A rectangular tube automatic welding device

Abstract

The present invention is an automatic welding device for rectangular tubes, comprising an integral support frame, several sets of workpiece support welding platforms, several sets of automatic welding systems, a loading system, several sets of loading and grabbing systems, a unloading system and several sets of unloading and grabbing systems; the integral support frame is provided with several support beams, which are used to support and install the automatic welding system, the loading and grabbing system and the unloading and grabbing system; several sets of workpiece support welding platforms are arranged at intervals below the integral support frame, and are used to clamp and fix the workpieces to be welded; the automatic welding system is used to weld the workpieces; the loading system and the unloading system are respectively located on both sides of the workpiece support welding platform; the loading and grabbing system is used to transfer the workpieces on the loading system to the workpiece support welding platform, and the unloading and grabbing system is used to transfer the workpieces on the workpiece support welding platform to the unloading system. The welding operation of the present invention has a high degree of automation, is safe and reliable, and has high operating efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of welding devices, and in particular to an automatic welding device for rectangular tubes. Background Art

[0002] Rectangular tube is a hollow long strip of steel, also known as flat tube, flat square tube or square flat tube. It is light in weight when the bending and torsional strength are the same, so it is widely used in the manufacture of mechanical parts and engineering structures.

[0003] During the processing of rectangular tubes, welding operations are required. Currently, welding operations are performed manually or by machine, but generally the degree of automation is low, resulting in low efficiency of welding operations and affecting production progress. Summary of the invention

[0004] The present invention aims to solve the deficiencies of the prior art and provides an automatic welding device for rectangular tubes.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] An automatic rectangular tube welding device comprises an integral support frame, several sets of workpiece support welding platforms, several sets of automatic welding systems, a feeding system, several sets of feeding and grabbing systems, a unloading system and several sets of unloading and grabbing systems;

[0007] The bottom of the overall support frame is fixed to the ground through columns, and a plurality of support beams are provided on the overall support frame, and the support beams are used to support and install the automatic welding system, the loading and grabbing system, and the unloading and grabbing system;

[0008] Several sets of workpiece support welding platforms are arranged at intervals below the overall support frame to clamp and fix the workpiece to be welded;

[0009] The automatic welding system is used to weld workpieces;

[0010] The loading system and the unloading system are respectively located on both sides of the workpiece support welding platform, the loading system is used to transport the workpiece to one side of the workpiece support welding platform, and the unloading system is used to transport the workpiece away from the workpiece support welding platform;

[0011] The loading and grabbing system is used to transfer the workpiece on the loading system to the workpiece support welding platform, and the unloading and grabbing system is used to transfer the workpiece on the workpiece support welding platform to the unloading system.

[0012] Several sets of workpiece support welding platforms are arranged at equal intervals below the overall support frame. Positioning blocks and clamping cylinders are provided at both ends of the upper surface of each set of workpiece support welding platforms. The telescopic rod of the clamping cylinder faces the positioning block and is connected to a clamping plate. A space for placing the workpiece is formed between the positioning block and the clamping plate. Two rotating cylinders are provided on one side of the workpiece on the upper surface of the workpiece support welding platform. A pressure plate is installed on the rotating cylinder. The pressure plate abuts against the upper surface of the workpiece to fix the workpiece.

[0013] A plurality of automatic welding systems are installed at equal intervals on the support beam of the overall support frame, each automatic welding system includes a wire feeder and a welding system, the wire feeder provides welding wire for the welding system, the welding system includes an X-axis transmission screw installed horizontally on the support beam, a horizontally arranged Y-axis transmission screw is fixed on the nut of the X-axis transmission screw, the Y-axis transmission screw is perpendicular to the X-axis transmission screw, a vertical Z-axis transmission screw is fixed on the nut of the Y-axis transmission screw, a welding robot is fixed at the bottom of the nut of the Z-axis transmission screw, and the X-axis transmission screw, the Y-axis transmission screw and the Z-axis transmission screw are all connected to drive motors.

[0014] The loading and grabbing systems are two sets distributed on the supporting beams at both ends of the overall supporting frame, and the unloading and grabbing systems are two sets distributed on the supporting beams at both ends of the overall supporting frame, each set of the loading and grabbing systems and the unloading and grabbing systems include a fixed rack fixed on the supporting beam, a horizontal plate is provided on the fixed rack, a first rotating motor is provided on the horizontal plate, the rotating shaft of the first rotating motor passes through the horizontal plate and is connected to a first gear, the first gear is meshed with the fixed rack, a U-shaped fixed frame is provided on one side of the horizontal plate, a moving rack is slidably installed between the U-shaped fixed frames, a second rotating motor is installed on the U-shaped fixed frame, the rotating shaft of the second rotating motor is connected to a second gear, the second gear is meshed with the moving rack, a fixed plate is provided at the bottom of the moving rack, a vertical fixed clamp is provided at the bottom of the fixed plate, a clamping cylinder is provided on the fixed plate, and the telescopic rod of the clamping cylinder is connected to a vertical moving clamp, and the fixed clamp and the moving clamp are used to clamp the workpiece.

[0015] The loading system and the unloading system both include a mobile frame and two parallel slide rails, both ends of the mobile frame are provided with workpiece transport platforms, vertical baffles are provided on both sides of the upper surface of the transport platform along the transport direction, a group of driving wheels and a group of driven wheels are provided at the bottom of the mobile frame, the driving wheels and the driven wheels are rotatably mounted on the slide rails, a transmission rod is provided between the two driving wheels, a transmission gear is provided on the transmission rod, a travel motor is fixed on the mobile frame, the travel motor is connected to a reduction gear box, and the output shaft of the reduction gear box is connected to the transmission gear through a transmission chain.

[0016] There are four sets of workpiece support welding platforms in total. The two outermost sets of workpiece support welding platforms are provided with extension platforms, and the extension platforms are provided with positioning cylinders. The telescopic rods of the positioning cylinders face the ends of the workpieces and are connected to positioning plates.

[0017] A rubber pad is arranged on one side of the fixed clamp and the movable clamp for clamping the workpiece.

[0018] A plurality of partition columns are arranged between two baffles on the upper surface of the workpiece transport platform.

[0019] There are four sets of automatic welding systems.

[0020] The beneficial effects of the present invention are as follows: the present invention utilizes a loading system to transport the workpiece, a loading grabbing system grabs the workpiece and places it on a workpiece support welding platform, and then utilizes an automatic welding system to perform welding operations on it, and finally a unloading grabbing system transfers the workpiece to the unloading system and then transports it away, completing the entire operation process, and the welding operation has a high degree of automation, is safe and reliable, and has high operating efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of the structure of one aspect of the present invention;

[0022] Figure 2 It is a structural schematic diagram of another aspect of the present invention;

[0023] Figure 3 This is a schematic diagram of the structure of the present invention after omitting the feeding system and the unloading system;

[0024] Figure 4 It is a schematic diagram of the structure of the welding platform supporting the workpiece;

[0025] Figure 5 It is a schematic diagram of the structure of the extension platform outside the workpiece support welding platform;

[0026] Figure 6 It is a structural schematic diagram of the automatic welding system;

[0027] Figure 7 It is a schematic diagram of the structure of the loading and unloading grabbing system;

[0028] Figure 8 It is a structural diagram of the feeding system and the unloading system;

[0029] In the figure: 1-integral support frame; 2-workpiece support welding platform; 3-automatic welding system; 4-feeding system; 5-feeding grabbing system; 6-unloading system; 7-unloading grabbing system; 8-positioning block; 9-clamping cylinder; 10-clamping plate; 11-rotating oil cylinder; 12-pressing plate; 13-wire feeder; 14-X-axis transmission screw; 15-Y-axis transmission screw; 16-Z-axis transmission screw; 17-welding manipulator; 18-fixed rack; 19-horizontal plate; 2 0-first rotating motor; 21-first gear; 22-U-shaped fixed frame; 23-moving rack; 24-second rotating motor; 25-fixed plate; 26-fixed clamp; 27-clamping cylinder; 28-moving clamp; 29-moving frame; 30-slide rail; 31-workpiece transport platform; 32-baffle; 33-driving wheel; 34-moving wheel; 35-transmission rod; 36-transmission gear; 37-travel motor; 38-extension table; 39-positioning cylinder; 40-partition column;

[0030] The following is a detailed description of the embodiments of the present invention with reference to the accompanying drawings. DETAILED DESCRIPTION

[0031] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0032] like Figures 1 to 3 As shown, an automatic rectangular tube welding device includes an integral support frame 1, several sets of workpiece support welding platforms 2, several sets of automatic welding systems 3, a feeding system 4, several sets of feeding and grabbing systems 5, a unloading system 6 and several sets of unloading and grabbing systems 7;

[0033] The bottom of the overall support frame 1 is fixed to the ground through columns, and a plurality of support beams are provided on the overall support frame 1, and the support beams are used to support and install the automatic welding system 3, the loading and grabbing system 5, and the unloading and grabbing system 7;

[0034] Several sets of workpiece support welding platforms 2 are arranged at intervals below the overall support frame 1, and are used to clamp and fix the workpieces to be welded;

[0035] The automatic welding system 3 is used to weld the workpiece;

[0036] The loading system 4 and the unloading system 6 are respectively located on both sides of the workpiece support welding platform 2. The loading system 4 is used to transport the workpiece to one side of the workpiece support welding platform 2, and the unloading system 6 is used to transport the workpiece away from the workpiece support welding platform 2.

[0037] The loading and grabbing system 5 is used to transfer the workpiece on the loading system 4 to the workpiece support welding platform 2, and the unloading and grabbing system 7 is used to transfer the workpiece on the workpiece support welding platform 2 to the unloading system 6.

[0038] Several sets of workpiece support welding platforms 2 are arranged at equal intervals below the overall support frame 1, such as Figure 4 As shown, positioning blocks 8 and clamping cylinders 9 are provided at both ends of the upper surface of each set of workpiece supporting welding platform 2. The telescopic rod of the clamping cylinder 9 faces the positioning block 8 and is connected with a clamping plate 10. A space for placing the workpiece is formed between the positioning block 8 and the clamping plate 10. Two rotating cylinders 11 are provided on one side of the workpiece on the upper surface of the workpiece supporting welding platform 2. A pressing plate 12 is installed on the rotating cylinder 11. The pressing plate 12 is pressed against the upper surface of the workpiece for fixing the workpiece.

[0039] like Figure 6 As shown, several sets of automatic welding systems 3 are installed at equal intervals on the support beam of the overall support frame 1, and each set of automatic welding system 3 includes a wire feeder 13 and a welding system. The wire feeder 13 provides welding wire for the welding system, and the welding system includes an X-axis transmission screw 14 installed horizontally on the support beam, and a horizontally arranged Y-axis transmission screw 15 is fixed on the nut of the X-axis transmission screw 14. The Y-axis transmission screw 15 is perpendicular to the X-axis transmission screw 14, and a vertical Z-axis transmission screw 16 is fixed on the nut of the Y-axis transmission screw 15. A welding robot 17 is fixed at the bottom of the nut of the Z-axis transmission screw 16, and the X-axis transmission screw 14, the Y-axis transmission screw 15, and the Z-axis transmission screw 16 are all connected to drive motors.

[0040] The material loading grabbing system 5 is two sets distributed on the supporting beams at both ends of the overall supporting frame 1, and the material unloading grabbing system 7 is two sets distributed on the supporting beams at both ends of the overall supporting frame 1. Figure 7 As shown, each set of loading and grabbing system 5 and unloading and grabbing system 7 includes a fixed rack 18 fixed on a support beam, a horizontal plate 19 is provided on the fixed rack 18, a first rotating motor 20 is provided on the horizontal plate 19, a rotating shaft of the first rotating motor 20 passes through the horizontal plate 19 and is connected to a first gear 21, the first gear 21 is meshed with the fixed rack 18, a U-shaped fixing frame 22 is provided on one side of the horizontal plate 19, a moving rack 23 is slidably installed between the U-shaped fixing frames 22, a second rotating motor 24 is installed on the U-shaped fixing frame 22, a rotating shaft of the second rotating motor 24 is connected to a second gear, the second gear is meshed with the moving rack 23, a fixed plate 25 is provided at the bottom of the moving rack 23, a vertical fixed clamp 26 is provided at the bottom of the fixed plate 25, a clamping cylinder 27 is provided on the fixed plate 25, the telescopic rod of the clamping cylinder 27 is connected to a vertical moving clamp 28, the fixed clamp 26 and the moving clamp 28 are used to clamp the workpiece.

[0041] like Figure 8As shown, the loading system 4 and the unloading system 6 both include a mobile frame 29 and two parallel slide rails 30, both ends of the mobile frame 29 are provided with workpiece transport platforms 31, the upper surface of the transport platform 31 is provided with vertical baffles 32 on both sides along the transport direction, a group of driving wheels 33 and a group of driven wheels 34 are provided at the bottom of the mobile frame 29, the driving wheels 33 and the driven wheels 34 are rollingly mounted on the slide rails 30, a transmission rod 35 is provided between the two driving wheels 33, and a transmission gear 36 is provided on the transmission rod 35, a travel motor 37 is fixed on the mobile frame 29, the travel motor 37 is connected to a reduction box, and the output shaft of the reduction box is connected to the transmission gear 36 through a transmission chain.

[0042] There are four sets of workpiece support welding platforms 2, and the two sets of workpiece support welding platforms 2 on the edge are provided with extension platforms 38, such as Figure 5 As shown, a positioning cylinder 39 is disposed on the extension platform 38 , and the telescopic rod of the positioning cylinder 39 faces the end of the workpiece and is connected to a positioning plate.

[0043] The fixed clamp 26 and the movable clamp 28 are provided with rubber pads on one side for clamping the workpiece.

[0044] A plurality of partition columns 40 are disposed on the upper surface of the workpiece transport platform 31 between the two baffles 32 .

[0045] There are four sets of automatic welding systems 3.

[0046] The present invention utilizes a loading system 4 to transport the workpiece, a loading grabbing system 5 grabs the workpiece and places it on a workpiece support welding platform 2, and then utilizes an automatic welding system 3 to perform welding operations on it, and finally a unloading grabbing system 7 transfers the workpiece to an unloading system 6 and then transports it away, completing the entire operation process, and the welding operation has a high degree of automation, is safe and reliable, and has high operating efficiency.

[0047] The present invention is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as various improvements are made using the method concept and technical solution of the present invention, or are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. An automatic welding device for rectangular tubes, characterized in that: It comprises an integral support frame (1), several sets of workpiece support welding platforms (2), several sets of automatic welding systems (3), a loading system (4), several sets of loading and grabbing systems (5), a unloading system (6) and several sets of unloading and grabbing systems (7); The bottom of the overall support frame (1) is fixed to the ground via columns, and a plurality of support beams are provided on the overall support frame (1), and the support beams are used to support and install an automatic welding system (3), a material loading and grabbing system (5), and a material unloading and grabbing system (7); A plurality of sets of workpiece support welding platforms (2) are arranged at intervals below the overall support frame (1) and are used to clamp and fix the workpiece to be welded; The automatic welding system (3) is used to weld workpieces; The loading system (4) and the unloading system (6) are respectively located on both sides of the workpiece support welding platform (2); the loading system (4) is used to transport the workpiece to one side of the workpiece support welding platform (2), and the unloading system (6) is used to transport the workpiece away from the workpiece support welding platform (2); The loading system (4) and the unloading system (6) both comprise a mobile frame (29) and two parallel slide rails (30), the two ends of the mobile frame (29) are provided with workpiece transport platforms (31), the upper surface of the transport platform (31) is provided with vertical baffles (32) on both sides along the transport direction, the bottom of the mobile frame (29) is provided with a group of driving wheels (33) and a group of driven wheels (34), the driving wheels (33) and the driven wheels (34) are rollingly mounted on the slide rails (30), a transmission rod (35) is provided between the two driving wheels (33), and a transmission gear (36) is provided on the transmission rod (35), a travel motor (37) is fixed on the mobile frame (29), the travel motor (37) is connected to a reduction box, and the output shaft of the reduction box is connected to the transmission gear (36) through a transmission chain; The loading and grabbing system (5) is used to transfer the workpiece on the loading system (4) to the workpiece support welding platform (2), and the unloading and grabbing system (7) is used to transfer the workpiece on the workpiece support welding platform (2) to the unloading system (6); The loading and grabbing systems (5) are two sets distributed on the supporting beams at both ends of the overall support frame (1), and the unloading and grabbing systems (7) are two sets distributed on the supporting beams at both ends of the overall support frame (1). Each set of the loading and grabbing systems (5) and the unloading and grabbing systems (7) include a fixed rack (18) fixed on the supporting beam, a horizontal plate (19) is provided on the fixed rack (18), a first rotating motor (20) is provided on the horizontal plate (19), a rotating shaft of the first rotating motor (20) passes through the horizontal plate (19) and is connected to a first gear (21), the first gear (21) is meshed with the fixed rack (18), and one side of the horizontal plate (19) is provided with a A U-shaped fixing frame (22) is provided, a moving rack (23) is slidably installed between the U-shaped fixing frame (22), a second rotating motor (24) is installed on the U-shaped fixing frame (22), a rotating shaft of the second rotating motor (24) is connected with a second gear, the second gear is meshed with the moving rack (23), a fixing plate (25) is provided at the bottom of the moving rack (23), a vertical fixing clamp (26) is provided at the bottom of the fixing plate (25), a clamping cylinder (27) is provided on the fixing plate (25), a telescopic rod of the clamping cylinder (27) is connected with a vertical moving clamp (28), and the fixing clamp (26) and the moving clamp (28) are used to clamp the workpiece.

2. The rectangular tube automatic welding device according to claim 1, characterized in that: A plurality of workpiece support welding platforms (2) are arranged at equal intervals below the integral support frame (1). Positioning blocks (8) and clamping cylinders (9) are provided at both ends of the upper surface of each workpiece support welding platform (2). The telescopic rod of the clamping cylinder (9) faces the positioning block (8) and is connected to a clamping plate (10). A space for placing the workpiece is formed between the positioning block (8) and the clamping plate (10). Two rotating cylinders (11) are provided on one side of the workpiece on the upper surface of the workpiece support welding platform (2). A pressing plate (12) is installed on the rotating cylinder (11). The pressing plate (12) abuts against the upper surface of the workpiece to fix the workpiece.

3. The rectangular tube automatic welding device according to claim 1 is characterized in that: A plurality of automatic welding systems (3) are installed at equal intervals on a support beam of an integral support frame (1), each automatic welding system (3) comprising a wire feeder (13) and a welding system, the wire feeder (13) providing welding wire for the welding system, the welding system comprising an X-axis transmission lead screw (14) installed horizontally on the support beam, a Y-axis transmission lead screw (15) fixed horizontally on the nut of the X-axis transmission lead screw (14), the Y-axis transmission lead screw (15) being perpendicular to the X-axis transmission lead screw (14), a vertical Z-axis transmission lead screw (16) fixed on the nut of the Y-axis transmission lead screw (15), a welding manipulator (17) fixed at the bottom of the nut of the Z-axis transmission lead screw (16), and the X-axis transmission lead screw (14), the Y-axis transmission lead screw (15), and the Z-axis transmission lead screw (16) are all connected to a drive motor.

4. The rectangular tube automatic welding device according to claim 1, characterized in that: There are four sets of workpiece supporting welding platforms (2), and the two outermost sets of workpiece supporting welding platforms (2) are provided with extension platforms (38), and the extension platforms (38) are provided with positioning cylinders (39), and the telescopic rods of the positioning cylinders (39) face the ends of the workpieces and are connected to positioning plates.

5. The rectangular tube automatic welding device according to claim 1, characterized in that: A rubber pad is provided on one side of the fixed clamp (26) and the movable clamp (28) for clamping the workpiece.

6. The rectangular tube automatic welding device according to claim 1, characterized in that: A plurality of partition columns (40) are arranged at intervals between two baffles (32) on the upper surface of the workpiece transport platform (31).

7. An automatic rectangular tube welding device according to any one of claims 1 to 6, characterized in that: There are four sets of automatic welding systems (3) in total.

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