JPH01122615A - Driving device for bridle roll - Google Patents

Abstract

PURPOSE:To miniaturize a device and to improve the correcting accuracy by arranging groups of bridle rolls respectively face to face, connecting a differential motor to special rolls in one group and arranging motors capable of controlling torque to rolls in the residual group. CONSTITUTION:Each group of rolls 2a-2d, 3a-3d of groups of bridle rolls 2, 3 are arranged vertically face to face and a differential DC motor 11 is connected to a specified roll (reference roll) 2d of the input side. The driving force of a main motor is transmitted to a gear 16 and ring gears 4a, 5a, 6a through gears 17, 18, 19 and the sun gear 10d of the planetary gear 10 is driven by the motor 11. Motors 7a-9a, 7b-9b for controlling torque drive planetary gears 4, 5, 6. Hereby, the strip is prevented from slipping on each roll of both groups of rolls 2, 3. Accordingly, the driving device is miniaturized and the correcting accuracy of a leveller 1 is upgraded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a bridle roll drive device that improves the arrangement and drive structure of bridle rolls in a tension leveler that applies tension to a strip while correcting its shape.

[Prior art] This type of bridle roll drive device is disclosed in Japanese Patent Application Laid-open No. 61
A device shown in Japanese Patent No. 30223 has been proposed.

As shown in FIG.
is driven by the main motor 4o at a predetermined speed difference, and the other rolls 2a, 2b, 2c, 3b, 3c, 3d can be torque-controlled via the planetary gear devices 4, 5.6, respectively -E-47a, 8a , 9a, 7b,
8. b.

By controlling the drive at 9b, the torque of each roll can be adjusted to a predetermined set value with high precision and over a wide range.

[Problems to be solved by the invention] However, in the above device, the bridle roll 2
, 3 roll groups are arranged in horizontal rows, and a planetary gear device 10 etc. for giving a speed difference to the central part of both roll groups is arranged.

Since B and C are formed, there is a problem in that the entire device becomes larger. In addition, since the structure is such that the differential motor 11 connected to the planetary gear device 10 applies differential power to all the rolls 2a, 2b, 2c, and 2d of the entry side roll group, the A motor 11 was required. Furthermore, the structure is such that power is transmitted from the main motor 40 and the planetary gear device 10 to the specific rolls 2d and 3a via the bevel gears 12.13, and since there is uneven rotation in the power transmission of the bevel gears 12.13, the strip 14 There was a change in the tension applied to the shaft, which caused chatter marks and meshing noise.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to solve the above-mentioned problems and provide a bridle roll drive system that can make the entire device more compact, reduce the power of the differential motor, and maintain high level of straightening accuracy. The purpose is to provide equipment.

[Means for Solving the Problems] In order to achieve the above object, the present invention arranges roll groups of bridle rolls which are placed on the entry side and the exit side of the level and apply tension to the strip, respectively, facing each other. A gear is provided on the shaft of a specific roll of the other roll group, and the remaining rolls of the roll group are connected to the revolving shaft of a planetary gear device having a ring gear that sequentially meshes with the gear in series, and each roll of the other roll group is sequentially connected. For differential use, which is connected to the revolving shaft of a planetary gear device having a ring gear meshing in series, and which gives a speed difference to the sun gear shaft of the planetary gear device of the other specific roll, compared to the other specific roll. The motor is connected to the sun gear shaft of the remaining planetary gear unit, and a torque controllable motor is connected to the sun gear shaft of the remaining planetary gear unit, and a main motor is provided that has a common drive gear that meshes with each of the predetermined ring gears on the input and output sides. .

[Operation] The driving force of the main motor is transmitted from the drive gear to the ring gears (including gears) meshed in series on the entry and exit sides, and alternately drives each roll of the roll group to rotate in opposite directions. One specific roll is driven at a reduced speed with a predetermined speed difference compared to the other specific roll so as to give a constant elongation rate to the strip by the driving force of the differential motor input from the sun gear shaft of the planetary gear device. , applying a predetermined tension to the strip passing between specific rolls. Each of the remaining rolls is torque-adjusted to a predetermined setting for each individual roll by a torque-controllable motor connected to the sun gear shaft of the planetary gear system, which causes the strip surface passing through the roll group to This prevents slippage between the strip and the outer circumferential surface, producing a high-quality strip.

In this way, both roll groups are arranged facing each other, the main motor is placed in the center, and its drive gear meshes with the ring gear of the planetary gear connected to each roll in the same plane, so that the entire device is It is combined into one block and becomes compact. Furthermore, since the differential motor drives only a specific roll, a differential motor with low power is sufficient. Furthermore, since the structure is such that power is transmitted from the drive gear to the ring gear and gears in the same plane, it is possible to eliminate the need for a bevel gear that rotates unevenly, and it is possible to maintain high correction accuracy.

[Embodiment] Hereinafter, a preferred embodiment of the present invention will be described in detail based on the accompanying drawings.

In FIG. 1, 1 is a leveler with work rolls 15 arranged above and below to force the shape of the strip 14;
Bridle rolls 2.3 are arranged on the entry and exit sides of the leveler 1 for applying tension to the strip 14 passing through the leveler 1. Bridle roll 2,3
The respective roll groups 2a to 2d and 3a to 3d forming the
are arranged in a staggered manner in the vertical direction and are closely opposed to each other, and a gear 16 is attached to the shaft of a specific roll 3a (reference roll) immediately after level 14 in the exit roll groups 3a to 3d.
is fixed at 6. Further, each of the remaining rolls 3b, 3c, 3d of the exit roll group 3a to 3d is a planetary gear 4b of a planetary gear device 4.5.6 having ring gears 4a, 5a, 6a sequentially meshed in series with the gear 16; 5b, 6b's revolution axis (carrier) 4c, 5c.

Connected to 6C.

On the other hand, each roll of the entrance roll group 28 to 2d is sequentially meshed with ring gears 4a, 5a, and 6a in series.

The revolution axis 4c of the planetary gears 4b, 5b, 6b, 10b of the planetary meshing device 4, 5, 6, 10 having 10a
, 5c.

5c and 10c, and a planetary gear device 10 connected to a specific roll 2d (reference roll) immediately before the leveler 1.
The input shaft of the sun gear 10d is provided with the output side specific roll 3a.
A differential DC motor 11 is connected to drive the motor at a reduced speed with a predetermined speed difference compared to the motor.

and the remaining sun gear 4d of the planetary gear set 4.5.6
, 5d, and 6d are connected to torque-controllable DC motors 7a, 8a, 9a, 7b, 8b, and 9b.

In addition, a main motor 40 equipped with a drive gear 17 is disposed in the center of both roll groups 28 to 2d and 3a to 3d on the entry and exit sides, and the drive gear 17 is connected to the opposing roll groups on the entry and exit sides via intermediate gears 18 and 19. One set of ring gear 4a.

It is meshed with 6a in the same plane. and a differential motor 11 and torque control motors 7a and 8a.

9a, 7b, 8b, and 9b are connected to an automatic control device 20 based on a direct digital computer system, which calculates and processes tension fluctuations in the strip 14 during threading detected by a tension meter 21, and converts the tension into an output signal. The speed of the differential motor 11 is controlled based on the torque control motors 7a and 8a.

The torques of the rollers 9a, 7b, 8b, and 9b are controlled to predetermined set values in accordance with the torque of each individual roll.

According to this configuration, the driving force of the main motor 40 is transferred to the drive gear 17 via the intermediate gears 18 and 19 to the entrance and exit roll group 2a.
It is transmitted to gears 16 and ring gears 4a, 5a, and 6a that are meshed in series with each other. Further, the sun gear 10d of the planetary gear unit 10 of the entry side reference 0-RA 2d is driven by the differential motor 11, and the sun gears 4d, 5d, 6d of the planetary gear unit 4.5.6 for torque control are driven by the torque control. Control motors 7a, 8a, 9a, 7b, 8b, 9
driven by b. As a result, both roll groups 28~
By rotating each of the rolls 2d and 3a to 3d alternately in opposite directions, tension is continuously applied to the passing strip 14 and the priddle surface without slipping, and a strip of excellent quality is manufactured. That will happen.

In addition, since the entire drive system is connected in a closed loop via the strip 14, the power circulates, and the power of the main motor 40 is reduced, and the power of the input side motors 7a, 8a, 9a is reduced.
, and 11 can generate power and recover electric power, resulting in a significant reduction in power costs.

In addition, the reference roll on the entrance/exit side is roll 2d of the embodiment,
The ring gear meshing with the drive gear 17 is not limited to the gears 6a and 4a of the embodiment, but may be any gear. Furthermore, although one roll group is placed on the exit side and the other roll group is placed on the entry side, these may be reversed.

[Effects of the Invention] In summary, the present invention exhibits the following excellent effects.

(1) Both roll groups of the bridle roll are arranged facing each other, a main motor is placed between the roll groups, and its driving gear is meshed in the same plane with a ring gear of a planetary gear device connected to each roll. Therefore, the entire device is integrated into one block, making it compact.

(2) Since the differential motor drives only a specific roll, the differential motor can be made with low power.

(3) Since the structure is such that power is transmitted from the drive gear to the ring gear and gears in the same plane, a bevel gear with uneven rotation can be eliminated, and high correction accuracy can be maintained.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing an embodiment of a bridle roll drive device according to the present invention, and FIG. 2 is a diagram showing a conventional bridle roll drive device. In the figure, 1 is a leveler, 2 and 3 are bridle rolls, 2a~
2d, 3a to 3d are roll groups, 4°5.5.10 are planetary gears, 4a, 5a, 6a. 10a halling gear, 7a, 8a, 9a, 7b. 8b and 9b are torque control motors, 11 is a differential motor, and 40 is a main motor. Patent applicant Ishikawajima Harima Heavy Industries Co., Ltd. Ishikawajima Seiki Co., Ltd.

Claims (1)

[Claims] Groups of bridle rolls that are placed on the entry and exit sides of the level and apply tension to the strip are arranged facing each other, and a gear is provided on the shaft of a specific roll in one roll group, and the gear meshes with the gear in series. The remaining rolls of the roll group are connected to the revolving shaft of a planetary gear device having a ring gear that meshes with the other roll group in sequence, and each roll of the other roll group is connected to the revolving shaft of a planetary gear device having a ring gear meshing in series, and the specific roll is A differential motor that provides a speed difference between the specific roll and the other specific roll is connected to the sun gear shaft of the planetary gear device, and a torque controllable motor is connected to the sun gear shaft of the remaining planetary gear devices. A bridle roll drive device, characterized in that a main motor is connected and has a common drive gear that meshes between predetermined ring gears on the entrance and exit sides.