JPH04193598A - Automatic lead supply apparatus of pen plotter - Google Patents

Abstract

PURPOSE:To certainly replace a lead in low cost by moving a lead holder to the part directly under a lead pressing rod at the time of the replacement of the lead and pushing out one lead from a lead stocker by the lead pressing rod to insert the same in the lead holder. CONSTITUTION:A turret 10 is rotated to move a lead holder 9 to the part directly under a lead pressing rod 3. When pulleys 6, 6' are rotated by the driving of a motor 13, the belt trained over the pulleys is rotated and a slide 4 falls. When the slide 4 falls, the lead pressing rod 3 mounted on the slide 4 also begins to fall. At the same time, a lead holder is moved to the part directly under the lead pressing rod 3. When the lead pressing rod 3 falls, the pencil lead 12 in a lead stocker 1 is pushed but, since a lead holding jig 8 made of rubber is provided in the leading end of the lead stocker 1, the pencil lead gradually falls without falling suddenly. The lead gradually falls to be inserted in a consumable lead holder 9 and the lead received in the holder hitherto is pushed out to be allowed to fall into a residual lead storage container.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to an automatic core feeding device for a pen plotter that automatically loads a consumable writing lead such as a pencil into a lead holder of a drawing head for an automatic drawing machine. It is related to.

[Conventional technology]

Conventionally, this type of device has a structure in which a consumable writing lead such as a pencil is automatically loaded into a lead holder by letting the consumable writing lead fall naturally, as shown in Japanese Patent Application Laid-Open No. 01-101196, or They were inserted manually one by one.

[Problem to be solved by the invention]

Conventional automatic core feeders for pen plotters require a chuck mechanism that switches between holding and releasing the core in the core stocker, and in order to prevent natural fall, automatic drawing heads for automatic drafting machines require a chuck mechanism to switch between holding and releasing the core in the core stocker. There was a drawback that the structure was complicated due to the provision of a mechanism for vibrating the core holder.

The present invention has been made to solve the above-mentioned problems of the prior art, and an object of the present invention is to provide an automatic core feeder for a pen plotter that can load a lead into a lead holder with a simple configuration.

[Means to solve the problem]

The above object is achieved by providing a lead stocker mounting portion for mounting a lead stocker containing a plurality of consumable writing leads, and a lead pressure rod driven by a drive source.

[Effect]

When replacing the lead, the lead holder is moved directly below the lead pressing rod, one lead is pushed out from the lead stocker by the lead pressing rod, and the lead is inserted into the lead holder.

〔Example〕

Hereinafter, the present invention will be explained by giving examples.

FIG. 1 is an overall sectional view of the automatic core feeder of the present invention, FIG. 2 is a perspective view of a core stocker, and FIG. 3 is an internal sectional view of the core stocker. Reference numbers in each figure indicate common objects.

The automatic core feeder for a pen plotter of this embodiment includes a lead stocker 1 for storing pencil leads 12, a holding part 2 for holding the lead stocker 1. a main body 2 equipped with l, a lead pressure rod 3 that pushes out the pencil lead 12 from the lead stocker 1, a slide 4 that moves the pressure rod 3 up and down by the drive of a motor, and a consumable device into which the pushed out pencil lead 12 is inserted. It is composed of a writing instrument holder 9.

As shown in FIGS. 2 and 3, the core stocker 1 has a bottom plate portion 1.
g, wall portions 1e, If, and a side wall portion 1d. still,
A side wall facing the side wall portion 1d is not shown. Bottom plate part 1
A lead discharge hole 1 with approximately the same diameter as a pencil lead is provided near the side wall 1d of g.
a is provided, and a tapered portion lb is provided inside the stocker of the core discharge hole 1a. The interval between the wall portions 1e and 1f is set to a width smaller than twice the diameter of the core 12 at least in the vicinity of the core discharge hole 1a. Inside the stocker, a spring 22 connects the side wall 1d from the unillustrated side wall to the side wall 1d.
A pencil lead pressing plate 21 is provided which is pressed toward the pencil lead. Therefore, the pencil lead 12 loaded in the lead holder 1
are aligned in the lead holder 1, descend slightly at the tapered part 1b,
It descends to at least the core holder 8 made of rubber and stops there.

When replenishing the lead holder 9 with the lead 12, first, the turret 10 is rotated to move the lead holder 9 directly below the lead pressing rod 3. When the pulley 6.6" rotates due to the drive of the motor 13, the heald attached around the pulley rotates and the slide 4 descends. When the slide 4 descends, the core pressure rod 3 attached to the slide 4 also moves. It begins to descend.At the same time, the lead holder moves directly below the lead pressing rod 3.

When the lead pressurizing rod 3 descends, it pushes the pencil lead 12 in the lead stocker l, but since a lead holder 8 made of rubber or the like is attached inside the tip of the lead stocker l as shown in Fig. 3, The pencil lead gradually descends without descending suddenly. The lead is gradually lowered and inserted into the consumable lead holder 9, pushing out the previously contained lead and dropping into the remaining lead storage container. When the slide 4 descends, a part of the slide 4 enters into the IC provided in the lead holder and descends. Therefore, the push rod 3 can be made shorter than the length of the pencil lead 2, and the entire length of the automatic core feeder can be shortened. This completes the replacement of the core. - When the book core 12 is pushed out,
The core 12 is pushed by the spring 22, the next core is pressed against the side wall 1d, and the state is set to wait for the next replacement operation.

In this embodiment, the interval between the wall portions 1e and If is set constant, but it is sufficient that the cores 12 are aligned near the core discharge hole 1a, so it is not necessary to keep the interval constant. . For example, the gap on the side wall (not shown) in FIG. If you set the width to be narrower than double,
A plurality of pencil leads are not lined up near the lead discharge hole 1a, and each pencil lead can be supplied to the lead discharge hole 1a one by one.

〔Effect of the invention〕

As described above, according to the present invention, when replacing the lead holder, there is no need for a chuck to drop the pencil lead, and
There is no need to vibrate to allow the core to fall naturally, and the core can be replaced reliably at low cost.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing a schematic configuration of an embodiment of an automatic core feeder for a pen plotter according to the present invention. FIG. 2 is an enlarged view of the stocker mounting portion, and FIG. 3 is a sectional view of the lead stocker. 1... Lead stocker, 2... Pencil lead, 3... Lead pressure rod, 4... Slide, 5... Slide guide,
619. Pulley, 7...Limit switch, 8...
- Lead holder, 9... Pencil lead holder, 10... Turret, 11... Remaining lead storage container, 21... Pencil lead pushing plate, 22... Spring.

Claims (3)

[Claims] (1) Storing a plurality of consumable writing leads in a lead stocker, and sequentially taking out the consumable writing leads from the lead stocker,
An automatic core feeder for a pen printer attached to a lead holder, comprising a lead stocker attachment part for attaching the lead stocker, and a lead pressure rod driven by a drive source, and the lead holder is attached to the lead pressure rod when replacing the lead. An automatic core feeding device for a pen plotter, characterized in that the pen plotter moves directly under the core, pushes out one of the consumable writing cores from the core stocker with the core pressure rod, and attaches the lead holder. (2) In claim 1, the lead stocker is provided with a lead discharge hole having approximately the same diameter as the consumable writing lead on the bottom surface near one side wall, and at least the lead discharge hole in the lead holding portion of the lead stocker. An automatic core feeder for a pen plotter, characterized in that a width in the vicinity is set to be smaller than twice the diameter of the consumable writing lead. (3) The automatic core feeder for a pen plotter according to claim 2, wherein the lead stocker includes a spring member that presses the consumable writing lead against the one side wall.