JPS607841Y2 - Automatic fine-adjustment rolling machine for rolling mills - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an automatic rolling device that finely adjusts the rolling pressure necessary for rolling long steel, shaped steel, plates, etc. to a predetermined thickness.

The reduction blade is adjusted by adjusting the gap between the upper and lower rolls via a roll chock, but fine adjustment of the reduction is often required during rolling of long steel and steel bars.

However, in the past, it has been difficult for workers to perform qualitative and quantitative operations manually in such cases.

This invention proposes a rolling down device that automates these operations and also enables extremely fine adjustment of the rolling down amount, which will be explained below with reference to the drawings.

1 is a rolled steel bar, 2 is an upper roll, 2' is a lower roll, 3,
3' is an upper roll chock built into the housing 4, and 3" 3 III is a lower roll chock.

In the coarse reduction adjustment mechanism, a worm wheel 7゜7' is fixed to a horizontal drive shaft 6 of a hydraulic motor 5, and a worm wheel 8 that meshes with the worm wheel 7゜7' is fixed to a horizontal drive shaft 6 of a hydraulic motor 5.
, 8' attached to the reduction screw rod 10.10',
For details, see the upper rods 11, 11' and the main sliding block 12.
12', wedge 13.13', lower sliding block 14.
The lower end of the screw rod 14' and the lower rod 15, 15' connected in series is connected to the roll chocks 3, 3' at both ends of the upper roll 2 to lower the roll, forming a so-called screw-down type lowering mechanism. .

This wedge 13.13' has its horizontal upper surface in contact with the lower surface of the main sliding block, and its lower surface has a slope symmetrical to the housing center line (inward descending slope in the figure), and the upper surface of the lower sliding block [wedge sliding surface] 9 Wedge joint with the corresponding slope surface.

The wedge sliding surface may be the main sliding block surface.

Further, the reduction fine adjustment mechanism is provided with a worm 19 of the vertical shaft 18 with a spline shaft joint 17 connected to the servo motor 16, and a horizontal shaft 21 with a worm wheel 20 that meshes with the worm 19.
A right-hand thread 22 and a left-hand thread 23 are provided at both ends thereof, respectively, and are screwed together with the right-hand thread 22 and left-hand thread 23 on the end faces of the wedges 13 and 13' on the housing window side.

The control mechanism of this servo motor 16 for fine adjustment of the reduction will be explained.

24 is a rolled material outer diameter detection device installed on the exit side of the rolling mill; 25.
The rod set 1 is held using the fulcrum 25, and the displacement detector 26 outputs the outer diameter value, which is compared with the set value by the comparator 27, and the deviation amount is amplified by the amplifier 28. The servo motor is operated to the down side or the opposite side.

Since this lowering device has the above structure, rough adjustment is performed by driving the hydraulic motor 5, and the upper rod, upper sliding block, wedge, lower sliding block, and upper rod are wedge-connected via the worm wheel 7゜7'. Integrated screw rod 1
0 and lowers the upper roll chocks 3, 3'.

In addition, for fine adjustment after rough adjustment or during rolling, for example, when the detection device 24 detects that the outer diameter of the steel bar 1 after rolling is larger than the set value by S, the servo motor 16 corresponding to the amount S
n rotations on the rolling side are calculated and signaled, and the servo motor is driven n rotations on the rolling side.

This causes the vertical shaft 18 to rotate and the worm gear 19.2 to rotate.
0, rotate the horizontal shaft 21, push out the wedges 13 and 13' outward through the right-hand screw 22 and the left-hand screw 23, push down the wedge joint surface, and simultaneously push the roll chocks 3 and 3' by the same amount (S amount ).

The result (reduction amount) is fed back to the outer diameter detector as the detection amount for one bar, so that fine adjustment is automated.

Additionally, the coarse adjustment and fine adjustment function separately and independently due to the fact that the vertical shaft 18 has a spline shaft joint that allows it to move up and down, and because it is a worm gear mechanism.

As mentioned above, this device is an extremely useful device that enables automatic and minute adjustment of the rolling reduction in rolling steel products.

[Brief explanation of drawings]

The drawing shows a partially cutaway front view of a rolling mill housing equipped with the fine adjustment rolling down device of the present invention and a detection device. In the diagram: 1, 1' bar rope, 2, 2'...
Roll, 3.3', 3' 3 III... Field chock, 4... Housing, 5...
Hydraulic motor, 6... Drive shaft, 7.7'...
...worm foil, 8. 8'... Worm, 9... Wedge sliding surface, 10.10'...
...Reduction screw rod, 11,11'...
・Upper lot t', 12, 12'... Upper sliding block, 13.13'... Wedge, 14, 14'
...Lower sliding block, 15,15'...
・Lower rod, 16...Servo motor, 17...
... Spline shaft joint, 18 ... Curved straight shaft, 19.
... Worm, 20 ... Worm foil, 21 ... Horizontal shaft, 22 ... Right-hand thread,
23... Left screw, 24... Outer diameter detector, 25... Fulcrum, 26... Displacement detector, 27... Comparison Container, 28/Tune/Amplifier.

Claims (1)

[Scope of utility model registration request] In screw-down type rolling equipment of a rolling mill, a sliding block having a wedge sliding surface is provided at the mutual ends of an upper rod and a lower rod that divide the rolling screw rod into two, and a pair of wedges with a symmetrical gradient at the center of the housing are installed between them. are inserted horizontally facing each other, and the horizontal shaft rotates from a vertical shaft with a spline shaft joint connected to a servo motor via a worm gear.The right-hand and left-hand screws at both ends of the horizontal shaft are actuated by the wedge to raise and lower the lowering screw rod, thereby creating an upper roll chock. A rolling device for rolling down the rolling machine and an outer diameter detecting device on the exit side of the rolling machine, the detected value and a set value are compared, and the servo motor is operated and controlled to the rolling side or the opposite side according to the deviation value. An automatic fine-adjustment reduction device for a rolling mill consisting of a control device.