Welding device for fire fighting equipment production

Abstract

The invention discloses a welding device for fire fighting equipment production, and mainly relates to the technical field of welding devices. Comprising a bottom frame, a first lining plate and a second lining plate, the first lining plate and the second lining plate are rotationally arranged on the bottom frame, movable frames are arranged on the first lining plate and the second lining plate in the radial direction, the ends of the movable frames are rotationally connected with first rolling wheels making contact with a barrel, and sliding plates are slidably connected to the movable frames; a welding gun is rotationally connected to the mounting seat, a second roller and a third roller which are in contact with the barrel are rotationally connected to the welding gun, and a first rotating disc and a second rotating disc which drive the movable frame to move are rotationally connected to the first lining plate and the second lining plate respectively. The fire extinguisher welding device has the beneficial effects that the problems that manual fire extinguisher welding is low in efficiency and unstable in quality are solved, the fire extinguisher welding efficiency and quality are improved, then the requirement for large-scale and batch production of fire extinguishers is met, and the manufacturing cost needed for batch production of the fire extinguishers is reduced.

Description

Technical Field

[0001] This invention relates to the technical field of welding equipment, specifically a welding device for the production of fire-fighting equipment. Background Technology

[0002] Portable fire extinguishers are one of the most common fire-fighting equipment. Existing portable fire extinguishers consist of three main parts: the cylinder, the end caps, and the internal filling material. Their production process involves shaping, welding, and filling. Welding requires joining the cylinder and the end caps at both ends to form a complete unit. Currently, the welding of the end caps and cylinder is mainly done manually. Manual welding relies on the welder's skill level, experience, and working condition (such as fatigue and concentration), which easily leads to defects such as incomplete welds, weak welds, slag inclusions, and porosity. This results in inconsistent quality in fire extinguishers produced through manual welding. Furthermore, manual welding is inefficient and cannot meet the needs of large-scale, mass production of fire extinguishers, significantly increasing the manufacturing costs required for mass production. Summary of the Invention

[0003] The purpose of this invention is to provide a welding device for the production of fire-fighting equipment, which solves the problems of low efficiency and unstable quality of manual welding of fire extinguishers, improves the efficiency and quality of welding fire extinguishers, and thus meets the needs of large-scale, batch production of fire extinguishers, while reducing the manufacturing cost required for batch production of fire extinguishers.

[0004] To achieve the above objectives, the invention employs the following technical solution: A welding apparatus for manufacturing fire-fighting equipment includes a welding mechanism for welding fire extinguishers and a fixing clamp for fixing fire extinguishers. The fire extinguisher includes a cylinder and end caps at both ends of the cylinder. The fixing clamp includes a base frame and a first support plate and a second support plate rotatably mounted on the base frame. Both the first and second support plates are radially provided with movable frames. The ends of the movable frames are rotatably connected to a first roller that contacts the cylinder. A sliding plate is slidably connected to the movable frame. The welding mechanism includes a mounting seat mounted on the sliding plate. A welding torch is rotatably connected to the mounting seat. A second roller and a third roller that contact the cylinder are rotatably connected to the welding torch. A first turntable and a second turntable that drive the movable frames to move are rotatably connected to the first and second support plates, respectively.

[0005] Furthermore, both the first and second support plates are provided with a plurality of radial grooves, the movable frame is provided with a slider that slides in contact with the grooves, the first and second turntables are respectively provided with inclined grooves, and the end of the movable frame is provided with a first guide rod that slides in contact with the inclined grooves.

[0006] Furthermore, the movable frame is provided with a first baffle and a second baffle, and a push plate that contacts the slide plate is provided between the first baffle and the second baffle. The movable frame is provided with a radial groove that slides in contact with a first guide rod. The first guide rod is provided with a radial block that is connected to the push plate. A first spring is provided between the slide plate and the first baffle.

[0007] Furthermore, a torsion spring is provided between the welding torch and the mounting base, the welding torch is provided with an arc-shaped groove, and the mounting base is provided with a second guide rod that is slidably connected to the arc-shaped groove.

[0008] Furthermore, the base frame is provided with an electromagnet that contacts one of the end caps.

[0009] Furthermore, a sleeve is rotatably connected to the base frame and slidably connected to the first turntable and the second turntable. The sleeve is provided with a plurality of first protrusions along the vertical direction. The first turntable and the second turntable are respectively provided with first grooves that contact the first protrusions. A first motor is provided on the base frame. A drive gear is provided on the movable end of the first motor. A driven gear that meshes with the drive gear is provided on the sleeve.

[0010] Furthermore, it also includes a tray that is slidably mounted on the base frame and in contact with the first support plate. Several top blocks that are in contact with the tray are slidably connected vertically on the base frame. One side of each top block is provided with an inclined surface. Several sliding rods are slidably connected radially on the base frame. The ends of the sliding rods are rotatably connected to a fourth roller that is in contact with the inclined surface. An adjusting wheel is rotatably connected to the base frame. Several connecting rods are rotatably connected to the adjusting wheel. The ends of the connecting rods are rotatably connected to the sliding rods.

[0011] Furthermore, the adjusting wheel is provided with an arc-shaped rack, and an arc-shaped block is provided on one side of the arc-shaped rack. The arc-shaped block is provided with a plurality of first limiting grooves. The base frame is provided with a second motor, and the movable end of the second motor is provided with a first drive wheel. The first drive wheel includes a cam that meshes with the arc-shaped rack and a limiting wheel that contacts the first limiting groove.

[0012] Furthermore, the first support plate is provided with a support block along the vertical direction, and the second support plate is provided with a second groove that is slidably connected to the support block. One of the support blocks is provided with a second protrusion, and the second protrusion is provided with a plurality of second limiting grooves. A pawl is provided between two adjacent second limiting grooves. The second support plate is provided with a third motor, and the movable end of the third motor is provided with a second drive wheel. Limiting blocks and pawls are respectively provided on both sides of the second drive wheel. The limiting blocks are in contact with the second limiting grooves to restrict the sliding of the second support plate relative to the first support plate. The pawls are in contact with the pawls to drive the second support plate to slide relative to the first support plate.

[0013] Furthermore, the first support plate is provided with a third limiting groove, the tray is slidably connected with a fifth roller that contacts the third limiting groove, the fifth roller is provided with a second spring between it and the base frame, and the tray is provided with a third groove that slidably contacts the top block.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. When welding fire extinguishers, the first motor, drive gear, driven gear, sleeve, first protrusion, first turntable, second turntable, and first groove work together to drive the first and second turntables to rotate on the base frame along with the sleeve. This allows for simultaneous control of the upper and lower welding torches, eliminating the need for separate programming and reducing programming difficulty. Furthermore, the absence of a separate power unit to drive the first and second turntables reduces the space required for power unit installation and manufacturing costs. Additionally, the sliding connection between the first protrusion and the first groove allows the first and second turntables to slide on the sleeve, enabling welding of fire extinguishers at different heights and reducing the cost of manufacturing welding devices for different types of fire extinguishers. 2. When the first turntable rotates on the base frame, the resistance generated by the fifth roller contacting the fifth limiting groove restricts the rotation of the first support plate on the base frame. At the same time, the sliding contact between the support block on the first support plate and the second groove on the second support plate restricts the rotation of the second support plate on the base frame. This, in turn, drives the first and second turntables to rotate on the base frame relative to the first and second support plates, causing the several inclined grooves on the first and second turntables to contact the corresponding first guide rods. Meanwhile, the sliding contact between the slider on the movable frame and the sliding groove on the first and second support plates guides the sliding of the movable frame on the first and second support plates, thereby driving the movable frame to slide radially on the first and second support plates until the first roller contacts the connection between the cylinder and the end cap in sequence, thus achieving the positioning and fixing of the fire extinguisher. This facilitates subsequent welding work on the fire extinguisher and improves the efficiency and effectiveness of welding the fire extinguisher. 3. Further rotation of the first and second turntables will cause the first guide rod to slide within the radial groove, allowing it to move further radially along the first and second support plates. This movement, via the radial block, will cause the push plate to move, bringing it into contact with the sliding plate. The push plate will then slide on the movable frame, and through the cooperation of the second and second rollers, the welding torch will rotate on the mounting base. This will move the welding head on the torch to the connection point between the cylinder and the end cap, ensuring that the flame ejected from the welding torch head fully contacts the connection point between the cylinder and the end cap, thereby improving the effectiveness of the welding fire extinguisher. Furthermore, there is no need for additional power adjustment of the welding torch angle, reducing the space required for power unit installation and manufacturing costs. Additionally, there is no need for programming to control the welding torch angle, further reducing programming difficulty. 4. Further drive the first and second turntables to rotate. The resistance generated by the first, second, and third rollers after they come into contact with the fire extinguisher will limit the rotation of the first turntable relative to the first support plate. The torque generated by the rotation of the first turntable is transmitted to the first support plate through the first guide rod. The force generated by the fifth roller after it comes into contact with the third limiting groove will drive the fifth roller to move downward and compress the second spring until the first support plate passes smoothly through the fifth roller. Therefore, it is not necessary to apply external force to drive the first turntable and the first support plate to rotate separately, thereby reducing the space required for the installation of the power unit and the cost of manufacturing. In addition, the driving force always acts on the first turntable to ensure that the first, second, and third rollers are always in contact with the fire extinguisher, thereby improving the stability of the overall structure during the welding process and improving the efficiency and quality of large-scale, batch welding of fire extinguishers of different specifications. 5. Enables automated welding of fire extinguishers, eliminating the need for manual welding, thereby ensuring the stability of fire extinguisher quality in large-scale, mass production, meeting the needs of large-scale, mass production of fire extinguishers, reducing the manufacturing costs required for mass production of fire extinguishers, and improving the efficiency and quality of welding fire extinguishers. In addition, by welding with multiple welding guns simultaneously, the efficiency of welding multiple welds on fire extinguishers can be further improved. Attached Figure Description

[0015] Appendix Figure 1 This is a schematic diagram of the structure of the cylindrical body of the present invention.

[0016] Appendix Figure 2 This is a schematic diagram of the welding torch of the present invention.

[0017] Appendix Figure 3 This is a schematic diagram of the structure of the second roller of the present invention.

[0018] Appendix Figure 4 This is a schematic diagram of the arc-shaped groove of the present invention.

[0019] Appendix Figure 5 This is a schematic diagram of the electromagnet of the present invention.

[0020] Appendix Figure 6 This is a schematic diagram of the arc-shaped rack of the present invention.

[0021] Appendix Figure 7 This is a schematic diagram of the limiting wheel of the present invention.

[0022] Appendix Figure 8 This is a schematic diagram of the drive gear of the present invention.

[0023] Appendix Figure 9 This is a schematic diagram of the structure of the fifth roller of the present invention.

[0024] Appendix Figure 10 This is a schematic diagram of the structure of the second drive wheel of the present invention.

[0025] The labels shown in the attached diagram: 1. Cylinder body; 2. End cap; 3. Base frame; 4. First support plate; 5. Second support plate; 6. Movable frame; 7. First roller; 8. Slide plate; 9. Mounting base; 10. Welding torch; 11. Second roller; 12. Third roller; 13. First turntable; 14. Second turntable; 15. Slide groove; 16. Slider; 17. Inclined groove; 18. First guide rod; 19. First baffle; 20. Second baffle; 21. Push plate; 22. Radial groove; 23. Radial block; 24. First spring; 25. Torsion spring; 26. Arc groove; 27. Second guide rod; 28. Electromagnet; 29. ​​Sleeve; 30. First protrusion; 31. First groove; 32. First motor; 33. Drive gear; 34. Driven gear; 35. Tray; 36. Top block; 37. Inclined surface; 38. Slide rod; 39. Fourth roller; 40. Adjusting wheel; 41. Connecting rod; 42. Arc-shaped rack; 43. Arc-shaped block; 44. First limiting groove; 45. Second motor; 46. First drive wheel; 47. Cam; 48. Limiting wheel; 49. Support block; 50. Second groove; 51. Second protrusion; 52. Second limiting groove; 53. Pulley; 54. Third motor; 55. Second drive wheel; 56. Limiting block; 57. Pulley; 58. Third limiting groove; 59. Fifth roller; 60. Second spring; 61. Third groove. Detailed Implementation

[0026] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the invention, and these equivalent forms also fall within the scope defined in this application.

[0027] This invention provides a welding apparatus for the production of fire-fighting equipment, such as... Figures 1-4As shown, the device includes a welding mechanism for welding fire extinguishers and a fixing clamp for securing fire extinguishers. The fire extinguisher includes a cylinder 1 and end caps 2 at both ends of the cylinder 1. When welding the fire extinguisher, the cylinder 1 and end caps 2 are pre-spot welded together to achieve initial positioning of the cylinder 1 and end caps 2, facilitating subsequent welding work. The fixing clamp includes a base frame 3 and a first support plate 4 and a second support plate 5 rotatably mounted on the base frame 3. Both the first support plate 4 and the second support plate 5 have radially arranged movable frames 6. The ends of the movable frames 6 are rotatably connected to first rollers 7 that contact the cylinder 1, allowing the spot-welded fire extinguisher to be placed... The fire extinguisher is placed on the base frame 3. Then, the first turntable 13 and the second turntable 14 are rotated on the first support plate 4 and the second support plate 5 respectively, driving the corresponding movable frame 6 to slide on the first support plate 4 and the second support plate 5. The first rollers 7 connected to several movable frames 6 are in contact with the connection between the cylinder 1 and the end cap 2 in sequence, driving the fire extinguisher to move on the base frame 3 until all the first rollers 7 are in contact with the connection between the cylinder 1 and the end cap 2. At this time, the fire extinguisher is located at the center of the base, and the movement of the fire extinguisher is restricted by several first rollers 7, thereby realizing the positioning and fixing of the fire extinguisher, which facilitates the subsequent welding work of the fire extinguisher and improves the efficiency and effect of welding the fire extinguisher. A sliding plate 8 is slidably connected to the movable frame 6. The welding mechanism includes a mounting base 9 mounted on the sliding plate 8. A welding torch 10 is rotatably connected to the mounting base 9. A second roller 11 and a third roller 12, which contact the cylinder 1, are rotatably connected to the welding torch 10. A first turntable 13 and a second turntable 14, which drive the movable frame 6, are rotatably connected to the first support plate 4 and the second support plate 5, respectively. When the sliding plate 8 slides on the movable frame 6, it causes the mounting base 9 and the welding torch 10 on the sliding plate 8 to move together until the second roller 11 contacts the connection between the cylinder 1 and the end cap 2. The resistance generated after contact causes the welding torch 10 to rotate on the mounting base 9. At the same time, the second roller 11 slides on the connection between the cylinder 1 and the end cap 2 until the third roller 12 contacts the connection between the cylinder 1 and the end cap 2. This ensures that the head of the welding torch 10, located between the second roller 11 and the third roller 12, corresponds to the connection between the cylinder 1 and the end cap 2, thereby achieving welding. The position of the welding torch 10 is determined, and then the first support plate 4 and the second support plate 5 are rotated on the base frame 3. Through the positioning of the first roller 7, the second roller 11 and the third roller 12, the welding torch 10 is driven to move around the connection between the fire extinguisher cylinder 1 and the end cap 2. The second roller 11 and the third roller 12 roll on the connection between the cylinder 1 and the end cap 2, controlling the distance between the welding torch 10 head and the connection between the cylinder 1 and the end cap 2, ensuring that the flame sprayed from the welding torch 10 head fully contacts the connection between the cylinder 1 and the end cap 2, thereby improving the welding effect of the fire extinguisher. At the same time, the welding of the fire extinguisher is automated, eliminating the need for manual welding, thereby ensuring the stability of the quality of fire extinguishers produced on a large scale and in batches, meeting the needs of large-scale and batch production of fire extinguishers, reducing the manufacturing cost required for batch production of fire extinguishers, and improving the efficiency and quality of welding fire extinguishers. In addition, by welding with multiple welding torches 10 at the same time, the efficiency of welding multiple welds on the fire extinguisher can be further improved.

[0028] Preferred, such as Figures 1-3As shown, both the first support plate 4 and the second support plate 5 have a plurality of radially arranged sliding grooves 15. The movable frame 6 has a slider 16 that slides in contact with the sliding grooves 15. The first turntable 13 and the second turntable 14 are respectively provided with inclined grooves 17. The end of the movable frame 6 is provided with a first guide rod 18 that slides in contact with the inclined grooves 17. When a fire extinguisher needs to be positioned and welded, the first turntable 13 and the second turntable 14 are rotated on the movable frame 6, so that the plurality of inclined grooves 17 provided on the first turntable 13 and the second turntable 14 respectively slide in contact with the sliding grooves 15. The first guide rod 18 is in contact with the movable frame 6, and at the same time, the slider 16 on the movable frame 6 slides in contact with the sliding groove 15 on the first support plate 4 and the second support plate 5. This guides the sliding of the movable frame 6 on the first support plate 4 and the second support plate 5, thereby driving the movable frame 6 to slide radially on the first support plate 4 and the second support plate 5 until the first roller 7 contacts the connection between the cylinder 1 and the end cap 2 in sequence. This achieves the positioning and fixing of the fire extinguisher, which facilitates the subsequent welding work of the fire extinguisher and improves the efficiency and effectiveness of welding the fire extinguisher.

[0029] Preferred, such as Figures 1-3 As shown, the movable frame 6 is provided with a first baffle 19 and a second baffle 20. A push plate 21 that contacts the slide plate 8 is provided between the first baffle 19 and the second baffle 20. The movable frame 6 is provided with a radial groove 22 that slides in contact with the first guide rod 18. A radial block 23 connected to the push plate 21 is provided on the first guide rod 18. A first spring 24 is provided between the slide plate 8 and the first baffle 19. When the first turntable 13 and the second turntable 14 are rotated on the movable frame 6, the first roller 7 contacts the connection between the cylinder 1 and the end cap 2 in sequence, thereby positioning and fixing the fire extinguisher and restricting the movable frame 6 from sliding on the first support plate 4 and the second support plate 5. Then, the first turntable 13 and the second turntable 14 are rotated further, which will drive the first guide rod 18 in the radial groove 22. The inner sliding mechanism allows the first support plate 4 and the second support plate 5 to move radially, and the radial block 23 drives the push plate 21 to move, so that the push plate 21 contacts the slide plate 8 and drives the slide plate 8 to slide on the movable frame 6. Through the cooperation of the second roller 11, the welding torch 10 is driven to rotate on the mounting base 9, so that the welding head on the welding torch 10 moves to the connection between the cylinder 1 and the end cap 2 and contacts it, ensuring that the flame sprayed from the welding torch 10 head fully contacts the connection between the cylinder 1 and the end cap 2, thereby improving the effect of welding fire extinguisher. In addition, there is no need to set up an additional power to adjust the angle of the welding torch 10, reducing the space required for the installation of the power unit and the cost of manufacturing. At the same time, there is no need to program the angle control of the welding torch 10, further reducing the difficulty of programming.

[0030] Preferred, such as Figure 4As shown, a torsion spring 25 is provided between the welding torch 10 and the mounting base 9. The welding torch 10 is provided with an arc-shaped groove 26. The mounting base 9 is provided with a second guide rod 27 that is slidably connected to the arc-shaped groove 26. The rebound force generated after the torsion spring 25 is compressed causes the welding torch 10 to retract and return to its initial position. The second guide rod 27 slides in the arc-shaped groove 26 to limit the swing angle of the welding torch 10, so as to avoid the welding torch 10 rotating too much and affecting the subsequent normal positioning. This meets the requirements of ensuring large-scale and batch production of fire extinguishers and improves the efficiency and quality of large-scale and batch welding of fire extinguishers.

[0031] Preferred, such as Figure 1 and Figure 5 As shown, the base frame 3 is equipped with an electromagnet 28 that contacts one of the end caps 2. After the first roller 7 contacts the connection between the cylinder 1 and the end cap 2 in sequence, the fire extinguisher is positioned and fixed on the base frame 3. By energizing the electromagnet 28, the electromagnet 28 generates a magnetic force to attract one of the end caps 2 of the fire extinguisher to the base frame 3, further fixing the fire extinguisher on the base frame 3. At the same time, the resistance generated by the electromagnet 28 attracting the fire extinguisher counteracts the friction generated after the first roller 7 contacts the fire extinguisher during the welding process, further improving the effect of fixing the fire extinguisher and preventing the first support plate 4 and the second support plate 5 from rotating on the base frame 3, which would cause the fire extinguisher to rotate together. This improves the efficiency and quality of large-scale, batch welding of fire extinguishers.

[0032] Preferred, such as Figure 1 , Figure 2 and Figure 8As shown, a sleeve 29 is rotatably connected to the base frame 3 and slidably connected to the first turntable 13 and the second turntable 14. The sleeve 29 has several first protrusions 30 vertically arranged on its upper edge. The first turntable 13 and the second turntable 14 each have first grooves 31 that contact the first protrusions 30. A first motor 32 is mounted on the base frame 3. A drive gear 33 is mounted on the movable end of the first motor 32. A driven gear 34 meshes with the drive gear 33 on the sleeve 29. The first motor 32 drives the drive gear 33 to rotate, and the driven gear 34 transmits torque, causing the sleeve 29 to rotate on the base frame 3. The sleeve 29 is connected to the first turntable 13 and the second turntable 14 via the several first protrusions 30 on its upper edge. The first groove 31 on the second turntable 14 comes into contact with the first turntable 13. The force generated after the contact drives the first turntable 13 and the second turntable 14 to rotate together with the sleeve 29 on the base frame 3, thereby controlling the welding torches 10 on both the upper and lower layers to move together. No separate programming control is required, which further reduces the programming difficulty. In addition, there is no need to set up a separate power unit to drive the first turntable 13 and the second turntable 14 to rotate, which reduces the space required for power unit installation and the manufacturing cost. Furthermore, the sliding connection between the first protrusion 30 and the first groove 31 allows the first turntable 13 and the second turntable 14 to slide on the sleeve 29, thereby realizing the welding of fire extinguishers of different heights and reducing the cost required to manufacture welding devices for different types of fire extinguishers.

[0033] Preferred, such as Figure 5 As shown, it also includes a tray 35 slidably mounted on the base frame 3 and in contact with the first support plate 4. Several top blocks 36 are slidably connected vertically to the base frame 3, each contacting the tray 35. One side of each top block 36 has an inclined surface 37. Several sliding rods 38 are slidably connected radially to the base frame 3. The ends of the sliding rods 38 are rotatably connected to fourth rollers 39 that contact the inclined surfaces 37. An adjusting wheel 40 is rotatably connected to the base frame 3. Several connecting rods 41 are rotatably connected to the adjusting wheel 40. The ends of the connecting rods 41 are rotatably connected to the sliding rods 38. By rotating the adjusting wheel 40 on the base frame 3, one end of each connecting rod 41 is driven... The end moves together with the adjusting wheel 40, and because the end of the connecting rod 41 is rotatably connected to the sliding rod 38, the resulting component force drives several sliding rods 38 to slide simultaneously on the base frame 3, so that the fourth roller 39 at the end of the sliding rod 38 further contacts the inclined surface 37 on one side of the top block 36. The resulting thrust drives the first support plate 4 to slide on the base frame 3 through the tray 35, thereby changing the distance between the welding torch 10 located on the first support plate 4 and the base frame 3, adapting to the height of different bottom end caps 2, thereby meeting the needs of large-scale, batch welding of fire extinguishers of different specifications, and improving the efficiency and quality of large-scale, batch welding of fire extinguishers of different specifications.

[0034] Preferred, such as Figure 5 , Figure 6and Figure 7 As shown, the adjusting wheel 40 is provided with an arc-shaped rack 42, and an arc-shaped block 43 is provided on one side of the arc-shaped rack 42. The arc-shaped block 43 is provided with a plurality of first limiting grooves 44. The base frame 3 is provided with a second motor 45, and the movable end of the second motor 45 is provided with a first drive wheel 46. The first drive wheel 46 includes a cam 47 that meshes with the arc-shaped rack 42 and a limiting wheel 48 that contacts the first limiting groove 44. The second motor 45 drives the first drive wheel 46 to rotate, so that the limiting wheel 48 provided on the first drive wheel 46 slides out of the first limiting groove 44, releasing the restriction on the rotation of the adjusting wheel 40 on the base frame 3. Then, the cam 47 meshes with the corresponding arc-shaped rack 42, generating a torque. The torque drives the adjusting wheel 40 to rotate on the base frame 3, causing multiple top blocks 36 to slide vertically on the base frame 3, thereby adjusting the position of the first support plate 4 to adapt to different bottom end caps 2 heights, thus meeting the needs of large-scale, batch welding of fire extinguishers of different specifications, improving the efficiency and quality of large-scale, batch welding of fire extinguishers of different specifications. In addition, after each adjustment of the position of one side of the first support plate 4, the limiting wheel 48 will re-enter the first limiting groove 44, and the resistance generated after the two come into contact will limit the rotation of the adjusting wheel 40 on the base frame 3, thereby achieving mechanical locking of the first support plate 4 on the base frame 3, without the need to provide additional power to the first support plate 4 to apply support force, thereby improving the service life of the power unit.

[0035] Preferred, such as Figure 1 and Figure 10As shown, the first support plate 4 has a vertically arranged support block 49, and the second support plate 5 has a second groove 50 that is slidably connected to the support block 49. One of the support blocks 49 has a second protrusion 51, and the second protrusion 51 has several second limiting grooves 52. A groove 53 is provided between two adjacent second limiting grooves 52. The second support plate 5 has a third motor 54, and the movable end of the third motor 54 has a second drive wheel 55. Limiting blocks 56 and locating blocks 57 are respectively provided on both sides of the second drive wheel 55. The limiting blocks 56 contact the second limiting grooves 52 to restrict the sliding of the second support plate 5 relative to the first support plate 4. The locating blocks 57 contact the grooves 53 to drive the second support plate 5 to slide relative to the first support plate 4. The third motor 54 drives the second drive wheel 55 to rotate, so that the limiting blocks 56 on one side of the second drive wheel 55 are moved from the second limiting grooves 52 to the second limiting grooves 52. The second support plate 5 slides out of the slot 52, releasing the restriction on the sliding of the second support plate 5 on the first support plate 4. Then, the second drive wheel 55 contacts the slot 53 through the lever 57 on the other side. The resulting force is transmitted through the second drive wheel 55 and the third motor 54, driving the second support plate 5 to move relative to the first support plate 4, thereby adapting to different cylinder heights. This meets the needs of large-scale, batch welding of fire extinguishers of different specifications, improving the efficiency and quality of large-scale, batch welding of fire extinguishers of different specifications. At the same time, after each time the second support plate 5 slides on the first support plate 4, it re-contacts the second limit slot 52 through the limit block 56. The resistance generated after the two contact restricts the sliding of the second support plate 5 relative to the first support plate 4, thereby achieving mechanical locking of the first support plate 4 on the base frame 3. No additional power is needed to apply support force to the second support plate 5, thereby improving the service life of the power unit.

[0036] Preferred, such as Figure 9As shown, the first support plate 4 is provided with a third limiting groove 58, and the tray 35 is slidably connected with a fifth roller 59 that contacts the third limiting groove 58. A second spring 60 is provided between the fifth roller 59 and the base frame 3. The tray 35 is provided with a third groove 61 that slides in contact with the top block 36. When the first turntable 13 is driven to rotate on the base frame 3, the resistance generated after the fifth roller 59 contacts the third limiting groove 58 restricts the rotation of the first support plate 4 on the base frame 3, thereby driving the first turntable 13 to rotate on the base frame 3 relative to the first support plate 4. Through the cooperation of the first roller 7, the second roller 11 and the third roller 12, the positioning and fixing of the fire extinguisher and the adjustment of the position of the welding torch 10 are realized. Then, through the resistance generated after the first roller 7, the second roller 11 and the third roller 12 contact the fire extinguisher, and the resistance generated after the top block 36 contacts the tray 35, the first support plate 4 is driven to rotate on the base frame 3. The resistance generated by the contact of the third groove 61 will limit the rotation of the first turntable 13 relative to the first support plate 4. The torque generated by the rotation of the first turntable 13 will be transmitted to the first support plate 4 through the first guide rod 18. The force generated by the contact of the fifth roller 59 with the third limiting groove 58 will drive the fifth roller 59 to move downward, compressing the second spring 60 until the first support plate 4 passes smoothly through the fifth roller 59. Therefore, it is not necessary to apply external force to drive the rotation of the first turntable 13 and the first support plate 4 separately, thereby reducing the space required for the installation of the power unit and the cost of manufacturing. In addition, the driving force always acts on the first turntable 13, ensuring that the first roller 7, the second roller 11 and the third roller 12 are always in contact with the fire extinguisher, thereby improving the stability of the overall structure during the welding process and improving the efficiency and quality of large-scale, batch welding of fire extinguishers of different specifications.

[0037] Example 1 This invention provides a welding apparatus for the production of fire-fighting equipment, such as... Figures 1-4 As shown, when welding fire extinguishers is required, the cylinder 1 and the end cap 2 of the fire extinguisher are spot welded together in advance to achieve the initial positioning of the cylinder 1 and the end cap 2, which facilitates the subsequent welding work of the fire extinguisher. The spot-welded fire extinguisher is placed on the base frame 3. Then, the first turntable 13 and the second turntable 14 are rotated on the first support plate 4 and the second support plate 5 respectively, driving the corresponding movable frame 6 to slide on the first support plate 4 and the second support plate 5. The first rollers 7 connected to several movable frames 6 are in sequence contact with the connection between the cylinder 1 and the end cap 2, driving the fire extinguisher to move on the base frame 3 until all the first rollers 7 are in contact with the connection between the cylinder 1 and the end cap 2. At this time, the fire extinguisher is located at the center of the base, and the movement of the fire extinguisher is restricted by several first rollers 7, thereby realizing the positioning and fixing of the fire extinguisher, which facilitates the subsequent welding work of the fire extinguisher and improves the efficiency and effect of welding the fire extinguisher. Next, slide the slide plate 8 on the movable frame 6, causing the mounting base 9 and welding torch 10 on the slide plate 8 to move together until the second roller 11 contacts the connection between the cylinder 1 and the end cap 2. The resistance generated after contact causes the welding torch 10 to rotate on the mounting base 9. At the same time, the second roller 11 slides on the connection between the cylinder 1 and the end cap 2 until the third roller 12 contacts the connection between the cylinder 1 and the end cap 2. This aligns the welding torch 10 head, positioned between the second roller 11 and the third roller 12, with the connection between the cylinder 1 and the end cap 2, thus determining the position of the welding torch 10. Finally, rotate the first support plate 4 and the second support plate 5 on the base frame 3. Through the positioning of the first roller 7, the second roller 11, and the third roller 12, the welding torch 10 rotates around the end cap 2. The connection between the fire extinguisher cylinder 1 and the end cap 2 moves and rolls on the connection between the cylinder 1 and the end cap 2 via the second roller 11 and the third roller 12, controlling the distance between the welding torch 10 head and the connection between the cylinder 1 and the end cap 2. This ensures that the flame sprayed from the welding torch 10 head fully contacts the connection between the cylinder 1 and the end cap 2, thereby improving the welding effect of the fire extinguisher. At the same time, it realizes the automated welding of the fire extinguisher, eliminating the need for manual welding, thereby ensuring the stability of the quality of fire extinguishers produced on a large scale and in batches, meeting the needs of large-scale and batch production of fire extinguishers, reducing the manufacturing cost required for batch production of fire extinguishers, and improving the efficiency and quality of welding fire extinguishers. In addition, by welding with multiple welding torches 10 simultaneously, the efficiency of welding multiple welds on the fire extinguisher can be further improved.

[0038] Example 2 Based on Example 1, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 8 and Figure 9 As shown, when a fire extinguisher needs to be positioned and welded, the first motor 32 drives the drive gear 33 to rotate, and the driven gear 34 transmits torque, causing the sleeve 29 to rotate on the base frame 3. Several first protrusions 30 on the sleeve 29 contact the first grooves 31 on the first turntable 13 and the second turntable 14. The force generated after contact causes the first turntable 13 and the second turntable 14 to rotate together with the sleeve 29 on the base frame 3, thereby simultaneously controlling the upper and lower welding torches 10 to move together. No separate programming control is required, further reducing the programming difficulty. In addition, there is no need to set up a separate power device to drive the first turntable 13 and the second turntable 14 to rotate, reducing the space required for power device installation and the manufacturing cost. Furthermore, the sliding connection between the first protrusions 30 and the first grooves 31 allows the first turntable 13 and the second turntable 14 to slide on the sleeve 29, thereby realizing the welding of fire extinguishers of different heights and reducing the cost required to manufacture welding devices for different types of fire extinguishers. When the first turntable 13 rotates on the base frame 3, the resistance generated by the fifth roller 59 contacting the third limiting groove 58, and the resistance generated by the top block 36 contacting the third groove 61 on the tray 35, restrict the rotation of the first support plate 4 on the base frame 3. Simultaneously, the sliding contact between the support block 49 on the first support plate 4 and the second groove 50 on the second support plate 5 restricts the rotation of the second support plate 5 on the base frame 3. This, in turn, drives the first turntable 13 and the second turntable 14 to rotate on the base frame 3 relative to the first support plate 4 and the second support plate 5, causing the first turntable 13 and the second turntable 14 to rotate. The several inclined grooves 17 on the disc 14 contact the corresponding first guide rods 18. At the same time, the slider 16 on the movable frame 6 slides in contact with the sliding grooves 15 on the first support plate 4 and the second support plate 5, which guides the sliding of the movable frame 6 on the first support plate 4 and the second support plate 5. This causes the movable frame 6 to slide radially on the first support plate 4 and the second support plate 5 until the first roller 7 contacts the connection between the cylinder 1 and the end cap 2 in sequence, thereby realizing the positioning and fixing of the fire extinguisher. This facilitates the subsequent welding of the fire extinguisher and improves the efficiency and effectiveness of welding the fire extinguisher. Next, the first turntable 13 and the second turntable 14 are rotated further, which will drive the first guide rod 18 to slide in the radial groove 22, so that it will move further radially in the first support plate 4 and the second support plate 5, and drive the push plate 21 to move through the radial block 23, so that the push plate 21 contacts the slide plate 8, and drives the slide plate 8 to slide on the movable frame 6. Through the cooperation of the second roller 11, the welding torch 10 is driven to rotate on the mounting base 9, so that the welding head on the welding torch 10 moves to the connection between the cylinder 1 and the end cap 2 and contacts it, ensuring that the flame sprayed from the welding torch 10 head fully contacts the connection between the cylinder 1 and the end cap 2, thereby improving the effect of welding the fire extinguisher. In addition, there is no need to set up an additional power to adjust the angle of the welding torch 10, reducing the space required for the installation of the power unit and the cost of manufacturing. At the same time, there is no need to program the angle control of the welding torch 10, further reducing the difficulty of programming. Subsequently, the first turntable 13 and the second turntable 14 are further driven to rotate. The resistance generated by the first roller 7, the second roller 11 and the third roller 12 after contacting the fire extinguisher restricts the rotation of the first turntable 13 relative to the first support plate 4. The torque generated by the rotation of the first turntable 13 is transmitted to the first support plate 4 through the first guide rod 18. The force generated by the fifth roller 59 after contacting the third limiting groove 58 drives the fifth roller 59 to move downward, compressing the second spring 60 until the first support plate 4 passes smoothly through the fifth roller 59. Thus, it is not necessary to apply external force to drive the first turntable 13 and the first support plate 4 to rotate separately, thereby reducing the space required for the installation of the power unit and the cost required for manufacturing. In addition, the driving force always acts on the first turntable 13, ensuring that the first roller 7, the second roller 11 and the third roller 12 are always in contact with the fire extinguisher, thereby improving the stability of the overall structure during the welding process and improving the efficiency and quality of large-scale, batch welding of fire extinguishers of different specifications. After welding is completed, the first turntable 13 and the second turntable 14 are rotated in the opposite direction, causing the movable frame 6 to return to its initial position. The rebound force generated by the compression of the torsion spring 25 causes the welding torch 10 to return to its initial position after retraction. At the same time, the second guide rod 27 slides in the arc groove 26 to limit the swing angle of the welding torch 10, so as to avoid the welding torch 10 rotating too much and affecting the subsequent normal positioning. This meets the requirements of ensuring large-scale and batch production of fire extinguishers and improves the efficiency and quality of large-scale and batch welding of fire extinguishers.

[0039] Example 3 Based on Example 2, such as Figure 1 and Figure 5 As shown, after the first roller 7 contacts the connection between the cylinder 1 and the end cap 2 in sequence to achieve the positioning and fixation of the fire extinguisher on the base frame 3, the electromagnet 28 is energized to generate magnetic force to attract one of the end caps 2 of the fire extinguisher to the base frame 3, further fixing the fire extinguisher on the base frame 3. At the same time, the resistance generated by the electromagnet 28 attracting the fire extinguisher counteracts the friction generated after the first roller 7 contacts the fire extinguisher during the welding process, further improving the effect of fixing the fire extinguisher, preventing the first support plate 4 and the second support plate 5 from rotating on the base frame 3 and causing the fire extinguisher to rotate together, thereby improving the efficiency and quality of large-scale, batch welding of fire extinguishers.

[0040] Example 4 Based on Example 2, such as Figure 5 , Figure 6 , Figure 7 , Figure 8 and Figure 10As shown, when the fire extinguisher model changes, the second motor 45 drives the first drive wheel 46 to rotate, causing the limiting wheel 48 on the first drive wheel 46 to slide out of the first limiting groove 44, releasing the restriction on the rotation of the adjusting wheel 40 on the base frame 3. Then, the cam 47 meshes with the corresponding arc-shaped rack 42, and the resulting torque drives the adjusting wheel 40 to rotate on the base frame 3, causing one end of several connecting rods 41 to move along with the adjusting wheel 40. Since the ends of the connecting rods 41 are rotatably connected to the slide rod 38, the resulting... The force drives several sliding rods 38 to slide simultaneously on the base frame 3, so that the fourth roller 39 at the end of the sliding rod 38 further contacts the inclined surface 37 on one side of the top block 36. The resulting thrust drives the first support plate 4 to slide on the base frame 3 through the tray 35, thereby changing the distance between the welding torch 10 located on the first support plate 4 and the base frame 3, adapting to the height of different bottom end caps 2, and thus meeting the needs of large-scale, batch welding of fire extinguishers of different specifications, improving the efficiency and quality of large-scale, batch welding of fire extinguishers of different specifications; In addition, after each adjustment of the position of the first support plate 4 on one side, the limiting wheel 48 will re-enter the first limiting groove 44, and the resistance generated after the two come into contact will restrict the adjustment wheel 40 from rotating on the base frame 3, thereby achieving mechanical locking of the first support plate 4 on the base frame 3. No additional power is required to apply support force to the first support plate 4, thereby improving the service life of the power unit. Furthermore, the second drive wheel 55 is rotated by the third motor 54, causing the limiting block 56 on one side of the second drive wheel 55 to slide out of the second limiting groove 52, releasing the restriction on the sliding of the second support plate 5 on the first support plate 4. Then, the lever 57 on the other side of the second drive wheel 55 contacts the lever groove 53, and the resulting force is transmitted through the second drive wheel 55 and the third motor 54, causing the second support plate 5 to move relative to the first support plate 4, thereby adapting to different cylinder heights and meeting the needs of large-scale, batch welding of fire extinguishers of different specifications, improving the efficiency and quality of large-scale, batch welding of fire extinguishers of different specifications. At the same time, after each time the second support plate 5 slides on the first support plate 4, the limiting block 56 re-contacts the second limiting groove 52. The resistance generated after the two contact restricts the sliding of the second support plate 5 relative to the first support plate 4, thereby achieving mechanical locking of the first support plate 4 on the base frame 3. No additional power is required to apply support force to the second support plate 5, thereby improving the service life of the power unit.

Claims

1. A welding apparatus for producing fire-fighting equipment, comprising a welding mechanism for welding fire extinguishers and a fixing clamp for fixing fire extinguishers, wherein the fire extinguisher comprises a cylinder (1) and end caps (2) disposed at both ends of the cylinder (1), characterized in that: The fixing fixture includes a base frame (3), and a first support plate (4) and a second support plate (5) rotatably mounted on the base frame (3). The first support plate (4) and the second support plate (5) are each provided with a movable frame (6) in the radial direction. The end of the movable frame (6) is rotatably connected to a first roller (7) that contacts the cylinder (1). The movable frame (6) is slidably connected to a slide plate (8). The welding mechanism includes a mounting seat (9) mounted on the slide plate (8). The mounting seat (9) is rotatably connected to a welding torch (10). The welding torch (10) is rotatably connected to a second roller (11) and a third roller (12) that contacts the cylinder (1). The first support plate (4) and the second support plate (5) are respectively rotatably connected to a first turntable (13) and a second turntable (14) that drive the movable frame (6) to move.

2. The welding device for fire-fighting equipment production according to claim 1, characterized in that: The first support plate (4) and the second support plate (5) are provided with a plurality of radial grooves (15), the movable frame (6) is provided with a slider (16) that slides in contact with the grooves (15), the first turntable (13) and the second turntable (14) are respectively provided with inclined grooves (17), and the end of the movable frame (6) is provided with a first guide rod (18) that slides in contact with the inclined grooves (17).

3. The welding device for fire-fighting equipment production according to claim 2, characterized in that: The movable frame (6) is provided with a first baffle (19) and a second baffle (20). A push plate (21) that contacts the slide plate (8) is provided between the first baffle (19) and the second baffle (20). The movable frame (6) is provided with a radial groove (22) that slides in contact with the first guide rod (18). A radial block (23) that connects to the push plate (21) is provided on the first guide rod (18). A first spring (24) is provided between the slide plate (8) and the first baffle (19).

4. The welding device for fire-fighting equipment production according to claim 1, characterized in that: A torsion spring (25) is provided between the welding torch (10) and the mounting base (9). An arc groove (26) is provided on the welding torch (10), and a second guide rod (27) is provided on the mounting base (9) and slidably connected to the arc groove (26).

5. The welding device for fire-fighting equipment production according to claim 1, characterized in that: The base frame (3) is provided with an electromagnet (28) that is in contact with one of the end caps (2).

6. The welding apparatus for fire-fighting equipment production according to claim 1, characterized in that: The base frame (3) is rotatably connected to a sleeve (29) that is slidably connected to the first turntable (13) and the second turntable (14). The sleeve (29) is provided with a plurality of first protrusions (30) along the vertical direction. The first turntable (13) and the second turntable (14) are respectively provided with first grooves (31) that contact the first protrusions (30). The base frame (3) is provided with a first motor (32). The movable end of the first motor (32) is provided with a drive gear (33). The sleeve (29) is provided with a driven gear (34) that meshes with the drive gear (33).

7. The welding apparatus for fire-fighting equipment production according to claim 1, characterized in that: It also includes a tray (35) that is slidably mounted on the base frame (3) and in contact with the first support plate (4). Several top blocks (36) that are in contact with the tray (35) are slidably connected vertically on the base frame (3). One side of the top block (36) is provided with an inclined surface (37). Several sliding rods (38) are slidably connected radially on the base frame (3). The end of the sliding rod (38) is rotatably connected to a fourth roller (39) that is in contact with the inclined surface (37). An adjusting wheel (40) is rotatably connected on the base frame (3). Several connecting rods (41) are rotatably connected on the adjusting wheel (40). The end of the connecting rod (41) is rotatably connected to the sliding rod (38).

8. The welding apparatus for fire-fighting equipment production according to claim 7, characterized in that: The adjusting wheel (40) is provided with an arc-shaped rack (42), and an arc-shaped block (43) is provided on one side of the arc-shaped rack (42). The arc-shaped block (43) is provided with a plurality of first limiting grooves (44). The base frame (3) is provided with a second motor (45). The movable end of the second motor (45) is provided with a first drive wheel (46). The first drive wheel (46) includes a cam (47) that meshes with the arc-shaped rack (42) and a limiting wheel (48) that contacts the first limiting groove (44).

9. A welding apparatus for fire-fighting equipment production according to claim 1, characterized in that: The first support plate (4) is provided with a support block (49) along the vertical direction. The second support plate (5) is provided with a second groove (50) that is slidably connected to the support block (49). One of the support blocks (49) is provided with a second protrusion (51). The second protrusion (51) is provided with a plurality of second limiting grooves (52). A chute (53) is provided between two adjacent second limiting grooves (52). The second support plate (5) is provided with a third motor (54). The movable end of the third motor (54) is provided with a second drive wheel (55). The two sides of the second drive wheel (55) are respectively provided with a limiting block (56) and a chute (57). The limiting block (56) contacts the second limiting groove (52) to restrict the second support plate (5) from sliding relative to the first support plate (4). The chute (57) contacts the chute (53) to drive the second support plate (5) to slide relative to the first support plate (4).

10. A welding apparatus for fire-fighting equipment production according to claim 7, characterized in that: The first support plate (4) is provided with a third limiting groove (58), and the tray (35) is slidably connected with a fifth roller (59) that contacts the third limiting groove (58). A second spring (60) is provided between the fifth roller (59) and the base frame (3), and the tray (35) is provided with a third groove (61) that slides in contact with the top block (36).

Images