JPH0231204Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a technology for correcting the shape (warpage) of a cold skin pass rolling mill, and relates to a crimping roll that can maintain precise level adjustment accuracy.

[Conventional technology]

A typical conventional technique of a warpage correction device for a cold pass rolling mill will be explained with reference to FIGS. 3 to 6. Fig. 3 shows the configuration of a two-stand cold temper rolling mill, in which the coil unwound by the payoff reel 1 is transferred to input/output bridle rolls 2, 8, temper rolling mills 3, 4, and shape correction machines before and after the rolling stands. This figure schematically shows the process from rolling via auxiliary rolls (stand entry/exit crimping rolls 5, 6, and anti-corrugated roll 7) to winding with a tension reel 9. 4 and 5 show the support and adjustment structure for the crimping rolls therein.

The crimping roll is a pair of left and right main frames 1
It is attached to one end of 1. This main frame 11 has a Y portion at the other end that contacts the jack 14 provided with curvature, and has a swinging fulcrum of the main frame 11 at an intermediate portion. This swing fulcrum is supported by a main frame support pin 12 fixed to the housing 27 of the rolling mill. Main frame 11
Cylinder 1 is installed near the crimping roll installation end.
3 are connected, and by expanding and contracting this cylinder, the level position of the crimping roll 6 is changed. The cylinder 13 is generally a hydraulic cylinder and always acts in the direction of lifting the crimping roll 6 during rolling, and its final level positioning is performed by a screw jack 14 provided at the other end of the main frame 11. The jack 14 is fixed to a bracket 19 fixed to the rolling mills 3 and 4,
They are arranged in pairs on the left and right. The jack 14 has a drive shaft connected to the left and right sides by a connecting shaft 16, and is driven by a motor 17 connected to this connecting shaft to raise and lower the lifting rod 15. The rotation speed of the drive shaft or motor 16 is detected by a pulse transmitter 18, and by displaying this detected value, the amount of elevation of the lifting rod 15 can be displayed and recognized off-line.

The crimping roll 6 is a roller with a built-in bearing, and is an idler roller that rotates in contact with the strip. During rolling, the crimping roll 6a located at the position indicated by the broken line in FIG.
Then, in order to set the level position of the crimping roll from the reference level 30 to a predetermined setting level X, the jack 14 is driven by the motor 17. Also, when rolling is completed,
The crimping roll 6 is retracted by the cylinder 13 to the position of the crimping roll 6a shown by the broken line so as not to interfere with the work roll 10 and the like when the rolls are rearranged. At this time, the tip of the lifting rod 15 and the Y portion of the main frame 11 are separated.

[Problem that the invention attempts to solve]

The relationship between the jack side end (Y section) of the main frame 11 and the rod 15 is shown in FIG. Jyatsuki 14
When the tip of the lifting rod 15 and the Y part of the main frame 11 touch at point a, if this point a is set as the lowest point of the stroke of the rod 15, then the tip of the rod 15 is raised to point c. In this case, even if it is assumed that point c is confirmed by the pulse generator 18, the rod 15 is actually bent due to the frictional force between the tip of the rod 15 and the Y portion of the main frame 11, and the rod 15 is bent at point b shown in FIG. Therefore, there is a problem in that the level is out of order by β. In other words, when an operation is performed to obtain an increase amount of α+β in FIG. 6, the increase amount actually becomes α. However, due to vibrations during rolling, the rod 15 that was in contact at point b slips and returns to the position at point c.

Since the crimping roll 6 is set at the other end of the main frame 11, movement of the tip of the rod 15 changes the level of the crimping roll 6 during rolling. In an ultra-thin cold rolling mill, it is important to maintain the level of the crimping roll 6. For example, even if the crimping roll 6 fluctuates by about 10 μm, shape defects such as warping may occur and become a problem. In addition, the main frame 11
The reason why the Y part has a curvature is due to the structure of the support pin 1.
2 as the center, horizontal displacement occurs at the point of contact between the tip of the rod 15 and the Y section, so consideration is given to minimizing the amount of displacement. However, the above-mentioned problems still remain, and their solution is desired. The present invention aims to provide a structure that solves this problem.

[Means for solving problems]

A solution is shown in FIGS. 1 and 2. This idea is
In FIG. 1, the rod 15 and the jack-side end Y portion of the main frame 20 are not brought into direct contact, and the roller 21 that contacts the main frame 20 and the roller 21 are supported between the rod 15 and the main frame 20. It is raised and lowered by a jack 14 via a guide rod 24.

In FIG. 1, the Y section is not provided with a curvature but is provided with a slope, but of course there is no problem even if a curvature is provided.

The present invention includes a guide body 22 fixed to a housing 27, and a slide bush 23 on the guide body 22. Slide button 2
3 is used as a guide, and a roller 21 is provided at the tip of a guide rod 24. The roller 21 is attached to the guide rod 24 via a pin 25 and a bush 26, as shown in FIG.

[Effect]

In FIG. 1, the main frame 11 in FIG. 4 is expressed as the main frame 20, and the amount of push-up E of the jack 14 required to lower the crimping roll 6 from the reference plane by the height direction displacement F is shown in FIG. (The vertical distance between the contact point g and the contact point h shown in FIG. 1) is raised by the guide rod 24, but at this time a horizontal displacement J occurs. The movement of the contact position corresponding to this horizontal displacement causes the roller 21 to rotate, and no horizontal displacement of the roller 21 occurs. The guide rod 24 receives a bending reaction force L from the bush 23, but unlike the lifting rod 15, it is easy to increase its rigidity. Since no force other than the vertical direction acts on the guide rod 24, the height of the crimping roll 6 during rolling does not vary.

[Effects of the invention] According to the invention, it is possible to adjust and maintain the level of the crimping roll with high accuracy, and it is possible to prevent shape defects in ultra-thin skin pass rolling.

[Brief explanation of the drawing]

Fig. 1 is a side view of an embodiment of the present invention, Fig. 2 is a detailed view of its main parts, Fig. 3 is a schematic overall side view of the skin pass rolling equipment, and Figs. 4 and 5 are crimping, respectively. A side view and a front view illustrating the operation of the roll, and FIG. 6 are diagrams illustrating the operation of a conventional jacking device. 1... Payoff reel, 2, 8... Bridle roll, 3, 4... Temper rolling mill, 5, 6... Crimping roll, 7... Anti-corrugated roll, 9... Tension reel, 10... Work roll, 11...Crimping roll main frame,
12... Main frame swing support pin, 13... Main frame tilting cylinder, 14... Jacket, 15
... Lifting rod, 16 ... Drive shaft, 17 ... Drive motor, 18 ... Pulse transmitter, 19 ... Bracket, 20 ... Crimping roll main frame,
21...Roller, 22...Guide body, 23...
Bush, 24... Guide rod, 25... Pin, 26... Bush, 27... Temper rolling mill housing, a, b, c... Contact point between the main frame and the tip of the jack rod, E... Push-up amount, F ...Displacement in the height direction, g, h...Contact, J...Displacement in the horizontal direction, L...Bending reaction force, X...Amount of vertical displacement from the reference level, α, β...Displacement in height, Y... ...The part that comes into contact with the jack.

Claims (1)

[Claims for Utility Model Registration] A pair of main frames whose central portions are swingably supported by support pins provided on the housing of a cold skin rolling mill, and a crimping roll is attached to one end of the main frames; A cylinder connected to the crimping roll mounting end side of the main frame to swing the main frame, and a cylinder arranged at the other end of the main frame to push up the other end via a lifting rod to slightly swing the main frame. , a crimping roll equipped with a main frame fine-adjustment elevating jack for finely adjusting the level of the crimping roll, a roller that abuts the main frame and a roller between the main frame and the elevating rod of the fine-adjustment elevating jack; A crimping roll characterized by having a guide rod that supports the roller and a guide body that guides the guide rod.