Angle valve welding equipment and working method thereof

Abstract

The invention relates to the technical field of angle valve manufacturing, in particular to angle valve welding equipment and a working method thereof. According to the equipment, through cooperative operation of the integrated assembling device, the welding device, the gas testing device and the transferring device, automatic assembling, rotary type all-round welding, multi-station circulating detection and closed-loop material circulation of the valve body piece and the connector piece are achieved; wherein the assembling device ensures that a connector piece precisely slides to a valve body piece connecting hole by utilizing the height difference design of a transition groove and a first guide groove, and the welding device rotates relative to a welding gun through a rotating seat to complete the full-circumference fusion welding of a seam between the valve body piece and the connector piece. The gas testing device drives the fixing assembly to circularly flow through the cooling station, the testing station and the discharging station through the rotating disc to achieve seamless connection of detection procedures, and the transferring device executes transverse and longitudinal composite motion to guarantee efficient transferring of materials among the procedures. The whole set of system forms a continuous production line, and the assembly precision, the welding sealing performance and the airtightness detection efficiency of welded finished products are remarkably improved.

Description

Technical Field

[0001] The present invention relates to the technical field of angle valve manufacturing, in particular to an angle valve welding device and a working method thereof. Background Art

[0002] In traditional angle valve manufacturing, the production process generally relies on manual, step-by-step operations to complete core processes. Assembly requires operators to manually select valve body components and connectors, visually aligning the connectors and inserting them into the valve body connection holes. Welding involves workers manipulating the welding torch to weld the joints between the valve body and connectors, repeatedly adjusting the angle to cover different areas of the joint. The airtightness testing phase relies on manual labor, allowing the finished weld to cool before being transported to an independent test bench for testing.

[0003] However, this operating mode faces a systemic efficiency bottleneck caused by poor process connection. Manual alignment assembly involves inserting the connector into the connection hole of the valve body, significantly extending the single-piece assembly cycle. The welding process is frequently interrupted by segmented welding and valve body posture adjustments, severely limiting its continuity. More importantly, the reliance on manual connection between processes results in long-term waiting periods for each workstation, resulting in continuously low equipment utilization and forced extension of the entire production cycle. This puts structural constraints on production efficiency during large-scale production. Summary of the Invention

[0004] In view of the deficiencies raised in the above background technology, the present invention provides an angle valve welding device and a working method thereof.

[0005] The present invention adopts the following technical solutions: In a first aspect, the present invention discloses an angle valve welding device, the device comprising: An assembly device comprising an assembly column, a first guide groove, and a transition groove; an assembly station is provided on the assembly column, the assembly station being connected to the first guide groove and the transition groove, and the installation height of the transition groove is set to be higher than the first guide groove; the first guide groove is used to convey the valve body to the assembly station, and the transition groove is used to convey the connector to the assembly station, so that the lower end of the connector slides into the connection hole of the valve body located at the assembly station; A welding device comprising a rotating seat, an ejector pin, and a welding gun; the welding gun is disposed on one side of the rotating seat, the rotating seat being fixedly rotatable relative to the welding gun axially, the ejector pin corresponding to the rotation axis of the rotating seat, and the ejector pin vertically rising and falling relative to the rotating seat, the rotating seat being provided with a recessed positioning groove; when the valve body is positioned in the positioning groove, the joint member is in an upward posture, and the joint between the valve body and the joint member is aligned with the welding position of the welding gun, and the welding gun welds the valve body and the joint member to form a welded product; A gas testing device, comprising a turntable, a fixed assembly, and a gas testing assembly, wherein the turntable is in an axially fixed rotating state, and a placement station, a cooling station, a gas testing station, and a discharge station are sequentially arranged circumferentially on the turntable. The gas testing assembly is used to test the air tightness of the finished welded product, and at least four fixed assemblies are distributed in an annular array on the turntable. The fixed assembly is used to place and fix the finished welded product, and the rotation of the turntable drives each fixed assembly to circulate through the placement station, the cooling station, the gas testing station, and the discharge station. A transfer device is provided, wherein the transfer device clamps the assembled valve body and connector from the assembling device to the welding device, and the transfer device clamps the welded product formed by the welding device to the gas testing device.

[0006] In a possible implementation of the first aspect, the assembly device also includes a centering pin, which is arranged at the assembly station and moves vertically relative to the assembly station. The lower end of the centering pin is a cone with a larger upper part and a smaller lower part; when the valve body is conveyed to the assembly station, the centering pin moves downward to be inserted into the connecting hole of the valve body.

[0007] In a possible implementation of the first aspect, the assembly device also includes a first push rod and a clamping assembly, the first push rod is arranged in the first guide groove, and the first push rod is located in the first guide groove and moves, the clamping assembly clamps the valve body to the first guide groove, and the first push rod pushes the valve body to the assembly station by moving.

[0008] In a possible implementation of the first aspect, the assembly device also includes a conveyor, one end of which is connected to a first vibration plate on which the valve body is placed, the first vibration plate conveys the valve body to the conveyor, and the clamping assembly grabs the valve body from the conveyor to the first guide groove.

[0009] In a possible implementation of the first aspect, the assembly device further includes a second guide groove and a second push rod, the second guide groove being connected to one side of the transition groove, the second push rod being arranged to slide in the transition groove, and the second push rod being initially located on the side of the second guide groove away from the assembly station.

[0010] In a possible implementation of the first aspect, the transfer device includes a movable seat and a clamping claw, the movable seat is arranged 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, and the clamping claw is arranged on the movable seat for clamping the valve body.

[0011] In a possible implementation of the first aspect, the fixing assembly includes a fixing table and a pressing cylinder, a recessed fixing groove is formed on the fixing table, and after the transfer device clamps the valve body of the welded product to the fixing groove, the piston rod of the pressing cylinder presses downward onto the welded product located in the fixing groove.

[0012] In a possible implementation of the first aspect, the fixing assembly further includes a baffle, which is located at one end of the fixing groove close to the center of the turntable; the gas test assembly includes a plug, the end face of the plug is integrated with a pressure sensor and an air outlet, and the plug is also connected to the air source through an external air pipe to connect the air pipe and the air outlet; after the transfer device clamps the valve body of the welded product to the fixing groove, the plug moves toward the fixed platform to block the opening at one end of the valve body, and pushes the opening at the other end 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.

[0013] In a possible implementation of the first aspect, the assembly device also includes a sensing component, which includes limit plates arranged in mirror symmetry on both sides of the conveyor, and the two limit plates are located above the conveyor and move synchronously inward or outward relative to the conveyor to form an open or contracted state. A limit portion protruding toward the middle of the conveyor is provided at one end of the limit plate. When the two limit plates move toward the middle of the conveyor to a contracted state, the gap between the two limit portions is greater than the outer diameter of the small diameter end of the valve body and smaller 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 limit plate facing the conveyor, and the second sensor is integrated into the surface of the limit portion. The first sensor and the second sensor determine the direction of the valve body during transportation by detecting whether the valve body triggers it.

[0014] In a second aspect, the present invention discloses a working method of the above-mentioned device, which is as follows: Pressing steps:

[0015] The first guide groove pushes the valve body into the arc groove of the assembly station; the connector in the transition groove is pushed to the assembly station, and the connector falls into the connecting hole of the valve body to obtain a combination of the valve body and the connector; Soldering steps:

[0016] The transfer device transfers 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 between the valve body and the connector is aligned with the welding gun position. Then, the ejector 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-circle welding on the exposed joint to form a welded product. Welding product inspection steps: The transfer device loads the finished weld product into the fixing assembly, so as to transfer the finished weld product to the fixing assembly located at the placement station in the gas testing device; The turntable drives the fixed assembly and the welded products carried by it to flow through the cooling station in sequence, and the welded joints of the welded products are cooled by being left stationary at the cooling station; The turntable drives the fixed component and the cooled finished welded product to flow through the gas testing station, and the gas testing component performs an air tightness test on the cooled finished welded product; The finished welded products that have passed the test are transferred to the discharging station along with the turntable and unloaded from the turntable, while the finished welded products that have failed the test are manually removed and reprocessed.

[0017] From the above description of the structure of the present invention, it can be seen that compared with the prior art, the present invention has the following advantages: the equipment of the present invention realizes the automated assembly, rotary full-circle welding, multi-station cyclic detection and closed-loop material flow of valve body parts and connector parts through the coordinated operation of an integrated assembly device, a welding device, a gas testing device and a transfer device, wherein the assembly device utilizes the height difference design between the transition groove and the first guide groove to ensure that the connector part slides accurately into the valve body part connection hole, the welding device realizes the axial positioning of the valve body part and the connector part by applying vertical pressure through the rotating seat and the ejector pin, and completes the full-circle fusion welding of the joint between the valve body part and the connector part by rotating the rotating seat relative to the welding gun, the gas testing device drives the fixed component to circulate through the cooling, testing and unloading stations by the turntable to realize seamless connection of the detection process, and the transfer device performs a composite horizontal and vertical motion to ensure efficient transfer of materials between each process. The entire system forms a continuous production line, which significantly improves the assembly accuracy, welding sealing and airtightness detection efficiency of the finished welded product compared to the manual connection method, and is therefore conducive to improving the production efficiency of the angle valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the device of the present invention.

[0019] Figure 2 It is a top view of the device of the present invention.

[0020] Figure 3 Schematic diagram of the three-dimensional structure of the transfer device.

[0021] Figure 4 It is a schematic diagram of the three-dimensional structure of the assembly device.

[0022] Figure 5 for Figure 4 A magnified schematic diagram.

[0023] Figure 6 This is a schematic diagram of the three-dimensional structure of the mounting block connected to the first guide groove.

[0024] Figure 7 Schematic diagram of the three-dimensional structure of the connecting block.

[0025] Figure 8 Schematic diagram of the three-dimensional structure after the installation block and connection block are set for the assembly column.

[0026] Figure 9 It is a schematic diagram of the three-dimensional structure of the welding device.

[0027] Figure 10 for Figure 9 Schematic diagram of the enlarged portion B.

[0028] Figure 11 This is a top view of the transfer device set up on one side of the gas test device.

[0029] Figure 12 Schematic diagram of the three-dimensional structure of the gas testing device.

[0030] Figure 13 This is a top view of the small-diameter end of the valve body after it is conveyed forward to between the two limit plates of the sensing component.

[0031] Figure 14 This is a top view of the valve body after the large diameter end is conveyed to between the two limit plates of the sensing component. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solutions and advantages of this application clearer, this application will be further described in detail below with reference to the accompanying drawings.

[0033] In the following, the terms "first," "second," etc. are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the quantity of the technical features indicated. Therefore, a feature specified as "first," "second," etc. may explicitly or implicitly include one or more of the features.

[0034] In addition, in this application, directional terms such as "upper" and "lower" are defined relative to the orientation of the components in the drawings. It should be understood that these directional terms are relative concepts. They are used for relative description and clarification, and they can change accordingly according to changes in the orientation of the components in the drawings.

[0035] The present invention provides an angle valve welding device, as shown in the attached Figure 1 and 2As shown, the equipment includes an assembly device 2, a welding device 3, a gas testing device 4 and a transfer device 5. Among them, the above devices can be fixedly installed on a workbench 1 to form an integrated production line. The transfer device 5 performs the key material flow function. Specifically, the transfer device 5 clamps the assembled valve body part 61 and the connector part 62 from the assembly device 2 and transfers it to the welding device 3. The welding device 3 then welds the joints between the valve body part 61 and the connector part 62 to form a complete welded product 6. The transfer device 5 further clamps the welded product 6 and transfers it to the gas testing device 4. The gas testing device 4 is responsible for performing the post-welding air tightness detection process on the welded product 6. This integrated layout significantly improves the degree of automation and process continuity in angle valve production, and effectively ensures the reliability of welding accuracy and sealing performance.

[0036] Please refer to the attached Figure 3 The transfer device 5 includes a moving seat 51 and a clamping claw 52. The moving seat 51 is arranged on the same side of the assembly device 2, the welding device 3 and the gas testing device 4, and the moving seat 51 moves laterally and longitudinally relative to the assembly device 2, the welding device 3 and the gas testing device 4. The clamping claw 52 is arranged on the moving seat 51 to clamp the valve body 61. Specifically, the transfer device 5 also includes a slide 53. The moving seat 51 is installed on the slide 53 through a linear guide rail. The cylinder fixed to the slide 53 drives the moving seat 51 to reciprocate along the transverse coordinate axis; the slide 53 is installed on the workbench 1 through another set of linear guide rails. The cylinder fixed to the workbench 1 drives the slide 53 to move along the longitudinal coordinate axis. The clamping claw 52 is arranged at the front end of the moving seat 51. Specifically, the clamping claw 52 can be a pneumatic clamping claw. When performing the task of transferring the valve body part 61 and the welded product 6, the slide 53 first drives the movable seat 51 to move horizontally to the corresponding coordinates of the target device, and then the movable seat 51 is positioned longitudinally, and finally the clamping claw 52 completes the grasping or releasing action of the valve body part 61.

[0037] 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. Figures 6 to 8The assembly station 201 is formed by an internal structure consisting of a mounting block 24 fixed to one side of the assembly column 21 and a connecting block 25. An arcuate groove 241 is defined on the mounting block 24, with the first guide groove 22 communicating with the arcuate groove 241. A through groove 251 extends through one end of the connecting block 25. A transition groove 252 is formed on the upper surface of the mounting block 24 and abuts against the through groove 251. The connecting block 25 is fastened to the mounting block 24, with the through groove 251 corresponding to the arcuate groove 241, thereby connecting the transition groove 252 via the through groove 251 and the arcuate groove 241. The gap between the arcuate groove 241 and the through groove 251 constitutes the assembly station 201. This creates a layout where the assembly station 201 connects the first guide groove 22 and the transition groove 252. The transition groove 252 is installed at a higher height than the first guide groove 22, ensuring smooth guidance and precise alignment of the valve body 61 and the welded product 6 during transport, significantly improving assembly automation efficiency and positioning accuracy.

[0038] The first guide groove 22 is used to transport the valve body 61 to the assembly station 201. Figure 4 As shown, the assembly device 2 further 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 transverse plate is fixed to the column 271, and the slide is restricted from sliding transversely on the transverse 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 transverse 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 by the extension and contraction of its piston rod. One end of the conveyor 26 is connected to the first vibrating plate on which the valve body 61 is placed to convey the valve body 61, or it can be placed and conveyed manually. The first vibrating plate adjusts the valve body 61 to a direction parallel to the first guide groove 22 through vibration conveying and then conveys it to the conveyor 26. The conveyor 26 then conveys the valve body 61 to a position below one end of the cross plate. The clamping cylinder 274 first descends to clamp the valve body 61 on the conveyor 26, then rises and translates to the top of 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 transfer of the valve body 61, ensuring that the valve body 61 maintains a stable posture during continuous conveying.

[0039] As attached Figure 10 、 13 As shown in FIG14 , since one end of the valve body 61 needs to be connected to the fixed joint 62, the outer diameter of this end needs to be increased, resulting in the outer diameters of both ends of the valve body 61 forming a large diameter end 612 and a small diameter end 611. Figure 4 The assembly device 2 is further equipped with a sensing assembly 29 to identify the two end directions of the valve body 61 during conveyance. The sensing assembly 29 includes limit plates 291 arranged in mirror-symmetrical fashion on either side of the conveyor 26. The two limit plates 291 are synchronously driven by cylinders fixed to the workbench 1 and located on either side of the conveyor 26, causing the two limit plates 291 to move inward or outward relative to the conveyor 26, thereby forming an open or retracted state. A limit portion 2911 protruding toward the center of the conveyor 26 is provided on one end of the limit plate 291 near the clamping assembly 27. When the two limit plates 291 move toward the center of the conveyor 26 to a retracted state, the gap between the two limit portions 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 set on the side of the limit plate 291 facing the conveyor 26, wherein the second sensor 293 is integrated into the surface of the limit part 2911. The first sensor 292 and the second sensor 293 are both light sensors. By detecting the obstruction of the light path by the valve body 61, a trigger signal is generated and fed back to the control system, and the control system determines the direction compliance of the valve body 61 based on this.

[0040] In the initial state of operation of the sensing assembly 29, the two limit plates 291 remain retracted. When the valve body 61 moves along the conveyor to the area between the limit plates 291, if the smaller end 611 of the valve body 61 is in the lead, it penetrates the gap between the limit portions 2911 until the larger end 612 is blocked by the limit portion 2911. At this point, the first sensor 292 and the second sensor 293 simultaneously trigger blocking signals, and the control system determines that the valve body 61 is in the correct orientation. If the larger end 612 of the valve body 61 is in the lead, it is blocked by the limit portion 2911, preventing the second sensor 293 from triggering a blocking signal. Based on this, the control system determines that the valve body 61 is in the incorrect orientation. Once this determination is complete, the control system drives the two limit plates 291 to move back to their open position, releasing the constraint on the valve body 61 and allowing it to continue to be conveyed below the clamping assembly 27. The two limit plates 291 then return to their initial position.

[0041] The lifting cylinder 273 of the clamping assembly 27 is fixedly connected to the rotating cylinder 275 below, and the clamping cylinder 274 is assembled at the rotation output end of the rotating cylinder 275. When the control system determines that the valve body 61 is in the wrong direction, the clamping cylinder 274 performs a grasping action to lift the valve body 61. The control system then drives the rotating cylinder 275 to rotate the clamping cylinder 180°, 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 completely eliminates the need for manual intervention through closed-loop control of sensor recognition and automatic rotation and direction change, ensuring the consistency of the direction of the valve body 61 before entering the assembly station 201, and avoiding the risk of assembly misalignment and sealing failure caused by the reverse rotation of the valve body 61 at the source.

[0042] Please refer to the attached Figure 5 , the assembly device 2 also includes a stop pin 282 and a first push rod 221 that work together. The stop pin 282 is arranged 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 telescopically relative to the notch of the arc groove 241. The first push rod 221 is arranged 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 is located in the first guide groove 22 and moves axially. After the transfer device 5 transfers the assembly formed by the assembled valve body part 61 and the connector part 62 to the welding device 3, the stop pin 282 moves to the notch extending from the arc groove 241 to form a physical blockage. After the clamping assembly 27 places the valve body 61 in the first guide groove 22, the first push rod 221 pushes the valve body 61 along the first guide groove 22 into the arcuate groove 241 of the assembly station 201 until the end of the valve body 61 contacts and locks with the stop pin 282. This precise combination of mechanical blocking and linear pushing not only ensures the axial positioning accuracy of the valve body 61 in the assembly station 201, but also prevents damage to the valve body 61 caused by overshoot, thereby improving the repeatability and consistency of the assembly process.

[0043] Preferably, the connecting block 25 further includes a clearance groove 255 at the top of the arcuate groove 241. This clearance groove 255 and the arcuate groove 241 together form a constraint channel adapted to the outer shape of the valve body 61. The contour of the clearance groove 255 complements the upper structure of the valve body 61, effectively suppressing vertical displacement of the valve body 61 during the pushing process through top-and-bottom constraints, eliminating the impact of the shaking of the valve body 61 on the assembly alignment accuracy. This three-dimensional positioning structure maintains the smooth delivery 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.

[0044] Please refer to the attached Figure 5 and 8 The assembly device 2 also includes a centering pin 281, which is arranged above the assembly station 201. The lower end of the centering pin 281 is a cone with a larger upper portion and a smaller lower portion. 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. The circumferential angle of the valve body 61 is automatically corrected through the progressive contact between the cone surface and the hole edge, forcibly locking the central axis of the connecting hole in the vertical direction, ensuring that the connecting hole always maintains the preset process posture of vertical upward, establishing a reference positioning for the subsequent coaxial assembly of the connector 62, and effectively solving the problem of sealing surface misalignment caused by hole deviation, thereby improving the qualified rate of assembly.

[0045] Preferably, as shown in the attached Figure 8 As shown, the mounting block 24 has rotatable limiting wheels 222 symmetrically arranged on either side of the arcuate slot 241. The working end surfaces of the limiting wheels 222 extend into either side of the arcuate slot 241. A motor-driven adjusting wheel 223 is positioned at the bottom of the arcuate slot 241. The bearing surface formed above the adjusting wheel 223 extends to the bottom surface of the arcuate slot 241. When the first push rod 221 pushes the valve body 61 into the working area of ​​the arcuate slot 241, the outer circumference of the valve body 61 is radially constrained by the guide wheels on both sides, while the bottom is supported by the adjusting wheel 223 for stability. Furthermore, a sensor (such as a visual sensor or a photoelectric sensor) can be positioned above the assembly station 201 on the assembly column 21 to scan the circumferential surface profile of the valve body 61 in real time and transmit the scanned information to the control system. Specifically, When the valve body 61 enters the arc 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 difference in geometric features between the edge of the connecting hole and the main line of the valve body 61 (such as the light and dark transition area or contour concave feature formed by the chamfer of the connecting hole edge). The sensor feeds back the position data to the central control system, which compares the deviation value of the current connecting hole angle with 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 uses the friction torque between the adjusting wheel 223 and the bottom of the valve body 61 to push the valve body 61 to rotate. At the same time, the limiting 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 rotating. This closed-loop control system achieves angle correction accuracy, ensures that the connecting hole is always facing upward, and provides a core guarantee for the automatic alignment assembly of the connector 62.

[0046] 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 coordinated transportation of the joint member 62. The second push rod 253 is arranged to slide in the transition groove 252, and the second push rod 253 is initially located on the side of the second guide groove 23 away from the assembly station 201. The second guide groove 23 is in an inclined state, and 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 vibration disk where the connector 62 is placed to transport the connector 62, or it can also be placed and transported manually. The second vibration disk causes the connector 62 to move in a directional manner on the conveying track through high-frequency micro-vibration. After its vibration frequency and amplitude are precisely matched, the connector 62 is automatically corrected to a process posture with the axis vertical during movement by the combined action of the track limiting structure and centrifugal force, so that the connector 62 is transported to the second guide groove 23 in this posture, and is arranged in an orderly manner along the second guide groove 23 to enter the temporary storage area of ​​the transition groove 252 (that is, the area in the transition groove 252 connected to the second guide groove 23), and the second push rod 253 pushes the connector 62 one by one to the assembly station 201 according to the process rhythm.

[0047] Specifically, when the second push rod 253 performs reciprocating linear motion, it pushes the connector 62 located in the transition groove 252 to the arcuate groove 241 of the assembly station 201, causing the lower end of the connector 62 to fall into the connection hole of the valve body 61 located in the assembly station 201. When the second push rod 253 is reset, the subsequent connector 62 in the second guide groove 23 automatically fills the transition groove 252 under the action of gravity, forming a continuous and stable supply cycle of the connector 62. In addition, a pressure plate 254 is provided on the second push rod 253. One end of the pressure plate 254 extends outside 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 are fixed to the second push rod 253 with a clearance fit, allowing the pressure plate 254 to move up and down relative to the second push rod 253. When 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, prompting the connector 62 to be smoothly embedded in the connection hole of the valve body 61 to form an interference fit. The design of the floating pressure plate 254 not only ensures the balanced distribution of axial pressure to avoid deformation of the connector 62, but also realizes the pressure self-regulation function through the bolt clearance fit. The whole set of devices realizes the automated coordination of the conveying, positioning and pressing of the connector 62, significantly improving the assembly 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 is reset.

[0048] As attached Figure 9 and 10 As shown, the welding device 3 includes a rotating base 31, an ejector pin 32 and a welding gun 33. The welding gun 33 is arranged on one side of the rotating base 31 through the connection of a robotic arm. A recessed positioning groove 311 is provided on the upper surface of the rotating base 31. The rotating base 31 is arranged on the workbench 1 and rotates axially fixedly relative to the welding gun 33. Specifically, a first motor is fixed to the bottom of the table of the workbench 1, and the first motor drives the rotating base 31 to rotate. A support platform 34 is also fixed on the workbench 1. The ejector pin 32 is arranged at a position above the rotation axis centerline of the rotating base 31 corresponding to the support platform 34. The ejector pin 32 is driven by a cylinder fixed to the support platform 34 to perform vertical lifting relative to the rotating base 31, and the lower ends of the piston rods of the ejector pin 32 and the cylinder on the support platform 34 can be fixed to the bearing seat. The upper end of the ejector pin 32 is fixed to the inner ring of the bearing seat, so that the ejector pin 32 rotates axially fixedly relative to the piston rod of the cylinder on the support platform 34.

[0049] When the transfer device 5 moves the assembled assembly formed by the valve body 61 and the connector 62 from the assembly device 2 to the rotating seat 31, the valve body 61 is inserted into the positioning groove 311, the connector 62 remains facing upward, and the joint between the valve body 61 and the connector 62 is aligned with the welding position of the welding gun 33. The ejector pin 32 then presses down on the connector 62 to position the assembly formed by the valve body 61 and the connector 62 in the positioning groove 311, so that the assembly remains in a zero-displacement state during rotation. The rotating seat 31 rotates at a constant speed, driving the joint to move in a circular motion along the trajectory of the welding gun 33. The welding gun 33 performs melt welding on the continuously exposed joints, forming a welded product 6 with a full-circumference weld without dead angles.

[0050] As attached Figure 11 As shown, the gas testing device 4 includes a turntable 41, a fixed assembly 42 and a gas testing assembly 43. The turntable 41 is arranged in an axially fixed and rotating state on the workbench 1, and a second motor is fixed to the bottom of the table surface of the workbench 1, which drives the turntable 41 to rotate. On the workbench 1, a placement station 101, a cooling station 102, a gas testing station 103 and a discharge station 104 are arranged in sequence in the circumferential direction outside the turntable 41. Among them, the placement station 101 is set in the position where the clamping claw 52 of the transfer device 5 moves to a position parallel to the connecting line of the center of the turntable 41 and the side of the workbench 1, so that the clamping claw 52 can load the welded product 6 into the fixed assembly 42 by moving horizontally and then vertically. Four fixed assemblies 42 are distributed in a circular array on the turntable 41. The rotation of the turntable 41 drives each fixed assembly 42 to circulate through the placement station 101, the cooling station 102, the gas testing station 103 and the discharge station 104. The fixing assembly 42 is used to place and fix the finished welded product 6. After the finished welded product 6 is placed on a fixing assembly 42, the rotation of the turntable 41 can drive the fixing assembly 42 to move to the cooling station 102 to rest to release the residual stress after welding, move to the gas test station 103 to perform an air tightness test on the finished welded product 6 through the gas test assembly 43, and move to the discharge station 104 to automatically unload the tested finished welded product 6. This turntable 41 layout realizes the continuous operation of the inspection process through a circular conveying mode. The four fixing assemblies 42 form an uninterrupted inspection flow under the drive of the turntable 41, so that the processes of placing the finished welded product 6, welding cooling of the finished welded product 6, air tightness testing of the finished welded product 6 and unloading of the finished welded product 6 are seamlessly connected. The entire system can complete the full process inspection of four finished welded products 6 in a single cycle, thereby improving inspection efficiency.

[0051] As attached Figure 12As shown, the fixing assembly 42 adopts a modular fixture structure, specifically including a fixing platform 421 and a pressing cylinder 422. The fixing platform 421 is disposed within a frame 423, and both the fixing platform 421 and the frame 423 are fixed to the turntable 41. The pressing cylinder 422 is fixed to the frame 423, and the piston rod of the pressing cylinder 422 extends downwardly 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 finished weld 6 and moves longitudinally to place it on the fixing groove 4211, the piston rod of the pressing cylinder 422 presses downwardly against the connector 62 of the finished weld 6 located in the fixing groove 4211, sealing the upward opening of the connector 62, thereby fixing the finished weld 6 to the fixing groove 4211. Preferably, a rubber gland 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.

[0052] Please refer to the attached Figure 12 The fixing assembly 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 gas test assembly 43 includes a plug 431, which is fixed to the cylinder on the workbench 1 and drives the plug 431 to move relative to the turntable 41. The end face of the plug 431 is integrated with a pressure sensor and an air outlet. The plug 431 is also connected to the gas 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 to the fixing groove 4211, the plug 431 moves toward the fixed platform 421 to block the opening of one end of the valve body 61, and pushes the welded product 6 to the opening at the other end of the valve body 61 to be blocked by the baffle 424. Then, the piston rod of the pressing cylinder 422 is pressed downwardly toward the opening of the joint 62 of the welded product 6, thereby sealing the water inlet and outlet of the valve body 61 and the opening where the joint 62 connects to the valve core to prevent gas leakage. Then, a certain pressure of gas is filled into the finished welded part 6 through the gas pipe, and the pressure sensor is used to monitor the change of gas pressure. The air tightness of the angle valve is judged according to the pressure change. If the pressure drops quickly, it means that the angle valve has a leak and needs to be removed and re-welded.

[0053] The fixing groove 4211 is inclined downward toward the notch outside the rotating disk 41. Figure 1 and 2 The discharge station 104 is fixed with a discharge hopper 11, the lower end of which is tilted downward. When the turntable 41 rotates and drives the fixing assembly 42 to the discharge station 104, the fixing groove 4211 corresponds to the discharge hopper 11. At this time, the piston rod of the pressing cylinder 422 is lifted upward to make the welded product 6 lose pressure and slide down along the fixing groove 4211.

[0054] The present invention also provides a working method of the above device, which is as follows: Pressing steps: The valve body 61 is sequentially conveyed to the conveyor 26 ; the clamping assembly 27 is lowered by the lifting cylinder 273 to grab the valve body 61 on the conveyor 26 , and then translated to the top of the first guide groove 22 via the transverse slide 272 , releasing 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 groove 241 of the assembly station 201 until the end of the valve body 61 contacts the stop pin 282 outside the end of the arc groove 241 to complete the axial positioning; The centering pin 281 moves downward so that the end of its cone is inserted into the connecting hole of the valve body 61, and the connecting hole is automatically corrected to the plumb direction through the contact of the cone 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 friction torque to push the valve body 61 to rotate until the connecting hole is vertically upward. The connector 62 is oriented and arranged and transported to the second guide groove 23, and 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 connecting 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 in the connecting hole to form an interference fit, thereby obtaining a combination of the valve body 61 and the connector 62. Soldering steps: The transfer device 5 grips the assembled assembly and transfers it to the positioning groove 311 of the rotating seat 31 of the welding device 3, so that the valve body 61 is inserted into the positioning groove 311, and the joint between the valve body 61 and the connector 62 is aligned with the position of the welding torch 33; the ejector pin 32 presses down and fixes the connector 62, and the rotating seat 31 rotates at a constant speed to drive the assembly to rotate. The welding torch 33 performs full-circumference melting welding on the exposed joint to form the welded product 6; Welding finished product 6 inspection steps: The clamping claw 52 of the transfer device 5 moves laterally to align with the central axis of the turntable 41, and then moves longitudinally to load the welded product 6 into the fixing groove 4211 of the fixing assembly 42, so as to transfer the welded product 6 to the fixing table 421 located at the placement station 101; The turntable 41 drives the fixing assembly 42 to carry the welded products 6 through the cooling station 102 in sequence, and the welded joints are cooled by being left to stand in the cooling station 102 to release the welding stress. The plug 431 moves toward the fixing platform 421 and blocks the opening of one end of the valve body 61, pushing the welded product 6 so that the opening of the other end 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 filled into the welded product 6 through the air pipe of the plug 431, and the pressure sensor monitors the pressure changes in real time to determine the airtightness. At this point, the assembly, welding and testing of the valve body 61 and the connector 62 are completed; The welded product 6 that has passed the test is rotated to the discharge station 104 with the turntable 41, and the piston rod of the pressing cylinder 422 rises to release the fixation 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 automatic unloading. The unqualified welded product 6 is manually removed and reprocessed.

[0055] In the above method, after the transfer device 5 transfers the assembly, the stop pin 282 resets to release the blockage, 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 62 in the second guide groove 23 automatically moves into 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 circulation of angle valve components through the combined lateral and longitudinal motion of the transfer device 5. The entire method achieves continuous production of assembly positioning, precision welding, and closed-loop testing, ensuring process consistency and product quality stability, and is conducive to improving the production efficiency of angle valves.

[0056] The above is only a specific implementation of the present invention, but the design concept of the present invention is not limited to this. Any non-substantial changes to the present invention using this concept shall be deemed as an infringement of the protection scope of the present invention.

Claims

1. An angle valve welding device, characterized in that: The device includes: An assembly device comprising an assembly column, a first guide groove, and a transition groove; an assembly station is provided on the assembly column, the assembly station being connected to the first guide groove and the transition groove, and the installation height of the transition groove is set to be higher than the first guide groove; the first guide groove is used to convey the valve body to the assembly station, and the transition groove is used to convey the connector to the assembly station, so that the lower end of the connector slides into the connection hole of the valve body located at the assembly station; A welding device comprising a rotating seat, an ejector pin, and a welding gun; the welding gun is disposed on one side of the rotating seat, the rotating seat being fixedly rotatable relative to the welding gun axially, the ejector pin corresponding to the rotation axis of the rotating seat, and the ejector pin vertically rising and falling relative to the rotating seat, the rotating seat being provided with a recessed positioning groove; when the valve body is positioned in the positioning groove, the joint member is in an upward posture, and the joint between the valve body and the joint member is aligned with the welding position of the welding gun, and the welding gun welds the valve body and the joint member to form a welded product; A gas testing device, comprising a turntable, a fixed assembly, and a gas testing assembly, wherein the turntable is in an axially fixed rotating state, and a placement station, a cooling station, a gas testing station, and a discharge station are sequentially arranged circumferentially on the turntable. The gas testing assembly is used to test the air tightness of the finished welded product, and at least four fixed assemblies are distributed in an annular array on the turntable. The fixed assembly is used to place and fix the finished welded product, and the rotation of the turntable drives each fixed assembly to circulate through the placement station, the cooling station, the gas testing station, and the discharge station. A transfer device is provided, wherein the transfer device clamps the assembled valve body and connector from the assembling device to the welding device, and the transfer device clamps the welded product formed by the welding device to the gas testing device.

2. The device according to claim 1, wherein The assembly device also includes a centering pin, which is arranged at the assembly station and moves vertically relative to the assembly station. The lower end of the centering pin is a cone with a larger upper part and a smaller lower part. When the valve body is transported to the assembly station, the centering pin moves downward to be inserted into the connecting hole of the valve body.

3. The device according to claim 1 or 2, characterized in that The assembly device also includes a first push rod and a clamping assembly. The first push rod is arranged in the first guide groove, and the first push rod moves in the first guide groove. The clamping assembly clamps the valve body to the first guide groove, and the first push rod pushes the valve body to the assembly station by moving.

4. The device according to claim 3, characterized in that The assembly device also includes a conveyor, one end of which is connected to a first vibration plate on which the valve body is placed. The first vibration plate conveys the valve body to the conveyor, and the clamping assembly grabs the valve body from the conveyor to the first guide groove.

5. The device according to claim 3, characterized in that The assembly device also includes a second guide groove and a second push rod, the second guide groove is connected to one side of the transition groove, the second push rod is arranged to slide in the transition groove, and the second push rod is initially located on the side of the second guide groove away from the assembly station.

6. The device according to claim 1, wherein The transfer device includes a movable seat and a clamping claw. The movable seat is arranged on the same side of the assembling device, the welding device and the gas testing device, and the movable seat moves laterally and longitudinally relative to the assembling device, the welding device and the gas testing device. The clamping claw is arranged on the movable seat for clamping the valve body.

7. The device according to claim 1, wherein 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 to the fixing groove, the piston rod of the pressing cylinder presses downward onto the welded product located in the fixing groove.

8. The device according to claim 7, characterized in that The fixing assembly also includes a baffle, which is located at one end of the fixing groove close to the center of the turntable; the gas test assembly includes a plug, the end face of the plug is integrated with a pressure sensor and an air outlet, and the plug is also connected to the air source through an external air pipe to communicate with the air pipe and the air outlet; after the transfer device clamps the valve body of the welded product to the fixing groove, the plug moves toward the fixing table to block the opening at one end of the valve body, and pushes the opening at the other end 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.

9. The device according to claim 4, characterized in that: The assembly device also includes a sensing component, which includes limit plates arranged in mirror symmetry on both sides of the conveyor, and the two limit plates are located above the conveyor and move synchronously inward or outward relative to the conveyor to form an open or contracted state. A limit portion protruding toward the middle of the conveyor is provided at one end of the limit plate. When the two limit plates move toward the middle of the conveyor to a contracted state, the gap between the two limit portions is larger than the outer diameter of the small diameter end of the valve body and smaller 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 limit plate facing the conveyor, and the second sensor is integrated into the surface of the limit portion. The first sensor and the second sensor determine the direction of the valve body during transportation by detecting whether the valve body triggers it.

10. A method for operating the device according to any one of claims 1, 2, 4, 5, 6, 7, 8 and 9, characterized in that: The method is as follows, Pressing steps: The first guide groove pushes the valve body into the arc groove of the assembly station; the connector in the transition groove is pushed to the assembly station, and the connector falls into the connecting hole of the valve body to obtain a combination of the valve body and the connector; Soldering steps: The transfer device transfers 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 between the valve body and the connector is aligned with the welding gun position. Then, the ejector 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-circle welding on the exposed joint to form a welded product. Welding product inspection steps: The transfer device loads the finished weld product into the fixing assembly, so as to transfer the finished weld product to the fixing assembly located at the placement station in the gas testing device; The turntable drives the fixed assembly and the welded products carried by it to flow through the cooling station in sequence, and the welded joints of the welded products are cooled by being left stationary at the cooling station; The turntable drives the fixed component and the cooled finished welded product to flow through the gas testing station, and the gas testing component performs an air tightness test on the cooled finished welded product; The finished welded products that have passed the test are transferred to the discharging station along with the turntable and unloaded from the turntable, while the finished welded products that have failed the test are manually removed and reprocessed.

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