Double-gun automatic welding machine

Abstract

The utility model provides a double-gun automatic welding machine, and belongs to the technical field of machinery. The automatic welding machine solves the problems that an existing automatic welding machine cannot weld the circumference of a workpiece and is low in welding efficiency. The double-gun automatic welding machine comprises a base and a support fixedly connected to one side of the base, a welding gun assembly and a driving mechanism capable of driving the welding gun assembly to reciprocate are arranged on the support, a rotating disc and a rotating mechanism driving the rotating disc to rotate are fixedly connected to the base in the axial direction, and a three-jaw chuck used for clamping a workpiece is arranged at the upper end of the rotating disc. A pressure head and a lifting mechanism for driving the pressure head to lift are arranged on the upper side of the turntable. The double-gun automatic welding machine has the advantages that rotating workpieces can be welded, welding stability is good, welding efficiency is high, operation is convenient, and cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of machinery and relates to a welding machine, in particular to a double-gun automatic welding machine. Background Art

[0002] Welding, also known as fusion, is a manufacturing process and technology that joins metals or other thermoplastic materials such as plastics by heating, high temperature or high pressure. There are many sources of energy for modern welding, including gas flame, arc, laser, electron beam, friction and ultrasound. In addition to being used in factories, welding can also be performed in a variety of environments, such as outdoors, underwater and in space. No matter where, welding may bring danger to the operator, so appropriate protective measures must be taken during welding. The possible harm caused by welding to the human body includes burns, electric shock, visual impairment, inhalation of toxic gases, excessive ultraviolet radiation, etc. However, the existing welding equipment can only weld workpieces one by one, and it is inconvenient to adjust the angle of the workpiece when welding the workpiece, which greatly increases the difficulty of welding the workpiece and reduces the welding efficiency of the workpiece.

[0003] For example, a dual-gun five-axis automatic welding equipment mechanism disclosed in a Chinese patent document (application number: 202122526123.7) includes a drive assembly, which includes a first drive member, a second drive member is installed on the first drive member, and the first drive member is used to drive the second drive member to move left and right, and a third drive member is installed on the second drive member, and the second drive member is used to drive the third drive member to move forward and backward. However, the dual-gun five-axis automatic welding equipment mechanism cannot weld the circumference of the workpiece and has low welding efficiency. Summary of the invention

[0004] The utility model aims to solve the above problems in the prior art and proposes an automatic welding machine which can weld rotating workpieces and has good welding stability and high welding efficiency.

[0005] The purpose of the utility model can be achieved through the following technical solutions: a double-gun automatic welding machine, comprising a base and a bracket fixedly connected to one side of the base, the bracket is provided with a welding gun assembly and a driving mechanism capable of driving the welding gun assembly to and fro, characterized in that a turntable and a rotating mechanism driving the turntable to rotate are axially fixedly connected to the base, a three-jaw chuck for clamping a workpiece is provided at the upper end of the turntable, a pressure head and a lifting mechanism driving the pressure head to rise and fall are provided on the upper side of the turntable.

[0006] During operation, the workpiece is clamped by the three-jaw chuck, and the lifting mechanism drives the pressure head to descend and press against the upper end of the workpiece. The turntable is driven to rotate by the rotating mechanism, thereby driving the three-jaw chuck and the workpiece to rotate. The workpiece is welded by the welding gun assembly, so that the double-gun automatic welding machine can weld the rotating workpiece, has good welding stability and high welding efficiency, is easy to operate, and reduces costs.

[0007] In the above-mentioned double-gun automatic welding machine, the lower end of the turntable is fixedly connected with a coaxially arranged central shaft, the rotating mechanism includes a motor arranged on a base, and a synchronous belt assembly is arranged between the rotating shaft of the motor and the central shaft. The rotating mechanism adopts a motor and a synchronous belt assembly, which has the advantages of simple structure and reliable operation.

[0008] In the above-mentioned double-gun automatic welding machine, a bearing seat is fixedly connected to the base, the central axis passes through the bearing seat, and a bearing is arranged between the central axis and the bearing seat.

[0009] In the above-mentioned double-gun automatic welding machine, the lifting mechanism includes a cylinder whose cylinder body is fixedly connected to the bracket, the cylinder is vertically arranged downward, and the piston rod of the cylinder is fixedly connected to the pressure head. The lifting mechanism adopts the cylinder, which has the advantages of reliable structure and high working efficiency. As another way, the cylinder is replaced by a motor, a screw rod and a nut assembly.

[0010] In the above-mentioned double-gun automatic welding machine, the bracket includes a column vertically fixedly connected to one side of the base, a horizontally arranged crossbeam is fixedly connected to the column, a mounting frame is fixedly connected to the crossbeam, a mounting plate is provided on the mounting frame, the welding gun assembly is arranged on the mounting plate and the welding gun assembly can reciprocate with the mounting plate.

[0011] In the above-mentioned double-gun automatic welding machine, the crossbeam is provided with two parallel slide grooves, the head of the screw passes through the slide groove and the rod of the screw is fixedly connected with the thread of the mounting frame. The screw passes through the slide groove and is fixedly connected with the thread of the mounting frame, which has a firm connection and a simple structure, and is convenient for adjusting the position of the mounting frame, thereby adjusting the position of the welding gun assembly.

[0012] In the above-mentioned double-gun automatic welding machine, a guide rail is fixedly connected to the mounting frame, and a sliding block matching the guide rail is fixedly connected to the inner end surface of the mounting plate.

[0013] In the above-mentioned double-gun automatic welding machine, the driving mechanism is a second cylinder whose cylinder body is fixedly connected to the mounting frame, and the piston rod of the second cylinder is fixedly connected to the mounting plate. The mounting plate is pushed to translate by the second cylinder, and the movement of the welding gun assembly is driven, which has the advantages of simple structure and reliable and stable operation.

[0014] In the above-mentioned double-gun automatic welding machine, the welding gun assembly includes a connecting rod seat, connecting rod 1, connecting rod 2, a universal transfer block and a welding gun, the connecting rod seat is fixedly connected to the mounting plate, one end of the connecting rod 1 is fixedly connected to the connecting rod seat, one end of the connecting rod 2 and the other end of the connecting rod 1 are provided with the universal transfer block, and the other end of the connecting rod 2 and the welding gun are provided with a universal transfer block. With the above-mentioned arrangement, after adjusting the position and angle of the welding gun, the universal connection block is locked, which has the advantages of convenient adjustment and reliable structure.

[0015] In the above-mentioned double-gun automatic welding machine, two mounting frames are arranged on the crossbeam, and the two mounting frames are respectively located on both sides of the column, and the welding gun assembly is arranged on each mounting frame.

[0016] Compared with the existing technology, this double-gun automatic welding machine has the following advantages:

[0017] 1. The motor drives the turntable to rotate through the synchronous belt assembly, thereby driving the three-jaw chuck and the workpiece to rotate, and the workpiece is welded through the welding gun assembly, so that this automatic welding machine can weld the rotating workpiece, with good welding stability and high welding efficiency;

[0018] 2. The lifting mechanism includes a cylinder whose cylinder body is fixedly connected to the bracket, the cylinder is arranged vertically downward, and the piston rod of the cylinder is fixedly connected to the pressure head, which has the advantages of reliable structure and high working efficiency;

[0019] 3. The screw passes through the slide groove and is fixedly connected to the thread of the mounting frame, which has a firm connection and a simple structure, and is convenient for adjusting the position of the mounting frame, thereby adjusting the position of the welding gun assembly; BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional schematic diagram of the double-gun automatic welding machine.

[0021] Figure 2 It is a main view schematic diagram of the double-gun automatic welding machine.

[0022] Figure 3 yes Figure 2 AA cross-sectional view of .

[0023] Figure 4 yes Figure 2 BB cross-sectional view.

[0024] In the figure, 1, base; 2, bracket; 2a, column; 2b, beam; 2c, slide; 3, welding gun assembly; 3a, connecting rod seat; 3b, connecting rod one; 3c, connecting rod two; 3d, universal adapter block; 3e, welding gun; 4, turntable; 5, three-jaw chuck; 6, pressure head; 7, lifting mechanism; 7a, cylinder; 8, driving mechanism; 8a, cylinder two; 9, center axis; 10, workpiece; 11, synchronous belt assembly; 12, bearing seat; 13, bearing; 14, mounting frame; 15, mounting plate; 16, screw; 17, guide rail; 18, slider. DETAILED DESCRIPTION

[0025] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0026] like Figures 1 to 4 As shown, the double-gun automatic welding machine includes a base 1 and a bracket 2 fixedly connected to one side of the base 1, and the bracket 2 is provided with two welding gun assemblies 3 and two driving mechanisms 8 that can respectively drive the corresponding welding gun assemblies 3 to move back and forth. The driving mechanism 8 is a cylinder 8a whose cylinder body is fixedly connected to the mounting frame 14, and the piston rod of the cylinder 8a is fixedly connected to the mounting plate 15.

[0027] A turntable 4 and a rotating mechanism for driving the turntable 4 to rotate are axially fixedly connected to the base 1. A coaxially arranged central shaft 9 is fixedly connected to the lower end of the turntable 4. A bearing seat 12 is fixedly connected to the base 1. The central shaft 9 passes through the bearing seat 12. A bearing 13 is arranged between the central shaft 9 and the bearing seat 12. The rotating mechanism includes a motor arranged on the base 1. A synchronous belt assembly 11 is arranged between the rotating shaft of the motor and the central shaft 9.

[0028] A three-jaw chuck 5 for clamping a workpiece 10 is provided at the upper end of the turntable 4, and a pressure head 6 and a lifting mechanism 7 for driving the pressure head 6 to rise and fall are provided on the upper side of the turntable 4. The lifting mechanism 7 includes a cylinder 7a whose cylinder body is fixedly connected to the bracket 2, and the cylinder 7a is vertically arranged downward, and the piston rod of the cylinder 7a is fixedly connected to the pressure head 6. The lifting mechanism 7 adopts the cylinder 7a, which has the advantages of reliable structure and high working efficiency. As another way, the cylinder 7a is replaced by a motor, a screw rod and a nut assembly.

[0029] The bracket 2 includes a column 2a vertically fixed to one side of the base 1, a horizontally arranged crossbeam 2b is fixed to the column 2a, a mounting frame 14 is fixed to the crossbeam 2b, a mounting frame 14 is provided with a mounting plate 15, a guide rail 17 is fixed to the mounting frame 14, and a slider 18 matching the guide rail 17 is fixed to the inner end surface of the mounting plate 15.

[0030] The welding gun assembly 3 is arranged on the mounting plate 15 and can reciprocate with the mounting plate 15. Two parallel slide grooves 2c are arranged on the cross beam 2b, and the head of the screw 16 passes through the slide groove 2c and the rod of the screw 16 is threadedly connected to the mounting frame 14. The screw 16 passes through the slide groove 2c and is threadedly connected to the mounting frame 14, which has a firm connection and a simple structure, and is convenient for adjusting the position of the mounting frame 14, thereby adjusting the position of the welding gun assembly 3.

[0031] The welding gun assembly 3 includes a connecting rod seat 3a, a connecting rod 1 3b, a connecting rod 2 3c, a universal transfer block 3d and a welding gun 3e. The connecting rod seat 3a is fixedly connected to the mounting plate 15, one end of the connecting rod 1 3b is fixedly connected to the connecting rod seat 3a, one end of the connecting rod 2 3c and the other end of the connecting rod 1 3b are provided with a universal transfer block 3d, and a universal transfer block 3d is provided between the other end of the connecting rod 2 3c and the welding gun 3e. After adjusting the position and angle of the welding gun 3e, the universal connection block is locked, which has the advantages of convenient adjustment and reliable structure.

[0032] Two mounting frames 14 are provided on the cross beam 2 b . The two mounting frames 14 are respectively located on both sides of the column 2 a . A welding gun assembly 3 is provided on each mounting frame 14 .

[0033] During operation, the workpiece 10 is clamped by the three-jaw chuck 5, and the cylinder 7a drives the pressure head 6 to descend and press against the upper end of the workpiece 10. The turntable 4 is driven to rotate by the motor and the synchronous belt assembly 11, thereby driving the three-jaw chuck 5 and the workpiece 10 to rotate. The mounting plate 15 is pushed to translate by the cylinder 8a, and the movement of the welding gun assembly 3 is driven, and the workpiece 10 is welded by the welding gun 3e, so that the automatic welding machine can weld the rotating workpiece 10, and has the advantages of good welding stability and high welding efficiency.

[0034] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0035] Although the present invention uses the terms such as base 1, bracket 2, column 2a, beam 2b, slide 2c, welding gun assembly 3, connecting rod seat 3a, connecting rod 1 3b, connecting rod 2 3c, universal joint block 3d, welding gun 3e, turntable 4, three-jaw chuck 5, pressure head 6, lifting mechanism 7, cylinder 7a, drive mechanism 8, cylinder 2 8a, center shaft 9, workpiece 10, synchronous belt assembly 11, bearing seat 12, bearing 13, mounting frame 14, mounting plate 15, screw 16, guide rail 17, slider 18, etc., the possibility of using other terms is not excluded. The use of these terms is only for the purpose of more conveniently describing and explaining the essence of the present invention; interpreting them as any additional restrictions is contrary to the spirit of the present invention.

Claims

1. A double-gun automatic welding machine, comprising a base (1) and a bracket (2) fixedly connected to one side of the base (1), wherein the bracket (2) is provided with a welding gun assembly (3) and a driving mechanism (8) capable of driving the welding gun assembly (3) to move back and forth, characterized in that: A turntable (4) and a rotating mechanism for driving the turntable (4) to rotate are axially fixedly connected to the base (1); a three-jaw chuck (5) for clamping a workpiece is provided at the upper end of the turntable (4); a pressure head (6) and a lifting mechanism (7) for driving the pressure head (6) to rise and fall are provided on the upper side of the turntable (4).

2. The double-gun automatic welding machine according to claim 1, characterized in that: The lower end of the turntable (4) is fixedly connected to a coaxially arranged central shaft (9), and the rotating mechanism comprises a motor arranged on a base (1), and a synchronous belt assembly (11) is arranged between the rotating shaft of the motor and the central shaft (9).

3. The double-gun automatic welding machine according to claim 2, characterized in that: A bearing seat (12) is fixedly connected to the base (1), the central axis (9) passes through the bearing seat (12), and a bearing (13) is provided between the central axis (9) and the bearing seat (12).

4. The double-gun automatic welding machine according to claim 1, characterized in that: The lifting mechanism (7) comprises a cylinder (7a) whose cylinder body is fixedly connected to the bracket (2); the cylinder (7a) is arranged vertically downward; and the piston rod of the cylinder (7a) is fixedly connected to the pressure head (6).

5. The double-gun automatic welding machine according to claim 4, characterized in that: The bracket (2) comprises a column (2a) vertically fixedly connected to one side of the base (1); a horizontally arranged crossbeam (2b) is fixedly connected to the column (2a); a mounting frame (14) is fixedly connected to the crossbeam (2b); a mounting plate (15) is provided on the mounting frame (14); the welding gun assembly (3) is arranged on the mounting plate (15) and the welding gun assembly (3) can reciprocate with the mounting plate (15).

6. The double-gun automatic welding machine according to claim 5, characterized in that: The crossbeam (2b) is provided with two parallel sliding grooves (2c), the head of the screw (16) passes through the sliding groove (2c) and the rod of the screw (16) is fixedly connected with the mounting frame (14) by thread.

7. The double-gun automatic welding machine according to claim 5, characterized in that: A guide rail (17) is fixedly connected to the mounting frame (14), and a sliding block (18) matching the guide rail (17) is fixedly connected to the inner end surface of the mounting plate (15).

8. The double-gun automatic welding machine according to claim 5, 6 or 7, characterized in that: The driving mechanism (8) is a second cylinder (8a) whose cylinder body is fixedly connected to the mounting frame (14), and the piston rod of the second cylinder (8a) is fixedly connected to the mounting plate (15).

9. The double-gun automatic welding machine according to claim 5, 6 or 7, characterized in that: The welding gun assembly (3) comprises a connecting rod seat (3a), a connecting rod one (3b), a connecting rod two (3c), a universal transfer block (3d) and a welding gun (3e), wherein the connecting rod seat (3a) is fixedly connected to the mounting plate (15), one end of the connecting rod one (3b) is fixedly connected to the connecting rod seat (3a), one end of the connecting rod two (3c) and the other end of the connecting rod one (3b) are provided with the universal transfer block (3d), and the universal transfer block (3d) is provided between the other end of the connecting rod two (3c) and the welding gun (3e).

10. The double-gun automatic welding machine according to claim 5, 6 or 7, characterized in that: Two mounting frames (14) are arranged on the crossbeam (2b), and the two mounting frames (14) are respectively located on two sides of the column (2a), and the welding gun assembly (3) is arranged on each mounting frame (14).

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