JPS5855105A - Multistage cluster rolling mill - Google Patents

Abstract

PURPOSE:To provide a titled rolling mill which improves the accuracy in the thickness of rolled materials and the accuracy of their shapes by operating split type eccentric rolls constituting backup rolls by means of hydraulically driving devices via eccentric rings thereby controlling the rates of eccentricity and rolling reduction of the rolls. CONSTITUTION:In multistage cluster rolling mills which roll a material 1 to be rolled by incorporating work rolls 2, intermediate rolls 3, backup rolls 4, etc. into housing 1, the rolls 4 consist of 5 pieces of eccentric rolls, and their axial centers are displaced with pinions 17, racks 18a, 18b, sector gears 19a, 19b, and eccentric rings 15 by the operation of hydraulically driving devices 16. The rolls 3 and the rolls 2 in press contact with the rolls 4 supported pivotally to stationary shafts 5a stuck to the chocks 5 are deflected by the displacement of said backup rolls, whereby their corwns are adjusted. The automatic controlling of said devices 16 is made possible by position detectors 20.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to improvements in multi-stage cluster rolling mills.

In recent years, from the viewpoint of improving productivity and saving energy, there has been a demand for high-reduction rolling mills that can significantly reduce plate thickness in a single rolling process. Requirements are also becoming increasingly strict.

There is a multi-stage cluster rolling mill that enables cold rolling under high pressure. This multi-stage cluster rolling mill has the advantage of being able to reduce the diameter of the work reel, making it possible to perform piezoelectricity under high pressure even when the rolling load is small. (As a result, the shape of the rolled material becomes defective. Therefore, in conventional cluster rolling mills, the shape control device shown in Figs. 1 to 4 is adopted. This will be explained next. The material is rolled in the direction of the arrow.
2) is a pair of upper and lower work rolls, (03) is an intermediate roll of a pair of upper and lower tables supported by two M work rolls (02) t', and <oob=- each of the same intermediate rolls (03). The supporting reinforcing roll is divided into a plurality of K parts (5 in the drawing) in the direction orthogonal to the axial direction ((04~(see 04)). (05) is the metal chock for the reinforcing roll, ( 05a) penetrates the reinforcing roll (04) and fixes both ends to the metal chock for reinforcing pull (05), (015) is the same fixed shaft (05 and the reinforcing roll C04k) to (04d). ), (c4 is the drive motor installed on the housing (10), [#) is the rotating shaft installed on the housing (010), (4 is the same rotating shaft (-1) A worm wheel (IC) attached to one end meshes with the worm wheel 14, (14 is a chain that transmits the rotation of the drive motor Igl to the horizontal shaft of the ohm, and φ is a worm fixed to the rotating shaft (-)) , (J is fixed to the eccentric ring (015) and meshed with the same worm ψ, and the rotation of the drive motor (-) is transmitted to the power transmission mechanism (brown ~ (through force to the eccentric ring (0153K), Rotate the eccentric ring (O15) and push out the reinforcing n-ru (040~C04ct) in a convex shape with respect to the intermediate a-ru (03) and work roll (02). The work roll (02) is bent in the opposite direction to obtain a flat rolled material (1).

In the shape control device, the fixed shaft (05g) wears out,
If its diameter is uneven, each reinforcing roll (04g)
~(04) may come into contact with the intermediate roll (03) K due to uneven rolling blades, or there may be a gap between the reinforcing roll (04g) ~(04) and the intermediate roll (03). Fixed shaft (05) with eccentricity of rolls (04b) to (044)
It is necessary to adjust each reinforcing roll according to the wear of the chain 1b), but while the drive wall (Tashin) is installed on the housing (010), the same drive motor Ill and the eccentric ring (015) are attached to the chain 1b) and the worm (C). ) Worm wheel (d)
Since the rotating shaft (-) is connected via the worm (/1s type gear (-) and the drive source is the worm 1a), the reinforcement n-
(044) - (It is impossible to adjust the eccentricity of the 04 clause to 5 as above, and the reinforcement n-ru (04g) - (04 is the intermediate n-ru (03) K uneven rolling blade. or contact with
It is unavoidable that there will be a gap between the reinforcing rail, IIL/(04gn~(04) and the intermediate roll (03), and as a result, the intermediate roll (013 is the work roll (02) K
Due to uneven contact, the crown adjustment by reinforcing rolls (O4@) to (04) cannot be performed correctly.In order to make each roll contact the restraint, make sure that the fixed shaft (05, etc.) has the same diameter over its entire length. Maintenance is undesirable as it requires a lot of effort and significantly reduces work efficiency.

The present invention addresses the above-mentioned problems and includes a work roll, a set of two intermediate rolls that support the work roll, and a plurality of auxiliary rolls that support each of the intermediate rolls. In a multi-stage cluster rolling mill arranged vertically symmetrically, the reinforcing rolls are placed in the crown I1M! 1, the eccentric ring of the eccentric roll is rotated by a plurality of fluid pressure drive devices corresponding to the eccentric rings, and a rotation drive device for the eccentric ring for rotating the eccentric ring of the eccentric roll. a position detector and a servo valve that control each;
A multi-stage cluster rolling mill comprising a transmission mechanism for transmitting the movement of the fluid pressure drive device to an eccentric roller, and a rotary drive device for the eccentric ring is provided in a metal chock for reinforcing rolls. The aim is to
The plate thickness accuracy and shape accuracy of rolled material can be improved. Another object of the present invention is to provide an improved multi-stage cluster rolling mill that can improve work efficiency.

Next, the multi-stage cluster rolling mill of the present invention will be explained using an embodiment shown in FIGS. 5 to 10. (1) is a rolled material;
Rolling progresses in the direction of the arrow. (2) is a pair of upper and lower work rolls, (3) is an intermediate roll, and (4) is reinforcement.
(5) is the metal chock of the same reinforcing roll (4),
The bearing part of the fixed shaft (5@) is split in half, and the bearing part ferrule (5k) is used to reinforce the cylinder. The supporting frame of the same metal chip (5) is
) is a metal chock of the intermediate n-ru (3), and each set of two intermediate n-ru (3) can be displaced symmetrically with respect to the vertical plane through which the axes of the upper and lower work rolls (2) pass. It has become. Ma-C (8) is a work roll metal chock, (9
) is the lowering device, QI is the housing, aυ is the work roll (2) the hydraulic cylinder for applying the bending force, (13tLl is the intermediate roll (3) the hydraulic cylinder for applying the K bending force, α4 is the metal chock for the reinforcing roll (5) Hydraulic cylinder for lifting, (l□□□ is an eccentric ring, which is fitted to the reinforcing roll (4). Also, the supplementary roll (4) is connected to the fixed shaft C3t.
The bearing eccentric ring a1 of each reinforcing roll (4) is divided into a plurality of parts perpendicular to the axial direction of ).Also, the reinforcing roll (
4) is rotatably supported via an inner ring fitted to the eccentric ring Q9 and a cylindrical roller thereon. Multiple fluid pressure drive devices with straddle e corresponding to eccentric ring accommodation 9, accommodation η
A pinion rotated by the same fluid pressure drive device,
(1gg) (184) is the rack meshed with the same binion (1?>), and the same rack (18g) is the fan gear (191
), and the rack (18h) also meshes with the sector gear <19k
). In addition, each of the above-mentioned fluid pressure drive devices a
The fluid pressure driving device αQ is automatically controlled by the position detector and the servo pulp (not shown). In addition, each of the above devices ae-(
The eccentric ring rotation drive device constructed by (a) is provided in the reinforcing roll metal chock (5).

Next, the operation of the multi-stage cluster rolling mill will be explained.

When the male nion α is rotated by the operation of the fluid pressure drive device (1e) installed on the reinforcing roll metal chuck (4), the rack (18, Cl8k) is rotated as shown in Fig. 8.
) move in opposite directions, and as shown in Figure 10,
A fan-shaped gear meshing with each rack (18E) (187)
? (194) (19k) is the center for 1iX-XK
Rotate eccentrically (9t) slightly. As a result, the axial center of the reinforcing roll (4) is displaced, and the intermediate roll (3) and the workpiece that are in contact with the reinforcing sole (4) The roll (2) is bent as shown in Fig. 3, and the crown adjustment is performed.However, before this, the fluid pressure drive device a is automatically controlled by the position detector (a), the servo pulp and the K. Then, as shown in Fig. 11, the reinforcing roll (4'), the intermediate roll (3'), and the work roll (2) are brought into uniform contact with a low-pressure blade so that there are no gaps. This is used as the origin when performing crown adjustment, and then, as described above, the axial center position of the reinforcing roll is displaced by a predetermined eccentric amount to perform accurate crown adjustment.

As mentioned above, in the multi-stage cluster rolling mill of the present invention, a fluid pressure drive device operated by hydraulic pressure or the like is used as the drive source when changing the axial center position of the reinforcing rolls, so the eccentricity and roll It is possible to control the reduction blade automatically.

Therefore, the reinforcing roll and the intermediate roll, and the intermediate roll and the work roll are brought into contact with the low-reduction blade so that there are no gaps, and this is used as the origin when adjusting the crown of the intermediate roll and work roll, and then the desired crown amount is achieved. It is possible to adjust the crown by making the reinforcing plate eccentric, and it is possible to greatly improve the plate thickness accuracy and shape accuracy of the rolled material. In addition, even if the reinforcing roll shaft, etc. becomes uneven due to wear, the eccentricity of each reinforcing roll can be adjusted for each reinforcing roll according to the wear of the reinforcing roll shaft, etc., and the reinforcing roll shaft, etc. can be made to have the same diameter over its entire length. This eliminates the need for maintenance and repair work, improving work efficiency.

Although the present invention has been described above with reference to embodiments, it goes without saying that the present invention is not limited to such embodiments (and that various design modifications may be made without departing from the spirit of the present invention). be.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional front view showing a reinforcing roll of a conventional multi-stage cluster rolling mill, Fig. 2 is an explanatory diagram showing the crown adjustment state of the reinforcing roll, and Fig. 3 is an explanatory diagram of the action of the reinforcing roll.
Figure 4 is a side view showing a conventional rotational drive device for an eccentric ring.
FIG. 5 is a side view showing an embodiment of a multi-stage cluster rolling mill according to the present invention, FIG. 6 is an axial cross-sectional view of a reinforcing roll taken along the line VI-Vl in FIG. 5, and FIG. View from the arrow in Figure 6 -
■A cross-sectional view along IMK, Figure 8 is a cross-sectional plan view along the arrow line - 5 sectional view along X-XIIK-J
Figure IIIJ is an explanatory diagram of the action. (1)--One pressure heron material, (2+-m-work roll, (3
1--Intermediate roll, (4)-m-reinforcement roll, (5)
-m: Metal chock for reinforcing roll, 0-m-eccentric ring, (te---fi body pressure [dynamic device, CIT) (18
(18A) (19g) (19-m-transmission mechanism, 4-m-position detector. Sub-agent: Patent attorney, 2 non-Kaihon important documents, 2 figures, 3 figures, 9 figures, Drops, 11 figures.

Claims (1)

[Claims] In a multi-stage cluster rolling mill in which a work roll, a set of two intermediate rolls that support the work roll, and a number of auxiliary rolls that support each intermediate roll are arranged vertically symmetrically, the reinforcement The roll is a split type eccentric roll so that the crown can be adjusted, and an eccentric ring rotation drive device for rotating the eccentric ring of the same eccentric roller is provided with a plurality of fluid pressure drive devices corresponding to the eccentric ring, It is composed of a position detector and a servo valve that control each of the fluid pressure drive devices, and a transmission mechanism that transmits the movement of the fluid pressure drive device to the eccentric ring. A multi-stage cluster rolling mill characterized by being installed in a block.