JPH0625356Y2 - Guide shaft sliding structure for XY plotter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to an XY plotter for selectively moving and moving up and down a pen to obtain a predetermined figure. In particular, it relates to a guide shaft sliding structure for moving a pen.

[Conventional technology]

A conventional XY plotter of this type has a carriage having a pen and a sliding mechanism for sliding the carriage along a guide shaft. The sliding mechanism includes a slider that is a sliding contact portion of the guide shaft of the carriage, and the slider has a bearing for sliding the guide shaft.

In this case, there is a case where sliding addition fluctuation occurs due to dirt on the guide shaft, for example, dust or adhesion of sliding scraps on the guide shaft.

For this reason, conventionally, there is a slider provided with a shield plate. FIG. 2 is a sectional view showing this conventional slider structure. In the figure, 1 is a slider, 11 is a sliding bearing,
Reference numeral 12 is a shield plate, and 2 is a guide shaft.

A bearing 11 is fitted in the slider 1. Then, the bearing 11 slides on the guide shaft 2. At this time, the shield plate 12 removes dust and the like adhering to the guide shaft 2.

[Problems to be solved by the invention]

Thus, in the conventional slider, the shield plate 12
Although the adverse effect of dust and the like was removed by making the sliding contact with the guide shaft 2, a frictional force was generated between the shield plate 12 and the guide shaft 2, resulting in an increase in load. Especially, the static friction becomes large, and there is a drawback that it is not suitable for a plotter in which minute displacement is repeated for drawing a precise drawing.

The present invention aims to improve this point.
The present invention provides a slider structure having a shield plate that can be used in a Y plotter.

[Means for solving problems]

In an XY plotter having a slider that moves along a guide axis and selectively driving a pen to obtain a predetermined figure, the slider is a bearing that slides along the guide axis, and the bearing. Has spring-supported shield plates at both ends.

[Action]

Since the shield plate is supported by the spring, the static friction of the bearing and the static friction of the shield plate act with a time lag compared to the conventional fixed shield plate structure, so the effect is reduced. .

Further, when the displacement of the slider is very small, the shield plate is not displaced and only the slider is displaced, so that the static frictional force of the shield plate does not influence.

[Embodiment] FIG. 1 is a sectional view of a slider structure, which is an explanatory view showing an embodiment of the present invention. The slider structure shown in FIG. 1 is obtained by providing a spring 13 in the conventional device shown in FIG.

One end of this spring 13 is locked to the shield plate 12, and the other end is locked to the slider 1.

The slider 1 moves along the guide shaft 2. When the slider 1 moves greatly, the slider 1 first starts moving, and the shield plate 12 follows it. Therefore, the movement at this time is deviated in time, and the static friction between the bearing 11 and the shield plate 12 is dispersed.

Further, when the slider 1 moves slightly, the shield plate 12
Is not displaced, and the static friction of the shield plate 12 has no effect.

In this way, the slider 1 can remove dust and the like attached to the guide shaft 2 by the shield plate 12.

The slider 1 is mounted on, for example, a carriage (not shown) having a pen and functions as a device that moves the pen by a predetermined amount by an electric signal.

[Effect of device]

As described above, according to the present invention, it is possible to realize a guide shaft sliding structure of an XY plotter that is not affected by dust or the like adhering to the guide shaft 2 and is less affected by static friction.

[Brief description of drawings]

FIG. 1 is a structural explanatory view showing an embodiment of the present invention, and FIG. 2 is an explanatory view showing a conventional device. 1 ... Slider, 12 ... Shield plate, 13 ... Spring, 2 ... Guide shaft

Claims (1)

[Scope of utility model registration request] 1. A slider, which moves along a guide axis,
In an XY plotter that selectively drives a pen to obtain a predetermined figure, the slider has a bearing that slides along the guide shaft, and spring-supported shield plates at both ends of the bearing. Guide shaft sliding structure for XY plotter.