JP2000246968A - Lettering machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lettering machine enabling the simplification and miniaturization of a writing utensil lift mechanism, which can be produced inexpensively. SOLUTION: A Y-cursor 24 is attached to a Y-rail 20 freely movable along an X-rail 8 in a freely movable manner and the intermediate part of an arm 32 is pivotally supported on the Y-cursor 24 in a freely shakable manner. A wire 90 is trained over a pair of the vertically directed pulleys 78, 80 supported on the Y-cursor 24 and the lift pulley 76 supported on the side of the arm 32 and one end of the wire 90 is connected to a plunger 88 of a solenoid 86 fixed to a casing 2 while the other end thereof is engaged with the casing 2. When the plunger 88 is driven by supplying a current to the solenoid 86, a lift pulley 74 is drawn up by the tension of the wire 90 and the arm 32 falls on the leading end side thereof and the tip of a writing utensil 36 is brought into contact with a paper on the upper surface of a placing stand under pressure. Variable power is supplied to the solenoid 86 by a supply power converting means.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manually moving a casing to an arbitrary position on a sheet on a mounting table, and printing at an arbitrary position on the sheet by a writing instrument held by an arm protruding from the casing. Regarding lettering machines that can.

[0002]

2. Description of the Related Art A compact portable casing is manually moved to an arbitrary position of a sheet on a mounting table such as a table, and an ink pen held by an arm protruding from the casing is moved in parallel with the sheet in the X and Y directions. Japanese Patent Application Laid-Open No. Hei 10-297173 discloses a lettering machine that can move and raise and lower to print on an arbitrary position on a sheet. Japanese Patent Application Laid-Open No. 4-363606 discloses an XY plotter that converts a displacement of a plunger of a solenoid into a vertical displacement of a pen using a V-shaped lever operating lever and a pulley.

[0003]

In this type of lettering machine, a casing is manually moved to an arbitrary position on a sheet on a mounting table such as a table and used. Therefore, it is desirable that the casing is small and lightweight, and it is a technical problem to simplify the internal structure of the casing. However, in this type of lettering machine, there is a problem that the mechanism for raising and lowering the pen is complicated and the structure inside the casing is complicated. An object of the present invention is to solve the above problems.

[0004]

In order to achieve the above-mentioned problems, the present invention moves the casing (2) to an arbitrary position on the paper placing table by hand, and makes the casing (2) of the paper on the paper placing table arbitrary. In a lettering machine in which printing is performed by a writing implement (36) held on an arm (32) protruding from the casing (2), the lettering machine moves along an X rail (8) provided on the casing (2). A Y-rail (20) is movably mounted, a Y-cursor (24) is movably mounted on the Y-rail (20), and an intermediate portion of the arm (32) is mounted on the Y-cursor (24) of the casing (2). A spring (74) for swingingly supporting a pivot (34) in a plane perpendicular to the bottom surface and for urging the distal end side of the arm (32) in an ascending direction; To a pair of vertical The pulleys (78) and (80) are rotatably supported and positioned below the vertical pulleys (78) and (80), and the vertical pulley (76) is rotated vertically at the rear of the arm (32). A solenoid which is freely supported and supports a wire (90) between the pair of longitudinal pulleys (78) and (80) and the lifting pulley (76), and one of the wires (90) is fixed to the casing (2). (86) is connected to the plunger (88), and the other end of the wire (90) is locked to the casing (2) via the stopper (72), and current is supplied to the solenoid (86) so that the plunger (86) is supplied. 8
8) When the wire (90) is driven, the lifting pulley (74) on the arm (32) side is pulled up against the elastic force of the spring (74) by the tension of the wire (90), and the arm (32) The tip of the writing tool (36) is lowered so that the tip of the writing instrument (36) comes into pressure contact with the paper on the upper surface of the mounting table, and the solenoid (86) is connected to a supply power conversion means such as a chopper circuit.

[0005]

Embodiments of the present invention will be described below with reference to the drawings. (2) is a casing of a compact portable lettering machine, which has a bottom portion suitable for mounting on a mounting table such as a table. A scale (4) is fixed to a front portion of the casing (2). The upper cover of the casing (2) is provided with a keyboard having keys for inputting print information and other keys, and a liquid crystal display.

An X rail (8) and an auxiliary X rail (10) are fixedly mounted on a substrate (6) inside the casing (2), and an X cursor (12) is rolled on the X rail (8).
4) It is movably attached via (16) and (18). The X cursor (12) is integrally formed with a Y rail (20), and a tail shoe of the Y rail (20) is provided with a roller (22) and a slide shoe (not shown) made of a resin material (not shown). 10) It is mounted so that it can run freely across it.

The Y cursor (2) is placed on the Y rail (20).
4) is movably attached via rollers (26), (28) and (30). An arm (32) has a frame (32a) having a U-shaped cross section and a pulley mounting portion (32b) integrally formed at the rear of the arm. Arm (3
The frame (32a) of (2) is pivotally supported (34) by a pivot and a pivot bearing so as to be rotatable around the axis parallel to the X rail (8) by the Y cursor (24).

A writing instrument (36) is detachably held at the tip of the arm (32). Next, X driving the Y rail (20) in the left-right direction (X-axis direction) in FIG.
The shaft drive mechanism will be described. Reference numeral (38) denotes an X motor fixed to the casing (2). A belt pulley (40) is rotatably supported on the cover case of the X motor, and the belt pulley (40) is connected to the X motor via an endless belt. It is connected to a belt pulley (41) fixed to the output shaft of the motor (38).

(42) is a substrate (4) of the casing (2).
4) A belt pulley rotatably supported by the belt pulley, and an endless belt (46) is stretched between the belt pulley (42) and the belt pulley (40) to form a parallel moving portion of the endless belt (46). An X cursor (12) is fixed to one side. When the X motor (38) is driven forward and reverse, the endless belt (46) rotates, and in conjunction with this rotation, the X cursor (12) moves along the X rail (8) in the X-axis direction. To the Y-rail (20) integrated with the X cursor (12)
Moves in the horizontal direction in FIG.

Next, the Y cursor (24) is moved to the Y rail (2).
A description will be given of a Y-axis driving mechanism that drives in the vertical direction, that is, the Y-axis direction in FIG. (48) is a Y motor fixed to the casing (2), (50) is a Y motor (4)
8) a wire pulley fixed to the output shaft;
4) a pulley rotatably supported by the substrate (6), (5)
6) (60), (62) and (66) are pulleys rotatably supported on both ends of the Y-rail (20) in pairs, (58).
(64) is a pulley rotatably supported by the Y cursor (24).

One of the wires (68) is a wire tension adjusting stopper (70) attached to the substrate (44).
And the middle part is a pulley (60) (58) (56)
After being wound around (52), the wire (68) is wound around the pulley (50) a plurality of times.
(62) After being hung on (64) and (66), the other end is connected to a stopper (not shown) attached to the substrate (44) with an appropriate tension.

When the Y motor (48) is driven forward and reverse, the pulley (50) rotates forward and reverse, and one of the wires (68)
The wire (68) is wound around the pulley (50), and is fed out and driven in the Y-axis direction.

Next, the arm (32) is connected to the casing (2).
Arm in a plane perpendicular to the bottom of the arm (3
A description will be given of the Z-axis drive mechanism that moves the writing implement (3) at the tip of 2) up and down with respect to the screen. (74) is a coil spring compressed and arranged between the rear lower surface of the Y cursor (24) and the pulley mounting portion (32b) of the arm (32).
The arm (32) is pivoted about the pivot (34) in FIG.
The writing implement (36) is urged in the middle and counterclockwise directions, that is, in a direction ascending from the screen.

(76) a lifting pulley rotatably and vertically supported by a pulley mounting portion (32b) of an arm (32); (78) and (80) vertically rotatable by a Y cursor (24); (82) is a Y-rail (2)
0) a pulley rotatably supported laterally on the tail of
Reference numeral (84) denotes a pulley rotatably supported by the X cursor (12) in a lateral direction.

Reference numeral (86) denotes a solenoid fixed to the substrate (6), and a wire (9) is attached to the tip of the plunger (88).
0) is attached. A coil spring (92) for preventing wire slack is fitted into a rear portion of the plunger (88) projecting from a rear end surface of the cover case of the solenoid (86), and is fitted to the rear end of the plunger (88) by an E-ring. Locked.

The coil spring (92) includes a plunger (88).
Is urged in the suction direction, and the resilient force is applied to the coil spring (7).
It is set weaker than the elasticity of 4). The other end of the wire (90) has an appropriate tension and is wound on a pulley (82) (78) (76) (80) by (84), and the other end of the wire (90) is connected to the substrate (44). ) Are attached to the stopper (72).

The solenoid (86) is connected to a supply power conversion means composed of a chopper circuit or the like, and is configured to supply a variable drive power signal under the control of a controller. In the above configuration, when the solenoid (86) is in the off state, the pulley mounting portion (32b) of the arm (32) is pushed down by the elastic force of the coil spring (74) as shown in FIG. And the writing instrument (36) is placed on a sheet (9) on a mounting table (94) such as a table.
It rises by a predetermined distance from 6).

A chopper voltage is applied to the solenoid (86), and the plunger (88) is attracted by electromagnetic force.
The wire (90) is pulled. At this time, the lifting pulley (76) rises by the tension of the wire (90) against the elastic force of the coil spring (74), and the arm (3).
2) swings clockwise in FIG. 2 around the pivot (34), and the tip of the writing instrument (36) is connected to the solenoid (86).
Touches the screen with pen pressure determined by the power supplied to the screen. The electric power supplied to the solenoid (86) can be changed by the supplied electric power conversion means according to the type of the writing implement or the like.

When the power supply to the solenoid (86) is stopped, the electromagnetic attraction to the plunger (88) is released, and the arm (3) is repelled by the elastic force of the coil spring (74).
The pulley mounting portion (32b) of (2) is pushed down counterclockwise in FIG. 2 around the pivot (34) against the tension of the wire (90) due to the elastic force of the coil spring (92). The writing instrument (36) rises from the screen to a predetermined position.

With the writing implement (36) raised,
The writing implement (36) is manually moved to the coil spring (74).
When the arm (32) is pressed down against the resilience of the arm, the arm (32) rotates clockwise in FIG. 2 around the pivot (34), and the lifting pulley (76) rises. At this time, the wire (90) is pulled by the elastic force of the coil spring (92), and the wire (90) is moved by the movement of the plunger (88) in the suction direction by the elastic force of the coil spring (92).
Is absorbed. Thereby, the wire (90) holds the tension, and the wire (90) is pulled by the pulley (82).
It does not come off from the grooves of (78), (76), (80) and (84).

[0021]

Since the present invention is constructed as described above, there is an effect that the elevating mechanism of the writing instrument can be simplified, and downsizing and cost reduction can be achieved.

[Brief description of the drawings]

FIG. 1 is a plan view showing the internal structure of a lettering machine according to the present invention.

FIG. 2 is a side sectional view of a lettering machine.

[Explanation of symbols]

 2 Casing 4 Scale 6 Substrate 8 X rail 10 Auxiliary X rail 12 X cursor 14 Roller 16 Roller 18 Roller 20 Y rail 22 Roller 24 Y cursor 26 Roller 28 Roller 30 Roller 32 Arm 32a Frame 32b Pulley mounting part 34 Pivot 36 Writing instrument 38 X motor 40 Belt pulley 42 Belt pulley 44 Substrate 46 Endless belt 48 Y motor 50 Wire pulley 52 Pulley 54 Pulley 56 Pulley 58 Pulley 60 Pulley 62 Pulley 64 Pulley 66 Pulley 68 Wire 70 Stopper 72 Stopper 74 Coil spring 76 Pulley 78 Pulley 80 pulley 82 pulley 84 pulley 86 solenoid 88 plunger 90 wire 92 coil spring 94 mounting table 96 paper

Claims (1)

[Claims] 1. A casing (2) is manually moved to an arbitrary position on a paper mounting table, and is held at an arbitrary position of the paper on the paper mounting table by an arm (32) protruding from the casing (2). In a lettering machine adapted to perform printing by using the written writing tool (36), a Y rail (20) is movably attached along an X rail (8) provided in the casing (2), and the Y rail (20) is attached. ), A Y cursor (24) is movably attached to the Y cursor (24), and the intermediate portion of the arm (32) is pivotally supported on the Y cursor (24) in a plane perpendicular to the bottom surface of the casing (2). 34) Then, a spring (74) for urging the distal end side of the arm (32) in the ascending direction is provided, and the pair of vertical pulleys (78) and (80) are rotatable on the Y cursor (24). Pivoted, said vertical pooh A vertically movable pulley (76) is rotatably supported at a rear portion of the arm (32) at a position below the ribs (78) and (80) to rotatably support the pair of vertical pulleys (78) and (80). A wire (90) is wound around the lifting pulley (76), one of the wires (90) is connected to a plunger (88) of a solenoid (86) fixed to the casing (2), and the other of the wires (90) is connected. Is fixed to the casing (2) via a stopper (72), and a current is supplied to the solenoid (86) so that the plunger (8) is
8) When the wire (90) is driven, the lifting pulley (74) on the arm (32) side is pulled up against the elastic force of the spring (74) by the tension of the wire (90), and the arm (32) A tip of the writing tool (36) is pressed down to contact the paper on the upper surface of the mounting table, and the solenoid (86) is connected to a supply power conversion means such as a chopper circuit. .