Fire extinguisher girth welding device

Abstract

The invention relates to the technical field of welding devices, and discloses a fire extinguisher girth welding device which comprises an operation table, two translation guide mechanisms are arranged on the front side of the upper surface of the operation table, a positioning mechanism is slidably arranged on the upper portions of the two translation guide mechanisms, and a protection assembly is arranged on the outer surface of the positioning mechanism. The protection assembly comprises a support fixedly connected to the outer surface of the positioning mechanism, a vertical rod movably penetrates through the middle of the support, a top seat is fixedly connected to the top end of the vertical rod, a sheet plate is movably connected to the side edge of the top seat, and a straight protection plate is fixedly connected to the side, away from the top seat, of the sheet plate. The protection assemblies are installed on the positioning mechanisms on the two sides of the support and can rotate along with movement of the positioning assemblies, the shielding precision of the straight protection plate on circular seam strong light is high during welding, the protection coverage range is remarkably expanded, the influence of strong light radiation on surrounding operators is reduced, and the welding quality is improved. And the operation link of manually and frequently switching protection equipment is omitted, and the operation convenience is improved.

Description

Technical Field

[0001] This invention relates to the field of welding equipment technology, and in particular to a welding device for circumferential seams of fire extinguishers. Background Technology

[0002] Fire extinguishers are portable fire-fighting equipment used to extinguish initial fires. Their core components include a pressure-resistant tank, valves, and a spray device. The tank is mostly made of metal and must possess high strength and sealing properties. Common types include dry powder, carbon dioxide, and water-based extinguishers. They are widely used in buildings, transportation vehicles, and other scenarios, and are key equipment for fire safety. The circumferential welding device for fire extinguishers is the core equipment in tank manufacturing. It is mainly used to weld the annular joint between the upper and lower end caps and the cylinder body. Its core structure includes a tank positioning bracket, a circumferential welding head, and a transmission mechanism. The welding head is driven to move along the circumferential joint through purely mechanical or electromechanical methods, ensuring a uniform, sealed weld with sufficient strength.

[0003] In the prior art, Chinese patent document CN210878028U discloses a welding device for fire extinguishers, including a fixed frame and a fire extinguisher. The fixed frame has a through hole at its left end, and several steel balls are arranged around the inner cavity of the through hole. A fixing ring is movably connected to the inner side of each steel ball. This invention uses the fixing rings to limit and support the top of the fire extinguisher. Then, by turning the threaded rod, a rubber pad is moved closer to the bottom of the fire extinguisher, further fixing the fire extinguisher within the fixed frame. Then, by pressing down the T-shaped push rod, the welding torch and welding needle are driven to weld the fire extinguisher and the base. A return spring can reset the welding torch after welding, further reducing hand pain caused by prolonged holding of the welding torch. A slider slides within a groove, allowing the semi-circular blocking block to contact and separate from the bottom of the fire extinguisher, thus fixing and rotating the fire extinguisher, further facilitating rotary welding.

[0004] Regarding the above-mentioned and existing related technologies, the inventors believe that the following defects often exist: In the circumferential welding process of small fire extinguisher production workshops, workers need to manually assist in the loading and unloading of the tanks and monitor the welding process throughout the entire process to check for abnormalities such as weld seam deviation and slag spatter in real time. The strong light generated by the welding operation is highly irritating, and workers need to observe the work surface by wearing or holding protective lenses. However, the protective range of the protective lenses is limited, which can easily cause light radiation to personnel in the vicinity who are not wearing protective equipment. At the same time, workers in this position need to frequently switch between wearing and removing protective lenses in order to take into account observation and other operations. The operation process is cumbersome and increases the inconvenience of the operation. Summary of the Invention

[0005] The technical problem to be solved by the present invention is that the existing technology has the disadvantages of circumferential welding of small fire extinguisher workshops, manual loading and unloading and on-site monitoring, limited protection of protective glasses and enclosures that disturb others, and inconvenience of frequent switching. To this end, we propose a circumferential welding device for fire extinguishers.

[0006] To achieve the above objectives, this application adopts the following technical solution: a fire extinguisher circumferential weld device, including an operating table, two sets of translational guide mechanisms are provided on the front side of the upper surface of the operating table, a positioning mechanism is slidably provided on the upper part of the two sets of translational guide mechanisms, a protective component is provided on the outer surface of the positioning mechanism, an adjustment component is provided inside the protective component, and a flipping component is provided on the upper part of the protective component. The protective component includes a support fixedly connected to the outer surface of the positioning mechanism, a vertical rod movably inserted through the middle of the support, a top seat fixedly connected to the top of the vertical rod, a plate movably connected to the side of the top seat, and a straight guard plate fixedly connected to the side of the plate away from the top seat.

[0007] Preferably, the vertical rod is rotatably connected to the support, a gear is fixedly sleeved on the outer surface of the bottom end of the vertical rod, and a rack is fixedly connected to the upper surface of the operating table, with the gear meshing with the rack.

[0008] Preferably, the adjustment assembly includes an inner rod fixedly connected to the side of the straight guard plate, the inner rod being rotatably connected to the inside of the top seat, and a handle being fixedly connected to the end of the straight guard plate away from the inner rod.

[0009] Preferably, the top seat has a side rod slidably connected inside, a positioning block is fixedly connected to the middle of the side rod, and the outer surface of the inner rod has grooves arranged in a ring array, with the positioning block engaging inside the grooves.

[0010] Preferably, an extension rod is fixedly connected to the outer surface of the side rod, a connecting rod is hinged to the end of the extension rod away from the side rod, and a spring is provided at the end of the connecting rod away from the extension rod.

[0011] Preferably, the flipping assembly includes a shaft that is movably inserted into the upper part of the straight guard plate, the outer surface of the shaft is fixedly fitted with an arc-shaped guard plate, and the end of the shaft passes through a plate.

[0012] Preferably, the upper surface of the straight guard plate is provided with a mounting groove, and the arc-shaped guard plate is rotatably connected inside the mounting groove.

[0013] Preferably, a torsion spring is fitted on the outer surface of the shaft, with one end of the torsion spring fixedly connected to the outer surface of the shaft and the other end fixedly connected to the outer surface of the plate.

[0014] Preferably, the outer surface of the plate has a cavity, a wedge is slidably connected inside the cavity, the upper surface of the wedge is set as an inclined surface, a spring is fixedly connected to one end of the wedge extending into the cavity, the end of the spring away from the wedge is fixedly connected to the inner wall of the cavity, and a strip plate is fixedly connected to the outer surface of the shaft.

[0015] Preferably, a support is provided in the middle of the upper surface of the operating table, a welding mechanism is provided on the rear side of the support, and two sets of positioning mechanisms are symmetrically arranged on both sides of the support.

[0016] The technical effects and advantages of this invention are as follows: In this invention, by installing protective components on the positioning mechanisms on both sides of the bracket, and the protective components can rotate as the positioning components move, the straight protective plate has high accuracy in blocking strong light from the circumferential seam during welding, significantly expanding the protective coverage area, reducing the impact of strong light radiation on surrounding workers, and eliminating the need for frequent manual switching of protective equipment, thus improving the convenience of operation. In this invention, the tilt angle of the straight guard plate is controlled by setting an adjustment component. The operator can adjust the optimal observation angle according to their own situation. The controllability of the angle rotation is achieved by using the inner rod to fix the angle rotation and limit the position within the top seat. After each rotation to a fixed angle, the plate is locked, which facilitates the positioning effect after angle adjustment. In this invention, by adding a rotatable arc-shaped guard plate to the straight guard plate, not only is the protection range of the straight guard plate increased, but the position of the arc-shaped guard plate can also be actively adjusted according to the welding situation, making it easier for workers to observe the welding situation more carefully and take corresponding actions, thus improving practicality. Attached Figure Description

[0017] The disclosure of this invention is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this invention. In the drawings, the same reference numerals are used to refer to the same parts: Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the device state switching structure of the present invention; Figure 3 This is a schematic diagram of the cooperation structure between the translational guide mechanism and the protective component of the present invention; Figure 4 This is a first-view structural diagram of the protective component of the present invention; Figure 5 This is a second-view structural diagram of the protective component of the present invention; Figure 6 This is a schematic diagram of the adjustment component structure of the present invention; Figure 7This is a schematic diagram of the internal structure of the top seat of the present invention; Figure 8 This is a schematic diagram of the flip component structure of the present invention; Figure 9 This is a schematic diagram of the internal structure of the sheet metal of the present invention.

[0018] Legend: 1. Operating table; 2. Support; 3. Welding mechanism; 4. Translation guide mechanism; 5. Positioning mechanism; 6. Protective component; 61. Support; 62. Vertical rod; 63. Top seat; 64. Plate; 65. Straight guard plate; 66. Gear; 67. Rack; 7. Adjustment component; 71. Inner rod; 72. Positioning block; 73. Groove; 74. Side rod; 75. Extension rod; 76. Connecting rod; 77. Spring 1; 78. Handle; 8. Flipping component; 81. Arc-shaped guard plate; 82. Mounting groove; 83. Shaft; 84. Torsion spring; 85. Strip plate; 86. Cavity; 87. Wedge block; 88. Spring 2. Detailed Implementation

[0019] It is readily understood that, based on the technical solution of this invention, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of the invention. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative examples of the technical solution of this invention and should not be considered as the entirety of the invention or as limitations or restrictions on the technical solution of this invention.

[0020] Reference Figures 1 to 9 As shown, the present invention provides a technical solution: a fire extinguisher circumferential seam welding device, including an operating table 1. Two sets of translational guide mechanisms 4 are provided on the front side of the upper surface of the operating table 1. A positioning mechanism 5 is slidably provided on the upper part of the two sets of translational guide mechanisms 4. A protective component 6 is provided on the outer surface of the positioning mechanism 5. An adjustment component 7 is provided inside the protective component 6. A flipping component 8 is provided on the upper part of the protective component 6. A bracket 2 is provided in the middle of the upper surface of the operating table 1. A welding mechanism 3 is provided on the rear side of the bracket 2. The two sets of positioning mechanisms 5 are symmetrically arranged on both sides of the bracket 2.

[0021] The middle part of the fire extinguisher tank to be welded is placed in the positioning position on the upper part of the support 2. Then, the fire extinguisher base and top cover are respectively installed into the clamping cavities of the positioning mechanisms 5 on both sides to complete the pre-positioning of the workpiece. The two sets of translational guide mechanisms 4 are activated to drive the corresponding side positioning mechanisms 5 to move synchronously towards the middle support 2 until the base and top cover are precisely docked and engaged with the two ends of the tank, realizing the overall coaxial positioning of the workpiece. During this process, the protective components 6 rotate synchronously with the displacement of the positioning mechanism 5 to the preset protective position on the front side of the support 2. The two sets of protective components 6 respectively shield the circumferential weld area at both ends of the tank, constructing a safe protective space for welding operations and providing protection for subsequent welding processes. After the welding mechanism 3 is started, the positioning mechanism 5 activates its built-in rotation function, causing the workpiece to rotate at a constant speed around the axis, so that the welding mechanism 3 can perform continuous welding of the circumferential seam in all directions. The operator can adjust the tilt angle of the protective component 6 in real time through the adjustment component 7 to obtain the best observation angle of the welding area, which is convenient for monitoring the welding quality. If an abnormality occurs during the welding process, after the welding mechanism 3 is turned off, the posture of the protective component 6 can be quickly adjusted by operating the flip component 8 to expose the welding area, providing operating space for the staff to carry out detailed inspection and troubleshooting, and ensuring the continuity and safety of the operation.

[0022] Reference Figures 2 to 4 As shown, the protective component 6 includes a support 61 fixedly connected to the outer surface of the positioning mechanism 5. A vertical rod 62 is movably inserted through the middle of the support 61. A top seat 63 is fixedly connected to the top of the vertical rod 62. A plate 64 is movably connected to the side of the top seat 63. A straight guard plate 65 is fixedly connected to the side of the plate 64 away from the top seat 63. The vertical rod 62 is rotatably connected to the support 61. A gear 66 is fixedly sleeved on the outer surface of the bottom end of the vertical rod 62. A rack 67 is fixedly connected to the upper surface of the operating table 1. The gear 66 and the rack 67 are meshed together.

[0023] During the displacement action of the translation guide mechanism 4 driving the positioning mechanism 5, the bottom gear 66 of the vertical rod 62, which is rotatably connected to the positioning component through the support 61, moves synchronously. Under the meshing and limiting action of the rack 67, it generates rotational motion. After the rotational torque is transmitted to the vertical rod 62, it drives the vertical rod 62 to rotate around the axis within the support 61, thereby driving the top seat 63 at the top of the vertical rod 62 to move in tandem, so that the straight guard plate 65 completes the angle conversion from the side away from the support 2 to the side close to the support 2. After the straight guard plate 65 moves to the preset position at the end of the support 2, its spatial position corresponds exactly to the fire extinguisher circumferential seam area, which can form an effective shield. During the welding operation, it achieves physical blocking of strong light radiation and avoids the direct leakage of strong light. After the welding process is completed, the translation guide mechanism 4 reverses and drives the positioning mechanism 5 to retract, and the protective component 6 is reset to the initial standby position. The straight guard plate 65 rotates synchronously to the avoidance position away from the support 2 under the transmission of gear 66 and rack 67, providing sufficient space for the handling of fire extinguisher workpieces. The protective component 6 realizes the automated control of the opening and closing of the straight guard plate 65 through mechanical transmission, eliminating the need for manual adjustment of the protective lens. During welding, the straight guard plate 65 has high accuracy in blocking strong light from the circumferential seam, significantly expanding the protective coverage area and reducing the impact of strong light radiation on surrounding workers. At the same time, it eliminates the need for frequent manual switching of protective equipment, which not only improves the convenience of operation but also effectively shortens the process interval time, thus helping to improve the overall operation efficiency.

[0024] Reference Figures 4 to 7As shown, the adjustment assembly 7 includes an inner rod 71 fixedly connected to the side of the straight guard plate 65. The inner rod 71 is rotatably connected to the inside of the top seat 63. A handle 78 is fixedly connected to the end of the straight guard plate 65 away from the inner rod 71. A side rod 74 is slidably connected to the inside of the top seat 63. A positioning block 72 is fixedly connected to the middle of the side rod 74. The outer surface of the inner rod 71 has grooves 73 arranged in an annular array. The positioning block 72 is engaged in the inside of the grooves 73. An extension rod 75 is fixedly connected to the outer surface of the side rod 74. A connecting rod 76 is hinged to the end of the extension rod 75 away from the side rod 74. A spring 77 is provided at the end of the connecting rod 76 away from the extension rod 75.

[0025] By turning the operating handle 78 on the side of the straight guard plate 65, the straight guard plate 65 can be driven to rotate around a preset axis. The other side of the straight guard plate 65 is rotatably connected to the top seat 63 through the inner rod 71. Its rotation synchronously drives the inner rod 71 to rotate along a circumferential trajectory inside the top seat 63. In the initial state, the positioning block 72 is engaged in the groove 73 of the top seat 63. The radial force generated when the inner rod 71 rotates forces the positioning block 72 to slide out of the groove 73. The positioning block 72 then drives the side rod 74 to slide in a straight line and move away from the groove 73. The side rod 74 drives the extension rod 75 and the connecting rod 76 to move synchronously through a rigid connection. When the connecting rod 76 between adjacent positioning blocks 72 moves away from each other, it stretches the spring 77, causing the spring 77 to undergo elastic deformation and store elastic potential energy. As the inner rod 71 continues to rotate, the positioning block 72 gradually approaches the next groove 73. When the positioning block 72 is aligned with the groove 73, the spring 77 releases its elastic potential energy, and the resulting rebound force pushes the positioning block 72 into the groove 73, achieving precise deflection of the straight guard plate at an angle of 65. Every time the straight guard plate 65 rotates a certain angle, the positioning block 72 will lock into the corresponding groove 73, completing the automatic angle locking. The operator can adjust the tilt angle of the straight guard plate 65 at any time according to the welding observation needs to obtain the best observation field of view and improve the convenience of welding status monitoring. In addition, the adjustment component 7 has a built-in locking function, which can effectively prevent the straight guard plate 65 from shifting due to vibration or external force interference during the subsequent flipping operation of the protective component 6, ensuring the structural stability and protective accuracy of the protective component 6 and ensuring the safety of the welding operation environment.

[0026] Reference Figures 8 to 9As shown, the flipping assembly 8 includes a shaft 83 that is movably inserted into the upper part of the straight guard plate 65. An arc-shaped guard plate 81 is fixedly sleeved on the outer surface of the shaft 83. The end of the shaft 83 passes through the plate 64. An installation groove 82 is opened on the upper surface of the straight guard plate 65. The arc-shaped guard plate 81 is rotatably connected to the inside of the installation groove 82. A torsion spring 84 is sleeved on the outer surface of the shaft 83. One end of the torsion spring 84 is fixedly connected to the outer surface of the shaft 83, and the other end is fixedly connected to the outer surface of the plate 64. A cavity 86 is opened on the outer surface of the plate 64. A wedge 87 is slidably connected inside the cavity 86. The upper surface of the wedge 87 is set as an inclined surface. A second spring 88 is fixedly connected to one end of the wedge 87 that extends into the cavity 86. The end of the second spring 88 away from the wedge 87 is fixedly connected to the inner wall of the cavity 86. A strip plate 85 is fixedly connected to the outer surface of the shaft 83.

[0027] After the welding mechanism 3 is closed, an external force pushes the arc-shaped guard plate 81 to rotate around a preset axis. This rotation simultaneously drives the shaft 83 to rotate. During the rotation of the shaft 83, it exerts a squeezing effect on the torsion spring 84, causing the torsion spring 84 to undergo elastic deformation and store elastic potential energy. At the same time, the shaft 83 drives the strip plate 85 to slide along a set trajectory through the transmission structure. When the strip plate 85 moves to the position of the wedge block 87, its end contacts the inclined surface of the wedge block 87. The thrust generated by the continuous sliding causes the wedge block 87 to retract into the cavity 86. During this process, the wedge block 87 squeezes the second spring 88, and the second spring 88 accumulates reset potential energy. After the strip plate 85 completely passes the wedge block 87, the second spring 88 releases its potential energy to push the wedge block 87 to reset, forming an axial limit on the strip plate 85. At this time, the arc-shaped guard plate 81 has rotated to the preset angle, so that the upper space of the straight guard plate 65 is completely exposed, providing operating space for the staff to observe the state of the welding area at close range and to handle abnormalities in a timely manner. After the processing is completed, the wedge 87 is pushed by external force to overcome the elastic force of the spring 88 and retract back into the cavity 86. After the strip plate 85 loses the limit of the wedge 87, the torsion spring 84 releases the stored elastic potential energy, driving the shaft 83 to rotate in the opposite direction. The shaft 83 drives the arc-shaped guard plate 81 to flip and reset synchronously. After the arc-shaped guard plate 81 returns to its initial position, its structural outline will once again form a complete shielding of the upper space of the straight guard plate 65, restoring the protective state during the welding operation, ensuring that strong light radiation does not leak during subsequent operations, and ensuring the safety of the surrounding working environment.

[0028] Working principle: When welding fire extinguishers, the middle part of the fire extinguisher tank to be welded is placed on the support 2. The base and top cover of the fire extinguisher to be welded are respectively installed in the two positioning mechanisms 5. Then, the two translational guide mechanisms 4 drive the positioning mechanisms 5 to move towards the middle support 2 until the base and top cover of the fire extinguisher are engaged at both ends of the fire extinguisher tank. Finally, the welding mechanism 3 operates to weld the joint of the fire extinguisher. During the welding process, the positioning mechanism 5 has a rotation function to achieve all-round welding of the joint. During the movement of the translation guide mechanism 4 driving the positioning mechanism 5, the protective component 6 located on the outer surface of the positioning mechanism 5 will move accordingly. The gear 66 fixed at the bottom of the vertical rod 62 will be limited by the rack 67 when it moves with the protective component 6. Under the limiting action of the rack 67, it will rotate, which will drive the vertical rod 62 to rotate inside the support 61. The top seat 63 at the top of the vertical rod 62 will rotate accordingly and drive the straight protective plate 65 to rotate from the side away from the support 2 to the side close to the support 2. After the position change, the straight protective plate 65 is at the end of the support 2, which can just block the circumferential seam of the fire extinguisher, thereby blocking the strong light during the welding process. This component can automatically complete the opening and closing action of the straight protective plate 65 without manual operation of the protective lens. During welding, the straight protective plate 65 accurately blocks the strong light of the circumferential seam, increases the protection range, avoids the light radiation impact on the surrounding personnel, saves the step of frequently switching protective equipment, and improves the convenience of operation and work efficiency. For welding operations, due to the different heights of each worker, their viewing angle for the circumferential weld also differs. With the straight guard plate 65 angle fixed, light reflection and refraction can easily cause unclear observation. In this case, workers can adjust the angle of the straight guard plate 65 by simply turning the handle 78 on the side of the straight guard plate 65, causing it to rotate. The other side of the straight guard plate 65 is rotatably connected to the top seat 63 via the inner rod 71. During the rotation of the straight guard plate 65, the inner rod 71 rotates inside the top seat 63. Since the positioning block 72 is engaged in the groove 73, the rotation of the inner rod 71 forces the positioning block 72 to slide out of the groove 73. The positioning block 72 causes the side rod 74 to slide away from the groove 73. The side rod 74 then moves the extension rod 75 and the connecting rod 76. The moving distance between the connecting rods 76 of two adjacent positioning rods pulls the spring 77, causing it to stretch and store. With the rotation of the inner rod 71, the positioning block 72 moves closer to the next groove 73. Under the action of the spring 77, the positioning block 72 is pushed into the groove 73, realizing the deflection of the straight guard plate 65. The tilt angle of the straight guard plate 65 can be changed at any time according to the needs of the operator, so as to facilitate better observation of the welding situation. Every time the straight guard plate 65 rotates a certain angle, the positioning block 72 will be locked into the corresponding groove 73, completing the automatic angle locking. The operator can adjust the tilt angle of the straight guard plate 65 at any time according to the welding observation needs to obtain the best observation field and improve the convenience of welding status monitoring. In addition, the adjustment component 7 has a built-in locking function, which can effectively prevent the straight guard plate 65 from shifting due to vibration or external force interference during the subsequent flipping operation of the protective component 6, ensuring the structural stability and protective accuracy of the protective component 6, and ensuring the safety of the welding operation environment. When an abnormality occurs during the welding process, first shut down the welding mechanism 3, then push the arc-shaped guard plate 81 to rotate. The rotation of the arc-shaped guard plate 81 will drive the shaft 83 to rotate and compress the torsion spring 84. The torsion spring 84 stores elastic potential energy. During the rotation of the shaft 83, it will drive the strip plate 85 to slide. When the strip plate 85 encounters the inclined surface of the wedge block 87, it will push the wedge block 87 to retract into the cavity 86 and compress the second spring 88. After the strip plate 85 passes the wedge block 87, the second spring 88 will push the wedge block 87 to rebound and compress the strip plate 85. When the arc-shaped guard plate 81 rotates, the upper space of the straight guard plate 65 is exposed, making it easier for the staff to observe the welding situation more carefully and take corresponding measures. After the treatment is completed, the wedge block 87 is pushed to overcome the elastic force of the spring 88 and retract back into the cavity 86. After the strip plate 85 loses the limit of the wedge block 87, the torsion spring 84 releases the stored elastic potential energy, drives the shaft 83 to rotate in the opposite direction, and the shaft 83 drives the arc-shaped guard plate 81 to flip and reset synchronously, and block the upper space of the straight guard plate 65 again. After welding is completed, welding mechanism 3 stops operating and moves away from the fire extinguisher. Translation guide mechanism 4 drives positioning mechanism 5 to move backward, and protective component 6 is reset to its initial position. Straight guard plate 65 will also rotate to a position away from bracket 2. At this time, the welded fire extinguisher can be easily removed, and the next fire extinguisher tank, base and top cover to be welded can be installed.

[0029] The technical scope of this invention is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this invention, and all such modifications and variations should fall within the protection scope of this invention.

Claims

1. An apparatus for welding the girth seam of a fire extinguisher, characterized in that, Include: The operating platform (1), the upper surface of the operating platform (1) is provided with two groups of translation guide mechanism (4), the upper part of two groups of the translation guide mechanism (4) is slidably provided with a positioning mechanism (5), the outer surface of the positioning mechanism (5) is provided with a protection assembly (6), the inside of the protection assembly (6) is provided with an adjusting assembly (7), the upper part of the protection assembly (6) is provided with a turnover assembly (8); Wherein, the protection assembly (6) includes a support (61) fixedly connected to the outer surface of the positioning mechanism (5), a vertical rod (62) movably inserted into the middle part of the support (61), a top seat (63) fixedly connected to the top end of the vertical rod (62), and a sheet plate (64) movably connected to the side of the top seat (63), wherein the straight guard plate (65) is fixedly connected to the side of the sheet plate (64) away from the top seat (63).

2. The fire extinguisher ring seam welding apparatus of claim 1, wherein: The vertical rod (62) is rotatably connected with the support (61), the bottom end outer surface of the vertical rod (62) is fixedly sleeved with a gear (66), the upper surface of the operating platform (1) is fixedly connected with a rack (67), and the gear (66) is meshingly connected with the rack (67).

3. The fire extinguisher ring seam welding apparatus of claim 1, wherein: The adjusting assembly (7) includes an inner rod (71) fixedly connected to the side of the straight guard plate (65), the inner rod (71) is rotatably connected in the inner part of the top seat (63), and the straight guard plate (65) is fixedly connected with a handle (78) away from the inner rod (71).

4. The fire extinguisher ring seam welding apparatus of claim 3, wherein: The inner part of the top seat (63) is slidably connected with a side rod (74), the middle part of the side rod (74) is fixedly connected with a positioning block (72), the outer surface of the inner rod (71) is annularly arrayed with a groove (73), and the positioning block (72) is clamped in the inner part of the groove (73).

5. The fire extinguisher ring seam welding apparatus of claim 4, wherein: The outer surface of the side rod (74) is fixedly connected with an extension rod (75), the end of the extension rod (75) away from the side rod (74) is hingedly connected with a connecting rod (76), and the end of the connecting rod (76) away from the extension rod (75) is provided with a spring (77).

6. The fire extinguisher ring seam welding apparatus of claim 1, wherein: The turnover assembly (8) includes a shaft rod (83) movably inserted into the upper part of the straight guard plate (65), the outer surface of the shaft rod (83) is fixedly sleeved with an arc-shaped guard plate (81), and the end of the shaft rod (83) penetrates the sheet plate (64).

7. The fire extinguisher ring seam welding apparatus of claim 6, wherein: The upper surface of the straight guard plate (65) is provided with a mounting groove (82), and the arc-shaped guard plate (81) is rotatably connected in the inner part of the mounting groove (82).

8. The fire extinguisher ring seam welding apparatus of claim 7, wherein: The outer surface of the shaft rod (83) is sleeved with a torsional spring (84), one end of the torsional spring (84) is fixedly connected to the outer surface of the shaft rod (83), and the other end is fixedly connected to the outer surface of the sheet plate (64).

9. The fire extinguisher ring seam welding apparatus of claim 8, wherein: The outer surface of the sheet plate (64) is provided with a cavity (86), the inner part of the cavity (86) is slidably connected with a wedge block (87), the upper surface of the wedge block (87) is provided as an inclined surface, one end of the wedge block (87) extending into the cavity (86) is fixedly connected with a spring (88), the other end of the spring (88) away from the wedge block (87) is fixedly connected to the inner wall of the cavity (86), and the outer surface of the shaft rod (83) is fixedly connected with a strip plate (85).

10. The fire extinguisher ring seam welding apparatus of claim 1, wherein: The upper surface of the operating platform (1) is provided with a support (2), the rear side of the support (2) is provided with a welding mechanism (3), and two groups of positioning mechanisms (5) are symmetrically arranged on the two sides of the support (2).

Images