JP2818121B2 - Bending roll machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bending roll machine for bending a long plate used in a shipbuilding or the like.

[0002]

2. Description of the Related Art As shown in FIGS. 7 and 8, a conventional bending roll machine includes a lower roll 32, 33 facing below an upper roll 31, and a plurality of lower rolls receiving the respective lower rolls. The backup rolls 34 and 35 are arranged, and the plate is bent by passing the plate between the upper roll 31 and the lower rolls 32 and 33.

In the above-mentioned bending roll machine, in order to cope with a change in the thickness of a plate material to be bent and a bending process of an end portion of the plate material, an upper roll 31 and lower rolls 32, 33 through which the plate material is inserted.
It is necessary to have a structure for appropriately changing the interval between the two.

[0004] As a structure for adjusting the roll interval, there is a structure proposed in JP-A-6-182449. In this proposed bending roll machine, as shown in FIG. 9, the bearing members 37, 38 of the lower rolls 32, 33 and the bearings of the lower backup rolls 34, 35 are mounted on a base 36 arranged below the roll machine. The members (not shown) are divided, and drive mechanisms 39 and 40 for movement are connected to the bearing members 37 and 38, respectively.
The lower roll 3 with respect to the upper roll 31 is moved by moving
The positions of 2, 33 are changed.

[0005]

However, as shown in FIG. 6, a bending roll machine for bending a long plate material has a large number of lower backup rolls 34, 3 as a whole.
In the method of moving the bearing members of each lower roll and each lower backup roll in conjunction with each other, the moving guide mechanism and the driving mechanism are inevitably large, and the structure is increased. There are complicating issues.

In order to move the lower rolls 32 and 33, it is necessary to move the lower roll and the lower backup rolls 34 and 35 as one body. In such a structure, the two rolls may not always move integrally.

That is, even if the lower rolls 32, 33 and the lower backup rolls 34, 35 are in close contact with each other before the movement, the movement between the rolls may be caused by a shift in the operation timing of each drive mechanism or play on the feed shaft. There is often a difference in the amount, and there is often a gap between the lower roll and the lower backup roll after moving. However, the formation of such a gap lowers the support effect as a backup roll and lowers the support rigidity of the lower roll.

Therefore, the present invention solves the above-mentioned problems and, by a simple structure, allows the lower roll to move relative to the upper roll while keeping the lower roll and the lower backup roll in close contact with each other. It is intended to provide.

[0009]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, according to the present invention, a pair of opposed lower rolls and a lower backup roll receiving the lower roll are arranged below the upper roll. In a bending roll machine in which a plurality of rolls are arranged in the axial direction of a lower roll, a lower roll and each lower backup roll are rotatably mounted on a single movable base, and the movable base can adjust a feed amount. The drive mechanism is connected, and the movable table can be moved in the horizontal direction by moving the movable drive mechanism so that the upper roll and the lower roll approach and separate from each other.

[0010]

As described above, the lower roll and the lower backup roll are attached to one movable base, and the lower roll and the lower backup roll are integrated by moving the movable base relative to the upper roll. The distance between the upper roll and the lower roll can be changed while maintaining the close contact between the two rolls.

[0011]

1 to 5 show a bending roll machine according to an embodiment. As shown in the figure, on both sides of the base 1, portal frames 2, 2 are installed. Inside each portal frame 2, an upper girder 3 and an elevating device 9 for lifting and lowering it are provided. Have been. An upper roll 4 and upper backup rolls 11 and 12 for receiving the upper surface of the upper roll 4 are rotatably supported on the lower surface of the upper girder 3.

Below the upper roll 4, a pair of lower rolls 5 and 6 are horizontally opposed, and each of the lower rolls 5 and 6 is disposed.
Are rotatably supported by a movable table 10 provided above the base 1 via bearing members 7 and 8, respectively. One end of each of the lower rolls 5 and 6 is connected to a drive motor 30 via a joint 29, and the drive motor 30
, The lower rolls 5 and 6 rotate in the same direction in conjunction with each other.

Below the lower rolls 5, 6, a plurality of sets of lower backup rolls 13, 14 for supporting the lower surfaces of the lower rolls 5, 6 are provided at predetermined intervals in the axial direction, respectively.

The lower backup rolls 13 and 14 are
As shown in FIG.
Rollers 15, 15 and each roller 15, 1
5 is rotatably supported on the movable base 10 via bearing members 16 and 17, respectively.

The movable base 10 to which the lower rolls 5, 6 and the lower backup rolls 13, 14 are mounted has a guide portion 20 provided on the lower surface as shown in FIGS. 4 and 5, and the guide portion 20 is mounted on the upper roll. 4 is fitted into a dovetail-shaped guide groove 19 provided on the base 1 so as to be orthogonal to the base 4.
And the guide groove 19 can slide in a direction orthogonal to the upper roll 4.

On the other hand, between the side surface of the movable base 10 and the columns 18 of the gate-shaped frames 2 and 2, the movable base 10 is relatively moved with respect to the upper roll 4 as shown in FIGS. Is provided.

In this moving drive device 21, a screw shaft 22 is projected from the column 18 of each of the portal frames 2 and 2, and the tip of the screw shaft 22 is locked on the side surface of the movable base 10. The screw shaft 22 inside the column 18 of the frames 2 and 2
A screw hole 24 provided in the worm wheel 23 is screwed onto the peripheral surface of the worm wheel 23. As shown in FIG. 1, a worm 25 meshed with the worm wheel 23 is connected by an interlocking transmission shaft 26 extending between the portal frames 2 and 2, and a gear is provided at the center of the interlocking transmission shaft 26. A drive motor 28 is connected via a speed reducer 27 made of the same.

In the above structure, when the drive motor 28 operates, the interlocking transmission shaft 26 and the worm wheel 23 rotate, and the screw shaft 22 advances and retreats in the axial direction due to meshing of the screws. The movable base 10 is propelled by the movement of the screw shaft 22, and the upper roll and the lower roll are horizontally moved in a direction in which the upper roll and the lower roll approach and separate by the guide of the guide portion 20 and the guide groove 19.

This embodiment has the structure as described above. When the drive motor 28 of the moving drive device 21 is operated, the movable base 10 slides on the base 1 in the horizontal direction.
The lower rolls 5 and 6 and the lower backup rolls 13 and 14 attached to the upper part move horizontally with respect to the upper roll 4 integrally.

By this movement, as shown in FIG. 6, one lower roll 5 approaches the upper roll 4, the other lower roll 6 separates, and each lower roll 5, 6 moves with respect to the upper roll 4. It will be located in an asymmetric position.

In this state, the end of the plate can be bent between the upper roll 4 and the lower roll 5 which approach each other. Further, by setting the interval between the upper roll 4 and each of the lower rolls 5 and 6 according to the thickness of the plate material, it is possible to cope with a change in the plate thickness.

In the above structure, the sliding amount of the lower rolls 5 and 6 and the lower backup rolls 13 and 14
Is regulated by the pitch of the thread between the worm wheel 23 and the worm wheel 23. By detecting the amount of movement of the operating table 10 with a detector or the like and controlling the operation of the drive motor 28 based on the detection signal, The lower backup roll can be positioned at an appropriate position.

Further, since the movable base 10 and the screw shaft 22 are connected to the columns 18 of the gate-shaped frames 2 and 2 by screw threads, they are added to the lower rolls 5 and 6 and the lower backup rolls 13 and 14 by bending. The horizontal component force is reliably received by the column 18, and a sufficient bending force can be exerted.

In the above embodiment, the moving driving device 2
Although the driving of No. 1 is performed by screwing the screw thread of the screw shaft peripheral surface and the screw hole of the worm wheel, this driving method is not limited. For example, a combination of a ball screw and a ball screw nut, a pinion and A gear guide mechanism combined with a rack may be used.

[0025]

As described above, according to the present invention, the lower roll and the lower backup roll are mounted on a single movable base, and the movable base is moved horizontally with respect to the upper roll. The rolls can be moved together while keeping the rolls in close contact. Therefore, the supporting strength of the lower roll can be stably maintained, and the interval between the upper roll and the lower roll can be adjusted with high accuracy.

Also, since only the movable table needs to be moved,
The structure of the moving drive can be greatly simplified as compared with a structure in which the bearing members of each roll are moved separately, and the manufacturing cost of the bending roll machine can be reduced.

[Brief description of the drawings]

FIG. 1 is a front view showing a bending roll machine according to an embodiment.

FIG. 2 is a side view of a bending roll machine.

FIG. 3 is a vertical sectional front view of the above.

FIG. 4 is a longitudinal sectional side view showing the moving drive device according to the first embodiment;

FIG. 5 is a vertical sectional front view of the moving drive device according to the first embodiment;

FIG. 6 is a longitudinal sectional view showing an arrangement relationship after movement of each roll.

FIG. 7 is a front view showing a conventional example.

FIG. 8 is a side view of the above.

FIG. 9 is a longitudinal sectional view showing a conventional roll moving mechanism.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Base 2, 2 Gate frame 4 Upper roll 5, 6 Lower roll 7, 8 Bearing member 10 Movable table 13, 14 Lower backup roll 16, 17 Bearing member 18 Prop 21 Moving drive 22 Worm wheel 26 Interlocking transmission shaft 28 Drive motor

Claims (1)

(57) [Claims] 1. A bending roll in which a pair of opposed lower rolls and a lower backup roll for receiving the lower roll are arranged below the upper roll, and a plurality of sets of the lower backup rolls are arranged in the axial direction of the lower roll. In the machine, the lower roll and each lower backup roll are rotatably mounted on a single movable table, and a movable drive mechanism capable of adjusting a feed amount is connected to the movable table, and by operating the movable drive mechanism,
A bending roll machine wherein the movable table is movable in a horizontal direction in which an upper roll and a lower roll approach and separate from each other.