Welding device for general machining

Abstract

The invention discloses a universal welding device for machining, and relates to the technical field of machining, the universal welding device comprises an operation table, the top surface of the operation table is fixedly connected with a U-shaped bracket, the inner side of the U-shaped bracket is provided with a welding device, and the welding device comprises a power part; the power part comprises a fixing box, a motor and blades, the back of the fixing box is fixedly connected with an air guide pipe in a penetrating mode, the bottom of the motor is fixedly connected with the top of the fixing box, the outer surface of the bottom end of a motor output shaft rotatably penetrates the top of the fixing box through a first bearing and extends to the inner side of the fixing box, and the outer surfaces of the blades are fixedly connected with the outer surface of the motor output shaft. By arranging the motor, the blades, the fixing box, the telescopic pipe and the connecting rod, the motor is started and drives the blades to rotate, negative pressure is generated in the fixing box, gas enters the fixing box from the lower portion of the fixing box and is exhausted from the gas guide pipe behind the fixing box, and harmful gas generated in the welding process is prevented from diffusing in a working area; and inhalation to workers is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of machining, and particularly relates to a welding device for general machining. Background Art

[0002] Machining refers to the process of changing the shape, size or performance of a workpiece through a mechanical device. According to the difference in processing methods, it can be divided into cutting processing and pressure processing. Welding is often required during machining. Welding, also known as fusion welding or brazing, is a manufacturing process that joins metals or other thermoplastic materials such as plastics by heating, high temperature or high pressure.

[0003] A Chinese patent discloses a welding device for general mechanical equipment processing, with the publication number CN114083207A, which includes a base. Two vertical plates are oppositely arranged on the base. A welding table is rotatably arranged between the two vertical plates. A clamping mechanism is arranged on the welding table. Two columns are arranged on the base behind the welding table. The upper ends of the two columns are connected with a cross plate. A guiding strip is arranged on the cross plate. A moving seat is slidably arranged on the guiding strip. A first motor is arranged on the moving seat. A driving gear is arranged at the bottom end of the output shaft of the first motor. A rack meshing with the driving gear is arranged on one side of the cross plate. An installation column is arranged on the moving seat. A welding assembly is arranged on the installation column. The advantages of the present invention compared with the prior art are: high welding efficiency and the ability to weld different positions of mechanical equipment.

[0004] However, it still has the following disadvantages: The device controls the up and down movement of the welding torch by controlling the telescopic movement of the first cylinder, and controls the front and back movement of the welding torch by controlling the second cylinder. However, harmful gases may be generated during the welding process, endangering the health of the staff. For this reason, we have proposed a welding device for general machining to solve this problem. Summary of the Invention

[0005] The present invention provides a welding device for general machining to solve the problems raised in the above background art.

[0006] To solve the above technical problems, the technical solution adopted by the present invention is: A welding device for general machining includes an operating table. A U-shaped bracket is fixedly connected to the top surface of the operating table. A welding device is arranged inside the U-shaped bracket. The welding device includes a power part; The power part includes a fixed box, a motor and a blade. A guide pipe is fixedly and penetratingly connected to the back of the fixed box. The bottom surface of the motor is fixedly connected to the top surface of the fixed box. The bottom end of the output shaft of the motor rotatably penetrates the top surface of the fixed box through a first bearing and extends into the inside of the fixed box. The outer surface of the blade is fixedly connected to the outer surface of the output shaft of the motor; A welding part is arranged on the right side of the fixed box; The welding part includes a mounting box, a screw rod, a mounting plate and a welding pen. The outer surface of the top end of the screw rod slidably penetrates through the bottom surface of the mounting box and extends to the inside of the mounting box. Fixed shafts are fixedly penetrated through the front and rear end faces of the screw rod. The mounting plate is rotatably sleeved on the outer surface of the fixed shaft through a second bearing. The outer surface of the bottom end of the welding pen fixedly penetrates through the top surface of the mounting plate and extends below the mounting plate.

[0007] A further improvement of the technical solution of the present invention lies in that: a telescopic tube is fixedly connected to the bottom surface of the fixed box. A connecting rod is fixedly connected to the right end surface of the telescopic tube. The right end surface of the connecting rod is fixedly connected to the left end surface of the screw rod. By setting a motor, a blade, a fixed box, a telescopic tube and a connecting rod, starting the motor, the motor drives the blade to rotate, generating negative pressure inside the fixed box, enabling gas to enter the inside of the fixed box from below the fixed box and being discharged from the rear air duct of the fixed box, preventing harmful gases generated during the welding process from diffusing in the working area and reducing the inhalation by the staff. By setting the connecting rod and the telescopic tube, the screw rod drives the connecting rod to move, and the connecting rod drives the telescopic tube to move up and down, expanding the suction range of the device, enabling harmful gases generated by welding to be sucked into the inside of the fixed box from the bottom of the telescopic tube, and reducing the absorption of harmful gases by the staff.

[0008] A further improvement of the technical solution of the present invention lies in that: a chuck is fixedly sleeved on the outer surface of the fixed shaft. A clamping block is fixedly connected to the inner wall of the mounting plate. A clamping groove is formed on the front surface of the chuck. The outer surface of the clamping block extends into the clamping groove and is clamped with the inner wall of the clamping groove. By setting the fixed shaft, the clamping block and the chuck, rotating the mounting plate, the mounting plate drives the clamping block to move, enabling the outer surface of the clamping block to be clamped with the inner walls of different clamping grooves on the front surface of the chuck, causing the mounting plate to rotate and adjusting the welding angle of the welding pen.

[0009] A further improvement of the technical solution of the present invention lies in that: a second bevel gear is threadedly sleeved on the outer surface of the screw rod. The bottom surface of the second bevel gear is rotatably connected to the inner wall of the bottom end of the mounting box through a bearing seat. A rotating shaft is arranged on the left side of the mounting box. The outer surface of the right end of the rotating shaft rotatably penetrates through the left end surface of the mounting box through a third bearing and extends to the inside of the mounting box. A first bevel gear is fixedly sleeved on the outer surface of the right end of the rotating shaft. The outer surface of the first bevel gear is meshed with the outer surface of the second bevel gear. By setting the mounting box, the screw rod, the first bevel gear, the second bevel gear and the rotating shaft, by rotating the rotating shaft, the rotating shaft drives the first bevel gear to rotate, the first bevel gear drives the second bevel gear to rotate, and the screw rod drives the welding pen to move up and down, facilitating the adjustment of the height of the welding pen.

[0010] A further improvement of the technical solution of the present invention lies in that: a first limiting groove is provided on the top surface of the screw rod, a limiting rod is fixedly connected to the inner wall of the top end of the installation box, the cross section of the limiting rod is square, and the outer surface of the bottom end of the limiting rod extends into the first limiting groove and is slidably connected to the inner wall of the first limiting groove. By providing the limiting rod, the screw rod is limited by the limiting rod to prevent the screw rod from rotating with the second bevel gear, so that the second bevel gear drives the screw rod to move up and down.

[0011] A further improvement of the technical solution of the present invention lies in that: a fourth bevel gear is fixedly sleeved on the outer surface of the bottom end of the output shaft of the motor, an installation rod is arranged inside the fixed box, two third bevel gears are fixedly sleeved on the outer surface of the installation rod, the cross section of the installation rod is hexagonal, a through hole is provided on the right end surface of the fixed box, the outer surface of the right end of the rotating shaft penetrates through the through hole, a second limiting groove is provided on the left end surface of the rotating shaft, and the outer surface of the right end of the installation rod extends into the second limiting groove and is slidably connected to the inner wall of the second limiting groove. By providing the installation rod and the second limiting groove, it is convenient for the installation rod to rotate with the rotating shaft, and at the same time, the installation rod can move horizontally along the axis of the rotating shaft.

[0012] A further improvement of the technical solution of the present invention lies in that: a groove is provided on the outer surface of the third bevel gear, a magnetic ring is fixedly connected to the inner wall of the groove, rotating plates are hinged to the left and right end surfaces of the fixed box respectively, a second spring is fixedly connected to the top surface of the rotating plate, the other end of the second spring is fixedly connected to the outer surface of the fixed box, a magnet is fixedly connected to the bottom surface of the rotating plate, and the bottom surface of the magnet repels the outer end surfaces of the two magnetic rings. By providing the first spring, the installation rod, the third bevel gear, the fourth bevel gear, the magnetic ring, the rotating plate, the magnet and the second spring, when the rotating plate is pressed down, the rotating plate drives the magnet to rotate, so that the bottom surface of the magnet faces the outer surface of the fixed box. Using the repulsive force between the magnet and the magnetic ring, the magnet pushes the magnetic ring, the magnetic ring pushes the third bevel gear and the installation rod to displace, so that the outer surface of the third bevel gear meshes with the outer surface of the fourth bevel gear, and the motor drives the rotating shaft to rotate.

[0013] A further improvement of the technical solution of the present invention lies in that: a first spring is fixedly connected to the right end surface of the installation rod, and the other end of the first spring is fixedly connected to the inner wall of the second limiting groove. By providing the first spring, the installation rod is positioned by the elastic force of the first spring, so that when the rotating plate returns to its original position, the outer surface of the third bevel gear does not contact the outer surface of the fourth bevel gear, and the screw rod remains stationary.

[0014] Due to the adoption of the above technical solution, the technical progress achieved by the present invention compared with the prior art is: 1. The present invention provides a welding device for general mechanical processing. By setting a motor, blades, a fixed box, a telescopic tube, and a connecting rod, when the motor is started, the motor drives the blades to rotate, generating negative pressure inside the fixed box, causing gas to enter the fixed box from below and be discharged from the air duct at the rear of the fixed box, preventing harmful gases generated during the welding process from diffusing in the working area and reducing inhalation by the staff. 2. The present invention provides a welding device for general mechanical processing. By setting an installation box, a screw rod, a first bevel gear, a second bevel gear, an installation plate, a limiting rod, and a rotating shaft, by rotating the rotating shaft, the rotating shaft drives the first bevel gear to rotate, and the first bevel gear drives the second bevel gear to rotate. The limiting rod is used to limit the screw rod to prevent the screw rod from rotating with the second bevel gear, enabling the second bevel gear to drive the screw rod to move up and down, and the screw rod drives the welding pen to move up and down, facilitating the adjustment of the height of the welding pen. 3. The present invention provides a welding device for general mechanical processing. By setting a first spring, an installation rod, a third bevel gear, a fourth bevel gear, a magnetic ring, a rotating plate, a magnet, and a second spring, when the rotating plate is pressed down, the rotating plate drives the magnet to rotate, making the bottom surface of the magnet face the outer surface of the fixed box. Using the repulsive force between the magnet and the magnetic ring, the magnet pushes the magnetic ring, causing the magnetic ring to push the third bevel gear and the installation rod to displace, enabling the outer surface of the third bevel gear to engage with the outer surface of the fourth bevel gear. The motor transmits power to the installation plate through the third bevel gear and the fourth bevel gear, and the installation rod drives the rotating shaft to rotate, causing the screw rod and the welding pen to move. When the rotating plate is released, the second spring pulls the rotating plate and the magnet back to their original positions. By rotating another rotating plate, the screw rod and the welding pen move in the opposite direction. Using the elastic force of the first spring to position the installation rod, when the rotating plate returns to its original position, the outer surface of the third bevel gear does not contact the outer surface of the fourth bevel gear, keeping the screw rod stationary. 4. The present invention provides a welding device for general mechanical processing. By setting a fixed shaft, a clamping block, and a chuck, when the installation plate is rotated, the installation plate drives the clamping block to move, causing the outer surface of the clamping block to be clamped with the inner wall of different card slots on the front surface of the chuck, enabling the installation plate to rotate and adjust the welding angle of the welding pen. Using the clamping of the outer surface of the clamping block with the inner wall of the card slot on the front surface of the chuck, the installation plate is kept stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a sectional view of the three-dimensional structure of the welding device of the present invention; Figure 2 is a schematic diagram of the three-dimensional structure of the present invention; Figure 3 is a partial sectional view of the three-dimensional structure of the welding device of the present invention; Figure 4 is a sectional view of the three-dimensional structure of the installation plate of the present invention; Figure 5 is Figure 3 an enlarged view of the structure at B in Figure 6 is Figure 3 the enlarged view of the structure at position C in Figure 7 is Figure 3 the enlarged view of the structure at position A in

[0016] In the figure: 1, operating table; 3, welding device; 31, welding part; 32, power part; 3101, mounting box; 3102, screw rod; 3103, first bevel gear; 3104, second bevel gear; 3105, mounting plate; 3106, welding pen; 3107, chuck; 3108, limiting rod; 3110, fixed shaft; 3111, clamping block; 3113, first spring; 3114, mounting rod; 3115, rotating shaft; 3116, third bevel gear; 3117, fourth bevel gear; 3118, magnetic ring; 3119, rotating plate; 3120, magnet; 3121, second spring; 3201, motor; 3203, blade; 3204, fixed box; 3205, telescopic tube; 3206, connecting rod; 4, U-shaped bracket. Specific implementation mode

[0017] The following further describes the present invention in detail with reference to embodiments: Embodiment 1

[0018] As Figure 1-2 shown, the present invention provides a welding device for general mechanical processing, including an operating table 1, a U-shaped bracket 4 fixedly connected to the top surface of the operating table 1, and a welding device 3 arranged inside the U-shaped bracket 4. The welding device 3 includes a power part 32; The power part 32 includes a fixed box 3204, a motor 3201, and a blade 3203. The back of the fixed box 3204 is fixedly and penetratingly connected with a gas guide pipe. The bottom surface of the motor 3201 is fixedly connected to the top surface of the fixed box 3204. The bottom end outer surface of the output shaft of the motor 3201 rotates through the top surface of the fixed box 3204 through a first bearing and extends to the inside of the fixed box 3204. The outer surface of the blade 3203 is fixedly connected to the outer surface of the output shaft of the motor 3201. The bottom surface of the fixed box 3204 is fixedly connected with a telescopic tube 3205, and the right end surface of the telescopic tube 3205 is fixedly connected with a connecting rod 3206. By setting the motor 3201, the blade 3203, the fixed box 3204, the telescopic tube 3205, and the connecting rod 3206, when the motor 3201 is started, the motor 3201 drives the blade 3203 to rotate, generating negative pressure inside the fixed box 3204, enabling gas to enter the inside of the fixed box 3204 from below the fixed box 3204 and being discharged from the gas guide pipe behind the fixed box 3204, preventing the harmful gas generated during the welding process from diffusing in the working area and reducing the inhalation by the staff; Embodiment 2

[0019] As Figure 1-4As shown, on the basis of the first embodiment, a welding part 31 is arranged on the right side of the fixing box 3204; The welding part 31 includes a mounting box 3101, a screw rod 3102, a mounting plate 3105 and a welding pen 3106. The right end face of the connecting rod 3206 is fixedly connected to the left end face of the screw rod 3102. The outer surface of the top end of the screw rod 3102 slidably penetrates through the bottom surface of the mounting box 3101 and extends to the inside of the mounting box 3101. Fixed shafts 3110 are fixedly arranged through the front and rear end faces of the screw rod 3102. The mounting plate 3105 is rotatably sleeved on the outer surface of the fixed shaft 3110 through a second bearing; The outer surface of the bottom end of the welding pen 3106 fixedly penetrates through the top surface of the mounting plate 3105 and extends below the mounting plate 3105. A chuck 3107 is fixedly sleeved on the outer surface of the fixed shaft 3110. A clamping block 3111 is fixedly connected to the inner wall of the mounting plate 3105. A clamping groove is formed on the front surface of the chuck 3107. The outer surface of the clamping block 3111 extends into the clamping groove and is clamped with the inner wall of the clamping groove. By arranging the fixed shaft 3110, the clamping block 3111 and the chuck 3107, when the mounting plate 3105 is rotated, the mounting plate 3105 drives the clamping block 3111 to move, so that the outer surface of the clamping block 3111 is clamped with the inner walls of different clamping grooves on the front surface of the chuck 3107, causing the mounting plate 3105 to rotate and adjusting the welding angle of the welding pen 3106. By using the clamping of the outer surface of the clamping block 3111 with the inner wall of the clamping groove on the front surface of the chuck 3107, the mounting plate 3105 is kept stable; Embodiment Three

[0020] As Figure 1-7As shown in the figure, on the basis of the second embodiment, a first limiting groove is formed on the top surface of the screw rod 3102. The inner wall of the top end of the mounting box 3101 is fixedly connected with a limiting rod 3108. The cross section of the limiting rod 3108 is square. The outer surface of the bottom end of the limiting rod 3108 extends into the first limiting groove and is slidably connected with the inner wall of the first limiting groove. A second bevel gear 3104 is sleeved on the outer surface of the screw rod 3102 in a threaded manner. The bottom surface of the second bevel gear 3104 is rotatably connected with the inner wall of the bottom end of the mounting box 3101 through a bearing seat. A rotating shaft 3115 is arranged on the left side of the mounting box 3101. The outer surface of the right end of the rotating shaft 3115 rotatably penetrates through the left end surface of the mounting box 3101 through a third bearing and extends into the mounting box 3101. A first bevel gear 3103 is fixedly sleeved on the outer surface of the right end of the rotating shaft 3115. The outer surface of the first bevel gear 3103 is meshed with the outer surface of the second bevel gear 3104. By arranging the mounting box 3101, the screw rod 3102, the first bevel gear 3103, the second bevel gear 3104, the mounting plate 3105, the limiting rod 3108 and the rotating shaft 3115, by rotating the rotating shaft 3115, the rotating shaft 3115 drives the first bevel gear 3103 to rotate. The first bevel gear 3103 drives the second bevel gear 3104 to rotate. The limiting rod 3108 is used to limit the screw rod 3102 to prevent the screw rod 3102 from rotating with the second bevel gear 3104, so that the second bevel gear 3104 drives the screw rod 3102 to move up and down. The screw rod 3102 drives the soldering pen 3106 to move up and down, which is convenient for adjusting the height of the soldering pen; A fourth bevel gear 3117 is fixedly sleeved on the outer surface of the bottom end of the output shaft of the motor 3201. A mounting rod 3114 is arranged inside the fixed box 3204. Two third bevel gears 3116 are fixedly sleeved on the outer surface of the mounting rod 3114. The cross section of the mounting rod 3114 is hexagonal. A through hole is formed in the right end surface of the fixed box 3204. The outer surface of the right end of the rotating shaft 3115 penetrates through the through hole. A second limiting groove is formed in the left end surface of the rotating shaft 3115. The outer surface of the right end of the mounting rod 3114 extends into the second limiting groove and is slidably connected with the inner wall of the second limiting groove. A groove is formed in the outer surface of the third bevel gear 3116, and a magnetic ring 3118 is fixedly connected to the inner wall of the groove. Rotating plates 3119 are hinged to the left and right end surfaces of the fixed box 3204 respectively; The top surface of the rotating plate 3119 is fixedly connected to the second spring 3121, and the other end of the second spring 3121 is fixedly connected to the outer surface of the fixed box 3204. The bottom surface of the rotating plate 3119 is fixedly connected to a magnet 3120. The bottom surface of the magnet 3120 repels the outer end faces of the two magnetic rings 3118. The right end face of the mounting rod 3114 is fixedly connected to the first spring 3113, and the other end of the first spring 3113 is fixedly connected to the inner wall of the second limiting groove. By providing the first spring 3113, the mounting rod 3114, the third bevel gear 3116, the fourth bevel gear 3117, the magnetic ring 3118, the rotating plate 3119, the magnet 3120 and the second spring 3121, when pressing down the rotating plate 3119, the rotating plate 3119 drives the magnet 3120 to rotate, so that the bottom surface of the magnet 3120 faces the outer surface of the fixed box 3204. By using the repulsive force between the magnet 3120 and the magnetic ring 3118, the magnet 3120 pushes the magnetic ring 3118, and the magnetic ring 3118 pushes the third bevel gear 3116 and the mounting rod 3114 to displace, so that the outer surface of the third bevel gear 3116 is meshed with the outer surface of the fourth bevel gear 3117. The motor 3101 transmits power to the mounting plate 3114 through the third bevel gear 3116 and the fourth bevel gear 3117. The mounting rod 3114 drives the rotating shaft 3115 to rotate, so that the screw rod 3108 and the welding pen 3106 move. When releasing the rotating plate, the second spring 3121 pulls the rotating plate 3119 and the magnet 3120 to reset. Rotating another rotating plate 3119 makes the screw rod 3108 and the welding pen 3106 move in the opposite direction. By using the elastic force of the first spring 3113 to position the mounting rod, when the rotating plate resets, the outer surface of the third bevel gear 3116 is not in contact with the outer surface of the fourth bevel gear 3117, so that the screw rod 3108 remains stationary.

[0021] Next, the working principle of the welding device for general mechanical processing will be specifically described.

[0022] During use, start the motor 3201. The motor 3201 drives the blade 3203 to rotate, so that the gas enters the inside of the fixed box 3204 from below the fixed box. Press down a rotating plate 3119. The rotating plate 3119 drives the magnet 3120 to rotate, so that the bottom surface of the magnet 3120 faces the outer surface of the fixed box 3204. The magnet 3120 pushes the magnetic ring 3118, and the magnetic ring 3118 pushes the third bevel gear 3116 and the mounting rod 3114 to displace, so that the outer surface of the third bevel gear 3116 is meshed with the outer surface of the fourth bevel gear 3117. The motor 3201 drives the mounting rod 3114 to rotate through the third bevel gear 3116 and the fourth bevel gear 3117. The mounting rod 3114 drives the rotating shaft 3115 to rotate, so that the screw rod 3102 and the welding pen 3106 move; The present invention provides a welding device for general mechanical processing. By setting a fixed shaft, a clamping block and a chuck, rotating the mounting plate, the mounting plate drives the clamping block to move, so that the outer surface of the clamping block is clamped with the inner wall of different clamping grooves on the front surface of the chuck, causing the mounting plate to rotate and adjusting the welding angle of the welding pen. By using the clamping of the outer surface of the clamping block with the inner wall of the clamping groove on the front surface of the chuck, the mounting plate is kept stable.

[0023] The above has generally described the present invention in detail. However, based on the present invention, some modifications or improvements can be made, which are obvious to those of ordinary skill in the technical field. Therefore, the modifications or improvements made without departing from the spirit and idea of the present invention are all within the protection scope of the present invention.

Claims

1. A welding device for general machining, comprising an operating table (1), characterized in that: The top surface of the operation table (1) is fixedly connected with a U-shaped bracket (4), and a welding device (3) is arranged inside the U-shaped bracket (4). The welding device (3) includes a power unit (32). The power unit (32) includes a fixed box (3204), a motor (3201), and a blade (3203). A guide air pipe is fixedly and penetratingly connected to the back surface of the fixed box (3204). The bottom surface of the motor (3201) is fixedly connected to the top surface of the fixed box (3204). The bottom end outer surface of the output shaft of the motor (3201) rotatably penetrates through the top surface of the fixed box (3204) through a first bearing and extends to the inside of the fixed box (3204). The outer surface of the blade (3203) is fixedly connected to the outer surface of the output shaft of the motor (3201). A welding part (31) is arranged on the right side of the fixed box (3204). The welding part (31) includes an installation box (3101), a screw rod (3102), an installation plate (3105), and a welding pen (3106). The top end outer surface of the screw rod (3102) slidably penetrates through the bottom surface of the installation box (3101) and extends to the inside of the installation box (3101). Fixed shafts (3110) are fixedly penetrated through the front and rear end faces of the screw rod (3102). The installation plate (3105) is rotatably sleeved on the outer surface of the fixed shaft (3110) through a second bearing. The bottom end outer surface of the welding pen (3106) fixedly penetrates through the top surface of the installation plate (3105) and extends below the installation plate (3105).

2. The welding device for general machining according to claim 1, characterized in that: The bottom surface of the fixed box (3204) is fixedly connected with a telescopic pipe (3205). The right end surface of the telescopic pipe (3205) is fixedly connected with a connecting rod (3206). The right end surface of the connecting rod (3206) is fixedly connected with the left end surface of the screw rod (3102).

3. A welding device for general mechanical processing according to claim 1, characterized in that: A chuck (3107) is fixedly sleeved on the outer surface of the fixed shaft (3110). A clamping block (3111) is fixedly connected to the inner wall of the installation plate (3105). A clamping groove is formed on the front surface of the chuck (3107). The outer surface of the clamping block (3111) extends into the clamping groove and is clamped with the inner wall of the clamping groove.

4. A welding device for general mechanical processing according to claim 1, characterized in that: A second bevel gear (3104) is threadedly sleeved on the outer surface of the screw rod (3102). The bottom surface of the second bevel gear (3104) is rotatably connected to the inner wall of the bottom end of the installation box (3101) through a bearing seat. A rotating shaft (3115) is arranged on the left side of the installation box (3101). The right end outer surface of the rotating shaft (3115) rotatably penetrates through the left end surface of the installation box (3101) through a third bearing and extends to the inside of the installation box (3101). A first bevel gear (3103) is fixedly sleeved on the right end outer surface of the rotating shaft (3115). The outer surface of the first bevel gear (3103) is meshed with the outer surface of the second bevel gear (3104).

5. A welding device for general mechanical processing according to claim 1, characterized in that: A first limiting groove is formed on the top surface of the screw rod (3102). A limiting rod (3108) is fixedly connected to the inner wall of the top end of the installation box (3101). The cross section of the limiting rod (3108) is square. The bottom end outer surface of the limiting rod (3108) extends into the first limiting groove and is slidably connected with the inner wall of the first limiting groove.

6. The welding device for general mechanical processing according to claim 4, wherein: A fourth bevel gear (3117) is fixedly sleeved on the outer surface of the bottom end of the output shaft of the motor (3201). An installation rod (3114) is arranged inside the fixed box (3204). Two third bevel gears (3116) are fixedly sleeved on the outer surface of the installation rod (3114). The cross section of the installation rod (3114) is hexagonal. A through hole is formed in the right end face of the fixed box (3204). The right end outer surface of the rotating shaft (3115) penetrates through the through hole. A second limiting groove is formed in the left end face of the rotating shaft (3115). The right end outer surface of the installation rod (3114) extends into the second limiting groove and is slidably connected with the inner wall of the second limiting groove.

7. A welding device for general machining according to claim 6, characterized in that: A groove is formed in the outer surface of the third bevel gear (3116), and a magnetic ring (3118) is fixedly connected to the inner wall of the groove. Rotating plates (3119) are hinged to the left and right end faces of the fixed box (3204). A second spring (3121) is fixedly connected to the top surface of the rotating plate (3119). The other end of the second spring (3121) is fixedly connected to the outer surface of the fixed box (3204). A magnet (3120) is fixedly connected to the bottom surface of the rotating plate (3119). The bottom surface of the magnet (3120) repels the outer end faces of the two magnetic rings (3118).

8. A welding device for general mechanical processing according to claim 6, characterized in that: A first spring (3113) is fixedly connected to the right end face of the installation rod (3114). The other end of the first spring (3113) is fixedly connected to the inner wall of the second limiting groove.

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