 17A of the solenoid 17 retreats to a predetermined position and stops, the piston member 53 of the adjusting mechanism 50 moves to the position shown by the broken line against the urging force of the spring 54.

By the movement of the piston member 53, the wire W is urged in the direction of arrow Q2 by the spring 54, but the projection 41A of the rotating member 40 is
Since the spring 5 has entered the recess 25A of the
4 is applied to the pen arm member 21 via the rotating member 40.
Does not participate. Therefore, only the weight of the ink pen becomes pen pressure.

As described above, by sliding the pen pressure switching member 23, the pen pressure can be changed in accordance with the type of the drawing means, so that it is very easy to use.

11 to 21 show another example of the pen pressure switching means. As shown in FIG.
A pen pressure switching member 71 provided on the pen arm 70, and the pen pressure switching member 71 is connected to the opening edge 72 of the pen arm 70 and the rotating member 7.
It is schematically constituted by a lever 75 for entering and exiting between the third projection 74 and a guide plate 76 for guiding the pen pressure switching member 71 to enter and exit.

As shown in FIGS. 13 to 15, the pen arm 70 has a screw hole 77 at its tip for screwing in a writing instrument such as a lot ring pen or a pencil holder (not shown). An opening 78 is provided on the 70A side for disposing the rotating member 73. A recess 79 is formed in the opening 78. An opening 81 is formed in the center of the pen arm 70 for disposing the shaft 80 of the writing pressure switching member 71. On both sides of the opening 78 of the pen arm 70, side plates 82 and 83 to which the shaft 38 is attached are formed by bending. The shafts 38 are attached to the side plates 82 and 83.
The bearing hole 84 into which the is inserted is opened. A screw hole 85 for fixing the guide plate 76 is formed near the base 70A of the pen arm 70, and a mounting hole 86 for mounting the lever 75 near the screw hole 77 of the pen arm 70.
Are formed. A projection 87 that receives the spring 29 is formed on the base 70A of the pen arm 70.

As shown in FIG.
As shown in FIG. 7, a bearing hole 89 into which the rotating shaft 88 of the lever 75 is inserted is formed. The pen pressure switching member 71 is bent in a crank shape from the shaft portion 80, and the shaft portion 80 moves inside the opening 81, and the pen pressure switching member 71 slides on the upper surface of the base 70A of the pen arm 70. . The end of the writing pressure switching member 71 is a concave portion 90 cut out in an arc shape, and the edge 91 of the concave portion 90 is between the projection 74 of the rotating member 73 and the edge of the concave portion 79 of the opening 78. In and out of Elongated rectangular holes 92 and 93 are formed in the center of the pen pressure switching member 71. The flexible tongue piece 94 of the guide member 76 shown in FIG. 18 enters the rectangular holes 92 and 93 to provide a moderation for stopping the sliding of the writing pressure switching member 71. A pair of stopper pieces 96 which are set to protrude outward from the rectangular holes 95 of the guide member 76 are formed on the left and right sides of the writing pressure switching member 71.
The stopper pieces 96, 96 prevent the writing pressure switching member 71 from coming off the guide member 76, and also determine the sliding area of the writing pressure switching member 71.

The pivoting member 73 has a projection 73A for supporting the pen arm 70 from below, similarly to the aforementioned pivoting member 41,
73A, and is rotatable up and down around the shaft 38. When the edge 91 of the pen pressure switching member 71 enters between the protrusion 74 of the rotary member 73 and the edge 72 of the pen arm 70. Then, the downward movement of the rotating member 73 (the back side of the paper in FIGS. 11 and 12) is transmitted to the pen arm 70. For other configurations, the description of the above-described rotating member 73 is cited.

The lever 75 is mounted by fixing a rotating shaft 88 to a mounting hole 86 of the pen arm 70. A connecting rod 75A is integrally fixed to the lower surface of the lever 75, and the connecting rod 75A is connected to a bearing hole 89 of the writing pressure switching member 71 via a connecting pin 97. A screw 99 for maintaining the rotation angle of the lever 75 is screwed into the rotation end 98 of the lever 75. The screw 99 comes into contact with the arc portion 100 of the pen arm 70 by screwing, and the rotation of the lever 75 is performed. The motion stop angle is maintained.

The guide member 76 has a convex cross-sectional shape as shown in FIGS.
0, and a guide portion 102 for guiding the writing pressure switching member 71. The above-described rectangular hole 95 extends from the base 101 to the tongue piece portion 94 beyond the guide portion 102. Is formed up to the top plate portion 103 where. A positioning plate 104 is formed below both sides of the base 101. Mounting holes 105 for screwing to the pen arm 70 are formed in the base 101, respectively.

According to this writing pressure switching means, as shown in FIG. 11, when the lever 75 is moved closer to the rotating member 73, the edge 91 of the writing pressure switching member 71
And between the edge 79A of the recess 79 of the pen arm 70 (see FIG. 13), the rotation of the rotation member 73 is transmitted to the pen arm 70, and the necessary writing pressure is applied to the writing implement. When the lever 75 is moved away from the rotating member 71 as shown in FIG.
3 and the edge 79 of the recess 79 of the pen arm 70
A (see FIG. 13), even if the rotating member 71 rotates, the rotational power is not transmitted to the pen arm 70, and the weight of the writing instrument becomes the writing pressure. Since the tongue piece 94 enters the rectangular holes 92 and 93 when the lever 75 is rotated,
Moderation occurs in the sliding of the writing pressure switching member 71, and the tip of the screw 99 can be fixed to the arc portion 100 of the pen arm 70 by the rotation of the screw 99. Therefore, even if the fixing force between the tongue piece 94 and the rectangular hole 92 is weak, the pen arm 70 is
During drawing while moving in the direction of
Can be prevented from falling out from between the protrusion 74 and the edge 79A of the pen arm 70 to make drawing impossible. Lever 7
11 can be returned from the state shown in FIG. 11 to the state shown in FIG.
Then, the lever 75 is returned to the position shown in FIG.
At this time, the stopper piece 96 is connected to the lever 75 of the rectangular hole 95.
And the pen pressure switching member 71 is in contact with the guide member 7.
6 can be prevented from falling off.

[0051]

As described above, according to the first and second aspects of the present invention, the pen moving member can be moved around the horizontal axis by the base member movable in the X and Y directions. And a pen arm for holding the drawing means.
Irrespective of the movement in the direction, it is possible to prevent the impact at the time of landing of the drawing means from increasing, and to make the rising movement amount of the drawing means constant. In addition, since the pen arm rotates about the horizontal axis, the drawing means moves up and down, so that a pen lifting lever is not required unlike the related art. Therefore, there is no problem that the pen arm is rubbed by the pen lifting lever every time the pen moving member moves in the Y direction.

According to the third aspect of the present invention, since the urging member for urging the pen arm to rotate so that the drawing means moves away from the paper surface is provided, the operation of the vertical movement driving means is provided. After stopping, the pen arm can be quickly returned to the original position by the urging member.

According to the fourth aspect of the present invention, the pen arm member is composed of the drawing means fixing portion and the rotating member, and one of the drawing means fixing portion and the rotating member is provided with the pen pressure switching means. By means of the writing pressure switching means, the drawing means fixing portion can directly receive the turning power of the rotating member, can freely rotate, and can be switched, and can easily switch the appropriate writing pressure to the drawing means. . Therefore, various drawing means such as a lot ring pen, a pencil, an ink pen, and a cutter knife can be attached to the drawing means fixing portion.

[Brief description of the drawings]

FIG. 1 is a plan view showing the appearance of an automatic drawing machine according to the present invention.

FIG. 2 is a side view showing a pen moving member of the automatic drawing machine shown in FIG. 1;

FIG. 3 is a plan view showing a pen moving member.

FIG. 4 is a cross-sectional view illustrating a configuration of a pen moving member.

FIG. 5 is a cross-sectional view illustrating a configuration of a pen moving member.

FIG. 6A is a plan view showing a base table of a pen moving member. (B) It is the side view which showed the base stand.

FIG. 7A is a plan view showing a rotating member of a pen moving member. (B) It is the side view which showed the rotation member.

FIG. 8A is a plan view showing a pen arm member. (B) It is the side view which showed the pen arm member.

FIG. 9 is a cross-sectional view illustrating a configuration of an adjustment mechanism.

FIG. 10 is a conceptual diagram schematically showing a mounting relationship of each member.

FIG. 11 is a plan view showing a state in which a pen pressure switching member is inserted between a pen arm and a rotating member according to another configuration of the pen pressure switching means.

FIG. 12 is a plan view of another configuration of the pen pressure switching unit with the pen pressure switching member removed from between the pen arm and the rotating member.

FIG. 13 is a plan view of the pen arm shown in FIGS. 11 and 12;

FIG. 14 is a side view of the pen arm of FIG. 13;

FIG. 15 is a view of the pen arm of FIG. 13 as viewed from a rotating member side.

FIG. 16 is a plan view of the pen pressure switching member of FIGS. 11 and 12;

FIG. 17 is a side view of the pen pressure switching member according to FIG. 16;

FIG. 18 is a plan view of a guide member of the pen pressure switching means according to FIGS. 11 and 12;

19 is a view of the guide member of FIG. 18 as viewed from the pen pressure switching member side.

FIG. 20 is a side view of the guide member of FIG.

FIG. 21 is a perspective view showing a combined state of the pen arm, the turning member, and the pen pressure switching means according to FIGS. 11 and 12;

FIG. 22 is an explanatory diagram showing a configuration of a conventional pen moving member.

[Explanation of symbols]

 Reference Signs List 17 solenoid (rotating drive means) 20 pen moving member 21 pen arm member 22 pen arm (drawing means fixing part) 23 writing pressure switching member 30 base table 38 axis (horizontal axis) 40 turning member 70 pen arm (drawing means fixing part) 71 Pen pressure switching member T pen (plotting means)

Claims (4)

[Claims] 1. An XY device which holds a drawing means and
A pen moving member that can move in the direction, and a vertical movement driving mechanism that moves the tip end side of the pen moving member up and down to contact the drawing unit with the paper surface and to separate the drawing unit from the paper surface. An automatic drawing machine, wherein the pen moving member includes a base member movable in XY directions, and a pen arm member provided on the base member so as to be movable about a horizontal axis and holding the drawing means, An automatic drawing machine characterized in that a tip end side of a pen arm member is moved up and down by rotating a pen arm member around a horizontal axis by the vertical movement drive mechanism. 2. The vertical movement drive mechanism includes a pair of fixed pulleys pivotally supported by the base member, and a movement provided between and below the fixed pulleys and provided at a rear portion of the pen arm member. A pulley, a wire that is wound around the fixed pulley and the moving pulley, and one end of which is fixed to the main body,
2. The automatic drawing machine according to claim 1, further comprising a rotation drive unit configured to pull the other end of the wire to rotate the pen arm member about a horizontal axis. 3. The automatic drawing machine according to claim 2, further comprising an urging member for urging the pen arm member to rotate so that the drawing means moves in a direction away from the paper surface. 4. A drawing means fixing portion which is attached to a horizontal axis of the base member so as to be vertically movable and which detachably supports the drawing means, and a pen arm member which is vertically attached to the horizontal axis together with the drawing means fixing portion. The drawing means fixing portion is supported movably and supports the drawing means fixing portion so as to restrict the downward turning of the drawing means fixing portion while allowing the turning portion to move upward. A rotating member for receiving a driving force for vertical movement; and a pen pressure switch provided on one of the rotating member and the drawing means fixing portion for switching between restriction and allowance of upward movement of the drawing means fixing portion. The automatic drawing machine according to any one of claims 1 to 3, further comprising: means.