KR20090034561A - Magnetic jig apparatus for laser welding - Google Patents

Abstract

A magnetic jig apparatus for laser welding is provided to control exact position by fixing upper and lower welded objects with using upper and lower electromagnets and moving upper and lower welded objects. An electromagnet jig apparatus for laser welding comprises: a base plate(2); a lower jig set(4) equipped with a plurality of jigs; a lifting unit(6) vertically arranged in left and right of the lower jig set; and an upper jig set(8) equipped with a plurality of jigs(10) fixing the upper welded object with the magnetic force. The lower jig set is arranged in the central part of the base plate at regular intervals. The lower welded object is fixed with the magnetic force. The lifting unit comprises: forward and backward guide rails(26,28); a lifting member(30) which vertically slides between the forward and backward guide rails; a screw bar(34); and an electric motor(42) operating the screw bar.

Description

Electromagnet jig device for laser welding {MAGNETIC JIG APPARATUS FOR LASER WELDING}

The present invention relates to an electromagnet jig device for laser welding, and more particularly, by using the upper and lower electromagnets to fix the upper and lower welding objects, and to accurately maintain the gap between the upper and lower welding objects, welding operation The present invention relates to an electromagnet jig device for laser welding.

In general, the jig device is a device for fixing a work object during cutting, sheet metal, welding, etc. of the work, and the clamping force and the restriction part are different for each operation, and the structure of the support device is different. Of course.

Considering the above, one example of the conventional jig device will be described. As shown in FIG. 6, the locator 104 on which the clamping portion 102 of the steel sheet 100, which is a work object, is seated, and a cylinder operated by pneumatic or hydraulic pressure ( 106, a piston rod 108 which performs the retraction operation by the working pressure in the cylinder 106, and a hinge fixed to one side of the locator 104, and connected to one end of the piston rod 108. It comprises a clamper 110 for clamping or un-clamping the steel plate 100 while the hinge movement by the reciprocating motion of the piston rod (108).

That is, when hydraulic pressure is supplied to the cylinder 106, the piston rod 108 is raised while rotating the clamper 110 clockwise with respect to the hinge, so that one end of the clamper 100 is lowered and the locator is lowered. By clamping the clamping part 102 of the steel plate 100 seated on the 104, the steel plate 100 is fixed and subsequent welding work may be performed.

However, in the above jig device, there is a problem in that the regulation position is limited by clamping only through the edge of the steel sheet.

In particular, the jig device as described above is not provided with a means for maintaining the gap between the upper and lower steel plates, the gap between the upper and lower steel sheets to be welded is not possible because the gap between the upper and lower steel sheets can not be maintained. There is a problem that cannot be used for laser welding.

Therefore, the present invention has been invented to solve the above problems, an object of the present invention is to use the upper and lower electromagnets to fix the upper and lower welding objects, so that the upper side jig can be moved up and down by the power transmission means. Accordingly, the present invention provides an electromagnet jig device for laser welding, which enables accurate position control and maintains the gap between the upper and lower welding targets as precisely as required, thereby facilitating the welding operation.

The present invention to achieve the above object, the base plate;

A lower jig set having a plurality of jigs arranged at regular intervals at a central portion of the base plate to fix lower welding objects by magnetic force;

A lifting mechanism disposed vertically on left and right sides of the lower jig set;

Including an upper jig set which is provided by a plurality of jigs to be fixed by the magnetic force to the upper welding object is arranged at a predetermined interval from each other on a rotating shaft that is controlled by an independent electric motor while being lifted by the lifting mechanism. It provides an electromagnet jig device for laser welding.

The lower jig forming the lower jig set has a shape of approximately "Y", and a coil is disposed to selectively act as an electromagnet so that the central strut portion is fixed on the base plate, and between the front and rear protrusions. Characterized in that the positioning pin for determining the loading position of the lower welding object

In the above positioning pin is characterized in that it is configured to be elevated by a hydraulic cylinder (내에) embedded in the lower jig.

The elevating mechanism includes a front and rear guide rails which are erected at regular intervals in front and rear on left and right sides of the lower jig set;

An elevating member disposed to be slidable up and down between the front and rear guide rails;

And a transmission means comprising a screw rod screwed through the central portion of the elevating member, and an electric motor for driving the screw rod.

The upper jig forming the upper jig set has a shape of approximately "Y", and a coil is disposed to selectively act as an electromagnet so that the end of the central strut is fixed on the rotation axis, and between the front and rear protrusions. It characterized in that the positioning pin for determining the loading position of the upper welding object.

Wherein the positioning pin is characterized in that it is configured to be elevated by the hydraulic cylinder (내에) embedded in the upper jig.

As in the above configuration, the present invention forms the upper and lower jigs by electromagnets, and by positioning positioning pins, the upper and lower welding objects can be loaded firmly and easily at the correct positions, and after completion of the welding operation, the upper side The jig set can be extracted after raising the jig set upwards, so that the extraction operation can be easily performed.

And the height of the upper welding object can be adjusted by the lifting mechanism, it is possible to easily adjust the gap between the upper and lower welding objects required for laser welding.

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

1 and 2 are a perspective view and a longitudinal sectional view of a jig device for laser welding according to the present invention, wherein the jig device according to the present invention is disposed on a base plate 2 having a predetermined area.

That is, the lower jig set 4 is disposed at the center portion of the base plate 2, and the lifting mechanism 6 is disposed in the vertical direction on the left and right sides thereof, and the upper jig set (up) is located above the lifting mechanism 6. 8) is arranged.

The lower jig set 4 includes a plurality of jigs 10 arranged in the transverse direction at regular intervals from each other, and the jig 10 has a substantially “Y” shape and has a central lower support 12. ) Is fixed on the base plate (2), the lower welding object is placed on the upper surface of the front and rear protrusions (14, 16) protruding from the upper side of the support (12).

In addition, a positioning pin 18 is disposed at the center between the front and rear protrusions 14 and 16, and the positioning pin 18 has a hydraulic cylinder 20 embedded in the jig 10 as shown in FIG. 3. The lift is made by the), the hydraulic cylinder (20) is to be operated by the hydraulic pressure (流 壓) supplied from the outside to lift the positioning pin (18).

In the above, the hydraulic pressure refers to the working hydraulic pressure or pneumatic pressure, and the hydraulic pressure or the pneumatic pressure can be used according to the working environment without being limited to any one, and in the drawings of the present invention, pneumatic pressure Is displayed.

In addition, the jig 10 is disposed in the jig 10 so that when the power is supplied to the coil 22 from the outside, the jig 10 is configured to be an electromagnet, and the power supplied to the coil 22 and The hydraulic pressure supplied to the hydraulic cylinder 20 is controlled by the controller 24. Since the control configuration and method thereof are well known, a detailed description thereof will be omitted.

In addition, the elevating mechanism 6 is a front and rear guide rails (26) and (28), and the front and rear guide rails (26) which are erected at regular intervals on the left and right sides of the lower jig set (4). It comprises a lifting member 30, which is arranged to be slidable up and down between) and a transmission means for raising and lowering the lifting member (30).

In the above, there are a number of well-known techniques for arranging the elevating member 30 on the front and rear guide rails 26 and 28 so that the elevating member 30 can be elevated. However, in the present invention, the front guide rail as shown in FIGS. 1 and 4. A guide groove 32 having a predetermined length up and down is formed on a rear surface of the rear surface 26 and a front portion of the rear guide rail 28 facing the rear surface thereof, so that the front and rear ends of the elevating member 30 are formed on the guide groove 32. The example which combined so that up-and-down slide movement is shown is shown.

In addition, the transmission means for elevating the elevating member 30 includes a screw rod 34 which is screwed through the central portion of the elevating member 30, and an electric motor 36 for driving the screw rod 34. It is done by

Therefore, as the screw rod 34 rotates according to the rotational direction of the electric motor 36, the lifting member 30 is lifted.

And the upper jig set 8 and the rotating shaft 38 is rotatably coupled to the lifting member (30). It comprises a plurality of jigs 40 arranged in the transverse direction at a predetermined interval on the rotary shaft 38, the rotary shaft 38 by the electric motor 42 is disposed on one side or both ends. Will rotate.

In addition, the jig 40 is formed in the same shape as the lower jig 10, the central strut 44 portion is fixed to the rotary shaft 38 is interlocked with the rotary shaft 38, the freedom of the strut 44 An upper welding object is fixed to the front and rear protrusions 46 and 48 formed before and after the protrusion.

In addition, a positioning pin 50 is disposed at the center between the front and rear protrusions 46 and 48, and the positioning pin 50 has a hydraulic cylinder 52 embedded in the jig 40 as shown in FIG. 3. The lift is made by the), the hydraulic cylinder (52) is to be operated by the hydraulic pressure (流 壓) supplied from the outside to lift the positioning pin (50).

In the above, the hydraulic pressure refers to the working hydraulic pressure or pneumatic pressure, and the hydraulic pressure or the pneumatic pressure can be used according to the working environment without being limited to any one, and in the drawings of the present invention, pneumatic pressure Is displayed.

In addition, when the coil 54 is disposed in the jig 40 and the power is supplied to the coil 54 from the outside, the jig 40 is configured to be an electromagnet, and the power supplied to the coil 54 The hydraulic pressure supplied to the hydraulic cylinder 52 is controlled by the controller 24. Since the control configuration and method thereof are well known, the detailed description thereof will be omitted.

Looking at the loading process of the welding target object using the jig device of the present invention made as described above, it is made as shown in FIG.

That is, in the initial state as in S1 of FIG. 5A, the controller 24 controls the electric motor 42 to rotate the jig 40 of the upper jig set 8, thereby providing the front and rear protrusions 46 and 48. Upper and lower welding objects 56, 58 on the front and rear protrusions 16, 18, 46, 48 of the upper jig 40 and the lower jig 10, with the upper side facing upward. Put it on.

Of course, when the upper and lower welding objects 56 and 58 are placed on the upper and lower jig 40 and 10 as described above, the positioning pins disposed on the upper and lower jig 40 and 10 ( The hydraulic pins are supplied to the hydraulic cylinders 52 and 20 so that the 50 and 18 can protrude, and the positioning pins are not shown in the positioning grooves formed in the upper and lower welding objects 56 and 58. By allowing the 50 and 18 to be inserted, the upper and lower welding objects 56 and 58 are placed at the correct positions.

As described above, the upper and lower jig 10, 40, the upper and lower welding objects 56, 58 in the state of laying the power to the coil 22, 54 disposed on the jig 10, 40. When the jig becomes an electromagnet as a whole, the upper and lower welding objects 56 and 58 are firmly fixed to the jig 10 and 40 by the magnetic force.

In this state, as shown in S2 of FIG. 5B, the electric motor 42 is controlled to rotate the upper jig 40 to face downward, and again, the electric motor 36 of the lifting mechanism 6 is controlled to S3 of FIG. 5C. As described above, when the lifting member 30 is lowered as desired, the loading of the upper and lower welding objects 56 and 58 is completed.

At this time, since the gap of the upper and lower welding objects 56, 58 is determined according to the height of the lifting member 30, the laser welding can be lowered to a gap that can be ideally performed.

After the laser welding is completed in the above state, the power applied to the coils 22 and 54 of the jig 10 and 40 is cut off, the upper jig set 8 is raised, and the jig 40 is As shown in the initial state, the upwardly upwardly welded workpiece is then extracted.

When the welding object is extracted after returning the upper jig set 8 to the initial state after shutting off the power applied to the coils 22 and 54 of the upper and lower jig 40 and 10 as described above, The jig 10 is extracted from the raised.

However, when the welding object is to be extracted from the upper jig 40 according to the following working conditions, first, the power supply applied to the lower jig 10 is cut off, and then the upper jig set 8 is returned to the initial state. By the magnetic force of the) the welding object rises with the upper jig 40 and is placed toward the upper side, so it may be extracted at this time.

In addition, if the size management of the upper and lower jig 40, 10 in the loading process of the upper and lower welding objects 56, 58 as described above, the curvature dimensions of the upper and lower welding objects 56, 58 Even if there is a slight error in the upper and lower welding objects 56, 58 by the strong magnetic force close to the upper and lower jig 40, 10 can be corrected.

Although the preferred embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and those of ordinary skill in the art can easily invent and equalize the same from the embodiments of the present invention. It includes all changes in the ranges that become.

1 is a perspective view of an electromagnet jig device for laser welding according to the present invention.

2 is a longitudinal cross-sectional view of FIG.

3 is a cross-sectional view taken along the line AA of FIG.

4 is a sectional view taken along line B-B in FIG.

5A-5C are stepwise operational state diagrams of the present invention.

6 is a view showing an example of a conventional jig device.

Claims (6)

A base plate; A lower jig set having a plurality of jigs arranged at regular intervals at a central portion of the base plate to fix lower welding objects by magnetic force; A lifting mechanism disposed vertically on left and right sides of the lower jig set; Including an upper jig set which is provided by a plurality of jigs to be fixed by the magnetic force to the upper welding object is arranged at a predetermined interval from each other on a rotating shaft that is controlled by an independent electric motor while being lifted by the lifting mechanism. Electromagnet jig device for laser welding, characterized in that made. 2. The lower jig forming the lower jig set has a coil of a shape such that the central jig is fixed on the base plate so that the lower jig may have an approximately "Y" shape and selectively act as an electromagnet. An electromagnet jig device for laser welding, characterized in that a positioning pin for determining a loading position of the lower welding object is disposed between the protrusions. The electromagnet jig device for laser welding according to claim 2, wherein the positioning pin is configured to be elevated by a hydraulic cylinder built in the lower jig. According to claim 1, The lifting mechanism is the front and rear guide rails which are set up at a predetermined interval on the front and rear on the left and right of the lower jig set; An elevating member disposed to be slidable up and down between the front and rear guide rails; Electromagnet jig device for laser welding, characterized in that it comprises a screw rod penetrating the central portion of the elevating member and a transmission means consisting of an electric motor for driving the screw rod. The upper jig forming the upper jig set has a coil of a shape such that the upper jig has a shape of approximately "Y" and can be selectively acted as an electromagnet so that the end of the central strut is fixed on the rotation axis. Electromagnet jig device for laser welding, characterized in that the positioning pin for determining the loading position of the upper welding object is disposed between the projections. 6. The electromagnet jig device for laser welding according to claim 5, wherein the positioning pin is configured to be elevated by a hydraulic cylinder embedded in the upper jig.

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