KR20150079304A - Flexible roll forming unit - Google Patents

Abstract

Disclosed is a flexible roll forming a unit. According to an embodiment of the present invention, the flexible roll forming unit includes a base placed to have bilateral symmetry to a central line of a process direction and having a rail formed on both upper sides in a process width direction in order to form a material, placed with at least three steps in a process direction, into a forming beam having different sections having different lengths and widths; a forward and backward movement unit in which each slide plate is slid along the rail on the base in the process width direction by the operation of a forward and backward movement cylinder; a turning unit in which a turn table, installed on the slide plate to be rotated through a bearing, is rotated at a predetermined angle by the operation of a turning motor; and a roll forming unit in which upper and lower forming rolls installed in a roll housing on the turn table are rotated by the operation of each roll motor while forming the material by changing an angle against the process direction and the process width direction position through the turning unit and the forward and backward movement unit.

Description

FLEXIBLE ROLL FORMING UNIT [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a variable roll forming unit, and more particularly to a variable roll forming unit in which a blank material is variably roll-formed into a forming beam having an irregular section whose width and height are different along the length direction.

In general, a roll forming method is a method in which a coil is loosened to form a pair of upper and lower forming rolls and passes through a multi-stage roll forming unit arranged in a row, and is sequentially bent and formed into a predetermined shape. And is applied to manufacture a linear type molded product which is bent and formed into a constant shape such as a member.

1 is a schematic view of a general roll forming system and its steps.

Referring to FIG. 1, in the roll forming method according to the related art, the uncoiler 1 which uncoils the supplied coil 10 is arranged in front of the process line and proceeds to the uncoiling step S1 to supply the coils.

Strainer 2 is provided behind the uncoiler 1 in the process direction to proceed the straightening step S2 in which the strip-shaped coil 10 uncoiled from the uncoiler 1 is flattened.

A press 3 is provided behind the straightener 2 in the process direction to advance the piercing step S3 for forming holes for various uses in the coil 10 supplied from the straightener 2. [

At least ten or more roll forming units RU1 to RU10 (not shown) are disposed behind the press 3 in the process direction and fed through the uncoiler 1, the straightener 2 and the press 3 And a coil forming step (S4) of forming a linear beam of shaping beam (20) having a predetermined shape by roll forming.

A cutting press (4) is provided behind the roll forming unit to cut the forming beam (20) in accordance with the standard of finished product to produce a roll forming product (30) .

However, the roll forming method using the above-described conventional roll forming units RU1 to RU1 is capable of forming only a beam having a predetermined cross-section along the longitudinal direction, There is a disadvantage that the beam can not be formed.

Therefore, in the case of a molded article having a section having an irregular section whose width and height differ from each other along the length direction, a conventional multi-stage press forming method which can not be formed by a roll forming method and has a long cycle time .

In the embodiment of the present invention, the upper and lower forming rolls are made to be two sides in the process direction, respectively, so that the angle in the process width direction and the process direction can be varied and arranged in multiple stages along the process direction. It is desired to provide a variable roll forming unit which can be variably roll-formed by a forming beam having another deforming section.

In one or more embodiments of the present invention, at least three or more stages are disposed along the process direction so that the material to be fed is formed into a variable roll shape in a stepwise fashion with a forming beam having a different cross- A base disposed on both sides in symmetry with respect to the substrate and having rails formed on both sides thereof along the process width direction; Forward and backward means for slidingly driving each of the slide plates along the rails on the base in the process width direction by driving the forward and backward cylinders; A turning means for rotating the turntable mounted on the slide plate through a bearing to rotate at a predetermined angle by driving the turning motor; The upper and lower forming rolls respectively provided on the turntable on the turntable are rotated by the driving of the respective roll motors and the angles with respect to the process width direction and the process direction are changed by the forward and reverse stages and the turning means, It is possible to provide a variable roll forming unit including roll forming means for variable roll forming the material.

Further, the forward and reverse means includes a slide plate configured to be slidable in the process width direction along each rail on the base; And a forward / backward cylinder installed at the center of the upper outer surface of the base and connected to the center of the outer side of the slide plate through an operation rod.

Further, the turning means may include: a bearing installed at the center of the slide plate; A turntable installed in the bearing through a turning shaft; And a turning motor having a screw shaft connected to a side of the slide plate and connected to a screw housing rotatably formed at the tip of the hinge bar extending from one side of the turntable.

In addition, the slide plate may be installed on both side rails on the base through a plurality of sliders.

The roll forming means may include a roll housing installed on an upper surface of the turntable; Upper and lower roll motors respectively installed above and below the outer side surface of the roll housing; And upper and lower forming rolls provided on respective rotary shafts of the upper and lower roll motors passing through the roll housing at the inner side of the roll housing.

The upper and lower roll motors may be servo motors capable of controlling the number of revolutions and the direction of rotation.

In the embodiment of the present invention, the variable roll forming units are constituted so that the upper and lower forming rolls can vary in the process width direction and the process direction, and are arranged in multiple stages along the process direction, Can be variably roll-formed into a forming beam having another modified cross-section.

Accordingly, it is possible to integrally mold body members, frames, beams and the like having a cross-sectional profile having a different width and depth in the longitudinal direction through a single variable roll forming, thereby reducing the post- There is an effect that the body weight can be reduced.

1 is a schematic view of a general roll forming system and its steps.
2 is a perspective view of a variable roll forming unit according to an embodiment of the present invention.
3 is a partial side view of a variable roll forming unit according to an embodiment of the present invention.
4 is a partial plan view of a variable roll forming unit according to an embodiment of the present invention.
5 is a perspective view showing an example of a workpiece supplied to the variable roll forming unit according to the embodiment of the present invention.
6 is an operational explanatory view of a variable roll forming unit according to an embodiment of the present invention.
Fig. 7 is a conceptual view illustrating the operation of the variable roll forming unit according to the embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

It should be noted that the sizes and thicknesses of the components shown in the drawings are arbitrarily shown for convenience of explanation, and thus the present invention is not necessarily limited to those shown in the drawings.

In order to clearly explain the embodiments of the present invention, parts that are not related to the description are omitted, and the same or similar components are denoted by the same reference numerals throughout the specification.

FIG. 2 is a perspective view of a variable roll forming unit according to an embodiment of the present invention, FIG. 3 is a partial side view of a variable roll forming unit according to an embodiment of the present invention, and FIG. Fig.

Referring to FIGS. 2 to 4, the variable roll forming unit 100 according to the embodiment of the present invention basically applies a blank, which is not a coil material, as a material.

The variable roll forming unit 100 has an upper forming roll R1 and a lower forming roll R2 and is arranged at least three stages along the process direction to sequentially feed the material to be fed, The basic concept of roll forming with a shaping beam of the same is the same.

In the variable roll forming unit 100 according to the embodiment of the present invention, the upper and lower forming rolls R1 and R2 are symmetrically divided along the process direction center line LS, Is formed by a stepwise variable roll forming process with a forming beam having an irregular cross section whose width and height are different along the length direction.

That is, in the variable roll forming unit 100, the upper and lower forming rolls R1 and R2 are symmetrically arranged on the right and left sides in the process direction, and the upper and lower forming rolls R1 and R2, respectively, And is configured such that the angle can be changed by the cylinder drive also in the process direction.

A more detailed configuration of the variable roll forming unit 100 according to the embodiment of the present invention will be described below.

2 to 4, the variable roll forming unit 100 according to the embodiment of the present invention is provided with bases 103 on both sides symmetrically with respect to the process direction center line LS, (110), a turning means (120), and a roll forming means (130) are formed on the substrate (103).

First, on both sides of the upper surface of each base 103, rails 107 are provided along the process width direction.

The forward and reverse means 110 is configured such that the slide plate 111 is slidably driven in the process width direction by the cylinder drive along the rail 107 on the base 103.

That is, the slide plate 111 is installed to the both side rails 107 on the base 103 through the slider 112 and is slidably driven in the process width direction.

The front and rear cylinders 113 are connected to the center of the outer surface of the slide plate 111 through the operation rod 114 . Thus, the slide plate 111 is slid in the process width direction by driving the forward and backward cylinders 113 back and forth.

The turning means 120 is configured such that the turntable 121 is rotatable through the bearing on the slide plate 111 by using the turning force of the turning motor 122.

That is, the turning means 120 is provided with a bearing 123 at the center of the slide plate 111.

The turntable 121 is rotatably mounted on the bearing 123 on the slide plate 111 through a turning shaft 124.

A turning motor 122 is hingedly connected to the outside of the slide plate 111 through a hinge block 125 and the rotating shaft of the turning motor 122 is formed of a screw shaft 127.

A screw housing 128 is rotatably installed at the tip of the hinge bar 126 extending from one side of the turntable 121.

That is, the screw shaft 127 of the turning motor 122 is fastened to the screw housing 128.

The turntable 121 rotates about the turning shaft 124 by rotating the turning motor 122 in the forward and reverse directions.

The roll forming means 130 is installed on the turntable 121 and rotates the upper and lower forming rolls R1 and R2 provided at the upper and lower portions of the roll housing RH by driving the roll motor At the same time, the angle of the process width direction position and the process direction is changed by the forward / backward means 110 and the turning means 120, and the supplied material is variably roll formed.

3, the roll forming means 130 comprises a roll housing RH, upper and lower roll motors RM1 and RM2, and upper and lower forming rolls R1 and R2.

That is, the roll housing RH is fixed on the turntable 121, and the upper and lower roll motors RM1 and RM2 are installed on the outer side of the roll housing RH.

Each of the upper and lower roll motors RM1 and RM2 passes through the roll housing RH and is rotatably supported by the upper and lower forming rolls R1 and RH2 on the inner side surfaces of the roll housings RH1 and RH2, , R2 are respectively installed.

Here, the upper and lower roll motors RM1 and RM2 can be rotated in the forward and reverse directions, and a servo motor capable of controlling the number of revolutions and the rotational speed can be applied.

Therefore, the variable roll forming unit 100 having the above-described configuration is configured such that the upper and lower forming rolls R1 and R2 are rotated by driving the roll motors RM1 and RM2, 110 and the turning means 120, the angle of the process width direction and the process direction is changed, and the supplied material is stably pressurized while being variably roll-molded.

5 is a perspective view showing an example of a material supplied to the variable roll forming unit 100 according to the embodiment of the present invention.

5, a variable roll forming unit 100 according to an embodiment of the present invention basically applies a blank B of a certain standard to a supplied material, It is advantageous that the left and right sides are symmetrical with respect to each other.

That is, although the blank B is difficult to be formed when the width changes greatly along the longitudinal direction, the blank B may be formed to have a different width as a whole along the longitudinal direction, and includes a straight portion P1 having a constant width along the longitudinal direction, And a curved portion P3 that connects the straight line P1 and the extended portion P2 by a curved line. The curved portion P3 may include a curved portion P3 extending in the longitudinal direction.

Hereinafter, the operation of the variable roll forming unit 100 according to the embodiment of the present invention will be described with reference to FIGS. 6 and 7. FIG.

FIG. 6 is an operational explanatory view of a variable roll forming unit according to an embodiment of the present invention, and FIG. 7 is a conceptual view of operation of a variable roll forming unit according to an embodiment of the present invention.

6, as the slide plate 111 moves along the both side rails 107 on the base 103 by forward and backward driving of the forward and backward cylinders 113, And the lower forming rolls R1 and R2 can be variably controlled in position in the process width direction.

The variable roll forming unit 100 may be configured such that the turntable 121 rotates relative to the slide plate 111 by rotation of the turning motor 122 on the slide plate 111, R1, R2) can be variably controlled in angle with respect to the process direction.

The upper and lower forming rolls R1 and R2 each receive the rotational force of the upper and lower roll motors RM1 and RM2 in opposite directions to bend and shape the supplied material.

That is, in the above-described variable roll forming unit 100, the upper and lower forming rolls R 1 and R 2 are driven to rotate in opposite directions by driving the roll motors, and the slide plates 111 and the turning operation of the turntable 121 by the rotation of the turning motor 122 changes the angle of the process width direction and the process direction so that the material to be supplied is varied and formed into a roll.

The straight portion P1, the extending portion P2, and the curved portion P3 are formed on the end face of the variable roll forming unit 100, The forming step at each end is based on the above-mentioned blank (B) of Fig.

7 (a), the flange F is variably roll-formed with respect to the straight portion P1 of the blank B, and the upper and lower forming rolls R1 and R2 The position in the process width direction is fixed at the straight portion P1 of the blank B and the angle with respect to the process direction is perpendicular to the straight portion P1 to bend down a predetermined width of the edge of the straight portion P1, .

4 (b), the upper and lower forming rolls R1 and R2 enter the curved portion P3 of the blank B, and the positions in the process width direction are fixed as they are, Only the angle with respect to the process direction is changed by the rotation of the motor 122 to the same angle as that of the extended portion P2 so that a certain width of the edge of the curved portion P3 is formed into the flange F.

4 (c), the upper and lower forming rolls R1 and R2 enter the extended portion P2 of the blank B so that the angle with respect to the process direction becomes the extended portion P2, And the process width direction position P is extended outward along the edge of the extended portion P2 by the backward movement of the forward and backward cylinders 113 so that the extended portion P2 is maintained in the same state as the angle? And a constant width of the edge is formed into a roll shape by a flange F so as to form a variable roll with a forming beam having flanges F on both sides and different widths along the longitudinal direction.

When the forming beams having the flanges F perpendicular to both sides are formed through the variable roll forming, both side portions perpendicular to both sides of the forming beam are roll-formed on the basis of the longitudinal center line S through general roll forming, B are variably roll-formed into a 3D shaped molded article having a deformed section whose width and height are different from each other along the length direction by the extended portion P2.

Through such a molded product, members for a body, frames, beams and the like having a cross-sectional profile whose width and height are different from each other in the longitudinal direction are rolled integrally through a single roll forming, thereby minimizing post-processes such as welding and joining And contributes to weight reduction of the vehicle body.

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, And all changes to the scope that are deemed to be valid.

100: Variable roll forming unit
103: Base
110: forward / backward means
120: Turning means
130: roll forming means
107: rail
111: slide plate
112: Slider
113: forward and backward cylinder
114: operating rod
121: Turntable
122: Turning motor
123: Bearings
124: Turning axis
RH: Roll housing
R1, R2: upper and lower forming rolls
RM1, RM2: upper and lower roll motors
B: Blank
F: Flange
P1: straight line portion
P2: Extension
P3:

Claims (7)

At least three stages are arranged along the process direction so that the material to be fed is formed into a variable roll shape in stages by a forming beam having an irregular cross section whose width and height are different along the length direction,
A base disposed on both sides symmetrically with respect to the process direction centerline and having rails formed on both sides thereof along the process width direction;
Forward and backward means for slidingly driving each of the slide plates along the rails on the base in the process width direction by driving the forward and backward cylinders;
A turning means for rotating the turntable mounted on the slide plate through a bearing to rotate at a predetermined angle by driving the turning motor;
The upper and lower forming rolls respectively provided on the turntable on the turntable are rotated by the driving of the respective roll motors and the angles with respect to the process width direction and the process direction are changed by the forward and reverse stages and the turning means, Roll forming means for variably rolling the material;
And a variable roll forming unit. The method according to claim 1,
The forward /
A slide plate configured to be slidable in a process width direction along each rail on the base;
And a forward / backward cylinder connected to the center of the outer surface of the slide plate through an operation rod, the variable roll forming unit being disposed at the center of the upper surface of the base. The method according to claim 1,
The turning means
A bearing installed at the center of the slide plate;
A turntable installed in the bearing through a turning shaft;
And a turning motor having a screw shaft connected to a side of the slide plate and connected to a screw housing rotatably provided at a tip of a hinge bar extending on one side of the turntable. 4. The method according to any one of claims 1 to 3,
The slide plate
And a plurality of sliders provided on both side rails on the base. The method according to claim 1,
The roll forming means
A roll housing installed on an upper surface of the turntable;
Upper and lower roll motors respectively installed above and below the outer side surface of the roll housing;
And upper and lower forming rolls provided on respective rotary shafts of the upper and lower roll motors passing through the roll housing, at an inner surface of the roll housing. 6. The method of claim 5,
The upper and lower roll motors
A variable-speed roll forming unit comprising a servo motor capable of controlling the number of revolutions and the direction of rotation. At least three stages are arranged along the process direction so that the material to be fed is formed into a variable roll shape in stages by a forming beam having an irregular cross section whose width and height are different along the length direction,
A base disposed on both sides symmetrically with respect to the process direction centerline and having rails formed on both sides thereof along the process width direction;
A slide plate configured to be slidable in a process width direction along each rail on the base;
A forward / backward cylinder installed at the center of the upper outer surface of the base and connected to the center of the outer side of the slide plate through an operation rod;
A bearing installed at the center of the slide plate;
A turntable installed in the bearing through a turning shaft;
A turning motor hinged to one side of the slide plate and having a screw shaft connected to a screw housing rotatably formed at a tip of a hinge bar extending on one side of the turntable,
A roll housing installed on an upper surface of the turntable;
Upper and lower roll motors respectively installed above and below the outer side surface of the roll housing;
Upper and lower forming rolls provided on respective rotary shafts of the upper and lower roll motors passing through the roll housing, at the inner side of the roll housing;
The upper and lower forming rolls respectively provided on the turntable on the turntable are rotated by driving each of the roll motors and the angle of the process width direction and the process direction is changed by the operation of the slide plate and the turntable, And a variable roll forming unit for variably rolling the supplied material.

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