JPH032322Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a roller guide for a rolling mill having a double roller guide installed in a long steel rolling stand.

(Conventional technology) As a conventional double roller guide,
-25254, and this double roller guide has a roller holder swingably supported on a pair of support shafts installed upright in a guide box, as shown in Figures 4 and 5. A main guide roller and a sub-guide roller are rotatably supported on each roller holder, and the distance between surfaces can be adjusted using a distance adjustment device, and as shown in the fourth figure, the rolling roll and the support shaft are connected to each other. A main guide roller and a sub guide roller are arranged between them.

To explain the conventional example, the roller holder 3
Pins 38 and 39 that support the main rollers 32 and 33 and eccentric shafts 40 and 41 that support the sub rollers 34 and 35 are inserted into the roller holder 3.
6 and 37 are fulcrum pins 42 and 42 in the guide box 46,
It is swingably supported at 43. It has three pairs of shafts that rotate in this way, and the distance between the fulcrum pins 42, 43 and the set screws 44, 45 is the same as the fulcrum pins 42, 43.
Since it has a mechanical property that the spacing is equal to or greater than the spacing between the roller pins 38 and 39, the structure inevitably becomes horizontally elongated. Since the weight increases accordingly, a lot of labor is required to install it on the rolling mill, and the manufacturing cost is also high.

(Problem to be solved by the invention) The double roller guide of this conventional example has an excellent rolling material retention force and high It was used for rolling that required high quality, but in recent years, rolling temperatures have been lowered and rolling speeds have been increased, and the rollability of rolled materials has deteriorated.
In order to properly guide and guide the rolled material, the rolling material holding force required of the roller guide has increased, and it has become difficult to prevent the rolled material from swinging or falling with the conventional double roller guide.

In the conventional double roller guide, if the roller holder is arranged so that the distance from the main guide roller to the support shaft is minimized, the deflection of the roller holder will be minimized and the rolling material holding force will be maximized. Since the auxiliary guide roller must be provided between the support shafts, it is not possible to shorten the distance between the main guide roller and the support shaft any further.

On the other hand, there is a way to reduce deflection and increase the rolling material holding force by increasing the wall thickness of the roller holder, but increasing the wall thickness of the roller holder makes it impossible to install it in a narrow guide installation space, and It was difficult because it had the disadvantage of increasing costs.

From the above, the purpose of the present invention is to shorten the distance between the main guide roller and the support shaft, reduce the deflection of the roller holder, and provide a double roller guide with a higher rolling material holding force of the main and sub guide rollers. It is in.

(Means for Solving the Problems) In the present invention, roller holders 2 and 3 are pivotably supported on a pair of support shafts 10 and 11 that are rotatably installed on a guide box 1, and the roller holders 2 and 3 are pivotably supported. , 3 (on the left side in FIG. 1), main guide rollers 4 and 5 are rotatably supported by roller pins 6 and 7 so as to be adjustable between surfaces, and eccentric shaft portions 10a of the support shafts 10 and 11 are supported. , 11a has a sub-guide roller 8,
9 is rotatably supported and the support shaft of the roller holders 2 and 3 is shared with the support shaft of the sub guide rollers 8 and 9, and the support shaft of the main guide rollers 4 and 5 can be adjusted between the surfaces of the main guide rollers 4 and 5. is set screw 23, 24
It consists of spindles 19, 20 which are in contact with the roller holders 2, 3 through the roller holders 2, 3 and have a reverse thread relationship with each other, and a hexagonal nut 18 which is screwed to the spindles 19, 20 with a female thread, and the sub guide rollers 8, 9.
The surface-to-plane adjustment is a rolling mill roller guide consisting of pinions 14, 15 integral with the shafts, which mesh with threaded gears 12, 13 threaded onto the support shafts 10, 11, and have mutually opposite screw threads.

(Function) The face-to-face dimensions of the main guide rollers 4 and 5 of the present invention are such that by rotating the hexagonal nut 18, the spindles 19 and 20 push and pull the roller holders 2 and 3 via the set screws 23 and 24. The dimension between the surfaces of the sub guide rollers 8 and 9 is adjusted by
Screw gears 12 and 13 screwed onto support shafts 10 and 11
When the pinions 14 and 15, which are oppositely screwed to each other and mesh with each other, are rotated, the support shafts 10 and 11 are moved to the pinions 14 and 15.
By being rotated according to the rotation direction of 15,
The face-to-face dimensions of the sub guide rollers 8 and 9 supported by the eccentric shaft portions 10a and 11a of the support shafts 10 and 11 are adjusted.

The double roller guide of the present invention uses the support shaft of the sub guide roller and roller holder in common as described above, thereby reducing the total length of the roller guide by the amount of space required to install the sub guide roller compared to the conventional double roller guide. Therefore, the deflection of the roller holder is reduced in accordance with the shortened length, and the holding force of the rolled material at the pivot point of the main guide roller can be increased.

Further, since the sub-guide roller is supported by the support shaft of the roller holder, which is more rigid than the support shaft of the conventional example, the holding force for the rolled material is increased.

(Embodiment) As shown in FIGS. 1 to 3, in the present invention, roller holders 2 and 3 are swingably supported on a pair of support shafts 10 and 11 erected in a guide box 1.
Rear end of roller holders 2 and 3 (left side in Figure 1)
The main guide rollers 4 and 5 are connected to the roller pin 6,
7, and the eccentric shaft portions 10a, 11a of the support shafts 10, 11 have sub-guide rollers 8,
9 is rotatably supported.

The face-to-face adjustment device for the main guide rollers 4 and 5 is such that spindles 19 and 20, which are threaded in opposite directions to each other and fitted into protrusions 21 and 22 of the guide box 1, are connected to a hexagonal nut 1.
8, and the ends of the spindles 19 and 20 are set screws 23 and 24 screwed into the roller holder.
is in contact with. The setscrews 23 and 24 are tensioned by tension springs 27 which are secured to the roller holders 2 and 3 by pins 25 and 26, so that the set screws 23 and 24 are always kept on the spindle 1.
It is in contact with 9 and 20.

The surface adjustment device for the sub-guide rollers 8 and 9 includes screw gears 12 and 13 screwed onto support shafts 10 and 11, and pinions 14 and 15 with opposite threads meshing with each other. The shaft is integrally formed and rotatably supported on the guide box 1 by a pedestal 17.

Adjustment of the face-to-face dimension of the main guide roller is performed by rotating the hexagonal nut 18, and depending on the direction of rotation of the hexagonal nut 18, the roller holder 2,
3 are pushed and pulled by the spindles 19, 20 via the set screws 23, 24, so the face-to-face dimension of the main guide rollers 4, 5, which are pivotally supported on the rear ends of the roller holders 2, 3, is Adjusted to center distribution.

To adjust the dimension between the surfaces of the sub-guide rollers, when the shaft 16 is rotated, the pinion 1 is adjusted according to the direction of rotation.
4, 15, the screw gears 12, 13 are rotated, and the eccentric shaft portions 10a, 11a of the support shafts 10, 11 are rotated.
The face-to-face dimensions of the sub-guide rollers 8 and 9 which are pivotally supported are adjusted to center distribution.

(Effects of the invention) According to the invention, by sharing the support shaft of the roller holder and the sub-guide roller in the double roller guide, a higher holding force for the rolled material can be obtained compared to the conventional double roller guide. , the rolled material can be guided to the rolling rolls more accurately.

In addition, by using the support shaft of the sub-guide roller as the support shaft of the roller holder, the total length of the double roller guide can be shortened by the space required to install the sub-guide roller. It can be installed in mills with short distances between rolling stands, which was previously impossible.

[Brief explanation of drawings]

Fig. 1 is a side view, Fig. 2 is a plan view, Fig. 3 is a partially cutaway rear view of A to A in Fig. 2, Fig. 4 is a partially cutaway side view of the conventional example, and Fig. 5 is a partially cutaway rear view of A to A in Fig. 2. FIG. 4 is a plan view of FIG. 1... Guide box, 2, 3... Roller holder, 4, 5... Main guide roller, 6, 7...
...Roller pin, 8, 9... Sub-guide roller,
10, 11... Support shaft, 10a, 11a... Eccentric shaft portion, 12, 13... Screw gear, 18... Hexagonal nut, 19, 20... Spindle, 23, 24...
...Press screw.

Claims (1)

[Scope of utility model registration request] A roller holder is rotatably supported on a pair of support shafts that are rotatably installed on the guide box, and the main guide roller is rotatably mounted on the rear end of the roller holder with a roller pin, and the distance between the surfaces can be adjusted. a sub-guide roller is rotatably supported on the eccentric shaft portion of the support shaft so as to be adjustable between surfaces, and the support shaft of the roller holder and the support shaft of the sub-guide roller are shared; The adjustment between the surfaces of the main guide roller consists of a spindle that contacts the roller holder via a set screw and has a reverse thread relationship with each other, and a hexagonal nut that is screwed together with the female thread of the spindle. A roller guide for a rolling mill, characterized in that the adjustment is made up of a pinion integral with the shaft that meshes with a threaded gear threaded onto the support shaft and has opposite threads to each other.