JPH04151299A - Pen stock of x-y plotter - Google Patents

Abstract

PURPOSE:To ensure that no foreign matter is allowed to find its way inside and that a pen stock part is constructed in a compact structure by making a pen cap holder move vertically and at the same time, providing a cover extending across a movement space at the lower part of the cap holder during normal time. CONSTITUTION:A pen nib is received into the pen cap 30 of a pen cap holder 20 and the pen 50 is held during a normal operating state. Under this state, a seat plate 21 for the pen cap holder 20 stretches across a movement space part 60 with only a slight gap left between the seat plate 21 and a drawing board when the former moves, thus allowing contamination by foreign matter. The pen cap holder 20 equipped with the seat plate 21 is pushed down by a cam 24 with an operating piece attached to a pen carriage, prior to pen replacement. Then when the pen cap 30 is parked from the pen nib part of the pen 50, a guide groove 25 is introduced into a guide stripe 15 of the frame side 11 at both lateral part positions of the pen cap 30. Thus the pen descends straight without becoming offset, resisting against the propelling force of a compression spring 35 which acts upon the lower surface of the seat plate 21.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to improvements in penstocks in X-Y plotters.

(Prior Art) The structure of the pen stock section in a conventional X-Y plotter is such that, in response to the advance and retreat of the pen holder provided in the pen carriage, a portion of the pen holder of the pen stock and a pen holder on the Ben carriage side are connected. The movable parts are operated relatively to move the pen to one side and hold it there. This pen stock side is equipped with a mechanism that lowers the pen cap holder in order to lower the pen cap and open the pen tip.As an example, the pen cap shown in Figure 6 can be operated. There are lever type ones.

(Problem to be Solved) In the pen stock section 10A having such a configuration, when the pen 50 is delivered between the pen holder 3 and the pen holder 41 of the carriage 40, the operation piece attached to the carriage 40 side and protruding 42, pen cap holder 4
The operation piece 4 is brought into contact with the cam 4' attached to the
2 moves forward, so that the pen cap holder 4 is pushed down via the cam 4', so that the pen cap holder 4 has a fulcrum 5' attached to a lever provided at the rear of the pen stock IOA section, as shown in Figure 7. It is attached to the tip of 5. Reference numeral 2 is a pen stock frame.

For this purpose, a groove 8 is formed on the lower side of the pen stock IOA portion so that the pen cap holder 4 can descend without any trouble.

Therefore, it is easy for foreign matter to get into the groove 8, and -
Once the foreign matter enters the groove 8, it is difficult to remove it.

If foreign matter gets into the groove 8, it will interfere with the use of the plotter.

Furthermore, since the pen cap holder 4 is structured to rotate about the fulcrum 5', there is also a drawback that the installation width of the pen stop 7 10A section is increased.

In order to solve these problems, the present invention allows the pen cap holder at the pen holder to move vertically, and also includes a cover at the bottom of the pen cap holder to cover the movement space during normal operation. An object of the present invention is to provide a pen stock for a χ-Y plotter configured to prevent foreign matter from entering from the outside and to allow the pen stock portion to be compactly assembled.

(Means for Solving the Problems) The present invention provides a pen stock for an X-Y plotter equipped with a drawing board, in which a pen cap holder is moved only in the vertical direction along a guide strip attached to a partition wall of a pen stock frame. A movable seat plate, a pen cap mounting seat to which a pen cap can be attached replaceably on the seat plate, and a pen cap mounting seat on the seat plate that allows the pen cap to be lowered and retracted by contact with an evacuation operation piece attached to the pen carriage side. A cam protruding from the
and a compression spring interposed between the lower upper surface of the pen stock frame and the lower surface of the seat plate to normally hold the pen cap in a fixed position; This is a pen stock for an X-Y plotter, characterized in that the top is covered.

The guide strip of the pen cap holder attached to the partition wall of the pen stock frame in the present invention has its upper end bent sideways along the partition wall, and the bent portion fits into the guide strip and is guided up and down. It is preferable that the upper limit of the pen cap holder is 7 bars.Also, it is preferable to provide a point on the underside of the seat plate of the pen cap holder centered on a perpendicular line passing through the center of the pen cap attachment, and The center of the protruding protrusion and the center of the location are on the same perpendicular line, and the upper end of the compression spring is engaged with the recess, and the lower end thereof is engaged with the protrusion, so that it is connected to the lower part of the penstock frame. It is preferable to interpose a compression spring between the pen cap holder and the pen cap holder.

(Function) Since the device of the present invention is configured in this way, the retraction space is always covered by the seat of the pen cap holder. When transferring pens between the pen holder of the Ben Carriage and the pen stock section (exchanging pens), the pen holder on the Ben Carriage side moves forward.
When the pen cap holder is pushed down via the cam by the operation piece attached to the pen holder, the pen cap holder will be stitched straight along the guide strip provided on the partition wall of the pen stock frame and will be sewn into the pen tip. Evacuate from. Once Ben's replacement operation is complete, it will immediately rise and return to normal.

(Effects of the Invention) According to the pen stock of the present invention, the pen cap holder moves only in the vertical direction and retreats from the pen tip when the pen is replaced, so the overall width is narrow. It can be put together compactly. In addition, since the seat of the pen cap holder covers the upper surface of the moving space of the pen cap holder and moves up and down while maintaining that position, foreign objects may not enter the moving space of the pen cap holder. Since there is no foreign material falling into the space, there is no problem.

(Example) Hereinafter, one example of the pen stock of the present invention will be described with reference to the drawings.

FIGS. 1-4 depict a portion of the penstock of the present invention. The frame 11 of the pen stock 1o is divided into a required number of compartments (generally accommodating eight pens) by partition walls 12. In each section 13 divided by the partition wall 12, a pen cap holder 20 is installed on the side surface of both partition walls 12, as shown in FIG.
It is incorporated by sliding it together. As shown in FIG. 2, the top of each section 13 of the frame 1 has a notch 1 through which the shaft 51 of the ben 50 can enter and exit the shelf 14.
6 each. As can be seen from FIG. 1 and FIG.
The shaft portion 51 is received approximately halfway around the circumference. Further, the flange 52 of the ben 50 comes into contact with the shelf part 14, and a rib 18 located below the shelf part 14 and protruding from the back plate part 17 assists in keeping the axis of the ben 50 perpendicular. It's starting to drip. In addition, each section 13 of the frame 11
A lower spring locking piece 1 is provided on the bottom upper surface of each of the lower spring locking pieces 1 at a position that coincides with the vertical axis when the ben 50 is housed and held.
9 is provided protrudingly.

As shown in FIGS. 1 to 3, the pen cap holder 20 is attached to each section i! of the frame 11. 1i1
3 and is disposed so as to be movable up and down along guide strips 15 protruding from the partition walls 12 on both sides. The shape of the pen cap holder 20 has a width that fits within each section 13 of the frame 11, as shown in FIGS. 5(a), 5(b), and 5(c). ) has a rectangular seat plate 21 that protrudes by an appropriate amount, and a pen cap mounting seat 22 is arranged on the seat plate 21 at an appropriate interval. A holding hole 23 is provided, a pair of cams 24 are provided on both sides, and a guide groove 25 whose center is on a vertical plane crossing the center of the pen cap holding hole 23 is formed on the outer surface of the cam 24 forming plate part. .25 is attached. Further, the pen cap holding hole 23 is provided on the lower surface of the seat plate 21.
Location 2 with the center located on the perpendicular line passing through the center of
6 is provided. Note that the opening 23' of the pen cap holding hole 23 forms a narrow portion, and the pen cap 3
0 (generally made of a soft material) is inserted into the pen cap holding hole 23 from the opening 23' side, and after that it cannot be easily removed.

Further, the seat plate 21 is widened at the front side so as to cover the movement space 6o when the pen cap holder 20 moves up and down. Furthermore, the pen cap holder 20 has a guide groove 25 provided on the side surface of the guide strip 15 protruding from the side surface of the partition wall 12 of the frame 11.
are engaged with each other, and both ends are engaged with the position 26 on the lower surface of the seat plate 21 and the protrusion 19 provided on the upper surface of the lower part of the frame 11. The bent portion of the strip 15 toward the open side, that is, the bent portion 15', comes into contact with the upper end of the guide groove 25 on the pen cap holder 20 side, and functions as a stopper. Therefore, under normal conditions, the pen cap 30 and its holder 20 are inserted into the guide groove 25 as shown in FIG.
remains stationary at a position where it abuts against the bent portion 15' of the guide strip 15. In addition, the reference numeral 11" in the figure indicates the plotter main body l.
It is a mounting seat for attaching to.

The pen stock 1° of the present invention configured as described above is used while being attached to the upper surface of the main body 1 side of a plotter equipped with a drawing board, and normally, as shown in FIG. A ben 50 is held in a pen cap 30 with a pen tip received therein.

In this state, the seat plate 21 of the pen cap holder 20 covers the moving space 60, and there is only a small gap between it and the drawing board (on the right side in the figure) during movement, and there is no room for foreign matter to enter. do not have. In addition, the pen cap holder 20 equipped with this seat plate 21 has a cam 24, which is similar to the conventional one, by using an operation piece attached to the Ben carriage (not shown) to push down the pen cap holder 20 prior to replacing the Ben 50. When retracting the pen cap 30 from the tip, the frame l is placed at both sides of the pen cap 30.
The guide groove 25 is guided by the guide strip 15 on the l side, and the seat plate 21
It descends straightly without eccentricity against the thrust of the compression spring 35 acting on the lower surface.

Therefore, even if a lateral force is applied to the circumferential surface of the cam 24 from the operation piece on the carriage side, the pen cap holder 20 descends without eccentricity, and the moving space 60 is always covered by the seat plate 21. There is no obstacle due to the entry of foreign matter, and the bent stock frame 11 is narrow and compact due to its construction, so that the bent stock portion can be formed without taking up extra space.

Note that when the pen replacement operation is completed and the operating force on the cam 24 is removed, the pen cap holder 20 is quickly raised by the force of the compression spring 35, and the pen cap 30 is pressed against the tip of the ben 50 and the pen tip is removed. It will protect you properly.

[Brief explanation of drawings]

Fig. 1 is a longitudinal sectional view of the Benstock of the present invention, Fig. 2 is a partially cutaway plan view of the Benstock, and Fig. 3 is a partially omitted plan view of the Benstock.
The figure is a partially omitted right side view of Fig. 1, Fig. 4 is a vertical sectional view of the main part of the Benstock frame, and Fig. 5 (a) (b) (c
) are views showing the side, plane, and central vertical cross sections of the pen cap holder, Figure 6 is a vertical cross section of a conventional pen stock part, and Figure 7 is a view of the pen shown in Figure 6 when replacing the pen. It is a diagram. ■...Body 10...Pen stock 11...Frame 12
...Partition wall 13...Dividing section 14...
Shelf portion 15... Guide strip 15''... Bent portion of guide strip 16... Notch portion 17... Back plate portion
18... Rib 19... Protrusion 20... Pen cap holder 21... Seat plate 22... Pen cap mounting seat 23...
・Pen cap holding hole 23'... Pen cap holding hole opening 24... Cam 25... Guide groove 26... Location 30
... Pen cap 35 ... Compression spring 50
... Pen 51 ... Ben's shaft 52 ... Flange 6
0...Moving space part

Claims (1)

[Claims] 1. In a pen stock for an X-Y plotter equipped with a drawing board, the pen cap holder is comprised of a seat plate that is movable only in the vertical direction along a guide strip attached to a partition wall of the pen stock frame. , a pen cap mounting seat on which a pen cap can be attached replaceably, and a cam protruding from the seat plate so that the pen cap is lowered and retracted by contact with an evacuation operation piece attached to the pen carriage side. , and a compression spring interposed between the lower upper surface of the pen stock frame and the lower surface of the seat plate to normally hold the pen cap in place; An X-Y plotter penstock characterized by covering the upper part of the space. 2 The guide strip of the pen cap holder attached to the partition wall of the pen stock frame has its upper end bent sideways along the partition wall, and the bent portion fits into the guide strip to guide the pen up and down. The penstock for an X-Y plotter according to claim 1, which serves as an upper limit stopper for a cap holder. 3 A recess centered on a perpendicular line passing through the pen cap attachment center is provided on the bottom surface of the seat plate of the pen cap holder, so that the center of the projection protruding from the upper surface of the lower part of the pen stock frame and the center of the recess are on the same perpendicular line. 3. The compression spring according to claim 1 or 2, wherein the compression spring is interposed between the lower part of the pen stock frame and the pen cap holder such that the upper end of the compression spring is engaged with the recess and the lower end thereof is engaged with the protrusion. X-Y plotter pen stock.