JPS6018255B2 - Rolling mill pushing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is a strong pushing device for powerful pressing in order to generate a large pushing force when rolling a rolled material under high pressure with rolls.

When material is forced into the rolls during cold rolling, a side guide pressing device is used in conjunction with the feed pinch roll to assist the secondary roll.

This device consists of upper and lower clamp heads with wooden clamp pieces attached to the contact surface of the rolled material, and an upper clamp head lifting device. A moving device was used to move it and bite the roll. Therefore, the purpose of arranging such a device in a subsidiary is to prevent waving and lateral slippage of the rolled material, and a large pressing force is not required.

However, recently, as the rolling capacity of rolling mills, that is, the rolling reduction ratio has increased, a large force has become necessary to push the rolled material into the rolling rolls. In order to meet this demand, the present invention has a clamping function that overcomes the pushing force of the rolled material, and at the same time, when the rolled material is bitten by the rolls and is pulled, it can be easily released in the direction of progress of the rolled material, unclamped, and rolled. It is an object of the present invention to provide a pushing device for a rolling mill that has a structure that does not give deformities to the material. An embodiment of the present invention will be described below with reference to the drawings.

1 shows a sectional view taken along line A--A in FIG. 2, FIG. 2 shows a front view, and FIG. 3 shows a side view taken along line BB in FIG. In the figure, 1 and 1' are rolling mill housings, 15 is a movable platform on which plate holding device 2 and plate holding roll device 3 are attached, and wheels 16
is attached and connected with a pin to the arm 9 attached to the advance/retreat device 14 carriage, so that it can move horizontally on the rail 17. In the illustrated example, a hydraulic cylinder is shown as the advancing/retracting device 14, but the advancing/retracting device may be of a rack and pinion type. The fluid pressure cylinder 14 will be used as an example below. Reference numeral 4 denotes an upper pressing head, and a piece of wood 4' is attached to the pressing surface, and the tip of the hydraulic cylinder 7 is connected with a pin.

5 is a lower pressing head with the wooden piece 4' on the pressing surface as well as the upper surface.
A piece of wood 5' facing the is attached.

6 is a machine frame for fixing the upper pressing head 4 and the lower pressing head 5.

Reference numerals 10 and 11 are cylindrical upper and lower clamp rolls which are respectively fixed to the upper and lower chocks 19 and 2 by shafts, and are rotatably movable.

In addition, a cam clutch or ratchet 21, 2 for preventing reverse rotation is installed on either the left or right side of the upper and lower chocks 19, 20, respectively.
2 (cam clutch is attached in the figure). Reference numeral 8 denotes a fluid pressure cylinder in which the metal tip 23 and the upper chock 19 are engaged to be able to move up and down.

24 is a stand for fixing the upper and lower chocks 19, 20.

The upper and lower clamp rolls 10.11 have receiving rollers 12 attached to the shaft 24 on the front side, and upper and lower guides 29. 30 is installed.

Reference numeral 13 is a fluid pressure cylinder that hits a block 25 at the bottom of the stand 24 and is connected with a pin to an arm 26 whose tip is attached to the movable table 15. The pressing head 4.5 and the wooden pieces 4', 5 are movable back and forth separately from the device 2.
It is constructed so that the maintenance work of ' is facilitated, and the plate presser roll device 3 and plate presser device 2 can move forward and backward at the same time during the rolling operation.

An example of the operation of the present invention will be described below.

When pushing the rolled material 18 into the upper and lower work rolls 27 and 28 of the rolling machine, the following standby posture is taken.

The plate presser roll device 3 and plate presser device 2 of the present invention
5, and are arranged as one body up to the material receiving position of 32. Movement for this purpose is effected by a hydraulic cylinder 14. Upper clamp roll 10 of the present invention
is pulled upward by a hydraulic cylinder 8, and a lower clamp roll 11 adjusts and fixes the bass line height. The upper pressing head 4 of the machine frame 6 is also pulled upward by the fluid pressure cylinder 7, and the other lower pressing head 5 is adjusted and fixed at the normal bus line height by one. When the tip of the rolled material 18 sent out by the front pinch roll 31 passes between the upper and lower clamp rolls 10 and 11 and the upper and lower pressing heads 4 and 5 and reaches the most suitable position for the pressing operation, The rotation detector attached to the front pinch roll 31 (
(not shown)
was lowered, and the upper clamp roll 10 and the upper pressing head 4 clamped the rolled material (by a detector not shown).
The pushing operation is performed according to the command, and the upper and lower work rolls 27,
High pressure rolling is started by pushing forcefully between 28 and 28.
At this time, a force in the opposite rolling direction is applied to the upper and lower clamp rolls 10 and 11, but reverse rotation is prevented by cam clutches 21 and 22 attached to one of the upper and lower chocks 19 and 20. Simultaneously with the start of rolling, the cylinder is moved upward by a hydraulic cylinder 8 in response to a command from the detector, and the pressing is released. At this time, due to the timing, the rolled material 18 is caused by the rolling force.
In order to prevent the rolling material from being rapidly drawn in and causing curls or cracks, the upper and lower clamp rolls 10 and 11 are made rotatable in the rolling direction as a preventive measure. The upper pressing head 4 of the side guide pressing device continues to hold down during rolling, moves it upward when rolling is finished, and returns it to the receiving position together with the plate holding roll device 3 by means of 14 hydraulic cylinders. The fluid pressure cylinder 13 of the plate presser roll device 3 is used to move the plate presser roll device and secure a work space when performing maintenance on the pressing device 2.

The present invention enables rolling bite at a large rolling reduction.

[Brief explanation of the drawing]

FIG. 1 is a side sectional view of the present invention, showing the AA cross section in FIG. 2, FIG. 2 is a front view, and FIG. 3 is a B--B side view in FIG. 1. 1...Rolling mill housing, 2...Plate holding device, 3...Plate holding roll device, 4...
Upper pressing head, 4'...Top piece of wood, 5...Lower pressing head, 6...Machine frame, 5'...Lower piece of wood, 7
...Fluid pressure cylinder, 8...Fluid pressure cylinder, 9...Arm, 10...Upper clamp roll, 11...Lower clamp roll, 12...
・Receiving low-fu, 13...Fluid pressure cylinder, 1
4... Fluid pressure cylinder, 15... Moving table, 16... Wheels, 17... Rail, 18... Rolled material (cold rolled material) ), 19... Upper chock, 20... Lower chock, 21, 22... Cam clutch (ratchet), 23... Tip hardware, 24...
...Stand, 25...Flock, 26...Arm,
27...Upper work roll, 28...Lower work roll, 2
9...Top guide, 30...Bottom guide,
31...Another side pinch roll. Figure 1 Figure 2 Figure 3

Claims (1)

[Scope of Claims] 1. A plate holding device 2 having a movable table 15 connected to the advance/retreat device 14 and movably disposed in the rolling direction within the rolling mill housing, and provided with upper and lower pressing heads on the movable table 15. A rolling mill is constructed by arranging upper and lower clamp rolls 10, 11 and a plate holding roll device 3 equipped with reverse rotation prevention mechanisms 21, 22, and interlocking the plate holding device 2 and plate holding roll device 3 with a moving table 15. A pushing device for a rolling mill, characterized by forcibly pushing a rolled material 18 into rolls 27 and 28. 2. A movable table 15 connected to the advancing/retracting device 14 is arranged so as to be movable in the rolling direction within the rolling mill housing, and on the movable table 15, a plate holding device 2 equipped with an upper and lower pressing head and an upper and lower clamp roll 10 are mounted. . A pushing device for a rolling mill, characterized in that an advancing/retracting table 15a on which a presser roll device 3 is placed is arranged so that the plate presser roll device 3 can be horizontally moved together with the advancing/retracting table 15a separately from the plate pressing device 2.