A programmable automatic plane welding device

Abstract

The present invention relates to the technical field of welding equipment, and in particular to a programmable automatic plane welding device; comprising a programmable two-dimensional driver, the two-dimensional driver comprising a ground rail, a slide slidably mounted on the ground rail, a PLC controller mounted on the slide, and an arm mounted slidably on the slide; further comprising a welding decontamination mechanism, the welding decontamination mechanism comprising a storage tank, a gas supply pipeline, a welding machine, a lifting slide mounted on the arm, a cantilever arm mounted on the lifting slide, a welding gun, and a decontamination and dust suction assembly, the storage tank and the welding machine are both mounted on the slide, the welding gun and the decontamination and dust suction assembly are both mounted on the cantilever arm; the decontamination and dust suction assembly comprises a venturi tube fixedly mounted on the cantilever arm, a filtering dust suction component, a decontamination component, and a flow distribution component. It can utilize the carbon dioxide outlet pressure to effectively remove solder particle residues, smoke attached to the surface of a planar workpiece, and scattered smoke, thereby improving welding quality.

Description

Technical Field

[0001] The invention relates to the technical field of welding equipment, in particular to a programmable automatic plane welding device. Background Art

[0002] As we all know, with the development of science and technology, welding equipment is becoming more and more intelligent; by controlling multi-axis robotic arms or multi-dimensional drives (multi-axis robotic arms, multi-dimensional mechanical slides) through a programmable PLC central controller, welding tasks with various weld trajectories can be completed.

[0003] For example, Chinese utility model patent CN217167130U discloses a programmable planar welding robot, the welding gun of which can move with five degrees of freedom on the workbench, can weld a variety of parts and welds, is easy to use, has good welding effect and high efficiency.

[0004] However, the inventors of the present invention have found that the welding speed is low and the weld quality is poor when using wire arc welding for flat welds due to the influence of factors such as the surrounding air. For this reason, carbon dioxide shielded welding is often used. However, during carbon dioxide shielded welding, the outlet pressure of carbon dioxide is high and it needs to be reduced pressure by a pressure reducing device. In addition, molten solder is prone to splashing, and a lot of smoke is generated after the solder is vaporized during the welding operation. This part of the molten solder is quickly cooled and solidified and adheres to the weld together with the smoke. The weld often needs to go through multiple layers of welding, and the smoke and the solidified granular solder are between the two weld layers, which has a great impact on the weld quality. Summary of the invention

[0005] In view of the deficiencies of the prior art, the present invention provides a programmable automatic flat welding device which can utilize the carbon dioxide outlet pressure to effectively remove solder particle residues, smoke attached to the flat workpiece surface and scattered smoke, thereby improving welding quality.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a programmable automatic plane welding device, comprising a programmable two-dimensional driver, the two-dimensional driver comprising a ground rail, a slide slidably mounted on the ground rail, a PLC controller mounted on the slide, and an arm slidably mounted on the slide, the slide being mounted with a first driver and a second driver, the first driver being used to drive the slide to move, and the second driver being used to drive the arm to move; further comprising a welding decontamination mechanism, the welding decontamination mechanism comprising a storage tank, an air supply pipeline, a welding machine, a lifting slide mounted on the arm, a cantilever arm mounted on the lifting slide, a welding gun, and a decontamination and dust collection assembly, the storage tank and the welding machine being both mounted on the slide, and the welding gun and the decontamination and dust collection assembly being both mounted on the cantilever arm;

[0007] The dirt removal and dust suction assembly includes a venturi tube fixedly mounted on the cantilever arm, a filtering dust suction component, a dirt removal component and a flow distribution component. The filtering dust suction component includes a dust suction pipe and a filter cartridge mounted on the dust suction pipe. One end of the dust suction pipe extends above the welding end of the welding gun, and the other end of the dust suction pipe extends into the middle of the throat of the venturi tube.

[0008] The dirt removal component includes an impeller rotatably mounted on the outlet end of the Venturi tube and a polishing component fixedly mounted on the impeller. The storage tank and the Venturi tube are connected via an air supply pipe. The flow distribution component includes a semi-annular air distribution pipe connected to the outlet end of the Venturi tube and a plurality of outlet holes evenly distributed on the inner wall of the semi-annular air distribution pipe.

[0009] Preferably, it also includes a diverter pipe, and a synchronous flow equalizer is installed on the welding gun. The synchronous flow equalizer includes an air inlet nozzle and a flow equalizing gas distribution component rotatably installed at the outlet end of the air inlet nozzle. One end of the diverter pipe is connected to the air supply pipeline, and the other end of the diverter pipe is connected to the inlet end of the air inlet nozzle. The synchronous flow equalizer includes a rotating nozzle rotatably installed at the outlet end of the air inlet nozzle and a synchronous transmission member.

[0010] Preferably, a pressure reducing valve is installed on the shunt pipe.

[0011] The synchronous transmission member includes a mounting frame fixedly connected to the air inlet nozzle, two clamping wheels rotatably mounted on the mounting frame, a rotating shaft rotatably mounted on the mounting frame, a first bevel gear fixedly mounted on the rotating shaft, a second bevel gear fixedly connected to one set of clamping wheels, a driving gear fixedly mounted on the rotating shaft, and a gear ring fixedly mounted on the rotating nozzle, the first bevel gear meshes with the second bevel gear, the driving gear meshes with the gear ring, the middle parts of the air inlet nozzle and the rotating nozzle are both provided with a wire supply channel allowing welding wire to pass through, and the rotating nozzle is provided with an air supply hole connected to the inside of the air inlet nozzle; further, the outlet end of the air supply hole faces the central axis of the welding wire; the clamping wheels are each provided with an annular groove that fits the outer diameter of the welding wire.

[0012] Preferably, a dust hood is installed at the inlet end of the dust suction pipe, the air inlet nozzle is rotatably installed on the welding gun, and the dust hood is provided with an opening groove that fits with the air inlet nozzle; further, the air inlet nozzle is inserted into the opening groove, and the size of the opening groove is larger than the outer size of the air inlet nozzle; the diverter pipe adopts a flexible plastic tube.

[0013] Preferably, an auxiliary wire feeding mechanism is installed on the cantilever arm, and the auxiliary wire feeding mechanism includes two fixed wheels rotatably installed on the cantilever arm, a guide cylinder located between the two fixed wheels, two sliders installed on the cantilever arm for sliding up and down, a screw rod providing power for the sliders to slide up and down, a pressure wheel rotatably installed on the slider, and a synchronous driver providing power for the rotation of the two fixed wheels; further, the screw rod is screwed on the cantilever arm, and the screw rod is rotatably connected to the slider; the synchronous driver includes a motor and a transmission gear assembly, and the motor provides power for the rotation of the two fixed wheels through the transmission gear assembly; the synchronous driver can also use a motor and a synchronous belt or a synchronous chain, and the motor provides power for the rotation of the two fixed wheels through the synchronous belt or the synchronous chain.

[0014] Preferably, a rotating frame is rotatably mounted on the cantilever arm, the dirt removal and dust suction assembly is fixedly mounted on the rotating frame, and a stepper motor for providing power for the rotation of the rotating frame is mounted on the cantilever arm; further, the stepper motor is coupled to a PLC controller, and the stepper motor has a built-in brake.

[0015] Preferably, a slag collecting cover is detachably mounted on the bottom outlet end of the venturi tube, a through opening for allowing the grinding piece to pass through is provided in the middle of the slag collecting cover, and an annular conical slope protrusion is provided around the through opening.

[0016] Furthermore, an annular gap of at least 5 cm is left between the inner diameter of the through-hole and the outer diameter of the grinding piece; and the slag collecting cover is threadedly connected to the bottom of the venturi tube.

[0017] Preferably, a brush ring is provided at the bottom of the slag collecting cover.

[0018] Preferably, the filter cartridge is detachably mounted on the air supply pipe; further, the filter cartridge is socket-connected or threadedly connected to the air supply pipe.

[0019] Compared with the prior art, the present invention provides a programmable automatic plane welding device, which has the following beneficial effects:

[0020] The programmable automatic plane welding device drives the welding gun on the cantilever arm to move in a two-dimensional plane through a two-dimensional driver to achieve welding of plane welds. When performing multi-layer welding of welds, the dirt removal and dust collection component moves synchronously with the feeding direction of the welding gun. The pressurized carbon dioxide in the storage tank enters the venturi tube through the gas supply pipe, and then the pressurized carbon dioxide gas acts on the impeller and drives the impeller to rotate. The impeller drives the grinding part to rotate during the rotation of the impeller. The grinding part sweeps away the welding slag particles attached to the weld, and the pressure of the carbon dioxide gas after work is reduced and enters the semi-annular gas distribution pipe. The carbon dioxide is discharged through the outlet hole and distributed around the welding end of the welding gun. The carbon dioxide isolates the air around the welding end of the welding gun, and the carbon dioxide gas in the venturi tube The flow velocity at the throat increases, causing negative pressure at the throat of the Venturi tube. The smoke and part of the carbon dioxide generated during the welding operation are sucked into the dust suction pipe. After being filtered by the filter cartridge, the smoke particles are adsorbed, and part of the carbon dioxide sucked into the dust suction pipe re-enters the Venturi tube, causing part of the carbon dioxide gas to circulate back and forth, ensuring that the carbon dioxide concentration around the welding end of the welding gun is in a basically constant state. The carbon dioxide outlet pressure can be used to effectively remove solder particle residues, smoke attached to the surface of the flat workpiece, and flying smoke. The carbon dioxide concentration around the welding gun effectively isolates the air, reduces the impact of external airflow on welding operations, and improves welding quality; part of the carbon dioxide is in a recycled state at the welding end of the welding gun, reducing the waste of carbon dioxide. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is an isometric perspective view of the present invention.

[0022] Figure 2 It is a rear view plane structure schematic diagram of the present invention.

[0023] Figure 3 The present invention Figure 2 Schematic diagram of the cross-sectional structure at AA in the middle.

[0024] Figure 4 The present invention Figure 2 Schematic diagram of the cross-sectional structure at BB in the middle.

[0025] Figure 5 The present invention Figure 2 Schematic diagram of the cross-sectional structure at CC in the middle.

[0026] Figure 6 The present invention Figure 3 Schematic diagram of the cross-sectional structure at DD in the middle.

[0027] Figure 7 It is a schematic diagram of the internal cross-sectional structure of the synchronous current equalizer of the present invention.

[0028] Figure 8It is a schematic diagram of the internal three-dimensional structure of the synchronous current equalizer of the present invention.

[0029] Fig. 9 It is a schematic diagram of the three-dimensional structure of the synchronous current equalizer of the present invention from another perspective.

[0030] Fig.10 The present invention Figure 1 Schematic diagram of the local enlarged structure at point E in the middle.

[0031] Markings in the attached figure: 1, ground rail; 2, slide; 3, PLC controller; 4, arm; 5, first drive; 6, second drive; 7, storage tank; 8, air supply pipeline; 9, welding machine; 10, lifting slide; 11, cantilever arm; 12, welding gun; 13, venturi tube; 14, dust suction pipeline; 15, filter cartridge; 16, impeller; 17, grinding piece; 18, semi-circular air distribution pipe; 19, outlet hole; 20, diverter pipe; 21, air inlet nozzle; 22, rotating nozzle; 23, installation Mounting frame; 24, clamping wheel; 25, driving gear; 26, rotating shaft; 27, first bevel gear; 28, second bevel gear; 29, gear ring; 30, wire supply channel; 31, air supply hole; 32, fixed wheel; 33, guide cylinder; 34, slider; 35, screw; 36, synchronous drive; 37, rotating frame; 38, stepping motor; 39, slag collecting cover; 40, annular cone slope protrusion; 41, dust collection cover; 42, opening groove; 43, brush ring; 44, pressure reducing valve; 45, pressing wheel. DETAILED DESCRIPTION

[0032] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0033] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0034] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0035] Please refer to Figure 1-6A programmable automatic plane welding device includes a programmable two-dimensional driver, which includes a ground rail 1, a slide 2 slidably mounted on the ground rail 1, a PLC controller 3 mounted on the slide 2, and an arm 4 slidably mounted on the slide 2, and a first driver 5 and a second driver 6 are installed on the slide 2, wherein the first driver 5 is used to drive the slide 2 to move, and the second driver 6 is used to drive the arm 4 to move.

[0036] The automatic plane welding device also includes a welding decontamination mechanism, which includes a storage tank 7, an air supply pipeline 8, a welding machine 9, a lifting slide 10 installed on the arm frame 4, a cantilever arm 11 installed on the lifting slide 10, a welding gun 12 and a decontamination and dust suction component. The storage tank 7 and the welding machine 9 are both installed on the slide 2, and the welding gun 12 and the decontamination and dust suction component are both installed on the cantilever arm 11; the decontamination and dust suction component includes a venturi tube 13 fixedly installed on the cantilever arm 11, a filtering dust suction component, a decontamination component and a flow distribution component, and the filtering dust suction component includes a dust suction pipeline 14 and A filter cartridge 15 is installed on the dust suction pipe 14, one end of the dust suction pipe 14 extends to the top of the welding end of the welding gun 12, and the other end of the dust suction pipe 14 extends to the middle of the throat of the venturi tube 13. The dirt removal part includes an impeller 16 rotatably installed on the outlet end of the venturi tube 13 and a grinding part 17 fixedly installed on the impeller 16. The storage tank 7 and the venturi tube 13 are connected through the air supply pipe 8; the flow distribution part includes a semi-annular air distribution pipe 18 connected to the outlet end of the venturi tube 13 and a plurality of outlet holes 19 evenly distributed on the inner wall of the semi-annular air distribution pipe 18.

[0037] For details, please refer to Figure 3 A slag collecting cover 39 is detachably installed at the bottom outlet end of the venturi tube 13. A through hole is provided in the middle of the slag collecting cover 39 to allow the grinding piece 17 to pass through, and an annular cone slope protrusion 40 is provided around the through hole. Furthermore, a 5 cm annular gap is left between the inner diameter of the through hole and the outer diameter of the grinding piece 17. The slag collecting cover 39 is threadedly connected to the bottom of the venturi tube 13. The grinding piece 17 adopts a convex wire brush extending downward in the middle. During the cleaning process of the solder particles, the grinding piece 17 can throw the solder particles to the inner wall of the through hole under the action of centrifugal force. Most of the solder particles enter the slag collecting cover 39 after repeated collisions. Under the action of the annular cone slope protrusion 40, the solder particles are blocked from escaping from the slag collecting cover 39. When the solder particles are collected to a certain amount, the slag collecting cover 39 can be removed from the bottom of the venturi tube 13 to clean the solder particles.

[0038] A brush ring 43 is provided at the bottom of the slag collecting cover 39; the brush ring 43 can reduce the escape of solder particles from the bottom of the slag collecting cover 39 and reduce the escape of carbon dioxide gas.

[0039] A rotating frame 37 is rotatably mounted on the cantilever arm 11, and the dirt removal and dust collection assembly is fixedly mounted on the rotating frame 37. A stepper motor 38 is mounted on the cantilever arm 11 to provide power for the rotation of the rotating frame 37; further, the stepper motor 38 is coupled to the PLC controller 3, and the stepper motor 38 has a built-in brake; Figure 1 As a reference figure, the stepper motor 38 can drive the rotating frame 37 to rotate 170 degrees in the forward and reverse directions to prevent the dirt removal and dust suction components from colliding with the welding gun 12, and the area of ​​the grinding piece 17 is much larger than the width of the weld, which is sufficient to fully cover the weld.

[0040] The programmable automatic plane welding device provided in this embodiment starts the stepper motor 38, so that the stepper motor 38 drives the rotating frame 37 to rotate, so that the dirt removal and dust suction component follows the feeding direction of the welding gun 12 for adaptive adjustment, so that the dirt removal and dust suction component is always located in the front side of the feeding direction of the welding gun 12 to meet the welding requirements of horizontal, vertical or inclined welds in the plane, thereby improving the applicability of the device.

[0041] The PLC controller 3 is coupled with the first driver 5 and the second driver 6. The PLC controller 3 can be used to adjust the trajectory of the welding gun 12 in the two-dimensional plane: the PLC controller 3 is a conventional known product on the market and can be programmed. Its internal structure and working principle are not within the scope of protection of this case. The appropriate model of the PLC controller 3 can be selected according to the needs, and no further limitation or elaboration is made here. The first driver 5 and the second driver 6 can use motors and drive wheels, or drive cylinders, screw assemblies, etc. to realize the linear feed drive of the slide 2 and the arm 4; the first driver 5 and the second driver 6 respectively drive the synchronous feed of the slide 2 and the arm 4, so as to complete the welding operation of the horizontal weld, vertical weld and inclined weld in the plane range.

[0042] The air supply pipe 8 adopts a plastic connecting pipe or a retractable connecting pipe; the outlet end of the dust suction pipe 14 faces the outlet port of the venturi tube 13; the grinding piece 17 is preferably a wire brush, and other flexible grinding pieces 17 with plasticity can also be used; the welding end of the welding gun 12 extends into the middle of the semi-annular air distribution pipe 18; the welding decontamination mechanism is located on one side of the feeding direction of the welding gun 12; the welding machine 9 is electrically connected to the welding gun 12 through the welding wire, and the welding machine 9 is provided with a wire feeding mechanism for conveying the welding wire; the filter cartridge 15 has a built-in filter element.

[0043] Please refer to 7-9, which also includes a shunt pipe 20. A synchronous flow equalizer is installed on the welding gun 12. The synchronous flow equalizer includes an air inlet nozzle 21 and a flow distribution component rotatably installed on the outlet end of the air inlet nozzle 21. One end of the shunt pipe 20 is connected to the air supply pipeline 8, and the other end of the shunt pipe 20 is connected to the inlet end of the air inlet nozzle 21. The synchronous flow equalizer includes a rotating nozzle 22 rotatably installed on the outlet end of the air inlet nozzle 21 and a synchronous transmission member. The synchronous transmission member includes a mounting frame 23 fixedly connected to the air inlet nozzle 21, two clamping wheels 24 rotatably installed on the mounting frame 23, and a rotating mounting member. A rotating shaft 26 mounted on the mounting frame 23, a first bevel gear 27 fixedly mounted on the rotating shaft 26, a second bevel gear 28 fixedly connected to one set of clamping wheels 24, a driving gear 25 fixedly mounted on the rotating shaft 26, and a gear ring 29 fixedly mounted on the rotating nozzle 22, the first bevel gear 27 meshes with the second bevel gear 28, the driving gear 25 meshes with the gear ring 29, the middle parts of the air inlet nozzle 21 and the rotating nozzle 22 are provided with a wire supply channel 30 allowing welding wire to pass through, and the rotating nozzle 22 is provided with an air supply hole 31 connected to the inside of the air inlet nozzle 21.

[0044] Furthermore, the outlet end of the air supply hole 31 faces the central axis of the welding wire; and the clamping wheel 24 is provided with an annular groove that matches the outer diameter of the welding wire.

[0045] An auxiliary wire feeding mechanism is installed on the cantilever arm 11. Specifically, the auxiliary wire feeding mechanism includes two fixed wheels 32 rotatably installed on the cantilever arm 11, a guide cylinder 33 located between the two fixed wheels 32, two sliders 34 slidably installed on the cantilever arm 11, a screw rod 35 providing power for the sliders 34 to slide up and down, a pressure wheel 45 rotatably installed on the sliders 34, and a synchronous driver 36 providing power for the two fixed wheels 32 to rotate; further, the screw rod 35 is screwed on the cantilever arm 11, and the screw rod 35 is rotatably connected to the sliders 34; the synchronous driver 36 includes a motor and a transmission gear assembly, and the motor provides power for the rotation of the two fixed wheels 32 through the transmission gear assembly; the synchronous driver 36 can also use a motor and a synchronous belt or a synchronous chain, and the motor provides power for the rotation of the two fixed wheels 32 through the synchronous belt or the synchronous chain.

[0046] The programmable automatic plane welding device provided in this embodiment delivers the welding wire to the welding gun 12 through the wire feeding mechanism on the welding machine 9, and the welding wire passes between the two clamping wheels 24 and passes out through the wire supply channel 30 on the air inlet nozzle 21 and the rotating nozzle 22. When the welding wire passes through the two clamping wheels 24, the two clamping wheels 24 are driven to rotate. After the first bevel gear 27 and the second bevel gear 28 are driven, the rotating shaft 26 drives the driving gear 25 to rotate, and the driving gear 25 drives the gear ring 29 and the rotating nozzle 22 to rotate, and part of the carbon dioxide gas enters the air inlet nozzle 21 through the shunt pipe 20 and is ejected through the air supply hole 31 on the rotating nozzle 22. Since the rotating nozzle 22 is in a rotating state, the rotating nozzle 22 is rotated. The carbon dioxide is uniformly dispersed at the welding end of the welding gun 12, and the rotating nozzle 22 can generate a vortex of carbon dioxide at the welding gun 12 during the rotation process, and the vortex can cause part of the gasified solder to settle downward to reduce the generation of welding smoke; at the same time, the rotating nozzle 22 can have a good disturbing effect on the carbon dioxide discharged through the outlet hole 19 during the rotation process, further improve the distribution uniformity of the carbon dioxide gas around the welding end of the welding gun 12, and form a good "isolation barrier" at the welding end of the welding gun 12; reduce the contact between external air and molten solder to ensure the welding quality of the weld.

[0047] The welding wire will be subject to some resistance when entering the welding gun 12 and the synchronous current equalizer, and the welding wire will pass through the guide tube 33, and the screw 35 will be rotated so that the pressure wheel 45 will press the welding wire onto the fixed wheel 32. The synchronous driver 36 will drive the two pressure wheels 45 to rotate synchronously to assist in conveying the welding wire, thereby ensuring the smooth supply of the welding wire and improving the smoothness of the feeding of the welding wire.

[0048] See also Fig.10 A dust hood 41 is installed at the inlet end of the dust suction pipe 14, and the air inlet nozzle 21 is rotatably installed on the welding gun 12. The dust hood 41 is provided with an opening groove 42 that matches the air inlet nozzle 21; further, the air inlet nozzle 21 is inserted into the opening groove 42, and the size of the opening groove 42 is larger than the outer size of the air inlet nozzle 21; the diverter pipe 20 adopts a flexible plastic tube.

[0049] When the dust hood 41 moves synchronously with the dirt removal and dust collection component, the air inlet nozzle 21 rotates synchronously with the dust hood 41, and the air inlet nozzle 21 always maintains good contact with the opening groove 42 of the dust hood 41. When the dirt removal and dust collection component is stationary, the dust hood 41 can limit the air inlet nozzle 21 to prevent the air inlet nozzle 21 from rotating.

[0050] A pressure reducing valve 44 is installed on the shunt pipe 20; the pressure of the carbon dioxide gas flowing through the shunt pipe 20 can be adaptively adjusted through the pressure reducing valve 44 to avoid excessive carbon dioxide pressure affecting the quality of the weld.

[0051] The filter cartridge 15 can be detachably installed on the air supply pipe 8; further, the filter cartridge 15 is socket-connected or threadedly connected to the air supply pipe 8; after being used for a period of time, the filter cartridge 15 can be removed and replaced, which is easy to operate and can ensure a good filtering effect of the filter cartridge 15 on smoke and dust.

[0052] The use process of the programmable automatic plane welding device provided by the present invention is as follows: according to the direction of the weld, the corresponding control program is input into the PLC controller 3, and the two-dimensional driver drives the welding gun 12 on the cantilever arm 11 to move in the two-dimensional plane to realize the welding of the plane weld; when performing multi-layer welding of the weld, the rotating frame 37 is driven to rotate by the stepping motor 38, so that the dirt removal and dust collection component is located on the front side of the feeding direction of the welding gun 12; the pressurized carbon dioxide in the storage tank 7 enters the venturi tube 13 through the gas supply pipe 8, and then the pressurized carbon dioxide gas acts on the impeller 16 and drives the impeller 16 to rotate. During the rotation of the impeller 16, the grinding piece 17 is driven to rotate, and the grinding piece 17 sweeps away the welding slag particles attached to the weld, and the welding slag particles enter the slag collecting cover 39 for storage; and the pressure of the carbon dioxide gas after work is reduced and enters the semi-annular gas distribution pipe 18, and the carbon dioxide passes through the outlet hole 19 After being discharged, it is distributed around the welding end of the welding gun 12, and the carbon dioxide isolates the air around the welding end of the welding gun 12; and the flow rate of the carbon dioxide gas at the throat of the venturi tube 13 increases, so that a negative pressure is generated at the throat of the venturi tube 13, and the smoke and part of the carbon dioxide generated during the welding operation are sucked into the dust suction pipe 14. After being filtered by the filter cartridge 15, the smoke particles are adsorbed, and part of the carbon dioxide sucked into the dust suction pipe 14 re-enters the venturi tube 13; and part of the carbon dioxide is discharged through the shunt pipe 20, the air inlet nozzle 21 and the air supply hole 31 on the rotating nozzle 22. Under the action of the auxiliary wire feeding mechanism, the welding wire is gradually extended from the welding end of the welding gun 12, and the welding wire drives the two clamping wheels 24 to rotate. After the transmission, the rotating nozzle 22 rotates, and the carbon dioxide forms a protective gas group with a constant concentration around the welding end of the welding gun 12. After the welding machine 9 is started, the welding wire melts to achieve welding of the weld.

[0053] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A programmable automatic plane welding device, comprising a programmable two-dimensional driver, the two-dimensional driver comprising a ground rail (1), a carriage (2) slidably mounted on the ground rail (1), a PLC controller (3) mounted on the carriage (2), and an arm (4) slidably mounted on the carriage (2), the carriage (2) being mounted with a first driver (5) and a second driver (6), the first driver (5) being used to drive the carriage (2) to move, and the second driver (6) being used to drive the arm (4) to move; characterized in that: The welding decontamination device also includes a welding decontamination device, the welding decontamination device including a storage tank (7), an air supply pipe (8), a welding machine (9), a lifting slide (10) mounted on the arm frame (4), a cantilever arm (11) mounted on the lifting slide (10), a welding gun (12) and a decontamination and dust collection component, the storage tank (7) and the welding machine (9) are both mounted on the slide frame (2), and the welding gun (12) and the decontamination and dust collection component are both mounted on the cantilever arm (11); The dirt removal and dust suction assembly comprises a venturi tube (13) fixedly mounted on the cantilever arm (11), a filtering dust suction component, a dirt removal component and a flow distribution component; The filtering dust collecting component comprises a dust collecting pipe (14) and a filter cartridge (15) mounted on the dust collecting pipe (14), one end of the dust collecting pipe (14) extending above the welding end of the welding gun (12), and the other end of the dust collecting pipe (14) extending into the middle of the throat of the venturi tube (13); The dirt removal component comprises an impeller (16) rotatably mounted on the outlet end of the venturi tube (13) and a polishing component (17) fixedly mounted on the impeller (16); the storage tank (7) and the venturi tube (13) are connected via an air supply pipe (8); the flow distribution component comprises a semi-annular air distribution pipe (18) connected to the outlet end of the venturi tube (13) and a plurality of outlet holes (19) evenly distributed on the inner wall of the semi-annular air distribution pipe (18); It also includes a flow divider (20), the welding gun (12) is equipped with a synchronous flow equalizer, the synchronous flow equalizer includes an air inlet nozzle (21) and a flow equalizing gas distribution component rotatably mounted on the outlet end of the air inlet nozzle (21), one end of the flow divider (20) is connected to the air supply pipeline (8), and the other end of the flow divider (20) is connected to the inlet end of the air inlet nozzle (21), and the synchronous flow equalizer includes a rotating nozzle (22) rotatably mounted on the outlet end of the air inlet nozzle (21) and a synchronous transmission member; The synchronous transmission member comprises a mounting frame (23) fixedly connected to the air inlet nozzle (21), two clamping wheels (24) rotatably mounted on the mounting frame (23), a rotating shaft (26) rotatably mounted on the mounting frame (23), a first bevel gear (27) fixedly mounted on the rotating shaft (26), a second bevel gear (28) fixedly connected to one set of the clamping wheels (24), a driving gear (25) fixedly mounted on the rotating shaft (26), and a gear ring (29) fixedly mounted on the rotating nozzle (22), the first bevel gear (27) meshing with the second bevel gear (28), the driving gear (25) meshing with the gear ring (29), the middle parts of the air inlet nozzle (21) and the rotating nozzle (22) are both provided with a wire supply channel (30) for allowing welding wire to pass through, and the rotating nozzle (22) is provided with a gas supply hole (31) communicating with the inside of the air inlet nozzle (21); An auxiliary wire feeding mechanism is mounted on the cantilever arm (11), the auxiliary wire feeding mechanism comprising two fixed wheels (32) rotatably mounted on the cantilever arm (11), a guide cylinder (33) located between the two fixed wheels (32), two sliders (34) mounted on the cantilever arm (11) for sliding up and down, a screw rod (35) for providing power for the sliders (34) to slide up and down, a pressure wheel (45) rotatably mounted on the sliders (34), and a synchronous driver (36) for providing power for the two fixed wheels (32) to rotate.

2. The programmable automatic flat welding device according to claim 1, characterized in that: A pressure reducing valve (44) is installed on the diversion pipe (20).

3. The programmable automatic flat welding device according to claim 1, characterized in that: A dust hood (41) is installed at the inlet end of the dust suction pipe (14); the air inlet nozzle (21) is rotatably mounted on the welding gun (12); and the dust hood (41) is provided with an opening groove (42) that fits with the air inlet nozzle (21).

4. The programmable automatic flat welding device according to claim 1, characterized in that: A rotating frame (37) is rotatably mounted on the cantilever arm (11), the dirt removal and dust suction assembly is fixedly mounted on the rotating frame (37), and a stepping motor (38) is mounted on the cantilever arm (11) to provide power for the rotation of the rotating frame (37).

5. The programmable automatic flat welding device according to claim 1, characterized in that: A slag collecting cover (39) is detachably mounted on the bottom outlet end of the venturi tube (13), a through opening for allowing the grinding piece (17) to pass through is provided in the middle of the slag collecting cover (39), and an annular conical slope protrusion (40) is provided around the through opening.

6. The programmable automatic flat welding device according to claim 5, characterized in that: A brush ring (43) is provided at the bottom of the slag collecting cover (39).

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