JPH0337761Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] This invention relates to a multi-roll forming machine for manufacturing steel pipes, shaped steel, etc.

[Conventional technology]

In a multi-roll forming machine, it is rare that only one type of workpiece is exclusively formed, but rather many types of workpieces are formed. Therefore, when molding many types of workpieces, it is necessary to replace the forming roll with a molding roll appropriate for the type of workpiece.

Conventionally, replacing the forming rolls one by one requires work such as adjusting the gap between the rolls, which requires a lot of labor and requires stopping the multi-roll forming machine for a long time. To prevent this from happening, measures have been taken to replace the entire roll stand unit with a different one.

[Problem that the invention attempts to solve]

However, it is not easy to position and attach the heavy roll stand unit to the bed of the roll forming machine, and furthermore, the clutch, motor, etc. for driving the forming rolls are installed on one side of the roll forming machine. It is very difficult to install and remove the roll stand unit, and there are other problems such as the need to secure a storage area for the roll stand unit.

[Means for solving problems]

This invention was made in order to solve the problems of the above-mentioned conventional example, and the structure is such that a roll stand unit 2 is disposed on each side of a roll stand 1 having a polygonal prism shape, and these roll stands A plurality of stands 3 are arranged in multiple stages in each unit 2, and each stand 3 is provided with a gear case 4 and a forming roll 5 which are connected to each other by a connecting shaft. are respectively supported in support holes formed in the center of the disk 7, and a rotation gear 9 is provided on a predetermined portion of the disk 7, and the rotation gear 9 is meshed with the rotation pinion 10. The other disks 7 are brought into contact with the receiving roll 11, while a motor 13 is disposed on one side of the roll stand 1, and the gear case 4 closest to the motor 13 of the roll stand unit 2 is connected. This motor 13 on the shaft
can be connected by a main drive clutch 14.

[Effect]

As a result of implementing the above means, the roll stand unit 2 can be replaced by rotating the roll stand 1 which has a polygonal column shape and changing the position to the desired roll stand unit 2 arranged on each side of the roll stand 1. It can be performed.

〔Example〕

Hereinafter, the configuration of this invention will be explained with reference to the drawings showing one embodiment.

Reference numeral 1 denotes a roll stand in the shape of a polygonal prism, and roll stand units 2 are disposed on each side of the roll stand. Although the roll stand 1 has a triangular prism shape in the embodiment, it may have a square prism shape, a pentagonal prism shape, etc. depending on the type of workpiece. The roll stand units 2 arranged on each side of the roll table 1 each have a plurality of stands 3 arranged in multiple stages, and each stand 3 is provided with a gear case 4 and a forming roll 5. The gear cases 4 provided on each stand 3 are connected to each other by a connecting shaft (not shown).

The roll table 1 is supported at a plurality of predetermined positions on the side circumference by support holes formed in the center of the disk 7, and is disposed on the bed 8. Each disc 7 is attached to each roll stand unit 2.
A passing window 6 is formed, and a rotating gear 9 is provided on the outer periphery of a predetermined disc 7 (in the embodiment, the second disc from both sides). 9 is meshed with a rotating pinion 10 disposed on the bed 8, the other disc 7 is brought into contact with a receiving roll 11 disposed on the bed 8, and a predetermined portion of the disc 7 (in the embodiment, the disks on both sides and the center) can be fixed using fixing fittings 12 provided on the bed 8.

Furthermore, a motor 1 is mounted on one side of the roll table 1.
3 is arranged, and the roll stand unit 2
The motor 13 can be connected to a connecting shaft (not shown) of the gear case 4 closest to the motor 13 by a main drive clutch 14.

Next, the operation of replacing the roll stand unit will be described based on the embodiment of this invention having the above structure.

First, the fixation of the disc 7 by the fixing metal fitting 12 is released, and the connecting shaft of the gear case 4 of the roll stand unit 2 is separated from the main drive clutch 14. Next, by driving the rotation pinion 10, the rotation gear 9 is rotated to rotate the disk 7 by 120 degrees to the left or right, and the position is changed to a desired roll stand unit 2. And again,
Fix the disk 7 at that position with the fixing fittings 12,
Gear case 4 of the roll stand unit 2
The motor 13 is connected to the connecting shaft of the main drive clutch 1.
Connect by 4. With the above operations, the replacement of the roll stand unit is completed.

[Effect of idea]

As described above, the multi-stage roll forming machine of this invention is configured such that the polygonal column-shaped roll stand 1 is rotated and the desired roll stand units 2 are placed on each side of the roll stand 1. Since the roll stand unit 2 can be replaced by changing its position, it is easy to position the heavy roll stand unit, and the roll stand can be replaced in a short time and the multi-stage roll forming machine can be operated for a long time. It is possible to improve the operating efficiency without having to stop the roll stand unit for a long period of time, and since there is no need to secure a storage place for the roll stand unit, it has excellent effects such as increasing the work space.

[Brief explanation of the drawing]

Fig. 1 is a front view of a multi-stage roll forming machine according to this invention, Fig. 2 is a side view of the multi-stage roll forming machine,
FIG. 3 is a partial perspective view of the multi-roll forming machine. 1... Roll stand, 2... Roll stand unit, 3... Stand, 4... Gear case, 5...
... Forming roll, 7 ... Disk, 9 ... Rotating gear, 10 ... Rotating pinion, 11 ... Receiving roll, 13 ... Motor, 14 ... Main drive clutch.

Claims (1)

[Scope of utility model registration request] A roll stand unit 2 is arranged on each side of a roll table 1 having a polygonal column shape, and a plurality of stands 3 are arranged in multiple stages on each of these roll stand units 2, and each stand 3 is connected to each other by a connecting shaft. A connected gear case 4 and a forming roll 5 are provided, and a plurality of predetermined locations on the side periphery of the roll stand 1 are supported in support holes formed in the center of a disc 7, respectively, and predetermined locations of the disc 7 are provided. A rotating gear 9 is provided on the object, and this rotating gear 9 is meshed with a rotating pinion 10, and the other disc 7 is brought into contact with a receiving roll 11,
On the other hand, a motor 13 is disposed on one side of the roll stand 1, and this motor 13 can be connected to the connecting shaft of the gear case 4 of the roll stand unit 2 closest to the motor 13 by means of a main drive clutch 14. Multi-stage roll forming machine.