JPH0574748U - Dust cover for moving device - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a dust cover of a moving device which has excellent durability and can be implemented at low cost. [Structure] A plurality of iron-made cover plates (11a) to (11e) each having a substantially constant length and gradually narrowing a width and having a U-shaped cross section are arranged in a longitudinal direction with respect to each other. The cover plates (11a) to (11d) are fitted in order downward so as to slide as guides, an engaging piece (14) is formed at one end of each of the cover plates (11a) to (11d), and each cover plate (11b) to (11e). ) Of the cover plates (11a) to (11d) adjacent to the other end of the cover plate (11a) to (11d). The stopper (16) is formed so as to abut against the other ends of the cover plates (11a) to (11d) adjacent to one end of (11e).

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a dust cover of a moving device which is widely used as a means for moving a processing machine of a machine tool.

[0002]

[Prior Art]

 Generally, in the moving device, as shown in FIG. 5, a ball screw (5) is rotatably supported between a pair of support columns (1) and (2) via bearings (3) and (4). The ball screw (5) is screwed through a nut member (7) provided on the lower side of the table (6), and the end of the ball screw (5) is fixed to one of the columns (1). It is configured to be connected to a dynamic motor (8). Then, the ball screw (5) is rotated by the drive motor (8), and the table (6) is moved in the axial direction of the ball screw (5) via the nut member (7), so that the table (6) is moved. The installed processing machine (9) is located at the processing location for processing.

By the way, in the moving device, foreign matters such as iron powder and dust are often attached to the ball screw (5) in a bad working environment. The adhesion of foreign matter such as iron powder and dust to the ball screw (5) causes a failure of the ball screw (5) and the nut member (7) to be caught. Therefore, in order to prevent this, conventionally, a bellows type dust cover (10) is mounted between the columns (1) and (2) and the table (6), and the dust cover (10) Foreign matter such as iron powder and dust is prevented from adhering to the ball screw (5) (see Japanese Utility Model Laid-Open No. 58-61373).

[0004]

[Problems to be solved by the device]

 By the way, since the bellows type dust cover (10) is formed mainly of a flexible rubber or synthetic resin material, it is relatively weak against heat, and the folds that are repeatedly bent and moved are not worn. It broke and had a problem with durability. In addition, the bellows type dust cover (10) is made to fit the finished size of the moving device, and is manufactured by special order each time, so there was a problem that the cost would increase.

The present invention has been made in view of the above problems of the conventional bellows type dust cover, and an object of the present invention is to provide a dust cover of a moving device which has excellent durability and can be implemented at low cost. Especially.

[0006]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention provides a plurality of iron-made cover plates, which are formed in a U-shaped cross section with their lengths being substantially constant and whose widths are gradually narrowed. The guide plates are fitted sequentially in a downward opening so as to guide and slide in the same direction, and a retaining piece is formed at one end of each cover plate, and the retaining protrusion of the cover plate adjacent to the other end is formed. Provided is a dust cover for a moving device, wherein an engaging piece that engages with one piece is formed, and a stopper that abuts on the other end of the cover plate adjacent to one end of each cover plate is formed to project.

[0007]

[Action]

 According to the present invention, when the processing machine is moved, one of the dust covers engages with the engaging piece of each cover plate to the retaining projection of the adjacent cover plate as the processing machine moves. Each cover plate is expanded by pulling the adjacent cover plate, and at the same time, one end of each cover plate comes into contact with the stopper of each adjacent cover plate as the processing machine moves, and the dust cover of the other dust cover is expanded. Push the cover plates in to stack the cover plates in layers.

[0008]

【Example】

 An embodiment of the present invention will be described below with reference to FIGS. 1 to 4, the same parts as those in FIG. 5 are designated by the same reference numerals, and a duplicate description will be omitted.

The dust cover (11) of the moving device according to the present invention comprises a plurality of, for example, five iron cover plates (11a) to (11e), and the cover plate (11a) is attached to the table (6). By connecting via the hinge (12) and the cover plate (11e) to the bearings (3) and (4) installed on the columns (1) and (2) via the bracket (13). , The columns (1) and (2) and the table (6), respectively. Each of the cover plates (11a) to (11e) of the dust cover (11) is formed into a U-shaped cross-section that has a substantially uniform length and a gradually narrowing width, and is arranged in the longitudinal direction. The guides are sequentially fitted in a downward opening so as to slide. An engaging piece (14) is bent downward at one end of each cover plate (11a) to (11d), and the other end of each cover plate (11b) to (11e) is formed. Each of the cover plates (11a) to (11d) is formed with a retaining projection (15) bent upward so as to engage with the engaging pieces (14) of the adjacent cover plates (11a) to (11d). Stoppers (16) are formed on both sides of one end of the cover plates (11b) to (11e) so as to come into contact with the side edges of the one ends of the adjacent cover plates (11a) to (11d). ing.

With such a structure, the ball screw (5) is rotated by the drive motor (8), and the table (6) is moved in the axial direction of the ball screw (5) through the nut member (7). When the machine (8) is moved to the right in the figure, the dust cover (11) mounted between the column (1) and the table (6) will move the cover plates as the machine (9) moves. The engaging pieces (14) of (11a) to (11d) are engaged with the retaining projections (15) of the adjacent cover plates (11b) to (11e), and the adjacent cover plates (11b). Each cover plate (11a) ~ (11e) is expanded by pulling ~ (11e), and the dust cover (11) mounted between the column (2) and the table (6) is the processing machine (9). As the cover moves, the side edges of one end of each cover plate (11a) to (11d) are The cover plates (11a) to (11e) are brought into contact with the stoppers (16) of the respective adjacent cover plates (11b) to (11e) and the adjacent cover plates (11b) to (11e) are pushed in. Are gradually overlapped. Therefore, foreign matter such as iron powder and dust can be prevented from adhering to the ball screw (5), and the movement of the processing machine (9) is not hindered.

Although the above description refers to a moving device using a ball screw, the present invention is not limited to this moving device, and may be applied to a moving device other than a ball screw, such as a chain rail. Can also be applied.

Further, in the above embodiment, the engagement piece (14) and the retaining projection piece (15) are formed by bending the cover plates (11a) to (11e) at both end portions downward and upward, In addition, the stoppers (16) are formed on both sides of one end of each of the cover plates (11b) to (11e) so as to project outward, but the engaging piece (14) and the retaining projection (15) are provided. The cover plates (11a) to (11e) are formed by bending both ends of both ends inward and outward, and the stopper (16) is projected to one end of each cover plate (11b) to (11e). It may be molded.

[0013]

[Effect of the device]

 According to the present invention, foreign matter such as iron powder and dust can be prevented from adhering to the drive section and the sliding section with an extremely simple structure, and the machine tool of the machine tool can be moved over a long period of time. It can be protected so that it can be held smoothly. In addition, even if foreign matter such as iron powder or dust gets into the moving mechanism part of the moving device from a slight gap in each cover, the cover can be easily removed, which facilitates cleaning and maintenance. Very easy. Moreover, since it uses a cover plate made of a thin iron plate, there is no risk of damage due to heat, etc., it has excellent durability, and it is extremely inexpensive to implement, and is suitable for moving devices of various sizes. You can easily get what you did.

[Brief description of drawings]

FIG. 1 is a front view of a moving device to which a dust cover of the moving device according to the present invention is applied.

FIG. 2 is a plan view of a dust cover of the moving device according to the present invention.

3 is a cross-sectional view taken along the line AA of FIG.

FIG. 4 is a perspective view showing a cover plate of a dust cover of the moving device according to the present invention.

FIG. 5 is a front view of a moving device to which a conventional bellows type dust cover is applied.

[Explanation of symbols]

 5 Ball screw 6 Table 7 Nut member 8 Drive motor 9 Processing machine 11 Dust cover 11a to 11e Cover plate 14 Engagement piece 15 Projection piece for retaining 16 Stopper

Claims (1)

[Scope of utility model registration request] 1. The respective lengths are arranged to be substantially constant, and
A plurality of iron-made cover plates each having a U-shaped cross-section with a gradually narrowing width are sequentially fitted into the downward opening so as to guide and slide in the longitudinal direction, and one end of each cover plate is formed. And a cover plate adjacent to one end of each cover plate, which is formed with an engagement piece that engages with the above-mentioned projection for removal of the cover plate adjacent to the other end of the cover plate. A dust cover for a moving device, characterized in that a stopper that comes into contact with the other end of the is formed in a protruding manner.