Solenoid valve assembly production line

Abstract

The present invention discloses a solenoid valve assembly production line, which includes a conveying track, at least one assembly workstation and at least one detection workstation. The assembly workstations of the present invention include a first assembly workstation, a second assembly workstation, a third assembly workstation and a fourth assembly workstation. The first assembly workstation includes a magnetic core - support seat feeding station, an embedded cover crimping station, a magnetic core - support seat assembly station and a sleeve - valve core - support seat assembly station; the second assembly workstation includes a spring feeding section, a spring cap feeding section, a housing - coil feeding section and a protective cover feeding section. The third assembly workstation includes a circlip feeding section, a retaining plate feeding section and a movable valve body assembly station, and the fourth assembly workstation includes a crimping station and a flange assembly locking station. The solenoid valve assembly production line of the present invention has a high integration degree, and can complete the automatic assembly of the main components of the solenoid valve and can complete the performance detection of the solenoid valve.

Description

Technical Field

[0001] The present invention relates to the technical field of solenoid valve assembly machinery, and particularly relates to a solenoid valve assembly production line. Background Art

[0002] As an important fluid control component, the solenoid valve is widely used in various industries, such as the oil circuit control in automobiles and the automatic addition control of reagents in chemical product processing.

[0003] The main components of the solenoid valve include a spool body and a valve body. The spool body is mainly composed of components such as a spool, a sleeve, a magnetic core, and a coil. In addition, the solenoid valve also includes connecting components such as an embedded cover, a snap ring, and a flange. Since the solenoid valve involves many components and has high precision requirements for the solenoid valve, the integration requirements for the automatic assembly production line of the solenoid valve are relatively high. At present, the production equipment for solenoid valve assembly generally has defects such as low efficiency, low concentration, and too many links that require manual intervention. Summary of the Invention

[0004] In order to solve the above technical problems, the present invention provides a solenoid valve assembly production line with high integration, which can complete the automatic assembly of the main components of the solenoid valve and can complete the performance detection of the solenoid valve.

[0005] The solenoid valve assembly production line of the present invention includes a conveying track, at least one assembly workstation, and at least one detection workstation. The assembly workstation is used to realize the automatic assembly of the spool body and can realize the automatic assembly of the spool body and the valve body. The spool body is assembled from a magnetic core, an embedded cover, a support seat, a spool, a sleeve retainer, a sleeve, a spring, a coil, a housing, and a protective cover. Using the solenoid valve assembly production line of the present invention can realize the automatic assembly of the key components of the solenoid valve, greatly improving the assembly production efficiency of the solenoid valve, and by setting up a detection workstation, the integration of the production line is improved.

[0006] Furthermore, the assembly workstation includes a first assembly workstation, a second assembly workstation, a third assembly workstation, and a fourth assembly workstation. The first assembly workstation is used for the assembly of the magnetic core, the embedded cover, the support seat, the spool, the sleeve, and the retainer. The second assembly workstation is used for the assembly of the sleeve, the spring, the coil, the housing, and the protective cover. The third assembly workstation is used for the assembly of the valve body, the snap ring, the damping piston, and the guide sleeve. The fourth assembly workstation is used to fix the valve body and the spool body through a flange. Therefore, using the automatic assembly production line of the present invention, the assembly of the solenoid valve can be completed with four assembly workstations, and the assembly efficiency of the solenoid valve is high.

[0007] Further, the first assembly workstation includes a magnetic core - support base loading station, an embedded cover crimping station, a magnetic core - support base assembly station, and a sleeve - valve core - support base assembly station; it further includes a magnetic core opening direction detection part and a support base flipping part. The magnetic core opening direction detection part includes a magnetic core gauge, and a detection head capable of clamping one end of the magnetic core is arranged on the magnetic core gauge. The support base flipping part includes a rotatable support base suction head. The sleeve - valve core - support base assembly station includes a valve core - sleeve fitting part, a retaining plate crimping part, and a manipulator. The manipulator includes a clamping claw and a suction head located at one end close to the object to be clamped. The valve core - sleeve fitting part includes a valve core feeding tray, a sleeve feeding tray, a fitting pipe body, and a first lifting oil cylinder located below the fitting pipe body. The inner diameter of the fitting pipe body is larger than the outer diameters of the valve core and the sleeve. The retaining plate crimping part is used to press a retaining plate into one end of the sleeve to obtain a sleeve assembly, and the manipulator can press the sleeve assembly into the support base.

[0008] Further, a sleeve assembly crimping part for crimping the sleeve and the support base is also provided on the conveying track between the first assembly workstation and the second assembly workstation. The sleeve assembly crimping part includes a crimping frame arranged on the conveying track, and at least one pressing cylinder is further arranged on the crimping frame. The push rod of the pressing cylinder extends towards the sleeve assembly passing through the crimping frame. Thus, when the sleeve assembly passes through the crimping frame along the conveying track, it is pressed again by the pressing cylinder.

[0009] Further, the magnetic core - support base assembly station includes a floating centering head for crimping the support base. A crimping edge is arranged on one side of the floating centering head that is in contact with the support base. The edge of the crimping edge has a chamfer structure. A through - hole for the magnetic core to pass through is arranged through the middle of the floating centering head, and the diameter of the through - hole gradually decreases from top to bottom. Thus, the solenoid valve assembled by the production line of the present invention has high precision, and scratches on the magnetic core and support base of the solenoid valve are avoided.

[0010] Further, the second assembly workstation includes a spring feeding section, a spring cap feeding section, a housing-coil feeding section, and a protective cover feeding section. The spring feeding section includes a spring distributor, a spring feeding pipe connected to the spring distributor, a spring distribution plate, and a spring cutting block. A spring cutting groove through which the spring cutting block passes is provided on the spring distribution plate. The spring cutting block can reciprocate within the spring cutting groove. A first channel communicating with the spring feeding pipe is provided on the spring distribution plate, and a second channel communicating with the spring discharge port is also provided on the spring distribution plate. A spring discharge groove capable of communicating with the first channel and the second channel respectively is provided on the spring cutting block. The protective cover feeding section includes a protective cover vibrating bowl and a protective cover linear vibrating track. A protective cover cutting plate is provided at the end of the protective cover linear vibrating track, and a translation cylinder for clamping the protective cover into the housing is also included.

[0011] Further, the spring cap feeding section includes a spring cap cutting plate, and a ejector rod passing through the spring cap cutting plate. A spring cap detection probe is provided at a position higher than the upper end of the ejector rod.

[0012] Further, a vertically movable detection rod is also provided above the second channel of the spring distribution plate. An indicating block is provided at the upper end of the detection rod, and a groove type inductor for detecting the position of the indicating block is also included. The housing-coil feeding section further includes a sleeve direction guiding mechanism. The sleeve direction guiding mechanism includes a sleeve direction guiding groove that can rotate driven by a rotating motor, and a detection head that can extend towards the sleeve direction guiding groove.

[0013] Further, the third assembly workstation includes a circlip feeding section, a retaining piece feeding section, and a movable valve body assembly station. The circlip feeding section includes a circlip guiding pipe, a circlip feeding plate, and a circlip retaining plate. A circlip receiving groove capable of accommodating a single circlip is provided on the circlip feeding plate. A spring for limiting the circlip retaining plate to abut against the circlip guiding pipe, and a driving device for driving the circlip feeding plate to move are also included. A detection groove communicating with the receiving groove is also provided on the circlip feeding plate, and a detection probe for detecting whether there is a circlip in the receiving groove is provided in the detection groove. The retaining piece feeding section includes a circlip clamping assembly. The circlip clamping assembly includes a floating cylinder and a circlip clamping jaw for clamping the circlip. A centering assembly for guiding the valve body to be assembled is also provided at the valve body assembly station. The centering assembly includes a centering sleeve and a centering cylinder for driving the centering sleeve to move up and down. Therefore, the circlip can be discharged stably and orderly under the cooperation of the circlip feeding plate and the circlip retaining plate. In addition, under the action of the floating cylinder and the centering assembly, the circlip can smoothly enter the valve body and can ensure coaxiality with the mounting hole on the valve body where the circlip needs to be inserted.

[0014] Furthermore, the snap ring feeding part further includes a positioning tongue and a positioning slide rail that can extend towards the snap ring. A groove through which the positioning tongue can pass is provided on the snap ring baffle. It also includes a positioning cylinder for driving the movement of the positioning tongue. The positioning tongue is arranged on the positioning slide rail and can slide along the positioning slide rail. The positioning slide rail is perpendicular to the moving direction of the snap ring baffle. Therefore, the opening direction of the snap ring is corrected to ensure high processing accuracy of the solenoid valve.

[0015] Furthermore, the fourth assembly workstation is used to assemble the valve core body and the valve body obtained through the second assembly workstation. The fourth assembly workstation includes a crimping station and a flange assembly and locking station. The fourth assembly workstation includes an O-ring installation unit, a valve core body pressing unit, and a flange installation unit. The O-ring installation unit includes at least one O-ring installation station. An O-ring supply tray, an O-ring socket rod that can swing towards or away from the O-ring supply tray, and a third rotary cylinder for driving the rotation of the O-ring socket rod are provided at each O-ring installation station. The valve core body pressing unit includes a valve core body feeding part, a valve core body flipping part, and a valve body crimping part for pressing the valve core body into the valve body. The valve body crimping part is arranged at the crimping station. The valve core body pressing unit further includes a valve core body guiding part adjacent to the crimping station. The valve core body guiding part includes a clamping groove that can move towards or away from the valve core body located at the crimping station. The pins of the valve core body can be clamped into the clamping groove. The flange installation unit includes a flange feeding part, a screw feeding part, and a screw locking part. The flange feeding part includes a second jaw that can clamp the flange. The second jaw can move the flange to the flange assembly and locking station of the second turntable. The screw feeding part is connected to the screw locking part. The screw locking part includes an automatic screw gun that can move to the flange assembly and locking station of the second turntable. The automatic screw gun is movable. Therefore, the fourth assembly workstation of the present invention can automatically socket the O-ring on the valve core body and automatically assemble the valve core body and the valve body, greatly improving the assembly efficiency of the solenoid valve.

[0016] Furthermore, it further includes a vacuum oil immersion workstation and a blanking workstation. The vacuum oil immersion workstation is used to immerse the assembled solenoid valve in oil and then evacuate it. The blanking workstation is used to clean and discharge the solenoid valve after assembly and detection. Brief Description of the Drawings

[0017] Figure 1 It is a top view structural schematic diagram of a preferred embodiment of the present invention;

[0018] Figure 2 It is an exploded structural schematic diagram of the solenoid valve assembled by the solenoid valve assembly production line of the present invention;

[0019] Figure 3Schematic perspective view of the first assembly workstation of a preferred embodiment of the present invention when the housing is removed;

[0020] Figure 4 Schematic perspective view of the inlay cover feeding section of a preferred embodiment of the present invention;

[0021] Figure 5 Schematic perspective view of the support seat oil spraying station of a preferred embodiment of the present invention;

[0022] Figure 6 Schematic perspective view of the magnetic core - support seat assembly station of a preferred embodiment of the present invention;

[0023] Figure 7 Schematic perspective view of the valve core - sleeve fitting part of a preferred embodiment of the present invention;

[0024] Figure 8 Schematic view of the structure of the retaining plate crimping plate of a preferred embodiment of the present invention;

[0025] Figure 9 Schematic perspective view of the second assembly workstation of a preferred embodiment of the present invention when the housing is removed;

[0026] Figure 10 is Figure 9 Partial enlarged view at position A in

[0027] Figure 11 is Figure 9 Partial enlarged view at position B in

[0028] Figure 12 Schematic perspective view of the spring distributing plate of a preferred embodiment of the present invention;

[0029] Figure 13 Schematic view of the connection relationship among the spring distributing plate, the detection rod and the indicating block of a preferred embodiment of the present invention;

[0030] Figure 14 Schematic view of the structure of the tensile test jaw of a preferred embodiment of the present invention;

[0031] Figure 15 Schematic perspective view of the third assembly workstation of a preferred embodiment of the present invention when the housing is removed;

[0032] Figure 16 is Figure 15 Partial enlarged view at position C in

[0033] Figure 17 Schematic view of the connection relationship between the blanking slider and the spring of a preferred embodiment of the present invention;

[0034] Figure 18 Schematic diagram of the connection relationship among the circlip loading plate, circlip stop plate and positioning tongue for a preferred embodiment of the present invention;

[0035] Figure 19 Schematic three-dimensional structure diagram of the O-ring installation unit for a preferred embodiment of the present invention;

[0036] Figure 20 Schematic three-dimensional structure diagram of the fourth assembly workstation for a preferred embodiment of the present invention when the housing is removed;

[0037] Figure 21 Schematic three-dimensional structure diagram of a preferred embodiment of the present invention when the O-ring installation unit is not provided;

[0038] Figure 22 is Figure 21 Partial enlarged schematic diagram at position D in

[0039] Figure 23 Schematic structure diagram when the card slot guides the pins of the valve core body for a preferred embodiment of the present invention. Detailed implementation manners

[0040] The following elaborates on the preferred embodiments of the present invention in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making the protection scope of the present invention more clearly defined.

[0041] Referring to the attached Figure 1 As shown, the solenoid valve assembly production line of the present invention includes a conveying track 5, at least one assembly workstation and at least one detection workstation. The assembly workstations of the present invention include a first assembly workstation 1, a second assembly workstation 2, a third assembly workstation 3 and a fourth assembly workstation 4. The first assembly workstation 1 is used for the assembly of the magnetic core 101, the embedded cover 102, the support seat 103, the valve core 104, the sleeve 105 and the retaining piece 106 as shown in the attached Figure 2 As shown, the second assembly workstation 2 is used for the assembly of components such as the sleeve 105, the spring, the coil 107, the housing 108 and the protective cover 109; the third assembly workstation 3 is used for the assembly of components such as the valve body 1010, the circlip 1011, the damping piston 1012 and the guide sleeve 1013; the fourth assembly workstation 4 is used for fixing the valve body and the valve core body through a flange and sleeving an O-ring on the valve core body.

[0042] Referring to the attached Figures 3 - 8 As shown, the first assembly workstation 1 of the present invention includes a first turntable 11. Along the circumferential direction of the first turntable 11, a plurality of workstations are sequentially arranged, including a magnetic core - support seat loading workstation 111, an embedded cover crimping workstation 112, a support seat oil spraying workstation 113, a magnetic core - support seat assembly workstation 114 and a sleeve - valve core - support seat assembly workstation 115.

[0043] Each work station is provided with two adjacent part receiving grooves. The first assembly work station 1 includes a magnetic core feeding tray 12, a support base feeding tray 13, and a first manipulator 14. The first manipulator 14 is used to transport the magnetic core and the support base to the magnetic core and support base loading station.

[0044] The first assembly work station 1 of the present invention further includes a magnetic core opening direction detection unit and a support base flipping unit.

[0045] The magnetic core opening direction detection unit includes a magnetic core inspection tool 15, and a detection head that can be clamped to one end of the magnetic core is provided on the magnetic core inspection tool 15. In the magnetic core assembled by the present invention, connection holes are provided in the middle of the upper end and the lower end, and the middle part of the magnetic core is a hollow structure. The normal placement direction of the magnetic core should be that the diameter of the connection hole at the upper end is large, and the diameter of the connection hole at the lower end is small. The outer diameter of the detection head of the inspection tool is between the diameters of the two connection holes at the upper end and the lower end of the magnetic core. Therefore, when the placement angle of the magnetic core is correct, the detection head cannot extend into the magnetic core. After the magnetic core inspection tool 15 detects that its opening direction is correct, the first manipulator 14 clamps the magnetic core and places it in a part receiving groove at the magnetic core and support base loading station.

[0046] The support base flipping unit includes a rotatable support base suction head 16 and a first rotary cylinder 17 connected to the support base suction head 16. A support base limiting groove that cooperates with the support base is provided on the support base suction head 16, and a suction port communicating with the air source is provided in the middle of the support base limiting groove. The support base suction head 16 of the present invention is located above the magnetic core and support base loading station of the first turntable 11. Therefore, after the first manipulator 14 places the support base in the support base limiting groove, it is sucked by the support base suction head 16. At this time, the first rotary cylinder 17 drives the support base to rotate 180 degrees, the support base suction head 16 releases, and it falls into another part receiving groove at the magnetic core and support base loading station.

[0047] The first assembly work station 1 of the present invention further includes an embedded cover feeding part (see the appendix Figure 4as shown) and an embedding cover pressing head disposed above the magnetic core at the embedding cover crimping station 112. The embedding cover feeding section includes an embedding cover feeding vibrating bowl 18, an embedding cover linear vibrating track connected to the embedding cover feeding vibrating bowl 18, and an embedding cover cutting plate 19 disposed at the end of the embedding cover linear vibrating track to block the embedding cover linear vibrating track. It further includes an embedding cover feeding gantry 130 and an embedding cover feeding suction nozzle 131. One end of the embedding cover feeding gantry 130 is close to the end of the embedding cover linear vibrating track, and the other end is close to the embedding cover crimping station 112 of the first turntable 11. The embedding cover feeding suction nozzle 131 can reciprocate along the embedding cover feeding gantry 130. In addition, it further includes a first lifting cylinder 132 connected to the embedding cover feeding suction nozzle 131, so that the up-and-down movement of the embedding cover feeding suction nozzle 131 can be realized, and thus the embedding cover can be transported from the end of the embedding cover linear vibrating track to the magnetic core located at the embedding cover crimping station 112. Subsequently, under the action of the embedding cover pressing cylinder, the embedding cover pressing head crimps and engages the embedding cover with the magnetic core.

[0048] The support base oil injection station 113 of the present invention (see the attached Figure 5 as shown) includes an oil injection gun 133 disposed above the part receiving groove for placing the support base at the support base oil injection station 113. The oil injection gun 133 can move up and down under the action of a second lifting cylinder 134. An oil droplet receiving tray 135 is further disposed below the oil injection gun 133. It also includes a first translation cylinder for driving the oil droplet receiving tray 135 to move, and the oil droplet receiving tray 135 can move to the position below the oil injection gun 133 under the action of the first translation cylinder. A dust suction port is further disposed above the part receiving groove for placing the magnetic core at the support base oil injection station 113, and the dust suction port is connected to a gas source. Thus, the dust particles generated when the magnetic core is crimped with the embedding cover at the previous station can be removed to ensure good working performance of the assembled solenoid valve.

[0049] See the attached Figure 6 As shown, the magnetic core - support base assembly station 114 of the present invention includes a floating centering head 116 for crimping the support base and a second manipulator 117 for clamping and moving the magnetic core above the support base. A crimping edge is disposed on the side of the floating centering head 116 that is crimped with the support base, and the crimping edge is designed with a chamfer. A through hole for the magnetic core to pass through is disposed through the middle of the floating centering head 116, and the diameter of the through hole gradually decreases from top to bottom. Therefore, the second manipulator 117 clamps the magnetic core above the through hole of the floating centering head 116 and slides down to the middle of the support base under the action of the floating centering head 116.

[0050] The sleeve - spool - support base assembly station 115 of the present invention includes a spool - sleeve fitting part (see the attached Figure 7as shown), a baffle crimping portion, and a third manipulator 118. The third manipulator 118 includes a clamping jaw and a suction head at one end close to the object to be clamped. The valve core - sleeve fitting portion includes a valve core feeding tray 119, a sleeve feeding tray 120, a fitting tube body 122 arranged perpendicular to the horizontal plane, and a first lifting oil cylinder 121 located below the fitting tube body 122. The inner diameter of the fitting tube body 122 is larger than the outer diameters of the valve core and the sleeve. First, the third manipulator 118 clamps the valve core above the fitting tube body 122, releases the valve core, and it falls along the fitting tube body 122 and is limited by the push rod of the first lifting oil cylinder 121. Subsequently, the third manipulator 118 clamps the sleeve above the fitting tube body 122 and makes the lower end of the sleeve extend into the fitting tube body 122. At this time, the push rod of the first lifting oil cylinder 121 pushes the valve core upward and into the sleeve. After the valve core is pushed out of the sleeve, it is sucked by the suction head of the third manipulator 118, and thus the valve core and the sleeve are mutually fitted. The third manipulator 118 moves the valve core - sleeve to the baffle crimping portion.

[0051] The first assembly workstation 1 of the present invention further includes a sleeve oil spraying portion 123, which includes an oil spraying chamber. An oil spraying head is provided on the lower bottom plate of the oil spraying chamber, and it also includes a sleeve oil spraying clamping jaw. By placing the sleeve on the oil spraying head, the inner side wall of the sleeve is sprayed from bottom to top, thus being able to reduce the friction when inserting the valve core into the spout. The oil - sprayed sleeve is placed on the sleeve temporary storage tray and is transported to the sleeve feeding tray 120 by the oil spraying manipulator.

[0052] The baffle crimping portion includes a first baffle vibrating disk 124, a baffle straight - vibrating track connected to the first baffle vibrating disk 124, a movable baffle cutting plate 125, a baffle lifting oil cylinder 126, and a baffle crimping frame 127. A baffle crimping plate 128 is provided on the baffle crimping frame 127 (see the attached Figure 8 as shown). A plug - in hole for the sleeve to pass through is provided on the baffle crimping plate 128. It also includes a baffle bearing plate connected to the baffle straight - vibrating track. The baffle cutting plate 125 can move on the baffle bearing plate. A through - hole for the push rod of the baffle lifting oil cylinder 126 to pass through is provided on the baffle bearing plate, and the diameter of the through - hole is smaller than the diameter of the baffle. The push rod of the baffle lifting oil cylinder 126 can pass through the through - hole on the baffle bearing plate. The baffle can be moved by the baffle cutting plate 125 to below the plug - in hole. When performing baffle crimping, first, the third manipulator 118 moves the valve core - sleeve together to the plug - in hole. Then, the baffle lifting oil cylinder 126 jacks up the baffle and engages it with the sleeve to complete the crimping of the sleeve and the baffle to obtain a sleeve assembly. Subsequently, the third manipulator 118 clamps the valve core - sleeve - baffle assembly to the support seat station on the first turntable 11 where the magnetic core has been assembled and pre - presses it with the support seat.

[0053] The first assembly workstation 1 of the present invention further includes a blanking gripper for blanking the assembled sleeve assembly on the first turntable 11. The blanking gripper clamps the sleeve assembly onto the conveying tray located on the conveying track 5. On the conveying track 5, there is also provided a sleeve assembly crimping part 129 for crimping the sleeve and the support seat, which includes a crimping frame arranged on the conveying track 5. Above the conveying track 5 of the crimping frame, there is an upper pressing cylinder, and below the conveying track 5 and opposite to the upper pressing cylinder, there is a lower pressing cylinder. Therefore, when the sleeve assembly is transported to the sleeve assembly crimping part 129 along with the conveying tray, the sleeve and the support seat are pressed tightly, and a sleeve assembly with stable structure is assembled.

[0054] The sleeve assembly assembled by the first assembly workstation 1 is placed on the conveying tray and enters the second assembly workstation 2 along the conveying track 5.

[0055] See the appendix Figures 9 - 14 As shown in the figure, the second assembly workstation 2 of the present invention includes a spring feeding part, a spring cap feeding part 22, a housing - coil feeding part 23, and a protective cover feeding part.

[0056] The spring feeding part of the present invention includes a spring 317 distributor 211 and a spring feeding pipe connected to the spring 317 distributor 211 through an air pipe. It also includes a spring distribution plate 212 and a spring cutting block 213. See the appendix Figure 12 As shown in the figure, on the spring distribution plate 212, there is a spring cutting groove 2121 for the spring cutting block 213 to pass through. The spring cutting block 213 can reciprocate in the spring cutting groove 2121. On the spring distribution plate 212, there is a first channel 2122 communicated with the spring feeding pipe, and on the spring distribution plate 212, there is also a second channel 2123 communicated with the spring discharge port. On the spring cutting block 213, there is a spring discharge groove that can be respectively communicated with the first channel 2122 and the second channel 2123. The spring cutting block 213 of the present invention moves horizontally under the action of a spring cutting cylinder. When the spring cutting block 213 moves to be communicated with the first channel 2122, the spring 317 enters the spring discharge groove of the spring cutting block 213 and is driven by the spring cutting block 213 to be communicated with the second channel 2123, thereby realizing the orderly discharge of the spring 317. At the first channel 2122 of the present invention, there is also a grating detector for detecting the presence or absence of the spring 317.

[0057] See the appendix Figure 13As shown in the figure, a vertically movable detection rod 214 is further provided above the second channel 2123 of the spring distribution plate 212. An indicating block 2141 is provided at the upper end of the detection rod 214. A groove type inductor for detecting the position of the indicating block 2141 is also included. Therefore, when there is a spring 317 in the second channel 2123, the indicating block 2141 can be sensed by the groove type inductor. On the contrary, when the indicating block 2141 moves downward, the groove type inductor cannot detect the indicating block 2141, and an alarm will be given for reminder.

[0058] The spring discharge port of the present invention is located above the conveying track 5. A cylinder for jacking up the conveying tray located on the conveying track 5 is provided below the spring discharge port. Therefore, the sleeve assembly transported from the conveying track 5 is pushed upward by the cylinder, and the spring 317 falls into the sleeve.

[0059] The spring cap feeding part 22 includes a spring cap vibrating bowl 221 and a spring cap linear vibrating track communicated with the spring cap vibrating bowl 221. A spring cap cutting plate 222 is provided at the end of the spring cap linear vibrating track. A ejector rod 223 passing through the spring cap cutting plate 222 is also included. A spring cap detection probe 215 is provided at a position slightly higher than the upper end of the ejector rod 223. The target placement method of the spring cap should be sleeved on the upper end of the ejector rod 223. At this time, the spring cap detection probe 215 will not receive any input signal. Otherwise, the spring cap detection probe 215 will detect the presence of the spring cap and send out an alarm signal. Subsequently, the spring cap is moved by the spring cap gripper to the upper part of the sleeve assembly located on the conveying track 5 and is engaged with the sleeve assembly under the action of a hydraulic cylinder located below the sleeve assembly on the conveying track 5. The claw part of the spring cap gripper of the present invention is waist-shaped and opens to both sides at the lower end, so it is convenient to be engaged with the spring cap.

[0060] The housing - coil feeding part 23 of the present invention includes a fourth manipulator 231, a housing rotating head and a second rotating cylinder 233 connected to the housing rotating head. The housing is clamped by the fourth manipulator 231 to the housing rotating head, and after rotation, it falls onto the conveying tray located on the conveying track 5 and is placed adjacent to the sleeve assembly assembled with the spring 317 and the spring cap. The opening of the housing faces upward after rotation.

[0061] The casing-coil feeding part 23 of the present invention further includes a casing direction guiding mechanism. The casing direction guiding mechanism includes a casing direction guiding groove 234 that can rotate driven by a rotating motor, and further includes a detection head 235 that can extend towards the casing direction guiding groove 234. When guiding the casing direction, the rotating motor drives the casing direction guiding groove 234 to rotate slowly. If the detection head 235 can extend into the notch preset between the casing and the support seat, it means that the casing direction is correct. When guiding the direction of the casing, the fourth manipulator 231 grabs the coil and places it into the casing. The casedirection-guided casing is grabbed by the fourth manipulator 231 and placed into the coil. Subsequently, the oil cylinder located below the conveying track 5 jacks up the conveying tray again and abuts it against the upper pressing plate to realize the crimping of the casing assembly and the casing.

[0062] The protective cover feeding part of the present invention includes a protective cover feeding gantry 241, a protective cover gripper connected to the protective cover feeding gantry 241, a protective cover vibrating bowl 242, and a protective cover linear vibrating track. A protective cover cutting plate 243 is provided at the end of the protective cover linear vibrating track. After the protective cover is output through the protective cover cutting plate 243, it is pushed up under the action of the first lifting cylinder 244, then sucked, and pushed by the second translation cylinder 245 and clamped onto the casing.

[0063] The protective cover feeding part of the present invention further includes a mechanism for testing the insertion stability of the protective cover, which includes a tensile test gripper 246 that pulls the pins of the protective cover and the casing in two opposite directions respectively (see the attached Figure 14 figure). The two tensile test grippers 246 are respectively driven by cylinders to pull the protective cover and the casing in a direction away from each other. The parts that pass the insertion stability test are transported to the conveying tray of the conveying track 5 and continue to be conveyed forward.

[0064] The second assembly workstation 2 of the present invention further includes an insulation testing part. A metal probe that can communicate with the pins of the protective cover is provided in the insulation testing part. After passing the detection, the semi-finished solenoid valve continues to be conveyed along the conveying track 5 to the third assembly workstation 3.

[0065] See the attached Figures 15 - 18As shown, in the third assembly workstation 3 of the present invention, the guide sleeve, the damping piston and the spring are manually installed into the valve body, and then the circlip and the baffle are automatically assembled. The third assembly workstation 3 of the present invention includes a circlip feeding part and a baffle feeding part 32. The circlip feeding part includes a circlip vibration disk 311, a circlip guide tube 312 connected to the circlip vibration disk 311, a circlip feeding plate 313 and a circlip baffle plate 314, and a circlip receiving groove capable of accommodating a single circlip is provided on the circlip feeding plate 313. It also includes a feeding slider and a baffle slider 316 connected to the circlip feeding plate 313 and the circlip baffle plate 314, respectively, and a circlip feeding slide rail for guiding the feeding slider and the baffle slider 316. A spring receiving channel and a push rod channel are provided in the middle of the material blocking slider 316 in the same direction as the moving direction of the material feeding slider and the material blocking slider 316. A material blocking rod is provided in the spring receiving channel, and a limit head is provided at the end of the material blocking rod for engaging with the material blocking slider 316. A limit spring 317 is provided on the outer sleeve of the material blocking rod, and a limit edge that can abut against the limit spring 317 is provided in the spring receiving channel. When the limit spring 317 is relaxed, it can push the material blocking slider 316 to the bottom of the retaining spring guide tube 312 and abut against the retaining spring sleeved on the retaining spring guide tube 312 to prevent the retaining spring from falling. The present invention also includes a push rod that passes through the push rod channel and is connected to the material feeding slider. The push rod can drive the material feeding slider to move along the retaining spring material feeding slide rail and push it forward under the action of the third translation cylinder. The stopper slide 316 then moves the spring 317 to the bottom of the stopper slide 316 to prevent the spring from falling.

[0066] See attached Figure 16 As shown, a detection groove 3131 connected to the receiving groove is also provided on the retaining spring feeding plate 313, and a detection probe for detecting whether there is a retaining groove 4361 in the receiving groove is provided in the detection groove 3131.

[0067] The clip feeding part of the present invention also includes a positioning tongue 318 that can extend toward the clip, a groove for the positioning tongue 318 to pass through is provided on the clip stop plate 314, and a positioning cylinder for driving the positioning tongue 318 to move. The positioning tongue 318 is provided on a positioning slide rail 319, and the positioning slide rail 319 is perpendicular to the moving direction of the clip stop plate 314. The positioning tongue 318 can be driven to move by the cylinder. Therefore, under the action of the positioning cylinder, the positioning tongue 318 can be extended into the opening of the clip, and the opening direction of the clip can be positioned and corrected.

[0068] The shim feeding part 32 of the present invention includes a second shim vibrating bowl 321, a shim suction head 322 for sucking the shims, and a shim feeding gantry 323. The shim suction head 322 is arranged on the shim feeding gantry 323 and can move along it. A circlip clamping component 324 that can move along the shim feeding gantry 323 is also arranged on the shim feeding gantry 323. The circlip clamping component 324 includes a floating cylinder 3241 and circlip jaws for clamping the circlip. The circlip can be centered under the action of the floating cylinder 3241.

[0069] The third assembly workstation 3 of the present invention further includes a valve body assembly station 33 for fixing the valve body. A centering component for aligning the valve body to be assembled is also arranged at the valve body assembly station 33. The centering component includes a centering sleeve 331 and a centering cylinder 332 for driving the centering sleeve 331 to move up and down. A centering opening is arranged on the upper surface of the centering sleeve 331. The centering opening is in the shape of a horn that opens outward. The inner diameter of the centering sleeve 331 gradually decreases from top to bottom. Under the action of the centering cylinder 332, the centering sleeve 331 moves towards the valve body located below it, aligns the valve body, and the circlip entering the valve body through the centering opening can be centered with the valve body.

[0070] The third workstation of the present invention further includes an industrial inspection camera 34, which is used to detect the assembly state of the solenoid valve. In this embodiment, each assembly of the solenoid valve needs to be detected twice by the industrial inspection camera 34. The present invention also includes a detection slide rail 35 for the movement of the valve body assembly station 33. The first detection of the valve body is after the damping piston, guide sleeve and spring are installed in the valve body. The valve body assembly station 33 is pushed out along the detection slide rail 35, and the industrial inspection camera 34 detects it. Subsequently, the valve body assembly station 33 resets to install the circlip and shim; the second detection is after the installation of the circlip and shim. The valve body assembly station 33 is pushed out again, and the industrial inspection camera 34 detects again whether the shim and circlip are assembled completely.

[0071] See the appendix Figures 19 - 23 As shown, the fourth assembly workstation 4 of the present invention includes a second turntable 41. A plurality of workstations are arranged on the second turntable 41, and a valve body clamping part is arranged at each workstation. The workstations of the second turntable 41 of the present invention include a crimping station 411 and a flange assembly and locking station 412 that are arranged adjacent to each other in sequence.

[0072] The fourth assembly workstation 4 of the present invention includes an O-ring installation unit, a spool body pressing-in unit 43 and a flange installation unit 44. The fourth assembly workstation 4 is used to assemble the spool body assembled by the second assembly workstation 2 into the valve body of the third assembly workstation 3. The spool body is conveyed to the fourth assembly workstation 4 along the conveying track 5.

[0073] See the appendixFigure 20 As shown, the O-ring installation unit of this embodiment includes three O-ring installation stations. At each O-ring installation station, there is an O-ring feeding tray, an O-ring sleeving rod 421 that can swing towards or away from the O-ring feeding tray, and a third rotating cylinder 422 for driving the O-ring sleeving rod 421 to rotate.

[0074] The valve core body pressing unit 43 of the present invention includes a valve core body feeding part, a valve core body flipping part, and a valve body pressing part for pressing the valve core body into the valve body.

[0075] See Appendix Figure 21 and 22 As shown, the valve core body feeding part includes a fifth manipulator 431 and a valve core body feeding rack 432. The valve core body feeding rack 432 passes through the valve core body feeding part, the valve core body flipping part, and the valve body pressing part in sequence. The fifth manipulator 431 can move along the valve core body feeding rack 432 driven by the valve core body feeding motor, and sequentially transport the valve core body to the flipping part and the valve body pressing part.

[0076] The valve core body flipping part of the present invention includes a rotating head and a fourth rotating cylinder 433 connected to the rotating head. A first clamping jaw 334 for clamping the valve core body is provided on the rotating head. The valve core body rotates under the action of the fourth rotating cylinder 433, and then the manipulator clamps the valve core body with the adjusted direction and moves it to the valve body pressing part.

[0077] The valve body pressing part is arranged at the pressing station, and it includes a pressing head that can move up and down and a lower tightening cylinder located below the valve body. The pressing head is arranged above the pressing station.

[0078] The valve core body pressing unit 43 of the present invention further includes a valve core body guiding part arranged adjacent to the pressing station. The valve core body guiding part includes a clamping groove 434 (see Appendix Figure 23 shown) that can move towards or away from the valve core body located at the pressing station, and the pins of the valve core body can be clamped into the clamping groove 434.

[0079] The flange mounting unit 44 of the present invention includes a flange feeding part, a flange loading part, a screw fastening part, and a screw tightening part. The flange feeding part includes a flange feeding vibrating bowl 441 and a linear vibrating track connected thereto. An identification camera is provided in the flange feeding vibrating bowl 441 to output the side of the flange with the fixing holes facing upward onto the linear vibrating track. A flange temporary storage groove is provided at the end of the linear vibrating track, and opposite limiting edges are provided on the upper edge of the linear vibrating track, which can ensure the stable movement of the flange along the linear vibrating track. The flange loading part includes a second jaw 442 capable of clamping the flange and a flange conveying slide rail. The second jaw 442 moves the flange along the flange conveying slide rail to the flange assembly and tightening station 412 of the second turntable 41. The present invention further includes a third lifting cylinder 443 for driving the lifting of the second jaw 442 and a fifth rotating cylinder for driving the rotation of the second jaw 442. The pneumatic fingers of the flange loading part pick up the flange in the flange temporary storage groove and move it along the slide rail to the flange assembly and tightening station 412, and release the flange, sleeving it on the valve body. The screw fastening part of the present invention is communicated with the screw tightening part. The screw fastening part includes a screw feeding vibrating bowl 444 and a feeding air pipe (not shown in the figure) communicated with the screw feeding vibrating bowl 444. The screw tightening part includes an automatic screw gun 445 capable of moving to the flange assembly and tightening station 412 of the second turntable 41. The automatic screw gun 445 is communicated with the screw feeding vibrating bowl 444 of the screw fastening part through the feeding air pipe, and locks the flange and the valve body with bolts. The screw tightening part further includes an upper screw slide rail 446 connected to the pneumatic screw gun, and the pneumatic screw gun can move along the upper screw slide rail 446, thereby realizing the automatic screwing of the two screw holes of the flange, and thus assembling the solenoid valve.

[0080] The present invention further includes a vacuum oil immersion workstation 6, which is used to immerse the solenoid valve obtained by unloading from the fourth assembly workstation 4 in oil and then evacuate it. Two oil immersion tanks 61 are provided in the vacuum oil immersion workstation 6, which work alternately, one for evacuating and the other for loading. The oil-immersed solenoid valve is placed back on the conveying tray of the conveying track 5 and enters the detection workstation. The solenoid valve production line of the present invention has a test workstation 7, which is used to test the performance (such as pressure resistance and airtightness, etc.) of the solenoid valve. After the solenoid valve product is tested, it returns to the conveying tray of the conveying track 5. A blowing head is also provided on the conveying track 5 to clean the solenoid valve. Subsequently, the solenoid valve enters the coding and evaluation workstation 8, NG is unloaded, and the qualified products continue to enter the unloading workstation along the conveying track 5. The unloading workstation includes a detection unit 91 for detecting the pins of the protective cover through a camera and a cleaning unit 92 for oil flushing the solenoid valve. The cleaning unit 92 includes an oil spray gun. After the solenoid valve is reciprocally cleaned by spraying oil from the oil spray gun, the cleaning oil is drained, and it can be packaged and discharged.

[0081] The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose is to enable those who are familiar with this technology to understand the content of the present invention and implement it. It is not intended to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit and essence of the present invention should be covered within the protection scope of the present invention.

Claims

1. An electromagnetic valve assembly production line, comprising a conveying track, at least one assembly workstation and at least one detection workstation, characterized in that, The assembly workstation is used to realize the automatic assembly of the valve core body and can also realize the automatic assembly of the valve core body and the valve body. The valve core body is assembled from a magnetic core, an embedded cover, a support seat, a valve core, a retaining plate, a sleeve, a spring, a coil, a housing, and a protective cover; The assembly workstation includes a first assembly workstation, a second assembly workstation, a third assembly workstation, and a fourth assembly workstation. The first assembly workstation is used for the assembly of the magnetic core, the embedded cover, the support seat, the valve core, the sleeve, and the retaining plate. The second assembly workstation is used for the assembly of the sleeve, the spring, the coil, the housing, and the protective cover. The third assembly workstation is used for the assembly of the valve body, the snap ring, the damping piston, and the guide sleeve. The fourth assembly workstation is used to fix the valve body and the valve core body through a flange and sleeved an O-ring on the valve core body; The first assembly workstation includes: A magnetic core - support seat feeding station, an embedded cover crimping station, a magnetic core - support seat assembly station, and a sleeve - valve core - support seat assembly station; It also includes a magnetic core opening direction detection part and a support seat flipping part. The magnetic core opening direction detection part includes a magnetic core gauge, and a detection head that can be clamped to one end of the magnetic core is provided on the magnetic core gauge. The support seat flipping part includes a rotatable support seat suction head; The sleeve - valve core - support seat assembly station includes a valve core - sleeve fitting part, a retaining plate crimping part, and a manipulator. The manipulator includes a clamping claw and a suction head located at one end close to the object to be clamped. The valve core - sleeve fitting part includes a valve core feeding tray, a sleeve feeding tray, a fitting tube body, and a first lifting oil cylinder located below the fitting tube body. The inner diameter of the fitting tube body is larger than the outer diameters of the valve core and the sleeve. The retaining plate crimping part is used to press the retaining plate into one end of the sleeve to obtain a sleeve assembly, and the manipulator can press the sleeve assembly into the support seat; The third assembly workstation includes a snap ring feeding part, a retaining plate feeding part, and a movable valve body assembly station, The snap ring feeding part includes a snap ring guiding tube, a snap ring feeding plate, and a snap ring stop plate. A snap ring receiving groove capable of accommodating a single snap ring is provided on the snap ring feeding plate. It also includes a spring for limiting the snap ring stop plate to abut against the snap ring guiding tube, and a driving device for driving the movement of the snap ring feeding plate. A detection groove communicating with the snap ring receiving groove is also provided on the snap ring feeding plate, and a detection probe for detecting whether there is a snap ring in the snap ring receiving groove is provided in the detection groove; The retaining plate feeding part includes a snap ring clamping component. The snap ring clamping component includes a floating cylinder and a snap ring clamping claw for clamping the snap ring; A centering component for guiding and centering the valve body to be assembled is also provided at the valve body assembly station. The centering component includes a centering sleeve and a centering cylinder for driving the centering sleeve to move up and down; The fourth assembly workstation is used to assemble the valve core body obtained through the second assembly workstation and the valve body, The fourth assembly workstation includes a crimping station and a flange assembly and locking station. The fourth assembly workstation includes an O-ring installation unit, a valve core body pressing unit, and a flange installation unit, The O-ring installation unit includes at least one O-ring installation station, and at each O-ring installation station, there is an O-ring feeding tray, an O-ring sleeving rod that can swing towards or away from the O-ring feeding tray, and a third rotating cylinder for driving the O-ring sleeving rod to rotate. The valve core body pressing unit includes a valve core body feeding part, a valve core body flipping part, and a valve body crimping part for pressing the valve core body into the valve body. The valve body crimping part is arranged at the crimping station. The valve core body pressing unit further includes a valve core body guiding part arranged adjacent to the crimping station. The valve core body guiding part includes a clamping groove that can move towards or away from the valve core body located at the crimping station, and the pins of the valve core body can be clamped into the clamping groove. The fourth assembly workstation includes a second turntable, and a plurality of workstations are arranged on the second turntable, and a valve body clamping part is arranged at each workstation; the workstations of the second turntable include a crimping station and a flange assembly and locking station arranged adjacent to each other in sequence. The flange installation unit includes a flange feeding part, a screw feeding part, and a screw locking part. The flange feeding part includes a second jaw that can clamp the flange, and the second jaw can move the flange to the flange assembly and locking station of the second turntable. The screw feeding part is communicated with the screw locking part. The screw locking part includes an automatic screw gun that can move to the flange assembly and locking station of the second turntable, and the automatic screw gun is movable.

2. The solenoid valve assembly production line according to claim 1, wherein, A sleeve assembly crimping part for crimping the sleeve and the support seat is further arranged on the conveying track between the first assembly workstation and the second assembly workstation. The sleeve assembly crimping part includes a crimping frame arranged on the conveying track, and at least one pressing cylinder is further arranged on the crimping frame, and the push rod of the pressing cylinder extends towards the sleeve assembly passing through the crimping frame.

3. The solenoid valve assembly production line according to claim 1, characterized in that, The magnetic core - support seat assembly station includes a floating centering head for crimping the support seat. A crimping edge is arranged on one side of the floating centering head that is crimped with the support seat. The edge of the crimping edge has a chamfer structure. A through hole for the magnetic core to pass through is arranged through the middle of the floating centering head, and the diameter of the through hole gradually decreases from top to bottom.

4. The solenoid valve assembly production line according to claim 1, characterized in that, The second assembly workstation includes a spring feeding part, a spring cap feeding part, a housing - coil feeding part, and a protective cover feeding part. The spring feeding part includes a spring distributor, a spring feeding pipe connected to the spring distributor, a spring dividing plate, and a spring cutting block. A spring cutting groove for the spring cutting block to pass through is arranged on the spring dividing plate. The spring cutting block can reciprocate in the spring cutting groove. A first channel communicated with the spring feeding pipe is arranged on the spring dividing plate, and a second channel communicated with the spring discharge port is further arranged on the spring dividing plate. A spring discharge groove that can be respectively communicated with the first channel and the second channel is arranged on the spring cutting block. The protective cover feeding part includes a protective cover vibrating disk and a protective cover straight vibrating track. A protective cover cutting plate is arranged at the end of the protective cover straight vibrating track, and a translation cylinder for clamping the protective cover into the housing is further included.

5. The solenoid valve assembly production line according to claim 4, characterized in that, The spring cap feeding part includes a spring cap cutting plate, and further includes a ejector rod passing through the spring cap cutting plate, and a spring cap detection probe is arranged at a position higher than the upper end of the ejector rod.

6. The solenoid valve assembly production line according to claim 4, characterized in that, A movable detection rod is further arranged above the second channel of the spring dividing plate. An indicating block is arranged at the upper end of the detection rod, and a groove type inductor for detecting the position of the indicating block is further included; The housing-coil feeding part further includes a sleeve direction guiding mechanism. The sleeve direction guiding mechanism includes a sleeve direction guiding groove that can be rotated driven by a rotating motor, and further includes a detection head that can extend towards the sleeve direction guiding groove.

7. The solenoid valve assembly production line according to claim 1, characterized in that The circlip feeding part further includes a positioning tongue and a positioning slide rail that can extend towards the circlip. A groove body for the positioning tongue to pass through is arranged on the circlip stop plate, and a positioning cylinder for driving the movement of the positioning tongue is further included. The positioning tongue is arranged on the positioning slide rail and can slide along the positioning slide rail. The positioning slide rail is perpendicular to the moving direction of the circlip stop plate.

8. The solenoid valve assembly production line according to any one of claims 1-7, characterized in that, A vacuum oil impregnation workstation and a blanking workstation are further included. The vacuum oil impregnation workstation is used for impregnating the assembled solenoid valve with oil and then evacuating the air, and the blanking workstation is used for cleaning and discharging the assembled and detected solenoid valve.

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