JP2002178021A - Variable width guide - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform the movement of a side guide smoothly and stably when adjusting guide width and to make the whole guide compact by simplifying a driving mechanism. SOLUTION: A pair of guide members which are extended in the rolling direction are moved in parallel by driving one adjusting screw member which is extended in the direction orthogonal to the rolling direction and the movement is guided with two stay bars which are extended in the direction orthogonal to the rolling direction. A means for driving the adjusting screw members is constituted including at least a helical gear which is fixed to the end part exposed from either side face of a pair of guide members and a worm shaft which is engaged with the helical gears and rotatably attached to the outer side face of a guide member on the other side.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a variable width guide device having a mechanism for adjusting a guide width between a pair of left and right side guides in a side guide device for guiding a rolled material to a rolling roll.

[0002]

2. Description of the Related Art A conventional guide width adjusting mechanism of this type is disclosed, for example, in Japanese Utility Model Publication No. 6-169. That is, a pair of upper and lower center adjustment shafts supported by a guide box, a roller holder with which the adjustment shaft is screwed, a guide roller provided on the roller holder, and a center adjustment shaft are rotated. And one gear shaft.

A pinion is fixed to the gear shaft, and a worm wheel that meshes with the pinion of the gear shaft is fixed to the center adjustment shaft. When the gear shaft is rotated, the worm wheel rotates in conjunction with the gear shaft. It is made to be made. Since the screw spindles of the above-mentioned center-adjustment shafts which are in a reverse screw relationship with each other are screwed into the roller holder, the rotation of the adjustment shaft causes the roller holders to move in conjunction with each other. That is, the center distance between the guide rollers is adjusted.

[0004]

However, in such a conventional side guide device, a pair of side guides disposed in parallel on a guide base is provided between a pair of upper and lower cores disposed in a guide box. Since the width is adjusted by sliding on the guide base by the adjusting shaft and the gear shaft disposed outside the guide box, each side guide is elongated along the rolling direction and its center of gravity is adjusted. Since there is no structure in which the center adjustment shaft can be installed at the position, there is a problem that the side guide cannot be moved smoothly and the operation becomes unstable.

[0005] Further, since the structure provided with the upper and lower two center adjustment shafts prevents the side guide from opening, the rolling load is directly applied to the center adjustment shafts.
The strength of the center-to-center adjustment shaft itself must be increased to an unnecessary degree, and the durability is poor, so that there is a problem that the width adjustment of the side guide becomes difficult or rattling occurs. Furthermore, it is necessary to arrange a drive mechanism for rotating the gear shaft outside the guide box,
Therefore, it is necessary to secure a sufficient space for installing such a mechanism at a position along the moving direction of the side guide, and there is a problem that the size of the entire apparatus is increased.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the prior art.
The aim is to propose a compact variable-width guide device that enables smooth movement and stable operation of the side guides, and eliminates the need for space for installing a drive mechanism outside the side guides. Is to do.

[0007]

Means for Solving the Problems The inventors of the present invention have made intensive studies to achieve the above-mentioned objects, and as a result, have conceived an invention having the following features as the main components. That is, the variable width guide device of the present invention extends in the rolling direction, and a pair of guide members provided on the base so as to be able to move synchronously in a direction perpendicular to the rolling direction; The guide member extends substantially in the center thereof in a direction perpendicular to the rolling direction and extends in a direction perpendicular to the rolling direction. One adjusting screw member rotatably supported and a pair of nut members each having a female screw portion screwed to a male screw portion of the adjusting screw member and fixed to the pair of guide members, respectively. A helical gear fixed to one end of an adjustment screw member exposed from one of the side surfaces of the pair of guide members, and meshing with the helical gear, and A driving means including at least a worm shaft rotatably attached to the outer side surface, and extending through the pair of guide members in a direction perpendicular to the rolling direction in front and rear thereof, respectively, and And two stay bars fixed to the base.

According to such a configuration, the rotation of one adjusting screw member provided below the pair of guide members causes
As each guide member is moved, the guide members are guided by two stay bars provided before and after the adjustment screw member, so that the pair of guide members move smoothly while maintaining a parallel state with each other. Becomes possible.

A helical gear fixed to one end of an adjusting screw member exposed from one side surface of the guide member;
The worm shaft meshed with the helical gear and rotatably supported on the outer surface of one of the guide members constitutes a driving means for rotating the adjusting screw member. A large space for providing the means is not required, and the entire guide device can be made compact.

That is, the helical gear is rotated by the rotation of the worm shaft, whereby the adjusting screw member is rotated to move the pair of guide members. At this time, the worm shaft itself is attached to the outer surface of one of the guide members. Since the worm shaft is mounted, the worm shaft is moved together with the guide member in a direction parallel to the axis of the helical gear while maintaining the meshing with the helical gear.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a plan view showing an embodiment in which the present invention is applied to a variable width guide device arranged on the entrance side of a rolling mill, showing a main part in cross section, and FIG. FIG. 3 is a longitudinal sectional view of a main part in FIG. 2, and FIG. 4 is a sectional view taken along line IV-IV in FIG.

In the drawing, a pair of guide members 10 and 12 for guiding a rolled material between a pair of rolling rolls (not shown) above and below a rolling mill are arranged along a rolling direction (indicated by an arrow X in the drawing). It has a suitable number of guide rollers 13 so as to be able to guide the rolled material while sandwiching it, and is movably mounted on the base B in a direction perpendicular to the rolling direction. ing.

The guide members 10 and 12 are moved by the rotation of one adjustment screw member 14 rotatably supported by the base B, and are moved forward and backward with the adjustment screw member 14 therebetween. 2 fixed on top
The book stay 15 guides the movement in the direction perpendicular to the rolling direction. Such a guide member 10
, The guide width is adjusted by synchronously rotating one adjusting screw member 14 by the driving means 16 and the clamping means is located at a position located rearward with respect to the rolling direction X. The width between the guide members is maintained at a predetermined value by disposing the clamp member 18 and operating the clamp means 18. Hereinafter, a specific description will be given.

The guide members 10 and 12 are connected to a base B
Adjustment screw member 14 for synchronously moving
Extends in a direction perpendicular to the rolling direction below each of the guide members 10 and 12 and is rotatably supported by a bearing block 20 fixed to the base B. The adjusting screw member 14 is formed of a screw rod having two male screw portions 22 having a reverse screw relationship to the guide members 10 and 12, respectively.
Nut member 26 having a female screw portion 24 screwed into the nut member 26
Are fixed to the lower portions of the guide members 10 and 12, respectively.

One end of the adjusting screw member 14 is exposed outside a nut member 26 fixed to the guide member 12, and a helical gear 28 (helical spur wheel) is fixed to the exposed end. As shown in FIG. 2, a worm shaft 30 having a worm gear meshing with the helical gear 28 is rotatably mounted on the outer surface of the guide member 12. A shaft portion extending vertically upward from the worm gear fixed to the tip of the worm shaft 30 forms a rotation operation portion, and the rotation operation portion is formed by appropriate means, for example,
The helical gear 28 is rotated by a manual operation using a spanner or a ratchet, and the adjustment screw member 14 is also rotated by the rotation.
And 12 can be moved synchronously on base B. As described above, the guide members 10 and 12 move away from each other or approach each other on the base B by the rotation of the worm shaft 30, so that the guide width therebetween is adjusted. The shaft 30 itself moves together with the guide member 12 while rotating, that is, the guide member 1 moves on a line parallel to the axis of the helical gear 28.
2, the thickness of the helical gear 28 in the axial direction, that is, the width of the tooth surface is set to be slightly larger than the moving amount of the guide member 12.

The mechanism 16 for driving the adjusting screw member 14 as described above includes a helical gear 28 fixed to an end of the adjusting screw member 14 exposed to the outside of one of the guide members 12, and a helical gear 28 of the guide member 12. Since it is composed of the worm shaft 30 vertically attached to the outer side surface, the structure is simple and the entire guide device can be made compact. In this embodiment, the tip of the rotation operating portion of the worm shaft 30 is formed in a hexagonal shape so that it can be manually rotated using a spanner or a ratchet. By installing a small motor above the guide member 12 and using a suitable gear mechanism to connect the motor output shaft to the tip of the rotation operating portion of the worm shaft 30, the motor can be driven.

Such a pair of guide members 10 and 1
The two translations are guided by the two stays 15 fixed to the base B as described above. The central portion of each of the stayers 15 is provided with the adjusting screw member 1.
4 is supported by the adjustment block 32 fixed to the base B at the front and rear positions, and the shaft portions around both ends thereof are provided below the guide members 10 and 12 in a direction perpendicular to the rolling direction. Guide members 10 and 1
2 is smoothly guided.

Further, a pair of guide members 10,
Clamping means 18 for directly pressing the base 12 against the base B
Are disposed at the rear ends of the guide members 10 and 12, respectively, that is, disposed upstream from the rolling rolls. For example, as shown in FIG. 2, the clamping means 18 includes a clamper 34 having a truncated quadrangular pyramid shape as shown in FIG.
Into the groove formed by the rear end wall and the rear ends of the guide members 10 and 12, and a bolt 36 is inserted through a hole passing through the center of the clamper 34. This is a structure that is screwed into a female screw portion formed on the side, and the taper surface of the clamper 34 is pressed against the rear end wall of the base B and the rear end of the guide members 10 and 12 by manually tightening the bolt 36. As a result, the guide members 10 and 12
Can be clamped against. On the other hand, the release of the clamp can be performed by loosening the tightening of the bolt 36. Although the clamp means 18 is configured by a simple combination of the clamper 34 and the bolt 36, it is needless to say that the clamp means 18 can be configured by using an appropriate hydraulic mechanism.

In the variable width guide device constructed as described above, one of the guide members 1 of the pair of guide members is used.
A helical gear 28 is fixed to the end of the adjusting screw member 14 exposed to the outside of the worm gear 2, and a worm shaft 30 meshing with the helical gear 28 is vertically attached to the outer surface of the guide member 12 to rotate the worm shaft 30. By rotating the part, the pair of guide members 10 and 12 is moved in parallel, so that the guide device can be reduced in size as a whole.

[0020]

As described above, according to the present invention, the movement of the pair of guide members at the time of adjusting the guide width is performed by the driving means having a simple mechanism and guided by the two stay bars, so that the movement is smooth and smooth. Stable movement can be performed, and a large space for providing the driving means is not required, so that the entire guide device can be downsized.

[Brief description of the drawings]

FIG. 1 is a partial sectional plan view showing an embodiment of the present invention.

FIG. 2 is a side view of the same.

FIG. 3 is a partially sectional side view of the same.

FIG. 4 is a sectional view taken along the line IV-IV in FIG. 2;

[Explanation of symbols]

 10, 12 guide member 13 guide roller 14 adjusting screw member 15 stayer 16 driving means 18 clamping means 20 adjusting block 22 male screw part 24 female screw part 26 nut member 28 helical gear 30 worm shaft 32 adjusting block 34 clamper 36 bolt B base

Claims (1)

[Claims] 1. A guide device arranged on the entry side of a rolling mill for guiding feeding of a rolled material to a rolling roll, wherein the guide device extends in the rolling direction and is synchronized with a direction perpendicular to the rolling direction. A pair of guide members provided on a base so as to be movable in a direction perpendicular to the rolling direction at substantially the center of the pair of guide members, and having a reverse screw relationship with each other. One adjusting screw member having two externally threaded portions corresponding to the respective guide members and rotatably supported with respect to the base; and a female screw screwed to the male threaded portion of the adjusting screw member. A pair of nut members each having a portion and fixed to the pair of guide members, and fixed to one end of an adjusting screw member exposed from one of the side surfaces of the pair of guide members. A driving means comprising at least a worm gear meshed with the helical gear, and a worm shaft rotatably attached to the outer surface of the one guide member; and A variable width guide device, comprising: two stay bars extending through each of them in a direction perpendicular to a rolling direction and fixed to the base.