JP2799986B2 - Roller straightener and roll changer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roller straightener used for correcting bending of a material such as a shaped steel manufactured by rolling or the like, and a roll exchanging device for exchanging rolls thereof.

[0002]

2. Description of the Related Art A roller straightener is a device that corrects the bending of a material such as a shaped steel by passing the material between a plurality of rolls arranged alternately (in a staggered manner). If the horizontal spacing (pitch) between rolls and the vertical relationship (offset amount) are set appropriately for the material, the material sent through them will be straightened gradually while being repeatedly bent. .

[0003] As an example of a roller straightener and an apparatus for exchanging a roll thereof, Japanese Patent Laid-Open No. Hei 6-328 to the present applicant has been disclosed.
132 and JP-A-6-86815. In the roller straightener, when the size of the H-shaped steel to be straightened or the type of general steel material changes, it is necessary to replace the roll body. Since the roll body is usually assembled on a sleeve and fitted on a rotating shaft, the replacement is generally performed for the entire roll (roll unit) including the sleeve and the like. Roll exchange in the roller straightener
The most common method is to perform multiple rolls one by one.However, since the frequency of replacement is high, in the example described in the above publication, it is possible to replace all of the rolls at once using a dedicated replacement device. I have to.

[0004]

However, there is room for improvement in the following points in the roller straightener and the roll changing device described in the above-mentioned publication.
That is, a roller straightener that corrects the bending of the material by a plurality of rolls that are fitted on the plurality of rotating shafts and integrally with the sleeve, respectively, but the rotating shaft is a straight shaft having a constant outer diameter, and the Since it is necessary to provide a slight gap between the sleeve and the sleeve, wear and damage are likely to occur between the two.

[0005] Since a face gear that meshes with each other is provided between the sleeve and the rotating shaft and the rotation of the rotating shaft is transmitted to the sleeve, usually, high-precision position control is performed to match the phases of the two gears. Is required.

[0006] Although the lock of the sleeve with respect to the rotating shaft is released by using the spring force of a spring loaded on the shaft core of the rotating shaft, the sleeve may not be sufficiently released only by the spring force.

[0007] Since the supply of the rolls to the roll exchanging device is performed by moving the roll transport cart below the exchanging device and lifting the rolls, the operation is difficult and the operation efficiency is poor.

[0008] Since the suspension device that supplies the roll onto the roll transport trolley has a structure in which the hook is suspended by being hooked on a fitting portion provided on the outer peripheral surface of the roll, when the size of the roll changes, the hook is moved. Need to be replaced.

The present invention has been made in view of the above points,
It is an object of the present invention to provide a roller strainer and a roll changing device for the roller changing operation of a roller straightener capable of solving the above disadvantages and streamlining the operation.

[0010]

According to a first aspect of the present invention, there is provided a roller strainer comprising a plurality of rolls fitted on a plurality of rotating shafts so as to be integrally rotatable with a sleeve. In the roller straightener for correcting the bending of the material, each of the rotating shafts is formed into a taper whose outer diameter gradually decreases toward the tip, and the sleeve is provided at the tip with the inner diameter corresponding to the taper of the rotating shaft. Forming an annular groove at a predetermined position on the inner peripheral surface of the sleeve, forming both sides of the annular groove on inclined surfaces in a direction approaching each other radially outward, The sleeve is attached to the tip of a rotating shaft, advances radially outward when the sleeve is attached, and comes into contact with one inclined surface of the annular groove to move the sleeve toward the rotating shaft. A plurality of tightening wedge members arranged at intervals in the circumferential direction capable of being pushed in, and advancing radially outward at the time of removing the sleeve, abutting against the other inclined surface of the annular groove, and And a plurality of release wedge members arranged at intervals in the circumferential direction that can be separated from the rotation shaft.

According to the roller strainer according to the first aspect of the present invention having the above structure, the roll fitted integrally with the sleeve (that is, as a unit) is arranged on the rotating shaft. Are easily exchanged by an exchange device or the like. The first reason is that the leading end opening diameter of the sleeve (that is, the roll as a unit) is larger than the leading end outer diameter of the rotating shaft, and therefore, the sleeve can be easily and smoothly inserted into the rotating shaft. . Then, as the sleeve is inserted into the rotating shaft, the gap between the rotating shaft and the sleeve becomes smaller, and the gap eventually does not exist. Therefore, wear and damage between the rotating shaft and the sleeve are less likely to occur. The second reason is that when the roll (sleeve) is attached to the rotating shaft, not only can the tightening wedge member be extended in the radial direction and pushed in and locked, but also when the roll (sleeve) is removed from the rotating shaft, This is because a release wedge member for separating the roll is provided. That is, when removing the roll (sleeve) from the rotating shaft, the tightening wedge member is contracted in the radial direction, and the release wedge member is extended in the radial direction and pressed against one inclined surface of the annular groove of the sleeve. The sleeve (roll) can be forcibly released in the direction away from the rotating shaft. Moreover, once the sleeve is released, a gap is formed between the sleeve and the rotating shaft, so that the sleeve can be smoothly pulled out with a small force. In addition, since the roller strainer has a tightening wedge member and a releasing wedge member, even if a trouble occurs in the roll changing device, the roll can be changed without using the changing device. .

As described in claim 2, a large number of mutually meshing splines are formed on the outer peripheral surface of the base end portion of the rotary shaft and the inner peripheral surface of the distal end portion of the sleeve at intervals in the circumferential direction. It is preferable that the tips of the splines are formed in guide portions corresponding to each other.

According to the roller strainer of the second aspect, the spline between the rotary shaft and the sleeve can be easily engaged. In other words, the power transmission between the rotating shaft and the sleeve is performed through these splines. However, both of them can move the sleeve (roll) to the rotating shaft without the need for careful work such as aligning the keyway with the key. This is because the spline only engages with the shaft and feeds in the axial direction, and naturally meshes with the guide of the spline tip.

According to a third aspect of the present invention, there is provided a roll exchanging device for exchanging a roll having an annular portion on a tip end side peripheral surface with respect to a roller straightener for correcting a material bend by a plurality of rolls. As a roll holding means for holding and pulling in and out of the roller straightener, an annular portion protruding outward on the outer peripheral surface of the leading end of the roll, and a claw engageable with this annular portion at the tip, and having a radial direction. A clamp member that can be opened and closed, a plurality of bearing members that advance and retreat in a radial direction so as to be able to support the outer peripheral surface of the roll, and a driving unit that opens and closes the clamp member,
A support seat that can abut on the leading end surface of the roll and is urged in the direction of the roll by a spring. In addition,
It is preferable that the bearing member and the clamp member are provided at three locations at equal intervals in the circumferential direction so that the roll holding means holds the roll on the central shaft portion and the clamp member securely grips the annular portion.

According to the third aspect of the present invention, when the roll is removed from the roller straightener, the roll is first held by the roll holding means, and the roll is extracted while being held. The holding of the roll by this means is performed directly on a roller straightener, and when the roll holding means is approached and the clamp member is closed with respect to the annular portion at the tip of the roll, the claw at the tip engages. At the same time or prior to this, the plurality of bearing members extend radially inward with respect to the outer peripheral surface of the roll, whereby the bearing members abut and hold the roll. In addition, the roll holding means has a structure in which a plurality of bearing members that advance and retreat in the radial direction and a clamp member that can be opened and closed in the radial direction are not roll portions but sleeve portions.
Even when the size (outer diameter) of the roll is changed, it is possible to easily cope with the size of the section steel and the type of general steel material without distinction.

[0016] As described in claim 4 , according to claim 3,
In the roller changer, raise the roll before or after the change.
Roll storage means for storing the roll
Reversing for changing the direction of the holding means and the roll holding means
The roll transport trolley equipped with the
Roll supply position to be supplied and the roller straightener
Between the rolls and can be rotated integrally with the roll
A gripping device that can be inserted into a sleeve
The roll suspension mechanism provided can be moved up and down
Traveling between above the storage means and above the roll supply position
Can be deployed as possible .

According to the roll exchanging device of the fourth aspect, the roll to be exchanged suspended by the roll suspending mechanism is placed directly above the roll retaining means directed vertically upward or vertically downward by the turning means. Deliver from. For this reason, the worker can watch the state of the work without obstructing the field of view from a relatively high position (for example, on a table), and can perform the work easily and quickly. Only
Is also held in place in the sleeve that rotates together with the roll
When the device is inserted and suspended while holding the roll
Because the size and contour of the roll can be handled roll even when different. In particular, since the rolls are transferred along the vertical line, the action of gravity can be used for the movement of the rolls between the exchange device and the transport vehicle, and the handling of the rolls becomes easy. Also in the transport cart, it is easier and more structurally advantageous to support and move the rolls only in the direction of gravity than to roll them sideways while supporting them in the direction of gravity. Further, the roll holding means is turned by the turning means in a vertical plane including the axis of the held roll, and changes its direction. Changing the orientation of the holding means is convenient for removing the extracted roll from this exchange device or attaching a new roll to this exchange device, but such an orientation change is thus made in a vertical plane. This naturally reduces the occupied area in the horizontal direction. In various mills, including rolling mills, it is common that space is insufficient in the horizontal direction rather than the vertical direction, and the rolls have a considerable length in the axial direction. The effect of conversion is obtained. In addition, the roll can be held upright during standby when no replacement work is performed, so it is easy to secure space such as a passage around the exchange device, and the line of action of the gravity of the roll is near the center of the exchange device. This is also preferable in terms of physical stability of the exchange device.

[0018]

Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 and 2 are a plan view and a front view, respectively, showing a roller straightener 1 for correcting the bending of an H-shaped steel, and an exchange device 2 for a roll 10 thereof. FIG. 3 is a view taken in the direction of arrows BB in FIG. 1, showing a state in which the roll changing device 2 is turned 90 ° so as to be in a vertical direction.

As shown in FIG. 1, a roller strainer 1 is provided on the left side, and a roll storage means 3 for storing the roll 10 in a vertical direction is provided on the right side.

The roller straightener 1 is generally shown in FIG.
2, the nine rotating shafts 20 (FIG. 4) are driven by nine sets of driving devices 26 and 27 including motors, whereby the respective rolls 10 can be rotated. Further, the configuration is such that the horizontal pitch and the vertical interval between the rolls 10 can be changed according to the size of the H-section steel and the like. When the size of the H-section steel to be straightened or the type of general steel material or the like changes, the roll 10 needs to be replaced as described above. However, the illustrated roller straightener 1 and the roll replacement device 2
Such exchanges for all rolls 10 at the same time,
Moreover, the configuration is made with consideration given to the reasonably possible operation. The roll 10 has four types of roll units for wide, medium and narrow widths for H-section steel and for general steel materials. However, as shown in FIG. 5, the shape of the outer peripheral portion of the roll 10 (shaded portion) is all common, so that all types of rolls 10 can be replaced.

On the other hand, the roll exchanging device 2 for actually exchanging the roll 10 with the roller straightener 1 is shown in FIG.
As shown in FIG. 2 and FIG. 2, the overall configuration is as follows. The exchange device 2 is first operated on the operation side of the roller straightener 1 (the side opposite to the driving side where the driving devices 26 and 27 are located).
(Right side in the figure), and mainly includes a transport vehicle 70 that can be moved toward and away from the roller straightener 1, a roll holding unit 50 that holds the roll 10, a turning unit 60 that rotates the holding unit 50, and the like. Department.
The transport carriage 70 has the roll holding means 50 and the turning means 60 mounted thereon, and moves the entire roll changing device 2 on the upper and lower tracks 73 shown in FIG. 1 in parallel with the roll 10 and the rotating shaft 20 on the roller straightener 1. can do. Turning means 6
Reference numeral 0 denotes a frame 6 incorporating a roll holding unit 50 described later.
1 is supported by a horizontal support shaft 61a, and the frame 61 can be rotated in a vertical direction about the support shaft 61a by a driving device such as a motor 62. Support shaft 61
Since “a” extends in a direction perpendicular to the axial direction of the roll 10, the holding means 50 can be turned in a vertical plane including the axis of the held roll 10.

The roll holding means 50 is a frame 6 which is turned by the turning means 60 and moved by the transport carriage 70.
Nine sets corresponding to the number of rolls 10 are provided on each of the left and right sides of 1, each of which is configured as shown in FIG. 5.

As shown in FIG. 2, above the right end position of the roll changing device 2 on the track 73, the roll suspension mechanism 4 can run between the roll holding mechanism 3 (FIG. 1) and above. It is arranged so as to be able to move up and down freely through the elevating means 95. The roll suspension mechanism 4 is provided so as to be able to travel in the left-right direction of the drawing along the traveling frame 93 via the traveling carriage 94, and the traveling frame 93 is erected at predetermined intervals in the left-right direction. It is placed so as to be able to run in the vertical direction in the figure over the track 92 of the support column 91.

Although the roll 10 is fitted on the rotating shaft 20 according to FIG. 4, various contrivances are made on the roll 10 and the rotating shaft 20 for the convenience of replacing the roll. Hereinafter, an embodiment of the roller strainer 1 will be described with reference to FIG.

As shown in FIG. 4, the roll 10 includes an (inner) sleeve 12, a roll main body 11 fitted around the outer periphery of the end portion so as to be integrally rotatable, and a roll 10 that is integrally rotatable with respect to the sleeve 12 and slidable in the axial direction. An outer sleeve 13, two roll bodies 11 fitted on this end via a spacer 14 so as to be integrally rotatable, and a sleeve 12.
And a mechanism 15 for sliding the outer sleeve 13, and the sleeve 12 is detachably fitted on the rotating shaft 20.

First, the rotary shaft 20 is tapered so that its outer diameter gradually decreases toward the tip (right end in the figure), while the sleeve 12 has the inner diameter toward the tip (left end in the figure). Is formed in a taper that gradually increases.

Second, a plurality of splines (strips) 21 are formed at equal intervals in the circumferential direction on the base-side peripheral surface of the rotating shaft 20, and the spline 21 is formed on the inner peripheral surface at the distal end of the sleeve 12. The splines (strips) 22 that mesh with each other are formed, and the tips of the splines 21 and 22 are formed in guide portions 21a and 22a that are inclined downward (inward in the radial direction). If power is transmitted from the rotary shaft 20 to the roll 10 via these splines 21 and 22, the shaft ends are not required on the rotary shaft 20 without troublesome key adjustment or the like at the time of roll replacement. By simply inserting the sleeve 12, the connection between the rotating shaft 20 and the roll 10 is completed by itself.

A third method is to incorporate a tightening / releasing mechanism 30 as shown in the figure at the end of the rotating shaft 20. The mechanism 30 locks the roll 10 fitted on the rotating shaft 20 so as not to move or drop off from the rotating shaft 20 during operation or the like, and allows the roll 10 to be smoothly pulled out and inserted at the time of replacement. It is intended to be released. Structurally, an annular groove 16 is provided on the inner peripheral surface near the base end of the sleeve 12, and both sides of the annular groove 16 are inwardly inclined surfaces 1 approaching each other radially outward.
6a and 16b. Further, a cylindrical main body 31 is attached to the tip end surface of the rotating shaft 20 with a long bolt 31a in a horizontal direction, and the sleeve 12 is brought into contact with one of the inclined surfaces 16a of the annular groove 16 in the main body 31 so that the sleeve 12 is rotated. A plurality of tightening wedge members 32 to be pushed toward the side 20 are arranged at equal intervals in the circumferential direction so as to freely move in and out (advance and retreat) in the radial direction, and contact the other inclined surface 16b of the annular groove 16 to form the sleeve. A plurality of release wedge members 33 for separating 12 from the rotation shaft 20 are arranged at equal intervals in the circumferential direction and freely enter and exit (advance and retreat) in the radial direction. Each wedge member 32.3
Reference numeral 3 denotes the bases formed on the pistons 32a and 33a, which are slidably fitted into holes 34 and 35 having a circular cross section formed in the main body 31 to form hydraulic cylinders, respectively. Each wedge member 32.3 is passed through a hydraulic passage 34a / 35a formed in the shaft center along the axial direction.
3 is moved back and forth using hydraulic pressure. For this reason, the rotating shaft 20
When the roll 10 (sleeve 12) is removed from the sleeve 12, the sleeve 12 is separated from the rotary shaft 20 by advancing the release wedge member 33 radially outward to abut the other inclined surface 16b of the annular groove 16. If so, the sleeve 12 can be easily and reliably removed.

In addition, the above mechanism 1 can adjust the distance between the roll body 11 on the left end and the two roll bodies 11 on the right.
5 is provided. The interval adjusting mechanism 15 (of the roll body 11) has the following configuration. That is, the hydraulic drive motor 23 is attached to the end face of the main body 31, and the reduction gear 24 that rotates while meshing with the drive gear 23 a of the motor 23 is attached via the bearing 25. Between the end of the sleeve 12 and the end of the outer sleeve 13, the sleeve 1
The intermediate sleeve 17 is rotatably mounted on the second sleeve 2. Threads 13a and 17a are formed on the inner peripheral surface of the end of the outer sleeve 13 and the outer peripheral surface of the end of the intermediate sleeve 17 so as to be screwed to each other. It is configured to slide in the axial direction. Further, the ring gear 18 is fixed to the outer end of the intermediate sleeve 17 via an annular portion 19 with a bolt 18a, meshed with the external gear 24a of the reduction gear 24, and the motor 23 is rotated, whereby the intermediate sleeve 17 is rotated. The outer sleeve 13 slides, and the interval between the roll bodies 11 can be changed. The opening of the ring gear 18 is covered with a cylindrical cover 18b.

The roll holding means 50 is provided on each side of the frame 61 which is turned by the turning means 60 and moved by the transporting carriage 70, in nine sets corresponding to the number of rolls 10,
Each is configured as shown in FIG. That is, the support arms 66 are fixed at three circumferential positions at equal intervals on the side surface of the support member 69 of the frame 61 (FIG. 1), and the columnar support 63 is provided at the center of the support arm 66. Be fixed. A recess 63a at the center of the end face of the support 63
The support seat 64 is mounted so as to be freely retractable, and is urged forward by a disc spring 64a. With this structure, even if the tips of the nine (9 sets) of rolls 10 are somewhat irregular, the dimensional difference can be absorbed by deformation of the disc spring 64a.

A pair of left and right bearing members 65 are mounted on the inner surface of each support arm 66 by biasing them radially inward via disc springs 65a. This is a structure in which the roll 10 is held by a predetermined urging force (spring force), and when an external force greater than the urging force acts, the disc spring 65a is compressed. Therefore, for example, even if the stop accuracy of the roll 10 on the roller straightener 1 side is poor and a deviation of △ δ (see FIG. 5) occurs, the deviation is absorbed by the compressive deformation of the disc spring 65a.

A substantially central portion (longitudinal direction) of the clamp member 67 is pivotally mounted on the support 63 at a position facing the bearing member 65 so as to be freely opened and closed in the radial direction. At the distal end of the clamp member 67, an inward claw 67a that engages with the annular portion 19 of the roll 10 is provided.
The end of a rod 68a of a hydraulic cylinder 68 serving as an opening / closing drive unit incorporated in the support 63 is connected, and the clamp member 67 is opened / closed by the forward / backward movement of the rod 68a. The hydraulic cylinder 68 has a built-in disc spring 68b.
By applying the hydraulic pressure against the urging force of b, the clamp member 67 is opened to enter an unclamped state.
Therefore, when the hydraulic cylinder 68 does not operate due to a trouble of the hydraulic unit or the like, the clamped state is maintained by the disc spring 68b.

As shown in FIG. 6, the carriage 70 is moved by a rack 74 disposed on both sides of the track 73 in parallel and movably therewith, and a pinion 75 meshing with the rack 74 and rotating. The movement of the carriage 70 after the carriage 70 approaches the roller strainer 1, that is, the movement of the roll holding means 50 with respect to the roll 10 of the roller strainer 1 is performed by the hydraulic cylinder 76. Therefore, a hydraulic cylinder 76 is installed in parallel with each track 73, and the tip of a piston rod 76 a is connected to a rack 74. Also, a locking groove 74b is provided in the rack 74 so that the transport carriage 70 moves integrally when the rack 74 moves, and a lock shaft 70b arranged to be able to move up and down from the transport carriage 70 is engaged with the lock shaft 70b. The structure is such that it is appropriately locked in the stop groove 74b. Further, another rack 74c is integrally attached along the lower edge of the rack 74, and a pinion 74d meshing with the rack 74c is provided.
And an interlocking shaft 74e for connecting the pinion 74d to the pinion 74d on the other side. The pinion 75
It is connected via a clutch 72a to forward / reverse motors 72 mounted vertically on both sides of the transport carriage 70, respectively. The frame 61 of the turning means 60 is mounted on a horizontal support shaft 61.
A rotation motor 62 for turning around a is mounted on an auxiliary carriage 70a integrally attached to one side of the transport carriage 70, and is rotated in a vertical direction via a bevel gear 62a.

The movement of the carriage 70 after approaching the roller strainer 1 is performed by the hydraulic cylinder 76. At this time, first, the clutch 72a is disengaged, and the lock shaft 70b engages with the locking groove 74b of the rack 74. It is stopped and moves forward while both sides are synchronized via the rack 74c, the pinion 74d, and the interlocking shaft 74e. As described above, the drive system for moving the transport carriage 70 includes the motor 72 and the hydraulic cylinder 76.
The reason for the distinction is that when the transport vehicle 70 normally travels on the track 73, the driving force is relatively small, but when the transport vehicle 70 travels closely, that is, when the sleeve 12 is fitted into the tapered rotary shaft 20, This is because a very large driving force is required in consideration of the misalignment of each. Also clutch 7
The 2a and the setting only, when pushed with a hydraulic cylinder 76, in order to reluctant requires a driving force to rotate very large geared motor 72 of the speed ratio.

As shown in FIG. 7, the roll suspension mechanism 4
Gripping device 9 inserted into roll 10 (sleeve 12)
6 is provided. The gripping devices 96 are arranged at equal intervals in the circumferential direction, and a plurality of locking claws 97 that open and close in the radial direction,
An opening / closing drive mechanism 98 for these locking claws 97 is provided.
The opening / closing drive mechanism 98 is connected to an operation shaft 98b which is vertically moved by a hydraulic cylinder 98a.
One end of the operation link 98c is pivotally supported, and the other end of the operation link 98c is pivotally supported by an operation lever 97a that opens and closes integrally with the locking claw 97. Guides 42 are provided at equal intervals in the circumferential direction at the lower end of a support portion 41 extending downward from the roll suspension mechanism 4, and a pair of limit switches 43 are provided at the lower end of the support portion 41 with a vertical interval.・ 44 is installed. These limit switches 43 and 44 are connected to the operation shaft 9.
The lower limit switch 44 is operated by the operation unit 98d, the operation unit 98d contacts the lower limit switch 44, the switch 44 is turned on, and the locking claw 97 is turned on the upper inclined surface 16a of the annular groove 16 of the sleeve 12. It is confirmed that the roll 10 has been gripped and has been gripped.

Since the roller straightener 1 and the roll exchanging device 2 are constructed as described above, in this embodiment, the exchange of the roll 10 on the roller straightener 1 can be performed, for example, in the following manner. In addition, as shown by a virtual line in FIG.
Has already been held by the holding means 50 on one side of the exchange device 2 from the roll storage means 3 in the above-described manner, and the holding means 50 on the vacant side faces the opposite side of the roller straightener 1. It will be described as.

Each holding means 50 of the roll changing device 2
Is inserted into each roll 10 on the rotating shaft 20 of the roller straightener 1. For this purpose, it is necessary to first match the pitch between the rolls 10 in the roller straightener 1 with the pitch of the holding means 50 of the exchange device 2. Then, the exchange device 2 is transported by the transport cart 70.
To the roller straightener 1 and roll 10
The holding means 50 is inserted outside of the. After or before this operation, the release wedge member 33 is advanced radially outward to come into contact with the other inclined surface 16 b of the annular groove 16, and the sleeve 12 is separated from the rotary shaft 20.

The rolls 10 are held by the holding means 50, respectively, pulled out from the respective rotation shafts 20, and the exchange device 2 is moved back to the position shown in FIG. To hold the roll 10 by the holding means 50, first, the roll 10 is brought into contact with three circumferential bearing members 65 to support the outer periphery (outer sleeve 13) of the roll 10, and then to the hydraulic cylinder 68. The supply of the pressure oil is stopped, and the rod 68a is pushed up by the urging force of the disc spring 68b, so that the clamp member 6 is pressed.
By closing 7, the claw 67a at the tip engages with the annular portion 19 and pulls the roll 10. At this time, even if the positions of the nine sets of rolls 10 have some variation,
4 retracts against the disc spring 64a and absorbs the displacement, so that nine sets of rolls 10 can be clamped. In this state, if the transport carriage 70 runs in the reverse direction, the exchange device 2 pulls out the roll 10 from the rotating shaft 20 and returns to the position shown in FIG.

A new roll 10 is inserted on each rotating shaft 20 of the roller straightener 1. First, the frame 61 is turned by 180 ° by the turning means 60, and a new roll 10 previously held by the holding means 50 on another side is directed to the roller straightener 1 side. Then, the roll exchanging device 2 is advanced, and the rotating shaft 2
Insert the roll 10 on the cylinder 0 and push it in until the splines 21 and 22 mesh with each other. Subsequently, the tightening wedge member 32 is moved outward in the radial direction, and the other inclined surface 1 of the annular groove 16 is moved.
6b, and pushes the sleeve 12 toward the rotating shaft 20 side. The new roll 10 is locked on the rotating shaft 20, and the replacement of the roll 10 itself has been completed.

In preparation for the next roll exchange, the roll 10 extracted from the roller straightener 1
Carry out. After the roll exchanging device 2 is moved downward by the transport trolley 70 within the travel range of the roll suspension mechanism 4, the frame 61 is turned by 90 ° by the turning means 60 so that the roll 10 is turned upward in the vertical direction. The roll suspension mechanism 4 is lowered through the lifting / lowering means 95, and the roll 1
0 (sleeve 12), the roll 10 is gripped by deploying the locking claw 97 outward with the hydraulic cylinder 98a. And lifting means 95
After the roll 10 is lifted through the
The roll 10 is moved upward along the roll storage means 3 along with and the roll 10 is lowered and stored via the elevating means 95.

[0042]

As is apparent from the above description,
The roller strainer and the roll changing device according to the present invention have the following effects.

(1) Since the rotating shaft of the roller strainer and the sleeve of the roll have corresponding tapered shapes, the roll can be replaced easily and smoothly, and the gap between the rotating shaft and the roll can be eliminated. It is unlikely to occur. In addition, since the release wedge member is provided together with the tightening wedge member when attaching and detaching the roll, the work can be performed easily and reliably, and the roll can be replaced even if a trouble occurs in the roll exchange device. .

(2) In the roller strainer according to the second aspect of the present invention, since the spline having the tip formed on the guide portion is provided between the rotating shaft and the sleeve, the spline can be formed by merely fitting the roll on the rotating shaft and feeding in the axial direction. The meshing is naturally performed according to the guidance of the guide portion at the distal end portion, and the transmission of the rotational force is reliably performed between the two.

(3) In the roll changing device according to the third aspect,
Since the roll holding means includes a plurality of radially moving bearing members and a clamp member which can be opened and closed in the radial direction, even when the size (outer diameter) of the roll is changed, the amount of movement of the bearing members can be reduced. It can be easily handled by adjusting.

(4) In the roll changing device according to the fourth aspect,
In the roll exchanging device according to the third aspect, since the rolls are transferred from above, the operator can monitor the work state without obstructing the field of view from a relatively high table, and can easily and easily. Work can be performed quickly and inserted into the sleeve that rotates with the roll.
Since the roll is suspended via the holding device to be rolled, the roll can be handled even when the size and the outer shape of the roll are different.

(5) By combining the above-described roller strainer and the roll changing device, it is possible to save labor and increase the efficiency of the roll changing operation, reduce the size of the entire equipment, reduce the installation space, and change the roll. It becomes possible to automate the entire operation.

[Brief description of the drawings]

FIG. 1 is a plan view showing a roller straightener 1, a roll changing device 2, and the like as one embodiment of the present invention.

FIG. 2 is a front view of the roller straightener 1 and the roll changing device 2 shown in FIG. 1, and is a view taken in the direction of arrows AA in FIG.

FIG. 3 is a view showing a state in which the roll exchanging device 2 is turned 90
FIG. 2 is a view taken in the direction of arrows BB in FIG.

FIG. 4 is a central cross-sectional view showing a main part of the roller straightener 1 according to an embodiment of the present invention, which is partially cut away.

FIG. 5 is an enlarged sectional view showing the roll holding means 50 of the roll changing device 2 in detail.

FIG. 6 is a conceptual diagram showing a driving system for traveling of a transport vehicle 70 and a driving system for turning means 60 of the roll holding means 50.

FIG. 7 is an enlarged cross-sectional view illustrating a gripping device 96 of the roll 10 in the roll suspension mechanism 4 in detail.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Roller straightener 2 Roll exchange device 3 Roll storage means 4 Roll suspension mechanism 10 Roll 11 Roll body 12 Sleeve 13 Outer sleeve 15 Outer sleeve sliding mechanism 16 Annular groove 20 Rotary shaft 21/22 Spline 30 Tightening / release mechanism 32・ 33 Wedge member 50 Roll holding means 60 Turning means

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Takashi Higashiwada 3-1-1 Higashikawasaki-cho, Chuo-ku, Kobe-shi, Hyogo Kawasaki Heavy Industries, Ltd. Kobe Plant (56) References JP-A-6-328132 (JP, A) (58) Field surveyed (Int. Cl. ⁶ , DB name) B21D 3/05

Claims (4)

(57) [Claims] 1. A roller straightener for correcting bending of a material by a plurality of rolls fitted on a plurality of rotation shafts so as to be integrally rotatable with a sleeve, wherein each of the rotation shafts has an outer diameter directed toward a tip. Along with the taper being gradually reduced, the inner diameter of the sleeve is gradually reduced toward the tip corresponding to the taper of the rotating shaft, and an annular groove is provided at a predetermined position on the inner peripheral surface of the sleeve. The two sides of the annular groove are respectively formed on inclined surfaces in a direction of approaching each other radially outward, and are attached to the tip of the rotating shaft, and advance radially outward when the sleeve is attached, thereby forming the annular shape. A plurality of tightening wedge members arranged at intervals in a circumferential direction capable of abutting against one of the inclined surfaces of the groove and pushing the sleeve toward the rotation shaft; A plurality of circumferentially spaced release members which advance radially outward when removing the sleeve and abut against the other inclined surface of the annular groove to separate the sleeve from the rotary shaft. A roller straightener, comprising: 2. A plurality of splines that mesh with each other are formed on the outer peripheral surface of the base end portion of the rotating shaft and the inner peripheral surface of the distal end portion of the sleeve at intervals in the circumferential direction. The roller straightener according to claim 1, wherein the portions are formed in mutually corresponding guide portions. 3. An apparatus for exchanging a roller straightener having an annular portion on a peripheral surface on a tip end side with respect to a roller straightener for correcting a bending of a material by a plurality of rolls. As a roll holding means, an annular portion protruding outward from the outer peripheral surface of the leading end of the roll, a clamp member capable of engaging with the annular portion at the tip and capable of being opened and closed in the radial direction, A plurality of bearing members which advance and retreat in a radial direction so as to support the outer peripheral surface of the roll, driving means for opening and closing the clamp member, and a spring which can be brought into contact with the leading end surface of the roll and which is biased in the direction of the roll by a spring A roll exchanging device comprising: a supporting seat; 4. A state in which a roll before or after replacement is turned upward.
Roll storage means for storing the roll holding means and the direction of the roll holding means
Roll transport trolley equipped with changing turning means from directly above
The roll supply position where the roll is supplied and the roller
-A three-part that is arranged so that it can run between it and the toner and that is fitted to the roll so that it can rotate integrally.
Roll suspension mechanism with a gripping device that can be inserted into the
The roll is movable up and down and above the roll storage means.
4. The vehicle according to claim 3, wherein the vehicle is disposed so as to be able to run between the position above the supply position.
Placement of roll exchange apparatus.