A sputter-proof automatic welding device

Abstract

The present invention relates to the field of welding devices, and specifically to an anti-sputtering automatic welding device, which comprises: a turntable, which is rotatably arranged on a welding gun mounting seat, and a rotating mechanism for driving the turntable to rotate is arranged on the welding gun mounting seat; a liquid spraying mechanism, which is arranged on the end face of the turntable facing the welding gun, and the liquid spraying mechanism sprays liquid in a fan-shaped manner to both sides of the weld, and the liquid spraying mechanism can rotate and retract; and a control system, which is controlled and connected with a welding robot, a rotating mechanism and a liquid spraying mechanism. In the present invention, the liquid spraying mechanism sprays welding anti-splashing liquid around the welding point and on both sides of the weld, thereby achieving the purpose of anti-sputtering. The liquid spraying mechanism is integrated near the welding gun, has a compact structure, can simultaneously perform welding and spraying of anti-splashing liquid, and has high welding efficiency.

Description

Technical Field

[0001] The invention relates to the field of welding devices, and in particular to an anti-sputtering automatic welding device. Background Art

[0002] During the production process of the stone engraving machine, the bed and some structural parts need to be welded and fixed. In order to improve production efficiency and ensure welding consistency, automatic welding equipment is usually used to avoid the problems that are prone to manual welding. Welding methods usually include gas shielded welding, argon arc welding or arc welding. During the welding process, welding slag will sputter, causing a large amount of welding slag to adhere to the non-welding area near the weld, which not only affects the product quality, but also generates a large workload when dealing with the welding slag in the non-welding area.

[0003] A Chinese patent with announcement number CN114160927B discloses an anti-sputtering automatic welding device, which can adjust the wire feeding length according to the feeding amount of the wire feeding mechanism, effectively improving the flexibility of the wire feeding mechanism in controlling the wire feeding amount, and improving the problem of weld spot spattering by adjusting the wire feeding length when the welding device body performs welding on different workpieces, thereby reducing the spattering of the weld spot and effectively improving the welding quality of the welding device body and the service life of the welding device body.

[0004] However, the above-mentioned disclosed solutions have the following shortcomings: by controlling the wire feeding length, the generation of spatter can only be suppressed to a certain extent, and the spatter cannot be prevented from spattering to the vicinity of the weld, and the spattered welding slag still needs to be cleaned subsequently. Summary of the invention

[0005] The purpose of the present invention is to propose an anti-sputtering automatic welding device to solve the problem in the background technology that welding slag cannot be prevented from splashing and adhering to the area near the weld.

[0006] On the one hand, the present invention provides an anti-sputtering automatic welding device, comprising a welding robot, a welding gun mounting seat is arranged on the front end movable arm of the welding robot, and a welding gun is arranged on the welding gun mounting seat; and further comprising:

[0007] The turntable is rotatably arranged on the welding gun mounting seat, and the welding gun mounting seat is provided with a rotating mechanism for driving the turntable to rotate;

[0008] The liquid spraying mechanism is arranged on the end face of the turntable facing the welding gun. The liquid spraying mechanism sprays liquid in a fan-shaped manner toward both sides of the weld. The liquid spraying mechanism can rotate and retract. The retraction is used to change the distance between the liquid spraying point and the weld and the welding point. When welding a long weld, the liquid spraying mechanism retracts to the weld, and as the welding proceeds, the anti-splash liquid is sprayed in front of the welding position. When spot welding is required, the bottom of the liquid spraying mechanism extends to the spot welding position, and then sprays liquid and rotates 180 degrees, ends the spraying and retracts to reset;

[0009] And a control system, the control system is controlled and connected with the welding robot, the rotating mechanism and the liquid spraying mechanism.

[0010] Preferably, the rotating mechanism includes an annular groove arranged on the inner circumferential wall of the turntable, an annular gear ring arranged on the circumferential wall of the annular groove, an encoder motor a arranged on the welding gun mounting seat, and a gear arranged on the output shaft of the encoder motor a, and the gear is meshed with the annular gear ring.

[0011] Preferably, the liquid spraying mechanism comprises a power assembly and a spray assembly, wherein the spray assembly is arranged on the power assembly, and the power assembly is extended and retracted to drive the spray assembly to move, and the power assembly is rotated to drive the spray assembly to rotate.

[0012] Preferably, the power assembly includes a telescopic device arranged on the turntable, a motor protective cover arranged at the telescopic end of the telescopic device, an encoder motor b arranged in the motor protective cover, and a splash-proof liquid transfer box arranged at the end of the output shaft of the encoder motor b.

[0013] Preferably, the spray assembly includes two V-shaped mounting tubes arranged at the bottom of the anti-splash liquid transfer box, two fan-shaped spray nozzles arranged at the bottom of the two mounting tubes, and a weld plug rod arranged at the bottom of the two fan-shaped spray nozzles, the V-shaped openings on the two fan-shaped spray nozzles are respectively facing the two sides of the weld, and an anti-splash liquid hose is arranged on the anti-splash liquid transfer box, and the anti-splash liquid hose is connected to an external welding anti-splash liquid high-pressure supply device.

[0014] Preferably, a baffle is provided at the bottom of the motor protective cover, the baffle forms an acute angle with the axis of the telescopic device, an arc-shaped edge is provided at the bottom of the baffle, and the bottom of the arc-shaped edge is higher than the weld rod.

[0015] Preferably, a barrel body is rotatably arranged on the outer wall of the motor protective cover, the end of the output shaft passes through the motor protective cover and is connected to the outer wall of the barrel bottom of the barrel body, a sliding column is slidably arranged in the barrel body, a spring is arranged between the sliding column and the bottom of the barrel body, and an anti-splash liquid transfer box is arranged at the bottom of the sliding column.

[0016] On the other hand, the present invention provides an anti-sputtering automatic welding method, comprising the following steps:

[0017] S1. Adjust the turntable to the required angle through the rotating mechanism;

[0018] S2. Before spot welding, the bottom of the liquid spraying mechanism extends to the spot welding position, then sprays the liquid and rotates 180 degrees, ends the spraying and retracts to reset, and then performs spot welding;

[0019] S3. Before welding a long weld, the liquid spraying mechanism first moves to the welding starting position, then extends out to rest against the weld, and then starts to move for welding and liquid spraying. After welding is completed, the liquid spraying mechanism is reset.

[0020] Compared with the prior art, the present invention has the following beneficial technical effects: by spraying the anti-splashing liquid on the surrounding of the welding point and both sides of the weld through the liquid spraying mechanism, the spatter generated during welding will be isolated by the protective layer by forming a protective layer on the non-welding area of ​​the workpiece surface, so that it cannot adhere to the workpiece surface in the non-welding area, and the spatter can be discharged by high-pressure blowing or tapping, thereby achieving the purpose of anti-sputtering. In addition, the liquid spraying mechanism is integrated near the welding gun, with a compact structure, and can simultaneously perform welding and spraying of anti-splashing liquid, with high welding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of the structure of an embodiment of the present invention;

[0022] Figure 2 for Figure 1 Schematic diagram of some structures;

[0023] Figure 3 is a schematic diagram of the rotating mechanism of the turntable;

[0024] Figure 4 It is a structural schematic diagram of the liquid spraying mechanism;

[0025] Figure 5 for Figure 4 Schematic diagram of a partial structure cutaway;

[0026] Figure 6 for Figure 5 A is an enlarged schematic diagram;

[0027] Figure 7 Schematic diagram of the structure of the baffle.

[0028] Attached figures: 1. base; 2. welding robot; 3. welding gun; 4. welding gun mounting base; 5. turntable; 6. annular groove; 7. annular gear ring; 8. encoder motor a; 9. gear; 10. protective cover; 11. telescopic device; 12. motor protective cover; 13. encoder motor b; 14. output shaft; 15. barrel; 16. sliding column; 17. guide rod; 18. spring; 19. anti-splash liquid transfer box; 20. anti-splash liquid hose; 21. mounting tube; 22. fan-shaped spray nozzle; 23. weld rod; 24. V-shaped mouth; 25. baffle; 26. mounting plate; 27. V-shaped guide groove; 28. arc edge. DETAILED DESCRIPTION

[0029] Embodiment 1, as Figure 1-Figure 3As shown, the present invention proposes an anti-sputtering automatic welding device, including a welding robot 2, a welding gun mounting seat 4 is arranged on the front end movable arm of the welding robot 2, a welding gun 3 is arranged on the welding gun mounting seat 4, and a base 1 is arranged at the bottom of the welding robot 2 to fix the welding robot 2, and the base 1 is fixed to the ground or other mounting surface by bolt connection; and also includes:

[0030] The turntable 5 is rotatably arranged on the welding gun mounting seat 4, and a rotating mechanism for driving the turntable 5 to rotate is arranged on the welding gun mounting seat 4; the rotating mechanism includes an annular groove 6 arranged on the inner peripheral wall of the turntable 5, an annular gear ring 7 arranged on the peripheral wall of the annular groove 6, an encoder motor a8 arranged on the welding gun mounting seat 4, and a gear 9 arranged on the output shaft of the encoder motor a8, and the gear 9 is meshed with the annular gear ring 7; the control system is connected to the encoder motor a8, and the rotation angle of the encoder motor a8 is controlled by the control system, and the required rotation angle of the turntable 5 can be controlled by the transmission ratio of the gear 9 and the annular gear ring 7. In most cases, the angle of the turntable 5 is pre-set, and the angle adjustment of the turntable 5 may only be involved when the welding parameters are changed;

[0031] The liquid spraying mechanism is arranged on the end face of the rotating disk 5 facing the welding gun 3. The liquid spraying mechanism sprays liquid in a fan-shaped manner toward both sides of the weld. The liquid spraying mechanism can rotate and retract. The retraction is used to change the distance between the liquid spraying point and the weld and the welding spot. When welding a long weld, the liquid spraying mechanism retracts to the weld. As welding proceeds, the anti-splashing liquid is sprayed in front of the welding position. The anti-splashing liquid is sprayed in front of the welding to form a protective layer on the workpiece to prevent welding slag from adhering to the workpiece. A very small part of the anti-splashing liquid will fall into the weld and quickly vaporize and evaporate under the high temperature of the rear welding, which will not affect the welding. When spot welding is required, the bottom of the liquid spraying mechanism extends to the spot welding position, and then sprays liquid and rotates 180 degrees, ends the spraying and retracts to reset. The fan-shaped sprays on both sides complete the liquid spraying work around the welding spot after rotating 180 degrees.

[0032] And a control system, the control system is connected with the welding robot 2, the rotating mechanism and the liquid spraying mechanism.

[0033] In this embodiment, when spot welding is performed, anti-splash liquid is sprayed on the surrounding positions of the spot welding through the liquid spray structure. When welding the weld, the anti-splash liquid is sprayed in front of the welding position while welding. By spraying welding anti-splash agent around the welding position, it is possible to prevent welding slag from adhering to the surrounding area of ​​the welding, thereby achieving the purpose of anti-splashing.

[0034] Embodiment 2, as Figure 2 As shown, the present invention proposes an anti-sputtering automatic welding device. Compared with the first embodiment, this embodiment introduces two components that constitute the liquid spraying mechanism.

[0035] The liquid spraying mechanism comprises a power assembly and a spray assembly. The spray assembly is arranged on the power assembly. The power assembly is extended and retracted to drive the spray assembly to move, and the power assembly is rotated to drive the spray assembly to rotate.

[0036] Embodiment three, as Figure 4 and Figure 5 As shown, the present invention proposes an anti-sputtering automatic welding device. Compared with the second embodiment, this embodiment introduces the structure of the power component in detail.

[0037] The power assembly includes a telescopic device 11 arranged on the turntable 5, a motor protective cover 12 arranged at the telescopic end of the telescopic device 11, an encoder motor b13 arranged in the motor protective cover 12, and an anti-splash liquid transfer box 19 arranged at the end of the output shaft 14 of the encoder motor b13; in order to protect the telescopic device 11, a protective cover 10 is arranged on the turntable 5, the telescopic device 11 is located in the protective cover 10, and only the telescopic rod extends from the protective cover 10. The control system is controlled and connected to the telescopic device 11 and the encoder motor b13. When spraying the welding anti-splash agent before spot welding, the encoder motor b13 drives the spray assembly to rotate one hundred and eighty degrees to form a protective layer on the workpiece surface around the welding point. When welding a long weld, the encoder motor b13 does not work, and the spray assembly is driven to stick to the weld and spray liquid on both sides of the weld through the extension of the telescopic device 11.

[0038] A barrel body 15 is rotatably set on the outer wall of the motor protective cover 12, the end of the output shaft 14 passes through the motor protective cover 12 and is connected to the outer wall of the barrel bottom of the barrel body 15, a sliding column 16 is slidably set in the barrel body 15, a spring 18 is set between the sliding column 16 and the bottom of the barrel body 15, and an anti-splash liquid transfer box 19 is set at the bottom of the sliding column 16; in order to further improve the stability, a guide rod 17 is set on the inner wall of the barrel bottom of the barrel body 15, and a guide hole for inserting the guide rod 17 is set on the sliding column 16. When welding spraying is performed, the sliding column 16 will be squeezed inward for a short distance, and the spring 18 is in a compressed state, so that the spray assembly can always stick to the surface of the workpiece, even if the weld rod 23 can always be located in the weld. It is mainly suitable for non-planar welds, which improves the scope of application.

[0039] Embodiment 4, as Figure 6 and Figure 7 As shown, the present invention proposes an anti-sputtering automatic welding device. Compared with the third embodiment, this embodiment introduces the structure of the spray assembly in detail.

[0040] The spray assembly includes two V-shaped mounting tubes 21 arranged at the bottom of the anti-splash liquid transfer box 19, two fan-shaped spray nozzles 22 arranged at the bottom of the two mounting tubes 21, and a weld plug rod 23 arranged at the bottom of the two fan-shaped spray nozzles 22. The V-shaped openings 24 on the two fan-shaped spray nozzles 22 face the two sides of the weld respectively. The anti-splash liquid transfer box 19 is provided with an anti-splash liquid hose 20, which is connected to the external welding anti-splash liquid high-pressure supply device; in the actual welding process, the width of the weld is about ten millimeters. , while the diameter of the general cylindrical fan-shaped spray nozzle 22 is greater than ten millimeters, for this reason, two fan-shaped spray nozzles 22 are specially designed for use together. First, the two fan-shaped spray nozzles 22 are distributed at an acute angle up and down, and the two fan-shaped spray nozzles 22 are also provided with mutually avoiding fitting surfaces, so that the two fan-shaped spray nozzles 22 can be closer. Secondly, the V-shaped openings 24 of the two fan-shaped spray nozzles 22 are both opened at the bottom of the nozzle, and the two V-shaped openings 24 are wide-angle, which is convenient for spraying welding anti-splash liquid to both sides of the weld near and far at the same time. The specially designed weld plug 23 is located in the weld, and the weld plug 23 can be used to break up the large particles of droplets in the weld and distribute them in the weld in a smearing manner, which is convenient for the high temperature of the weld to quickly vaporize and evaporate, and prevent the presence of more welding anti-splash agents in the weld to generate welding bubbles.

[0041] Furthermore, a baffle 25 is provided at the bottom of the motor protection cover 12, and the baffle 25 forms an acute angle with the axis of the telescopic device 11. An arc-shaped edge 28 is provided at the bottom of the baffle 25, and the bottom of the arc-shaped edge 28 is higher than the weld plug rod 23; during spot welding, the arc-shaped edge 28 and the weld plug rod 23 are both located at a large distance above the welding position, which can prevent welding slag from splashing and adhering to the spray component. During long weld welding, the baffle 25 blocks the spray component and the welding gun 3, respectively, and can prevent welding spatter from directly splashing and contacting the spray component. The spray component can also be protected because the baffle 25 needs to directly contact the splashed welding slag. , welding slag will adhere to the baffle 25, and the baffle 25 needs to be cleaned or replaced every once in a while, so a mounting plate 26 is set at the bottom of the baffle 25, and a mounting hole is set on the mounting plate 26, and the mounting plate 26 is connected to the motor protection cover 12 by bolts or screws, so as to facilitate the quick disassembly and assembly of the baffle 25; in addition, in order to prevent the welding anti-splash liquid from flowing into the weld of the baffle 25, an inverted V-shaped guide groove 27 is set on the end face of the baffle 25 facing the spray assembly, and a plurality of V-shaped guide grooves 27 are arranged side by side, and the anti-splash liquid on the baffle 25 is guided to drip to both sides of the weld through the V-shaped guide grooves 27.

[0042] Embodiment 5, an anti-sputtering automatic welding method proposed by the present invention, using the anti-sputtering automatic welding device of embodiment 4, specifically comprises the following steps:

[0043] S1. Adjust the turntable 5 to a desired angle through the rotating mechanism. The angle of the turntable 5 needs to ensure that the middle position of the weld rod 23 is just against the spot welding position when the telescopic device 11 is extended. It needs to ensure that when welding a long weld, the weld rod 23 is just inserted into the weld.

[0044] S2. Before spot welding, the bottom of the liquid spraying mechanism extends to the spot welding position, then sprays liquid and rotates 180 degrees, stops spraying and retracts to reset, and then welds the spot; specifically, the telescopic device 11 is extended, the middle position of the weld plug rod 23 is just against the spot welding position, the spraying is turned on, the encoder motor b13 drives the barrel 15 to rotate 180 degrees, and the two fan-shaped spray nozzles 22 complete the liquid spraying on the surface around the welding point, stop spraying, and then the encoder motor b13 rotates in the opposite direction to drive the barrel 15 to reset;

[0045] S3. Before welding a long weld, the liquid spraying mechanism first moves to the welding starting position, then extends out to rest against the weld, and then starts to move for welding and liquid spraying. After welding is completed, the liquid spraying mechanism is reset. Specifically, the telescopic device 11 is extended, the weld rod 23 is just located in the weld, and welding and liquid spraying are started. Liquid spraying is performed while welding. After welding is completed, liquid spraying is stopped, the welding gun 3 is away from the workpiece, and the telescopic device 11 is reset.

[0046] In summary, when the present invention is in use, the turntable 5 is adjusted to the required angle through the rotating mechanism. Before spot welding, the telescopic device 11 is extended, and the middle position of the weld rod 23 is just against the spot welding position. The spray is turned on, and the encoder motor b13 drives the barrel body 15 to rotate one hundred and eighty degrees. The two fan-shaped spray nozzles 22 are used to spray liquid on the surface around the weld point, and the spraying is stopped. Then the encoder motor b13 rotates in the opposite direction to drive the barrel body 15 to reset, and then electric welding is performed through the welding gun 3; before welding a long weld, the telescopic device 11 is extended, and the weld rod 23 is just located in the weld, and welding and spraying are started. Liquid is sprayed while welding, and liquid spraying is stopped after welding. The welding gun 3 is away from the workpiece, and the telescopic device 11 is reset.

[0047] In the present invention, the liquid spraying mechanism sprays the welding anti-splashing liquid around the welding point and on both sides of the weld, and forms a protective layer on the non-welding area on the surface of the workpiece. The spatter generated during welding will be isolated by the protective layer, so that it cannot adhere to the surface of the workpiece in the non-welding area. The spatter can be discharged by high-pressure blowing or tapping, thereby achieving the purpose of anti-splashing. The liquid spraying mechanism is integrated near the welding gun 3, with a compact structure, and can simultaneously perform welding and spraying of the anti-splashing liquid, with high welding efficiency.

[0048] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge scope of technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. An anti-sputtering automatic welding device, comprising a welding robot (2), a welding gun mounting seat (4) being arranged on the frontmost movable arm of the welding robot (2), and a welding gun (3) being arranged on the welding gun mounting seat (4); characterized in that: Also includes: A turntable (5) is rotatably mounted on a welding gun mounting seat (4); a rotating mechanism for driving the turntable (5) to rotate is disposed on the welding gun mounting seat (4); A liquid spraying mechanism is arranged on the end surface of the rotating disk (5) facing the welding gun (3); and a control system, the control system being control-connected to the welding robot (2), the rotating mechanism, and the liquid spraying mechanism; The liquid spraying mechanism comprises a power assembly and a spray assembly, wherein the spray assembly is arranged on the power assembly, the power assembly is extended and retracted to drive the spray assembly to move, and the power assembly is rotated to drive the spray assembly to rotate; the power assembly comprises a telescopic device (11) arranged on a turntable (5), a motor protective cover (12) arranged at the telescopic end of the telescopic device (11), an encoder motor b (13) arranged in the motor protective cover (12), and a splash-proof liquid transfer box (19) arranged at the end of an output shaft (14) of the encoder motor b (13); The spray assembly comprises two V-shaped mounting tubes (21) arranged at the bottom of the anti-splash liquid transfer box (19), two fan-shaped spray nozzles (22) arranged at the bottom of the two mounting tubes (21), and a weld plug rod (23) arranged at the bottom of the two fan-shaped spray nozzles (22), the V-shaped openings (24) on the two fan-shaped spray nozzles (22) facing the two sides of the weld respectively, and an anti-splash liquid hose (20) is arranged on the anti-splash liquid transfer box (19).

2. The anti-sputtering automatic welding device according to claim 1, characterized in that: The rotating mechanism comprises an annular groove (6) arranged on the inner peripheral wall of the rotating disk (5), an annular gear ring (7) arranged on the peripheral wall of the annular groove (6), an encoder motor a (8) arranged on the welding gun mounting seat (4), and a gear (9) arranged on the output shaft of the encoder motor a (8), the gear (9) being meshed with the annular gear ring (7).

3. The anti-sputtering automatic welding device according to claim 1, characterized in that: A baffle (25) is provided at the bottom of the motor protection cover (12), the baffle (25) forms an acute angle with the axis of the telescopic device (11), and an arcuate edge (28) is provided at the bottom of the baffle (25), the bottom of the arcuate edge (28) being higher than the weld plug rod (23).

4. The anti-sputtering automatic welding device according to claim 1, characterized in that: A barrel body (15) is rotatably arranged on the outer wall of the motor protection cover (12), the end of the output shaft (14) passes through the motor protection cover (12) and is connected to the outer wall of the barrel bottom of the barrel body (15), a sliding column (16) is slidably arranged in the barrel body (15), a spring (18) is arranged between the sliding column (16) and the bottom of the barrel body (15), and an anti-splash liquid transfer box (19) is arranged at the bottom of the sliding column (16).

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