JP4139531B2 - Inlet roller guide device - Google Patents

Description

BACKGROUND OF THE INVENTION
The present invention relates to an entrance roller guide device.
[Prior art]
In a roller guide device according to, for example, utility model registration No. 1884818 proposed by the present applicant, a main guide roller (main guide roller) and a sub guide roller (sub guide roller) are attached to a roller holder, and the rolling material is rolled into a rolling mill. It guides to the side.
[Problems to be solved by the invention]
If attention is paid to the fact that the guide rollers are adjusted more efficiently, there is a demand for less adjustment work.
An object of the present invention is to enable quick adjustment of the center distance.
[Means for Solving the Problems]
The present invention relates to a guide box, a pair of roller holders attached to the guide box so as to be rotatable about a fulcrum shaft, and a first guide roller provided to each roller holder with a first roller support shaft as a center of rotation. A second guide roller provided on each of the roller holders with a second roller support shaft as a center of rotation, and a center adjustment mechanism for simultaneously adjusting the centers of the first guide roller and the second guide roller. It is equipped with. The first guide roller is disposed on the front end side of each roller holder, and the second guide roller is disposed on the rear end side of the first guide roller. The second roller support shaft is provided on the fulcrum shaft, and both shaft centers are eccentric from each other. The inter-center adjustment mechanism includes an operating body having an adjustment portion, an adjustment shaft, a first upper eccentric portion provided eccentrically on an upper portion of the adjustment shaft, and a second upper portion provided on an upper portion of the fulcrum shaft. And an eccentric portion. The first upper eccentric portion and the second upper eccentric portion each have a gear portion on the outer periphery, and are disposed to face each other along the traveling direction of the rolled material. The said adjustment part is located between the 1st and 2nd upper eccentric parts which oppose, and enables rotation of the said 1st and 2nd upper eccentric part via each gear part. The rotational force of the first eccentric part is transmitted to the roller holder, and the second upper eccentric part is transmitted to the second roller support shaft.
[Action]
Due to the operation of the operating body, the adjusting portion simultaneously rotates the first upper eccentric portion corresponding to the first guide roller and the second upper eccentric portion corresponding to the second guide roller. The adjustment shaft to which the rotational force from the upper eccentric portion is transmitted rotates eccentrically, so that the roller holder is rotated about the fulcrum shaft, and the center of the first guide roller is adjusted, and the adjustment shaft from the second upper eccentric portion is adjusted. The center of the second guide roller is adjusted by eccentrically rotating the second roller support shaft to which the rotational force is transmitted.
DETAILED DESCRIPTION OF THE INVENTION
The entrance roller guide device G1 shown in FIGS. 1 to 4 will be described.
The guide box 101 is provided with its tip end side (left end portion side in FIG. 1) facing the rolling mill and at the entrance of the rolling mill. The guide box 101 is provided with a pair of roller holders 102. These roller holders 102 can be moved toward and away from each other about the fulcrum shaft 103, and the roller holders can be opened and closed through the approach and separation. In each roller holder 102, a main guide roller 104, which is a first guide roller, is supported on the first roller support shaft 105 so as to be rotatable about the rotation center, and on the rear end side of the main guide roller. The secondary guide roller 106, which is a second guide roller, is attached with the second roller support shaft 107 as the center of rotation (FIG. 3). Reference numeral 103 a denotes a lower part of the fulcrum shaft 103. The second roller support shaft 107 is provided on the fulcrum shaft 103. The shaft centers of the fulcrum shaft 103 and the second roller support shaft 107 are eccentric from each other. Each roller holder 102 is threaded with a plurality of push bolts 108 (two in each case in FIG. 4) from the outer surface to the inner surface of the rear end portion and penetrates in the left-right direction in FIG. Each push bolt is in a standing state on the inner side of the rear end portion of the roller holder 102 and abuts against an adjustment shaft 118 described later, and serves as a holding means for the rear end portion of the roller holder. Part of 109. The push bolt 108 is fixed by a nut 108a.
The center adjustment of the main guide roller 104 and the sub guide roller 106 is simultaneously performed by the operation of the center adjustment mechanism 109.
Here, the center adjustment mechanism 109 will be described.
A pedestal 110 is attached to the upper center of the guide box 101, and a pinion shaft 111 as an operating body is supported by the pedestal. The pinion shaft 111 is provided with an adjustment pinion 112 that is an adjustment portion having a reverse screw relationship with the pedestal 110 interposed therebetween.
As shown in FIG. 3, a first upper eccentric portion 113 and a first lower eccentric portion 114 are provided on the upper and lower portions of the adjustment shaft 118, respectively. The first upper eccentric portion 113 and the first lower eccentric portion 114 are eccentric with respect to the adjustment shaft 118. Both the first upper eccentric portion 113 and the first lower eccentric portion 114 are held by the guide box 101. The first upper eccentric portion 113 integrally forms a gear wheel 115. A second upper eccentric portion 116 is provided on the fulcrum shaft 103. The second upper eccentric portion 116 is integrally formed with a gear wheel 117 as shown in FIG.
The first upper eccentric portion 113 and the second upper eccentric portion 116 are arranged to face each other with an interval along the traveling direction of the rolling material (the left-right direction in FIG. 1). The adjustment pinion 112 is positioned between the opposed first and second upper eccentric portions 113 and 116 and meshes with the gear portions 115a and 117a of the respective gear wheels.
As shown by the chain line in FIG. 1, a tension spring 119, which is a spring, is provided between the tip portions of both roller holders 102. The tension spring 119 is applied with a spring force in a direction to open between the front end portions of the roller holder 102. For this reason, the rear end portion is applied with a spring force in the closing direction. The tip of the screw bolt 108 that is screwed in is always in contact with the adjusting shaft 118 at a predetermined pressure, and the backlash of the roller holder on the fulcrum shaft 103 can be suppressed.
Therefore, the adjustment pinion 112 can simultaneously rotate the first upper eccentric portion 113 and the second upper eccentric portion 116 by rotating the pinion shaft 111. The adjustment shaft 118 can rotate eccentrically as the first upper eccentric portion 113 rotates, and the rotational force is transmitted to the rear end side of the roller holder 102 through the push bolt 108 that is in contact with the adjustment shaft. It can rotate about the fulcrum shaft 103, and as a result, the position of the main guide roller 104 can be adjusted. The push bolt 108 has a function of supporting the rear end side of the roller holder 102 and also has a function of transmitting the eccentric rotational force of the adjustment shaft 118 to the roller holder. Further, the second roller support shaft 107 can rotate eccentrically with the rotation of the second upper eccentric portion 116, and as a result, the position of the sub guide roller 106 can be adjusted.
An entry guide 120 having a hole shape similar to the shape of the rolled material is inserted in the rear end side of the guide box 101, and this entry guide is fixed to the guide box by a presser bolt 121.
Next, the center-to-core adjustment operations of the main guide roller 104 and the sub guide roller 106 will be described.
The pinion shaft 111 is turned manually or automatically. Then, the first upper eccentric portion 113 and the second upper eccentric portion 116 rotate simultaneously via the gear wheels 115 and 117.
On the other hand, the adjustment shaft 118 rotates eccentrically with the rotation of the first upper eccentric portion 113, and this rotational force is transmitted to the rear end side of the roller holder 102 through the push bolt 108, and the roller holder is centered on the fulcrum shaft 103. As a result, the roller holder is opened and closed, and as a result, the center of the main guide roller 104 is adjusted. After the adjustment, the nut 108a screwed on the push bolt 108 is tightened to fix the roller holder 102.
On the other hand, the fulcrum shaft 103 rotates eccentrically with the rotation of the second upper eccentric portion 116. For this reason, the position of each sub guide roller 106 is moved through the second roller support shaft 107, and as a result, the core of the sub guide roller Adjustments are made between them.
In this embodiment, the center adjustment of the main guide roller 104 and the sub guide roller 106 can be performed at the same time, and the center adjustment of the main guide roller and the center adjustment of the sub guide roller are divided into two stages. Since there is no need to perform this, the adjustment operation can be speeded up. Then, by holding the rear end portion of the roller holder 102 with a plurality of push bolts 108 arranged at intervals in the vertical direction, the gap between the roller holders facing each other across the pass line is “ha” when guiding the rolling material. It is possible to prevent the rolled material from falling over in a letter shape (so-called “one-sided opening”). In addition, the push bolt 108 plays a role of transmitting the rotational force from the adjustment shaft 118 to the roller holder 102 during the adjustment of the center of the main guide roller 104, which contributes to a simple configuration of the center adjustment mechanism 109. . Further, since the tension spring 119 applies a spring force in a direction in which the front end portion of the roller holder 102 is opened, the backlash of the roller holder 102 on the fulcrum shaft 103 is less than that in the case where a spring is provided between the rear end portions. Can be suppressed.
The entrance roller guide device G2 shown in FIGS. 5 to 9 will be described.
Since the configuration of the entrance roller guide device G2 is substantially the same as that of the entrance roller guide device G1, different configurations will be described, and common configurations will be described only when necessary.
As shown in FIGS. 7 and 9, each roller holder 202 in the entrance roller guide device G2 has a planar oval shaft hole 202a penetrating in the vertical direction at the rear end thereof. The adjustment shaft 218 of the center adjustment mechanism 209 is inserted into the shaft hole 202a and constitutes means for holding the rear end portion of the roller holder 202. In the roller holder 202 shown in FIG. 9, 202b is a shaft hole for a roller support shaft, and 202c is a shaft hole for a fulcrum shaft. In FIG. 5, 222 is a nosepiece.
Therefore, when the pinion shaft 211 is rotated, the first upper eccentric portion 213 and the second upper eccentric portion 216 rotate simultaneously via the adjustment pinion 212 and the gear wheels 215 and 217. On the other hand, as the first upper eccentric portion 213 rotates, the adjustment shaft 218 rotates eccentrically, and this rotational force is directly transmitted to the rear end side of the roller holder 202, and the roller holder rotates about the fulcrum shaft 203. Therefore, the two roller holders are opened and closed, and as a result, adjustment between the cores of the main guide roller 204 is achieved. On the other hand, the second roller support shaft 207 rotates eccentrically with the rotation of the second upper eccentric portions 216, the position of each sub guide roller 206 is moved, and adjustment between the centers of the sub guide rollers is achieved.
Guide box 201, fulcrum shaft lower part 203a, first roller support shaft 205, pedestal 210, first lower eccentric part 214, entry guide 220 and presser bolt 221 are the guide box 101, fulcrum shaft lower part 103a, first roller It corresponds to the support shaft 105, the pedestal 110, the first lower eccentric portion 114, the entry guide 120, and the presser bolt 121, respectively.
The entrance roller guide device G2 is not provided with the push bolt 108 and the tension spring 119 in the entrance roller guide device G1.
In this embodiment, in addition to the effect of preventing the above-mentioned “one-side opening”, since the push bolt 108 is not used, the eccentric rotational force of the adjustment shaft 218 is directly transmitted to the roller holder 202, so that the entire guide device The configuration becomes even simpler.
As the operating body, the pinion shafts 111 and 211 are used in the figure. However, the first and second eccentric parts are configured by, for example, cylinder rods, and the rods are moved back and forth to adjust the rods. You may make it rotate 113,213,116,216.
Further, the first and second upper eccentric portions 113, 213, 116, and 216 do not need to be configured as sleeves as shown in the figure, and are formed integrally with the adjusting shafts 118 and 218 and the second roller support shafts 207 and 207. May be.
Furthermore, the first and second lower eccentric portions 114 and 214 are not necessarily provided in any of the entrance roller guide devices G1 and G2.
【The invention's effect】
According to the present invention, since the distance between the cores of the first guide roller and the second guide roller can be adjusted at the same time, the adjustment work can be speeded up. In this invention, the rear end portion side of the roller holder is held by a plurality of push bolts, and the rear end portion side is held by inserting the adjusting shaft through the rear end portion, so-called one of the pair of roller holders. Opening can be prevented, and the fall of the rolled material at the time of guidance can be surely prevented.
[Brief description of the drawings]
FIG. 1 is a plan view showing an entrance roller guide device G1 of the present invention.
FIG. 2 is a front view showing an entrance roller guide device G1 of the present invention.
FIG. 3 is a cross-sectional view showing a main part of an entrance roller guide device G1 according to the present invention.
FIG. 4 is a partial cross-sectional side view showing an entrance roller guide device G1 of the present invention.
FIG. 5 is a plan view showing an entrance roller guide device G2 of the present invention.
FIG. 6 is a front view showing an entrance roller guide device G2 of the present invention.
FIG. 7 is a cross-sectional view showing a main part of the entrance roller guide device G2 of the present invention.
FIG. 8 is a side view showing an entrance roller guide device G2 of the present invention.
FIG. 9 is a plan view of a roller holder in the entrance roller guide device G2 of the present invention.
[Explanation of symbols]
G1 inlet roller guide device 101 guide box 102 roller holder 103 fulcrum shaft 104 main guide roller (first guide roller) 105 first roller support shaft 106 sub guide roller (second guide roller) 107 second roller support shaft 108 push bolt 109 Center adjustment mechanism 111 Pinion shaft (actuator)
112 Adjustment pinion (Adjustment part) 113 First upper eccentric part 115 Gear wheel 115a Gear part 116 Second upper eccentric part 117 Gear wheel 117a Gear part 118 Adjustment shaft 119 Tension spring (spring)
G2 inlet roller guide device 201 guide box 202 roller holder 203 fulcrum shaft 204 main guide roller (first guide roller) 205 first roller support shaft 206 sub guide roller (second guide roller) 207 second roller support shaft 209 center-to-center adjustment Mechanism 211 Pinion shaft (actuator)
212 Adjustment pinion (adjustment part) 213 First upper eccentric part 215 Gear wheel 215a Gear part 216 Second upper eccentric part 217 Gear wheel 217a Gear part 218 Adjustment shaft

Claims (3)

A guide box,
A pair of roller holders attached to the guide box rotatably about the fulcrum shaft;
A first guide roller provided in each roller holder with a first roller support shaft as a rotation center;
A second guide roller provided on each of the roller holders with a second roller support shaft as a rotation center;
A center-to-center adjustment mechanism for simultaneously adjusting the distance between the first guide roller and the second guide roller,
The first guide roller is disposed on the front end side of each roller holder, and the second guide roller is disposed on the rear end side of the first guide roller,
The second roller support shaft is provided on the fulcrum shaft, and both shaft centers are eccentric from each other,
The inter-center adjustment mechanism includes an operating body having an adjustment portion, an adjustment shaft, a first upper eccentric portion provided eccentrically on an upper portion of the adjustment shaft, and a second upper portion provided on an upper portion of the fulcrum shaft. With an eccentric part,
The first upper eccentric portion and the second upper eccentric portion each have a gear portion on the outer periphery, and are arranged to face each other along the traveling direction of the rolled material,
The adjusting part is located between the first and second upper eccentric parts facing each other, and enables the first and second upper eccentric parts to rotate via the respective gear parts,
Rotational force of the first eccentric portion in the roller holder, the second upper eccentric portion all SANYO are respectively transmitted to the second roller support shaft,
A plurality of push bolts are passed through the rear end portion of each roller holder from the outer surface toward the inner surface, and each push bolt abuts the tip portion of the push bolt against the adjustment shaft, and the rear end of the roller holder. An inlet roller guide device comprising a holding means for the part .   2. The inlet roller guide according to claim 1, wherein the adjustment portion is constituted by an adjustment pinion, gear wheels are provided in the first and second upper eccentric portions, and the adjustment portion meshes with the gear wheel. apparatus. The entrance roller guide device according to claim 1 or 2, wherein a spring for applying a spring force in a direction of opening both the tip portions is provided between the tip portions of the roller holders.

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