WO2015076316A1

WO2015076316A1 - Rod-shaped steel material guiding method and guiding device

Info

Publication number: WO2015076316A1
Application number: PCT/JP2014/080699
Authority: WO
Inventors: 中村　吉孝; 宗典石橋; 豊左田野; 貞夫吉澤
Original assignee: 新日鐵住金ステンレス株式会社; 寿産業株式会社
Priority date: 2013-11-19
Filing date: 2014-11-12
Publication date: 2015-05-28
Also published as: JP2015098043A; KR20160015369A; KR101800215B1; JP6190700B2; EP3028783B1; EP3028783A4; EP3028783A1

Abstract

The purpose of the invention is to improve the quality of a rod-shaped steel material by preventing the generation of scratches on the rod-shaped steel material, and to obtain a stable ring shape. First to third guides (G1, G2, G3) are disposed to guide the rod-shaped steel material from pinch rolls (P) to a laying head (H). The first guide (G1), on the most upstream side, is provided with a plurality of bending and shaping roller guides (G11, G12) which impart a curvature to the rod-shaped steel material, bending it in the direction of the laying head (H). The second guide (G2) is provided with a plurality of directing roller guides (G21, G22) which guide the rod-shaped steel material downstream. The third guide (G3), on the most downstream side, is contiguous with the second guide (G2) and is provided with a plurality of bending-back and shaping roller guides (G31, G32) for bending back the rod-shaped steel material in the direction of the laying head (H), to make it straight.

Description

Method and apparatus for guiding wire steel

The present invention relates to a guiding method and a guiding device for a linear steel material including a steel bar and a wire rod.

When a steel material is hot rolled to produce a linear steel material, for example, in a hot rolling line disclosed in JP 2010-99669 A, a heating furnace, a rough rolling mill, An intermediate rolling mill, a finishing rolling mill, a final finishing rolling mill, and a laying head are sequentially disposed, and a plurality of water cooling devices for cooling the wire are disposed between the finishing rolling mill and the final finishing rolling mill.
Although not disclosed in the above publication, generally, a pinch roll stand and a guiding means for guiding the wire to the laying head are disposed between the final finish rolling mill and the laying head.
The laying head is installed at a certain angle with respect to the pinch roll stand, and when guiding a thin wire rod from the pinch roll side to the laying head at a high speed, a pipe guide (guide pipe) is used as the guiding means. ) Is used. The pipe guide is disposed between the pinch roll stand and the laying head, and has a curved shape.

JP 2010-99669 A

At the time of guiding the wire rod, the above-mentioned small diameter wire rod that has come out of the pinch roll, when guided to the laying head by the pipe guide, causes oysters when touching the inner surface of the pipe guide, The contact causes unevenness in the speed of the wire, and there is a problem that a good ring cannot be formed by the laying head. In other words, it is impossible to obtain a stable ring formation due to the unevenness of the oyster cake and the wire speed, and these have finally become problems to be solved from the viewpoint of the quality and operation of the wire. .
An object of the present invention is to prevent the occurrence of oysters in a linear steel material, improve the quality, and obtain a stable ring shape.

The first feature of the present invention is that the pinch roll on the downstream side of the final finish rolling mill in the hot rolling line and the downstream side of the pinch roll are spaced apart and shifted downward from the opposing position of the pinch roll. There exists in the induction | guidance | derivation method for guide | inducing a linear steel material between the laying head arrange | positioned in a position. The linear steel material is bent in the direction of the laying head while being guided to the downstream side by a plurality of rollers of a roller guide for bending forming, and the linear steel material that has been bent is formed into a roller guide for bending back forming on the downstream side. The plurality of rollers are guided to the laying head while being bent back in the laying head direction.
The second feature of the present invention is that the bending guide and the bending return guide for guiding the linear steel material between the pinch roll and the laying head on the downstream side of the final finishing mill in the hot rolling line. Is in a linear steel material guiding device. The bending guide and the bending return guide are attached to support means. The laying head is disposed at a position that is spaced downstream from the pinch roll and is shifted downward from the opposed position of the pinch roll. The guide guide for bending on the upstream side guides the linear steel material to the downstream side by a plurality of rollers, and also provides a bending roller guide for bending the linear steel material in the direction of the laying head. There are multiple. The guide guide for bending return is used to guide the linear steel material bent by the bending guide guide on the upstream side back to the laying head direction by a plurality of rollers, and to guide the laying head. A plurality of roller guides for bending back molding are provided. Each roller in each of the above-described bending guide roller guide and each bending back forming roller guide is rotatably attached to a roller pin via a bearing portion.
According to a third aspect of the present invention, the intermediate guide is provided between the bending guide and the return guide, and the intermediate guide is a linear steel material. Is provided with a plurality of guide roller guides for guiding the guide along a downward inclined direction by a plurality of rollers to guide the guide to the bending return guide.
The fourth feature of the present invention is that the second or third feature is provided, and a roller guide of each guide guide is provided with a center guide.
A fifth feature of the present invention is any one of the second to fourth features described above, wherein each guide guide is composed of at least two roller guides, and each roller guide is a combination of at least three rollers. It is in what is.
The sixth feature of the present invention includes any one of the second to fourth features and the fifth feature, and the combination of the three rollers is either the upper side or the lower side. It consists of two rollers arranged on one side and one roller arranged on the other side, and the combination of three adjacent rollers in the roller guide for bi-bending molding is reversed to each other The combination of the three adjacent rollers in the roller guides for both bending back moldings is in a positional relationship that is reversed with respect to each other.
A seventh feature of the present invention includes any one of the second to sixth features described above, and each roller guide in the guide guide includes a roller eccentricity adjusting mechanism for adjusting the position of the roller. There is to be.
The eighth feature of the present invention includes any one of the second to seventh features described above, and each roller guide in the guide guide is attached to the substrate as the support means so as to be replaceable alone. It is in.
A ninth feature of the present invention is that any one of the second to eighth features is provided, and all the roller guides of all the guides have the same configuration.
A tenth feature of the present invention is that any one of the second to ninth features is provided, and a member having a small friction coefficient is used for the bearing of the bearing portion.
The eleventh feature of the present invention is that any one of the second to tenth features is provided, and a resin seal is disposed on the bearing portion.

According to the present invention, the bending guide roller guide is provided as the bending guide, and the bending guide roller guide is provided as the bending return guide. This can smooth the induction of the linear steel material to the laying head, prevent the occurrence of oysters in the pipe guide that has been used in the past, improve the quality, and contact the quill pipe inside the laying head. This can be avoided and a stable ring can be formed.

FIG. 1 is a front view showing a linear steel material guiding device according to the present invention, in which a part of a base plate is cut away.
FIG. 2 is an enlarged front view showing a first bending guide roller guide in the first guiding guide of the linear steel material guiding device according to the present invention.
FIG. 3 is an enlarged side view showing a first bending guide roller guide in the first guiding guide of the linear steel material guiding device according to the present invention.
FIG. 4 is an enlarged plan view showing a first bending guide roller guide in the first guiding guide of the linear steel material guiding device according to the present invention.
FIG. 5 is an enlarged cross-sectional view showing a state where the first bending guide roller guide is mounted in the first guiding guide of the linear steel material guiding device according to the present invention.
FIG. 6 is an enlarged cross-sectional view showing the relationship between each roller of the first bending guide roller guide and the center guide in the first guiding guide of the linear steel material guiding device according to the present invention.
FIG. 7 is a configuration diagram for explaining the mutual action of each roller in the first, second, and third guides in the linear steel material guide device according to the present invention.
FIG. 8 is an enlarged side view showing a pinch roll outlet guide in the linear steel material guiding device according to the present invention.

A linear steel material induction device according to the present invention will be described with reference to the drawings.
In order to guide the linear steel material between the pinch roll P and the laying head H arranged on the downstream side of the final finish rolling mill in the hot rolling line, the linear steel material induction device shown in FIG. A first guide guide G1 that is a bending guide guide, a second guide guide G2 that is an intermediate guide guide, and a third guide guide G3 that is a return guide guide.
In FIG. 1, the laying head H on the most downstream side (right side in the figure) is arranged at a position that is spaced downstream from the pinch roll P and spaced downward from the pinch roll P. That is, the laying head H is arranged in the downward inclined direction with a space from the pinch roll P to the downstream side.
Between the pinch roll P and the laying head H, a substantially “H” shaped substrate 1 is arranged. A base plate 1a having the same shape is stacked on the front surface of the substrate 1, and first, second and third guides G1, G2 and G3 are detachably attached to the base plate.
The first guide G1 will be described with reference to FIGS.
In FIG. 1, the upstream first guide guide G1 includes a plurality of bending guide roller guides (in the illustrated example, two bending guide roller guides G11 and G12). The first and second roller guides for bending G11 and G12 guide the linear steel material toward the laying head H direction, and the linear steel material is directed to the laying head H direction in FIG. It has the function of bending in the lateral direction.
The first bending guide roller guide G11 out of the first and second bending guide roller guides G11 and G12 will be described.
2 to 4, the first bend forming roller guide G11 includes a guide unit 2. The guide unit 2 is detachably attached to the base plate 1a by mounting bolts 3, and this base plate is fixed to the front surface of the substrate by fixing bolts 4 (FIG. 1). The first bending roller guide G11 can be replaced with a new one by itself with respect to the substrate 1 through the guide unit 2.
A plurality of

rollers

5, 6, 7 are provided in the guide unit 2. In the example of the guide unit 2 shown in FIG. 2, two

rollers

5 and 6 are provided on the upper side and one roller 7 is provided on the lower side, and a line connecting the centers of the rollers forms an inverted triangle. . The

rollers

5, 6, and 7 apply a bending force that draws a gentle arc in the direction of the laying head H to the linear steel material and guide it toward the downstream side (right side in FIG. 1).
3 to 5, the

rollers

5, 6, and 7 are rotatably attached to the roller pins 8 via bearings 9. A member having a small friction coefficient (such as ceramics) is used for the bearing 9a of the bearing portion 9 so that heat generation can be suppressed against rotation of the roller corresponding to the traveling speed of the linear steel material. In the bearing 9a shown in FIG.3 and FIG.5, the ball bearing which has arrange | positioned the ball | bowl 9b in the inside is used. According to the example shown in FIG. 5, a resin seal 9 c is disposed at both ends of the roller 6 in the bearing portion 9 to prevent the deposits such as scale from entering the inside, and the roller rotating at high speed. The heat generation can be suppressed. Similarly, resin seals are also arranged for the bearing portions of the other rollers 5 and 7 (only the bearing portion 9 of the roller 7 is shown in FIG. 3).
In FIG. 5, 9d is a washer and 9e is a spacer.
2 to 5, a gear wheel 10 that is rotatably attached to the upper plate portion of the guide unit 2 is integrally coupled to the upper portion of each roller pin 8. Each roller pin 8 is eccentrically coupled to the gear wheel 10. Further, the lower end portion of each roller pin 8 is supported by an eccentric piece 11 that is rotatably attached to the lower plate portion of the guide unit 2. Each roller pin 8 is eccentrically connected to the eccentric piece 11.
2, 4, and 6, a center guide 17 is provided in the guide unit 2 of the first bending roller guide G11. The center guide 17 is fixed to the guide unit 2 by a center guide fixing bolt 18, and a distal end portion (left end portion in FIG. 6) protrudes from the guide unit. The center guide 17 guides the linear steel material between the

upper rollers

5 and 6 and the lower roller 7 in FIG. 6. Then, the linear steel material is squeezed by the

rollers

5, 6 and 7 and bent in the direction of the laying head H until it enters from the inlet 17a of the center guide 17 shown in FIG.
The thin linear steel material that travels at high speed tends to swing up and down or left and right during traveling. Therefore, the center guide 17 urges the linear steel material that passes through the guide unit 2 to go straight, and the

rollers

5, 6, and 7 It has a role to ensure guidance and reduction by.
The first bending guide roller guide G11 shown in FIGS. 2 to 4 is provided with a roller eccentricity adjusting mechanism 12 for adjusting the positions (rolling positions) of the

rollers

5, 6, and 7, respectively.
Each eccentricity adjusting mechanism 12 includes a gear wheel 10, an eccentric piece 11, a pinion shaft 13 and a pinion 14. Each pinion shaft 13 is rotatably supported by the pedestal 15. Each pedestal 15 is fixed on the guide unit 2 by mounting bolts 16. Each pinion 14 is attached to the pinion shaft 13 and meshes with the gear wheel 10.
By rotating each pinion shaft 13, each pinion 14 rotates, and each gear wheel 10 rotates as each pinion rotates, so each roller pin 8 attached to the rotating gear wheel in an eccentric state also rotates. Then, the

rollers

5, 6, and 7 are eccentric (moved), and the reduction position can be adjusted.
1 and 2, the other second bending guide roller guide G12 in the first guide guide G1 is downstream of the first bending guide roller guide G11 (on the right side in FIG. 1). It is arranged adjacent to each other with a gap. The configuration of the second bend forming roller guide G12 is the same as that of the first bend forming roller guide G11. For this reason, the code | symbol which shows each component part of the roller guide G12 for 2nd bending shaping | molding which is common with the roller guide G11 for 1st bending shaping | molding is the code | symbol used at the time of description of the roller guide for 1st bending shaping | molding Is used as it is.
The second bend forming roller guide G12 is different from the first bend forming roller guide G11 in that the second bend forming roller guide G11 as a starting point as shown in FIG. The molding roller guide is attached to the substrate 1 by rotating half a turn (clockwise 180 °). For this reason, the arrangement positions of the respective components of the second bend forming roller guide G12 are reversed from the first bend forming roller guide G11. As a result, the two

rollers

5 and 6 in the second bending roller guide G12 are located on the lower side in FIG. 1 and the one roller 7 is located on the upper side in the figure.
In this way, the first guide guide G1 continuously arranges the first and second bending roller guides G11 and G12 having the same configuration on the substrate 1 (the base plate 1a) in a state of being inverted with respect to each other, In the form of a set of a combination of the upper two

rollers

5 and 6 and the lower one roller 7 and a reversed combination (a combination of the upper one roller 7 and the lower two rollers 5 and 6). Adjacently, a curvature that bends the linear steel material in the direction of the laying head H is created to enable smooth guidance to the laying head.
The second guide G2 will be described with reference to FIG.
The second guide G2 is continuous with the first guide G1 on the downstream side. The second guide G2 includes a plurality of guide roller guides (two guide roller guides G21 and G22 in the illustrated example). The first and second guide roller guides G21 and G22 have a function of guiding the linear steel material along the downward inclined direction and guiding it to the third guide guide G3.
Each configuration of the first and second guide roller guides G21 and G22 is the same as each configuration of the first and second bending roller guides G11 and G12. For this reason, the code | symbol which shows each component part of the roller guides G21 and G22 for the 1st and 2nd guides which is common with the roller guides G11 and G12 for the 1st and 2nd bend forming is the 1st and 2nd The reference numerals used when describing the bending roller guides G11 and G12 are used as they are.
The difference lies in the arrangement positions of the first and second guide roller guides G21 and G22 arranged side by side. That is,
The first and second bending roller guides G11 and G12 installed on the left side of FIG. 1 are in an inverted state, whereas the first and second guiding roller guides G21 and G22 are both. Both of them are different in that the

rollers

5 and 6 are on the upper side and the roller 7 is on the lower side and are not reversed.
In the relationship between the adjacent first guide roller guide G21 and the second bend forming roller guide G12, one of the first guide roller guides (right side in FIG. 1) has the roller 7 below. The roller 7 of the other (left) second bend forming roller guide is positioned on the upper side and is attached to the substrate 1 in an inverted state.
The first and second guide roller guides G21 and G22 can guide the linear steel material passing through the center guide 17 by the

upper rollers

5 and 6 and the lower roller 7, respectively.
In the roller eccentricity adjusting mechanism 12 in the first and second guide roller guides G21 and G22 shown in FIG. 1, the guide positions of the

rollers

5, 6, and 7 can be adjusted by the eccentric operation. .
The third guide G3 will be described with reference to FIG.
The third guide guide G3 is continuous with the second guide guide G2 on the downstream side thereof, and is a back guide roller guide for bending back the linear steel material and smoothing the guide to the laying head H. A plurality of rollers (two roller guides G31 and G32 for bending back forming in the illustrated example) are provided.
The roller guides G31 and G32 for the first and second bending back forming were bent in order to guide the linear steel material toward the laying head H and to smoothly guide the laying head to the laying head H. It has a function for bending back the linear steel material guided in a state and forming it linearly. In other words, the first and second bending back forming roller guides G31 and G32 constituting the third guiding guide G3 are linearly guided by the second guiding guide G2 and run in a bent state. The steel material has a function of forming in a straight line in order to avoid direct contact in the direction of the laying head H and contact with the quill pipe Ha that is a guide pipe in the laying head.
The configurations of the first and second bending guide roller guides G31 and G32 are the same as the configurations of the first and second bending guide roller guides G11 and G12. For this reason, the reference numerals indicating the respective components of the first and second bending back roller guides G31 and G32 which are common to the first and second bending roller guides G11 and G12 are the first and second The code | symbol used at the time of description of the roller guide for 2 bending forming is used as it is.
Regarding the arrangement positions of the

rollers

5, 6 and 7, the first bending roller guide G11 is a combination of the upper two

rollers

5, 6 and the lower one roller 7, while the first The roller guide G31 for bending back molding is different in that it is a combination of the upper one roller 7 and the lower two

rollers

5, 6. The second bending roller guide G12 is a combination of the upper one roller 7 and the lower two

rollers

5 and 6, whereas the second bending back roller guide G32 is the upper. It is different in that it is a combination of two

rollers

5 and 6 and a lower one roller 7.
Further, the first and second bending back roller guides G31 and G32 are attached to the base plate 1a at a predetermined angle in the clockwise direction in FIG. 1 with respect to the first bending roller guide G11. This is different from the first bend forming roller guide.
The arrangement of the

rollers

5, 6 and 7 of the first bending back roller guide G31 is such that the

rollers

5, 6 and 7 of the second guiding roller guide G22 adjacent on the upstream side (left side in FIG. 1). The arrangement is in an inverted state.
As shown in FIG. 1, the third guide G3 continuously arranges the first and second roller guides G31 and G32 for bending back in which the combination of the

rollers

5, 6 and 7 is in an inverted state. In addition, in order to prevent the unbent linear steel material guided by the second guide guide G2 from proceeding along its curvature, each set of first and second roller guides for bending back and forth is provided. The roller is bent back to the laying head H, straightened, and smoothly guided to the quill pipe Ha in the laying head H along a straight line.
The mutual action of the six sets of

rollers

5, 6, and 7 in each of the first, second, and third guides G1, G2, and G3 shown in FIG. 1 will be described with reference to FIG.
In FIG. 7, in order to distinguish the individual rollers for each of the six roller combinations, reference numerals 5A1 to 5A6 are denoted for the roller 5 shown in FIG. 1, and numerals 6A1 to 6A6 are denoted for the roller 6. In the roller 7, reference numerals 7A1 to 7A6 are used.
In the first guide G1 of FIG. 7 (i), the first bending roller guide G11 performs the first three-point bending of the linear steel material through the reduction of the three rollers 5A1, 7A1, and 6A1. Then, the three-point bending of the second linear steel material is performed through the reduction by a total of three rollers 7A1, 6A1 and the roller 6A2 of the second bending forming roller guide G12, and then the roller 6A1 and the second bending forming are performed. Three-point bending of the third linear steel material is performed through the reduction by a total of three rollers 6A2 and 7A2 of the roller guide G12 for use, and the rollers 6A2, 7A2 and 5A2 of the roller guide G12 for second bending are further The fourth linear steel material is bent three times through the reduction by the piece.
Therefore, the linear steel material is reversed rollers 5A1, 7A1, 6A1 in the process of being guided downstream by the first bending roller guide G11 and the second bending roller guide G12. And a set of rollers 5A2, 7A2 and 6A2 are applied with a bending force four times to form a gentle arc along the laying head H direction.
7 (ii), the first guide roller guide G21 is provided by rollers 5A3, 7A3, and 6A3, and the second guide roller guide G22 is provided by rollers 5A4, 7A4, and 6A4. Then, the bent steel wire is smoothly guided to the third guide G3.
In the third guide G3 of FIG. 7 (iii), the first three-point bending of the linear steel material is performed through the reduction by the three rollers 6A5, 7A5, and 5A5 of the first bending back forming roller guide G31. Next, the wire steel material is subjected to the second three-point bending of the linear steel material through the reduction by a total of three rollers 7A5 and 5A5 and the roller 5A6 of the second bending back forming roller guide G32, and then the rollers 5A5 and the second Bend-back forming roller guide G32 three-point bending of the linear steel material is performed through a reduction by a total of three rollers 5A6 and 7A6, and roller 5A6 of second bending-back forming roller guide G32 The third linear bending of the linear steel material is performed through the reduction by three pieces of 7A6 and 6A6.
Therefore, the linear steel material is reversed rollers 6A5 and 7A5 in the process of being guided toward the downstream side by the first bending back roller guide G31 and the second bending back roller guide G32. , 5A5 and a set of rollers 5A6, 7A6, 6A6 are applied with a force for bending back four times, and straightening that extends linearly along the laying head H direction is performed.
Thus, in the first and second bending guide roller guides G11 and G12, the rollers 5A1, 6A1, 7A1 and the rollers 5A2, 6A2, 7A2 are arranged downstream, and the combination of the three rollers is continuous. In the second guide roller guides G21 and G22, the rollers 5A3, 6A3 and 7A3 and the rollers 5A4, 6A4 and 7A4 are arranged in the downstream direction, and the combination of the three rollers is continuous, and the first and second bending back moldings are performed. In the roller guides G31 and G32, the roller 5A5, 6A5, 7A5 and the roller 5A6, 6A6, 7A6 are continuous toward the downstream, so the combination of the three rollers is continuous, so that the linear steel material is bent, guided and bent back. Molding can be performed smoothly and reliably.
As shown in FIG. 1, an outlet guide 19 is disposed on the outlet side of the pinch roll P.
The exit guide 19 is for guiding the linear steel material extruded from the pinch roll P to the first bending guide roller guide G11 in the first guide guide G1 located on the most upstream side. .
As shown in FIGS. 1 and 8, the outlet guide 19 includes a guide box 20. The guide box 20 is attached to the base plate 1a by mounting bolts 21. A cylindrical delivery guide 22 is fixed in the guide box 20 by guide fixing bolts 23. The distal end side (left end portion side in FIG. 1) of the delivery guide 22 protrudes from the guide box 20 toward the facing gap of the pinch roll P. The linear steel material that has come out of the pinch roll P is guided to the center guide 17 of the first bending roller guide G11 through the inner hole 22a of the delivery guide 22.
The code | symbol 24 shown in FIG. 8 is a roll cooling water nozzle.
Next, the induction | guidance | derivation method of the linear steel material of this invention is demonstrated.
As shown in FIG. 1, in the hot rolling process, the linear steel material that has passed through the final finish rolling mill is eventually guided to the pinch roll P and is pushed out of the pinch roll to be the first induction guide G1 on the most upstream side. The first and second bending roller guides G11 and G12 of this series are advanced, where a bending force is applied by the

rollers

5, 6 and 7, and a gradual downward curve in the direction of the laying head H is sequentially applied. It is guided while drawing, and then proceeds to a series of first and second guide roller guides G21, G22 of the second guide guide G2, where it is guided by the roller along a downwardly inclined direction, Further, the process proceeds to the two first and second bending back roller guides G31 and G32 of the third guide guide G3, where the linear steel material is gradually bent by the rollers. And is returned to the original state becomes linear, is finally guided to laying head H, it is formed in a ring shape by laying head release.
The operation of the roller eccentricity adjusting mechanism 12 shown in FIGS. 1 and 2 will be described. First and second bending roller guides G11 and G12, and first and second guiding roller guides G21 and G22. In the first and second roller guides G31 and G32 for bending back, when all or any of the pinion shafts 13 is rotated, the gear wheel 10 is rotated via the pinion 14, and the roller pin 8 that rotates simultaneously. Since all or any of the

rollers

5, 6 and 7 corresponding to the roller pins through the shaft rotates eccentrically, the positions of the rollers (the roller guides G11 and G12 for each bending and the roller guides for each bending and forming) G31 and G32 are adjusted in the reduced position, and the first and second guide roller guides G21 and G22 are adjusted in the guide position). Is, it is possible to optimum molding and induction.
According to the present invention shown in the figure, the occurrence of oysters of the linear steel material is prevented by arranging

rollers

5, 6, and 7 between the pinch roll P and the laying head H instead of the pipe guide described in the conventional example. The quality can be improved and a stable ring shape can be formed.
In addition, the laying head H has a linear quill pipe Ha inside, but if the inner surface of the quill pipe and the linear steel material come into contact with each other, it causes oysters and the contact speed of the linear steel material is increased. Although unevenness may occur and a good ring may not be formed, according to the present invention shown in the figure, it is possible to prevent the occurrence of oyster wrinkles by arranging the

rollers

5, 6, and 7, and The linear steel material that is given a curvature on the head side (downward side) travels along the curvature, so that contact occurs inside the quill pipe Ha, causing a problem in ring formation, but the linear steel material that is given a curvature. Straightens (bends back), avoids contact inside the quill pipe, and also helps prevent lashing at the end of the wire steel It is possible to form a ring.
In the example shown in FIGS. 1 and 2, the base plate 1 as a part of the substrate 1 is overlapped on the upper surface thereof, but it is not always necessary to use the base plate.
In the example shown in FIG. 1, each of the first, second and third guides G1, G2, G3 is composed of two roller guides G11, G12, G21, G22, G31, G32. Alternatively, any of the guides may be composed of three or more roller guides. The roller guides G11, G12, G21, G22, G31, and G32 in the first, second, and third guides G1, G2, and G3 are each detachable from the substrate 1 as a single unit. Although it can be replaced by a single unit, there is an advantage that it is easy to mount and maintain, but it is not necessarily an essential requirement to attach and detach a single unit. The roller guides G11, G12, G21, G22, G31, and G32 can be installed by reversal rotation and can be freely selected. However, the arrangement is not necessarily limited to this example. Further, in the example shown in the figure, since all the roller guides G11, G12, G21, G22, G31, and G32 have the same structure, the manufacturing cost can be reduced and the base plate 1a can be reduced. If the installation position of each roller guide is set in advance, any roller guide can be used as it is, so there is an advantage that the workability of installation / removal and maintenance work are simplified, but all have the same structure. It is not necessary to. Each pair of rollers in the two roller guides G11 and G12 is arranged in an inverted state, and similarly, each pair of rollers in the two roller guides G31 and G32 is also arranged in an inverted state. In the latter case, it is possible to perform bending forming four times, and in the latter case, four bending return forming operations, so that the linear steel material can be formed smoothly and reliably, and smooth guidance to the laying head H is achieved. It becomes possible.
In the two series of roller guides G21 and G22 shown in FIG. 1, the two adjacent sets of rollers are arranged side by side without being reversed, and the guidance is made smooth. You may make it arrange | position in a mutually inverted state like each set of rollers in G12.
In the bearing 9a and the seal 9c of the bearing portion 9, an example using a member having a small friction coefficient is shown. However, the member is selectively used according to the speed of the linear steel material, and the above example is not necessarily used. It is not limited.
In the example shown in FIG. 1, the first, second, and third guides G1, G2, and G3 are arranged to facilitate the induction and forming of the linear steel material. The second guide G2 may not be arranged. When the second guide guide G2 is not disposed, the first guide guide G1 is guided to the third head guide G3 as it is after bending the linear steel material, and then bent back to guide it to the laying head H. To do. In this case, in the example shown in FIG. 1, the rolling down positions of the

rollers

5, 6, 7 by the roller eccentricity adjusting mechanism 12 of the first guide roller guide G 21 of the second guide guide G 2. Or a method of adjusting the distance or inclination of the first guide roller guide G21 of the second guide guide with respect to the second bending guide roller guide G12 of the first guide guide G1. It corresponds by. Also for the other second guide roller guide G22, a method of changing the reduction position of each of the

rollers

5, 6, and 7 by the roller eccentricity adjusting mechanism 12, or the first bending of the third guide guide G3 is performed. It corresponds by the method of adjusting the distance and inclination of the 2nd guide roller guide G22 of the 2nd guide guide G2 with respect to the roller guide G31 for reverse molding.
In the illustrated example, each roller guide G11, G12, G21, G22, G31, G32 is provided with a roller eccentricity adjusting mechanism 12, and the rolling down position or guide position of each

roller

5, 6, 7 is arbitrarily changed. Although the optimum forming and guiding of the linear steel material can be performed, it is not always necessary to provide a roller eccentricity adjusting mechanism.
In the example shown in FIG. 1, first and second bending roller guides G <b> 11 and G <b> 12, first and second guiding roller guides G <b> 21 and G <b> 22 and first and second bending back rollers. In order to facilitate the positioning of the guides G31 and G32, the base plate 1a is provided with a convex or concave positioning portion 1a1 in the width direction (the vertical direction in the figure), but these are provided as necessary.

G1 First guide (bending guide)
G11 Roller guide for first bending (roller guide)
G12 Roller guide for second bending (roller guide)
G2 Second guide (intermediate guide)
G21 Roller guide for first guide (roller guide)
G22 Second guide roller guide (roller guide)
G3 Third guide (bend back guide)
G31 Roller guide for first bending back forming (roller guide)
G32 Roller guide for second bending back forming (roller guide)
H laying head P Pinch roll 1 Substrate (supporting means)
2

Guide unit

5, 6, 7 Roller 8 Roller pin 9 Bearing part 9a Bearing 9c Seal 10 Gear wheel 12 Roller eccentricity adjustment mechanism 13 Pinion shaft 14 Pinion 15 Pedestal 17 Center guide

Claims

A pinch roll on the downstream side of the final finish rolling mill in the hot rolling line, and a lay head arranged at a position spaced downstream from the opposing position of the pinch roll and spaced downstream of the pinch roll. Is a guiding method for guiding the linear steel material between
The linear steel material is bent in the direction of the laying head while being guided to the downstream side by a plurality of rollers of a roller guide for bending forming, and the linear steel material that has been bent is formed into a roller guide for bending back forming on the downstream side. A method for guiding a linear steel material, wherein the guide is guided to the laying head while being bent back in the laying head direction by a plurality of rollers.
A bending induction guide and a bending induction guide for guiding the linear steel material are arranged between the pinch roll and the laying head on the downstream side of the final finish rolling mill in the hot rolling line,
The bending guide and the bending return guide are attached to support means,
The laying head is disposed at a position that is spaced downstream from the pinch roll and shifted downward from the opposed position of the pinch roll.
The guide guide for bending on the upstream side guides the linear steel material to the downstream side by a plurality of rollers, and also provides a bending roller guide for bending the linear steel material in the direction of the laying head. With multiple
The guide guide for bending return is used to guide the linear steel material bent by the bending guide guide on the upstream side back to the laying head direction by a plurality of rollers, and to guide the laying head. Equipped with multiple roller guides for bending back molding
Each of the rollers in the above-described bending guide roller guides and each of the bending back forming roller guides is rotatably attached to a roller pin via a bearing portion.
An intermediate guide guide is disposed between the bending guide guide and the bending return guide guide, and the intermediate guide guide guides the linear steel material along a downwardly inclined direction by a plurality of rollers, thereby guiding the bending return guide. 3. The linear steel material guiding apparatus according to claim 2, comprising a plurality of guide roller guides for guiding the guide.
4. A linear steel material guiding apparatus according to claim 2, wherein a center guide is provided on a roller guide of each guiding guide.
Each linear guide is composed of at least two roller guides, and each roller guide is a combination of at least three rollers. Steel induction device.
Each guide guide is composed of at least two roller guides, and each roller guide is a combination of at least three rollers, and the combination of the three rollers is arranged on either the upper side or the lower side. The two adjacent rollers in the roller guide for bi-bending molding are in an inverted relationship with each other. The linear steel material according to any one of claims 2 to 4, wherein a combination of three adjacent rollers in the two-bending roller guides is in an inverted positional relationship with each other. Guidance device.
Each linear guide in a guidance guide is provided with the eccentricity adjustment mechanism of the roller for adjusting the position of a roller, The guidance apparatus of the linear steel materials in any one of Claim 2 thru | or 6 characterized by the above-mentioned. .
The guide apparatus for a linear steel material according to any one of claims 2 to 7, wherein each roller guide in the guide guide is attached to a substrate as a support means so as to be replaceable as a single unit.
The linear steel material guiding device according to any one of claims 2 to 8, wherein each roller guide of all the guiding guides has the same configuration.
10. The linear steel material guiding apparatus according to claim 2, wherein a member having a small friction coefficient is used for the bearing of the bearing portion.
11. The linear steel material guiding apparatus according to claim 2, wherein a resin seal is disposed on the bearing portion.