Automatic electric arc welding equipment for processing bottle body of dry powder extinguisher

Abstract

The invention belongs to the technical field of welding machining, and particularly relates to automatic electric arc welding equipment for dry powder extinguisher bottle body machining, the automatic electric arc welding equipment comprises a workbench, a protection assembly and a scrap collecting assembly, and a supporting seat is fixedly arranged on the workbench. A V-shaped structure formed by combining the outer expansion of the circular hole of the protection pad and the lower expansion of the inner side of the side sleeve can gather gap leakage chips, and can push V-shaped bottom chips and welding groove chips to the chip gathering assembly for directional chip removal in cooperation with the first groove and the second groove, so that the chips are prevented from splashing on the arc surface of the bottle opening from the source, the defects such as hot burns and hard spots are eliminated, and a stress concentration source is prevented from being formed; the stress corrosion cracking risk during high-pressure filling and long-term service of the bottle body is effectively reduced, the structure safety of the bottle body is guaranteed, the inclined supporting base is matched with the arc-shaped surface of the protection pad, chippings rapidly slide down along an arc-shaped track under the gravity effect, and the chipping removal efficiency is further improved.

Description

Technical Field

[0001] This invention belongs to the field of welding processing technology, and in particular relates to an automatic arc welding equipment for processing dry powder fire extinguisher cylinders. Background Technology

[0002] In the field of fire-fighting equipment manufacturing, dry powder fire extinguishers have become one of the core equipment for fire safety in various places due to their advantages such as high fire extinguishing efficiency and wide applicability. As a high-pressure storage container for extinguishing agents, the structural integrity and sealing of the fire extinguisher cylinder directly determine the safety and reliability of the fire extinguisher. Among them, the connection quality between the cylinder and the valve seat is a key link. As the core component connecting the cylinder and the valve system, the valve seat needs to be firmly connected to the cylinder through welding process to ensure that there is no leakage of extinguishing agent.

[0003] The welding steps of the existing automatic arc welding equipment are as follows: First, place the upper bottle seat on the equipment support frame and fix its posture by positioning components. Then, place the valve seat coaxially on the opening of the upper bottle seat to ensure that the welding surfaces are in contact. Subsequently, the pressure mechanism applies axial pressure to the valve seat to prevent displacement. Finally, the program is started, and the welding torch moves along the annular joint while driving the welding torch to rotate, thus completing the arc cladding welding.

[0004] However, existing automatic arc welding equipment still has technical pain points that urgently need to be addressed, specifically in the following aspects: First, the bottle mouth at the top of the dry powder fire extinguisher is designed with an arc transition structure to meet functional requirements. During the initial assembly stage, the welding annular joint between the bottle mouth and the valve seat is only a few millimeters to a dozen millimeters away from this arc area, which is a near-sensitive welding scenario. During the arc welding process, high-temperature metal spatter easily falls onto the arc surface of the bottle mouth, forming surface defects such as local heat burns, surface pits, and micro-melting pits. This easily forms a stress concentration source in the arc area, which can easily induce stress corrosion crack propagation during subsequent high-pressure filling and long-term service, further aggravating the risk of cracking of the bottle mouth structure. Second, during the welding of the annular joint, the welding torch continuously operates around the bottle mouth and valve seat, continuously generating welding slag, metal chips, and other waste. Existing equipment is not equipped with a corresponding automatic collection device, causing these wastes to be directly scattered on the equipment workbench and bottle surface, requiring regular manual cleaning later, which increases production auxiliary time and labor costs. Summary of the Invention

[0005] In view of this, the present invention aims to solve two major technical problems existing in the existing automatic arc welding equipment: first, when welding the arc near the sensitive area of ​​the dry powder fire extinguisher bottle mouth, high temperature spatter easily causes surface defects and induces subsequent stress cracking; second, there is no automatic collection device for welding waste, which requires manual cleaning and increases production auxiliary time and labor costs.

[0006] To achieve the above objectives, the technical solution of the present invention is implemented as follows: This invention discloses an automatic arc welding device for processing dry powder fire extinguisher cylinders, comprising a workbench, a protective assembly, and a chip-gathering assembly. A support base is fixedly mounted on the workbench, and a cylinder body limiting seat and a cylinder mouth limiting seat are sequentially mounted on the top of the support base in a vertical direction, with the cylinder mouth limiting seat fixedly connected to the top of the cylinder body limiting seat. The cylinder body limiting seat is a semi-cylindrical shell, and both the cylinder body limiting seat and the cylinder mouth limiting seat have radially retractable clamping seats on their outer peripheral surfaces. A connecting frame is fixedly installed on one side of the support base. An electric push rod is mounted on the connecting frame. A rotating machine is detachably connected to the moving end of the electric push rod. A welding machine for arc welding of the bottle body is mounted at the output end of the rotating machine. A protective assembly, mounted on the rotary machine, is used to provide protection during the welding process; A chip collection assembly, which is mounted on the rotary machine, is used to collect welding chips during the welding process.

[0007] Furthermore, the protective component includes: The annular cover has an opening facing downwards, and its bottom is pressed into the top of the limiting bottle mouth seat, while its top is fixedly mounted on the rotating machine. A welding groove is provided on the lower side wall of the annular cover, and the welding groove is located on the side of the annular cover away from the connecting frame; A protective pad, which is a semi-cylindrical shell structure with a round hole, is laid on the top surface of the limiting bottle seat, and the round hole of the protective pad is adapted to the limiting bottle mouth seat for the limiting bottle mouth seat to pass through. The side sleeve is a ring-shaped sleeve with a notch. The side sleeve is fixedly installed on the lower outer wall of the annular cover. Its bottom abuts against the edge of the protective pad with a round hole. The inner wall of the annular cover, the top surface of the protective pad and the side sleeve enclose a welding area for welding operations. The injection port is located on the top wall of the welding tank, and the gas compressor is fixedly installed on the top of the annular cover, with the outlet of the gas compressor connected to the injection port.

[0008] Furthermore, the protective pad has magnets that attract each other on one side near the limiting bottle seat, for adsorption and fixation with the limiting bottle seat, and the side of the protective pad away from the limiting bottle seat is made of fiberglass felt.

[0009] Furthermore, the portion of the protective pad with the round hole has an outward expanding structure, and the inner side of the side sleeve has a downward oblique expanding structure, and the expansion direction of the inner side of the side sleeve and the expansion direction of the portion of the protective pad with the round hole form a V-shape.

[0010] Furthermore, a fixed frame is installed on the top of the workbench, and the support base is installed on the fixed frame at an inclined angle. The inclined angle is set so that the welding machine is located on a horizontal plane, so that welding debris is discharged from the welding tank by gravity.

[0011] Furthermore, the inner side of the welding groove is configured to gradually expand from the inside of the groove to the outside.

[0012] Furthermore, the rotating machine includes: A fixing plate is fixedly installed on the moving end of the electric actuator; The motor and the drive wheel are provided. The motor is fixedly mounted on the fixed plate. After the output end of the motor rotates through the fixed plate, the drive wheel is fixedly mounted on its end. The driven gear is rotatably connected to the bottom of the fixed plate and meshes with the driving gear. The driven gear is fixedly mounted on the top surface of the annular cover.

[0013] Furthermore, the chip-collecting assembly includes: The chip-collecting arc-shaped cover is in the shape of a square tube elbow, with its bottom slidably disposed on the top surface of the protective pad, and one end of its top fixedly connected to the annular cover. The welding machine is fixedly mounted on the chip-collecting arc-shaped cover. A transition groove is provided on the top of the chip-collecting arc-shaped cover near the welding groove, and the transition groove is connected to the welding groove. The transition groove is arranged in an upward inclined manner relative to one side of the annular cover. A transition cover, which is fixedly installed at the bottom of the chip-forming arc-shaped cover; A conical cover, which is fixedly installed at the bottom of the transition cover; An annular chip collector is detachably mounted on the support base. The annular chip collector has an annular structure and an internal cavity for accommodating welding chips.

[0014] Furthermore, the injection port includes a first injection groove and a second injection groove. The first injection groove and the second injection groove are both formed on the top wall of the welding groove and are respectively located on both sides of the welding machine. One end of the first injection groove is set towards the bottom wall of the circular hole of the protective pad, and one end of the second injection groove is set towards the transition groove. The other ends of the first injection groove and the second injection groove are both connected to the outlet of the compressed gas machine.

[0015] Furthermore, a chip discharge cover is fixedly installed at the end of the annular chip collection cover away from the connecting frame, and a chip discharge port is opened at the corresponding end of the annular chip collection cover and the chip discharge cover.

[0016] Compared with existing technologies, the automatic arc welding equipment for processing dry powder fire extinguisher cylinders described in this invention has the following advantages: 1. This invention uses an annular cover, a side sleeve, and a protective pad to enclose and seal the welding area, blocking most of the high-temperature spatter. The V-shaped structure formed by the outward expansion of the protective pad's circular hole and the downward expansion of the side sleeve's inner side can collect leaking debris from the gaps. In conjunction with the first groove pushing the debris at the bottom of the V-shape and the second groove pushing the welding groove debris to the debris collection component for directional chip removal, this invention eliminates spatter from the source onto the curved surface of the bottle mouth, eliminating defects such as heat burns and pitting, and avoiding the formation of stress concentration sources. This effectively reduces the risk of stress corrosion cracking during high-pressure filling and long-term service of the bottle, ensuring the safety of the bottle structure. Furthermore, the invention, through the cooperation of the inclined support base and the curved surface of the protective pad, allows debris to slide quickly along the curved trajectory under the action of gravity, further improving chip removal efficiency. Moreover, the curved surface has no dead corners, which can prevent debris from getting stuck, ensuring that there is no long-term debris retention on the surface of the welding groove and the protective pad, reducing the amount of subsequent cleaning work.

[0017] 2. This invention utilizes a chip-collecting arc-shaped cover that rotates with an annular cover. Its transition groove is connected to the welding tank, capturing the chips discharged from the welding tank in real time. After the transition cover receives the chips, they are directed to the annular chip-collecting cover via a conical cover structure. The support base is installed at an angle via a fixed frame, and the angle of inclination ensures that the welding machine is horizontal. Under the action of gravity, the chips slide along the arc-shaped surface of the protective pad towards the welding tank, while simultaneously assisting the chips in the annular chip-collecting cover to gather towards the chip discharge port. The annular chip-collecting cover has a cavity groove to temporarily store the chips, and a chip discharge port and chip discharge cover are located at the end away from the connecting frame. The chips enter the chip discharge cover through the chip discharge port and are directed to an external collection container, forming a closed loop for chip collection. The entire process is automatic chip collection, eliminating the need for manual cleaning of scattered waste. There is no waste scattered on the equipment table or workshop floor, reducing the risk of personnel being stepped on and scratched, and high-temperature chips causing fires. Attached Figure Description

[0018] Figure 1 This is a top view of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall structure of the present invention; Figure 3 This is a schematic diagram of the limiting bottle holder of the present invention; Figure 4 This is a schematic diagram of the rotating machine of the present invention; Figure 5 This is a longitudinal cross-sectional view of the limiting bottle seat of the present invention; Figure 6 This is a longitudinal cross-sectional view of the limiting bottle holder of the present invention from another angle; Figure 7 yes Figure 6 A magnified view of part A in the image; Figure 8 yes Figure 5 A magnified view of part B in the image; Figure 9 This is a cross-sectional view of the annular cover of the present invention; Figure 10 This is a schematic diagram of the chip-collecting component of the present invention.

[0019] The markings in the diagram are as follows: 1. Workbench; 11. Support base; 12. Bottle body limiting seat; 120. Clamping seat; 13. Bottle mouth limiting seat; 14. Connecting frame; 15. Electric actuator; 16. Rotating machine; 17. Welding machine; 2. Protective components; 21. Annular cover; 22. Welding groove; 23. Protective pad; 24. Side sleeve; 25. Spray nozzle; 251. First spray groove; 252. Second spray groove; 26. Compressed gas machine; 211. Fixing frame; 3. Chip collection assembly; 31. Chip collection arc cover; 311. Transition groove; 32. Transition cover; 33. Conical cover; 34. Annular chip collection cover; 35. Chip discharge cover; 36. Chip discharge port; 161. Fixing plate; 162. Motor; 163. Drive wheel; 164. Drive gear. Detailed Implementation

[0020] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0021] See Figures 1-5As shown, this invention provides an automatic arc welding device for processing dry powder fire extinguisher cylinders, including a workbench 1, a protective assembly 2, and a chip-collecting assembly 3. A support base 11 is fixedly installed on the workbench 1. A cylinder limiting seat 12 and a cylinder mouth limiting seat 13 are sequentially mounted vertically on the top of the support base 11, and the cylinder mouth limiting seat 13 is fixedly connected to the top of the cylinder limiting seat 12. The cylinder limiting seat 12 is a semi-cylindrical shell with a ring-shaped structure below it. The semi-annular cavity structure is used to limit the cylinder body of the dry powder fire extinguisher, providing a side-wrapping limitation to prevent the cylinder body from shifting horizontally during welding. The ring-shaped structure is used to limit the arc-shaped part of the cylinder mouth of the dry powder fire extinguisher. The cylinder mouth limiting seat 13 is used to limit the cylinder mouth part of the dry powder fire extinguisher, providing auxiliary positioning for the transition area between the cylinder mouth and the cylinder body, preventing this part from being affected by force or welding impact. To ensure welding accuracy, the positioning structure of the bottle body and bottle mouth is integrated into one unit to provide stable vertical support for the bottle body. At the same time, it provides a reasonable spatial layout basis for subsequent clamping and welding components. The outer peripheral surfaces of the bottle body limiting seat 12 and the bottle mouth limiting seat 13 are provided with radially retractable clamping seats 120. The clamping seats 120 are adapted to the bottle body limiting seat 12 and the bottle mouth limiting seat 13 respectively to clamp and fix the bottle body and the bottle mouth. A connecting frame 14 is fixedly provided on one side of the support seat 11. An electric push rod 15 is mounted on the connecting frame 14. The moving end of the electric push rod 15 is detachably connected to a rotating machine 16. The output end of the rotating machine 16 is equipped with a welding machine 17 for arc welding of the bottle body. The electric push rod 15 drives the rotating machine 16 and the welding machine 17 to move closer to or away from the bottle body in the vertical direction, realizing the alignment adjustment of the welding machine 17 without manual pushing, improving the convenience of operation. See Figures 2-7As shown, the protective component 2, mounted on the rotary machine 16, provides protection during the welding process. The protective component 2 includes an annular cover 21 with an opening facing downwards. Its bottom is pressed against the top of the bottle neck holder 13, and its top is fixedly mounted on the rotary machine 16. A welding groove 22 is located on the lower side wall of the annular cover 21, away from the connecting frame 14. A protective pad 23 is a semi-cylindrical shell structure with a circular hole, laid on the top surface of the bottle neck holder 12. The circular hole of the protective pad 23 is adapted to the bottle neck holder 13, allowing the bottle neck to be positioned within the groove. The nozzle 13 is inserted; the side sleeve 24 is a ring-shaped sleeve with a notch, and the side sleeve 24 is fixedly installed on the lower outer wall of the annular cover 21. Its bottom abuts against the edge of the protective pad 23 with a round hole, and the inner side wall of the annular cover 21, the top surface of the protective pad 23 and the side sleeve 24 enclose a welding area for welding operations; the injection port 25 and the compressed gas machine 26 are connected. The injection port 25 is opened on the top wall of the welding tank 22, and the compressed gas machine 26 is fixedly installed on the top of the annular cover 21. The outlet end of the compressed gas machine 26 is connected to the injection port 25 for supplying gas into the injection port 25.

[0022] It should be noted that, firstly, the dry powder fire extinguisher cylinder body is passed through the limiting cylinder mouth seat 13, so that the curved part of the cylinder body fits against the semi-cylindrical shell and the lower annular structure of the limiting cylinder body seat 12, and the cylinder mouth rests on the limiting cylinder mouth seat 13; then, the retractable clamping seat 120 on the outer circumference of the limiting cylinder body seat 12 and the limiting cylinder mouth seat 13 is activated, extending radially and pressing against the cylinder body and the cylinder mouth. The rotating machine 16 is driven by the electric push rod 15 to move towards the cylinder mouth until the bottom of the annular cover 21 is pressed against the top of the limiting cylinder mouth seat 13. At the same time, the side sleeve 24 on the lower outer wall of the annular cover 21 abuts against the protective pad 23 laid on the top surface of the limiting cylinder body seat 12. At this time, the round hole of the protective pad 23 has passed through the limiting cylinder mouth seat 13, and the abutment between the side sleeve 24 and the protective pad 23 can close the gap between them. Finally, the inner side wall of the annular cover 21, the top surface of the protective pad 23, and the protective pad 23 are pressed together. The side sleeves 24 together form a highly enclosed welding area. The part of the bottle mouth to be welded is exposed only through the welding groove 22 on the side of the annular cover 21 away from the connecting frame 14. The rotating machine 16 is started, which drives the annular cover 21 to rotate around the axis of the bottle mouth. When the welding machine 17 rotates with the annular cover 21, its welding torch can be inserted into the welding area through the welding groove 22 and perform arc welding along the circumferential trajectory of the bottle mouth. The high-temperature metal debris and sparks generated during the welding process are blocked by the annular cover 21 and the side sleeves 24 and cannot splash in all directions. They can only be discharged outward through the welding groove 22, which is the only opening. At the same time, the compressed gas machine 26 on the top of the annular cover 21 is started. The gas is sprayed out directionally through the spray nozzle 25 on the top wall of the welding groove 22, forming an airflow thrust that quickly pushes out the debris that diffuses near the welding groove 22 along the groove opening direction, avoiding the debris from lingering in the welding area.

[0023] See Figure 3 and Figure 5As shown, the protective pad 23 has magnets that attract each other on one side near the limiting bottle seat 12, which are used to attach and fix it to the limiting bottle seat 12. The side of the protective pad 23 away from the limiting bottle seat 12 is made of fiberglass felt. The protective pad 23 is laid on the top surface of the limiting bottle seat 12. On the one hand, it can buffer the squeezing force of the annular cover 21 and the side sleeve 24 to avoid the limiting bottle seat 12 from scratching the bottle surface. On the other hand, its fiberglass felt material (in combination with the previous design) can withstand the high temperature of welding to prevent debris from directly contacting the bottle body and causing burns. At the same time, it is attached to the limiting bottle seat 12 by the bottom magnet to ensure that the protective pad 23 does not shift during the welding process. After welding is completed, the rotary machine 16 stops rotating, and the electric push rod 15 drives the annular cover 21 away from the bottle mouth. At this time, the welding area is open, and the welded bottle can be taken out. The structural design of the protective pad 23 and the side sleeve 24 can reduce debris residue. Afterwards, only the debris discharged from the outside of the welding groove 22 needs to be cleaned, which reduces the cleaning difficulty.

[0024] The present invention forms a closed structure by combining the annular cover 21, the side sleeve 24 and the protective pad 23 of the protective component 2 to prevent splashes from contacting the non-welding area of ​​the bottle mouth. At the same time, the compressed gas 26 directs the debris out of the welding groove 22 through the spray port 25, preventing the debris from staying in the welding area and splashing onto the arc surface of the bottle mouth, thus eliminating defects such as heat burns, pitting and molten pits from the source and eliminating the hidden danger of stress concentration.

[0025] See Figure 8 As shown, the part of the protective pad 23 with the round hole has an outward expansion structure, and the inner side of the side sleeve 24 has a downward oblique expansion structure. The expansion direction of the inner side of the side sleeve 24 and the expansion direction of the part of the protective pad 23 with the round hole are V-shaped structures.

[0026] It should be noted that during the welding process, most of the high-temperature debris is blocked by the annular cover 21 and discharged from the welding groove 22. However, a small amount of fine debris still leaks through the tiny gaps in the welding area (such as the overlap between the side sleeve 24 and the protective pad 23). At this time, the V-shaped structure formed by the downwardly expanding inner surface of the side sleeve 24 and the outwardly expanding circular hole edge of the protective pad 23 will guide the leaking fine debris to the bottom of the V-shape (the gap between the bottom of the protective pad 23 and the top surface of the limiting bottle seat 12) through the guiding effect of the inclined surface, preventing the debris from spreading to other parts of the bottle or equipment. When the accumulated debris is guided by the rotating V-shaped structure to the welding groove, the debris will be discharged. When the fire extinguisher is near the weld groove 22, the compressed gas compressor 26 at the top of the annular cover 21 sprays a directional airflow through the nozzle 25. The airflow acts downward along the weld groove 22 on the accumulated debris, quickly pushing it out of the equipment and ensuring that no small debris remains in the welding area. Through the guiding and gathering function of the V-shaped slope, the leaked small debris is collected uniformly to the bottom of the protective pad 23. Combined with the rotation exposure and the discharge of the compressed gas compressor 26, the debris is completely cleaned up, fundamentally eliminating the residue of debris in hidden parts, avoiding subsequent cylinder sealing failure or corrosion damage, and further ensuring the long-term service safety of the fire extinguisher cylinder.

[0027] See Figure 1 , Figure 2 and Figure 7 As shown, a fixed frame 211 is installed on the top of the workbench 1, and the support base 11 is installed on the fixed frame 211 and is set at an inclined angle. The inclined angle is set so that the welding machine 17 is located on a horizontal plane, so that the welding debris is discharged from the welding tank 22 by gravity, and the debris is prevented from staying on the bottle mouth for a long time.

[0028] It should be noted that when the support base 11 is tilted, the welding machine 17 mounted on the rotary machine 16 can maintain a horizontal posture relative to the worktable 1. The protective pad 23 laid on the top surface of the limiting bottle holder 12 has a semi-cylindrical shell structure, and its arc-shaped surface is adapted to the tilting direction of the support base 11, providing a directional channel for subsequent debris to slide off. Specifically, after the debris enters the welding tank 22, it will slide off naturally along the arc-shaped surface of the semi-cylindrical shell of the protective pad 23 under the action of gravity. The smooth structure of the arc-shaped surface can reduce the sliding of debris. The resistance prevents debris from getting stuck in the grooves or gaps, while the tilt angle provides a continuous gravitational force, pushing the debris to move quickly along the arc-shaped trajectory towards the opening end of the welding groove 22, and finally being discharged from the welding groove 22 to the outside of the equipment. The present invention, through the cooperation of the tilt of the support base 11 and the arc-shaped surface of the protective pad 23, allows the debris to slide quickly along the arc-shaped trajectory under the action of gravity, further improving the chip removal efficiency. Moreover, the arc-shaped surface has no dead corners, which can avoid debris getting stuck and ensure that there is no long-term debris retention on the surface of the welding groove 22 and the protective pad 23, reducing the amount of subsequent cleaning work.

[0029] See Figure 7As shown, the inner side of the welding groove 22 is configured to gradually expand from the inside to the outside of the groove. This expansion structure allows the debris generated during the welding process to diffuse outward along the expansion direction of the inner side, thereby reducing the retention of debris in the welding area.

[0030] See Figure 2 and Figure 4 As shown, the rotary machine 16 includes a fixed plate 161 fixedly mounted on the moving end of the electric push rod 15; a motor 162 fixedly mounted on the fixed plate 161, the output end of the motor 162 rotates through the fixed plate 161 and the end is fixedly mounted with a drive wheel 163; a driven gear 164 is rotatably connected to the bottom of the fixed plate 161 and meshes with the drive wheel 163, and the driven gear 164 is fixedly mounted on the top surface of the annular cover 21.

[0031] When the electric actuator 15 pushes the fixed plate 161 to move until the annular cover 21 and the limiting bottle mouth seat 13 are pressed and fitted together, and the welding machine 17 is aligned with the part of the bottle mouth to be welded, the rotary machine 16 starts: the output shaft of the motor 162 rotates, driving the drive wheel 163 at the end to rotate synchronously. Since the drive wheel 163 meshes with the driven gear 164, the rotational force of the drive wheel 163 is transmitted to the driven gear 164, causing the driven gear 164 to rotate around its own axis. The driven gear 164 is fixedly connected to the annular cover 21, so the driven gear 164 will drive the annular cover 21 to rotate at a constant speed around the axis of the bottle mouth. When the welding machine 17 rotates synchronously with the annular cover 21, its welding torch can continuously act on the circumferential weld of the bottle mouth through the welding groove 22 of the annular cover 21, realizing 360° uninterrupted annular welding. At the same time, the stable rotation of the annular cover 21 during the rotation process allows the welding torch to move stably along the circumferential trajectory of the bottle mouth. The whole process does not require manual handling or adjustment of the position of the rotary machine 16, greatly improving the degree of automation.

[0032] See Figure 2 and Figure 10 As shown, the chip collection assembly 3 is mounted on the rotary machine 16 and is used to collect welding chips during the welding process. The chip collection assembly 3 includes a chip collection arc-shaped cover 31 in the shape of a square tube elbow, the bottom of which is slidably mounted on the top surface of the protective pad 23, and one end of which is fixedly connected to the annular cover 21. The welding machine 17 is fixedly mounted on the chip collection arc-shaped cover 31. A transition groove 311 is opened on the top side of the chip collection arc-shaped cover 31 near the welding groove 22, and the transition groove 311 is connected to the welding groove 22. The transition groove 311 is arranged in an upward inclined manner relative to one side of the annular cover 21. The transition cover 32 is fixedly mounted on the bottom of the chip collection arc-shaped cover 31. A conical cover 33 is fixedly mounted on the bottom of the transition cover 32. An annular chip collection cover 34 is detachably mounted on the support base 11, and the annular chip collection cover 34 is an annular structure with a cavity groove inside for accommodating welding chips.

[0033] It should be noted that the welding machine 17 is fixed on the chip-collecting arc cover 31. The chips generated during welding are blocked by the protective component 2 and can only be discharged through the welding groove 22. At this time, the transition groove 311 on the chip-collecting arc cover 31 (connected to the welding groove 22) can be aligned with the chip discharge direction in real time. The transition groove 311 is arranged with a downward inclination relative to one side of the annular cover 21, capturing all the chips discharged from the welding groove 22 and guiding them into the transition groove 311 to prevent chip diffusion. The conical cover 33 at the bottom of the transition cover 32 further compresses the chip flow space and uses the conical inner wall to guide the chips to the bottom, ensuring that the chips are transported along a fixed path without scattering or blocking in the middle. Since the annular chip-collecting cover 34 is an annular structure, it can be adapted to the 360° rotation trajectory of the conical cover 33. No matter which position the conical cover 33 rotates to, the chips can accurately fall into the cavity groove, realizing the seamless connection between dynamic transmission and static storage, completing the centralized collection of chips and improving the chip collection effect. This invention captures debris from the transition trough 311 and stores it in the annular debris collection hood 34. The entire process is free of exposed debris, avoiding the problems of debris splashing onto the workshop floor and equipment gaps caused by traditional open collection. It also reduces the risk of personnel being stepped on and scratched, and the risk of fire caused by high-temperature debris. At the same time, it reduces dust pollution in the workshop and improves the working environment. The inclined design of the transition trough 311 and the directional flow of the conical hood 33 can quickly guide the debris away from the welding area, while preventing debris from adhering to the bottle surface and causing scratches and corrosion. The annular debris collection hood 34 is detachable. When the debris accumulates to a certain amount, it can be directly removed for cleaning without disassembling other parts.

[0034] See Figure 6 and Figure 9 As shown, the injection port 25 includes a first injection groove 251 and a second injection groove 252. Both the first injection groove 251 and the second injection groove 252 are opened on the top wall of the welding groove 22 and are located on both sides of the welding machine 17. One end of the first injection groove 251 is set towards the bottom wall of the circular hole of the protective pad 23, and one end of the second injection groove 252 is set towards the transition groove 311, for injecting gas into the transition groove 311. The other ends of the first injection groove 251 and the second injection groove 252 are connected to the outlet end of the compressed gas machine 26, and the compressed gas machine 26 supplies gas to both of them.

[0035] It should be noted that the rear ends of the first spray groove 251 and the second spray groove 252 are both connected to the outlet end of the compressed gas machine 26. After the compressed gas machine 26 is started, it can simultaneously deliver gas to the first spray groove 251 and the second spray groove 252. The front end of the first spray groove 251 faces the bottom wall of the circular hole of the protective pad 23. After the gas is ejected through the groove, it flows along the inclined surface of the bottom wall of the circular hole of the protective pad 23 (in conjunction with the outward expansion structure of the circular hole of the protective pad 23 mentioned above) to the outside of the welding groove 22. For the debris near the bottom wall of the circular hole of the protective pad 23 (such as small debris gathered in the V-shaped structure, and debris that splashes onto the bottom wall of the circular hole during welding), the airflow pushes the debris along the bottom wall of the circular hole towards the opening of the welding groove 22, so as to prevent the debris from rebounding to the welding area after accumulating on the bottom wall of the circular hole. The front end of the second spray groove 252 faces the transition groove 311. After the gas is sprayed out through the groove opening, it directly acts on the inlet area of ​​the transition groove 311 and flows into the groove along the inclined direction of the transition groove 311 (the transition groove 311 is arranged inclined upward). For the debris in the welding groove 22 and at the inlet of the transition groove 311 (such as the main debris generated by the welding machine 17 and the debris that diffuses into the transition groove 311), the airflow directly pushes it into the transition groove 311, and the debris collection is realized in conjunction with the transmission structure of the chip collection component 3.

[0036] Since the first spray groove 251 and the second spray groove 252 are located on both sides of the welding machine 17, when the airflow is sprayed from the side, it only acts on the debris area on the side of the welding machine 17, while the front of the welding machine 17 (the welding point between the welding torch and the bottle mouth) is not directly impacted by the airflow. This achieves debris removal and avoids the airflow from interfering with the stability of the welding arc or cooling the weld pool.

[0037] See Figure 10 As shown, a chip discharge cover 35 is fixedly installed at the end of the annular chip collection cover 34 away from the connecting frame 14, and a chip discharge port 36 is opened at the corresponding end of the annular chip collection cover 34 and the chip discharge cover 35.

[0038] The debris in the cavity groove will gather towards the chip discharge port 36 under the combined action of gravity (in conjunction with the inclined setting of the support base 11) and the continuous pushing of subsequent debris. The debris gathered at the chip discharge port 36 enters the chip discharge hood 35 through the chip discharge port 36. The chip discharge hood 35 can be extended to a designated debris collection container (such as a waste bin) according to the workshop layout, and the debris is directionally discharged to the outside of the equipment, avoiding overflow after the debris in the cavity groove of the annular chip collection hood 34 is full. This realizes a closed loop of temporary storage, discharge and centralized treatment. Through the design of the chip discharge hood 35 and the chip discharge port 36, the debris in the cavity groove can be discharged to the external collection container in real time without frequent disassembly of the annular chip collection hood 34. This allows the chip collection component 3 to adapt to long-term continuous welding production (such as batch processing of fire extinguisher bottles), reduce equipment downtime caused by cleaning debris, and improve production continuity.

[0039] Working principle: When using the automatic arc welding equipment for processing dry powder fire extinguisher cylinders, the specific usage method is as follows: The dry powder fire extinguisher cylinder is passed through the limiting cylinder mouth seat 13, so that the curved part of the cylinder body fits the semi-cylindrical shell of the limiting cylinder body seat 12, the transition area between the cylinder body and the cylinder mouth fits the ring-shaped structure below the limiting cylinder body seat 12, and the cylinder mouth rests on the limiting cylinder mouth seat 13, so as to achieve the initial three-dimensional limiting of the cylinder body and the cylinder mouth. At the same time, the vertical assembly of the limiting cylinder body seat 12 and the limiting cylinder mouth seat 13 provides vertical stable support for the cylinder body. The radially retractable clamping seat 120 extends radially and abuts against the bottle body and bottle mouth respectively, adapting to the bottle body size to achieve firm fixation and prevent bottle displacement during welding. The electric actuator 15 on the connecting frame 14 drives the rotating machine 16 at its moving end to move towards the bottle mouth until the bottom of the annular cover 21 is pressed and adhered to the top of the limiting bottle mouth seat 13. At the same time, the notched annular sleeve 24 on the lower outer wall of the annular cover 21 abuts against the protective pad 23 laid on the top surface of the limiting bottle body seat 12, sealing the gap between the two. Finally, the inner wall of the annular cover 21, the top surface of the protective pad 23 and the sleeve 24 together form a highly sealed welding area, and the part of the bottle mouth to be welded is exposed only through the welding groove 22 on the side of the annular cover 21 away from the connecting frame 14. The high-temperature debris and sparks generated during welding are blocked by the annular cover 21 and the side sleeve 24, and can only be discharged through the welding tank 22. At the same time, the compressed gas machine 26 at the top of the annular cover 21 is activated, and the gas is sprayed out directionally through the nozzle 25 on the top wall of the welding tank 22, pushing out the debris that has diffused near the welding tank 22 along the inner wall of the expanding welding tank 22. If small debris leaks through the gaps in the welding area, the V-shaped structure formed by the perforated part of the protective pad 23 and the inner side of the side sleeve 24 will guide it to the bottom of the protective pad 23 to accumulate. After it is exposed to the vicinity of the welding tank 22 during the rotation, it will be pushed out by the compressed gas machine 26, thus preventing debris from lingering in the welding area. The welding machine 17, fixed on the chip-collecting arc cover 31, has its welding chips entering the transition groove 311 of the chip-collecting arc cover 31 via the welding groove 22. The transition groove 311 guides the chips into the transition cover 32 at the bottom of the chip-collecting arc cover 31. The transition cover 32 rotates with the annular cover 21 to transfer the chips to the conical cover 33 at the bottom, guiding the chips to concentrate at the bottom. The conical cover 33 continuously throws the chips into the detachable annular chip-collecting cover 34 on the support base 11. The annular chip-collecting cover 34 tilts with the support base 11. Under the push of gravity and subsequent chips, the chips in the cavity groove gather towards the chip discharge port 36 at the end away from the connecting frame 14, and enter the chip discharge cover 35 through the chip discharge port 36. The chip discharge cover 35 directs the chips to an external collection container. After welding is completed, the rotary machine 16 stops rotating, and the electric actuator 15 drives the annular cover 21 and the welding machine 17 away from the bottle mouth, opening the welding area; the welded bottle is then removed.

[0040] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. An automatic arc welding device for processing dry powder fire extinguisher cylinders, characterized in that... The system includes a workbench (1), a protective assembly (2), and a chip collection assembly (3). A support base (11) is fixedly installed on the workbench (1). A limit bottle body seat (12) and a limit bottle mouth seat (13) are sequentially mounted on the top of the support base (11) in the vertical direction. The limit bottle mouth seat (13) is fixedly connected to the top of the limit bottle body seat (12). The limit bottle body seat (12) is a semi-cylindrical shell. The outer circumferential surfaces of the limit bottle body seat (12) and the limit bottle mouth seat (13) are provided with a clamping seat (120) that can be extended and retracted in the radial direction. A connecting frame (14) is fixedly provided on one side of the support base (11). An electric push rod (15) is mounted on the connecting frame (14). A rotating machine (16) is detachably connected to the moving end of the electric push rod (15). A welding machine (17) for arc welding of the bottle body is mounted at the output end of the rotating machine (16). A protective component (2), which is mounted on the rotary machine (16), is used to provide protection during the welding process; A chip collection assembly (3), which is disposed on the rotary machine (16), is used to collect welding chips during the welding process.

2. The automatic arc welding equipment for processing dry powder fire extinguisher cylinders according to claim 1, characterized in that, The protective component (2) includes: The annular cover (21) has an opening facing downwards and its bottom is pressed into the top of the limiting bottle mouth seat (13). The top is fixedly mounted on the rotating machine (16). Welding groove (22), the welding groove (22) is opened on the lower side wall of the annular cover (21), and the welding groove (22) is located on the side of the annular cover (21) away from the connecting frame (14); The protective pad (23) is a semi-cylindrical shell structure with a round hole, which is laid on the top surface of the limiting bottle body seat (12), and the round hole of the protective pad (23) is adapted to the limiting bottle mouth seat (13) for the limiting bottle mouth seat (13) to pass through. The side sleeve (24) is a ring-shaped sleeve with a notch. The side sleeve (24) is fixedly installed on the lower outer wall of the annular cover (21). Its bottom abuts against the edge of the protective pad (23) with a round hole. The inner wall of the annular cover (21), the top surface of the protective pad (23), and the side sleeve (24) enclose a welding area for welding operations. The injection port (25) and the compressed gas generator (26) are provided. The injection port (25) is opened on the top wall of the welding groove (22). The compressed gas generator (26) is fixedly installed on the top of the annular cover (21), and the outlet end of the compressed gas generator (26) is connected to the injection port (25).

3. The automatic arc welding equipment for processing dry powder fire extinguisher cylinders according to claim 2, characterized in that, The protective pad (23) has magnets that attract each other on one side near the limiting bottle seat (12) for adsorption and fixation with the limiting bottle seat (12). The side of the protective pad (23) away from the limiting bottle seat (12) is made of glass fiber felt.

4. The automatic arc welding equipment for processing dry powder fire extinguisher cylinders according to claim 3, characterized in that, The protective pad (23) with the round hole has an outward expansion structure, and the inner side of the side sleeve (24) has a downward oblique expansion structure. The expansion direction of the inner side of the side sleeve (24) and the expansion direction of the protective pad (23) with the round hole are V-shaped structures.

5. An automatic arc welding device for processing dry powder fire extinguisher cylinders according to claim 2, characterized in that, A fixed frame (211) is installed on the top of the workbench (1), and the support base (11) is installed on the fixed frame (211) and set at an inclined angle. The inclined angle is set so that the welding machine (17) is located on a horizontal plane so that the welding debris is discharged from the welding tank (22) by gravity.

6. The automatic arc welding equipment for processing dry powder fire extinguisher cylinders according to claim 5, characterized in that, The inner side of the welding groove (22) is configured to gradually expand from the inside of the groove to the outside of the groove.

7. An automatic arc welding device for processing dry powder fire extinguisher cylinders according to claim 2, characterized in that, The rotating machine (16) includes: A fixing plate (161) is fixedly installed on the moving end of the electric actuator (15); The motor (162) and the drive wheel (163) are fixedly mounted on the fixed plate (161). After the output end of the motor (162) rotates through the fixed plate (161), the drive wheel (163) is fixedly mounted at the end. The driven gear (164) is rotatably connected to the bottom of the fixed plate (161) and meshes with the driving wheel (163). The driven gear (164) is fixedly mounted on the top surface of the annular cover (21).

8. The automatic arc welding equipment for processing dry powder fire extinguisher cylinders according to claim 2, characterized in that, The chip-collecting assembly (3) includes: The chip-collecting arc cover (31) is in the shape of a square tube bend, and its bottom is slidably disposed on the top surface of the protective pad (23). One end of its top is fixedly connected to the annular cover (21). The welding machine (17) is fixedly installed on the chip-collecting arc cover (31). Transition groove (311) is opened on the top of the chip arc cover (31) near the welding groove (22), and the transition groove (311) is connected to the welding groove (22). The transition groove (311) is arranged in an upward inclined manner relative to one side of the annular cover (21). A transition cover (32) is fixedly installed at the bottom of the chip arc cover (31); A conical cover (33) is fixedly installed at the bottom of the transition cover (32); An annular chip collector (34) is detachably mounted on the support base (11) and has an annular structure with a cavity groove inside for accommodating welding chips.

9. An automatic arc welding device for processing dry powder fire extinguisher cylinders according to claim 8, characterized in that, The injection port (25) includes a first injection groove (251) and a second injection groove (252). The first injection groove (251) and the second injection groove (252) are both opened on the top wall of the welding groove (22) and are located on both sides of the welding machine (17). One end of the first injection groove (251) is set towards the bottom wall of the circular hole of the protective pad (23), and one end of the second injection groove (252) is set towards the side of the transition groove (311). The other ends of the first injection groove (251) and the second injection groove (252) are both connected to the outlet of the compressed gas machine (26).

10. An automatic arc welding device for processing dry powder fire extinguisher cylinders according to claim 9, characterized in that, The annular chip collector (34) has a chip discharge cover (35) fixedly installed at one end away from the connecting frame (14), and the annular chip collector (34) has a chip discharge port (36) at the corresponding end of the chip discharge cover (35).

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