KR20160114468A - Roll former and control method thereof - Google Patents

Roll former and control method thereof Download PDF

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Publication number
KR20160114468A
KR20160114468A KR1020150041014A KR20150041014A KR20160114468A KR 20160114468 A KR20160114468 A KR 20160114468A KR 1020150041014 A KR1020150041014 A KR 1020150041014A KR 20150041014 A KR20150041014 A KR 20150041014A KR 20160114468 A KR20160114468 A KR 20160114468A
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KR
South Korea
Prior art keywords
roll
load cell
servo motor
plate
forming
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Application number
KR1020150041014A
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Korean (ko)
Inventor
조국래
이문용
Original Assignee
주식회사 성우하이텍
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Application filed by 주식회사 성우하이텍 filed Critical 주식회사 성우하이텍
Priority to KR1020150041014A priority Critical patent/KR20160114468A/en
Publication of KR20160114468A publication Critical patent/KR20160114468A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/14—Bending sheet metal along straight lines, e.g. to form simple curves by passing between rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/004—Bending sheet metal along straight lines, e.g. to form simple curves with program control

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Press Drives And Press Lines (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Abstract

A roll forming apparatus and a control method thereof are disclosed. A roll forming apparatus according to an embodiment of the present invention includes a base plate; A pair of holding frames disposed on the base plate at regular intervals; A lower forming roll installed on a fixed block formed at a lower portion of the two side support frames through a rotary shaft; An upper shaping roll disposed parallel to an upper portion of the lower forming roll, the upper shaping roll being installed on both side sliding blocks on upper sides of the two side supporting frames so as to be vertically slidable; An upper plate connecting upper ends of the two side support frames and having through holes at the center thereof; An elevating and lowering plate connected to upper ends of the both side sliding blocks to be movable along the both side supporting frames; A load cell formed at the center of the upper surface of the ascending / descending plate for detecting and outputting a load value according to a molding reaction force; A screw housing integrally formed on an upper surface of the load cell; A servo motor installed downward at the center of the upper surface of the upper plate, the rotary shaft being formed as a screw shaft and fastened to the screw housing through the through hole; And a controller for controlling the number of revolutions and the direction of rotation of the servomotor by comparing the load value inputted from the load cell with a set value on its own map table and controlling the initial gap between the upper and lower forming rolls to the servo motor And then detects a molding reaction force applied to the upper forming roll according to the material thickness as a load value through the load cell and compares it with a set value on its own map table, And the gap between the upper and lower forming rolls is automatically adjusted in real time.

Description

[0001] DESCRIPTION [0002] ROLL FORMER AND CONTROL METHOD THEREOF [

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a roll forming apparatus and a control method thereof, and more particularly, to a roll forming apparatus and a control method thereof that, after setting an initial gap between upper and lower forming rolls in a roll forming apparatus, And controlling a gap between the upper and lower forming rolls by a single servo motor, and a control method thereof.

Generally, the shaping of a linear type beam current is performed by a roll forming system in which a roll forming apparatus in which a roll forming apparatus composed of an upper forming roll and a lower forming roll are arranged in a row at least in ten or more stages and the material to be fed is bent into various shapes and molded.

1, an uncoiler 201 for uncoiling a coil 200 to be fed is formed in front of a processing line to form an uncoiling step S110, and the uncoiler 201, A straightener 203 for stretching the strip-shaped coil 200 unwound from the coil 201 to the flat strip-shaped steel panel 250 is provided at the rear side thereof to form a straightening step S120.

The strip steel plate 250 supplied from the straightener 203 is provided at the rear of the straightener 203 with a brake press 205 for forming holes for various purposes for assembling the forming beam to be formed, The process proceeds to step S130.

The uncoiler 201, the straightener 203, and the rollers 203, which are disposed at the rear of the brake press 205 and are composed of the roll-forming devices 207 (R1 to R7; not shown) A roll forming step (S140) of performing roll forming on a shape of a forming beam to be obtained by successively bending the strip steel plate panel 250 supplied via the brake press 205 is carried out.

In addition, a round bender 209 constituted by a plurality of left and right curvilinear forming rolls for forming a curvature of a roll-forming molded product having a predetermined curvature is provided at the rear of the roll-forming device 207, and is installed along a radius of curvature to be formed The bending step (S150) of manufacturing a finished product having a certain curvature is performed by passing the forming beam that has been subjected to roll forming.

In such a roll forming system, the upper and lower forming rolls constituting each of the roll forming apparatuses R1 to R7 have gap deviations (gap deviations) between the upper forming roll and the lower forming roll by the forming reaction force The gap between the upper forming roll and the lower forming roll should be adjusted, particularly when the thickness of the material changes, such as TWB material.

However, in the past, in order to adjust the gap between the upper shaping roll and the lower shaping roll, the operator has to measure the gap between each shaping roll by using a gap gauge and set it again. However, since the precise gap setting is difficult, A left and right molding deviation occurs between the lower molding roll and the lower molding roll, and the product is distorted due to the difference in molding pressure.

In the embodiment of the present invention, the initial clearance between the upper and lower forming rolls constituting each roll forming apparatus of the roll forming system is automatically set by one servo motor, and then the forming reaction force And a gap between the upper and lower forming rolls can be automatically adjusted by detecting a load value through a load cell and a control method thereof.

In one or more embodiments of the present invention, a base plate; A pair of holding frames disposed on the base plate at regular intervals; A lower forming roll installed on a fixed block formed at a lower portion of the two side support frames through a rotary shaft; And an upper shaping roll disposed parallel to the upper molding roll and installed on the upper side of the both side supporting frames via a rotary shaft in both side sliding blocks slidable in the vertical direction, An upper plate connecting upper ends of the strut frame and having through holes at the center thereof; An elevating and lowering plate connected to upper ends of the both side sliding blocks to be movable along the both side supporting frames; A load cell formed at the center of the upper surface of the ascending / descending plate for detecting and outputting a load value according to a molding reaction force; A screw housing integrally formed on an upper surface of the load cell; A servo motor installed downward at the center of the upper surface of the upper plate, the rotary shaft being formed as a screw shaft and fastened to the screw housing through the through hole; And a controller for controlling the number of revolutions and the direction of rotation of the servo motor by comparing a load value inputted from the load cell with a set value on its own map table.

The servomotor may be a stepping motor capable of controlling the number of revolutions and the direction of rotation.

In addition, the controller sets the state in which the upper and lower forming rolls are in contact with each other as an initial gap, and sets a load value detected by the load cell through the upper forming roll by a forming reaction force according to the thickness of the loaded material, And outputting a voltage signal to control the gap between the upper forming roll and the lower forming roll in real time by controlling the power supply of the servo motor in comparison with the value of the control logic.

And in one or more embodiments of the present invention, a base plate; A pair of holding frames disposed on the base plate at regular intervals; A lower forming roll installed on a fixed block formed at a lower portion of the two side support frames through a rotary shaft; An upper shaping roll disposed parallel to an upper portion of the lower forming roll, the upper shaping roll being installed on both side sliding blocks on upper sides of the two side supporting frames so as to be vertically slidable; An upper plate connecting upper ends of the two side support frames and having through holes at the center thereof; An elevating and lowering plate connected to upper ends of the both side sliding blocks to be movable along the both side supporting frames; A load cell formed at the center of the upper surface of the ascending / descending plate for detecting and outputting a load value according to a molding reaction force; A screw housing integrally formed on an upper surface of the load cell; A servo motor installed downward at the center of the upper surface of the upper plate, the rotary shaft being formed as a screw shaft and fastened to the screw housing through the through hole; And a controller for controlling the number of revolutions and the direction of rotation of the servo motor by comparing a load value inputted from the load cell with a set value on its own map table, the control method comprising the steps of: Is detected by a load value through the load cell and is compared with a set value on its own map table, and the servo motor And controlling a rotation direction and a rotation direction of the upper and lower forming rolls to automatically adjust the gap between the upper and lower forming rolls in real time.

In the embodiment of the present invention, the initial clearance between the upper and lower forming rolls constituting each roll forming apparatus of the roll forming system is automatically set by one servo motor, and then the forming reaction force The gap between the upper and lower forming rolls can be automatically adjusted. In particular, gap deviation due to the thickness of the material can be eliminated.

As a result, it is possible to prevent twisting phenomenon occurring in the forming beam for roll forming due to unevenness of the molding pressure.

1 is a schematic view of a general roll forming system and its steps.
2 is a front sectional view of a roll forming apparatus according to an embodiment of the present invention.
3 is a side view of a roll forming apparatus according to an embodiment of the present invention.
4 is a conceptual diagram illustrating the operation of the roll forming apparatus 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 is to be understood, however, that the present invention is not limited to the illustrated embodiments, and that various changes and modifications may be made without departing from the spirit and scope of the invention. .

Further, in order to clearly illustrate the embodiments of the present invention, portions not related to the description are omitted.

FIG. 2 is a front sectional view of a roll forming apparatus according to an embodiment of the present invention, and FIG. 3 is a side view of a roll forming apparatus according to an embodiment of the present invention.

Referring to FIGS. 2 and 3, the roll forming apparatus according to the embodiment of the present invention is provided with a base plate 1 at a lower portion thereof.

On the base plate 1, a pair of strut frames 3 are formed at mutually regular intervals on both sides.

A lower block 5 is formed below each of the side support frames 3 and a lower forming roll 9 is rotatably installed in each of the fixing blocks 5 via a rotary shaft 7.

Here, the rotary shaft 7 of the lower forming roll 9 is installed in each fixing block 5 through a bearing 11.

 The upper forming rolls 13 are arranged on the upper side in parallel with the lower forming roll 9 so that the upper forming rolls 13 are slidable in the vertical direction on the upper side of the both side supporting frames 3 And is mounted to the sliding block 15 through the rotary shaft 17. [

The sliding blocks 15 are slidable in the vertical direction through the sliding grooves 19 formed in the two side support frames 3.

The rotary shaft 17 of the upper shaping roll 13 is installed in each of the sliding blocks 15 through a bearing 11.

An upper plate (21) is connected to upper portions of the two side support frames (3) by connecting upper ends of the two side support frames. The upper plate (21) has a through hole (H) formed at the center thereof in a vertical direction.

The upper end of the both side sliding blocks 15 is connected to the upper side of the both side sliding blocks 15 so as to be movable upward and downward along the sliding grooves 19 of the both side support frames 3, Is installed.

A load cell 23 is formed at the center of the upper surface of the ascending / descending plate 25 to detect a load value corresponding to the molding reaction force and output the detected load value to the controller C.

On the upper surface of the load cell 23, the screw housing 27 is integrally formed upward.

A servo motor 29 is disposed downward at the center of the upper surface of the upper plate 21 and a rotary shaft of the servo motor 29 is formed of a screw shaft 31, The screw shaft 31 is fastened to the screw shaft 27.

A controller for comparing a load value input from the load cell with a set value on its own map table to control the rotation speed and the rotation direction of the servo motor;

Here, the servomotor 29 may be a stepping motor capable of controlling the number of revolutions and the direction of rotation.

The controller C compares the load value input from the load cell 23 with the set value on its map table to control the servomotor 29 to rotate forward and backward. And the load value detected by the load cell 23 through the upper forming roll 13 by the molding reaction force according to the thickness of the material to be fed is set to a set value And outputs a voltage signal for control.

The servomotor 29 controls the rotation of the servo motor 29 in accordance with the voltage signal of the controller C so as to control the gap between the upper forming roll 13 and the lower forming roll 9 in real time.

That is, the fastening amount of the screw shaft 31 with respect to the screw housing 27 varies according to the rotational speed and the rotational direction of the servomotor 29, so that the position of the lifting plate 25 is moved up and down So that the gap between the upper molding rolls 13 connected to the both side sliding blocks is variable in real time with respect to the lower molding rolls 9 fixed in position.

4 is a conceptual diagram illustrating the operation of the roll forming apparatus according to the embodiment of the present invention.

Referring to FIG. 4, when a material such as the TWB plate 30 is fed, the roll forming apparatus having the above-described configuration is subjected to roll forming by the initial upper forming roll 13 and the lower forming roll 9 A forming reaction force according to the thickness of the material is applied to the upper forming rolls 13 and the lower forming rolls 9 in the course of entering the welding area WZ of the TWB plate 30, Is detected as a load value in the load cell (23) via the load cell (13).

At this time, the controller C compares the load value detected by the load cell 23 with the set value on its own map table, and controls the rotation number and the rotation direction of the servo motor 29 within the error range, The gap between the roll 13 and the lower forming roll 9 is automatically adjusted in real time.

At this time, the rotation of the servo motor 29 is controlled by the voltage signal of the controller C applied to the servo motor 29.

Therefore, according to the roll forming apparatus and the control method thereof according to the embodiment of the present invention, after the initial gap between the upper and lower forming rolls 13 and 9 is automatically set by the servo motor 29, The gap between the upper and lower molding rolls 13 and 9 is automatically adjusted by detecting the molding reaction force applied to the upper molding roll 13 as a load value through the load cell 23, .

As a result, it is possible to prevent twisting phenomenon occurring in the forming beam for roll forming due to the unevenness of the molding pressure, thereby ensuring good molding quality.

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.

1: Base plate
3: holding frame
5: Fixed block
7:
9: Lower molding roll
11: Bearings
13: Upper forming roll
15: Sliding block
19: Sliding groove
21: upper plate
23: Load cell
25: Up and down plate
27: Screw housing
29: Thermo motor
31: Screw shaft

Claims (8)

A base plate; A pair of holding frames disposed on the base plate at regular intervals; A lower forming roll installed on a fixed block formed at a lower portion of the two side support frames through a rotary shaft; And an upper shaping roll disposed parallel to the upper molding roll and installed on both side sliding blocks on both sides of the upper and lower side supporting frames via a rotary shaft,
An upper plate connecting upper ends of the two side support frames and having through holes at the center thereof;
A load cell connected to the upper ends of the two sliding blocks to move along the opposite side support frames and configured to detect a load value according to a reaction force acting on the upper surface of the lifting plate;
A servo motor installed downward at a center of an upper surface of the upper plate and fastened to a screw housing formed integrally on an upper surface of the load cell through a through hole;
The roll forming apparatus comprising: The method according to claim 1,
And a controller for controlling a rotation number and a rotation direction of the servo motor by comparing a load value inputted from the load cell with a set value on its own map table. 3. The method according to claim 1 or 2,
The servo motor
And a step motor capable of controlling the number of revolutions and the direction of rotation. 3. The method of claim 2,
The controller
The upper and lower forming rolls are brought into contact with each other at an initial gap and a load value detected by the load cell through the upper forming roll by a forming reaction force according to the thickness of the material to be supplied is compared with a set value of its own map table, And a control logic for controlling the power supply of the servo motor to output a voltage signal to control the gap between the upper forming roll and the lower forming roll in real time in real time. A base plate; A pair of holding frames disposed on the base plate at regular intervals; A lower forming roll installed on a fixed block formed at a lower portion of the two side support frames through a rotary shaft; And an upper shaping roll disposed parallel to the upper molding roll and installed on both side sliding blocks on both sides of the upper and lower side supporting frames via a rotary shaft,
An upper plate connecting upper ends of the two side support frames and having through holes at the center thereof;
An elevating and lowering plate connected to upper ends of the both side sliding blocks to be movable along the both side supporting frames;
A load cell formed at the center of the upper surface of the ascending / descending plate for detecting and outputting a load value according to a molding reaction force;
A screw housing integrally formed on an upper surface of the load cell;
A servo motor installed downward at the center of the upper surface of the upper plate, the rotary shaft being formed as a screw shaft and fastened to the screw housing through the through hole;
And a controller for controlling the number of revolutions and the direction of rotation of the servo motor by comparing a load value inputted from the load cell with a set value on its own map table. 6. The method of claim 5,
The servo motor
And a step motor capable of controlling the number of revolutions and the direction of rotation. 6. The method of claim 5,
The controller
The upper and lower forming rolls are brought into contact with each other at an initial gap and a load value detected by the load cell through the upper forming roll by a forming reaction force according to the thickness of the material to be supplied is compared with a set value of its own map table, And a control logic for controlling the power supply of the servo motor to output a voltage signal to control the gap between the upper forming roll and the lower forming roll in real time in real time. A base plate; A pair of holding frames disposed on the base plate at regular intervals; A lower forming roll installed on a fixed block formed at a lower portion of the two side support frames through a rotary shaft; An upper shaping roll disposed parallel to an upper portion of the lower forming roll, the upper shaping roll being installed on both side sliding blocks on upper sides of the two side supporting frames so as to be vertically slidable; An upper plate connecting upper ends of the two side support frames and having through holes at the center thereof; A load cell connected to the upper ends of the two sliding blocks to move along the both side support frames and configured to detect a load value according to a molding reaction force, And a servo motor installed downward at the center of the upper surface of the upper plate and fastened to a screw housing formed integrally on the upper surface of the load cell through the through hole and having a rotation axis formed as a screw shaft, As a result,
The initial gap between the upper and lower forming rolls is automatically set by the servomotor, and a molding reaction force applied to the upper forming roll is detected as a load value through the load cell according to the material thickness, And controlling a rotation number and a rotation direction of the servo motor within an error range to automatically adjust the gap between the upper and lower forming rolls in real time.
KR1020150041014A 2015-03-24 2015-03-24 Roll former and control method thereof KR20160114468A (en)

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KR1020150041014A KR20160114468A (en) 2015-03-24 2015-03-24 Roll former and control method thereof

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114951371A (en) * 2022-06-02 2022-08-30 江苏泽海机械科技有限公司 Plate bending machine capable of automatically stopping and cutting off control

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114951371A (en) * 2022-06-02 2022-08-30 江苏泽海机械科技有限公司 Plate bending machine capable of automatically stopping and cutting off control
CN114951371B (en) * 2022-06-02 2023-10-31 江苏泽海机械科技有限公司 Automatic stop and cut-off control plate bending machine

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