JPH07115081B2 - Roll tilt adjusting mechanism of roll forming device - Google Patents

Description

The present invention relates to an improvement of a cold roll forming apparatus, and a non-driving small roll of a forming apparatus of a metal molding used for an automobile or the like. It is used as a mechanism capable of fine angle adjustment.

(Prior Art) As a prior art relating to the present invention, there is JP-A-60-13042.

This is provided with a device for arranging a plurality of driving roll stands and a non-driving small roll forming stand, allowing the small roll forming stand to move left and right, and adjusting the small rolls by hydraulic pressure.

Further, as a related technique to this, a small roll as shown in FIG. 5 can be used to quickly move the position of the small roll shown in Japanese Patent Application No. 60-112459 to set the roll angle and finely adjust the molding width. A stand column having an arc surface 31 on the forming stand 30.
Some have 32.

(Problems to be Solved by the Invention) However, a device for adjusting the inclination angle of the small rolls 34 and 35 by moving the combination surface of the angle adjustment guide portion 33 and the stand column 32 provided in the small roll forming stand in an arc. At
When changing the roll forming group of the molding 36, the forming pattern (flower) is changed. Therefore, if the forming angle of the small roll is adjusted and the roll material is exchanged to form the molding, the forming load is unbalanced. As a result, the molding material 36 comes off from the small rolls 34 and 35 and falls off.

A technical object of the present invention is a roll inclination adjusting mechanism in which a molding material does not come off from a small roll by exchanging the roll material in a non-driving small roll forming stand for adjusting the forming angle of the small roll by moving the arc. It is a thing.

[Structure of Invention]

(Means for Solving Problems) The technical means taken for solving the above technical problems are:
A plurality of driving roll stands and a non-driving small roll forming stand group are provided, and in the non-driving small roll forming stand having a stand column having an arcuate surface and an angle adjusting guide portion, a linear movement is made in a horizontal direction with respect to a base. It is a roll inclination adjusting mechanism of a roll forming apparatus, wherein a stand mount can be horizontally rotated with respect to the base.

(Operation) The technical means functions as follows.

In the roll forming process of the molding rough material that is bent according to the shape of the driving roll and the non-driving small roll, when adjusting the bending when molding a new molding, adjust the position of the lower small roll and the tilt stand. Move and adjust. However, since the folding line of the molding coarse material may be broken from the small rolls at the set position, the rolling load of each small roll placed on the non-drive small roll forming stand can be adjusted to high or low, or the molding rough material can be adjusted. The small rolls are prevented from falling from the bending line of the molding rough material by providing flat rolls on the left and right side surfaces of the.

However, this adjustment method takes time to adjust the setup, and it is not possible to expect a sufficient effect.Therefore, the rotation of the stepping motor causes the rotation of the ball screw around the reference position by the movement of minute dimensions of the ball nut. The stand mount on the rail guide is rotated left or right by a small angle.

By finely adjusting the inclination of the non-driving small roll in this way, the non-driving small roll can be roll-formed without being lost from the bending line of the molding coarse material.

(Examples) Examples will be described below.

FIG. 1 is a plan view of the roll forming apparatus 1, in which 2a, 2b, ...
FIG. 2 shows the small roll forming stand.

1a is a base of the molding apparatus, and the molding stand 2a can be moved left and right on the rail 3 by a stepping motor 4 and a ball screw 5.

8 is a stand pillar, 9 is an arc portion, and inclined surfaces 6a and 6 are provided on the arc portion.
b, the tilt stand 11 including the angle adjustment guide 10 is fixed to the stand column 8 with the screw 7, and the notch 6c is provided substantially in the center of the tilt stand 11, and the stepping motor 12 and the upper side are provided below the tilt surface 6a. There is a hydraulic cylinder 13. The stepping motor 12 moves the non-driving small roll 14 diagonally up and down to set the position of the small roll on the pass line, and it is locked by the locking mechanism.

The hydraulic cylinder 13 moves the non-driving small roll 15 diagonally up and down to apply a rolling load to the molding coarse material 16.

The roll inclination adjusting device of the present invention will be described with reference to FIGS. 2 to 4. A stand mount 21 is fixed below the stand column 8 of the molding stand 2a, and a rail guide 22 is provided above and below the rail 3. The reference pin 24 is inserted into the rail guide and the hole provided in the rail, and the stand mount 21 can rotate on the rail guide 22 by a small angle about the reference pin 24 which is the reference position.

A stepping motor 25 is fixed to the rail guide 22 by a mounting plate 25a, and a gear 27 of the stepping motor 25 includes a gear 26 of a rotating shaft, a ball screw shaft 28, and a ball nut 29. For minute rotation, the ball screw and ball nut are minutely rotated through the gears, and the stand mount 21 is centered on the reference position 24 and the minute angle ±
It rotates by θ °.

In the above configuration, when describing the operation, in forming the roll material 16, (1) loosen the screw 7 of the stand column, (2) move the angle adjustment guide 10 in an arc along the arc part 9, and form the forming pattern. (3) Tighten the screw 7 (4) Replace the non-drive small rolls 14 and 15 with those that match the set angle (5) Roll-mold the molding rough material 16 (6) Small Check if the molding rough material 16 comes off (falls off) from the roll 14. (7) Rotate the stepping motor 25 minutely to rotate the stand mount 21 about the reference pin 24 by Δθ °. Tilt Δθ ° Set.

The non-driving small roll forming stand 2a arranged in this way cold-roll forms the molding coarse material 16.

The minute rotation of the stepping motor 25 can be directly moved by the ball screw and the ball nut.

〔The invention's effect〕

The present invention has the following effects. That is, in adjusting the angle of the non-driving small roll forming stand, conventionally, adjustment movement to the left and right of the forming stand and adjustment movement of the non-driving small roll up and down the inclined surface have been dealt with.

However, in molding rolls other than the product group, roll molding has been performed by adjusting the reduction load applied to the non-driven small rolls of each forming stand, but still the molding coarse material falls off from the non-driven small rolls and falls off. At this time, a spacer was incorporated into the roll holder and a non-driving small roll was tilted at a minute angle to roll-form.

By adopting the non-driving small roll forming stand of this mechanism, the need for it becomes less noticeable, and it is possible to immediately deal with roll forming of various types of molding sections, and the adjustment work can be greatly shortened, resulting in roll setup time. Can be greatly reduced.

[Brief description of drawings]

FIG. 1 is a simplified plan view of a roll forming apparatus, FIG. 2 is a side elevational view of the present embodiment, FIG. 3 is an external perspective view of the present embodiment with a part omitted, and FIG. FIG. 5 is a side view of a small roll forming stand having arc-shaped stand columns. 1 …… Roll forming device, 2a …… Non-driving small roll forming stand, 21 …… Stand mount, 22 …… Rail guide, 24…
… Reference position, 25 …… Stepping motor

Continuation of the front page (56) References JP-A 61-88924 (JP, A) JP-A 60-130421 (JP, A) JP-A 60-83725 (JP, A)

Claims (1)

[Claims] 1. A plurality of driving roll stands and a non-driving small roll forming stand group are provided, and in the non-driving small roll forming stand having a stand column having an arc surface and an angle adjusting guide portion, a horizontal position with respect to a base. A roll inclination adjusting mechanism of a roll forming apparatus, wherein a stand mount that linearly moves in a direction is rotatable and movable in a horizontal direction with respect to the base.