KR20140014704A

KR20140014704A - Linear sliding device

Info

Publication number: KR20140014704A
Application number: KR1020120081390A
Authority: KR
Inventors: 이인정
Original assignee: 이인정
Priority date: 2012-07-25
Filing date: 2012-07-25
Publication date: 2014-02-06

Abstract

The present invention provides a linear sliding device that allows the bearing to contact the linear guide rail in rolling motion, while simultaneously eliminating the flow by eliminating contact gaps and having low kinetic frictional force, thereby providing a smooth and noiseless linear sliding device.
A linear sliding device according to a preferred embodiment of the present invention includes: a linear guide rail having a trough open upward along the longitudinal direction and bearing guide grooves formed at the same height on both vertical walls facing each other in the trough; A slider located on an upper surface of the linear guide rail; A first inner horizontal rotating bearing and a second inner horizontal rotating bearing positioned on a lower surface of the slider to linearly move the slider while rolling along a bearing guide groove; Bearing support bolts respectively inserted into the first and second inner horizontal rotating bearings to be screwed to the slider to support rotation of the first and second inner horizontal rotating bearings; And at least one stop ring having a diameter equal to or smaller than an inner ring of the first inner horizontal rotating bearing and the second inner horizontal rotating bearing and inserted into the bearing support bolt to determine a fixed position after screwing the bearing support bolt. It is done.

Description

Linear sliding device

The present invention relates to a linear sliding device, in particular to provide a circulation passage of the power transmission belt to suppress vibration. It is related to the linear guide rails in contact with the rolling motion, while simultaneously eliminating the flow by eliminating contact gaps, and a smooth and silent linear sliding device with low kinetic friction.

In general, automated equipment is applied to facilities for mass production. The automation device is equipped with a linear motion guide (LINEAR MOTION GUIDE) as a linear reciprocating device for linear reciprocation of the product or equipment.

The linear motion guide ensures quiet and precise movement of the goods to be transported in a linear movement, and at the same time ensures more accurate positioning with stable running force. In addition, since the linear motion guide can maintain high accuracy for a long time, it is applied to various types of automation devices. The linear motion guide has a basic configuration of a guide rail having a predetermined length, a slider for sliding along the guide rail, and a moving means for moving the slider forward and backward. At this time, the structure in which the slider moving forward and backward is linearly moved by the rotational coupling of the ball screw (screw), the structure in which the slider is linearly moved by the driving force such as the actuator, and the slider is connected to the belt to rotate the belt pulley It is proposed and applied in various ways, such as a structure moved by.

The linear motion guide can increase speed and reduce noise only when the clearance with the sliding contact surface is zero for accurate position movement. It must also have good load carrying capacity.

As a background technology of the present invention, Korean Patent Registration No. 10-0700315 discloses a linear motion guide having a heavy load carrier. In the background art, in a motion guide device for guiding a movement of a moving object, a pair of rails extending along a moving direction and facing each other, and a pair of rails extending along a moving direction on opposite sides of the sidewall, And a carrier provided with a frame provided, and a plurality of track roller bearings coupled to the carrier block and the carrier block, the outer circumferential surface of which is in contact with each rail, wherein the track roller contacts the one rail in the plurality of track roller bearings. At least one of the bearings and at least one of the track roller bearings in contact with the other rail are in contact with each other.

However, the background art has to install a separate rail member in two places of the frame. This rail member is required to additionally constitute a long member having a circular cross section, thereby increasing the manufacturing cost. In addition, the mounting groove of the frame on which the rail member is seated must be precisely processed, and it has a disadvantage that it is difficult to secure the straightness when a defect occurs.

Korea Patent Registration No. 10-0379782

The present invention was devised in view of the above circumstances, and provides a circulation passage of the power transmission belt, while allowing the bearing to contact the linear guide rail by rolling motion, while eliminating the contact gap, eliminating flow and increasing the kinetic frictional force. Its purpose is to provide a linear sliding device that is less soft and noiseless.

Linear sliding device according to a preferred embodiment of the present invention,

A linear guide rail having a trough open upward along the longitudinal direction and bearing guide grooves formed at the same height on both vertical walls facing each other in the trough;

A slider located on an upper surface of the linear guide rail;

A first inner horizontal rotating bearing and a second inner horizontal rotating bearing positioned on a lower surface of the slider to linearly move the slider while rolling along a bearing guide groove;

Bearing support bolts respectively inserted into the first and second inner horizontal rotating bearings to be screwed to the slider to support rotation of the first and second inner horizontal rotating bearings;

At least one stop ring having a diameter equal to or smaller than an inner ring of the first inner horizontal rotating bearing and the second inner horizontal rotating bearing and inserted into the bearing support bolt to determine a fixed position after screwing the bearing support bolt; And

Inserting the power transmission belt in the lower portion of the linear guide rail is characterized in that it includes a belt circulation passage penetrated in the longitudinal direction to suppress the vertical vibration.

The first inner horizontal rotating bearing may be N-contacted with one bearing guide groove, and the second inner horizontal rotating bearing may be installed with N + 1 rolling contact with the other bearing guide groove.

In addition, the lower portion of the slider is characterized in that a plurality of inner vertical rotary bearings are further provided in contact with the bottom surface of the trough rolling motion.

In addition, the first inner horizontal rotating bearing or the second inner horizontal rotating bearing is characterized in that the eccentric bearing type is eccentrically coupled to the bearing support bolt.

In addition, the slider is characterized in that a plurality of outer horizontal rotary bearings rolling on the outer wall of the linear guide rail via the support shaft is further provided.

According to the linear sliding device of the present invention, it is possible to reduce the vertical vibration during the reciprocating motion of the power transmission belt to achieve a stable sliding operation.

In addition, straight sliding motion can be performed smoothly without installing the guide shaft on the linear guide rail, and the production cost is low. In addition, the rolling motion in the state in which the first and second inner horizontal rotating bearings directly contact the bearing guide groove enables smooth linear reciprocation without noise.

In addition, when the first or second inner horizontal rotating bearing has an eccentric structure or an outer horizontal rotating bearing is added, the widthwise flow of the slider is eliminated, thereby enabling precise reciprocating movement.

In addition, when the inner vertical rotation bearing is added, the load dispersion force is improved, thereby reducing the moving load, thereby increasing the loading load.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate exemplary embodiments of the invention and, together with the description, serve to explain the principles of the invention, Shall not be construed as limiting.
1 is a perspective view of a linear sliding device according to an embodiment of the present invention.
Figure 2 is a side view of Figure 1;
3 is a rear perspective view of the slider applied to FIG.
4 is a rear view of FIG. 3.
Figure 5 is an assembled state of the inner horizontal rotating bearing applied to FIG.
6 is a cross-sectional view of the inner vertical rotary bearing further installed according to the present invention.
Figure 7 is a rear view of the slider further installed the inner vertical rotary bearing according to the present invention.
8 is a perspective view of a linear sliding device according to another embodiment of the present invention.
9 is a side view of FIG. 8;
10 is a rear view of the slider applied to FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the embodiments shown in the accompanying drawings, but the present invention is not limited thereto.

&Lt; Embodiment 1 >

1 to 4, the linear sliding device 10 according to the present invention includes a linear guide rail 12, a slider 14, first and second inner horizontal rotating bearings 16A, 16B and bearing support bolts ( 18).

As shown in FIG. 2, a belt circulation passage 12a penetrated in the longitudinal direction is formed in the lower portion of the linear guide rail 12 to insert the power transmission belt 5 to suppress the vertical vibration. At this time, the power transmission belt is connected to the slider 14 to reciprocate the slider 14 in accordance with the rotation direction of the output end of the drive motor (not shown). In this case, the belt circulation passage 12a may have a curved concave upward as shown in FIG. 6B in order to prevent the belt circulation passage 12a from contacting the linear guide rail 12 during vertical vibration.

The linear guide rail 12 has a groove 121 open upward along the longitudinal direction and bearing guide grooves 122a and 122b formed at the same height on both vertical walls 122 and 122 facing each other of the groove 121. Have The bearing guide grooves 122a and 122b form a rectangular cross-sectional groove. The length of the linear guide rail 12 is not specified and may be increased or decreased in accordance with the maximum reciprocating movement distance of the slider 14.

The slider 14 is located on the upper surface of the linear guide rail 12. The slider 14 is not limited to the shape illustrated as a substantially plate-shaped. The slider 14 is equipped with a product or equipment to be moved. The slider 14 is configured to be shorter than the length of the linear guide rail 12. In this embodiment, the slider 14 and the linear guide rail 12 is made of lightweight aluminum, but is not limited to a specific material in the present invention.

The first inner horizontal rotating bearing 16A and the second inner horizontal rotating bearing 16B are located on the lower surface of the slider 14. The first inner horizontal rotating bearing 16A and the second inner horizontal rotating bearing 16B linearly move the slider 14 while rolling along the bearing guide grooves 122a and 122b. The first inner horizontal rotating bearing 16A and the second inner horizontal rotating bearing 16B have the same structure. That is, the first inner horizontal rotating bearing 16A and the second inner horizontal rotating bearing 16B have outer rings, inner rings, steel balls or rollers installed between the inner rings and outer rings, and retainers for maintaining a constant distance between the steel balls (or rollers). Include. Thus, the first inner horizontal rotating bearing 16A and the second inner horizontal rotating bearing 16B are not limited to a particular bearing type.

In the present embodiment, as shown in FIG. 3, the first inner horizontal rotating bearing 16A is composed of one and the second inner horizontal rotating bearing 16B is composed of two. That is, in the present invention, the first inner horizontal rotating bearing 16A is N-contacted with one bearing guide groove 122a, and the second inner horizontal rotating bearing 16B is N with the other bearing guide groove 122b. Installed in +1 contact with the clouds. Therefore, as well as illustrated, for example, when the first inner horizontal rotating bearing 16A is composed of two, the second inner horizontal rotating bearing 16B is composed of three. At this time, when the width of the trough 121 is narrow as in this embodiment, the first inner horizontal rotating bearing 16A and the second inner horizontal rotating bearing 16B are arranged at positions shifted from each other so as not to interfere with each other.

The bearing support bolts 18 are inserted into the first and second inner horizontal rotating bearings 16A and 16B, respectively, and fixed to the slider 14 by screwing, so that the bearings of the first and second inner horizontal rotating bearings 16A and 16B can be fixed. Support the rotation. In this embodiment, the bearing support bolt 18 is configured in the form of a bolt, but is not limited to this bolt type. At this time, the bearing support bolt 18 is installed in a direction perpendicular to the trough bottom surface (125).

In addition, as shown in Figure 5 has a diameter equal to or smaller than the inner ring of the first inner horizontal rotating bearing (16A) and the second inner horizontal rotating bearing (16B) is inserted into the bearing support bolt 18 of the bearing support bolt 18 One or more stop rings 17 are included which, after screwing, determine their fixing position.

The stop ring 17 has a thin disk shape and has a hole 17a into which a bearing support bolt 18 is inserted. Therefore, when a plurality of stop rings 17 are inserted into the bearing support bolts 18, the first inner horizontal rotating bearing 16A and the second inner horizontal rotating bearing 16B have a constant clearance with respect to the underside of the slider 14. Will be made. Accordingly, the first inner horizontal rotating bearing 16A and the second inner horizontal rotating bearing 16B do not contact the bottom surface of the slider 14, thereby allowing free rolling motion.

In the linear sliding device 10 configured as described above, when the slider 14 moves to one side through the belt moving means, the first and second inner horizontal rotating bearings 16A and 16B are bearing guide grooves 122a. 122b) rotates along the longitudinal direction of the linear guide rail 12 while making a rolling contact. Thus, the slider 14 is capable of a stable and smooth linear sliding reciprocating motion.

Reference numeral '14a' is a 'screw hole' for fixed installation of onboard equipment.

Second Embodiment

Meanwhile, in the present invention, the first inner horizontal rotating bearing 16A or the second inner horizontal rotating bearing 16B may use an eccentric bearing type that is eccentrically coupled to the bearing support bolt 18. In this case, there is no gap between the first and second inner horizontal rotating bearings 16A and 16B and the bearing guide grooves 122a and 122b so that the linear movement of the slider 14 without flow is smoothly performed. That is, the center of the inner ring of the first inner horizontal rotating bearing 16A or the second inner horizontal rotating bearing 16B may be configured to be eccentric by a predetermined distance from the center of the bearing.

&Lt; Third Embodiment >

In addition, in the present invention, when the heavy weight of the equipment mounted on the slider 14 is out of the plurality of slider 14 in contact with the bottom surface 125 in the trough 121 in the lower portion of the slider 14 as shown in Figure 6a and 7 Four inner vertical rotating bearings 20 may be further installed. At this time, the inner vertical rotation bearing 20 is inserted into the bearing support bolt 19 horizontally installed on the slider 14 is installed.

In the present embodiment, the inner vertical rotation bearing 20 is configured by a pair of front and rear each, all four are installed, but may be installed to increase further according to the length of the slider (14).

Therefore, the loading load of the equipment applied to the slider 14 is applied to the first and second inner horizontal rotating bearings 16A and 16B and the inner vertical rotating bearing 20 in a distributed manner so that the rolling contact force is reduced, so that the slider 14 Smooth linear movement is achieved.

Fourth Embodiment

In addition, in the present invention, as shown in FIGS. 8 to 10, the slider 14 further includes an outer horizontal rotating bearing 22 rolling on the outer wall 123 of the linear guide rail 12 via the bearing support bolt 23. Can be. In the present exemplary embodiment, the outer horizontal rotating bearing 22 is installed close to the first inner horizontal rotating bearing 16A, but may be located near the second inner horizontal rotating bearing 16B. At this time, the outer wall 123 may be configured with an outer bearing guide groove 123a for guiding the outer horizontal rotating bearing 22.

Accordingly, the slider 14 is more stably linearly moved by the second inner horizontal rotating bearing 16B and the outer horizontal rotating bearing 22 by sliding the rollers 14 with each other while the slider 14 faces each other. do.

As described above, the linear sliding device 10 according to the present invention suppresses the vertical vibration of the belt by forming a belt circulation passage 12a penetrated in the longitudinal direction to insert the power transmission belt in the lower portion of the linear guide rail 12. Stable operation.

In addition, since the linear sliding motion can be smoothly performed without installing the guide shaft on the linear guide rail 12, the production cost is low. In addition, the rolling motion in the state in which the first and second inner horizontal rotating bearings 16A and 16B are in direct contact with the bearing guide grooves 122a and 122b enables a smooth linear reciprocating movement without noise.

In addition, when the first or second inner horizontal rotating bearing 16A or 16B has an eccentric structure or the outer horizontal rotating bearing 22 is added, the widthwise flow of the slider 14 is eliminated, thereby enabling precise reciprocating movement. .

In addition, when the inner vertical rotation bearing 20 is added, the distribution force of the load is improved to reduce the moving load to increase the loading load of the equipment.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art in light of the above teachings. will be.

12: Guide rail
122a, 122b: bearing guide groove
14: slider
16A: first inner horizontal rotating bearing
16B: second inner horizontal rotating bearing
17: stop ring
18: Bearing support bolt
20: inner vertical rotating bearing
22: outer horizontal rotating bearing

Claims

Linear guide rail 12 having a trough 121 open upward along the longitudinal direction and bearing guide grooves 122a and 122b formed at the same height on both vertical walls 122 and 122 facing each other in the trough 121. and;
A slider 14 positioned on an upper surface of the linear guide rail 12;
A first inner horizontal rotating bearing 16A and a second inner horizontal rotating bearing 16B positioned on a lower surface of the slider 14 to linearly move the slider 14 while rolling along the bearing guide grooves 122a and 122b. and;
The bearing support is inserted into the first and second inner horizontal rotating bearings 16A and 16B and fixed to the slider 14 by screwing to support rotation of the first and second inner horizontal rotating bearings 16A and 16B. A bolt 18;
Has a diameter equal to or smaller than the inner ring of the first inner horizontal rotating bearing 16A and the second inner horizontal rotating bearing 16B and is inserted into the bearing supporting bolt 18 to be fixed after screwing the bearing supporting bolt 18. One or more stop rings 17 for determining position; And
A linear sliding device comprising a belt circulation passage (12a) penetrated in the longitudinal direction in order to suppress the vertical vibration by inserting the power transmission belt in the lower portion of the linear guide rail (12).

The method of claim 1,
The first inner horizontal rotating bearing (16A) is to make N rolling contact with one side bearing guide groove (122b), and the second inner horizontal rotating bearing (16B) is rolling with N + 1 in the other bearing guide groove (122a) A linear sliding device, wherein the linear sliding device is installed to be in contact with each other.

The method of claim 1,
A linear sliding device, characterized in that the lower portion of the slider (14) is further provided with a plurality of inner vertical rotary bearings (20) in contact with the bottom surface (125) of the trough (121).

The method of claim 1,
The first inner horizontal rotating bearing (16A) or the second inner horizontal rotating bearing (16B) is a linear sliding device, characterized in that the eccentric bearing type is eccentrically coupled to the bearing support bolt (18).

The method of claim 1,
The slider 14 is further provided with a linear sliding device, characterized in that a plurality of outer horizontal rotary bearings 22 are rolled on the outer wall 123 of the linear guide rail 12 via the support shaft 23. .