JPH07303922A - Straightener - Google Patents

Abstract

PURPOSE:To improve maintenance workability by moving one straightener roll close to or away from the other straightener roll, adjusting an angle against a pass line through the horizontal rotation of one straightener roll and thereby simplifying a mechanism for adjusting the reduction and angle of straightener rolls. CONSTITUTION:An adjusting cylinder 69 is energized in the angle adjusting device 89 of an upper straightener roll 29; and by horizontally moving a rack 68, a ring body 65 and a piston 51 are rotated through a sector gear 67 engaged with the rack. The upper straightener roll 29 is horizontally turned by the rotation of the piston 51, and is inclined at a required angle against the pass line of a material to be straightened. Similarly, a lower straightener roll 31 is horizontally turned by an angle adjusting device 90, and is inclined at a required angle against the pass line of the material to be straightened. Then, a cylinder 47 is energized in a required direction; by lowering its piston 51, the upper straightener roll 29 is made close to the lower straightener roll 31; and an opening between both rolls 29, 31 is set in accordance with the material to be straigthened.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a straightening machine for straightening a bent material to be straightened. More specifically, it simplifies a mechanism for adjusting a rolling and an angle according to the size of the material. The present invention relates to a straightening machine that can easily perform maintenance such as replacement of straightening rolls and can suppress generation of vibration and noise.

[0002]

2. Description of the Related Art For example, as a device for correcting the bending generated when processing a material to be straightened such as a round bar or a steel pipe into a round bar or a steel pipe having a desired size, shape and mechanical properties, for example, a concave surface type A straightening machine using a pair of straightening rolls formed in the shape of a drum is preferably used. The schematic structure of this straightening machine will be described with reference to FIG. 9. The lower rotary table 1 is provided on the upper surface of the lower frame 11 of the straightening machine 10.
2 is arranged so as to be horizontally rotatable, and the table 12 is adapted to be rotated by an angle adjusting device 13 arranged on the lower frame 11. Further, a lower straightening roll 15 is rotatably disposed on the upper surface of the lower rotary table 12 via bearings 14, 14, and the roll 15 is rotated by an external drive means via a universal joint (neither is shown). It is configured to be driven.

Posts (tie rods) 16 are erected at the four corners of the lower frame 11, and an upper frame 17 is positioned and fixed to the upper ends of these four posts 16 via bolts 18. Further, an intermediate plate 19 is slidably disposed on the four columns 16 facing between the lower frame 11 and the upper frame 17, and the intermediate plate 19 includes a plurality of rolling screws disposed on the upper frame 17. A rolling down device 20
It is configured to be moved up and down by. An upper rotary table 21 is pivotally supported on the intermediate plate 19 so as to be horizontally rotatable, and the upper rotary table 21 is rotated by an angle adjusting device 22 arranged on the intermediate plate 19. Then, an upper straightening roll 23 is rotatably disposed on the lower surface of the upper rotary table 21 via bearings 24, 24, and the roll 23 is rotated by an external drive means via a universal joint (neither is shown). It is configured to be driven.

When the material to be straightened is straightened by the straightening machine 10, first of all, the upper and lower straightening rolls 23, 15 are used.
Are swung by the corresponding angle adjusting devices 22 and 13, and are positioned so as to intersect each other at a predetermined inclination angle with respect to the pass line of the material to be straightened. Next, the intermediate plate 19 is adjusted up and down through the rolling down device 20 arranged on the upper frame 17 to define a required gap between the lower straightening roll 15 and the upper straightening roll 23.
(Adjust the reduction). Then, both of the straightening rolls 15 and 23 are rotationally driven in opposite directions by an external driving means, and the material to be straightened is passed between the straightening rolls 15 and 23 to straighten the material.

[0005]

In the conventional straightening machine 10 described above, the intermediate plate 19 having the upper straightening roll 23 is provided.
Is arranged so as to be able to move up and down, and the intermediate plate 19 is moved up and down by a pressure reducing device 20 provided on the upper frame 17, whereby the reduction is adjusted. That is, since it is necessary to separately dispose the intermediate plate 19 between the upper and lower frames 17 and 11 and to connect the plate 19 and the pressure reducing device 20, there is a problem that the mechanism becomes complicated. Further, since a screw down is used as the screw down device 20, it is necessary to dispose the cylinder 25 on the upper frame 17 in order to prevent the backlash of the screw, and it is pointed out that the number of parts increases.

[0006] The surface of the straightening rolls 15 and 23 is scratched when the material to be straightened is bitten or scales are attached by baking, which causes the surface of the material to be straightened to be scratched. In addition, there is a problem that the abutting portions of the straightening rolls 15 and 23 with the material to be straightened are locally worn, and if left unattended, accurate straightening cannot be achieved with time. Therefore, the surfaces of the straightening rolls 15 and 23 are regularly ground or refurbished so that an appropriate roll surface is always maintained and accurate straightening is performed. Further, since the straightening machine 10 uses the roll lubricating water, the lubricating water and the scale generated from the material to be straightened are mixed to form a sludge, which adheres to each component, which causes wear and failure. Need regular cleaning and inspection.

In this case, the straightening roll 15,
It is extremely difficult to carry out maintenance such as polishing and refurbishing of 23 or cleaning / inspection of each part in the sandwiching device. Further, in the straightening machine 10, it is necessary to replace with a straightening roll of a dedicated standard according to the material to be straightened as the straightening order is changed. Therefore, with the straightening rolls 15 and 23 separated from the external drive means, the rotary table 12 and
The straightening rolls 15 and 23 are removed from 21 and maintenance is performed outside. However, the straightening roll 15,
The work for removing 23 has to be performed in a sandwiching space in the apparatus, and thus this work is time-consuming and complicated. In addition, the reduction device 20 and the angle adjusting devices 13 and 22
The maintenance of 1 still had to be done in the pinching device.

The upper and lower frames 1 are made up of the four columns 16
In the structure in which the bolts 1 and 17 are fixed, the bolts 18 are heated and thermally expanded, so that the frames 11 and 17 and the support 1
It is generally practiced to fix the components 8 and 8 so that there is no play and to improve the mechanical rigidity to suppress the occurrence of vibrations during correction. However, with this method, it is not possible to eliminate the looseness of the connection between the intermediate frame 19 on which the upper straightening roll 23 is supported and each of the columns 16, and the frame 1
It is pointed out that the generation of vibration 9 causes a defect that accurate correction cannot be achieved. Further, the surroundings of the straightening space exposed by the upper and lower straightening rolls 23 and 15 are not hermetically sealed, and noise generated during straightening leaks to the outside from between the columns 16 and 16 adjacent to each other, resulting in a poor working environment for the worker. Was becoming.

Further, the upper and lower straightening rolls 23, 15
Since all of them are connected to the external drive means through a universal joint, the installation area of the entire apparatus is large, and there is a drawback that the space in the factory cannot be effectively used.

[0010]

SUMMARY OF THE INVENTION The present invention has been proposed in view of the above-mentioned drawbacks inherent in the conventional straightening machine described above, and has been proposed in order to suitably solve the drawbacks. It is an object of the present invention to provide a novel straightening machine that simplifies the maintenance and improves the maintainability, and at the same time suppresses the generation of vibration and noise.

[0011]

In order to overcome the above problems and preferably achieve the intended purpose, the present invention is located above and below the path line of the material to be straightened and has a predetermined distance from the path line. A straightening machine having a pair of straightening rolls supported so as to intersect each other at an angle, the barrel being vertically arranged in the straightening machine main body is provided with a piston that can be raised and lowered and rotated, and is supplied from an external supply source. A cylinder that raises and lowers a piston by the supply of hydraulic pressure, a rod that is protrudingly provided on the piston and that rotatably supports the one correction roll, and a rod that is integrally rotatable with the rod and is allowed to move in the axial direction. Consisting of an externally fitted ring body and an angle adjusting means for rotating the ring body in the forward and reverse directions, and by moving the piston up and down, one straightening roll with respect to the other straightening roll. Near · Causes moved away, by rotating the ring member in the forward and reverse directions, characterized by being configured to adjust the angle one of the straightening rolls relative to the horizontal pivot is allowed by the pass line.

In order to preferably achieve the above-mentioned object, another invention of the present application is positioned above and below the path line of the material to be straightened and supported so as to intersect each other at a predetermined angle with respect to the path line. A straightening machine provided with a pair of straightening rolls, wherein an upper carrier and a lower carrier which are removably positioned and fixed to a straightening machine main body, and a piston which can be raised and lowered and rotated freely on a barrel vertically arranged on the upper carrier. A cylinder for moving the piston up and down by the supply of hydraulic pressure from an external supply source; a lower rod protruding from the lower side of the piston and rotatably supporting the upper straightening roll;
An upper rod provided with an upper drive motor protruding from the upper side of the piston and connected to the upper straightening roll via a power transmission means, and an upper rod that is rotatable integrally with the upper rod in the axial direction. A ring body externally fitted while allowing movement, an angle adjusting means for rotating the ring body in forward and reverse directions, and an angle adjusting means for rotating the ring body, and a rotatably arranged on the lower carrier. A support column that extends vertically and rotatably supports the lower straightening roll at its upper end, and has a lower drive motor connected to the lower straightening roll at its lower end via a power transmission unit that also functions as a speed reducer. An angle adjustment for rotating the ring body in forward and reverse directions, which is disposed on the lower carrier and a ring body that is externally fitted in a state in which the support column is integrally rotatable and allows axial movement. It is composed of means and That.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A straightening machine according to the present invention will be described below with reference to the accompanying drawings with reference to preferred embodiments.
1 is a vertical sectional side view of a straightening machine according to an embodiment, FIG. 2 is a plan view of a straightening machine according to an embodiment, and FIG. 3 is a schematic perspective view showing an appearance of a straightening machine according to the embodiment.

(Regarding Overall Structure) As shown in FIGS. 1 and 3, a main body 27 of the straightening machine 26 is formed in a box shape, and the main body 27 is provided above a pit 28 of a required depth formed on the factory floor. It is arranged. An upper unit 30 having an upper straightening roll 29 and a lower unit 32 having a lower straightening roll 31 are detachably arranged on the main body 27, and the rolls 29 and 31 are defined inside the main body 27. In the straightening space 33, they are positioned in a vertical relationship with the pass line of the material to be straightened in between. Also, the front plate 34 of the main body 27
An inlet guide 36 and an outlet guide 37 corresponding to the pass line of the material to be straightened are correspondingly arranged on the rear plate 35,
The material to be straightened, which has passed through the straightening space 33 from the inlet guide 36, is straightened out to the outside through the outlet guide 37 after being straightened as required by the straightening rolls 29 and 31. Furthermore,
Openings (not shown) are formed in the left and right side plates 38, 38 of the main body 27, and each opening is opened and closed by a door body 39 arranged in the side plate 38. In addition, each door body 3
A guide bar facing (not shown) for guiding the material to be straightened is provided on the inner surface of 9.

(Regarding the Upper Unit) The upper unit 30 is removably positioned and fixed to the top plate 40 of the main body 27, and the upper straightening roll 29 is disposed on the unit 30.
Facing the correction space 33. Upper unit 30
Includes a disc-shaped upper carrier 41, and the carrier 41
As shown in FIG. 4, the stepped portion 41a projecting from the lower surface is mounted on the top plate 40 with the stepped portion 41a fitted into a through hole 40a formed at the center of the top plate 40. As shown in FIG. 2, a plurality of (three in the embodiment) positioning members 4 are provided on the upper surface of the upper carrier 41.
2 are arranged at required intervals in the circumferential direction, and a taper 42a is formed on the upper surface of each member 42 in the outer circumferential direction of the upper carrier 41 so as to gradually incline downward (see FIG. 4). A hydraulic cylinder 43 is arranged on the top surface of the top plate 40 corresponding to each positioning member 42, and a piston rod 44 directed to the upper carrier 41 of the cylinder 43 is positioned by urging the hydraulic cylinder 43 forward and backward. It is configured to be capable of reciprocating between a fixed position that abuts the member 42 and a release position that is separated from the positioning member 42. Further, a taper 44a corresponding to the taper 42a formed on the positioning member 42 is formed on the lower surface of the tip of the piston rod 44, and the taper 4a of the rod 44 is moved by moving the piston rod 44 to a fixed position.
4a comes into contact with the taper 42a of the positioning member 42, and by the so-called "wedge action" of both tapers 44a, 42a,
The upper carrier 41 is firmly positioned and fixed on the upper surface of the top plate 40.

The outer peripheral edge of the upper carrier 41 is shown in FIG.
As shown in FIG. 4, a notch 41b is formed in a required range in the circumferential direction, and a notch 40b is formed at the inner peripheral edge of the through hole 40a in the top plate 40 corresponding to the notch 41b. The through hole 45 is defined by. A gear box 46, which will be described later, is inserted into the through hole 45, and is configured to allow the gear box 46 to move in the required range in the circumferential direction.

As shown in FIG. 4, the upper carrier 41 has a barrel 48 of a cylinder 47 functioning as a rolling down device.
Are vertically fixed and extend in the vertical direction of the carrier 41 by a required length. At the upper and lower ends inside the barrel 48, cylindrical packing retainers 50, 50 for positioning the packings 49, 49 arranged in the barrel are fitted and fixed. A piston 51 is axially slidably and rotatably disposed in the barrel facing the upper and lower packings 49, 49.
An upper space 52 and a lower space 53 are defined between them and 9,49. If hydraulic pressure is supplied to the upper space 52 from an external supply source (not shown), the piston 51
Moves down in the barrel, and when hydraulic pressure is supplied to the lower space 53 from an external supply source, the piston 51 moves up in the barrel.
As a result, as described later, the reduction adjustment for adjusting the interval between the upper straightening roll 29 and the lower straightening roll 31 is performed.
It should be noted that packings 54, 54 are provided on the upper and lower outer peripheral edges of the piston 51.

On the lower surface of the piston 51, a lower rod 55 is slidably inserted into a through hole 50a of the lower packing retainer 50, and a table 56 is provided at the lower end of the rod 55 protruding downward from the retainer 50. Are arranged and fixed. An upper straightening roll 29 is rotatably disposed on the lower surface of the table 56 via bearings 57, 57 so that the roll 29 can be rotationally driven in a desired direction by an upper drive motor 58 described later. Has become.

As shown in FIG. 4, an upper rod 59, which is slidably inserted into the through hole 50a of the upper packing retainer 50, is provided on the upper surface of the piston 51 so as to project therefrom.
A mounting base 60 is disposed and fixed to the upper end of the presser foot 9 that projects upward. An upper drive motor 58 is provided on the upper surface of the mounting base 60, and the cylinder 4
The upper part of a gear box 46 extending in parallel with 7 is fixed. The lower portion of the gear box 46 has the cutout portion 41.
It is fixed to the table 56 while facing the correction space 33 through a through hole 45 defined by b and 40b. Inside the gear box 46, an intermediate gear train 61 including a plurality of gears is arranged, and the intermediate gear train 6 is also provided.
1, a drive gear 62 meshing with the upper part and a driven gear 63 meshing with the lower part are pivotally supported. And the drive gear 62
Is connected to be rotated by the upper drive motor 58, and the driven gear 63 is connected to the upper straightening roll 29.
Is connected to the shaft 29a. Therefore, by driving the upper drive motor 58, the upper straightening roll 29 is driven through the drive gear 62, the intermediate gear train 61 and the driven gear 63.
Is rotated in the required direction. In addition, as a means for transmitting the power from the upper drive motor 58 to the upper straightening roll 29,
In addition to the gear train, for example, a combination of a chain and a sprocket, a combination of a belt and a pulley, or the like can be appropriately adopted.

An angle adjusting device 89 is arranged outside the upper end of the barrel 48 of the cylinder 47, and the angle adjusting device 89 is provided.
By operating 9, the piston 51, the upper drive motor 58, the gear box 46 and the upper straightening roll 29
However, the roll 31 is rotated with respect to the upper carrier 41 to adjust the angle of the roll 31. That is, the housing 64 is disposed outside the upper end of the barrel 48, and the ring body 65 is externally fitted to the upper rod 59 facing the inside of the housing 64. As shown in FIG. 5, the ring body 65 is externally fitted with the key 66 arranged on the ring body 65 in a state of being engaged with a key groove 59a extending in the axial direction of the upper rod 59. With respect to 59, it is configured to be slidable in the axial direction and integrally rotatable in the circumferential direction. A sector gear 67 is disposed and fixed at a required position on the outer circumference of the ring body 65, and the sector gear 67 meshes with a rack 68 movably disposed in the housing 64. An adjusting cylinder 69 is arranged in the housing 64, and its piston rod 69a is connected to the rack 68. That is, by biasing the adjustment cylinder 69 in the forward and reverse directions, the rack 68 moves horizontally, and the ring body 65 rotates in the forward and reverse directions via the sector gear 67 that meshes with the rack 68. This causes the piston 51 to rotate in the forward and reverse directions under the engagement of the key 66 and the key groove 59a,
The upper straightening roll 29 horizontally turns with respect to the pass line of the material to be straightened, and the angle is adjusted.

Sector gear 67 in the rack 68
A detection rack 70 is disposed and fixed on the side opposite to the side that meshes with, and a pinion 72 connected to an encoder 71 meshes with this detection rack 70. And the encoder 71
The output signal from is input to the control means (not shown),
The current angular position of the upper straightening roll 29 is monitored. In the embodiment, the end portion of the adjusting screw 73 screwed into the housing 64 is rotatably connected to the rack 68, and the adjusting screw 73 is manually rotated in the forward and reverse directions, whereby the upper straightening roll 29 is rotated. It is configured so that the angle can be adjusted. However, the adjusting screw 73 is attached as needed and is not an essential requirement.

(Regarding Lower Unit) The lower unit 32 is removably disposed on the bottom plate 74 of the main body 27, and the lower correction roll 31 disposed on the unit 32 is attached to the correction space 33 as shown in FIG. And a lower drive motor 84 (described later) is formed in the bottom plate 74.
It faces the inside of the pit 28 through. The lower unit 32 is set to have a size that allows it to be inserted into and removed from the correction space 33 of the main body 27 through the through hole 40a of the top plate 40. 32 is configured to be taken out from the through hole 40a.

The lower unit 32 includes a disk-shaped lower carrier 75, which is shown in FIG.
The ring-shaped groove 75a formed on the lower surface of the bottom plate 74 is mounted on the bottom plate 74 with the ring-shaped projections 74b corresponding to the bottom plate 74 fitted therein. On the lower surface of the lower carrier 75, the through hole 74
A plurality of positioning members 76 extending below the bottom plate 74 via a are provided so as to project in the circumferential direction at required intervals, and the V-shaped groove 7 is formed on the end surface of each member 76 in the outer circumferential direction of the lower carrier 75.
6a is formed. Further, a hydraulic cylinder 77 is disposed on the lower surface of the bottom plate 74 corresponding to each positioning member 76,
The piston rod 78 directed to the lower carrier 75 of the cylinder 77 can reciprocate between a fixed position in which it contacts the positioning member 76 by urging the cylinder 77 forward and backward and a release position in which it is separated from the positioning member 76. Is configured. Further, the tip of the piston rod 78 has a V-shape corresponding to the V-shaped groove 76 a formed in the positioning member 76.
The lower carrier 75 is formed in a V shape, and by moving the piston rod 78 to a fixed position, the tip of the rod 78 fits into the V-shaped groove 76a of the positioning member 76, so that the lower carrier 75 is firmly attached to the upper surface of the bottom plate 74. Positioned and fixed to.

A cutout portion 75b is formed in the outer peripheral edge of the lower carrier 75 in a required range in the circumferential direction, and a cutout portion 74c is formed at the inner peripheral edge of the through hole 74a in the bottom plate 74 corresponding to the cutout portion 75b. Both notches 75b, 74
A through hole 79 is defined by c. A gear box 80, which will be described later, is inserted into the through hole 79 and is configured to allow the gear box 80 to move in the required range in the circumferential direction.

As shown in FIG. 6, a columnar column 81 is rotatably disposed on the lower carrier 75 and extends vertically, and a table is provided at the upper end of the column 81 protruding upward from the lower carrier 75. 82 is arranged and fixed. And
A lower straightening roll 31 is rotatably disposed on the upper surface of the table 82 via bearings 83, 83, and the roll 31 is rotationally driven in a required direction by a lower drive motor 84 described later. ing.

A mounting base 85 is disposed and fixed to the lower end of the support column 81 projecting downward from the lower carrier 75. A lower drive motor 84 is disposed on the lower surface of the mounting base 85, and the mounting base 85 has A lower portion of a gear box 80 extending in parallel with the column 81 is fixed. Gear box 80
The upper part of the is exposed to the correction space 33 through the through hole 79 defined by the cutouts 75b and 74c, and is fixed to the table 82. Inside the gear box 80, an intermediate gear train 86 composed of a plurality of gears is arranged, and the drive gear 8 that meshes with the intermediate gear train 86 at a lower portion.
7 and a driven gear 88 that meshes with the upper portion is pivotally supported. The drive gear 87 is connected to be driven to rotate by the lower drive motor 84, and the driven gear 8 is also connected.
8 is connected to the shaft 31a of the lower straightening roll 31. Therefore, by driving the lower drive motor 84, the lower straightening roll 31 is rotated in the required direction via the drive gear 87, the intermediate gear train 86, and the driven gear 88. The power transmission means including the drive gear 87, the intermediate gear train 86, and the driven gear 88 is set so as to also function as a speed reducer. Further, as a means for transmitting the power from the lower drive motor 31 to the lower straightening roll 31, a mechanism by a combination of a chain and a sprocket or a combination of a belt and a pulley can be appropriately adopted as in the upper unit 30. Is.

An angle adjusting device 90 is disposed outside the lower carrier 75 of the support column 81. By operating the adjusting device 90, the support column 81, the lower drive motor 84, the gear box 80 and the lower correction device. Roll 3
1 rotates with respect to the lower carrier 75, and the roll 31
Angle adjustment is performed. The configuration of the angle adjusting device 90 is
As shown in FIG. 7, an angle adjusting device 89 for the upper straightening roll 29.
Therefore, the same members will be denoted by the same reference numerals with "A" added for distinction, and detailed description thereof will be omitted. The key 66A arranged on the ring body 65A
Is fitted in a key groove 81a formed in the column 81, and the ring body 65A and the column 81 are integrally rotated.

[0028]

Operation of the Embodiment Next, the operation of the straightening machine according to the embodiment thus constructed will be described. Prior to the actual operation of the straightening machine 26, the adjusting cylinder 69 in the angle adjusting device 89 of the upper straightening roll 29 is biased according to the specifications of the material to be straightened, and the rack 68 is horizontally moved to engage with the sector. The ring body 65 and the piston 51 are rotated via the gear 67. By the rotation of the piston 51, the upper straightening roll 29 horizontally swivels and is inclined at a required angle with respect to the pass line of the material to be straightened. Similarly, the lower straightening roll 31 is horizontally swung by the angle adjusting device 90 and is inclined at a required angle with respect to the pass line of the material to be straightened. In this angle adjustment, the drive motors 58, 8
4 and gearboxes 46,80 are straightening rolls 29,3
Rotate with 1. Next, the cylinder 47 arranged in the upper unit 30 is urged in the required direction, and the piston 51
By lowering, the upper straightening roll 29 is brought closer to the lower straightening roll 31, and the gap between the both rolls 29, 31 is set according to the material to be straightened. The cylinder 47
The reduction adjustment by can be set extremely finely (for example, in 0.1 mm units) by servo-controlling the hydraulic pressure supplied from the external supply source to the upper space 52 and the lower space 53.

When the upper drive motor 58 is driven in this state, the upper straightening roll 26 rotates in the required direction via the drive gear 62, the intermediate gear train 61 and the driven gear 63. When the lower drive motor 84 is driven, the lower straightening roll 31 rotates in the opposite direction to the upper straightening roll 26 via the drive gear 87, the intermediate gear train 86 and the driven gear 88. The material to be straightened which has been passed through the straightening space 33 from the inlet guide 36 provided in the main body 27 is
After being straightened by passing between 31
It is passed from the outlet guide 37 to the outside. The body 27 of the straightening machine 26 is formed in a box shape as shown in FIG.
Since 3 is substantially sealed, noise generated in the space 33 is suppressed from leaking to the outside, and the working environment of the worker can be improved. Further, since the box-shaped main body 27 has increased mechanical rigidity, it is possible to effectively prevent the main body 27 from vibrating during operation. It is recommended that the soundproofing effect be improved by attaching a sound absorbing material inside the main body 27.

When the straightening machine 26 is operated for a long time, the surfaces of the straightening rolls 29, 31 may be scratched, scales may be attached by baking, or local wear may occur. However, it becomes impossible to accurately correct the material to be corrected. In this case, the straightening rolls 29, 31 need to be polished, refurbished, or replaced. In addition, it is necessary to regularly clean and inspect sludge-like dirt that is a mixture of roll lubricating water and scale generated from the material to be straightened. As described above, when polishing, reshaping or replacing the straightening rolls 29, 31, or performing maintenance such as cleaning or inspection, the straightening machine 26 of the embodiment includes the units 30,
32 is adapted to be removed from the main body 27.

That is, by urging the hydraulic cylinder 43 arranged on the top plate 40 of the main body 27 and moving the piston rod 44 thereof to the release position, the rod 44 is separated from the positioning member 42 of the upper unit 30. As a result, the fixation of the upper unit 30 to the main body 27 is released, and as shown in FIG. 8, the upper unit 30 is separated from the main body 27 by lifting the unit 30 upward by means of a crane or the like. As a result, the upper unit 30 is transferred to a large work area outside, and maintenance or replacement of the upper straightening roll 29, or maintenance of the cylinder 47 or the angle adjusting device 89 functioning as a rolling down device at that location is easily performed in a short time. be able to.

The rod 78 is separated from the positioning member 76 of the lower unit 32 by urging the hydraulic cylinder 77 arranged on the bottom plate 74 of the main body 27 and moving the piston rod 78 to the release position. This releases the fixing of the lower unit 32 to the main body 27, and the lower unit 32 is lifted up by means of a crane or the like, so that the lower unit 32 is attached to the through hole 40 of the top plate 40.
It is pulled up from a and separated from the main body 27. As a result, the lower unit 32 can be transferred to a large work area outside, and maintenance or replacement of the lower straightening roll 31 or maintenance of the angle adjusting device 90 can be easily performed at that location.

The lower unit 32, which has been subjected to the above maintenance and replacement, has the through hole 40 of the top plate 40 in the main body 27.
The lower carrier 75 is lowered from a to the correction space 33.
The lower unit 32 is positioned and fixed to the bottom plate 74 under the engaging action of the piston rod 78 and the positioning member 76 by urging the corresponding hydraulic cylinder 77 when it is placed in a fixed position on the bottom plate 74. (See FIG. 6). At this time,
The lower straightening roll 31 faces the straightening space 33, and the lower drive motor 84 faces the pit 28 formed on the factory floor.
Next, the upper unit 30 that has been subjected to the above maintenance and replacement is placed on the top plate 40 of the main body 27 at a fixed position via the upper carrier 41, and the corresponding hydraulic cylinder 43 is placed.
By urging the piston rod 44 and the positioning member 42 into engagement with each other, the upper unit 30 moves the top plate 4
It is positioned and fixed at 0 (see FIG. 4). At this time, the upper straightening roll 29 is moved to the lower straightening roll 31 in the straightening space 33.
And is located above the path line of the material to be straightened.

As described above, the upper straightening roll 29, the upper drive motor 58, the angle adjusting device 89 and the cylinder 47 as the pressure reducing device are combined into one unit 30, and the unit 30 is attached to and detached from the main body 27 of the straightening machine 26. Since it is configured freely, replacement and maintenance of the upper straightening roll 29, or maintenance of other devices can be easily performed. Further, since the lower straightening roll 31, the lower drive motor 84 and the angle adjusting device 90 are combined into one unit 32,
Similarly, replacement and maintenance of the lower straightening roll 31 or maintenance of other devices can be easily performed. In addition, the unitization can reduce the installation area of the device, and has an advantage that the space in the factory can be effectively used.

Further, since the main body 27 has a box shape, the mechanical rigidity is improved, vibration during operation is suppressed, and the material to be straightened can be constantly straightened with high accuracy. Further, since the straightening space 33 facing the straightening rolls 29 and 31 is in a substantially sealed state, the noise generated in the straightening space 33 can be extremely reduced to the outside, and the working environment is improved. Moreover, since the structure is simple, there is an advantage that the cost can be reduced.

In the embodiment, the case where the upper unit and the lower unit are arranged in the box-shaped main body has been described. However, in the main body having the structure in which the upper frame and the lower frame are connected by the pillars as in the conventional case, the upper frame is The upper unit may be removably mounted on the lower frame, and the lower unit may be removably mounted on the lower frame.

[0037]

As described above, according to the straightening machine of the present invention, since the mechanism for adjusting the reduction of the straightening roll and the mechanism for adjusting the angle are integrated, the simplification of the mechanism can be achieved. it can. Further, since the intermediate plate can be omitted, it is possible to always perform accurate correction by eliminating the occurrence of vibration and the like due to the plate. Further, an upper straightening roll, a cylinder as a reduction device, an angle adjusting means and a drive motor are collectively arranged on an upper carrier which can be detachably mounted on the straightening machine main body, and a lower straightening roll and an angle are arranged on a lower carrier. Since the adjusting means and the drive motor are collectively arranged, the carrier can be detached from the main body and can be installed in a wide area outside for maintenance or replacement of each component, which facilitates the work and shortens the work time. There are advantages. Moreover, by unitizing each part related to the straightening roll, the device can be downsized and the space can be effectively used. Further, by making the main body into a box shape, mechanical rigidity is improved, noise is suppressed, correction accuracy is improved, and working environment is improved.

[Brief description of drawings]

FIG. 1 is a vertical sectional side view showing an overall configuration of a straightening machine according to an embodiment.

FIG. 2 is a plan view of a straightening machine according to an embodiment.

FIG. 3 is a schematic perspective view showing an appearance of a straightening machine according to an embodiment.

FIG. 4 is a vertical cross-sectional side view of essential parts showing an upper unit according to an embodiment.

FIG. 5 is a cross-sectional plan view of relevant parts showing the angle adjusting device for the upper unit according to the embodiment.

FIG. 6 is a vertical cross-sectional side view of essential parts showing a lower unit according to the embodiment.

FIG. 7 is a bottom cross-sectional view showing the main part of the angle adjusting device for the lower unit according to the embodiment.

FIG. 8 is a side view showing a state where the upper unit is separated from the main body of the straightening machine according to the embodiment.

FIG. 9 is a side view showing a part of a straightening machine according to the prior art.

[Explanation of symbols]

 27 Main Body 29 Upper Straightening Roll 31 Lower Straightening Roll 40 Top Plate 41 Upper Carrier 47 Cylinder 48 Barrel 51 Piston 55 Lower Rod 58 Upper Drive Motor 59 Upper Rod 61 Intermediate Gear Train 62 Drive Gear 63 Driven Gear 65 Ring Body 65A Ring Body 74 Bottom Plate 75 Lower Carrier 81 Support Post 84 Lower Drive Motor 86 Intermediate Gear Train 87 Drive Gear 88 Driven Gear 89 Angle Adjuster 90 Angle Adjuster

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hiroji Ito 50 Mihama-cho, Chita-gun, Aichi Fudofu Kitahamada 50

Claims (3)

[Claims] 1. A straightening machine provided with a pair of straightening rolls (29, 31) which are positioned above and below a pass line of a material to be straightened and are supported so as to intersect each other at a predetermined angle with respect to the pass line. The piston (51) is vertically movable and rotatable in the barrel (48) vertically arranged in the straightener body (27), and the piston (51) is vertically moved by the supply of hydraulic pressure from an external supply source. The cylinder (47) to be moved and the straightening roll (2
9) a rotatably supporting rod (55, 59), and a ring body (65) externally fitted to the rod (55, 59) so as to be integrally rotatable and permitting axial movement. And angle adjusting means for rotating the ring body (65) in forward and reverse directions.
(89), by moving up and down the piston (51), one of the straightening rolls (29) is moved closer to and away from the other straightening roll (31), and the ring body (65). A straightening machine configured to rotate one of the straightening rolls (29) horizontally to adjust the angle with respect to the pass line by rotating the straightening roll (29) in the forward and reverse directions. 2. A straightening machine provided with a pair of straightening rolls (29, 31) which are located above and below a pass line of a material to be straightened and are supported so as to intersect each other at a predetermined angle with respect to the pass line. The upper carrier (41) and the lower carrier (75) are removably positioned and fixed to the main body (27) of the straightening machine, and the piston () is attached to the barrel (48) vertically disposed on the upper carrier (41). A cylinder (47) for vertically moving and vertically rotating a piston (51) by supplying hydraulic pressure from an external supply source, and an upper straightening roll projecting below the piston (51). (29)
A lower rod (55) for rotatably supporting the upper straightening roll, which is projectingly provided above the piston (51).
An upper rod (59) provided with an upper drive motor (58) connected to the (29) via power transmission means (61, 62, 63), and integrally rotated with the upper rod (59). A ring body (65) that is fitted to the outer ring and is allowed to move in the axial direction, and an angle adjustment that is arranged on the upper carrier (41) and rotates the ring body (65) in the forward and reverse directions. Means (89), rotatably disposed on the lower carrier (75) and extending vertically, and rotatably supporting the lower straightening roll (31) at the upper end thereof, and at the lower end thereof a lower straightening roll. A pillar (81) provided with a lower drive motor (84) connected to the (31) via a power transmission means (86, 87, 88) also serving as a speed reducer, and integrally with the pillar (81). A ring body (65A) which is rotatable and is fitted to the outside in a state permitting axial movement, and the ring body (65A) disposed on the lower carrier (75).
A straightening machine comprising: an angle adjusting means (90) for rotating the blade in forward and reverse directions. 3. The straightening machine body (27) is formed in a box shape defining a straightening space (33) facing the upper and lower straightening rolls (29, 30), and an upper carrier is provided on a top plate (40) thereof. (41) is removably positioned and fixed, and the lower carrier (7
The straightening machine according to claim 2, wherein 5) is removably positioned and fixed.