JP2544102Y2 - Y-axis guide support mechanism for automatic imager - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION In the present invention, a pen arm protrudes from the front of a casing, and a Y-axis guide is supported in an automatic drawing device for drawing characters, figures, etc. at an arbitrary position on a drawing screen by a pen supported by the pen arm. Regarding the mechanism.

[0002]

2. Description of the Related Art A support mechanism for a Y-axis guide 1 in a conventional automatic image forming device of this type shown in FIG. 11 includes guide rollers 4 rotatably supported by a front cursor portion 2 and a rear cursor portion 3, respectively. The curved surfaces of 5, 6 and 7 abut against the X-axis front rail 8 and the X-axis rear rail 9, and the guide rollers 4, 5 and 6, 7 regulate the movement of the Y-axis guide 1 in the longitudinal direction, that is, in the front-back direction. Was.

As another configuration, a Y-axis guide 1 is movably connected to an X-axis front rail 8 and an X-axis rear rail 9 by using a bush or the like instead of a guide roller. In FIG. 11, reference numeral 10 denotes a Y cursor movably connected to the Y-axis guide 1, and 11 denotes a pen cursor pivotally supported by the Y cursor 10.
It is.

[0004]

As shown in FIG. 11, a Y-cursor 10 is movably connected to the Y-axis guide 1, and a rear end of a pen arm 11 which is driven in the vertical direction is connected to the Y-cursor 10. It is pivoted.

Therefore, rattling occurs at the roller connecting portions between the cursor portions 2 and 3 and the rails 8 and 9 due to the vertical movement of the pen arm 11 or the like. In particular, on the rear end side of the Y-axis guide 1, a vertical torque is generated by the vertical movement of the pen arm 11, so that play is likely to occur.

If the rear end of the Y-axis guide 1 is guided along the X-axis rear rail 9 by a bush or the like, the above-mentioned play problem can be solved. In this case, however, the X-axis front and rear rails 8,
High parallelism is required for the parallelism of No. 9, and the attachment of the bushings and the like in the cursor portions 2 and 3, and the work at the time of assembly and maintenance is not easy. The purpose of the present invention is to solve the above problems.

[0007]

In order to achieve the above object, the present invention provides a pair of X-axis front and rear rails arranged in front and rear of a casing in parallel with each other, and a front cursor portion at one end of the X-axis front rail. A Y-axis guide, which is movably connected with being regulated in the vertical direction and the front-rear direction, and a rear cursor portion of the other end is regulated in a vertical direction via a roller and movably connected to the X-axis rear rail, A Y cursor movably attached to the Y-axis guide;
A pen arm that is supported by a cursor so as to be swingable in a plane perpendicular to the screen and projects from a front wall of the casing and that is linked to a pen lifting drive mechanism, and the Y-axis guide is connected to the X-axis guide. An X-axis drive mechanism that drives along the front and rear rails,
In the Y-axis guide support mechanism of the automatic image forming apparatus having the Y-axis drive mechanism driven along the axis guide, the rear cursor portion of the Y-axis guide contacts the roller contacting the upper surface of the X-axis rear rail and the lower surface. Rollers that are in contact with each other
At least one of the upper and lower rollers is brought into elastic contact with the X-axis rear rail by a spring force.

[0008]

[Action] The kinetic force acting in the vertical direction on the rear end side of the Y-axis guide is regulated by the rollers elastically contacting the upper and lower surfaces of the X-axis rear rail. You will be guided smoothly along.

Further, the roller on the rear end side of the Y-axis guide is always pressed against the X-axis rear rail by a spring force. Therefore, when the pen arm is moved up and down, the roller does not temporarily separate from the X-axis rear rail.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The construction of the present invention will be described below in detail with reference to the embodiments shown in the accompanying drawings. In FIG. 6, reference numeral 12 denotes a casing of the automatic image stitcher, which has a size and a bottom shape suitable for being manually placed at an arbitrary position on a placement surface such as a drawing board or a desk. A round bar-shaped X-axis front rail 13 and an X-axis rear rail 14 are provided on the front and rear portions of the casing 12 in parallel with each other.

A Y-axis guide 15 has a front cursor portion 16 integrally formed at one end thereof as shown in FIG. 1 and a rear cursor portion 17 which is bent upward at right angles at the other end. Is formed.

As shown in FIG. 2, a pair of front guide rollers 18 and 19 are arranged on the front cursor section 16 on an axis perpendicular to the longitudinal direction of the Y-axis guide 15 and rotatably supported. .

Each of the guide rollers 18 and 19 has a curved surface whose peripheral surface is constricted in a hyperbolic shape about the center axis of rotation. The guide roller 18,
19, and the guide rollers 18, 19
The leaf spring fixing shaft 20 is fixedly opposed to the arrangement axis of the above. A substantially middle portion of the leaf spring 21 is fixed to the fixed shaft 20.

The curved surfaces of the guide rollers 18 and 19 are as follows:
The pressing rollers 22 and 23 which abut on the peripheral side surface of the X-axis front rail 13 on the side facing the front wall of the casing 12 and are rotatably supported at both ends of the leaf spring 21 are the pressing rollers 22 and 23 of the front rail 13. The guide rollers 18 and 19 are rotatably pressed against the peripheral side surface opposite to the contact side by spring force.

[0015] Above the rear cursor portion 17, FIG.
As shown in FIG. 2, a guide roller 24 is rotatably supported by a shaft, and a substantially intermediate portion of a leaf spring 25 is fixed below the guide roller 24 by a fixed shaft 26.

The surface of the guide roller 24 is rotatably abutted on the upper surface of the X-axis rear rail 14, and the leaf spring 25
The pressing rollers 27 and 28 rotatably supported at both ends of the
It is located on both sides of the guide roller 24 and is pressed against the lower surface of the X-axis rear rail 14 by a spring force.

A Y-cursor 29 is movably attached to the Y-axis guide 15 via a roller. On both sides of the Y-cursor 29, the rear end of a pen arm 30 has an axis parallel to the rails 13 and 14. Pivot pivot 3 as center
1 has been done.

The pen arm 30 is connected to the Y-axis guide 15
The casing 12 has a front end portion projecting forward from the casing 12 through an opening formed in the front wall of the casing 1 over substantially the entire length thereof in the longitudinal direction.

The pen arm 30 holds a pen 32 at its tip. As shown in FIG. 7, a swing plate 33 (the other is not shown) is rotatably supported on both sides of the casing 12 about an axis parallel to the longitudinal direction of the X-axis front rail 13 so as to be rotatable. A pen-up plate 35 is provided between the reference numerals 33.

The lower surface of the pen arm 30 is placed on the upper end of the pen-up plate 35 by its own weight.

One swing plate 33 is urged counterclockwise by a return spring 36 as shown in FIG. 7, and is locked by a stopper at a predetermined position.

The oscillating plate 33 is slidably engaged with one of L-shaped pieces 38 rotatably supported on the casing 12 by a shaft 37, and the other of the L-shaped pieces 38 is a solenoid fixed to the casing 12. The output shaft 39 is engaged with a shaft 40 protruding from the output shaft via a long hole formed in the L-shaped piece 38.

When the solenoid 39 is energized and its output shaft is attracted, the L-shaped piece 38 moves about the shaft 37 as shown in FIG.
It swings clockwise and clockwise, and in conjunction with this swing, the swing plate 3
3 swings counterclockwise against the pulling force of the return spring.

As a result, the pen-up plate 35 is raised, the pen arm 30 is lifted, and the pen 32 at the tip of the pen arm 30 is raised from the screen. When the power supply to the solenoid 39 is released, the pen-up plate 35 descends, and the pen 32 comes into contact with the screen.

The above configuration constitutes a known pen lifting drive mechanism.

The Y cursor 29 is provided with pulleys 41, 4
Multiplied by 2,43,44,45,46,47,48,
The casing 1 is wound around a drum 49 via a wire rope 52 fixed at both ends 50 and 51 to the casing.
2 is linked to the output shaft of the Y-axis motor 53 fixedly mounted.

The forward / reverse rotation of the drum 49 fixed to the output shaft of the Y-axis motor 53 causes the Y cursor 29 to move
It is configured to move in the reciprocating direction along the shaft guide 15.

The pulleys 41, 45 are rotatably supported by the bottom of the casing 12, and are connected to the pulleys 46, 48, 4.
2 and 44 are rotatably supported at both ends of the Y-axis guide 15, and the pulleys 43 and 47 are rotatably supported by the Y cursor 29.

The front cursor section 16 has a drum pulley 55 connected to an output shaft of an X-axis motor 54 fixed to one side in front of the casing 12, and a rotatably supported front side of the casing 12 on another side. Belt pulley 56
Is connected to the timing belt 57 stretched between the two.

The Y-axis guide 15 is connected to the X-axis motor 5.
4, the X-axis front and rear rails 13,
It is configured to move along.

In the above configuration, as shown in FIG.
Each of the guide rollers 18 and 19 abuts on the X-axis front rail 13 at two points a and b due to its curved surface structure, and the pressing rollers 22 and 23 each have a point c on the X-axis front rail 13. Abut. That is, the front cursor portion 16 is supported at three points on the X-axis front rail 13 at two points, and the rollers 18, 19,
The play between the rails 22, 23 and the rail 13 is removed.

Further, by the above-mentioned three-point support, the front cursor portion 16 can move the front rail 1 vertically and vertically.
3 and always moves following the front rail 13.

Since the pressing rollers 22, 23 resiliently contact the front rail 13 by the elastic force of the leaf spring 21, the rollers 18, 19, 22, 23 abut against the front rail 13 with uniform pressure.

On the other hand, the rear end of the Y-axis guide 15 is formed by a guide roller 24 and pressing rollers 27 and 28 as shown in FIG.
The upper and lower directions are regulated and guided along the rear rail 14. The pressing rollers 27 and 28 abut against the lower surface of the rear rail 14 with uniform pressure by the elastic force of the leaf spring 25, and the guide rail 24 presses against the upper surface of the rear rail 14 by the reaction force of this pressure.

In the above embodiment, two pressing rollers 22 and 23 are provided at both ends of the leaf spring 21. However, as shown in FIG. 9, both ends of the leaf spring 57 are fixed to the front cursor portion 16, and A single pressing roller 58 rotatably supported at an intermediate portion of the leaf spring 57 may be positioned intermediate the guide rollers 18 and 19 and pressed against the peripheral surface of the X-axis front rail 13.

As shown in FIG. 10, a guide roller 59 having a hyperbolic curved surface is also provided in the rear cursor portion 17 similarly to the front cursor portion 16 side. The rear cursor portion 17 may be regulated in the vertical direction by the pair of pressed pressing rollers 27 and 28.

When the present invention is implemented, the front cursor portion 16 only needs to be regulated in the front-rear direction and the up-down direction by the X-axis front rail 13. Therefore, the illustrated guide rollers 18, 19 and pressing rollers 22, As shown in FIG. 8, in addition to the configuration of 23, 58, the front cursor unit 1
6 may be provided with a tubular bearing portion 60, and the bearing portion 60 may be slidably fitted to the X-axis front rail 13 via a bush or a slide ball bearing.

[0038]

According to the present invention, the roller at the rear end of the Y-axis guide is pressed against the upper and lower surfaces of the X-axis rear rail by a spring force as described above. To follow exactly without any vertical displacement. For this reason, there is an effect that the roller does not separate from the X-axis rear rail to generate abnormal noise.

[Brief description of the drawings]

FIG. 1 is an external view.

FIG. 2 is an external view.

FIG. 3 is an external view.

FIG. 4 is an explanatory side view.

FIG. 5 is an explanatory side view.

FIG. 6 is a plan view showing a state in which a casing is removed from a casing.

FIG. 7 is a side view of a pen lifting drive mechanism.

FIG. 8 is an external view showing another embodiment.

FIG. 9 is a plan view showing another embodiment.

FIG. 10 is a side view showing another embodiment.

FIG. 11 is an external view of a conventional technique.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 X-axis guide 2 Front cursor part 3 Rear cursor part 4 Guide roller 5 Guide roller 6 Guide roller 7 Guide roller 8 Rail 9 Rail 10 Y cursor 11 Pen arm 12 Casing 13 Front rail 14 Rear cursor 15 Y-axis guide 16 Front cursor part 17 Rear cursor portion 18 Roller 19 Roller 20 Fixed shaft 21 Leaf spring 22 Pressing roller 23 Pressing roller 24 Guide roller 25 Plate spring 26 Fixed shaft 27 Roller 28 Roller 29 Y cursor 30 Pen arm 31 Pivot support 32 Pen 33 Swing plate 34 Support 35 Pen-up plate 36 Spring 37 Shaft 38 L-shaped piece 39 Solenoid 40 Shaft 41 Pulley 42 Pulley 43 Pulley 44 Pulley 45 Pulley 46 Pulley 47 Pulley 48 Pulley 49 Drum 50 Both ends 51 Both ends 52 Wire rope 3 Y-axis motor 54 X-axis motor 55 drum pulley 56 belt pulley 57 leaf spring 58 roller 59 roller 60 bearing section

Claims (1)

(57) [Scope of request for utility model registration] 1. A pair of X-axis front / rear rails disposed in front and rear of a casing in parallel with each other, and a front cursor portion at one end of the X-axis front rail is regulated in the up-down direction and the front-back direction to be movable. A Y-axis guide connected to the X-axis rear rail so that a rear cursor portion at the other end is regulated in a vertical direction via a roller and movably connected to the X-axis rear rail;
A Y-cursor movably attached to the Y-axis guide, and a tip for supporting the pen and swingably supported on the Y-cursor in a plane perpendicular to the screen project from a front wall of the casing. A pen arm linked to a pen lifting drive mechanism, an X-axis drive mechanism that drives the Y-axis guide along the X-axis front and rear rails, and a Y-axis drive mechanism that drives the Y cursor along the Y-axis guide. In the Y-axis guide support mechanism in the automatic imager equipped with
A roller that contacts the upper surface of the X-axis rear rail and a roller that contacts the lower surface are rotatably provided at the rear cursor portion of the Y-axis guide, and at least one of the upper and lower rollers is attached to the X-axis rear rail by a spring force. A Y-axis guide support mechanism in an automatic image forming device, wherein the Y-axis guide support mechanism is elastically contacted.