Four-axis welding mechanism

Abstract

A four-axis welding mechanism is mainly used in the field of automobile body-in-white welding. The four-axis welding mechanism is composed of a three-axis dotting machine and a four-station rotary welding mechanism. The four-station rotary welding mechanism is installed on a vertical shaft of the three-shaft dotting machine, the three-shaft dotting machine can linearly move along the horizontal shaft, the vertical shaft and the vertical shaft, and the four-station rotary welding mechanism can rotate around the vertical shaft. The welding mechanism is mainly used for standard part welding of small workpieces on an automatic production line, can rapidly rotate by 90 degrees in an intermittent mode, forms cyclic actions of feeding, welding, detecting and discharging, can achieve rapid cyclic production, is high in universality, convenient to switch and good in flexibility, can be used in cooperation with multiple sets of welding equipment at the same time, and is suitable for large-scale production. The equipment utilization rate and the welding efficiency are high, the machining, manufacturing, maintaining and labor cost can be greatly reduced, potential safety hazards in the welding process are eliminated, and the welding positioning stability and the manufacturing quality are improved.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical manufacturing, in particular to a four-axis welding mechanism. Background Art

[0002] In the prior art, in the automated production of automobile body-in-white standard parts welding, a traditional production method is usually used in which a corresponding dedicated loading robot is used to load, weld, and unload parts. However, for a single small standard part, the robot intermediate conversion time of this production method is much longer than the welding time, and the utilization rate of the robot is low, which will greatly waste production and labor costs, high labor intensity, and low efficiency. Summary of the invention

[0003] In order to overcome the deficiencies of the prior art, the object of the present invention is to provide a four-axis welding mechanism to achieve the purpose of improving the welding efficiency of parts.

[0004] To achieve the above-mentioned purpose of the invention, the four-axis welding mechanism of the present invention is composed of a three-axis dotting machine and a four-station rotary welding mechanism; the four-station rotary welding mechanism is installed on the vertical axis of the three-axis dotting machine, the three-axis dotting machine can move linearly along the horizontal axis, vertical axis, and vertical axis, and the four-station rotary welding mechanism can rotate around the vertical axis.

[0005] Furthermore, three horizontal axis racks connected end to end are laid on the horizontal axis base of the horizontal axis, the horizontal axis slide rail is slidably connected to the slideways symmetrically laid on both sides of the horizontal axis base, the horizontal axis slide rail is connected and fixed to the horizontal axis rack, the horizontal axis rack and the horizontal axis gear are meshed with each other, the horizontal axis gear is connected to the output shaft of the horizontal axis servo motor, the vertical axis base is fixed to the horizontal axis slide rail by bolts, and the horizontal axis servo motor is installed on the vertical axis base; the horizontal axis servo motor drives the horizontal axis gear to rotate, and drives the vertical axis base on the horizontal axis slide rail to move along the horizontal axis direction through the horizontal axis rack.

[0006] Furthermore, a vertical axis rack is laid on the vertical axis base of the vertical axis, the vertical axis slide rail is slidably connected to the slideways symmetrically laid on both sides of the vertical axis base, the vertical axis slide rail is connected and fixed to the vertical axis rack, the vertical axis rack and the vertical axis gear are meshed with each other, the vertical axis gear is connected to the output shaft of the vertical axis servo motor, the vertical axis base is fixed to the vertical axis slide rail by bolts, and the vertical axis servo motor is installed on the vertical axis base; the vertical axis servo motor drives the vertical axis gear to rotate, and drives the vertical axis base to move along the vertical axis direction through the vertical axis rack.

[0007] Furthermore, the vertical axis slide rail of the vertical axis is slidably connected to the slideways symmetrically laid on both sides of the vertical axis base. A vertical axis servo motor is installed on the top of the vertical axis base. The rotating axis base is fixed to the vertical axis slide rail by bolts. The fixed end of the screw is connected to the vertical axis servo motor, and the movable side of the screw is connected to the rotating axis base; the vertical axis servo motor drives the screw to rotate, driving the rotating axis base to move along the vertical axis direction.

[0008] Furthermore, a qualified product slide is obliquely fixed on one side of the vertical axis base, and a failed product slide is obliquely fixed on the other side of the vertical axis base. A qualified product box and a failed product box are installed in front of the vertical axis base, respectively below the qualified product slide and the failed product slide.

[0009] Furthermore, the four-station rotary welding mechanism is fixed to the base plate by bolts, one end of the camera bracket is connected to the base plate, and the other end is located directly above the four-station rotary welding mechanism, and is connected to the fixed side of the gas-electric slip ring through bracket one, and the rotating side of the gas-electric slip ring is installed on the dividing plate of the four-station rotary welding mechanism, and the upper ends of the camera bracket are respectively equipped with a loading detection lighting, a loading detection camera, a unloading detection camera, and a unloading detection lighting. The control box is fixed on the dividing plate through an electric box bracket, and the solenoid valve is fixed on the side of the electric box bracket; four sets of clamps are evenly distributed on the dividing plate at 90 degrees, and the stepper motor is connected to the dividing plate by driving the cam divider.

[0010] Compared with the prior art, the present invention is mainly used for standard parts welding of small workpieces in automated production lines. It can quickly rotate 90 degrees intermittently to form a cyclic action of loading, welding, testing, and unloading, and can achieve rapid cyclic production. It has strong versatility, convenient switching, and good flexibility. A set of welding mechanisms can be used in conjunction with multiple sets of welding equipment at the same time, with high equipment utilization and welding efficiency. It can greatly reduce processing, manufacturing, maintenance, and labor costs, eliminate safety hazards in the welding process, and improve welding positioning stability and manufacturing quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural diagram of the present invention.

[0012] Figure 2 for Figure 1 A schematic diagram of the structure of a three-axis dotting machine.

[0013] Figure 3 for Figure 1 Supplementary view of the structural diagram of the three-axis dotting machine.

[0014] Figure 4 for Figure 1 A schematic diagram of the structure of a four-station rotary welding mechanism.

[0015] Figure 5 for Figure 4 Top view of the . DETAILED DESCRIPTION

[0016] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, the four-axis welding mechanism of the present invention is composed of a three-axis dotting machine 1 and a four-station rotary welding mechanism 2; the four-station rotary welding mechanism 2 is installed on the vertical axis of the three-axis dotting machine 1, the three-axis dotting machine 1 can move linearly along the horizontal axis, vertical axis, and vertical axis, and the four-station rotary welding mechanism 2 can rotate around the vertical axis.

[0017] Three horizontal axis racks 5 connected end to end are laid on the horizontal axis base 3 of the horizontal axis, the horizontal axis slide rail 4 is slidably connected to the slideways symmetrically laid on both sides of the horizontal axis base 3, the horizontal axis slide rail 4 is connected and fixed to the horizontal axis rack 5, the horizontal axis rack 5 and the horizontal axis gear 7 are meshed with each other, the horizontal axis gear 7 is connected to the output shaft of the horizontal axis servo motor 6, the vertical axis base 8 is fixed to the horizontal axis slide rail 4 by bolts, and the horizontal axis servo motor 6 is installed on the vertical axis base 8; the horizontal axis servo motor 6 drives the horizontal axis gear 7 to rotate, and drives the vertical axis base 8 on the horizontal axis slide rail 4 to move along the horizontal axis direction through the horizontal axis rack 5.

[0018] A vertical axis rack 10 is laid on the vertical axis base 8 of the vertical axis, the vertical axis slide rail 9 is slidably connected to the slideways symmetrically laid on both sides of the vertical axis base 8, the vertical axis slide rail 9 is connected and fixed to the vertical axis rack 10, the vertical axis rack 10 is meshed with the vertical axis gear 12, the vertical axis gear 12 is connected to the output shaft of the vertical axis servo motor 11, the vertical axis base 13 is fixed to the vertical axis slide rail 9 by bolts, and the vertical axis servo motor 11 is installed on the vertical axis base 13; the vertical axis servo motor 11 drives the vertical axis gear 12 to rotate, and drives the vertical axis base 13 to move along the vertical axis direction through the vertical axis rack 10.

[0019] The vertical axis slide rail 16 of the vertical axis is slidably connected to the slideways symmetrically laid on both sides of the vertical axis base 13. A vertical axis servo motor 14 is installed on the top of the vertical axis base 13. The rotating axis base 17 is fixed to the vertical axis slide rail 16 by bolts. The fixed end of the lead screw 15 is connected to the vertical axis servo motor 14, and the movable side of the lead screw 15 is connected to the rotating axis base 17; the vertical axis servo motor 14 drives the lead screw 15 to rotate, driving the rotating axis base 17 to move along the vertical axis direction.

[0020] A qualified product chute 18 is fixed obliquely on the left side of the vertical axis base 8, and a failed product chute 19 is fixed obliquely on the right side of the vertical axis base 8. A qualified product box 20 and a failed product box 21 are installed in front of the vertical axis base 8, respectively below the qualified product chute 18 and the failed product chute 19.

[0021] The four-station rotary welding mechanism 2 is fixed to the bottom plate 35 by bolts, one end of the camera bracket 31 is connected to the bottom plate 35, and the other end is located just above the four-station rotary welding mechanism 2, and is connected to the fixed side of the gas-electric slip ring 23 through the bracket 1 33. The rotating side of the gas-electric slip ring 23 is installed on the dividing plate 36 of the four-station rotary welding mechanism 2, and the fixed side and rotating side of the gas-electric slip ring 23 are respectively equipped with gas-electric modules. The external power supply and the main gas source are respectively connected to the control box 29 and the solenoid valve 30 through the gas-electric modules inside the fixed side and rotating side of the gas-electric slip ring 23, to ensure The rotating side of the air-slip ring 23 rotates with the indexing plate 36, and can provide power and gas source for the fixture 24 on the indexing plate 36; the upper ends of the camera bracket 31 are respectively installed with a loading detection lighting lamp 25, a loading detection camera 26, a unloading detection camera 27, and an unloading detection lighting lamp 28; the control box 29 is fixed on the indexing plate 36 through the electric box bracket 34, and the solenoid valve 30 is fixed on the side of the electric box bracket 34; four sets of fixtures 24 are evenly distributed on the indexing plate 36 at 90 degrees, and the stepper motor 32 is connected to the indexing plate 36 through the driving cam divider 22.

[0022] During operation, the three-axis spotting machine 1 moves along the horizontal axis, the vertical axis and the vertical axis to send the four-station rotary welding mechanism 2 to the set position. The workpiece is loaded at the loading position 37, and the clamp 24 clamps the workpiece. After the loading detection camera 26 detects, if the conditions are not met, the clamp 24 is opened, and the workpiece falls to the unqualified product slide 19 due to its own weight, and flows into the unqualified product box 21 along the unqualified product slide 19; if the conditions are met, the stepper motor 32 drives the cam divider 22 to rotate intermittently counterclockwise, rotates to the welding position 38 for welding, and after welding, rotates to the detection position 39 for detection. When the workpiece is detected as a qualified product, the clamp 24 is opened, and the workpiece falls to the qualified product slide 18 due to its own weight, and flows into the qualified product box 20 along the qualified product slide 18. When the workpiece is detected as a defective product, it continues to rotate to the unloading position 40, the clamp 24 is opened, and the workpiece falls to the unqualified product slide 19 due to its own weight, and flows into the unqualified product box 21 along the unqualified product slide 19; continue to load, and perform rotary welding in a rapid cycle. .

Claims

1. A four-axis welding mechanism, characterized in that: The four-axis welding mechanism is composed of a three-axis dotting machine (1) and a four-station rotary welding mechanism (2); the four-station rotary welding mechanism (2) is installed on the vertical axis of the three-axis dotting machine (1); the three-axis dotting machine (1) can move along a horizontal axis, a vertical axis, and a vertical axis in a straight line; and the four-station rotary welding mechanism (2) can rotate around the vertical axis.

2. A four-axis welding mechanism according to claim 1, characterized in that: The horizontal axis base (3) of the horizontal axis is provided with three horizontal axis racks (5) connected end to end, the horizontal axis slide rail (4) is slidably connected to the slideways symmetrically laid on both sides of the horizontal axis base (3), the horizontal axis slide rail (4) is connected and fixed to the horizontal axis rack (5), the horizontal axis rack (5) and the horizontal axis gear (7) are meshed with each other, the horizontal axis gear (7) is connected to the output shaft of the horizontal axis servo motor (6), the vertical axis base (8) is fixed to the horizontal axis slide rail (4) by bolts, and the horizontal axis servo motor (6) is installed on the vertical axis base (8); the horizontal axis servo motor (6) drives the horizontal axis gear (7) to rotate, and drives the vertical axis base (8) on the horizontal axis slide rail (4) to move along the horizontal axis direction through the horizontal axis rack (5).

3. A four-axis welding mechanism according to claim 1, characterized in that: A vertical axis rack (10) is laid on the vertical axis base (8) of the vertical axis, the vertical axis slide rail (9) is slidably connected to the slideways symmetrically laid on both sides of the vertical axis base (8), the vertical axis slide rail (9) is connected and fixed to the vertical axis rack (10), the vertical axis rack (10) and the vertical axis gear (12) are meshed with each other, the vertical axis gear (12) is connected to the output shaft of the vertical axis servo motor (11), the vertical axis base (13) is fixed to the vertical axis slide rail (9) by bolts, and the vertical axis servo motor (11) is installed on the vertical axis base (13); the vertical axis servo motor (11) drives the vertical axis gear (12) to rotate, and drives the vertical axis base (13) to move along the vertical axis direction through the vertical axis rack (10).

4. A four-axis welding mechanism according to claim 1, characterized in that: The vertical axis slide rail (16) of the vertical axis is slidably connected to slideways symmetrically laid on both sides of the vertical axis base (13); a vertical axis servo motor (14) is installed on the top of the vertical axis base (13); the rotating axis base (17) is fixed to the vertical axis slide rail (16) by bolts; the fixed end of the lead screw (15) is connected to the vertical axis servo motor (14); the movable side of the lead screw (15) is connected to the rotating axis base (17); the vertical axis servo motor (14) drives the lead screw (15) to rotate, thereby driving the rotating axis base (17) to move along the vertical axis direction.

5. A four-axis welding mechanism according to claim 2, characterized in that: A qualified product slideway (18) is fixed obliquely on one side of the vertical axis base (8), and a non-qualified product slideway (19) is fixed obliquely on the other side of the vertical axis base (8). A qualified product material box (20) and a non-qualified product material box (21) are installed in front of the vertical axis base (8) and are located below the qualified product slideway (18) and the non-qualified product slideway (19), respectively.

6. A four-axis welding mechanism according to claim 1, characterized in that: The four-station rotary welding mechanism (2) is fixed to a bottom plate (35) by means of bolts. One end of the camera bracket (31) is connected to the bottom plate (35), and the other end is located directly above the four-station rotary welding mechanism (2) and is connected to the fixed side of the gas-electric slip ring (23) via bracket 1 (33). The rotating side of the gas-electric slip ring (23) is mounted on a dividing plate (36) of the four-station rotary welding mechanism (2). The upper ends of the camera bracket (31) are respectively mounted with upper A material detection lighting lamp (25), a material loading detection camera (26), a material unloading detection camera (27), a material unloading detection lighting lamp (28), a control box (29) is fixed on the indexing plate (36) through an electric box bracket (34), and a solenoid valve (30) is fixed on the side of the electric box bracket (34); four sets of clamps (24) are evenly distributed on the indexing plate (36) at 90 degrees, and a stepping motor (32) is connected to the indexing plate (36) through a driving cam divider (22).

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