An environmentally friendly semi-automatic electric arc welding machine and method for producing fire extinguisher tubes.

Abstract

This invention relates to the field of fire extinguisher processing technology, specifically to an environmentally friendly semi-automatic electric arc welding machine for producing fire extinguisher tubes. The machine includes a frame, a platform, and an electric arc welding torch. It also includes a fixed plate, a cylinder, a connecting mechanism, a feeding head, a mounting base, a reciprocating mechanism, and a grinding wheel. The fixed plate is fixedly connected to the frame. The cylinder is fixedly mounted on one end of the fixed plate. The connecting mechanism is connected to the cylinder. The feeding head and mounting base are both connected to the connecting mechanism. The reciprocating mechanism is connected to the mounting base. The grinding wheel is connected to the reciprocating mechanism. When the cylinder controls the fire extinguisher to move towards each other via the feeding head to connect with the cylinder, the connecting mechanism controls the grinding wheel to rise to fit against the weld. As the grinding wheel rises, the mounting base moves synchronously and adjusts the fit between the grinding wheel and the weld via the reciprocating mechanism. By increasing the relative rotational speed between the grinding wheel and the cylinder while controlling the grinding wheel to perform horizontal reciprocating motion, the grinding wheel's grinding efficiency at the weld position is improved.

Description

Technical Field

[0001] This invention relates to the field of fire extinguisher processing technology, specifically to an environmentally friendly semi-automatic electric arc welding machine and method for producing fire extinguisher tubes. Background Technology

[0002] A fire extinguisher is a portable fire-fighting tool. It contains chemicals used to extinguish fires. Fire extinguishers are common fire-fighting equipment, stored in public places or areas where fires may occur. Different types of fire extinguishers contain different components and are designed for different types of fires.

[0003] Fire extinguishers are made by welding the canister and the top opening. When welding fire extinguishers with existing welding equipment, the canister and the opening need to be aligned. However, at the beginning of the welding process, it is easy for the canister and the opening to shift or misalign. In addition, after the welding is completed, the welded area needs to be polished smooth before painting can be done, which is a rather cumbersome process.

[0004] To address the aforementioned problems, existing technologies provide a solution. For example, patent publication number CN118616994B provides a suspended fire extinguisher bottle mouth seat welding device for welding the bottle body and bottle mouth components that make up the main body of the fire extinguisher. The device includes a base, with a support mechanism and a clamping mechanism on the top of the base. A column is fixedly installed on the top of the base. An adjustment mechanism is installed on the side of the column near the support mechanism. A diameter-limiting grinding assembly is installed on the side of the adjustment mechanism near the support mechanism. A welding torch is fixedly installed on the side of the column near the support mechanism. The diameter-limiting grinding assembly is used for positioning and grinding fire extinguisher bodies of different diameters. This invention uses multiple adjustable grinding columns to clamp and position fire extinguisher bodies of different diameters. During the rotation of the grinding columns, the uppermost grinding column will shift to expose the connection between the bottle body and the bottle mouth, making it easier for the welding torch to weld the top of the fire extinguisher body. Although existing devices can accurately align the bottle head, body, and tail for welding, the welded area needs to be ground after welding. The existing grinding device and welding device are two separate entities, which reduces the efficiency of fire extinguisher processing.

[0005] To address this, an environmentally friendly semi-automatic electric arc welding machine and method for producing fire extinguisher tubes are proposed. Summary of the Invention

[0006] The purpose of this invention is to provide an environmentally friendly semi-automatic electric arc welding machine and method for the production of fire extinguisher tubes, which solves the problem that a separate welding device is needed to grind the fire extinguisher after welding, thus reducing the processing efficiency of the fire extinguisher.

[0007] To achieve the above objectives, the present invention provides the following technical solution: An environmentally friendly semi-automatic electric arc welding machine for producing fire extinguisher tubes includes a frame, a platform, and an electric arc welding gun. It also includes a fixed plate, a cylinder, a connecting mechanism, a feeding head, a mounting base, a reciprocating mechanism, and a grinding wheel. The fixed plate is fixedly connected to the frame. The cylinder is fixedly mounted on one end of the fixed plate. The connecting mechanism is connected to the cylinder. The feeding head and the mounting base are both connected to the connecting mechanism. The reciprocating mechanism is connected to the mounting base. The grinding wheel is connected to the reciprocating mechanism. When the cylinder controls the fire extinguisher to move towards each other via the feeding head to connect with the cylinder, the connecting mechanism controls the grinding wheel to rise to fit against the welding point. When the grinding wheel rises, the mounting base moves synchronously, and the tilting and pressing action of the reciprocating mechanism causes the grinding wheel to perform horizontal reciprocating motion while rotating and grinding, with the grinding wheel and cylinder rotating towards each other.

[0008] Optionally, to grind the weld joint, the grinding wheel can be fixed in position or movable, allowing it to move towards the weld joint during grinding. A fixed grinding wheel restricts the device to bottles of a fixed size, limiting its usability and flexibility. Adjusting the grinding wheel height allows grinding bottles of different sizes, avoiding gaps between the grinding wheel and the bottle caused by misalignment, and improving overall device flexibility. Therefore, adjusting the grinding wheel height is the preferred method for grinding bottles.

[0009] Preferably, the connecting mechanism includes a transmission unit, a transmission belt, a main bevel gear, a secondary bevel gear, a drive gear, a rack, a receiving gear, a screw, a mounting plate, and a vertical rod. The transmission unit is connected to the cylinder, and the transmission unit and the main bevel gear are connected via the transmission belt. The secondary bevel gear meshes with the main bevel gear, the drive gear is fixedly connected to the secondary bevel gear, the rack meshes with the drive gear, the receiving gear meshes with the rack, the screw is fixedly installed at one end of the receiving gear, the mounting plate is threadedly connected to the screw, the vertical rod is slidably connected to the mounting plate, and the grinding wheel is fixedly installed at the end of the vertical rod away from the mounting plate.

[0010] Preferably, the transmission unit includes a connecting plate, a servo motor, and a coupling shaft. The connecting plate is fixedly connected to the piston rod end of the cylinder. The servo motor is fixedly installed at one end of the connecting plate. The coupling shaft is fixedly installed at the output end of the servo motor. The feeding head is fixedly installed at the end of the coupling shaft away from the servo motor.

[0011] Preferably, the main bevel gear includes an arc portion and a toothed portion, the angle ratio of the toothed portion to the arc portion is 1:3, the secondary bevel gear is coaxially arranged with the drive gear, a counterweight is provided at one end of the arc portion of the main bevel gear, the counterweight is fixedly installed at the geometric center of the arc portion, the weight of the counterweight is equal to the total weight of the original teeth of the arc portion, and the center of mass of the main bevel gear coincides with the axis of rotation during rotation to eliminate the unbalanced torque caused by the missing teeth.

[0012] Preferably, the rack includes a driving tooth section, a connecting section, and a receiving tooth section. The driving tooth section and the receiving tooth section are symmetrically arranged with respect to the center line of the connecting section. The driving tooth section meshes with a driving gear, and the receiving tooth section meshes with a receiving gear. The gear ratio between the driving gear and the receiving gear is 1:1.

[0013] Optionally, when grinding the weld with a grinding wheel, the horizontal position of the grinding wheel can be left unchanged, or the reciprocating motion of the grinding wheel can be controlled to grind the weld. If the grinding wheel cannot move horizontally to grind the weld, unevenness at the weld can easily lead to uneven force on the grinding wheel, resulting in some areas not being ground and affecting the grinding quality. If the grinding wheel is controlled to reciprocate within a certain range to grind the weld, it can not only expand the grinding coverage area of ​​the grinding wheel, but also eliminate individual grinding marks, thereby improving the grinding quality and efficiency. Therefore, the method of controlling the reciprocating motion of the grinding wheel within a certain range to grind the weld is adopted.

[0014] Preferably, the reciprocating mechanism includes a drive motor, a rotating shaft, a limiting block, a bracket, a pressing block, a pressure bearing seat, a fixing block, a guide rod, a spring, and a connecting block. The drive motor is fixedly connected to the mounting seat, the rotating shaft is fixedly installed at the output end of the drive motor, the limiting block is slidably connected to the rotating shaft, the bracket is fixedly connected to the limiting block, the pressing block is fixedly installed at one end of the bracket, the fixing block is fixedly installed at the end of the rotating shaft away from the drive motor, the pressure bearing seat cooperates with the pressing block, the guide rod is slidably connected to the fixing block, the connecting block is fixedly installed at one end of the guide rod, and the spring is fixedly installed between the fixing block and the connecting block.

[0015] Preferably, the rotating shaft has a limiting groove inside, and four sets of limiting grooves are arranged circumferentially around the axis of the rotating shaft, and the limiting block cooperates with the limiting groove.

[0016] Preferably, the extrusion block has an extrusion part on one side and the pressure bearing seat has a pressure bearing part on one side. Both the extrusion part and the pressure bearing part are inclined. The width of the pressure bearing part and the extrusion part is the same as the length of the limiting groove.

[0017] Preferably, the fixing block has a guide groove inside, the guide groove is cross-shaped, the guide rod cooperates with the guide groove, the maximum stroke of the connecting block and the guide rod is consistent with the length of the limiting groove, and the end of the connecting block away from the guide rod is arc-shaped.

[0018] A method for using an environmentally friendly semi-automatic electric arc welding machine for the production of fire extinguisher tubes includes the following steps: S1: Fix the bottle head and bottle tail respectively through a feeding head, then place the bottle body on the platform, then start the cylinder. The cylinder drives the servo motor, the connecting shaft and the feeding head through the connecting plate to move the bottle head and bottle tail towards the bottle body until the bottle head, bottle body and bottle tail are connected. After the bottle head, bottle body and bottle tail are connected, the platform is lowered, and the feeding head supports the connected bottle head, bottle body and bottle tail. S2: Start the servo motor. When the servo motor drives the shaft to rotate, it drives the main bevel gear to rotate through the transmission belt. The main bevel gear drives the drive gear to rotate through the secondary bevel gear. The drive gear rotates through the rack to drive the receiving gear to rotate. When the receiving gear rotates, it drives the mounting plate to rise through the screw. When the mounting plate rises, it drives the mounting base and the grinding wheel to rise synchronously to the welding position of the bottle body through the vertical rod. S3: When the grinding wheel is in contact with the welding position, start the drive motor. The drive motor drives the rotating shaft to rotate. When the rotating shaft rotates, it drives the bracket to rotate synchronously. When the bracket rotates, it drives the extrusion block and the fixed block to rotate synchronously. When the extrusion block rotates, it and the pressure block are squeezed against each other by the elastic force of the spring itself. At the same time, it drives the limit block to move in the limit groove.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. While the bottle body is rotating for welding, the grinding wheel is controlled to come into contact with the weld after a period of time. Then, the grinding wheel and the bottle body are controlled to rotate in opposite directions, thereby increasing the relative cutting speed between the grinding wheel and the weld surface. This not only makes the grinding wheel pass over the weld surface more times per unit time, making the cutting trajectory finer, but also shortens the cutting time between the grinding wheel and the welding position, which is conducive to the rapid removal of grinding debris and heat dissipation, thereby improving the grinding efficiency.

[0020] 2. By controlling the speed of the drive motor to be faster than that of the servo motor, the relative cutting speed between the grinding wheel and the weld surface is further increased, thereby improving the grinding efficiency of the grinding wheel on the weld.

[0021] 3. When the grinding wheel grinds the welding position, the grinding wheel is controlled to move horizontally as it rotates and rises through the cooperation of the extrusion block, the pressure block and the spring. This increases the contact area between the grinding wheel and the welding position, avoids missed grinding, and thus improves the grinding efficiency of the welding position. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the connecting mechanism and the reciprocating mechanism of the present invention; Figure 3 For the present invention Figure 2 A magnified structural diagram of A in the middle; Figure 4 This is a bottom view schematic diagram of the connecting mechanism of the present invention; Figure 5 This is a three-dimensional structural diagram of the partial connection mechanism and the reciprocating mechanism of the present invention; Figure 6 This is a three-dimensional structural diagram of the reciprocating mechanism of the present invention; Figure 7 This is a cross-sectional three-dimensional structural diagram of the reciprocating mechanism of the present invention; Figure 8 For the present invention Figure 7 A magnified structural diagram of B in the diagram.

[0023] In the diagram: 1. Frame; 2. Platform; 3. Arc welding torch; 4. Fixing plate; 5. Cylinder; 6. Connecting mechanism; 61. Transmission unit; 611. Connecting plate; 612. Servo motor; 613. Coupling; 62. Transmission belt; 63. Main bevel gear; 631. Arc section; 632. Tooth section; 64. Secondary bevel gear; 65. Drive gear; 66. Rack; 661. Drive tooth section; 662. Connecting part; 663. Receiving tooth section; 67. 68. Receiving gear; 69. Screw; 60. Mounting plate; 610. Vertical rod; 7. Feeding head; 8. Mounting base; 91. Reciprocating mechanism; 92. Drive motor; 93. Rotating shaft; 94. Limiting block; 95. Bracket; 96. Extrusion block; 97. Pressure bearing seat; 98. Fixing block; 99. Guide rod; 910. Spring; 911. Connecting block; 912. Limiting groove; 913. Extrusion part; 914. Pressure bearing part; 915. Guide; 10. Grinding wheel. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. However, the embodiments described below are only some embodiments of the present invention, and not all of them. If other embodiments are obtained by those skilled in the art without creative effort, they shall fall within the protection scope of the present invention.

[0025] Reference Figures 1 to 8An environmentally friendly semi-automatic electric arc welding machine for producing fire extinguisher tubes includes a frame 1, a platform 2, and an electric arc welding gun 3. It also includes a fixed plate 4, a cylinder 5, a connecting mechanism 6, a feeding head 7, a mounting base 8, a reciprocating mechanism 9, and a grinding wheel 10. The fixed plate 4 is fixedly connected to the frame 1. The cylinder 5 is fixedly mounted on one end of the fixed plate 4. The cylinder 5 provides power for the operation of the connecting mechanism 6 and simultaneously drives the feeding head 7 to move horizontally. The connecting mechanism 6 is connected to the cylinder 5. The feeding head 7 and the mounting base 8 are both connected to the connecting mechanism 6. The feeding head 7 not only clamps the head and tail of the fire extinguisher but also drives the head and tail to move towards each other under the action of the connecting mechanism 6. The reciprocating mechanism 9 is connected to the mounting base 8 and controls the grinding wheel 10. The reciprocating motion enables the grinding wheel to rotate and grind the weld joint while simultaneously moving horizontally, thereby increasing the grinding area of ​​the grinding wheel 10. This not only improves grinding efficiency but also enhances grinding quality. The grinding wheel 10 is connected to the reciprocating mechanism 9. When the cylinder 5 controls the fire extinguisher to move towards each other through the feeding head 7 to connect with the bottle, the connecting mechanism 6 controls the grinding wheel 10 to rise and fit against the weld joint. When the grinding wheel 10 rises, the mounting base 8 moves synchronously, and through the tilting and squeezing action of the reciprocating mechanism 9, the grinding wheel 10 performs horizontal reciprocating motion while rotating and grinding. Furthermore, the grinding wheel 10 rotates towards the bottle, and the speed of the drive motor 91 can be controlled to be faster than that of the servo motor 612. Through the above settings, the relative speed between the grinding wheel 10 and the weld joint of the bottle can be increased, thereby improving grinding efficiency.

[0026] As one embodiment of the present invention, refer to Figures 2 to 5The connecting mechanism 6 includes a transmission unit 61, a transmission belt 62, a main bevel gear 63, a secondary bevel gear 64, a drive gear 65, a rack 66, a receiving gear 67, a screw 68, a mounting plate 69, and a vertical rod 610. The transmission unit 61 is connected to the cylinder 5. Through the setting of the transmission unit 61, power can be provided to the feeding head 7 and the transmission belt 62. The transmission unit 61 and the main bevel gear 63 are connected by the transmission belt 62. The main bevel gear 63 includes an arc portion 631 and a tooth portion 632. The angle ratio between the tooth portion 632 and the arc portion 631 is 1:3. Through the above setting, the meshing time of the main bevel gear 63 and the secondary bevel gear 64 can be limited, preventing the secondary bevel gear 64 from rotating continuously, while the main bevel gear 63 can be engaged in the transmission unit 61. The primary bevel gear 63 rotates continuously under the action of the transmission belt 62, but this does not affect the motion or rest of the secondary bevel gear 64. A counterweight is provided at one end of the arc portion 631 of the primary bevel gear 63, fixedly installed at the geometric center of the arc portion 631. The weight of the counterweight is equal to the total weight of the original teeth of the arc portion 631. During rotation, the center of mass of the primary bevel gear 63 coincides with the axis of rotation to eliminate the unbalanced torque caused by missing teeth. This arrangement prevents deviations in the rotation of the primary bevel gear 63 and ensures stable rotation. The secondary bevel gear 64 is coaxially arranged with the drive gear 65 and meshes with the primary bevel gear 63. The primary bevel gear 63 and the secondary bevel gear 64 have the same tooth profile parameters and pitch circle diameter. Furthermore, the main bevel gear 63 is an incomplete bevel gear, with its teeth distributed only within a preset angular range in the circumferential direction. When the transmission unit 61 drives the main bevel gear 63 to rotate continuously via the transmission belt 62, the secondary bevel gear 64 is driven to rotate only during the period when the toothed portion 632 and the secondary bevel gear 64 are engaged. During the period when the arc portion 631 and the secondary bevel gear 64 are opposite each other, the secondary bevel gear 64 remains stationary. The drive gear 65 is fixedly connected to the secondary bevel gear 64. Through the above arrangement, the drive gear 65 can be driven to rotate synchronously when the secondary bevel gear 64 rotates. The rack 66 meshes with the drive gear 65. The rack 66 includes a drive toothed portion 661, a connecting portion 662, and a receiving toothed portion 663. The drive toothed portion 661 and the receiving toothed portion 663 are aligned with the center line of the connecting portion 662. The device is configured such that the driving gear 661 meshes with the driving gear 65, and the receiving gear 663 meshes with the receiving gear 67. This configuration allows the receiving gear 67 to rotate synchronously when the driving gear 65 rotates. The gear ratio between the driving gear 65 and the receiving gear 67 is 1:1. This configuration ensures that the rotation of the driving gear 65 and the receiving gear 67 is consistent, thus improving the stability of the device's operation. The receiving gear 67 meshes with a rack 66, and a screw 68 is fixedly installed at one end of the receiving gear 67. This configuration allows the screw 68 to rotate synchronously during the rotation of the receiving gear 67. The mounting plate 69 is threadedly connected to the screw 68. This configuration allows the mounting plate 69 to be raised and lowered during the rotation of the screw 68.The vertical rod 610 is slidably connected to the mounting plate 69. Two sets of vertical rods 610 are symmetrically arranged around the center line of the mounting plate 69. This arrangement allows the vertical rods 610 to rise and fall synchronously when the mounting plate 69 is raised or lowered. Simultaneously, it guides and limits the rise and fall of the mounting plate 69, preventing it from rotating due to the rotation of the screw 68, thus ensuring smooth raising and lowering of the mounting plate 69. The grinding wheel 10 is fixedly installed at the end of the vertical rod 610 away from the mounting plate 69. This arrangement allows the grinding wheel 10 to rise and fall synchronously with the vertical rod 610.

[0027] As one embodiment of the present invention, refer to Figure 2 The transmission unit 61 includes a connecting plate 611, a servo motor 612, and a coupling 613. The connecting plate 611 is fixedly connected to the piston rod end of the cylinder 5. The servo motor 612 is fixedly installed at one end of the connecting plate 611. The servo motor 612 provides power to the coupling 613 and the transmission belt 62. The coupling 613 is fixedly installed at the output end of the servo motor 612. The coupling 613 connects the servo motor 612 to the feeding head 7. The servo motor 612 drives the coupling 613 to rotate, which in turn drives the feeding head 7 to rotate. This allows the connected bottle head, bottle body, and bottle tail to rotate synchronously, facilitating 360-degree welding and grinding at the connection point. The feeding head 7 is fixedly installed at the end of the coupling 613 away from the servo motor 612. Both the coupling 613 and the outer wall of the main bevel gear 63 are equipped with pulleys. The pulleys facilitate the installation of the transmission belt 62, thus achieving a closed-loop transmission.

[0028] As one embodiment of the present invention, refer to Figure 4 , Figure 6 , Figure 7 and Figure 8The reciprocating mechanism 9 includes a drive motor 91, a rotating shaft 92, a limiting block 93, a bracket 94, a pressing block 95, a pressure seat 96, a fixing block 97, a guide rod 98, a spring 99, and a connecting block 910. The drive motor 91 is fixedly connected to the mounting base 8, which facilitates the installation of the drive motor 91. The rotating shaft 92 is fixedly installed at the output end of the drive motor 91, enabling the drive motor 91 to rotate. The limiting block 93 is slidably connected to the rotating shaft 92, and the bracket 94 is fixedly connected to the limiting block 93. Through the above arrangement, the limiting block 93 connects the rotating shaft 92 to the bracket 94, and the bracket 94 allows for the adjustment of the grinding wheel 10. For installation, the bracket 94 has a baffle at one end and an opening at the other end. The end of the rotating shaft 92 near the opening of the bracket 94 is not connected to the mounting base 8. This arrangement facilitates the replacement of the grinding wheel 10. The pressing block 95 is fixedly installed at one end of the bracket 94, and the fixing block 97 is fixedly installed at the end of the rotating shaft 92 away from the drive motor 91. This arrangement allows the pressing block 95 and the fixing block 97 to rotate respectively when the rotating shaft 92 and the bracket 94 rotate. The pressure seat 96 cooperates with the pressing block 95. This arrangement allows the pressure seat 96 and the pressing block 95 to press against each other when the bracket 94 rotates, thereby driving the bracket 94 to move horizontally and simultaneously causing the limiting block 93 to move horizontally within the limiting groove 911. The limiting block 93 and the limiting groove 911 guide and limit the horizontal movement of the bracket 94, preventing the bracket 94 from tilting during horizontal movement and preventing it from rotating on its own while following the rotation shaft 92. The guide rod 914 98 is slidably connected to the fixed block 97, and the connecting block 910 is fixedly installed at one end of the guide rod 914 98. Through the above arrangement, the fixed block 97 and the mounting base 8 can be connected. When the rotation shaft 92 rotates, it can control the connecting block 910 to rotate synchronously. The spring 99 is fixedly installed between the fixed block 97 and the connecting block 910. The elastic force of the spring 99 is greater than the total weight of the limiting block 93, the bracket 94, the grinding wheel 10, the pressing block 95, and the fixed block 97. The system is designed to control the grinding wheel to reset when the extrusion block 95 moves downwards, thereby achieving the reciprocating motion of the grinding wheel. A limit groove 911 is provided inside the rotating shaft 92, with four sets of limit grooves circumferentially arranged around the axis of the rotating shaft 92. The limit block 93 cooperates with the limit groove 911. The limit groove 911 provides space for the movement of the limit block 93 and prevents the support 94 from tilting during movement. An extrusion section 912 is provided on one side of the extrusion block 95, with two sets of extrusion sections symmetrically arranged around the center line of the extrusion block 95. The arrangement of the two sets of extrusion sections 912 enables the reciprocating motion of the grinding wheel disc 10. A pressure bearing section 913 is provided on one side of the pressure seat 96. Both the extrusion section 912 and the pressure bearing section 913 are inclined.The width of the pressure-bearing part 913 and the extrusion part 912 are the same as the length of the limiting groove 911. This design limits the horizontal movement distance of the grinding wheel. A guide groove 914 is provided inside the fixing block 97. The guide groove 914 is cross-shaped, and the guide rod 914 98 cooperates with it. The guide groove 914 facilitates the sliding connection between the fixing block 97 and the connecting block 910. It also allows the fixing block 97 to rotate synchronously with the rotating shaft 92, driving the connecting block 910 to rotate synchronously. The maximum stroke of the connecting block 910 and the guide rod 914 98 is the same as the length of the limiting groove 911. This design allows for synchronous movement between the fixing block 97, the bracket 94, and the extrusion block 95. The end of the connecting block 910 away from the guide rod 914 98 is arc-shaped. This design improves the smoothness of the transition between the connecting block 910 and the mounting base 8, while also preventing excessive friction between them.

[0029] A stamping method for an environmentally friendly semi-automatic electric arc welding machine used in the production of fire extinguisher tubes includes the following steps: S1: Fix the bottle head and bottle tail respectively through a feeding head 7, then place the bottle body on the platform 2, then start the cylinder 5. The cylinder 5 drives the servo motor 612, the connecting shaft 613 and the feeding head 7 through the connecting plate 611 to move the bottle head and bottle tail towards the bottle body until the bottle head, bottle body and bottle tail are connected. After the bottle head, bottle body and bottle tail are connected, the platform 2 is lowered, and the feeding head 7 supports the connected bottle head, bottle body and bottle tail. S2: Start the servo motor 612. When the servo motor 612 drives the shaft 613 to rotate, it drives the main bevel gear 63 to rotate through the transmission belt 62. The main bevel gear 63 drives the drive gear 65 to rotate through the secondary bevel gear 64. The drive gear 65 rotates through the rack 66 to drive the receiving gear 67 to rotate. When the receiving gear 67 rotates, it drives the mounting plate 69 to rise through the screw 68. When the mounting plate 69 rises, it drives the mounting base 8 and the grinding wheel 10 to rise synchronously to the welding position of the bottle body through the vertical rod 610 and fit together. S3: When the grinding wheel 10 is in contact with the welding position, the drive motor 91 is started. The drive motor 91 drives the rotating shaft 92 to rotate. When the rotating shaft 92 rotates, it drives the bracket 94 to rotate synchronously. When the bracket 94 rotates, it drives the pressing block 95 and the fixing block 97 to rotate synchronously. When the pressing block 95 rotates, it and the pressure block are squeezed against each other by the elastic force of the spring 99. At the same time, it drives the limiting block 93 to move in the limiting groove 911.

[0030] Although the embodiments of the present invention have been described in detail with reference to the accompanying drawings, those skilled in the art can make changes, modifications, substitutions and variations to these embodiments without departing from the principles and spirit of the present invention. The appended claims and their equivalents define the scope of the present invention.

Claims

1. An environmentally friendly semi-automatic electric arc welding machine for producing fire extinguisher tubes, comprising a frame (1), a platform (2), and an electric arc welding torch (3), characterized in that: It also includes a fixed plate (4), a cylinder (5), a connecting mechanism (6), a feeding head (7), a mounting base (8), a reciprocating mechanism (9), and a grinding wheel (10). The fixed plate (4) is fixedly connected to the frame (1). The cylinder (5) is fixedly installed at one end of the fixed plate (4). The connecting mechanism (6) is connected to the cylinder (5). The feeding head (7) and the mounting base (8) are both connected to the connecting mechanism (6). The reciprocating mechanism (9) is connected to the mounting base (8). The grinding wheel (10) is connected to the reciprocating mechanism (9). When the cylinder (5) controls the fire extinguisher to move from end to end to connect with the bottle body through the feeding head (7), the connecting mechanism (6) controls the grinding wheel (10) to rise to fit with the welding point. When the grinding wheel (10) rises, the mounting base (8) moves synchronously, and the grinding wheel (10) is made to move horizontally and reciprocate at the same time as rotating and grinding through the inclined pressing cooperation of the reciprocating mechanism (9). The grinding wheel (10) and the bottle body rotate towards each other.

2. The environmentally friendly semi-automatic electric arc welding machine for producing fire extinguisher tubes according to claim 1, characterized in that: The connecting mechanism (6) includes a transmission unit (61), a transmission belt (62), a main bevel gear (63), a secondary bevel gear (64), a drive gear (65), a rack (66), a receiving gear (67), a screw (68), a mounting plate (69), and a vertical rod (610). The transmission unit (61) is connected to the cylinder (5). The transmission unit (61) and the main bevel gear (63) are connected by the transmission belt (62). The secondary bevel gear (64) and the main bevel gear (63) are connected by the transmission belt (62). The drive gear (65) is fixedly connected to the secondary bevel gear (64), the rack (66) meshes with the drive gear (65), the receiving gear (67) meshes with the rack (66), the screw (68) is fixedly installed at one end of the receiving gear (67), the mounting plate (69) is threadedly connected to the screw (68), the vertical rod (610) is slidably connected to the mounting plate (69), and the grinding wheel (10) is fixedly installed at the end of the vertical rod (610) away from the mounting plate (69).

3. The environmentally friendly semi-automatic electric arc welding machine for producing fire extinguisher tubes according to claim 1, characterized in that: The transmission unit (61) includes a connecting plate (611), a servo motor (612), and a coupling (613). The connecting plate (611) is fixedly connected to the piston rod end of the cylinder (5). The servo motor (612) is fixedly installed at one end of the connecting plate (611). The coupling (613) is fixedly installed at the output end of the servo motor (612). The feeding head (7) is fixedly installed at the end of the coupling (613) away from the servo motor (612).

4. The environmentally friendly semi-automatic electric arc welding machine for producing fire extinguisher tubes according to claim 3, characterized in that: The main bevel gear (63) includes an arc portion (631) and a tooth portion (632). The angle ratio between the tooth portion (632) and the arc portion (631) is 1:

3. The secondary bevel gear (64) and the drive gear (65) are coaxially arranged. A counterweight is provided at one end of the arc portion (631) of the main bevel gear (63). The counterweight is fixedly installed at the geometric center of the arc portion (631). The weight of the counterweight is equal to the total weight of the original teeth of the arc portion (631). During the rotation of the main bevel gear (63), the center of mass coincides with the axis of rotation to eliminate the unbalanced torque caused by the missing teeth.

5. The environmentally friendly semi-automatic electric arc welding machine for producing fire extinguisher tubes according to claim 4, characterized in that: The rack (66) includes a driving tooth (661), a connecting part (662) and a receiving tooth (663). The driving tooth (661) and the receiving tooth (663) are symmetrically arranged about the center line of the connecting part (662). The driving tooth (661) meshes with the driving gear (65), and the receiving tooth (663) meshes with the receiving gear (67). The gear ratio of the driving gear (65) and the receiving gear (67) is 1:

1.

6. The environmentally friendly semi-automatic electric arc welding machine for producing fire extinguisher tubes according to claim 5, characterized in that: The reciprocating mechanism (9) includes a drive motor (91), a rotating shaft (92), a limiting block (93), a bracket (94), a pressing block (95), a pressure seat (96), a fixing block (97), a guide rod (98), a spring (99), and a connecting block (910). The drive motor (91) is fixedly connected to the mounting base (8). The rotating shaft (92) is fixedly installed at the output end of the drive motor (91). The limiting block (93) is slidably connected to the rotating shaft (92). The bracket (94) is fixedly connected to the mounting base (8). The compression block (95) is fixedly connected to the limiting block (93), the compression block (95) is fixedly installed at one end of the bracket (94), the fixing block (97) is fixedly installed at the end of the rotating shaft (92) away from the drive motor (91), the pressure seat (96) cooperates with the compression block (95), the guide rod (98) is slidably connected to the fixing block (97), the connecting block (910) is fixedly installed at one end of the guide rod (98), and the spring (99) is fixedly installed between the fixing block (97) and the connecting block (910).

7. An environmentally friendly semi-automatic electric arc welding machine for producing fire extinguisher tubes according to claim 6, characterized in that: The rotating shaft (92) has a limiting groove (911) inside. The limiting groove (911) has four sets arranged around the axis of the rotating shaft (92). The limiting block (93) cooperates with the limiting groove (911).

8. An environmentally friendly semi-automatic electric arc welding machine for producing fire extinguisher tubes according to claim 7, characterized in that: The extrusion block (95) has an extrusion part (912) on one side and a pressure bearing part (913) on one side of the pressure bearing seat (96). Both the extrusion part (912) and the pressure bearing part (913) are inclined. The width of the pressure bearing part (913) and the extrusion part (912) is the same as the length of the limiting groove (911).

9. An environmentally friendly semi-automatic electric arc welding machine for producing fire extinguisher tubes according to claim 8, characterized in that: The fixed block (97) has a guide groove (914) inside. The guide groove (914) is cross-shaped. The guide rod (98) cooperates with the guide groove (914). The maximum stroke of the connecting block (910) and the guide rod (98) is consistent with the length of the limiting groove (911). The end of the connecting block (910) away from the guide rod (98) is arc-shaped.

10. A method of using an environmentally friendly semi-automatic electric arc welding machine suitable for the production of fire extinguisher tubes according to any one of claims 1-9, characterized in that, Includes the following steps: S1: Fix the bottle head and bottle tail respectively through a feeding head (7), then place the bottle body on the platform (2), then start the cylinder (5), the cylinder (5) drives the servo motor (612), the connecting shaft (613) and the feeding head (7) through the connecting plate (611) to drive the bottle head and bottle tail to move towards the bottle body until the bottle head, bottle body and bottle tail are connected. After the bottle head, bottle body and bottle tail are connected, the platform (2) descends and the feeding head (7) supports the connected bottle head, bottle body and bottle tail. S2: Start the servo motor (612). When the servo motor (612) drives the connecting shaft (613) to rotate, it drives the main bevel gear (63) to rotate through the transmission belt (62). The main bevel gear (63) drives the drive gear (65) to rotate through the secondary bevel gear (64). The drive gear (65) rotates and drives the receiving gear (67) to rotate through the rack (66). When the receiving gear (67) rotates, it drives the mounting plate (69) to rise through the screw (68). When the mounting plate (69) rises, it drives the mounting base (8) and the grinding wheel (10) to rise synchronously to the welding position of the bottle body through the vertical rod (610). S3: When the grinding wheel (10) is in contact with the welding position, start the drive motor (91). The drive motor (91) drives the rotating shaft (92) to rotate. When the rotating shaft (92) rotates, it drives the bracket (94) to rotate synchronously. When the bracket (94) rotates, it drives the pressing block (95) and the fixed block (97) to rotate synchronously. When the pressing block (95) rotates, it and the pressure block are squeezed against each other by the elastic force of the spring (99). At the same time, it drives the limiting block (93) to move in the limiting groove (911).

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