JP2007015014A - Roller device correctly and simply bending tapered tube and fan-shaped plate - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To correctly work a tapered tube, both ends of which have different diameters, by a conventional parallel roll machine. <P>SOLUTION: Three of upper and lower rolls are arranged. Both rolls are driven at speeds variable separately, and the intermediate part of each rolls is made freely workable. Driving roll parts 1, 2, 3 for feeding a small-diameter-side plate in a side A of each roll is driven by a small-diameter-side motor 8, and driving roll parts 4, 5, 6 for feeding a large-diameter-side plate in a side B is driven by a large-diameter-side motor 9 at a speed different from that of the motor 8. A free roll 7, which is split, is employed as an intermediate part of each roll, and allowed to freely move according to various speeds of the plate. Thereby, the tapered tube is worked without making flaws, due to forcible resistance or a slip, on a curled plate. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

This invention could not be processed by a conventional parallel roll machine. This makes it possible to process tapered tubes with different left and right diameters.

The conventional roll machine is a thing which processes a steel plate or a flat plate into a cylindrical shape by three or four upper and lower rolls, and it was not possible to process tapered pipes with different left and right sides. In rare cases, there are rolls in which the upper and lower rolls are tapered. However, a large number of rolls suitable for the taper to be bent must be prepared, and accurate bending cannot always be performed.

However, according to the above-described technology, a completely accurate taper tube processing has been completed by an epoch-making method having a completely different roll function from a conventional roll machine. Even if plates with R with different left and right widths are sent between rolls, they can only be sent at the same speed left and right, and taper bending cannot be performed. Therefore, it was bent to a shape close to a taper by a method of bending by repeating the operation of bending a roll a little and then bending and loosening the roll and correcting the angle of the plate to a right angle. Even so, each bent part is a fan-shaped intermittent, and does not become an accurate taper, and only a rough product can be produced.
As another method, there is a molding method that presses and bends into a fan shape by pressing, but if the press bending trace remains, it cannot be processed into a round shape, and it is processed in two or three parts and joined together. The biggest problem was that it cost a lot of money because it finished in one taper tube.

Means to solve the problem

This roll is fundamentally different from conventional processing rolls, and a drive roll that can be converted to different speeds is arranged on the left and right separately on one roll, and each divided roll is divided into an intermediate part. In part, it was decided to follow freely according to different plate speeds.

The invention's effect

By this invention, it was possible to wind at a speed matched to the right and left different plates R, which could never be achieved by conventional roll processing, and complete without using complicated methods such as guide and angle change. Taper processing is completed.

A conventional roll is shown in FIG.
Only bending with the same diameter on the left and right is possible.
An embodiment of the present invention is shown in FIGS.

"Effect of the embodiment"
By adjusting the three control rolls of this invention and the roll interval on the large diameter side, complete taper processing can be obtained.

It is explanatory drawing of the subject which invention attempted to solve. 1 Normal cylindrical machining. The plate is fed at right angles to the roll. 2 Shows the state when a conical processed plate is bent with this roll. The board can only be sent in the direction of the arrow, and the fan-shaped board cannot be processed. 3 Direction that must actually be sent. 1, 2, 3 Small diameter side plate feed drive roll 4, 5, 6 Large collar side plate feed drive roll 7 Swivel rotating roll (followed by each peripheral speed by the pressure of the processed plate) 8 Small diameter side motor (rotation control by inverter) 9) Large heel side motor (rotation control is performed by an inverter) A A plan view, on the plate bent on the A side (front view A portion) and the interval of the F portion of the lower roller is determined by moving up and down. B Plan view, Roller large flange side Plate bent at B part (front view B part) R of this part is changed and determined by adjusting the distances C and D between the rolls 4 and 5 and the upper roll 6 . 1, 2, 3 Small diameter side drive roll, driven by motor 8 (with inverter) 4, 5, 6 Large ridge side drive roll, driven by motor 9 (with inverter) 10 This plate is processed It is a fan-shaped plate to be tried. When this plate is bent and fed, the rotation of the rollers 1, 2 and 3 is determined according to the length of the AB part, and then the speed of the rolls 4, 5, and 6 is adjusted to the length of the CD part. , Adjust so that the vertex D of the winding plate is always at the center point of the roll. This adjustment can be calculated by calculation (if the plate is moving), but for further certainty, a little pressure is applied (to the extent that the plate does not bend) and it is moved forward and backward to make accurate adjustments before starting bending. It is a perspective view of a taper pipe bending process. 1 Lower roll for end bending. Since it is not the main point of this invention, it excluded in the other figure. 2 Both ends of the plate are fed by A and B drive rolls. 1 Swivel roll. (With hole for fixing pin insertion) 2 Pin for fixing a flexible roll. 3 Fixed pin is inserted and the free roll is connected. 4 The part where the fixed pin is inserted and becomes the drive roll. 5 Plate being processed. Usually, in the case of the plate of FIG. 3, it is driven by the drive rolls 1, 2, 3 and 4, 5, 6 but when the length of the processed plate is different, it does not reach the drive rolls of 4, 5, 6. Therefore, a fixed pin is inserted into each of the free rolls, and the parts up to 4 are designated as drive rolls.

Claims (1)

A roller device that enables accurate bending of tapered tubes (conical) or fan-shaped plates with different diameters at both ends.

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