Electromagnetic valve automatic assembly device

Abstract

The application discloses a kind of solenoid valve automatic assembly equipment, it is related to equipment technical field, including workbench and the carousel conveyor device being set on workbench, carousel conveyor device is provided with carrier, carrier includes first locating seat and second locating seat, second locating seat is rotatably provided with locating cylinder;Workbench is sequentially provided with pre-tightening station, valve body handling station and tightening station in the direction of transport of carousel conveyor device, pre-tightening station is provided with pre-tightening device for the elastic compression of the valve stem in locating cylinder and the screwing of locating cylinder to make the accurate positioning of valve stem into locating cylinder, valve body handling station is provided with valve body handling device for carrying the valve body on first locating seat to the valve body on second locating seat, and tightening station is provided with tightening device for the compression of the valve body on second locating seat and the screwing of locating cylinder to the valve stem in locating cylinder is screwed to the valve body.The application realizes the automatic assembly of solenoid valve, improves assembly qualified rate and assembly efficiency.

Description

Technical Field

[0001] This invention relates to the field of assembly equipment technology, and more specifically to an automatic assembly equipment for solenoid valves. Background Technology

[0002] The solenoid valve of a washing machine is an important component of the washing machine control system. Currently, the assembly of this solenoid valve is mainly done manually. Manual assembly is subject to many human factors. Among them, problems such as misalignment of the valve body and valve stem and incorrect tightening force are particularly prominent. Once a problem occurs, it will directly affect the assembly qualification rate of the solenoid valve. In addition, manual assembly also suffers from low assembly efficiency, which cannot meet customer needs. Summary of the Invention

[0003] In view of the above-mentioned defects in the existing technology, the present invention provides an automatic assembly equipment for solenoid valves, which realizes the automatic assembly of solenoid valves and improves the assembly qualification rate and assembly efficiency.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0005] An automatic assembly device for solenoid valves includes a workbench and a turntable conveyor mounted on the workbench. The workbench has a pre-tightening station, a valve body handling station, and a tightening station sequentially arranged along the conveying direction of the turntable conveyor. A pre-tightening device is provided at the pre-tightening station, a valve body handling device is provided at the valve body handling station, and a tightening device is provided at the tightening station. A carrier is mounted on the turntable conveyor, which is used to rotate and convey the carrier to each station. The carrier includes a first... The system includes a first positioning seat and a second positioning seat, wherein a positioning cylinder for positioning a valve stem is rotatably disposed within the second positioning seat; a pre-tightening device is used to elastically press the valve stem within the positioning cylinder and to screw the positioning cylinder to accurately position the valve stem within the positioning cylinder; a valve body transport device is used to transport the valve body from the first positioning seat to the second positioning seat; and a tightening device is used to press the valve body on the second positioning seat and to screw the positioning cylinder to screw the valve stem within the positioning cylinder onto the valve body so that the two are assembled into a solenoid valve.

[0006] The pre-tightening device includes a valve stem elastic pressing mechanism and a pre-tightening mechanism. The valve stem elastic pressing mechanism is used to elastically press down the valve stem. The pre-tightening mechanism includes a first moving module disposed on the workbench and a first electric screwing tool disposed on the first moving module. The first moving module is used to drive the first electric screwing tool to move horizontally and vertically. The first electric screwing tool is used to screw the positioning cylinder.

[0007] The valve body transport device includes a second moving module disposed on the workbench and a first clamping mechanism disposed on the second moving module. The second moving module is used to drive the first clamping mechanism to move horizontally and vertically, and the first clamping mechanism is used to clamp the valve body.

[0008] The tightening device includes a valve body pressing mechanism and a tightening mechanism. The valve body pressing mechanism is used to press down the valve body. The tightening mechanism includes a third moving module disposed on the worktable and a second electric screwing tool disposed on the third moving module. The third moving module is used to drive the second electric screwing tool to move vertically in a reciprocating linear motion. The second electric screwing tool is used to screw the positioning cylinder.

[0009] The workbench is also equipped with a visual inspection station, which is located between the pre-tightening station and the valve body handling station. The visual inspection station is equipped with a visual inspection device, which includes an ejection mechanism, a first visual inspection mechanism, and a second visual inspection mechanism. The ejection mechanism is used to eject the positioning cylinder in the second positioning seat so that the second visual inspection mechanism can perform visual inspection on the valve stem in the positioning cylinder. The first visual inspection mechanism is used to perform visual inspection on the valve body on the first positioning seat.

[0010] The visual inspection station is also equipped with a valve body dust removal device, which includes a sealing mechanism and a dust suction mechanism. The valve body has a main channel and a branch channel connected to the main channel. The branch channel is provided with a valve stem mounting hole that connects the branch channel to the outside. The sealing mechanism is used to seal the valve stem mounting hole, and the dust suction mechanism is used to connect to the main channel to remove dust from the inside of the valve body.

[0011] The workbench is equipped with a height detection station located downstream of the tightening station along the conveying direction of the turntable conveyor. The height detection station is equipped with a lifting and flipping device and a height detector. The lifting and flipping device includes a lifting drive component on the workbench and a clamping and flipping mechanism on the lifting drive component. The clamping and flipping mechanism is used to clamp the solenoid valve and flip it. The lifting drive component is used to drive the flipped solenoid valve vertically to the detection position of the height detector. The height detector is used to detect whether the assembly height of the solenoid valve is qualified.

[0012] The workbench is also equipped with a material unloading station. Along the conveying direction of the turntable conveyor, the material unloading station is located downstream of the height detection station. Two material unloading and handling devices are provided at the material unloading station. One material unloading and handling device is used to unload the solenoid valves that have passed the height detection, and the other material unloading and handling device is used to unload the solenoid valves that have failed the height detection.

[0013] The material handling device includes a fourth moving module on the workbench and a second clamping mechanism on the fourth moving module. The fourth moving module is used to drive the second clamping mechanism to move horizontally and vertically. The second clamping mechanism is used to clamp the solenoid valve to transport the solenoid valve to the qualified product conveyor or the waste product bin.

[0014] The workbench is also equipped with a carrier dust removal station. Along the conveying direction of the turntable conveyor, the carrier dust removal station is located downstream of the unloading station. The carrier dust removal station is equipped with a carrier dust removal device connected to a vacuum cleaner. The carrier dust removal device is used to remove dust from the empty carrier.

[0015] By adopting the above technical solution, the beneficial effects of the present invention are:

[0016] The automatic solenoid valve assembly equipment provided by this invention utilizes a turntable conveyor to rotate and transport the carrier to various workstations, achieving automated conveying. A pre-tightening device elastically presses the valve stem within the positioning cylinder, and the positioning cylinder is then tightened to accurately position the valve stem within it, achieving precise positioning of the valve stem. A first and second positioning seat position the valve body, achieving precise positioning of the valve body. A valve body transport device transports the valve body from the first positioning seat to the second positioning seat, achieving automatic transport of the valve body. A tightening device presses the valve body onto the second positioning seat, and the positioning cylinder is tightened to screw the valve stem within it onto the valve body, assembling the two into a solenoid valve, thus achieving automatic assembly of the solenoid valve. Compared with existing technologies, this automatic solenoid valve assembly equipment achieves automation, enabling faster, more stable, and more precise automatic assembly of solenoid valves. It avoids various assembly quality problems that occur during manual assembly, ensuring the consistency of solenoid valve assembly, improving the assembly qualification rate and efficiency, and meeting customer needs. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a solenoid valve body;

[0018] Figure 2 This is a schematic diagram of the valve stem of a solenoid valve;

[0019] Figure 3This is a schematic diagram of the structure of the automatic assembly equipment for solenoid valves of the present invention;

[0020] Figure 4 yes Figure 3 Schematic diagram of the transfer tray conveyor device;

[0021] Figure 5 yes Figure 3 Schematic diagram of the medium-sized vehicle;

[0022] Figure 6 This is a schematic diagram showing the positioning of the valve body and valve stem relative to the carrier;

[0023] Figure 7 yes Figure 3 Schematic diagram of the pre-tightening device;

[0024] Figure 8 yes Figure 3 Schematic diagram of the visual inspection device and valve body dust removal device;

[0025] Figure 9 yes Figure 3 Schematic diagram of the valve body handling device;

[0026] Figure 10 yes Figure 3 Schematic diagram of the tightening device;

[0027] Figure 11 yes Figure 3 Schematic diagram of the central lifting and tilting device and height detection instrument;

[0028] Figure 12 yes Figure 3 Schematic diagram of the material handling device;

[0029] Figure 13 yes Figure 3 Schematic diagram of the dust removal device for medium-sized vehicles;

[0030] In the diagram: 1. Workbench; 2. Turntable conveyor; 21. Turntable; 22. Photoelectric detection switch; 3. Pre-tightening device; 31. Valve stem elastic clamping mechanism; 32. Pre-tightening mechanism; 321. First moving module; 322. First electric tightening tool; 4. Valve body handling device; 41. Second moving module; 42. First clamping mechanism; 5. Tightening device; 51. Valve body clamping mechanism; 52. Tightening mechanism; 521. Third moving module; 522. Second electric tightening tool; 6. Carrier; 61. First positioning seat; 62. Second positioning seat; 63. Positioning cylinder; 7. Vision. Detection device; 71. Ejection mechanism; 72. First vision inspection mechanism; 73. Second vision inspection mechanism; 8. Valve body dust removal device; 81. Sealing mechanism; 82. Dust suction mechanism; 9. Lifting and turning device; 91. Lifting drive component; 92. Clamping and turning mechanism; 10. Height detector; 11. Unloading and handling device; 111. Fourth moving module; 112. Second clamping mechanism; 12. Qualified product conveyor; 13. Waste bin; 14. Carrier dust removal device; 15. Valve body; 150. Valve stem mounting hole; 151. Main channel; 152. Branch channel; 16. Valve stem. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely for explaining the present invention and are not intended to limit the present invention.

[0032] like Figure 1 and Figure 2 As shown, this embodiment discloses a solenoid valve for a washing machine, including a valve body 15 and four valve stems 16. The valve body 15 has a main channel 151 and a branch channel 152 connected to the main channel 151. The branch channel 152 is provided with four valve stem mounting holes 150 that communicate with the outside. The four valve stems 16 are respectively screwed into the corresponding valve stem mounting holes 150. To achieve automatic assembly of this solenoid valve, this embodiment discloses an automatic solenoid valve assembly device.

[0033] like Figures 3 to 13As shown, the automatic assembly equipment for solenoid valves includes a workbench 1 and a turntable conveyor 2 mounted on the workbench 1. The workbench 1 has a pre-tightening station, a valve body handling station, and a tightening station arranged sequentially along the conveying direction of the turntable conveyor 2. A pre-tightening device 3 is installed at the pre-tightening station, a valve body handling device 4 is installed at the valve body handling station, and a tightening device 5 is installed at the tightening station. A carrier 6 is mounted on the turntable conveyor 2, which is used to rotate and convey the carrier 6 to each station. The carrier 6 includes a first positioning seat 6 for positioning the valve body 15. 1. A second positioning seat 62, wherein a positioning cylinder 63 for positioning the valve stem 16 is rotatably disposed within the second positioning seat 62; a pre-tightening device 3 is used to elastically press the valve stem 16 within the positioning cylinder 63 and to screw the positioning cylinder 63 so that the valve stem 16 is accurately positioned within the positioning cylinder 63; a valve body transporting device 4 is used to transport the valve body on the first positioning seat 61 to the second positioning seat 62; a tightening device 5 is used to press the valve body 15 on the second positioning seat 62 and to screw the positioning cylinder 63 to screw the valve stem 16 within the positioning cylinder 63 onto the valve body 15 so that the two are automatically assembled into a solenoid valve.

[0034] This automatic assembly equipment for solenoid valves enables rapid, stable, and precise automatic assembly of solenoid valves, avoiding various assembly quality problems that occur during manual assembly. It not only ensures the consistency of solenoid valve assembly but also improves the assembly qualification rate and efficiency, thus meeting customer needs.

[0035] The turntable conveyor 2 in this embodiment includes a turntable 21 driven by a motor or pneumatic rotary platform. Multiple carriers 6 are fixedly mounted on the turntable 21, and multiple photoelectric detection switches 22, each corresponding to a carrier 6, are also mounted on the turntable 21. The photoelectric detection switches 22 are used to detect whether a valve body 15 is on a carrier 6. By setting up the turntable conveyor 2, not only can the carriers 6 be rotated and conveyed to various workstations, achieving automated conveying, but the turntable conveyor 2 also makes the entire equipment structure more compact, reducing the equipment's volume, saving space, improving the equipment's space utilization rate, and facilitating the spatial arrangement of the equipment.

[0036] The pre-tightening device 3 in this embodiment includes a valve stem elastic pressing mechanism 31 and a pre-tightening mechanism 32. The valve stem elastic pressing mechanism 31 is used to elastically press down the valve stem 16. The pre-tightening mechanism 32 includes a first moving module 321 disposed on the workbench 1 and a first electric screw-tightening tool 322 disposed on the first moving module 321. The first moving module 321 is used to drive the first electric screw-tightening tool 322 to move horizontally and vertically. The first electric screw-tightening tool 322 is used to screw the positioning cylinder 63. The pre-tightening device 3 uses the valve stem elastic pressing mechanism 31 to elastically press the valve stem 16 in the positioning cylinder 63, and the pre-tightening mechanism 32 to screw the positioning cylinder 63 so that the valve stem 16 in the positioning cylinder 63 is accurately positioned in the positioning cylinder 63. This achieves precise positioning of the valve stem 16 in the positioning cylinder 63 and makes full preparation for the precise assembly of the solenoid valve.

[0037] Specifically, the valve stem elastic clamping mechanism 31 includes a vertical telescopic cylinder mounted on the workbench 1 via a bracket and an elastic floating pressure head mounted on the vertical telescopic cylinder. The vertical telescopic cylinder is used to drive the elastic floating pressure head to move vertically in a reciprocating linear motion, and the elastic floating pressure head is used to press down the valve stem 16. The first moving module 321 includes a horizontal telescopic cylinder and a vertical telescopic cylinder with mutually perpendicular directions of movement. The horizontal telescopic cylinder is mounted on the workbench 1, and the vertical telescopic cylinder is mounted on the power output section of the horizontal telescopic cylinder. A mounting base is provided on the power output section of the vertical telescopic cylinder. The first electric turning tool 322 includes a motor mounted on the mounting base and a turning blade driven by the motor.

[0038] To further improve assembly efficiency, four elastic floating pressure heads are provided in this embodiment. When pressing down, the four elastic floating pressure heads press down on the four valve rods 16 respectively. At the same time, two sets of first electric screw-tightening tools 322 are provided. The screw-tightening blade of one set of first electric screw-tightening tools 322 is directly connected to its motor, and the screw-tightening blade of the other set of first electric screw-tightening tools 322 is connected to its motor through a belt drive mechanism. In use, the four valve rods 16 are arranged in pairs. The two sets of first electric screw-tightening tools 322 firstly pre-tighten one set of valve rods 16 simultaneously, and then simultaneously pre-tighten the other set of valve rods 16.

[0039] The valve body handling device 4 in this embodiment includes a second moving module 41 disposed on the workbench 1 and a first clamping mechanism 42 disposed on the second moving module 41. The second moving module 41 is used to drive the first clamping mechanism 42 to move horizontally and vertically, and the first clamping mechanism 42 is used to clamp the valve body 15. The valve body handling device 4 takes over the task of manual handling and loading, realizes the automatic handling of the valve body 15, and greatly improves the assembly efficiency.

[0040] Specifically, the second moving module 41 includes a horizontal linear electric cylinder mounted on the workbench 1 via a bracket and a vertical telescopic cylinder mounted on the horizontal linear electric cylinder. The first clamping mechanism 42 includes a pneumatic gripper mounted on the vertical telescopic cylinder. The pneumatic gripper is used to clamp or release the valve body 15. The horizontal linear electric cylinder is used to drive the clamped valve body 15 to move horizontally in a reciprocating linear motion, and the vertical telescopic cylinder is used to drive the clamped valve body 15 to move vertically in a reciprocating linear motion.

[0041] The tightening device 5 in this embodiment includes a valve body pressing mechanism 51 and a tightening mechanism 52. The valve body pressing mechanism 51 is used to press down the valve body 15. The tightening mechanism 52 includes a third moving module 521 disposed on the workbench 1 and a second electric tightening tool 522 disposed on the third moving module 521. The third moving module 521 is used to drive the second electric tightening tool 522 to perform vertical reciprocating linear motion. The second electric tightening tool 522 is used to tighten the positioning cylinder 63. The tightening device 5 presses the valve body 15 on the second positioning seat 62 through the valve body pressing mechanism 51, and tightens the positioning cylinder 63 through the tightening mechanism 52 to tighten the valve stem 16 onto the valve body 15 so that the two are automatically assembled into a solenoid valve, thereby realizing the automatic assembly of the solenoid valve.

[0042] Specifically, the valve body pressing mechanism 51 includes a vertical telescopic cylinder mounted on the workbench 1 via a bracket and a pressure head mounted on the vertical telescopic cylinder. The vertical telescopic cylinder is used to drive the pressure head to move vertically in a reciprocating linear motion, and the pressure head is used to press down the valve body 15. The third moving module 521 includes a vertical telescopic cylinder mounted on the workbench 1 via a bracket. The second electric screwing tool 522 is slidably mounted on the bracket via a slide rail and connected to the power output part of the telescopic cylinder. The vertical telescopic cylinder drives the second electric screwing tool 522 to move vertically in a reciprocating linear motion. The second electric screwing tool 522 is used to screw the positioning cylinder 63. Since the second electric screwing tool 522 is an outsourced component and is existing technology, it will not be described in detail here.

[0043] Since the solenoid valve in this embodiment has four valve stems 16, four sets of tightening devices 5 are provided in this embodiment. The four sets of tightening devices 5 are used to screw the corresponding valve stems 16 into the corresponding valve stem mounting holes 150 of the valve body 15.

[0044] In this embodiment, a visual inspection station is also provided on the workbench 1. The visual inspection station is located between the pre-tightening station and the valve body handling station. A visual inspection device 7 is provided at the visual inspection station. The visual inspection device 7 includes an ejection mechanism 71, a first visual inspection mechanism 72, and a second visual inspection mechanism 73. The ejection mechanism 71 is used to eject the positioning cylinder 63 in the second positioning seat 62 so that the second visual inspection mechanism 73 can perform visual inspection on the valve stem 16 in the positioning cylinder 63. The first visual inspection mechanism 72 is used to perform visual inspection on the valve body 15 on the first positioning seat 61. The visual inspection device 7 takes over the routine manual inspection tasks, avoiding false inspections and missed inspections that occur during manual inspection. This not only improves the accuracy of inspection but also greatly improves work efficiency.

[0045] Two sets of ejection mechanisms 71 are provided, each set of ejection mechanisms 71 corresponds to two positioning cylinders 63, and the two sets of ejection mechanisms 71 are symmetrically arranged on the support of the worktable 1.

[0046] Specifically, the ejection mechanism 71 includes a vertical telescopic cylinder mounted on a bracket and a top block mounted on the vertical telescopic cylinder; the first visual inspection mechanism 72 and the second visual inspection mechanism 73 both include a horizontal telescopic cylinder mounted on the worktable 1 via a bracket and a light source, as well as a visual camera mounted on the horizontal telescopic cylinder. The second visual inspection mechanism 73 performs visual inspection on the valve stem 16 from the side, and the first visual inspection mechanism 72 performs visual inspection on the valve body 15 from the top.

[0047] To ensure the cleanliness of the valve body 15, this embodiment also provides a valve body dust removal device 8 at the visual inspection station. The valve body dust removal device 8 includes a sealing mechanism 81 and a dust suction mechanism 82. The sealing mechanism 81 is used to seal the four valve stem mounting holes 150, and the dust suction mechanism 82 is used to connect to the main channel 151 to remove dust from the inside of the valve body 15.

[0048] To save space, in this embodiment, the sealing mechanism 81 and the ejection mechanism 71 are mounted on the same bracket. Specifically, the sealing mechanism 81 includes a vertical telescopic cylinder mounted on the bracket and a sealing box mounted on the vertical telescopic cylinder. The turntable 21 is provided with clearance holes at the positions corresponding to the first positioning seat 61 and the second positioning seat 62, respectively. The sealing box is used to seal the clearance holes corresponding to the first positioning seat 61, thereby achieving the sealing of the four valve stem mounting holes 150. The vacuuming mechanism 82 includes a horizontal telescopic cylinder mounted on the workbench 1 via the bracket and a suction head mounted on the horizontal telescopic cylinder and connected to the vacuum cleaner. The suction head is used to connect to the main channel 151 of the valve body 15.

[0049] In this embodiment, a height detection station is also provided on the workbench 1. Located downstream of the tightening station along the conveying direction of the turntable conveyor 2, the height detection station is equipped with a lifting and flipping device 9 and a height detector 10. The lifting and flipping device 9 includes a lifting drive component 91 mounted on the workbench 1 and a clamping and flipping mechanism 92 mounted on the lifting drive component 91. The clamping and flipping mechanism 92 clamps and flips the solenoid valve. The lifting drive component 91 drives the solenoid valve vertically to the detection position of the height detector 10. The height detector 10 detects whether the assembly height of the solenoid valve is qualified. The lifting and flipping device 9 and the height detector 10 take over the routine manual inspection tasks, avoiding false or missed inspections, improving not only the accuracy of the inspection but also significantly increasing work efficiency.

[0050] Specifically, the lifting drive 91 is preferably a pneumatic slide table mounted on the worktable 1 via a bracket. The clamping and flipping mechanism 92 includes a rotary cylinder mounted on the pneumatic slide table and a pneumatic gripper mounted on the rotary cylinder. The pneumatic gripper is used to clamp the assembled solenoid valve, the rotary cylinder is used to drive the clamped solenoid valve to flip 180°, and the pneumatic slide table is used to drive the solenoid valve to move to the detection position of the height detector 10. In this embodiment, the height detector 10 is preferably a laser 3D line scan detector in the prior art. Of course, other height detection devices can also be used, depending on the actual needs. This embodiment does not limit this.

[0051] In this embodiment, the workbench 1 is also equipped with a material unloading station. Along the conveying direction of the turntable conveyor 2, the material unloading station is located downstream of the height detection station. Two material unloading and conveying devices 11 are provided at the material unloading station. One material unloading and conveying device 11 is used to unload solenoid valves that have passed the height detection, and the other material unloading and conveying device 11 is used to unload solenoid valves that have failed the height detection. By setting up the material unloading and conveying devices 11, automatic unloading of solenoid valves is realized.

[0052] The material handling device 11 in this embodiment includes a fourth moving module 111 disposed on the workbench 1 and a second clamping mechanism 112 disposed on the fourth moving module 111. The fourth moving module 111 is used to drive the second clamping mechanism 112 to move horizontally and vertically. The second clamping mechanism 112 is used to clamp the solenoid valve to transport the solenoid valve to the qualified product conveyor 12 or the waste product bin 13.

[0053] Specifically, the fourth moving module 111 includes a linear electric cylinder mounted on the workbench 1 via a bracket and a pneumatic cylinder mounted on the linear electric cylinder. The second clamping mechanism 112 includes a pneumatic gripper mounted on the pneumatic cylinder. The pneumatic gripper is used to clamp the solenoid valve. The linear electric cylinder is used to drive the clamped solenoid valve to reciprocate horizontally in a linear motion, and the pneumatic cylinder is used to drive the clamped solenoid valve to reciprocate vertically in a linear motion.

[0054] In this embodiment, a carrier dust removal station is also provided on the workbench 1. Along the conveying direction of the turntable conveyor 2, the carrier dust removal station is located downstream of the unloading station. A carrier dust removal device 14 connected to a vacuum cleaner is provided at the carrier dust removal station. The carrier dust removal device 14 is used to remove dust from the empty carrier 6. By setting up the carrier dust removal device 14, automatic dust removal of the carrier 6 is achieved, ensuring the cleanliness of the carrier 6.

[0055] Specifically, the vehicle dust removal device 14 includes a vertical telescopic cylinder mounted on the workbench 1 via a bracket and a dust removal hood mounted on the vertical telescopic cylinder and connected to a vacuum cleaner. The vertical telescopic cylinder is used to drive the dust removal hood to move vertically back and forth. The dust removal hood covers the vehicle 6 and removes dust from the vehicle 6 under the action of the vacuum cleaner.

[0056] In this embodiment, the workbench 1 is also equipped with a loading station. The carrier 6, after being dusted by the carrier dust removal device 14, is rotated and transported to the loading station by the turntable conveyor 2. Then, the robot arm loads the carrier 6 at the loading station, and then the turntable conveyor 2 rotates and transports the carrier 6 carrying the valve body 15 and the valve stem 16 to each station.

[0057] The following is the assembly process of the automatic solenoid valve assembly equipment in this embodiment:

[0058] At the loading station, the robot arm loads the carrier 6 at the loading station, and then the turntable conveyor 2 rotates and transports the carrier 6, which carries the valve body 15 and the valve stem 16, to the pre-tightening station.

[0059] At the pre-tightening station, the valve stem 16 inside the positioning cylinder 63 is elastically pressed by the valve stem elastic clamping mechanism 31, and the positioning cylinder 63 is screwed by the pre-tightening mechanism 32 to make the valve stem 16 accurately positioned inside the positioning cylinder 63. Then, the carrier 6 carrying the valve body 15 and the valve stem 16 is rotated and transported to the visual inspection station by the turntable conveyor 2.

[0060] At the visual inspection station, the valve body 15 on the first positioning seat 61 is visually inspected by the first visual inspection mechanism 72; the positioning cylinder 63 in the second positioning seat 62 is ejected by the ejection mechanism 71, and the valve stem 16 in the positioning cylinder 63 is visually inspected by the second visual inspection mechanism 73. At this station, if both the valve body 15 and the valve stem 16 pass the inspection, the carrier 6 carrying both valve body 15 and valve stem 16 is rotated and transported to the valve body handling station by the turntable conveyor 2; if a defective valve body 15 and / or valve stem 16 is detected, the defective valve body 15 and / or valve stem 16 are directly removed by a robot (not shown in the figure), and the downstream process will not continue until the carrier 6 is rotated and transported to the loading station, where the robot replenishes the material for the next round of assembly.

[0061] At the valve body transport station, the first clamping mechanism 42, driven by the second moving module 41, transports the valve body 15 on the first positioning seat 61 to the second positioning seat 62. Then, the turntable conveyor 2 rotates and transports the carrier 6 carrying the valve body 15 and the valve stem 16 to the tightening station.

[0062] At the tightening station, the four tightening devices 5, via the rotary conveyor 2, respectively tighten the corresponding valve stems 16 into the corresponding valve stem mounting holes 150 of the valve body 15. During tightening, the valve body pressing mechanism 51 presses the valve body 15 on the second positioning seat 62, and the tightening mechanism 52 screws the positioning cylinder 63 to tighten the valve stems 16 onto the valve body 15. After the four valve stems 16 and the valve body 15 are assembled into a solenoid valve, the rotary conveyor 2 then rotates and transports the carrier 6 carrying the solenoid valve to the height detection station.

[0063] At the height detection station, the solenoid valve is first clamped by the clamping and flipping mechanism 92 of the lifting and flipping device 9. Then, the lifting drive component 91 of the lifting and flipping device 9 drives the clamping and flipping mechanism 92 and the clamped solenoid valve to move vertically to the detection position of the height detector 10. The clamping and flipping mechanism 92 then flips the solenoid valve 180°, and the height detector 10 checks whether the assembly height of the solenoid valve is qualified. After the inspection is completed, the lifting and flipping device 9 puts the inspected solenoid valve back onto the carrier 6, and then the turntable conveyor 2 rotates and transports the carrier 6 carrying the solenoid valve to the unloading station.

[0064] At the unloading station, the rotary conveyor 2 rotates and transports solenoid valves that have passed the height detection test, which are then unloaded by one unloading and transporting device 11, while the other unloading and transporting device 11 unloads solenoid valves that have failed the height detection test. During unloading, the second clamping mechanism 112, driven by the fourth moving module, transports the solenoid valves that have passed the height detection test to the qualified product conveyor 12 or the solenoid valves that have failed the height detection test to the waste product bin 13. After unloading is completed, the rotary conveyor 2 rotates and transports the empty carrier 6 to the carrier dust removal station.

[0065] At the carrier dust removal station, the carrier 6 is dusted by the carrier dust removal device 14, and then the empty carrier 6 after dust removal is rotated and transported to the loading station by the turntable conveyor device 2.

[0066] The above is only one embodiment of the automatic solenoid valve assembly equipment of the present invention; many other embodiments are not described here. In summary, the automatic solenoid valve assembly equipment of the present invention achieves automation, enabling faster, more stable, and more accurate automatic assembly of solenoid valves. It avoids various assembly quality problems that occur during manual assembly, ensuring the consistency of solenoid valve assembly, improving the assembly qualification rate and efficiency, and meeting customer needs.

[0067] This invention is not limited to the specific embodiments described above. Any modifications made by those skilled in the art based on the above concept without creative effort are within the scope of protection of this invention.

Claims

1. An automatic assembly device for solenoid valves, characterized in that, The device includes a workbench and a turntable conveyor mounted on the workbench. The workbench has a pre-tightening station, a valve body handling station, and a tightening station arranged sequentially along the conveying direction of the turntable conveyor. A pre-tightening device is provided at the pre-tightening station, a valve body handling device is provided at the valve body handling station, and a tightening device is provided at the tightening station. A carrier is mounted on the turntable conveyor, which is used to rotate and convey the carrier to each station. The carrier includes a first positioning seat and a second positioning seat for positioning the valve body. A positioning cylinder for positioning the valve stem is rotatably disposed within the second positioning seat. The pre-tightening device is used to elastically press the valve stem inside the positioning cylinder and to screw the positioning cylinder to accurately position the valve stem within the positioning cylinder. The valve body transport device is used to transport the valve body from the first positioning seat to the second positioning seat. The tightening device is used to press the valve body on the second positioning seat and to screw the positioning cylinder to screw the valve stem inside the positioning cylinder onto the valve body so that the two are assembled into a solenoid valve. The pre-tightening device includes a valve stem elastic clamping mechanism and a pre-tightening mechanism. The valve stem elastic clamping mechanism is used to elastically press down the valve stem. The pre-tightening mechanism includes a first moving module disposed on the workbench and a first electric screwing tool disposed on the first moving module. The first moving module is used to drive the first electric screwing tool to move horizontally and vertically. The first electric screwing tool is used to screw the positioning cylinder. The tightening device includes a valve body pressing mechanism and a tightening mechanism. The valve body pressing mechanism is used to press down the valve body. The tightening mechanism includes a third moving module disposed on the workbench and a second electric screwing tool disposed on the third moving module. The third moving module is used to drive the second electric screwing tool to move vertically reciprocating linearly. The second electric screwing tool is used to screw the positioning cylinder.

2. The automatic assembly equipment for solenoid valves according to claim 1, characterized in that, The valve body transport device includes a second moving module disposed on the workbench and a first clamping mechanism disposed on the second moving module. The second moving module is used to drive the first clamping mechanism to move horizontally and vertically, and the first clamping mechanism is used to clamp the valve body.

3. The automatic assembly equipment for solenoid valves according to claim 1, characterized in that, The workbench is also equipped with a visual inspection station, which is located between the pre-tightening station and the valve body handling station. The visual inspection station is equipped with a visual inspection device, which includes an ejection mechanism, a first visual inspection mechanism, and a second visual inspection mechanism. The ejection mechanism is used to eject the positioning cylinder in the second positioning seat so that the second visual inspection mechanism can perform visual inspection on the valve stem in the positioning cylinder. The first visual inspection mechanism is used to perform visual inspection on the valve body on the first positioning seat.

4. The automatic assembly equipment for solenoid valves according to claim 3, characterized in that, The visual inspection station is also equipped with a valve body dust removal device, which includes a sealing mechanism and a dust suction mechanism. The valve body has a main channel and a branch channel connected to the main channel. The branch channel is provided with a valve stem mounting hole that connects the branch channel to the outside. The sealing mechanism is used to seal the valve stem mounting hole, and the dust suction mechanism is used to connect to the main channel to remove dust from the inside of the valve body.

5. The automatic assembly equipment for solenoid valves according to claim 1, characterized in that, The workbench is also equipped with a height detection station. Along the conveying direction of the turntable conveyor, the height detection station is located downstream of the tightening station. The height detection station is equipped with a lifting and flipping device and a height detector. The lifting and flipping device includes a lifting drive component on the workbench and a clamping and flipping mechanism on the lifting drive component. The clamping and flipping mechanism is used to clamp the solenoid valve and flip it. The lifting drive component is used to drive the solenoid valve to move vertically to the detection position of the height detector. The height detector is used to detect whether the assembly height of the solenoid valve is qualified.

6. The automatic assembly equipment for solenoid valves according to claim 5, characterized in that, The workbench is also equipped with a material unloading station. Along the conveying direction of the turntable conveyor, the material unloading station is located downstream of the height detection station. Two material unloading and conveying devices are provided at the material unloading station. One of the material unloading and conveying devices is used to unload the solenoid valves that have passed the height detection, and the other material unloading and conveying device is used to unload the solenoid valves that have failed the height detection.

7. The automatic assembly equipment for solenoid valves according to claim 6, characterized in that, The material handling device includes a fourth moving module disposed on the workbench and a second clamping mechanism disposed on the fourth moving module. The fourth moving module is used to drive the second clamping mechanism to move horizontally and vertically. The second clamping mechanism is used to clamp the solenoid valve to transport the solenoid valve to the qualified product conveyor or the waste product bin.

8. The automatic assembly equipment for solenoid valves according to claim 6, characterized in that, The workbench is also equipped with a carrier dust removal station. Along the conveying direction of the turntable conveyor, the carrier dust removal station is located downstream of the unloading station. The carrier dust removal station is equipped with a carrier dust removal device connected to a vacuum cleaner. The carrier dust removal device is used to remove dust from the empty carrier.

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