Auxiliary mistake proofing device for welding of new energy automobile welding part

Abstract

The invention belongs to the technical field of new energy automobile welding equipment, and particularly relates to a new energy automobile welding part welding auxiliary mistake proofing device which comprises a mounting cylinder, two symmetrically-distributed threaded holes are formed in the cylinder wall of the mounting cylinder, and positioning bolts are in threaded connection with the hole walls of the threaded holes. The inner side ends of the positioning bolts are connected with arc-shaped clamping blocks through rolling bearings. The welding auxiliary mistake proofing device not only has the function of continuously cleaning aluminum oxide on the surface of the welding area of the aluminum alloy welding part, but also has the function of efficiently dissipating heat and protecting the welding area of the aluminum alloy welding part, so that the situation of deformation defect caused by excessive heat accumulation due to high heat diffusion of the aluminum alloy welding part is avoided; and moreover, the welding auxiliary mistake proofing device can improve the comfort of welding operation of the aluminum alloy welding parts by workers, the situation that welding operation errors of the aluminum alloy welding parts are caused by discomfort is avoided, and then the welding reliability, quality and qualification rate of the aluminum alloy welding parts of the new energy automobile are effectively improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of new energy vehicle welding equipment, and in particular relates to a welding auxiliary error-proofing device for welding parts of new energy vehicles. Background Art

[0002] New energy vehicles refer to vehicles that use unconventional vehicle fuels as their power source, or use conventional vehicle fuels but adopt new on-board power devices. They include pure electric vehicles, hybrid vehicles, fuel cell electric vehicles, etc., and new energy vehicles also need to use welding equipment to weld welded parts during the production process. At the same time, in order to prevent welding errors from causing welding failures during the welding process, welding error-proofing devices are often used in the welding process. For example, the authorized patent number is CN220498224U, which discloses a welding error-proofing device for welding parts of new energy vehicles.

[0003] At present, a large number of aluminum alloy welded parts need to be welded in the production process of new energy vehicles. Before welding, the aluminum alloy welded parts need to remove the aluminum oxide on the surface of the aluminum alloy. The treated aluminum alloy welded parts are then welded to the new energy vehicle frame. However, due to the active characteristics of aluminum, the treated aluminum alloy welded parts still produce a dense aluminum oxide surface layer, and due to the high melting point of aluminum oxide, it will cause welding obstacles to aluminum alloy welded parts, so that a higher temperature is required to complete the welding. However, due to the characteristics of high thermal conductivity and large linear expansion coefficient of the aluminum alloy matrix, during welding, heat will be quickly conducted and diffused in the aluminum alloy matrix inside the aluminum alloy welded parts, resulting in more obvious thermal expansion and contraction in the welding area. When the heat accumulated in the welding area exceeds a certain limit, the aluminum alloy matrix with a lower melting point will soften, thereby causing welding defects such as deformation damage in the aluminum alloy welded parts, which seriously affects the reliability, quality and qualified rate of welding of aluminum alloy welded parts of new energy vehicles.

[0004] In addition, during the welding operation of aluminum alloy welded parts for new energy vehicles, workers need to wear protective masks to maintain their own health and safety. However, wearing protective masks for a long time will make it difficult for sweat to be discharged smoothly from the workers' faces, thereby causing physical discomfort. Physical discomfort will interfere with the workers' accuracy in controlling the welding clamps for welding, increase the possibility of welding errors, and ultimately have an adverse effect on the quality and pass rate of welding of aluminum alloy welded parts for new energy vehicles.

[0005] To this end, we propose a welding auxiliary error-proofing device for new energy vehicle welding parts to solve the above problems. Summary of the invention

[0006] The purpose of the present invention is to provide a welding auxiliary error-proofing device for welding parts of new energy vehicles in view of the above problems.

[0007] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a welding auxiliary error-proofing device for welding parts of new energy vehicles, comprising a mounting tube, the tube wall of the mounting tube is provided with two symmetrically distributed threaded holes, and the hole wall of the threaded hole is threadedly connected with a positioning bolt, the inner side end of the positioning bolt is connected with an arc-shaped clamping block through a rolling bearing, the outer wall of the arc-shaped clamping block is fixedly sleeved with a rubber sleeve, the outer wall of the rubber sleeve is fixedly connected to the inner wall of the mounting tube, and the inner wall of the mounting tube is fixedly connected with a weld aluminum oxide cleaning mechanism;

[0008] The outer wall of the installation cylinder is fixedly sleeved with a rotary bearing and a rubber ring, and the outer wall of the outer ring of the rotary bearing is fixedly connected with an L-shaped plate and a temperature detection mechanism;

[0009] The outer wall of the L-shaped plate is fixedly connected with a universal jet mechanism;

[0010] The two universal jet mechanisms are respectively fixedly connected to a first air pipe and a second air pipe, and the top ends of the first air pipe and the second air pipe are commonly connected to an air supply mechanism;

[0011] One of the air outlet ends of the air supply mechanism is fixedly connected to an auxiliary mechanism.

[0012] In the above-mentioned welding auxiliary error prevention device for new energy vehicle welding parts, the weld alumina cleaning mechanism includes a first electric push rod fixedly connected to the inner wall of the mounting cylinder, the bottom end of the first electric push rod is fixedly connected to a connecting frame, the inner wall of the connecting frame is fixedly connected to a motor, the rotating end of the motor passes through the lower surface of the connecting frame and is fixedly connected to a rotating rod through a connector, and the bottom end of the rotating rod is fixedly connected to a wire grinding sleeve for grinding the weld alumina.

[0013] In the above-mentioned welding auxiliary error prevention device for welding parts of new energy vehicles, the temperature detection mechanism includes an arc-shaped plate fixedly connected to the outer wall of the outer ring of the rotating bearing, the outer wall of the arc-shaped plate is provided with an adjustment through hole, and the hole wall of the adjustment through hole is movably connected with a screw, the rod wall of the screw is fixedly sleeved with a resist ring, the rod wall of the screw is threadedly connected with a positioning nut, and the side end of the screw is fixedly connected with an infrared temperature sensor.

[0014] In the above-mentioned auxiliary error-proofing device for welding parts of new energy vehicles, the universal jet mechanism includes a first rubber cover and a second rubber cover fixedly connected to the outer wall of the L-shaped plate, the outer wall of the first rubber cover is fixedly connected to the air outlet end of the first air pipe, the outer wall of the second rubber cover is fixedly connected to the air outlet end of the second air pipe, the side ends of the first rubber cover and the second rubber cover are fixedly connected with jet nozzles, the inner walls of the first rubber cover and the second rubber cover are fixedly connected to two directional iron wires, and the side ends of the directional iron wires are fixedly connected to the outer wall of the L-shaped plate.

[0015] In the above-mentioned auxiliary error-proofing device for welding parts of new energy vehicles, the gas supply mechanism includes a base plate, the upper surface of the base plate is fixedly connected to a first gas hood, the upper surface of the first gas hood is fixedly connected to a second gas hood, the inner wall of the first gas hood is fixedly connected to a first partition and a second partition, the internal cavity of the first gas hood is divided into a gas extraction area, a carbon dioxide separation area and an oxygen separation area by the first partition and the second partition, the upper surface of the base plate is fixedly connected to a PLC controller, the outer wall of the first gas hood located in the gas extraction area is fixedly embedded with a second electric push rod, and the second electric push rod The reciprocating end is fixedly connected to a rubber piston block, the rubber outer wall of the rubber piston block is in sealing contact with the inner wall of the first gas hood and the upper surface of the first partition, the outer walls of both ends of the first partition are fixedly connected to a first one-way exhaust valve and a second one-way exhaust valve, the air inlet end of the second one-way exhaust valve is fixedly connected to a conduit, the air inlet end of the conduit passes through the second partition and is connected to the cavity of the oxygen separation zone, the inner wall of the first gas hood is fixedly connected to two air cylinders, the outer walls of the two air cylinders are commonly connected to an air delivery pipe, the outer wall of the second partition is provided with a fixed through hole matched with the air delivery pipe, one of which is The outer wall of the breathable cylinder is fixedly sleeved with a carbon dioxide breathable membrane, and the carbon dioxide breathable membrane is located inside the cavity of the carbon dioxide separation zone, the outer wall of the other breathable cylinder is fixedly sleeved with an oxygen-enriched membrane sleeve, and the oxygen-enriched membrane sleeve is located inside the cavity of the oxygen separation zone, the outer wall of the first gas cover located inside the oxygen-enriched membrane sleeve is fixedly connected to an automatic pressure relief valve, the outer wall of the first gas cover located on the automatic pressure relief valve is fixedly connected to a cooling mechanism, the top of the first gas cover is fixedly connected to a third exhaust check valve and a fourth exhaust check valve, the inner wall of the second gas cover and the upper surface of the first gas cover are fixedly connected together There is a third partition, and the second air hood is located on the inner walls on both sides of the third partition, and is fixedly connected with a first solenoid valve and a second solenoid valve respectively. The air outlet end of the first solenoid valve is fixedly connected to the air inlet end of the first air pipe, and the air outlet end of the second solenoid valve is fixedly connected to the air inlet end of the auxiliary mechanism. The inner wall of the second air hood is fixedly connected with two first air pressure sensors and a second air pressure sensor for controlling the opening and closing of the first solenoid valve and the second solenoid valve. The outer wall of the first air hood is fixedly connected with a micro air pump, and the air outlet end of the micro air pump passes through the inner wall of the first air hood and is located on the inner side of the carbon dioxide breathable membrane.

[0016] In the above-mentioned auxiliary error-proofing device for welding parts of new energy vehicles, the cooling mechanism includes a heat insulation cover fixedly connected to the outer wall of the first air cover, a semiconductor refrigeration plate is fixedly embedded in the top of the heat insulation cover, and a plurality of metal mesh plates are fixedly connected to the cooling side of the semiconductor refrigeration plate. The air inlet end of the second air pipe is fixedly connected to the side end of the heat insulation cover, and the top of the heat insulation cover is fixedly connected to an L-shaped capillary, and the air outlet end of the L-shaped capillary is located on the outside of the heat dissipation side of the semiconductor refrigeration plate.

[0017] In the above-mentioned auxiliary welding error-proofing device for welding parts of new energy vehicles, the auxiliary mechanism includes a third air pipe fixedly connected to the air outlet end of the second solenoid valve, and the air outlet end of the third air pipe is fixedly connected to an air purification mask.

[0018] In the above-mentioned auxiliary error-proofing device for welding parts of new energy vehicles, an annular sealing airbag is fixedly connected to the inner wall of the top end of the mounting cylinder, and a U-shaped block is fixedly connected to the outer wall of the outer ring of the rotating bearing. A threaded hole is opened on the outer wall of the U-shaped block, and a limit bolt matching the rubber ring is threadedly connected to the hole wall of the threaded hole.

[0019] Compared with the existing technology, the advantages of a welding auxiliary error-proofing device for new energy vehicle welding parts are:

[0020] 1. Through the weld alumina cleaning mechanism, universal jet mechanism and air supply mechanism, when the aluminum alloy welded parts of new energy vehicles are welded, the weld alumina cleaning mechanism is used to clean the alumina on the surface of the aluminum alloy at the weld seam, and at the same time, the air supply mechanism generates high carbon dioxide air, oxygen-rich air and air flow for heat dissipation in the welding area of ​​the aluminum alloy welded parts, and the high carbon dioxide air is sprayed to the position of the aluminum alloy welded parts after the alumina is cleaned through the universal jet mechanism, and the high carbon dioxide air is used to form a protective air film layer on the surface of the aluminum alloy welded parts after the alumina is cleaned. The protective air film layer can effectively prevent the aluminum oxide surface from contacting with the large The situation in which a large amount of oxygen contact produces a large amount of aluminum oxide, so that the aluminum alloy welded parts are not affected by the high melting point of aluminum oxide during welding, thereby avoiding the rapid conduction and diffusion of welding heat in the aluminum alloy matrix of the aluminum alloy welded parts, avoiding obvious thermal expansion and contraction in the welding area of ​​the aluminum alloy welded parts, and thus avoiding welding defects such as deformation of the aluminum alloy welded parts. This mechanism enables the welding auxiliary error prevention device to have the function of continuously cleaning the aluminum oxide on the surface of the welding area of ​​the aluminum alloy welded parts, avoiding the deformation defects of the aluminum alloy welded parts caused by the interference of a large amount of aluminum oxide, and effectively improving the reliability, quality and qualified rate of welding of aluminum alloy welded parts of new energy vehicles.

[0021] 2. Through the temperature detection mechanism, cooling mechanism, universal jet mechanism and air supply mechanism, the air flow used for heat dissipation in the welding area of ​​the aluminum alloy welded parts can assist the heat dissipation of the welding area of ​​the aluminum alloy welded parts after being ejected through the second air pipe, the second rubber cover and the air nozzle, and when the temperature value detected by the infrared temperature sensor exceeds the high temperature threshold preset by the PLC controller, the PLC controller controls the cooling mechanism to generate low-temperature air, and then the low-temperature air is transported to the welding area of ​​the aluminum alloy welded parts through the cooling mechanism, the universal jet mechanism and the second air pipe. At this time, the cooling effect of the aluminum alloy welded parts can be further accelerated, and the aluminum alloy welded parts can be prevented from accumulating heat too quickly due to the high thermal conductivity and linear expansion coefficient, causing deformation defects of the aluminum alloy welded parts. This mechanism enables the welding auxiliary error-proofing device to have the function of efficient heat dissipation protection in the welding area of ​​the aluminum alloy welded parts, and avoids the situation where the aluminum alloy welded parts accumulate too much heat due to high heat diffusion, causing deformation defects, and effectively improves the reliability, quality and qualified rate of welding of aluminum alloy welded parts of new energy vehicles.

[0022] 3. Through the auxiliary mechanism set up, when the welding auxiliary error-proofing device is used, the staff can also wear an air purification mask with a third air pipe, and the PLC controller controls the second solenoid valve to be energized and opened. At this time, the oxygen-enriched air in the second air hood is transported to the inside of the air purification mask along the third air pipe. The inflowing oxygen-enriched airflow can not only cool and dry the staff's face, avoiding discomfort caused by excessive sweat on the face, but also ensure that the staff breathes sufficient oxygen to avoid dizziness and discomfort caused by lack of oxygen. In addition, a large amount of airflow is ejected from the inside of the air purification mask, which can also reduce the probability of the filter element structure in the air purification mask being blocked by dust, ensuring the continuous and reliable use of the air purification mask. This mechanism enables the welding auxiliary error-proofing device to improve the comfort of the staff in the welding operation of aluminum alloy welds, avoid the welding operation errors of aluminum alloy welds caused by discomfort, thereby improving the reliability, quality and qualified rate of welding of aluminum alloy welds of new energy vehicles. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of a welding auxiliary error-proofing device for welding parts of new energy vehicles provided by the present invention;

[0024] Figure 2 yes Figure 1 Schematic diagram of the aluminum oxide cleaning mechanism in the weld seam for grinding and cleaning the aluminum oxide in the welding area of ​​an aluminum alloy weldment;

[0025] Figure 3 It is a structural schematic diagram of a temperature detection mechanism in a welding auxiliary error prevention device for welding parts of a new energy vehicle provided by the present invention;

[0026] Figure 4It is a structural schematic diagram of a universal jet mechanism in a welding auxiliary error-proofing device for welding parts of a new energy vehicle provided by the present invention;

[0027] Figure 5 It is a structural schematic diagram of an air supply mechanism in a welding auxiliary error prevention device for a new energy vehicle welding part provided by the present invention;

[0028] Figure 6 It is a structural schematic diagram of an auxiliary mechanism in a welding auxiliary error-proofing device for welding parts of a new energy vehicle provided by the present invention;

[0029] Figure 7 It is a structural schematic diagram of the air-permeable cylinder part of a welding auxiliary error-proofing device for welding parts of a new energy vehicle provided by the present invention;

[0030] Figure 8 It is a structural schematic diagram of a U-shaped block part in a welding auxiliary error-proofing device for welding parts of a new energy vehicle provided by the present invention;

[0031] Fig. 9 It is a three-dimensional structural schematic diagram of the installation cylinder part in the welding auxiliary error prevention device for new energy vehicle welding parts provided by the present invention.

[0032] In the figure: 1 mounting cylinder, 2 positioning bolt, 3 arc clamp block, 4 weld alumina cleaning mechanism, 41 first electric push rod, 42 connecting frame, 43 motor, 44 rotating rod, 45 wire grinding sleeve, 5 temperature detection mechanism, 51 arc plate, 52 screw, 53 retaining ring, 54 positioning nut, 55 infrared temperature sensor, 6 universal jet mechanism, 61 first rubber cover, 62 second rubber cover, 63 jet nozzle, 64 directional wire, 7 air supply mechanism, 71 bottom plate, 72 first air cover, 73 second air cover, 74 first partition, 75 second partition, 76 PLC controller, 77 second electric push rod, 78 rubber piston block, 79 first one-way exhaust valve, 710 second one-way exhaust valve, 711 conduit, 7 12 breather tube, 713 air delivery pipe, 714 carbon dioxide breather membrane, 715 oxygen-enriched membrane sleeve, 716 automatic pressure relief valve, 717 third exhaust check valve, 718 fourth exhaust check valve, 719 third baffle, 720 first solenoid valve, 721 second solenoid valve, 722 first air pressure sensor, 723 second air pressure sensor, 724 micro air pump, 8 auxiliary mechanism, 81 third air pipe, 82 air purification mask, 9 cooling mechanism, 91 heat insulation cover, 92 semiconductor refrigeration sheet, 93 metal mesh plate, 94 L-shaped capillary, 10 rubber sleeve, 11 rotating bearing, 12 rubber ring, 13 L-shaped plate, 14 first air pipe, 15 second air pipe, 16 annular sealing airbag, 17 U-shaped block, 18 limit bolt. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions 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 are within the scope of protection of the present invention.

[0034] like Figure 1-Figure 9 As shown, a welding auxiliary error-proofing device for a welding part of a new energy vehicle comprises a mounting cylinder 1, the cylinder wall of the mounting cylinder 1 is provided with two symmetrically distributed threaded holes, and the hole wall of the threaded hole is threadedly connected with a positioning bolt 2, the inner end of the positioning bolt 2 is connected with an arc clamping block 3 through a rolling bearing, the outer wall of the arc clamping block 3 is fixedly sleeved with a rubber sleeve 10, the outer wall of the rubber sleeve 10 is fixedly connected to the inner wall of the mounting cylinder 1, the inner wall of the mounting cylinder 1 is fixedly connected with a weld alumina cleaning mechanism 4, the weld alumina cleaning mechanism 4 comprises a first electric push rod 41 fixedly connected to the inner wall of the mounting cylinder 1, the bottom end of the first electric push rod 41 is fixedly connected with a connecting frame 42, the inner wall of the connecting frame 42 is fixedly connected with a motor 43, the rotating end of the motor 43 passes through the lower surface of the connecting frame 42, and is fixedly connected with a rotating rod 44 through a connector, the bottom end of the rotating rod 44 is fixedly connected with a wire grinding sleeve 45 for grinding weld alumina, and the mechanism enables the welding auxiliary error-proofing device to not only have the function of continuously cleaning the surface alumina of the welding area of ​​the aluminum alloy welded part.

[0035] An annular sealing airbag 16 is fixedly connected to the inner wall of the top end of the mounting tube 1, and a U-shaped block 17 is fixedly connected to the outer wall of the outer ring of the rotating bearing 11. A threaded hole is opened on the outer wall of the U-shaped block 17, and a limiting bolt 18 matching the rubber ring 12 is threadedly connected to the hole wall of the threaded hole. The annular sealing airbag 16 can improve the stability of the installation of the mounting tube 1, and the limiting bolt 18 can improve the stability of the L-shaped plate 13 after the position is adjusted.

[0036] The outer wall of the mounting tube 1 is fixedly sleeved with a rotating bearing 11 and a rubber ring 12, the outer wall of the outer ring of the rotating bearing 11 is fixedly connected with an L-shaped plate 13 and a temperature detection mechanism 5, the temperature detection mechanism 5 comprises an arc plate 51 fixedly connected with the outer wall of the outer ring of the rotating bearing 11, an adjusting through hole is opened on the outer wall of the arc plate 51, and a screw 52 is movably connected to the hole wall of the adjusting through hole, a retaining ring 53 is fixedly sleeved on the rod wall of the screw 52, ​​a positioning nut 54 is threadedly connected to the rod wall of the screw 52, ​​and an infrared temperature sensor 55 is fixedly connected to the side end of the screw 52.

[0037] The outer wall of the L-shaped plate 13 is fixedly connected to a universal jet mechanism 6, which includes a first rubber cover 61 and a second rubber cover 62 fixedly connected to the outer wall of the L-shaped plate 13, the outer wall of the first rubber cover 61 is fixedly connected to the air outlet end of the first air pipe 14, the outer wall of the second rubber cover 62 is fixedly connected to the air outlet end of the second air pipe 15, the side ends of the first rubber cover 61 and the second rubber cover 62 are fixedly connected to jet nozzles 63, the inner walls of the first rubber cover 61 and the second rubber cover 62 are fixedly connected to two directional iron wires 64, and the side ends of the directional iron wires 64 are fixedly connected to the outer wall of the L-shaped plate 13.

[0038] The two universal jet mechanisms 6 are respectively fixedly connected to the first air pipe 14 and the second air pipe 15, and the top ends of the first air pipe 14 and the second air pipe 15 are commonly connected to the air supply mechanism 7, and the air supply mechanism 7 includes a bottom plate 71, and the upper surface of the bottom plate 71 is fixedly connected to the first air hood 72, and the upper surface of the first air hood 72 is fixedly connected to the second air hood 73, and the inner wall of the first air hood 72 is fixedly connected to the first partition plate 74 and the second partition plate 75, and the internal cavity of the first air hood 72 is divided into a gas extraction area, a carbon dioxide separation area and an oxygen separation area by the first partition plate 74 and the second partition plate 75, and the upper surface of the bottom plate 71 is fixedly connected to the PLC controller 76, and the outer wall of the first air hood 72 located in the gas extraction area is fixedly embedded with a second electric The reciprocating end of the second electric push rod 77 is fixedly connected with a rubber piston block 78, the rubber outer wall of the rubber piston block 78 is in sealing contact with the inner wall of the first gas hood 72 and the upper surface of the first partition 74, the outer walls of both ends of the first partition 74 are fixedly connected with a first one-way exhaust valve 79 and a second one-way exhaust valve 710, the air inlet end of the second one-way exhaust valve 710 is fixedly connected with a conduit 711, the air inlet end of the conduit 711 passes through the second partition 75 and is connected with the cavity of the oxygen separation zone, the inner wall of the first gas hood 72 is fixedly connected with two air permeable cylinders 712, the outer walls of the two air permeable cylinders 712 are commonly connected with an air delivery pipe 713, and the outer wall of the second partition 75 is provided with a fixed passage matched with the air delivery pipe 713. Hole, one of the air permeable cylinders 712 has a carbon dioxide breathable membrane 714 fixedly sleeved on its outer wall, and the carbon dioxide breathable membrane 714 is located inside the cavity of the carbon dioxide separation zone, the other air permeable cylinder 712 has an oxygen-enriched membrane sleeve 715 fixedly sleeved on its outer wall, and the oxygen-enriched membrane sleeve 715 is located inside the cavity of the oxygen separation zone, the first air hood 72 is located on the outer wall of the oxygen-enriched membrane sleeve 715 and is fixedly connected to an automatic pressure relief valve 716, the first air hood 72 is located on the outer wall of the automatic pressure relief valve 716 and is fixedly connected to a cooling mechanism 9, the top of the first air hood 72 is fixedly connected to a third exhaust check valve 717 and a fourth exhaust check valve 718, the inner wall of the second air hood 73 and the upper surface of the first air hood 72 are jointly fixedly connected to a third exhaust check valve 717 and a fourth exhaust check valve 718, There are three partitions 719, and the second air hood 73 is located on the inner walls on both sides of the third partition 719, and the first solenoid valve 720 and the second solenoid valve 721 are fixedly connected respectively. The outlet end of the first solenoid valve 720 is fixedly connected to the inlet end of the first air pipe 14, and the outlet end of the second solenoid valve 721 is fixedly connected to the inlet end of the auxiliary mechanism 8. The inner wall of the second air hood 73 is fixedly connected with two first air pressure sensors 722 and second air pressure sensors 723 for controlling the opening and closing of the first solenoid valve 720 and the second solenoid valve 721. The outer wall of the first air hood 72 is fixedly connected with a micro air pump 724, and the outlet end of the micro air pump 724 passes through the inner wall of the first air hood 72 and is located on the inner side of the carbon dioxide breathable membrane 714.

[0039] The cooling mechanism 9 includes a heat insulation cover 91 fixedly connected to the outer wall of the first air cover 72, a semiconductor refrigeration plate 92 is fixedly embedded at the top end of the heat insulation cover 91, and a plurality of metal mesh plates 93 are fixedly connected to the cooling side of the semiconductor refrigeration plate 92. The air inlet end of the second air pipe 15 is fixedly connected to the side end of the heat insulation cover 91, and the top end of the heat insulation cover 91 is fixedly connected to an L-shaped capillary 94, and the air outlet end of the L-shaped capillary 94 is located on the outside of the heat dissipation side of the semiconductor refrigeration plate 92. This mechanism can improve the protective effect of the welding of aluminum alloy welded parts, avoid deformation defects of aluminum alloy welded parts caused by high temperature, and improve the welding quality and pass rate of aluminum alloy welded parts of new energy vehicles.

[0040] One of the air outlet ends of the air supply mechanism 7 is fixedly connected to an auxiliary mechanism 8, and the auxiliary mechanism 8 includes a third air pipe 81 fixedly connected to the air outlet end of the second solenoid valve 721, and the air outlet end of the third air pipe 81 is fixedly connected to an air purification mask 82. This mechanism enables the welding auxiliary error-proofing device to improve the comfort of the workers in the welding operation of aluminum alloy welds, avoid the situation where welding operation errors of aluminum alloy welds due to discomfort, thereby improving the reliability, quality and pass rate of welding of aluminum alloy welds of new energy vehicles.

[0041] The first electric push rod 41, the motor 43, the second electric push rod 77, the first solenoid valve 720, the second solenoid valve 721, the micro air pump 724 and the semiconductor refrigeration plate 92 are all electrically connected to the output end of the PLC controller 76 through wires, and the infrared temperature sensor 55, the first air pressure sensor 722 and the second air pressure sensor 723 are all electrically connected to the input end of the PLC controller 76 through wires. The above-mentioned power-on devices and electrical connections are all existing technologies and are well known to those skilled in the art, and will not be repeated here.

[0042] The operating principle of the present invention is now described as follows: when it is necessary to weld aluminum alloy welded parts for new energy vehicles, firstly, the mounting tube 1 is mounted on the welding end of the welding clamp through the positioning bolt 2 and the arc clamp block 3, ensuring that the welding end of the welding clamp is exposed from the bottom of the mounting tube 1, and then the position of the L-shaped plate 13 is rotated by means of the rotating bearing 11, and the jet direction of the first rubber cover 61 and the second rubber cover 62 is adjusted, and the jet nozzle 63 of the first rubber cover 61 is sprayed to the position after the aluminum oxide cleaning mechanism 4 at the bottom of the weld is cleaned, so that the airflow passing through the jet nozzle 63 of the second rubber cover 62 is sprayed to the welding area of ​​the aluminum alloy welded parts, and the first rubber cover 61 and the second rubber cover 62 are bent and shaped by the directional iron wire 64, and finally the limiting bolt 18 is rotated to make the limiting bolt 18 squeeze the rubber ring 12 to complete the positioning of the L-shaped plate 13, and at the same time, the temperature measurement angle of the infrared temperature sensor 55 is adjusted by the screw 52 and the positioning nut 54, so that the infrared temperature sensor 55 can detect the temperature of the aluminum alloy welded parts in the welding area after the heat is diffused, and the infrared temperature sensor 55 converts the detected temperature value into an electrical signal and transmits it to the PLC controller 76;

[0043] Moreover, the PLC controller 76 also controls the second electric push rod 77 and the micro air pump 724 to work. The micro air pump 724 starts to deliver air to the breathable cylinder 712. The two breathable cylinders 712 are connected through the conduit 711. The moving end of the second electric push rod 77 is controlled by the PLC controller 76 to move back and forth. When moving to the right, it drives the rubber piston block 78 to move, and sucks the air at the carbon dioxide breathable membrane 714 through the first one-way exhaust valve 79, so that a negative pressure is formed there, which prompts the carbon dioxide in the breathable cylinder 712 to pass through quickly, and the high carbon dioxide air is stored in the exhaust area at the top of the first partition 74 through the first one-way exhaust valve 79. When moving to the left, the high carbon dioxide air in the exhaust area enters the second air cover 73 through the third exhaust one-way valve 717. At the same time, the rubber piston block 78 sucks the air at the oxygen-enriched membrane sleeve 715 through the second one-way exhaust valve 710 and the conduit 711, forming a negative pressure to allow oxygen to pass through, and the oxygen-enriched air The air enters the air extraction area through the second one-way exhaust valve 710 and the conduit 711. When the mobile end moves right again, the oxygen-enriched air enters the second air hood 73 through the fourth exhaust one-way valve 718. Due to the isolation effect of the third partition plate 719 in the second air hood 73, the high carbon dioxide air and the oxygen-enriched air will not mix, and the air supply mechanism 7 continuously generates and transports the high carbon dioxide air and the oxygen-enriched air to the second air hood 73 for storage. In addition, the air in the air cylinder 712 enters the second rubber cover 62 through the automatic pressure relief valve 716, the heat insulation cover 91 and the second air pipe 15. Since the automatic pressure relief valve 716 requires a certain air pressure to exhaust, the carbon dioxide and oxygen in the air in the air cylinder 712 can be reliably separated. Finally, the air is ejected from the air nozzle 63 of the second rubber cover 62 to jet and cool the welding area of ​​the aluminum alloy weldment to avoid excessive heat accumulation in the welding area of ​​the aluminum alloy weldment and high-temperature softening and deformation.

[0044] When the staff uses the welding tongs to weld, the PLC controller 76 controls the first electric push rod 41, the second electric push rod 77, the motor 43 and the micro air pump 724 to start, and the motor 43 rotates the wire grinding sleeve 45 through the rotating rod 44. The moving end of the first electric push rod 41 pushes the connecting frame 42 downward, and the rotating wire grinding sleeve 45 cleans the aluminum alloy welded part welding seam with a thin layer of aluminum oxide. Specifically, when the aluminum alloy welded part is welded, in order to ensure the firmness of the welding, a chamfer will be opened at the welding position of the aluminum alloy welded part, and the two During the welding process of the aluminum alloy welded parts welded to each other, the two chamfers of the welding area will form a "V"-shaped welding seam structure. After that, the wire grinding sleeve 45 can effectively clean the aluminum oxide surface of the "V"-shaped welding area. Then, the PLC controller 76 controls the moving end of the first electric push rod 41 to stop moving downward. At the same time, the PLC controller 76 also controls the first solenoid valve 720 to be powered on and turned on. Then, the high carbon dioxide air stored in the second gas hood 73 is sprayed along the first air pipe 14, the first rubber hood 61 and the air nozzle 63 to the wire grinding sleeve 4 5, high carbon dioxide air is used to form a protective air film layer on the surface of the aluminum alloy weldment after cleaning the aluminum oxide. The protective air film layer can effectively prevent the aluminum oxide surface from contacting with a large amount of oxygen to produce a large amount of aluminum oxide after grinding, so that the aluminum alloy weldment is not affected by the high melting point of aluminum oxide when welding, and no higher temperature is required to complete the welding of the aluminum alloy weldment, thereby avoiding the rapid conduction and diffusion of welding heat in the aluminum alloy matrix of the aluminum alloy weldment, so that the welding area of ​​the aluminum alloy weldment will not have obvious thermal expansion and contraction, thereby avoiding the occurrence of welding defects such as deformation of the aluminum alloy weldment, and the first air pressure sensor 722 also detects the air pressure of the high carbon dioxide air in real time, and sends it to the PLC controller 76 in the form of an electrical signal. If the detected air pressure value is lower than the high carbon dioxide air low pressure threshold preset by the PLC controller 76, the PLC controller 76 controls the reciprocating speed of the moving end of the second electric push rod 77 to accelerate according to the electrical signal sent by the first air pressure sensor 722, thereby generating more high carbon dioxide air to enter the second air hood 73 for storage and standby;

[0045] When the temperature value detected by the infrared temperature sensor 55 exceeds the high temperature threshold value preset by the PLC controller 76, the PLC controller 76 controls the semiconductor refrigeration plate 92 to start, and the cooling side of the semiconductor refrigeration plate 92 reduces the temperature of the metal mesh plate 93, and then the air ejected from the automatic pressure relief valve 716 is cooled by the low-temperature metal mesh plate 93, and the cooled air is then ejected to the welding area of ​​the aluminum alloy weldment through the second air pipe 15, the second rubber cover 62 and the air nozzle 63, and at the same time, part of the air in the heat insulation cover 91 is also ejected to the heat dissipation side of the semiconductor refrigeration plate 92 through the L-shaped capillary 94, thereby accelerating the heat dissipation effect of the semiconductor refrigeration plate 92, thereby The cooling effect of the semiconductor refrigeration sheet 92 is ensured, and the cooling effect of the aluminum alloy welded parts can be further accelerated at this time, so as to avoid the aluminum alloy welded parts from accumulating heat too quickly due to the high thermal conductivity and linear expansion coefficient, thereby causing deformation defects of the aluminum alloy welded parts. This mechanism enables the welding auxiliary error-proofing device to not only have the function of continuously cleaning the aluminum oxide on the surface of the welding area of ​​the aluminum alloy welded parts, but also has the function of efficient heat dissipation protection in the welding area of ​​the aluminum alloy welded parts, thereby avoiding the aluminum alloy welded parts from accumulating too much heat due to high heat diffusion, thereby effectively improving the reliability, quality and qualified rate of welding of aluminum alloy welded parts of new energy vehicles;

[0046] When the welding auxiliary error-proofing device is in use, the worker can also wear an air purification mask 82 with a third air pipe 81. The air purification mask 82 is mainly composed of a protective mask, an air dust filtering structure and goggles for welding glare protection. The protective mask can block external dust from approaching the worker's face, and the air dust filtering mechanism can purify the air breathed by the worker to ensure the worker's health. The goggles can reduce the damage of welding glare to the worker's eyes, and the PLC controller 76 controls the second solenoid valve 721 to be powered on and turned on. At this time, the oxygen-enriched air in the second air hood 73 is transported along the third air pipe 81 to the inside of the air purification mask 82. The oxygen-enriched air flow can cool and dry the worker's face and reduce discomfort, and can also ensure sufficient oxygen supply to avoid dizziness. A large amount of airflow is sprayed into the air purification mask 82 to reduce the probability of filter element clogging and ensure its continuous use. The second air pressure sensor 723 also detects the air pressure of oxygen-enriched air. If the oxygen-enriched air pressure detected by the second air pressure sensor 723 is lower than the oxygen-enriched air low pressure threshold preset by the PLC controller 76, the PLC controller 76 also controls the reciprocating speed of the moving end of the second electric push rod 77 to increase, so that the second electric push rod 77 cooperates with other components in the air supply mechanism 7 to produce more oxygen-enriched air and transport it to the second air hood 73 for storage and standby. This mechanism enables the welding auxiliary error-proofing device to improve the comfort of the staff in the welding operation of aluminum alloy welds, avoid the situation of welding operation errors of aluminum alloy welds due to discomfort, thereby improving the reliability, quality and qualified rate of welding of aluminum alloy welds of new energy vehicles.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A welding auxiliary error-proofing device for welding parts of new energy vehicles, comprising a mounting tube (1), characterized in that: The wall of the installation cylinder (1) is provided with two symmetrically distributed threaded holes, and the hole wall of the threaded hole is threadedly connected with a positioning bolt (2), the inner end of the positioning bolt (2) is connected with an arc-shaped clamping block (3) via a rolling bearing, the outer wall of the arc-shaped clamping block (3) is fixedly sleeved with a rubber sleeve (10), the outer wall of the rubber sleeve (10) is fixedly connected to the inner wall of the installation cylinder (1), and the inner wall of the installation cylinder (1) is fixedly connected with a weld aluminum oxide cleaning mechanism (4); A rotary bearing (11) and a rubber ring (12) are fixedly sleeved on the outer wall of the mounting cylinder (1), and an L-shaped plate (13) and a temperature detection mechanism (5) are fixedly connected to the outer wall of the outer ring of the rotary bearing (11); The outer wall of the L-shaped plate (13) is fixedly connected with a universal jet mechanism (6); The two universal jet mechanisms (6) are respectively fixedly connected to a first air pipe (14) and a second air pipe (15); the top ends of the first air pipe (14) and the second air pipe (15) are commonly connected to an air supply mechanism (7); One of the air outlet ends of the air supply mechanism (7) is fixedly connected to an auxiliary mechanism (8).

2. The welding auxiliary error-proofing device for welding parts of new energy vehicles according to claim 1 is characterized in that: The weld alumina cleaning mechanism (4) comprises a first electric push rod (41) fixedly connected to the inner wall of the mounting tube (1); the bottom end of the first electric push rod (41) is fixedly connected to a connecting frame (42); the inner wall of the connecting frame (42) is fixedly connected to a motor (43); the rotating end of the motor (43) passes through the lower surface of the connecting frame (42) and is fixedly connected to a rotating rod (44) via a connector; the bottom end of the rotating rod (44) is fixedly connected to a wire grinding sleeve (45) for grinding the weld alumina.

3. The welding auxiliary error-proofing device for welding parts of new energy vehicles according to claim 1 is characterized in that: The temperature detection mechanism (5) comprises an arc-shaped plate (51) fixedly connected to the outer wall of the outer ring of the rotary bearing (11); an adjustment through hole is formed on the outer wall of the arc-shaped plate (51); a screw rod (52) is movably connected to the hole wall of the adjustment through hole; a retaining ring (53) is fixedly sleeved on the rod wall of the screw rod (52); a positioning nut (54) is threadedly connected to the rod wall of the screw rod (52); and an infrared temperature sensor (55) is fixedly connected to the side end of the screw rod (52).

4. The welding auxiliary error-proofing device for welding parts of new energy vehicles according to claim 1 is characterized in that: The universal jet mechanism (6) comprises a first rubber cover (61) and a second rubber cover (62) fixedly connected to the outer wall of the L-shaped plate (13); the outer wall of the first rubber cover (61) is fixedly connected to the air outlet end of the first air pipe (14); the outer wall of the second rubber cover (62) is fixedly connected to the air outlet end of the second air pipe (15); the side ends of the first rubber cover (61) and the second rubber cover (62) are fixedly connected to the jet nozzle (63); the inner walls of the first rubber cover (61) and the second rubber cover (62) are fixedly connected to two directional iron wires (64); the side ends of the directional iron wires (64) are fixedly connected to the outer wall of the L-shaped plate (13).

5. The welding auxiliary error-proofing device for welding parts of new energy vehicles according to claim 1 is characterized in that: The gas supply mechanism (7) comprises a bottom plate (71), the upper surface of the bottom plate (71) is fixedly connected to a first gas hood (72), the upper surface of the first gas hood (72) is fixedly connected to a second gas hood (73), the inner wall of the first gas hood (72) is fixedly connected to a first partition plate (74) and a second partition plate (75), the internal cavity of the first gas hood (72) is divided into a gas extraction zone, a carbon dioxide separation zone and an oxygen separation zone by the first partition plate (74) and the second partition plate (75), the upper surface of the bottom plate (71) is fixedly connected to a PLC controller (76), the outer wall of the first gas hood (72) located in the gas extraction zone is fixedly embedded with a second electric push rod (77), the reciprocating end of the second electric push rod (77) is fixedly connected to A rubber piston block (78), wherein the rubber outer wall of the rubber piston block (78) is in sealing contact with the inner wall of the first gas hood (72) and the upper surface of the first partition (74); the outer walls at both ends of the first partition (74) are fixedly connected with a first one-way exhaust valve (79) and a second one-way exhaust valve (710); the air inlet end of the second one-way exhaust valve (710) is fixedly connected with a conduit (711); the air inlet end of the conduit (711) passes through the second partition (75) and is connected with the cavity of the oxygen separation zone; the inner wall of the first gas hood (72) is fixedly connected with two air permeable cylinders (712); the outer walls of the two air permeable cylinders (712) are commonly connected with an air delivery pipe (713); the outer wall of the second partition (75) is provided with a gas delivery pipe (713) connected to the gas delivery pipe (713); ), wherein a carbon dioxide permeable membrane (714) is fixedly sleeved on the outer wall of one of the breathable cylinders (712), and the carbon dioxide permeable membrane (714) is located inside the cavity of the carbon dioxide separation zone; an oxygen-enriched membrane sleeve (715) is fixedly sleeved on the outer wall of the other breathable cylinder (712), and the oxygen-enriched membrane sleeve (715) is located inside the cavity of the oxygen separation zone; an automatic pressure relief valve (716) is fixedly connected to the outer wall of the first gas hood (72) located inside the oxygen-enriched membrane sleeve (715); a cooling mechanism (9) is fixedly connected to the outer wall of the first gas hood (72) located on the automatic pressure relief valve (716); a third exhaust check valve (717) and a fourth exhaust check valve (718) are fixedly connected to the top of the first gas hood (72); The second gas hood (73) is provided with a first solenoid valve (720) and a second solenoid valve (721). The second gas hood (73) is provided with a first solenoid valve (720) and a second solenoid valve (721). The second solenoid valve (720) and the second solenoid valve (721) are connected to the first gas hood (14). The second solenoid valve (721) and the second solenoid valve (721) are connected to the first gas hood (73). The second gas hood (73) is provided with a first solenoid valve (720) and a second solenoid valve (721). The second solenoid valve (720) and the second solenoid valve (721) are connected to the first gas hood (14). The second solenoid valve (721) and the second solenoid valve (721) are connected to the first gas hood (73).The outer wall of the first air hood (72) is fixedly connected to a micro air pump (724), and the air outlet of the micro air pump (724) passes through the inner wall of the first air hood (72) and is located on the inner side of the carbon dioxide permeable membrane (714).

6. A welding auxiliary error-proofing device for welding parts of new energy vehicles according to claim 5, characterized in that: The cooling mechanism (9) comprises a heat insulating cover (91) fixedly connected to the outer wall of the first air cover (72), a semiconductor cooling sheet (92) being fixedly embedded at the top end of the heat insulating cover (91), a plurality of metal mesh plates (93) being fixedly connected to the cooling side of the semiconductor cooling sheet (92), an air inlet end of the second air pipe (15) being fixedly connected to the side end of the heat insulating cover (91), an L-shaped capillary (94) being fixedly connected to the top end of the heat insulating cover (91), and an air outlet end of the L-shaped capillary (94) being located on the outside of the heat dissipation side of the semiconductor cooling sheet (92).

7. The welding auxiliary error-proofing device for welding parts of new energy vehicles according to claim 5 is characterized in that: The auxiliary mechanism (8) comprises a third air pipe (81) fixedly connected to the air outlet end of the second solenoid valve (721), and the air outlet end of the third air pipe (81) is fixedly connected to an air purification mask (82).

8. According to the welding auxiliary error-proofing device for welding parts of new energy vehicles as described in claim 1, the inner wall of the top end of the mounting cylinder (1) is fixedly connected with an annular sealing airbag (16), the outer wall of the outer ring of the rotating bearing (11) is fixedly connected with a U-shaped block (17), and the outer wall of the U-shaped block (17) is provided with a threaded hole, and the hole wall of the threaded hole is threadedly connected with a limit bolt (18) that matches the rubber ring (12).

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