阅读说明：本技术 一种可移动式厚板的自动焊接系统 (Automatic welding system of movable thick plate ) 是由 黄亮 于 2020-06-08 设计创作，主要内容包括：本发明提出了一种可移动式厚板的自动焊接系统,包括底座、a板、b板、a板固定机构、b板固定机构、焊接机构和喷气机构；底座上固定有沿其长度方向延伸的固定板,固定板上滑动安装有第一滑块并安装有用于驱动第一滑块沿固定板长度方向来回移动的第一驱动件；a板固定机构、b板固定机构相对安装在底座上并分别位于固定板长度方向两侧,a板固定机构、b板固定机构分别用于固定a板、b板；焊接机构位于固定板上方并安装在b板固定机构上,并且焊接机构可沿着固定板长度方向移动；喷气机构安装在第一滑块上并可随着第一滑块的移动而移动。本发明实现对厚板的自动化焊接加工,有效提高工作效率和焊接质量。(The invention provides an automatic welding system of a movable thick plate, which comprises a base, a plate a, a plate b, a plate a fixing mechanism, a plate b fixing mechanism, a welding mechanism and an air injection mechanism, wherein the plate a is fixed on the base; a fixed plate extending along the length direction of the fixed plate is fixed on the base, a first sliding block is slidably mounted on the fixed plate, and a first driving piece for driving the first sliding block to move back and forth along the length direction of the fixed plate is mounted on the fixed plate; the plate a fixing mechanism and the plate b fixing mechanism are oppositely arranged on the base and are respectively positioned on two sides of the fixed plate in the length direction, and the plate a fixing mechanism and the plate b fixing mechanism are respectively used for fixing the plate a and the plate b; the welding mechanism is positioned above the fixed plate and is arranged on the b plate fixing mechanism, and the welding mechanism can move along the length direction of the fixed plate; the air injection mechanism is arranged on the first sliding block and can move along with the movement of the first sliding block. The invention realizes the automatic welding processing of the thick plate and effectively improves the working efficiency and the welding quality.)

1. The automatic welding system of the movable thick plate is characterized by comprising a base (1), a plate a, a plate b, a plate a fixing mechanism, a plate b fixing mechanism, a welding mechanism and an air injection mechanism (35);

a fixed plate (2) extending along the length direction of the base is fixed on the base (1), a first sliding block (3) is installed on the fixed plate (2) in a sliding mode, and a first driving piece used for driving the first sliding block (3) to move back and forth along the length direction of the fixed plate (2) is installed on the fixed plate (2);

the plate a fixing mechanism and the plate b fixing mechanism are oppositely arranged on the base (1) and are respectively positioned on two sides of the fixing plate (2) in the length direction, and the plate a fixing mechanism and the plate b fixing mechanism are respectively used for fixing a plate a and a plate b;

the welding mechanism is positioned above the fixed plate (2) and is arranged on the b plate fixing mechanism, and the welding mechanism can move along the length direction of the fixed plate (2);

the air injection mechanism (35) is arranged on the first sliding block (3) and can move along with the movement of the first sliding block (3).

2. The automatic welding system of movable thick plate according to claim 1, characterized in that the first driving member comprises a first driving motor and a first lead screw (4), the fixing plate (2) is provided with a first sliding groove (5) extending along the length direction of the fixing plate, the first lead screw (4) is arranged in the first sliding groove (5) and the length direction of the first lead screw is consistent with the length direction of the fixing plate (2), the first lead screw (4) is rotatably connected with the fixing plate (2) and is driven by the first driving motor to rotate, and the first sliding block (3) is slidably mounted in the first sliding groove (5) and is connected with the first lead screw (4) in a threaded fit manner.

3. The automatic welding system of movable thick plates according to claim 1, characterized in that the a-plate fixing mechanism comprises a first fixing seat (6), a first upper clamping plate (7), a first lower clamping plate (8), a first adjusting screw (9) and a second adjusting screw (10); the first fixing seat (6) is installed on the base (1), the distance between the first fixing seat (6) and the fixing plate (2) is adjustable, the first upper clamping plate (7) and the first lower clamping plate (8) are horizontally arranged up and down, the first upper clamping plate (7) and the first lower clamping plate (8) are installed on the first fixing seat (6) in a sliding mode, and a clamping channel for fixing the plate a is formed between the first upper clamping plate (7) and the first lower clamping plate (8); a first limiting plate (11) is fixed on the first fixing seat (6), and the first limiting plate (11) is positioned below the first lower clamping plate (8) and is parallel to the first lower clamping plate (8); the first adjusting screw (9) is vertically arranged, the bottom end of the first adjusting screw passes through the first upper clamping plate (7) to be rotatably connected with the first fixing seat (6), and the first adjusting screw (9) is in threaded fit connection with the first upper clamping plate (7); the second adjusting screw (10) is vertically arranged, the top end of the second adjusting screw passes through the first limiting plate (11) to be rotatably connected with the first lower clamping plate (8), and the second adjusting screw (10) is in threaded fit connection with the first limiting plate (11).

4. The automatic welding system of the movable thick plate according to claim 3, characterized in that a first spring (12) is sleeved outside a section of the first adjusting screw (9) between the first fixing seat (6) and the first upper clamping plate (7), and two ends of the first spring (12) are respectively connected with the first fixing seat (6) and the first upper clamping plate (7); a second spring (13) is sleeved outside a section, which is located between the first limiting plate (11) and the first lower clamping plate (8), of the second adjusting screw (10), and two ends of the second spring (13) are connected with the first limiting plate (11) and the first lower clamping plate (8) respectively.

5. The automatic welding system of movable thick plates according to any of claims 1-4, characterized in that the b plate fixing mechanism comprises a second fixing seat (14), a second upper clamping plate (15), a second lower clamping plate (16), a third adjusting screw (17) and a fourth adjusting screw (18); the second fixing seat (14) is installed on the base (1), the distance between the second fixing seat (14) and the fixing plate (2) is adjustable, the second upper clamping plate (15) and the second lower clamping plate (16) are horizontally arranged up and down, the second upper clamping plate (15) and the second lower clamping plate (16) are installed on the second fixing seat (14) in a sliding mode, and a clamping channel for fixing the b plate is formed between the second upper clamping plate (15) and the second lower clamping plate (16); a second limiting plate (19) is fixed on the second fixing seat (14), and the second limiting plate (19) is positioned below the second lower clamping plate (16) and is parallel to the second lower clamping plate (16); the third adjusting screw (17) is vertically arranged, the bottom end of the third adjusting screw passes through the second upper clamping plate (15) to be rotatably connected with the second fixed seat (14), and the third adjusting screw (17) is in threaded fit connection with the second upper clamping plate (15); the fourth adjusting screw (18) is vertically arranged, the top end of the fourth adjusting screw passes through a second limiting plate (19) to be rotatably connected with the second lower clamping plate (16), and the fourth adjusting screw (18) is in threaded fit connection with the second limiting plate (19).

6. The automatic welding system of the movable thick plate according to claim 5, characterized in that a third spring (20) is sleeved outside a section of the third adjusting screw (17) between the second fixing seat (14) and the second upper clamping plate (15), and two ends of the second spring (13) are respectively connected with the second fixing seat (14) and the second upper clamping plate (15); a fourth spring (21) is sleeved outside a section of the fourth adjusting screw (18) located between the second limiting plate (19) and the second lower clamping plate (16), and two ends of the fourth spring (21) are respectively connected with the second limiting plate (19) and the second lower clamping plate (16).

7. The automatic welding system of movable thick plates according to any one of claims 1-4, characterized in that the welding mechanism comprises a welding mounting plate (22), a second slider (23), a laser generator, a laser welding head (24), a shielding gas nozzle (25), a second driving member and a third driving member; the second driving part comprises a rotating shaft (26) and a second driving motor, the rotating shaft (26) is rotatably installed at the top end of the second fixed seat (14), a first thread section (27) and a second thread section (28) which are opposite in thread direction are arranged on the rotating shaft (26), and a third sliding block (29) and a fourth sliding block (30) which are in sliding connection with the second fixed seat (14) are respectively in threaded connection with the first thread section (27) and the second thread section (28); the welding mounting plate (22) is parallel to the fixing plate (2), the welding mounting plate (22) is hinged with a first connecting rod (31) and a second connecting rod (32), and the other ends of the first connecting rod (31) and the second connecting rod (32) are hinged with a third sliding block (29) and a fourth sliding block (30) respectively; one side, away from the second fixed seat (14), of the welding mounting plate (22) is provided with a second sliding groove (33) extending along the length direction of the welding mounting plate, and the second sliding block (23) is connected with the second sliding groove (33) in a sliding fit manner; the third driving piece comprises a second lead screw (34) and a third driving motor, the second lead screw (34) is arranged in the second sliding groove (33) and is in threaded fit connection with the second sliding block (23), and the second lead screw (34) is driven to rotate by the third driving motor; the laser welding head (24) and the protective gas nozzle (25) are both arranged on the laser welding head (24), and the laser welding head (24) is connected with the laser generator.

Technical Field

The invention relates to the technical field of welding, in particular to an automatic welding system for a movable thick plate.

Background

The laser tailor-welded blank technology is a modern automobile plate processing technology developed based on a mature laser welding technology and occupies an important position in commercial production of tailor-welded blanks. Tailor welded blanks are formed by tailor welding two or more sheets of different thicknesses, different materials, or different surface coatings together prior to forming. The application of the tailor-welded blank technology provides opportunities for reducing the weight of the car body, reducing the production cost, strengthening the local corrosion resistance of car body parts and improving the safety of the car body. At present, the automation degree in domestic thick plate welding is low, most welding works are completed by manual welding, and the phenomena of insufficient quality stability, insufficient productivity and the like are caused.

Disclosure of Invention

Based on the technical problems in the background art, the invention provides an automatic welding system of a movable thick plate.

The invention provides an automatic welding system of a movable thick plate, which comprises a base, a plate a, a plate b, a plate a fixing mechanism, a plate b fixing mechanism, a welding mechanism and an air injection mechanism, wherein the plate a is fixed on the base;

a fixed plate extending along the length direction of the fixed plate is fixed on the base, a first sliding block is slidably mounted on the fixed plate, and a first driving piece for driving the first sliding block to move back and forth along the length direction of the fixed plate is mounted on the fixed plate;

the plate a fixing mechanism and the plate b fixing mechanism are oppositely arranged on the base and are respectively positioned on two sides of the fixed plate in the length direction, and the plate a fixing mechanism and the plate b fixing mechanism are respectively used for fixing the plate a and the plate b;

the welding mechanism is positioned above the fixed plate and is arranged on the b plate fixing mechanism, and the welding mechanism can move along the length direction of the fixed plate;

the air injection mechanism is arranged on the first sliding block and can move along with the movement of the first sliding block.

Preferably, the first driving part comprises a first driving motor and a first lead screw, the fixing plate is provided with a first chute extending along the length direction of the fixing plate, the first lead screw is arranged in the first chute, the length direction of the first lead screw is consistent with the length direction of the fixing plate, the first lead screw is rotatably connected with the fixing plate and is driven by the first driving motor to rotate, and the first sliding block is slidably installed in the first chute and is in threaded fit connection with the first lead screw.

Preferably, the a plate fixing mechanism comprises a first fixing seat, a first upper clamping plate, a first lower clamping plate, a first adjusting screw and a second adjusting screw; the first fixing seat is mounted on the base, the distance between the first fixing seat and the fixing plate is adjustable, the first upper clamp plate and the first lower clamp plate are horizontally arranged up and down, the first upper clamp plate and the first lower clamp plate are mounted on the first fixing seat in a sliding mode, and a clamping channel for fixing the a plate is formed between the first upper clamp plate and the first lower clamp plate; a first limiting plate is fixed on the first fixing seat, and the first limiting plate is positioned below the first lower clamping plate and is parallel to the first lower clamping plate; the first adjusting screw rod is vertically arranged, the bottom end of the first adjusting screw rod penetrates through the first upper clamping plate to be rotatably connected with the first fixing seat, and the first adjusting screw rod is in threaded fit connection with the first upper clamping plate; the second adjusting screw rod is vertically arranged, the top end of the second adjusting screw rod penetrates through the first limiting plate to be rotatably connected with the first lower clamping plate, and the second adjusting screw rod is in threaded fit connection with the first limiting plate.

Preferably, a first spring is sleeved outside a section of the first adjusting screw rod, which is located between the first fixed seat and the first upper clamping plate, and two ends of the first spring are respectively connected with the first fixed seat and the first upper clamping plate; the second adjusting screw is located between the first limiting plate and the first lower clamping plate, a second spring is sleeved outside one section of the second adjusting screw, and two ends of the second spring are connected with the first limiting plate and the first lower clamping plate respectively.

Preferably, the b plate fixing mechanism comprises a second fixing seat, a second upper clamping plate, a second lower clamping plate, a third adjusting screw and a fourth adjusting screw; the second fixing seat is arranged on the base, the distance between the second fixing seat and the fixing plate is adjustable, the second upper clamping plate and the second lower clamping plate are horizontally arranged up and down, the second upper clamping plate and the second lower clamping plate are both arranged on the second fixing seat in a sliding mode, and a clamping channel for fixing the b plate is formed between the second upper clamping plate and the second lower clamping plate; a second limiting plate is fixed on the second fixing seat, is positioned below the second lower clamping plate and is parallel to the second lower clamping plate; the third adjusting screw rod is vertically arranged, the bottom end of the third adjusting screw rod penetrates through the second upper clamping plate to be rotatably connected with the second fixing seat, and the third adjusting screw rod is in threaded fit connection with the second upper clamping plate; the fourth adjusting screw is vertically arranged, the top end of the fourth adjusting screw penetrates through the second limiting plate to be rotatably connected with the second lower clamping plate, and the fourth adjusting screw is in threaded fit connection with the second limiting plate.

Preferably, a third spring is sleeved outside a section of the third adjusting screw rod, which is located between the second fixing seat and the second upper clamping plate, and two ends of the second spring are respectively connected with the second fixing seat and the second upper clamping plate; a fourth spring is sleeved outside one section of the fourth adjusting screw rod, which is located between the second limiting plate and the second lower clamping plate, and two ends of the fourth spring are respectively connected with the second limiting plate and the second lower clamping plate.

Preferably, the welding mechanism comprises a welding mounting plate, a second sliding block, a laser generator, a laser welding head, a shielding gas nozzle, a second driving piece and a third driving piece; the second driving piece comprises a rotating shaft and a second driving motor, the rotating shaft is rotatably installed at the top end of the second fixed seat, a first thread section and a second thread section which are opposite in thread direction are arranged on the rotating shaft, and a third sliding block and a fourth sliding block which are connected with the second fixed seat in a sliding mode are respectively in threaded connection with the first thread section and the second thread section; the welding mounting plate is parallel to the fixed plate, the welding mounting plate is hinged with a first connecting rod and a second connecting rod, and the other ends of the first connecting rod and the second connecting rod are respectively hinged with a third sliding block and a fourth sliding block; one side of the welding mounting plate, which is far away from the second fixed seat, is provided with a second sliding groove extending along the length direction of the second fixed seat, and the second sliding block is connected with the second sliding groove in a sliding fit manner; the third driving piece comprises a second lead screw and a third driving motor, the second lead screw is arranged in the second sliding chute and is in threaded fit connection with the second sliding block, and the second lead screw is driven to rotate by the third driving motor; the laser welding head and the protective gas nozzle are both arranged on the laser welding head, and the laser welding head is connected with the laser generator.

The invention provides an automatic welding system of a movable thick plate, wherein an a plate fixing mechanism and a b plate fixing mechanism respectively fix a plate a and a plate b and enable the plate a and the plate b to be butted and abutted, and a welding mechanism works and moves along the length direction of a fixing plate to carry out laser welding on the butted part of the plate a and the plate b; the gas injection mechanism is used for injecting inert gas to the butt joint of the plate a and the plate b, meanwhile, the first driving motor drives the first lead screw to rotate, and the first lead screw drives the first sliding block to move so as to drive the gas injection mechanism to move. The invention realizes the automatic welding processing of the thick plate and effectively improves the working efficiency and the welding quality.

Drawings

FIG. 1 is a schematic structural diagram of an automatic welding system for a movable thick plate according to the present invention;

fig. 2 is a schematic view of a connection structure between a welding installation plate and a second fixing seat in the automatic welding system for a movable thick plate according to the present invention.

Detailed Description

Referring to fig. 1 and 2, the invention provides an automatic welding system for a movable thick plate, which comprises a base 1, a plate a, a plate b, a plate a fixing mechanism, a plate b fixing mechanism, a welding mechanism and an air injection mechanism; wherein:

the base 1 is fixed with a fixed plate 2 extending along the length direction of the fixed plate, and the fixed plate 2 is provided with a first sliding block 3 in a sliding manner and a first driving piece for driving the first sliding block 3 to move back and forth along the length direction of the fixed plate 2.

First driving piece includes first driving motor and first lead screw 4, and fixed plate 2 is seted up along the first spout 5 that its length direction extends, and first lead screw 4 sets up in first spout 5 and its length direction is unanimous with fixed plate 2 length direction, and first lead screw 4 rotates with fixed plate 2 and is connected and rotate by the driving of first driving motor, and 3 slidable mounting of first slider are in first spout 5 and are connected with 4 screw-thread fit of first lead screw.

The plate a fixing mechanism and the plate b fixing mechanism are oppositely arranged on the base 1 and are respectively positioned on two sides of the fixing plate 2 in the length direction, and the plate a fixing mechanism and the plate b fixing mechanism are respectively used for fixing the plate a and the plate b.

The welding mechanism is positioned above the fixed plate 2 and is arranged on the b-plate fixing mechanism, and the welding mechanism can move along the length direction of the fixed plate 2.

The air injection mechanism is mounted on the first slider 3 and can move along with the movement of the first slider 3.

In the invention, the plate a fixing mechanism and the plate b fixing mechanism respectively fix the plate a and the plate b and enable the plate a and the plate b to be butted and abutted, and the welding mechanism works and moves along the length direction of the fixing plate to carry out laser welding on the butted part of the plate a and the plate b; the gas injection mechanism is used for injecting inert gas to the butt joint of the plate a and the plate b to enable the profile of the bottom welding pool to generate controllable deformation, dynamic balance of surface tension of the bottom welding pool and gravity of molten metal is achieved, real-time prevention and control of liquid drops at a hump at the bottom are achieved, meanwhile, the first driving motor drives the first lead screw to rotate, and the first lead screw drives the first sliding block to move so as to drive the gas injection mechanism to move.

In a specific embodiment, the a-plate fixing mechanism comprises a first fixing seat 6, a first upper clamping plate 7, a first lower clamping plate 8, a first adjusting screw 9 and a second adjusting screw 10. First fixing base 6 is installed on base 1 and the distance between first fixing base 6 and fixed plate 2 is adjustable, and first punch holder 7, first lower plate 8 are horizontal arrangement from top to bottom and first punch holder 7, the equal slidable mounting of first lower plate 8 are on first fixing base 6, form the centre gripping passageway that is used for fixed a board between first punch holder 7 and the first lower plate 8. A first limiting plate 11 is fixed on the first fixing seat 6, and the first limiting plate 11 is positioned below the first lower clamping plate 8 and is parallel to the first lower clamping plate 8; first adjusting screw 9 is vertically arranged and the bottom end thereof passes through first punch holder 7 to be connected with first fixing base 6 in a rotating manner, and first adjusting screw 9 is connected with first punch holder 7 in a threaded fit manner, first adjusting screw 9 is located between first fixing base 6 and first punch holder 7, and a first spring 12 is sleeved on one section of the outside of first adjusting screw 9, and two ends of first spring 12 are respectively connected with first fixing base 6 and first punch holder 7. The second adjusting screw 10 is vertically arranged, the top end of the second adjusting screw passes through the first limiting plate 11 and is rotatably connected with the first lower clamping plate 8, the second adjusting screw 10 is in threaded fit connection with the first limiting plate 11, the second adjusting screw 10 is located between the first limiting plate 11 and the first lower clamping plate 8, a second spring 13 is sleeved outside one section of the second adjusting screw, and two ends of the second spring 13 are respectively connected with the first limiting plate 11 and the first lower clamping plate 8. When the a plate is fixed, the a plate is placed between the first upper clamping plate 7 and the first lower clamping plate 8, and the first adjusting screw 9 and the second adjusting screw 10 are rotated to respectively drive the first upper clamping plate 7 and the first lower clamping plate 8 to move towards the a plate direction so as to clamp the a plate; the clamping of the a plate can be ensured by arranging the first spring 12 and the second spring 13 on the first adjusting screw 9 and the second adjusting screw 10 respectively. The distance between the first fixing seat 6 and the fixing plate 2 is adjustable to adapt to welding of thick plates with different sizes.

In a specific embodiment, the b-plate fixing mechanism includes a second fixing seat 14, a second upper clamping plate 15, a second lower clamping plate 16, a third adjusting screw 17 and a fourth adjusting screw 18. The second fixing seat 14 is mounted on the base 1, the distance between the second fixing seat 14 and the fixing plate 2 is adjustable, the second upper clamping plate 15 and the second lower clamping plate 16 are horizontally arranged up and down, the second upper clamping plate 15 and the second lower clamping plate 16 are both slidably mounted on the second fixing seat 14, and a clamping channel for fixing the b plate is formed between the second upper clamping plate 15 and the second lower clamping plate 16; a second limiting plate 19 is fixed on the second fixing seat 14, and the second limiting plate 19 is positioned below the second lower clamping plate 16 and is parallel to the second lower clamping plate 16; third adjusting screw 17 is vertical to be arranged and its bottom passes second punch holder 15 and is connected with second fixing base 14 rotation to third adjusting screw 17 is connected with 15 screw-thread fit of second punch holder, and third adjusting screw 17 is located one section outside cover between second fixing base 14 and the second punch holder 15 and has third spring 20, and second spring 13 both ends are connected with second fixing base 14, second punch holder 15 respectively. The fourth adjusting screw 18 is vertically arranged, the top end of the fourth adjusting screw passes through the second limiting plate 19 to be rotatably connected with the second lower clamping plate 16, the fourth adjusting screw 18 is in threaded fit connection with the second limiting plate 19, a fourth spring 21 is sleeved outside a section of the fourth adjusting screw 18 located between the second limiting plate 19 and the second lower clamping plate 16, and two ends of the fourth spring 21 are respectively connected with the second limiting plate 19 and the second lower clamping plate 16. When the b plate is fixed, the b plate is placed between the second upper clamping plate 15 and the second lower clamping plate 16, and the third adjusting screw 17 and the fourth adjusting screw 18 are rotated to respectively drive the second upper clamping plate 15 and the second lower clamping plate 16 to move towards the a plate direction so as to clamp the b plate; the third spring 20 and the fourth spring 21 are respectively arranged on the third adjusting screw 17 and the fourth adjusting screw 18, so that the b plate can be clamped. The distance between the second fixing seat 14 and the fixing plate 2 is adjustable to adapt to welding of thick plates with different sizes.

In a particular embodiment, the welding mechanism includes a weld mounting plate 22, a second slide 23, a laser generator, a laser welding head 24, a shielding gas nozzle 25, a second drive member, and a third drive member; the second driving part comprises a rotating shaft 26 and a second driving motor, the rotating shaft 26 is rotatably installed at the top end of the second fixed seat 14, a first thread section 27 and a second thread section 28 which are opposite in thread direction are arranged on the rotating shaft 26, and a third sliding block 29 and a fourth sliding block 30 which are in sliding connection with the second fixed seat 14 are respectively in thread connection with the first thread section 27 and the second thread section 28; the welding installation plate 22 is parallel to the fixing plate 2, the welding installation plate 22 is hinged with a first connecting rod 31 and a second connecting rod 32, and the other ends of the first connecting rod 31 and the second connecting rod 32 are respectively hinged with a third sliding block 29 and a fourth sliding block 30; one side of the welding installation plate 22, which is far away from the second fixed seat 14, is provided with a second sliding chute 33 which extends along the length direction of the second fixed seat, and the second sliding block 23 is connected with the second sliding chute 33 in a sliding fit manner; the third driving piece comprises a second lead screw 34 and a third driving motor, the second lead screw 34 is arranged in the second sliding chute 33 and is in threaded fit connection with the second sliding block 23, and the second lead screw 34 is driven to rotate by the third driving motor; the laser welding head 24 and the protective gas nozzle 25 are both arranged on the laser welding head 24, and the laser welding head 24 is connected with the laser generator. The third driving motor drives the second lead screw 27 to rotate, the second lead screw 27 drives the third slider 29 and the fourth slider 30 to approach or separate from each other, and when the third slider 29 and the fourth slider 30 move, the welding mounting plate 22 can be driven to move through the first connecting rod 31 and the second connecting rod 32, so that the distance between the welding mounting plate 22 and the second fixing seat 14 is adjusted, the laser welding head 24 is ensured to be aligned to the butt joint position of the plate a and the plate b, and the welding device is suitable for welding thick plates with different sizes.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.