Welding device and welding process for an explosion-proof box

Abstract

The application relates to a welding device and welding process of an explosion-proof box, and belongs to the technical field of welding.The welding device comprises a workbench, a welding gun, a blowing pipe and a sound wave directional emitter, the explosion-proof box is arranged on the upper end face of the workbench, the welding gun is slidably arranged on the workbench, a driving assembly is further arranged on the workbench, the blowing pipe is arranged on the welding gun, one end of the blowing pipe is opposite to a welding seam, the other end of the blowing pipe is connected with a gas source in communication, the sound wave directional emitter is arranged on the welding gun, the output end of the sound wave directional emitter is opposite to the welding seam, the sound wave directional emitter is located on the side, away from the welding gun, of the blowing pipe, the sound wave directional emitter is located at the foremost end in the moving direction of the welding gun, and the sound wave directional emitter can emit and receive sound waves so as to detect whether there are tiny particles in the welding seam and make the tiny particles vibrate.The application has the effect of reducing dust and tiny particles in the welding seam as much as possible, thereby improving the welding quality and production quality of the whole explosion-proof box.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of welding, in particular to a welding device and welding process for an explosion-proof box. BACKGROUND

[0002] The explosion-proof box is a special box body for installing instrument equipment, which can protect the equipment from explosion and fire in a dangerous environment. It is mainly applied to places where flammable, explosive gases or dust exist, such as petroleum chemical industry, coal mine, aerospace, etc., to ensure the safety and stability of industrial production.

[0003] In the process of producing the explosion-proof box, welding is an essential step. The welding device in the prior art usually includes a workbench for placing the explosion-proof box, a welding gun slidingly installed on the workbench, and a driving assembly driving the welding gun to move. When the weld of the explosion-proof box needs to be welded, the output end of the welding gun is first aligned with the weld, and then the driving assembly is started to drive the welding gun to move along the length direction of the weld, so that the welding gun welds the entire weld of the explosion-proof box.

[0004] However, in the above-mentioned technology, since there are dust and small particles in the space of the welding place, there are also dust and small particles in the weld of the explosion-proof box. These dust and small particles mixed in the molten pool at the weld will reduce the connection stability between the two plates, resulting in poor welding quality of the explosion-proof box, thereby reducing the production quality of the explosion-proof box. SUMMARY

[0005] The purpose of the present application is to provide a welding device and welding process for an explosion-proof box to minimize the dust and small particles in the weld, thereby improving the production quality of the entire explosion-proof box.

[0006] In a first aspect, the welding device for an explosion-proof box provided by the present application adopts the following technical solution:

[0007] a workbench having an upper end face on which an explosion-proof box is placed;

[0008] a welding gun slidingly installed on the workbench, the workbench further being provided with a driving assembly for driving the welding gun to move along the length direction of the weld on the explosion-proof box, and the driving assembly being further capable of driving the welding gun to move in the direction of approaching or moving away from the box;

[0009] a blowing pipe installed on the welding gun, one end of the blowing pipe being opposite to the weld, and the other end of the blowing pipe being in communication with a gas source;

[0010] A sound wave directional transmitter is installed on the welding gun, an output end of the sound wave directional transmitter is opposite to the welding seam, the sound wave directional transmitter is located on a side of the blowing pipe far away from the welding gun, the sound wave directional transmitter is located at a front end in a moving direction of the welding gun, the sound wave directional transmitter can directionally emit and receive sound waves so as to detect whether there is a tiny particle in the welding seam and make the tiny particle vibrate.

[0011] Optionally, the blowing pipe is provided with an adjusting assembly, the adjusting assembly is used for adjusting a pipe diameter of the blowing pipe so as to increase or decrease a flow intensity of the gas sprayed from the blowing pipe.

[0012] Optionally, the adjusting assembly comprises adjusting plates, the adjusting plates are uniformly and spacedly arranged around the blowing pipe axis, the adjusting plates are hinged to one end of the blowing pipe close to the welding seam, the adjusting plates can rotate along the blowing pipe axis to enclose a columnar pipe, a pipe diameter of the pipe close to the welding seam is smaller, a winding drum is rotationally arranged on the welding gun, a tightening line is wound on the winding drum, the one end of the adjusting plate close to the welding seam is provided with a threading groove, one end of the tightening line is connected to an outer peripheral wall of the winding drum, the other end of the tightening line sequentially passes through the threading grooves of each adjusting plate and is connected to a groove wall of the threading groove of the first adjusting plate, a rotating motor is arranged on the welding gun, an output shaft of the rotating motor is coaxially and fixedly connected to the winding drum.

[0013] Optionally, a polishing assembly is arranged on the welding gun, the polishing assembly is located on a side of the welding gun far away from the blowing pipe.

[0014] Optionally, the polishing assembly comprises a polishing disc, the polishing disc is rotationally connected to the welding gun, a polishing motor is arranged on the welding gun, an output shaft of the polishing motor is coaxially and fixedly connected to the polishing disc, a rotating direction of the polishing disc can make the welding slag move away from an output end of the welding gun.

[0015] Optionally, a collecting assembly is arranged on the welding gun, the collecting assembly can collect the welding slag produced by the polishing disc.

[0016] Optionally, the collecting assembly comprises a collecting pipe, one end of the collecting pipe is communicated with a peripheral wall of the blowing pipe, the other end of the collecting pipe is opposite to the polishing disc, a collecting box is communicated with a side wall of the collecting pipe, a breathable film is arranged at a position close to a communication position of the collecting box and the collecting pipe.

[0017] Optionally, a positioning assembly is arranged on the workbench, the positioning assembly is used for fixing a position of the explosion-proof box.

[0018] Optionally, the positioning assembly is provided with multiple groups, and the multiple groups of positioning assemblies surround the explosion-proof box.

[0019] In a second aspect, the application provides a welding process of an explosion-proof box, comprising the following steps:

[0020] S1: placing the explosion-proof box subjected to spot welding on a workbench, and positioning the explosion-proof box through a positioning assembly;

[0021] S2: starting a gas source and a sound wave directional emitter, so that the blowing pipe cleans dust and tiny particles in the weld, the sound wave directional emitter emits ultrasonic waves to detect whether there are tiny particles difficult to clean in the weld, when it is detected that there are tiny particles, the ultrasonic waves emitted by the sound wave directional emitter can make the tiny particles vibrate to facilitate cleaning, at the same time, an adjusting assembly is started, so that the pipe diameter of the blowing pipe near the weld is smaller, the flow intensity of the gas sprayed by the blowing pipe is increased, the wind power is enhanced, and the cleaning ability of the tiny particles in the weld is enhanced;

[0022] S3: starting a welding gun and a polishing assembly, so that the welding gun welds the weld of the explosion-proof box, the polishing assembly polishes the welded weld, a collecting pipe collects welding slag, and a driving assembly is started to drive the blowing pipe, the sound wave directional emitter, the welding gun, the polishing assembly and the collecting assembly to move along the length direction of the weld.

[0023] In summary, the application has at least one of the following beneficial technical effects:

[0024] 1. The arrangement of the blowing pipe can clean the dust and small particles in the weld of the explosion-proof box in advance, so that the subsequent welding gun can weld the cleaned weld, so as to avoid the dust and small particles mixed in the molten pool of the weld, so as to avoid the welding quality of the weld, and to improve the welding quality and production quality of the explosion-proof box; in addition, the directional sound wave emitter can emit directional ultrasonic waves similar to light column, and its output end is opposite to the weld; when there are some small particles with large volume in the weld, these small particles with large volume are easy to be stuck in the weld, and the blowing pipe is difficult to clean them, but when the ultrasonic waves emitted by the directional sound wave emitter collide with the small particles stuck in the weld, the small particles stuck in the weld will vibrate, and the vibrating small particles will collide or rub with the inner wall of the weld, so that the volume of the small particles stuck in the weld is ground or broken into smaller particles, therefore, the small particles are easy to be blown away by the gas blown by the blowing pipe, so as to improve the cleaning effect of the blowing pipe on the dust and small particles in the weld, and further improve the welding quality and production quality of the explosion-proof box;

[0025] 2. The directional sound wave emitter can not only emit directional ultrasonic waves to make the small particles vibrate, but also can detect whether there are small particles in the weld; when the directional sound wave emitter detects that there are small particles, the directional sound wave emitter transmits a signal to the control center, and the control center starts the adjusting assembly to reduce the diameter of the blowing pipe, so that the flow speed of the gas blown from the blowing pipe is increased; so as to improve the wind power of the gas blown from the blowing pipe, and further improve the cleaning effect of the blowing pipe on the dust and small particles in the weld, and further improve the welding quality and production quality of the explosion-proof box;

[0026] 3. The arrangement of the polishing assembly can make the welding work and the polishing work be carried out at the same time, so as to greatly improve the production efficiency of the explosion-proof box;

[0027] 4. The collecting pipe in the collecting assembly is connected with the blowing pipe, and the collecting pipe can suck the welding slag into the collecting pipe; the high-speed gas in the blowing pipe forms a negative pressure in the collecting pipe, so that the end of the collecting pipe close to the polishing disc has a strong suction force, so as to collect the welding slag on the polishing disc and the welding joint treated by polishing, so as to avoid the welding slag from entering the weld, so as to improve the welding quality and production quality of the explosion-proof box to a certain extent; in addition, the collecting pipe can also collect the smoke generated by the polishing work, so as to improve the working environment quality of the workers. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1is a schematic diagram of the overall structure of embodiment 1 of the present application;

[0029] Figure 2 is a schematic diagram of the structure of the support plate in the embodiment of the present application;

[0030] Figure 3 is a schematic diagram of the structure of the adjusting assembly in the embodiment of the present application;

[0031] Figure 4 is Figure 3 is an enlarged schematic diagram of A in FIG. 1;

[0032] Figure 5 is a schematic diagram of the structure of the positioning assembly in the embodiment of the present application;

[0033] Figure 6 is a schematic diagram of the structure of the collecting assembly in embodiment 1 of the present application;

[0034] In the figure, 1 is a workbench; 11 is a sliding rail; 2 is a driving assembly; 21 is a screw rod; 22 is a nut; 23 is a driving motor; 24 is a support plate; 25 is a hydraulic cylinder; 3 is a welding gun; 4 is a blowing pipe; 5 is a sound wave directional emitter; 6 is an adjusting assembly; 61 is an adjusting plate; 611 is a threading groove; 62 is a stand column; 63 is a winding drum; 64 is a tightening wire; 65 is a rotating motor; 7 is a polishing assembly; 71 is a support column; 72 is a polishing disc; 73 is a polishing motor; 8 is a collecting assembly; 81 is a collecting pipe; 82 is a collecting box; 83 is a breathable film; 9 is a positioning assembly; 91 is a positioning column; 911 is a positioning groove; 92 is a positioning block; 93 is a return spring; and 10 is an explosion-proof box. DETAILED DESCRIPTION

[0035] The following will be described in detail in combination with the accompanying drawings. Figures 1-6 The present application will be further described in detail. EMBODIMENT 1

[0036] A welding device of an explosion-proof box, referring to Figure 1 and Figure 2 , comprises a workbench 1, a welding gun 3, a blowing pipe 4, and a sound wave directional emitter 5.

[0037] In the embodiment, the workbench 1 is fixedly installed on the ground, the upper end surface of the workbench 1 is rotationally connected with a rotating disc, the rotating disc is horizontally arranged, the inside of the workbench 1 is provided with a motor (not shown in the figure) for driving the rotating disc to rotate, the rotating disc is placed with the explosion-proof box 10, and the upper end surface of the rotating disc is provided with the positioning assembly 9 for fixing the explosion-proof box 10.

[0038] The support plate 24 is slidably arranged on the workbench 1, the welding gun 3 is fixedly installed on the upper end face of the support plate 24, and the output end of the welding gun 3 faces the weld on the explosion-proof box 10. The workbench 1 is also provided with a driving assembly 2, which can drive the support plate 24 to move along the length direction of the weld on the explosion-proof box 10, and the driving assembly 2 can also drive the support plate 24 to move towards or away from the explosion-proof box 10.

[0039] The blowing pipe 4 is fixedly installed on the upper end face of the support plate 24, and a connecting rod is arranged between the blowing pipe 4 and the support plate 24. One end of the blowing pipe 4 faces the weld, and the other end of the blowing pipe 4 is connected with a gas source (not shown in the figure). In this embodiment, the gas source can be a nitrogen generator or a nitrogen storage device, and the nitrogen therein can also be dry inert gas such as carbon dioxide. Therefore, the gas blown out of the blowing pipe 4 can not only clean the dust and small particles in the weld of the explosion-proof box 10, but also prevent the welding area from being oxidized by oxygen in the air, thereby improving the welding quality. In addition, the inert gas can also accelerate the cooling of the welding area, thereby effectively controlling the grain coarsening and the size of the heat-affected zone during the welding process, which helps to obtain high-quality welds and improve the strength and toughness of the welded parts.

[0040] The sound wave directional emitter 5 is fixedly installed on the support plate 24, the output end of the sound wave directional emitter 5 faces the weld, and the sound wave directional emitter 5 is located on the side of the blowing pipe 4 away from the welding gun 3. The sound wave directional emitter 5 is located at the most front end of the welding gun 3 in the moving direction of the weld along the length. The sound wave directional emitter 5 can emit and receive sound waves to detect whether there are small particles in the weld and make the small particles vibrate. The extension line of the output end of the sound wave directional emitter 5 is perpendicular to the straight line where the weld is located. The blowing pipe 4 and the sound wave directional emitter 5 are arranged at a certain angle. The intersection point of the extension line of the output end of the sound wave directional emitter 5 and the extension line of the axis of the blowing pipe 4 is located in the weld of the explosion-proof box 10.

[0041] The blowing pipe 4 is also provided with an adjusting assembly 6 for adjusting the pipe diameter of the blowing pipe 4 to increase or decrease the flow intensity of the gas blown out of the blowing pipe 4.

[0042] When the weld on the explosion-proof box 10 needs to be welded, the driving assembly 2 is started to drive the support plate 24 to move in the direction close to the explosion-proof box 10 until the output end of the welding gun 3 is in the same straight line with the weld on the explosion-proof box 10, at this time the output end of the air blowing pipe 4 and the sound wave directional emitter 5 are still a distance away from the explosion-proof box 10, the sound wave directional emitter 5 is opposite to one end of the weld on the explosion-proof box 10, the output end of the polishing assembly 7 and the output end of the welding gun 3 are in the same horizontal line, at this time the polishing assembly 7 is located on one side of the explosion-proof box 10 and does not touch the explosion-proof box 10, then the sound wave directional emitter 5 and the gas source connected with the air blowing pipe 4 are started, the gas blown out by the air blowing pipe 4 can clean the dust and small particles on the weld of the explosion-proof box 10, so as to avoid the situation that the dust and small particles are mixed in the molten pool at the weld to cause the welding quality of the weld, thereby improving the welding quality and production quality of the weld of the explosion-proof box 10; at the same time, since the air blowing pipe 4 has a certain pipe diameter, the gas blown out from the air blowing pipe 4 can cover a certain area of the weld, therefore, the air blowing pipe 4 can clean a certain area in the weld, and this area is larger than the area in the weld that can be detected by the sound wave directional emitter 5, after the air blowing pipe 4 cleans the dust and small particles in the weld, at this time the sound wave directional emitter 5 can emit ultrasonic waves to the cleaned area in the weld of the explosion-proof box 10, when the emitted ultrasonic waves encounter small particles, the ultrasonic waves will bounce back, then the sound wave directional emitter 5 will also receive the ultrasonic waves at the same time, so as to judge whether there are still small particles in the cleaned area in the weld of the explosion-proof box 10.

[0043] When the acoustic directional emitter 5 detects that there are still tiny particles in the cleaned weld area, it means that the volume of these tiny particles is relatively large, or the tiny particles are stuck in the weld, making it difficult to remove these tiny particles, so at this time the acoustic directional emitter 5 will transmit this signal to the control center of the welding device, and then the control center adjusts the diameter of the blowing pipe 4 through the adjusting assembly 6, the reduction of the diameter of the blowing pipe 4 can increase the flow speed of the gas sprayed from the blowing pipe 4; thereby improving the wind power of the gas sprayed from the blowing pipe 4, and further improving the cleaning effect of the blowing pipe 4 on the dust and tiny particles in the weld, and further improving the welding quality and production quality of the weld of the explosion-proof box 10; At the same time, the ultrasonic waves emitted by the acoustic directional emitter 5 not only can detect whether there are tiny particles difficult to clean in the weld, but also can make the tiny particles stuck in the weld or the tiny particles with large volume vibrate, the vibrating tiny particles will collide or rub with the inner wall of the weld, so that the volume of the tiny particles stuck in the weld is ground or broken into smaller particles, therefore, the tiny particles with smaller volume are easily blown away by the gas sprayed from the blowing pipe 4, thereby further improving the cleaning effect of the blowing pipe 4 on the dust and tiny particles in the weld, and further improving the welding quality and production quality of the weld of the explosion-proof box 10; When the tiny particles in the weld are cleaned, the control center will adjust the diameter of the blowing pipe 4 to the initial state through the adjusting assembly 6, so as to clean the next area in the weld.

[0044] Wherein, after starting the acoustic directional emitter 5 and the gas source connected with the blowing pipe 4, the welding gun 3 and the driving assembly 2 are started, the driving assembly 2 drives the support plate 24 to move along the length direction of the weld, thereby driving the acoustic directional emitter 5, the blowing pipe 4, the welding gun 3 and the polishing assembly 7 to move from one end of the weld to the other end of the weld, in the moving process of the acoustic directional emitter 5 and the blowing pipe 4, the acoustic directional emitter 5 and the blowing pipe 4 can clean the dust and tiny particles in the weld area as much as possible, then the welding gun 3 welds the cleaned weld area, and the polishing assembly 7 can immediately polish the weld area after the welding by the welding gun 3, the synchronous welding and polishing can greatly improve the production efficiency of the explosion-proof box 10; At the same time, the gas sprayed by the blowing pipe 4 can also accelerate the air circulation in the weld, thereby speeding up the cooling speed of the welded part, so as to facilitate the polishing work of the polishing assembly 7 on the welded part.

[0045] It should be noted that the sound wave directional transmitter 5 in the embodiment adopts an audio sharp 100X remote sound wave directional transmitter 5, the width and height of the sound wave directional transmitter 5 are both 35.6 cm, and the thickness is 16.5 cm, which has a relatively small volume and is suitable for use in the welding device in the embodiment. The sound wave directional transmitter 5 mainly includes an ultrasonic transducer, a power amplifier and an array generator. The ultrasonic transducer can convert an electrical signal into mechanical vibration to generate ultrasonic waves. The power amplifier is mainly used for amplifying the signal generated by the signal source and transmitting the amplified signal to the ultrasonic transducer. By adjusting the phase and amplitude of each ultrasonic transducer in the array sound generator, directional emission of sound waves can be achieved. The beam forming technology uses the interference principle of physics to focus multiple ultrasonic beams in a specific direction to form a directional sound beam, thereby achieving directional emission of sound waves as a whole. Unlike the prior art, the sound wave directional transmitter 5 in the embodiment is also provided with a sound wave receiver to detect whether there are small particles that are difficult to clean in the weld.

[0046] In addition, the sound wave beam emitted by the sound wave directional transmitter 5 in the embodiment does not act on the explosion-proof box 10. Since the sound wave beam acting on the explosion-proof box 10 can cause the explosion-proof box 10 to vibrate itself, the vibration of the explosion-proof box 10 itself can easily cause the welded part on the explosion-proof box 10 to break and the welding work to fail. Therefore, the sound wave beam emitted by the sound wave directional transmitter 5 in the embodiment is subjected to specific debugging, so that the emitted sound wave beam only passes through the weld area on the explosion-proof box 10.

[0047] Continuing to refer to Figure 1 The driving assembly 2 includes a lead screw 21 and a nut 22.

[0048] The workbench 1 is provided with a sliding rail 11, and the nut 22 is in sliding connection with the sliding rail 11. The lead screw 21 is rotationally installed on the workbench 1, and the nut 22 is in threaded connection with the lead screw 21. The workbench 1 is further provided with a driving motor 23, the output shaft of the driving motor 23 is fixedly connected with the lead screw 21 in a same axis, a supporting plate 24 is slidingly installed on the upper end face of the nut 22, and the upper end face of the nut 22 is further provided with a hydraulic cylinder 25, the output shaft of the hydraulic cylinder 25 is fixedly connected with the supporting plate 24. The axis of the lead screw 21 is arranged perpendicularly to the axis of the hydraulic cylinder 25. When it is needed to drive the welding torch 3 to move along the length direction of the weld, the driving motor 23 is started to drive the lead screw 21 to rotate, thereby achieving the effect that the welding torch 3 moves along the length direction of the weld. When it is needed to move the welding torch 3 towards or away from the explosion-proof box 10, the hydraulic cylinder 25 is started, the output shaft of the hydraulic cylinder 25 is extended, the welding torch 3 moves towards the explosion-proof box 10, and the output shaft of the hydraulic cylinder 25 is retracted, the welding torch 3 moves away from the explosion-proof box 10.

[0049] Referring to Figure 3and Figure 4 The adjusting assembly 6 comprises an adjusting plate 61.

[0050] The adjusting plate 61 is provided in plurality, and in the embodiment, four adjusting plates 61 are provided and arranged uniformly around the axis of the blowing pipe 4. The four adjusting plates 61 are hingedly connected to one end of the blowing pipe 4 close to the weld, and the hinged connection between the adjusting plate 61 and the blowing pipe 4 is provided with a hinge spring (not shown in the figure). The four adjusting plates 61 can rotate along the axis of the blowing pipe 4 to enclose a columnar pipe, and the pipe diameter close to the weld is smaller. Two vertical columns 62 are arranged on the support plate 24, and the two vertical columns 62 are arranged oppositely. A winding drum 63 is rotatably arranged between the two vertical columns 62. A tightening line 64 is wound on the winding drum 63. A threading groove 611 is formed on one end of the four adjusting plates 61 close to the weld. One end of the tightening line 64 is fixedly connected to the outer peripheral wall of the winding drum 63. The other end of the tightening line 64 passes through the threading grooves 611 of the adjusting plates 61 in sequence and is fixedly connected to the groove wall of the threading groove 611 of the first adjusting plate 61. One of the vertical columns 62 is provided with a rotating motor 65. The output shaft of the rotating motor 65 is coaxially fixedly connected to the winding drum 63.

[0051] When the acoustic wave directional emitter 5 detects the existence of the tiny particles in the weld, the acoustic wave directional emitter 5 sends a signal to the control center. The control center controls the output shaft of the rotating motor 65 to rotate forward, driving the winding drum 63 to rotate forward, so that the tightening line 64 is wound on the outer peripheral wall of the winding drum 63. In the process of winding, the tightening line 64 exerts pressure on the groove wall of the threading groove 611, driving the four adjusting plates 61 to rotate along the axis of the blowing pipe 4 until the four adjusting plates 61 enclose a columnar pipe. The pipe diameter of the columnar pipe is smaller and smaller along the direction close to the weld. At this time, the hinge spring between the adjusting plate 61 and the blowing pipe 4 is in a taut state. Therefore, the flow speed of the gas sprayed from the columnar pipe is increased. Conversely, when the acoustic wave directional emitter 5 does not detect the existence of the tiny particles in the weld, the rotating motor 65 reverses, driving the winding drum 63 to reverse. At this time, the tightening line 64 wound on the winding drum 63 is in a relaxed state. The tightening line 64 no longer exerts pressure on the adjusting plate 61. The hinge spring is reset, driving the adjusting plate 61 to return to the initial position. The columnar pipe does not exist. The flow speed of the gas blown from the blowing pipe 4 also returns to the original speed.

[0052] It should be noted that when the four adjusting plates 61 in the embodiment enclose a columnar pipe, the flow speed of the gas sprayed from the columnar pipe is increased. Due to the reduction of the gas outlet diameter, the action range of the sprayed gas is also reduced. The gas with high speed can be concentratedly sprayed on the tiny particles. The action of the gas blown from the blowing pipe 4 is stronger, further improving the cleaning effect of the blowing pipe 4 on the tiny particles.

[0053] With reference to Figure 2 and Figure 3 , the polishing assembly 7 comprises a polishing disc 72.

[0054] The support column 71 is fixedly arranged on the support plate 24, the polishing disc 72 is coaxially and rotatably arranged on the upper end surface of the support column 71, the support column 71 is internally provided with a polishing motor 73, the output shaft of the polishing motor 73 is coaxially and fixedly connected with the polishing disc 72, and the rotating direction of the polishing disc 72 can move the welding slag away from the output end of the welding gun 3.

[0055] When the driving assembly 2 drives the output end of the welding gun 3 to move to the same straight line as the welding seam on the explosion-proof box 10, at this time, the closest point of the polishing disc 72 to the welding seam is also on the straight line where the welding seam is located, and the polishing motor 73 is started at the same time when the welding gun 3 is started, and after the welding gun 3 completes the welding on the welding seam, the polishing disc 72 can polish the part on the explosion-proof box 10 that has been welded by moving the welding gun 3 and the polishing disc 72, and the welding and polishing are performed at the same time, which greatly improves the production efficiency of the explosion-proof box 10; in addition, the polishing disc 72 in the embodiment rotates clockwise as shown in the figure, and the clockwise rotating polishing disc 72 can guide the residues generated during polishing to the welding seam that has not been welded when polishing the welding seam on the explosion-proof box 10, so as to avoid the residues generated during polishing from entering the welding seam that has not been welded, thereby avoiding the welding quality of the welding seam of the explosion-proof box 10 from being reduced, and further improving the welding quality and production quality of the explosion-proof box 10.

[0056] With reference to Figure 2 and Figure 6 , the support plate 24 is further provided with a collecting assembly 8 for collecting the welding slag generated by the polishing disc 72, and the collecting assembly 8 comprises a collecting pipe 81.

[0057] The collecting pipe 81 in the embodiment is arranged in an L shape, one end of the collecting pipe 81 is communicated with the peripheral wall of the blowing pipe 4, the other end of the collecting pipe 81 is opposite to the abutting position of the polishing disc 72 and the welding seam, the side wall of the collecting pipe 81 is communicated with a collecting box 82, the collecting box 82 is arranged on the support plate 24, and a breathable film 83 is arranged in the collecting pipe 81, and the breathable film 83 is arranged at a position close to the communication position between the collecting box 82 and the collecting pipe 81.

[0058] When the gas source is opened, the gas flow rate in the blowing pipe 4 will increase, and thus a negative pressure is formed in the collecting pipe 81. The end of the collecting pipe 81 close to the polishing disc 72 has a strong suction force, so that the collecting pipe 81 collects the welding slag on the polishing disc 72 and the welding joint after polishing, so as to avoid the welding slag from splashing into the welding joint as much as possible, thereby improving the welding quality and production quality of the welding joint of the explosion-proof box 10 to a certain extent. In addition, when the welding slag enters the collecting pipe 81, the welding slag will touch the gas-permeable film 83. Since the welding slag cannot pass through the gas-permeable film 83, and finally falls into the collecting box 82 under the action of gravity, the collection of the welding slag is realized as a whole.

[0059] With reference to Figure 1 and Figure 5 The positioning assembly 9 in the embodiment is provided with four groups, and the four groups of positioning assemblies 9 correspond to the four side edges of the explosion-proof box respectively. The positioning assembly 9 comprises a positioning column 91, a positioning block 92 and a reset spring 93.

[0060] The positioning column 91 is fixedly installed on the workbench 1. A positioning groove 911 is formed in the end of the positioning column 91 close to the explosion-proof box 10. The positioning block 92 is slidably inserted into the positioning groove 911. The end of the positioning block 92 away from the positioning groove 911 abuts against the explosion-proof box 10. The reset spring 93 is located in the positioning groove 911. One end of the reset spring 93 is connected to the groove wall of the positioning groove 911, and the other end of the reset spring 93 is connected to the positioning block 92.

[0061] When the explosion-proof box 10 needs to be placed on the workbench 1, the positioning block 92 is extruded in the direction close to the positioning column 91, and the positioning spring is in a compressed state. Then, the explosion-proof box 10 is placed between the four positioning blocks 92, and the positioning block 92 is no longer extruded. Under the reset of the positioning spring, the positioning block 92 moves in the direction close to the explosion-proof box 10 until the positioning block 92 abuts against the explosion-proof box 10, so that the positioning blocks 92 in the four positioning assemblies 9 horizontally position the explosion-proof box 10. Embodiment 2

[0062] A welding process of an explosion-proof box, according to the welding device of the explosion-proof box described above, comprising the following steps:

[0063] S1: placing the explosion-proof box 10 subjected to spot welding on the workbench 1, and then positioning the explosion-proof box 10 by the positioning assembly 9;

[0064] S2: the driving assembly 2 is started to drive the sound wave directional emitter 5, the blowing pipe 4, the welding gun 3, the polishing assembly 7 and the collecting assembly 8 to move in the direction close to the explosion-proof box 10 until the welding gun 3 abuts on the weld on the explosion-proof box 10, the gas source and the sound wave directional emitter 5 are started, the blowing pipe 4 is used to clean the dust and the small particles in the weld, the sound wave directional emitter 5 is used to emit the ultrasonic wave to detect whether the small particles difficult to clean exist in the weld, when the small particles are detected to exist, the ultrasonic wave emitted by the sound wave directional emitter 5 can make the small particles vibrate to facilitate the cleaning, at the same time, the adjusting assembly 6 is started to make the pipe diameter of the blowing pipe 4 close to the weld smaller, the flow intensity of the gas sprayed by the blowing pipe 4 is increased, the wind power is enhanced, and the cleaning ability of the small particles in the weld is enhanced;

[0065] When the small particles in the weld are cleaned, the adjusting assembly 6 is started again to adjust the pipe diameter of the blowing pipe 4 to return to the original state.

[0066] S3: the welding gun 3 and the polishing assembly 7 are started to make the welding gun 3 weld the weld of the explosion-proof box 10, the polishing assembly 7 is used to polish the welded weld, the collecting pipe 81 is used to collect the welding slag, and at the same time, the driving assembly 2 is started to drive the blowing pipe 4, the sound wave directional emitter 5, the welding gun 3, the polishing assembly 7 and the collecting assembly 8 to move in the length direction of the weld.

[0067] Through the process, the explosion-proof box 10 is produced, the welding quality of the explosion-proof box 10 and the overall strength of the explosion-proof box 10 are improved, and the production efficiency of the explosion-proof box 10 is greatly improved.

[0068] The embodiments of the specific embodiment are the preferred embodiments of the application, and are not limited to the protection scope of the application, wherein the same parts are indicated by the same reference numerals. Therefore: all equivalent changes made according to the structure, shape and principle of the application should be covered in the protection scope of the application.

Claims

1. A welding device for an explosion-proof enclosure, characterized by The utility model relates to a welding device for welding the weld of the explosion -proof box, which comprises: a workbench (1) having an upper end face on which an explosion -proof box (10) is placed; a welding torch (3) slidingly mounted on the workbench (1), the workbench (1) further being provided with a driving assembly (2) for driving the welding torch (3) to move along the length direction of the weld on the explosion -proof box (10), and the driving assembly (2) being further capable of driving the welding torch (3) to move in the direction of approaching or moving away from the explosion -proof box; a blowing pipe (4) mounted on the welding torch (3), one end of the blowing pipe (4) facing the weld, and the other end of the blowing pipe (4) being in communication with a gas source; a sound wave directional emitter (5) mounted on the welding torch (3), the output end of the sound wave directional emitter (5) facing the weld, and the sound wave directional emitter (5) being located on the side of the blowing pipe (4) away from the welding torch (3), the sound wave directional emitter (5) being located at the most front end in the moving direction of the welding torch (3), the sound wave directional emitter (5) being capable of emitting and receiving sound waves so as to detect whether there are tiny particles in the weld and make the tiny particles vibrate; the blowing pipe (4) being provided with an adjusting assembly (6) for adjusting the pipe diameter of the blowing pipe (4) so as to increase or decrease the flow intensity of the gas sprayed from the blowing pipe (4); the adjusting assembly (6) comprising adjusting plates (61), the adjusting plates (61) being provided in plurality, the plurality of adjusting plates (61) being uniformly and spacedly arranged around the axis of the blowing pipe (4), the plurality of adjusting plates (61) being all hingedly connected to one end of the blowing pipe (4) close to the weld, the plurality of adjusting plates (61) being capable of rotating along the axis of the blowing pipe (4) so as to be enclosed into a columnar pipe, and the pipe diameter being smaller closer to the weld, a winding drum (63) being rotatably arranged on the welding torch (3), the winding drum (63) being wound with a tightening line (64), one end of the tightening line (64) being connected to the outer peripheral wall of the winding drum (63), the other end of the tightening line (64) sequentially passing through the threading grooves (611) on each adjusting plate (61) and being connected to the groove wall of the threading groove (611) on the first adjusting plate (61), and a rotating motor (65) being arranged on the welding torch (3), the output shaft of the rotating motor (65) being coaxially and fixedly connected with the winding drum (63); when the sound wave directional emitter detects the existence of tiny particles, the sound wave directional emitter transmits a signal to the control center, the control center starts the adjusting assembly, the pipe diameter of the blowing pipe is reduced, and the flow speed of the gas sprayed from the blowing pipe is increased; the welding torch (3) being provided with a polishing assembly (7) located on the side of the welding torch (3) away from the blowing pipe (4); The polishing assembly (7) comprises a polishing disc (72) which is rotationally connected to the welding gun (3), the welding gun (3) is provided with a polishing motor (73), the output shaft of the polishing motor (73) is coaxially fixedly connected with the polishing disc (72), and the rotation direction of the polishing disc (72) can make the welding slag move away from the output end of the welding gun (3); The welding gun (3) is provided with a collecting assembly (8), and the collecting assembly (8) can collect the welding slag generated by the polishing disc (72); The collecting assembly (8) comprises a collecting pipe (81), one end of the collecting pipe (81) is communicated with the peripheral wall of the blowing pipe (4), the other end of the collecting pipe (81) is opposite to the polishing disc (72), the side wall of the collecting pipe (81) is communicated with a collecting box (82), and the communicating position of the collecting pipe (81) and the blowing pipe (4) is provided with a breathable film (83).

2. A welding apparatus for an explosion-proof enclosure according to claim 1, wherein The workbench (1) is provided with a positioning assembly (9), and the positioning assembly (9) is used for fixing the position of the explosion-proof box (10).

3. A welding apparatus for an explosion-proof enclosure according to claim 2, wherein The positioning assembly (9) is provided in multiple groups, the explosion-proof box (10) is surrounded by the multiple groups of positioning assemblies (9), the positioning assembly (9) comprises a positioning column (91), a positioning block (92) and a return spring (93), the positioning column (91) is installed on the workbench (1), one end of the positioning column (91) close to the explosion-proof box (10) is provided with a positioning groove (911), the positioning block (92) is slidingly inserted into the positioning groove (911), one end of the positioning block (92) away from the positioning groove (911) abuts against the explosion-proof box (10), and the return spring (93) is located in the positioning groove (911), one end of the return spring (93) is connected to the groove wall of the positioning groove (911), and the other end of the return spring (93) is connected to the positioning block (92).

4. A welding process of an explosion-proof box, based on the welding device of the explosion-proof box in claim 3, comprising the following steps: S1: placing the explosion-proof box (10) subjected to spot welding on the workbench (1), and then positioning the explosion-proof box (10) through the positioning assembly (9); S2: starting the gas source and the acoustic directional emitter (5), so that the blowing pipe (4) cleans the dust and small particles in the weld, the acoustic directional emitter (5) directionally emits ultrasonic waves to detect whether there are small particles difficult to clean in the weld, when it is detected that there are small particles, the ultrasonic waves emitted by the acoustic directional emitter (5) can make the small particles vibrate, so as to facilitate cleaning, and meanwhile, the adjusting assembly (6) is started, so that the pipe diameter of the blowing pipe (4) close to the weld is reduced, the flow intensity of the gas sprayed out is increased, the wind power is enhanced, and the cleaning capacity for the small particles in the weld is enhanced. S3: start the welding gun (3) and the polishing assembly (7), so that the welding gun (3) welds the weld of the explosion-proof box (10), the polishing assembly (7) polishes the welded weld, the collecting pipe (81) collects the welding slag, and simultaneously start the driving assembly (2) to drive the air blowing pipe (4), the acoustic wave directional emitter (5), the welding gun (3), the polishing assembly (7) and the collecting assembly (8) to move along the length direction of the weld.

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