JP2009107023A - Straightening apparatus and method for carrying-in and carrying-out straightening roll - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a straightening apparatus with which accurate straightening can be performed by raising the rigidity of the main body of a straightening machine. <P>SOLUTION: A conveying truck 70 is arranged freely movably in a direction crossing the pass line PL on the downstream side of a material feeding direction of the main body 11 of a straightening machine 10. The conveying truck 70 is moved between a straightening position and a changing position which are separated in the crossing direction by a moving device 71. On the conveying truck 70, a plurality of guide rollers 72 which are aligned on the pass line PL when the truck is positioned in the straightening position are arranged and materials to be straightened are conveyed along the pass line PL with the guide rollers 72. Furthermore, on the conveying truck 70, a carrying-in/carrying-out cylinder 74 with which pulling-out and feeding-in of the straightening rolls 12, 13 to the main body 11 are performed in the direction along the pass line PL in such a state that the truck is positioned in the changing position is arranged. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a straightening device including a straightening machine in which a pair of straightening rolls for straightening a bent material to be straightened is disposed in a main body, and a method for carrying in and out the straightening roll with respect to the main body.

  For example, a straightening device that corrects the bending that occurs when processing a material to be straightened such as a round bar or steel pipe into a round bar or steel pipe with the desired dimensions, shape, and mechanical properties uses a pair of straightening rolls. A material carry-in device and a material carry-out device that are rotatably provided with a plurality of conveying rollers at predetermined intervals along the pass line on the upstream side and the downstream side in the material feeding direction of the straightening machine (for example, Patent Document 1). By being arranged and rotationally driving each conveying roller, the material to be corrected is supplied to the correction machine and the material is discharged from the correction machine.

  The straightening machine has a main body configured by connecting an upper frame and a lower frame, which are separated in the vertical direction, with support posts (tie rods) arranged at four corners. A lower rotary table is disposed on the upper surface of the lower frame so as to be turnable by an angle adjusting device so as to be turnable horizontally, and a lower correction roll is rotatably provided on the upper surface of the lower turntable via a bearing. . In addition, an intermediate plate that is moved up and down by a reduction device disposed on the upper frame is slidably disposed on the four columns facing the upper and lower frames. An upper rotary table is disposed on the intermediate plate so as to be turnable by an angle adjusting device so as to be turnable horizontally, and an upper correction roll is rotatably provided on the lower surface of the upper turntable via a bearing. Each of the upper and lower straightening rolls is connected to an external driving means via a universal joint so as to be driven to rotate.

  When the correction material is to be corrected by the correction device, first, the upper and lower correction rolls in the correction machine are swung by the corresponding angle adjustment device so as to be mutually at a predetermined inclination angle with respect to the pass line of the correction material. Position to cross. Next, the intermediate plate is adjusted up and down through the reduction device, thereby forming a required gap between the lower correction roll and the upper correction roll (adjusting the reduction). Then, while both the correction rolls are rotationally driven in the opposite directions by the external driving means, the material to be corrected is passed between the correction rolls by passing the correction material supplied by the material carry-in device between the correction rolls. Made.

In the straightening machine, if the surface of the straightening roll is scratched, scales, etc. are attached due to baking, or local wear occurs, it is impossible to perform accurate correction of the material to be straightened. It is necessary to carry out repairs such as polishing and cutting, or to replace with new rolls. In this case, in a state where each correction roll is separated from the external drive means, the angle adjustment device is rotated until the rotation axis is in a direction perpendicular to the pass line, and the upper correction roll is placed on the lower correction roll. At the same time, after the two straightening rolls are separated from the main body, the two straightening rolls are pulled out to the side of the main body (one side orthogonal to the pass line) via a carriage or the like. And the correction | amendment correction roll or a new correction roll is sent in from the side with respect to a main body, and is assembled | attached to the main body.
JP-A-5-285572

  The straightening roll is used in a posture inclined at a range of 5 to 30 ° with respect to the pass line at the time of straightening, and the connecting portion with the external drive means in the straightening roll is upstream or downstream in the material feeding direction in the main body. It faces an opening defined between a pair of support columns located on the side. For this reason, in order to prevent the connecting portion of the correction roll from interfering with the support when the correction roll is turned until the rotation axis is in a posture orthogonal to the pass line at the time of renovation or replacement, the correction roll It was necessary to arrange outside the swivel area.

  That is, since the spacing between the support frames connecting the upper and lower frames is widened, it causes a decrease in the rigidity of the main body, and it is difficult to suppress the occurrence of vibration during correction. Point out the disadvantages of being unable to achieve high-precision correction. Therefore, it is conceivable to increase the rigidity of the column by increasing the size of the column. In this case, however, the main body is enlarged and a large installation space is required.

  The present invention has been proposed to solve these problems in view of the above-described problems inherent in the prior art, and a correction apparatus capable of performing high-precision correction by increasing the rigidity of the body of the correction machine and An object is to provide a method for carrying in and out the correction roll.

In order to overcome the above-mentioned problems and achieve the intended purpose, the correction device of the invention according to claim 1 of the present application provides:
A pair of straightening rolls positioned above and below the pass line of the material to be corrected and intersecting each other at a predetermined angle with respect to the pass line are provided with a straightening machine that is detachably supported by the main body and rotatably supported. In a straightening device that straightens the material to be fed along the line by passing it between both straightening rolls,
On the upstream side or the downstream side in the material feeding direction of the main body, a transport carriage disposed movably in the direction intersecting the pass line;
A moving device for moving the transport carriage between a correction position and an exchange position separated in the crossing direction;
A plurality of guide rollers that are rotatably disposed on the upper surface of the transport carriage, and are aligned with a pass line when the transport carriage is positioned at a correction position, and can feed a material to be corrected along the pass line;
With the transport carriage positioned at the replacement position, the drawer is disposed along the pass line of the correction roll from the main body to the transport carriage and along the pass line from the transport carriage to the main body. And a loading / unloading means capable of feeding in the direction.

  According to the first aspect of the present invention, it is possible to arrange the members constituting the main body close to the correction roll at the time of correction by configuring the main body so as to draw out or send the correction roll along the pass line. It is possible to increase the rigidity of the main body and to suppress the generation of vibrations during correction, thereby performing high-precision correction. Further, the main body can be reduced in size, and the installation space can be reduced by the reduction in size.

The invention according to claim 2 is characterized in that the main body is configured by connecting and fixing a pair of frame-like members separated in a direction along the path line or in a crossing direction via a connecting member at a plurality of locations. To do.
According to the invention which concerns on Claim 2, the rigidity of a main body can be made higher by comprising a main body using a frame-shaped member with high rigidity, and a more highly accurate correction can be performed.

In order to overcome the above-mentioned problems and achieve the intended purpose, the straightening roll carry-in / out method of the invention according to claim 3 of the present application,
A pair of straightening rolls positioned above and below the pass line of the material to be corrected and intersecting each other at a predetermined angle with respect to the pass line are provided with a straightening machine that is detachably supported by the main body and rotatably supported. In a straightening device that straightens the material to be fed along the line by passing it between both straightening rolls,
The upper correction roll is placed on the lower correction roll while the pair of correction rolls are swung to a position where the rotation axis is along the pass line.
The conveyance carriage located upstream or downstream in the material feeding direction in the main body is moved from a correction position where a plurality of guide rollers arranged on the upper surface of the conveyance carriage are aligned with the pass line. Move to a separate replacement position,
By means of loading / unloading means disposed on the transport carriage, the correction roll separated from the main body is pulled out from the main body along the pass line onto the transport carriage,
A corrected correction roll or a new correction roll placed on the transport carriage is fed into the main body along a pass line by the carry-in / out means.

  According to the invention of claim 3, by pulling out or feeding the correction roll along the pass line to the main body, the members constituting the main body can be arranged close to the correction roll at the time of correction. Therefore, high-precision correction can be performed by suppressing the occurrence of vibrations and the like during correction. Further, the main body can be reduced in size, and the installation space can be reduced by the reduction in size.

  According to the straightening device and the method of carrying in / out the straightening roll according to the present invention, it is possible to perform high-precision correction by increasing the rigidity of the main body and suppressing the occurrence of vibration or the like during correction. Further, the main body can be miniaturized and the installation space can be reduced.

  Next, a preferred embodiment of the straightening apparatus and straightening roll loading / unloading method according to the present invention will be described in detail below with reference to the accompanying drawings.

  As shown in FIG. 1 and FIG. 2, the straightening machine 10 that forms the straightening device according to the embodiment and straightens the straightened material W includes a path of the straightened material W in the straightening space S defined inside the main body 11. An upper straightening roll 12 and a lower straightening roll 13 are provided across the line PL. A material loading / unloading device 14 and a material unloading device in which a plurality of conveying rollers (not shown) are arranged at predetermined intervals along the pass line PL on the upstream side and the downstream side in the material feeding direction of the straightening machine 10. 15 (see FIG. 6) is arranged, and the material to be corrected W carried into the correction space S by the material carry-in device 14 is downstream by the material carry-out device 15 after being subjected to the required correction by both the correction rolls 12 and 13. It is carried out to.

(About the body of the straightening machine)
As shown in FIGS. 1 and 2, the main body 11 of the straightening machine 10 includes a pair of frame-shaped members 16 and 16 that are separated in the material feeding direction along the pass line PL of the material W to be corrected, and both the frame-shaped members. It is basically composed of a plurality of connecting members 17 that connect 16, 16, and a plurality of holding members 18 that are inserted between the two frame-like members 16, 16 and hold the intervals. Each frame-like member 16 is rectangular by connecting a pair of vertical frame members 19 and 19 formed in a square tube shape and a pair of horizontal frame materials 20 and 20 similarly formed in a square tube shape. The frame-shaped member 16 is formed with a rectangular opening 16a. Then, the material to be corrected W conveyed by the material carry-in device 14 is passed into the correction space S from the opening 16a of the frame-like member 16 located on the upstream side in the material feeding direction, and the material to be corrected after correction. W passes through the opening 16a of the frame-like member 16 located on the downstream side in the material feeding direction to the material carry-out device 15.

  A rectangular holding member 18 is inserted between the four corners of the frame members 16 and 16 (specifically, the portions facing the upper and lower ends of the opening 16a in the vertical frame members 19 and 19). ing. In each holding member 18, two through holes 18a, 18a are formed along the pass line PL so as to be separated from each other in the vertical direction, and the connecting member 17 is inserted into each through hole 18a and extends along the pass line PL. Exist. As shown in FIG. 2, both end portions of each connecting member 17 extending from the holding member 18 are inserted into through holes formed in the corresponding frame-shaped member 16, and are formed at end portions protruding from the frame-shaped member 16. By screwing the nut 21 into the threaded portion, the two frame-shaped members 16 and 16 are connected and fixed with the holding member 18 interposed therebetween.

  An upper frame 22 and a lower frame 23 that are separated in the vertical direction across the pass line PL are disposed and fixed to the main body 11 between both frame-like members 16 and 16. A lower rotary table 24 is disposed on the upper surface of the lower frame 23 so as to be horizontally rotatable. The lower correction table 24 is provided on the upper surface of the lower rotary table 24 via bearings 25 and 25 (only one is shown in FIG. 1). A roll 13 is rotatably arranged. The lower rotary table 24 is pivotally adjusted by an angle adjusting device (not shown) disposed in the lower frame 23 so that the rotational axis of the lower correction roll 13 can be inclined at a predetermined angle with respect to the pass line PL. Is done. Further, as shown in FIG. 2, the connecting portion 13a provided at one end of the rotating shaft of the lower straightening roll 13 extends outward through the opening 16a of the frame-like member 16 disposed on the downstream side, and the connection is made. The part 13a is connected to external drive means (not shown) via a universal joint.

  Below the upper frame 22, an elevating member 26 disposed so as to be movable up and down with respect to the main body 11 faces, and the elevating member 26 includes a plurality of reducing screws disposed on the upper frame 22. 27. A support member 28 is provided below the elevating member 26 so as to be movable up and down with respect to the elevating member 26. An upper rotary table 29 is disposed on the lower surface of the support member 28 so as to be horizontally rotatable, and the upper correction is provided on the lower surface of the upper rotary table 29 via bearings 30 and 30 (only one is shown in FIG. 1). A roll 12 is rotatably arranged. The upper rotary table 29 is configured to be pivotally adjusted by an angle adjusting device (not shown) disposed on the support member 28 so that the rotation axis of the upper correction roll 12 can be inclined at a predetermined angle with respect to the pass line PL. Is done. Further, as shown in FIG. 2, the connecting portion 12a provided at one end of the rotating shaft of the upper straightening roll 12 extends outward through the opening 16a of the frame-like member 16 disposed on the upstream side, The connecting portion 12a is connected to external driving means (not shown) via a universal joint. In addition, the inclination angle of the rotation axis of both the correction rolls 12 and 13 with respect to the pass line PL is set in a range of 5 to 30 ° according to the diameter size of the material to be corrected W, the feeding speed, and the like.

  The support member 28 and the elevating member 26 are connected by a hydraulic cylinder 31 so as to move up and down integrally. By moving the elevating member 26 up and down by the reduction device 27, the elevating member 26 and The gap between the upper straightening roll 12 and the lower straightening roll 13 disposed on the support member 28 that moves up and down integrally can be adjusted according to the diameter of the material W to be straightened. . Specifically, the gap is set such that a predetermined rolling force can be applied from the correction rolls 12 and 13 when passing through both the correction rolls 12 and 13 with respect to the correction target material W having a target diameter. Further, in order to cope with a change in the diameter of the material W to be corrected by the adjusting device 34 to be described later, the correction machine 10 handles the amount of change with respect to the normal diameter of the material W to be corrected. The gap is set such that a predetermined rolling force can be applied even in the smallest diameter part to be obtained. The support member 28 and the elevating member 26 are configured to be close to and away from each other within a movable range of a piston (not shown) of the hydraulic cylinder 31.

  The upper and lower straightening rolls 12 and 13 are detachably disposed on the corresponding bearings 25 and 30. When the rolls to be described later are replaced, the straightening rolls 12 and 13 are removed from the bearings 25 and 30, and the lower straightening rolls are removed. In the state where the upper straightening roll 12 is placed on 13, both the straightening rolls 12 and 13 are exchanged at a time.

  A balance device 32 connected to the support member 28 is disposed on the upper frame 22. The balance device 32 includes a plurality of balance cylinders 33 arranged in an inverted posture on the upper frame 22, and piston rods 33 a of the balance cylinders 33 are connected to the support member 28. The hydraulic pressure supplied to all the balance cylinders 33 is set to a value that is substantially balanced with the total weight of the members disposed on the support member 28 including the support member 28. It is configured so that the weight of the same is not added as a load. In the embodiment, as will be described later, all the balances are obtained when the hydraulic pressure before pressure increase is applied to the oil chamber 31a of the hydraulic cylinder 31 and the support member 28 is lowered by a predetermined height with respect to the elevating member 26. The load applied to the cylinder 33 and the hydraulic pressure are set to be balanced. That is, in a state where no hydraulic pressure is applied to the hydraulic cylinder 31, the support member 28 is pulled up by the balance device 32 so as to be close to the elevating member 26. The support member 28 is configured to be prevented from being lowered from the maximum separation position by being restricted by a restriction member (not shown) with respect to the elevating member 26.

(Regulator)
The hydraulic cylinder 31 is connected to an adjusting device 34 that allows the upper straightening roll 12 to move closer and away (up and down movement) relative to the lower straightening roll 13 in accordance with a load applied to the hydraulic cylinder 31. As shown in FIG. 3, the adjusting device 34 includes a pressure increasing cylinder 35 connected to the hydraulic cylinder 31. In the pressure increasing cylinder 35, a piston 37 is slidably disposed in an air pressure barrel 36, and the inside of the air pressure barrel is divided into a first chamber 36a and a second chamber 36b by the piston 37. On the second chamber side of the pneumatic barrel 36, a hydraulic barrel 38 having a hydraulic chamber 38a having an inner diameter smaller than that of the second chamber 36b is disposed, and the hydraulic chamber 38a communicates with the second chamber 36b. is doing. A small-diameter piston rod 37a that moves integrally with the piston 37 is connected to the second chamber side of the piston 37, and the tip of the piston rod 37a slides inside the hydraulic chamber 38a. The The hydraulic chamber 38 a of the hydraulic barrel 38 communicates with the oil chamber 31 a of the hydraulic cylinder 31, and hydraulic oil supplied to the hydraulic chamber 38 a from an air / oil tank 39 described later enters the oil chamber 31 a of the hydraulic cylinder 31. Configured to be filled.

  As shown in FIG. 3, an oil reservoir (a lower portion of the tank 39) 39 a in an air / oil tank 39 as a hydraulic pressure supply source is connected to a hydraulic chamber 38 a of the hydraulic barrel 38 via a connection pipe 40. Has been. An air pressure supply source 42 is connected to an air storage portion (upper portion of the tank 39) 39b in the air / oil tank 39 via a solenoid valve 41 controlled by a control device (not shown). By supplying compressed air to the air reservoir 39b, the hydraulic oil stored in the oil reservoir 39a is supplied to the oil chamber 31a via the hydraulic chamber 38a. The connection position between the connection line 40 and the hydraulic chamber 38a is not blocked by the piston rod 37a facing the hydraulic chamber when the piston 37 has the smallest first chamber 36a (upper limit position). In normal correction, the position is always set to be blocked by the piston rod 37a. In normal correction, hydraulic oil does not enter and exit between the hydraulic chamber 38a and the air / oil tank 39. Further, the solenoid valve 41 is maintained in an ON state during normal correction to communicate the pneumatic pressure supply source 42 to the air storage unit 39b, and is switched to an OFF state by a control device in the case of an abnormality to be described later. Set to open to the atmosphere.

  A stop valve 44, an air filter 45, a first regulator 46, and a replicator 47 are connected to the first pipe line (supply circuit) 43 that connects the air pressure supply source 42 and the solenoid valve 41 in communication from the air pressure supply source side. They are arranged in order. The first regulator 46 is supplied from the air pressure supply source 42 to the air / oil tank 39 via the solenoid valve 41 and to the air pressure barrel 36 via the first shut-off valve 52 described later. It functions to maintain the air pressure at a preset specified pressure.

  A second pipe 48 (supply circuit) that branches from between the replicator 47 and the solenoid valve 41 in the first pipe 43 is controlled by a second regulator (pressure adjusting means) 49, a surge tank 50, and the control device. The first shut-off valve 52 is connected to each chamber 36a, 36b of the pneumatic barrel 36. The second regulator 49 functions to maintain the first chamber 36a at the specified pressure when the pressure in the first chamber changes with respect to the specified pressure during normal correction described later. The first shut-off valve 52 is maintained in an ON state during normal correction to communicate the air pressure supply source 42 to the first chamber 36a, and is switched to an OFF state by a control device in the event of an abnormality, which will be described later. The supply source 42 is set to communicate with the second chamber 36b. The first shut-off valve 52 is OFF until the adjustment device 34 is activated and the hydraulic oil in the air / oil tank 39 is filled into the hydraulic chamber 38a of the hydraulic barrel 38 and the oil chamber 31a of the hydraulic cylinder 31. It is controlled by the control device so that it is held in the state and then switched to the ON state.

  As shown in FIG. 3, the other end of the protective conduit 53, one end of which is connected to the hydraulic chamber 38a of the hydraulic barrel 38, connects the air / oil tank 39 and the hydraulic chamber 38a. Communication connection is established. A second shut-off valve 54 controlled by the control device is disposed in the protective conduit 53, and gate valves 55 are disposed in the protective conduit 53 before and after the second shut-off valve 54, respectively. Has been. The second shut-off valve 54 is held in an OFF state that closes the protective conduit 53 during normal correction, and prevents the hydraulic oil from returning from the hydraulic chamber 38a to the air / oil tank 39. Then, the protection line 53 is opened to allow the hydraulic oil to return from the hydraulic chamber 38a to the air / oil tank 39. The second shut-off valve 54 is held in the ON state when hydraulic oil is supplied to the hydraulic chamber 38a and the oil chamber 31a (described later), and is OFF when the pressure is increased by the air pressure after the hydraulic oil is supplied. Can be switched to. The connection position between the protective conduit 53 and the hydraulic chamber 38a is set to a position on the oil chamber side that is not blocked by the piston rod 37a during normal correction. In the embodiment, the solenoid valve 41, the first shut-off valve 52, and the second shut-off valve 54 constitute a protective device, and when a preset abnormal load is applied to the hydraulic cylinder 31, these valves 41, By switching between 52 and 54, the abnormal load is eliminated and the machine is protected.

  An operating rod 56 extending outward from the first chamber 36 a is disposed on the first chamber side of the piston 37, and a detection piece 56 a is provided on the operating rod 56. Further, three detection means 57, 58, 59 connected to the control device are arranged at positions close to the operation rod 56 and are separated from each other in the moving direction of the operation rod 56. The detection piece 56a is configured to be detectable. In the embodiment, the first detection unit 57, the second detection unit 58, and the third detection unit 59 are referred to in order from the upper side to the lower side in FIG.

  The first detection means 57 is in a state in which the hydraulic chamber 38a of the hydraulic barrel 38 and the oil chamber 31a of the hydraulic cylinder 31 are not filled with hydraulic oil, and the support member 28 is pulled up by the balance device 32 ( The detection piece 56a is positioned at the upper limit position). Further, the third detection means 59 detects the detection piece in a state (lower limit position) where the hydraulic oil filled in the hydraulic chamber 38a or the oil chamber 31a leaks and decreases until the predetermined hydraulic pressure cannot be applied to the hydraulic cylinder 31. When the third detection means 59 detects the detection piece 56a, the control device is configured to notify the correction machine 10 that an abnormality has occurred.

  The second detecting means 58 is positioned at a position to detect the detection piece 56a that moves as the upper straightening roll 12 moves up when an abnormal load preset during correction is applied to the upper straightening roll 12. When the second detection means 58 detects the detection piece 56a, the control device is configured to switch and control the solenoid valve 41, the first shut-off valve 52, and the second shut-off valve 54. Note that during normal correction, the piston 37 and the detection piece 56a are in a range facing the detection positions of the second detection means 58 and the third detection means 59 according to the load applied to the upper correction roll 12. The operating rod 56 is set to move up and down. That is, the adjustment device 34 allows the upper correction roll 12 to move up and down according to the load within the range of the separation distance between the detection positions of the second detection means 58 and the third detection means 59, An allowable range can be arbitrarily set by changing the separation distance.

(About guide bar facing)
Side openings 11a and 11a defined by the frame-shaped members 16 and 16 and the holding members 18 and 18 are formed on both sides of the main body 11 in the direction intersecting with the pass line PL. The holder 61 provided with the guide bar facing 60 which guides the to-be-corrected material W to 11a is each arrange | positioned so that rotation is possible. That is, as shown in FIG. 5, between the vertical frame members 19 and 19 in the frame-shaped members 16 and 16 facing each other in the material feeding direction, a support shaft 62 parallel to the pass line PL is provided for each vertical frame member 19. The holder 61 is rotatably arranged (only the upstream support shaft 62 is shown in FIG. 5).

  The holder 61 is formed with a horizontally extending attachment portion 61b on the correction space side (inside) of the plate member 61a extending substantially vertically at a guide position (see FIG. 4A) described later, As shown in a plan view in FIG. 5, a guide bar facing 60 having a horizontally long rectangular shape is detachably and replaceably disposed on the upper surface of the mounting portion 61b. The guide bar facing 60 is disposed so as to be movable and adjustable in the proximity / separation direction and up / down direction with respect to the pass line PL with respect to the mounting portion 61b. Even if the diameter of the material to be corrected W changes due to an order change or the like, the diameter It is comprised so that the guide bar facing 60 can be positioned in the suitable position according to this. Further, the plate member 61a closes a region where the guide bar facing 60 is disposed in the side opening 11a at the guide position, and roll lubrication water or the like supplied to the correction rolls 12 and 13 at the time of correction is scattered outside. Configured to prevent

  In the holder 61, as shown in FIG. 4, the bottom side of a pair of open / close cylinders (rotating means) 63, 63 that use fluid pressure such as hydraulic pressure or pneumatic pressure as a driving source is separated in the material feeding direction. The support shaft 62 is pivotally supported at a position outside the position where the support shaft 62 is disposed. The piston rod 63a of each open / close cylinder 63 is pivotally supported by the holding member 18 positioned on the lower side via a bracket 64 so as to be freely rotatable. That is, when the pair of opening and closing cylinders 63 and 63 are synchronously biased forward and backward, the holder 61 assumes a horizontal posture in which the guide bar facing 60 guides the material W to be corrected with the support shafts 62 and 62 as fulcrums. It is configured to rotate between a guide position (see FIG. 4 (a)) and a replacement position (see FIG. 4 (b)) facing the outside of the correction space S with the guide bar facing 60 facing upward. The

  Positioning members 65 each having a positioning hole 65a that opens to the corresponding vertical frame member side are provided on the end portions of the holder 61 that face the vertical frame members 19 and 19 of the frame member 16 respectively. . Further, the vertical frame members 19, 19 of each frame-shaped member 16 are moved forward and backward along the material feeding direction at positions corresponding to the corresponding positioning members 65 when the holder 61 faces the guide position. A stopper 66 is disposed so as to be movable. The stopper 66 is connected to a positioning cylinder 67 that uses a fluid pressure such as hydraulic pressure or pneumatic pressure provided on the vertical frame member 19 as a drive source, and the stopper 66 is biased forward and backward. Is configured to reciprocate between a fixed position inserted into the positioning hole 65a and a release position where the positioning hole 65a is released. 5 shows only the positioning member 65, the stopper 66, and the positioning cylinder 67 located on the downstream side.

(About roll changer)
The material carry-out device 15 arranged on the downstream side in the material feeding direction of the straightening machine 10 is arranged at a predetermined interval on the downstream side from the straightening machine 10 as shown in FIG. A roll exchanging device 68 for exchanging the straightening rolls 12 and 13 is disposed between the straightening machine 10 and the straightening machine 10. The roll exchanging device 68 includes a transport carriage 70 that is movable in the crossing direction along a pair of guide rails 69 and 69 that are separated in the material feeding direction and extend in a crossing direction with the pass line PL by a predetermined length. Prepare. The conveyance carriage 70 is moved to a correction position (FIG. 6 (a)) and an exchange position (separated in the crossing direction) by a moving device 71 including a motor as a driving source and an operation means including a ball screw and a nut operated by the motor. 6 (b)). In the embodiment, the straightening machine 10 and the roll exchanging device 68 constitute a straightening device.

  As shown in FIG. 6, a plurality of guide rollers 72 are rotatably arranged on the upper surface of the transport carriage 70 at predetermined intervals in the material feeding direction, and each guide roller 72 is driven to rotate by a drive motor (not shown). It has come to be. As shown in FIG. 6 (a), these guide rollers 72 align the material to be corrected W passed from the straightening machine 10 in the pass line when aligned with the pass line PL when the transport carriage 70 is positioned at the correction position. It is configured to be sent along the PL and delivered to the material carry-out device 15. In addition, on the upper surface of the transport carriage 70, a carry-in / cylinder 74 as a carry-in / out means for the correction rolls 12 and 13 is disposed at a position away from the guide roller group in the crossing direction. As shown in FIG. 6B, the carry-in / cylinder 74 is positioned so as to align with the pass line PL when the transport carriage 70 is positioned at the exchange position, and is placed at the tip of the piston rod 74a in the carry-in / cylinder 74. The connector 75 is detachably connected to a connecting portion (not shown) provided on the lower correction roll 13. Then, with the connecting tool 75 connected to the connecting portion, the carry-in / out cylinder 74 is forward / reversely biased so that the lower correction roll 13 can be pulled out and fed into the correction space S of the correction machine 10. .

  The upper straightening roll 12 is placed on the lower straightening roll 13 when the roll is replaced, and both the straightening rolls 12 and 13 are carried in and out at a time. Further, four rollers 76 are attached to the lower leveling roll 13 when the roll is replaced, and the wheels 76 are configured to move on rails 77 and 77 disposed on the transport carriage 70. The mounting position of the wheel 76 is set to an appropriate position that does not hinder the rotation of the lower straightening roll 13 such as a housing that holds the rotation shaft of the lower straightening roll 13.

(Effects of Example)
Next, the operation of the correction device according to the above-described embodiment will be described.

  In a state before starting the adjusting device 34, as shown in FIG. 3, the piston 37 of the pressure increasing cylinder 35 faces the upper limit position, and the detection piece 56a of the operating rod 56 is detected by the first detecting means 57. Facing the position. The hydraulic chamber 31a of the hydraulic cylinder 31 and the hydraulic chamber 38a of the hydraulic barrel 38 are not filled with hydraulic oil, and the upper correction roll 12 is configured such that the support member 28 is moved up and down by the balance device 32. It is approaching the upper limit position by being pulled up so as to be close to. Further, the solenoid valve 41 and the second shut-off valve 54 are in the ON state, and the first shut-off valve 52 is in the OFF state. When the adjustment device 34 is started from this state, the compressed air discharged from the air pressure supply source 42 and maintained at a constant pressure via the first regulator 46 enters the air reservoir 39b in the air / oil tank 39. Supplied via the solenoid valve 41. As a result, the hydraulic oil stored in the air / oil tank 39 is supplied to the hydraulic chamber 38a in the pressure-increasing cylinder 35 and is supplied from the hydraulic chamber 38a to the oil chamber 31a of the hydraulic cylinder 31. The entire area from the chamber 38a to the oil chamber 31a is filled with hydraulic oil. Since the air pressure supplied to the air / oil tank 39 is applied to the hydraulic oil filled in the hydraulic chamber 38a and the oil chamber 31a, the piston of the hydraulic cylinder 31 is operated by the air pressure, and the support member 28 descends by a predetermined height with respect to the elevating member 26. At this time, the first shut-off valve 52 is maintained in the OFF state, and the compressed air supplied to the first shut-off valve 52 via the second regulator 49 and the surge tank 50 is in the second chamber of the pressure increasing cylinder 35. The piston rod 37a is held at an upper limit position that does not block the connection position between the connection conduit 40 and the hydraulic chamber 38a.

  After a lapse of a predetermined time (time when hydraulic oil is filled in the hydraulic chamber 38a and the oil chamber 31a) from the start of the adjusting device 34, the first shut-off valve 52 is switched to the ON state by the control device, and the pneumatic pressure The compressed air supplied from the supply source 42 is supplied to the first chamber 36 a of the pressure increasing cylinder 35. As a result, the piston 37 is pushed, and the piston rod 37a descends (forwards) the hydraulic chamber 38a, and the hydraulic pressure in the oil chamber 31a is increased. Then, after the second detection means 58 detects the detection piece 56a that moves as the piston 37 moves, the detection piece 56a is further lowered, and the detection piece 56a is between the detection positions of the second detection means 58 and the third detection means 59. At the same time, by switching the second shut-off valve 54 to the OFF state, the first chamber 36a reaches a preset specified pressure, and the preparation of the adjusting device 34 is completed.

  After the preparation of the adjustment device 34 is completed, the elevating member 26 is lowered by the reduction device 27, and the gap between the upper and lower correction rolls 12 and 13 is adjusted according to the diameter of the target material W to be corrected. The gap between the straightening rolls 12 and 13 at this time is a predetermined value even in a portion of the smallest diameter that can be handled by the straightening machine 10 in consideration of the variation in the diameter of the material W to be corrected as described above. It is set to a gap where a rolling force can be applied. Further, the external drive means is driven to rotate the upper and lower correction rolls 12 and 13 in opposite directions. In this state, the to-be-corrected material W passed through the correction space S of the main body 11 through the material carry-in device 14 is straightened by passing between the correction rolls 12 and 13, and then the main body. 11, the material W to be corrected is sent to the downstream side through the guide roller 72 on the transport carriage 70 positioned at the correction position, and delivered to the material carry-out device 15 (see FIG. 6 (a)).

  Further, as shown in FIGS. 4 (a) and 5, the guide bar facings 60, 60 disposed on the holders 61, 61 face each other across the pass line PL of the material W to be corrected. The movement of the material to be straightened W passing between the straightening rolls 12 and 13 is guided while restricting the lateral vibration. Each holder 61 is firmly fixed and held by the stoppers 66 and 66 being inserted into the positioning holes 65a and 65a of the positioning members 65 and 65 at the guide position shown in FIG. Stable guidance of the material to be corrected W by the guide bar facings 60, 60 is achieved.

  As shown in FIGS. 1 and 2, the main body 11 of the straightening machine 10 is constructed by connecting a pair of the frame-like members 16 and 16 with a connecting member 17, so that the main body itself has high rigidity and is to be corrected. Generation of vibration due to reaction force acting through the correction rolls 12 and 13 and the guide bar facings 60 and 60 during correction of the material W can be suppressed, and high-precision correction can be performed. Further, since the rigidity can be increased without increasing the dimensions of the members constituting the main body 11, the correction machine 10 can be reduced in size and the installation space can be reduced. Furthermore, by disposing the pair of frame-shaped members 16 and 16 apart from each other in the direction along the pass line PL, the main body 11 is interposed via the correction rolls 12 and 13 and the guide bar facings 60 and 60 when the material to be corrected W is corrected. In particular, the rigidity against torsional reaction force acting on can be increased, and more accurate correction can be performed. In addition, since the frame-shaped member 16 of the embodiment is formed in a rectangular frame shape, the rigidity against the torsional reaction force generated when the material to be corrected W that passes through the opening 16a of the frame-shaped member 16 is corrected is further increased. Can do.

  Here, the diameter of the material to be corrected W supplied to the straightening machine 10 is rarely uniform in the longitudinal direction, and the diameter is different in the longitudinal direction. And when the diameter dimension of the to-be-corrected material W changes with respect to the clearance dimension preset in the said correction | amendment rolls 12 and 13, predetermined | prescribed rolling force is applied to the to-be-corrected material W which passes both the correction | amendment rolls 12 and 13 May not be applied, or an excessive reduction force may be applied, and accurate correction may not be possible. For example, when the diameter of the material to be corrected W is small, the material to be corrected W slips due to the reduction of the rolling force applied from the correction rolls 12 and 13. On the other hand, when the diameter of the material to be straightened W is large, the rolling force applied from the straightening rolls 12 and 13 becomes excessively large, which may cause a large mechanical vibration, or the material to be straightened W is more than necessary. There is a risk of reducing the diameter. Note that the material to be straightened W may have an oval shape instead of a circular cross section, and when the oval shaped material to be straightened W is thus straightened, it passes between the straightening rolls 12 and 13 while rotating. Since the rolling force applied from both the correction rolls 12 and 13 is different between the long axis portion and the short axis portion of the material to be corrected W, the above-described problem may be caused.

  However, in the straightening machine 10 of the embodiment, the adjusting device 34 allows the upper straightening roll 12 to move up and down according to the change in the load applied to the upper straightening roll 12, and the material W to be straightened is always in the optimum condition. Can be corrected with high accuracy. Specifically, when the diameter of the material to be corrected W changes in the direction of increasing, the load applied to the upper correction roll 12 from the material to be corrected W increases, and the load increases via the hydraulic cylinder 31 according to this load. The hydraulic pressure applied to the pressure cylinder 35 increases and the piston 37 is pushed up. As a result, the volume of the first chamber 36a of the pneumatic barrel 36 is reduced, so that the internal pressure (air pressure) of the first chamber 36a is increased. At this time, the second regulator 49 causes the internal pressure in the first chamber 36a to increase. Compressed air in the second pipe 48 is discharged so that the pressure of the upper straightening roll 12 is constant, and while allowing the upper straightening roll 12 to move upward, the reduction force applied from the upper straightening roll 12 to the material W to be corrected is Maintained constant. Further, when the diameter of the material to be corrected W changes in the direction of decreasing, the load applied to the upper correction roll 12 from the material to be corrected W decreases, and the pressure increasing cylinder 35 is connected via the hydraulic cylinder 31 according to this load. The hydraulic pressure applied to the pressure decreases, and the piston 37 is pushed down by the air pressure. As a result, the volume of the first chamber 36a of the pneumatic barrel 36 is increased and the internal pressure (air pressure) of the first chamber 36a is decreased, but a constant air pressure is supplied to the first chamber 36a. Therefore, the pressure in the first chamber 36a returns to the original pressure (predetermined preset pressure), and the upper straightening roll 12 moves downward until it presses against the material to be straightened W at a constant pressure. The rolling force applied from 12 to the material W to be corrected is kept constant. That is, by allowing the upper correction roll 12 to move up and down according to the change in the diameter of the material to be corrected W while maintaining a constant reduction force applied from the upper correction roll 12 to the material to be corrected W, Highly accurate correction can always be performed.

  Further, since the pressure increasing cylinder 35 using compressed air is used for the adjusting device 34, the responsiveness to the change in the diameter of the material to be corrected W is high, and more accurate correction can be performed.

  The change in the diameter of the material to be straightened W is large, and the load applied to the upper straightening roll 12 causes the piston 37 of the pressure-increasing cylinder 35 to be greatly pushed up via the hydraulic cylinder 31, and the detection piece 56a is the second detection means. If detected at 58, the controller determines that an abnormal load has been applied to the upper straightening roll 12 (hydraulic cylinder 31) and activates the protective device. That is, the second shut-off valve 54 is switched to the ON state, the hydraulic chamber 38a of the hydraulic barrel 38 and the connection pipe line 40 communicate with each other through the protective pipe line 53, and the upper side from the material W to be corrected The hydraulic oil pushed back from the oil chamber 31a of the hydraulic cylinder 31 to the hydraulic chamber 38a of the hydraulic barrel 38 by a load applied through the straightening roll 12 is supplied to the air / oil tank via the protective conduit 53 and the second shutoff valve 54. Returned to 39. The solenoid valve 41 is switched to the OFF state, and the compressed air in the air / oil tank 39 is discharged to the outside through the solenoid valve 41 in response to the pressure increase due to the hydraulic oil returned to the air / oil tank 39. Thus, the return of the hydraulic oil from the hydraulic chamber 38a to the air / oil tank 39 is smoothly performed. The first shut-off valve 52 is switched to the OFF state, and the compressed air from the pneumatic supply source 42 is supplied to the second chamber 36b of the pneumatic barrel 36 through the first shut-off valve 52. As a result, the piston 37 quickly rises (the piston rod 37a moves backward from the hydraulic chamber 38a), and an overload is prevented from being applied to the pressure increasing cylinder 35.

  When the piston 37 is raised to the upper limit position where the detection piece 56a is detected by the first detection means 57, the air pressure from the pressure increasing cylinder 35 is not applied to the hydraulic cylinder 31, and the support The member 28, that is, the upper correction roll 12 is pulled up by the action of the balance device 32 and moves away from the lower correction roll 13. That is, the gap between the upper and lower straightening rolls 12 and 13 is widened to prevent an excessive load from being applied to the straightening rolls 12 and 13 and other mechanisms, thereby protecting the apparatus.

  Here, during the straightening operation, the hydraulic oil filled in the hydraulic chamber 38a and the oil chamber 31a may leak. In this case, the piston 37 descends according to the amount of decrease in the hydraulic oil, and the pressure-increasing cylinder 35. The pressure applied to the hydraulic cylinder 31 is maintained constant (regulated pressure). Then, when the piston 37 that descends as the hydraulic oil decreases reaches the lower limit position, the third detection means 59 detects the detection piece 56a, and at this time, the control device indicates that an abnormality has occurred in the straightening machine 10. Inform. Accordingly, it is possible to prevent the correction from being continued in a state in which a constant pressure (regulation pressure) cannot be applied from the pressure increasing cylinder 35 to the hydraulic cylinder 31.

  When the guide surface of the guide bar facing 60 is worn by the correction work described above and the guide function is impaired, it is necessary to replace the guide bar facing 60 with a new one. In this case, first, the positioning cylinders 67 positioned on the upstream side and the downstream side of the holder 61 are operated, and the stoppers 66 inserted into the positioning holes 65a of the corresponding positioning members 65 of the holder 61 are respectively set to the release positions. Moving. As a result, the holder 61 is released from the fixed state and can be opened.

  Next, the pair of opening / closing cylinders 63 and 63 are urged, and the holder 61 is rotated in the direction of separating the guide bar facing 60 from the correction space S with the support shafts 62 and 62 as fulcrums. As a result, as shown in FIG. 4B, the guide bar facing 60 disposed in the holder 61 reaches the replacement position where the guide bar facing 60 is exposed to the outside of the main body of the straightening machine 10. Since the guide bar facing 60 is in an upward posture on the upper side of the holder 61 at this replacement position, the guide bar facing 60 can be easily exchanged with respect to the holder 61.

  Here, when straightening by the straightening machine 10, roll lubricating water is supplied to the straightening rolls 12 and 13, and sludge-like dirt mixed with the lubricating water and the scale generated from the material to be straightened W is guided bar facing 60, It adheres to the inner surface of the plate member 61a of the holder 61. As described above, the holder 61 of the embodiment is configured to rotate with the support shafts 62 and 62 parallel to the pass line PL as fulcrums. In the state where the holder 61 is rotated to the replacement position, FIG. As shown in FIG. b), the plate member 61a is inclined upward as it is separated from the support shaft side. Therefore, sludge-like dirt adhering to the inner surface of the plate member 61a and the guide bar facing 60 is removed from the holder 61. When it is opened, it is prevented from being dropped and soiled outside the straightening machine 10.

  Further, since the holder 61 is configured to rotate in a vertical plane, the separation distance (the width dimension of the side opening 11a) of the frame-like members 16 and 16 that are separated in the material feeding direction is the holder 61. It is sufficient that the width is slightly larger than the width dimension, and the rigidity of the main body 11 can be increased by bringing the frame-shaped members 16 and 16 closer to each other. That is, one end of the holder in the width direction (upstream or downstream) is pivotally supported on a vertically extending shaft as in the prior art, and the guide bar facing is corrected by rotating the holder in a horizontal plane. In the configuration for taking in and out of the space, both frame-shaped members must be separated by a distance that does not interfere with the guide bar facing, but in this case, the holder 61 is rotated in the vertical plane as in the embodiment. For example, the distance between the two frame-shaped members 16, 16 can be shortened. Accordingly, the rigidity of the main body 11 is increased, and it is possible to perform high-accuracy correction by suppressing generation of vibration during correction, and it is possible to reduce the size of the correction machine 10 and reduce the installation space. It becomes.

  Further, in a state where the holder 61 is rotated to the replacement position, a portion where the holder 61 extends outward from the main body 11 of the straightening machine 10 is small, and an operator moves when the guide bar facing 60 is exchanged. The range is small and workability is improved. Moreover, there are few blind spots caused by the holder 61 rotated to the replacement position, and the safety of the work is improved.

  When returning the holder 61 whose guide bar facing 60 has been replaced to the guide position, the holder 61 rotates about the support shafts 62 and 62 by reversely biasing the opening and closing cylinders 63 and 63. The guide bar facing 60 is in a horizontal posture. Further, each positioning cylinder 67 is reversely biased to move the stopper 66 from the release position to the fixed position, so that the stopper 66 is inserted into the positioning hole 65a of the corresponding positioning member 65 (see FIG. 5). The holder 61 is firmly fixed and held at the guide position.

  When the straightening machine 10 is operated for a long period of time, the surfaces of the straightening rolls 12 and 13 are damaged, scales or the like are attached due to baking, or local wear occurs. The correction material W cannot be corrected accurately. In this case, the correction rolls 12 and 13 need to be repaired such as polishing or cutting, or replaced with new rolls. As described above, when the correction rolls 12 and 13 are repaired or replaced, both the correction rolls 12 and 13 are taken out from the main body 11 using the roll changing device 68.

  That is, when the straightening rolls 12 and 13 are replaced, as shown in FIG. 6 (a), the corresponding straightening rolls 12 and 13 are turned by the angle adjusting device, and the respective rotation axes are set to pass lines PL. Position in parallel with. Then, the upper straightening roll 12 is lowered using the reduction device 27 and placed on the lower straightening roll 13, and the straightening rolls 12 and 13 are removed from the bearings 25 and 30 of the upper and lower rotary tables 24 and 29. Further, the wheels 76 are attached to the four places of the lower correction roll 13.

  Next, the transport carriage 70 is moved in the crossing direction by the moving device 71, and as shown in FIG. 6B, the transport carriage 70 is positioned at an exchange position where the carry-in / out cylinder 74 is aligned with the pass line PL. The piston rod 74a of the carry-in / out cylinder 74 is extended, and the connecting tool 75 disposed at the tip is connected to the connecting portion of the lower correction roll 13 on which the upper correction roll 12 is placed. In this state, the carry-in / cylinder 74 is urged and the piston rod 74a is drawn into the barrel, whereby both the correction rolls 12 and 13 are drawn out from the correction space S onto the transport carriage 70. At this time, when the wheels 76 and 76 move on the rails 77 and 77 provided on the transport carriage 70, both the correction rolls 12 and 13 are stably pulled out.

  When the correction rolls 12, 13 pulled out to the transport carriage 70 are transferred to another place for repair, or the new correction rolls 12, 13 are attached to the main body 11 of the correction machine 10, The reverse process of the above-described removal is performed. That is, the wheels 76 and 76 of the lower correction roll 13 on which the upper correction roll 12 is placed with the rotation axis aligned with the pass line PL on the rails 77 and 77 of the transport carriage 70 positioned at the replacement position. Is placed. After the connecting tool 75 is connected to the connecting portion of the lower straightening roll 13, the piston rod 74a of the carry-in / out cylinder 74 is extended to be guided by the rails 77 and 77 so that both the straightening rolls 12 and 13 are straightened. 10 correction spaces S are sent.

  The upper and lower straightening rolls 12 and 13 fed into the straightening space S are attached to the bearings 25 and 30 of the corresponding rotary tables 24 and 29, the connecting tool 75 is removed from the connecting portion, and the lower straightening roll 13 removes the wheels. By removing 76, the replacement work of the correction rolls 12 and 13 is completed. Further, by moving the transport carriage 70 from the replacement position to the correction position by the moving device 71, the guide roller 72 is aligned with the pass line PL, and the correction work can be performed.

  In the embodiment, the straightening rolls 12 and 13 are configured to be drawn out and fed into the main body 11 of the straightening machine 10 along the pass line PL. What is necessary is just to turn the connection part 12a, 13a of the correction | amendment rolls 12 and 13 extended from 16a and 16a to the position along the pass line PL at the time of replacement | exchange. That is, the frame-shaped member 16 constituting the main body 11 does not interfere with the rotation of the correction rolls 12 and 13, and the frame-shaped member 16 can be disposed close to the correction rolls 12 and 13. Therefore, the rigidity of the main body 11 can be increased, and the occurrence of vibrations and the like during correction can be suppressed to perform correction with high accuracy. Moreover, since the main body 11 can be reduced in size, the installation space for the straightening machine 10 can be reduced.

[Example of change]
The present application is not limited to the configuration of the above-described embodiment, and other configurations can be appropriately employed.
1. In the embodiment, the case where a pair of frame-like members are connected by a connecting member has been described, but the number of frame-like members may be three or more. Moreover, the structure which arrange | positions several frame-shaped members side by side without providing a clearance gap between adjacent frame-shaped members, and mutually connects with a connection member can be employ | adopted.
2. In the embodiment, the holding member is interposed between the pair of frame-like members so as to hold the interval. However, both end portions in the longitudinal direction of the connecting member are provided with stepped shapes or flanges, and the frame is formed by the connecting member. The structure which hold | maintains the space | interval of a shape member can be employ | adopted, and a holding member can be abbreviate | omitted in this case.
3. In the embodiment, the four corners of the frame-like member are connected by the connecting member, but the arrangement position of the connecting member may be a position where a plurality of frame-like members can be firmly fixed. In the embodiment, two connecting members are provided in each part, but one connecting member or three or more connecting members may be provided.
4). In the embodiment, the frame-like member is hollow (in the shape of a square cylinder), but it may be solid.
5). In the embodiment, the frame-like members constituting the main body are arranged apart from each other in the material feeding direction. However, it is possible to adopt a configuration in which the frame-like members are arranged apart from each other in the intersecting direction with the pass line.
6). In the embodiment, a rectangular frame-shaped frame-shaped member is used. However, the shape of the frame-shaped member is not limited to this, and other shapes such as polygons and upper and lower ends formed in an arc shape are used. Can be adopted as appropriate.
7). In the embodiment, the main body of the straightening machine is composed of a plurality of frame-like members, but a configuration in which a pair of frames that are separated from each other in the vertical direction are connected by four columns.
8). In the embodiment, the adjustment apparatus using a pressure increasing cylinder using both compressed air and hydraulic pressure has been described. However, a pressure increasing cylinder using only hydraulic pressure can be used without using compressed air.
9. In the embodiment, the case where the roll exchanging device is arranged on the downstream side of the straightening machine has been described. However, a configuration in which the roll exchanging device is arranged on the upstream side of the straightening machine can be adopted.
10. In the embodiment, the case where a carry-in / cylinder is used as the carry-in / out means has been described. Any means can be used.
11. In the embodiment, the case where the straightening roll is pulled out or sent in the direction along the pass line with respect to the main body when the straightening roll is exchanged or the like has been described. Can be adopted.
12 In the embodiment, the case where the opening / closing cylinder is used as the rotating means of the holder has been described, but the holder is rotated between the guide position and the replacement position, such as a device using a mechanism such as a motor and a rack-pinion. Any means can be used.
13. In the embodiment, the holder is described as rotating in the vertical plane with the support shaft along the pass line as a fulcrum, but one end in the width direction (upstream side or downstream side) of the holder extends to the vertically extending shaft. A configuration may be adopted in which the holder is pivotally supported and the holder is rotated in a horizontal plane.

It is a general | schematic longitudinal side view which shows the correction machine which concerns on an Example. It is a general | schematic cross-sectional top view which shows the correction machine which concerns on an Example. It is a schematic block diagram which shows the adjustment apparatus which concerns on an Example. BRIEF DESCRIPTION OF THE DRAWINGS It is a general | schematic longitudinal side view which shows the principal part of the straightening machine which concerns on an Example, (a) shows the state which positioned the holder of the guide bar facing to a guide position, (b) shows the holder replacement position of a guide bar facing Shows the positioned state. It is a general | schematic cross-sectional top view of the corrector which concerns on an Example, Comprising: The state which positioned the holder of the guide bar facing to the guide position is shown. BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic block diagram which shows the roll replacement | exchange apparatus which concerns on an Example, (a) shows the state which positioned the conveyance trolley in the correction position, (b) pulled out the correction | amendment roll on the conveyance trolley positioned in the replacement position. Indicates the state.

Explanation of symbols

10 straightening machine, 11 body, 12 upper straightening roll (upper straightening roll)
13 Lower correction roll (lower correction roll), 16 Frame member, 17 Connecting member 70 Carriage carriage, 71 Moving device, 72 Guide roller 74 Carry-in / cylinder (carrying-in / out means), W material to be corrected, PL pass line

Claims (3)

A pair of straightening rolls (12, 13) positioned above and below the pass line (PL) of the material to be straightened (W) and intersecting each other at a predetermined angle with respect to the pass line (PL) are the main body (11 ) And a straightening machine (10) that is detachably and rotatably supported, and passes the material to be straightened (W) fed along the pass line (PL) between both straightening rolls (12, 13). In the correction device for correcting the material (W),
On the upstream side or downstream side in the material feeding direction of the main body (11), a transport carriage (70) disposed movably in the direction intersecting the pass line (PL),
A moving device (71) for moving the transport carriage (70) between a correction position and an exchange position separated in the crossing direction;
It is rotatably arranged on the upper surface of the transport carriage (70), and is aligned with the pass line (PL) when the transport carriage (70) is positioned at the correction position, and is covered along the pass line (PL). A plurality of guide rollers (72) capable of feeding the straightening material (W);
The path of the correction rolls (12, 13) from the main body (11) to the transport carriage (70) with the transport carriage (70) positioned at the replacement position, disposed on the upper surface of the transport carriage (70). Straightening characterized by comprising a pull-in / out means (74) capable of performing drawing in the direction along the line (PL) and feeding in the direction along the pass line (PL) from the transport carriage (70) to the main body (11). apparatus.   The main body (11) is configured by connecting and fixing a pair of frame-shaped members (16, 16) spaced apart in the direction along or intersecting the pass line (PL) via connecting members (17) at a plurality of locations. The correction apparatus according to claim 1. A pair of straightening rolls (12, 13) positioned above and below the pass line (PL) of the material to be straightened (W) and intersecting each other at a predetermined angle with respect to the pass line (PL) are the main body (11 ) And a straightening machine (10) that is detachably and rotatably supported, and passes the material to be straightened (W) fed along the pass line (PL) between both straightening rolls (12, 13). In the correction device for correcting the material (W),
The upper correction roll (12) is placed on the lower correction roll (13) while the pair of correction rolls (12, 13) is swung to a position where the rotation axis is along the pass line (PL). And
A plurality of guide rollers (72) disposed on the upper surface of the transport carriage (70) are disposed on the upper surface of the transport carriage (70) on the upstream side or the downstream side in the material feeding direction in the main body (11) ( The guide roller (72) moves from the correction position aligned with (PL) to the replacement position separated from the pass line (PL),
The straightening rolls (12, 13) separated from the main body (11) are conveyed along the pass line (PL) from the main body (11) by the loading / unloading means (74) disposed in the conveying cart (70). Pull on the dolly (70),
The corrected correction roll (12, 13) or new correction roll (12, 13) placed on the transport carriage (70) is moved along the pass line (PL) by the carry-in / out means (74). A method for carrying in and out of the correction roll, which is fed into the main body (11).

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