KR20130067437A - Supporting means using electromagnet, cutting or welding apparatus and method having thereof - Google Patents

Abstract

PURPOSE: A cutting or welding device and a method thereof are provided to improve work accuracy by cutting electro conductive members at right angle in a thickness direction during cutting or welding. CONSTITUTION: A cutting or welding device comprises a support unit(2). The support unit supports electro conductive members(1) and comprises an upper clamp(3) and a lower clamp(4). The upper clamp compresses downward the electro conductive members. The lower clamp supports upward the electro conductive members and is an electromagnet so that a cutting part or a welding part can be attached by electromagnetic force.

Description

Support means using electromagnets, cutting or welding apparatus and method including the same

The present invention relates to a support means using an electromagnet, a cutting or welding apparatus and method including the same, and more particularly, to an invention for preventing deformation of a member during cutting or welding using an electromagnetic force of the electromagnet.

In general, the mechanical cutting method has been mainly adopted for continuous work in the steel process. However, there was a problem that it is difficult to secure the right angle of the cutting surface due to the impact between the member and the cutting device when cutting.

In addition, even when using the laser cutting head to cut the leading and trailing end portions of the leading and trailing coils in a non-contact manner, edge waves or shape defects are generated due to deformation forces such as bending forces on the members during cutting. There was. In addition, in the case of such a shape defect, a difference occurs in the focal length of the laser, thereby causing a difference in the amount of cutting, making the cutting work difficult, thereby lowering the productivity.

An object of the present invention is to provide a support means using an electromagnet to remove work defects caused by impact or edge waves generated during cutting or welding of an electrically conductive member, and a cutting or welding device including the same.

The support means according to an embodiment of the present invention is composed of an upper clamp for crimping the electrically conductive member from above and a lower clamp for supporting the electrically conductive member from below, and the lower clamp of the electrically conductive member during cutting or welding. It may be characterized in that the electromagnet attaching the cut portion or the weld by the electromagnetic force in order to reduce the deformation of the cut or weld.

In addition, the support means according to an embodiment of the present invention may be characterized in that the lower clamp provides an extension portion formed extending in the cutting or welding direction than the upper clamp.

In addition, the lower clamp of the support means according to an embodiment of the present invention is composed of a symmetrical portion symmetrical with the upper clamp and a scrap table portion which is an electromagnet for attaching the cut or welded portion, the scrap table portion is a prior electroconductive member A front end table for attaching and a rear end table for attaching a trailing electroconductive member may be provided, and the front end table and the rear end table may be spaced apart to secure space for cutting or welding.

In addition, the cutting or welding device according to another embodiment of the present invention, the cutting means for cutting or welding the support means, the electrically conductive member, and whether or not the work performed by the cutting or welding means of the lower clamp It may be configured as a control means that can control whether or not magnetization.

In addition, the control means of the cutting or welding apparatus according to another embodiment of the present invention is a sensor unit for detecting a gap change of the electrically conductive member according to the cutting or welding and whether the lower clamp magnetization according to the detected gap change It may be characterized in that it comprises a control unit provided to control.

In addition, the cutting or welding method according to another embodiment of the present invention relates to a method for cutting or welding an electrically conductive member, the position step of the cutting or welding portion of the electrically conductive member is located on the lower clamp of the electromagnet, the lower When the current flows through the clamp and magnetizes, the cutting part or welding part is attached to the lower clamp, the cutting part or welding part is cut or welded by cutting or welding means, and the cutting part or weld part is cut or welded. Determination step of detecting the gap change of the cut portion or the weld portion, the control step of controlling the magnetization of the lower clamp in accordance with the determination of the determination step and the departure to leave the cut portion or weld portion during non-magnetization of the lower clamp Can be performed in steps.

In addition, in the determining step of the cutting or welding method according to another embodiment of the present invention, if a gap is detected by a gap sensor detecting a gap change of the cutting part or the welding part, it is determined that the cutting is performed, and when the gap is not detected It can be characterized in that it is determined by welding.

The support means using the electromagnet according to the present invention, the cutting or welding apparatus and method including the same can obtain a cutting surface secured in the thickness perpendicularity of the conductive member at the time of cutting or welding to improve the accuracy of the operation to reduce the defects Therefore, it is effective to produce high quality products. This has the economic advantage of improving efficiency throughout the process.

Figure 1a is a schematic perspective view showing a supporting means according to a first embodiment of the present invention, Figure 1b is a cross-sectional view showing a force acting on the electrically conductive member according to the first embodiment of the present invention.
Figure 2a is a schematic perspective view showing a support means according to a second embodiment of the present invention, Figure 2b is a cross-sectional view showing a force acting on the electrically conductive member according to the second embodiment of the present invention.
Figure 3 is a schematic perspective view showing a cutting or welding apparatus according to an embodiment of the present invention.
4 is a flowchart illustrating a cutting or welding method according to an embodiment of the present invention.

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings. It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the inventive concept. Other embodiments falling within the scope of the inventive concept may readily be suggested, but are also considered to be within the scope of the present invention.

The same reference numerals are used to designate the same components in the same reference numerals in the drawings of the embodiments.

FIG. 1A is a schematic perspective view showing a supporting means 2 according to a first embodiment of the present invention, and FIG. 1B is a cross-sectional view showing a force acting on the electrically conductive member 1 according to the first embodiment of the present invention. to be.

1A and 1B, the support means 2 according to an embodiment of the present invention serves to support the electroconductive member 1, and for this purpose, the upper portion of the electroconductive member 1 is crimped from above. It may be composed of a clamp (3) and a lower clamp (4) for supporting the electrically conductive member (1) from below.

The lower clamp 4 is composed of an electromagnet for attaching the electroconductive member 1 by generating an electromagnetic force (EF), which is an attraction. This is because the cutting portion of the electrically conductive member 1 is caused by bending force or edge wave caused by impact during cutting by mechanical means or heat deformation during cutting or welding by a laser cutting head. It is for preventing the welding part 11 from being deformed.

The reason why the deformation of the cut portion or the weld portion 11 is prevented is that the cut portion subjected to the deformation force S when the stress S during cutting or welding is lowered relative to the electrically conductive member 1 or When the welding part 11 is physically supported by the lower clamp 4, and the deformation force S is raised relative to the electrically conductive member 1, the lower clamp 4, which is an electromagnet, is the cutting part or the welding part. This is because the electromagnetic force EF, which serves to press (11) in the downward direction opposite to the deformation force S, is generated to cancel the deformation force S. FIG.

In addition, since the deformation force S is canceled, the collision due to deformation does not occur between the electrically conductive members 1 to be cut or welded, and there is no difference in height in the thickness direction between the scraps of the electrically conductive members 1. There is no difference in laser focal length. This results in a cutting surface having a perpendicularity in the thickness direction. This improves the accuracy of the work, reduces the defective rate, and produces the effect of producing high quality products.

On the other hand, when cutting or welding, the upper clamp (3) should be located at a certain distance away from the cutting portion or the welding portion (11), so that the lower clamp (4) is the upper clamp ( 3) it may have a shape to provide an extension portion 41 extending in the direction of the cut or welded portion (11).

However, this is an embodiment in which the cutting or welding work is performed on the upper surface of the conductive member 1, and the cutting or welding work is performed in the under surface of the conductive member 1. In the embodiment, the upper clamp 3 may have an extended portion 41 extending in the cutting or welding portion 11 direction from the lower clamp 4. In this case, however, the upper clamp 3 will be composed of an electromagnet.

FIG. 2A is a schematic perspective view showing a supporting means 2 according to a second embodiment of the present invention, and FIG. 2B is a sectional view showing a force acting on the electrically conductive member 1 according to the second embodiment of the present invention. to be.

2A and 2B, the lower clamp 4 is a symmetrical portion 42 symmetrical with the upper clamp 3 and a scrap table portion 43 which is an electromagnet for attaching the cut or weld 11. Can be configured.

The symmetric part 42 serves to fix the electrically conductive member 1 by tightening the electrically conductive member 1 together with the upper clamp 3. However, the symmetry part 42 need not be made of an electromagnet. This is because the symmetric part 42 is located at a part spaced apart from the cut part or the weld part 11 by a certain distance, and thus there is no influence of the deformation force S acting on the cut part or the weld part 11.

The scrap table portion 43 is composed of a front table 44 for fixing the preceding electroconductive member 12 and a rear end table 45 for fixing the trailing electroconductive member 13. In addition, the scrap table portion 43 should be made of an electromagnet. This is the same as the above-described principle of generating electromagnetic force EF to counteract the deformation force S of the cut or welded part 11.

On the other hand, the front table 44 and the rear table 45 may be configured to be spaced apart from each other by a predetermined distance. This is to secure space through which cutting elements such as saw blades can pass after cutting when cutting by mechanical means, and to secure space through which heat energy generated when cutting by welding or laser can be passed.

Figure 3 is a schematic perspective view showing a cutting or welding apparatus according to an embodiment of the present invention.

3, the cutting or welding apparatus according to another embodiment of the present invention is a cutting or welding means (5) and the cutting for cutting or welding the support means (2), the electrically conductive member (1) Alternatively, the control means 6 may control the magnetization of the lower clamp 4 according to whether the welding means 5 performs work.

The cutting means 5 may be a cutting means of a mechanical method or a cutting means by a laser cutting head. The welding means 5 may also be a welding means 5 such as oxygen welding, electric welding, arc welding, or the like. That is, the present invention is not limited to the cutting or welding means 5 in the form shown in FIG. 3 and includes all cases of the means for generating the deformation force S in the member by cutting or welding.

 The control means 6 is connected to the sensor unit 61 and the sensor unit 61 to confirm by the gap sensor that the cutting or welding by the cutting or welding means 5 is performed, the sensor unit ( The controller 62 may further include a control unit 62 provided to control whether the lower clamp 4 is magnetized according to the data on whether the cutting or welding operation is sensed in step 61).

That is, when the sensor unit 61 detects data that the cutting or welding operation is still being performed, the control unit 6 cuts off the current flowing through the lower clamp 4 so that the magnetic portion of the lower clamp 4 When the sensor unit 61 senses data that the cutting or welding operation is completed, the current flowing through the lower clamp 4 is interrupted to stop magnetization of the lower clamp 4, thereby non-magnetizing it. (non magnetization) to control.

In addition, when the lower clamp 4 is non-magnetized by the control means 6, the electromagnetic force EF is removed between the lower clamp 4 and the electrically conductive member 1 where the work is completed. The scrap cut from the member 1 or the welded electrically conductive member 1 may be separated. Alternatively, the current may be controlled to flow in the opposite direction to generate and release the electromagnetic force EF, which is a repulsion, in the lower clamp 4.

Therefore, the scrap cut from the electrically conductive member 1 or the electrically conductive member 1 welded can be moved by a conveyor belt or the like, thereby generating an additional advantage of automating a subsequent process.

4 is a flowchart illustrating a cutting or welding method according to an embodiment of the present invention.

Referring to FIG. 4, the cutting or welding method according to another embodiment of the present invention is a method of cutting or welding the conductive member 1, wherein the conductive member 1 is connected to the lower clamp 4. Positioning step (s1) to be positioned, the attachment step (s2) to which the cut or welded portion 11 is attached to the lower clamp (4) by magnetization of the lower clamp (4), cutting or welding (s3) Determination step (s4) for detecting and determining whether to cut or weld, the control step (s5) for controlling the magnetization of the lower clamp (4) and the cut or weld 11 is separated from the lower clamp (4) It consists of a departure step (s6).

Positioning step (s1) is a step in which the cut or weld 11 of the electroconductive member 1 is positioned on the lower clamp (4) which is an electromagnet, and is a basic step in a continuous process such as a steel process. An apparatus such as a conveyor belt may be used as a means of movement of the electroconductive member 1.

In the attaching step (s2), a current flows through the lower clamp (4) to magnetize (s21) and an electromagnetic force (EF), which is an attractive force, is applied to the cutout or welded part 11 so that the cutout or welded part 11 is operated. The step (s22) is attached to the lower clamp (4).

Cutting or welding step (s3) is the cutting portion or the welding portion 11 attached to the lower clamp (4) cutting means (5) such as mechanical or laser cutting method or welding means (5) such as oxygen welding, electric welding Is a step of cutting or welding. In addition, cutting or welding step (s3) as shown in Figure 5 the cutting or welding means 5 is moved along the dotted line shown on the electrically conductive member 1 to perform a cutting or welding operation. However, the cutting or welding path is not limited to the path along the dotted line shown in FIG. 5.

Determination step (s4) is a sensing step (s41) for detecting the change in the gap of the cut or weld 11, the sensor unit 6 is followed by the cutting or welding means 5 and the cutting or welding operation is completed; The determination step (S42) is performed to determine whether the cutting or welding operation is completed according to the detected data.

In addition, the determining step (s42) is carried out by determining that the gap change is detected by the gap sensor and the cutting portion or the weld portion is cut if the gap is detected, and if the gap is not detected by welding. That is, during the cutting operation, if a gap is detected to the end of the cutting unit 11, it is determined that the work is completed, and if the gap is not detected, the operation is judged to be in progress. If not, it is judged to be completed and if a gap is detected, it is judged to be in progress.

The control step s5 is a step of controlling whether or not the lower clamp 4 is magnetized according to the determination of the determination step s4. That is, if it is determined that the cutting or welding operation is still being performed, the current is supplied to the lower clamp 4 so as to maintain the electromagnetic force EF (s52), and if it is determined that the cutting or welding operation is completed, the lower portion By controlling the current flowing through the clamp 4 to stop the generation of the electromagnetic force EF, the control s51 is performed.

The detaching step (s6) is when the cutting or welding operation is completed in the control step (s5) to control (s51) to block the current flowing in the lower clamp (4), if the lower clamp (4) is non-magnetic In this case, the cutting part or the welding part 11 is separated from the lower clamp 4.

1: conductive member 11: cutting or welding
12: preceding conductive member 13: trailing conductive member
2: support means 3: upper clamp
4: lower clamp 41: extension part
42: symmetry part 43: scrap table part
44: front end table 45: rear end table
5 cutting or welding means 6 control means
61 sensor unit 62 control unit

Claims (7)

As support means for supporting the electrically conductive member,
The support means is composed of an upper clamp for pressing the electrically conductive member from above and a lower clamp for supporting the electrically conductive member from below,
The lower clamp is an electromagnet for attaching the cut or welded portion by electromagnetic force to reduce deformation of the cut or welded portion of the electrically conductive member during cutting or welding.
The method of claim 1,
And the lower clamp provides an extension part formed extending from the upper clamp portion in the cutting or welding direction.
The method of claim 1,
The lower clamp is composed of a symmetrical portion symmetrical with the upper clamp and a scrap table portion which is an electromagnet attaching the cut or welded portion,
The scrap table portion provides a front end table for attaching the preceding electroconductive member and a rear end table for attaching the trailing electroconductive member;
And the front end table and the rear end table are spaced apart to secure space for cutting or welding.
Claim 1 to 3 support means;
Cutting or welding means for cutting or welding the electrically conductive member; And
Cutting or welding device comprising a control means for controlling the magnetization of the lower clamp according to whether the cutting or welding means to perform the work.
The method of claim 4, wherein
The control means includes a sensor unit for detecting a gap change of the electrically conductive member due to cutting or welding, and a control unit provided to control whether or not the lower clamp is magnetized according to the detected gap change. Welding equipment.
A method of cutting or welding an electrically conductive member,
Positioning step is located on the lower clamp of the electro-magnetism cut or welded portion of the conductive member;
An attachment step of attaching the cutting part or the welding part to the lower clamp when current flows through the lower clamp to magnetize the lower clamp;
A cutting or welding step in which the cutting part or the welding part is cut or welded by cutting or welding means;
A determination step of determining whether the cut part or the weld part is cut or welded by sensing a gap change of the cut part or the weld part;
A control step of controlling magnetization of the lower clamp in accordance with the determination of the determination step; And
Cutting or welding method comprising a leaving step of leaving the cut or welded when the non-clamping of the lower clamp.
The method according to claim 6,
The determining step is a cutting or welding method, characterized in that the gap sensor detects the gap change of the cut or welded part is determined as a cut if a gap is detected, and if the gap is not detected as a weld.

Images