Electric arc welding device for soundproof room processing

Abstract

The application relates to the technical field of electric arc welding, and provides an electric arc welding device for soundproof room processing, which comprises an insulating sleeve, a protective nozzle, a conductive nozzle and an anti-blocking mechanism. The insulating sleeve is connected to a gun rod, the protective nozzle and the conductive nozzle are connected to the insulating sleeve, the conductive nozzle is located in the protective nozzle, the insulating sleeve is provided with a gas hole which is communicated with a wire guide hole of the insulating sleeve, the anti-blocking mechanism comprises an expansion piece, a lining pipe and an expansion force providing assembly, the expansion force providing assembly is installed on the lining pipe, the expansion force providing assembly moves linearly in the protective nozzle along with the lining pipe and compresses exhaust gas, the expansion piece is stretched into the wire guide hole of the insulating sleeve from the gas hole, and the whole cleaning process of the blocking object does not need to remove the protective nozzle, does not need to remove the conductive nozzle, does not need to intervene with an external third-party cleaning piece, and is convenient to operate.

Description

Technical Field

[0001] This invention relates to the field of arc welding technology, and in particular to an arc welding apparatus for processing soundproof rooms. Background Technology

[0002] A soundproof room (silent chamber) is a sound insulation testing device designed for product manufacturing workshops with testing requirements. It is a facility specifically designed to reduce noise interference and is widely used in recording studios and film post-production studios. Sound absorption treatment is applied inside the soundproof room to make it a small, silent chamber where small products such as precision instruments, motors, audio equipment, and transformers can be tested. The structural design of the soundproof room is its core component, aiming to minimize the path length and area of ​​sound wave propagation, and to reduce sound wave reflection and diffraction within the room to the greatest extent possible.

[0003] The soundproof room's main structure uses square steel as a frame, with environmentally friendly high-quality fiberglass panels on the outer sides, and a layer of welded sound insulation board sandwiched between them. Arc welding effectively blocks the high-frequency arc noise generated during welding (typically reaching 100-120 decibels), protecting workers and the surrounding environment. Gas-shielded arc welding, also known as gas-shielded welding or gas electric welding, is a type of arc welding that uses an electric arc as a heat source and gas as a protective medium. During the welding process, the shielding gas creates a protective layer around the arc, isolating the arc and molten pool from the air, preventing the influence of harmful gases, and ensuring stable arc combustion.

[0004] Traditional gas arc welding consists of an insulating sleeve, a protective nozzle, and a conductive nozzle. The insulating sleeve has vent holes; as the welding wire is output from the conductive nozzle, carbon dioxide gas is released through these vent holes to block airflow and ensure weld quality. However, during welding, spatter reflected into the protective nozzle can clog the vent holes, affecting the synchronous release of carbon dioxide gas. This causes the air-blocking mechanism to fail, impacting weld quality. When applied to welding soundproofing components, the large amount of air bubbles generated can negatively affect the sound insulation effect. Because the insulating sleeve is located inside the protective nozzle, and the vent holes are located behind the conductive nozzle, cleaning the clogged vent holes is difficult. Summary of the Invention

[0005] To address the above problems, the present invention provides the following technical solution:

[0006] An arc welding device for soundproof room processing includes an insulating sleeve, a protective nozzle, a conductive nozzle, and an anti-clogging mechanism. The insulating sleeve is connected to the welding gun barrel, and the protective nozzle and the conductive nozzle are connected to the insulating sleeve. The conductive nozzle is located inside the protective nozzle. The insulating sleeve has an air hole communicating with its wire guide hole. The anti-clogging mechanism includes an expansion member, a liner, and an expansion force providing component. The expansion force providing component is mounted on the liner and moves linearly within the protective nozzle along with the liner, compressing and venting exhaust gas. The expansion member extends into the wire guide hole of the insulating sleeve through the air hole. The expansion force providing component is connected to the expansion member. The expansion force providing component provides axial tension to the expansion member through linear movement and radial expansion force to the expansion member through compression and exhaust gas.

[0007] As a further preferred embodiment, the end of the liner extending into the protective nozzle is provided with a pushing part, the insulating sleeve extends into the liner and leaves an exhaust channel between it and the cavity wall of the liner, the air hole is connected to the exhaust channel, the insulating sleeve is provided with a stepped part facing the pushing part, the anti-clogging mechanism also includes a compression tube installed on the pushing part, one end of the compression tube extends horizontally toward the stepped part, the other end of the compression tube is connected to the expansion member, the expansion member is a curved tube communicating with the cavity of the compression tube, and the end of the expansion member extending into the air hole is closed.

[0008] As a further preferred embodiment, the insulating sleeve is provided with a guide rail groove, one end of which reaches the end of the insulating sleeve and is provided with a downwardly inclined lead-in portion, and the other end of the guide rail groove extends horizontally to the air hole and communicates with the air hole, and the width of the guide rail groove is greater than the width of the expansion member.

[0009] As a further preferred embodiment, the expansion member is a flat tube with an elliptical cross-section and several protrusions on its wall.

[0010] As a further preferred embodiment, the anti-clogging mechanism further includes a return spring filled between the pushing part and the stepped part, which, under the elastic support of the return spring, allows one end of the liner to extend beyond the protective nozzle.

[0011] As a further preferred embodiment, the outer circular surface of the liner is provided with a limiting part, the inner circular surface of the protective nozzle is provided with a movable part, the limiting part is located inside the movable part, and the inner circular surface of the protective nozzle is provided with a locking sleeve, with the limiting part disposed opposite to the inner side of the locking sleeve.

[0012] As a further preferred embodiment, the free end of the compression tube is provided with a supporting part, and a shaping spring is sleeved around the compression tube. The two ends of the shaping spring elastically abut against the supporting part and the pushing part, and the inner wall of the shaping spring is close to the tube wall of the compression tube.

[0013] As a further preferred embodiment, a movable gap is left between the outer circular surface of the liner and the inner circular surface of the protective nozzle. The movable gap is connected to the air at the outer end of the protective nozzle through the gap between the limiting part and the locking sleeve. A through hole is provided on the pushing part, and a sealing ring is embedded in the through hole. The sealing ring is slidably fitted on the outer circular surface of the end of the insulating sleeve that extends into the liner.

[0014] The advantages of this invention compared to the prior art are:

[0015] If porosity is found in the weld, apply pressure by pressing the outer end of the liner against the workpiece, forcing the outer end of the liner to retract into the protective nozzle. At this time, the inner end of the liner pushes the expansion force component to expel gas. The gas enters the expansion component, causing it to expand radially within the pores. Simultaneously, as the expansion force component compresses, it also drags the expansion component along the axial direction of the pores, clearing and dispersing the blockages in the pores. During this clearing process, the expansion component expands radially, effectively filling the pores and increasing the tightness between it and the blockages. As the expansion component moves along the axial direction of the pores, the blockages are effectively broken. When not clearing, the outer end of the liner extends beyond the protective nozzle, the expansion force component returns to its original length, and the expansion effect and tension on the expansion component are released. At this time, the expansion component deflates and collapses, and the pores return to unobstructed airflow. At the same time, the expansion component retracts into the pores without obstructing normal airflow. Once the blockages are cleared, carbon dioxide gas is emitted normally. The entire process of clearing blockages requires no removal of the nozzle, the conductive nozzle, or any external third-party cleaning components, making it easy to operate. Attached Figure Description

[0016] Figure 1 A schematic diagram of an arc welding device with a welding torch for processing soundproof rooms, provided as an embodiment of the present invention;

[0017] Figure 2 An arc welding device for processing soundproof rooms provided in this embodiment of the invention comprises... Figure 1 The diagram shows the components in the welding area after being cut open.

[0018] Figure 3 An arc welding device for processing soundproof rooms provided in this embodiment of the invention comprises... Figure 2 A diagram showing the disassembled protective nozzle;

[0019] Figure 4An arc welding device for processing soundproof rooms provided in this embodiment of the invention comprises... Figure 2 A schematic diagram taken from a rear viewpoint;

[0020] Figure 5 An arc welding device for processing soundproof rooms provided in this embodiment of the invention comprises... Figure 4 A schematic diagram showing the disassembled parts from another perspective;

[0021] Figure 6 An arc welding device for processing soundproof rooms provided in this embodiment of the invention comprises... Figure 5 A schematic diagram illustrating the dissection process;

[0022] Figure 7 An arc welding device for processing soundproof rooms provided in this embodiment of the invention comprises... Figure 3 An enlarged schematic diagram of part A is shown.

[0023] In the diagram: 10, insulating sleeve; 20, protective nozzle; 30, conductive nozzle; 40, anti-clogging mechanism; 410, expansion element; 420, liner; 430, expansion force providing assembly; 440, compression tube; 450, return spring;

[0024] 101. Vent; 102. Exhaust passage; 103. Stepped section; 104. Guide rail groove; 105. Connecting section;

[0025] 210. Activities Department; 220. Lock Case;

[0026] 4201. Propulsion part; 4202. Limiting part; 4203. Movement clearance; 4204. Sealing ring;

[0027] 4401, Supporting part; 4402, Fixed spring. Detailed Implementation

[0028] The above and other embodiments and advantages of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0029] In one implementation, such as Figures 1-7 As shown:

[0030] This embodiment provides an arc welding device for processing soundproof rooms, including an insulating sleeve 10, a protective nozzle 20, a conductive nozzle 30, and an anti-clogging mechanism 40. The insulating sleeve 10 is connected to the gun barrel, and the protective nozzle 20 and the conductive nozzle 30 are connected to the insulating sleeve 10. The conductive nozzle 30 is located inside the protective nozzle 20. The insulating sleeve 10 is provided with an air hole 101 communicating with its wire guide hole. The anti-clogging mechanism 40 includes an expansion member 410, a liner 420, and an expansion force providing component 430. The expansion force providing component 430 is installed on the liner 420. The expansion force providing component 430 moves linearly with the liner 420 inside the protective nozzle 20 and compresses and exhausts air. The expansion member 410 extends into the wire guide hole of the insulating sleeve 10 through the air hole 101. The expansion force providing component 430 is connected to the expansion member 410. While providing axial tension to the expansion member 410 through linear movement, the expansion force providing component 430 also provides radial expansion force to the expansion member 410 through compression and exhaust.

[0031] The welding wire enters the conductive nozzle 30 through the through hole of the insulating sleeve 10, and is delivered to the workpiece from the outer end of the conductive nozzle 30. Carbon dioxide gas enters the gas hole 101 through the through hole of the insulating sleeve 10, and is discharged into the liner 420 radially from the gas hole 101. It is then discharged onto the workpiece from the outer end of the liner 420 to block air and prevent air bubbles from forming in the weld, which would affect the noise reduction effect of the workpiece (existing technology of gas arc welding, which will not be elaborated).

[0032] This embodiment can clean the blockage in the pore 101 without removing the protective nozzle 20 and the conductive nozzle 30, making it easy to operate. It is demonstrated as follows: If pores are found in the weld, the outer end of the liner 420 is pressed against the workpiece to apply pressure, forcing the outer end of the liner 420 to retract into the protective nozzle 20. At this time, the inner end of the liner 420 pushes the expansion force providing component 430 to expel gas. The gas enters the expansion member 410, causing the expansion member 410 to expand radially within the pore 101. Simultaneously, when the expansion force providing component 430 compresses, it also drags the expansion member 410 along the axial direction of the pore 101, clearing and dispersing the blockage in the pore 101. During the clearing process, because the expansion member 410 expands radially, it is equivalent to the pore 101 being cleared by the expansion member 410. First, the filler 410 is used to increase the tightness between the filler and the blockage. As the expander 410 moves axially along the vent 101, the blockage is effectively broken down, rather than cleared. When this happens, the outer end of the liner 420 extends beyond the protective nozzle 20. The expansion force provides the component 430 with its length restored, and at the same time, the expansion effect and tension on the expander 410 are released. The expander 410 deflates and collapses, and the vent 101 returns to a state of unobstructed airflow. At this time, the expander 410 retracts into the vent 101 without obstructing the normal airflow. The blockage is cleared, and carbon dioxide gas is discharged normally. The entire process of clearing the blockage does not require the removal of the protective nozzle 20, the conductive nozzle 30, or any external third-party cleaning components. Cleaning only requires pressing the outer end of the liner 420 against the workpiece once, making it easy to operate.

[0033] like Figure 2 , Figure 3 as well as Figure 7 As shown, the end of the liner 420 that extends into the protective nozzle 20 is provided with a pushing part 4201, and the insulating sleeve 10 extends into the liner 420 and leaves an exhaust channel 102 between it and the cavity wall of the liner 420. The air hole 101 passes through the exhaust channel 102.

[0034] As described above, after the carbon dioxide gas is discharged through the vent 101, it is discharged outside the liner 420 through the exhaust channel 102 to block air. Compared with the prior art, even if the liner 420 is provided inside the protective nozzle 20, the normal emission of carbon dioxide gas will not be affected. Moreover, when the outer end of the liner 420 collides with the workpiece during the welding process, the expansion and contraction characteristics of the liner 420 will be used to buffer the impact and reduce the degree of damage.

[0035] like Figure 2 , Figure 3 as well as Figure 7As shown, the insulating sleeve 10 is provided with a stepped portion 103 facing the pushing part 4201. The expansion force providing assembly 430 includes a compression tube 440 installed on the pushing part 4201. The compression tube 440 is provided with a nozzle. One end of the compression tube 440 extends horizontally toward the stepped portion 103. The other end of the compression tube 440 is connected to an expansion member 410. The expansion member 410 is an elastic curved tube. One end of the expansion member 410 connected to the compression tube 440 communicates with the cavity of the compression tube 440. The end of the expansion member 410 that extends into the air hole 101 is closed.

[0036] Following the above, the structure of the expansion force providing component 430 is disclosed. When the liner 420 is retracted into the protective nozzle 20 due to the force on its outer end, the common inner end pushes the pushing part 4201, which in turn pushes the compression tube 440. At this time, the compression tube 440 compresses and exhausts the gas, allowing the gas to enter the expansion member 410, changing the expansion member 410 from flat (or collapsed) to radially expanded. At the same time, the expansion member 410 is dragged to move axially along the air hole 101. However, the expansion member 410 always uses its elastic bending within the air hole 101. It is only after the end of the expansion member 410 located within the air hole 101 moves a certain distance along the axial direction of the air hole 101 that the blockage is cleared. As the external force acting on the liner 420 disappears, the liner 420 will extend out again along the lumen of the protective nozzle 20. The compressive force of the push part 4201 at the inner end of the liner 420 on the compression tube 440 disappears, the compression tube 440 returns to its original shape (stretched and elongated), the gas in the expansion member 410 retreats into the compression tube 440 and is discharged outward from the nozzle on the compression tube 440, and the expansion member 410 returns to its deflated (or flat) shape.

[0037] The expansion member 410 is a flat tube with an elliptical cross-section and several protrusions on its wall. When the compression tube 440 compresses and exhausts gas (when the liner 420 moves inward), the expansion member 410 expands radially within the vent 101. In addition, it fills the vent 101 with the protrusions on its wall, thereby increasing the contact area and adhesion with any blockages. As the expansion member 410 moves axially along the vent 101, the protrusions thoroughly clear the blockages. When the compression tube 440 is not compressed (when the liner 420 moves outward and resets), the expansion member 410 deflates and flattens along the radial direction of the vent 101. The protrusions deviate towards the vent wall of the vent 101 along with the expansion member 410, maintaining a gap in the vent 101 for normal carbon dioxide gas emission.

[0038] like Figure 2 , Figure 3 as well as Figure 7As shown, the expansion force providing assembly 430 also includes a return spring 450 filled between the pushing part 4201 and the stepped part 103. Under the elastic support of the return spring 450, one end of the liner 420 extends beyond the protective nozzle 20. Considering that the liner 420 retracts into the protective nozzle 20, the expansion member 410 can automatically pop out and reset after clearing the blockage in the air hole 101 by driving the expansion force providing assembly 430. Therefore, a return spring 450 is provided between the pushing part 4201 of the liner 420 and the stepped part 103 of the insulating sleeve 10. That is, when the liner 420 retracts into the protective nozzle 20 due to the external force, the inner pushing part 4201 will squeeze the return spring 450, causing the return spring 450 to compress and shorten. When the external force of the liner 420 disappears, the return spring 450 releases its length, allowing the liner 420 to extend again.

[0039] like Figure 2 , Figure 3 As shown, the insulating sleeve 10 is provided with a guide rail groove 104. One end of the guide rail groove 104 reaches the end of the insulating sleeve 10 and is provided with a downwardly inclined lead-in portion 105. The other end of the guide rail groove 104 extends horizontally to the air hole 101 and communicates with the air hole 101. The width of the guide rail groove 104 is greater than the width of the expansion member 410. The outer circular surface of the liner tube 420 is provided with a limiting portion 4202. The inner circular surface of the protective nozzle 20 is provided with a movable portion 210. The limiting portion 4202 is located inside the movable portion 210. The inner circular surface of the protective nozzle 20 is provided with a locking sleeve 220. The limiting portion 4202 is disposed opposite to the inner side of the locking sleeve 220. The free end of the compression tube 440 is provided with a supporting part 4401, and a shaping spring 4402 is sleeved around the compression tube 440. The two ends of the shaping spring 4402 elastically abut against the supporting part 4401 and the pushing part 4201, and the inner wall of the shaping spring 4402 is close to the tube wall of the compression tube 440.

[0040] During assembly, first, the protective nozzle 20 is placed on the liner 420, and the limiting part 4202 is inserted into the movable part 210 in advance. Then, one end of the insulating sleeve 10 is connected to the gun barrel by thread. Next, the liner 420 is taken out, and the expansion member 410 at the inner end of the liner 420 is aligned with the guide part 105. Then, the liner 420 is pushed, and the liner 420 pushes the pushing part 4201. The pushing part 4201 drives the compression tube 440, and the compression tube 440 drives the expansion member 410 and the shaping spring 4402 to move inward until the abutment part 4401 on the free end of the compression tube 440 hits the stepped part 103. At the same time, the free end of the expansion member 410 enters the guide rail groove 104 along the guide part 105 and undergoes plastic deformation until the free end of the expansion member 410 reaches the air hole 101. Then, it is inserted into the air hole 101 by utilizing its elastic bending structural characteristics and returns to its original shape. Next, the fixed end of the protective nozzle 20 is threaded onto the insulating sleeve 10. Finally, the locking sleeve 220 is fixed (threaded or tightly fitted) to the inner surface of the protective nozzle 20 to restrict the limiting part 4202. Under the elastic support of the return spring 450 on the pushing part 4201, the liner 420, along with the limiting part 4202, moves towards the locking sleeve 220. The locking sleeve 220 restricts the liner 420, preventing it from falling off. At the same time, it also presses the outer end of the liner 420 against the locking sleeve. Figure 1 It extends beyond the protective mouth 20 as shown.

[0041] like Figure 2 , Figure 7 As shown, considering that the compression tube 440 is connected to the external gas when compressing and venting, a movable gap 4203 is left between the outer circular surface of the liner 420 and the inner circular surface of the protective nozzle 20. The movable gap 4203 is connected to the air at the outer end of the protective nozzle 20 through the gap between the limiting part 4202 and the locking sleeve 220. Considering the internal sealing effect and smooth guiding movement, a through hole is provided on the pushing part 4201, and a sealing ring 4204 is embedded in the through hole. The sealing ring 4204 is slidably fitted on the outer circular surface of the end of the insulating sleeve 10 that extends into the liner 420.

[0042] The above orientation references do not represent the specific orientations of each component in this implementation scheme. This implementation scheme is only for the convenience of describing the scheme and to make relative descriptions based on the orientations of the references. In reality, the specific orientations of each component are based on their actual installation and use, as well as the orientation descriptions that are customary to those skilled in the art. This is hereby stated.

[0043] The specific embodiments described above further illustrate the inventive purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above descriptions are merely specific embodiments of the present invention and are not intended to limit the scope of protection of the present invention. In particular, it should be noted that any modifications, equivalent substitutions, or improvements made by those skilled in the art within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An electric arc welding device for soundproof room processing, characterized by, The utility model provides an anti-blocking mechanism for wire drawing machine, which comprises an insulating sleeve (10), a protective nozzle (20), a conductive nozzle (30) and the anti-blocking mechanism (40), the insulating sleeve (10) is connected on the gun rod, the protective nozzle (20) and the conductive nozzle (30) are connected on the insulating sleeve (10), the conductive nozzle (30) is located in the protective nozzle (20), the insulating sleeve (10) is equipped with the air hole (101) that communicates with the wire hole thereof, the anti-blocking mechanism (40) comprises an expansion piece (410), a liner tube (420) and an expansion force providing assembly (430), the expansion force providing assembly (430) is installed on the liner tube (420), the expansion force providing assembly (430) follows the liner tube (420) and moves linearly in the protective nozzle (20) and compresses exhaust, the expansion piece (410) is stretched into the wire hole of the insulating sleeve (10) by the air hole (101), the expansion force providing assembly (430) is connected with the expansion piece (410), the expansion force providing assembly (430) provides axial tension to the expansion piece (410) by linear motion, and also provides radial expansion force to the expansion piece (410) by compressing exhaust.

2. The electric arc welding device for soundproof room processing according to claim 1, characterized by The one end of the liner tube (420) that stretches into the protective nozzle (20) is equipped with a pushing part (4201), the insulating sleeve (10) stretches into the liner tube (420) and leaves an exhaust passage (102) between the cavity wall of the liner tube (420), the air hole (101) penetrates the exhaust passage (102), the insulating sleeve (10) is equipped with a step part (103) that faces the pushing part (4201), the anti-blocking mechanism (40) further comprises a compression tube (440) that is installed on the pushing part (4201), one end of the compression tube (440) extends horizontally towards the step part (103), the other end of the compression tube (440) is connected with the expansion piece (410), the expansion piece (410) is a bent tube that communicates with the lumen of the compression tube (440), and the one end of the expansion piece (410) that stretches into the air hole (101) is closed.

3. The electric arc welding device for soundproof room processing according to claim 2, characterized by The insulating sleeve (10) is provided with a guide rail groove (104), one end of the guide rail groove (104) reaches the end of the insulating sleeve (10) and is provided with a downward inclined lead-in part (105), the other end of the guide rail groove (104) extends horizontally to the air hole (101) and communicates with the air hole (101), and the groove width of the guide rail groove (104) is greater than the width of the expansion piece (410).

4. The electric arc welding device for soundproof room processing according to claim 3, characterized by The expansion piece (410) is a flat tube with an elliptical horizontal loading surface, and a plurality of protrusions are arranged on the tube wall.

5. The electric arc welding apparatus for soundproof room processing according to claim 4, characterized by The anti-blocking mechanism (40) further comprises a reset spring (450) filled between the pushing part (4201) and the step part (103), and under the elastic support of the reset spring (450), the one end of the liner tube (420) extends out of the protective nozzle (20).

6. The electric arc welding apparatus for soundproof room processing according to claim 5, characterized by The outer surface of the liner tube (420) is provided with a limiting portion (4202), the inner surface of the protection nozzle (20) is provided with a movable portion (210), the limiting portion (4202) is located in the movable portion (210), the inner surface of the protection nozzle (20) is provided with a lock sleeve (220), and the limiting portion (4202) is oppositely arranged on the inner side of the lock sleeve (220).

7. The electric arc welding apparatus for soundproof room processing according to claim 6, characterized by The free end of the compression tube (440) is provided with an abutting portion (4401), the compression tube (440) is sleeved with a shaping spring (4402), the two ends of the shaping spring (4402) elastically abut between the abutting portion (4401) and the pushing portion (4201), and the inner wall of the shaping spring (4402) is close to the tube wall of the compression tube (440).

8. The electric arc welding apparatus for soundproof room processing according to claim 7, characterized by The outer surface of the liner tube (420) and the inner surface of the protection nozzle (20) are left with a movable gap (4203), the movable gap (4203) is communicated with air gas through the gap between the limiting portion (4202) and the lock sleeve (220) and the outer end of the protection nozzle (20), the pushing portion (4201) is provided with a through hole, the through hole is inlaid with a sealing ring (4204), and the sealing ring (4204) is slidingly fitted on the outer surface of the one end of the insulating sleeve (10) extending into the liner tube (420).

Images