JPH10291123A - Plate feed pinch-roll device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a plate feed pinch-roll device which is capable of sufficiently and positively supporting pinch rolls, eliminate drift or the pinch rolls, which is likely to be generated when a plate is passed through, without clamping and fixing the end of a bearing housing by a steel band, and thus preventing meandering of the plate. SOLUTION: A plate feed pinch roll device is provided with a pair of upper and lower fixed side pinch rolls and a pair of upper and lower movable side pinch rolls for feeding plates. Under the lower outsides of bearing housing 8 of the respective lower pinch rolls, three screw jacks 22L, 22M, 22R are arranged at intervals on a base 5 below the extension of the rotary shaft of a lower pinch roll body 13, with the tip sides facing up respectively, and the upper ends of the screw jacks 22L, 22M, 22R are allowed to abut on the undersurface of the bearing housing 8 to support it.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shearing device for shearing a thick plate material to a predetermined width in a rolling equipment, for example, comprising a pair of upper and lower fixed pinch rolls for feeding a plate material and a pair of upper and lower movable pinch rolls. The present invention relates to a pinch roll device for feeding plate materials provided.

[0002]

2. Description of the Related Art When a sheet material is sheared in a rolling facility,
Both sides of the plate are sandwiched between a pair of upper and lower pinch rolls (main body), and the plate is fed to the shearing device by their rotation, and the upper knife is lowered with respect to the lower knife for shearing.

One set (fixed side) of the pinch rolls used for feeding the plate material is fixed to the base fixed to the support, while the other set (movable side) is provided on the support. It is provided on a base that can run along the track laid on the base, and the movable side pinch roll can be moved according to the width of the plate material to adjust the distance between the left and right pinch roll bodies (hereinafter also referred to as roll bodies). Like that. By the way, the roll body gradually wears due to contact with the plate material, but as the roll diameter decreases, the pass line of the plate material falls, and when the roll body is rotated to feed the plate material, May meander. Therefore, it is necessary to raise the position of the lower roll main body to adjust the vertical position, that is, the so-called level. At the time of this level adjustment, in the conventional pinch roll device, the upper end of the screw jack disposed upward from the base below the lower part of the outer side of the bearing housing of each of the movable side and the fixed side pinch rolls is brought into contact. The pinch roll is supported, and the level adjustment of the pinch roll body as described above is raised by rotating the screw of the screw jack using a rotating tool such as a spanner, and the position of the pinch roll is set via the bearing housing. This is done by pushing up to a regular pass line. The screw jack also serves to support the roll body at a fixed position via the bearing housing.

As a prior art of this type of pinch roll device, there is an invention relating to a method of preventing a plate material from meandering in a shearing device described in Japanese Patent Application Laid-Open No. 5-269620. According to the present invention, the sheet material is reduced by the pinch roll on the entrance side and the pinch roll on the exit side of the upper and lower knives, or by releasing the reduction, the sheet material at the entrance side and the exit side at the time of feeding is released. The lowering portion between the pinch rolls and the supporting portion are made equal in length to prevent the meandering.

[0005]

However, in the above-described conventional pinch roll apparatus, only one screw jack is provided for each pinch roll, and the level adjustment of the pinch roll main body and the support of the pinch roll main body are performed. Is done with one screw jack.
For this reason, there is no particular problem with adjusting the level,
The support of the pinch roll body after adjustment becomes unstable.

Also, when the plate material pinch hydraulic cylinder is contracted to clamp the upper and lower pinch roll bodies and the plate material is fed (passing) therebetween, the pinch roll body may fluctuate and meander the plate material. There is. For this reason, in the conventional device, the upper and lower reducers on the opposite side of the pinch roll main body of the bearing housing were fastened and fixed with steel bands, but this work was cumbersome and completely prevented the meandering of the plate material. Can not.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and can sufficiently and surely support a pinch roll, and can prevent the wobble of the pinch roll main body, which tends to occur at the time of passing a plate, by using a steel band at the end of a bearing housing. It is an object of the present invention to provide a pinch roll device for feeding a plate material, which can be eliminated without fixing the portion by tightening and preventing meandering of the plate material.

[0008]

According to a first aspect of the present invention, there is provided a pinch roll apparatus for feeding a plate material, comprising: a pair of upper and lower fixed pinch rolls for feeding the plate material; and a pair of upper and lower movable pinch rolls. Comprising a pinch roll, on the extension of the rotation axis of the lower pinch roll body below the lower outer side of the bearing housing of each lower pinch roll, three screw jacks are arranged upward from the base below at intervals with an interval therebetween, An upper end of each of the screw jacks is configured to abut against and support the lower surface of the bearing housing. The screw jack is provided with a fixing nut to be screwed near the upper end of the screw part, and the upper end of the screw part is formed with a fitting part such as a two-sided cut part that can fit a rotary tool, and the fixing nut It is preferable that the screw is not rotated unless the screw is loosened.

According to the pinch roll device of the present invention, two screw jacks for supporting the pinch roll are provided on the extension of the rotation axis of the lower pinch roll in addition to the screw jack for adjusting the level, which was conventionally one. In addition, since the bearing housing is supported by a total of three screw jacks arranged at intervals, the bearing housing can be supported in a balanced manner over substantially the entire length, so that the plate pinch cylinder is contracted and the load of the upper roll body is reduced. The roll body does not fluctuate even when the plate material is passed in a state in which is applied to the lower roll body. This eliminates the need for an extra operation of fastening the upper and lower bearing housings on the opposite side to the roll body (upper and lowering reducers) with a steel band as in the related art.

According to a second aspect of the present invention, of the three screw jacks supporting the bearing housing of each of the lower pinch rolls, an intermediate screw jack is disposed at a substantially load center position in the longitudinal direction of each of the left and right pinch rolls. Set up
It can be used for level adjustment of the lower pinch roll body.

According to the second aspect of the present invention, when the level of the pass line is lowered due to abrasion of the roll body or the like, the intermediate screw jack is operated to push up the bearing housing, thereby lowering the lower roll body. Can be adjusted to a regular pass line position. Since the intermediate screw jack is located almost at the center of the longitudinal direction of each pinch roll load, when the screw jack is rotated and moved up and down, the position of the bearing housing with which the head of the screw jack contacts the longitudinal load It becomes the center, and the left and right pinch rolls move up and down with good balance. The operation so far is the same as before,
After this operation, the two screw jacks on both sides may be rotated until they come into contact with the bearing housing according to the adjusted operation amounts of the screw jacks.

According to a third aspect of the present invention, the screw jacks at both ends of the three screw jacks supporting the bearing housing of each of the lower pinch rolls are connected to both ends of the bearing housing so as to sandwich the plate material pinch cylinder. It is desirable to arrange. An air cylinder can be used as the plate pinch cylinder in addition to the hydraulic cylinder.

According to the pinch roll device of the third aspect, the plate material pinch cylinders are usually provided near both ends of the bearing housing, and in the present device, the outside of each cylinder is sandwiched between the plate material pinch cylinders. Since screw jacks are arranged at both ends of the bearing housing,
The span between the screw jacks for supporting the pinch rolls at both ends is maximized, and the bearing housing of the lower pinch roll can be sufficiently and effectively supported. Accordingly, it is possible to reliably prevent the roll body from wobbling, which tends to occur when the sheet material is pinched at the time of threading.

[0014]

1 to 4 show an embodiment of the present invention. 1 is an overall front view showing a pinch roll device for feeding a thick plate in a shearing device according to an embodiment of the present invention, FIG. 2 is a plan view thereof, FIG. 3 is a front view showing a part of FIG. FIG. 4 is an enlarged sectional view taken along line IV-IV of FIG.

The pinch roll device 1 shown in FIGS.
In this example of the rolling equipment, they are provided on the inlet side and the outlet side of a shearing device (not shown), respectively. A pair of upper and lower pinch rolls 2 and 3 are arranged on the left and right with a space therebetween with respect to a center line S of a plate passing through a pass line L therebetween. One set of pinch rolls 2.3 (right side in the figure) is fixed at a fixed position, and the other set of pinch rolls 2.3 (left side in the figure) is movable in the width direction of the plate.

That is, the set of the pinch rolls 2 and 3 on the fixed side is fixed via the base 5 on the support 4 which is continuous in the width direction. On the other hand, the pinch rolls 2.3 on the movable side
Are mounted on a pair of tracks 6, 6 laid in parallel on the support base 4 so that the base 5 can run, and the base 5 is moved to be held at a predetermined position. Has become. As shown in FIG. 2, a ball screw 7 is rotatably disposed in the middle of the tracks 6, 6 in parallel with the tracks 6, and the base 5 moves in one direction by the rotation of the ball screw 7 by the drive motor 7a. As shown in FIG. 3, the upper and lower pinch rolls 2 and 3 each have a cylindrical bearing housing 8. One end of a shaft 11 rotatably supported in the bearing housing 8 via bearings 9 and 10. The pinch roll bodies 12 and 13 are respectively mounted so as to be integrally rotatable.

As shown in FIG. 1, drive motors 15 are connected to the shafts 11 on the opposite sides of the pinch roll bodies 12 and 13 via reduction gears 14, respectively.
Electric power is supplied to the drive motor 15 by a cable (not shown). A cable (not shown) to the drive motor 15 of the set of the movable pinch rolls 2 and 3 is a J-shaped cable carrier 16. Guided by.

As shown in FIG. 4, a pair of hook-shaped support frames 17 are erected on the base 5 at predetermined intervals, and are mounted on a vertical frame member 17a on one of the support frames 17 (left side in the figure). The upper and lower bearing housings 8 are pivotally connected via pins 17 so as to be vertically rotatable via brackets 17b. A mounting bracket 19 is integrally fixed to the bearing housing 8.
Is pivotally attached to the bracket 17b by a pin 18. Between the other ends of the mounting brackets 19, both ends of a plate material pinch (clamp) hydraulic cylinder 20 are respectively connected by pins 21, and the pinch roll bodies 12 and 13 are opened and closed by the expansion and contraction operation of the hydraulic cylinder 20. A pair of hydraulic cylinders 20 are provided near both ends (slightly inward) of the bearing housing 8. With this configuration, most of the load of the pinch rolls 2 and 3 acts on the base 5 in a state where the upper and lower pinch rolls 2 and 3 are suspended by the pins 18 on the vertical frame member 17 a of the support frame 17.

By the way, in the conventional pinch roll apparatus (not shown), only one screw jack 22 for level adjustment is provided on the base 5, but the pinch roll apparatus 1 of the present invention is shown in FIG. 3, three screw jacks 22 are provided to reduce the load of the pinch rolls 2 and 3 by three.
It is supported by two screw jacks 22. In this embodiment, the head 22 a of each screw jack 22 is cut into two faces so that a rotary tool (not shown) can be fitted thereto, and the support seat 2 fixed to the bearing housing 8 is provided.
The upper surface is in contact with 3. In this example, one of the three screw jacks 22 is set at the position of the conventional screw jack for level adjustment. This is because the existing screw jack 22 is used. The other two are set at both ends of the bearing housing 8 so as to sandwich them at positions outside the hydraulic cylinders 20 for the respective plate material pinches. In addition, as shown in FIG. 4, each of the screw jacks 22 is disposed immediately below the rotation axis (axis) of the pinch roll bodies 12 and 13. The positions to be arranged on the fixed side and the movable side are determined as described above, and three screw jacks 22 are provided in a straight line along the axis of the bearing housing 8 and at intervals.

As shown in FIG. 3, the screw jack 22 has a female screw on its inner peripheral surface which is screwed to a male screw engraved on its side peripheral surface. It is rotatably arranged in the cylinder 24. Further, the lock nut 25 is screwed into the male screw portion of the screw jack 22 and disposed at the upper end of the inner screw cylinder 24.
After adjusting the height of 2, the screw nut 22 is prevented from loosening by tightening the lock nut 25.

In FIGS. 1 and 2, reference numeral 31 denotes a hydraulic cylinder for lifting up a kicker for extruding a short plate material passed between the pinch roll bodies 12 and 13. Reference numeral 32 denotes a hydraulic cylinder for the kicker. 33 is a cooling fan device for the drive motor 15. The drive motors 15 of the pinch roll bodies 12 and 13 are all electrically connected and controlled to rotate at the same speed.
Are connected by an interlocking shaft 34 and are configured to mechanically rotate at the same speed. Note that reference numeral 35
Is a telescopic cover, which covers the tracks 6, 6 by sliding as the movable base 5 moves.

The level of the pinch roll device 1 according to the present embodiment having the above-described configuration is adjusted before operation according to the following procedure.

After loosening the lock nuts 25 of the two screw jacks 22 L and 22 R at both ends of the three screw jacks 22, a rotary tool such as a spanner is fitted to the head 22 a and rotated to rotate the screw jack. 22L and 22R are respectively lowered and separated downward from the lower surface of the bearing housing 8.

After loosening the lock nut 25 of the intermediate screw jack 22M, a rotary tool such as a spanner is fitted to the head 22a and rotated, and the screw jack 22M is rotated.
By raising (or lowering) M, the lower bearing housing 8 is raised (or lowered), and the uppermost surface of the lower pinch roll body 13 is passed through the regular pass line L.
(FIG. 1).

After the level adjustment, the lock nut 25 of the intermediate screw jack 22M is tightened and fixed.

The screw jacks 22L and 2 at both ends
Each of the 2Rs is rotated and raised to bring the head 22a into contact with the support seat 23 of the lower bearing housing 8, and the lock nut 25 is tightened and fixed in this state.

Although the fixed and movable lower pinch roll bodies 13 of this embodiment are connected by an interlocking shaft 34, the above-described level adjustment work is performed on both the fixed and movable pinch rolls. It is necessary to do in 2.3. It is the interlocking shaft 34 and the pinch roll body 13
Because the shaft 11 is connected via a gear coupling, there is play in the gear portion 36 (FIG. 3).

Although the embodiment of the pinch roll apparatus of the present invention has been described above, the pinch roll apparatus of the present invention can also be implemented as follows.

(A) The position of the intermediate screw jack 22M is moved from the position of the existing level-adjusting screw jack 22 to the pinch roll 2 ·
Change to the center of load 3 in the longitudinal direction. Thus, during the level adjustment operation, the screw jack 22M can be smoothly rotated to move the bearing housing 8 up and down.

(B) The interlocking shaft 34 is removed, and the four drive motors 15 on the left, right, upper, and lower sides are controlled only electrically.

(C) The pinch roll device 1 is not limited to the case where it is provided at the entrance of a shearing device, but is used when a plate material is fed in a rolling mill or the like.

[0032]

As is apparent from the above description,
The pinch roll device of the present invention has the following effects. (1) According to the first aspect of the present invention, since the bearing housing of each pinch roll can be supported in a balanced manner over substantially the entire length, the cylinder for pinch pinch is contracted and clamped, and the load of the upper pinch roll is reduced by the lower pinch. The pinch roll (main body) does not wobble even when the plate material is passed while the pinch roll is being acted on. This eliminates the need for the extra work of tightening and fixing the opposite sides of the upper and lower bearing housings from the roll body with a steel band as in the related art. .

(2) According to the second aspect of the present invention, since the intermediate screw jack is disposed substantially at the center of the load in the longitudinal direction of each pinch roll, when the screw jack is rotated to raise and lower the bearing housing, The position of the bearing housing where the head of the screw jack abuts becomes the center of load in the longitudinal direction, and the left and right pinch rolls are raised and lowered in a well-balanced manner, so that the level adjustment operation can be performed smoothly and easily.

(3) According to the third aspect of the present invention, screw jacks are arranged at both ends of the bearing housing outside the respective cylinders so as to sandwich the plate pinch cylinders provided near both ends of the bearing housing. From the above, the span between the screw jacks for supporting the pinch rolls at both ends is maximized, and the bearing housing of the lower pinch roll can be sufficiently and effectively supported. The wobble of the pinch roll (main body), which easily occurs, can be reliably prevented.

[Brief description of the drawings]

FIG. 1 is an overall front view showing a pinch roll device for feeding a thick plate in a shearing device according to an embodiment of the present invention.

FIG. 2 is an overall plan view showing the pinch roll device for feeding a thick plate in FIG. 1;

3 is an enlarged front view showing a part of the pinch roll device for feeding a thick plate in FIG. 1;

FIG. 4 is an enlarged sectional view taken along line IV-IV of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Pinch roll device 2/3 Pinch roll 4 Support stand 5 Base 6 Track 6 7 Ball screw 7a / 15 Drive motor 8 Bearing housing 9.1 Bearing 11 Shaft 12.13 Pinch roll body (roll body) 14 Reduction gear 16 Cable bearer 17 Support Frame 18 ・ 21 Pin 19 Mounting Bracket 20 Hydraulic Cylinder 22 for Plate Pinch 22 (22L ・ 22M ・ 22N) Screw Jack 23 Support Seat 24 Inner Thread Cylindrical 25 Lock Nut 31 Hydraulic Cylinder for Kicker Lift 32 Hydraulic Cylinder for Kicker 33 Cooling fan device 34 Interlocking shaft 35 Telescopic cover 36 Gear section

Claims (3)

[Claims] 1. A pinch roll device for feeding a plate material comprising a pair of upper and lower fixed pinch rolls and a pair of upper and lower movable pinch rolls for feeding a plate material, wherein the lower pinch roll has a lower lower outer portion of a bearing housing. On the extension line of the rotation axis of the lower pinch roll main body, three screw jacks are arranged upward from the base below at intervals with an interval therebetween, and the upper ends of the screw jacks are supported in contact with the lower surface of the bearing housing. A pinch roll device for feeding a plate material, characterized in that: 2. The three screw jacks supporting the bearing housing of each lower pinch roll, wherein an intermediate screw jack is disposed substantially at the load center in the longitudinal direction of each pinch roll, and the level of the lower pinch roll main body is adjusted. The pinch roll device according to claim 1, which is used for adjustment. 3. A screw housing at both ends of three screw jacks for supporting a bearing housing of each lower pinch roll is disposed at both ends of the bearing housing so as to sandwich a plate pinch cylinder. Or the pinch roll device for feeding plate materials according to 2.