JPH0483699A - Residual lead processor for automatic drafting machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a residual core processing device for an automatic drafting machine.

[Conventional technology]

Conventionally, this type of device replenishes a writing instrument such as a lead cartridge or lead holder with a new lead from above, and pushes the lead with a push rod or push plate to push out the remaining lead inside the writing instrument. I'm throwing it away. Alternatively, if the lead inside the writing instrument is held by a zipper, the remaining lead is discharged from the writing instrument by repeatedly opening and closing the zipper, like in a known mechanical pencil.

[Problem that the invention seeks to solve]

As described above, in the method of pushing out the remaining lead from inside the writing instrument using a push rod or a push plate, there is a restriction on the length of new lead to be supplied, and it is necessary to accurately match the length of the lead to a specified dimension. Further, in the case of the mechanical pencil method, there was a drawback that it took a long time to discharge the remaining lead.

The present invention aims to eliminate the above-mentioned defects.

[Means to solve problems]

In order to achieve the above object, the present invention provides a device for discharging the remaining lead in a writing instrument 14 that is movably supported on a drawing head 10 from the writing instrument 14.
a pair of plate-shaped clamping bodies 30° 32, each of which has one end supported with a predetermined range of play; the plate-shaped clamping bodies 30;
biasing means 28.2 for biasing 32 in a direction in which they come into close contact with each other;
9, and a driving means 22 for driving the pair of clamping bodies 30, 32 in a direction to spread them apart.

[Effect]

In the above configuration, the drive means 22 allows the clamping body 3 to
When 0 and 32 are pushed apart, a core insertion space is formed between the clamping bodies 30 and 32. By moving the pen bed 10, the writing instrument 14 is moved onto the holders 30 and 32, and the writing instrument 14 is lowered to insert the remaining lead protruding from the tip of the writing instrument 14 into the lead insertion space between the holders 30 and 32. Inset and place. Next, drive the drive device 22 to
When the spreading force against 0°32 is released, the clamping body 30
．． 32 approach each other by the biasing force of the biasing means 28 and 29, and the remaining core is clamped between the clamping bodies 30 and 32. Clamping body 3
0 and 32 are closed to clamp the residual core, the positions of the clamping bodies 30 and 32 are displaced due to the play of their supporting parts, following the position of the residual core. Due to this displacement, the remaining core has the clamping body 3
No unreasonable pressure is applied in the displacement direction from 0, 32, and only the clamping force of the clamping bodies 30, 32 acts on the remaining core.

Therefore, when the clamping bodies 30 and 32 sandwich the remaining core, there is no fear that the remaining core will break. Next, the writing instrument 14 is raised and the remaining lead is pulled out from inside the writing instrument 14.

〔Example〕

The structure of the present invention will be described in detail below with reference to embodiments shown in the accompanying drawings.

2 is a platen fixed to the main body of the paper-driven automatic drawing machine, and a drawing roller 4 is installed in a groove formed in the width direction of this platen.
are arranged so that they can rotate freely. A drive roller 6 is coaxially and rotatably disposed in a plurality of grooves formed adjacent to and parallel to the groove.

The rollers 4 and 6 are connected to a rotary drive device so as to rotate in the same direction in conjunction with each other. A Y rail 8 is installed between both sides of the main body, and a printing head 10 is movably attached along the Y rail 8. A pinch roller 12 is rotatably arranged above the drive roller 6, and the pinch roller 12 is configured to come into elastic contact with the drive roller 6 by the elasticity of a spring. The drawing head 10 is provided with a pen holder 16 that removably holds a writing instrument 14 such as a known lead cartridge or lead holder. It is connected to the output part of the lifting drive device (not shown in the figure). A box 18 is fixed to the main body at one end of the Y rail 8, and a stepping motor (not shown) is built into this box, and a plurality of writing instruments 14 are attached to and detached from the output shaft of the motor. A known stock carousel 20 that is freely held is removably connected. Pen holder 16 of the drawing head 10 and the stocker carousel 20
The writing instrument 14 is configured to be able to be automatically exchanged with each pen holder. The platen 2 is located near the stock carousel 2o.
Below 0 is a drive device consisting of a solenoid! 22 is fixedly installed, and a bridge member 26 is attached to the tip of the output shaft 24 of the device [22].
is fixed. A mounting plate 40 is fixed to the main body, and side plates 42 and 44 are fixed to the horizontal portion 40a of the mounting plate in parallel with each other. A pair of plate-shaped clamping bodies 3o and 32 are arranged between the side plates 42 and 44. At one end of each of the clamping bodies 30, 32, a cylindrical portion 30a,
32a, and a pair of pins 46.32a are formed on the cylindrical portions 30a, 32a, and are erected on the horizontal portion 40a of the mounting plate 40.
48 is loosely fitted. Biasing means 28.29 consisting of a coil spring is compressed and arranged between each outer surface of the clamping body 30.32 and the side plate 42.44, and the biasing means 28.2
Due to the elastic force of 9, the clamping bodies 30 and 32 are in close contact with each other in parallel. The clamping body 30.32 is in close contact with the pin 46.48 and the cylindrical parts 30a, 3.
2a, it is configured to be movable in a direction perpendicular to the side plate 42.44 and in a direction inclined to the pin 46.48. The wide side surfaces of the clamping bodies 30 and 32 are arranged in a plane substantially parallel to the direction in which the pen holder 16 moves up and down. In addition, the clamping body 30.32
The upper end portion of the pen holder 16 of the drawing head 10 is disposed directly below the movement path of the pen holding center. The open end sides of the clamping bodies 30 and 32 are each bent outward in a dogleg shape, forming a dogleg shape as a whole. The V-shaped open end of the clamping body 30.degree. 32 faces the bridge member 26. The upper parts of the clamping bodies 30, 32 are opened through holes formed in the platen 2, and the clamping bodies 30, 32 are opened through holes formed in the platen 2.
A tray 34 for storing the remaining core is slidably arranged below the tray 32. The inner surfaces of the clamping bodies 30, 32, that is, the core clamping parts, are subjected to high friction treatment.

Next, the operation of this embodiment will be explained.

Normally, the output shaft 24 of the drive device 22 is made to protrude, and the bridge member 2
6 is press-fitted into the inner surface of the bent portion of the open end of the clamping bodies 30, 32 to open the clamping bodies 30, 32 as shown in FIG. When the lead in the writing instrument 14 held by the pen holder 16 of the drawing head 1o becomes shorter by a predetermined length, the controller determines whether the lead is missing by known means. When the controller determines that there is no lead, the drawing head 10 is moved to Y with the pen holder 16 raised under the control of the controller.
It moves along the rail 8, and as shown in FIG.
Position it directly above. Next, the remaining lead inside the writing instrument 14 is made to protrude several millimeters from the tip of the writing instrument 14 by known means. Next, the pen holder 16 is lowered, the writing instrument 14 is lowered, and the residual lead 36 protruding from the tip of the writing instrument 14 is inserted into the lead insertion space between the clamping bodies 30 and 32 as shown in FIG. Next, the drive device 22 is driven, and its output shaft 2 is
4 is retracted, and the clamping bodies 30, 32 are urged together by means 28.
29 to close the core insertion spaces of the clamping bodies 30 and 32. As a result, the remaining core 36 is transferred to the clamping body 30.
, 32. When the clamping bodies 30, 32 sandwich the residual core 36, the clamping bodies 30.32 are displaced following the position of the residual core 36, and the clamping bodies 30. Clamp with equal pressure by the inner surfaces of 32. A clamping body 30 following the position of the remaining core 36,
The displacement movement of 32 is caused by the pins 46, 48 and the cylindrical parts 30a, 32.
This is possible due to the play between a and a. Assuming that there is no displacement movement of the clamping bodies 30 and 32 due to this play, the ninth
As shown in the figure, when the inner surfaces of the clamping bodies 30' and 32' are inclined with respect to the residual core 36, when the clamping bodies 30 and 32 close and sandwich the residual core 36, an uneven load is applied to the residual core 36. It takes,
The remaining core 36 will break. However, in this embodiment, the clamping bodies 30 and 32 follow the remaining core 36 and hold the remaining core 36.
Since it moves parallel to the clamping body 30,
No eccentric load is applied to the remaining core 36 from the inner surface of the core 32. Next, when the pen holder 16 is raised and the writing instrument 14 is raised, the remaining lead 36 is pulled out from the writing instrument 14 so that the remaining lead 36 remains held between the clamping bodies 30 and 32. Next, when the output shaft 24 of the drive device 22 is protruded and the clamping bodies 30 and 32 are spread apart by the pressing force of the bridge member 26, the remaining core 36 held between the clamping bodies 30 and 32 falls. and stored in the tray 34. Next, the controller drives and controls the pen head 10 and the stocker carousel 2o to return the writing instrument 14 from which the remaining lead has been discharged to a predetermined position in the stocker carousel 20.

In this embodiment, the clamping body is in an open state when the core remaining process is completed, but a sequence in which the clamping body is opened only when performing the core remaining process may be adopted. Also, biasing means 28, 29 for biasing the clamping bodies 30, 32 in the direction of close contact.
is not limited to a coil spring, and as shown in FIG.
It is also possible to use a suction force of 0.52. The other configurations in FIG. 8 are the same as those of the embodiment shown in FIG.

〔effect〕

Since the present invention is configured as described above, it is possible to quickly and reliably remove the remaining lead from the writing instrument, and
When the remaining core is held between the clamping members, no eccentric load is applied to the remaining core, so there is an effect that there is no fear of the remaining core.

[Brief explanation of drawings]

Fig. 1 is an external view, Fig. 2 is an overall external view, Fig. 3 is an explanatory diagram of operation, Fig. 4 is an explanatory diagram of operation, Fig. 5 is an explanatory diagram of operation, and Fig. 6 is an explanatory diagram of operation.
7 is a plan view of the clamping body, FIG. 8 is an external view showing another embodiment, and FIG. 9 is an explanatory view. 2...Platen, 4...Drawing roller, 6...Drive roller, 8...Y rail, 10...Pen head, 1
2...Pinch roller, 14...Writing instrument, 16...
Pen holder 18...Box, 20...Stock carousel, 22...Drive device, 24...Output shaft,
26... Bridge member, 28.29... Coil spring, 30
．． 32... Holding body, 34... Tray, 36... Remaining core, 40... Mounting plate, 42° 44... Side plate, 46.
48...pin, 28.29...biasing means, 50,5
2...Magnet. Patent applicant: Muto Kogyo Co., Ltd. Representative Patent Attorney: Aya Yu Nishijima

Claims (1)

[Claims] (1) Writing instrument 14 supported on the drawing head 10 so as to be able to rise and fall freely
A device for discharging residual lead inside a writing instrument 14 includes: a mounting plate 40; a pair of plate-shaped clamping bodies 30, 32 each having one end supported by the mounting plate 40 with a predetermined range of play;
urging means 28 and 29 for urging the plate-shaped clamping bodies 30 and 32 into close contact with each other; and the pair of clamping bodies 30;
A residual core processing device in an automatic drafting machine, comprising a drive means 22 for driving the paper 32 in a direction to spread it out.