Rolling guide device

Abstract

The invention realizes miniaturization of a rolling guide device and adjusts the opening and holding force of a guide roller respectively. In a support unit (20) of a rolling guide device (10), a coupling component (23) is threadedly coupled to a roller bracket with a rotation direction centered on a rotation support shaft (13) at the other end side of a roller bracket (14) as an axis, so that the position of the support unit relative to the roller bracket in the rotation direction can be adjusted; a buffer portion (26) can slide in the rotation direction relative to the coupling component; a second elastic component exists between the coupling component and the buffer portion in a manner that the direction of action of the elastic force of the second elastic component (27) is substantially consistent with the sliding direction of the buffer portion; and a holding component (35) has: a coupling portion (32a) that meshes with the coupling component or the buffer portion to restrict the protrusion of the buffer portion in the sliding direction from the coupling component; and an adjusting thread that adjusts the elastic force of the second elastic component (27) when the coupling portion is meshed with the coupling component or the buffer portion.

Description

Technical Field

[0001] The present invention relates to a rolled piece guiding device, and more particularly to a technology that is effective and suitable for guiding a rolled piece to a rolling mill. Background Art

[0002] In a rolling production line that rolls a rolled piece to form a rod-shaped steel material or a wire, it is necessary to accurately center the rolled piece and feed it into the rolling mill. Therefore, a rolled piece guiding device for guiding (guiding) the rolled piece has been provided on the rolled piece entry side of the rolling mill. Various structures have been proposed and put into practical use in the rolled piece guiding device. For example, in Patent Document 1, a rolled piece guiding device is disclosed that guides the rolled piece to the rolling mill by a plurality of guide rollers radially arranged around the rolling axis. Each guide roller is rotatably mounted on the foot of one side of an angled rod, and the angled rod is rotatably supported by the rotating shaft of the frame body. Moreover, each rod and the adjusting bushing are connected by a connecting rod, and the distance between each guide roller and the rolling axis can be adjusted simultaneously by sliding the adjusting bushing in the direction of the rolling axis and rotating each rod around its own rotation axis.

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: (Japan) Patent No. 3265559 Summary of the invention

[0006] Technical problem to be solved by the invention

[0007] Furthermore, in the rolling guide device of Patent Document 1, an elastic member composed of a coil spring is provided between the connecting rod and the rod. The load on the guide roller can be reduced by the elastic member. Furthermore, the pretension of the elastic member can be changed by a retaining ring, and the degree of load reduction on the guide roller can be adjusted. In addition, the opening between the guide roller and the rolling axis can be adjusted by adjusting the bushing.

[0008] However, the adjustment bushing is a structure that can slide in the rolling axis direction relative to the device body (frame), and the opening adjustment of the guide roller is performed by adjusting the position of the adjustment bushing relative to the device body, so it is necessary to provide an adjustment mechanism on the device body, which makes the device structure larger. In addition, since the opening of multiple guide rollers is adjusted by one adjustment bushing, the opening of each guide roller cannot be adjusted separately.

[0009] An object of the present invention is to provide a technology that can achieve miniaturization of a rolled material guiding device and can separately adjust the opening degree and the holding force of guide rollers.

[0010] Technical solutions for solving technical problems

[0011] In order to achieve the above-mentioned purpose, a rolled piece guiding device of one scheme of the present invention comprises: a guide roller, which contacts the rolled piece passing through the rolling line and guides the rolled piece to the rolling mill; a roller bracket, a middle portion between one end side and the other end side of which is supported by the frame via a rotating support shaft so as to be swingable, and the guide roller is rotatably installed on the one end side; a first elastic component, which is interposed between the above-mentioned roller bracket and the above-mentioned frame and applies a rotational force to the above-mentioned roller bracket in the direction in which the above-mentioned guide roller leaves the above-mentioned rolling line; a bearing surface, which is arranged on the above-mentioned frame and bears the above-mentioned rotational force; a supporting unit, which is arranged on the other end side of the above-mentioned roller bracket and presses the above-mentioned bearing surface by the above-mentioned rotational force; the above-mentioned supporting unit comprises: a coupling component, which is connected to the other end side of the above-mentioned roller bracket; a buffer portion, which has a contact surface that contacts the above-mentioned bearing surface; a second elastic component, which exists between the above-mentioned coupling component and the buffer portion ; a retaining member of the buffer portion, which prevents the above-mentioned buffer portion from escaping from the supporting unit; the above-mentioned combining member is threadedly connected to the above-mentioned roller bracket with the rotation direction of the above-mentioned rotating supporting shaft on the other end side of the above-mentioned roller bracket as the center as the axis, the position of the above-mentioned supporting unit relative to the above-mentioned roller bracket in the rotation direction can be adjusted, the above-mentioned buffer portion can slide in the above-mentioned rotation direction relative to the above-mentioned combining member, the above-mentioned second elastic member exists between the above-mentioned combining member and the above-mentioned buffer portion in a manner that the direction of action of the elastic force of the above-mentioned second elastic member is roughly consistent with the sliding direction of the above-mentioned buffer portion, and the above-mentioned retaining member comprises: a coupling portion, which is engaged with the above-mentioned combining member or the buffer portion to restrict the protrusion amount of the above-mentioned buffer portion from the above-mentioned combining member to the above-mentioned sliding direction; an adjusting thread, which adjusts the elastic force of the above-mentioned second elastic member when the coupling portion is engaged with the above-mentioned combining member.

[0012] Effects of the Invention

[0013] According to one aspect of the present invention, the rolling piece guiding device can be miniaturized, and the opening degree and the holding force of the guide rollers can be adjusted separately. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a diagram showing a schematic configuration of a rolling line including a rolled material guiding device according to an embodiment of the present invention.

[0015] Figure 2 This is a cross-sectional view showing a schematic structure of a rolled material guiding device according to one embodiment of the present invention.

[0016] Figure 3 This is a rear view showing a schematic configuration of a rolled material guiding device according to an embodiment of the present invention.

[0017] Figure 4 Yes Figure 2 An enlarged cross-sectional view of a main part is shown with a portion of the enlarged part.

[0018] Figure 5 yes Figure 4 Exploded sectional view of the support unit.

[0019] Figure 6 It means in Figure 4 FIG. 4 is a diagram showing a state where the support unit is removed from the roller bracket.

[0020] Figure 7 yes Figure 4 Exploded sectional view of the support unit in.

[0021] Figure 8 The drawings are for explaining a method of adjusting the holding force of a rolled material guiding device according to one embodiment of the present invention, wherein (a) shows a state before the holding force is adjusted, and (b) shows a state after the holding force is adjusted.

[0022] Fig. 9 The figures are for explaining a method of adjusting the opening of a rolled material guide device according to one embodiment of the present invention, wherein (a) shows a state after the opening is adjusted, and (b) shows a state in which the rolled material is engaged.

[0023] Fig.10 This is a cross-sectional view showing a schematic structure of a rolled material guiding device according to another embodiment of the present invention. DETAILED DESCRIPTION

[0024] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[0025] In addition, in all the drawings for describing the embodiments of the invention, the same reference numerals are given to components having the same functions, and duplicate descriptions are omitted.

[0026] Furthermore, the drawings are schematic and may differ from the actual situation. Furthermore, the following embodiments are examples of devices and methods for implementing the technical concept of the present invention, and do not limit the structure to the following schemes. That is, various changes can be made to the technical concept of the present invention within the technical scope described in the claims.

[0027] like Figure 1As shown, a rolled piece guiding device 10 according to an embodiment of the present invention is provided on the upstream side (rolled piece entry side) of a rolling mill 2 that rolls a rolled piece 1 into a predetermined shape and size, and guides the rolled piece 1 to the rolling mill 2 along a rolling line 3. It should be noted that the rolled piece guiding device 10 may be provided on the downstream side (rolled piece discharge side) of the rolling mill 2 in order to prevent vibration of the rolled piece 1 after rolling.

[0028] like Figure 2 and Figure 3 As shown, a rolled material guiding device 10 according to one embodiment of the present invention comprises: a frame (device body) 11, which is composed of a substantially cylindrical shell; a guide roller (guide roller) 12, which contacts a rolled material 1 passing through a rolling line 3 and guides the rolled material 1 to a rolling mill 2; and a roller support 14, whose intermediate portion between one end side and the other end side is swingably supported by the frame 11 via a rotating support shaft 13, and the guide roller 12 is rotatably mounted on one end side. In addition, the rolled material guiding device 10 according to one embodiment comprises a support unit 20 that supports the other end side of the roller support 14 on the frame 11.

[0029] A plurality of roller supports 14 are radially arranged with the rolling line 3 as the center, and in this embodiment, for example, three are arranged at intervals of 120 degrees. Moreover, the roller supports 14 are formed in a rod shape with one end side bent toward the rolling line 3. Moreover, for the roller supports 14, between one end side and the rotating support shaft 13, the roller supports 14 are applied with a force in a direction of opening relative to the rolling line 3 by the elastic force of the coil spring 15. That is, the coil spring 15 is sandwiched between the roller supports 14 and the frame 11, and is constituted as a first elastic component that applies a rotational force to the roller supports 14 in a direction in which the guide roller 12 leaves the rolling line 3. With such a configuration, the three roller supports 14 support the outer periphery of the rolled piece 1 from three directions by using the guide roller 12 rotatably arranged at one end side thereof, and guide the rolled piece 1 to the rolling mill 2 along the rolling line 3. The roller supports 14 are preferably arranged at three locations at equal intervals in a concentric circle with the rolling line 3 as the center, and may be arranged at four or more locations as required. Furthermore, as long as all vibration directions are toward the rolling line 3, the arrangement may be other than this angular interval.

[0030] Although not shown in detail, the guide roller 12 is rotatably supported by one end side of the roller holder 14 via a bearing included in the roller holder 14 .

[0031] like Figure 4 and Figure 5As shown, the support unit 20 is provided in the order of a large diameter cylinder 22 and a small diameter cylinder 21 at one end side (the large diameter cylinder 22 is closer to the end side than the small diameter cylinder 21), and is provided with a coupling component 23 connected to the other end side of the roller bracket 14. In addition, the support unit 20 is provided with a buffer shaft 26a, one end side of which can be inserted axially and slidably inside the small diameter cylinder 21, and the other end side is provided with a flange portion 25. At the other end side of the buffer shaft 26a, a pressure metal component 26b is coaxially fixed with the buffer shaft 26a. The buffer portion 26 is constituted by these buffer shafts 26a and pressure metal components 26b. In addition, the support unit 20 is provided with a coil-shaped compression spring 27, which is provided on the outer periphery of the buffer shaft 26a in a state where one end side is supported by contacting with the bottom of the large diameter cylinder 22 and the other end side is supported by contacting with the flange portion 25. That is, the compression spring 27 is a second elastic component existing between the coupling component 23 and the buffer portion 26. Since the compression spring 27 is spirally disposed on the outer circumference of the buffer shaft 26 a , the direction in which the elastic force acts coincides with the sliding direction of the buffer portion 26 .

[0032] like Figure 4 and Figure 5 As shown in the figure, the support unit 20 includes: an external thread portion 31 provided on the outer peripheral surface of the large diameter cylinder portion 22; and a spring nut 35, which has an internal thread portion 33 meshing with the external thread portion 31 of the large diameter cylinder portion 22 provided on the inner peripheral surface of the recess 32, and supports the flange portion 25 of the buffer shaft 26a by the bottom 32a of the recess 32. In addition, the support unit 20 has an elastic force adjustment function for adjusting the elastic force of the compression spring 27 by changing the meshing amount between the external thread portion 31 of the large diameter cylinder portion 22 and the internal thread portion 33 of the spring nut 35. The meshing amount between the external thread portion 31 and the internal thread portion 33 can be changed by rotating either one of the coupling member 23 and the spring nut 35 relative to the other.

[0033] The spring nut 35 has a through hole 34 at the bottom of the recess 32 through which the pressure metal component 26b passes. In addition, the pressure metal component 26b is provided on the other end side of the buffer shaft 26a. The pressure metal component 26b is arranged in a manner that abuts against the receiving surface 11a provided on the frame 11 on the side opposite to the buffer shaft 26a. The surface 37a abutting against the receiving surface 11a is convex. In addition, the pressure metal component 26b is provided with a protrusion 37b on the opposite side to the surface 37a. The protrusion 37b is inserted into the recess 25a provided on the end surface of the other end side of the buffer shaft 26a to fix the pressure metal component 26b to the buffer shaft 26a. The pressure metal component 26b is inserted into the through hole 34 of the spring nut 35, and an O-ring 38 is provided between the through hole 34 and the pressure metal component 26b. The pressure metal component 26b is detachably mounted on the other end side of the buffer shaft 26a. The bottom 32a of the recess 32 of the spring nut 35 engages with the surface of the flange portion 25 of the buffer shaft 26a on the opposite side of the compression spring 27, and acts as a coupling portion 32a that prevents the buffer portion 26 from falling off the support unit 20. That is, the spring nut 35 serves as a retaining component that holds the buffer portion 26 on the support unit 20.

[0034] like Figure 4 , Figure 6 and Figure 7 As shown, the support unit 20 has an external threaded portion 41 provided on the outer periphery of the small diameter cylinder portion 21 of the coupling member 23. On the other end side of the roller bracket 14 (the opposite side to the side supporting the guide roller 12), a through hole 42 is provided, which has the rotation direction of the roller bracket 14 centered on the rotation support shaft 13 at the other end side as the central axis, and an internal threaded portion 43 is provided on the inner peripheral surface of the through hole 42, which is engaged with the external threaded portion 41 of the small diameter cylinder portion 21. That is, the coupling member 23 is threadedly coupled to the roller bracket 14 with the rotation direction centered on the rotation support shaft 13 at the other end side of the roller bracket 14 as the axis. Moreover, the supporting unit 20 is combined with the roller bracket 14 by inserting the small diameter cylindrical portion 21 of the coupling component 23 into the through hole 42 so that the external thread portion 41 meshes with the internal thread portion 43 and rotates. In addition, the threaded connection between the coupling component 23 of the supporting unit 20 and the roller bracket 14 makes relative movement of the supporting unit 20 and the roller bracket 14 possible, thereby exerting a position adjustment function for adjusting the position of the guide roller 12 relative to the rolling line 3.

[0035] In addition, the support unit 20 further includes: a coupling member fixing nut 45, which is penetrated by the other end side of the coupling member 23 and is provided with an internal thread portion 44 meshing with the external thread portion 41 of the small diameter cylinder 21 on the inner circumferential surface; and a nut 47, which is mounted on the coupling member 23, and the internal thread portion of the inner circumferential surface is meshed with the external thread portion 46 provided on the other end side of the coupling member 23 when the internal thread portion 44 of the coupling member fixing nut 45 is meshed with the external thread portion 41 of the small diameter cylinder 21 and the coupling member fixing nut 45 is mounted on the coupling member 23. By tightening the nut 47, the rotation of the coupling member 23 relative to the roller bracket 14 is locked.

[0036] A groove corresponding to the shape of the tip of a +-shaped screwdriver or a --shaped screwdriver is provided on the end surface on the other end side of the coupling member 23 . In this embodiment, for example, a straight-shaped groove is provided.

[0037] Next, refer to Figure 8 and Fig. 9 The following describes the method for adjusting the opening of the guide roller 12 and the holding force in the rolling piece guiding device 10 of this embodiment. Figure 8 , Fig. 9 In the figure, the buffer portion 26 is drawn as a whole with the buffer shaft 26a and the pressure metal member 26b, and the description of the O-ring 38, the coupling member fixing nut 45, and the nut 47 is omitted.

[0038] Figure 8 (a) shows the pre-stage of adjusting the opening and the holding force. At this time, the length Ls of the compression spring 27, that is, the interval Ls between the flange portion 25 of the buffer shaft 26a and the bottom of the large diameter cylinder portion 22 is Ls0, and the distance L between the center of the rotation support shaft 13 and the front end of the buffer portion 26 (the surface on the side of the receiving surface 11a of the pressure metal component 26b) is L0.

[0039] In this state, the spring nut 35 is rotated as indicated by arrow A without rotating the coupling member 23, and the spring nut 35 is relatively moved relative to the coupling member 23. As a result, since the distance Ls between the bottom 32a of the recess 32 of the spring nut 35 and the bottom of the large diameter cylinder 22 of the coupling member 23 changes, the distance between the flange 25 of the buffer shaft 26a in contact with the bottom 32a and the bottom of the large diameter cylinder 22 changes. Thus, since the length of the compression spring 27 is equal to Ls, the length of the compression spring 27 can be adjusted by adjusting Ls, and the elastic force of the compression spring 27 can be adjusted. Therefore, by adjusting the relative position of the spring nut 35 and the coupling member 23, the holding force of the guide roller 12 on the rolled product can be adjusted.

[0040] Figure 8 (b) indicates that the length of the compression spring 27 is Figure 8 If the positions of the spring nut 35 and the coupling member 23 are changed so that the length Ls of the compression spring 27 is shortened, the distance L between the front end of the buffer portion 26 (the surface on the receiving surface 11a side of the pressure metal member 26b) and the rotation support shaft 13 becomes equal to the length Ls0 in the state (a). Figure 8 The roller bracket 14 is usually subjected to a force in a direction of moving the guide roller 12 away from the rolling line 3 by the coil spring 15, and since the force is borne by the bearing surface 11a, the roller bracket 14 rotates around the rotation support shaft 13 in a manner that the contact state between the front end of the buffer portion 26 and the bearing surface 11a is maintained. Figure 8 The roller bracket 14 and the guide roller 12 shown by the dotted line in (b) represent Figure 8 (a) The roller bracket 14 and the guide roller 12 are at the same position. The roller bracket 14 and the guide roller 12 shown in solid lines represent the roller bracket 14 and the guide roller 12 from Figure 8 The roller bracket 14 and the guide roller 12 after starting to rotate in the state (a).

[0041] Next, the opening degree of the guide roller 12 is adjusted. That is, the distance Lp between the pass wire 3 and the peripheral surface of the guide roller 12 is adjusted. Fig. 9 The guide roller 12, roller bracket 14, and support unit 20 shown by the dotted lines in (a) are respectively located at Figure 8 (b) shows the same position. Fig. 9 The groove provided on the end surface of the support unit 20 (left side in (a)) is engaged, and the coupling member 23 of the support unit 20 is rotated as shown by arrow B, so that the coupling member 23 and the roller bracket 14 move relative to each other at their coupling portion, and as a result, the distance Lt from the coupling portion between the roller bracket 14 and the coupling member 23 to the front end of the buffer portion 26 changes. Fig. 9In (a), the distance Lt is Lt1 in the state of the guide roller 12, the roller bracket 14, and the support unit 20 shown by the dotted line. On the other hand, if the coupling member 23 and the roller bracket 14 move relatively at their coupling portion, and the state of the guide roller 12, the roller bracket 14, and the support unit 20 is changed to the state shown by the solid line, it is represented as Lt2 (> Lt1). If the distance Lt changes, since the distance L from the rotating support shaft 13 to the front end of the buffer part 26 changes corresponding to the change, the roller bracket 14 rotates around the rotating support shaft 13, and the distance Lp between the rolling line 3 and the peripheral surface of the guide roller 12 changes. Therefore, by moving the coupling member 23 relative to the roller bracket 14, the opening of the guide roller 12 can be adjusted. It should be noted that when the coupling member 23 is moved relative to the roller bracket 14, the length Ls of the compression spring 27 is not changed by not moving the spring nut 35 and the coupling member 23 relative to each other, thereby keeping the holding force constant.

[0042] It should be noted that the elastic force of the compression spring 27 is a value sufficiently greater than the elastic force of the coil spring 15 in any case within the adjustment range of the elastic force adjustment function. The force compressing the compression spring 27 is the force of the coil spring 15 rotating the roller bracket 14 and the reaction force of the rotation force received by the receiving surface 11a via the buffer portion 26 in the pre-stage (hereinafter referred to as the pre-passing stage) of the rolled product 1 and the contact between the rolled product 1 and the guide roller 12. Since the elastic force of the compression spring 27 is sufficiently greater than the elastic force of the coil spring 15, the flange portion 25 of the buffer shaft 26a is in contact with the bottom 32a of the recess 32 of the spring nut 35 by the elastic force of the compression spring 27 in the pre-passing stage. That is, the length of the buffer portion 26 protruding from the spring nut 35 is the maximum value of the protrusion limit.

[0043] As described above, the initial setting of the rolled material guiding device 10 in the present embodiment is completed. Fig. 9 (b) shows a case where, when the rolled material 1 bites into the guide rollers 12 of the rolled material guide device 10 , the opening of the guide rollers 12 increases in accordance with the outer diameter of the rolled material 1 or the deviation from the pass line 3 . Fig. 9 The guide roller 12 and roller bracket 14 shown by the dotted line in (b) represent the positions in the initial setting state (with Fig. 9 The guide roller 12 and roller bracket 14 shown by the solid line in (a) are in the same position). Fig. 9 The guide roller 12 and roller support 14 shown by the solid line in (b) indicate the position when the opening becomes larger due to the biting of the rolled piece 1. Fig. 9As shown in (b), the opening of the guide roller 12 changes by only ΔLp relative to the initial setting when biting. With the change of the opening, the roller bracket 14 rotates around the rotation support shaft 13, and the coupling member 23 and the spring nut 35 of the support unit 20 rotate together with the roller bracket 14. Therefore, the bottom of the large diameter cylinder 22 of the coupling member 23 moves toward the receiving surface 11a, while the buffer portion 26 is in contact with the receiving surface 11a and cannot move, so the compression spring 27 is compressed. Fig. 9 The length d in (b) is the compressed length of the compression spring 27 that changes with the opening of the roller bracket 14. Since the compression spring 27 generates an elastic force in the direction of reducing the opening of the guide roller 12 on the roller bracket 14 via the coupling member 23, the holding force of the guide roller 12 on the rolled material 1 can be maintained in accordance with the elastic force.

[0044] In the rolled material guiding device 10 of one embodiment, the guide roller 12 contacts the rolled material 1 passing through the rolling line 3, and the rolled material 1 is guided to the rolling mill 2 by the contact of the guide roller 12. When the rolled material 1 contacts the guide roller 12, due to the error of the dimensional accuracy of the rolled material 1, the position deviation of the rolled material 1, etc., one end side of the roller bracket 14 moves in the direction away from the rolling line 3 with the rotation support shaft 13 as the center, and the other end side of the roller bracket 14 presses the large diameter cylinder portion 22 of the coupling member 23 toward the receiving surface 11a of the frame 11. And, due to this pressing force, the compression spring 27 of the support unit 20 expands and contracts, and the other end side of the roller bracket 14 moves toward the receiving surface 11a of the frame 11. That is, the rolled material guiding device 10 of one embodiment can absorb and alleviate the load borne by the guide roller 12 by the compression spring 27 of the support unit 20 when the guide roller 12 contacts the rolled material 1, and can reduce the load on the bearing included in the guide roller 12. Thus, when stress exceeding a certain level is generated, it is possible to suppress defects such as burning in the bearings, and it is also possible to suppress the occurrence of flaws in the rolled material 1 due to poor rotation of the guide rollers 12 .

[0045] Furthermore, the support unit 20 has an elastic force adjustment function for adjusting the elastic force of the compression spring 27 and a position adjustment function for adjusting the position of the guide roller 12 relative to the rolling line 3. Furthermore, the elastic force of the compression spring 27 can be changed by rotating the spring nut 35. On the other hand, the position of the guide roller 12 relative to the rolling line 3 can be changed without changing the elastic force of the compression spring 27 by rotating the coupling member 23. Therefore, the rolled product guiding device 10 of one embodiment can separately adjust the elastic force of the compression spring 27 and the position of the guide roller 12 relative to the rolling line 3. Therefore, there is no need to provide an adjustment mechanism on the frame body, and the device structure does not become larger.

[0046] In addition, even when a plurality of guide rollers 12 are arranged around the rolling line 3, by making each guide roller 12 have a structure like the above-mentioned embodiment, it is possible to adjust the opening of each guide roller 12. Therefore, for example, it is possible to adjust the opening of each guide roller 12 in order to cope with the difference in the degree of wear of the guide roller 12.

[0047] Furthermore, since the pressure metal member 26b is detachably mounted on the end surface of one end of the buffer shaft 26a, the pressure metal member 26b can be easily replaced when it is worn.

[0048] Furthermore, the surface 37a of the pressure metal component 26b that contacts the receiving surface 11a of the frame 11 is convex. Therefore, even if the support unit 20 is slightly inclined relative to the receiving surface 11a of the frame 11, the support unit 20 can be supported by the frame 11. It should be noted that, when the front end of the buffer 26 is worn, the entire buffer 26 can be replaced, and the pressure metal component 26b and the buffer shaft 26a can be integrally formed as the buffer 26.

[0049] Next, other embodiments of the present invention will be described. Fig.10 A rolled material guiding device 110 according to another embodiment of the present invention is shown. Fig.10 The rolling stock guide device 110 shown is relative to Figure 2 to Figure 9 The device shown in FIG. 1 has a different structure of the support unit. Figure 2 to Figure 9 The embodiment shown is the same. Fig.10In the embodiment shown, the coupling component 123 of the support unit 120 is composed of a tubular component 123a and a tubular component 123b. The tubular component 123a has a flange portion 122 at one end. The tubular portion of the tubular component 123a extends over the entire length of the coupling component 123, that is, the tubular component 123a has a through hole that penetrates in the axial direction. An external thread portion 141 exists on a part of the outer periphery of the tubular portion. The tubular component 123a is threadedly coupled to the roller bracket 14 by the external thread portion 141 of the tubular component 123a being engaged with the internal thread portion 43 of the roller bracket 14. Here, the coupling component 123 and the roller bracket 14 are coupled in such a manner that the flange portion 122 becomes the side of the bearing surface 11a. The tubular component 123b is a component having a through hole, and has an internal thread portion that engages with the external thread portion 141 provided on the tubular component 123a on one end side (the side that becomes the side of the bearing surface 11a). Moreover, the cylindrical member 123a is threadedly coupled with the cylindrical member 123b to form an integral coupling member 123. The cylindrical member 123b also has a function of preventing the position deviation of the coupling member 123 relative to the roller bracket 14, and the rotation of the cylindrical member 123a relative to the roller bracket 14 is locked by tightening the cylindrical member 123b so that it contacts the roller bracket 14.

[0050] The buffer shaft 126a is inserted into the through hole of the coupling member 123 so as to be slidable relative to the coupling member 123. The buffer shaft 126a has a flange portion 125 at one end, and is configured in such a manner that the flange portion is located on the receiving surface 11a side. A pressure metal member 126b is fixed to the front end (on the receiving surface 11a side) of the buffer shaft 126a. A surface 137a on the receiving surface 11a side of the pressure metal member 126b is a surface that abuts against the receiving surface 11a, and the surface 137a is convex. The buffer portion 126 is formed by the buffer shaft 126a and the pressure metal member 126b.

[0051] A compression spring 27 (equivalent to the second elastic member in the present invention) is arranged between the flange portion 125 of the buffer shaft 126a and the flange portion 122 of the coupling member 123. The compression spring 27 is a coil-shaped spring provided on the outer periphery of the buffer shaft 126a in a state where one end side is supported by abutting against the flange portion 122 of the coupling member 123 and the other end side is supported by abutting against the flange portion 125 of the buffer shaft 126a.

[0052] The buffer shaft 126a protrudes from the end 123c of the coupling member 123 on the side where the flange 122 does not exist, in a state where both ends of the compression spring 27 are in contact with the flange 125 and the flange 122. In this state, the external threaded portion 131 is provided in a region including a portion radially opposed to the end 123c of the outer periphery of the buffer shaft 126a.

[0053] Fig.10The reference numeral 135 in the figure denotes a spring nut, which is a retaining member 135. The spring nut 135 is arranged to face the end portion 123c of the coupling member 123 (the end portion of the tubular member 123b) in the axial direction, and the internal thread portion 133 of the spring nut 135 meshes with the external thread portion 131 provided on the buffer shaft 126a. The spring nut is inserted into the portion of the buffer shaft 126a protruding from the end portion 123c, and the spring nut 135 contacts the end portion 123c of the coupling member 123, and is further tightened until the compression spring 27 is compressed. By adjusting the tightening amount of the spring nut 135 at this time, the length of the compression spring 27 can be adjusted, thereby adjusting the elastic force of the compression spring 27. The buffer portion 126 receives a force to move toward the receiving surface 11a side due to the elastic force of the compression spring 27, and the end surface of the spring nut 135 on the side opposite to the coupling member 123 meshes with the coupling member to restrict its movement. That is, the end surface 135a of the spring nut 135 on the coupling member 123 side is a joint portion that meshes with the coupling member 123 and restricts the protrusion amount of the buffer portion 126 from the coupling member 123 in the sliding direction. In addition, the internal thread portion 133 becomes an adjustment thread for adjusting the elastic force of the compression spring (second elastic member) 27 when the joint portion 135a is meshed with the coupling member. The nut 47 is a nut for preventing the spring nut 135 from being displaced relative to the buffer shaft 126a. By tightening the nut 47, the rotation of the spring nut 135 relative to the buffer shaft 126a is locked.

[0054] The rolled piece guiding device 110 of this embodiment also has Figure 2 to Figure 9 The rolling piece guiding device 10 shown in FIG. Fig.10 The roller bracket 14, the guide roller 12, the coil spring 15, the rotation support shaft 13, the combination component fixing nut 45 and other components not marked with reference numerals are as follows: Figures 2 to 9 The same as shown, so the description is omitted.

[0055] As mentioned above, although this invention was specifically described based on the said one embodiment, this invention is not limited to the said one embodiment, Various changes can be made within the range which does not deviate from the summary.

[0056] For example, in the above-mentioned embodiment, for the combining component 23 or the combining component 123 and the roller bracket 14, an external threaded portion is provided on the combining component 23 or the combining component 123, and an internal threaded portion engaged with the external threaded portion is provided on the roller bracket 14, and the position of the combining component relative to the roller bracket 14 can be adjusted through the threaded connection between them, or an internal threaded portion can be provided on the combining component, and an external threaded portion engaged with the internal threaded portion can be provided on the roller bracket.

[0057] Furthermore, in the above-mentioned embodiment, the retaining component 35 or the retaining component 135 is used as a spring nut having an internal thread portion serving as an adjustment thread, and an external thread portion engaging with the internal thread portion is provided on the combining component 23 or the combining component 123, so that the elastic force of the second elastic component (compression spring) 27 can be adjusted. Alternatively, the elastic force of the second elastic component (compression spring) 27 can be adjusted by providing an external thread portion on the retaining component 35 or the retaining component 135 and providing an internal thread portion engaging with the external thread portion on the combining component.

[0058] Description of Reference Numerals

[0059] 1Rolled products;

[0060] 2 rolling mill;

[0061] 3 rolling line;

[0062] 10 rolling piece guiding device;

[0063] 11 frame (device body);

[0064] 11a bearing surface;

[0065] 12 guide rollers;

[0066] 13 rotating support shaft;

[0067] 14 roller bracket;

[0068] 15 coil spring (first elastic member);

[0069] 16 through holes;

[0070] 20 support units;

[0071] 21 small diameter cylinder;

[0072] 22 large diameter cylinder;

[0073] 23 combining parts;

[0074] 25 flange portion;

[0075] 26 buffer part;

[0076] 26a buffer shaft;

[0077] 26b Pressure metal parts;

[0078] 27 compression spring (second elastic member);

[0079] 31 external thread portion;

[0080] 32 concavity;

[0081] 32a: joint portion (bottom);

[0082] 33 internal thread portion;

[0083] 34 through holes;

[0084] 35 Spring nut (holding part);

[0085] 37a face;

[0086] 37b protrusion;

[0087] 38O-ring;

[0088] 41 external thread portion;

[0089] 42 through holes;

[0090] 43, 44 internal threaded portion;

[0091] 45 Combination component fixing nut;

[0092] 46 external thread portion;

[0093] 123 combined parts;

[0094] 123a cylindrical member;

[0095] 123b cylindrical member;

[0096] 126 buffer unit;

[0097] 126a buffer shaft;

[0098] 126b Pressure metal parts;

[0099] 135 Spring nut (holding component);

[0100] 135a Joint.

Claims

1. A rolling piece guiding device, characterized in that: have: A guide roller, which contacts a rolled piece passing through the rolling line and guides the rolled piece toward the rolling mill; A roller bracket, wherein a middle portion between one end side and the other end side is swingably supported on the frame via a rotation support shaft, and the guide roller is rotatably mounted on the one end side; a first elastic member, which is interposed between the roller bracket and the frame and applies a rotational force to the roller bracket in a direction in which the guide roller moves away from the rolling line; A bearing surface, which is arranged on the frame and bears the rotational force; A supporting unit, which is arranged at the other end side of the roller bracket and presses the bearing surface through the rotation force; The support unit comprises: a coupling member connected to the other end side of the roller bracket; a buffer portion having a contact surface in contact with the bearing surface; a second elastic member existing between the coupling member and the buffer portion; and a retaining member of the buffer portion, which prevents the buffer portion from coming out of the support unit. The coupling component is threadedly coupled to the roller bracket along an axial direction centered on a through hole provided at the other end of the roller bracket, so that the position of the support unit relative to the roller bracket along the axial direction can be adjusted. The buffer portion is slidable relative to the coupling member in the axial direction. The second elastic member is located between the coupling member and the buffer portion in such a manner that the acting direction of the elastic force of the second elastic member coincides with the sliding direction of the buffer portion. The retaining member comprises: an engaging portion which meshes with the coupling member or the buffering portion to restrict the amount of protrusion of the buffering portion from the coupling member in the sliding direction; and an adjusting thread which adjusts the elastic force of the second elastic member when the engaging portion meshes with the coupling member or the buffering portion.

2. The rolling piece guiding device according to claim 1, The coupling component and the roller bracket are threadedly coupled by an external thread portion provided on the coupling component and an internal thread portion provided on the roller bracket.

3. The rolling piece guiding device according to claim 1 or 2, The coupling member and the holding member are threadedly coupled to each other by means of an external thread portion provided on the coupling member and an internal thread portion provided on the holding member, and the internal thread portion provided on the holding member also serves as the adjustment thread.

4. The rolling piece guiding device according to claim 3, The contact surface of the buffer portion is convex.

Images