Automatic welding system using unit guide rail rotating clamp and welding robot

Abstract

The invention relates to an automatic welding system using a unit rail rotating jig and a welding robot. Specifically, in the prior art, when a unit guide rail used on a container ship unit block is welded, L-shaped steel is cut into specified specifications and then is welded, and a crane needs to rotate in the direction in the welding process. According to the automatic welding system using the unit guide rail rotating clamp and the welding robot, automatic equipment is developed for automatic direction rotation, and meanwhile welding is automatically carried out through the welding robot.

Description

Technical Field

[0001] This invention relates to an automated welding system utilizing a unit guide rail rotary fixture and a welding robot.

[0002] Specifically, in the prior art, when welding unit guide rails used on container ship unit blocks, L-shaped steel is cut to specified specifications before welding. However, a crane is used to rotate the direction during the welding process. The present invention utilizes a unit guide rail rotating fixture and an automatic welding system of a welding robot to develop automated equipment to automatically rotate the direction, while the welding robot automatically performs the welding. Background Technology

[0003] In container ship unit blocks, more than 16 identical unit guide rail skeleton structures are set at the top and bottom of the unit block with a 30m reference. The loading engineering of container ships is of great importance.

[0004] like Figure 6 As shown, when setting up the lower loading unit guide rail, the use of large equipment such as forklifts becomes difficult due to the limited working space (approximately 1.7m). It is necessary to use more than 3 hydraulic cranes to align the vertical positions of each area, and to use chain trolleys to align the front, back, left, and right sides based on the experience of the operators.

[0005] like Figure 7 As shown, in the existing unit guide rail manufacturing process, L-shaped steel is cut at 30m intervals on the workbench, and two steel sections are used to maintain the “┘└” shape. Then, end components (Pads) are temporarily welded between the “┘└”. After that, the end components are welded by rotating the unit guide rail 90° to the left, and then the crane is used to rotate it 180° to the right to perform the welding. The actual efficiency is not good.

[0006] When manufacturing the unit guide rail, the width of the end component that can be fixed between the two steel sections forming a "┘└" is 36mm and the depth is 120mm. It is difficult to reach in and weld, so welding rods are used for manual welding.

[0007] In addition, such as Figure 8 As shown, between the unit guide rail steel “┘└”, 16 longitudinal (35mm×35mm×120mm) and 1 transverse (1,495mm×35mm×35mm) end members are used to manufacture the unit guide rail. The longitudinal end members are arranged at approximately 1600mm intervals to manufacture the unit guide rail.

[0008] Because the actual unit guide rails deviate from their design drawings, they may get stuck when loading containers, or wobble due to the wide gaps.

[0009] In addition, reduced precision in the loading of ship unit blocks or shrinkage and expansion during welding of associated unit blocks can also lead to deviations.

[0010] Furthermore, even if the unit guide rails of each unit block accurately meet the precision benchmark during the hull assembly process, the cumulative deviations between the unit blocks during the assembly operation will eventually cause the unit guide rails to deviate from each other.

[0011] Furthermore, since the unit guide rail frame structure has separate pads and angle unit guide rails, the amount of steel used increases, thereby increasing the cost and manufacturing unit price, and causing various problems such as material management and increased side operations.

[0012] Furthermore, in the existing technology, there are accident problems in the manufacturing process of unit guide rails.

[0013] According to disaster data from the Korea Industrial Safety and Health Federation in industries such as shipbuilding and manufacturing, the number of worker injuries is increasing every year. To ensure the safety of workers in these industries, it is necessary to safeguard workers during the operation of machinery in manufacturing processes.

[0014] As an example, on Monday, February 27, 2023, at approximately 9:30 AM, at a heavy industrial factory in Sinan County, Jeollanam-do, during the installation of steel structures (unit guide rails) under ship unit blocks, a victim was crushed and killed by a unit guide rail that collapsed after a temporary weld broke. Figure 9 As shown.

[0015] Therefore, the applicant seeks to propose a technique that can automatically perform welding of unit guide rails.

[0016] As a related technology, Patent Publication No. 10-2013-0109818 describes an automatic welding device for container ship unit rails.

[0017] The above-mentioned technology relates to an automatic welding device for unit rails of container ships. Its purpose is to provide an automatic welding device having the following structure: when welding unit rails that guide containers and are installed on the transverse bulkhead of a container ship, the device can automatically weld the rail brackets between the transverse bulkhead and the unit rails in a narrow space without creating a non-welding work area. The invention relates to an automatic welding device for unit rails of container ships, comprising: a main body 1 with an opening, and rotary length guides 11 for guiding welding distance formed on both sides of one side, and a plurality of magnet devices 12 on the bottom surface for attaching to the transverse bulkhead or unit rail of the container ship; an X-direction slider 2, a Y-direction slider 3, and a Z-direction slider 4, disposed on the main body, for moving the welding gun in the X (left-right), Y (front-back), and Z (up-down) directions of the main body, wherein the welding gun is used for welding between the transverse bulkhead and the unit rail bracket behind the unit rail; a drive unit 5, disposed on one side of the main body, including hinges 51 disposed on both sides of the X-direction slider and a motor 52 and a reducer 53 for transmitting driving force to the hinges to move them; and a welding gun clamp 6, disposed on the Z-direction slider, for fixing the inserted welding gun 7 and adjusting its angle.

[0018] The automatic welding device for container ship unit rails based on the above technology adopts the method of welding by pasting onto the unit rails.

[0019] Prior technology literature

[0020] [Patent Documents]

[0021] (Patent Document 0001) Patent Publication No. 10-2013-0109818

[0022] (Patent Document 0002) Registered Patent Publication No. 10-1336176

[0023] (Patent Document 0003) Patent Publication No. 10-2022-0085686

[0024] (Patent Document 0004) Patent Publication No. 10-2023-0032753 Summary of the Invention

[0025] [The technical challenges to be addressed]

[0026] The purpose of this invention is to address the problem in the prior art that, when welding unit guide rails used on container ship unit blocks, L-shaped steel is cut to specified specifications before welding, and a crane is used to rotate the direction during the welding process. This invention provides an automated welding system that utilizes a unit guide rail rotating fixture and a welding robot. The system develops automated equipment to automatically rotate the direction, while the welding robot automatically performs the welding.

[0027] [Solution to the Problem]

[0028] To achieve the above objectives, the present invention provides an automated welding system utilizing a unit guide rail rotary fixture and a welding robot, characterized in that it comprises: a rotary fixture 20 extending along a length direction; and a welding robot 10 configured to move along a track on one side of the rotary fixture 20, the welding robot 10 comprising: a track 11 arranged along a length direction; one or more guide rails 12 attached to the upper side of the track 11; and a plate portion 13 supported by the guide rails 12, wherein the welding robot 10 is attached to the plate portion 13 to form the automated welding system.

[0029] At this time, the rotating clamp 20 is characterized in that: the base 21 is made of plate; and one or more clamp bodies 22 on the upper side of the base 21, the clamp bodies 22 being supported by brackets 222.

[0030] Furthermore, the fixture body 22 is characterized by having a three-tiered structure: a low body 2211 with the lowest height at the foremost stage; a high body 2212 with the highest height located behind the low body 2211; and a medium-height body 2213 with a medium height located behind the high body 2212. The step difference between the low body 2211 and the high body 2212 on the fixture body 22 facilitates the installation of the "L"-shaped unit guide rail.

[0031] Furthermore, the feature is that a fixing part 223 is provided on one side of the above-mentioned medium-height main body 2213. The fixing part 223 is connected by a hinge and rotates around the hinge axis. The fixing part 223 presses and fixes the unit guide rail installed on the clamp body 22 from the top.

[0032] Furthermore, it is characterized in that a groove is formed on one side of the aforementioned high body 2212, and an adjustment part 22121 is included in the groove. The adjustment part 22121 is composed of a cylinder and is raised or lowered. The adjustment part 22121 pushes one side of the installed unit guide rail to rotate the unit guide rail.

[0033] [Invention Effects]

[0034] The automatic welding system of the present invention, which utilizes a unit guide rail rotating fixture and a welding robot, addresses the inconvenience of using a crane in the prior art for welding L-shaped steel after cutting it to a specified size, which requires rotation during the welding process. The system utilizes automated equipment for rotation, and the welding robot automatically performs welding as it moves along the guide rail, thereby overcoming the aforementioned inconvenience of the prior art. Attached Figure Description

[0035] Figure 1 The present invention illustrates an automated welding system utilizing a unit guide rail rotary fixture and a welding robot.

[0036] Figure 2 The present invention illustrates an automated welding system utilizing a unit guide rail rotary fixture and a welding robot, comprising a welding robot and a welding robot.

[0037] Figure 3 Specifically, the rotary fixture of the present invention is shown as an automatic welding system utilizing a unit guide rail rotary fixture and a welding robot.

[0038] Figure 4 This invention illustrates an example of an automated welding system utilizing a unit guide rail rotary fixture and a welding robot, where the welding robot moves along the guide rail.

[0039] Figure 5 Another example of the rotary fixture of the present invention, which utilizes a unit guide rail rotary fixture and a welding robot in an automated welding system, is shown.

[0040] Figure 6 This is a photograph showing the configuration of the lower loading unit guide rail in the prior art.

[0041] Figure 7 This is a photograph illustrating the manufacturing process of a unit guide rail in the prior art.

[0042] Figure 8 This is a schematic diagram showing the configuration specifications of the end components in an existing unit guide rail.

[0043] Figure 9 This is a schematic diagram illustrating the technical problems that arise during the implementation of existing technology.

[0044] Explanation of reference numerals in the attached figures:

[0045] 1: Equipment; 10: Welding robot; 11: Track; 12: Guide rail; 13: Plate; 20: Rotary clamp; 21: Base; 22: Clamp body; 221: Body; 2211: Low body; 2212: High body; 22121: Adjustment part; 2213: Medium height body; 222: Bracket; 223: Fixing part. Detailed Implementation

[0046] The terms or words used in this specification and the scope of the claim should not be interpreted in a limited way according to their usual or dictionary meanings. Based on the inventor's principle of properly defining terms and concepts in order to best illustrate their invention, they should be interpreted as meanings and concepts consistent with the technical ideas of the invention.

[0047] Therefore, the embodiments described in this specification and the structures shown in the figures are merely the most preferred embodiments of the present invention, and do not represent all the technical ideas of the present invention. Therefore, it should be understood that at the time of filing of this application, there may be various equivalents and modifications that can replace these embodiments and the structures shown in the figures.

[0048] Before proceeding with the following description with reference to the accompanying drawings, it should be noted that well-known structures that are not essential to demonstrating the spirit of the invention, i.e., those that can be obviously added by a person skilled in the art with conventional knowledge, are not illustrated or described in detail.

[0049] This invention relates to an automated welding system utilizing a unit guide rail rotary fixture and a welding robot.

[0050] Specifically, in the prior art, when welding unit guide rails used on container ship unit blocks, L-shaped steel is cut to specified specifications before welding. However, a crane is used to rotate the direction during the welding process. The present invention relates to an automated welding system that utilizes a unit guide rail rotating fixture and a welding robot to develop automated equipment to automatically rotate the direction, while the welding robot automatically performs the welding.

[0051] The automatic welding system of the present invention, which utilizes a unit guide rail rotary fixture and a welding robot, will now be described with reference to the accompanying drawings.

[0052] first, Figure 1 This invention illustrates an automated welding system utilizing a unit guide rail rotary fixture and a welding robot. Figure 2 The present invention illustrates an automated welding system utilizing a unit guide rail rotary fixture and a welding robot, comprising a welding robot and a welding robot.

[0053] That is, such as Figure 1 As shown, the automatic welding system of the present invention, which utilizes a unit guide rail rotary fixture and a welding robot as the specified device 1, allows the rotary fixture 20 to extend along the length direction to support the unit guide rail.

[0054] In addition, one or more welding robots 10 are provided on one side of the aforementioned rotating fixture 20, and the welding robots 10 move along the track to perform welding at a specified position.

[0055] like Figure 4 As shown, in the welding robot 10 described above, a predetermined track 11 is set along the length direction, and a guide rail 12 is attached to the upper side of the track 11, so that the guide rail 12 moves along the track 11. At this time, the guide rail 12 can be a conventional component such as an LM guide rail (linear motion guide rail).

[0056] Figure 4This invention illustrates an example of an automated welding system utilizing a unit guide rail rotary fixture and a welding robot, where the welding robot moves along the guide rail.

[0057] In addition, one or more of the aforementioned guide rails 12 are provided, a plate portion 13 is provided on the upper side of the guide rails 12, and a welding robot 10 is provided on the upper side of the plate portion 13.

[0058] At this time, in order to stably support the welding robot 10, two or more tracks 11 can also be used.

[0059] Furthermore, regarding the aforementioned rotating clamp 20, refer to... Figure 3 .

[0060] Figure 3 Specifically, the rotary fixture of the present invention is shown as an automatic welding system utilizing a unit guide rail rotary fixture and a welding robot.

[0061] Figure 3 The rotary clamp 20 shown has one or more clamp bodies 22 on the upper side of a base 21 made of sheet metal. At this time, each clamp body 22 supports the load of the unit guide rail using a separate bracket 222.

[0062] like Figure 3 As shown, the clamp body 22 is configured with a three-level structure: a low body 2211 with the lowest height at the foremost level; a high body 2212 with the highest height located behind the low body 2211; and a medium-height body 2213 with a medium height located behind the high body 2212.

[0063] At this time, a fixing part 223 is provided on one side of the above-mentioned medium-height main body 2213. The fixing part 223 is connected by a hinge and rotates around the hinge axis.

[0064] The aforementioned fixing part 223 includes a downwardly projecting pointed structure at one end, which rotates to form a horizontal position with the clamp body 22 to serve as a fixing unit guide rail.

[0065] Furthermore, the step difference between the lower body 2211 and the higher body 2212 on the fixture body 22 makes it easy to install the unit guide rail with an "L" shape.

[0066] At this point, as previously shown, a rotation process is required for welding the unit guide rail. Therefore, an adjustment section 22121 is included on one side of the high body 2212. This adjustment section 22121 is constructed of a cylinder and is raised or lowered. The adjustment section 22121 pushes one side of the mounted unit guide rail to rotate it. Specifically, a downwardly recessed groove is formed in the high body 2212, and the cylinder is disposed within this groove.

[0067] At this time, the piston rod of the cylinder of the adjusting unit 22121 rises or falls to push the unit guide rail.

[0068] Furthermore, when there are multiple clamp bodies 22 as mentioned above, the control is uniformly performed to easily push the unit guide rail with load.

[0069] Furthermore, as a structure for rotating the aforementioned fixed part 223, although not shown, it can be based on a gear connection using a motor to engage with the hinge side, which becomes the shaft. Alternatively, a cylinder can be provided on one side of the fixed part 223, and a thread or gear can be formed on the cylinder piston rod. The hinge side can be extended and engaged with the cylinder piston rod. By engaging the thread or gear, the hinge can be rotated by the upward or downward operation of the cylinder, and the fixed part 223, which is integral with the hinge, can be rotated at the same time.

[0070] Alternatively, instead of forming the hinge and the fixing part 223 as a single structure, a cylinder is formed at one end of the fixing part 223. After the cylinder piston rod is attached to the end of the fixing part 223, the fixing part 223 is rotated by the rising or falling of the cylinder piston rod.

[0071] At this point, in order to push the unit guide rail to rotate in the state of being installed on the fixture body 22, the lower body 2211 also needs to be able to grip the unit guide rail in the opposite direction. Therefore, the fixture body 22 is designed to have... Figure 5 The structure.

[0072] Figure 5 Another example of the rotary fixture of the present invention, which utilizes a unit guide rail rotary fixture and a welding robot in an automated welding system, is shown.

[0073] according to Figure 5 On one side of the lower body 2211, a first auxiliary body 1 is connected by a hinge. The first auxiliary body 1 can rotate around the hinge axis. A groove is formed on the first auxiliary body 1 from the uppermost part to the lower part, so that the two plates face each other.

[0074] At this time, through the groove of the first auxiliary body 1, holes of a specified length are formed on each of the two plates.

[0075] Through these holes, the second hinge 3 is used to connect the second auxiliary body 2, which has an end bent into an "L" shape.

[0076] Furthermore, the end of the spring 4 is embedded in the second hinge 3, and the other end of the spring 4 is configured to be fixedly connected to the other end of the hole by bolts.

[0077] With this structure, the second auxiliary body 2 is movable because the spring 4 has a specified elasticity and downward flexibility, and the second hinge 3 is movable.

[0078] Furthermore, the second auxiliary body 2 can be configured to close the top surface of the first auxiliary body 1 so that it can rotate no more than 90 degrees relative to the first auxiliary body 1.

[0079] The rotation of the first auxiliary body 1 can also be controlled to be the same as the rotation of the fixing part 223. When the fixing part 223 presses the fixing unit guide rail from the top, the first auxiliary body 1 rotates and presses the upper surface of the fixing part 223 through the second auxiliary body 2 to achieve double fixing.

[0080] At this time, when the unit guide rail is rotated under the control of the adjustment part 22121, the second auxiliary body 2 is slightly flexible and can be pressed to be stably fixed.

[0081] The automatic welding system of the present invention, which utilizes a unit guide rail rotating fixture and a welding robot as described above, addresses the inconvenience of using a crane in the prior art for welding L-shaped steel after cutting it to a specified size, which requires rotation during the welding process. By using automated equipment for rotation and having the welding robot automatically weld along the guide rail, the system overcomes the inconvenience of the prior art.

[0082] The foregoing description with reference to the accompanying drawings is merely a summary of the main aspects of this invention. Within the technical scope of this invention, various designs are of course possible, and this invention is obviously not limited to the structures shown in the accompanying drawings.

Claims

1. An automatic welding system using a unit guide rail rotary jig and a welding robot, characterized by comprising: a rotary jig (20) elongated in a length direction; and a welding robot (10) configured to move along a rail on one side of the rotary jig (20), the welding robot (10) comprising: a rail (11) provided in a length direction; one or more guide rails (12) coupled to an upper side of the rail (11); and a plate portion (13) supported by the guide rail (12), the automatic welding system being configured by coupling the welding robot (10) to the plate portion (13).

2. The automatic welding system using a unit guide rail rotary jig and a welding robot according to claim 1, characterized in that the rotary jig (20) comprises: a base (21) composed of a plate material; and one or more jig bodies (22) on an upper side of the base (21), the jig body (22) being supported by a bracket (222).

3. The automatic welding system using a unit guide rail rotary jig and a welding robot according to claim 2, characterized in that the jig body (22) is configured to have a three-stage structure having, in a frontmost stage, a low body (2211) having a lowest height, a high body (2212) having a highest height located behind the low body (2211), and a middle-height body (2213) having a middle height located behind the high body (2212), a step difference between the low body (2211) and the high body (2212) on the jig body (22) making it easy to install a unit guide rail having an "L" shape.

4. The automatic welding system using a unit guide rail rotary jig and a welding robot according to claim 3, characterized in that a fixed portion (223) is provided on one side of the middle-height body (2213), the fixed portion (223) being coupled by a hinge and rotating on the hinge as an axis, the fixed portion (223) pressing and fixing a unit guide rail installed on the jig body (22) from an upper portion.

5. The automatic welding system using a unit guide rail rotary jig and a welding robot according to claim 3, characterized in that a groove is formed on one side of the high body (2212), the groove including an adjustment portion (22121) composed of a cylinder and ascending or descending, the adjustment portion (22121) pushing one side of an installed unit guide rail to rotate the unit guide rail. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

Images