Rolling device

Abstract

Disclosed is a rolling device. The devices eliminate or minimize a variation in the distance between rolling rollers generated due to bearing clearance during rolling of a material. The rolling device according to the present invention comprises a plurality of rolling roller assemblies and a spacing adjustment unit. The rolling roller assemblies each include a rolling roller and a bearing housing.

Description

Rolling device

[0001] The present invention relates to a rolling device.

[0002] A rolling device is a device that performs a process of gradually thinning a material (e.g., a metal material) or deforming it into a specific shape by placing the material between two or more rotating cylinders (rollers).

[0003] Figure 1 briefly illustrates a general rolling device.

[0004] The rolling device is equipped with a plurality of rolling rollers and passes a material between the rotating rolling rollers. Figure 1 shows two rolling rollers, namely, rolling roller (1) and rolling roller (2).

[0005] A rolling roller comprises a roller body (11) and a roller shaft (12), the roller shaft (12) is provided at both ends of the roller body (11), and a bearing (20) is coupled to the roller shaft (12).

[0006] The bearing (20) may be a known rolling bearing (see FIG. 4). Briefly, the bearing (20) comprises an inner ring (w1), an outer ring (w2), and a rotating body (w3), and the rotating body (w3) may be a ball or a roller.

[0007] The roller shaft (12) of the rolling roller is inserted and positioned in the center hole (20h) of the inner ring (w1).

[0008] Generally, since the roller shaft (12) is pressed into the center hole (20h) of the inner ring (w1), the outer surface of the roller shaft (12) and the inner surface of the inner ring (w1) are in close contact, and there is no space between the outer surface of the roller shaft (12) and the inner surface of the inner ring (w1). Accordingly, when the roller shaft (12) rotates, the inner ring (w1) rotates together with the roller shaft (12).

[0009] A gap may exist between the inner ring (w1) and the rotating body (w3) of the bearing (20) and / or between the rotating body (w3) and the outer ring (w2). The gap may be referred to as 'bearing clearance' or 'bearing clearance'.

[0010] FIG. 2 briefly illustrates the phenomenon in which the roller shaft (12) moves within the bearing gap according to the difference in reaction force caused by the material (m) being rolled, and FIG. 3 briefly illustrates the change in the distance between the roller bodies (11) due to the reaction force caused by the material being rolled.

[0011] Referring to FIGS. 1 to 3, two rolling rollers (specifically roller bodies (11)) are spaced apart by a certain distance (d1), and a material (m) enters between the two rolling rollers. At this time, the material (m) presses against the roller bodies (11).

[0012] Due to the force of the material (m) pressing the roller bodies (11), the roller shafts (12) of the two rolling rollers move by the bearing gap and spread apart from each other.

[0013] In FIG. 3, the roller body (11) of the rolling roller (1) and the roller body (11) of the rolling roller (2) are separated by a certain distance (d1). This state represents the state before the material (m) enters between the two roller bodies (11).

[0014] And, when a material (m) enters between the two roller bodies (11), the distance between the two roller bodies (11) becomes a distance (d2) greater than d1 due to the force of the material (m) pressing against the roller bodies (11). Rolling roller (3) and rolling roller (4) represent rolling roller (1) and rolling roller (2) while the material (m) is being fed between the two roller bodies (11).

[0015] As such, since the roller shaft (12) moves within the bearing gap, the material (m) is not deformed into a preset shape (e.g., thickness), and there is a problem that many rolling processes must be performed in order for the material (m) to be deformed into a preset shape.

[0016] To solve the above problem, it is necessary to eliminate or minimize the bearing clearance so that the roller shaft (12) cannot move within the bearing clearance.

[0017] The objective of the present invention is to provide a rolling device that maintains a constant distance between adjacent rolling rollers while eliminating or minimizing bearing clearance.

[0018] The aforementioned objective of the present invention is achieved by the specific details described below.

[0019] A rolling device according to an embodiment of the present invention comprises a plurality of rolling roller assemblies and a gap adjustment unit. Each of the plurality of rolling roller assemblies includes a rolling roller and a bearing housing, and the gap adjustment unit is disposed between adjacent rolling roller assemblies among the plurality of rolling roller assemblies. The gap adjustment unit includes a adjustment drive unit and a adjustment push unit. The housing body of the bearing housing accommodates a roller shaft of the rolling roller and a plurality of bearings coupled to the roller shaft. The adjustment push unit is disposed in a pressure member hole of the housing body and moves by the adjustment drive unit to press some of the plurality of bearings. The plurality of bearings include a pressure bearing that is pressed by the adjustment push unit and a non-pressure bearing that is not pressed by the adjustment push unit, and the movement of the roller shaft is restricted by the pressure force applied by the adjustment push unit to the pressure bearing and the reaction force applied by the inner surface of the housing body to the non-pressure bearing.

[0020] Specifically, the gap adjustment unit is positioned between the first bearing housing and the second bearing housing of adjacent rolling roller assemblies and moves either one or both of the first bearing housing and the second bearing housing.

[0021] Specifically, the gap adjustment unit includes an adjustment drive unit and an adjustment push unit. One side of the adjustment drive unit is connected to the adjustment push unit, and the other side of the adjustment drive unit is connected to the first bearing housing. The adjustment push unit is positioned in a pressure member hole of the second bearing housing and pressurizes a pressure bearing housed in the second bearing housing by the operation of the adjustment drive unit.

[0022] Specifically, the gap adjustment unit includes an adjustment drive unit, a first adjustment push unit, and a second adjustment push unit. One side of the adjustment drive unit is connected to the first adjustment push unit, and the other side of the adjustment drive unit is connected to the second adjustment push unit. The first adjustment push unit is connected to a first bearing housing and pressurizes the first bearing housing by the operation of the adjustment drive unit to move the first bearing housing. Additionally, the second adjustment push unit is positioned in a pressure member hole of the second bearing housing and pressurizes a pressure bearing housed in the second bearing housing by the operation of the adjustment drive unit.

[0023] Specifically, the gap adjustment member is positioned between the bearing housing of the outermost rolling roller assembly and the external support member among a plurality of rolling roller assemblies, and moves the bearing housing of the outermost rolling roller assembly.

[0024] Specifically, the gap adjustment unit includes an adjustment drive unit and an adjustment push unit, one side of the adjustment drive unit is connected to the adjustment push unit, and the other side of the adjustment drive unit is connected to an external support unit. The adjustment push unit is positioned in a pressure member hole of the bearing housing of the outermost rolling roller assembly, and pressurizes a pressure bearing housed in the bearing housing of the outermost rolling roller assembly by the operation of the adjustment drive unit.

[0025] A rolling device according to an embodiment of the present invention includes an external pressure member. The external pressure member is connected to the bearing housings of the outermost rolling roller assemblies among a plurality of rolling roller assemblies. The external pressure member is connected to the bearing housing of any one of the outermost rolling roller assemblies or to the bearing housings of all of the outermost rolling roller assemblies.

[0026] Specifically, the external pressure unit includes a pressure drive unit and a pressure push unit. One side of the pressure drive unit is connected to the pressure push unit, and the other side of the pressure drive unit is connected to a system or external support unit in which a rolling device is installed. The pressure push unit is connected to the bearing housing of the outermost rolling roller assembly and pressurizes the bearing housing by the operation of the pressure drive unit to move the bearing housing.

[0027] A rolling device according to an embodiment of the present invention includes an external support member. The external support member is connected to a bearing housing, a control drive unit, or an external pressure unit of the outermost rolling roller assemblies among a plurality of rolling roller assemblies. The external support member is a support surface or a support body provided in a system in which the rolling device is positioned.

[0028] Specifically, the bearing clearance of the pressure bearing is eliminated on the side where the pressure of the adjustment push part is applied, and the bearing clearance of the non-pressure bearing is eliminated on the side where the reaction force from the inner circumference of the housing body is applied, thereby restricting the movement of the roller shaft.

[0029] Specifically, the housing body includes an internal space, a roller shaft hole, and a pressure member hole. The internal space accommodates a plurality of bearings. The roller shaft hole communicates with the internal space, and a roller shaft is positioned therein. The pressure member hole communicates with the internal space.

[0030] Specifically, the roller shaft hole is a hole that penetrates one side and the other side of the housing body, and the pressure member hole is a hole that penetrates one side or the other side of the housing body.

[0031] Specifically, the housing body includes a guide plate. The guide plate is disposed in a pressure member hole and has a guide hole communicating with the pressure member hole. An adjustment push member or a pressure member is disposed in the guide hole.

[0032] Specifically, a pressure member is disposed in the pressure member hole of the housing body. When the adjustment push part presses the pressure member, the pressure member moves and presses some of the plurality of bearings.

[0033] Specifically, the plurality of bearings includes a first bearing, a second bearing, and a third bearing. The first bearing is positioned near the roller body of the rolling roller, the second bearing is positioned between the first bearing and the third bearing, and the third bearing is positioned far from the roller body. Each of the first bearing, the second bearing, and the third bearing consists of one bearing or two or more bearings.

[0034] Specifically, the pressure bearing is the second bearing.

[0035] A rolling device according to an embodiment of the present invention eliminates or minimizes changes in distance between rolling rollers caused by bearing clearance during material rolling.

[0036] In addition, the rolling device according to an embodiment of the present invention is provided with a bearing housing that accommodates three or more bearings, and prevents the roller shaft from moving and the roller shaft from being deformed by the force applied by the bearings to the roller shaft.

[0037] In addition, a rolling device according to an embodiment of the present invention comprises a gap adjustment unit and / or an external pressure unit, and by the gap adjustment unit and / or the external pressure unit pressurizing some of the plurality of bearings accommodated in a bearing housing, the bearing gap of the bearings supporting the roller shaft is eliminated or minimized.

[0038] In addition, the rolling device according to an embodiment of the present invention is equipped with a gap adjustment part, an external pressure part and / or an external support part to eliminate or minimize changes in the distance between rolling rollers during material rolling.

[0039] More detailed effects of the rolling device according to the embodiment of the present invention are described in the following embodiments for the implementation of the invention.

[0040] Figure 1 briefly shows a rolling device.

[0041] Figure 2 briefly illustrates the phenomenon in which a roller shaft moves due to the clearance of a bearing according to the difference in reaction force caused by the material being rolled.

[0042] Figure 3 briefly illustrates how the distance between roller bodies changes due to the reaction force of the material being rolled.

[0043] Figure 4 shows a bearing.

[0044] FIG. 5 shows the bearing housing of the present invention.

[0045] Figure 6 briefly shows the interior of the bearing housing of Figure 5.

[0046] Figure 7 shows the roller shaft, housing body, and pressure member separated.

[0047] Figure 8 shows the force relationship between bearing housings connected to adjacent rolling rollers.

[0048] Figure 9 shows the force relationship inside the bearing housing.

[0049] Figure 10 schematically illustrates the elimination of bearing clearance between the roller shaft and the bearing in close contact.

[0050] Figures 11 and 12 show the force relationship between multiple rolling roller assemblies.

[0051] Embodiments of the present invention will be described in more detail below with reference to the attached drawings. Regarding components of the present invention that can be clearly understood and easily reproduced by a person skilled in the art according to the prior art, specific descriptions thereof are omitted in order not to obscure the essence of the present invention.

[0052] The attached drawings are intended only to facilitate understanding of the embodiments disclosed in this specification, and the technical concept disclosed in this specification is not limited by the attached drawings.

[0053] A singular expression includes a plural expression unless the context clearly indicates otherwise.

[0054] Additionally, terms including ordinal numbers, such as first, second, etc., used herein may be used to describe various components, but said components should not be limited by said terms. Such terms are used solely for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be named the second component, and similarly, the second component may be named the first component.

[0055] Hereinafter, a rolling device according to an embodiment of the present invention will be described.

[0056] Hereinafter, the rolling device according to an embodiment of the present invention may be briefly referred to as the 'rolling device of the present invention'.

[0057] The rolling device of the present invention includes a rolling roller assembly (not labeled) and a gap adjustment unit (50) (see FIGS. 11 to 12).

[0058] The rolling roller assembly includes a rolling roller (10) and a bearing housing (30) (see FIG. 9, FIG. 11 to FIG. 12).

[0059] For reference, the roller shaft (12) of the rolling roller (10) is provided at both ends of the roller body (11) (see FIG. 1 and FIG. 3). FIG. 9, FIG. 11, and FIG. 12 show a roller shaft (12) provided at one end of the roller shafts (12) provided at both ends of the roller body (11) and a bearing housing (30) coupled to said roller shaft (12). The roller shaft (12) provided at the other end of the roller body (11) and the bearing housing (30) coupled to said roller shaft (12) are omitted because they are identical to the roller shaft (12) provided at one end of the roller body (11) and the bearing housing (30) coupled to said roller shaft (12).

[0060] The rolling roller assembly represents a combination of a rolling roller (10) and a bearing housing (30).

[0061] Specifically, the rolling roller assembly is shown as having a bearing housing (30) coupled to a roller shaft (12) provided at both ends of a roller body (11). A plurality of bearings (20) are accommodated in the bearing housing (30), and a pressure member (322) is coupled thereto. The pressure member (322) may be part of a gap adjustment unit (50) described later.

[0062] The rolling roller (10) includes a roller body (11) and a roller shaft (12). Since the roller body (11) and the roller shaft (12) are well known, they will be briefly described below.

[0063] The roller body (11) is formed in a rod shape having a preset length.

[0064] The cross-sectional shape of the roller body (11) is circular. The cross-sectional shape represents the shape of the cut surface when the roller body (11) is cut in a direction perpendicular to the longitudinal direction of the roller body (11).

[0065] Roller shafts (12) are provided at each end of the roller body (11).

[0066] The roller shaft (12) is formed in a rod shape having a preset length, and its cross-sectional shape is circular. The cross-sectional diameter of the roller shaft (12) is formed to be smaller than the cross-sectional diameter of the roller body (11).

[0067] The roller shaft (12) can be formed by extending from the end of the roller body (11) for a predetermined length. The longitudinal direction of the roller shaft (12) is the same as the longitudinal direction of the roller body (11).

[0068] A plurality of bearings (20) are coupled to each roller shaft (12).

[0069] Specifically, three or more bearings (20) are coupled to the roller shaft (12). As a result, the force applied to the roller shaft (12) by the bearings (20) is evenly distributed so that the roller shaft (12) does not move and the roller shaft (12) does not deform.

[0070] Multiple bearings (20) are accommodated in a bearing housing (30).

[0071] Also, one or more bearing housings (30) may be attached to each roller shaft (12). That is, according to the embodiment, two or more bearing housings (30) may be attached to one roller shaft (12).

[0072] The rolling roller (10) rotates. The rolling device of the present invention includes components that rotate the rolling roller (10).

[0073] The rolling device of the present invention includes a plurality of rolling roller assemblies. In FIGS. 11 and 12, three rolling roller assemblies are illustrated as an example. The plurality of rolling roller assemblies may be two or four or more.

[0074] Multiple rolling roller assemblies are spaced apart from each other in one direction.

[0075] Specifically, in the rolling device of the present invention, each rolling roller (10) is arranged side by side so that its length direction is parallel, and adjacent rolling rollers (10) are spaced apart by a predetermined distance.

[0076] While the rolling roller (10) rotates, the material enters between adjacent roller bodies (11) and is gradually thinned or deformed into a specific shape.

[0077] Referring to FIGS. 5 and 6, the bearing housing (30) is a case that accommodates the bearing (20).

[0078] The bearing housing (30) may include a housing body (31), a pressurizing member (322), and a guide plate (32).

[0079] The housing body (31) accommodates the bearing (20) and supports the roller shaft (12) of the rolling roller (10).

[0080] The housing body (31) can be formed as a polyhedron, for example. The housing body (31) can be formed as a hexahedron, as shown in FIG. 5, etc.

[0081] And, the housing body (31) includes an internal space(s). The internal space(s) is a space for accommodating a bearing (20). That is, the bearing (20) is placed in the internal space(s) of the housing body (31).

[0082] The internal space(s) of the housing body (31) includes a first space (s1), a second space (s2), and a third space (s3). That is, the internal space(s) of the housing body (31) can be divided into a first space (s1), a second space (s2), and a third space (s3).

[0083] When a bearing (20) is placed in the internal space (s) of a housing body (31) and the roller shaft (12) of a rolling roller (10) is pressed into the inner ring (w1) of the bearing (20), the first space (s1) is placed near the roller body (11) of the rolling roller (10), the second space (s2) is placed between the first space (s1) and the third space (s3), and the third space (s3) is placed far from the roller body (11). The first space (s1) and the second space (s2) are in communication with each other, and the second space (s2) and the third space (s3) are in communication with each other.

[0084] A first bearing (21), described later, is placed in the first space (s1), a second bearing (22), described later, is placed in the second space (s2), and a third bearing (23), described later, is placed in the third space (s3) (see FIG. 9).

[0085] The first space (s1) is surrounded by the inner surface of the housing body (31) forming the first space (s1) (see FIG. 6).

[0086] The inner surface of the housing body (31) forming the first space (s1) includes a first inner surface (n11) and a first inner circumferential surface (n12). The first space (s1) is surrounded by the first inner surface (n11) and the first inner circumferential surface (n12).

[0087] The first inner side (n11) is an inner side positioned on the side of the roller body (11) of the rolling roller (10) and is the opposite side of the one side (311) of the housing body (31). The roller shaft hole (h11) formed in the housing body (31) penetrates the one side (311) of the housing body (31) and the first inner side (n11).

[0088] The first inner surface (n12) is connected to the first inner surface (n11).

[0089] The first inner surface (n12) is the inner surface of the housing body (31) facing (or surrounding) the outer surface of the first bearing (21) (specifically the outer ring (w2)). The first inner surface (n12) may be formed as a curved surface corresponding to the outer surface of the first bearing (21) (specifically the outer ring (w2)).

[0090] The second space (s2) is adjacent to the aforementioned first space (s1) and is connected to each other.

[0091] The second space (s2) is surrounded by the inner surface of the housing body (31) that forms the second space (s2).

[0092] The inner surface of the housing body (31) forming the second space (s2) includes a second inner surface (n22). The second space (s2) is surrounded by the second inner surface (n22).

[0093] The second inner surface (n22) is the inner surface of the housing body (31) facing (or surrounding) the outer surface of the second bearing (22) (specifically the outer ring (w2)). The second inner surface (n22) may be formed as a curved surface corresponding to the outer surface of the second bearing (22) (specifically the outer ring (w2)).

[0094] A first connecting surface (n21) may be disposed between the first inner surface (n12) and the second inner surface (n22).

[0095] To elaborate, the first connecting surface (n21) is the inner surface of the housing body (31) connecting the first inner surface (n12) and the second inner surface (n22).

[0096] The first inner surface (n12) and the second inner surface (n22) are parallel to each other, and the first connecting surface (n21) is orthogonal to the first inner surface (n12) and the second inner surface (n22).

[0097] The third space (s3) is surrounded by the inner surface of the housing body (31) that forms the third space (s3).

[0098] The inner surface of the housing body (31) forming the third space (s3) includes a second inner surface (n31) and a third inner surface (n32). The third space (s3) is surrounded by the second inner surface (n31) and the third inner surface (n32).

[0099] The second inner side (n31) is an inner side facing the first inner side (n11) described above and positioned far from the roller body (11) of the rolling roller (10).

[0100] And, the second inner surface (n31) is the opposite side of the other surface (312) of the housing body (31). The roller shaft hole (h12) formed in the housing body (31) penetrates the other surface (312) of the housing body (31) and the second inner surface (n31).

[0101] The third inner surface (n32) is connected to the second inner surface (n31).

[0102] The third inner surface (n32) is the inner surface of the housing body (31) facing (or surrounding) the outer surface of the third bearing (23) (specifically the outer ring (w2)). The third inner surface (n32) may be formed as a curved surface corresponding to the outer surface of the third bearing (23) (specifically the outer ring (w2)).

[0103] A second connecting surface (n23) may be placed between the second inner surface (n22) and the third inner surface (n32).

[0104] To elaborate, the second connecting surface (n23) is the inner surface of the housing body (31) connecting the second inner surface (n22) and the third inner surface (n32).

[0105] The second inner surface (n22) and the third inner surface (n32) are parallel to each other, and the second connecting surface (n23) is orthogonal to the second inner surface (n22) and the third inner surface (n32).

[0106] In the case where one or more bearings (20) are arranged in each of the first space (s1), the second space (s2), and the third space (s3), each of the first space (s1), the second space (s2), and the third space (s3) has a size in which one or more bearings (20) can be arranged.

[0107] The fact that multiple bearings (20) are arranged in each of the first space (s1), the second space (s2), and the third space (s3) means that each of the first bearing (21), the second bearing (22), and the third bearing (23) can be composed of multiple bearings.

[0108] According to one embodiment, the size of the first space (s1) and the third space (s3) may be equal to the size of the bearing (20) placed in the first space (s1) and the third space (s3). Being equal in size includes cases where the size of the first space (s1) and the third space (s3) is slightly larger than the size of the bearing (20) so that the bearing (20) can be inserted into the first space (s1) and the third space (s3). Accordingly, when the bearing (20) is placed in the first space (s1) and the third space (s3), the movement of the bearing (20) is restricted.

[0109] Alternatively, according to another embodiment, the size of the first space (s1) and the third space (s3) may be larger than the size of the bearing (20) placed in the first space (s1) and the third space (s3). Accordingly, when the bearing (20) is placed in the first space (s1) and the third space (s3), the bearing (20) can move. For example, when the first bearing (21) and the third bearing (23) receive an external force, the first bearing (21) and the third bearing (23) can move in the direction in which the external force is applied (which may be referred to as the 'external force direction') and / or in a direction perpendicular to the external force direction.

[0110] Meanwhile, the size of the second space (s2) may be larger than the size of the second bearing (22). Accordingly, when the second bearing (22) is placed in the second space (s2), the second bearing (22) can move. For example, when the second bearing (22) receives an external force, the second bearing (22) can move in the direction of the external force and / or in a direction perpendicular to the direction of the external force.

[0111] According to an embodiment, the internal space(s) of the housing body (31) may include a fourth space or more. This depends on the number of bearings (20) accommodated in the housing body (31).

[0112] The housing body (31) accommodates a plurality of bearings (20) (see FIGS. 7 to 9). The plurality of bearings (20) includes at least three bearings (20).

[0113] Three or more bearings (20) ensure that the force applied to the roller shaft (12) by the bearings (20) is evenly distributed so that the roller shaft (12) does not move and the roller shaft (12) does not deform.

[0114] The bearing (20) applied in the present invention is a bearing (20) known in industrial settings. That is, the bearing (20) is a mechanical element that supports a rotating shaft and reduces friction between the rotating shaft and the support when the rotating shaft rotates. The rotating shaft represents a shaft that rotates while receiving a load, and in the present invention, it represents a roller shaft (12). The support serves to support the rotating shaft (roller shaft (12)).

[0115] The bearing (20) may be a known rolling bearing (20) (see FIG. 4). Accordingly, the bearing (20) is briefly described below.

[0116] The bearing (20) includes an inner ring (w1), an outer ring (w2), and a rotating body (w3). The rotating body (w3) may be a ball or a roller.

[0117] The roller shaft (12) of the rolling roller (10) is inserted and positioned in the center hole (20h) of the inner ring (w1).

[0118] Since the roller shaft (12) is pressed into the center hole (20h) of the inner ring (w1), the outer surface of the roller shaft (12) and the inner surface of the inner ring (w1) are in close contact, and there is no space between the outer surface of the roller shaft (12) and the inner surface of the inner ring (w1). Accordingly, when the roller shaft (12) rotates, the inner ring (w1) rotates together with the roller shaft (12).

[0119] In FIGS. 5, FIGS. 7 to 9, FIGS. 11 to 12, the inner ring (w1) of the bearing (20) is not shown. This is to ensure that the bearing (20) is easily recognizable in the drawings. Additionally, since the roller shaft (12) is pressed into the center hole (20h) of the inner ring (w1) and rotates together with the inner ring (w1) as if they were one unit, only the roller shaft (12) is depicted and the inner ring (w1) is omitted.

[0120] A plurality of bearings (20) include at least a first bearing (21), a second bearing (22), and a third bearing (23). The first bearing (21), the second bearing (22), and the third bearing (23) may have the same size as each other or may differ.

[0121] When the roller shaft (12) of the rolling roller (10) is pressed into the inner ring (w1) of each of the first bearing (21), the second bearing (22), and the third bearing (23), the first bearing (21) is positioned closer to the roller body (11) of the rolling roller (10), the second bearing (22) is positioned between the first bearing (21) and the third bearing (23), and the third bearing (23) is positioned further away from the roller body (11) (see FIG. 8, FIG. 9, FIG. 11, etc.).

[0122] Each of the first bearing (21), the second bearing (22), and the third bearing (23) may be a single bearing or may be provided with multiple bearings.

[0123] The housing body (31) includes a roller shaft hole (h1) (see FIG. 6).

[0124] The roller shaft hole (h1) is a hole that penetrates one side (311) and the other side (312) of the housing body (31). The one side (311) and the other side (312) are surfaces facing opposite directions. The one side (311) may be a surface facing the roller body (11) of the rolling roller (10).

[0125] The roller shaft hole (h1) communicates with the internal space(s) of the housing body (31).

[0126] The roller shaft (12) of the rolling roller (10) is inserted and positioned in the roller shaft hole (h1). The roller shaft (12) is inserted into the center hole (20h) of the bearing (20) positioned in the roller shaft hole (h1) and the internal space (s) of the housing body (31).

[0127] Additionally, the housing body (31) includes a pressure member hole (h2).

[0128] The pressure member hole (h2) is a hole that penetrates one side (313) or the other side (314) of the housing body (31). To elaborate, as seen in FIGS. 5 to 7, FIG. 9, etc., the pressure member hole (h2) is formed on one side (313) of the housing body (31). However, according to the embodiment, the pressure member hole (h2) may be formed on the other side (314) of the housing body (31).

[0129] One side (313) and the other side (314) of the housing body (31) are surfaces facing opposite directions. The one side (313) and the other side (314) are surfaces positioned between one side (311) and the other side (312) of the housing body (31), and are surfaces connecting the one side (311) and the other side (312).

[0130] The pressure member hole (h2) communicates with the internal space(s) of the housing body (31).

[0131] A pressure member (322) and / or a guide plate (32) may be inserted and placed in the pressure member hole (h2).

[0132] When a bearing (20) is placed in the internal space (s) of the housing body (31), the outer surface of the bearing (20) is exposed to the outside of the housing body (31) through the pressure member hole (h2). When an external force is applied while the pressure member (322) is placed in the pressure member hole (h2), the pressure member (322) presses the outer surface (outer circumference) of the bearing (20).

[0133] The pressure member hole (h2) on one side (313) or the other side (314) of the housing body (31) may be positioned differently depending on the position of the bearing (20) that the pressure member (322) presses.

[0134] For example, as illustrated in FIGS. 7, 9, 11 to 12, when the pressing member (322) presses the second bearing (22), the pressing member hole (h2) may be formed on one side (313) or the other side (314) of the housing body (31) where the second bearing (22) is located.

[0135] And, for example, although not illustrated, when the pressing member (322) presses the first bearing (21) and / or the third bearing (23), the pressing member hole (h2) may be formed on one side (313) or the other side (314) of the housing body (31) at the location where the first bearing (21) and / or the third bearing (23) are located.

[0136] The pressing member (322) presses some of the bearings (20) among the plurality of bearings (20). For example, the pressing member (322) can press the second bearing (22) (see FIGS. 7 to 9, etc.), or, can press the first bearing (21) and the third bearing (23) (not shown).

[0137] The pressure member (322) is movably coupled to the housing body (31).

[0138] Specifically, the pressure member (322) can move while positioned in the pressure member hole (h2) formed in the housing body (31).

[0139] The pressure member (322) can be formed in a rod shape having a preset length.

[0140] The pressure member (322) includes one side and the other side. The one side and the other side face opposite sides.

[0141] When the pressure member (322) is placed in the pressure member hole (h2), one side of the pressure member (322) faces the internal space (s) of the housing body (31), and the other side of the pressure member (322) faces the outside of the housing body (31).

[0142] One side of the pressurizing member (322) contacts the bearing (20) housed in the housing body (31) and presses the bearing (20).

[0143] The shape of one side and the shape of the other side of the pressure member (322) can be formed differently from each other.

[0144] For example, one side of the pressure member (322) may be formed in a block shape. And, the part of the block shape that contacts the outer surface of the bearing (20) (specifically the outer ring (w2)) may be formed in a shape corresponding to the outer surface of the bearing (20) (e.g., a curved surface) so as to make it easier to press the outer surface of the bearing (20).

[0145] If there are multiple bearings (20) that are pressed by the pressurizing member (322), the contact surface of the pressurizing member (322) that contacts the multiple bearings (20) can be provided with a size that contacts the multiple bearings (20).

[0146] The pressure member (322) can be placed in the guide hole (321h1) of the guide plate (32) described later.

[0147] According to an embodiment of the present invention, the pressure member (322) may be part of the gap adjustment unit (50) described later. That is, the pressure member (322) may be the adjustment push unit (52) of the gap adjustment unit (50) described later. The adjustment push unit (52) acts as the pressure member (322).

[0148] Alternatively, according to another embodiment, the pressure member (322) may be connected to the control push member (52). In other words, the pressure member (322) and the control push member (52) are manufactured separately (they are physically independent components), and the control push member (52) can press the pressure member (322) to move the pressure member (322) toward the bearing (20). As a result, the pressure member (322) presses the bearing (20).

[0149] The bearing housing (30) of the present invention may or may not be provided with a guide plate (32). If the pressure member (322) can be easily moved and perform its function smoothly while placed in the pressure member hole (h2) of the housing body (31), the guide plate (32) may not be provided in the bearing housing (30). The following description of the guide plate (32) may be applied to an embodiment in which the guide plate (32) is provided.

[0150] The guide plate (32) is formed in a plate shape with a preset thickness.

[0151] The guide plate (32) can be placed (or inserted) into the pressure member hole (h2) formed in the housing body (31).

[0152] The guide plate (32) includes one side and the other side. The one side and the other side of the guide plate (32) are surfaces facing opposite directions based on the thickness of the guide plate (32).

[0153] When the guide plate (32) is inserted into the pressure member hole (h2), one side of the guide plate (32) may face the internal space (s) of the housing body (31), and the other side of the guide plate (32) may face the outside of the housing body (31).

[0154] The other side of the guide plate (32) may be part of one side (313) or the other side (314) of the housing body (31). Additionally, when the guide plate (32) is coupled with the housing body (31), the guide plate (32) covers the pressure member hole (h2) formed in the housing body (31).

[0155] A stepped surface (313a) may be formed in the pressure member hole (h2). Due to the stepped surface (313a), the diameter of the pressure member hole (h2) changes in the direction toward the internal space (s) of the housing body (31).

[0156] For example, the diameter of the pressure member hole (h2) on the outer side of the housing body (31) with respect to the stepped surface (313a) may be larger than the diameter on the inner space (s) side of the housing body (31).

[0157] The stepped surface (313a) of the pressure member hole (h2) may be formed on part or all of the inner surface of the side of the housing body (31) surrounding the pressure member hole (h2). The side of the housing body (31) represents one side (313) or the other side (314).

[0158] When the pressure member (322) is placed in the pressure member hole (h2), the pressure member (322) is placed between the stepped surface (313a) formed in the pressure member hole (h2), and one end of the pressure member (322) reaches the internal space (s) of the housing body (31). Accordingly, when the pressure member (322) moves due to an external force, one end of the pressure member (322) presses the outer surface of the bearing (20) (specifically the outer ring (w2)).

[0159] The guide plate (32) can be supported by a stepped surface (313a) formed in the pressure member hole (h2). Specifically, part or all of the edge of the guide plate (32) can be supported by the stepped surface (313a) formed in the pressure member hole (h2).

[0160] The connection between the guide plate (32) and the housing body (31) can be made by a fastening member (p) as shown in FIGS. 5 to 7. The fastening member (p) may be, for example, a screw or a bolt and a nut.

[0161] A guide hole (321h1) is formed in the guide plate (32). The guide hole (321h1) is a hole that penetrates one side and the other side of the guide plate (32).

[0162] When the guide plate (32) is combined with the housing body (31), the guide hole (321h1) communicates with the pressure member hole (h2).

[0163] A pressure member (322) is placed in the guide hole (321h1). The pressure member (322) can move while placed in the guide hole (321h1).

[0164] In an embodiment where the adjustment push part (52) of the gap adjustment part (50) performs the role of a pressure member (322), the adjustment push part (52) can move while positioned in the guide hole (321h1).

[0165] The shape and size of the guide hole (321h1) may correspond to the cross-sectional shape and cross-sectional diameter of the pressure member (322). Accordingly, the pressure member (322) may be supported on the inner surface of the guide plate (32) surrounding the guide hole (321h1) while positioned in the guide hole (321h1).

[0166] A fastening hole (321h2) is formed in the guide plate (32). The fastening hole (321h2) is a hole that penetrates the guide plate (32), and multiple holes may be provided.

[0167] The fastening hole (321h2) of the guide plate (32) can be formed on the edge side of the guide plate (32).

[0168] Also, a fastening hole (h3) is formed in the housing body (31). The fastening hole (h3) of the housing body (31) communicates with the fastening hole (321h2) formed in the guide plate (32).

[0169] The fastening hole (h3) of the housing body (31) may be formed on the stepped surface (313a) formed in the pressure member hole (h2), or, according to another embodiment (not shown), may be formed on one side (313) or the other side (314) of the housing body (31) adjacent to the pressure member hole (h2).

[0170] The fastening hole (h3) of the housing body (31) may be formed as a groove shape recessed to a preset depth, or, according to another embodiment (not shown), may be formed as a hole shape penetrating the stepped surface (313a) of the pressure member hole (h2) or one side (313) or the other side (314) of the housing body (31). A plurality of fastening holes (h3) of the housing body (31) may be provided.

[0171] A screw groove is formed on the inner surface of the fastening hole (h3) of the housing body (31).

[0172] The fastening member (p) is inserted sequentially into the fastening hole (321h) of the guide plate (32) and the fastening hole (h3) of the housing body (31) and is fixed to the housing body (31).

[0173] With the bearing (20) and the roller shaft (12) positioned inside the bearing housing (30), the force relationship appearing inside the bearing housing (30) is as follows.

[0174] Referring to FIG. 9, a plurality of bearings (20) (e.g., a first bearing (21), a second bearing (22), and a third bearing (23)) are arranged in the internal space(s) of a housing body (31), and a roller shaft (12) of a rolling roller (10) is inserted and arranged in the center hole (20h) of the plurality of bearings (20). When a pressure member (322) is arranged in the pressure member hole (h2) of the housing body (31), when an external force is applied to the pressure member (322), the pressure member (322) moves and presses some of the bearings (20). The pressure member (322) can press, for example, the second bearing (22).

[0175] The pressurizing member (322) presses the outer surface of the second bearing (22) (specifically the outer ring (w2)).

[0176] The pressing force (f1) applied by the pressing member (322) to the second bearing (22) is transmitted sequentially to the outer ring (w2), the rotating body (w3), and the inner ring (w1) of the second bearing (22), and then to the roller shaft (12). Due to the pressing of the pressing member (322), the inner ring (w1), the rotating body (w3), and the outer ring (w2) of the second bearing (22) are pressed against the roller shaft (12). Accordingly, the roller shaft (12) is pushed (moved) in the direction in which the pressing force (f1) is applied.

[0177] That is, the outer ring (w2) of the second bearing (22) and the roller shaft (12) are in close contact by the pressure (f1) of the pressure member (322). The second bearing (22) and the roller shaft (12) are in close contact on the side where the pressure (f1) is applied. Accordingly, the bearing gap of the second bearing (22) is eliminated or minimized on the side where it is in close contact (the side where the pressure (f1) is applied) (see FIG. 10).

[0178] The above bearing clearance refers to the gap (gap) existing between the inner ring (w1) and the rotating body (w3) of the bearing (20) and / or between the rotating body (w3) and the outer ring (w2). The 'bearing clearance' may be referred to as 'bearing clearance'.

[0179] For reference, (a) of FIG. 10 shows the state before the pressing member (322) presses the bearing (20), and (b) shows the state after the pressing member (322) presses the second bearing (22). In FIG. 10, the inner ring (w1) and the rotating body (w3) of the bearing (20) are omitted. This is to allow the bearing clearance to be easily recognized.

[0180] Meanwhile, when the roller shaft (12) is pushed (moved) in the direction where the pressure (f1) is applied, the roller shaft (12) pushes the first bearing (21) and the third bearing (23) in the direction where the pressure (f1) is applied. Accordingly, the first bearing (21) and the third bearing (23) are pushed in the direction where the pressure (f1) is applied.

[0181] At this time, the first bearing (21) (specifically the outer ring (w2)) comes into close contact with the first inner surface (n12) of the housing body (31), and is no longer pushed (moved) by the first inner surface (n12).

[0182] To elaborate, the first inner surface (n12) in close contact with the first bearing (21) (specifically the outer ring (w2)) applies a reaction force (f2) to the first bearing (21) in a direction opposite to the direction of the pressure (f1) applied by the roller shaft (12), thereby supporting the first bearing (21).

[0183] That is, the outer ring (w2) of the first bearing (21) and the roller shaft (12) are in close contact due to the reaction force (f2) applied by the first inner surface (n12) to the first bearing (21). The first bearing (21) and the roller shaft (12) are in close contact on the side where the reaction force (f2) is applied. Accordingly, the bearing clearance of the first bearing (21) is eliminated or minimized on the side where it is in close contact (the side where the reaction force (f2) is applied) (see FIG. 10).

[0184] And, the third bearing (23) (specifically the outer ring (w2)) also comes into close contact with the third inner surface (n32) of the housing body (31), and is no longer pushed (moved) by the third inner surface (n32).

[0185] To elaborate, the third inner surface (n32) in close contact with the third bearing (23) (specifically the outer ring (w2)) applies a reaction force (f3) to the third bearing (23) in a direction opposite to the direction of the pressure (f1) applied by the roller shaft (12), thereby supporting the third bearing (23).

[0186] That is, the outer ring (w2) of the third bearing (23) and the roller shaft (12) are in close contact due to the reaction force (f3) applied by the third inner surface (n32) to the third bearing (23). The third bearing (23) and the roller shaft (12) are in close contact on the side where the reaction force (f3) is applied. Accordingly, the bearing clearance of the third bearing (23) is eliminated or minimized on the side where it is in close contact (the side where the reaction force (f3) is applied) (see FIG. 10).

[0187] As a result, the roller shaft (12) of the rolling roller (10) is fixed without moving due to the pressing force (f1) applied by the pressing member (322) to the second bearing (22), the reaction force (f2) applied by the first inner surface (n12) of the housing body (31) to the first bearing (21), and the reaction force (f3) applied by the third inner surface (n32) of the housing body (31) to the third bearing (23) (see FIG. 10). The movement of the roller shaft (12) is restricted.

[0188] This is because, as previously mentioned, the bearing gap of the second bearing (22) is eliminated or minimized on the side where the pressure (f1) is applied, and the bearing gap of the first bearing (21) and the third bearing (23), respectively, is eliminated or minimized on the side where the reaction force (f2, f3) is applied.

[0189] As the pressurizing member (322) pressurizes some of the bearings (20), the bearing gap of the bearings (20) housed in the housing body (31) is eliminated or minimized on the side where the bearings (20) are in close contact with the roller shaft (12), so the roller shaft (12) of the rolling roller (10) is fixed without moving. As a result, the change in distance between the rolling rollers (10) caused by the bearing gap during material rolling is non-existent or minimized.

[0190] Thus, the bearing housing (30) of the present invention eliminates or minimizes the bearing gap of each of the plurality of bearings (20) when some (one or more) of the plurality of bearings (20) are pressed by an external force, on the side where each of the plurality of bearings (20) comes into close contact with the roller shaft (12).

[0191] A plurality of bearings (20) housed in a bearing housing (30) support the roller shaft (12) and fix the roller shaft (12) so that it does not move.

[0192] In the present specification, a bearing (20) that is directly pressed by a pressing member (322) may be named a ‘pressing bearing (20)’, and a bearing (20) that is not directly pressed by a pressing member (322) may be named a ‘non-pressing bearing (20)’. Here, the bearing (20) that is directly pressed by a pressing member (322) represents a bearing (20) that is in contact with the pressing member (322).

[0193] For example, in FIGS. 8 to 12, the pressure bearing (20) is the second bearing (22), and the non-pressure bearing (20) is the first bearing (21) and the third bearing (23).

[0194] As the pressurizing member (322) presses the pressurizing bearing (20), the pressurizing force transmitted to the pressurizing bearing (20) is transmitted to the roller shaft (12), and the roller shaft (12) presses the non-pressurizing bearing (20).

[0195] The non-pressure bearing (20) comes into close contact with the inner surface of the housing body (31) that contacts the non-pressure bearing (20) (specifically the outer ring (w2)), and movement is restricted by the reaction force applied by the inner surface.

[0196] As a result, the roller shaft (12) of the rolling roller (10) is fixed without moving due to the pressing force applied by the pressing member (322) to the pressing bearing (20) and the reaction force applied by the inner surface of the housing body (31) to the non-pressure bearing (20). The movement of the roller shaft (12) is restricted.

[0197] According to an embodiment of the present invention, among the bearings (20) housed in the bearing housing (30), the pressure bearing (20) is used to pressure the roller shaft (12), and the non-pressure bearings (20) can be used to support the roller shaft (12).

[0198] That is, the pressure bearing (20) is used only for pressure without supporting (or mounting) the roller shaft (12), and the non-pressure bearing (20) is used to support (or mount) the roller shaft (12).

[0199] For example, the size of the internal space(s) in which the pressure bearing (20) is accommodated may be made larger than the size of the pressure bearing (20) so that the pressure bearing (20) is not supported by the inner surface of the bearing housing (30). Alternatively, a pressure bearing (20) smaller than the size of the non-pressure bearing (20) may be used.

[0200] The rolling device of the present invention includes a gap adjustment unit (50).

[0201] Additionally, the rolling device of the present invention includes an external pressure member (40) and / or an external support member (es).

[0202] The rolling device of the present invention can adjust and fix the distance between rolling roller assemblies by using (or controlling) the gap adjustment unit (50) and the external pressure unit (40).

[0203] The gap adjustment unit (50) and the external pressure unit (40) can adjust and fix the distance between the rolling roller assemblies.

[0204] The gap adjustment unit (50) can be positioned between a plurality of rolling roller assemblies, or between the outermost rolling roller assembly and the external support (es).

[0205] And, the external pressure part (40) can be placed on the outermost rolling roller assemblies.

[0206] For example, looking at FIGS. 11 and 12, three rolling roller assemblies are arranged. In the drawings, the three rolling roller assemblies are rolling roller assembly (1), rolling roller assembly (2), and rolling roller assembly (3).

[0207] In FIG. 11, the gap adjustment unit (50) is positioned between the rolling roller assembly (1) and the rolling roller assembly (2) and between the rolling roller assembly (2) and the rolling roller assembly (3), and is positioned between the outer support (es) on the left and the rolling roller assembly (1) and between the rolling roller assembly (3) and the outer support (es) on the right. Among these, the gap adjustment unit (50) positioned between the outer support (es) on the left and the rolling roller assembly (1) and / or between the rolling roller assembly (3) and the outer support (es) on the right can be replaced with an outer pressure unit (40).

[0208] In Fig. 12, an external pressure member (40) is positioned between the rolling roller assembly (3) and the external support member (es) on the right.

[0209] The outermost rolling roller assemblies represent the rolling roller assemblies positioned at the outermost edge among the plurality of rolling roller assemblies provided by the rolling device of the present invention.

[0210] For example, when multiple rolling roller assemblies are arranged side by side from left to right at predetermined intervals, the outermost rolling roller assemblies represent the rolling roller assembly placed at the far left end (rolling roller assembly (1) in FIG. 11 and FIG. 12) and the rolling roller assembly placed at the far right end (rolling roller assembly (3) in FIG. 11 and FIG. 12).

[0211] In the present invention, the rolling roller assembly located at the outermost end may be named the 'outermost rolling roller assembly', the rolling roller assembly located at the far left end may be named the 'left outermost rolling roller assembly', and the rolling roller assembly located at the far right end may be named the 'right outermost rolling roller assembly'.

[0212] The gap adjustment part (50) and the external pressure part (40) are a type of actuator.

[0213] The gap adjustment unit (50) and the external pressure unit (40) are mechanical devices that move the rolling roller assembly.

[0214] The gap adjustment part (50) and the external pressure part (40) not only move the bearing housing (30) but also restrict the movement of the bearing housing (30). Accordingly, the rolling roller (10) connected to the bearing housing (30) also moves or its movement is restricted.

[0215] Specifically, the gap adjustment part (50) and the external pressure part (40) pressurize the bearing housing (30) to move the bearing housing (30).

[0216] Additionally, the gap adjustment unit (50) and the external pressure unit (40) continue to press the bearing housing (30) even when the bearing housing (30) is pressed, thereby restricting the movement of the bearing housing (30) so that the bearing housing (30) does not move any further.

[0217] The gap adjustment unit (50) and the external pressure unit (40) can move the bearing housing (30) using a motor device driven by electricity or hydraulics, or a cylinder device using hydraulics. The hydraulics include pneumatics. Since the motor device and the cylinder device are well known, a detailed description is omitted.

[0218] The gap adjustment unit (50) and the external pressure unit (40) can move the bearing housing (30) using a motor device and a cylinder device as well as other types of driving devices.

[0219] The gap adjustment unit (50) can be positioned (or connected) between adjacent bearing housings (30) and / or the bearing housing (30) of the outermost rolling roller assembly.

[0220] The spacing adjustment unit (50) can adjust the distance between adjacent bearing housings (30) and maintain a constant distance between adjacent bearing housings (30).

[0221] According to an embodiment of the present invention, the gap adjustment unit (50) may include a driving unit (51) and a push unit (52). The driving unit (51) may be named 'adjustment driving unit (51)' to distinguish it from other driving units, and the push unit (52) may be named 'adjustment push unit (52)' to distinguish it from other push units.

[0222] The control drive unit (51) may be the aforementioned motor device or cylinder device.

[0223] One side of the control drive unit (51) is connected to the control push unit (52), and the other side of the control drive unit (51) may be connected to either of the adjacent bearing housings (30) (which may be named the 'first bearing housing (30)') or an external support (es). The one side and the other side of the control drive unit (51) face opposite directions.

[0224] The rolling device of the present invention includes a component connecting a control drive unit (51) and a control push unit (52), and includes a component that enables the control push unit (52) to move away from the control drive unit (51).

[0225] Additionally, the rolling device of the present invention includes a component connecting the control drive unit (51) and the bearing housing (30) (e.g., the first bearing housing (30) described above) or a component connecting the control drive unit (51) and the external support unit (es).

[0226] According to an embodiment of the present invention, the adjusting push member (52) is positioned in the pressure member hole (h2) of another of the adjacent bearing housings (30) (which may be referred to as the 'second bearing housing (30)') and can apply pressure to the pressure bearing (20) housed in the second bearing housing (30). In this embodiment, the adjusting push member (52) performs the role of the pressure member (322).

[0227] Alternatively, according to another embodiment, the adjusting push member (52) may be connected (or in contact) with a pressure member (322) disposed in a pressure member hole (h2) of another of the adjacent bearing housings (30) (which may be referred to as the 'second bearing housing (30)'), and may press the pressure member (322) so that the pressure member (322) presses the pressure bearing (20) housed in the second bearing housing (30).

[0228] Alternatively, in an embodiment where the gap adjustment member (50) is positioned between the external support member (es) and the first bearing housing (30), the adjustment push member (52) is positioned in the pressure member hole (h2) of the first bearing housing (30) and can press the pressure bearing (20) received in the first bearing housing (30).

[0229] The rolling device of the present invention includes a component that connects the control push part (52) and the bearing housing (30) (e.g., the second bearing housing (30) described above).

[0230] Additionally, the rolling device of the present invention may include a component connecting the control push part (52) and the pressing member (322).

[0231] The control push unit (52) is connected to the control drive unit (51), and when the control drive unit (51) is operated, it can move in one direction or in the opposite direction of the one direction.

[0232] For example, when the control drive unit (51) is operated, the control push unit (52) moves in one direction and presses the pressure bearing (20) housed in the second bearing housing (30). The same applies to an embodiment in which the control push unit (52) presses the pressure member (322) to press the pressure bearing (20). As a result, the distance between the first bearing housing (30) and the second bearing housing (30) can be further separated by a second distance than a preset distance (first distance). The second distance can be maintained at a constant level by the operation of the control drive unit (51).

[0233] To elaborate, the pressurizing force (e.g., f26 in FIG. 11) applied by the control pusher (52) to the pressurized bearing (20) is transmitted to the roller shaft (12) and the non-pressurized bearing (20), and the second bearing housing (30) can move by this transmitted force. At this time, the opposing force (f17) to the pressurizing force (f26) applied to the pressurized bearing (20) is also transmitted to the control driveer (51), and the first bearing housing (30) can also move by this transmitted force.

[0234] Even if the adjustment drive unit (51) continues to operate, the distance (second distance) between the first bearing housing (30) and the second bearing housing (30) can be maintained at a constant level without further separation. This is because another gap adjustment unit (50) or an external pressure unit (40) pressurizes the first bearing housing (30) and the second bearing housing (30) from opposite sides. The first bearing housing (30) and the second bearing housing (30) do not move due to the balance of forces applied to them.

[0235] And, when the adjustment drive unit (51) is operated, the adjustment push unit (52) moves in the opposite direction of one direction so that it no longer presses the pressure bearing (20) housed in the second bearing housing (30) or presses it weakly. As a result, the distance between the first bearing housing (30) and the second bearing housing (30) can be separated by a third distance that is reduced from the second distance. The third distance can be maintained at a constant level by the operation of the adjustment drive unit (51).

[0236] To elaborate, the pressure applied to the pressure bearing (20) (e.g., f26 in FIG. 11) is eliminated or weakened, thereby reducing the distance between the first bearing housing (30) and the second bearing housing (30).

[0237] According to another embodiment (not shown) of the present invention, the gap adjustment unit (50) may include an adjustment driving unit, a first adjustment push unit, and a second adjustment push unit.

[0238] The control drive unit may be the aforementioned motor device or cylinder device.

[0239] One side of the control drive unit may be connected to the first control push unit, and the other side of the control drive unit may be connected to the second control push unit. The one side and the other side of the control drive unit face opposite directions. Accordingly, the first control push unit and the second control push unit are positioned on opposite sides.

[0240] The rolling device of the present invention includes a component connecting a control drive unit, a first control push unit, and a second control push unit, and includes a component that enables the first control push unit and the second control push unit to move from the control drive unit.

[0241] The control drive unit can be positioned between adjacent bearing housings (30), that is, between the first bearing housing (30) and the second bearing housing (30).

[0242] Alternatively, the control drive unit may be positioned between the bearing housing (30) of the outermost rolling roller assembly and the external support (es).

[0243] According to an embodiment of the present invention, a first adjustment push member is connected to a first bearing housing (30) and can move the first bearing housing (30) by pressing the first bearing housing (30). Additionally, a second adjustment push member is positioned in a pressure member hole (h2) of the second bearing housing (30) and can press a pressure bearing (20) housed in the second bearing housing (30). In this embodiment, the second adjustment push member performs the role of a pressure member (322).

[0244] Alternatively, according to another embodiment, the first adjustment push member is connected to the first bearing housing (30) and can move the first bearing housing (30) by pressing the first bearing housing (30). Then, the second adjustment push member is connected (or in contact) with a pressure member (322) disposed in a pressure member hole (h2) of the second bearing housing (30) and can press the pressure member (322) so that the pressure member (322) presses the pressure bearing (20) housed in the second bearing housing (30).

[0245] The rolling device of the present invention includes a component connecting a first adjustment push unit and a first bearing housing (30), and may include a component connecting a second adjustment push unit and a pressing member (322).

[0246] The first adjustment push part being connected to the first bearing housing (30) includes one end of the first adjustment push part being coupled to one side of the first bearing housing (30), and also includes one end of the first adjustment push part moving to contact one side of the first bearing housing (30) and continuously pressing said side to maintain a state of contact with one side of the first bearing housing (30).

[0247] The first control push unit and the second control push unit are connected to the control drive unit, and when the control drive unit operates, it can move in one direction or in the opposite direction of the one direction.

[0248] For example, when the adjustment drive unit is operated, the first adjustment push unit moves in one direction to move the first bearing housing (30) connected to the first adjustment push unit in one direction, and the second adjustment push unit moves in the opposite direction of the said one direction to apply pressure to the pressure bearing (20) housed in the second bearing housing (30). The same applies to an embodiment in which the adjustment push unit (52) applies pressure to the pressure member (322) to apply pressure to the pressure bearing (20). As a result, the distance between the first bearing housing (30) and the second bearing housing (30) can be further separated by a second distance than a preset distance (first distance). The second distance can be maintained at a constant level by the operation of the adjustment drive unit.

[0249] Even if the adjustment drive unit continues to operate, the distance (second distance) between the first bearing housing (30) and the second bearing housing (30) can be maintained at a constant level without further separation because the other gap adjustment unit (50) or the external pressure unit (40) also pressurizes the first bearing housing (30) and the second bearing housing (30) from the opposite side.

[0250] And, when the adjustment drive unit is operated, the first adjustment push unit moves in the opposite direction of one direction to move the first bearing housing (30) connected to the first adjustment push unit in the opposite direction of one direction, and the second adjustment push unit moves in one direction to no longer press the pressure bearing (20) housed in the second bearing housing (30) or to press it weakly. As a result, the distance between the first bearing housing (30) and the second bearing housing (30) can be separated by a third distance that is reduced from the second distance. The third distance can be maintained at a constant level by the operation of the adjustment drive unit.

[0251] According to an embodiment, the aforementioned adjustment push part may protrude from one side of the adjustment drive part (51), such as a piston, for example, or may be retracted into one side of the adjustment drive part (51).

[0252] The rolling device of the present invention includes an external pressure member (40) and an external support member (es), and can be supported by these.

[0253] The external pressure member (40) and the external support member (es) may be connected to any one or all of the outermost rolling roller assemblies. The outermost rolling roller assemblies represent, for example, the left outermost rolling roller assembly and the right outermost rolling roller assembly.

[0254] In FIG. 12, the gap adjustment part (50) positioned between the external support part (es) and the bearing housing (30) of the rolling roller assembly (1) can be replaced with an external pressure part (40). Also, the external pressure part (40) connected to the side of the bearing housing (30) of the rolling roller assembly (3) can be replaced with an external support part (es).

[0255] According to an embodiment of the present invention, the gap adjustment member (50) disposed between the bearing housing (30) of the rolling roller assembly (3) in FIG. 11 and the external support member (es) may not be provided. In this embodiment, the external support member (es) directly supports the bearing housing (30) of the rolling roller assembly (3).

[0256] The external pressure member (40) is positioned on one side of the bearing housing (30) of the outermost rolling roller assembly. In the present invention, the bearing housing (30) of the outermost rolling roller assembly may be named the 'outermost bearing housing (30)'.

[0257] The external pressure member (40) can apply pressure to the outermost bearing housing (30) to adjust the distance between adjacent bearing housings (30) and maintain a constant distance between adjacent bearing housings (30).

[0258] According to an embodiment of the present invention, the external pressure unit (40) may include a driving unit (41) and a pushing unit (42). The driving unit (41) may be named 'pressure driving unit (41)' to distinguish it from other driving units, and the pushing unit (42) may be named 'pressure pushing unit (42)' to distinguish it from other pushing units.

[0259] The pressurized drive unit (41) may be the aforementioned motor device or cylinder device.

[0260] One side of the pressure drive unit (41) is connected to the pressure push unit (42), and the other side of the pressure drive unit (41) may be coupled to a system or external support unit (es) on which the rolling device of the present invention is placed. The one side and the other side of the pressure drive unit (41) face opposite directions.

[0261] The rolling device of the present invention includes a component connecting a pressure drive unit (41) and a pressure push unit (42), and includes a component that enables the pressure push unit (42) to move away from the pressure drive unit (41).

[0262] Additionally, the rolling device of the present invention includes a component that connects a pressure drive unit (41) and a system or external support unit (es) on which the rolling device of the present invention is positioned.

[0263] The pressure pusher (42) is connected to the outermost bearing housing (30) and can move the outermost bearing housing (30) by pressing the outermost bearing housing (30).

[0264] The rolling device of the present invention includes a component that connects the pressure push part (42) and the outermost bearing housing (30).

[0265] The fact that the pressure push part (42) is connected to the outermost bearing housing (30) includes one end of the pressure push part (42) being coupled to one side of the outermost bearing housing (30), and also includes one end of the pressure push part (42) moving to contact one side of the outermost bearing housing (30) and continuously pressing said side to maintain a state of contact with one side of the outermost bearing housing (30).

[0266] The pressure push unit (42) is connected to the pressure drive unit (41), and when the pressure drive unit (41) operates, it can move in one direction or in the opposite direction of the one direction.

[0267] For example, referring to FIG. 12, when the pressure drive unit (41) is operated and the pressure push unit (42) moves in one direction (left in FIG. 12), the pressure push unit (42) presses the outermost bearing housing (30) (third bearing housing (30)) connected to the pressure push unit (42) with a constant force (f11). Accordingly, the outermost bearing housing (30) moves in one direction.

[0268] And, the pressing force (f11) that the pressing push part (42) presses the third bearing housing (30) is transmitted sequentially through a plurality of gap adjustment parts (50) to the bearing housing (30) (second bearing housing (30)) adjacent to the third bearing housing (30) and the bearing housing (30) (first bearing housing (30)) adjacent to the second bearing housing (30).

[0269] As a result, the distance between the third bearing housing (30) and the second bearing housing (30), and the distance between the second bearing housing (30) and the first bearing housing (30), can be reduced further than the preset distance (first distance) and separated by a second distance. The second distance can be maintained at a constant level by the operation of the pressure drive unit (41).

[0270] Even if the pressure drive unit (41) continues to operate, the distance between the first bearing housing (30) and the second bearing housing (30) (second distance) and the distance between the second bearing housing (30) and the third bearing housing (30) (second distance) can be maintained at a constant level without further separation.

[0271] This is because the first gap adjustment part (50) connected to the first bearing housing (30), the second gap adjustment part (50) positioned between the first bearing housing (30) and the second bearing housing (30), and the third gap adjustment part (50) positioned between the second bearing housing (30) and the third bearing housing (30) press or support the first bearing housing (30) to the third bearing housing (30) in the opposite direction (right in FIG. 12).

[0272] The first bearing housing (30) to the third bearing housing (30) and the roller shaft (12) coupled to each of the bearing housings (30) are not moved by the balance of the force applied to them.

[0273] And, when the pressure drive unit (41) operates and the pressure push unit (42) moves in the opposite direction of one direction (right in FIG. 12), the third bearing housing (30) connected to the pressure push unit (42) also moves in the opposite direction of one direction.

[0274] As a result, the distance between the third bearing housing (30) and the second bearing housing (30), the distance between the second bearing housing (30) and the first bearing housing (30), and the distance between the first bearing housing (30) and the external support (es) can be increased beyond the preset distance (second distance) to be spaced apart by a third distance. The third distance can be maintained constant by the operation of the pressure drive unit (41).

[0275] The above-described first bearing housing (30) represents the bearing housing (30) of the (1)th rolling roller assembly, the second bearing housing (30) represents the bearing housing (30) of the (2)th rolling roller assembly, and the third bearing housing (30) represents the bearing housing (30) of the (3)th rolling roller assembly.

[0276] The external support member (es) is positioned and connected to the adjustment drive member (52) of the gap adjustment member (50), the pressure drive member (41) of the external pressure member (40), or one side of the outermost bearing housing (30).

[0277] The external support (es) restricts the movement of the gap adjustment part (50), the external pressure part (40), or the outermost bearing housing (30).

[0278] Specifically, the external support member (es) can adjust the distance between adjacent bearing housings (30) by pressing (or supporting) the gap adjustment member (50), the external pressure member (40), or the outermost bearing housing (30), and can maintain a constant distance between adjacent bearing housings (30).

[0279] The external support(es) may be, for example, a support surface, a support body, or a wall surface. The support surface, support body, or wall surface may be provided in a system in which the rolling device of the present invention is placed.

[0280] As illustrated in FIGS. 11 and 12, the external support member (es) can support the gap adjustment member (50) or the external pressure member (40) from the side of the gap adjustment member (50) or the external pressure member (40). In this state, the distance between each bearing housing (30) can be adjusted by the operation of the gap adjustment member (50) or the external pressure member (40) connected to one side of each bearing housing (30), and the distance can be maintained (fixed) at a constant level.

[0281] As described above, the rolling roller assembly of the present invention can be moved by the gap adjustment part (50) and / or the external pressure part (40).

[0282] As the gap adjustment unit (50) and / or external pressure unit (40) move the bearing housing (30), the rolling roller (10) connected to the bearing housing (30) also moves. The movement of the bearing housing (30) may be in one direction or in the opposite direction of said one direction.

[0283] The rolling device of the present invention may include a linear motion guide (not shown). The linear guide enables the rolling roller assembly to move smoothly. Since linear guides are well known, they will be briefly described below.

[0284] A linear guide includes a guide body and a guide rail. The guide body may also be referred to as a 'guide block'.

[0285] The guide body can move along the guide rail.

[0286] Specifically, the guide body is movably connected to one side of the guide rail. Accordingly, the bearing housing (30) combined with the guide body can also move.

[0287] The guide body corresponds to the body of the guide body and can be formed in a block shape.

[0288] There may be multiple guide bodies, and they can be placed on a single guide rail.

[0289] The guide body can be joined to the upper surface (315) and / or lower surface (316) of the bearing housing (30) (specifically, the housing body (31)). The joining can be achieved by a fastening member such as a screw.

[0290] The guide rail is combined with the system in which the rolling device of the present invention is positioned.

[0291] Specifically, the other side of the guide rail is coupled to one side of the system in which the rolling device of the present invention is positioned.

[0292] The guide rail is formed in the shape of a rod with a preset length.

[0293] The guide rail can be positioned on the upper surface (315) and / or lower surface (316) of the bearing housing (30) (specifically, the housing body (31)).

[0294] One or more guide rails may be placed on the upper surface (315) and / or lower surface (316) of the bearing housing (30).

[0295] The longitudinal direction of the guide rail is arranged in a direction perpendicular to the longitudinal direction of the roller body (11) and horizontally.

[0296] Figure 8 shows the force relationship between the bearing housing (30) connected to the adjacent rolling rollers (10).

[0297] Forces f1 and f4 are forces that the adjustment push part (52) or the pressure member (322) of the gap adjustment part (50) applies to the pressure bearing (second bearing), forces f2 and f3 are reaction forces that the inner surface of the first bearing housing (30) applies to the non-pressure bearing, and forces f5 and f6 are reaction forces to force f1 and / or forces that the gap adjustment part (50) applies to the second bearing housing (30).

[0298] FIGS. 11 and 12 illustrate the process of transmitting a pressure applied by a gap adjustment unit (50) or an external pressure unit (40) for adjusting the distance between rolling rollers (10). Specifically, FIGS. 11 and 12 illustrate the force relationship between a plurality of bearing housings (30).

[0299] In the rolling device of the present invention, bearing gap adjustment (control) is achieved by the adjustment push part (52) and / or the pressing member (322) of the gap adjustment part (50) pressing some of the bearings (20) disposed in the bearing housing (30).

[0300] And, in the rolling device of the present invention, the distance adjustment (control) between a plurality of rolling roller assemblies is performed by a spacing adjustment unit (50), an external pressure unit (40) and / or an external support unit (es).

[0301] Referring to FIGS. 11 and 12, the pressure f11 applied to the third bearing housing (30) by the adjustment push unit (52) (FIG. 11) or the pressure push unit (42) (FIG. 12) is transmitted to the third bearing housing (30) as forces f12 and f13, and the forces f12 and f13 are transmitted to the third gap adjustment unit (50) as force f14. Then, the force f14 is transmitted to the second bearing housing (30) as forces f15 and f16, and the forces f15 and f16 are transmitted to the second gap adjustment unit (50) as force f17. Then, the force f17 is transmitted to the first bearing housing (30) as forces f18 and f19, and the forces f18 and f19 are transmitted to the first gap adjustment unit (50) as force f20.

[0302] In addition, the resultant force f29, which is the sum of the 'reaction force to the above force f20' and / or the 'force applied by the first gap adjustment unit (50) to the pressure bearing (20) of the first bearing housing (30)', is transmitted to the non-pressure bearing (20) of the first bearing housing (30) as forces f27 and f28. Then, the resultant force f26, which is the sum of the above forces f27 and f28 and / or the 'force applied by the second gap adjustment unit (50) to the pressure bearing (20) of the second bearing housing (30)', is transmitted to the non-pressure bearing (20) of the second bearing housing (30) as forces f24 and f25. And, the resultant force f23, which is the sum of ‘the above forces f24, f25’ and / or ‘the force applied by the third gap adjustment unit (50) to the pressure bearing (20) of the third bearing housing (30)’, is transmitted as forces f21, f22 to the non-pressure bearing (20) of the third bearing housing (30).

[0303] The aforementioned process of force transmission can be applied in the opposite way to the above, starting with force 29.

[0304] Due to the aforementioned forces, the roller shafts (12) coupled to each of the first bearing housing (30) to the third bearing housing (30) are fixed, and the change in distance between the first bearing housing (30) to the third bearing housing (30) is non-existent or minimized.

[0305] According to another embodiment (not shown) of the present invention, some of the gap adjustment parts (50) provided in the rolling device of the present invention may not be composed of an adjustment drive part (51) and an adjustment push part (52), but may be formed in a rod shape or block shape of a preset length. One side of these may press some of the plurality of bearings (20) accommodated in a bearing housing (30), and the other side of these may be connected to another bearing housing (30).

[0306] Thus, the rolling device of the present invention is characterized by controlling the bearing gap of the bearing (20) and simultaneously controlling the distance between the rolling rollers (10) by the force applied by the external pressure unit (40) and / or the gap adjustment unit (50).

[0307] The rolling device of the present invention eliminates or minimizes the change in distance between rolling rollers (10) caused by bearing gaps during material rolling.

[0308] In addition, the rolling device of the present invention is provided with a bearing housing (30) that accommodates three or more bearings (20), and prevents the roller shaft (12) from moving and the roller shaft (12) from being deformed by the force applied to the roller shaft (12) by the bearings (20).

[0309] Additionally, the rolling device of the present invention is provided with a gap adjustment unit (50) and / or an external pressure unit (40), and the gap adjustment unit (50) and / or the external pressure unit (40) pressurizes some of the plurality of bearings (20) housed in the bearing housing (30), thereby eliminating or minimizing the bearing gap of the bearings (20) supporting the roller shaft (12).

[0310] Additionally, the rolling device of the present invention is equipped with a gap adjustment part (50), an external pressure part (40), and / or an external support part (es) to eliminate or minimize changes in distance between rolling rollers (10) during material rolling.

Claims

1. A plurality of rolling roller assemblies, each comprising a rolling roller and a bearing housing; and It includes a spacing adjustment member disposed between adjacent rolling roller assemblies among the plurality of rolling roller assemblies mentioned above, The above-mentioned gap adjustment unit includes an adjustment driving unit and an adjustment push unit, and The housing body of the bearing housing above accommodates a plurality of bearings coupled to the roller shaft, on which the roller shaft of the rolling roller is positioned. The above adjustment push part is positioned in the pressure member hole of the housing body and moves by the adjustment drive part to press some of the plurality of bearings, and The plurality of bearings above include a pressure bearing that is pressed by the adjustment push part and a non-pressure bearing that is not pressed by the adjustment push part, and A rolling device in which the movement of the roller shaft is restricted by the pressure force of the above-mentioned adjusting push part pressing the above-mentioned pressure bearing and the reaction force of the inner surface of the housing body applying to the above-mentioned non-pressure bearing.

2. In Paragraph 1, A rolling device comprising a gap adjustment member positioned between a first bearing housing and a second bearing housing of adjacent rolling roller assemblies, and moving either one or both of the first bearing housing and the second bearing housing.

3. In Paragraph 2, The above-mentioned gap adjustment unit includes an adjustment driving unit and an adjustment push unit, and One side of the above adjustment drive unit is connected to the above adjustment push unit, and the other side of the above adjustment drive unit is connected to the above first bearing housing, and A rolling device in which the above-mentioned adjustment push member is disposed in the pressure member hole of the second bearing housing and presses the pressure bearing received in the second bearing housing by the operation of the above-mentioned adjustment drive member.

4. In Paragraph 2, The above-mentioned gap adjustment unit includes an adjustment driving unit, a first adjustment push unit, and a second adjustment push unit, and One side of the above adjustment drive unit is connected to the first adjustment push unit, and the other side of the above adjustment drive unit is connected to the second adjustment push unit. The first adjustment push unit is connected to the first bearing housing, and presses the first bearing housing by the operation of the adjustment drive unit to move the first bearing housing, and A rolling device wherein the second adjustment push member is disposed in the pressure member hole of the second bearing housing and pressurizes the pressure bearing received in the second bearing housing by the operation of the adjustment drive member.

5. In Paragraph 1, A rolling device comprising a gap adjustment member positioned between the bearing housing of the outermost rolling roller assembly and an external support member among the plurality of rolling roller assemblies, and moving the bearing housing of the outermost rolling roller assembly.

6. In Paragraph 5, The above-mentioned gap adjustment unit includes an adjustment driving unit and an adjustment push unit, and One side of the above adjustment drive unit is connected to the above adjustment push unit, and the other side of the above adjustment drive unit is connected to the above external support unit, and A rolling device comprising a control push member positioned in a pressure member hole of a bearing housing of the outermost rolling roller assembly, and a pressure bearing housed in the bearing housing of the outermost rolling roller assembly, which pressurizes by the operation of the control drive member.

7. In Paragraph 1, It includes an external pressure member connected to the bearing housing of the outermost rolling roller assemblies among the plurality of rolling roller assemblies above, A rolling device in which the above external pressure member is connected to the bearing housing of any one of the outermost rolling roller assemblies or the bearing housing of all of the outermost rolling roller assemblies.

8. In Paragraph 7, The above external pressure unit includes a pressure driving unit and a pressure pushing unit, and One side of the above-mentioned pressure drive unit is connected to the above-mentioned pressure push unit, and the other side of the above-mentioned pressure drive unit is connected to a system or external support unit in which a rolling device is placed. A rolling device in which the above-mentioned pressure pusher is connected to the bearing housing of the outermost rolling roller assembly and presses the bearing housing by the operation of the above-mentioned pressure driveer to move the bearing housing.

9. In Paragraph 1, It includes an external support connected to the bearing housing of the outermost rolling roller assemblies among the plurality of rolling roller assemblies, or the adjustment drive unit or external pressure unit, and The above external support is a support surface or support chain provided in a system in which a rolling device is placed, and a rolling device.

10. In Paragraph 1, A rolling device in which the bearing clearance of the pressure bearing is removed on the side where the pressure of the above-mentioned adjustment push part is applied, and the bearing clearance of the above-mentioned non-pressure bearing is removed on the side where the reaction force from the inner circumference of the housing body is applied, thereby restricting the movement of the above-mentioned roller shaft.

11. In Paragraph 1, The above housing body is, An internal space accommodating the above plurality of bearings; A roller shaft hole communicating with the internal space above and in which the roller shaft is positioned; and A rolling device comprising the pressure member hole communicating with the internal space above.

12. In Paragraph 11, A rolling device in which the roller shaft hole is a hole penetrating one side and the other side of the housing body, and the pressure member hole is a hole penetrating one side or the other side of the housing body.

13. In Paragraph 11, The above housing body includes a guide plate, and The above guide plate is disposed in the pressure member hole and has a guide hole communicating with the pressure member hole, A rolling device in which the adjustment push member or pressure member is disposed in the guide hole.

14. In Paragraph 11, A pressure member is disposed in the pressure member hole of the housing body, and A rolling device in which, when the above-mentioned adjusting push part presses the above-mentioned pressing member, the above-mentioned pressing member moves to press some of the above-mentioned bearings.

15. In Paragraph 1, The above plurality of bearings include a first bearing, a second bearing, and a third bearing, and The first bearing is positioned near the roller body of the rolling roller, the second bearing is positioned between the first bearing and the third bearing, and the third bearing is positioned far from the roller body. A rolling device in which each of the first bearing, the second bearing, and the third bearing comprises one bearing or two or more bearings.

16. In Paragraph 15, The above pressure bearing is the rolling device, which is the above second bearing.

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