JPH07171628A - Method for forming cylindrical work out of flat sheet - Google Patents

Abstract

PURPOSE:To prevent a work from being flowed, and dispense with the disposal or the repairing work by lowering a bending roll to be formed on a cylindrical work after completing the winding up of the work, and returning the bending roll after the work is delivered. CONSTITUTION:A flat sheet of the prescribed dimensions is fed to a bending roll consisting of a main forming roll 2, a forming roll 3, an auxiliary roll 5, a bender roll 4 and an ejector 6. While the flat sheet is passed between the main forming roll 2 and the forming roll, and then, between the auxiliary roll 5 and the bender roll 4, it is bent into a cylinder of the prescribed size. After completion of the forming, the bender roll 4 is lowered, and when a work W2 is not brought into contact with the bender roll 4, the ejector is advanced to deliver the work W2 from the bending roll. When the delivery of the work W2 is completed, the ejector is retracted to the original position and the bender roll 4 is also returned to the original position.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flat plate cylindrical work forming method for bending a flat metal plate cut into a predetermined size into an automobile rim material or various cylindrical parts (hereinafter, simply referred to as a work). .

[0002]

2. Description of the Related Art Conventionally, the forming of a cylindrical work piece is
Using the main forming roll, forming roll, auxiliary roll, bending roll consisting of bender roll and ejector with multiple axial grooves on the surface, adjust and fix the position of each roll according to the size of the work. ing. The position of each roll remains fixed until the next work size change.

[0003]

According to the above-mentioned method of the prior art, when the flat plate is rolled up on the cylindrical work and is discharged, the positional relationship of the bender roll having a plurality of axial grooves on the surface causes There has been a problem that the work comes into contact with the corners of the groove formed in the bender roll, and the outer surface of the work is scratched in a streak pattern in the axial direction.

The present invention has been made to solve the above-mentioned problems of the prior art, and it is an object of the present invention to provide a flat-plate cylindrical work forming method in which the work is not scratched and discarding or reworking work is unnecessary. To aim.

[0005]

In order to achieve the above object, a method for forming a cylindrical work piece of a flat plate according to the present invention includes a main forming roll, a forming roll, an auxiliary roll, In the method of processing a cylindrical work with a bending roll consisting of a bender roll and an ejector, after the flat plate has been rolled up, the bender roll is lowered, and after the ejector has discharged the work, the bending roll is returned to its original position, The next flat plate is wound up.

[0006]

[Function] From the previous process, a flat plate cut into specified dimensions is
When it is sent to a bending roll consisting of a main forming roll, a forming roll, an auxiliary roll, a bender roll and an ejector, it passes between the main forming roll and the forming roll, and in the process of passing between the auxiliary roll and the bender roll, a cylinder of a predetermined size. It is rolled up into a shape. When the roll-up molding is completed, the bender roll descends, and when the work and the bender roll are not in contact with each other, the ejector advances in the axial direction of the roll to eject the work from the bending roll. Then, when the work payout is completed, the ejector retracts to the original position, and the bender roll returns to the original position.

[0007]

Embodiments of the present invention will be described below with reference to the drawings.

As shown in FIG. 1, reference numeral 1 denotes a bending roll, which comprises a driving roll group consisting of a main forming roll 2, a forming roll 3 and a bender roll 4, an auxiliary roll 5, an ejector 6 for ejecting a work and a stopper 7. It is configured. The bender roll 4 is provided with a plurality of axial grooves 4a on its surface, and as shown in FIG. 3, can be vertically moved within a predetermined range.

Next, a method of bending a flat plate using the bending roll 1 will be described. As shown in FIG. 2, the flat plate W ₁ cut into a prescribed size and fed from the previous step passes between the main forming roll 2 and the forming roll 3 and further between the auxiliary roll 5 and the bender roll 4. .
The flat plate W ₁ is gradually wound up during the process of passing between the rolls, the tip of the flat plate advances in a circular shape and reaches the stopper 7, and a cylindrical work W of a predetermined size.
Molded to ₂ . Simultaneously with the completion of molding, arrow A shown in FIG.
When the bender roll 4 descends in at least one direction until it does not come into contact with the work W, the ejector 6 advances in the direction of the arrow A shown in FIG. 1 to dispense the work W ₂ and send it to the next step. When the payout of the work W ₂ is completed, the ejector 6 retreats to the predetermined position in the direction opposite to the arrow D, the bender roll 4 rises to the predetermined position in the direction of the arrow B, and returns to the original position to move to the next position. Start forming the flat plate.

By the way, as a means for moving the bender roll 4 up and down, a known motor such as a motor with a brake or a servo motor and a magnet scale can be used in combination.

[0011]

As described above, the present invention has the above-described structure, and when the work is dispensed, the work is not scratched, and the work such as repair work and disposal is not required, which is an excellent effect that the production efficiency is improved. Have.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of a bending roll used in the method of the present invention.

FIG. 2 is a schematic view showing a winding operation state of the present invention.

FIG. 3 is a schematic view showing a state after completion of the winding operation of the present invention.

[Explanation of symbols]

 1 Bending roll 2 Main forming roll 3 Forming roll 4 Bender roll 4a Groove 5 Auxiliary roll 6 Ejector 7 Stopper

Claims (1)

[Claims] 1. A method of processing a flat plate cut into a certain size into a cylindrical work by using a bending roll consisting of a main forming roll, a forming roll, an auxiliary roll, a bender roll and an ejector. ,
A flat plate cylindrical work forming method, characterized in that the bender roll is lowered, the ejector ejects the work, and then returns to the original position of the bending roll to wind up the next flat plate.