KR20100035452A - Cutting device for roll forming beam - Google Patents

Abstract

PURPOSE: An apparatus for cutting a roll forming molding beam is provided to secure cross part dimensional accuracy of a molded product. CONSTITUTION: An apparatus for cutting a roll forming molding beam comprises a body, a rotational plate part(40), a mandrel bar part(80), a rotation cam part(90), a mandrel part(50), a top cutting part(60), and a lower cutting part(70). The mandrel part is inserted inside the cut out part of the forming beam. The cut out part inside of the forming beam is formed into the closed part.

Description

CUTTING DEVICE FOR ROLL FORMING BEAM}

The present invention relates to a cutting apparatus for a roll forming shaping beam, and more particularly, to cut in the upper and lower outer sides of the forming beam in a state in which a mandrel unit is inserted and supported inside a cut portion of the roll forming forming beam to be formed into a closed cross section. The present invention relates to a cutting device for a roll forming beam, which accurately cuts using a blade to secure cutting surface quality and dimensional accuracy of a closed cross-section molded product.

In general, the beam type of the straight type is formed by a roll forming system in which a roll former composed of an upper roll and a lower roll is arranged in a row of 10 or more stages to bend and shape a panel supplied into various shapes.

In the roll forming system described above, as shown in FIG. 1, an uncoiler 101 for releasing the coil 100 to be supplied is formed in front of a process line, and a strip-shaped steel sheet released from the uncoiler 101 is formed. The straightener 103 which extends to the strip | belt-shaped steel plate panel 200 of a plate is provided in the back.

A brake press 105 is provided at the rear of the straightener 103 to form a piercing hole for various purposes for assembling and cutting the beams to be formed in the strip-shaped steel sheet panel 200 supplied from the straightener 103. do.

In addition, the roll former unit (R) consisting of the above-described 10 or more stages of roll formers (R1 to R10; some not shown) is disposed in a row at the rear of the brake press 105 to straighten the uncoiler 101 and straight. Roll-forming molding is performed on the closed cross-section shaping beam 300 to be obtained by sequentially bending and forming the strip-shaped steel panel 200 supplied through the numer 103 and the brake press 105.

In this way, the closed cross-section shaping beam 300 formed by the roll former unit R, as shown in Figure 2, by the cutting press 107 is located behind the roll former unit (R). Cut to exact specifications.

That is, the cutting press 107 is configured with a lower mold 113 for seating the forming beam 300 on the lower die 111, the trim steel 117 is mounted on the upper die 115 of the upper portion The trim steel 117 is configured to cut the closed cross-section shaping beam 300 on the lower die 113 as the upper die 115 descends.

However, in the conventional cutting press 107 as described above, the closed cross-section shaping beam 300 is put on the lower mold 113 and formed by the trim steel 117. The closed cross-section shaping beam 300 is a high tensile steel sheet. In this case, the cut portion is depressed by the trim steel 117, or the cut surface is not smooth, including the disadvantages of lowering the quality of the molded article 300.

In addition, when the closed cross-section shaping beam 300 is cut by the cutting press 107, there is a problem that the cut surface is not smooth and the dimensions are not accurate, such as a reduction in the dimensional accuracy.

Therefore, the present invention has been invented to solve the disadvantages and problems as described above, the problem to be solved by the present invention is a state in which the mandrel unit is inserted into the cut portion of the roll forming forming beam to be formed into a closed cross-section, supported by The present invention provides a roll forming forming beam cutting device that accurately cuts the cut portion through the cutting blades on the upper and lower outer sides of the forming beam to secure the cutting surface quality and dimensional accuracy of the closed cross-section molded product.

Roll forming forming beam cutting device of the present invention for realizing the technical problem as described above is formed in the roll forming unit on the roll forming forming process line to cut the cut portion of the roll forming forming beam is formed into a closed cross-section In the beam cutting device,

An apparatus body configured to install a square base frame on a base plate formed at a rear lower portion of the roll former unit, and install a guide frame in a horizontal direction between the base frames; A rotating plate unit configured at one rear side of the guide frame to control rotation of the rotating plate by a motor at a predetermined angle; A mandrel bar unit configured on the rotating plate and configured to retract the mandrel bar by a spring force; A rotary cam unit configured on the guide frame at the rear of the rotary plate unit to move the mandrel bar forward by driving the rotary cam; A mandrel unit mounted to the front end of the mandrel bar and supporting both sides of the cut part through the front mandrel and the rear mandrel while being inserted into the closed end shaping beam; An upper cutting unit installed downward on the front upper side of the base frame to cut a cut portion of the closed cross-section shaping beam supported by the front and rear mandrel by a cylinder driving from an upper outer side through an upper cutting blade; It is installed upward in front of the base plate opposite the guide hole of the guide frame to cut the cut portion of the closed cross-section shaping beam supported by the front and rear mandrel by the cylinder drive from the bottom outside through the lower cutting blade. Characterized in that it consists of a lower cutting unit.

The rotating plate unit is a drive motor installed in the lower portion of the rear side on the guide frame; Is disposed on the upper surface of the guide frame is characterized in that consisting of a rotating plate is installed on the rotation axis of the drive motor.

The drive motor is preferably made of a step motor capable of controlling the rotation speed and the rotation direction.

The mandrel bar unit is formed of a cylindrical cylinder of a predetermined length and one end of the bar housing is fixed to one side on the rotating plate; A stopper block fixedly installed at the other side of the rotating plate on the axis of the bar housing and having a through hole formed at a center thereof; It is formed longer than the bar housing is inserted into the bar housing, the rear mandrel of the mandrel unit is fixed to the front end of the outer side of the bar housing, a retainer is formed at one rear side from the outer side of the bar housing, the rear end A mandrel bar inserted into the through hole of the stopper block; And a return spring interposed between the retainer on the mandrel bar and a rear end of the bar housing to provide a restoring force to the mandrel bar.

The retainer is disposed at a position between the rear end of the bar housing and the stopper block.

The return spring is preferably made of a coil spring and fitted on the mandrel bar.

The rotating cam unit is a cam motor which is installed in the lower portion of the guide frame corresponding to the rear of the rotating plate; In the rear of the rotating plate, characterized in that consisting of a rotary cam is installed on the rotation axis of the cam motor so that the outer circumferential cam surface in contact with the rear end of the mandrel bar.

The cam motor is preferably made of a step motor capable of controlling the rotation speed and rotation direction thereof.

The outer cam surface of the rotary cam is characterized in that it has a stepped surface stepped in a predetermined length in the direction of the center of rotation on one side of the outer peripheral surface.

The mandrel unit includes a rear mandrel fixedly mounted to the front end of the mandrel bar; And a front mandrel connected to the center of the rear mandrel through a connection bar.

The connection bar is characterized in that integrally connected to each one of the central both sides between the front mandrel and the rear mandrel.

The front mandrel and the rear mandrel are characterized in that the closed cross section forming beam is formed along an inner cross sectional shape.

The width between the front mandrel and the rear mandrel is configured to correspond to the thickness of the upper and lower cutting blades.

The upper cutting unit includes an upper cylinder which is installed downward on the front upper side of the base frame; It has a predetermined thickness, characterized in that consisting of the upper cutting blade which is installed downward in the front end of the operating rod of the upper cylinder.

The lower end of the upper cutting blade is characterized in that it is formed in a sawtooth shape.

The lower cutting unit is installed upward in the front of the base plate to face the guide hole of the guide frame lower cylinder; It has a predetermined thickness, characterized in that consisting of a lower cutting blade which is installed upward in the front end of the operating rod of the lower cylinder is guided up and down by the guide hole.

The upper end of the lower cutting blade is characterized in that it is formed in a sawtooth shape.

As described above, according to the cutting device for a roll forming shaping beam according to the present invention, a mandrel unit is inserted into a cut portion of a roll forming shaping beam to be formed into a closed section, and the inside of the cut beam is supported. The cutting part is accurately cut through the upper and lower cutting blades operated by the cylinder drive on the upper and lower sides, respectively, thereby improving the cutting surface quality of the closed cross-section molded article, thereby ensuring the dimensional accuracy.

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

3 is an overall conceptual diagram of a roll forming system to which a cutting device for forming a roll forming beam according to an embodiment of the present invention is applied, and FIG. 4 is a side view of the cutting device for forming a roll forming beam according to an embodiment of the present invention.

First, the overall configuration of the roll forming system to which the cutting device according to the embodiment of the present invention is applied, as shown in FIG. 3, on the roll forming process line, an uncoiler for releasing the coil 10 supplied ( 1) is provided in front of the process line, and the straightener 3 which spreads the strip | belt-shaped steel plate unrolled from the said uncoiler 1 to the strip | belt-shaped steel plate panel 20 of a plate is provided in the back.

In the rear of the straightener 3, a brake press 5 is formed in the strip-shaped steel sheet panel 20 supplied from the straightener 3 to form holes for various uses for assembling the beams to be formed.

In addition, the roll former unit R composed of the above-described roll formers R1 to R10 (partly not shown) is disposed in a row at the rear of the brake press 5 to straighten the uncoiler 1 and straight. Roll-forming molding is performed on the closed cross-section forming beam 30 to be obtained by sequentially bending and forming the strip-shaped steel panel 20 supplied through the nu 3 and the brake press 5.

In this way, the closed cross-section shaping beam 30 formed by the roll former unit R is cut by the cutting device 7 positioned behind the roll former unit R as shown in FIG. 4. Cut to exact specifications.

In the roll forming system having such a configuration, the cutting device 7 according to the present embodiment cuts the cut portion of the closed cross-section shaping beam 30 at a time precisely at the rear of the roll former unit R so that the cut surface quality and its dimensional accuracy are correct. Will increase.

That is, in the configuration of the cutting device 7 according to the present embodiment, as shown in FIG. 4, the base plate 11 is provided at the rear lower portion of the roll former unit R as the device body.

On the base plate 11, a square base frame 13 is installed upright.

In addition, the guide frame 15 is installed in the horizontal direction between the base frame 11, the front side of the guide frame 15 is formed with a guide hole (H1) penetrating up and down.

On one side of the rear side of the guide frame 15, the rotating plate unit 40 for controlling rotation of the rotating plate 41 by a motor is configured.

Here, the specific configuration of the rotating plate unit 40, first, the drive motor 43 is installed on the lower side of the rear side on the guide frame 15, the rotating plate 41 is on the upper surface of the guide frame 15 The center of rotation is installed on the rotation shaft 45 of the drive motor 43 is configured to rotate by the operation of the drive motor 43.

Here, the drive motor 43 is preferably made of a step motor capable of controlling the rotation speed and rotation direction.

The mandrel bar unit 80 is configured on the rotating plate 41 to retreat the mandrel bar 81 for mounting the mandrel unit 50 by the spring force.

That is, the mandrel bar unit 80 forms a bar housing 83 in a cylinder having a predetermined length, and the bar housing 83 is fixed to one side of the rotating plate 41 at a rear end thereof.

A stopper block 85 is fixed to the other side of the rotating plate 41 on the axis of the bar housing 83, and a through hole H2 is formed in the center of the stopper block 85.

And the mandrel bar 81 is formed longer than the bar housing 83 is inserted into the bar housing 83, the mandrel on the front end of the mandrel bar 81 at the outer end of the bar housing 83 The unit 50 is fixedly installed, and a retainer 87 is formed at one rear side from the outside of the bar housing 83.

Here, the retainer 87 is disposed at a position between the rear end of the bar housing 83 and the stopper block 85.

The mandrel bar 81 has a rear end inserted into the through hole H2 of the stopper block 85 so as to be slidably movable.

A return spring 89 is provided between the retainer 87 on the mandrel bar 81 and the rear end of the bar housing 83 to provide restoring force to the mandrel bar 81.

That is, the return spring (89) is made of a coil spring and fitted on the mandrel bar (81).

In the rear of the rotary plate unit 40, a rotary cam unit 90 is configured to move the mandrel bar 81 forward by driving the rotary cam 91 on the guide frame 15.

That is, the cam unit 93 is installed at the lower side of the guide frame 15 to correspond to the rear of the rotary plate 41.

Here, the cam motor 93 preferably comprises a step motor capable of controlling the rotation speed and the rotation direction.

The rotary cam 91 is installed on the rotary shaft 95 of the cam motor 93 so that the outer circumferential cam surface C comes into contact with the rear end of the mandrel bar 81 at the rear of the rotary plate 41.

Here, as shown in FIG. 5, the outer cam surface C of the rotary cam 91 is formed by forming a stepped surface F having a predetermined length in a rotational center direction on one side of the outer peripheral surface.

On the other hand, the front end of the mandrel bar 81 is a mandrel unit 50 is mounted through the front mandrel 51 and the rear mandrel 53 in the state inserted into the closed cross-sectional forming beam 30 It is configured to support both sides inside the cutout.

Specific configuration of the mandrel unit 50 is a rear mandrel 53 is mounted on the front end of the mandrel bar 81, the front mandrel 51 is connected to the center of the rear mandrel 53 through a connecting bar 55 Connected and mounted.

Here, as shown in FIG. 6, the connection bar 55 is formed of a bar material having a rectangular cross section, which is integrally connected to each of the centers between the front mandrel 51 and the rear mandrel 53. It is preferable to make.

In addition, the front mandrel 51 and the rear mandrel 53, the closed cross-section shaping beam 30 is preferably formed along the inner cross-sectional shape.

And the upper cutting unit 60 is installed downward in the front upper side of the base frame 13, the cut portion of the closed cross-section shaping beam 30 supported by the front and rear mandrel (51, 53) by the cylinder drive It is configured to cut at the upper outer side through the upper cutting blade (61).

That is, the upper cutting unit 60 has an upper cylinder 63 installed downward in the front upper side of the base frame 13, the upper portion having a predetermined thickness at the tip of the operating rod 65 of the upper cylinder 63 The cutting blade 61 is installed downward.

At this time, the lower end of the upper cutting blade 61 is preferably formed in a sawtooth shape.

On the other hand, the lower cutting unit 70 is installed upward in front of the base plate 11 of the closed cross-section shaping beam 30 supported by the front and rear mandrel (51, 53) by the cylinder drive It is configured to cut the cut part from the bottom outer side through the lower cutting blade 71.

That is, in the lower cutting unit 70, a lower cylinder 73 is installed upward in the front of the base plate 11 to face the guide hole H1 of the guide frame 15, and the lower cylinder 73 At the tip of the operating rod 75, the lower cutting blade 71 having a predetermined thickness is installed upward to be guided up and down by the guide hole H1.

Here, the upper end of the lower cutting blade 71 is preferably formed in the shape of a sawtooth, like the upper cutting blade 61.

At this time, the upper and lower cutting blades 61 and 71 are determined so that the thickness thereof corresponds to the width between the front mandrel 51 and the rear mandrel 53.

Therefore, the operation of the cutting device for a roll forming shaping beam having the configuration as described above will be described with reference to FIGS.

First, as shown in FIG. 3, the steel sheet panel 20 which has passed through the uncoiler 1, the straightener 3, and the brake press 5 is guided to the roll former unit R to each roll former. (R1 to R10; some not shown) and then sequentially bent and molded to produce a closed cross-section shaping beam 30, the closed cross-section shaping beam 30, as shown in FIG. Guided along the guide frame 15 of the cutting device 7 according to the example is disposed in the state fitted to the mandrel unit 50 at the tip of the mandrel bar 81.

At this time, the front and rear mandrel (51, 53) is in a state of supporting both sides of the cut portion of the closed cross-section shaping beam 30 therein.

In this state, as shown in FIG. 7, when the upper cylinder 63 and the lower cylinder 73 are driven forward, the upper cutting blade 61 and the lower cutting blade 71 move the front and rear mandrel 51. The cut portion of the closed cross-section shaping beam 30 supported by the both sides of the inside is cut at the outside of the upper and lower sides by the reference numeral 53.

In this case, a brake press for forming a hole for various purposes for assembling the beams to be formed in the strip-shaped steel sheet panel 20 supplied from the straightener 3 on the cut-out portion of the closed cross-section shaping beam 30 up, down, left and right sides. In the step (5), the slot S is formed by pre-piercing.

That is, the front and rear mandrels 51 and 53 support the cutting stress by the upper and lower cutting blades 61 and 71 so that the cut surface of the closed cross-section shaping beam 30 is precisely and cleanly cut, and the upper And the cutting scrap of the closed cross-section shaping beam 30 cut by the lower cutting blades 61 and 71 is divided into four and discharged to the outside.

As described above, after the cut portion of the closed cross-section shaping beam 30 is cut, as shown in FIG. 8, the upper cylinder 63 and the lower cylinder 73 are driven backward to drive the upper cutting blade 61. The lower cutting blade 71 is returned to its original position.

Subsequently, the cam motor 93 is driven to rotate clockwise by 90 ° as shown in FIG. 9. When the cam motor 93 is driven to rotate, the mandrel bar 81 returns. The spring 89 moves backward by the length of the step surface F on the rotary cam 91.

Accordingly, the cut cross-section shaping beam 30 is moved to the rear with a front and rear mandrel (51, 53) a predetermined distance to secure a rotation radius around the rotating plate (41).

As such, the cut closed cross-section shaping beam 30 secures the rotation radius without interference, and as shown in FIG. 10, the driving motor 43 rotates counterclockwise by 90 °. do.

Then, the rotating plate 41 rotates the mandrel bar 81 laterally together with the cut closed section forming beam 30.

Subsequently, the cut-out closed section forming beam 30 is pulled out from the mandrel bar 81 by a separate extraction device or an operator, and thus, after taking out is completed, as shown in FIG. The mandrel bar 81 is moved to the initial position by the clockwise rotational drive of the drive motor 43, and the mandrel unit 50 is driven to rotate 270 ° clockwise of the cam motor 93 to the mandrel bar ( By advancing 81 forward, the front and rear mandrels 51 and 53 are moved to their initial positions to correspond to the cutouts of the closed section forming beam 30 to wait for the next cut.

1 is an overall conceptual diagram of a roll forming system to which a cutting press for a roll forming forming beam according to the prior art is applied.

2 is a block diagram of a cutting press for a roll forming forming beam according to the prior art.

3 is an overall conceptual view of a roll forming system to which a cutting device for forming a roll forming beam according to an embodiment of the present invention is applied.

Figure 4 is a side view of a cutting device for a roll forming shaping beam according to an embodiment of the present invention.

5 is a cross-sectional view of a cutting device for forming a roll forming beam according to an embodiment of the present invention along the line A-A of FIG.

6 is a cross-sectional view of a cutting apparatus for a roll forming shaping beam according to an embodiment of the present invention taken along the line B-B of FIG.

7 to 11 is a step-by-step state of use of the roll forming shaping beam cutting device according to an embodiment of the present invention.

Claims (17)

A cutting device for a roll forming beam, which is formed behind a roll former unit on a roll forming process line and cuts a cut portion of a roll forming beam which is formed into a closed cross section. An apparatus body configured to install a square base frame on a base plate formed at a rear lower portion of the roll former unit, and install a guide frame in a horizontal direction between the base frames; A rotating plate unit configured at one rear side of the guide frame to control rotation of the rotating plate by a motor at a predetermined angle; A mandrel bar unit configured on the rotating plate and configured to retract the mandrel bar by a spring force; A rotary cam unit configured on the guide frame at the rear of the rotary plate unit to move the mandrel bar forward by driving the rotary cam; A mandrel unit mounted to the front end of the mandrel bar and supporting both sides of the cut part through the front mandrel and the rear mandrel while being inserted into the closed cross section forming beam; An upper cutting unit installed downward on the front upper side of the base frame to cut a cut portion of the closed cross-section shaping beam supported by the front and rear mandrel by a cylinder driving from an upper outer side through an upper cutting blade; It is installed upward in front of the base plate opposite the guide hole of the guide frame to cut the cut portion of the closed cross-section shaping beam supported by the front and rear mandrel by the cylinder drive from the bottom outside through the lower cutting blade. Cutting device for forming a roll forming beam, characterized in that consisting of a lower cutting unit. In claim 1, The rotating plate unit A drive motor installed at a lower portion of one rear side of the guide frame; And a rotating plate disposed on an upper surface of the guide frame, the rotating plate having a rotation center installed on a rotation axis of the driving motor. In claim 2, The drive motor is A cutting device for forming a roll forming beam, characterized by comprising a step motor capable of controlling the rotation speed and the rotation direction thereof. In claim 1, The mandrel bar unit A bar housing formed of a cylinder having a predetermined length and having one end fixed to one side on the rotating plate; A stopper block fixedly installed at the other side of the rotating plate on the axis of the bar housing and having a through hole formed at a center thereof; It is formed longer than the bar housing is inserted into the bar housing, the rear mandrel of the mandrel unit is fixed to the front end of the outer side of the bar housing, a retainer is formed at one rear side from the outer side of the bar housing, the rear end A mandrel bar inserted into the through hole of the stopper block; And a return spring interposed between the retainer on the mandrel bar and a rear end of the bar housing to provide a restoring force to the mandrel bar. In claim 4, The retainer And a stopper block positioned at a position between the rear end of the bar housing and the stopper block. In claim 4, The return spring Cutting device for forming a roll forming beam, characterized in that the coil spring is inserted and installed on the mandrel bar. In claim 1, The rotating cam unit is A cam motor installed in the lower portion of the guide frame corresponding to the rear of the rotating plate; And a rotating cam installed on the rotating shaft of the cam motor such that a rear circumferential cam surface of the mandrel bar comes into contact with the rear of the rotating plate. In claim 7, The cam motor is A cutting device for forming a roll forming beam, characterized by comprising a step motor capable of controlling the rotation speed and the rotation direction thereof. In claim 7, The outer cam surface of the rotary cam is Cutting device for forming a roll forming beam, characterized in that it has a stepped surface stepped in a predetermined length in the direction of the center of rotation on one side of the outer peripheral surface. In claim 1, The mandrel unit A rear mandrel fixedly mounted to the tip of the mandrel bar; And a front mandrel connected to the center of the rear mandrel through a connecting bar. In claim 10, The connecting bar is Cutting device for forming a roll forming beam, characterized in that integrally connected to each one of the central both sides between the front mandrel and the rear mandrel. The method of claim 1 or 10, The front mandrel and the rear mandrel And the closed cross-section shaping beam is formed along an inner cross-sectional shape. The method of claim 1 or 10, The width between the front mandrel and the rear mandrel Cutting device for forming a forming beam, characterized in that configured to correspond to the thickness of the upper and lower cutting blade. In claim 1, The upper cutting unit An upper cylinder installed downward on the front upper side of the base frame; Cutting device for forming a roll forming beam, characterized in that it has a predetermined thickness, consisting of an upper cutting blade which is installed downward on the tip of the operating rod of the upper cylinder. The method of claim 1 or 14, The lower end of the upper cutting blade Cutting device for forming a roll forming beam, characterized in that formed in a sawtooth shape. In claim 1, The lower cutting unit A lower cylinder installed upwardly in front of the base plate to face the guide hole of the guide frame; A cutting device for forming a roll forming beam, characterized in that the lower cutting blade having a predetermined thickness, installed upwardly at the tip of the working rod of the lower cylinder and guided up and down by the guide hole. The method of claim 1 or 16, The upper end of the lower cutting blade Cutting device for forming a roll forming beam, characterized in that formed in a sawtooth shape.

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