Intelligent welding device for cold-rolled steel plates

Abstract

This invention provides an intelligent welding device for cold-rolled steel plates, relating to the field of welding device technology. It includes: a longitudinal support rod welded inside a first support frame; two L-shaped support plates for bearing and positioning the cold-rolled steel plate to be welded are symmetrically slidably mounted on the longitudinal support rod and the second support frame via spring pushes; an F-shaped sliding member is welded to the bottom of the welding machine, slidingly engaging with the top longitudinal support rod of the first support frame; two F-shaped limiting frames are symmetrically welded to the F-shaped sliding member; four vertical support plates on the two F-shaped limiting frames slide and adhere to the vertical support portions of the L-shaped support plates during welding, thus blocking and limiting the two L-shaped support plates. This invention, as two L-shaped support plates for butt-jointing and positioning cold-rolled steel plates, ensures convenient tightening and loosening while also maintaining good stability of the clamping and fixing, making it more practical than existing technologies.

Description

Technical Field

[0001] The invention relates to the technical field of welding devices, and in particular to an intelligent welding device for cold-rolled steel plates. Background Art

[0002] The cold-rolled steel plate intelligent welding device is a device specially used for cold-rolled steel plate welding. It combines advanced intelligent technology to achieve high-quality and efficient welding processes. It has a wide range of applications in the field of cold-rolled steel plate processing, which can improve production efficiency, reduce costs and ensure welding quality.

[0003] Some of the existing welding devices use threaded sliding clamping to position the two cold-rolled steel plates to be welded, while others use spring-pushing sliding clamping. In order to ensure the clamping stability of a relatively long workpiece, the threaded pushing clamping type positioning mechanism has at least two threaded pushing parts, which results in the need to sequentially screw multiple threaded pushing parts for multiple turns when tightening or loosening the welding material, making the operation and use more troublesome. Although the positioning mechanism using spring-pushing clamping can flexibly and conveniently compress the spring to slide and tighten the clamping part, the spring that outputs the clamping holding force is a flexible part, which cannot rigidly and firmly position the clamping part, resulting in poor positioning stability of the welding material.

[0004] The mechanism for butting and positioning two cold-rolled steel plates to be welded based on the above existing welding devices cannot well take into account both the clamping stability and the convenience of loosening and tightening operations, and is not very practical. Summary of the invention

[0005] In view of this, the present invention provides an intelligent welding device for cold-rolled steel plates to solve the problem that the mechanism for docking and positioning two cold-rolled steel plates to be welded cannot well take into account both the clamping stability and the convenience of loosening and tightening operations, and has poor practicality.

[0006] The technical solution proposed by the present invention is: an intelligent welding device for cold-rolled steel plates, specifically comprising a welding frame and a welding machine; the welding frame as a whole is composed of two symmetrical ground contacting bottom plates at front and rear positions and a first support frame and a second support frame welded to the top ends of the two ground contacting bottom plates at intervals on the left and right sides; the welding machine is slidably mounted on the top longitudinal support rod of the first support frame;

[0007] A longitudinal support mounting rod is welded inside the first support frame, and two L-shaped supporting plates for carrying and positioning the cold-rolled steel plates to be welded are installed on the longitudinal support mounting rod and the second support frame in a left-right symmetrical sliding manner through spring pushing;

[0008] An F-shaped sliding part is welded to the bottom of the welding machine, and the F-shaped sliding part slides with the top longitudinal support rod of the first support frame, and two F-shaped limit frames are symmetrically welded on the F-shaped sliding part. When the four vertical support plates on the two F-shaped limit frames slide back and forth with the welding machine for welding, they slide and fit with the vertical support parts of the L-shaped support plate to block and limit the two L-shaped support plates.

[0009] Furthermore, a driving motor is fixedly mounted at the bottom of the welding machine, and the driving motor is meshed with the top longitudinal support rod of the first support frame through a gear rack mechanism;

[0010] A row of sliding rods are welded to the bottom of the two L-shaped supporting plates, and a U-shaped driving frame is welded to the tail ends of the two rows of sliding rods at the middle positions, and the front and rear ends of the two driving frames are rotatably connected with a connecting rod.

[0011] Furthermore, two transverse brace drive plates are symmetrically and slidably mounted at the front and rear ends of the longitudinal brace mounting rod, and the head ends of the four connecting rods are correspondingly and rotatably connected to the head ends of the two transverse brace drive plates;

[0012] Two positioning shafts with hexagonal cross-sections are symmetrically welded at the bottoms of the front and rear ends of the longitudinal support mounting rod, and the longitudinal support mounting rod is slidably matched with the positioning shafts.

[0013] Furthermore, the tail ends of the two horizontal support driving plates are pushed through and slided by springs to form an upright L-shaped transmission rod, and the top end of the L-shaped transmission rod is in a T-shaped structure.

[0014] Furthermore, after the welding machine slides forward and backward and disengages from the L-shaped support plate, the F-shaped sliding member comes into contact with the two L-shaped transfer rods at the front and rear to push and drive the two L-shaped support plates to slide away from each other to loosen and unload the cold-rolled steel plate after welding.

[0015] Furthermore, the two rows of sliding rods are pushed by springs to slide through and fit with the top longitudinal support rods and the longitudinal support mounting rods of the second support frame.

[0016] Furthermore, the vertical support portion of the L-shaped transmission rod is inserted into the long spacing groove between the driving frame and the longitudinal support mounting rod.

[0017] Furthermore, a limit strip arranged along the length direction of the F-shaped sliding member is welded on the bottom horizontal plate of the F-shaped sliding member, and a long limit slot is opened at the bottom of the longitudinal support rod at the top end of the first support frame, and the limit strip slides in cooperation with the long limit slot.

[0018] Furthermore, the first support frame and the second support frame are both U-shaped structures, and a row of teeth are provided on the top longitudinal support rod of the first support frame on the side facing the L-shaped support plate, and a gear is mounted on the bottom of the driving motor shaft, and the gear meshes with the row of teeth for transmission.

[0019] Furthermore, the welding machine is provided with a controller, and a welding gun capable of sliding up, down, left, and right is installed on the side of the welding machine facing the L-shaped support plate, and the welding gun is located in the middle of the welding machine;

[0020] Two proximity sensors are symmetrically installed at the front and rear ends of the longitudinal support rod at the top end of the first support frame, and the two proximity sensors are electrically connected to a module inside the controller for controlling the motor to stop.

[0021] The cold-rolled steel plate intelligent welding device provided by the present invention has the following beneficial effects:

[0022] When the four vertical support plates on the two F-shaped limit frames of the present invention slide forward and backward with the welding machine for welding, they slide and fit with the vertical support parts of the L-shaped supporting plate. The two F-shaped limit frames can implement sleeve blocking and limiting on the two L-shaped supporting plates through the four vertical support plates thereon during the welding process, so that the two L-shaped supporting plates are stably maintained in the use state of clamping and positioning the two cold-rolled steel plates, avoiding the two L-shaped supporting plates simply relying on the flexible top thrust output by the spring to maintain positioning, which is easy to become loose and cannot be rigidly and firmly clamped and fixed to the two cold-rolled steel plates. The two L-shaped supporting plates can ensure convenient loosening while better taking into account the stability of clamping and fixing, and are more practical than the prior art.

[0023] In addition, through the power transmission of two L-shaped transmission rods and F-shaped sliding parts, when the welding machine is driven to slide forward and backward for welding, it can push the two cross-bracing driving plates to slide forward and backward respectively, control the two L-shaped supporting plates to automatically separate and open, and loosen and unload the cold-rolled steel after docking. This can save the trouble of additional manual operation of the two L-shaped supporting plates to loosen the cold-rolled steel plates after welding is completed, and the need for additional manual effort to pick up and unload the loosened cold-rolled steel plates. It is easy to operate and use, helps to simplify the operating steps of the welding device, and indirectly improves welding production efficiency.

[0024] In addition, the F-shaped sliding part of the welding machine comes into contact with the front and rear L-shaped transfer rods only after the two F-shaped limit frames are separated from the L-shaped support plate. This can avoid that when the two F-shaped limit frames are still blocking the card sleeves on the two L-shaped support plates, the two drive frames and the L-shaped support plates will begin to be pushed and driven to slide away from each other, breaking and damaging the four vertical support plates on the two F-shaped limit frames or forming a top-pressure braking effect on the two F-shaped limit frames and the welding machine, increasing the load on the drive motor and causing the drive motor to burn out, which helps to ensure that the automatic loosening and unloading function of the L-shaped support plate and the stable clamping and positioning function do not interfere with each other, are compatible with each other, and can be implemented normally and effectively.

[0025] In addition, the driving frame is welded and fixedly connected with the two sliding bars in the middle position, so that the pulling and sliding force applied to the front and rear ends of the cross-bracing driving plate in the front and rear directions can be transmitted to the middle position of the L-shaped supporting plate, so that the L-shaped supporting plate can divide the pulling and sliding force equally to the two springs located at the front and rear positions on a row of sliding bars to implement compression, thereby avoiding uneven force on the two springs causing a row of sliding bars and the L-shaped supporting plate to get stuck when sliding, and failing to normally loosen or tighten the cold-rolled steel plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings of the embodiment are briefly introduced below.

[0027] The drawings described below are only related to some embodiments of the present invention, but are not intended to limit the present invention.

[0028] In the attached picture:

[0029] Figure 1 The overall front side structural schematic diagram of the present invention is shown;

[0030] Figure 2 The overall rear side structure schematic diagram of the present invention is shown;

[0031] Figure 3 The overall bottom side structural schematic diagram of the present invention is shown;

[0032] Figure 4 A schematic diagram of a disassembled state of the welding machine of the present invention is shown;

[0033] Figure 5 The bottom structural diagram of the welding machine of the present invention is shown;

[0034] Figure 6 A schematic diagram of the structure of an F-shaped sliding member of the present invention is shown;

[0035] Figure 7 A schematic diagram of the driving frame structure of the present invention is shown;

[0036] Figure 8 A schematic diagram of the structure of the cross-bracing driving plate of the present invention is shown;

[0037] Fig. 9 The present invention shows Figure 3 The enlarged structural diagram of part A in the middle;

[0038] Fig.10 The present invention shows Figure 2 The enlarged structural diagram of part B in the middle;

[0039] Reference numerals list

[0040] 1. Welding frame; 101. First support frame; 102. Second support frame; 103. Longitudinal support mounting rod; 104. Horizontal support driving plate; 105. L-shaped transmission rod;

[0041] 2. L-shaped supporting plate; 201. sliding rod; 202. driving frame; 203. connecting rod;

[0042] 3. Welding machine; 301. F-shaped sliding member; 3011. Limiting strip; 302. F-shaped limiting frame; 303. Controller; 304. Welding gun; 305. Driving motor;

[0043] 4. Proximity sensor. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0045] refer to Figures 1 to 10 , is an embodiment provided by the present invention:

[0046] For the convenience of explanation, the directions in which the two drive frames 202 are symmetrically installed are marked as left and right directions;

[0047] The cold-rolled steel plate intelligent welding device comprises a welding frame 1 and a welding machine 3; the welding frame 1 as a whole is composed of two symmetrical ground contacting bottom plates at front and rear positions, and a first support frame 101 and a second support frame 102 welded to the top of the two ground contacting bottom plates at intervals on the left and right sides; the welding machine 3 is slidably mounted on the top longitudinal support rod of the first support frame 101;

[0048] Among them, a longitudinal support mounting rod 103 is welded inside the first support frame 101, and two L-shaped supporting plates 2 are installed on the longitudinal support mounting rod 103 and the second support frame 102 in a symmetrical sliding manner through spring pushing. The two L-shaped supporting plates 2 are used to carry and place two cold-rolled steel plates to be welded together. Through the springs on the two rows of sliding rods 201, the two L-shaped supporting plates 2 can hold the two cold-rolled steel plates tightly in a spliced ​​state for welding by the welding machine 3, and the two L-shaped supporting plates 2 are installed by spring pushing as a mechanism for positioning the cold-rolled steel plates. Only a simple sliding operation toward each other is required to realize the loosening and tightening of the cold-rolled steel plates. Compared with the positioning mechanism driven by multiple threaded advancements, the operation is simple and convenient;

[0049] An F-shaped sliding member 301 is welded to the bottom of the welding machine 3, and the F-shaped sliding member 301 is slidably matched with the top longitudinal support rod of the first support frame 101, and two F-shaped limit frames 302 are symmetrically welded on the F-shaped sliding member 301. When the four vertical support plates on the two F-shaped limit frames 302 follow the welding machine 3 to slide back and forth for welding, they slide and fit with the vertical support parts of the L-shaped supporting plate 2, and the two L-shaped supporting plates 2 can be blocked and limited by the sleeves, so that the two L-shaped supporting plates 2 can be stably maintained in the state of clamping and positioning the two cold-rolled steel plates, avoiding the two L-shaped supporting plates 2 to simply rely on the flexible top thrust output by the spring to maintain positioning, which is easy to loosen and cannot be rigidly and firmly clamped and fixed to the two cold-rolled steel plates, so that the two L-shaped supporting plates 2 can ensure convenient loosening while better taking into account the stability of clamping and fixing, and are more practical than the existing technology.

[0050] Preferably, a driving motor 305 is fixedly mounted at the bottom of the welding machine 3, the first support frame 101 and the second support frame 102 are both U-shaped structures, and a row of teeth are provided on the top longitudinal support rod of the first support frame 101 on the side facing the L-shaped support plate 2, and a gear is mounted at the bottom of the rotating shaft of the driving motor 305, and the gear is meshed with a row of teeth for transmission. Through the gear, the driving motor 305 can rotate forward and reverse to drive the welding machine 3 to slide back and forth along the top longitudinal support rod of the first support frame 101 to weld the two cold-rolled steel plates spliced ​​inside the two L-shaped support plates 2.

[0051] A row of slide bars 201 are welded to the bottom of the two L-shaped support plates 2. A U-shaped driving frame 202 is welded to the tail ends of the two rows of slide bars 201 at the middle positions. The front and rear ends of the two driving frames 202 are rotatably connected to a connecting rod 203.

[0052] The springs for pushing, holding and returning the two L-shaped supporting plates 2 are sleeved on two positions located at the front and rear outer sides of the two rows of slide bars 201. When the two L-shaped supporting plates 2 move away from each other and release and slide, the two springs will be compressed. If the front and rear springs are subjected to uneven compression force from the sliding of the two L-shaped supporting plates 2, the two L-shaped supporting plates 2 may become stuck.

[0053] The driving frame 202 is welded and fixedly connected to the two sliding bars 201 at the middle position, so that the pulling and sliding force applied to the front and rear ends of the cross-bracing driving plate 104 in the front and rear directions can be transmitted to the middle position of the L-shaped supporting plate 2, so that the L-shaped supporting plate 2 can divide the pulling and sliding force equally to the two springs located at the front and rear sides of a row of sliding bars 201 for compression, thereby avoiding uneven force on the two springs causing a row of sliding bars 201 and the L-shaped supporting plate 2 to get stuck when sliding, and failing to normally loosen or tighten the cold-rolled steel plate.

[0054] Preferably, two transverse brace drive plates 104 are symmetrically and slidably mounted at the front and rear ends of the longitudinal brace mounting rod 103, and the head ends of the four connecting rods 203 are correspondingly rotatably connected to the head ends of the two transverse brace drive plates 104;

[0055] Two positioning shafts with a hexagonal cross-section are symmetrically welded to the bottom of the front and rear ends of the longitudinal support mounting rod 103, and the longitudinal support mounting rod 103 is slidably matched with the positioning shafts.

[0056] Preferably, the tail ends of the two horizontal support driving plates 104 are pushed through and slided by springs to form an upright L-shaped transmission rod 105, and the top end of the L-shaped transmission rod 105 is in a T-shaped structure.

[0057] Preferably, after the welding machine 3 slides forward and backward and separates from the L-shaped supporting plate 2, the F-shaped sliding member 301 abuts against and contacts the L-shaped transmission rods 105 at the front and rear positions;

[0058] Specifically, the sliding loosening principle of the two L-shaped supporting plates 2 is as follows: four connecting rods 203, two driving frames 202 and two cross-bracing driving plates 104 are connected together to form four crank slider mechanisms. Through the four crank slider mechanisms, sliding the front cross-bracing driving plate 104 forward or sliding the rear cross-bracing driving plate 104 backward can push and drive the two driving frames 202 and the two L-shaped supporting plates 2 to slide away, loosening the welded cold-rolled steel plates, and the two L-shaped supporting plates 2 continue to slide away after loosening the cold-rolled steel plates, so that their bottom plates can be completely separated and opened, and the loosened cold-rolled steel plates can be unloaded;

[0059] Through the power transmission of the two L-shaped transmission rods 105 and the F-shaped sliding member 301, when the welding machine 3 is driven to slide forward and backward for welding, the two cross-bracing driving plates 104 can be pushed forward and backward to slide toward each other, and the two L-shaped supporting plates 2 can be controlled to automatically separate and open, and the cold-rolled steel after docking can be loosened and unloaded. This can save the trouble of additional manual operation of the two L-shaped supporting plates 2 to loosen the cold-rolled steel plates after welding and additional manual effort to take and unload the loosened cold-rolled steel plates. It is easy to operate and use, which helps to simplify the operation steps of the welding device and indirectly improve the welding production efficiency;

[0060] When the L-shaped transmission rod 105 slides down to the empty position and disengages from the F-shaped sliding member 301, the two driving frames 202 and the L-shaped supporting plate 2 lose the pushing and holding force from the F-shaped sliding member 301, and are pushed back and docked together by the springs on the two rows of sliding rods 201;

[0061] It is worth noting that: when one welding is completed, when it is used for welding again, it is necessary to manually pull the L-shaped transfer rod 105 to slide downward and disengage from the F-shaped sliding member 301, control the L-shaped supporting plate 2 to return to its position and dock together to prepare for carrying the cold-rolled steel plate to be welded again, and manually press to start the drive motor 305 and cut the direction of the drive motor 305.

[0062] After the welding machine 3 and the two F-shaped limit frames 302 are separated from the L-shaped supporting plate 2, the F-shaped sliding member 301 comes into contact with the front and rear L-shaped transfer rods 105. This can avoid that when the two F-shaped limit frames 302 are still blocking the card sleeve on the two L-shaped supporting plates 2, the two driving frames 202 and the L-shaped supporting plates 2 begin to be pushed and driven to slide away from each other, breaking and damaging the four vertical support plates on the two F-shaped limit frames 302 or forming a top-pressure braking effect on the two F-shaped limit frames 302 and the welding machine 3, increasing the load of the drive motor 305, causing the drive motor 305 to burn out, which helps to ensure that the automatic loosening and unloading function of the L-shaped supporting plate 2 and the stable clamping and positioning function do not interfere with each other and are compatible with each other, and can be implemented normally and effectively.

[0063] Preferably, the two rows of sliding rods 201 are pushed by springs to slide through and fit with the top longitudinal support rods and the longitudinal support mounting rods 103 of the second support frame 102 .

[0064] Preferably, the vertical support portion of the L-shaped transfer rod 105 is inserted into the long spacing groove between the drive frame 202 and the longitudinal support mounting rod 103 .

[0065] Preferably, a limit strip 3011 arranged along the length direction of the F-shaped sliding member 301 is welded on the bottom horizontal plate of the F-shaped sliding member 301, and a long limit strip groove is provided at the bottom of the top longitudinal support rod of the first support frame 101, and the limit strip 3011 slides in cooperation with the long limit strip groove.

[0066] Preferably, the welding machine 3 is provided with a controller 303, and a welding gun 304 capable of sliding up and down and left and right is installed on the side of the welding machine 3 facing the L-shaped support plate 2. The welding gun 304 is located in the middle of the welding machine 3. A welding wire is passed through the welding gun 304. When welding, the welding wire is continuously transported and supplied by an external welding wire supply system.

[0067] Two proximity sensors 4 are symmetrically installed at the front and rear ends of the top longitudinal support rod of the first support frame 101. The two proximity sensors 4 are electrically connected to the module inside the controller 303 for controlling the motor to stop. When welding is completed, the welding machine 3 and the L-shaped support plate 2 slide away from the front end or tail end of the top longitudinal support rod of the first support frame 101, and the proximity sensor 4 will be triggered. After the proximity sensor 4 is triggered, it outputs a high-level signal to the controller 303. After the controller 303 receives the high-level signal, the internal module for controlling the motor to stop cuts off the power supply of the drive motor 305, so that the welding machine 3 automatically and intelligently stops at the front end or tail end of the top longitudinal support rod of the first support frame 101.

[0068] Working principle: The two L-shaped support plates 2 are used to carry and place two cold-rolled steel plates that are butt-jointed and to be welded. Through the springs on the two rows of slide bars 201, the two L-shaped support plates 2 can hold the two cold-rolled steel plates tightly together for welding by the welding machine 3. Through the gears, the driving motor 305 can rotate forward and reverse to drive the welding machine 3 to slide forward and backward along the top longitudinal support rod of the first support frame 101, so as to weld the two cold-rolled steel plates spliced ​​inside the two L-shaped support plates 2;

[0069] When the four vertical support plates follow the welding machine 3 to slide forward and backward for welding, they slide and fit with the vertical support part of the L-shaped support plate 2. The two F-shaped limit frames 302 can implement the clamping sleeve blocking and limiting of the two L-shaped support plates 2 during the welding process through the four vertical support plates thereon, so that the two L-shaped support plates 2 are stably kept in the use state of clamping and positioning the two cold-rolled steel plates;

[0070] The four connecting rods 203, the two driving frames 202 and the two cross-bracing driving plates 104 are connected together to form a four-way crank slider mechanism. Through the four-way crank slider mechanism, the front cross-bracing driving plate 104 can be slid forward or the rear cross-bracing driving plate 104 can be pushed to drive the two driving frames 202 and the two L-shaped supporting plates 2 to slide away, loosening the welded cold-rolled steel plates. After the two L-shaped supporting plates 2 are loosened, they continue to slide away, and their bottom plates can be completely separated and opened to unload the loosened cold-rolled steel plates.

[0071] Through the power transmission of the two L-shaped transmission rods 105 and the F-shaped sliding member 301, when the welding machine 3 is driven to slide forward and backward for welding, it can push the two cross-bracing driving plates 104 to slide forward and backward respectively, and control the two L-shaped supporting plates 2 to automatically separate and open, and the cold-rolled steel after docking is loosened and unloaded;

[0072] When one welding is completed, when the welding machine 3 and the L-shaped supporting plate 2 slide away from the front end or the rear end of the longitudinal support rod at the top of the first support frame 101, the proximity sensor 4 will be triggered. After the proximity sensor 4 is triggered, a high-level signal is output to the controller 303. After the controller 303 receives the high-level signal, the internal module for controlling the motor to stop cuts off the power supply of the drive motor 305, so that the welding machine 3 automatically and intelligently stops at the front end or the rear end of the longitudinal support rod at the top of the first support frame 101;

[0073] After one welding is completed, when it is used for welding again, it is necessary to manually pull the L-shaped transfer rod 105 to slide downward and disengage from the F-shaped sliding member 301, control the L-shaped supporting plate 2 to return to its original position and dock together to prepare for carrying the cold-rolled steel plate to be welded again, and manually press to start the drive motor 305 and cut the direction of the drive motor 305.

[0074] In this article, there are a few points to note:

[0075] 1. The drawings of the embodiments of the present invention only involve structures related to the embodiments of the present invention, and other structures can refer to the general design.

[0076] 2. In the absence of conflict, the embodiments of the present invention and the features therein may be combined with each other to obtain new embodiments.

[0077] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art who is familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. Intelligent welding device for cold-rolled steel plates, including: A welding frame (1) and a welding machine (3); the welding frame (1) as a whole is composed of two symmetrical ground contacting bottom plates, a first support frame (101) and a second support frame (102) welded to the top ends of the two ground contacting bottom plates at intervals on the left and right, and the welding machine (3) is slidably mounted on the top longitudinal support rod of the first support frame (101); The invention is characterized in that a longitudinal support mounting rod (103) is welded inside the first support frame (101), and two L-shaped supporting plates (2) for carrying and positioning the cold-rolled steel plates to be welded are installed on the longitudinal support mounting rod (103) and the first support frame (101) and the second support frame (102) in a symmetrical sliding manner through spring pushing; An F-shaped sliding member (301) is welded to the bottom of the welding machine (3), the F-shaped sliding member (301) is slidably matched with the top longitudinal support rod of the first support frame (101), and two F-shaped limit frames (302) are symmetrically welded on the F-shaped sliding member (301), and when the four vertical support plates on the two F-shaped limit frames (302) follow the welding machine (3) to slide forward and backward for welding, they slide and fit with the vertical support parts of the L-shaped support plate (2) to block and limit the two L-shaped support plates (2); A driving motor (305) is fixedly mounted on the bottom of the welding machine (3), and the driving motor (305) is meshed with the top longitudinal support rod of the first support frame (101) through a gear rack mechanism for transmission; A row of slide bars (201) is welded to the bottom of the two L-shaped support plates (2), and a U-shaped driving frame (202) is welded to the tail ends of the two rows of slide bars (201) at the middle positions, and a connecting rod (203) is rotatably connected to the front and rear ends of the two driving frames (202); Two transverse brace drive plates (104) are symmetrically and slidably mounted at the front and rear ends of the longitudinal brace mounting rod (103), and the head ends of the four connecting rods (203) are rotatably connected to the head ends of the two transverse brace drive plates (104); Two positioning shafts with a hexagonal cross-section are symmetrically welded to the bottom of the front and rear ends of the longitudinal support mounting rod (103); The tail ends of the two horizontal support driving plates (104) are pushed through and slidably provided with an upright L-shaped transmission rod (105) by a spring, and the top end of the L-shaped transmission rod (105) is in a T-shaped structure; After the welding machine (3) slides forward and backward and is separated from the L-shaped support plate (2), the F-shaped sliding member (301) abuts against the two L-shaped transmission rods (105) at the front and rear positions, thereby pushing and driving the two L-shaped support plates (2) to slide away from each other, thereby loosening and unloading the cold-rolled steel plate after welding; The two rows of sliding rods (201) are pushed by springs to slide through and fit with the top longitudinal support rods and the longitudinal support mounting rods (103) of the second support frame (102); The vertical support portion of the L-shaped transmission rod (105) is inserted into the long spacing groove between the driving frame (202) and the longitudinal support mounting rod (103).

2. The cold-rolled steel plate intelligent welding device according to claim 1, characterized in that: A limit strip (3011) arranged along the length direction of the F-shaped sliding member (301) is welded on the bottom horizontal plate of the F-shaped sliding member (301), and a long limit strip groove is provided at the bottom of the longitudinal support rod at the top end of the first support frame (101), and the limit strip (3011) is slidably matched with the long limit strip groove.

3. The intelligent welding device for cold-rolled steel plates according to claim 1, characterized in that: The welding machine (3) is provided with a controller (303), and a welding gun (304) is installed on the side of the welding machine (3) facing the L-shaped supporting plate (2), and the welding gun (304) is located in the middle of the welding machine (3); Two proximity sensors (4) are symmetrically mounted at the front and rear ends of the longitudinal support rod at the top end of the first support frame (101), and the two proximity sensors (4) are electrically connected to the controller (303).

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