JPH07158639A - Cover unit for rectilinearly sliding bearing - Google Patents

Abstract

PURPOSE:To provide a cover unit for a rectilinearly sliding bearing making the dust protection of the rectilinearly sliding bearing complete and enabling oiling to the sliding face with simple work. CONSTITUTION:A cover unit for a rectilinearly sliding bearing formed of a sliding rail 1 and a sliding body 2 is constituted of a moving bracket 3 formed into inverted recessed shape cross section with the sliding body 2 mounted in the recessed part, a cover plate 9 of U-shape cross section formed of the side faces 9b and the upper face 9a provided across plates 8 erected at both end parts with the sliding rail 1 placed in between, and rising cover plates erected opposedly at both side faces with the sliding rail 1 placed in between. The lower end part of the side face 9b and the upper end part of the rising cover plate are opposed to each other. The moving bracket 3 is piercingly provided with a through hole 11 for inserting the cover plate 9 of U-shape cross section, and an oiling path is formed in the state of piercing the moving bracket 3.

Description

Detailed Description of the Invention

[0001]

The present invention relates to an industrial robot and NC.
A cover used for a linear sliding bearing that linearly guides a slidable body in a sliding portion of a machine tool,
More specifically, the present invention relates to a linear sliding bearing cover unit that protects the linear sliding bearing from foreign matter and dust.

[0002]

2. Description of the Related Art In processing a moving vehicle or the like, a workpiece to be conveyed is welded by a processing tool such as an industrial robot. The means for feeding the processing tool to a processing position. As the bearing, a so-called linear sliding bearing is used. However, if dust or foreign matter enters the linear sliding bearing, it may cause abnormal wear or shorten the service life. Therefore, it is necessary to prevent harmful foreign matter from entering. Conventionally,
As a dustproof measure for the linear sliding bearing, see Fig. 1 (a).
There are a type with a dedicated bellows attached as shown in (1) or an extension type with a step rod as shown in (b).

[0003]

However, in the bellows type, there is a risk that foreign matter may enter from below, and there is a possibility that foreign matter may enter from a dust pool on the upper surface due to holes formed by spatter during welding. There was On the other hand, in the telescopic type using a stepped rod, there is a fear that dust or cutting chips may enter the sliding portion and the sliding may not go smoothly. In view of the above problems, the present invention was created with the object of improving it, while having a simple configuration,
Completely protect the bearing for linear sliding from dust, and
It is an object of the present invention to provide a cover unit for a linear sliding bearing, which is capable of lubricating a sliding surface with a simple operation.

[0004]

In order to achieve the above object, the technical means adopted by the present invention is a cover unit for a linear sliding bearing comprising a sliding rail and a sliding body,
It is composed of a moving bracket having an inverted concave cross-section and having the above-mentioned sliding member mounted in the concave portion, and a side and an upper side which are laid between the plates standing on both ends of the sliding rail. It is composed of a cover plate having a U-shaped cross section and a rising cover plate which is erected so as to face both sides of the sliding rail so as to stand upright with the lower end of the side. The upper ends of the cover plates are opposed to each other, and an insertion hole for inserting the cover plate having a U-shaped cross section is formed in the moving bracket so that the moving bracket inserts the cover plate. It is characterized in that it is configured to slide in a slidable state, and that the moving bracket is provided so as to form an oil supply path.

[0005]

Since the present invention is constructed as described above, the linear sliding bearing is completely dustproof by the cover plate. Since the moving bracket has an insertion hole through which the cover plate having a U-shaped cross section is inserted, the moving bracket can slide in a state where the cover plate is inserted, The cover plate does not hinder sliding of the sliding body. Since the moving bracket is internally provided with the lubrication path, it is possible to perform lubrication in the state where the cover plate is mounted without providing a separate oil supply hose.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to an illustrated embodiment. 2 and 3 are a perspective view and a front view, respectively, showing the cover unit of the linear sliding bearing according to the present invention. The linear sliding bearing is composed of a sliding rail 1 and a sliding body 2, and the sliding body 2 is mounted on a plate 4 which is erected on a mounting base 3 in the sliding direction of the sliding body. It slides along the sliding rail 1 via a ball (not shown). The upper surface of the sliding body 2 is attached to the concave portion of the moving bracket 5 having an inverted concave cross section by screws 6, and the moving bracket 5 slides as the sliding body 2 slides. Reference numeral 7 denotes a sliding table mounted on the upper surface of the moving bracket 5, which is used by attaching a sliding body such as an industrial robot or NC machine tool.

Plates 8 and 8 sandwiching the plate 4 and the sliding rail 1 are erected so as to face each other at both front and rear ends in the sliding direction of the sliding body 2 of the mounting table 3. Between the plates 8 and 8, a cover plate 9 having a U-shaped cross section, which is composed of an upper side 9a and side sides 9b and 9b, is laid across and attached by screws 10. The moving bracket 5 is provided with an insertion hole 11 having a U-shaped cross section through which the cover plate 9 is inserted. The moving bracket 5 slides with the cover plate 9 inserted. Has become. A standing cover plate 12 is erected on both sides of the plate 4 so as to sandwich the plate 4 and face each other. The rising cover plate 12 has an L-shaped cross section composed of a bottom side 12a and a rising side 12b.
A screw hole 12c is provided in the mounting hole 3 and is attached to the mounting table 3 via a screw 13. The side edges 9b and 9b of the cover plate 9 having a U-shaped cross section and the rising edge 12 of the rising cover plate 12.
b has a part facing each other at its end, and completes the dustproof effect.

Numeral 14 is a ball screw, which is driven by a motor 15 to slide a bearing through a linear sliding bearing.
It is designed to slide the bull 7. Reference numeral 5'denotes a moving bracket for mounting a ball screw, which has an inverted concave cross-section and is configured such that the screw shaft 14a moves forward and backward in the concave portion, and a front face for mounting the ball screw 14 thereon. -To 5'a is attached. Plates 8 ′ and 8 ′ are erected at both front and rear ends in the sliding direction of the sliding body 2 of the mounting table 3 so as to face each other with the screw shaft 14 a interposed therebetween.
A cover plate 9'having a U-shaped cross section having an upper side 9'a and side sides 9'b and 9'b is spanned between the 8'and the screw 1
It is attached at 0 '. The moving bracket 5'has a cover
Insertion hole 11 'having a U-shaped cross section for inserting the plate 9'
Is provided so that the moving bracket 5'reciprocates with the cover plate 9'inserted.

The moving bracket 5 is provided with an oil injection port 16 and a discharge port 18, and the both 16 and 18 are connected to each other by an oil injection path 17 formed through the inside of the wall thickness. Outlet 18
Is communicated with an oiling port provided on the sliding body 2 by a pipe 19, and oil is supplied to the sliding body 2 by removing oil from the oiling port 16 formed on the moving bracket 5 without removing the cover plate 9. Can be supplied. In this embodiment, the moving bracket 5 is connected to the holes drilled from three locations to form the lubrication path 17, and the two perforations are the lubrication port 16 and the discharge port 18, and one perforation port is sealed. I am doing it. A similar lubrication path 17 'is formed in the moving bracket 5'of the ball screw 14 so that oil can be supplied to the ball screw 14 without removing the cover plate 9'. ing. In order to prevent oil leakage, it is preferable that the movable brackets 5 and 5'be integrally formed of cast iron.

The cover of the linear sliding bearing of the present invention
Since the unit is constructed as above, the sliding
The ball 2 or the ball screw shaft 14a is located in the recess of the cover plates 9 and 9'having a U-shaped cross section to prevent dust and foreign matters from entering the linear sliding bearing and the ball screw. can do. Since the moving brackets 5 and 5'are provided with through holes 11 and 11 'through which the cover plates 9 and 9'having a U-shaped cross section are inserted,
Although the cover plate is provided, it does not hinder the movement of the sliding table 7. On both sides of the plate 4, a rising cover plate 12 is erected with the plate 4 sandwiched between them, and the side edges 9b and 9b of the cover plate 9 having a U-shaped cross section. And rising edge 1 of rising cover plate 12
Since it has a portion facing the 2b at its end, it is possible to prevent dust and foreign matter from entering the linear sliding bearing from the side or the bottom. Sliding tape
When it is desired to lubricate the sliding surface of the linear sliding bearing and the ball screw so that the bull 7 can slide smoothly, simply lubricate from the lubrication ports 16 and 16 'formed in the moving brackets 5 and 5'. Since it is good, it is possible to lubricate without removing the cover plates 9 and 9 '. Since the lubrication paths 17 and 17 'are formed by penetrating the inside of the wall thickness of the movable brackets 5 and 5', a separate oil supply hose is unnecessary. Therefore, refueling ho
May occur when the screw is pulled from the outside to the lubrication position,
When the bracket is moved, it is possible to eliminate defects such as damage and damage to the refueling hose and poor durability due to repeated bending of the hose.

[0011]

According to the present invention, there is provided a cover unit for a linear sliding bearing comprising a slide rail and a sliding body, and a movable bracket having a concave cross section and the sliding body mounted in the concave portion. A sliding plate is sandwiched between the plates standing upright at both ends of the sliding rail, and the sliding rail is sandwiched between a cover plate having a U-shaped cross section including a side and an upper side. The rising cover plate is erected on both sides of the rising cover plate so that the lower end of the side and the upper end of the rising cover plate face each other. The insertion bracket for inserting the character-shaped cover plate is formed so as to penetrate so that the moving bracket slides in the state where the cover plate is inserted. To form the lubrication route, the two types of cover plates
With this, the dustproof of the linear sliding bearing is achieved without hindering the sliding of the sliding body. Further, since the moving bracket is internally provided with the lubrication path, it is possible to perform lubrication in the state where the cover plate is mounted without providing a separate oil supply hose.

[Brief description of drawings]

FIG. 1 shows a conventional dust proof means for a linear sliding bearing, and FIG. 1 (a) shows an exclusive bellows attached.
(B) shows a telescopic type using a stepped rod.

FIG. 2 is a perspective view of a cover unit of a linear sliding bearing.

FIG. 3 is a front view of a cover unit of a linear sliding bearing.

FIG. 4 is a plan view (a) and a front view (b) of a plate to which a sliding rail is attached.

FIG. 5 is a plan view (a) and a front view (b) of a plate to which a cover plate having a U-shaped cross section is attached.

FIG. 6 is a plan view of a cover plate having a U-shaped cross section (a).
And a front view (b).

FIG. 7 is a plan view (a) and a front view (b) of the rising cover plate.

FIG. 8 is a front view (a) and a plan view (b) of a sliding bracket for mounting a sliding body.

FIG. 9 is a front view (a) and a plan view (b) of a moving bracket for mounting a ball screw.

[Explanation of symbols]

 1 Sliding Rail 2 Sliding Body 5 Moving Bracket 8 Plate 9 Cross-section C-shaped Cover Unit 11 Insertion Hole 12 Standing Cover Plate 17 Lubrication Route

Claims (1)

[Claims] 1. A moving bracket comprising a cover unit for a linear sliding bearing, which comprises a sliding rail and a sliding body, wherein the sliding body is mounted in a recess having an inverted concave cross section, and the sliding rail. A cover plate having a U-shaped cross section consisting of a side and an upper side that are laid across plates that are erected on both sides of the slide rail, and both sides of the slide rail. And a standing cover plate that is erected so as to face each other, the lower end of the side edge and the upper end of the rising cover plate are opposed to each other,
The moving bracket is formed with an insertion hole through which the cover plate having the U-shaped cross section is inserted so that the moving bracket slides in a state where the cover plate is inserted. A cover unit for a linear sliding bearing, wherein the moving bracket is provided so as to form an oil passage.