KR100871862B1 - The jig device for co2 welding and the method thereof - Google Patents

Abstract

The present invention relates to a CO2 welding method of a frame and a welding jig device.

A fabrication step of forming a frame by welding a first piece of the "c" type and a second piece of the "ㅣ" type forming the bracket and the nut; A mounting step of supplying the frame between the support cylinder and the fixed block and mounting the frame to the base plate; A supporting step of fixing four inner directions of the frame by driving an inner cylinder of the supporting member after the mounting step; A fixing step of driving the cylinder of the support member to bring the frame into close contact with the fixed block and surrounding the nut and the bracket of the frame; A primary welding process for welding the bent surface of each corner of the frame, and a rotating process for rotating the base plate on which the frame is mounted;

And, the secondary welding process for welding the bottom of the bent portion of each corner of the frame exposed through the rotated base plate; By rotating the base member to release the frame and releasing the frame, the separation process of releasing the frame from the base member is sequentially performed to prevent the appearance of the frame from being deformed and to facilitate screwing, thereby improving quality and productivity. Let's do it.

Frame, base, base member, rotating cylinder, fixed block, inner cylinder, protective pin, finger, buffer

Description

CO2 welding method and its jig device {THE JIG DEVICE FOR CO2 WELDING AND THE METHOD THEREOF}

1 is a state diagram before coupling of the frame to which the present invention is applied.

2 is a combined state diagram for the usage of the frame to which the present invention is applied

Figure 3 is a process diagram for the CO2 welding method of the frame of the present invention.

4 is a plan view of a jig device to which the present invention is applied.

5 is a front view of a jig device to which the present invention is applied;

6 is an operating state diagram for a jig device to which the present invention is applied.

Figure 7 is a state diagram for the lug member of the present invention (a) the operating state of the protection pin for nut protection, (b) is an operating state of the finger for bracket protection.

Figure 8 is a side view of a rotating state of the base member of the present invention.

Figure 9 is a state in which the base plate is rotated to show the bottom of the present invention.

Description of the protection of the main parts of the drawing

100: frame 200: expectation 300: base member

400: rotation member 500: fixed block member 600: support member

700: buffer member

The present invention relates to a jig device for use in the CO2 welding of the pressed frame to produce the interior of the home appliances used in the kitchen.

In the process of manufacturing home appliances used in daily life, the frame is used to form the exterior of the product. The frame is first cut out by a predetermined dimension from a steel plate through a cutting operation, and the cut work is bent. Bent to a predetermined size and length, and then abutted was welded by welding.

During the production process, CO2 welding is used to weld the cut and bent frame. When CO2 welding is performed, the welding part of the frame is about enough to form a welding part through melting of steel (about 1500 to 1800 degrees). When the welding is performed in a heated state and heated, the welding chips in the heated state are splashed and adhered to the main surface of the welded part during the welding process. A frame for manufacturing a storage cabinet such as a washing machine or a refrigerator is formed.

However, when the frame is heated at a high temperature in the welding operation and then cooled, there is a problem in that the side straightness of the frame is deformed in a straight line, causing a warpage phenomenon. The welding chip sticking around the welding part generated during welding is fastened. There was a problem that can not be fastened to the bolt and nut to be stable.

As such, when the straightness of the frame is deformed after welding, or when the fastening element cannot be assembled by the welding chip, it is determined that the defective product is disposed of and discarded.

The present invention, which was created to solve the conventional problems, aims to prevent the freckle (bent or warp in the yellow direction) and the welding chip from sticking to the frame surface after the CO2 welding operation.

An object of the present invention is a manufacturing process of forming a frame by welding a first piece of the "c" type and a second piece of the "|" type formed with a bracket and a nut; A mounting step of supplying the frame between the support cylinder and the fixed block and mounting the frame to the base plate; A supporting step of fixing four inner directions of the frame by driving an inner cylinder of the supporting member after the mounting step; A fixing step of driving the cylinder of the support member to bring the frame into close contact with the fixed block and surrounding the nut and the bracket of the frame; A primary welding process for welding the bent surface of each corner of the frame, and a rotating process for rotating the base plate on which the frame is mounted; And, the secondary welding process for welding the bottom of the bent portion of each corner of the frame exposed through the rotated base plate; It will be sufficiently achieved by a method by sequentially rotating the base member to release the frame to sequentially release the frame from the base member to release the frame.

Welding method suitable for achieving the object of the present invention includes a base member rotatably installed on the upper portion of the base; A rotating cylinder member which transmits power to the shaft of the base member to rotate the base member at a working angle forward and backward; A fixed block member to which an outer surface of the frame is supplied to the base member to reach the outer surface; A support member fixed by a cylinder rod for simultaneously driving an inner surface and an outer surface of the frame supplied to the base member; A lug member for interlocking the nut protruding to the inner surface of the frame and the bracket protruding from the edge from the welding chip when the support member is driven; It can fully implement by the structure which consists of.

In a configuration sufficient to achieve the object of the present invention, the cylinder of the support member is the inner cylinder of the inner surface of the frame, the inner cylinder is composed of a rod for pressing the bent portion to be welded, and press the outer surface so that the frame is in close contact with the fixed block member It characterized in that the rod made of an outer cylinder configured.

In the configuration sufficient to achieve the object of the present invention, the lug member is fixed to the support rod for driving at the same time as the rod drive of the inner cylinder, and is installed in the holder to contact the hole inlet of the nut protruding into the inner surface of the frame It is characterized in that the protective pin made of a belium alloy.

In the configuration sufficient to achieve the object of the present invention, the lug member is installed at the rod end of the outer cylinder to drive when the frame is in close contact with the fixed block member and the insertion groove surrounding the bracket protruding from the outer surface of the frame when driving; Characterized by consisting of the fingers of the brass material formed.

In the configuration sufficient to achieve the object of the present invention, the base plate working angle of the base member is inclined at an angle of 130 ° to 150 ° from the base, and the base member is stopped at the base at the working angle and the shock absorbing member absorbs shock at the same time. Characterized in that installed.

In the configuration sufficient to achieve the object of the present invention, the base member is characterized in that the through-holes are formed to allow the welding operation to the fixed frame bottom in the rotated state.

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

1 is a state diagram before coupling of the frame to which the present invention is applied, and FIG. 2 is a state diagram for the usage of the frame to which the present invention is applied. 4 is a plan view of a jig apparatus for CO 2 welding, and FIG. 5 is a front view of a jig apparatus to which the present invention is applied.

In FIG. 1, the first frame 110 is bent to form a "c" shape, and the second frame 120 is formed to be a "ㅣ" shape to integrally form a bracket 123 at both ends. The inner side is formed while fixing the nut 121 for assembling the fastening element.

 When the first frame 110 and the second frame 120 are combined as shown in FIG. 2, the nut 121 of the second frame 120 is inserted into the first frame 120 to protrude toward the inner surface side of the frame 100. In this case, the bracket 123 protrudes upward from both ends of the frame 100.

CO2 welding is required at each of the bent corner positions A, B, C, and D of the frame 100.

The structure for welding the CO 2 to the frame 100 is installed as the base member 300 on the upper portion of the base 200 to be formed at a suitable height to work from the bottom, as described in Figures 3 to 5 Install it so you can.

The base member 300 is formed in a size sufficient to put the frame to be described later, the base plate 310 formed through the through hole 330 to see the bottom of the frame 100 to be supplied, and the base plate ( It consists of a shaft 320 to protrude to both sides of the 310.

The bearing 220 is inserted into the shaft 320 installed at both ends of the base plate 310, and the base plate 310 is fixed at the base 200 by fixing the bearing 220 to the upper part of the base 200. Allow to rotate

The shaft 320 penetrating the bearing 220 is connected to the rotating member 400 installed on the side of the base 200, and the base plate 310 may rotate by power.

The rotating member 400 has a configuration in which a motor for generating a driving force by a supplied power and a speed reducer for reducing the rotating force generated in the motor are connected, and the reduced driving force is transmitted to the shaft 320 through the driving shaft of the motor. The base plate 310 is rotated at a reduced speed.

The fixed block member 500 is installed at the outer surface of the frame 100 to the periphery of the through hole 330 bored in the base plate 310. That is, the fixing blocks 510 and 520 in which the lateral and longitudinal sides of the frame 100 are in contact with each other are fixed.

The support member 600 for fixing the inner surface of the frame 100 is installed at the center position of the base plate 310 and the opposite positions of the fixing blocks 510 and 520.

The support member 600 has an inner cylinder 610 and 620 for driving in the left and right directions of the inner surface of the frame 100 and another inner cylinder 630 for driving forward to the center of the base plate 310. Install.

The inner cylinders 610, 620, 630 are provided with rods 611, 621, 631 in a linear motion, and the middle of the rods 611, 621 of the inner cylinders 610, 620. Lug for installing the moving part 640, the base plate 310 is installed in the fixed plate 650 to rotate between the moving plate 640 and the fixed plate 650 in a 90 ° direction to press the inner surface of the frame 200 Install the member.

The lug member is composed of support rods 613 and 623, and the fixing rods 615 and 625 are installed on the support rods 613 and 623 so that the welding chips generated during the welding operation do not stick to the tips thereof. Secure the installation of the protective pin 660 made of alloy.

The support member 600 is installed at positions opposite to the installation positions of the fixed blocks 510 and 520 to further constitute outer cylinders 670 and 680 pressing the outer surface of the frame 100.

The outer cylinders 670 and 680 push the frame 100 installed between the fixed blocks 510 and 520 and the rods 611, 621 and 631 of the inner cylinder to the fixed blocks 510 and 520. In order to be in close contact, the rods 671 and 681 are provided at their ends.

Since the bracket 123 is protruded on the outer surface of the frame 100, the bracket is not installed in the configuration of the present invention to protect it, but as shown in FIG. 7A, the bracket is positioned at the position facing the bracket 123. The outer cylinder 690 in which the finger 693 in which the insertion groove 695 is formed on the rod 691 may be installed in an additional configuration.

And, the side of the base 200 can be stopped at the working angle position when the base plate 310 rotates, the shock absorbing member 700 is provided with a spring configured to absorb the shock when the stop, the base plate 310 ) Install it at the position where it is inclined at an angle of 130 ° ~ 150 °.

According to the present invention having the above configuration, the frame 100 is supplied to the base plate 310 of the base 200 through the frame fabrication process (S100) in which the first frame 110 and the second frame 120 are assembled. Then, it is supplied between the fixed block member 500 and the rods 611, 621, 631 of the inner cylinder to perform the mounting step (S200).

After performing the mounting process (S200), when the user supplies power, the inner cylinders (610 (620, 630)) by the hydraulic or pneumatic cylinder by the electrical signal of the controller 900, each rod 611 ) (621) 631 is moved forward, the support rods 613, 623 installed between the movement 640 and the fixed interval 650 is rotated 90 ° in a state of being in close contact with the inner surface of the frame 100 The supporting step S300 is implemented, which is understood to be the content of FIG.

At the same time as the supporting process (S300), the rods 671 and 681, which are driven forward by the electrical signals of the outer cylinders 670 and 680 of the support member 600, push the frame 100 to fix the fixed block member. When it is in close contact with the fixing blocks 510 and 520 of 500, the fixing process (S400) is performed. In this case, as described above, when the rod 691 of the outer cylinder 690, which may be installed at the bracket 123 position of the frame 100 in FIG. 7A, is advanced, the finger 693 is exposed to FIG. 7A. Likewise, the bracket 123 is temporarily concealed by the insertion groove 695.

After the fixing step (S400), the user performs the CO2 welding work on the outer and inner surfaces of the A, B, C, D positions of the fixed frame 100 to perform the primary welding step (S500).

When the primary welding process (S500) is completed, when the user applies an electrical signal to the rotating member 400 through the controller 900, the power generated in the rotating member 400 is reduced to rotate the shaft 320, the base Plate 310 is made upside down rotation process (S600).

When the base plate 310 is turned upside down, the bent portions A, B, C, and D of the bottom of the frame 100 may be confirmed through the through holes 330 drilled in the base plate 310 as shown in FIG. CO2 welding can be carried out through) so that the secondary welding step (S700) can be performed.

When the secondary welding process (S700) is finished, when the electrical signal is transmitted to the rotating member 400 through the controller 900, the shaft 320 is reversely rotated, the base plate 310 is rotated to the correct position, the support member When the rod of each cylinder of 600 is returned, the fixed state of the frame 100 is released, and the separation process S800 of separating the CO2 welded frame 100 from the base plate 310 is performed.

When CO2 welding is performed while fixing the inner and outer surfaces of the frame 100 as described above, the frame 100 is heated to a temperature (approximately 1500 degrees to 1800 degrees) to melt the steel to form a welded portion in the welding process. Even though the frame 100 itself is fixed in the cooling process, it does not deform and thus does not deform the shape of the frame.

In addition, since the protective chip 660 blocks the hole inlet of the nut, the welding chip generated during the CO2 welding process enters the screw groove of the nut protruding into the inner surface of the frame, thereby protecting the nut, and the outer surface of the bracket. As it protects with fingers and works, it prevents CO2 welded frame from being judged to be defective by welding chip to stabilize quality and productivity.

As described above, the present invention improves productivity and quality by preventing deformation of the screw after welding in the process of welding CO2 welded at a high temperature, or making it difficult to fasten the screw as the welding chip sticks to the nut and the bracket. This has the advantage of improving the working environment by automated equipment.

Claims (7)

A base member rotatably mounted on an upper portion of the base; A rotating member for transmitting power to the shaft of the base member to rotate the base member at a working angle forward and backward; A fixed block member to which an outer surface of the frame is supplied to the base member to reach the outer surface; A support member fixed by a cylinder rod for simultaneously driving an inner surface and an outer surface of the frame supplied to the base member; A lug member for interlocking the nut protruding to the inner surface of the frame and the bracket protruding from the edge from the welding chip when the support member is driven; Jig device for CO2 welding consisting of. According to claim 1, wherein the cylinder of the support member has an inner cylinder composed of a center of the inner surface of the frame, a rod for pressing the bent portion welded, and an outer side of the rod configured to press the outer surface to be in close contact with the fixed block member Jig device for CO2 welding, characterized in that made of a cylinder. The lug member of claim 1, wherein the lug member comprises a fixing rod fixed to a support rod driven simultaneously with a rod driving, and a protection pin of belium alloy installed on the fixing rod and in contact with a hole inlet of a nut protruding into an inner surface of the frame. Jig device for CO2 welding. According to claim 2, wherein the rod front end of the outer cylinder to drive when the frame is in close contact with the fixed block member, characterized in that made of a finger of the brass material formed with an insertion groove surrounding the bracket protruding from the outer surface of the frame when driving. Jig device for CO2 welding. According to claim 1, wherein the base plate working angle of the base member is inclined at an angle of 130 ° ~ 150 ° from the base, the base member is stopped at the working angle, characterized in that the shock absorbing member is installed at the same time the shock absorbing member is installed. Jig device for CO2 welding. The jig apparatus for welding CO2 according to claim 1, wherein the base member forms a through hole for welding operation so as to allow welding to be fixed to the fixed frame bottom in the rotated state. A fabrication step of forming a frame by welding a first piece of the "c" type and a second piece of the "ㅣ" type forming the bracket and the nut; A mounting step of supplying the frame between the support cylinder and the fixed block and mounting the frame to the base plate; A supporting step of fixing four inner directions of the frame by driving an inner cylinder of the supporting member after the mounting step; A fixing step of driving the cylinder of the support member to bring the frame into close contact with the fixed block and surrounding the nut and the bracket of the frame; A primary welding process for welding the bent surface of each corner of the frame, A rotation step of rotating the base plate on which the frame is mounted; And, the secondary welding process for welding the bottom of the bent portion of each corner of the frame exposed through the rotated base plate; And reversely rotating the base member to release the fixing of the frame, thereby sequentially performing a separation process of detaching the frame from the base member.

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