KR102565328B1 - 2-axis type guide roller - Google Patents

Abstract

The present invention relates to a two-axis guide roller in which two roller bodies rotating about two rotation axes in different directions are provided on one base body so as to guide movement paths in two different directions at the same time, thereby reducing the number of guide rollers coupled to a moving body and thus simplifying the structure of the moving body and enabling weight reduction and miniaturization.

Description

2-axis guide roller {2-AXIS TYPE GUIDE ROLLER}

The present invention relates to a biaxial guide roller. More specifically, by providing two roller bodies rotating around two rotation axes in different directions on one base body, it is possible to guide the movement path in two different directions at the same time, so that the guide roller coupled to the moving body It relates to a two-axis guide roller that can reduce the number, thereby simplifying the structure of a moving body, and enabling weight reduction and miniaturization.

The term logistics is an abbreviation for physical distribution, and it is a generic term for functions or activities that effectively move products and goods from producers to consumers. It usually refers to several activities such as packing, unloading, transportation, storage and information.

In general, various processes such as packaging, storage, collection/loading, transportation, unloading/delivery, and storage are used to transport products and goods. No matter what means of transportation is used, it is impossible to move products and goods without going through this process. The overall view of these movements is physical distribution (logistics).

In recent years, mass production, mass sale, and mass consumption have become the trend of the times, and the importance of logistics is gradually increasing because the need to streamline the flow of goods between them has increased.

Logistics warehouse refers to a storage warehouse for temporarily or long-term loading and storage of all items used in daily life, such as various foodstuffs, beverages, clothing, home appliances, miscellaneous goods and industrial products, generally produced in large quantities at factories or production sites. Due to the recent rapid development of the logistics industry, these logistics warehouses are being designed and constructed to promote the creation of new businesses such as efficient warehousing and warehousing as well as inventory management from the arrangement of items stored in the warehouse beyond simple logistics management. .

Since these logistics warehouses are vital to the rapid arrival and departure of cargo, most of them are equipped with mechanized or automated cargo loading and unloading means, and typically, automation facilities such as stacker cranes, shuttles, and lifts are used. Various devices such as a transfer system in which a transfer cart moves along a rail installed on the ceiling and transfers items are used.

Guide rollers are almost always used in various logistics transport systems. The guide roller is the most common device used to guide the moving path of a moving object when a moving object relatively moves along a rail, such as when a transfer cart travels on a rail, and is very widely used throughout the industry.

These guide rollers are generally configured in a form in which a bearing and a roller body are inserted and coupled to one rotation shaft, and the outer roller body rotates around the rotation shaft and is configured to come into rolling contact with the rail contact surface. Therefore, since the guide roller comes into rolling contact with the rail contact surface while being coupled to the movable body, vibration of the movable body that occurs in a direction perpendicular to the rotational axis is prevented and guides the moving path of the movable body during movement of the movable body.

When it is necessary to guide the movement path of the movable body in various directions during the movement of the movable body, a plurality of guide rollers are mounted on the movable body to have rotational axes in different directions. For example, in the case of guiding the movement path of the moving body in the left-right direction and the front-back direction with respect to the moving direction of the moving body, at least two guide rollers should be mounted on the moving body so as to be disposed at right angles to each other in the left-right direction and the front-back direction. .

Therefore, in order to guide the moving path of the moving body in various directions, generally a plurality of guide rollers must be mounted on the moving body, so the structure of the moving body is complicated, the weight and size increase, and the plurality of guide rollers must be combined. There are problems such as difficulty in manufacturing and increase in manufacturing cost.

Domestic Patent No. 10-1946314

The present invention was invented to solve the problems of the prior art, and an object of the present invention is to provide two roller bodies rotating around two rotational axes in different directions on one base body, thereby providing two different roller bodies at the same time. It is possible to guide a moving path in the direction to reduce the number of guide rollers coupled to the moving body, thereby simplifying the structure of the moving body, and providing a two-axis guide roller that enables weight reduction and miniaturization.

The present invention, a base body, a first rotational shaft protruding in a first axial direction on one surface of the base body and having a hollow in the center, and a first roller body rotatably coupled about the first rotational shaft A first roller module comprising; and a second rotational shaft disposed in a direction of a second axis crossing the first rotational shaft and coupled to the first rotational shaft so as to be positioned in a hollow portion of the first rotational shaft, and rotatably about the second rotational shaft. A two-axis guide roller comprising a second roller module including a coupled second roller body, characterized in that the first roller body and the second roller body are formed so as to independently roll and contact different contact surfaces. to provide.

In this case, an outermost point of the outer circumferential surface of the second roller body protruding forward in the first axial direction may be disposed to protrude more than the front outer surface of the first roller body.

In addition, the first axis direction and the second axis direction may be set to be orthogonal to each other.

In addition, the first rotational shaft is formed in a solid cylindrical shape, and the hollow part may be formed in a form in which a center portion of the first rotational shaft is removed to be open to the outside so that the first rotational shaft is separated from each other on both sides based on the hollow part. there is.

In addition, a coupling hole may be formed through the first rotation shaft separated from each other by the hollow part in the direction of the second shaft, and the second rotation shaft may be coupled to the first rotation shaft in such a way that it is inserted into the coupling hole.

In addition, the first roller body includes a first bearing closely fixed to the outer circumferential surface of the first rotation shaft and a first rolling member coupled to surround the outer circumferential surface of the first bearing, and the second roller body is the first roller body. It may include a second bearing tightly fixed to the outer circumferential surface of the second rotation shaft, and a second rolling member coupled to surround the outer circumferential surface of the second bearing and formed such that the outer circumferential surface is spaced apart from the inner circumferential surface of the first bearing.

According to the present invention, by providing two roller bodies rotating around two rotation axes in different directions on one base body, it is possible to guide movement paths in two different directions at the same time, and the guide rollers are coupled to the moving body. The number of can be reduced, thereby simplifying the structure of the movable body and enabling weight reduction and miniaturization.

1 is a perspective view schematically showing the outer appearance of a two-axis guide roller according to an embodiment of the present invention;
2 is a plan view schematically showing a state in which a two-axis guide roller is in rolling contact with a guide rail according to an embodiment of the present invention;
Figure 3 is an exploded perspective view schematically showing the internal configuration of a two-axis guide roller according to an embodiment of the present invention;
Figure 4 is a cross-sectional view taken along line "AA" in Figure 1;
FIG. 5 is a cross-sectional view taken along line “BB” in FIG. 1 .

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. First, in adding reference numerals to components of each drawing, it should be noted that the same components have the same numerals as much as possible even if they are displayed on different drawings. In addition, in describing the present invention, if it is determined that a detailed description of a related known configuration or function may obscure the gist of the present invention, the detailed description will be omitted.

1 is a perspective view schematically showing the outer shape of a 2-axis guide roller according to an embodiment of the present invention, and FIG. 2 is a schematic view of a state in which the 2-axis guide roller is in rolling contact with a guide rail according to an embodiment of the present invention. Figure 3 is an exploded perspective view schematically showing the internal configuration of a two-axis guide roller according to an embodiment of the present invention, Figure 4 is a cross-sectional view taken along the line "A-A" in Figure 1, 5 is a cross-sectional view taken along line "B-B" in FIG.

The two-axis guide roller 10 according to an embodiment of the present invention has a structure capable of guiding a moving path in two different directions, including a first roller module 100 and a second roller module 200. It consists of

The first roller module 100 includes a base body 110, a first rotary shaft 120 protruding in a first axial direction on one surface of the base body 110 and having a hollow part 121 formed in the center thereof, It is configured to include a first roller body 130 coupled rotatably around the first rotation shaft 120 .

The second roller module 200 is disposed in the direction of the second axis crossing the first axis of rotation 120 and is inserted into the first axis of rotation 120 so as to be positioned in the hollow part 121 of the axis of rotation 120. It is configured to include a coupled second rotation shaft 210 and a second roller body 220 rotatably coupled around the second rotation shaft 210 .

At this time, the first roller body 130 and the second roller body 220 are formed to independently roll and contact different contact surfaces.

Looking more specifically, the base body 110 of the first roller module 100 constitutes the basic support structure of the entire guide roller, and can be formed in various shapes such as a square block, and is configured to be coupled to a separate moving body do.

The first rotational shaft 120 protrudes from one surface of the base body 110 in the first axial direction, and the first roller body 130 is inserted into and coupled to the first rotational shaft 120 as the center of the first rotational shaft 120. It is configured to rotate with

The first roller body 130 includes a first bearing 131 tightly fixed to the outer circumferential surface of the first rotational shaft 120 and a first rolling member 132 coupled to surround the outer circumferential surface of the first bearing 131. do. The first rolling member 132 may be formed of a material having elasticity such as rubber or urethane, and may be formed in the same shape as that applied to a general guide roller.

Meanwhile, a hollow part 121 is formed in the center of the first rotational shaft 120 . For example, the first rotary shaft 120 may be formed in a solid cylindrical shape, and the hollow part 121 is formed on both sides of the first rotary shaft 120 based on the hollow part 121 as shown in FIG. It may be formed in the form of removing the center of the first rotational shaft 120 to be opened to the outside so as to be separated from each other. That is, the first rotation shaft 120 may be formed in a form separated into both sides around the hollow part 121 .

The hollow part 121 of the first rotation shaft 120 is to place the second roller module 200 therein, and the size of the hollow part 121 can be appropriately determined according to the size of the second roller module 200. can be designed

Here, it has been described that the hollow part 121 of the first rotary shaft 120 is formed to be open to the outside in the form of separating the first rotary shaft 120 into both sides, but unlike the hollow part 121, the first rotary shaft 120 ) may be formed in a form in which the central region of the first rotational shaft 120 is simply removed, rather than being opened to the outside to separate them. That is, the first rotation shaft 120 may be formed in a hollow cylindrical shape so that the hollow part 121 is formed in the inner space of the first rotation shaft 120 .

However, as in one embodiment of the present invention, the hollow part 121 is formed in an externally open form to separate the first rotary shaft 120 into both sides, so that the second roller module 200 is then formed in the hollow part 121 The operation of coupling to can be easily performed.

The first roller body 130 is inserted into and coupled to the first rotational shaft 120 so that the inner circumferential surface of the first bearing 131 closely contacts the outer circumferential surface of the first rotational shaft 120 . At this time, a separate stopper plate 140 for preventing separation of the first bearing 131 may be coupled to the protruding end surface of the first rotation shaft 120 . The stopper plate 140 is formed to be separated into both sides around the hollow part 121, similar to the shape of the protruding end surface of the first rotary shaft 120, which is separated into both sides around the hollow part 121, so that the first rotation shaft 120 ) can be bolted to the protruding end face.

In addition, at the end of the first rotating shaft 120 adjacent to the base body 110, the first roller body 130 does not contact the base body 110 and is fixed in a spaced state of the first bearing 131. A stepped portion 123 that can contact the side surface may be formed. The stepped portion 123 may be formed to protrude in a radial direction along the outer circumferential circumference of the first rotational shaft 120 .

On the other hand, coupling holes 122 are formed through the first rotational shaft 120 separated on both sides around the hollow part 121 in the second axis direction, and the second rotational shaft 210 of the second roller module 200 is coupled to the first rotation shaft 120 in such a way that it is inserted into the coupling hole 122. At this time, both ends of the second rotational shaft 210 are disposed so as not to protrude from the outer circumferential surface of the first rotational shaft 120 in a state in which the second rotational shaft 210 is inserted into the coupling hole 122 . To this end, the length of the second rotational shaft 210 should be smaller than or equal to the diameter of the first rotational shaft 120 .

The first rotational shaft 120 and the second rotational shaft 210 are preferably arranged in directions orthogonal to each other for structural stability and roller utilization.

The second roller body 220 of the second roller module 200 is coupled to a second bearing 221 that is tightly fixed to the outer circumferential surface of the second rotational shaft 210 and surrounds the outer circumferential surface of the second bearing 221, It may be configured to include a second rolling member 222 formed so that the outer circumferential surface is spaced apart from the inner circumferential surface of the first bearing 131 . That is, it is preferable that the diameter of the second rolling member 222 is smaller than the inner diameter of the first bearing 131 . Since the inner diameter of the first bearing 131 is the same as the diameter of the first rotary shaft 120, in other words, the diameter of the second rolling member 222 is preferably smaller than the diameter of the first rotary shaft 120. .

Like the first rolling member 132, the second rolling member 222 may also be formed of an elastic material such as rubber or urethane, and may be formed in the same shape as that applied to a general guide roller.

Looking at the assembly process of the first roller module 100 and the second roller module 200, first, the second roller body 220 is positioned inside the hollow part 121 of the first rotational shaft 120. At this time, the center of the second bearing 221 of the second roller body 220 and the center of the coupling hole 122 of the first rotating shaft 120 are aligned so that they are located on the same straight line. In this state, when the second rotational shaft 210 is inserted through the coupling hole 122, the second rotational shaft 210 is inserted into the coupling hole 122 at both ends and supported, and the center of the second roller body 220 The second bearing 221 is positioned. In this state, since the diameter of the second roller body 220 is smaller than the diameter of the first rotating shaft 120, the second roller body 220 does not protrude outside in the radial direction of the first rotating shaft 120. However, the second roller body 220 is disposed to protrude more outwardly than the protruding end of the first rotational shaft 120 in the longitudinal direction of the first rotational shaft 120 . In this state, when the first roller body 130 is inserted into the outer circumferential surface of the first rotating shaft 120 in close contact and the stopper plate 140 is coupled, the assembly process is completed.

In the state in which the assembly is completed in this way, the outermost point protruding in the first axial direction among the outer circumferential surfaces of the second roller body 220 is disposed to protrude more than the front outer surface of the first roller body 130 .

According to this structure, the two-axis guide roller 10 according to an embodiment of the present invention can simultaneously roll and contact the two contact surfaces 21 and 22 of the running rail 20 perpendicular to each other, as shown in FIG. can That is, the outer circumferential surface of the first roller body 130 is in rolling contact with the first contact surface 22 of the running rail 20, and the outer circumferential surface of the second roller body 220 is in rolling contact with the second contact surface 21 of the running rail 20. ) can be in rolling contact. Accordingly, based on the direction shown in FIG. 2 , the driving path of the moving body can be guided in the vertical and horizontal directions.

The above description is merely an example of the technical idea of the present invention, and various modifications and variations can be made to those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention, but to explain, and the scope of the technical idea of the present invention is not limited by these embodiments. The protection scope of the present invention should be construed according to the claims below, and all technical ideas within the equivalent range should be construed as being included in the scope of the present invention.

100: first roller module
110: base body
120: first rotation axis
121: hollow part
122: coupling hole
123: stepped part
130: first roller body
140: stopper plate
200: second roller module
210: second rotation axis
220: second roller body

Claims (6)

A first comprising a base body, a first rotation shaft protruding in a first axial direction on one surface of the base body and having a hollow portion formed in the center, and a first roller body rotatably coupled about the first rotation shaft roller module; and
A second rotational shaft disposed in the direction of a second axis crossing the first rotational shaft and inserted into and coupled to the first rotational shaft so as to be positioned in the hollow of the first rotational shaft, and rotatably coupled about the second rotational shaft A second roller module comprising a second roller body to be
Including, the first roller body and the second roller body is characterized in that the two-axis guide roller is formed to be independently rolling contact with each other on different contact surfaces.
According to claim 1,
The outermost point protruding forward in the first axial direction of the outer circumferential surface of the second roller body is a two-axis guide roller, characterized in that disposed to protrude more than the front outer surface of the first roller body.
According to claim 2,
The first axial direction and the second axial direction are two-axis guide rollers, characterized in that set in directions orthogonal to each other.
According to claim 2,
The first rotation shaft is formed in a solid cylindrical shape,
The hollow part is a two-axis guide roller, characterized in that formed in the form of removing the center of the first rotary shaft to be opened to the outside so that the first rotary shaft is separated from each other on both sides based on the hollow part.
According to claim 4,
Coupling holes are formed through the first rotation shafts separated from each other by the hollow parts in the direction of the second shaft,
The second rotational shaft is a two-axis guide roller, characterized in that coupled to the first rotational shaft in a manner inserted into the coupling hole.
According to claim 5,
The first roller body
A first bearing closely fixed to the outer circumferential surface of the first rotating shaft and a first rolling member coupled to surround the outer circumferential surface of the first bearing,
The second roller body
A second bearing tightly fixed to the outer circumferential surface of the second rotation shaft, and a second rolling member coupled to surround the outer circumferential surface of the second bearing and formed such that the outer circumferential surface is spaced apart from the inner circumferential surface of the first bearing. 2-axis guide roller.

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