A mechanical valve body assembly pulse laser welding apparatus for petroleum equipment

Abstract

The present application relates to the technical fields of pulse laser welding, in particular to a kind of pulse laser welding equipment for mechanical valve body assembly of petroleum equipment;Including machine body;The workbench is rotatably installed on the upper end of the machine body;The mounting bracket is fixedly installed on the upper end of the machine body;The present application is polished by setting polishing rod;Make polishing rod before laser welding the site to be welded is polished, removes the oxidation layer of the area to be welded, so as to avoid the link such as transfer, temporary storage, not only shorten the production cycle, also avoid the generation of secondary oxidation layer, so as to laser emitter directly carries out welding to polishing area, to avoid laser energy absorption rate drop when welding, so that the actual effect of pulse laser welding is effectively improved, in addition, polishing rod can also directly polish the laser welding site in high temperature state after welding, not only beneficial to remove impurities, also help to reduce polishing difficulty, improve the overall welding efficiency of valve body assembly.

Description

Technical Field

[0001] This invention relates to the field of pulsed laser welding technology, specifically to a pulsed laser welding device for mechanical valve body components used in petroleum equipment. Background Technology

[0002] Mechanical valve body assemblies for petroleum equipment typically refer to the core valve components used in various equipment during petroleum extraction, transportation, and refining processes. They play a crucial role in controlling, guiding, regulating, and cutting off the flow of fluids (such as crude oil, natural gas, and water) in the petroleum industry.

[0003] Mechanical valve body assemblies include multiple components such as valve body, valve core, valve seat, and seals. Their processing quality directly determines the valve's sealing performance, corrosion resistance, pressure resistance, and service life. Welded connections have advantages such as good sealing performance, high strength, and low leakage. Welding of valve body assemblies often adopts pulsed laser welding because traditional welding processes are prone to problems such as incomplete welds, shallow weld pools, or discontinuous welds. Pulsed laser welding, by precisely controlling parameters such as pulse energy and pulse width, and is free of pores and has strong sealing performance, can effectively meet the high pressure resistance and sealing requirements of such valve cores.

[0004] Valve components are mostly made of metal (such as stainless steel, copper alloy, etc.), so an oxide layer is easily formed on the surface of valve components during processing or storage. The presence of the oxide layer not only increases the laser reflectivity, but also makes it easy for the gases generated by the decomposition under high temperature welding to form porosity defects. Therefore, before pulsed laser welding, the welding area needs to be pre-treated (such as manual grinding) to remove the oxide layer. For large batches of workpieces, they need to go through transfer and temporary storage, which not only prolongs the production cycle, but also, due to the high surface activity of metal, forms a secondary oxide layer when in contact with oxygen and water vapor in the air, which makes the laser energy absorption rate decrease again during welding, ultimately affecting the actual effect of pulsed laser welding.

[0005] In view of this, in order to overcome the above-mentioned technical problems, the present invention proposes a pulsed laser welding device for mechanical valve body components of petroleum equipment, which solves the above-mentioned technical problems. Summary of the Invention

[0006] To overcome the shortcomings of existing technologies, this invention proposes a pulsed laser welding device for mechanical valve body components in petroleum equipment. This invention incorporates a grinding rod that grinds the area to be welded before laser welding, removing the oxide layer. This eliminates the need for transfer and temporary storage, shortening the production cycle and preventing the formation of secondary oxide layers. This allows the laser emitter to directly weld the ground area, preventing a decrease in laser energy absorption during welding and effectively improving the actual welding effect of the pulsed laser. Furthermore, after welding, the grinding rod can directly polish the laser-welded area at high temperatures, facilitating impurity removal, reducing grinding difficulty, and improving the overall welding efficiency of the valve body component.

[0007] The technical solution adopted by this invention to solve its technical problem is as follows: A pulsed laser welding device for mechanical valve body components of petroleum equipment, comprising a machine body; a worktable rotatably mounted on the upper end of the machine body; a mounting frame fixedly mounted on the upper end of the machine body; a laser emitter installed between the mounting frame and the machine body; a hydraulic push rod fixedly mounted on the lower end of the mounting frame; a mounting plate fixedly mounted on the end of the hydraulic push rod away from the mounting frame; mounting grooves are formed on both sides of the mounting plate; the laser emitter is rotatably mounted in the mounting groove on one side of the mounting plate; a servo motor is rotatably mounted in the mounting groove on the mounting plate away from the laser emitter; a grinding rod is installed at the output end of the servo motor; a circular groove is formed on the upper end of the worktable; a rotating plate is rotatably connected to the circular groove; a drive motor is installed inside the machine body; the drive motor drives the worktable to rotate; the drive motor and the rotating plate are connected through a drive module; a limit unit is installed on the upper end of the rotating plate; the limit unit is used to limit the valve body component.

[0008] Preferably, an eccentric column is rotatably connected within the mounting groove; a rocker arm is rotatably connected to one side of the mounting plate; and the rocker arm is fixedly connected to the eccentric column.

[0009] Preferably, the eccentric column has a protrusion fixedly connected to its surface; a hinge plate is rotatably connected in the mounting groove; the laser emitter and the servo motor are both fixedly connected to the hinge plate; a rubber plate is fixedly connected to the surface of the hinge plate; the rubber plate is made of silicone rubber material.

[0010] Preferably, the drive module includes a bevel gear ring and a bevel gear shaft; the bevel gear shaft is fixedly connected to the rotating plate; the bevel gear ring is fixedly connected to the worktable; a cavity is provided inside the machine body; the drive motor is installed in the cavity; a groove is provided at the output end of the drive motor; a double-headed bevel gear is slidably and sealed in the groove; the double-headed bevel gear is connected to the bottom of the groove through a connecting spring; an electromagnetic plate is embedded in the bottom of the groove.

[0011] Preferably, the output end of the servo motor has a square slot; the grinding rod is slidably connected in the square slot; the grinding rod is connected to the bottom of the square slot by a fixed spring; and an electromagnetic plate is embedded in the bottom of the square slot.

[0012] Preferably, the limiting unit includes a limiting plate; a sliding groove is provided on one side of the rotating plate; the limiting plate is installed in the sliding groove; a strip groove is provided at the upper end of the limiting plate; two abutting rods are slidably connected in the strip groove, the two abutting rods being respectively configured as I-type and L-type; the I-type abutting rod is connected to the groove wall of the strip groove by a first spring; the L-type abutting rod is connected to the limiting plate by a second spring; an electromagnetic ring is fixedly connected to the lower end of the L-type abutting rod; an electro-hydraulic push rod connected to the machine body is provided above the worktable; a magnet is embedded on the side of the electro-hydraulic push rod near the limiting plate.

[0013] Preferably, a rubber block is installed at the upper end of both of the clamping rods; a groove is provided on one side of the rubber block above the L-shaped clamping rod; a locking block that mates with the groove is fixedly connected to one side of the rubber block above the I-shaped clamping rod; the rubber block is made of silicone rubber; and an annular groove is provided on the surface of the I-shaped clamping rod.

[0014] Preferably, a slide plate is slidably connected within the slide groove; the limiting plate is in slidable contact with the slide plate; a screw is rotatably connected to the upper end of the slide plate; and the screw is helically connected to the limiting plate.

[0015] The beneficial effects of this invention are as follows:

[0016] This invention utilizes a grinding rod to grind the area to be welded before laser welding, removing the oxide layer and eliminating the need for transfer or temporary storage. This not only shortens the production cycle but also prevents the formation of a secondary oxide layer, allowing the laser emitter to directly weld the ground area. This also prevents a decrease in laser energy absorption during welding, effectively improving the actual effect of pulsed laser welding. Furthermore, after welding, the grinding rod can directly polish the laser-welded area at high temperatures, which not only helps remove impurities but also reduces grinding difficulty and improves the overall welding efficiency of the valve body assembly.

[0017] This invention utilizes an eccentric column. When the tilt angle of the laser emitter needs adjustment, the user simply rotates a rocker arm, causing the eccentric column to rotate away from the hinge plate. This creates a gap between the hinge plate and the eccentric column. The user then manually rotates the hinge plate, causing the connected laser emitter to rotate, thus adjusting the tilt angle. After adjusting the laser emitter's tilt angle, the user rotates the rocker arm in the opposite direction, causing the eccentric column to rotate closer to the hinge plate. The rocker arm presses against the hinge plate, ensuring the tilted laser emitter and grinding rod remain stable, thereby guaranteeing stable laser welding. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is a perspective view of the present invention;

[0020] Figure 2 This is a partial cross-sectional view of the workbench used in this invention;

[0021] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0022] Figure 4 yes Figure 2 Enlarged view of point B in the middle;

[0023] Figure 5 yes Figure 2 Enlarged view of point C in the middle;

[0024] Figure 6 This is a partial cross-sectional view of the mounting plate used in this invention;

[0025] Figure 7 yes Figure 6 Enlarged view of point D in the middle;

[0026] In the diagram: Body 1, Worktable 11, Bevel Gear Ring 111, Cavity 112, Mounting Bracket 12, Laser Emitter 121, Hydraulic Push Rod 122, Mounting Plate 123, Mounting Slot 124, Eccentric Column 125, Rocker Arm 126, Protrusion 127, Hinge Plate 128, Rubber Plate 129, Servo Motor 13, Grinding Rod 131, Square Slot 132, Fixing Spring 133, Electromagnetic Plate 134, Circular Slot 14, Rotating Plate 141 142 bevel gear shaft, 15 drive motor, 151 groove, 152 double-headed bevel gear, 153 connecting spring, 154 electromagnetic plate, 16 limiting plate, 161 sliding groove, 162 strip groove, 163 clamping rod, 164 spring No. 1, 165 spring No. 2, 166 electromagnetic ring, 167 annular groove, 168 sliding plate, 169 screw, 17 electro-hydraulic push rod, 171 magnet, 18 rubber block, 181 slot, 182 locking block. Detailed Implementation

[0027] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0028] like Figures 1 to 7 As shown, the pulsed laser welding equipment for mechanical valve body components of petroleum equipment according to the present invention includes a body 1; a worktable 11 is rotatably mounted on the upper end of the body 1; a mounting frame 12 is fixedly mounted on the upper end of the body 1; a laser emitter 121 is installed between the mounting frame 12 and the body 1; a hydraulic push rod 122 is fixedly mounted on the lower end of the mounting frame 12; a mounting plate 123 is fixedly mounted on the end of the hydraulic push rod 122 away from the mounting frame 12; mounting grooves 124 are formed on both sides of the mounting plate 123; the laser emitter 121 is rotatably mounted on a mounting plate 123 on one side of the mounting plate 123. A servo motor 13 is rotatably mounted in the mounting slot 124 of the mounting plate 123 away from the laser emitter 121; a grinding rod 131 is mounted on the output end of the servo motor 13; a circular slot 14 is opened at the upper end of the worktable 11; a rotating plate 141 is rotatably connected in the circular slot 14; a drive motor 15 is installed inside the machine body 1; the drive motor 15 is used to drive the worktable 11 to rotate; the drive motor 15 and the rotating plate 141 are connected through a drive module; a limit unit is installed at the upper end of the rotating plate 141; the limit unit is used to limit the valve body assembly.

[0029] In one embodiment of the present invention, an eccentric column 125 is rotatably connected in the mounting groove 124; a rocker arm 126 is rotatably connected to one side of the mounting plate 123; and the rocker arm 126 is fixedly connected to the eccentric column 125.

[0030] In one embodiment of the present invention, a protrusion 127 is fixedly connected to the surface of the eccentric column 125; a hinge plate 128 is rotatably connected in the mounting groove 124; the laser emitter 121 and the servo motor 13 are both fixedly connected to the hinge plate 128; a rubber plate 129 is fixedly connected to the surface of the hinge plate 128; the rubber plate 129 is made of silicone rubber material.

[0031] In one embodiment of the present invention, the drive module includes a bevel gear ring 111 and a bevel gear shaft 142; the bevel gear shaft 142 is fixedly connected to the rotating plate 141; the bevel gear ring 111 is fixedly connected to the worktable 11; a cavity 112 is provided inside the machine body 1; the drive motor 15 is installed in the cavity 112; a groove 151 is provided at the output end of the drive motor 15; a double-headed bevel gear 152 is slidably and sealed in the groove 151; the double-headed bevel gear 152 is connected to the bottom of the groove 151 through a connecting spring 153; an electromagnetic plate 154 is embedded in the bottom of the groove 151.

[0032] In one embodiment of the present invention, the output end of the servo motor 13 is provided with a square groove 132; the grinding rod 131 is slidably connected in the square groove 132; the grinding rod 131 and the bottom of the square groove 132 are connected by a fixing spring 133; an electromagnetic plate 134 is embedded in the bottom of the square groove 132.

[0033] During operation, valve components are mostly made of metal (such as stainless steel, copper alloy, etc.), so an oxide layer is easily formed on the surface of the valve components during processing or storage. The presence of the oxide layer not only increases the laser reflectivity, but also makes it easy for the gases generated by the decomposition under high temperature welding to form porosity defects. Therefore, before pulsed laser welding, the welding area needs to be pre-treated (such as manual grinding) to remove the oxide layer. For large batches of workpieces, they need to go through transfer and temporary storage, which not only prolongs the production cycle, but also, due to the high surface activity of metal, forms a secondary oxide layer when in contact with oxygen and water vapor in the air, which makes the laser energy absorption rate decrease again during welding, ultimately affecting the actual effect of pulsed laser welding.

[0034] To address this, the present invention incorporates a grinding rod 131. This grinding rod 131 grinds the area to be welded before laser welding, removing the oxide layer from the area to be welded. This eliminates the need for transfer and temporary storage, shortening the production cycle and preventing the formation of a secondary oxide layer. This allows the laser emitter 121 to directly weld the ground area, preventing a decrease in laser energy absorption during welding and effectively improving the actual effect of pulsed laser welding. Furthermore, after welding, the grinding rod 131 can directly grind and polish the laser-welded area at high temperatures, which not only helps remove impurities but also reduces grinding difficulty and improves the overall welding efficiency of the valve body assembly.

[0035] In the initial state, if the user welds the valve body and connecting pipe (welding part), the user places the valve body on the upper end of the rotating plate 141; places the connecting pipe on the valve body, and then uses the limiting unit to fix the valve body to the welding part; then the user controls the electromagnetic plate 154 to be energized, so that the electromagnetic plate 154 can attract the double-headed bevel gear 152 to squeeze the connecting spring 153 into the groove 151; so that the double-headed bevel gear 152 can move towards the bevel gear ring 111 until the double-headed bevel gear 152 meshes with the gear ring. At this time, the user controls the drive motor 15 to run, so that the drive motor 15 can drive the double-headed bevel gear 152 to rotate, so that the double-headed bevel gear 152 can drive the bevel gear ring 111 to rotate, so that the bevel gear ring 111 drives the worktable 11 fixed to rotate synchronously, so that the worktable 11 can drive the upper rotating plate 141 to rotate, so that the rotating plate 141 drives the valve body placed on the upper end to rotate 180°, so that the rotating plate 141 is directly below the mounting plate 123.

[0036] When the valve body to be welded is directly below the hydraulic push rod 122, the hydraulic push rod 122 is lowered, causing the mounting plate 123 to descend. This causes the mounting plate 123 to simultaneously lower the laser emitter 121 and the grinding rod 131. At this time, the electromagnetic plate 134 is energized, attracting the grinding rod 131 and squeezing the fixing spring 133 into the square groove 132. As the hydraulic push rod 122 pushes the mounting plate 123, it lowers the grinding rod 131 until it is directly aligned with the area to be welded on the valve body. At this point, the hydraulic push rod 122 is stopped, and the electromagnetic plate 134 is de-energized. The grinding rod 131, under the restoring force of the fixing spring 133, extends out of the square groove 132 and contacts the area to be welded. The servo motor is then activated. When the machine 13 is running, the servo motor 13 drives the grinding rod 131 to rotate, so that the grinding rod 131 grinds the area to be welded. At this time, the control electromagnetic plate 154 is de-energized, so that the double-headed bevel gear 152 extends out of the groove 151 and contacts the bevel gear shaft 142 under the push of the restoring force of the connecting spring 153. At this time, the double-headed bevel gear 152 separates from the bevel gear ring 111. The control drive motor 15 is running, so that the drive motor 15 can drive the bevel gear shaft 142 to rotate through the double-headed bevel gear 152, so that the bevel gear shaft 142 can drive the rotating plate 141 fixed thereto to rotate synchronously; so that the rotating plate 141 drives the valve body to rotate synchronously, so that the grinding rod 131 grinds the selected valve body, so that the grinding rod 131 can grind around the gap to be welded.

[0037] Since pulsed laser heads are equipped with gas delivery systems, such as gas pipes, the direction of the gas pipes is controlled to be consistent with the direction of the pulsed laser head. Therefore, after the grinding rod 131 completes the pre-grinding, the external gas pump is controlled to deliver gas through the gas pipes, so that the gas ejected from the gas pipes can be blown toward the area of ​​the valve body to be welded. This allows the gas to remove the oxide layer impurities that have been ground off in the area of ​​the valve body to be welded, thereby improving the cleanliness of the area of ​​the valve body to be welded and preventing the oxide layer impurities that have been ground off from decomposing into gas and forming pore defects during the welding process. Then, the laser emitter 121 is controlled to emit pulsed lasers toward the area of ​​the valve body to be welded for laser welding. At this time, the drive motor 15 runs and drives the rotating plate 141 to rotate the valve body for welding.

[0038] After welding is completed, nitrogen gas at room temperature is injected through the control pipe, which can initially cool the area of ​​the valve body to be welded, allowing the molten metal residue in the area to be welded to solidify quickly. Then, the grinding rod 131 is controlled to perform secondary grinding on the area to be welded, so that the solidified metal residue can be quickly ground off before oxidation, preventing the solidified metal residue from increasing its hardness due to oxidation, reducing the difficulty of grinding the solidified metal residue, accelerating the grinding and removal rate of the solidified metal residue, and at the same time, reducing the wear of the grinding rod 131 and improving the service life of the grinding rod 131.

[0039] The purpose of the eccentric column 125 is to allow the user to rotate the laser emitter 121 and servo motor 13 to adjust the tilt angle of the laser emitter 121 and the grinding rod 131. This is because different valve bodies have different shapes, and the welding area of ​​some valve bodies is blocked by their flanges, which prevents the laser emitter 121 from perpendicularly illuminating the weld. Therefore, adjusting the tilt angle of the laser emitter 121 can obtain a better incident path. Similarly, adjusting the tilt angle of the grinding rod 131 can allow the grinding rod 131 to obtain a better welding path. When it is necessary to adjust the tilt angle of the laser emitter 121, the user only needs to rotate the rocker arm 125. 26. This causes the rocker arm 126 to rotate the eccentric column 125, causing the eccentric column 125 to rotate away from the hinge plate 128, creating a gap between the hinge plate 128 and the eccentric column 125. At this time, the user only needs to manually rotate the hinge plate 128, so that the hinge plate 128 can drive the laser emitter 121 connected to it to rotate, thereby adjusting the tilt angle of the laser emitter 121. After adjusting the tilt angle of the laser emitter 121, the user only needs to rotate the rocker arm 126 in the opposite direction, causing the rocker arm 126 to rotate the eccentric column 125 towards the hinge plate 128, so that the rocker arm 126 presses against the hinge plate 128.

[0040] By fixing a rubber plate 129 to the surface of the hinge plate 128, the rubber plate 129 can increase the friction between the hinge plate 128 and the eccentric column 125. Similarly, by fixing a protrusion 127 to the surface of the eccentric column 125, the protrusion 127 can increase the surface roughness of the eccentric column 125, thereby increasing the friction between the eccentric column 125 and the hinge plate 128, thus improving the clamping effect of the eccentric column 125 on the hinge plate 128, and enabling the tilted laser emitter 121 and the grinding rod 131 to maintain a stable state.

[0041] In one embodiment of the present invention, the limiting unit includes a limiting plate 16; a sliding groove 161 is provided on one side of the rotating plate 141; the limiting plate 16 is installed in the sliding groove 161; a strip groove 162 is provided at the upper end of the limiting plate 16; two abutting rods 163 are slidably connected in the strip groove 162, and the two abutting rods 163 are respectively configured as I-type and L-type; the I-type abutting rod 163 is connected to the groove wall of the strip groove 162 by a first spring 164; the L-type abutting rod 163 is connected to the limiting plate 16 by a second spring 165; an electromagnetic ring 166 is fixedly connected to the lower end of the L-type abutting rod 163; an electro-hydraulic push rod 17 connected to the machine body 1 is provided above the worktable 11; a magnet 171 is embedded on the side of the electro-hydraulic push rod 17 near the limiting plate 16.

[0042] In one embodiment of the present invention, a rubber block 18 is installed on the upper end of each of the two clamping rods 163; a slot 181 is provided on one side of the rubber block 18 above the L-shaped clamping rod 163; a locking block 182 that cooperates with the slot 181 is fixedly connected to one side of the rubber block 18 above the I-shaped clamping rod 163; the rubber block 18 is made of silicone rubber; and an annular groove 167 is provided on the surface of the I-shaped clamping rod 163.

[0043] In one embodiment of the present invention, a slide plate 168 is slidably connected in the slide groove 161; the limiting plate 16 is in slidable contact with the slide plate 168; a screw 169 is rotatably connected to the upper end of the slide plate 168; and the screw 169 is helically connected to the limiting plate 16.

[0044] During operation, the user first rotates the screw 169, causing it to drive the limiting plate 16, which is connected to it via a helical transmission, to descend. This allows the limiting plate 16 to descend relative to the sliding plate 168. The sliding plate 168 descends to a position directly opposite the valve body connection port. At this point, the electro-hydraulic actuator 17 extends, bringing it into contact with the sliding plate 168. Since a magnet 171 is fixedly connected to the end of the electro-hydraulic actuator 17 that contacts the sliding plate 168, the actuator 17 can be tightly attracted to the sliding plate 168 via the magnet. Then, the user controls the electro-hydraulic actuator 17 to retract, pulling the sliding plate 168 out of the slide groove 161. This causes the sliding plate 168 to move the limiting plate 168. 6. Move synchronously, then place the valve body on the rotating plate 141, aligning the valve body connection port with the limiting plate 16. Then, control the extension of the electro-hydraulic push rod 17, so that the electro-hydraulic push rod 17 can push the slide plate 168 into the slide groove 161, so that the slide plate 168 drives the limiting plate 16 into the connection port of the valve body, so that the limiting plate 16 drives the clamping rod 163 to the valve body. Then, control the solenoid ring 166 to be energized, so that the solenoid ring 166 generates a magnetic attraction force on the limiting plate 16, so that the solenoid ring 166 drives the L-shaped clamping rod 163 to squeeze the second spring 165 to rise, until the L-shaped clamping rod 163 extends out of the strip groove 162, so that the L-shaped clamping rod 163 contacts the inner wall of the valve body weld joint.

[0045] Since both clamping rods 163 have locking blocks 182 installed at their upper ends, and the rubber block 18 above the L-shaped clamping rod 163 has a slot 181 on one side; the rubber block 18 above the I-shaped clamping rod 163 has a locking block 182 fixedly connected to one side, which cooperates with the slot 181. In the initial state, the L-shaped clamping rod 163 and the I-shaped clamping rod 163 are in contact, so that the two clamping rods 163 are engaged by the locking blocks 182 and the slots 181. Therefore, during the upward movement of the L-shaped clamping rod 163, the L-shaped clamping rod 163 will push the locking block 182 through the groove wall of the slot 181, causing the I-shaped clamping rod 163 to rise synchronously, so that the two clamping rods 163 are engaged. Both rods 163 extend out of the strip groove 162 and slide in contact with the inner wall of the valve body until the limiting plate 16 drives the clamping rods 163 to the welding port of the valve body. At this time, the two clamping rods 163 extend out of the welding port of the valve body. At this time, the control electro-hydraulic push rod 17 retracts, so that the electro-hydraulic push rod 17 is attracted by the magnet 171 to extend the limiting plate 16 out of the valve body. Since the clamping rods 163 are inserted into the welding port of the valve body, the clamping rods 163 are blocked by the inner wall of the welding port of the valve body during the movement of the limiting plate 16, so that the limiting plate 16 cannot continue to move. As the electro-hydraulic push rod 17 continues to retract, the electro-hydraulic push rod 17 separates from the slide plate 168.

[0046] Since the surface of the I-type abutment rod 163 has an annular groove 167, when the annular groove 167 on the surface of the I-type abutment rod 163 is aligned with the strip groove 162, the I-type abutment rod 163 and the strip groove 162 are laterally slidably connected. Since the I-type abutment rod 163 is connected to the strip groove 162 through a first spring 164, and the first spring 164 is in a stretched state in the initial state, when the I-type abutment rod 163 and the strip groove 162 are laterally slidably connected, the first spring 164 pulls the I-type abutment rod 163 to slide along the strip groove 162 away from the L-type abutment rod 163 until the I-type abutment rod 163 contacts the weld joint of the valve body, so that the two abutment rods 163 are locked against the weld joint of the valve body.

[0047] Before the clamping rod 163 reaches the welding port of the valve body, the user first places the port to be welded onto the clamping rod 163, ensuring that the port to be welded is directly aligned with the welding port of the valve body. When both clamping rods 163 extend beyond the welding port of the valve body, the L-shaped clamping rod 163 extending from the welding port contacts the inner wall of the port to be welded, while the I-shaped clamping rod 163 extending from the welding port of the valve body, pulled by the first spring 164, moves away from the L-shaped clamping rod 163 and contacts the inner wall of the port to be welded. Since rubber blocks 18 are installed on the upper ends of the two clamping rods 163, the rubber blocks 18 contact the inner wall of the port to be welded. Because the rubber blocks 18 are made of silicone rubber, they can press firmly against the inner wall of the port to be welded. Furthermore, the high coefficient of friction of silicone rubber increases the friction between the rubber blocks 18 and the inner wall of the port to be welded, ensuring tight contact between the clamping rods 163 and the port to be welded. At this point, rotating the screw 169 drives the limiting plate 16. The upward movement causes the limiting plate 16 to contact the upper surface of the valve body. Since the two clamping rods 163 are inserted into the port to be welded, the clamping rods 163 and the limiting plate 16 cooperate to limit the port to be welded at the weld joint of the valve body. This prevents the port to be welded from rotating due to the friction of the clamping rods 131 when the grinding rod 131 grinds the weld gap between the port to be welded and the weld joint of the valve body. This ensures the stability of the welding position of the port to be welded and improves the quality of laser welding. In addition, the surface of the rubber block 18 made of silicone rubber is sprayed with a heat-insulating coating. During the pulsed laser welding process, the heat-insulating coating can isolate the heat transferred from the port to be welded to the silicone rubber. Moreover, the rubber block 18 made of silicone rubber also has good heat resistance to ensure that the rubber block 18 will not melt during the laser welding process, thereby ensuring the service life and performance of the rubber block 18 and ensuring the stable operation of the laser welding process.

[0048] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pulsed laser welding device for mechanical valve body components of petroleum equipment, comprising a body (1); a worktable (11) is rotatably mounted on the upper end of the body (1); a mounting frame (12) is fixedly mounted on the upper end of the body (1); a laser emitter (121) is installed between the mounting frame (12) and the body (1); characterized in that: A hydraulic push rod (122) is fixedly installed at the lower end of the mounting bracket (12); a mounting plate (123) is fixedly installed at the end of the hydraulic push rod (122) away from the mounting bracket (12); mounting slots (124) are provided on both sides of the mounting plate (123); the laser emitter (121) is rotatably installed in the mounting slot (124) on one side of the mounting plate (123); a servo motor (13) is rotatably installed in the mounting slot (124) of the mounting plate (123) away from the laser emitter (121); the servo A grinding rod (131) is installed at the output end of the motor (13); a circular groove (14) is provided at the upper end of the worktable (11); a rotating plate (141) is rotatably connected in the circular groove (14); a drive motor (15) is installed inside the machine body (1); the drive motor (15) is used to drive the worktable (11) to rotate; the drive motor (15) and the rotating plate (141) are connected through a drive module; a limit unit is installed at the upper end of the rotating plate (141); the limit unit is used to limit the valve body assembly. The limiting unit includes a limiting plate (16); a sliding groove (161) is provided on one side of the rotating plate (141); the limiting plate (16) is installed in the sliding groove (161); a strip groove (162) is provided at the upper end of the limiting plate (16); two abutting rods (163) are slidably connected in the strip groove (162), and the two abutting rods (163) are respectively set as I-type and L-type; the I-type abutting rod (163) and the strip groove (162) are connected to the sliding groove (162). The groove walls of 62) are connected by a first spring (164); the L-shaped clamping rod (163) and the limiting plate (16) are connected by a second spring (165); an electromagnetic ring (166) is fixedly connected to the lower end of the L-shaped clamping rod (163); an electro-hydraulic push rod (17) connected to the machine body (1) is provided above the worktable (11); a magnet (171) is embedded on the side of the electro-hydraulic push rod (17) near the limiting plate (16).

2. The pulsed laser welding equipment for mechanical valve body components in petroleum equipment according to claim 1, characterized in that: An eccentric column (125) is rotatably connected inside the mounting groove (124); a rocker arm (126) is rotatably connected to one side of the mounting plate (123); the rocker arm (126) is fixedly connected to the eccentric column (125).

3. The pulsed laser welding equipment for mechanical valve body components in petroleum equipment according to claim 2, characterized in that: The eccentric column (125) has a protrusion (127) fixedly connected to its surface; a hinge plate (128) is rotatably connected in the mounting groove (124); the laser emitter (121) and the servo motor (13) are both fixedly connected to the hinge plate (128); a rubber plate (129) is fixedly connected to the surface of the hinge plate (128); the rubber plate (129) is made of silicone rubber.

4. The pulsed laser welding equipment for mechanical valve body components in petroleum equipment according to claim 1, characterized in that: The drive module includes a bevel gear ring (111) and a bevel gear shaft (142); the bevel gear shaft (142) is fixedly connected to the rotating plate (141); the bevel gear ring (111) is fixedly connected to the worktable (11); a cavity (112) is provided inside the machine body (1); the drive motor (15) is installed in the cavity (112); a groove (151) is provided at the output end of the drive motor (15); a double-headed bevel gear (152) is slidably and sealed in the groove (151); the double-headed bevel gear (152) is connected to the bottom of the groove (151) through a connecting spring (153); an electromagnetic plate (154) is embedded in the bottom of the groove (151).

5. The pulsed laser welding equipment for mechanical valve body components in petroleum equipment according to claim 4, characterized in that: The output end of the servo motor (13) is provided with a square slot (132); the grinding rod (131) is slidably connected in the square slot (132); the grinding rod (131) is connected to the bottom of the square slot (132) by a fixing spring (133); an electromagnetic plate (134) is embedded in the bottom of the square slot (132).

6. The pulsed laser welding equipment for mechanical valve body components in petroleum equipment according to claim 1, characterized in that: Both of the clamping rods (163) have rubber blocks (18) installed at their upper ends; a slot (181) is provided on one side of the rubber block (18) above the L-shaped clamping rod (163); a locking block (182) that cooperates with the slot (181) is fixedly connected to one side of the rubber block (18) above the I-shaped clamping rod (163); the rubber block (18) is made of silicone rubber; an annular groove (167) is provided on the surface of the I-shaped clamping rod (163).

7. The pulsed laser welding equipment for mechanical valve body components in petroleum equipment according to claim 1, characterized in that: A slide plate (168) is slidably connected in the slide groove (161); the limiting plate (16) is in sliding contact with the slide plate (168); a screw (169) is rotatably connected to the upper end of the slide plate (168); the screw (169) is helically connected to the limiting plate (16).

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