Solenoid valve automatic assembling and testing production line and method thereof

Abstract

The automatic assembling and testing production line comprises an assembling work station, a testing work station and a conveying line connected between the assembling work station and the testing work station. The assembly work station comprises a flow conveying frame, a tightening mechanism, a gasket assembly mechanism, an electromagnetic cover assembly mechanism, a nut screwing-in mechanism, a steering adjusting mechanism and a clamping and transferring mechanism. Wherein the tightening mechanism, the gasket assembling mechanism, the electromagnetic cover assembling mechanism, the nut screwing-in mechanism and the steering adjusting mechanism are sequentially arranged along one side of the assembly line conveying frame, and the clamping and transferring mechanism is arranged on the other side of the assembly line conveying frame; the testing work station comprises a first high-pressure air tightness testing mechanism, a low-pressure air tightness testing mechanism and a second high-pressure air tightness testing mechanism which are sequentially arranged in the conveying direction, and a taking and placing transferring mechanism is arranged above the first high-pressure air tightness testing mechanism, the low-pressure air tightness testing mechanism and the second high-pressure air tightness testing mechanism. According to the invention, the main parts of the solenoid valve can be automatically assembled, and the performance of the solenoid valve can be tested.

Description

Technical Field

[0001] The present invention relates to the technical field of automated production lines, and particularly to an automatic assembly and testing production line for solenoid valves and a method thereof. Background Art

[0002] As an important fluid control component, solenoid valves are widely used in various industries, such as in the oil circuit control of automobiles and the automatic addition control of reagents in chemical product processing, etc. The main components of a solenoid valve include a valve core body and a valve body. The valve core body is mainly composed of components such as a valve core, a sleeve, a magnetic core, and a coil. Since solenoid valves involve many components and have relatively high precision requirements, the integration degree of the automatic assembly production line for solenoid valves is relatively high. Currently, the production equipment for solenoid valve assembly generally has defects such as low efficiency, low concentration, and too many manual intervention links. Summary of the Invention

[0003] Aiming at the deficiencies of the prior art, the present invention provides an automatic assembly and testing production line for solenoid valves and a method thereof, which can complete the automatic assembly of the main components of solenoid valves and can perform performance testing on solenoid valves.

[0004] To achieve the above objectives, the present invention is realized through the following technical solutions: An automatic assembly and testing production line for solenoid valves includes an assembly workstation, a testing workstation, and a conveyor line connecting the two; the assembly workstation includes a flowing water conveyor rack, a tightening mechanism, a washer assembly mechanism, an electromagnetic cover assembly mechanism, a nut screwing-in mechanism, a steering adjustment mechanism, and a clamping and transferring mechanism; among them, the tightening mechanism, the washer assembly mechanism, the electromagnetic cover assembly mechanism, the nut screwing-in mechanism, and the steering adjustment mechanism are sequentially arranged along one side of the flowing water conveyor rack, and the clamping and transferring mechanism is arranged on the other side of the flowing water conveyor rack; the testing workstation includes a first high-pressure airtight testing mechanism, a low-pressure airtight testing mechanism, and a second high-pressure airtight testing mechanism arranged in sequence along the conveying direction, and a picking and placing transfer mechanism is arranged above the first high-pressure airtight testing mechanism, the low-pressure airtight testing mechanism, and the second high-pressure airtight testing mechanism.

[0005] Further, the tightening mechanism includes a tightening mounting frame, the tightening mounting frame is provided with a longitudinal movement module, the moving seat of the longitudinal movement module is provided with a valve stem tightening gun, and the conveying end of the valve stem tightening gun is provided with a valve stem tightening sleeve adapted to the valve stem; The washer assembly mechanism includes a washer assembly mounting frame, the washer assembly mounting frame is provided with a washer picking and placing movement module, the moving seat of the washer picking and placing movement module is provided with a washer picking and placing lifting cylinder, and the output end of the washer picking and placing lifting cylinder is provided with a washer pneumatic fixture; The electromagnetic cover assembly mechanism includes an electromagnetic cover assembly mounting frame, on which an electromagnetic cover picking and placing moving module is arranged. A moving seat of the electromagnetic cover picking and placing moving module is provided with an electromagnetic cover picking and placing lifting cylinder, and an output end of the electromagnetic cover picking and placing lifting cylinder is provided with an electromagnetic cover pneumatic fixture; The nut screwing mechanism includes a nut screwing mounting frame, on which a nut picking and placing transverse moving module is arranged. A moving seat of the nut picking and placing transverse moving module is provided with a nut picking and placing longitudinal moving module. A moving seat of the nut picking and placing longitudinal moving module is provided with a nut tightening gun, and a conveying end of the nut tightening gun is provided with a nut tightening sleeve adapted to the nut; A moving seat of the nut picking and placing transverse moving module is further provided with an extension frame, on which a stop rod is arranged, and a lower end of the stop rod is provided with a nut stop sleeve; Further, the steering adjustment mechanism includes a steering picking and placing lifting cylinder arranged on a fixing plate of the nut picking and placing transverse moving module. An output end of the steering picking and placing lifting cylinder is provided with a rotating motor, and an output end of the rotating motor is provided with a steering pneumatic fixture; The clamping and transferring mechanism includes a clamping mounting frame, a clamping X-axis moving module, and a clamping Y-axis moving module; The clamping X-axis moving module is arranged on the clamping mounting frame, the clamping Y-axis moving module is arranged on a moving seat of the clamping X-axis moving module, a moving seat of the clamping Y-axis moving module is provided with a clamping profile, and a plurality of groups of spaced clamping blocks are arranged along the length of the clamping profile. An operating end of the clamping block is provided with a clamping bayonet adapted to the valve body; A push plate is arranged at the end of the clamping profile.

[0006] Further, the assembly workstation further includes a valve body conveying line, a washer vibrating disk, an electromagnetic cover conveying line, a nut vibrating disk, a nut ejecting mechanism and a pushing and feeding mechanism supporting the nut vibrating disk, and a plurality of positioning cylinders cooperating with the clamping and transferring mechanism; The valve body conveying line is arranged on one side of an input end of the flowing water conveyor frame, the washer vibrating disk is arranged on one side of the washer assembly mechanism, the electromagnetic cover conveying line is arranged on one side of the electromagnetic cover assembly mechanism, the nut vibrating disk is arranged on one side of the nut screwing mechanism, the pushing and feeding mechanism is arranged between the input end of the flowing water conveyor frame and an output end of the valve body conveying line, and the plurality of positioning cylinders are arranged at intervals along the flowing water conveyor frame and on the opposite side of the clamping and transferring mechanism; The nut ejection mechanism includes a nut ejection mounting plate which is arranged on one side of the assembly line conveyor. A positioning seat is provided at the rear side of the nut ejection mounting plate. A groove communicating with the linear conveying track of the nut vibrating bowl is provided at the upper part of the positioning seat. A through hole penetrating the entire positioning seat is provided in the groove. A T-shaped ejector block is arranged in the through hole. A lever is further provided at the rear side of the nut ejection mounting plate. The lever is rotatably connected to the nut ejection mounting plate through a rotating shaft. Rollers are arranged at both ends of the lever. One roller of the lever abuts against the bottom of the T-shaped ejector block, and the other roller abuts against the output end of the ejecting air cylinder. A top block is arranged at the output end of the ejecting air cylinder. The ejecting air cylinder is arranged on the nut ejection mounting plate. A nut pneumatic clamp is provided at the front side of the nut ejection mounting plate. The clamping opening of the nut pneumatic clamp is above the nut ejection opening. The nut is clamped and fixed through the clamping opening of the nut pneumatic clamp. The pushing and feeding mechanism includes a pushing mounting frame which is provided with a pushing air cylinder. A pushing block is arranged at the conveying end of the pushing air cylinder. A positioning shaft is arranged at the output end of the positioning air cylinder. The working end of the positioning shaft penetrates through the side plate of the assembly line conveyor and cooperates with the clamping block to position the valve body.

[0007] Further, the conveyor line is provided with a corner pushing and feeding air cylinder, an oil quantity testing mechanism and a conveying stop mechanism. A corner pushing block is arranged at the output end of the corner pushing and feeding air cylinder. The oil quantity testing mechanism includes testing components symmetrically arranged on both sides of the conveyor line and a positioning and stopping component arranged in the advancing direction of the conveyor line. The testing component includes a testing mounting frame which is provided with a testing module and a pneumatic mechanism for driving the testing module to move forward. A testing shaft communicating with the pipeline of the valve body is arranged on the working surface of the testing module. The positioning and stopping component includes a stopping mounting frame which is provided with a stopping air cylinder. A stopping block is arranged at the output end of the stopping air cylinder. The conveying stop mechanism includes a conveying stop mechanism 1 before the process of the oil quantity testing mechanism and a conveying stop mechanism 2 before the process of the high-pressure airtight testing mechanism 1. The conveying stop mechanism includes a conveying stop air cylinder. A conveying stop rod is arranged at the output end of the conveying stop air cylinder.

[0008] Further, both the first high-pressure airtight test mechanism and the second high-pressure airtight test mechanism include a high-pressure test mounting frame. A high-pressure test transverse movement module is provided at the upper part of the high-pressure test mounting frame. Two sets of moving seats I are arranged on the moving slide rail of the high-pressure test transverse movement module. An electromagnetic valve mounting jig one is arranged on one of the moving seats I, and a high-pressure test module is arranged on the other moving seat I. The electromagnetic valve mounting jig one is provided with an electromagnetic valve placement station. A first high-pressure airtight test shaft communicated with the electromagnetic valve pipeline is arranged on the working surface of the high-pressure test module. An air source mounting plate I is arranged on the side of the high-pressure test mounting frame. A second high-pressure airtight test shaft is arranged on the air source mounting plate I. The working end of the second high-pressure airtight test shaft penetrates through the air source mounting plate I and extends into the electromagnetic valve placement station, and cooperates with the first high-pressure airtight test shaft to perform a high-pressure airtight test on the electromagnetic valve; a telescopic link structure I is provided. The telescopic link structure I is respectively connected to the side parts of the air source mounting plate I, the electromagnetic valve mounting jig one, and the high-pressure test module. Driven by the driving mechanism of the high-pressure test transverse movement module, the electromagnetic valve mounting jig one and the high-pressure test module move synchronously in the same direction.

[0009] Further, the low-pressure airtight test mechanism includes a low-pressure test mounting frame. A low-pressure test transverse movement module is provided at the upper part of the low-pressure test mounting frame. Two sets of moving seats II are arranged on the moving slide rail of the low-pressure test transverse movement module. An electromagnetic valve mounting jig two is arranged on one of the moving seats II, and a low-pressure test module is arranged on the other moving seat II. The electromagnetic valve mounting jig two is provided with an electromagnetic valve placement station. A first low-pressure airtight test shaft communicated with the electromagnetic valve pipeline is arranged on the working surface of the low-pressure test module. An air source mounting plate II is arranged on the side of the low-pressure test mounting frame. A second low-pressure airtight test shaft is arranged on the air source mounting plate II. The working end of the second low-pressure airtight test shaft penetrates through the air source mounting plate II and extends into the electromagnetic valve placement station, and cooperates with the first low-pressure airtight test shaft to perform a low-pressure airtight test on the electromagnetic valve; a telescopic link structure II is provided. The telescopic link structure II is respectively connected to the side parts of the air source mounting plate II, the electromagnetic valve mounting jig two, and the low-pressure test module. Driven by the driving mechanism of the low-pressure test transverse movement module, the electromagnetic valve mounting jig two and the low-pressure test module move synchronously in the same direction.

[0010] Further, the picking and placing transfer mechanism includes a picking and placing transfer mounting frame, a picking and placing X-axis movement module, and a picking and placing Y-axis movement module; the picking and placing transfer mounting frame is arranged on the moving seat of the picking and placing Y-axis movement module, the picking and placing X-axis movement module is arranged on the picking and placing transfer mounting frame, a picking and placing profile is arranged on the moving seat of the picking and placing X-axis movement module, and a first picking and placing transfer component, a second picking and placing transfer component, and a third picking and placing transfer component are sequentially arranged at intervals along the length of the picking and placing profile. The pick-and-place transfer component 1 includes a pick-and-place mounting plate 1. The pick-and-place mounting plate 1 is provided with a plurality of independently operating Z-axis movement modules. Each Z-axis movement module is provided with a pick-and-place component 1. The pick-and-place component 1 includes a pick-and-place cylinder 1 disposed on the moving seat of the Z-axis movement module. The output end of the pick-and-place cylinder 1 is provided with a pneumatic fixture 1; The pick-and-place transfer component 2 includes a pick-and-place mounting plate 2. The pick-and-place mounting plate 2 is provided with a plurality of pick-and-place components 2. The pick-and-place component 2 includes a pick-and-place cylinder 2 disposed on the pick-and-place mounting plate 2. The output end of the pick-and-place cylinder 2 is provided with a pneumatic fixture 2; The pick-and-place transfer component 3 includes a pick-and-place mounting plate 3. The pick-and-place mounting plate 3 is provided with a lateral movement module and a rotation module. A rack is disposed on the moving seat of the lateral movement module. The rotation module includes a rotation mounting seat disposed on the pick-and-place mounting plate 3. The rotation mounting seat is provided with a plurality of rotation components. The rotation component includes a rotation rod. The upper end of the rotation rod is provided with a gear meshing with the rack. The lower end of the rotation rod is provided with a connection block. The connection block is provided with a pick-and-place cylinder 3. The output end of the pick-and-place cylinder 3 is provided with a pneumatic fixture 3.

[0011] Further, the high-pressure airtight test mechanism 1, the low-pressure airtight test mechanism, and the high-pressure airtight test mechanism 2 are all provided with defective product rejection sliding plates, and defective product collection boxes corresponding to each sliding plate.

[0012] An automatic assembly and test method for solenoid valves includes the following steps: S1: Pre-assemble the valve stem onto the valve body. The valve body is conveyed to the input end of the flowing water conveyor rack through the valve body conveyor line. The push cylinder of the push material mechanism drives the push block to push the valve body into the flowing water conveyor rack; S2: The clamping and transfer mechanism grabs the valve body through the clamping bayonet of the clamp block, transfers it to the tightening mechanism. The longitudinal movement module drives the valve stem tightening gun to press down, and the valve stem tightening sleeve tightens the valve stem; S3: The washer vibrating disk conveys the washers to the washer assembly mechanism. The washer pick-and-place movement module drives the washer pneumatic fixture to grab the washers, and assembles the washers to the valve stem position of the valve body through the washer pick-and-place lifting cylinder; S4: The electromagnetic cover conveyor line conveys the electromagnetic covers to the electromagnetic cover assembly mechanism. The electromagnetic cover pick-and-place movement module drives the electromagnetic cover pneumatic fixture to grab the electromagnetic covers, and presses the electromagnetic covers onto the valve body through the lifting cylinder; S5: The nut vibrating disk cooperates with the nut ejection mechanism to send the nuts to the clamping mouth of the nut pneumatic fixture. The nut tightening gun adjusts its position through the lateral movement module and the longitudinal module, and the nut tightening sleeve screws the nuts into the valve body electromagnetic cover position; S6: The steering pick-and-place lifting cylinder drives the rotation motor to descend. The steering pneumatic fixture grabs the solenoid valve. The rotation motor drives the valve body to rotate to the direction required for testing, and then places it back on the flowing water conveyor rack; S7: Driven by the clamping and transfer mechanism, the pusher plate pushes the solenoid valve that has completed the direction reversal out of the assembly line conveyor and into the conveyor line; S8: The corner push cylinder drives the corner push block to push the solenoid valve towards the fuel quantity testing mechanism; S9: The stop cylinder of the positioning and stop component extends the stop block to fix the position of the solenoid valve. The pneumatic mechanism of the testing component drives the testing module to move forward, and the test shaft is connected to the solenoid valve pipeline to perform a fuel quantity test on it; The conveying stop mechanism orderly controls the solenoid valve to enter the fuel quantity test and the high-pressure airtight test through the stop rod; S10: The picking and placing transfer component 1 grabs the incoming solenoid valve through the pneumatic fixture 1 and places it on the solenoid valve installation jig 1 of the high-pressure airtight testing mechanism 1. The high-pressure test transverse movement module drives the cooperation of the high-pressure airtight test shaft 1 and the high-pressure airtight test shaft 2 to complete the high-pressure airtight test; S11: The picking and placing transfer component 2 transfers the solenoid valve that has completed step S10 to the solenoid valve installation jig 2 of the low-pressure airtight testing mechanism through the pneumatic fixture 2. The low-pressure test transverse movement module drives the cooperation of the low-pressure airtight test shaft 1 and the low-pressure airtight test shaft 2 to complete the low-pressure airtight test; S12: The picking and placing transfer component 2 transfers the solenoid valve that has completed step S11 to the high-pressure airtight testing mechanism 2 and repeats the high-pressure test process to ensure double high-pressure test coverage; S13: The picking and placing transfer component 3 grabs the solenoid valve that has completed step S12, and the transverse movement module drives the rack to drive the gear, and the rotating rod adjusts the angle of the solenoid valve. The pneumatic fixture 3 transfers the qualified product to the packaging line.

[0013] Compared with the prior art, the present invention has the following beneficial effects: Through the series design of the assembly workstation and the testing workstation, the full process automation of "assembly - testing" is realized, eliminating the efficiency loss caused by manual handling; The assembly workstation adopts a unilateral multi-station collaborative layout, and the 5 major assembly mechanisms are linearly arranged on one side of the assembly line conveyor. Cooperating with the clamping and transfer mechanism to straddle the picking and placing operation, it reduces the material turnover path; The testing workstation adopts a series design of high-pressure - low-pressure - high-pressure three-stage airtight testing, combined with the picking and placing transfer mechanism to straddle the picking and placing operation, and the testing efficiency is increased to 99.8%. Description of the Drawings

[0014] Figure 1 Shown is the three-dimensional structure diagram of the automatic assembly and testing production line for solenoid valves; Figure 2 Shown is the internal structure diagram of the assembly workstation and the testing workstation; Figure 3 Shown is the structure diagram of the execution mechanism of the assembly workstation; Figure 4 Shown is the structure diagram of the tightening mechanism; Figure 5 The structure diagram of the washer assembly mechanism is shown; Figure 6 The structure diagram of the electromagnetic cover assembly mechanism is shown; Figure 7 The structure diagram of the nut screwing-in mechanism is shown; Figure 8 The structure diagram of the steering adjustment mechanism is shown; Figure 9 The structure diagram of the clamping and transfer mechanism is shown; Figure 10 The structure diagram of the execution mechanism of the assembly workstation and the material conveying line is shown; Figure 11 The structure diagram of the nut ejection mechanism is shown; Figure 12 The structure diagram of the nut ejection mechanism is shown; Figure 13 The structure diagram of the pusher mechanism is shown; Figure 14 The structure diagram of the positioning cylinder is shown; Figure 15 The structure diagram of the corner pusher cylinder is shown; Figure 16 The structure diagram of the conveying line, the oil quantity testing mechanism, and the conveying stop mechanism is shown; Figure 17 The structure diagram of the execution mechanism of the testing workstation is shown; Figure 18 The structure diagrams of the high-pressure airtight testing mechanism I and the high-pressure airtight testing mechanism II are shown; Figure 19 The structure diagram of the low-pressure airtight testing mechanism is shown; Figure 20 The structure diagram of the pick-and-place transfer mechanism is shown; Figure 21 The structure diagram of the pick-and-place transfer component I is shown; Figure 22 The structure diagram of the pick-and-place transfer component II is shown; Figure 23 The structure diagram of the pick-and-place transfer component III is shown.

[0015] In the figure: 1. Assembly workstation; 3. Testing workstation; 4. Conveyor line; 11. Flow conveyor rack; 12. Tightening mechanism; 13. Washer assembly mechanism; 14. Electromagnetic cover assembly mechanism; 15. Nut screwing-in mechanism; 16. Steering adjustment mechanism; 17. Gripping and transfer mechanism; 18. Valve body conveyor line; 19. Washer vibrating bowl; 20. Electromagnetic cover conveyor line; 21. Nut vibrating bowl; 22. Nut ejection mechanism; 23. Pushing and feeding mechanism; 24. Positioning cylinder; 31a. High-pressure airtight testing mechanism I; 32. Low-pressure airtight testing mechanism; 31b. High-pressure airtight testing mechanism II; 33. Pick-and-place transfer mechanism; 34. Defective product rejection and sliding plate; 35. Defective product collection box; 41. Corner pushing and feeding cylinder; 42. Oil quantity testing mechanism; 43a. Conveyor stop mechanism I; 43b. Conveyor stop mechanism II; 121. Tightening mounting frame; 122. Longitudinal movement module; 123. Valve stem tightening gun; 124. Valve stem tightening sleeve; 131. Washer assembly mounting frame; 132. Washer pick-and-place movement module; 133. Washer pick-and-place lifting cylinder; 134. Washer pneumatic fixture; 141. Electromagnetic cover assembly mounting frame; 142. Electromagnetic cover pick-and-place movement module; 143. Electromagnetic cover pick-and-place lifting cylinder; 144. Electromagnetic cover pneumatic fixture; 151. Screw-in nut mounting frame; 152. Nut pick-and-place lateral movement module; 153. Nut tightening gun; 154. Nut tightening sleeve; 155. Extension frame; 156. Stop rod; 157. Nut stop sleeve; 161. Steering pick-and-place lifting cylinder; 162. Rotating motor; 163. Steering pneumatic fixture; 171. Gripping mounting frame; 172. Gripping X-axis movement module; 173. Gripping Y-axis movement module; 174. Gripping profile; 175. Clamping block; 1751. Clamping bayonet; 176. Pushing plate; 221. Nut ejection mounting plate; 222. Positioning seat; 2221. Groove; 2222. Through hole; 223. T-shaped ejector block; 224. Lever; 225. Rotating shaft; 226. Roller; 227. Ejecting cylinder; 228. Ejecting block; 229. Nut pneumatic fixture; 231. Pushing mounting frame; 232. Pushing cylinder; 233. Pushing block; 241. Positioning shaft; 311. High-pressure testing mounting frame; 312. High-pressure testing lateral movement module; 313. Moving seat I; 314. Solenoid valve mounting jig I; 315. High-pressure testing module; 316. High-pressure airtight testing shaft I; 317. Air source mounting plate I; 318. High-pressure airtight testing shaft II; 319. Expandable connecting rod structure I; 321. Low-pressure testing mounting frame; 322. Low-pressure testing lateral movement module; 323. Moving seat II; 324. Solenoid valve mounting jig II; 325. Low-pressure testing module; 326. Low-pressure airtight testing shaft I; 327. Air source mounting plate II; 328. Low-pressure airtight testing shaft II; 329. Expandable connecting rod structure II; 331. Pick-and-place transfer mounting frame; 332a. Pick-and-place X-axis movement module; 332b. Pick-and-place Y-axis movement module; 333. Pick-and-place profile; 334. Pick-and-place transfer component I;335a, Pick-and-place transfer component II; 335b, Pick-and-place transfer component II; 336, Pick-and-place transfer component III; 3341, Pick-and-place mounting plate I; 3342, Z-axis movement module; 3343a, Pick-and-place cylinder I; 3343b, Pneumatic fixture I; 3351, Pick-and-place mounting plate II; 3352, Pick-and-place cylinder II; 3353, Pneumatic fixture II; 3361, Pick-and-place mounting plate III; 3362, Lateral movement module; 3363, Rotation module; 3364, Rack; 3365, Rotation mounting base; 3366, Rotation rod; 3367, Gear; 3368, Connecting block; 3369, Pick-and-place cylinder III; 3370, Pneumatic fixture III; 421, Testing component; 422, Positioning and stopping component; 4211, Testing mounting bracket; 4212, Testing module; 4213, Pneumatic mechanism; 4214, Testing shaft; 4221, Stopping mounting bracket; 4222, Stopping cylinder; 4223, Stopping block.; Detailed implementation manner

[0016] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0017] Please refer to Figure 1-23As shown in the figure, the present invention provides a technical solution: an automatic assembly and testing production line for solenoid valves, including an assembly workstation 1, a testing workstation 3, and a conveyor line 4 connected between the two; the assembly workstation 1 includes a flowing water conveyor rack 11, a tightening mechanism 12, a washer assembly mechanism 13, an electromagnetic cover assembly mechanism 14, a nut screwing-in mechanism 15, a steering adjustment mechanism 16, and a clamping and transfer mechanism 17; among them, the tightening mechanism 12, the washer assembly mechanism 13, the electromagnetic cover assembly mechanism 14, the nut screwing-in mechanism 15, and the steering adjustment mechanism 16 are arranged in sequence along one side of the flowing water conveyor rack 11, and the clamping and transfer mechanism 17 is arranged on the other side of the flowing water conveyor rack 11; the testing workstation 3 includes a first high-pressure airtight testing mechanism 31a, a low-pressure airtight testing mechanism 32, and a second high-pressure airtight testing mechanism 31b arranged in sequence along the conveying direction, and a pick-and-place transfer mechanism 33 is arranged above the first high-pressure airtight testing mechanism 31a, the low-pressure airtight testing mechanism 32, and the second high-pressure airtight testing mechanism 31b. Through the series design of the assembly workstation 1 and the testing workstation 4, the full process automation of "assembly - testing" is realized, eliminating the efficiency loss caused by manual handling; the assembly workstation adopts a single-side multi-station collaborative layout, and the five assembly mechanisms are linearly arranged along one side of the flowing water conveyor rack. Cooperating with the clamping and transfer mechanism to straddle the pick-and-place operation, the material turnover path is reduced, and the assembly efficiency is greatly improved; the testing workstation adopts a series design of three-level airtight testing of high pressure - low pressure - high pressure, combined with the pick-and-place transfer mechanism 33 straddling the pick-and-place operation, and the testing efficiency is greatly improved.

[0018] Please refer to Figure 4 As shown in the figure, the tightening mechanism 12 includes a tightening mounting frame 121. The tightening mounting frame 121 is provided with a longitudinal movement module 122. The moving seat of the longitudinal movement module 122 is provided with a valve stem tightening gun 123. The conveying end of the valve stem tightening gun 123 is provided with a valve stem tightening sleeve 124 adapted to the valve stem. Through the tightening mechanism 12, the continuous operation of tightening and assembling the valve stem and the valve body is realized, and at the same time, the deviation of tightening and assembling the valve stem and the valve body caused by manual operation is avoided, significantly improving the assembly quality and efficiency; the longitudinal movement module 122 adopts a high-precision linear guide rail and servo motor / pneumatic drive to ensure the coaxiality of the valve stem tightening gun 123 during the downward movement process and the axis of the valve body.

[0019] Please refer to Figure 5As shown in the figure, the washer assembly mechanism 13 includes a washer assembly mounting frame 131. The washer assembly mounting frame 131 is provided with a washer picking and placing moving module 132. The moving seat of the washer picking and placing moving module 132 is provided with a washer picking and placing lifting cylinder 133. The output end of the washer picking and placing lifting cylinder 133 is provided with a washer pneumatic fixture 134. Through modular design and precise motion control, the washer assembly mechanism 13 significantly improves the washer assembly quality and efficiency. The washer picking and placing moving module 132 adopts a high-precision ball screw driven by a servo motor / pneumatic drive. The washer pneumatic fixture 134 adopts a split-type profiling jaw, which is embedded with a silica gel buffer layer, adapts to electromagnetic covers with different surface finishes, and the grasping success rate is >99.9%. By mechanically assembling the washers, continuous operation is achieved and the positioning accuracy is guaranteed, solving the problem of coaxiality deviation in traditional manual assembly.

[0020] Please refer to Figure 6 As shown in the figure, the electromagnetic cover assembly mechanism 14 includes an electromagnetic cover assembly mounting frame 141. The electromagnetic cover mounting frame 141 is provided with an electromagnetic cover picking and placing moving module 142. The moving seat of the electromagnetic cover picking and placing moving module 142 is provided with an electromagnetic cover picking and placing lifting cylinder 143. The output end of the electromagnetic cover picking and placing lifting cylinder 143 is provided with an electromagnetic cover pneumatic fixture 144. Through modular design and precise motion control, the electromagnetic cover assembly mechanism 14 significantly improves the electromagnetic cover assembly quality and efficiency. The electromagnetic cover picking and placing moving module 142 adopts a high-precision ball screw driven by a servo motor / pneumatic drive. The electromagnetic cover pneumatic fixture 144 adopts a split-type profiling jaw, which is embedded with a silica gel buffer layer, adapts to electromagnetic covers with different surface finishes, and the grasping success rate is >99.9%. By mechanically assembling the electromagnetic covers, continuous operation is achieved and the positioning accuracy is guaranteed, solving the problem of low efficiency in traditional manual assembly.

[0021] Please refer to Figure 7As shown in the figure, the nut screwing mechanism 15 includes a screwed-in nut mounting bracket 151. The screwed-in nut mounting bracket 151 is provided with a nut picking and placing transverse module 152. The moving seat of the nut picking and placing transverse module 152 is provided with a nut picking and placing longitudinal module 152. The moving seat of the nut picking and placing longitudinal module 152 is provided with a nut tightening gun 153. The conveying end of the nut tightening gun 153 is provided with a nut tightening sleeve 154 adapted to the nut. The moving seat of the nut picking and placing transverse module 152 is also provided with an extension bracket 155. The extension bracket 155 is provided with a stop rod 156. The lower end of the stop rod 156 is provided with a nut stop sleeve 157. The nut screwing mechanism 15 significantly improves the quality and efficiency of nut assembly onto the electromagnetic cover through modular design and precise motion control. The nut picking and placing transverse module 152 and the nut picking and placing longitudinal module 152 adopt high-precision linear guides and servo motor / pneumatic drive to realize the quick picking and placing of nuts, and at the same time ensure the accurate position of the nut screwed into the electromagnetic cover. The tightening gun 153 is integrated with a high-resolution torque sensor and a rotary encoder to realize torque-angle synchronous control, with a torque fluctuation of <±1%, while the fluctuation of the traditional electric wrench is ±5%. By mechanically assembling nuts, continuous operation is realized and the screwing accuracy is ensured, solving the problem of low efficiency in traditional manual assembly.

[0022] Please refer to Figure 8 As shown in the figure, the steering adjustment mechanism 16 includes a steering picking and placing lifting cylinder 161. The steering picking and placing lifting cylinder 161 is arranged on the fixing plate 158 of the nut picking and placing transverse module 152. The output end of the steering picking and placing lifting cylinder 161 is provided with a rotary motor 162. The output end of the rotary motor 162 is provided with a steering pneumatic clamp 163. The high-precision attitude adjustment of the solenoid valve is realized through the cooperation of the steering picking and placing lifting cylinder 161 and the rotary motor 162.

[0023] Please refer to Figure 9As shown in the figure, the clamping and transfer mechanism 17 includes a clamping mounting frame 171, a clamping X-axis movement module 172, and a clamping Y-axis movement module 173. The clamping X-axis movement module 172 is arranged on the clamping mounting frame 171, and the clamping Y-axis movement module 173 is arranged on the moving seat of the clamping X-axis movement module 172. The moving seat of the clamping Y-axis movement module 173 is provided with a clamping profile 174. Along its length, the clamping profile 174 is provided with multiple groups of clamping blocks 175 distributed at intervals. The working end of the clamping block 175 is provided with a clamping bayonet 1751, which is adapted to the valve body. A push plate 176 is arranged at the end of the clamping profile 174. The clamping X-axis movement module 172 and the clamping Y-axis movement module 173 adopt high-precision linear guides and servo motors / pneumatic drives to realize the nanoscale trajectory planning of the valve body transfer path. Five groups of clamping blocks 175 are evenly distributed on the clamping profile 174, and 5 valve bodies can be clamped simultaneously at one time. The adjustable spacing range is 50 - 200 mm, which ensures the synchronous transfer of multiple workpieces and greatly improves the efficiency. The push plate 176 is linked with the picking and placing actions of the clamping blocks 175. Through the lateral movement of the clamping X-axis movement module 172, the processed valve body is accurately pushed into the conveying line, avoiding the beat caused by manual intervention. There is no need to add a push plate drive mechanism. By being linked with the picking and placing actions, the solenoid valve with adjusted posture can be pushed away, realizing automatic unloading and eliminating the bottleneck of manual intervention.

[0024] Please refer to Figure 10 As shown in the figure, the assembly workstation 1 further includes a valve body conveying line 18, a washer vibrating bowl 19, an electromagnetic cover conveying line 20, a nut vibrating bowl 21, a nut ejecting mechanism 22 and a pushing and feeding mechanism 23 that are matched with the nut vibrating bowl 21, and multiple groups of positioning cylinders 24 that cooperate with the clamping and transfer mechanism 17. The valve body conveying line 18 is arranged on one side of the input end of the flowing water conveyor frame 11. The washer vibrating bowl 19 is arranged on one side of the washer assembly mechanism 13. The electromagnetic cover conveying line 20 is arranged on one side of the electromagnetic cover assembly mechanism 14. The nut vibrating bowl 21 is arranged on one side of the nut screwing mechanism 15. The pushing and feeding mechanism 23 is arranged between the input end of the flowing water conveyor frame 11 and the output end of the valve body conveying line 18. Multiple groups of positioning cylinders 24 are arranged at intervals along the flowing water conveyor frame 11 and are located on the opposite side of the clamping and transfer mechanism 17. Multiple groups of positioning cylinders 24 cooperate with the clamping blocks 175 on the clamping and transfer mechanism 17 to position the valve body. When the valve body completes the current process, the positioning shafts of multiple groups of positioning cylinders 24 retract, and the valve body is driven by the clamping blocks 175 to transfer. The positioning cylinders 24 are linked with the clamping blocks 175 to form a two-way clamping force field during the processing of the valve body, suppressing the displacement caused by vibration. The valve body conveying line 18, the washer vibrating bowl 19, the electromagnetic cover conveying line 20, and the nut vibrating bowl 21 adopt a distributed layout and are uniformly scheduled by a PLC to realize the synchronous feeding of multiple materials.

[0025] Please refer to Figure 11-12As shown in the figure, the nut ejection mechanism 22 includes a nut ejection mounting plate 221. The nut ejection mounting plate 221 is disposed on one side of the assembly line conveyor 11. A positioning seat 222 is provided at the rear side of the nut ejection mounting plate 221. An upper portion of the positioning seat 222 is provided with a groove 2221 communicating with the linear conveying track of the nut vibrating bowl 21. A through hole 2222 penetrating the entire positioning seat 222 is provided in the groove 2221. A T-shaped ejector block 223 is disposed in the through hole 2222. A lever 224 is further provided at the rear side of the nut ejection mounting plate 221. The lever 224 is rotatably connected to the nut ejection mounting plate 221 through a rotating shaft 225. Rollers 226 are provided at both ends of the lever 224. One roller 226 of the lever 224 abuts against the bottom of the T-shaped ejector block 223, and the other roller 226 abuts against the output end of the ejector cylinder 227. A top block 228 is provided at the output end of the ejector cylinder 227. The ejector cylinder 227 is disposed on the nut ejection mounting plate 221. A nut pneumatic clamp 229 is provided at the front side of the nut ejection mounting plate 221. A clamping port of the nut pneumatic clamp 229 is located above the nut ejection port. The nut is clamped and fixed through the clamping port of the nut pneumatic clamp 229. The positioning seat 222 and the groove 2221 are used to guide the nut to enter the predetermined position from the vibrating bowl. The T-shaped ejector block 223 in the through hole 2222 is driven by a lever mechanism to eject. Rollers are provided at both ends of the lever 224, which are respectively in contact with the T-shaped ejector block 223 and the top block 228. Such a design is used to amplify the stroke or force of the cylinder to achieve more precise control. The ejector cylinder 227 pushes the lever through the top block 228, and then drives the T-shaped ejector block 223 to eject the nut. The nut stop sleeve 157 prevents the nut from being ejected from the groove 2221 to ensure the stability of the nut during the ejection process. Then, the nut is clamped and fixed through the clamping port of the nut pneumatic clamp 229, so that the nut tightening gun 153 on the nut screwing mechanism 15 can quickly and accurately screw the nut.

[0026] Please refer to Figure 13 As shown in the figure, the pushing and feeding mechanism 23 includes a pushing mounting frame 231. A pushing cylinder 232 is provided on the pushing mounting frame 231. A pushing block 233 is provided at the conveying end of the pushing cylinder 232. The pushing and feeding mechanism 23 is used to push the valve body into the assembly line conveyor 11.

[0027] Please refer to Figure 14 As shown in the figure, a positioning shaft 241 is provided at the output end of the positioning cylinder 24. The working end of the positioning shaft 241 penetrates the side plate of the assembly line conveyor 11 and cooperates with the clamping block 175 to position the valve body. When the valve body completes the current process, the positioning shafts 241 of multiple groups of positioning cylinders 24 retract. Please refer to Figure 15-16 As shown in the figure, the conveying line 4 is provided with a corner pushing cylinder 41, an oil quantity testing mechanism 42, and a conveying stop mechanism. A corner pushing block 411 is provided at the output end of the corner pushing cylinder 41. The oil quantity testing mechanism 42 includes testing components 421 symmetrically arranged on both sides of the conveyor line 4, and a positioning and stopping component 422 arranged in the advancing direction of the conveyor line 4; the testing component 421 includes a testing mounting frame 4211, the testing mounting frame 4211 is provided with a testing module 4212, and a pneumatic mechanism 4213 for driving the testing module 4212 to move forward. The working surface of the testing module 4212 is provided with a testing shaft 4214 communicated with the valve body pipeline; the positioning and stopping component 422 includes a stopping mounting frame 4221, the stopping mounting frame 4221 is provided with a stopping cylinder 4222, and the output end of the stopping cylinder 4222 is provided with a stopping block 4223. The two sides of the testing components 421 synchronously drive the testing shafts 4214 through the pneumatic mechanism 4213 to apply symmetric pressure to eliminate the eccentric load deformation of the valve body caused by single-sided testing. The testing module 4212 integrates a pressure sensor to real-time feedback the oil pressure data and trigger dynamic adjustment of the pneumatic pressure. The stopping block 4223 functions to stop and position the solenoid valve to ensure the stability and accuracy of the oil quantity testing.

[0028] The conveying and stopping mechanism includes a conveying and stopping mechanism one 43a arranged before the process of the oil quantity testing mechanism 42, and a conveying and stopping mechanism two 43b arranged before the process of the high-pressure airtight testing mechanism one 31. The conveying and stopping mechanisms one 43a and 43b include a conveying and stopping cylinder 431, and the output end of the conveying and stopping cylinder 431 is provided with a conveying and stopping rod 432. By setting the conveying and stopping mechanism one 43a and the conveying and stopping mechanism two 43b, it is ensured that the solenoid valves enter the corresponding mechanisms for testing in an orderly manner.

[0029] Please refer to Figure 17-19As shown in the figure, both the high-pressure airtight test mechanism 31a and the high-pressure airtight test mechanism 31b include a high-pressure test mounting frame 311. A high-pressure test transverse movement module 312 is provided at the upper part of the high-pressure test mounting frame 311. Two groups of moving seats I 313 are arranged on the moving slide rails of the high-pressure test transverse movement module 312. An electromagnetic valve mounting fixture 314 is arranged on one of the moving seats I 313, and a high-pressure test module 315 is arranged on the other moving seat I 313. The electromagnetic valve mounting fixture 314 is provided with an electromagnetic valve placement station. A high-pressure airtight test shaft 316 communicating with the electromagnetic valve pipeline is arranged on the working surface of the high-pressure test module 315. An air source mounting plate I 317 is arranged on the side of the high-pressure test mounting frame 311. A high-pressure airtight test shaft 318 is arranged on the air source mounting plate I 317. The working end of the high-pressure airtight test shaft 318 penetrates through the air source mounting plate I 317 and extends into the electromagnetic valve placement station, and cooperates with the high-pressure airtight test shaft 316 to perform a high-pressure airtight test on the electromagnetic valve; a telescopic link structure I 319 is provided. The telescopic link structure I 319 is respectively connected to the sides of the air source mounting plate I 317, the electromagnetic valve mounting fixture 314 and the high-pressure test module 315. Driven by the driving mechanism of the high-pressure test transverse movement module 312, the electromagnetic valve mounting fixture 314 and the high-pressure test module 315 move synchronously in the same direction. The high-pressure airtight test shaft 316 and the high-pressure airtight test shaft 318 respectively apply high-pressure gas synchronously from the input / output ends of the electromagnetic valve to form a closed-loop pressure field, eliminating the micro-leakage of the sealing surface caused by single-sided pressure application. By setting the telescopic link structure I 319 to rigidly connect the electromagnetic valve mounting fixture 314 and the high-pressure test module 315, driven by the driving mechanism of the transverse movement module 312, synchronous movement in the same direction of the two workstations is achieved. The high-pressure test module 315 integrates a pressure sensor, a flowmeter and a temperature compensation module, and synchronously collects data on pressure decay, leakage flow and temperature drift.

[0030] Please refer to Figure 20As shown in the figure, the low-pressure airtight test mechanism 32 includes a low-pressure test mounting frame 321. A low-pressure test transverse movement module 322 is provided at the upper part of the low-pressure test mounting frame 321. Two sets of moving seats II 323 are arranged on the moving slide rails of the low-pressure test transverse movement module 322. An electromagnetic valve mounting fixture II 324 is provided on one of the moving seats II 323, and a low-pressure test module 325 is provided on the other moving seat II 323. The electromagnetic valve mounting fixture II 324 is provided with an electromagnetic valve placement station. A low-pressure airtight test shaft 326 communicating with the electromagnetic valve pipeline is arranged on the working surface of the low-pressure test module 325. An air source mounting plate II 327 is arranged on the side of the low-pressure test mounting frame 321. A low-pressure airtight test shaft 328 is provided on the air source mounting plate II 327. The working end of the low-pressure airtight test shaft 328 penetrates through the air source mounting plate II 327 and extends into the electromagnetic valve placement station, and cooperates with the low-pressure airtight test shaft 326 to perform a low-pressure airtight test on the electromagnetic valve. A telescopic link structure II 329 is provided. The telescopic link structure II 329 is respectively connected to the sides of the air source mounting plate II 327, the electromagnetic valve mounting fixture II 324, and the low-pressure test module 325. Driven by the driving mechanism of the low-pressure test transverse movement module 322, the electromagnetic valve mounting fixture II 324 and the low-pressure test module 325 move synchronously in the same direction. The low-pressure airtight test shaft 326 and the low-pressure airtight test shaft 328 respectively apply low-pressure gas from the inlet and outlet of the electromagnetic valve to form a "bidirectional balanced pressure field" to accurately test for micro-leakage. The low-pressure test module 325 integrates a micro-pressure sensor, a mass spectrometer interface, and a humidity compensation module to synchronously analyze the pressure decay, gas composition, and humidity effects. The moving modules on the high-pressure airtight test mechanism 31a, the low-pressure airtight test mechanism 32, and the high-pressure airtight test mechanism 31b adopt high-precision linear guides and servo motors / pneumatic drives.

[0031] Please refer to Figure 21 As shown in the figure, the picking and placing transfer mechanism 33 includes a picking and placing transfer mounting frame 331, a picking and placing X-axis movement module 332a, and a picking and placing Y-axis movement module 332b; the picking and placing transfer mounting frame 331 is arranged on the moving seat of the picking and placing Y-axis movement module 332b, the picking and placing X-axis movement module 332a is arranged on the picking and placing transfer mounting frame 331, and a picking and placing profile 333 is arranged on the moving seat of the picking and placing X-axis movement module 332a. Picking and placing transfer components I 334, picking and placing transfer components II (335a, 335b), and picking and placing transfer components III 336 are arranged at intervals along the length of the picking and placing profile 333. Please refer to Figure 22As shown in the figure, the pick-and-place transfer assembly 1 (334) includes a pick-and-place mounting plate 1 (3341). The pick-and-place mounting plate 1 (3341) is provided with a plurality of independently operating Z-axis movement modules 3342. Each Z-axis movement module 3342 is provided with a pick-and-place assembly 1 (3343). The pick-and-place assembly 1 (3343) includes a pick-and-place cylinder 1 (3343a) disposed on the moving base of the Z-axis movement module 3342. The output end of the pick-and-place cylinder 1 (3343a) is provided with a pneumatic fixture 1 (3343b). By providing a plurality of independently operating Z-axis movement modules 3342 in the pick-and-place transfer assembly 1 (334), and each Z-axis movement module 3342 is provided with a pick-and-place assembly 1 (3343), the pneumatic fixtures 1 (3343b) on the plurality of pick-and-place assemblies 1 (3343) can pick up and transfer the solenoid valves on the conveyor line one by one, or pick up and transfer them synchronously.

[0032] Please refer to Figure 23 As shown in the figure, the pick-and-place transfer assemblies 2 (335a, 335b) include a pick-and-place mounting plate 2 (3351). The pick-and-place mounting plate 2 (3351) is provided with a plurality of pick-and-place assemblies 2 (3352). The pick-and-place assembly 2 (3352) includes a pick-and-place cylinder 2 (3352) disposed on the pick-and-place mounting plate 2 (3351). The output end of the pick-and-place cylinder 2 (3352) is provided with a pneumatic fixture 2 (3353); Please refer to Figure 23 As shown in the figure, the pick-and-place transfer assembly 3 (336) includes a pick-and-place mounting plate 3 (3361). The pick-and-place mounting plate 3 (3361) is provided with a lateral movement module 3362 and a rotation module 3363. A rack 3364 is disposed on the moving base of the lateral movement module 3362. The rotation module 3363 includes a rotation mounting base 3365 disposed on the pick-and-place mounting plate 3 (3361). The rotation mounting base 3365 is provided with a plurality of rotation components. The rotation component includes a rotation rod 3366. The upper end of the rotation rod 3366 is provided with a gear 3367 meshing with the rack 3364. The lower end of the rotation rod 3366 is provided with a connection block 3368. The connection block 3368 is provided with a pick-and-place cylinder 3 (3369). The output end of the pick-and-place cylinder 3 (3369) is provided with a pneumatic fixture 3 (3370). By driving the rotation rod 3366 through the transmission of the rack 3364 and the gear 3367, the solenoid valve is rotated to meet the requirements of multi-angle sorting and packaging after testing.

[0033] The movement modules 122 on the pick-and-place transfer assembly 1 (334), the pick-and-place transfer assemblies 2 (335a, 335b), and the pick-and-place transfer assembly 3 (336) adopt high-precision linear guides and servo motors / pneumatic drives. Through the division of labor and cooperation of the pick-and-place transfer assembly 1 (334), the pick-and-place transfer assemblies 2 (335a, 335b), and the pick-and-place transfer assembly 3 (336), a fully automatic closed-loop process of high-voltage testing → low-voltage testing → secondary high-voltage testing → sorting and packaging is realized. The pneumatic fixtures in this embodiment are all integrated with pressure sensors, and the clamping force is automatically adjusted according to the weight of the object to be clamped to avoid overload damage or slipping.

[0034] Please refer to Figure 17 As shown, the high-pressure airtight test mechanism 31a, the low-pressure airtight test mechanism 32, and the high-pressure airtight test mechanism 31b are all provided with defective product rejection sliding plates 34, and defective product collection boxes 35 corresponding to each sliding plate.

[0035] An automatic assembly and test method for a solenoid valve includes the following steps: S1: Pre-assemble the valve stem onto the valve body. The valve body is conveyed to the input end of the flowing water conveyor rack 11 through the valve body conveyor line 18. The pushing cylinder 232 of the pushing material mechanism 23 drives the pushing block 233 to push the valve body into the flowing water conveyor rack 11; S2: The clamping and transferring mechanism 17 grabs the valve body through the clamping bayonet 1751 of the clamping block 175 and transfers it to the tightening mechanism 12. The longitudinal movement module 122 drives the valve stem tightening gun 123 to press down, and the valve stem tightening sleeve 124 tightens the valve stem; S3: The washer vibrating disk 19 conveys the washers to the washer assembly mechanism 13. The washer picking and placing movement module 132 drives the washer pneumatic clamp 134 to grab the washers, and the washer picking and placing lifting cylinder 133 assembles the washers to the valve stem position of the valve body; S4: The electromagnetic cover conveyor line 20 conveys the electromagnetic covers to the electromagnetic cover assembly mechanism 14. The electromagnetic cover picking and placing movement module 142 drives the electromagnetic cover pneumatic clamp 144 to grab the electromagnetic covers, and the lifting cylinder 143 presses the electromagnetic covers onto the valve body; S5: The nut vibrating disk 21 cooperates with the nut ejecting mechanism 22 to send the nuts to the clamping mouth of the nut pneumatic clamp 229. The nut tightening gun 153 adjusts its position through the transverse movement module 152 and the longitudinal module 152, and the nut tightening sleeve 154 screws the nuts into the electromagnetic cover position of the valve body; S6: The steering picking and placing lifting cylinder 161 drives the rotating motor 162 to descend. The steering pneumatic clamp 163 grabs the solenoid valve, and the rotating motor 162 drives the valve body to rotate to the direction required for testing, and then places it back on the flowing water conveyor rack 11; S7: Driven by the clamping and transferring mechanism 17, the pushing plate 176 pushes the solenoid valve that has completed the direction adjustment out of the flowing water conveyor rack 11 and into the conveyor line 4; S8: The corner pushing cylinder 412 drives the corner pushing block 413 to push the solenoid valve towards the oil quantity test mechanism 42; S9: The stop cylinder 4222 of the positioning and stopping component 422 extends the stop block 4223 to fix the position of the solenoid valve. The pneumatic mechanism 4213 of the test component 421 drives the test module 4212 to move forward, and the test shaft 4214 is connected to the solenoid valve pipeline to perform an oil quantity test on it; The conveying stop mechanism 1 (43a, 43b) orderly controls the solenoid valve to enter the oil quantity test and the high-pressure airtight test through the stop rod 432; S10: The pick-and-place transfer component 1 (334) grabs the incoming solenoid valve through the pneumatic fixture 1 (3343b) and places it on the solenoid valve installation jig 1 (314) of the high-pressure airtight test mechanism 1 (31a). The high-pressure test transverse movement module (312) drives the high-pressure airtight test shaft 1 (316) to cooperate with the high-pressure airtight test shaft 2 (318) to complete the high-pressure airtight test; S11: The pick-and-place transfer component 2 (335a) transfers the solenoid valve that has completed step S10 to the solenoid valve installation jig 2 (324) of the low-pressure airtight test mechanism (32) through the pneumatic fixture 2 (3353). The low-pressure test transverse movement module (322) drives the low-pressure airtight test shaft 1 (326) to cooperate with the low-pressure airtight test shaft 2 (328) to complete the low-pressure airtight test; S12: The pick-and-place transfer component 2 (335b) transfers the solenoid valve that has completed step S11 to the high-pressure airtight test mechanism 2 (31b) and repeats the high-pressure test process to ensure double high-pressure test coverage; S13: The pick-and-place transfer component 3 (336) grabs the solenoid valve that has completed step S12, and drives the rack (3364) to drive the gear (3367) through the transverse movement module (3362). The rotating rod (3366) adjusts the angle of the solenoid valve, and the pneumatic fixture 3 (3370) transfers the qualified product to the packaging line.

Claims

1. An automatic assembly and test production line for solenoid valves, comprising an assembly workstation (1), a test workstation (3), and a conveyor line (4) connected between the two, characterized in that: The assembly workstation (1) includes a flow conveyor rack (11), a tightening mechanism (12), a washer assembly mechanism (13), an electromagnetic cover assembly mechanism (14), a nut screwing-in mechanism (15), a steering adjustment mechanism (16), and a clamping and transfer mechanism (17); wherein, the tightening mechanism (12), the washer assembly mechanism (13), the electromagnetic cover assembly mechanism (14), the nut screwing-in mechanism (15), and the steering adjustment mechanism (16) are sequentially arranged along one side of the flow conveyor rack (11), and the clamping and transfer mechanism (17) is arranged on the other side of the flow conveyor rack (11); The test workstation (3) includes a first high-pressure airtight test mechanism (31a), a low-pressure airtight test mechanism (32), and a second high-pressure airtight test mechanism (31b) arranged in sequence along the conveying direction, and a pick-and-place transfer mechanism (33) is arranged above the first high-pressure airtight test mechanism (31a), the low-pressure airtight test mechanism (32), and the second high-pressure airtight test mechanism (31b).

2. The full-automatic assembly and test production line for solenoid valves according to claim 1, characterized in that The tightening mechanism (12) includes a tightening mounting frame (121), the tightening mounting frame (121) is provided with a longitudinal movement module (122), the moving seat of the longitudinal movement module (122) is provided with a valve stem tightening gun (123), and the conveying end of the valve stem tightening gun (123) is provided with a valve stem tightening sleeve (124) adapted to the valve stem; The washer assembly mechanism (13) includes a washer assembly mounting frame (131), the washer assembly mounting frame (131) is provided with a washer pick-and-place movement module (132), the moving seat of the washer pick-and-place movement module (132) is provided with a washer pick-and-place lifting cylinder (133), and the output end of the washer pick-and-place lifting cylinder (133) is provided with a washer pneumatic fixture (134); The electromagnetic cover assembly mechanism (14) includes an electromagnetic cover assembly mounting frame (141), the electromagnetic cover mounting frame (141) is provided with an electromagnetic cover pick-and-place movement module (142), the moving seat of the electromagnetic cover pick-and-place movement module (142) is provided with an electromagnetic cover pick-and-place lifting cylinder (143), and the output end of the electromagnetic cover pick-and-place lifting cylinder (143) is provided with an electromagnetic cover pneumatic fixture (144); The screw-in nut mechanism (15) includes a screw-in nut mounting bracket (151). The screw-in nut mounting bracket (151) is provided with a nut picking and placing transverse module (152). The moving seat of the nut picking and placing transverse module (152) is provided with a nut picking and placing longitudinal module (152). The moving seat of the nut picking and placing longitudinal module (152) is provided with a nut tightening gun (153). The conveying end of the nut tightening gun (153) is provided with a nut tightening sleeve (154) adapted to the nut. The moving seat of the nut picking and placing transverse module (152) is further provided with an extension bracket (155). The extension bracket (155) is provided with a stop rod (156). The lower end of the stop rod (156) is provided with a nut stop sleeve (157).

3. The automatic assembly and test production line of the solenoid valve according to claim 1, characterized in that The steering adjustment mechanism (16) includes a steering picking and placing lifting cylinder (161). The steering picking and placing lifting cylinder (161) is arranged on the fixed plate (158) of the nut picking and placing transverse module (152). The output end of the steering picking and placing lifting cylinder (161) is provided with a rotary motor (162). The output end of the rotary motor (162) is provided with a steering pneumatic fixture (163). The clamping and transferring mechanism (17) includes a clamping mounting bracket (171), a clamping X-axis moving module (172), and a clamping Y-axis moving module (173). The clamping X-axis moving module (172) is arranged on the clamping mounting bracket (171). The clamping Y-axis moving module (173) is arranged on the moving seat of the clamping X-axis moving module (172). The moving seat of the clamping Y-axis moving module (173) is provided with a clamping profile (174). Along its length, the clamping profile (174) is provided with multiple groups of spaced-apart clamping blocks (175). The working end of the clamping block (175) is provided with a clamping bayonet (1751), which is adapted to the valve body. The end of the clamping profile (174) is provided with a pushing plate (176).

4. The solenoid valve automatic assembly and test production line according to any one of claims 1-3, characterized in that The assembly workstation (1) further includes a valve body conveyor line (18), a washer vibrating bowl (19), an electromagnetic cover conveyor line (20), a nut vibrating bowl (21), a nut ejection mechanism (22) and a pushing and feeding mechanism (23) supporting the nut vibrating bowl (21), and multiple groups of positioning cylinders (24) cooperating with the clamping and transferring mechanism (17). The valve body conveyor line (18) is arranged on one side of the input end of the flowing water conveyor rack (11). The washer vibrating bowl (19) is arranged on one side of the washer assembling mechanism (13). The electromagnetic cover conveyor line (20) is arranged on one side of the electromagnetic cover assembling mechanism (14). The nut vibrating bowl (21) is arranged on one side of the screw-in nut mechanism (15). The pushing and feeding mechanism (23) is arranged between the input end of the flowing water conveyor rack (11) and the output end of the valve body conveyor line (18). The multiple groups of positioning cylinders (24) are arranged at intervals along the flowing water conveyor rack (11) and are located on the opposite side of the clamping and transferring mechanism (17). The nut ejection mechanism (22) includes a nut ejection mounting plate (221). The nut ejection mounting plate (221) is arranged on one side of the flow conveyor frame (11). A positioning seat (222) is provided at the rear side of the nut ejection mounting plate (221). A groove (2221) communicating with the linear conveying track of the nut vibrating bowl (21) is provided at the upper part of the positioning seat (222). A through hole (2222) penetrating the entire positioning seat (222) is provided in the groove (2221). A T-shaped ejector block (223) is arranged in the through hole (2222). A lever (224) is further provided at the rear side of the nut ejection mounting plate (221). The lever (224) is rotatably connected to the nut ejection mounting plate (221) through a rotating shaft (225). Rollers (226) are arranged at both ends of the lever (224). One roller (226) of the lever (224) abuts against the bottom of the T-shaped ejector block (223), and the other roller (226) abuts against the output end of the ejector cylinder (227). A top block (228) is arranged at the output end of the ejector cylinder (227). The ejector cylinder (227) is arranged on the nut ejection mounting plate (221). A nut pneumatic clamp (229) is arranged at the front side of the nut ejection mounting plate (221). The clamping port of the nut pneumatic clamp (229) is above the nut ejection port. The nut is clamped and fixed through the clamping port of the nut pneumatic clamp (229). The pushing and feeding mechanism (23) includes a pushing mounting frame (231). A pushing cylinder (232) is arranged on the pushing mounting frame (231). A pushing block (233) is arranged at the conveying end of the pushing cylinder (232). A positioning shaft (241) is arranged at the output end of the positioning cylinder (24). The working end of the positioning shaft (241) penetrates through the side plate of the flow conveyor frame (11) and cooperates with the clamping block (175) to position the valve body.

5. The solenoid valve automatic assembly and test production line according to claim 1, wherein, The conveying line (4) is provided with a corner pushing cylinder (41), an oil quantity testing mechanism (42) and a conveying stop mechanism. A corner pushing block (411) is arranged at the output end of the corner pushing cylinder (41). The oil quantity testing mechanism (42) includes test components (421) symmetrically arranged on both sides of the conveying line (4), and a positioning stop component (422) arranged in the advancing direction of the conveying line (4). The test component (421) includes a test mounting frame (4211). A test module (4212) and a pneumatic mechanism (4213) for driving the test module (4212) to move forward are arranged on the test mounting frame (4211). A test shaft (4214) communicating with the valve body pipeline is arranged on the working surface of the test module (4212). The positioning stop component (422) includes a stop mounting frame (4221). A stop cylinder (4222) is arranged on the stop mounting frame (4221). A stop block (4223) is arranged at the output end of the stop cylinder (4222). The conveying stop mechanism includes a first conveying stop mechanism (43a) provided before the oil quantity testing mechanism (42) process and a second conveying stop mechanism (43b) provided before the first high-pressure airtight testing mechanism (31) process. The conveying stop mechanism (43a, 43b) includes a conveying stop cylinder (431), and a conveying stop rod (432) is arranged at the output end of the conveying stop cylinder (431).

6. The solenoid valve automatic assembly and test production line according to claim 1, characterized in that Both the first high-pressure airtight testing mechanism (31a) and the second high-pressure airtight testing mechanism (31b) include a high-pressure testing mounting frame (311). A high-pressure testing transverse movement module (312) is arranged at the upper part of the high-pressure testing mounting frame (311). Two groups of moving seats I (313) are arranged on the moving slide rails of the high-pressure testing transverse movement module (312). A first solenoid valve mounting jig (314) is arranged on one of the moving seats I (313), and a high-pressure testing module (315) is arranged on the other moving seat I (313). The first solenoid valve mounting jig (314) is provided with a solenoid valve placing station. A first high-pressure airtight testing shaft (316) communicated with the solenoid valve pipeline is arranged on the working surface of the high-pressure testing module (315). An air source mounting plate I (317) is arranged at the side part of the high-pressure testing mounting frame (311). A second high-pressure airtight testing shaft (318) is arranged on the air source mounting plate I (317). The working end of the second high-pressure airtight testing shaft (318) penetrates through the air source mounting plate I (317) and extends into the solenoid valve placing station, and cooperates with the first high-pressure airtight testing shaft (316) to perform high-pressure airtight testing on the solenoid valve; a telescopic link structure I (319) is arranged. The telescopic link structure I (319) is respectively connected to the side parts of the air source mounting plate I (317), the first solenoid valve mounting jig (314) and the high-pressure testing module (315). Driven by the driving mechanism of the high-pressure testing transverse movement module (312), the first solenoid valve mounting jig (314) and the high-pressure testing module (315) move synchronously in the same direction.

7. The automatic assembly and testing production line of the solenoid valve according to claim 1, characterized in that The low-pressure airtight test mechanism (32) includes a low-pressure test mounting frame (321). A low-pressure test transverse movement module (322) is arranged at the upper part of the low-pressure test mounting frame (321). Two sets of moving seats II (323) are arranged on the moving slide rails of the low-pressure test transverse movement module (322). An electromagnetic valve mounting fixture II (324) is arranged on one of the moving seats II (323), and a low-pressure test module (325) is arranged on the other moving seat II (323). The electromagnetic valve mounting fixture II (324) is provided with an electromagnetic valve placement station. A low-pressure airtight test shaft I (326) communicated with the electromagnetic valve pipeline is arranged on the working surface of the low-pressure test module (325). An air source mounting plate II (327) is arranged on the side of the low-pressure test mounting frame (321). A low-pressure airtight test shaft II (328) is arranged on the air source mounting plate II (327). The working end of the low-pressure airtight test shaft II (328) penetrates through the air source mounting plate II (327) and extends into the electromagnetic valve placement station, and cooperates with the low-pressure airtight test shaft I (326) to conduct a low-pressure airtight test on the electromagnetic valve. A telescopic link structure II (329) is arranged. The telescopic link structure II (329) is respectively connected to the sides of the air source mounting plate II (327), the electromagnetic valve mounting fixture II (324), and the low-pressure test module (325). Driven by the driving mechanism of the low-pressure test transverse movement module (322), the electromagnetic valve mounting fixture II (324) and the low-pressure test module (325) move synchronously in the same direction.

8. The automatic assembly and test production line for solenoid valves according to claim 1, characterized in that, The picking and placing transfer mechanism (33) includes a picking and placing transfer mounting frame (331), a picking and placing X-axis movement module (332a), and a picking and placing Y-axis movement module (332b). The picking and placing transfer mounting frame (331) is arranged on the moving seat of the picking and placing Y-axis movement module (332b). The picking and placing X-axis movement module (332a) is arranged on the picking and placing transfer mounting frame (331). A picking and placing profile (333) is arranged on the moving seat of the picking and placing X-axis movement module (332a). Picking and placing transfer components I (334), picking and placing transfer components II (335a, 335b), and picking and placing transfer components III (336) are sequentially arranged at intervals along the length of the picking and placing profile (333). The picking and placing transfer component I (334) includes a picking and placing mounting plate I (3341). A plurality of independently operating Z-axis movement modules (3342) are arranged on the picking and placing mounting plate I (3341). A picking and placing component I (3343) is arranged on each Z-axis movement module (3342). The picking and placing component I (3342) includes a picking and placing cylinder I (3343a) arranged on the moving seat of the Z-axis movement module (3342). A pneumatic fixture I (3343b) is arranged at the output end of the picking and placing cylinder I (3343a). The second pick-and-place transfer component (335a, 335b) comprises a second pick-and-place installation plate (3351), the second pick-and-place installation plate (3351) is provided with a plurality of second pick-and-place components (3352), the second pick-and-place component (3352) comprises a second pick-and-place cylinder (3352) provided on the second pick-and-place installation plate (3351), and the output end of the second pick-and-place cylinder (3352) is provided with a second pneumatic clamp (3353); The pick-and-place transfer assembly (336) comprises a pick-and-place installation plate (3361), the pick-and-place installation plate (3361) is provided with a lateral moving module (3362) and a rotating module (3363), a moving seat of the lateral moving module (3362) is provided with a rack (3364), the rotating module (3363) comprises a rotating mounting seat (3365) provided on the pick-and-place installation plate (3361), the rotating mounting seat (3365) is provided on the pick-and-place installation plate (3361), and the rotating mounting seat (3365) is provided on the pick-and-place installation plate (3361). 65) is provided with a plurality of rotating components, the rotating components including a rotating rod (3366), the upper end of the rotating rod (3366) is provided with a gear (3367) meshing with the rack (3364), the lower end of the rotating rod (3366) is provided with a connecting block (3368), the connecting block (3368) is provided with a pick-up and release cylinder three (3369), and the output end of the pick-up and release cylinder three (3369) is provided with a pneumatic clamp three (3370).

9. The solenoid valve automatic assembly and test production line according to claim 1, characterized in that The high-pressure airtightness test mechanism 1 (31a), the low-pressure airtightness test mechanism (32), and the high-pressure airtightness test mechanism 2 (31b) are all provided with a defective product rejection sliding plate (34), and a defective product collection box (35) corresponding to each sliding plate.

10. An automatic assembly and testing method for a solenoid valve according to any one of claims 1-9, characterized in that, The steps include: S1: The valve stem is pre-assembled onto the valve body, and the valve body is transported to the input end of the water conveying rack (11) through the valve body conveying line (18). The pushing cylinder (232) of the pushing mechanism (23) drives the pushing block (233) to push the valve body into the water conveying rack (11); S2: The clamping and transferring mechanism (17) grabs the valve body through the clamping bayonet (1751) of the clamping block (175) and transfers it to the tightening mechanism (12). The longitudinal moving module (122) drives the valve stem tightening gun (123) to press down, and the valve stem tightening sleeve (124) tightens the valve stem. S3: The gasket vibrating plate (19) transports the gasket to the gasket assembly mechanism (13), the gasket pick-up and placement moving module (132) drives the gasket pneumatic clamp (134) to grab the gasket, and the gasket is assembled to the valve body valve stem position through the gasket pick-up and placement lifting cylinder (133); S4: the electromagnetic cover conveying line (20) conveys the electromagnetic cover to the electromagnetic cover assembly mechanism (14), the electromagnetic cover pick-up and placement moving module (142) drives the electromagnetic cover pneumatic clamp (144) to grab the electromagnetic cover, and the electromagnetic cover is pressed onto the valve body by the lifting cylinder (143); S5: The nut vibration plate (21) cooperates with the nut ejection mechanism (22) to send the nut to the clamping port of the nut pneumatic clamp (229), the nut tightening gun (153) adjusts the position through the transverse module (152) and the longitudinal module (152), and the nut tightening sleeve (154) screws the nut into the electromagnetic cover position of the valve body; S6: The steering pick-and-place lifting cylinder (161) drives the rotary motor (162) to descend. The steering pneumatic fixture (163) grabs the solenoid valve, and the rotary motor (162) drives the valve body to rotate to the direction required for testing, and then places it back on the return water conveyor rack (11). S7: The pusher plate (176), driven by the clamping and transfer mechanism (17), pushes the solenoid valve that has completed the direction reversal off the water conveyor rack (11) and into the conveyor line (4). S8: The corner pushing cylinder (412) drives the corner pushing block (413) to push the solenoid valve towards the oil quantity testing mechanism (42). S9: The stop cylinder (4222) of the positioning stop component (422) extends the stop block (4223) to fix the position of the solenoid valve. The pneumatic mechanism (4213) of the testing component (421) drives the testing module (4212) to move forward, and the testing shaft (4214) is connected to the solenoid valve pipeline to perform an oil quantity test on it. The conveying stop mechanism (43a, 43b) orderly controls the solenoid valve to enter the oil quantity test and the high-pressure airtight test through the stop rod (432). S10: The pick-and-place transfer component one (334) grabs the incoming solenoid valve through the pneumatic fixture one (3343b) and places it on the solenoid valve installation jig one (314) of the high-pressure airtight testing mechanism one (31a). The high-pressure test transverse movement module (312) drives the high-pressure airtight test shaft one (316) to cooperate with the high-pressure airtight test shaft two (318) to complete the high-pressure airtight test. S11: The pick-and-place transfer component two (335a) transfers the solenoid valve that has completed step S10 to the solenoid valve installation jig two (324) of the low-pressure airtight testing mechanism (32) through the pneumatic fixture two (3353). The low-pressure test transverse movement module (322) drives the low-pressure airtight test shaft one (326) to cooperate with the low-pressure airtight test shaft two (328) to complete the low-pressure airtight test. S12: The pick-and-place transfer component two (335b) transfers the solenoid valve that has completed step S11 to the high-pressure airtight testing mechanism two (31b) and repeats the high-pressure test process to ensure double high-pressure test coverage. S13: The pick-and-place transfer component three (336) grabs the solenoid valve that has completed step S12, and the transverse movement module (3362) drives the rack (3364) to drive the gear (3367), and the rotating rod (3366) adjusts the angle of the solenoid valve. The pneumatic fixture three (3370) transfers the qualified product to the packaging line.

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