JP3213572U - Twist prevention device and twist prevention system - Google Patents

Abstract

The present invention provides a twist prevention device that prevents twisting without generating wrinkles in a rolled rolled material in a process of transporting a rolled rolled material rolled by a final rolling mill to a cooling bed. A twist preventing device includes a pair of follower rollers having a support shaft, an eccentric shaft, and a gear that drive a pair of follower rollers that rotate in a direction perpendicular to a conveying direction of a rolled material having a width of two faces. Adjusting the inclination of the pair of follower rollers 31 to a plane perpendicular to the conveying direction, the unit 30 and the follower roller inter-surface adjustment unit 4 that adjusts the width between the surfaces of the pair of follower rollers to the two-surface width of the rolled material. The pair of follower rollers 31 having an inter-surface inclination angle adjustment unit 13 that adjusts the inclination of the rolled rolled material with a width corresponding to the two-surface width of the rolled rolled material based on the biasing force of the elastic body 10. While being maintained, the rolled material is conveyed. [Selection] Figure 2

Description

  The present invention relates to a technique for preventing twisting of a rolled rolled material in a process of conveying a rolled material rolled by a final rolling mill to a cooling bed.

  Rolled material such as rolled steel is conjugated by a roller guide device and guided to a rolling roller of a rolling mill, and then processed into a predetermined thickness by being sandwiched and rolled by a rolling roll (for example, a patent) Reference 1). In this rolling process, the rolled material is processed into a predetermined product via one or a plurality of rolling mills according to the material, thickness, and the like of the rolled material.

  Rolled material (hereinafter referred to as “rolled rolled material”) processed by the final rolling mill (the last rolling mill for rolling the rolled material in the rolling process) is induced by a number of troughs that are friction guides, It is conveyed to the cooling bed. The rolled rolled material conveyed is cooled in a cooling bed (cooling process).

JP 2017-69692 A

  For example, when the rolled material is a screw rebar having a width of two faces, the rolled material discharged from the final rolling mill is guided toward the cooling bed for cooling via a number of troughs that are friction guides. The In the conveyance line here, one end of the pipe was conveyed through the rolled material in the form of a plurality of pipes having openings larger than the diameter of the pipe arranged in series. Thereby, while preventing wrinkles, it was made not to contact and to reduce the conveyance speed of a rolled material after rolling.

  However, since this conveyance line has a length of, for example, several tens of meters, unrestricted screw rebars are twisted during the conveyance process, which may result in inaccurate products. More specifically, since the moving distance of the rolled material is long (for example, about 20 m to 50 m) from the exit side of the final stand to the cooling floor, twist is derived in the rolled material due to contact resistance with the moving trough. And stable rolling was not possible.

  Further, in order to prevent twisting of the rolled material having a width of two faces, much adjustment time is required for adjusting the roller guide on the final stand entry / exit side and adjusting the rolling roll.

  Furthermore, depending on the product size, the threaded portion of the rolled rolled material is in contact with the pinch roll (pulling or slowing down) before the cooling floor, so the twisted rolling material was twisted when the pinch roller clearance adjustment was poor. .

  Therefore, the present invention provides a twist prevention device that prevents twisting without causing wrinkles in the rolled material in the process of transporting the rolled material rolled by the final rolling mill to the cooling bed.

  A twist prevention device according to one aspect of the present invention includes a support shaft that rotatably supports a pair of follower rollers that rotate in a direction perpendicular to a conveyance direction of a rolled material having a width of two faces, and the support A pair of follower roller units having an eccentric shaft that rotates eccentrically integrally with the shaft, and a gear that rotates the eccentric shaft, and sandwiching and transporting the rolled material by the pair of follower rollers; A rack gear that meshes and slides with each other, a width between the surfaces of the pair of tracking rollers via the gear and the rack gear, and an adjustment unit between the tracking roller surfaces that adjusts to a two-surface width of the rolled material, An elastic body that applies a biasing force in a direction that narrows the space between the pair of tracking rollers according to the operation of the rack gear and the operation of the adjustment unit between the tracking roller surfaces, and perpendicular to the conveyance direction A pair of follower rollers that adjust the inclination of the pair of follower rollers, and the pair of follower rollers that have been adjusted in inclination are rolled based on the biasing force of the elastic body. The rolled rolled material is conveyed while maintaining the posture of the rolled rolled material with a width corresponding to the width of two faces of the rolled material.

  Here, the “elastic body” includes, for example, all of springs, rubber, and other materials having elastic force.

  The follower roller surface adjusting portion is provided in the slide direction at the other end of the elastic body that abuts on one end of the rack gear and an adjustment shaft between the follower roller surfaces that are inserted into the rack gear and the elastic body. When a force is applied in a direction in which the width of the rolled rolled material is expanded from the adjusted inter-surface width, the rack gear slides through the gear according to the rotation of the eccentric shaft, The elastic body contracts in accordance with the slide of the rack gear, and the distance between the surfaces of the pair of follower rollers follows the dimensional change of the rolled material.

  The conjugating force adjusting unit is a conjugating force adjusting nut provided on the adjusting shaft between the following roller surfaces and contacting the elastic body. When the conjugating force adjusting nut is tightened, one end of the rack gear and the conjugating force adjusting The elastic body that comes into contact with the nut contracts.

  Moreover, you may construct | assemble the anti-twisting system which provided the above-mentioned twist prevention apparatus which concerns on this invention from one after rolling process to the cooling process.

  ADVANTAGE OF THE INVENTION According to this invention, in the process of conveying the rolled material rolled by the final rolling mill to a cooling bed, twist can be prevented without generating wrinkles in a rolled material. Specifically, the initial width between the surfaces of the pair of tracking rollers is adjusted to the two-surface width of the rolled rolled material via the gear and the rack gear by the tracking roller surface adjusting unit. Moreover, the inclination of the pair of follower rollers is adjusted in the plane perpendicular to the conveyance direction by the inter-surface inclination angle adjustment unit. Then, when the rolled rolled material conveyed between the surfaces of the follower roller whose inclination is adjusted is sandwiched, the follower roller rotates while merging the rolled rolled material by the urging force of the elastic body, and the rolled rolled material is removed. Send in the transport direction. When the posture of the rolled rolled material is maintained by the pair of tracking rollers, and the force is applied in the direction in which the width of the two surfaces of the rolled rolled material conveyed is wider than the width of the surface adjusted by the adjusting unit between the tracking rollers, A force is applied to the incorporated elastic body in a direction to narrow the space between the follower rollers. As a result, even if there is a change in the two-surface width of the rolled rolled material, the follower roller rotates while tying the rolled rolled material by the biasing force of the elastic body, and the rolled rolled material is sent out in the conveying direction.

As a result, the follower roller always comes into contact with the change in the two-side width of the rolled product and follows the change in the two-side width, so the rolled product is conjugated with a predetermined conjugation force. It is possible to prevent the occurrence of twisting by maintaining the posture of the material.
In addition, the rolled material has been gradually inclined as it is conveyed unless it is held from the outside, but by adjusting the inclination angle of the following roller to the desired angle by the inter-surface inclination angle adjustment unit, Even if the two-sided width of the rolled rolled material is inclined and conveyed, it can be adjusted so as to eliminate the inclination of the rolled rolled material, and the two-sided width of the rolled material can be appropriately sandwiched and followed by the follower roller.

  In addition, the conjugation force in the present invention does not reduce the thickness of the two-sided width of the rolled rolled material, but only requires a conjugating force to follow the follower roller along the shape of the rolled rolled material. No conjugation force is required until wrinkles occur in the finished rolled material.

Moreover, the space | interval of a pair of tracking roller can track the dimensional change of a rolled rolled material.
Moreover, the bending force of an elastic body can be adjusted and the conjugation force which pinches | interposes a rolled rolled material between the surfaces of a follower roller can be adjusted. Thereby, it can adjust so that it may become a desired conjugation force.

  When the distance from the final rolling mill exit side to the cooling bed is long, stable rolling can be performed by using two or more twist prevention devices 1 in combination.

It is a top view of the twist prevention apparatus in this embodiment. It is a side view of the twist prevention apparatus in this embodiment. It is a front view of the twist prevention apparatus in this embodiment. It is sectional drawing of a tracking roller unit. Fig.5 (a) is a figure which shows an example of the rolling material of conveyance object, FIG.5 (b) is FIG.5 (b), while a rolling material is pinched | interposed with a desired conjugation force with a pair of following rollers. It is a figure which shows the state currently conveyed in the orthogonal | vertical direction with respect to the plane direction. It is a state transition diagram of a follower roller surface adjustment mechanism part in this embodiment. It is a figure for demonstrating the adjustment of the inclination angle between the surfaces of a tracking roller. It is a figure which shows the structural example of the twist prevention system provided with a single or multiple during a cooling process after a rolling process after a twist prevention apparatus.

  FIG. 1 is a plan view of the twist preventing apparatus according to the present embodiment. FIG. 2 is a side view of the twist preventing apparatus according to the present embodiment. FIG. 3 is a front view of the twist preventing apparatus according to the present embodiment. First, the structure of the twist prevention apparatus in this embodiment is demonstrated, referring FIG.1, FIG.2, FIG.3.

  As shown in FIG. 1, a follower roller inter-surface adjustment mechanism 11 is provided on the upper part of the twist prevention device 1. The follow-up roller surface adjustment mechanism unit 11 mainly includes a follow-up roller surface adjustment unit 4, a rack gear 8, a conjugation force adjustment unit 9, and an elastic body 10. Further, a top plate 29 is fixed to the upper part of the twist preventing device 1.

  The follower roller surface adjustment unit 4 includes a follower roller surface adjustment nut 2, a hexagonal part 3, a follower roller surface adjustment shaft 5, a rack stopper 28, a fixed block (lower side) 6, and a fixed block (upper side) 12. Is done. The follow-up roller surface adjusting nut 2 is fixed to the top plate 29 by a fixed block (lower side) 6 and a fixed block (upper side) 12.

The follower roller surface adjustment shaft 5 is a bolt connected to the follower roller surface adjustment nut 2. One end of the tracking roller inter-surface adjustment shaft 5 is inserted into the rack gear 8, and the hexagonal portion 3 is provided at the other end. The position of the follower roller inter-surface adjustment shaft 5 can be adjusted in the longitudinal direction by pressing the hexagonal part 3 with a spanner and rotating the follower roller inter-surface adjustment nut 2.
That is, by adjusting the follower roller inter-surface adjustment shaft 5, the follower roller 31 is set so that the surface of each follower roller 31 is always in contact with the two-surface width of the rolled rolled material.

  The tracking roller inter-surface adjustment shaft 5 is provided with a rack stopper 28 and a conjugating force adjustment unit 9. The rack stopper 28 is a stopper that limits the movement range so that the rack gear 8 does not move forward (leftward in FIG. 1) from the rack stopper 28.

  The rack gear 8 is slidably disposed as shown in FIGS. The rack gear 8 has a hollow cylindrical shape or a rectangular parallelepiped shape, and has a shape obtained by removing one of the surfaces farthest from each other.

  On both side surfaces of the rack gear 8 in the short direction, gears 7 integrated with an eccentric shaft 47 that mesh with the rack gear 8 are provided. The surface facing the opening of the rack gear 8 has a hole slightly larger than the diameter of the tracking roller inter-surface adjustment shaft 5 so that the rack gear 8 can be inserted into the tracking roller inter-surface adjustment shaft 5. The rack gear 8 incorporates an elastic body 10, and the tracking roller inter-surface adjustment shaft 5 is inserted through the elastic body 10.

  The elastic body 10 is an elastic body that applies force in a direction to narrow the space between the follower rollers 31 according to the operation of the rack gear 8 and the operation of the follower roller surface adjusting unit 4. In addition, as the elastic body 10, you may use a spring, a leaf | plate spring, rubber | gum etc. according to a specification.

  The conjugating force adjusting unit 9 adjusts the conjugating force applied in the width direction between the surfaces of the pair of follower rollers 31 to the necessary conjugating force according to the width of the rolled material via the gear 7 and the rack gear 8. Can do. The conjugating force adjusting unit 9 is, for example, a conjugating force adjusting nut 9a.

  The rack gear 8 has a configuration in which the follower roller inter-surface adjustment shaft 5 is inserted by the rack stopper 28 until it is stopped and inserted through the elastic body 10 inside and then fixed by the conjugating force adjusting unit 9.

  When the conjugating force adjusting unit 9 is adjusted, that is, when the concluding force adjusting nut 9a is tightened or loosened, the conjugating force adjusting nut 9a moves along the thread of the bolt of the follower roller inter-surface adjusting shaft 5. Thereby, when the conjugation force adjustment nut 9a is tightened, the other end of the elastic body that comes into contact with one end of the rack gear 8 is pushed by the conjugation force adjustment nut 9a, and the elastic body 10 contracts.

  In this way, by adjusting the conjugating force adjusting unit 9, the amount of bending of the elastic body 10 can be changed to adjust the conjugating force. The elastic body 10 absorbs the dimensional change of the two-sided width generated during rolling, and the follower roller 31 can follow the two-sided width of the rolled material.

  A pair of follower rollers 31 supported by the support shaft 41 is disposed. The pair of follower roller units 30 integrally include a follower roller 31, a support shaft 41, an eccentric shaft 47, and a gear 7. The support shaft 41 pivotally supports the follower roller 31 that rotates in a direction perpendicular to the conveying direction of the rolled material having a width of two faces. The support shaft 41 is integral with the eccentric shaft 47 and rotates eccentrically. The gear 7 rotates the eccentric shaft 47 as the rack gear 8 moves. By the eccentric rotation of the support shaft 41, the space between the follower rollers 31 can be opened and closed according to the two-surface width dimension of the rolled product.

  The follower roller 31 holds the rolled material with a width corresponding to the width of the two surfaces of the rolled material based on the biasing force of the elastic body 10 adjusted by the conjugating force adjusting unit 9. When a force is applied in the direction in which the width of the rolled material is expanded from the adjusted inter-surface width, the rack gear 8 slides through the gear 7 according to the rotation of the eccentric shaft 47, and the rack gear 8 slides. Thus, the elastic body 10 expands and contracts to follow the surface of the follower roller 31.

  The gear 7 is configured to mesh with the rack gear 8. The rack gear 8 is driven in accordance with the operation of the tracking roller inter-surface adjustment shaft 5, whereby the inter-surface of the tracking roller 31 is opened and closed via the gear 7. The configuration of the tracking roller unit 30 will be described in detail with reference to FIG.

  The pair of follower rollers 31 are provided symmetrically with respect to the follower roller inter-surface adjustment shaft 5. The eccentric rotation of the support shaft 41 is also performed symmetrically with respect to the follower roller inter-surface adjustment shaft 5.

  In addition, since each of a pair of tracking roller 31 has the same structure, it attaches | subjects the same code | symbol and demonstrates only one side below.

  The roller holder 24 has a lower portion fixed to the guide box 16 and an upper portion fixed to the holder fixing bracket 17. The body of the roller holder 24 incorporates an annular worm wheel 23. Along with the rotation of the worm 15 provided so as to be rotatable, the worm wheel 23 on the ring rotates, so that the entire roller holder 24 rotates.

  By rotating the inter-surface inclination angle adjusting unit 13, the entire roller holder 24 is rotated, and the inclination of the pair of follower rollers 31 is adjusted with respect to the transport direction. The inter-surface inclination angle adjusting unit 13 is provided with a worm 15 that meshes with the worm wheel 23 at the center of the inter-surface inclination angle adjusting shaft 14.

  The rolled rolled material is guided to the space between the pair of follower rollers 31 through the entry guide 18 through a hole opened in the body portion of the roller holder 24.

  FIG. 4 is a cross-sectional view of the tracking roller unit. A gear 7 is provided in the circumferential direction of the eccentric shaft 47. The support shaft 41 is formed integrally with the eccentric shaft 47. The support shaft 41 pivotally supports a pair of follower rollers 31 that rotate in a direction perpendicular to the conveying direction of the rolled material having a width of two faces.

  Fig.5 (a) is a figure which shows an example of the rolled rolled material of conveyance object, FIG.5 (b) is FIG.5, while a rolled rolled material is pinched | interposed with a desired conjugation force with a pair of following rollers. It is a figure which shows the state conveyed in the orthogonal | vertical direction with respect to the plane direction of (b).

  Here, an adjustment method between the surfaces of the pair of follower rollers 31 will be described. First, the hexagonal portion 3 at the tip of the follower roller surface adjustment shaft 5 is pressed with a spanner or the like, and the follower roller surface adjustment nut 2 is rotated to adjust the surface of the follower roller 31. The space between the surfaces of the follower roller 31 is set so that the follower roller 31 has a dimension that is always in contact with the two-surface width of the rolled material. The inter-surface adjustment of the tracking roller 31 will be described with reference to FIG.

  FIG. 6 is a state transition diagram of the follow-up roller surface adjusting mechanism unit in the present embodiment. 6A is assumed to be in a state before adjustment between the surfaces of the follower roller 31, for example. In this case, the tracking roller inter-surface adjustment shaft 5 and the rack gear 8 are in a state of moving to the right side in FIG. 6 and the surface of the tracking roller 31 is in an expanded state.

  FIG. 6B shows a state in which the follower roller surface is adjusted to the same width as the two-sided width of the rolled material by the follower roller surface adjusting shaft 5.

  In this case, the hexagonal portion 3 at the tip of the tracking roller surface adjustment shaft 5 is pressed with a spanner or the like, the tracking roller surface adjustment nut 2 is rotated, and the tracking roller surface adjustment shaft 5 is moved to the left side of FIG. Move. Then, the rack gear 8 connected to the adjusting shaft 5 between the following roller surfaces also moves to the left in FIG. Then, the gear 7 of the follower roller 31 meshing with the rack gear 8 operates to rotate the support shaft 41 of the follower roller 31, so that the support shaft 41 is eccentrically rotated so that the space between the follower rollers 31 is as shown in FIG. It becomes narrower than the case of (a).

  After adjusting the distance between the surfaces of the follower roller 31, when the rolled rolled material conveyed is sandwiched between the surfaces of the follower roller 31, the follower roller 31 rotates while merging the rolled material with the urging force of the elastic body 10. The rolled rolled material is fed in the conveyance direction while maintaining the posture of the rolled rolled material.

  FIG. 6 (c) shows that the distance between the surfaces of the follower roller 31 is adjusted to the same width as the two-surface width of the rolled rolled material and the rolled material is conveyed. The state where the rolled rolled material with thickness has been conveyed is shown.

  In this way, force is applied to the elastic body 10 incorporated in the rack gear 8 in a direction to narrow the space between the follower rollers 31. Thereby, even if there is a change in the two-surface width of the rolled rolled material, the follower roller 31 can rotate while tying the rolled rolled material by the urging force of the elastic body 10 and send the rolled rolled material in the transport direction. it can.

  FIG. 7 is a diagram for explaining the adjustment of the inclination angle between the surfaces of the follower roller. FIG. 7 is a view of the torsion preventing device 1 on the rear side of the torsion preventing device 1, that is, from the back of FIG.

  When the inter-surface tilt angle adjusting shaft 14 of the inter-surface tilt angle adjusting unit 13 is rotated, the worm 15 rotates and the worm wheel 23 engaged with the worm 15 rotates in the plane direction of FIG. Then, the roller holder 24 concentric with the worm wheel 23 rotates, and the follower roller 31 and the follower roller inter-surface adjustment mechanism unit 11 also rotate integrally. Thus, the inclination angle between the surfaces of the follower roller 31 can be adjusted. Thereby, the twist of the 2 surface width of a rolled rolled material can be prevented.

  FIG. 8 is a diagram illustrating a configuration example of a twist prevention system including one or a plurality of twist prevention apparatuses after the rolling process to the cooling process. The torsion prevention system 60 is provided with one or a plurality of torsion prevention devices 1 between the rolling process and the cooling process. The rolled material guided by the entrance roller guide 62 is rolled by the final rolling mill 61 and discharged from the exit roller guide 63 of the final rolling mill 61. Rolled rolled material discharged from the outlet roller guide 63 is guided in the plurality of troughs 65 and guided to the cooling bed.

  At this time, in FIG. 8, one or more twist prevention devices 1 are intermittently arranged in some of the troughs 65 arranged in series. Thereby, since the attitude | position of the rolled rolled material is maintained so that it may not twist by the twist prevention apparatus 1 by which the 2 side width | variety of the rolled rolled material conveyed by the trough 65 is intermittently arrange | positioned, Twist can be prevented.

  As described above, the twist prevention device 1 according to this embodiment includes the pair of follower roller units 30, the rack gear 8, the follower roller inter-surface adjustment unit 4, the elastic body 10, and the inter-surface inclination angle adjustment unit 13. have.

  The pair of follower roller units 30 includes a pair of follower rollers 31, a support shaft 41, an eccentric shaft 47, and a gear 7. The rolled rolled material is sandwiched and conveyed by the pair of follower rollers. The support shaft 41 pivotally supports each of the pair of follower rollers 31 that rotate in a direction perpendicular to the conveying direction of the rolled material having a width of two faces. The eccentric shaft 47 is eccentrically rotated integrally with the support shaft 41. The gear 7 rotates the eccentric shaft 47.

  The rack gear 8 slides while meshing with each of the gears 7. The follower roller inter-surface adjustment unit 4 adjusts the width between the surfaces of the pair of follower rollers via the gear 7 and the rack gear 8 to the two-surface width of the rolled rolled material.

  The elastic body 10 applies a biasing force in a direction to narrow the space between the pair of tracking rollers 31 according to the operation of the rack gear 8 and the operation of the tracking roller surface adjusting unit 4. The inter-surface inclination angle adjustment unit 13 adjusts the inclination of the pair of follower rollers on a plane perpendicular to the conveyance direction.

  By configuring in this way, the pair of follower rollers 31 whose inclinations are adjusted while maintaining the posture of the rolled material with a width corresponding to the width of the two surfaces of the rolled material based on the biasing force of the elastic body. The rolled material is transported.

  The rolled material is gradually inclined as it is conveyed unless it is held from the outside. With the above configuration, the inclination angle of the following roller is adjusted to a desired angle by the inter-surface inclination angle adjusting unit. Thus, even if the two-sided width of the rolled rolled material is conveyed with an inclination, it can be adjusted so as to eliminate the inclination of the rolled rolled material, and the two-sided width of the rolled material can be appropriately sandwiched and followed by a follower roller. Therefore, twisting can be prevented without causing wrinkles in the rolled material.

  The follow-up roller surface adjustment unit 4 includes a follow-up roller surface adjustment shaft 5 and a conjugation force adjustment unit 9. The tracking roller inter-surface adjustment shaft 5 is provided at the other end of the elastic body 10 in contact with one end of the rack gear 8 in the sliding direction, and the linking force adjusting portion 9 inserted through the rack gear 8 and the elastic body 10.

  By configuring in this way, when a force is applied in the direction in which the width of the rolled material is expanded from the adjusted inter-surface width, the rack gear 8 slides through the gear 7 according to the rotation of the eccentric shaft 47, As the rack gear 8 slides, the elastic body 10 contracts, and the space between the pair of follower rollers 31 follows the dimensional change of the rolled material.

  The conjugating force adjusting unit 9 is a conjugating force adjusting nut 9 a provided on the follower roller inter-surface adjusting shaft 5 and in contact with the elastic body 10. With this configuration, when the conjugating force adjustment nut 9a is tightened, the elastic body 10 that contacts the one end of the rack gear 8 and the conjugating force adjustment nut 9a contracts.

  Furthermore, the twist prevention system 60 may be constructed by arranging one or a plurality of the twist prevention apparatuses 1 after the rolling process until the cooling process. By comprising in this way, 1 to several can be installed as a twist prevention apparatus of a screw rebar from after a final rolling mill delivery side to a cooling bed. When the distance from the final rolling mill exit side to the cooling bed is long, stable rolling can be performed by using two or more twist prevention devices 1 in combination.

  According to the present embodiment, the follower roller 31 is always in contact with the change in the two-side width of the rolled rolled material and follows the change in the two-side width, so the rolled rolled material is conjugated with a predetermined conjugation force. And the occurrence of twisting can be prevented. In addition, the inter-roller surface adjustment and conjugation force adjustment of the follow-up roller 31 can be performed by the follow-up roller inter-surface adjustment mechanism unit 11.

  In addition, since the conjugation force in this embodiment does not reduce the thickness of the two-sided width of the rolled rolled material, only a conjugating force that the following roller 31 follows along the shape of the rolled rolled material is necessary. Further, a conjugation force until wrinkles are generated in the rolled material is not required.

  As a result, the rolled product is not twisted, and the yield and product accuracy are improved. Further, the production efficiency is improved by reducing the adjustment work time for preventing torsion, more specifically, adjusting the roller guides before and after the final rolling mill and reducing the work time for adjusting the roll. Good product accuracy and stable rolling.

  The present invention is not limited to the embodiments described above, and various configurations or embodiments can be taken without departing from the gist of the present invention.

DESCRIPTION OF SYMBOLS 1 Twist prevention apparatus 2 Tracking roller surface adjustment nut 3 Hexagon part 4 Tracking roller surface adjustment part 5 Tracking roller surface adjustment shaft 6 Fixed block (lower side)
7 Gear 8 Rack gear 9 Conjugation force adjustment part 9a Conjugation force adjustment nut 10 Elastic body 11 Tracking roller surface adjustment mechanism part 12 Fixed block (upper side)
DESCRIPTION OF SYMBOLS 13 Inter-surface inclination adjustment part 14 Inter-surface inclination adjustment shaft 15 Worm 16 Guide box 17 Holder fixing bracket 18 Entry guide 23 Worm wheel 24 Roller holder 28 Rack stopper 29 Top plate 30 Following roller unit 31 Following roller 41 Support shaft 47 Eccentricity Shaft 60 Torsion prevention system 61 Final rolling mill 62 Entrance roller guide 63 Exit roller guide 65 Trough

Claims (4)

A support shaft that pivotally supports each of a pair of follower rollers that rotate in a direction perpendicular to the conveying direction of the rolled material having a two-sided width; an eccentric shaft that rotates eccentrically integrally with the support shaft; A pair of follower roller units having a gear that rotates the eccentric shaft, and sandwiching and transporting the rolled material by the pair of follower rollers;
A rack gear that meshes and slides with each of the gears;
Via the gear and the rack gear, the width between the surfaces of the pair of follower rollers to adjust the width between the follower roller surfaces to the two surface width of the rolled rolled material,
According to the operation of the rack gear and the operation of the tracking roller surface adjustment unit, an elastic body that applies a biasing force in a direction to narrow the space between the pair of tracking rollers,
In a plane perpendicular to the transport direction, an inter-surface inclination angle adjustment unit that adjusts the inclination of the pair of following rollers,
The pair of follower rollers adjusted in inclination are maintained in the rolled rolling material while maintaining the posture of the rolled material with a width corresponding to the width of two faces of the rolled material based on the biasing force of the elastic body. An apparatus for preventing torsion which conveys a rolled material. The follower roller surface adjustment unit is
In the sliding direction, a tracking roller inter-surface adjustment shaft that is inserted through the rack gear and the elastic body,
A conjugating force adjusting portion provided at the other end of the elastic body that comes into contact with one end of the rack gear;
When a force is applied in a direction in which the width of the rolled rolled material is expanded from the adjusted inter-surface width, the rack gear slides through the gear according to the rotation of the eccentric shaft, and according to the slide of the rack gear The twist preventing apparatus according to claim 1, wherein the elastic body contracts, and a space between the pair of follower rollers follows a dimensional change of the rolled product. The conjugating force adjusting portion is a conjugating force adjusting nut that is provided on the adjusting shaft between the following roller surfaces and comes into contact with the elastic body,
The torsion prevention device according to claim 2, wherein when the coupling force adjusting nut is tightened, the elastic body contacting the one end of the rack gear and the coupling force adjusting nut is contracted. A twist prevention system comprising one or a plurality of twist prevention apparatuses according to any one of claims 1 to 3 during a period from a rolling step to a cooling step.

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