JPH07204725A - Rolling roller guide for wire rod - Google Patents

Abstract

PURPOSE:To make a roller freely adjustable in accordance with the size of a rolling stock by bisecting the roller in the direction of a supporting shaft and providing a roller slide mechanism of which space is changeable in the supporting shaft direction of the roller. CONSTITUTION:A roller slide mechanism is constituted of a pair of fulcrum pins 10 and a pair of nuts for raising/lowering, and rollers 1 bisected in the shaft direction of a supporting shaft rotate the fulcrum pins 10 to adjust space in the shaft direction. The fulcrum pins 10 are engaged with a guide box 3 and an upper and lower roller holders 2, and one of the pins performs a role as the fulcrum of a roller opening/closing mechanism. For this purpose, the pair of the nuts 11 for raising/lowering is moved in the direction opposite to each other by rotating the fulcrum pins 10, and the roller holders 2 are opened/ closed in the shaft direction of the fulcrum pins 10. Since the rollers 1 are each fixed to the upper and lower roller holders 2, the space is adjusted in the shaft direction of the supporting shaft 4 by opening/closing the roller holders 2. At this time, the fixed shaft 6 of the roller slides in between the fixed supporting shaft 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rolling roller guide for rod and wire rods, and more particularly to a rolling roller guide in which a roller can be freely adjusted according to a change in size of rolled steel.

[0002]

2. Description of the Related Art In rolling a rod or wire rod, rolling guides are installed on the inlet side and the outlet side of the rolling roll in order to accurately guide the rolling steel product to a rolling roll formed into a hole shape and to prevent the rolling steel product from falling. To do. There are two types of rolling guides: a friction type in which a groove that matches the cross-sectional shape of the rolled steel material is formed on the inner surface of the cylinder and the material is passed through it, and a roller type in which the rolled steel material is guided while being held by rollers. Nowadays, a roller type is widely used, which is stable in holding rolled steel and does not cause scratches and the like due to the rolling guide, and this tendency is particularly strong on the particularly important entry side. As described above, the present invention relates to improvement of this roller type rolling guide.

An example of the structure of the rolling roller guide is described on pages 186 to 187 of "Volume 2 Steel Manufacturing Method" published by Jishin Shokan Co., Ltd. It is common. This is equipped with a push bolt, but this is only for adjusting the roller spacing in response to slight dimensional fluctuations of rolled steel that occur within the same size. The structure in which the roller can be freely adjusted is not particularly considered. Conventionally,
Rollers were kept for each size of rolled steel, but the number of expensive rolling roller guide holders was limited, so the rollers had to be replaced each time the size was changed. The removal and installation work of the roller is complicated and requires a lot of time, and even if the removal roller and the bearing built in the roller have a remaining service life, they are often replaced when they are removed.

On the other hand, as a rolling roller guide whose roller can be adjusted according to the size of rolled steel material, an apparatus described in Japanese Patent Application Laid-Open No. 57-28609 has already been disclosed.
This means that even if the size of the rolled steel material changes, it is possible to handle multiple sizes by simply adjusting the spacing of the rollers in the rolling roller guide, provided that the radius of curvature of the rolling roll die is as uniform as possible. For that purpose, the rolling roller guide is equipped with a mechanism for gradually changing the roller interval.

However, in consideration of the dimensional accuracy of rolled steel and prevention of rolling flaws, the radius of curvature of the roll roll die must be practically proportional to the size of rolled steel. That is, there is no choice but to use a similar shape, and under such conditions, the device disclosed in Japanese Patent Laid-Open No. 57-28609 cannot support multi-sized devices. FIG. 3 illustrates the holding state of the rolled steel material according to such a conventional technique. First, FIG.
As shown in (A), the first rolled steel material 18 causes the roller 1 to be worn off at the dotted portions. 3 (B) is shown in FIG.
Next to (A), there is shown a state in which a rolling roller guide is used for a rolled steel material 18 'having a larger size. In FIG. 3 (A), the outer step formed at the roller wear boundary is the rolled steel material. It cuts into 18 'and causes a dent defect.
FIG. 3 (C) shows a state in which a rolling roller guide is used for a rolled steel material 18 ″ of a smaller size next to FIG. 3 (A), and the inner step similarly causes a dent defect. .

[0006]

As described above,
In the conventional rolling roller guide, there is a problem that a lot of roller replacement work is required, the cost of the roller and the bearing is high, or a flaw occurs in the rolled steel material. In order to solve these problems, it is an object of the present invention to provide a bar / roller rolling roller guide that allows the roller to be freely adjusted in accordance with changes in the size of rolled steel.

[0007]

The present invention has one or two pairs of rollers for tying and guiding a rolled steel material, a support shaft for supporting the rollers, and a roller opening / closing mechanism capable of changing the interval between the support shafts. In the rolling roller guide, the rolling roller guide for a rod and wire is characterized in that the roller is divided into two in the support axis direction, and a roller slide mechanism that can change the distance between the divided rollers in the support axis direction is provided. Is.

That is, the present invention was invented in view of the fact that the radius of curvature of the rolling roll hole die must be proportional to the size of the rolled steel material.
In contrast to the device disclosed in Japanese Patent No. 609, which has a roller opening / closing mechanism, the present invention provides a roller slide mechanism that divides the roller into two in the support axis direction and that can change the distance between the divided rollers in the support axis direction. It is characterized by the addition.

[0009]

FIG. 2 shows the holding state of the rolled steel material according to the present invention.
FIG. 3 in the case of the device described in JP-A-57-28609.
It is shown in comparison with. First, as shown in FIG. 2 (A), the first rolled steel material 18 causes the dotted portions of the roller 1 to wear. 2 (B) shows a state in which the apparatus of the present invention is used for a rolled steel material 18 'having a larger size next to FIG. 2 (A). 2 is widened at the same time as the space is extended in the supporting axis direction by the roller slide mechanism to match the wear of the roller 1 made in FIG. 2 (A) with the profile of the rolled steel material 18 '. It is possible to prevent the occurrence of a dent defect in the rolled steel material 18 'that occurs in (B). FIG. 2C shows a state in which a rolling roller guide is used for a rolled steel material 18 ″ having a smaller size next to FIG. 2A, and the roller 1 is placed in a direction perpendicular to the support shaft 4. By reducing the distance at the same time as reducing the distance in the support axis direction, the occurrence of a dent defect is similarly prevented.

[0010]

The rolling roller guide of the present invention will be described in detail below with reference to the drawings. FIG. 1 shows an embodiment in which a pair of rolling roller guides of the present invention is installed on the rolling roll entrance side. FIG. 1 (A) is a plan view and FIG. 1 (B) is a side view (FIG. 1 (A) as seen from the arrow aa ').

The rolling roller guide is mounted close to the entrance side of the rolling roll 15. That is, the guide box 3
Rest bar 1 that integrates the foot part of the
6 and the clamp 17 are clamped and fixed by a bolt (not shown). The entry guide 14 guides the rolled steel material to the inside of the rolling roller guide, and therefore is attached to the entry side of the rolling roller guide.

Each of the pair of rollers 1 is divided into two in the axial direction of the support shaft 4, and the divided rollers 1 are fixed to the upper and lower roller holders 2, respectively.
That is, the bearing 8 is built inside the roller 1,
Further, the hollow roller fixing shaft 6 is inserted inside the bearing 8, and the roller 1 is fixed by fixing the roller fixing shaft 6 to the roller holder 2 with the nut 7. A collar 9 is inserted between the bearing 8 and the roller holder 2 to remove looseness of the bearing 8. The support shaft 4 is inserted into the upper and lower hollow roller fixed shafts 6 to make the rollers 1 both-sided and improve the rigidity. In the example of FIG. 1, in order to improve the rigidity of the roller 1, the support shaft 4 is one and supports two divided rollers 1, but the support shaft 4 is also divided into two in the same manner as the roller 1, May have a cantilever structure. In this case, the hollow roller fixing shaft 6 becomes unnecessary.

The roller opening / closing mechanism is a pair of eccentric shafts 1.
2. A worm shaft 13 having left and right reverse threads cut off, and a pair of eccentric pieces 5. The pair of rollers rotates the worm shaft 13 to adjust the interval. The eccentric shaft 12 is fitted into the guide box 3 and the upper and lower roller holders 2, and the center of the shaft is eccentric between the guide box 3 and the upper and lower roller holders 2. Worm shaft 13
The eccentric shafts rotate a pair of eccentric shafts 12 each having a worm wheel on the upper side in the opposite direction, and the eccentricity causes the left and right roller holders 2 to be fitted to each other in the upper and lower parts of the rolled steel path line. Operates in the opening and closing direction toward. Since the roller holder 2 is centrally fixed by the fulcrum pin 10, when the roller holder 2 on the side of the eccentric shaft 12 is opened, the pair of rollers 1 fixed on the other end side of the roller holder 2 are closed, and vice versa. When the roller holder 2 on the side of the eccentric shaft 12 is closed, the pair of rollers 1 is opened, and the spacing is adjusted.

The roller slide mechanism is composed of a pair of the fulcrum pins 10 and a pair of lifting nuts 11, and the roller 1 divided into two in the axial direction of the support shaft 4 rotates the fulcrum pins 10 to make an axial gap. Adjust. The fulcrum pin 10 is fitted to the guide box 3 and the upper and lower roller holders 2, and one of them serves as a fulcrum of the roller opening / closing mechanism as described above. Further, the fulcrum pin 10 is provided with a reverse screw thread on the upper and lower sides, and the threaded portion is fitted with the lifting nut 11 embedded in each of the pair of roller holders 2. Therefore, when the fulcrum pin 10 is rotated, the pair of lifting nuts 11 move in opposite directions to open and close the roller holder 2 in the axial direction of the fulcrum pin 10. The roller 1 divided into two parts is fixed to the upper and lower roller holders 2, respectively.
The axial spacing of the is adjusted. At this time, the roller fixed shaft 6 slides between the fixed support shaft 4.

Although FIG. 1 shows an embodiment of the present invention having one pair of rollers, the present invention also includes the case of two pairs of rollers.

[0016]

As described above, according to the present invention, in addition to the conventional roller opening / closing mechanism, the roller is divided into two in the support axis direction, and the roller slide mechanism capable of changing the distance between the divided rollers in the support axis direction. It is possible to freely adjust the roller according to the change of the size of the rolled steel material.
It is possible to solve the problem that a lot of roller replacement work is required for the rolling roller guide and the cost of the roller and the bearing is high.

[Brief description of drawings]

FIG. 1 is an explanatory view showing an embodiment in which a rolling roller guide of the present invention having a pair of rollers is installed on a rolling roll entrance side.

FIG. 2 is an explanatory view showing a holding state of rolled steel according to the present invention.

FIG. 3 is an explanatory view showing a holding state of a rolled steel material according to a conventional technique.

[Explanation of symbols]

 1 roller 2 roller holder 3 guide box 4 support shaft 5 eccentric piece 6 roller fixed shaft 7 nut 8 bearing 9 collar 10 fulcrum pin 11 lifting nut 12 eccentric shaft 13 worm shaft 14 entry guide 15 rolling roll 16 rest bar 17 clamps 18,18 ′, 18 ″ Rolled steel

Claims (1)

[Claims] 1. A rolling roller guide having one or two pairs of rollers for tying and guiding a rolled steel material, a supporting shaft for supporting the rollers, and a roller opening / closing mechanism capable of changing a distance between the supporting shafts. A rolling roller guide for a rod wire, which is characterized by being divided into two in the axial direction and provided with a roller slide mechanism capable of changing the spacing of the divided rollers in the supporting axial direction.