JPS60201856A - Dust-proof sliding table - Google Patents

Abstract

PURPOSE:To exhibit the dust-proof effect with limited space irrespectively of the corss-section of the inner mechanism by combining a movable/shrinkable cover, a fixed cover and a guideboard effectively in a sliding table of perpendicularly crossing robot. CONSTITUTION:Upon motion of slider 2 of sliding table to the right, the movable/shrinkable cover is compressed to the right against a fixing board 11 while upon motion to the left, the movable cover 7 is contracted against the fixing board 10 while utilizing the space of motor cover 12. When guding/supporting the movable/shrinkable cover 7 through a fixed cover 6 and a guide board 8 in such a manner, the upper space of the motor cover 12 can be utilized effectively for the containing space of movable cover 7 under contraction by covering the guiderail 2 and the ball screw mechanism 3 not individually but entirely resulting in the saving of space and the improvement of the dust-proof effect.

Description

[Detailed description of the invention] This relates to a mold sliding table.

Conventional configuration and its problems Linear sliding mechanisms used in Cartesian robots are generally
It consists of a drive motor, a ball screw that converts rotational motion into linear motion, a slider on which a moving object is mounted, and a guide rail that guides the linear motion of the slider.

If the guide rail that guides the linear motion of the slider has a circular cross section, it is usually sufficient to provide as many movable retractable covers (bellows, etc.) with a circular cross section as the number of guide rails. However, there is no optimal structure or installation method for a dustproof cover for a linear sliding mechanism that has a special cross-sectional structure. A guide plate that guides the movable contracting cover, fixed cover, and movable cover in the sliding mechanism consisting of the Mobi slider, which provides a dust-proof sliding table that can be realized at a low price and in a small space without being limited by the shape. It is composed of
Dust-proofing effects can be achieved with a small amount of space in the direction of movement.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

Figure 1 is a cross-sectional view of the sliding table before taking dust-proof measures. 1 is a guide rail with a special cross section in which two rolling bearing guides are integrally formed, and 2 is a guide rail along the guide rail. A slider that moves in a straight line and is used to load a moving object;
3 is a ball screw mechanism that provides drive to the slider, 4 is a fixed side cover, and 6 is a fixed top cover.

If the sliding table configured as shown in FIG. Impairs sliding performance.

In FIG. 2, 6 is a fixed (side) cover, 7 is a movable retractable cover, 8 is a guide plate attached to the fixed (side) cover 6 and supports and guides the movable cover 7, and 9 is a guide plate.
is a mounting plate for fixing one end of the movable cover 7 to the slider 2.

In FIG. 3, 10 is a movable cover mounting plate on the drive motor side, 11 is a movable cover mounting plate on the opposite side of the motor, and 1
2 is the motor section.

Regarding the dust-proof sliding table configured as above,
The operation will be explained below.

3 and 4 illustrate the case where the slider 2 moves to the right, the movable retractable cup is compressed to the right and contracted between it and the mounting plate 11. Furthermore, when the slider 2 moves to the left, the movable cover 7 is contracted between it and the mounting plate 10 by using the space of the motor cover 12.

As described above, according to this embodiment, the guide rail 2 and the ball screw mechanism 3 can be individually cut by guiding and supporting the movable contracting cup 7 by the fixed cover 6 and the guide plate 8 in FIG. By covering the whole part instead of covering the movable cup 7, the storage space when the movable cup 7 is retracted can be effectively utilized in the space above the motor cup A-12.

Furthermore, when attaching movable retractable covers to the guide rail 1 and ball screw mechanism 3 individually, the length of the guide rail and ball screw part must be adjusted because the retractable length of the movable retractable cover requires extra length. Although there is a drawback that the length of the entire moving table becomes large, the "Q" of this invention can eliminate the above-mentioned drawback, and the guide rail 1 and ball screw part 3 are constructed of high-precision, high-priced parts. Therefore, according to the present invention, which requires only a short length, it is possible to improve the dustproof effect of a linear sliding table used in a Cartesian coordinate system robot at a low cost.

As other embodiments, Fig. 6 shows a configuration in which the slider part is fixed and the guide rail part moves, and Fig. 6 shows an embodiment in which the fixed cover covers the bottom of the guide rail and the shape of the movable cover guide plate is different. However, by effectively combining the movable retractable cover, the fixed cover, and the guide plate, the length of the sliding guide rail and drive parts can be reduced by effectively combining the movable retractable cover, the fixed cover, and the guide plate. Dust-proofing measures can be taken at a low cost and in a small space without increasing the stroke length beyond the effective stroke.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a conventional sliding table having a special cross section, FIG. 2 is a sectional view of an embodiment of the present invention, and FIG. 3 is a plan view of the entire sliding table in an embodiment of the present invention. FIG. 4 is an overall front view of the same sliding table, and FIGS. 5 and 6 are sectional views of other embodiments of the present invention. 1... Guide rail, 2... Slider, 3... Ball screw mechanism, 6... Fixed cover, 7... Movable contraction cover, 8...
- Guide plate, 9... Mounting plate, 10... Motor side mounting plate, 12... Motor cut-. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 2 Figure 381 Figure 4

Claims (1)

[Claims] A slider that carries an object and moves, a guide rail that slides and guides the slider, a ball screw mechanism that drives the slider, a movable shrinkable cover, a guide plate that guides the movable shrinkable cover, and a fixed cover that holds the guide plate. A dust-proof sliding table comprising the above-mentioned guide rail and ball screw mechanism entirely covered with a movable shrinkable cover and a fixed cover.