JPH0642879Y2 - XY plotter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to an XY plotter that automatically draws on a screen using a writing tool having a consumable writing core such as a lead core.

[Conventional technology]

Japanese Patent Publication No. 56-34892 discloses that a plurality of writing cores are held in a turret type magazine of a plotter head, a desired writing core is pressed by a push pin and abutted on the screen, and the writing core is used to display on the screen. A turret type XY plotter for performing line drawing is disclosed. Further, in JP-A-57-138997, a rotary writing instrument stocker, that is, a carousel is provided on the machine body side, and a plurality of pen holders of the carousel hold a lead cartridge with a writing lead inserted therein. There is disclosed an XY plotter capable of mutually exchanging the lead cartridge between the pen and the pen holding portion of the carousel.

Further, in Japanese Utility Model Laid-Open No. 60-80996, a writing block provided on an imaging head is provided with a lead case, and one lead in the lead case is supplied to a holder in the writing block and held by the lead holder. There is disclosed an XY plotter that performs a line drawing on a screen by using the writing core.

Further, in Japanese Patent Laid-Open No. 61-132394, a plurality of pen holding parts of a writing tool stocker provided in a machine body holds a writing tool having a built-in automatic lead-out mechanism, and the pen holding section on the stocker side and the drawing head side are held. An XY plotter capable of exchanging writing instruments with a pen holding portion is disclosed.

[Problems to be solved by the invention]

The turret type XY plotter and the XY plotter in which the lead case is provided with the lead case are designed to hold a plurality of lead cartridges in the draw head and to provide a lead case for storing a plurality of lead cartridges. However, there is a defect that the structure of is complicated and the weight of the printing head becomes large, and high-speed printing control cannot be performed. Further, in the XY plotter in which the writing implement stocker is provided on the machine body side and the writing implement is held in the plurality of pen holding portions of the stocker,
Since there is no mechanism for supplying the lead to the writing implement on the side of the writing implement stocker, it is extremely inconvenient to replace the writing implement without the lead of the writing implement stocker with the writing implement with the lead by manual operation.

The present invention aims to eliminate the above defects.

[Means for solving problems]

In order to achieve the above-mentioned object, the present invention provides a writing instrument stocker having a plurality of writing instrument holding portions for detachably holding a writing instrument in which a consumable writing lead is placed in a lead insertion hole, on the machine body side, In a device capable of mutually exchanging writing instruments between a desired writing instrument holding unit of the writing instrument stocker and a writing instrument holding unit of an imaging head movable in a desired direction relative to a writing screen , A core storage container for accommodating a plurality of cores is provided at a position on the upper side of the writing tool holder of the writing tool stocker, and a core drop hole is provided at the center of the bottom of the core storage container to drop the cores. An opening / closing mechanism linked to the control device is provided below the hole, and the wick storage container is made transparent or a transparent window is provided on the peripheral wall of the wick storage container.

[Action]

In the above configuration, the drawing head is drawing on the screen,
Alternatively, while the drawing is on standby, the opening / closing mechanism is used to drop the lead in the lead storage container downward from the lead drop hole of the lead storage container, and the lead is supplied to the writing instrument in the coreless state below the lead drop hole. The amount of wick in the wick storage container can be easily confirmed from the outside of the wick storage container.

〔Example〕

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

In FIG. 5, reference numeral 2 denotes a paper-driving type XY plotter body in which a Y rail 6 is horizontally fixed on a paper placing plate 4. Both sides of the sheet 8 on the mounting plate 4 are supported by pinch roller mechanisms, which are arranged on both sides of the mounting plate 4 and are composed of a driving roller and a pressing roller, and the drive rollers are driven by an X motor. Thus, the paper 8 on the mounting plate 4 is fed back and forth (X direction). An image forming head 10 is attached to the Y rail 6 so as to move along the Y rail 6 by driving a Y motor. Reference numeral 12 denotes a writing tool holding portion provided on the drawing head 10, and the holding portion 12 is linked to a pen lifting mechanism built in the drawing head 10. A box 14 is arranged on one end side of the Y rail 6, and a rotary type writing implement stocker 16 (carousel) shown in FIG. 4 is arranged in the box 14. The stocker 16 is a motor with a speed reducer fixed to the box 14.
It is detachably fitted to 18 output shafts. A writing implement holder 20 is formed at regular intervals at a lower horizontal portion formed by a pair of disks 16a, 16b of the stocker 16, and a desired one of the holders 20 and the writing implement holder 12 of the drawing head 10 are formed. It is configured such that the writing instruments can be automatically exchanged with each other. Since the structure for automatically changing the writing instrument is known, its detailed description is omitted. On the upper horizontal part 22 of the stocker 16, a core storage container 24 made of a cylindrical transparent body is fixedly positioned just above each holding part 20. The wick storage container 24 can be seen from the opening of the box 14. Grooves for fitting and holding the peripheral surface of the writing instrument P are formed on the outer peripheral portions of the disks 16a and 16b of the stocker 16, and a pen stopper 25 is fixedly provided in the middle of the upper and lower grooves. Reference numeral 26 denotes a rotating arm, which is rotatably supported by a shaft 28 on the disks 16a and 16b and is biased by a spring in one direction. The grooves of the disks 16a and 16b, the pen stopper 25, and the rotating arm 26 constitute the writing instrument holder 20. Writing instrument P
The half-circumferential surface thereof is disposed in contact with the wall surfaces of the grooves of the disks 16a and 16b and the wall surface of the pen stopper 24. In this state, the rotating arm 26 makes elastic contact with the side surface of the writing instrument P and the upper end of the pen stopper 25 and the disk. The brim portion of the writing instrument P is detachably fitted between the lower surface of the writing instrument P and the lower surface of the 16a, and the writing instrument P is detachably held by the holding portion 20 by the interaction thereof. The writing instrument P has a lead insertion hole for receiving a consumable writing lead, and has a known lead chuck and lead automatic feeding mechanism incorporated therein. The internal structure of the writing instrument P is disclosed in detail in Japanese Patent Application Laid-Open No. 61-132394, so its illustration and description will be omitted. As shown in FIG. 1, the lead storage container 24 has a lead storage portion 24a for storing a plurality of lead 30 and a chuck storage portion 2
4b is formed. A taper surface 32 having a relatively warm angle is formed on the lower bottom wall of the lead storage portion 24a, and a taper surface 34 having a relatively steep angle is formed on the lower bottom wall of the chuck housing portion 24b. 36 and 38 are a pair of chuck pieces, and a coil spring is disposed between the upper ends of these chuck pieces and the bottom surface of the bottom wall of the lead storage part 24a in a compressed manner, and the elastic force of the springs lowers the chuck pieces 36 and 38. The side surface is pressed against the tapered surface 34, and the core 30 is held between the protrusions formed on the lower ends of the inner surfaces of the chuck pieces 36, 38 that face each other. In the core gripping state, the tapered lower portions of the chuck pieces 36, 38 project downward from the lower surface of the chuck housing portion 34 by a predetermined length. Reference numeral 40 is a residual core receiver attached to the stocker 16, and is arranged immediately below each of the writing tool holding portions 20. Reference numeral 42 denotes a bracket fixed to the bottom wall of the machine body 2, to which a motor 44 with a reducer is fixed. 46 is a cylindrical cam, the central part of the ceiling wall of which is
It is fixed to the output shaft 48 of the motor 44. 50 is a plate-shaped arm, the hole formed at one end of which is the output shaft
It is slidably inserted in 48. The arm 50 is located in an arm restriction groove 52 formed on the peripheral wall of the cam 46,
In addition, the coil spring compression-inserted and arranged on the output shaft 48
The elastic force of 54 presses against the lower surface of the top wall of the cam 46. On the lower surface of the peripheral wall 46a between one end of the wall surface of the groove 52 at the same level as the top wall and the lower surface and the other end of the wall surface of the groove 52,
An elevating control cam surface 56 is formed in which the amount of protrusion is gradually increased with the surface of the groove 52 protruding slightly downward from the horizontal wall surface as a start end s and the amount of protrusion is maximized at the end e. As shown in FIG. 3, a guide groove 58 is formed at the tip of the arm 50 at a position where it engages with the protrusions of the chucks 36, 38. Reference numeral 60 is a stopper fixed to the upper horizontal portion 22 so as to be adjacent to each core storage container 24, and 62 is a stopper fixed to the bracket 42. The motor 44, the cam 46, the stopper 62, and the arm 50 constitute a lead supply actuating device 63, and the device 63, the lead storage container 24, and the stopper 60 constitute an automatic lead supply device.

Next, the operation of this embodiment will be described.

The stocker is controlled by a controller (not shown).
The rotation control of 16 is carried out, and the writing instrument P which should supply a lead is made to oppose the lead supply operation device 63. The arm 50 is located in the arm restriction groove 52 of the cam 46, and both side surfaces of the arm 50 are in contact with the vertical surfaces of both ends of the arm restriction groove 52. The vertical surface at one end of the arm restriction groove 52 is set to have a width that allows the arm 50 to easily get over it by a load in the rotation direction applied to the arm 50. A plurality of wicks are housed in the wick storage section 24a of the wick storage container 24, one of which is a core drop hole 31 at the bottom of the wick storage section 24a.
It is held by the lower protrusions of the chuck pieces 36, 38 through. Next, the controller 44 drives the motor 44 to rotate its output shaft 48 clockwise by 90 degrees in FIG.
At this time, the arm 50 rotates in conjunction with the cam 46, the guide groove 58 of the arm 50 moves to the lower ends of the chuck pieces 36, 38,
The upper surface around the guide groove 58 pushes up the chuck pieces 36 and 38 as shown in FIG. As a result, the chuck pieces 36, 38
Rises against the elasticity of the coil spring, and the tapered surface
By the guide of 34, the gap between the lower end protrusions of the chuck pieces 36, 38 is widened, the gripping state of the core by the chuck pieces 36, 38 is released, the core 30 becomes free state, and the core 30 moves to the arm 50.
Through the guide groove 58 of the writing instrument P, and is inserted into the core insertion hole (not shown) of the writing instrument P. An inclined surface is formed at the tip of the arm 50 so that the lower ends of the chuck pieces 36, 38 can be pushed up smoothly. When the output shaft 48 further rotates clockwise by the drive of the motor 44, the arm
50 collides with stopper 60. At this time, the hole at the bottom of the chuck storage portion 24b is closed by the upper surface of the arm 50. One of the plurality of cores of the core storage section 24a has a tapered surface 32 of the core storage section 24a between the empty chuck pieces 36 and 38.
The guide is automatically dropped to be in the inserted state, and the lower end of the core is locked to the upper surface of the arm 50. In addition, the motor
When 44 is driven, the arm 50 is disengaged from the arm restricting groove 52 of the cam 46 by the clockwise rotation of the cam 46, and the arm 50 moves.
Is vertically lowered by the guide of the elevation control cam surface 56 of the cam 46, pushes the lead inserted in the writing implement P further in the depth direction, and pushes out the residual lead of the writing implement P from the writing implement P. When the arm 50 descends, the core is gripped between the lower end protrusions of the chuck pieces 36, 38. The arm 50 is lowered until it comes into contact with the upper end surface of the writing instrument P, and when the pushing of the core into the writing instrument P by the arm 50 is completed, the arm 50 is disengaged from the stopper 60. As a result, the arm 50 is interlocked with the cam 46 in the clockwise direction while being locked to the cam surface 56 of the cam 46, and the arm 50 is locked to the motor-side stopper 62. Incidentally, when the motor 44 is driven, only the cam 46 rotates in the clockwise direction, the arm 50 deviates from the maximum protruding position of the cam surface 56, and the arm 50 moves upward by the elastic force of the coil spring 54, and the arm 50 moves. The cam 46 is fitted in the arm restriction groove 52. Next, the motor 44 is rotated clockwise by 180 degrees to move the arm 50 to the initial state shown in FIG. 1 to prepare for the next lead supply operation. The core automatic supply operation is performed during the drawing by the drawing head 10. When the writing tool P used by the head 10 for drawing is out of the core, a well-known writing tool exchange program built in the controller causes the stocker 16 to hold the writing tool P containing the core on the stocker 16 side. The writing instrument P is automatically exchanged between the writing instrument holding unit 12 on the head 10 side and the controller under the control of the controller.

The present invention is not particularly limited to the rotary writing instrument stocker. Also, the core storage container 24 is a non-transparent body,
As shown in FIG. 4, a see-through window 23 may be provided to allow the amount of the core 30 in the core storage container 24 to be confirmed from the outside.

Further, the chuck pieces 36, 38 constitute an opening / closing mechanism for releasing the lead and unlocking the core, but the mechanism is not limited to the chuck pieces 36, 38 shown in the drawings. As shown in FIG. 6, a shutter plate 70 movable laterally with respect to the lead drop hole 31 of the lead storage container 24 may be used. When the shutter plate 70 is driven by the arm and the hole 72 coincides with the lead drop hole 31, the lead 30 in the lead drop hole 31 falls downward.

[Effect] Since the present invention is configured as described above, the lead can be automatically supplied to the coreless writing instrument of the writing instrument stocker on the machine side, and the peripheral wall of the lead storage container can be made transparent or the peripheral wall. Since the transparent window is provided in the above, there is an effect that the amount of the supply core in the core storage container can be visually and easily confirmed.

[Brief description of drawings]

1 is a front view, FIG. 2 is a front view, FIG. 3 is a plan view, FIG. 4 is a front view, FIG. 5 is an external view, and FIG. 6 is a sectional view showing another embodiment. 2 …… Airframe, 4 …… Standing plate, 6 …… Y rail, 8 …… Paper, 10
…… Drawing head, 12 …… Writing instrument holder, 14 …… Box, 1
6 …… Writing tool stocker, 18 …… Motor, 20 …… Writing tool holder, 23 …… Transparent window, 30 …… Core, 32,33 …… Tapered surface, 31
...... Core drop hole, 36,38 …… Chuck piece, 44 …… Motor, 46…
… Cam, 50 …… Arm, 60,62 …… Stopper, 70 …… Shutter plate, 72 …… Hole

Claims (1)

[Scope of utility model registration request] 1. A writing tool stocker having a plurality of writing tool holding portions for removably holding a writing tool in which a consumable writing core is placed in a core insertion hole is provided on the machine body side, and the writing tool stocker has a desired writing tool stocker. A writing tool of the writing tool stocker, wherein the writing tool can be exchanged between the writing tool holding section and the writing tool holding section of the drawing head movable in a desired direction relative to the drawing screen. A wick storage container for accommodating a plurality of wicks is arranged at a core providing position on the upper side of the holding unit, a wick drop hole is provided at the center of the bottom of the wick storage container, and a controller is provided below the wick drop hole. An XY plotter, characterized in that an opening / closing mechanism associated with the wick storage container is provided, and the wick storage container is made transparent or a transparent window is provided on a peripheral wall of the wick storage container.