JPH0341851Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The present invention relates to an outlet guide for a rolling mill that allows the size of the guide to be changed without replacing the guide when changing the size of rolled material. .

(B) Conventional technology Conventionally, the method for changing the size of the guide is to fix the lower guide to the guide box, and fix the upper guide to the guide box with an adjustment bolt via a spring so that it can be adjusted up and down. When the gap between the rolling rolls was changed due to a change in rolling size, there was a method (Japanese Utility Model Application No. 52-62327) in which the position of the upper guide was adjusted using an adjustment bolt to match the size change.

(c) Problems to be solved by the invention The above-mentioned conventional example corresponds to a method in which the rolling size is changed by keeping the lower roll of the rolling mill fixed and moving the upper roll up and down to adjust the roll gap. This is an example of changing the size of the exit guide.

This conventional size change method has the disadvantage that the pass line moves up and down as the rolling size is changed, so recently, the roll pairs of the rolling mill are moved to the center of each other, and the pass line is moved up and down as the rolling size is changed. A method has been adopted that attempts to change the rolling size while keeping the rolling size constant.

According to these recent methods of changing rolling size, in the conventional guide mentioned above, the position of the lower guide is fixed, so it is possible to adjust the guide to center distribution on the pass line according to the new rolling size. Therefore, there was a drawback that the guide body had to be replaced to match the new size every time the rolling size was changed.

From the above, the objectives of the present invention are as follows.

The spacing of the following guides can be adjusted to the center of the pass line in accordance with the spacing adjustment of rolling rolls due to changes in rolling size, and the size can be changed by adjusting the spacing without replacing the guides. To make it possible.

(d) Means for Solving Problems The present invention has guides 3, 3 divided into upper and lower parts in the guide box 1, and a shaft that passes through the guide box 1 and is rotatable. It is movably supported by two pairs of supporting shafts 2, 2, 2, 2.

The support shaft 2 is provided with an eccentric shaft portion 2c, and the upper and lower guides 3 are fitted into elongated grooves 3a provided in the guide so as to be rotatable and movable in the front and rear directions via collars 2b. It has been done.

In addition, a groove 3a is provided at the rear end of the upper and lower guides 3, 3.
A groove 3b is provided in a direction perpendicular to the guide box 1, and is attached to the guide shaft 1a inserted into the guide box 1 so that it can slide only in the vertical direction, and restricts the movement of the guides 3, 3 in the front-rear direction. .

On the other hand, a worm wheel 2a is fixed to each support shaft 2, and a pinion shaft 4a is rotatably supported on the side wall of the guide box 1.

In addition, the pinion shaft 4a has a pinion 4 that simultaneously drives the two support shafts 2, 2 mounted on the upper guide 3, and a pinion 4 that simultaneously drives the two support shafts 2, 2 mounted on the lower guide. A driveable pinion 4 is fixed on the same shaft, and the pinions 4, 4 having opposite threads are meshed with the four worm wheels 2a, 2a, 2a, 2a, respectively.

(e) Operation When the pinion shaft 4a is rotated, the four worm wheels 2a meshing with the pinion 4 are rotated at the same time according to the direction of rotation, and the four support shafts 2a are rotated simultaneously.
The guide 3 is translated in parallel only in the vertical direction by keeping the eccentric amount the same in the front and back according to the eccentric amount of the eccentric shaft portion 2c.

The guide 3 is provided so that its movement in the front and rear directions relative to the guide box is restricted by the guide shaft 1a, that is, it is impossible to move back and forth.
The movement of the eccentric shaft portion 2c in the front-rear direction by rotating the support shaft 2 causes the eccentric shaft portion 2c to move in the slot 3a of the elongated hole.
is absorbed by sliding in the front-back direction.

Here, by keeping the eccentricity of the upper and lower eccentric shaft parts 2c the same, the upper and lower guides 3 can be equally distributed and parallel to the pass line without having to move the interval between them in the front and rear directions in accordance with the change in rolling size. The interval can be adjusted.

(F) Embodiment An embodiment of the present invention will be described below with reference to FIG. 1, which is a side view thereof, and FIG. 2, which shows a cross section taken along the line -- of FIG.

A guide 3 divided into upper and lower sections is installed in the guide box 1 as shown in FIGS. 1 and 2.

The guide is movable parallel to the traveling direction of the rolled material and is held by two pairs of upper and lower support shafts 2.

The upper and lower guides 3 are provided with elongated grooves 3a that are parallel to the traveling direction of the rolled material, and the eccentric shaft portion 2c of the support shaft 2 is slidably fitted into the grooves 3a via the collar 2b. ing.

On the other hand, the guide 3 has a groove 3b in a direction perpendicular to the groove 3a at the rear end (right side in FIG. 1) of the guide 3.
The guide shaft 1a that passes through the guide box 1 is slidably mounted only in the vertical direction.

Therefore, the upper and lower guides 3 are regulated so as not to shift in the front-back direction, and the guides 3 are configured so that their position can be adjusted only in the up-down direction.

Note that the grooves 3a and 3b are spaced at an appropriate distance in the front-rear direction so that they do not come into contact with each other even when the eccentric shaft portion 2c is maximally eccentric back and forth with respect to the rolling material traveling direction due to rotation of the support shaft 2. have.

A worm wheel 2a is fixed to the outer end of the four support shafts 2, 2, 2, 2, upper and lower.
As shown in FIG. 1, pinions 4, 4 are arranged on the worm wheel 2a so as to mesh with two pairs of the worm wheels 2a, respectively.

The pinion 4 is connected by a pinion shaft 4a rotatably supported on the side wall of the guide box 1, has a reverse thread at the top and bottom, and is rotatable by a pedestal 5 disposed on the pinion shaft 4a.

That is, when the pinion 4 is rotated, the four support shafts 2 are simultaneously rotated in accordance with the direction of rotation. The spacing between the upper and lower guides 3 can be distributed around the pass line in accordance with changes in rolling size, and can be adjusted to a desired set value.

Furthermore, by making either one of the pinions 4 and the pinion shaft 4a detachable using a clutch, it is possible to configure the pinions 4 so that they can be rotated individually, so that the positions of the upper and lower guides 3 can be adjusted independently. is also possible.

R is a rolling roll.

(g) Effects According to the present invention, it is possible to adjust the distance between the upper and lower guides in parallel to the center without moving in the front-rear direction in accordance with the change in rolling size, so it is not necessary to change the rolling size as in the conventional method. Purchasing guides not only reduces the time required to replace guides and improves equipment operation rate, but also reduces the number of guides in stock as there is no need to prepare guides for each rolling size. Costs and maintenance costs can be reduced.

[Brief explanation of the drawing]

Figure 1 is a side view showing one embodiment of the present invention;
The figure is a sectional view taken along the - line in FIG. 1. R...Rolling roll, 1...Guide box, 1
a... Shaft, 2... Support shaft, 2a... Worm foil, 2b... Collar, 2c... Eccentric shaft portion,
3...Guide, 4...Pinion.

Claims (1)

[Scope of utility model registration request] Guides 3 and 3 are divided into upper and lower parts and each has grooves 3a and 3b, and an eccentric shaft part 2c is rotatably supported by the guide box 1 and slidably installed in the groove 3a of the guide 3. two pairs of support shafts 2, 2, 2, 2 having
pinions 4, 4 meshing with the pinions 4, 4, the pinion shaft 4a to which the pinions 4, 4 are fixed, and the guide 3
The guide shafts 1a, 1a are installed in the grooves 3b of the guides 3, 3 to restrict the movement of the guides 3, 3 in the front-back direction, and by rotating the pinion shaft 4a, the guides 3, 3 are moved in parallel only in the vertical direction. An exit guide characterized in that it is configured to force the exit guide.