An angle valve welding equipment and its working method

Abstract

This invention relates to the field of angle valve manufacturing technology, specifically to an angle valve welding equipment and its operating method. The equipment of this invention achieves automated assembly of valve body components and connectors, rotary full-circumference welding, multi-station cyclic testing, and closed-loop material flow through the coordinated operation of an integrated assembly device, welding device, gas testing device, and transfer device. The assembly device utilizes the height difference between the transition groove and the first guide groove to ensure the connector accurately slides into the valve body component's connection hole. The welding device completes full-circumference fusion welding of the joint between the valve body component and the connector through the rotation of the rotating seat relative to the welding torch. The gas testing device uses a turntable to drive fixed components to circulate through cooling, testing, and unloading stations, achieving seamless connection of the testing processes. The transfer device performs lateral and longitudinal composite motion to ensure efficient material transfer between processes. The entire system forms a continuous production line, significantly improving the assembly accuracy, welding sealing performance, and efficiency of gas tightness testing of the welded products.

Description

Technical Field

[0001] This invention relates to the field of angle valve manufacturing technology, and in particular to an angle valve welding device and its working method. Background Technology

[0002] In the traditional angle valve manufacturing industry, the production process generally relies on manual, step-by-step operations to complete the core processes. In the assembly stage, operators manually select valve body components and connectors, visually aligning them and inserting the connectors into the valve body's connection holes. In the welding stage, workers operate welding torches to weld the joints between the valve body components and connectors, repeatedly adjusting the angle to cover different areas of the joint. The airtightness testing stage relies on manual labor; the welded products are moved to an independent testing platform for testing only after they have cooled.

[0003] However, this operating mode suffers from systemic efficiency bottlenecks due to poor process coordination. Manual alignment and assembly, inserting connectors into the valve body's connection holes, significantly extends the assembly cycle for individual parts. The welding process is frequently interrupted due to segmented welding and valve body posture adjustments, severely limiting continuity. More importantly, the reliance on manual coordination between processes results in long waiting periods at each workstation, persistently low equipment utilization, and an overall extended production cycle, leading to structural constraints on production efficiency during large-scale production. Summary of the Invention

[0004] To address the shortcomings mentioned above in the background technology, the present invention provides an angle valve welding device and its working method.

[0005] The present invention adopts the following technical solution:

[0006] In a first aspect, the present invention discloses an angle valve welding device, the device comprising:

[0007] An assembly device includes an assembly column, a first guide groove, and a transition groove. An assembly station is provided on the assembly column, the assembly station connecting the first guide groove and the transition groove, and the installation height of the transition groove is set to be higher than that of the first guide groove. The first guide groove is used to transport a valve body component to the assembly station, and the transition groove is used to transport a connector component to the assembly station, allowing the lower end of the connector component to slide into the connection hole of the valve body component located at the assembly station.

[0008] A welding device includes a rotating seat, a ejector pin, and a welding torch. The welding torch is disposed on one side of the rotating seat, which rotates axially relative to the welding torch. The ejector pin corresponds to the rotation axis of the rotating seat and moves vertically up and down relative to the rotating seat. The rotating seat has a recessed positioning groove. When the valve body is positioned in the positioning groove, the connector is in an upward orientation, and the joint between the valve body and the connector is aligned with the welding position of the welding torch. The welding torch welds the valve body and the connector together to form a welded product.

[0009] A gas testing device includes a turntable, a fixing component, and a gas testing component. The turntable is axially fixed and rotates. The turntable is arranged circumferentially with a placement station, a cooling station, a gas testing station, and a discharge station. The gas testing component is used to test the airtightness of the welded product. At least four fixing components are arranged in a circular array on the turntable. The fixing components are used to place and fix the welded product. The rotation of the turntable drives each fixing component to circulate through the placement station, the cooling station, the gas testing station, and the discharge station.

[0010] A transfer device that clamps the assembled valve body and connector from the assembly device to the welding device, and the transfer device clamps the welded product formed by the welding device to the testing device.

[0011] In one possible implementation of the first aspect, the assembly device further includes a centering pin disposed at the assembly station and moving vertically relative to the assembly station. The lower end of the centering pin is a cone that is larger at the top and smaller at the bottom. When the valve body component is conveyed to the assembly station, the centering pin moves downward to be inserted into the connection hole of the valve body component.

[0012] In a possible implementation of the first aspect, the assembly device further includes a first push rod and a clamping assembly, the first push rod being disposed in the first guide groove and moving within the first guide groove, the clamping assembly clamping the valve body to the first guide groove, and the first push rod pushing the valve body to the assembly station by moving.

[0013] In a possible implementation of the first aspect, the assembly apparatus further includes a conveyor, one end of which is connected to a first vibratory plate on which a valve body is placed, the first vibratory plate conveying the valve body to the conveyor, and the clamping assembly gripping the valve body from the conveyor to the first guide groove.

[0014] In one possible implementation of the first aspect, the assembly device further includes a second guide groove and a second push rod, the second guide groove connecting one side of the transition groove, the second push rod being disposed and sliding within the transition groove, and the second push rod initially being located on the side of the second guide groove away from the assembly station.

[0015] In a possible implementation of the first aspect, the transfer device includes a movable seat and a clamping claw. The movable seat is disposed on the same side of the assembly device, the welding device, and the gas testing device, and the movable seat moves laterally and longitudinally relative to the assembly device, the welding device, and the gas testing device. The clamping claw is disposed on the movable seat for clamping the valve body component.

[0016] In a possible implementation of the first aspect, the fixing assembly includes a fixing platform and a pressing cylinder, a recessed fixing groove is formed on the fixing platform, and after the transfer device clamps the valve body of the welded product onto the fixing groove, the piston rod of the pressing cylinder presses downward onto the welded product located in the fixing groove.

[0017] In a possible implementation of the first aspect, the fixing assembly further includes a baffle located at one end of the fixing groove near the center of the turntable; the air testing assembly includes a plug with a pressure sensor and an air outlet integrated on its end face, and the plug is also connected to an air source via an external air pipe, so that the air pipe and the air outlet are connected; after the transfer device clamps the valve body of the welded product to the fixing groove, the plug moves toward the fixing platform to block one end opening of the valve body and pushes the other end opening of the valve body to be blocked by the baffle, and the piston rod of the pressing cylinder presses downward toward the opening of the joint of the welded product.

[0018] In a possible implementation of the first aspect, the assembly device further includes a sensing component, which includes limiting plates arranged symmetrically on both sides of the conveyor. The two limiting plates are located above the conveyor and move synchronously inward or outward relative to the conveyor to form an open or closed state. One end of each limiting plate is provided with a limiting part protruding towards the center of the conveyor. When the two limiting plates move towards the center of the conveyor to the closed state, the gap between the two limiting parts is greater than the outer diameter of the small diameter end of the valve body and less than the outer diameter of the large diameter end of the valve body. A first sensor and a second sensor are provided on the side of the limiting plate facing the conveyor. The second sensor is integrated into the surface of the limiting part. The first sensor and the second sensor determine the direction of the valve body during conveying by detecting whether the valve body triggers the signal.

[0019] Secondly, the present invention discloses a method for operating the above-mentioned device, which is as follows:

[0020] Pressing steps:

[0021] The first guide groove pushes the valve body component into the arc-shaped groove of the assembly station; the connector component in the transition groove is pushed to the assembly station, and the connector component falls into the connection hole of the valve body component to obtain a combination of the valve body component and the connector component.

[0022] Welding steps:

[0023] The transfer device moves the assembled assembly to the positioning groove of the rotating seat, so that the valve body is embedded in the positioning groove and the joint of the valve body and the connector is aligned with the welding gun position. Then the ejector pin presses down to fix the connector, and the rotating seat rotates at a constant speed to drive the assembly to rotate, so that the welding gun performs full-circumference welding on the exposed joint to form a welded product.

[0024] Inspection steps for welded finished products:

[0025] The transfer device loads the welded product into the fixing component, thereby transferring the welded product to the fixing component located at the placement station in the gas testing device;

[0026] The turntable drives the fixed component and the welded finished product it carries to flow sequentially through the cooling station, and the welded joint of the finished product is cooled down by being left to stand in the cooling station.

[0027] The turntable drives the fixed component and the cooled welded product to flow through the gas testing station, and the gas testing component performs an air tightness test on the cooled welded product.

[0028] The welded products that pass the test are rotated to the discharge station by the turntable and unloaded from the turntable. The welded products that fail the test are removed manually and reprocessed.

[0029] As can be seen from the above description of the structure of the present invention, compared with the prior art, the present invention has the following advantages: The equipment of the present invention, through the coordinated operation of an integrated assembly device, a welding device, a gas testing device, and a transfer device, realizes automated assembly of valve body parts and connector parts, rotary full-circumferential welding, multi-station cyclic testing, and closed-loop material flow. The assembly device utilizes the height difference between the transition groove and the first guide groove to ensure that the connector parts accurately slide into the connecting holes of the valve body parts. The welding device achieves axial positioning of the valve body parts and connector parts by applying vertical pressure through a rotating seat and a pin. The rotating seat rotates relative to the welding torch to complete the full-circumferential fusion welding of the joint between the valve body parts and connector parts. The gas testing device, through a turntable driving a fixed component to circulate through the cooling, testing, and unloading stations, achieves seamless connection of the testing process. The transfer device performs lateral and longitudinal composite motion to ensure efficient material transfer between processes. The entire system forms a continuous production line, which significantly improves the assembly accuracy, welding sealing performance, and gas tightness testing efficiency of the welded products compared to manual methods, thus contributing to improved manufacturing efficiency of angle valves. Attached Figure Description

[0030] Figure 1 This is a three-dimensional structural diagram of the device of the present invention.

[0031] Figure 2 This is a top view of the device of the present invention.

[0032] Figure 3 This is a three-dimensional structural diagram of the transfer device.

[0033] Figure 4 This is a three-dimensional structural diagram of the assembly device.

[0034] Figure 5 for Figure 4 A magnified diagram of point A in the middle.

[0035] Figure 6 This is a three-dimensional structural diagram of the mounting block connecting to the first guide groove.

[0036] Figure 7 This is a schematic diagram of the three-dimensional structure of the connecting block.

[0037] Figure 8 A three-dimensional structural diagram showing the assembly column after mounting blocks and connecting blocks have been installed.

[0038] Figure 9 This is a three-dimensional structural diagram of the welding device.

[0039] Figure 10 for Figure 9 A magnified diagram of point B in the middle.

[0040] Figure 11 A top view showing the transfer device installed on one side of the gas testing apparatus.

[0041] Figure 12 This is a three-dimensional structural diagram of the gas testing device.

[0042] Figure 13 This is a top view of the valve body with the small-diameter end facing forward, after it has been conveyed between the two limiting plates of the sensing assembly.

[0043] Figure 14 This is a top view of the valve body with its large-diameter end facing forward, after it has been conveyed between the two limiting plates of the sensing assembly. Detailed Implementation

[0044] To make the objectives, technical solutions, and advantages of this application clearer, the application will now be described in further detail with reference to the accompanying drawings.

[0045] Hereinafter, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature.

[0046] Furthermore, in this application, directional terms such as "upper" and "lower" are defined relative to the indicated placement of the components in the accompanying drawings. It should be understood that these directional terms are relative concepts, used for relative description and clarification, and can change accordingly depending on the placement of the components in the accompanying drawings.

[0047] This invention provides an angle valve welding device, as shown in the attached figure. Figure 1 and 2 As shown, the equipment includes an assembly unit 2, a welding unit 3, a testing unit 4, and a transfer unit 5. All of these units can be fixedly installed on a workbench 1 to form an integrated production line. The transfer unit 5 performs a key material transfer function. Specifically, the transfer unit 5 clamps the assembled valve body component 61 and connector component 62 from the assembly unit 2 and transfers them to the welding unit 3. The welding unit 3 then welds the joint between the valve body component 61 and connector component 62, forming a complete welded product 6. The transfer unit 5 further clamps the welded product 6 and transfers it to the testing unit 4. The testing unit 4 is responsible for performing a post-weld airtightness test on the welded product 6. This integrated layout significantly improves the automation level and process continuity of angle valve production, effectively ensuring the reliability of welding accuracy and sealing performance.

[0048] Please refer to the appendix. Figure 3The transfer device 5 includes a movable seat 51 and a clamping claw 52. The movable seat 51 is located on the same side of the assembly device 2, welding device 3, and testing device 4, and can move laterally and longitudinally relative to these devices. The clamping claw 52 is mounted on the movable seat 51 to clamp the valve body 61. Specifically, the transfer device 5 also includes a slide plate 53. The movable seat 51 is mounted on the slide plate 53 via linear guide rails, and a cylinder fixed to the slide plate 53 drives the movable seat 51 to reciprocate along the lateral axis. The slide plate 53 is mounted on the worktable 1 via another set of linear guide rails, and a cylinder fixed to the worktable 1 drives the slide plate 53 to move along the longitudinal axis. The clamping claw 52 is located at the front end of the movable seat 51, and can be a pneumatic clamping claw. When performing the transfer task of valve body 61 and welded finished product 6, the slide plate 53 first drives the moving seat 51 to move laterally to the corresponding coordinate of the target device, then the moving seat 51 is positioned longitudinally, and finally the gripping claw 52 completes the gripping or releasing action of valve body 61.

[0049] As attached Figure 4 and 5 As shown, the assembly device 2 includes an assembly column 21, a first guide groove 22, a second guide groove 23, and a transition groove 252. The assembly column 21 is fixed to the workbench 1, and an assembly station 201 is provided on the assembly column 21. See the attached diagram for details. Figures 6 to 8 Assembly station 201 is formed by an internal structure consisting of mounting block 24 and connecting block 25 fixed to one side of assembly column 21. An arc-shaped groove 241 is formed on mounting block 24, and a first guide groove 22 communicates with this arc-shaped groove 241. One end of connecting block 25 has a through groove 251. A transition groove 252 is formed on the upper surface of mounting block 24 and mates with the through groove 251. Connecting block 25 is fastened to mounting block 24, and the through groove 251 corresponds to the arc-shaped groove 241, thus allowing the transition groove 252 to communicate with each other via the through groove 251 and the arc-shaped groove 241. The gap area between the arc-shaped groove 241 and the through groove 251 constitutes assembly station 201. This layout connects assembly station 201 with the first guide groove 22 and transition groove 252. Simultaneously, the installation height of transition groove 252 is higher than that of the first guide groove 22, ensuring smooth guidance and precise alignment during the transport of valve body component 61 and welded finished product 6, significantly improving the automation efficiency and positional accuracy of assembly.

[0050] The first guide groove 22 is used to transport the valve body 61 to the assembly station 201, as detailed in the attached diagram. Figure 4As shown, the assembly device 2 also includes a conveyor 26 and a clamping assembly 27. The clamping assembly 27 includes a column 271, a transverse slide 272, a lifting cylinder 273, and a clamping cylinder 274. The lifting cylinder 273 is fixed to the transverse slide 272, and the clamping cylinder 274 is fixed to the lower end of the piston rod of the lifting cylinder 273. A horizontal plate is fixed on the column 271. The slide is restricted to slide laterally on the horizontal plate by the connection of the slide rail and slider pair. The transverse slide 272 is driven by a cylinder fixed to one side of the horizontal plate to move relative to the conveyor 26 and the first guide groove 22, thereby driving the clamping cylinder 274 to move relative to the conveyor 26 and the first guide groove 22. The lifting cylinder 273 drives the clamping cylinder 274 to rise and fall relative to the conveyor 26 and the first guide groove 22 through the extension and retraction of its piston rod. One end of the conveyor 26 is connected to a first vibratory plate for placing the valve body 61, or it can be placed and conveyed manually. The first vibratory plate adjusts the valve body 61 to a direction parallel to the first guide groove 22 through vibration and conveys it to the conveyor 26. The conveyor 26 then conveys the valve body 61 to a position below one end of the horizontal plate. The clamping cylinder 274 first descends to clamp the valve body 61 on the conveyor 26, then rises and moves horizontally to directly above the first guide groove 22 via the transverse slide 272, and finally descends to release the valve body 61 into the first guide groove 22. This linkage design significantly improves the positioning accuracy and automation efficiency of the valve body 61 transfer, ensuring that the valve body 61 maintains a stable posture during continuous conveying.

[0051] As attached Figure 10 , 13 As shown in Figure 14, since one end of the valve body 61 needs to be connected to the fixed connector 62, the outer diameter of this end needs to be increased, resulting in a large-diameter end 612 and a small-diameter end 611 at both ends of the valve body 61. (Refer to Appendix...) Figure 4The assembly device 2 is equipped with a sensing component 29 to identify the direction of both ends of the valve body 61 during conveying. The sensing component 29 includes limiting plates 291 arranged symmetrically on both sides of the conveyor 26. The two limiting plates 291 are synchronously pushed by cylinders fixed on the worktable 1 and located on both sides of the conveyor 26, so that the two limiting plates 291 move synchronously inward or outward relative to the conveyor 26, forming an open or closed state. The end of the limiting plate 291 near the clamping component 27 is provided with a limiting part 2911 protruding towards the middle of the conveyor 26. When the two limiting plates 291 move towards the middle of the conveyor 26 to the closed state, the gap between the two limiting parts 2911 is greater than the outer diameter of the small diameter end 611 of the valve body 61 and less than the outer diameter of the large diameter end 612 of the valve body 61. A first sensor 292 and a second sensor 293 are provided on the side of the limiting plate 291 facing the conveyor 26. The second sensor 293 is integrated into the surface of the limiting part 2911. Both the first sensor 292 and the second sensor 293 are light sensors. They generate a trigger signal by detecting the obstruction of the light path by the valve body 61 and feed it back to the control system. The control system determines the compliance of the direction of the valve body 61 based on this signal.

[0052] In the initial state of operation of the sensing component 29, the two limiting plates 291 remain in a retracted state. When the valve body 61 moves along the conveyor to the interval between the limiting plates 291, if the smaller diameter end 611 of the valve body 61 is in front, the smaller diameter end 611 of the valve body 61 passes through the gap of the limiting part 2911 until the larger diameter end 612 is blocked by the limiting part 2911. At this time, the first sensor 292 and the second sensor 293 simultaneously trigger the blocking signal, and the control system determines that the valve body 61 is in the correct direction. If the larger diameter end 612 of the valve body 61 is in front, the larger diameter end 612 is blocked and stopped by the limiting part 2911, causing the second sensor 293 to not trigger the blocking signal. Based on this, the control system determines that the valve body 61 is in the wrong direction. After the determination is completed, the control system drives the two limiting plates 291 to move back to the open state, releasing the constraint on the valve body 61 so that it can continue to be conveyed to the bottom of the clamping component 27. After that, the two limiting plates 291 return to the initial state.

[0053] A rotary cylinder 275 is fixedly connected below the lifting cylinder 273 of the clamping assembly 27, and a clamping cylinder 274 is mounted on the rotary output end of the rotary cylinder 275. When the control system determines that the valve body 61 is in the wrong orientation, the clamping cylinder 274 performs a gripping action to lift the valve body 61, and the control system then drives the rotary cylinder 275 to rotate the clamping cylinder 180°, thereby correcting the spatial posture of the valve body 61 to the standard process state with the small diameter end 611 facing forward. This linkage mechanism, through closed-loop control of induction recognition and automatic rotation direction change, completely eliminates the need for manual intervention, ensuring the consistency of the valve body 61's orientation before entering the assembly station 201, and avoiding the risk of assembly misalignment and sealing failure caused by the reverse orientation of the valve body 61 from the source.

[0054] Please refer to the appendix. Figure 5 The assembly device 2 further includes a stop pin 282 and a first push rod 221 working together. The stop pin 282 is located outside the end of the assembly station 201 facing away from the first guide groove 22, and the stop pin 282 is driven by a cylinder fixed to the mounting block 24 to move laterally relative to the opening of the arc-shaped groove 241. The first push rod 221 is located in the first guide groove 22, and the first push rod 221 is driven by a cylinder fixed to the end of the first guide groove 22 away from the assembly station 201, so that the first push rod 221 moves axially within the first guide groove 22. When the transfer device 5 transfers the assembled valve body 61 and connector 62 to the welding device 3, the stop pin 282 moves to the opening of the arc-shaped groove 241 to form a physical block. After the clamping assembly 27 places the valve body 61 into the first guide groove 22, the first push rod 221 pushes the valve body 61 along the first guide groove 22 into the arc-shaped groove 241 of the assembly station 201 until the end of the valve body 61 contacts and is positioned with the stop pin 282. This precise cooperation of mechanical blocking and linear pushing ensures the axial positioning accuracy of the valve body 61 in the assembly station 201, and avoids damage to the valve body 61 caused by over-pushing, which helps to improve the consistency of repeated positioning in the assembly process.

[0055] Preferably, the connecting block 25 also has a relief groove 255 at the top of the arc-shaped groove 241. This relief groove 255 and the arc-shaped groove 241 together form a constraint channel that adapts to the shape of the valve body 61. The contour of the relief groove 255 complements the upper structure of the valve body 61, effectively suppressing the vertical displacement of the valve body 61 during the pushing process through double-sided constraint, and eliminating the impact of the valve body 61's shaking on the assembly alignment accuracy. This three-dimensional positioning structure maintains the smooth conveying of the valve body 61 while ensuring that the joint between the valve body 61 and the connector 62 always remains on the preset assembly plane, providing a stable assembly reference for subsequent welding processes.

[0056] Please refer to the appendix. Figure 5 and 8 The assembly device 2 also includes a centering pin 281, which is positioned above the assembly station 201. The lower end of the centering pin 281 is a cone that is wider at the top and narrower at the bottom. The centering pin 281 is driven to move vertically relative to the assembly station 201 by a cylinder fixed to the assembly column 21. When the valve body 61 is transported to the assembly station 201, the centering pin 281 moves downward, and the end of its cone is inserted into the connecting hole of the valve body 61. Through the progressive contact between the cone surface and the edge of the hole, the circumferential angle of the valve body 61 is automatically corrected, and the central axis of the connecting hole is forcibly locked in the vertical direction. This ensures that the connecting hole always maintains the preset vertical upward process posture, establishes a reference positioning for the coaxial assembly of the subsequent connector 62, effectively solves the problem of misalignment of the sealing surface caused by hole misalignment, and improves the assembly qualification rate.

[0057] Preferably, as shown in the appendix Figure 8 As shown, the mounting block 24 has symmetrically arranged rotatable limiting wheels 222 on both sides of the arc-shaped groove 241. The working end faces of the limiting wheels 222 extend into the arc-shaped groove 241 on both sides. Simultaneously, an adjusting wheel 223 driven by a motor is positioned at the bottom of the arc-shaped groove 241, and the bearing surface formed above the adjusting wheel 223 extends to the bottom surface of the arc-shaped groove 241. When the first push rod 221 pushes the valve body 61 into the working area of ​​the arc-shaped groove 241, the radial freedom of the outer circumferential surface of the valve body 61 is constrained by the guide wheels on both sides, while the bottom is stably supported by the adjusting wheel 223. At the same time, a sensor (such as a vision sensor or photoelectric sensor) can be configured above the assembly station 201 on the assembly column 21 to scan the circumferential surface contour of the valve body 61 in real time and send the scanning information to the control system. Specifically... Once the valve body 61 enters the arc-shaped groove 241 and is supported by the adjusting wheel 223, the real-time azimuth angle of the connecting hole is accurately identified by capturing the geometric feature differences between the edge of the connecting hole and the generatrix of the valve body 61 (such as the light-dark transition area formed by the chamfer of the connecting hole edge or the contour concavity feature). The sensor feeds the position data back to the central control system, which compares the deviation value between the current connecting hole angle and the preset upward reference angle and generates a pulse signal to drive the motor to rotate. The drive motor drives the adjusting wheel 223 to rotate, and the frictional torque between the adjusting wheel 223 and the bottom of the valve body 61 pushes the valve body 61 to rotate. At the same time, the limit wheels 222 on both sides constrain the radial offset until the sensor detects that the central axis of the connecting hole coincides with the vertical direction and stops the rotation. This closed-loop control system achieves angle correction accuracy, ensuring that the connecting hole always faces upward, providing a core guarantee for the automatic alignment and assembly of the connector 62.

[0058] As attached Figure 7 and 8 As shown, the assembly device 2 also includes a second guide groove 23 and a second push rod 253 for the coordinated transport of the connector 62. The second push rod 253 is disposed in the transition groove 252 and slides within it. In its initial state, the second push rod 253 is located on the side of the second guide groove 23 away from the assembly station 201. The second guide groove 23 is inclined. The lower end of the second guide groove 23 is connected to one side of the transition groove 252, and the upper end of the second guide groove 23 is connected to the output port of the second vibratory plate for placing the connector 62 for conveying the connector 62. Alternatively, it can be placed and conveyed manually. The second vibratory plate causes the connector 62 to move in a directional manner on the conveying track through high-frequency micro-amplitude vibration. After the vibration frequency and amplitude are precisely matched, the connector 62 is automatically corrected to a vertical axis process posture under the combined action of the track limiting structure and centrifugal force during the movement. The connector 62 is then conveyed to the second guide groove 23 in this posture and arranged in an orderly manner along the second guide groove 23 inclined downward into the temporary storage area of ​​the transition groove 252 (i.e., the area in the transition groove 252 that is connected to the second guide groove 23). The second push rod 253 pushes the connector 62 one by one to the assembly station 201 according to the process rhythm.

[0059] Specifically, when the second push rod 253 performs reciprocating linear motion, it pushes the connector 62 located in the transition groove 252 to the arc-shaped groove 241 of the assembly station 201, so that the lower end of the connector 62 falls into the connection hole of the valve body 61 located in the assembly station 201. When the second push rod 253 resets, the subsequent connector 62 in the second guide groove 23 automatically fills the gap in the transition groove 252 under the action of gravity, forming a continuous and stable supply cycle of connector 62. In addition, a pressure plate 254 is provided on the second push rod 253. One end of the pressure plate 254 extends out of the second push rod 253 and can cover the connector 62. The other end of the pressure plate 254 is connected to the second push rod 253 by bolts. The bolts pass through the pressure plate 254 and the second push rod 253 with a clearance fit and are fixed, so that the pressure plate 254 moves up and down relative to the second push rod 253. After the second push rod 253 completes the pushing action of the connector 62, the centering pin 281 presses down on the upper surface of the pressure plate 254, and the pressure is evenly transmitted to the top of the connector 62 through the pressure plate 254, causing the connector 62 to be smoothly embedded into the connecting hole of the valve body 61 to form an interference fit. This floating pressure plate 254 design not only ensures a balanced axial pressure distribution to prevent deformation of the connector 62, but also achieves a pressure self-adjustment function through bolt clearance fit. The entire device realizes the automated coordination of connector 62 conveying, positioning and pressing, significantly improving the assembly fit accuracy and process stability. It is also worth mentioning that the installation height of the second push rod 253 is higher than the axial dimension of the connector 62, ensuring that the pressure plate 254 will not interfere with the free sliding of the connector 62 in the second guide groove 23 when it resets.

[0060] As attached Figure 9 and 10 As shown, the welding device 3 includes a rotating base 31, an ejector pin 32, and a welding torch 33. The welding torch 33 is mounted on one side of the rotating base 31 via a robotic arm. A recessed positioning groove 311 is provided on the upper surface of the rotating base 31. The rotating base 31 is mounted on a worktable 1 and rotates axially and fixedly relative to the welding torch 33. Specifically, a first motor is fixed to the bottom of the worktable 1, driving the rotating base 31 to rotate. A support platform 34 is also fixed on the worktable 1. The ejector pin 32 is positioned above the rotation axis of the rotating base 31 on the support platform 34. The ejector pin 32 is driven by a cylinder fixed to the support platform 34 to perform vertical lifting and lowering relative to the rotating base 31. The lower ends of the piston rods of the ejector pin 32 and the cylinder on the support platform 34 can be fixed to bearing seats, and the upper end of the ejector pin 32 is fixed to the inner ring of the bearing seat, allowing the ejector pin 32 to rotate axially and fixedly relative to the piston rod of the cylinder on the support platform 34.

[0061] When the transfer device 5 transfers the assembled valve body 61 and connector 62 from the assembly device 2 to the rotating seat 31, the valve body 61 is embedded in the positioning groove 311, while the connector 62 remains in an upward orientation, and the seam between the valve body 61 and the connector 62 is aligned with the welding position of the welding torch 33. Then, the ejector pin 32 presses down on the connector 62 to position the assembly of the valve body 61 and connector 62 in the positioning groove 311, maintaining zero displacement during rotation. The rotating seat 31 rotates at a uniform speed, causing the seam to move in a circular motion along the trajectory of the welding torch 33. The welding torch 33 performs fusion welding on the continuously exposed seam, forming a welded finished product 6 with a full-circumferential weld seam without dead angles.

[0062] As attached Figure 11 As shown, the gas testing device 4 includes a turntable 41, a fixing assembly 42, and a gas testing assembly 43. The turntable 41 is axially fixed and rotates on the worktable 1, and a second motor is fixed to the bottom of the worktable 1, which drives the turntable 41 to rotate. A placement station 101, a cooling station 102, a gas testing station 103, and a discharge station 104 are sequentially arranged around the turntable 41 on the worktable 1. The placement station 101 is positioned where the clamping claw 52 of the transfer device 5 moves to a position parallel to the connecting line between the center of the turntable 41 and the side of the worktable 1, allowing the clamping claw 52 to load the welded product 6 into the fixing assembly 42 through lateral and then longitudinal movement. Four fixing assemblies 42 are arranged in a circular array on the turntable 41. The rotation of the turntable 41 drives each fixing assembly 42 to circulate through the placement station 101, cooling station 102, gas testing station 103, and discharge station 104. The fixing component 42 is used to place and fix the welded finished product 6. After the welded finished product 6 is placed on the fixing component 42, the rotation of the turntable 41 can drive the fixing component 42 to move sequentially to the cooling station 102 to settle and release the residual welding stress after welding. It then moves to the gas testing station 103 to conduct the air tightness test of the welded finished product 6 through the gas testing component 43, and finally moves to the unloading station 104 to automatically unload the tested welded finished product 6. This turntable 41 layout realizes continuous operation of the inspection process through a circulating conveying mode. The four fixing components 42 form an uninterrupted inspection flow under the drive of the turntable 41, so that the processes of placing the welded finished product 6, welding and cooling the welded finished product 6, air tightness testing of the welded finished product 6, and unloading the welded finished product 6 are seamlessly connected. The entire system can complete the full process inspection of four welded finished products 6 in a single cycle, thus improving the inspection efficiency.

[0063] As attached Figure 12As shown, the fixing component 42 adopts a modular clamping structure, specifically including a fixing platform 421 and a pressing cylinder 422. The fixing platform 421 is set inside a frame 423, and both the fixing platform 421 and the frame 423 are fixed on the turntable 41. The pressing cylinder 422 is fixed on the frame 423, and the piston rod of the pressing cylinder 422 extends downward into the frame 423. A recessed fixing groove 4211 is formed on the fixing platform 421. After the clamping claw 52 of the transfer device 5 clamps the valve body 61 of the welded finished product 6 and places it on the fixing groove 4211 by longitudinal movement, the piston rod of the pressing cylinder 422 presses downward against the connector 62 of the welded finished product 6 located in the fixing groove 4211, and seals the upward opening of the connector 62, thereby fixing the welded finished product 6 on the fixing groove 4211. Preferably, a rubber cap 4221 is fixed to the lower end of the piston rod of the pressing cylinder 422 to completely seal the upward opening of the connector 62.

[0064] Please refer to the appendix. Figure 12 The fixing component 42 also includes a baffle 424, which is located at one end of the fixing groove 4211 near the center of the turntable 41. The air testing component 43 includes a plug 431, which is driven by a cylinder fixed to the worktable 1 to move relative to the turntable 41. The end face of the plug 431 integrates a pressure sensor and an air outlet. The plug 431 is also connected to an air source through an external air pipe, and the air pipe and the air outlet are connected. After the transfer device 5 clamps the welded product 6 into the fixing groove 4211, the plug 431 moves towards the fixing table 421 to block one end opening of the valve body 61, and pushes the welded product 6 to the other end opening of the valve body 61 to be blocked by the baffle 424. Then, the piston rod of the pressing cylinder 422 presses down onto the opening of the connector 62 of the welded product 6, thereby sealing the inlet and outlet of the valve body 61 and the opening of the connector 62 connecting the valve core to prevent gas leakage. Next, gas at a certain pressure is injected into the welded finished product 6 through the air tube, and the pressure change is monitored using a pressure sensor. The airtightness of the angle valve is determined based on the pressure change. If the pressure drops rapidly, it indicates that the angle valve has a leakage problem and needs to be removed and re-welded.

[0065] The fixing groove 4211 is inclined downwards towards the groove outside the turntable 41, and then refer to the attached... Figure 1 and 2 The discharge station 104 has a fixed discharge hopper 11, the lower end of which is inclined downwards. When the turntable 41 rotates and drives the fixing component 42 to the discharge station 104, the fixing groove 4211 corresponds to the discharge hopper 11. At this time, lifting the piston rod of the pressing cylinder 422 upwards will cause the welded finished product 6 to lose pressure and slide down along the fixing groove 4211.

[0066] The present invention also provides a method for operating the above-mentioned device, the method being as follows:

[0067] Pressing steps:

[0068] Valve body 61 is sequentially conveyed to conveyor 26; clamping assembly 27 is lowered by lifting cylinder 273 to grab valve body 61 on conveyor 26, and then moved horizontally by transverse slide block 272 to directly above first guide groove 22, releasing valve body 61 into first guide groove 22.

[0069] The first push rod 221 pushes the valve body 61 along the first guide groove 22 into the arc groove 241 of the assembly station 201 until the end of the valve body 61 contacts the stop pin 282 outside the port of the arc groove 241 to complete the axial positioning.

[0070] The centering pin 281 moves downward so that the end of its conical body is inserted into the connecting hole of the valve body 61. The connecting hole is automatically corrected to the vertical direction through the contact of the conical surface. At the same time, the sensor can scan the surface contour of the valve body 61, detect the real-time azimuth angle of the connecting hole and feed it back to the control system. The control system drives the motor to rotate the adjusting wheel, and uses the frictional torque to push the valve body 61 to rotate until the connecting hole is vertically upward.

[0071] The connector 62 is oriented and conveyed to the second guide groove 23, and then slides down the second guide groove 23 to the transition groove 252 for temporary storage. The second push rod 253 pushes the connector 62 in the transition groove 252 to the assembly station 201, so that the lower end of the connector 62 falls into the connection hole of the valve body 61. The centering pin 281 presses down on the upper surface of the pressure plate 254, and the pressure is evenly transmitted to the top of the connector 62 through the pressure plate 254, so that the connector 62 is smoothly embedded into the connection hole to form an interference fit, thereby obtaining the assembly of the valve body 61 and the connector 62.

[0072] Welding steps:

[0073] The transfer device 5 clamps and transfers the assembled assembly to the positioning groove 311 of the rotating seat 31 of the welding device 3, so that the valve body 61 is embedded in the positioning groove 311 and the joint of the valve body 61 and the connector 62 is aligned with the position of the welding gun 33; the ejector pin 32 presses down to fix the connector 62, the rotating seat 31 rotates at a uniform speed to drive the assembly to rotate, and the welding gun 33 performs full-circumference fusion welding on the exposed joint to form the welded product 6;

[0074] Six inspection steps for welded finished products:

[0075] The clamping claw 52 of the transfer device 5 aligns with the central axis of the turntable 41 by moving laterally, and then advances longitudinally to load the welded product 6 into the fixing groove 4211 of the fixing component 42, so as to transfer the welded product 6 to the fixing table 421 located at the placement station 101.

[0076] The turntable 41 drives the fixed assembly 42 to carry the welded finished product 6 through the cooling station 102 in sequence, and the welded joint is cooled down by standing in the cooling station 102 to release the welding stress.

[0077] The plug 431 moves toward the fixed platform 421 and seals one end of the valve body 61 opening. The welded product 6 is pushed so that the other end of the opening contacts the baffle 424 for sealing. The pressing cylinder 422 presses down to seal the opening of the connector 62, completing the sealing of the three ports of the angle valve. Gas is injected into the welded product 6 through the air pipe of the plug 431. The pressure sensor monitors the pressure change in real time to determine the airtightness. Thus, the assembly, welding and testing of the valve body 61 and the connector 62 are completed.

[0078] The qualified welded product 6 is rotated to the discharge station 104 by the turntable 41. The piston rod of the pressing cylinder 422 rises to release the fixing of the welded product 6, so that the welded product 6 slides into the discharge hopper 11 along the inclined fixing groove 4211 to complete the automatic unloading. The unqualified welded product 6 is removed manually and reprocessed.

[0079] In the above method, after the transfer device 5 moves the assembly, the stop pin 282 resets and releases the obstruction, and the first push rod 221 pushes the next valve body component 61 into the assembly station 201; when the second push rod 253 resets, the connector component 62 in the second guide groove 23 automatically fills in the transition groove 252; the turntable 41 drives the four fixed components 42 in a single cycle to simultaneously complete the loading, cooling, testing and unloading processes. Each device realizes the flow of the angle valve components through the lateral and longitudinal compound movement of the transfer device 5. The whole method realizes continuous production of assembly positioning, precision welding and closed-loop testing, ensuring process continuity and product quality stability, and is conducive to improving the production efficiency of angle valves.

[0080] The above are merely specific embodiments of the present invention, but the design concept of the present invention is not limited thereto. Any non-substantial modifications made to the present invention using this concept shall be considered as infringing upon the protection scope of the present invention.

Claims

1. An angle valve welding equipment, characterized in that, The device includes: An assembly device includes an assembly column, a first guide groove, a transition groove, a first push rod, a clamping assembly, a conveyor, and a sensing assembly. An assembly station is provided on the assembly column, connecting the first guide groove and the transition groove, with the transition groove's installation height set higher than the first guide groove. The first push rod is disposed within the first guide groove and moves within it. The clamping assembly clamps a valve body component to the first guide groove, and the first push rod pushes the valve body component within the first guide groove to the assembly station. The transition groove transports a connector component to the assembly station, allowing the lower end of the connector component to slide into the connection hole of the valve body component located at the assembly station. The conveyor transports the valve body component, and the clamping assembly moves from the conveyor... The valve body component is grasped and placed into the first guide groove; the sensing component includes limiting plates arranged symmetrically on both sides of the conveyor. The two limiting plates are located above the conveyor and move synchronously inward or outward relative to the conveyor to form an open or closed state. One end of the limiting plate is provided with a limiting part protruding towards the middle of the conveyor. When the two limiting plates move towards the middle of the conveyor to the closed state, the gap between the two limiting parts is greater than the outer diameter of the small diameter end of the valve body component and less than the outer diameter of the large diameter end of the valve body component; a first sensor and a second sensor are provided on the side of the limiting plate facing the conveyor. The second sensor is integrated into the surface of the limiting part. The first sensor and the second sensor determine the direction of the valve body component during conveying by detecting whether the valve body component triggers the signal. A welding device includes a rotating seat, a ejector pin, and a welding torch. The welding torch is disposed on one side of the rotating seat, which rotates axially relative to the welding torch. The ejector pin corresponds to the rotation axis of the rotating seat and moves vertically up and down relative to the rotating seat. The rotating seat has a recessed positioning groove. When the valve body is positioned in the positioning groove, the connector is in an upward orientation, and the joint between the valve body and the connector is aligned with the welding position of the welding torch. The welding torch welds the valve body and the connector together to form a welded product. A gas testing device includes a turntable, a fixing component, and a gas testing component. The turntable is axially fixed and rotates. The turntable is arranged circumferentially with a placement station, a cooling station, a gas testing station, and a discharge station. The gas testing component is used to test the airtightness of the welded product. At least four fixing components are arranged in a circular array on the turntable. The fixing components are used to place and fix the welded product. The rotation of the turntable drives each fixing component to circulate through the placement station, the cooling station, the gas testing station, and the discharge station. A transfer device that clamps the assembled valve body and connector from the assembly device to the welding device, and the transfer device clamps the welded product formed by the welding device to the testing device.

2. The device as described in claim 1, characterized in that, The assembly device also includes a centering pin, which is disposed at the assembly station and moves vertically relative to the assembly station. The lower end of the centering pin is a cone that is larger at the top and smaller at the bottom. When the valve body is transported to the assembly station, the centering pin moves downward to be inserted into the connection hole of the valve body.

3. The device as described in claim 1, characterized in that, The assembly device further includes a second guide groove and a second push rod. The second guide groove connects to one side of the transition groove, and the second push rod slides within the transition groove. Initially, the second push rod is located on the side of the second guide groove away from the assembly station.

4. The device as described in claim 1, characterized in that, The transfer device includes a movable seat and a clamping claw. The movable seat is disposed on the same side of the assembly device, the welding device and the gas testing device, and the movable seat moves laterally and longitudinally relative to the assembly device, the welding device and the gas testing device. The clamping claw is disposed on the movable seat for clamping the valve body component.

5. The device as described in claim 1, characterized in that, The fixing assembly includes a fixing platform and a pressing cylinder. A recessed fixing groove is formed on the fixing platform. After the transfer device clamps the valve body of the welded product onto the fixing groove, the piston rod of the pressing cylinder presses downward onto the welded product located in the fixing groove.

6. The device as described in claim 5, characterized in that, The fixing assembly also includes a baffle located at one end of the fixing groove near the center of the turntable; the air testing assembly includes a plug with a pressure sensor and an air outlet integrated on its end face, and the plug is also connected to an air source via an external air pipe, so that the air pipe and the air outlet are connected; after the transfer device clamps the valve body of the welded product to the fixing groove, the plug moves toward the fixing platform to block one end opening of the valve body and pushes the other end opening of the valve body to be blocked by the baffle, and the piston rod of the pressing cylinder presses down toward the opening of the joint of the welded product.

7. A method of operating the device as described in any one of claims 1 to 6, characterized in that, The method is as follows: Pressing steps: The first guide groove pushes the valve body component into the arc-shaped groove of the assembly station; the connector component in the transition groove is pushed to the assembly station, and the connector component falls into the connection hole of the valve body component to obtain a combination of the valve body component and the connector component. Welding steps: The transfer device moves the assembled assembly to the positioning groove of the rotating seat, so that the valve body is embedded in the positioning groove and the joint of the valve body and the connector is aligned with the welding gun position. Then the ejector pin presses down to fix the connector, and the rotating seat rotates at a constant speed to drive the assembly to rotate, so that the welding gun performs full-circumference welding on the exposed joint to form a welded product. Inspection steps for welded finished products: The transfer device loads the welded product into the fixing component, thereby transferring the welded product to the fixing component located at the placement station in the gas testing device; The turntable drives the fixed component and the welded finished product it carries to flow sequentially through the cooling station, and the welded joint of the finished product is cooled down by being left to stand in the cooling station. The turntable drives the fixed component and the cooled welded product to flow through the gas testing station, and the gas testing component performs an air tightness test on the cooled welded product. The welded products that pass the test are rotated to the discharge station by the turntable and unloaded from the turntable. The welded products that fail the test are removed manually and reprocessed.

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