JPH0783898B2 - Bridle roll drive - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a bridle roll drive device having an improved arrangement and drive structure of a bridle roll in a tension leveler that applies tension to a strip and corrects its shape.

[Prior Art] As a bridle roll drive device of this type, Japanese Patent Laid-Open No. 61-
The device shown in Japanese Patent No. 30223 has been proposed. As shown in FIG. 2, this device uses specific rolls 2d, 3a of a bridle roll 3 arranged on the inlet side and the outlet side of the leveler 1 as a main motor 4
Drives at a predetermined speed difference by 0, and other rolls 2
By controlling the a, 2b, 2c, 3b, 3c, 3d by torque controllable motors 7a, 8a, 9a, 7b, 8b, 9b via the planetary gear units 4,5, 6, respectively, The torque can be adjusted to a predetermined set value with high accuracy and in a wide range.

[Problems to be Solved by the Invention] However, in the above device, the bridle roll 2,
Since the three roll groups are arranged in a row and the planetary gear device 10 for imparting a speed difference is arranged in the central part of both roll groups to form three blocks A, B, C, the entire device is There was a problem of increasing the size. In addition, since the differential motor 11 connected to the planetary gear device 10 provides the differential power to all the rolls 2a, 2b, 2c, 2d of the entrance side roll group, the differential motor 11 with large power is used. Motor 11 was needed. Further, the structure is such that power is transmitted from the main motor 40 and the planetary gear device 10 to the specific rolls 2d, 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, which caused chatter marks and mesh noise.

Therefore, an object of the present invention is to solve the above-mentioned problems, downsize the entire apparatus, reduce the power of the differential motor, and maintain the correction accuracy with high accuracy. Is to provide.

[Means for Solving the Problems] In order to achieve the above-mentioned object, the present invention comprises a bridle roll (2, 3) which is arranged on the inlet side and the outlet side of the leveler (1) and applies tension to the strip (14). Roll group (2a ~ d, 3a
~ D) are arranged facing each other in a zigzag pattern in the vertical direction,
Specific rolls (3) at any stage of the roll groups (3a-d) on the delivery side
A planetary gear having a gear (16) on the shaft of (a) and ring gears (4a, 5a, 6a) meshed in series with the above gear (16) on the remaining rolls (3b to d) on the output side thereof. Ring gears (4a, 5a, 6a, 6a, 5c, 6c) of the device (4,5, 6) are connected, and ring gears (4a, 5a, 6a, 6a, 10a) with planetary gearing (4,5,6,
10) Revolving shafts (4c, 5c, 6c, 10c) are connected, and ring gears (4a, 6a) facing each other on the output side and the input side are intermediate gears (18, 19)
With the drive gear (17) and the drive gear (1
The main motor (40) is installed in 7), and the roll group (2a
~ D) any one of the above-mentioned specific rolls (3a) on the shaft of the sun gear (10d) of the planetary gear unit (10) connected to the rolls.
Connect a differential motor (11) that gives a speed difference compared to
A motor (7,8,9) capable of controlling torque is connected to the sun gear shafts of all the above-mentioned incoming and outgoing sides of the planetary gear device (4,5,6) excluding the sun gear (10d) shaft of the planetary gear device. Is.

[Operation] The driving force of the main motor 40 is transmitted from the drive gear 17 to the ring gears 4a, 5a, 6a (including the gear 16) meshed in series on the inlet side and the outlet side, and the roll groups 2a to d, 3a to d The rolls are alternately driven to rotate in opposite directions. One specific roll 2d has a predetermined speed difference as compared with the other specific roll so as to give a constant elongation rate to the strip 14 by the driving force of the differential motor 11 input from the sun gear shaft of the planetary gear device. A predetermined tension is applied to the strip 14 which is driven to decelerate and passes between the specific rolls 2d and 3a. The remaining rolls 2a-c,
3b-d are torque controllable motors 7,8,9 connected to the shafts of the sun gears 4d, 5d, 6d of the planetary gear units 4,5,6 to a predetermined set value corresponding to each roll. Adjusted,
As a result, slippage between the surface of the strip 14 passing through the roll group and the outer peripheral surface of the roll is prevented, and a high quality strip 14 is manufactured.

Thus, the two roll groups 2a to d, 3a to d are arranged so as to face each other, the main motor 40 is arranged in the central portion, and the drive gear 17 thereof is connected to the rolls of the planetary gear units 4,5,6. Ring gear 4
Since it meshed with a, 5a and 6a in the same plane,
It's compacted in one block. Further, since the differential motor 11 drives only a specific roll, the differential motor 11 needs only a small power. Further, from the drive gear 17 to the ring gears 4a, 5 in the same plane.
Since the structure transmits power to the gears a and 6a and the gears, the bevel gear with uneven rotation can be eliminated, and the correction accuracy can be maintained at high accuracy.

[Embodiment] A preferred embodiment of the present invention will be described below in detail with reference to the accompanying drawings.

In FIG. 1, reference numeral 1 is a leveler in which work rolls 15 are arranged above and below so as to force the shape of the strip 14, and tension is applied to the strip 14 passing through the leveler 1 on the inlet side and the outlet side of the leveler 1. Bridle rolls for giving 2,
3 are arranged. The roll groups 2a to 2d and 3a to 3d constituting the bridle rolls 2 and 3 are arranged in a zigzag pattern in the vertical direction and face each other in close proximity to each other.
A gear 16 is fixed to the shaft of a specific roll 3a (reference roll) immediately after the leveler 1 in 3d. The remaining rolls 3b, 3c, 3d of the output side roll groups 3a-3d are planetary gears 4b of planetary gear units 4,5, 6 having ring gears 4a, 5a, 6a meshed in series with the gear 16 in sequence. 5b, 6b revolution axis (carrier) 4c,
It is connected to 5c and 6c.

On the other hand, each of the rolls of the entrance-side roll groups 2a to 2d has planetary meshing devices 4,5, which have ring gears 4a, 5a, 6a, 10a meshing sequentially in series.
6,10 Planetary gears 4b, 5b, 6b, 10b Revolving shafts 4c, 5c, 6c, 10c are connected, and specific roll 2d (reference roll) just before leveler 1
The input DC of the sun gear 10d of the planetary gear device 10 connected to is connected to a differential DC motor 11 for decelerating with a predetermined speed difference compared to the output side specific roll 3a. And the sun gears 4d, 5d, 6 of the remaining planetary gear units 4,5, 6
DC motors 7a, 8a, 9a, 7 with torque control are available on the input shaft of d.
b, 8b, 9b are connected.

Further, a main motor 40 equipped with a drive gear 17 is arranged at the center of both the output side roll groups 2a to 2d and 3a to 3d, and the drive gear 17 is opposed to the output side via intermediate gears 18 and 19. It meshes with the pair of ring gears 4a and 6a in the same plane. Then, the differential motor 11 and the torque control motors 7a, 8a, 9a, 7b,
8b and 9b are connected to an automatic control device 20 by a direct digital computer system, which calculates the tension fluctuation of the strip 14 in the strip running detected by the tension meter 21 and differentiates it based on its output signal. The speed of the motor 11 is controlled, and the torque control motors 7a, 8a, 9a, 7b,
The torque of 8b and 9b is controlled to a predetermined set value corresponding to the torque of each roll.

With this configuration, the driving force of the main motor 40 is the driving gear 17
Via the intermediate gears 18 and 19, the entrance / exit roll groups 2a to 2d and 3a to 3
It is transmitted to the gear 16 and the ring gears 4a, 5a, 6a meshed in series with each other. Further, the sun gear 10d of the planetary gear device 10 of the entry side reference roller 2d is driven by the differential motor 11, and the sun gears 4d, 5d, 6 of the planetary gear devices 4, 5 and 6 for torque control are driven.
d is driven by the torque control motors 7a, 8a, 9a, 7b, 8b, 9b. As a result, the rolls of the two roll groups 2a to 2d and 3a to 3d are alternately driven to rotate in opposite directions, so that the strip 14 and the bridle surface passing therethrough are continuously tensioned without causing slippage. Of excellent strips will be produced.

Since the entire drive system is connected to the closed loop via the strip 14, the power is circulated, the power of the main motor 40 is reduced, and the input side motors 7a, 8a, 9a, and 11 do not generate electricity. Electricity can be recovered, and power costs can be significantly reduced.

The reference rolls on the entrance and exit sides are not limited to the rolls 2d and 3a of the embodiment, and the ring gear meshing with the drive gear 17 is not limited to those of the embodiments 6a and 4a, and may be any. Further, although one roll group is on the output side and the other roll group is on the input side, these may be reversed.

[Effects of the Invention] In summary, according to the present invention, the following excellent effects are exhibited.

(1) Both roll groups of the bridle roll are arranged so as to face each other, and a main motor is arranged between the roll groups so that their drive gears mesh with the ring gear of the planetary gear unit connected to each roll in the same plane. As a result, the entire device is integrated into one block, which makes it compact.

(2) Since only the specific roll is driven by the differential motor, the differential motor can be made to have a small power.

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

[Brief description of drawings]

FIG. 1 is a diagram showing an embodiment of a bridle roll driving device according to the present invention, and FIG. 2 is a diagram showing a conventional bridle roll driving device. In the figure, 1 is a leveler, 2 and 3 are bridle rolls, and 2a to 2d and 3a.
~ 3d rolls, 4,5,6,10 planetary gears, 4a, 5a, 6a, 1
Reference numeral 0a is a ring gear, 7a, 8a, 9a, 7b, 8b and 9b are torque control motors, 11 is a differential motor, and 40 is a main motor.

Front page continued (72) Inventor Yasumasa Hirata No. 1 Shin-Nakahara-cho, Isogo-ku, Yokohama-shi, Kanagawa Ishi Kawashima Harima Heavy Industries, Ltd. Yokohama No. 2 Factory (72) Inventor Yoshikazu Uehara 1082, Mano-cho, Otsu-shi, Shiga Prefecture Ishikawajima Seiki Co., Ltd. (56) Reference JP-A-48-44151 (JP, A) JP-A-61-30223 (JP, A)

Claims (1)

[Claims] 1. Roll groups (2a to d, 3a to d) of bridle rolls (2, 3) arranged on the inlet side and the outlet side of the leveler (1) for applying tension to the strip (14) are opposed to each other. Are arranged in a zigzag pattern in the vertical direction, and roll groups (3a ~
The gear (16) is provided on the shaft of the specific roll (3a) at any stage in (d), and the ring gears (3b to d) on the output side of the ring are meshed in series with the gear (16) in sequence. 4a, 5
a, 6a) planetary gear unit (4,5,6) revolution shaft (4c, 5)
c, 6c), and planetary gear units (4,5, 6 ,, 10a) having ring gears (4a, 5a, 6a, 10a) meshed in series with each roll of the entrance side roll group (2a to d) 10) Revolution axis (4c, 5c, 6c, 1
0c) and the ring gear (4a, 6
a) meshes the intermediate gears (18, 19) with the drive gear (17) and the drive gear (17) is provided with a main motor (40), and any of the entrance side roll groups (2a to d) To the sun gear (10d) of the planetary gear unit (10) connected to the roll, a differential motor (11) that gives a speed difference compared to the specific roll (3a) is connected, and the planetary gear is connected. All the above planetary gear units (4,
5,6) sun gear shaft with torque controllable motor (7,8,9)
A bridle roll driving device characterized by connecting the above.