Process two blocking assembly system and electro-hydraulic reversing valve assembly line

Abstract

The utility model relates to hydraulic element assembly technical field provides a kind of second process plug assembly system and electro-hydraulic reversing valve assembly line.In the second process plug assembly system, including process plug tightening mechanism, process plug feeding mechanism and tightening mechanism driving device.Process plug feeding mechanism is laid to the side of process plug tightening mechanism, it can feed second process plug to process plug tightening mechanism.Tightening mechanism driving device is connected with process plug tightening mechanism, for driving process plug tightening mechanism moves in the space near valve body, to make process plug tightening mechanism move to preset valve body assembly position, for process plug tightening mechanism to carry out second process plug tightening operation in corresponding position.Through this structure, the automatic feeding, accurate positioning and efficient tightening of second process plug are realized, the assembly efficiency is greatly improved, the problem that manual operation efficiency is low is effectively overcome, the labor intensity is reduced, and it is applicable to the batch automatic assembly production of electro-hydraulic reversing valve body process plug.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic component assembly technology, and in particular to a No. 2 process plug assembly system and an electro-hydraulic directional valve assembly line. Background Technology

[0002] Electro-hydraulic directional valves typically have a single row of spaced-apart second process holes on the valve core assembly end face. These second process plugs must be assembled separately to achieve effective sealing of the valve body flow channel and maintain structural integrity. Currently, the assembly of these process plugs mainly relies on manual operation, resulting in low assembly efficiency and high labor intensity, making it difficult to meet the needs of mass production. Utility Model Content

[0003] To address the aforementioned technical problems, this utility model provides a No. 2 process plug assembly system and an electro-hydraulic directional valve assembly line.

[0004] A first aspect of this utility model provides a second process plug assembly system, comprising: a process plug tightening mechanism capable of tightening a second process plug on a valve body; a process plug feeding mechanism disposed beside the process plug tightening mechanism and used to feed the second process plug to the process plug tightening mechanism; and a tightening mechanism driving device connected to the process plug tightening mechanism for driving the process plug tightening mechanism to move in space, so that the process plug tightening mechanism moves to a preset valve body assembly position, allowing the process plug tightening mechanism to perform the second process plug tightening operation at the corresponding position.

[0005] According to the present invention, a No. 2 process plug assembly system is provided, wherein the process plug feeding mechanism includes: a feeding pipe for conveying the No. 2 process plug; a receiving platform; and a pushing mechanism that moves with the receiving platform, wherein the pushing mechanism drives the receiving platform to move between the outlet of the feeding pipe and the process plug tightening mechanism.

[0006] According to the present invention, a second process plug assembly system is provided, wherein the process plug feeding mechanism further includes a process plug feeding detection device, which is disposed at the outlet of the feeding pipe and is used to detect the feeding status of the second process plug.

[0007] According to the present invention, a second-stage process plug assembly system further includes: a process plug assembly frame; a process plug assembly mounting plate connected to the process plug assembly frame; and a tightening mechanism drive device including: a process plug assembly X-axis guide rail connected to the process plug assembly mounting plate; a process plug assembly X-axis slide slidably connected to the process plug assembly X-axis guide rail; a process plug assembly X-axis drive mechanism connected to the process plug assembly X-axis slide; and a process plug assembly connecting plate. The plate is connected to the X-axis slide table for the process plug assembly; the Z-axis guide rail for the process plug assembly is connected to the connecting plate for the process plug assembly; the Z-axis slider for the process plug assembly is slidably connected to the Z-axis guide rail for the process plug assembly; the Z-axis drive mechanism for the process plug assembly is connected to the Z-axis slider for the process plug assembly; the first X-axis limiting block for the process plug assembly is disposed on one side of the X-axis slide table for the process plug assembly; the second X-axis limiting block for the process plug assembly is disposed on the other side of the X-axis slide table for the process plug assembly.

[0008] According to the present invention, a second-stage process plug assembly system includes a process plug tightening mechanism comprising: a tightening gun for process plug assembly, the tightening gun being slidably connected to a Z-axis slider for process plug assembly; a tightening bit for process plug assembly, the tightening bit being connected to the tightening gun for process plug assembly; a sensing module for process plug assembly, the sensing module being connected to the tightening bit for process plug assembly and used to detect the torque, speed, and tightening depth of the tightening bit for process plug assembly; and a control device for process plug assembly, the control device being connected to the sensing module and the tightening bit for process plug assembly and used to control the working state of the tightening bit for process plug assembly based on the detection results of the sensing module for process plug assembly.

[0009] According to the present invention, a No. 2 process plug assembly system is provided, wherein the process plug tightening mechanism further includes a negative pressure adsorption module, the negative pressure adsorption module being connected to the tightening bit for assembling the process plug, so that the tightening bit for assembling the process plug can adsorb the No. 2 process plug on the receiving platform.

[0010] According to the present invention, a second process plug assembly system is provided, the second process plug assembly system further includes an oil dipping component, which is disposed on the side of the process plug tightening mechanism and is used to lubricate the second process plug on the process plug tightening mechanism.

[0011] According to the present invention, a second process plug assembly system is provided, wherein the oil dipping component includes: an oil box for holding oil; and an oil box drive mechanism connected to the oil box and used to drive the oil box to move toward or away from the tightening bit for the process plug assembly.

[0012] According to the present invention, a second process plug assembly system is provided, the second process plug assembly system further includes: a valve body clamping mechanism for assembling the process plug, the valve body clamping mechanism for assembling the process plug is disposed below the process plug tightening mechanism and is used to clamp the valve body.

[0013] A second aspect of this utility model provides an electro-hydraulic directional valve assembly line, including the No. 2 process plug assembly system as described above.

[0014] The No. 2 process plug assembly system provided by this utility model includes a process plug tightening mechanism, a process plug feeding mechanism, and a tightening mechanism drive device. The process plug feeding mechanism is located next to the process plug tightening mechanism and can feed the No. 2 process plug to the process plug tightening mechanism. The tightening mechanism drive device is connected to the process plug tightening mechanism and is used to drive the process plug tightening mechanism to move in the space near the valve body, so that the process plug tightening mechanism moves to a preset valve body assembly position, so that the process plug tightening mechanism can perform the No. 2 process plug tightening operation at the corresponding position.

[0015] As described above, by setting up a process plug tightening mechanism, an automatic feeding mechanism, and a tightening mechanism drive device, the automatic feeding, precise positioning, and efficient tightening of the No. 2 process plug are achieved, which greatly improves the assembly efficiency, effectively overcomes the problem of low efficiency of manual operation, and reduces labor intensity. It is suitable for the batch automated assembly production of process plugs for electro-hydraulic directional valve bodies.

[0016] Furthermore, the electro-hydraulic directional valve assembly line provided by this utility model, since it includes the second process plug assembly system as described above, also possesses the advantages described above. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the electro-hydraulic directional valve assembly line provided by this utility model. Figure 1 .

[0019] Figure 2 This is a schematic diagram of the electro-hydraulic directional valve assembly line provided by this utility model. Figure 2 .

[0020] Figure 3 This is a schematic diagram of the valve body feeding system provided by this utility model. Figure 1 .

[0021] Figure 4 This is a schematic diagram of the valve body feeding system provided by this utility model. Figure 2 .

[0022] Figure 5 This is a schematic diagram of the valve body feeding system provided by this utility model. Figure 3 .

[0023] Figure 6 This is a schematic diagram of the structure of the No. 1 process block bracket in the valve body feeding system provided by this utility model.

[0024] Figure 7 This is a schematic diagram of the valve core assembly system provided by this utility model. Figure 1 .

[0025] Figure 8 This is a schematic diagram of the valve core assembly system provided by this utility model. Figure 2 .

[0026] Figure 9 This is a schematic diagram of the valve core assembly system provided by this utility model. Figure 3 .

[0027] Figure 10 This is a schematic diagram of the structure of the valve core bracket and the valve core splitter in the valve core assembly system provided by this utility model. Figure 1 .

[0028] Figure 11 This is a schematic diagram of the structure of the valve core bracket and the valve core splitter in the valve core assembly system provided by this utility model. Figure 2 .

[0029] Figure 12 This is a schematic diagram of the valve body clamping mechanism for valve core assembly in the valve core assembly system provided by this utility model.

[0030] Figure 13 This is a schematic diagram of the valve body grease injection mechanism in the valve core assembly system provided by this utility model.

[0031] Figure 14 This is a structural schematic diagram of the valve core visual inspection unit in the valve core assembly system provided by this utility model.

[0032] Figure 15 This is a schematic diagram of the oil injection lubrication unit in the valve core assembly system provided by this utility model.

[0033] Figure 16 Schematic diagram of the valve core tightening system in the electro-hydraulic directional valve assembly line provided by this utility model Figure 1 .

[0034] Figure 17 Schematic diagram of the valve core tightening system in the electro-hydraulic directional valve assembly line provided by this utility model Figure 2 .

[0035] Figure 18 Schematic diagram of the valve core tightening system in the electro-hydraulic directional valve assembly line provided by this utility model Figure 3 .

[0036] Figure 19 Schematic diagram of the valve core tightening system in the electro-hydraulic directional valve assembly line provided by this utility model Figure 4 .

[0037] Figure 20 Schematic diagram of the valve core tightening system in the electro-hydraulic directional valve assembly line provided by this utility model Figure 5 .

[0038] Figure 21 Schematic diagram of the valve core tightening system in the electro-hydraulic directional valve assembly line provided by this utility model Figure 6 .

[0039] Figure 22 This utility model provides a structural diagram of the valve core tightening gun, valve core gun drive device, valve core tightening module frame, and module mounting platform in the valve core tightening system of the electro-hydraulic directional valve assembly line. Figure 1 .

[0040] Figure 23 This utility model provides a structural diagram of the valve core tightening gun, valve core gun drive device, valve core tightening module frame, and module mounting platform in the valve core tightening system of the electro-hydraulic directional valve assembly line. Figure 2 .

[0041] Figure 24 This utility model provides a structural diagram of the valve core tightening gun, valve core gun drive device, valve core tightening module frame, and module mounting platform in the valve core tightening system of the electro-hydraulic directional valve assembly line. Figure 3 .

[0042] Figure 25This is a schematic diagram of the No. 2 process plug assembly system in the electro-hydraulic directional valve assembly line provided by this utility model. Figure 1 .

[0043] Figure 26 This is a schematic diagram of the No. 2 process plug assembly system in the electro-hydraulic directional valve assembly line provided by this utility model. Figure 2 .

[0044] Figure 27 This is a schematic diagram of the No. 2 process plug assembly system in the electro-hydraulic directional valve assembly line provided by this utility model. Figure 3 .

[0045] Figure 28 This is a schematic diagram of the No. 2 process plug assembly system in the electro-hydraulic directional valve assembly line provided by this utility model. Figure 4 .

[0046] Figure 29 This is a schematic diagram of the No. 2 process plug assembly system in the electro-hydraulic directional valve assembly line provided by this utility model. Figure 5 .

[0047] Figure 30 This is a schematic diagram of the No. 2 process plug assembly system in the electro-hydraulic directional valve assembly line provided by this utility model. Figure 6 .

[0048] Figure 31 This is a schematic diagram of the No. 2 process plug assembly system in the electro-hydraulic directional valve assembly line provided by this utility model. Figure 7 .

[0049] Figure 32 This utility model provides a schematic diagram of the structure of the process plug tightening mechanism, tightening mechanism drive device, process plug feeding mechanism, and oil dipping assembly in the No. 2 process plug assembly system of the electro-hydraulic directional valve assembly line. Figure 1 .

[0050] Figure 33 This utility model provides a schematic diagram of the structure of the process plug tightening mechanism, tightening mechanism drive device, process plug feeding mechanism, and oil dipping assembly in the No. 2 process plug assembly system of the electro-hydraulic directional valve assembly line. Figure 2 .

[0051] Figure 34 This is a schematic diagram of the pilot valve assembly system in the electro-hydraulic directional valve assembly line provided by this utility model. Figure 1 .

[0052] Figure 35 This is a schematic diagram of the pilot valve assembly system in the electro-hydraulic directional valve assembly line provided by this utility model. Figure 2 .

[0053] Figure 36This is a schematic diagram of the pilot valve assembly system in the electro-hydraulic directional valve assembly line provided by this utility model. Figure 3 .

[0054] Figure 37 This is a schematic diagram of the pilot valve bracket in the pilot valve assembly system of the electro-hydraulic directional valve assembly line provided by this utility model. Figure 1 .

[0055] Figure 38 This is a schematic diagram of the pilot valve bracket in the pilot valve assembly system of the electro-hydraulic directional valve assembly line provided by this utility model. Figure 2 .

[0056] Figure 39 This is a schematic diagram of the pilot valve visual inspection mechanism in the pilot valve assembly system of the electro-hydraulic directional valve assembly line provided by this utility model. Figure 1 .

[0057] Figure 40 This is a schematic diagram of the pilot valve visual inspection mechanism in the pilot valve assembly system of the electro-hydraulic directional valve assembly line provided by this utility model. Figure 2 .

[0058] Figure 41 This is a schematic diagram of the pilot valve transfer mechanism in the pilot valve assembly system of the electro-hydraulic directional valve assembly line provided by this utility model.

[0059] Figure 42 This utility model provides a schematic diagram of the valve body clamping mechanism and screw feeding and tightening mechanism for the pilot valve assembly system in the electro-hydraulic directional valve assembly line. Figure 1 .

[0060] Figure 43 This utility model provides a schematic diagram of the valve body clamping mechanism and screw feeding and tightening mechanism for the pilot valve assembly system in the electro-hydraulic directional valve assembly line. Figure 2 .

[0061] Figure 44 This is a schematic diagram of the screw feeding and tightening mechanism of the pilot valve assembly system in the electro-hydraulic directional valve assembly line provided by this utility model. Figure 1 .

[0062] Figure 45 This is a schematic diagram of the screw feeding and tightening mechanism of the pilot valve assembly system in the electro-hydraulic directional valve assembly line provided by this utility model. Figure 2 .

[0063] Figure 46 This is a schematic diagram of the screw feeding and tightening mechanism of the pilot valve assembly system in the electro-hydraulic directional valve assembly line provided by this utility model. Figure 3 .

[0064] Figure 47 This is a partial structural diagram of an electro-hydraulic directional valve.

[0065] Figure 48 This is a schematic diagram of the valve core in an electro-hydraulic directional valve.

[0066] Figure 49 This is a schematic diagram of the pilot valve in an electro-hydraulic directional valve.

[0067] Attached reference numerals: 1. Valve body feeding system; 2. Transfer system; 3. Valve core assembly system; 4. Valve core tightening system; 5. No. 2 process plug assembly system; 6. Valve body tilting system; 7. Pilot valve assembly system; 8. Finished product unloading system; 9. Finished product bracket; 1100. Dual-axis positioner; 1101. Base; 1102. Turntable; 1103. Workbench; 1104. Positioner operation panel; 1200. Valve body bracket; 1300. Valve body transfer mechanism; 1400. Safety light curtain; 1500. No. 1 process plug bracket; 1600. Tool rack; 1700. Assembly tool; 2100. Upper conveyor line; 2200. Lower conveyor line; 2300. First-end lifting mechanism; 2400. End-end lifting mechanism; 310 0. Valve core transfer mechanism; 3200. Valve core bracket; 3201. Valve core gripping area; 3202. Valve core loading area; 3203. Valve core storage frame; 3204. Valve core platform; 3205. Valve core tray; 3206. Limiting plate; 3300. Valve core dividing actuator; 3400. Valve body clamping mechanism for valve core assembly; 3401. First positioning mounting plate; 3402. First longitudinal guide rail; 3403. First gripper connecting plate; 3404. First transverse guide rail; 3405. First gripper; 3406. First second gripper; 3407. First positioning pin; 3500. Valve body grease injection mechanism; 3501. Grease injection X-axis guide rail; 3502. Grease injection X-axis slider; 3503. Grease injection Y-axis guide rail; Guide rail; 3504, Y-axis slider for grease injection; 3505, Z-axis guide rail for grease injection; 3506, grease spraying connection block; 3507, conical grease spraying head; 3600, valve core visual inspection unit; 3601, protective frame; 3602, light shield; 3603, valve core inspection camera; 3604, camera protective cover; 3605, light source; 3700, oil spraying and lubrication unit; 3701, lubrication frame; 3702, lubrication table; 3703, first valve core positioning block; 3704, second valve core positioning block; 3705, valve core positioning drive mechanism; 3706, oil return seat; 3707, lubrication seat; 3708, lubrication insertion hole; 4100, valve core tightening gun; 4101, valve core gun body; 4102, valve core tightening... Screwdriver bit; 4200, Valve core gun drive device; 4201, X-axis guide rail for valve core tightening; 4202, X-axis slide table for valve core tightening; 4203, transverse slide plate for valve core tightening; 4204, longitudinal connecting plate for valve core tightening; 4205, first limit block for valve core tightening; 4206, second limit block for valve core tightening; 4300, valve core tightening module frame; 4400, module mounting platform; 4500, valve body clamping mechanism for valve core tightening; 4501, second positioning mounting plate; 4502, second first gripper; 4503, second second gripper; 4600, valve core tightening module protective frame; 5100, process plug tightening mechanism; 5101, tightening gun for process plug assembly; 5102, tightening screwdriver bit for process plug assembly;5200. Process plug feeding mechanism; 5201. Receiving platform; 5300. Tightening mechanism drive device; 5301. X-axis guide rail for process plug assembly; 5302. X-axis slide table for process plug assembly; 5303. Connecting plate for process plug assembly; 5304. Z-axis guide rail for process plug assembly; 5305. Z-axis slider for process plug assembly; 5306. First X-axis limit block for process plug assembly; 5307. Second X-axis limit block for process plug assembly; 5400. Frame for process plug assembly 5500, Process plug assembly mounting plate; 5600, Oil dipping assembly; 5601, Oil box; 5700, Process plug assembly valve body clamping mechanism; 7100, Pilot valve transfer mechanism; 7200, Pilot valve bracket; 7201, Pilot valve bracket body; 7202, Pilot valve bracket actuator; 7300, Pilot valve assembly valve body clamping mechanism; 7301, No. 3 positioning mounting plate; 7302, No. 3 longitudinal guide rail; 7303, Longitudinal sliding plate; 7304, First base 7305, Second base plate; 7306, First gripper (No. 3); 7307, Second gripper (No. 3); 7308, Guide rack; 7309, Guide gear; 7400, Screw feeding and tightening mechanism; 7401, Tightening mounting base plate; 7402, X-axis guide rail for pilot valve tightening; 7403, X-axis slide for pilot valve tightening; 7404, X-axis lead screw for pilot valve tightening; 7405, X-axis motor for pilot valve tightening; 7406, Y-axis guide rail for pilot valve tightening; 74 7407. Y-axis slide for pilot valve tightening; 7408. Y-axis lead screw for pilot valve tightening; 7409. Y-axis motor for pilot valve tightening; 7410. Screw tightening gun; 7411. Belt; 7412. Screw feeding tube; 7500. Pilot valve visual inspection mechanism; 7501. Pilot valve inspection frame; 7502. Pilot valve inspection table; 7503. Pilot valve positioning frame; 7504. Pilot valve positioning seat; 7505. Pilot valve camera; 7506. Defective pilot valve storage rack. Detailed Implementation

[0068] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0069] In the description of the embodiments of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0070] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this utility model based on the specific circumstances.

[0071] In this embodiment of the utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0072] In the description of this specification, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Furthermore, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples, to make the objectives, technical solutions, and advantages of the present invention clearer. The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0073] The following is combined Figures 1 to 49 This invention describes a second-stage process plug assembly system and an electro-hydraulic directional valve assembly line provided by an embodiment of the present invention. It should be understood that the following description is merely an illustrative embodiment of the present invention and does not constitute any particular limitation on the present invention.

[0074] One embodiment of this utility model provides an electro-hydraulic directional valve assembly line, such as... Figure 1 and Figure 2 As shown, it includes: a valve body feeding system 1, which is used to feed valve bodies; a valve core assembly system 3, which is located downstream of the valve body feeding system 1 and is used to feed, inspect, and assemble valve cores; a valve core tightening system 4, which is located downstream of the valve core assembly system 3 and is used to tighten valve cores; and a transfer system 2, which is located between the valve body feeding system 1, the valve core assembly system 3, and the valve core tightening system 4.

[0075] The electro-hydraulic directional valve assembly line provided by this utility model includes a valve body feeding system 1, a valve core assembly system 3, a valve core tightening system 4, and a transfer system 2. The transfer system 2 is located between the valve body feeding system 1, the valve core assembly system 3, and the valve core tightening system 4. During operation, the valve body feeding system 1 feeds the valve body to the corresponding position in the transfer system 2. The transfer system 2 transfers the valve body to the valve core assembly system 3, where the valve core assembly system 3 inserts the valve core into the valve body. The transfer system 2 then transfers the valve body with the inserted valve core to the valve core tightening system 4, where the valve core tightening system 4 tightens the valve core to the valve body.

[0076] As described above, by integrating the valve body feeding system 1, the valve core assembly system 3, the valve core tightening system 4, and the cooperating transfer system 2, the valve body feeding and valve core assembly processes in the electro-hydraulic directional valve are automated. This significantly reduces the labor intensity and assembly time of manual operations and greatly improves assembly efficiency. At the same time, compared with manual assembly, this electro-hydraulic directional valve assembly line can improve the consistency of valve core assembly, effectively solving the problems of unstable quality and limited large-scale production capacity in traditional manual assembly, and providing a reliable guarantee for the high-quality and large-scale production of electro-hydraulic directional valves.

[0077] In one embodiment of this utility model, such as Figures 3 to 6 As shown, the valve body loading system 1 includes a first process plug assembly station, a dual-axis positioner 1100, a valve body bracket 1200, and a valve body transfer mechanism 1300. The dual-axis positioner 1100 is placed at the first process plug assembly station. The valve body bracket 1200 is located beside the first process plug assembly station, and the valve body transfer mechanism 1300 can transfer the valve body between the valve body bracket 1200 and the dual-axis positioner 1100. During assembly, the valve body transfer mechanism 1300 transfers the valve body from the valve body bracket 1200 to the dual-axis positioner 1100. The dual-axis positioner 1100 can support and fix the valve body. Simultaneously, the dual-axis positioner 1100 rotates to adjust the orientation of the valve body, allowing the five end faces of the valve body to rotate sequentially to positions close to the operator, so that the operator can assemble the first process plug one by one on each end face of the valve body.

[0078] As described above, the valve body is automatically transported by the valve body transfer mechanism 1300. Combined with the dual-axis positioner 1100, the valve body is rotated at multiple angles so that the five end faces face the operator in sequence. This significantly simplifies the valve body posture adjustment process and avoids the burden of traditional manual handling and rotation. Its integrated collaborative operation mode not only greatly improves the efficiency and consistency of process assembly, but also reduces labor intensity, fundamentally solving the problems of cumbersome operation and low efficiency in the existing technology.

[0079] In one embodiment of this utility model, a manual operation area is provided at the No. 1 process assembly station, and the manual operation area is located near the dual-axis positioner 1100.

[0080] The dual-axis positioner 1100 includes: a positioner body, which is placed at the first process plug assembly station and is used to support and adjust the position of the valve body; and a positioner operation panel 1104, which is connected to the positioner body and is used to control the working status of the positioner body. The positioner operation panel 1104 is located away from the manual operation area.

[0081] Specifically, such as Figures 3 to 5 As shown, the positioner body is placed on the No. 1 process plug assembly station. It can support and fix the valve body. At the same time, the positioner body can rotate to adjust the orientation of the valve body, so that the five end faces of the valve body can be rotated one by one to a position closer to the operator. The manual operation area is set next to the positioner body, where the operator can stand and assemble the No. 1 process plug on the valve body.

[0082] The positioner control panel 1104 is connected to the positioner body and can control the working status of the positioner body. For example, the working status includes at least starting the positioner body, stopping the positioner body, and controlling the rotation speed and direction of rotation when starting. Normally, when the operator is in the manual operation area performing assembly operations, the positioner body is in a stopped state. When the assembly of process plug #1 on a certain end face is completed, the operator needs to walk to the positioner control panel 1104 to adjust the positioner body's state so that the other end face to be assembled on the valve body rotates to a position convenient for manual assembly. After adjustment, the positioner body returns to its current stopped state, and the operator walks back to the manual operation area to perform the corresponding assembly operation. This cycle continues until the assembly of process plug #1 on all five end faces of the valve body is completed. (Normally, the valve body is a cuboid structure with six end faces. One end face does not need to be fitted with the No. 1 process plug. This end face is the fixed end face with the positioner body. The other five end faces need to be fitted with the No. 1 process plug.) By setting the positioner operation panel 1104 in a position far away from the manual operation area, it can be ensured that when the positioner body is in motion, the operator is always in a position far away from the manual operation area, that is, far away from the positioner body, thus ensuring the safety of the operator.

[0083] In one embodiment of this utility model, such as Figures 3 to 5As shown, the valve body feeding system 1 also includes: a safety light curtain 1400, which is installed in the manual operation area and is used to detect the personnel in the manual operation area; and a safety control unit, which is connected to the safety light curtain 1400 and the positioner body and is used to control the working state of the positioner body based on the detection result of the safety light curtain 1400.

[0084] Furthermore, in one embodiment of this utility model, when the safety light curtain 1400 detects that there are staff members in the manual operation area, the safety control unit controls the positioner body to stop changing position.

[0085] In other words, a safety light curtain 1400 is installed in the manual operation area. When a worker is standing in the area, the safety light curtain 1400 is in a light-blocking state. When no worker is in the area, the safety light curtain 1400 is in an open state. During the assembly process, when the safety light curtain 1400 detects a worker standing in the area, the safety control unit can lock the positioner body. This means that in this state, the positioner body cannot perform any movement. This further ensures the safety of workers in the manual operation area. When the safety light curtain 1400 detects no worker in the area, the safety control unit unlocks the positioner body, allowing the positioner body to adjust its movements based on the operation of the positioner control panel 1104.

[0086] In one embodiment of this utility model, the displacement body includes: a base 1101; a turntable 1102, which is rotatably connected to the base 1101 and is capable of rotating about a horizontal axis relative to the base 1101; a worktable 1103, which is rotatably connected to the turntable 1102 and is capable of rotating about an axis perpendicular to the horizontal axis; and an adsorption magnet connected to the worktable 1103.

[0087] In one embodiment of the present invention, the valve body transfer mechanism 1300 includes: a valve body transfer manipulator; and a valve body transfer magnet connected to the end of the valve body transfer manipulator.

[0088] For example, such as Figures 3 to 5As shown, a U-shaped groove is formed on the base 1101, and the turntable 1102 is a U-shaped platform structure adapted to the U-shaped groove. The U-shaped platform is connected to the U-shaped groove via a horizontal axis. A worktable 1103 is provided on the concave platform of the U-shaped platform. The worktable 1103 can rotate relative to the U-shaped platform, and the axis of rotation is perpendicular to the horizontal axis. Adsorption magnets are laid and connected on the surface of the worktable 1103. The end face of the valve body can be attached to and fixed to the adsorption magnet. A valve body transfer magnet is provided at the end of the valve body transfer robot. For example, when the valve body transfer magnet is energized, it has magnetic attraction capability; when the valve body transfer magnet is de-energized, it loses its magnetic attraction capability. When assembling the first process plug, the valve body transfer robot can move to the valve body bracket 1200, where the valve body transfer magnet adsorbs the valve body, transfers the valve body to the worktable 1103, and releases the valve body, which is then fixed by the adsorption magnet. By adjusting the rotation angle of the U-shaped table and the worktable 1103, the orientation of the valve body can be adjusted so that the operator can perform the assembly operation of the No. 1 process plug on each end face of the valve body.

[0089] The valve body transfer mechanism 1300 can also transfer the valve body between the twin-axis positioner 1100 and the transfer system 2 of the electro-hydraulic directional valve assembly line. More specifically, in the electro-hydraulic directional valve assembly line, the valve body that has completed the assembly of the first process plug can be transferred to the valve core loading and inspection assembly system via the transfer system 2 to assemble the valve core into the valve body. The valve body transfer mechanism 1300 in the valve body loading system 1 can transfer the valve body that has completed the assembly of the first process plug on the twin-axis positioner 1100 to the transfer system 2 of the electro-hydraulic directional valve assembly line, so that the transfer system 2 can transfer the valve body to the next assembly process.

[0090] In one embodiment of this utility model, the valve body feeding system 1 further includes: a first process plug bracket 1500, which is placed between the first process plug assembly station and the valve body bracket 1200.

[0091] In another embodiment of the present invention, the valve body feeding system 1 further includes: a tool rack 1600, which is placed on the side of the first process plug assembly station away from the first process plug bracket 1500; and an assembly tool 1700, which is placed on the tool rack 1600.

[0092] like Figures 3 to 6As shown, to facilitate the transfer of the valve body by the valve body transfer mechanism 1300 between the twin-axis positioner 1100 and the transfer system 2 of the electro-hydraulic directional valve assembly line, the No. 1 process plug assembly station can be set on the side of the transfer system 2, corresponding to the upstream position of the valve core loading and inspection assembly system. A tool rack 1600 is placed between the transfer system 2 and the No. 1 process plug assembly station, and the tool rack 1600 holds the assembly tools 1700 required for assembly. For example, the assembly tools 1700 include at least a tightening tool for the No. 1 process plug. A No. 1 process plug bracket 1500 is placed on the other side of the No. 1 process plug assembly station to allow workers to retrieve the No. 1 process plug during assembly. Since the valve body can be automatically transferred by the valve body transfer mechanism 1300, the valve body bracket 1200 can be positioned close to the valve body transfer mechanism 1300 but slightly further away from the No. 1 process plug assembly station than the No. 1 process plug bracket 1500.

[0093] In one embodiment of this utility model, such as Figures 7 to 11 As shown, the valve core assembly system 3 includes a valve core transfer mechanism 3100, a valve core placement area, a valve core bracket 3200, and a valve core indexing actuator 3300. The valve core placement area is located beside the valve core transfer mechanism 3100, and the valve core bracket 3200 is placed within it. The valve core bracket 3200 is used to centrally place valve cores. At least two valve core bearing areas are provided on the valve core bracket 3200. The valve core indexing actuator 3300 is connected to the valve core bracket 3200 and can drive the valve core bracket 3200 to perform indexing movements, so that one valve core bearing area on the valve core bracket 3200 is positioned closer to the valve core transfer mechanism 3100 to form a valve core gripping area 3201, while the remaining valve core bearing areas are positioned further away from the valve core transfer mechanism 3100 to form a valve core loading area 3202. The valve core transfer mechanism 3100 can grip and transfer the valve cores within the valve core gripping area 3201. The valve core feeding area 3202 is used for manually feeding valve cores. As a result, the valve core feeding area 3202 and the valve core gripping area 3201 can be completely separated into two areas: one far away from the valve core transfer mechanism 3100 and the other close to the valve core transfer mechanism 3100.

[0094] As described above, by driving the valve core bracket 3200, which has multiple valve core bearing areas, through the valve core dividing driver 3300 to perform indexing movement, the valve core loading area 3202 and the valve core gripping area 3201 are completely separated in space. This achieves regional isolation and parallel operation of manual loading and mechanical transfer operations, which not only fundamentally eliminates the safety risks of human-machine interference and significantly improves the inherent safety of the production process, but also allows manual loading and mechanical gripping to be carried out simultaneously, greatly reducing the waiting time in the assembly process, thereby effectively shortening the assembly cycle and improving the overall production efficiency and the stability of the production rhythm.

[0095] In one embodiment of this utility model, the indexing motion is a rotational motion, and the fixed angle of the rotational motion is 180°; the number of valve core bearing areas is two, and the two valve core bearing areas are symmetrically arranged about the rotation axis of the valve core bracket 3200.

[0096] Furthermore, in one embodiment of this utility model, there are two valve core placement areas, which are respectively located on both sides of the valve core transfer mechanism 3100. Each valve core placement area is equipped with a valve core bracket 3200, and each valve core bracket 3200 is driven by a corresponding valve core splitter driver 3300.

[0097] For example, such as Figure 10 and Figure 11 As shown, the valve core bracket 3200 includes a valve core placement frame 3203 and a valve core platform 3204. The valve core platform 3204 is horizontally positioned and connected to the valve core placement frame 3203. The valve core platform 3204 is capable of rotating relative to the valve core placement frame 3203 about a vertical axis. A valve core splitter actuator 3300 is connected to the valve core platform 3204 and is capable of driving the valve core platform 3204 to rotate 180° about a vertical axis. Two valve core bearing areas are symmetrically arranged along the center of the vertical axis on the valve core platform 3204. Multiple valve core trays 3205 are placed at intervals in each valve core bearing area. The valve core trays 3205 are used to hold valve cores, and each valve core tray 3205 can hold one or more valve cores. Each valve core tray 3205 is provided with a limiting plate 3206 around its perimeter to limit the valve core tray 3205 and prevent it from being misaligned or falling off.

[0098] During operation, the valve core is driven by the segmentation driver 3300 to rotate the valve core bracket 3200 by 180°, so that one valve core bearing area on the valve core platform 3204 is positioned closer to the valve core transfer mechanism 3100 to form the valve core gripping area 3201, while the other valve core bearing area is positioned further away from the valve core transfer mechanism 3100 to form the valve core loading area 3202. The valve core is then driven by the segmentation driver 3300 to rotate the valve core bracket 3200 by 180° again, so that the valve core bearing area on the valve core platform 3204 that was originally in the valve core gripping area 3201 rotates to the valve core loading area 3202, and the valve core bearing area that was originally in the valve core loading area 3202 rotates to the valve core gripping area 3201. This cycle repeats continuously.

[0099] A valve core placement area can be provided on each side of the valve core transfer mechanism 3100, and a valve core bracket 3200 is placed in each valve core placement area. Each valve core bracket 3200 is driven by a valve core split driver 3300.

[0100] In one embodiment of this utility model, such as Figures 7 to 9 As shown, the valve core assembly system 3 also includes: a valve body clamping mechanism 3400 for valve core assembly, which is used to clamp the valve body and is located at the valve core assembly position on the transfer system 2 in the electro-hydraulic directional valve assembly line; and a valve body grease injection mechanism 3500, which is located beside the valve body clamping mechanism 3400 for injecting grease into the valve core insertion hole of the valve body inside the valve body clamping mechanism 3400.

[0101] In one embodiment of this utility model, such as Figure 12 As shown, the valve body clamping mechanism 3400 for valve core assembly includes: a first positioning mounting plate 3401; a first longitudinal guide rail 3402, which is longitudinally connected to the first positioning mounting plate 3401; a first gripper connecting plate 3403, which is slidably connected to the first longitudinal guide rail 3402; a first longitudinal movement drive mechanism, which is connected to the first gripper connecting plate 3403; a first transverse movement guide rail 3404, which is transversely connected to the first gripper connecting plate 3403; a first first gripper 3405, which is slidably connected to the first transverse movement guide rail 3404; and a first second gripper. 3406, the first second gripper 3406 is slidably connected to the first transverse guide rail 3404; the first first transverse drive mechanism is connected to the first first gripper 3405; the first second transverse drive mechanism is connected to the first second gripper 3406; the first first positioning pin 3407 is located on the side of the first first gripper 3405 near the first second gripper 3406 and is adapted to a positioning hole on one side of the valve body; the first second positioning pin is located on the side of the second second gripper 3406 near the first first gripper 3405 and is adapted to a positioning hole on the other side of the valve body.

[0102] Furthermore, in one embodiment of this utility model, such as Figure 13As shown, the valve body grease injection mechanism 3500 includes: a grease injection X-axis guide rail 3501, positioned near the valve body clamping mechanism 3400 for valve core assembly; a grease injection X-axis slider 3502, slidably connected to the grease injection X-axis guide rail 3501; a grease injection X-axis drive mechanism, connected to the grease injection X-axis slider 3502; a grease injection Y-axis guide rail 3503, connected to the grease injection X-axis slider 3502; and a grease injection Y-axis slider 3504 for grease injection... A Y-axis slider 3504 is slidably connected to a Y-axis slide rail; a Y-axis drive mechanism for grease injection is connected to the Y-axis slider 3504 for grease injection; a Z-axis guide rail 3505 for grease injection is connected to the Y-axis slider 3504 for grease injection; a grease spraying connecting block 3506 is slidably connected to the Z-axis guide rail 3505 for grease injection; a Z-axis drive mechanism for grease injection is connected to the grease spraying connecting block 3506; and a conical grease spraying head 3507 is connected to the grease spraying connecting block 3506.

[0103] Specifically, such as Figures 7 to 9 As shown, the electro-hydraulic directional valve assembly line includes a transfer system 2. The transfer system 2 transfers the valve bodies fed by the valve body feeding system 1 to the valve core assembly system 3. A valve body clamping mechanism 3400 for valve core assembly is located on the transfer system 2 at a position corresponding to the valve core assembly location. At the valve core assembly location, a corresponding limiting and lifting mechanism is provided, which lifts the valve body that has moved from the transfer system 2 to below the valve body clamping mechanism 3400, allowing the valve body to be clamped by the valve body clamping mechanism 3400. A valve core assembly frame is provided at a position corresponding to the valve body clamping mechanism 3400. The valve core assembly frame is placed on the ground and provides an installation position for the valve body clamping mechanism 3400, forming a protective cover.

[0104] A first positioning mounting plate 3401 is fixed to the valve core assembly frame, and a first longitudinal guide rail 3402 is connected to it. "Longitudinal" refers to the vertical direction, or the up-down direction. A first gripper connecting plate 3403 is slidably connected to the first longitudinal guide rail 3402, and a first transverse guide rail 3404 is connected to the first gripper connecting plate 3403. "Transverse" refers to the direction located in the horizontal plane and parallel to the valve body transfer direction of the transfer system 2. A first gripper 3405 and a second gripper 3406 are slidably mounted on the first transverse guide rail 3404. The first longitudinal movement drive mechanism can drive the first gripper connecting plate 3403 to move the first gripper 3405 and the second gripper 3406 longitudinally. The first lateral movement drive mechanism can drive the first gripper 3405 to move closer to or away from the second gripper 3406, and the first lateral movement drive mechanism can drive the second gripper 3406 to move closer to or away from the first gripper 3405. Furthermore, a first positioning pin 3407 and a second positioning pin are respectively provided on the inner sides of the first gripper 3405 and the second gripper 3406. The first positioning pin 3407 and the second positioning pin are respectively adapted to the positioning holes on the two end faces of the valve body. Therefore, the valve body clamping mechanism 3400 for valve core assembly can reliably clamp the corresponding valve body.

[0105] For example, the first longitudinal drive mechanism, the first lateral drive mechanism, and the second lateral drive mechanism include, but are not limited to, drive cylinders.

[0106] A valve body grease injection mechanism 3500 is provided beside the valve body clamping mechanism 3400 for valve core assembly. Specifically, as... Figures 7 to 9 and Figure 13 As shown, the X-axis guide rail 3501 for grease injection is arranged along the X-direction to a position near the clamping mechanism for valve core assembly. The X-direction refers to the direction in the horizontal plane that is parallel to the valve body rotation direction of the transfer system 2. A grease injection X-axis slider 3502 is slidably connected to the grease injection X-axis guide rail 3501. A grease injection Y-axis guide rail 3503 is mounted on the grease injection X-axis slider 3502. The Y-direction refers to the direction in the horizontal plane that is perpendicular to the valve body rotation direction of the transfer system 2. A grease injection Y-axis slider 3504 is slidably connected to the grease injection Y-axis guide rail 3503. A grease injection Z-axis guide rail 3505 is mounted on the Y-axis slider. A grease spraying connection block 3506 is slidably connected to the grease injection Z-axis guide rail. A conical grease injection head is mounted on the grease spraying connection block 3506. The grease injection position of the conical grease injection head can be adjusted by adjusting the grease injection X-axis drive mechanism, the grease injection Y-axis drive mechanism, and the grease injection Z-axis drive mechanism. The conical grease injection head has multiple grease injection holes on its side wall. A grease supply line can be connected to the conical grease injection head to supply grease. By adjusting the insertion depth of the conical grease injection head, it can be adapted to valve core insertion holes of different diameters on the valve body.

[0107] In addition, a model scanning mechanism and control device can be set in the valve core assembly system 3. For example, a model QR code is set on the valve body, and the number and size of the valve core insertion holes are different on different models of valve bodies. The control device is connected to the model scanning mechanism and the X-axis drive mechanism, Y-axis drive mechanism, and Z-axis drive mechanism for grease injection. Based on the model scanning result of the valve body, the working state of the X-axis drive mechanism, Y-axis drive mechanism, and Z-axis drive mechanism for grease injection are controlled respectively, thereby adjusting the number of grease injections of the conical grease injection head, the path of each grease injection operation, and the insertion depth of the conical grease injection head during each grease injection.

[0108] In one embodiment of this utility model, such as Figures 7 to 9 and Figure 14 and Figure 15 As shown, the valve core assembly system 3 also includes: a valve core visual inspection unit 3600, which is located beside the valve core transfer mechanism 3100 and is used to photograph and inspect the O-ring installation status of the valve core; a defective valve core holder, which is located beside the valve core transfer mechanism 3100; and an oil injection lubrication unit 3700, which is located beside the valve core transfer mechanism 3100 and is used to lubricate valve cores with qualified O-ring installation. The valve core transfer mechanism 3100 can transfer or rotate the valve core between the valve core bracket 3200, the valve core visual inspection unit 3600, the defective valve core holder, the oil injection lubrication unit 3700, and the valve core insertion hole of the valve body in the valve body clamping mechanism 3400 for valve core assembly.

[0109] Furthermore, in one embodiment of this utility model, such as Figure 14 As shown, the valve core visual inspection unit 3600 includes: a protective frame 3601, which is disposed beside the valve core transfer mechanism 3100; a light shield 3602, which is connected to the protective frame 3601; a valve core inspection camera 3603, which is disposed inside the light shield 3602 on the protective frame 3601; a camera protective cover 3604, which covers the outside of the valve core inspection camera 3603; and a light source 3605, which is installed inside the protective frame 3601 near the valve core inspection camera 3603.

[0110] Furthermore, in one embodiment of this utility model, such as Figure 15As shown, the oil injection lubrication unit 3700 includes: a lubrication frame 3701, which is disposed beside the valve core transfer mechanism 3100; a lubrication platform 3702, which is supported and connected to the lubrication frame 3701; a first valve core positioning block 3703, which is fixedly connected to the lubrication platform 3702; and a second valve core positioning block 3704, which is slidably connected to the lubrication platform 3702 and is capable of moving closer to or further away from the first valve core positioning block 3703. The valve core is slidable in a certain direction to clamp and position the valve core; the valve core positioning drive mechanism 3705 is connected to the second valve core positioning block 3704; the oil return seat 3706 is installed on the lubrication platform 3702, and the bottom of the oil return seat 3706 has an oil return hole; the lubrication seat 3707 is installed on the upper side of the oil return seat 3706, and the top of the lubrication seat 3707 has a lubrication insertion hole 3708, and the inner wall of the lubrication insertion hole 3708 has multiple oil injection holes spaced apart, which can communicate with the oil return hole.

[0111] In a more specific embodiment, such as Figures 7 to 9 ,as well as Figure 14 and Figure 15 As shown, the valve core visual inspection unit 3600 is located beside the valve core transfer mechanism 3100. For example, the protective frame 3601 of the valve core visual inspection unit 3600 can be mounted above the corresponding position in the transfer system 2. A light shield 3602 is installed on the protective frame 3601. A valve core inspection camera 3603 is installed inside the light shield 3602. A camera protective cover 3604 is provided on the valve core inspection camera 3603. A strip light source 3605 is set inside the light shield 3602 near the valve core inspection camera 3603. After the valve core transfer mechanism 3100 picks up the valve core from the valve core bracket 3200, it first moves to the position of the valve core inspection camera 3603 and performs multi-directional rotating imaging at the valve core inspection camera 3603. The valve core inspection camera 3603 can photograph and determine whether the O-ring installation status of the valve core is qualified. If the O-ring of the valve core is not installed correctly, the valve core transfer mechanism 3100 will transfer the defective product to the defective valve core shelf. Then, the valve core transfer mechanism 3100 will perform a new gripping and inspection operation.

[0112] If the O-ring of the valve core is installed correctly, the valve core transfer mechanism 3100 moves to the oil injection lubrication unit 3700 for oil injection lubrication. Specifically, the lubrication frame 3701 is placed beside the valve core transfer mechanism 3100, and a lubrication platform 3702 is connected to the lubrication frame 3701. The lubrication platform 3702 is a horizontal platform. A valve core positioning structure is provided on the lubrication platform 3702. The valve core positioning structure includes a first valve core positioning block 3703, a second valve core positioning block 3704, and a valve core positioning drive mechanism 3705. For example, both the first valve core positioning block 3703 and the second valve core positioning block 3704 are provided with V-shaped positioning grooves, which together can position and clamp the valve core. The first valve core positioning block 3703 is fixedly connected to the lubrication platform 3702, and the second valve core positioning block 3704 is slidably connected to the lubrication platform 3702. The valve core positioning drive mechanism 3705 can drive the second valve core positioning block 3704 to slide towards or away from the first valve core positioning block 3703 in order to clamp or release the valve core.

[0113] A return oil seat 3706 is also provided on the lubrication platform 3702, and a lubrication seat 3707 is fastened to the top of the return oil seat 3706. A lubrication insert hole 3708 is provided on the top of the lubrication seat 3707, and multiple oil injection holes are spaced apart on the side wall of the lubrication insert hole 3708. An oil injection supply device can communicate with the oil injection holes. The inner cavity of the return oil seat 3706 communicates with the lubrication insert hole 3708, and a return oil hole is provided at the bottom of the return oil seat 3706. The return oil hole can be connected to a return oil tank, etc., through a pipeline. When the oil injection supply device is in the oil supply state, the supplied oil can be sprayed through the oil injection holes onto the valve core inserted in the lubrication insert hole 3708. The oil flowing down the side wall of the lubrication insert hole 3708 into the return oil seat 3706 can be collected in the return oil tank through the return oil hole.

[0114] During the valve core oil injection operation, the valve core transfer mechanism 3100 first places the valve core in the clamping area between the first valve core positioning block 3703 and the second valve core positioning block 3704. After the first valve core positioning block 3703 and the second valve core positioning block 3704 position and clamp the valve core, the valve core is then re-grabbed and transferred to the lubrication insertion hole 3708 of the lubrication seat 3707. Thus, the method of positioning first and then re-grabbing for lubrication can improve the accuracy of the valve core transfer mechanism 3100 in transferring the valve core into the lubrication insertion hole 3708.

[0115] After the valve core oil lubrication operation is completed, the valve core transfer mechanism 3100 can transfer the valve core to the valve body between the first clamp 3405 and the second clamp 3406, and insert the valve core into the valve core insertion hole of the valve body.

[0116] In addition, the control device can also be connected to the valve core transfer mechanism 3100. Based on the scanning results of the model scanning mechanism, the control device can control the number of valve core feeding, inspection, oil spraying lubrication and insertion operations of the valve core transfer mechanism 3100 and the corresponding path.

[0117] In one embodiment of this utility model, such as Figures 16 to 24 As shown, the valve core tightening system 4 includes a valve core tightening gun 4100 and a valve core gun driving device 4200. The valve core gun driving device 4200 is connected to the valve core tightening gun 4100 and can drive the valve core tightening gun 4100 to move in the space near the valve body, so that the valve core tightening gun 4100 moves to the valve core assembly position on the valve body, so that the valve core tightening gun 4100 can perform automatic tightening operation at the corresponding position.

[0118] As described above, the valve core tightening system 4 achieves automated operation. The valve core gun drive device 4200 can precisely drive the valve core tightening gun 4100 to move to the valve core assembly position on the valve body and perform automatic tightening, thereby significantly improving tightening efficiency, reducing manual intervention, and ensuring the consistency and reliability of the tightening process, ultimately improving the overall valve production speed.

[0119] In one embodiment of this utility model, such as Figures 16 to 21 As shown, the valve core tightening system 4 further includes: a valve body clamping mechanism 4500 for tightening the valve core; the valve body clamping mechanism 4500 includes: a second positioning mounting plate 4501; a second longitudinal guide rail, which is longitudinally connected to the second positioning mounting plate 4501; a second gripper connecting plate, which is slidably connected to the second longitudinal guide rail; a second longitudinal movement drive mechanism, which is connected to the gripper connecting block; a second transverse movement guide rail, which is transversely connected to the second gripper connecting plate; a second first gripper 4502, which is slidably connected to the second transverse movement guide rail; and a second second gripper 4503. 03. The second gripper 4503 is slidably connected to the second transverse guide rail; the first transverse drive mechanism is connected to the first gripper 4502; the second transverse drive mechanism is connected to the second gripper 4503; the first positioning pin is located on the side of the first gripper 4502 near the second gripper 4503 and is adapted to the positioning hole on one side of the valve body; the second positioning pin is located on the side of the second gripper 4503 near the first gripper 4502 and is adapted to the positioning hole on the other side of the valve body.

[0120] For example, such as Figures 16 to 18As shown, a valve core tightening frame is provided at the position corresponding to the valve body clamping mechanism 4500 for tightening the valve core. The valve core tightening frame is placed on the ground and provides an installation position for the valve body clamping mechanism 4500 for tightening the valve core and forms a protective cover.

[0121] The second positioning mounting plate 4501 is fixed to the valve core tightening frame, and a second longitudinal guide rail is connected to it. Longitudinal refers to the vertical direction, or the up-down direction. A second gripper connecting plate is slidably connected to the second longitudinal guide rail, and a second transverse guide rail is connected to the second gripper connecting plate. Transverse refers to the direction within the horizontal plane and parallel to the valve body transfer direction of the transfer system 2. A second first gripper 4502 and a second second gripper 4503 are slidably mounted on the second transverse guide rail. The second longitudinal drive mechanism can drive the second gripper connecting plate to move the second first gripper 4502 and the second second gripper 4503 longitudinally. The second first transverse drive mechanism can drive the second first gripper 4502 to move closer to or away from the second second gripper 4503, and the second second transverse drive mechanism can drive the second second gripper 4503 to move closer to or away from the second first gripper 4502. Furthermore, a first positioning pin and a second positioning pin are respectively provided on the inner sides of the second first gripper 4502 and the second second gripper 4503. The first and second positioning pins are respectively adapted to the positioning holes on the two end faces of the valve body. Thus, the valve body clamping mechanism 4500 for tightening the valve core can reliably clamp the corresponding valve body.

[0122] For example, the second longitudinal drive mechanism, the second first transverse drive mechanism, and the second second transverse drive mechanism include, but are not limited to, drive cylinders.

[0123] According to one embodiment of the present invention, such as Figures 22 to 24 As shown, the valve core tightening system 4 also includes: a valve core tightening module frame 4300; a module mounting platform 4400, the module mounting platform 4400 being connected to the valve core tightening module frame 4300; and a valve core gun driving device 4200 being connected to the module mounting platform 4400.

[0124] In one embodiment of this utility model, such as Figures 22 to 24 As shown, the valve core gun drive device 4200 includes: a valve core tightening X-axis guide rail 4201, which is connected to the module mounting platform 4400; a valve core tightening X-axis slide 4202, which is slidably connected to the valve core tightening X-axis guide rail 4201; and a valve core tightening X-axis drive mechanism, which is connected to the valve core tightening X-axis slide 4202.

[0125] Furthermore, in one embodiment of this utility model, such as Figures 22 to 24As shown, the valve core gun drive device 4200 further includes: a valve core tightening Y-axis guide rail, which is connected to a valve core tightening X-axis slide 4202; a valve core tightening transverse slide plate 4203, which is slidably connected to the valve core tightening Y-axis guide rail; a valve core tightening longitudinal connecting plate 4204, one end of which is connected to the edge of the valve core tightening transverse slide plate 4203, and the other end of which extends along the Z-axis, with the valve core tightening gun 4100 connected along the Z-axis to the valve core tightening longitudinal connecting plate 4204; and a valve core tightening Y-axis drive mechanism, which is connected to the valve core tightening transverse slide plate 4203.

[0126] Specifically, such as Figures 22 to 24 As shown, a valve core tightening module frame 4300 is mounted on a valve core tightening frame. A module mounting platform 4400 is connected to the valve core tightening module frame 4300. A valve core tightening X-axis guide rail 4201 is provided on the module mounting platform 4400 along the X-axis. The X-axis refers to the direction in the horizontal plane that is parallel to the valve body transport direction of the transfer system 2. A valve core tightening X-axis slide 4202 is slidably connected to the valve core tightening X-axis guide rail 4201 and is driven to slide by a valve core tightening X-axis drive mechanism. A valve core tightening Y-axis guide rail is provided on the valve core tightening X-axis slide 4202 along the Y-axis. The Y-axis refers to the direction in the horizontal plane that is perpendicular to the valve body transport direction of the transfer system 2. A valve core tightening transverse slide plate 4203 is slidably connected to the valve core tightening Y-axis guide rail. One end of the longitudinal connecting plate 4204 for tightening the valve core is connected to the edge of the transverse sliding plate 4203 for tightening the valve core, and the other end of the longitudinal connecting plate 4204 for tightening the valve core extends along the Z-direction. The Z-direction refers to the direction perpendicular to the valve body transfer direction of the transfer system 2 in the vertical plane. The transverse sliding plate 4203 and the longitudinal connecting plate 4204 for tightening the valve core form an L-shaped structure. The Y-direction drive mechanism for tightening the valve core drives the transverse sliding plate 4203 to slide together with the longitudinal connecting plate 4204. Thus, the operating position of the valve core tightening gun 4100 can be adjusted.

[0127] Furthermore, in one embodiment of this utility model, such as Figures 22 to 24 As shown, the valve core gun driving device 4200 further includes: a first limiting block 4205 for tightening the valve core, which is disposed on one side of the X-axis slide 4202 for tightening the valve core; a second limiting block 4206 for tightening the valve core, which is disposed on the other side of the X-axis slide 4202 for tightening the valve core; a third limiting block for tightening the valve core, which is disposed on one side of the transverse slide 4203 for tightening the valve core; and a fourth limiting block for tightening the valve core, which is disposed on the other side of the transverse slide 4203 for tightening the valve core.

[0128] With this structural arrangement, the first limiting block 4205 and the second limiting block 4206 for tightening the valve core together limit the X-axis sliding range of the valve core tightening gun 4100. The third limiting block and the fourth limiting block for tightening the valve core together limit the Y-axis sliding range of the valve core tightening gun 4100.

[0129] This invention does not limit the specific types of the X-axis drive mechanism and the Y-axis drive mechanism for tightening the valve core. For example, to improve the position adjustment accuracy, the X-axis drive mechanism and the Y-axis drive mechanism for tightening the valve core can be configured as servo electric cylinders.

[0130] In one embodiment of this utility model, the valve core tightening gun 4100 includes: a valve core gun body 4101, which is connected to a valve core tightening longitudinal connecting plate 4204; a valve core tightening bit 4102, which is connected to the valve core gun body 4101; a valve core tightening sensing module, which is connected to the valve core tightening bit 4102 and is used to detect the torque, speed and tightening depth of the valve core tightening bit 4102; and a valve core tightening control device, which is connected to the valve core tightening sensing module and the valve core tightening bit 4102 and is used to control the working state of the valve core tightening bit 4102 based on the detection results of the valve core tightening sensing module. For example, if the torque of the screwdriver bit used to tighten the valve core reaches a certain limit, but the tightening depth does not reach the preset value, it indicates that the threads between the valve core and the valve body are engaged. The valve core tightening control device can control the valve core to be driven out by the tightening screwdriver bit 4102 and then repeatedly tightened.

[0131] The valve core assembly system 3 is equipped with a model scanning mechanism and a control device. The control device can be connected to the valve core tightening bit 4102 and can control the working state of the valve core tightening bit 4102 based on the model of the valve body. For example, the working state includes at least the number of tightening operations and the path of each tightening operation.

[0132] In one embodiment of the present invention, the electro-hydraulic directional valve assembly line further includes: a second process plug assembly system 5, which is located downstream of the valve core tightening system 4. The second process plug assembly system 5 is used for feeding materials and assembling and tightening the second process plug.

[0133] The transfer system 2 can be extended from the valve core tightening system 4 to the second process plug assembly system 5.

[0134] In one embodiment of this utility model, such as Figures 25 to 33As shown, the No. 2 process plug assembly system 5 includes a process plug tightening mechanism 5100, a process plug feeding mechanism 5200, and a tightening mechanism drive device 5300. The process plug feeding mechanism 5200 is positioned beside the process plug tightening mechanism 5100 and can feed the No. 2 process plug to the process plug tightening mechanism 5100. The tightening mechanism drive device 5300 is connected to the process plug tightening mechanism 5100 and is used to drive the process plug tightening mechanism 5100 to move within the space near the valve body, so that the process plug tightening mechanism 5100 moves to a preset valve body assembly position, allowing the process plug tightening mechanism 5100 to perform the tightening operation of the No. 2 process plug at the corresponding position.

[0135] As described above, by setting up the process plug tightening mechanism 5100, the automatic feeding mechanism, and the tightening mechanism drive device 5300, the automatic feeding, precise positioning, and efficient tightening of the No. 2 process plug are achieved, which greatly improves the assembly efficiency, effectively overcomes the problem of low efficiency of manual operation, and reduces labor intensity. It is suitable for the batch automated assembly production of process plugs for electro-hydraulic directional valve bodies.

[0136] In one embodiment of the present invention, the process plug feeding mechanism 5200 includes: a feeding pipe for conveying the second process plug; a receiving platform 5201; and a pushing mechanism that moves with the receiving platform 5201. The pushing mechanism is used to drive the receiving platform 5201 to move between the outlet of the feeding pipe and the process plug tightening mechanism 5100.

[0137] In one embodiment of the present invention, the process blockage feeding mechanism 5200 further includes a process blockage feeding detection device, which is disposed at the outlet of the feeding pipe and is used to detect the feeding status of the second process blockage.

[0138] In one embodiment of this utility model, the second process plug assembly system 5 further includes: a process plug assembly frame 5400; and a process plug assembly mounting plate 5500, which is connected to the process plug assembly frame 5400.

[0139] The tightening mechanism drive device 5300 includes: an X-axis guide rail 5301 for process plug assembly, connected to a mounting plate 5500 for process plug assembly; an X-axis slide 5302 for process plug assembly, slidably connected to the X-axis guide rail 5301; an X-axis drive mechanism for process plug assembly, connected to the X-axis slide 5302; a connecting plate 5303 for process plug assembly, connected to the X-axis slide 5302; a Z-axis guide rail 5304 for process plug assembly; and a Z-axis guide rail 5305 for process plug assembly. 304 is connected to the connecting plate 5303 for process plug assembly; Z-axis slider 5305 for process plug assembly is slidably connected to Z-axis guide rail 5304 for process plug assembly; Z-axis drive mechanism for process plug assembly is connected to Z-axis slider 5305 for process plug assembly; X-axis first limiting block 5306 for process plug assembly is disposed on one side of X-axis slide table 5302 for process plug assembly; X-axis second limiting block 5307 for process plug assembly is disposed on the other side of X-axis slide table 5302 for process plug assembly.

[0140] Furthermore, in one embodiment of this utility model, the process plug tightening mechanism 5100 includes: a tightening gun 5101 for assembling the process plug, which is slidably connected to a Z-axis slider 5305 for assembling the process plug; a tightening bit 5102 for assembling the process plug, which is connected to the tightening gun 5101; a sensing module for assembling the process plug, which is connected to the tightening bit 5102 and used to detect the torque, speed, and tightening depth of the tightening bit 5102; and a control device for assembling the process plug, which is connected to the sensing module and the tightening bit 5102 and used to control the working state of the tightening bit 5102 based on the detection results of the sensing module.

[0141] In one embodiment of the present invention, the process plug tightening mechanism 5100 further includes a negative pressure adsorption module, which is connected to the tightening bit 5102 for assembling the process plug, so that the tightening bit 5102 for assembling the process plug can adsorb the second process plug on the receiving platform 5201.

[0142] In another embodiment of the present invention, the No. 2 process plug assembly system 5 further includes an oil dipping component 5600, which is disposed on the side of the process plug tightening mechanism 5100 and is used to lubricate the No. 2 process plug on the process plug tightening mechanism 5100.

[0143] In a more specific embodiment of the present invention, the oil dipping assembly 5600 includes: an oil box 5601 for holding oil; and an oil box drive mechanism connected to the oil box 5601 and used to drive the oil box 5601 to move toward or away from the tightening bit 5102 for the process plug assembly.

[0144] In one embodiment of the present invention, the second process plug assembly system 5 further includes a valve body clamping mechanism 5700 for assembling the process plug. The valve body clamping mechanism 5700 is disposed below the process plug tightening mechanism 5100 and is used to clamp the valve body.

[0145] Specifically, such as Figures 25 to 33 As shown, a corresponding frame structure is provided at the corresponding position of the No. 2 process plug assembly system 5 in the transfer system 2 of the electro-hydraulic directional valve assembly line. A process plug assembly frame 5400 is connected to this frame structure. A horizontal process plug assembly mounting plate 5500 is connected to the process plug assembly frame 5400. An X-axis guide rail 5301 for process plug assembly is provided along the X-direction of the mounting plate 5500. The X-direction refers to the spacing direction of the No. 2 process plugs in the horizontal plane. The X-axis slide table 5302 for process plug assembly is slidably connected to the X-axis guide rail 5301 for process plug assembly and is driven to slide by the X-axis drive mechanism for process plug assembly.

[0146] A connecting plate 5303 for process plug assembly is provided on the X-axis slide table 5302 for process plug assembly. For example, the connecting plate 5303 for process plug assembly includes a horizontal plate and a vertical plate, which are connected to form an L-shaped structure. The horizontal plate is connected to the X-axis slide table 5302 for process plug assembly, and the vertical plate is arranged along the Z-axis. The Z-axis guide rail 5304 for process plug assembly is arranged along the Z-axis onto the vertical plate. The Z-axis refers to the tightening movement direction of the second process plug in the vertical plane. The Z-axis slider 5305 for process plug assembly is slidably connected to the Z-axis guide rail 5304 for process plug assembly and is driven to slide by the Z-axis drive mechanism for process plug assembly.

[0147] In addition, the first X-direction limiting block 5306 and the second X-direction limiting block 5307 for process blocking assembly, which are provided on both sides of the X-direction slide table 5302 for process blocking assembly, can limit the X-direction sliding range of the X-direction slide table 5302 for process blocking assembly.

[0148] A tightening gun 5101 for assembling process plugs is connected to a Z-axis slider 5305 for assembling process plugs. A tightening bit 5102 for assembling process plugs is connected to the end of the tightening gun 5101. A negative pressure adsorption module is installed on the tightening bit 5102. The negative pressure adsorption module can create negative pressure on the tightening bit 5102 to adsorb the second process plug. A receiving platform 5201 is located beside the tightening bit 5102, and a feeding pipe is located above the receiving platform 5201; or rather, the outlet of the feeding pipe is located above the receiving platform 5201. The second process plug in the feeding pipe can fall onto the receiving platform 5201 through its outlet. A pushing mechanism is connected to the receiving platform 5201, which can drive the receiving platform 5201 to move between the tightening bit 5102 and the outlet of the feeding pipe. A process plug feeding detection device is installed at the outlet of the feeding pipe to monitor the feeding status of the second process plug, or in other words, to monitor whether the feeding pipe has fed material onto the receiving platform 5201. An oil box 5601 is also slidably installed beside the tightening bit 5102 for assembling the process plug. An oil box drive mechanism can drive the oil box 5601 to move closer to or further away from the tightening bit 5102 for assembling the process plug.

[0149] In the specific operation process, the feeding pipe first conveys the No. 2 process plug to the receiving platform 5201. The pushing mechanism pushes the receiving tray, which in turn moves the No. 2 process plug on it to below the tightening bit 5102 for process plug assembly. The Z-axis drive mechanism for process plug assembly adjusts the height of the tightening bit 5102 so that the No. 2 process plug is attracted to the tightening bit 5102 by negative pressure. Subsequently, the oil box drive mechanism moves the oil box 5601 to below the tightening bit 5102 for process plug assembly. The Z-axis drive mechanism for process plug assembly drives the tightening bit 5102 downward to insert the No. 2 process plug into the oil box 5601 to dip in oil. After the oiling is completed, the Z-axis drive mechanism and the X-axis drive mechanism for the process plug assembly work together to adjust the tightening bit 5102 for the process plug assembly, so that the tightening bit 5102 for the process plug assembly will attract the second process plug to the corresponding position of the second process hole and perform the tightening operation of the second process plug.

[0150] Specifically, during the tightening process, the process plug assembly sensor module can detect the torque, speed, and tightening depth of the process plug assembly tightening bit 5102. The process plug assembly control device is used to control the working state of the process plug assembly tightening bit 5102 based on the detection results of the process plug assembly sensor module. For example, when the torque of the process plug assembly tightening bit 5102 reaches a certain limit value, but its tightening depth does not reach the preset value, it indicates that the thread between the second process plug and the corresponding second process hole is engaged. The process plug assembly control device can control the process plug assembly tightening bit 5102 to drive the second process plug out and then repeat the tightening operation.

[0151] The valve core assembly system 3 is equipped with a model scanning mechanism and a control device. The control device can be connected to the tightening bit 5102 for process plug assembly. It can control the working state of the tightening bit 5102 for process plug assembly based on the model of the valve body. For example, the working state includes at least the number of tightening operations and the path of each tightening operation.

[0152] During the assembly of process plug No. 2, the valve body needs to be clamped by the process plug assembly valve body clamping mechanism 5700 before operation. The specific structure of the process plug assembly valve body clamping mechanism 5700 is the same as the structure of the valve body clamping mechanism for clamping the valve core in the electro-hydraulic directional valve assembly line.

[0153] In one embodiment of this utility model, such as Figure 1 and Figure 2 As shown, the electro-hydraulic directional valve assembly line also includes: a pilot valve assembly system 7, which is located downstream of the valve core tightening system 4. The pilot valve assembly system 7 is used for feeding and assembling and tightening the pilot valve; the transfer system 2 can be extended from the No. 2 process plug assembly system 5 to the pilot valve assembly system 7.

[0154] Furthermore, in one embodiment of the present invention, the electro-hydraulic directional valve assembly line further includes: a valve body flipping system 6, which is disposed between the valve core tightening system 4 and the pilot valve assembly system 7. The valve body flipping system 6 is used to flip the valve body so as to assemble the pilot valve.

[0155] like Figures 47 to 49 As shown, the No. 2 process plug on the electro-hydraulic directional valve body is on the same end face as the valve core assembly surface, while the pilot valve mounting surface is on a different end face from the valve core assembly surface. After assembling the valve core and the No. 2 process plug, the valve body needs to be flipped using the valve body flipping system 6 to facilitate the assembly of the pilot valve. The valve body flipping system 6 can be any existing device capable of clamping and flipping the valve body.

[0156] In one embodiment of this utility model, such as Figures 34 to 46As shown, the pilot valve assembly system 7 includes a pilot valve transfer mechanism 7100, a pilot valve bracket 7200, a valve body clamping mechanism 7300 for pilot valve assembly, and a screw feeding and tightening mechanism 7400. The pilot valve bracket 7200 is positioned beside the pilot valve transfer mechanism 7100 and is used to hold the pilot valve. The valve body clamping mechanism 7300 is located on the transfer system 2 in the electro-hydraulic directional valve assembly line, near the pilot valve transfer mechanism 7100, and is used to clamp the valve body. The screw feeding and tightening mechanism 7400 is positioned above the valve body clamping mechanism 7300 and is used to feed and tighten the connecting screws between the pilot valve and the valve body.

[0157] During operation, the pilot valve transfer mechanism 7100 grabs the pilot valve from the pilot valve bracket 7200 and transfers the pilot valve to the valve body clamped by the pilot valve assembly valve body clamping mechanism 7300. The screw feeding and tightening mechanism feeds screws at the pilot valve and tightens the screws to connect the pilot valve and the valve body.

[0158] As described above, by integrating the pilot valve transfer mechanism 7100, the pilot valve assembly valve body clamping mechanism 7300, and the screw feeding and tightening mechanism 7400, the entire process of pilot valve handling, valve body positioning, and screw feeding and tightening is fully automated. This effectively solves the problems of slow cycle time and high labor intensity in traditional manual assembly, significantly improves the assembly efficiency of pilot valves, and meets the requirements of large-scale manufacturing for production rhythm and reliability.

[0159] In one embodiment of this utility model, such as Figures 34 to 38 As shown, the pilot valve bracket 7200 includes: a pilot valve bracket 7200 body, on which two pilot valve carrying areas are provided, the two pilot valve carrying areas being symmetrically arranged about the rotation axis of the pilot valve bracket 7200 body; and a pilot valve bracket 7200 driver, which is connected to the pilot valve bracket 7200 body and is used to drive the pilot valve bracket 7200 body to rotate 180°, so that one pilot valve carrying area on the pilot valve bracket 7200 body is positioned on the side closer to the pilot valve transfer mechanism 7100 to form a pilot valve gripping area, while the other pilot valve carrying area is positioned on the side away from the pilot valve transfer mechanism 7100 to form a pilot valve feeding area.

[0160] The pilot valve bracket 7200 driver drives the pilot valve bracket 7200 body, which has two symmetrical pilot valve carrying areas, to perform a 180° split rotation movement. This completely separates the pilot valve loading area from the pilot valve gripping area in space, realizing the regional isolation and parallel operation of manual loading and mechanical transfer operations. This not only fundamentally eliminates the safety risks of human-machine interference and significantly improves the inherent safety of the production process, but also allows manual loading and mechanical gripping to be carried out simultaneously, greatly reducing the waiting time in the assembly process. This effectively shortens the assembly cycle and improves the overall production efficiency and the stability of the production rhythm.

[0161] For example, such as Figures 34 to 38 As shown, the pilot valve bracket 7200 body includes a pilot valve placement frame and a pilot valve platform. The pilot valve platform is horizontally positioned and connected to the pilot valve placement frame. The pilot valve platform can rotate relative to the pilot valve placement frame about a vertical axis. The pilot valve bracket 7200 actuator is connected to the pilot valve platform and can drive the pilot valve platform to rotate 180° around the vertical axis. Two valve core bearing areas are symmetrically arranged along the center of the vertical axis on the pilot valve platform. A pilot valve tray is placed in each pilot valve bearing area. Multiple pilot valves can be placed in each pilot valve tray. Limiting plates are provided around the perimeter of each pilot valve tray to limit the corresponding pilot valve tray and prevent the pilot valve tray from being misaligned or falling off.

[0162] During operation, the pilot valve bracket 7200 actuator drives the pilot valve platform to rotate 180°, positioning one pilot valve bearing area on the platform closer to the pilot valve transfer mechanism 7100 to form a pilot valve gripping area, while the other pilot valve bearing area is positioned away from the pilot valve transfer mechanism 7100 to form a pilot valve loading area. The pilot valve bracket 7200 actuator then drives the pilot valve platform to rotate another 180°, rotating the pilot valve bearing area previously in the gripping area to the loading area, and vice versa. This cycle repeats continuously.

[0163] In one embodiment of this utility model, such as Figures 34 to 36 as well as Figure 39 and Figure 40 As shown, the pilot valve assembly system 7 also includes a pilot valve visual inspection mechanism 7500, which is located beside the pilot valve transfer mechanism 7100 and is used to inspect the installation status of the O-rings on the pilot valve.

[0164] Furthermore, in one embodiment of this utility model, such as Figure 39 and Figure 40As shown, the pilot valve visual inspection mechanism 7500 includes: a pilot valve inspection frame 7501, which is located beside the pilot valve transfer mechanism 7100; a pilot valve inspection table 7502, which is connected to the pilot valve inspection frame 7501; a pilot valve positioning frame 7503, which is connected to the pilot valve inspection table 7502; and a pilot valve positioning seat 7504, which is connected to the pilot valve positioning frame 7501. A pilot valve positioning bracket 7503 is connected and used to position and place the pilot valve; a pilot valve camera 7505 is connected to the pilot valve positioning seat 7504 and is used to inspect the installation status of the pilot valve O-ring on the pilot valve positioning seat 7504; a defective pilot valve shelf 7506 is set on the side of the pilot valve inspection table 7502 away from the pilot valve positioning seat 7504 and is used to place defective pilot valves.

[0165] The pilot valve transfer mechanism 7100 is used to transfer the pilot valve between the valve bodies in the pilot valve bracket 7200, the pilot valve positioning seat 7504, the defective pilot valve shelf 7506, and the valve body clamping mechanism 7300 for pilot valve assembly.

[0166] Specifically, such as Figure 39 and Figure 41 As shown, the pilot valve transfer mechanism 7100 includes, but is not limited to, a transfer robot. A pilot valve inspection frame 7501 is placed beside the pilot valve transfer mechanism 7100, and a pilot valve inspection table 7502 is connected to the pilot valve inspection frame 7501. A pilot valve positioning frame 7503 is provided on the pilot valve inspection table 7502, which is used to fix the pilot valve positioning seat 7504. For example, the pilot valve positioning seat 7504 includes an L-shaped positioning groove. The pilot valve transfer mechanism 7100 transfers the pilot valve to the pilot valve positioning seat 7504 and releases it, allowing the pilot valve to slide into the L-shaped positioning groove, i.e., the two end faces of the pilot valve fit against the groove surface of the L-shaped positioning groove. A pilot valve camera 7505 is connected to the pilot valve positioning seat 7504 and can correspondingly photograph the mating surface between the pilot valve and the valve body on the pilot valve positioning seat 7504. O-rings are provided on this mating surface to check whether the installation status of each O-ring is qualified. The camera can be equipped with a corresponding control module that can connect to the pilot valve transfer mechanism 7100. This module can control the transfer path of the pilot valve transfer mechanism 7100 based on the O-ring inspection results. For example, if the O-ring inspection fails, the pilot valve transfer mechanism 7100 is controlled to transfer the pilot valve to the unqualified pilot valve shelf 7506. If the O-ring inspection passes, the pilot valve transfer mechanism 7100 is controlled to transfer the pilot valve to the valve body within the pilot valve assembly valve body clamping mechanism 7300 for the next step of screw loading and tightening.

[0167] In one embodiment of this utility model, the valve body clamping mechanism 7300 for pilot valve assembly includes: a third positioning mounting plate 7301; a third longitudinal guide rail 7302, which is longitudinally connected to the third positioning mounting plate 7301; a longitudinal sliding plate 7303, which is slidably connected to the third longitudinal guide rail 7302; a third transverse guide rail, which is transversely connected to the longitudinal sliding plate 7303; a first base plate 7304, which is slidably connected to the third transverse guide rail; a second base plate 7305, which is slidably connected to the third transverse guide rail, and one end of the second base plate 7305 is slidably inserted into one end of the first base plate 7304; and a third first gripper 7306. The third first gripper 7306 is connected to the first substrate 7304; the third second gripper 7307 is connected to the second substrate 7305 and is correspondingly disposed to the third first gripper 7306; the third first transverse drive mechanism is connected to the first substrate 7304 or the third first gripper 7306 and is used to drive the third first gripper 7306 to move closer to or away from the third second gripper 7307; the third second transverse drive mechanism is connected to the second substrate 7305 or the third second gripper 7307 and is used to drive the third second gripper 7307 to move closer to or away from the third first gripper 7306.

[0168] Specifically, such as Figure 42 and Figure 43As shown, a corresponding frame structure is provided at the corresponding position in the transfer system 2 of the electro-hydraulic directional valve assembly line, corresponding to the pilot valve assembly system 7. A third positioning mounting plate 7301 is connected to this frame structure. A third longitudinal guide rail 7302 is connected longitudinally to the third positioning mounting plate 7301. "Longitudinal" refers to the direction perpendicular to the valve body transfer in the vertical plane. A longitudinal sliding plate 7303 is slidably connected to the third longitudinal guide rail 7302. A third transverse guide rail is arranged transversely on the longitudinal sliding plate 7303. "Transverse" refers to the direction parallel to the valve body transfer in the horizontal plane. A first base plate 7304 and a second base plate 7305 are slidably connected on the third transverse guide rail, and the first base plate 7304 can be slidably inserted into the second base plate 7305. A third first gripper 7306 is provided on the first base plate 7304, and a third second gripper 7307 is provided on the second base plate 7305. The third first gripper 7306 is driven to move laterally by the third first lateral movement drive mechanism, and the third second gripper 7307 is driven to move laterally by the third second lateral movement drive mechanism. This allows the third first gripper 7306 and the third second gripper 7307 to clamp the valve body at the corresponding position in the transfer system 2. Adjusting the distance between the third first gripper 7306 and the third second gripper 7307 changes the insertion depth between the first substrate 7304 and the second substrate 7305, thereby improving the sliding guidance of the third first gripper 7306 and the third second gripper 7307.

[0169] Furthermore, in one embodiment of this utility model, such as Figure 42 As shown, the valve body clamping mechanism 7300 for pilot valve assembly further includes: a guide rack 7308, which is connected to the second base plate 7305 along the sliding direction of the second base plate 7305; and a guide gear 7309, which is connected to the first base plate 7304 and meshes with the guide rack 7308. By providing the guide rack 7308, the sliding guidance of the third first jaw 7306 and the third second jaw 7307 can be further improved.

[0170] In one embodiment of this utility model, such as Figures 44 to 46As shown, the screw feeding and tightening mechanism 7400 includes: a tightening mounting base plate 7401; an X-axis guide rail 7402 for tightening the pilot valve, which is connected to the tightening mounting base plate 7401; an X-axis slide 7403 for tightening the pilot valve, which is slidably connected to the X-axis guide rail 7402; an X-axis lead screw 7404 for tightening the pilot valve, which is threadedly connected to the X-axis slide 7403; an X-axis motor 7405 for tightening the pilot valve, which is connected to the X-axis lead screw 7404; and a pilot valve tightening X-axis motor 7405. The pilot valve tightening Y-axis guide rail 7406 is connected to the pilot valve tightening X-axis slide 7403; the pilot valve tightening Y-axis slide 7407 is slidably connected to the pilot valve tightening Y-axis guide rail 7406; the pilot valve tightening Y-axis screw 7408 is connected to the pilot valve tightening Y-axis slide 7407; the pilot valve tightening Y-axis motor 7409 is connected to the pilot valve tightening Y-axis screw 7408; and the screw tightening gun 7410 is connected to the pilot valve tightening Y-axis slide 7407 along the Z-axis.

[0171] Specifically, such as Figures 44 to 46As shown, a frame for fixing and tightening the mounting base plate 7401 is provided on the frame structure used to install the No. 3 positioning mounting plate 7301. The pilot valve tightening X-axis guide rail 7402 is connected to the fixed tightening mounting base plate 7401 along the X-axis. The X-axis is the same as the aforementioned transverse direction. The pilot valve tightening X-axis slide 7403 is slidably connected to the pilot valve tightening X-axis guide rail 7402. The pilot valve tightening X-axis screw 7404 is threadedly connected to the pilot valve tightening X-axis slide 7403, and the pilot valve tightening X-axis motor 7405 drives the pilot valve tightening X-axis slide 7403 to slide along the pilot valve tightening X-axis guide rail 7402 via the pilot valve tightening X-axis screw 7404. The pilot valve tightening Y-axis guide rail 7406 is connected to the pilot valve tightening X-axis slide 7403 along the Y-axis. The Y-axis refers to the direction perpendicular to the X-axis in the horizontal plane. A pilot valve tightening Y-axis slide 7407 is slidably connected to the pilot valve tightening Y-axis guide rail 7406. A pilot valve tightening Y-axis lead screw 7408 is threadedly connected to the pilot valve tightening Y-axis slide 7407. A pilot valve tightening Y-axis motor 7409 drives the pilot valve tightening Y-axis slide 7407 to slide along the pilot valve tightening Y-axis guide rail 7406 via the pilot valve tightening Y-axis lead screw 7408. A screw tightening gun 7410 is connected to the pilot valve tightening Y-axis slide 7407 along the Z-axis. The Z-axis is the same as the longitudinal direction mentioned above. Specifically, the screw tightening gun 7410 is equipped with a corresponding sensing module and control module, which can detect the torque, speed, and tightening depth of the screw tightening bit of the screw tightening gun 7410. This control module is used to control the working state of the screw tightening bit of the screw tightening gun 7410 based on the detection results of the sensing module. For example, when the torque of the tightening bit of the screw tightening gun 7410 reaches a certain limit, but its tightening depth does not reach the preset value, it indicates that there is thread engagement between the screw and the corresponding threaded hole. The control module can control the tightening bit of the screw tightening gun 7410 to drive the screw to unscrew and then repeatedly tighten it.

[0172] The valve core assembly system 3 is equipped with a model scanning mechanism and a control device. The control device can be connected to the screw tightening gun 7410 and can control the working state of the screw tightening gun 7410 based on the model of the valve body. For example, the working state includes at least the number of tightening operations and the path of each tightening operation.

[0173] The screw feeding and tightening mechanism 7400 also includes: a screw feeding tube 7412, the outlet of which is located at the tightening bit of the screw tightening gun 7410; and a screw feeding detection sensor, which is located at the outlet of the screw feeding tube 7412 and is used to detect the feeding status of the screw.

[0174] In another embodiment of this utility model, the screw feeding and tightening mechanism 7400 further includes a belt 7411, which is connected between the output shaft of the pilot valve tightening Y-axis motor 7409 and the pilot valve tightening Y-axis lead screw 7408, with the pilot valve tightening Y-axis lead screw 7408 and the pilot valve tightening Y-axis motor 7409 located on the same side of the belt 7411. This significantly reduces the overall Y-axis space occupied by the pilot valve tightening Y-axis lead screw 7408 and the output shaft of the Y-axis motor.

[0175] In one embodiment of this utility model, such as Figure 1 and Figure 2 As shown, the electro-hydraulic directional valve assembly line also includes: a finished product tray 9, which is located on the side of the downstream section of the pilot valve assembly system 7 in the transfer system 2, and is used to place finished products; and a finished product unloading system 8, which is used to transfer finished products between the transfer system 2 and the finished product tray 9.

[0176] The transfer system 2 can be extended downstream of the pilot valve assembly system 7.

[0177] Furthermore, in one embodiment of this utility model, such as Figure 1 As shown, the transfer system 2 includes: an upper conveyor line 2100, which is located between the valve body feeding system 1, the valve core assembly system 3, the valve core tightening system 4, the second process plug assembly system 5, and the pilot valve assembly system 7, and extends downstream of the pilot valve assembly system 7; the upper conveyor line 2100 conveys in the forward direction; and a lower conveyor line 2200, which is located below the upper conveyor line 2100 and conveys in the reverse direction. Multiple pallets, each pallet being movable on the upper conveyor line 2100 or the lower conveyor line 2200, and the pallets being used to place valve bodies and for various assembly processes; a first-end lifting mechanism 2300, which is located between the first end of the upper conveyor line 2100 and the first end of the lower conveyor line 2200; and an end-end lifting mechanism 2400, which is located between the end of the upper conveyor line 2100 and the end of the lower conveyor line 2200.

[0178] For example, the upper conveyor line 2100 extends horizontally sequentially between the valve body feeding system 1, the valve core assembly system 3, the valve core tightening system 4, the second process plug assembly system 5, and the pilot valve assembly system 7, and can extend downstream of the pilot valve assembly system 7. The conveying direction of the upper conveyor line 2100 is from left to right. Multiple trays are placed at intervals on the upper conveyor line 2100, and the trays move with the upper conveyor line 2100. Semi-finished valve bodies or finished electro-hydraulic directional valves at various stages can be placed on them. Tray stop and lifting mechanisms are provided at corresponding positions downstream of the valve core assembly system 3, the valve core tightening system 4, the second process plug assembly system 5, the pilot valve assembly system 7, and the pilot valve assembly system 7. These mechanisms can stop and lift the trays at the corresponding positions to perform corresponding process operations on the valve bodies on the corresponding trays within each system. A lower conveyor line 2200 is installed below the upper conveyor line. The conveying direction of the lower conveyor line 2200 is from right to left, and the lower conveyor line 2200 is used to return empty pallets. For example, the left end of the upper conveyor line 2100 is aligned with the left end of the lower conveyor line 2200, and the right end of the upper conveyor line 2100 is aligned with the right end of the lower conveyor line 2200. A head lifting mechanism 2300 is installed between the left ends of the upper conveyor line 2100 and the lower conveyor line 2200, and an end lifting mechanism 2400 is installed between the right ends of the upper conveyor line 2100 and the lower conveyor line 2200. After the finished product unloading system 8 transfers the electro-hydraulic directional valve finished product on the upper conveyor line 2100 to the finished product tray 9, the corresponding empty tray can be transported to the lower conveyor line 2200 through the end lifting mechanism 2400, and then transferred to the first lifting mechanism 2300 by the lower conveyor line 2200, so that the first lifting mechanism 2300 can transfer the empty tray back to the upper conveyor line 2100.

[0179] In one embodiment of this utility model, the electro-hydraulic directional valve assembly line further includes: a scanning system, which is located upstream of the valve core assembly system 3 and is used to scan the model QR code on the valve body; and a main control system, which is connected to the scanning system, the valve core assembly system 3, the valve core tightening system 4, the second process plug assembly system 5, and the pilot valve assembly system 7, to adjust the number of operations and operation paths of the valve core assembly system 3, the valve core tightening system 4, the second process plug assembly system 5, and the pilot valve assembly system 7 based on the model of the valve body.

[0180] It should be noted that the scanning system is located upstream of the valve core assembly system 3. This means that before the valve body is transferred from the valve body loading system 1 to the transfer system 2 and then to the valve core assembly system 3, the scanning system scans the QR code on the valve body to determine the model of the electro-hydraulic directional valve. Based on the scanning results, the main control system can control the number of operations and the operation path of the valve core assembly system 3, the valve core tightening system 4, the second process plug assembly system 5, and the pilot valve assembly system 7, respectively.

[0181] In addition to setting up a scanning system and corresponding main control system at the upstream position of the valve core assembly system 3, scanning mechanisms can also be added to the valve core assembly system 3, valve core tightening system 4, No. 2 process plug assembly system 5 and pilot valve assembly system 7 to reconfirm the valve body model before each assembly process, and control the number of operations and operation paths of each part through the corresponding control device.

[0182] This utility model also provides an electro-hydraulic directional valve assembly method, including the following steps: the valve body is fed to the transfer system 2, the transfer system 2 transfers the valve body to the valve core assembly system 3; the valve core assembly system 3 feeds the valve core and checks the O-ring installation status of the valve core, and after passing the inspection, the valve core is assembled to the valve body, the transfer system 2 continues to transfer the valve body to the valve core tightening system 4; the valve core tightening system 4 tightens the valve core to the valve body, the transfer system 2 continues to transfer the valve body to the second process plug assembly system 5; the second process plug assembly system 5 feeds and tightens the second process plug, the transfer system 2 continues to transfer the valve body to the valve body flipping system 6; the valve body flipping system 6 flips the valve body, the transfer system 2 continues to transfer the valve body to the pilot valve assembly system 7; the pilot valve assembly system 7 feeds and checks the O-ring installation status of the pilot valve, and after passing the inspection, the pilot valve is tightened and assembled to the valve body, the transfer system 2 continues to transfer the valve body downstream of the pilot valve assembly system 7; the finished product unloading system 8 transfers the finished product on the transfer system 2 to the finished product bracket 9.

[0183] The steps of feeding the valve body to the transfer system 2 specifically include: the valve body transfer mechanism 1300 transfers the valve body on the valve body bracket 1200 to the No. 1 process plug assembly station, and the No. 1 process plug is manually assembled on each end face of the valve body; the valve body transfer mechanism 1300 transfers the valve body with the No. 1 process plug assembled from the No. 1 process plug assembly station to the upstream position of the valve core assembly system 3 on the transfer system 2.

[0184] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A second-stage process plug assembly system, characterized in that, include: Process plug tightening mechanism (5100), which is capable of tightening the second process plug on the valve body; A process plug feeding mechanism (5200) is arranged next to the process plug tightening mechanism (5100) and is used to feed the second process plug to the process plug tightening mechanism (5100). A tightening mechanism drive device (5300) is connected to the process plug tightening mechanism (5100) and is used to drive the process plug tightening mechanism (5100) to move in space so that the process plug tightening mechanism (5100) moves to a preset valve body assembly position so that the process plug tightening mechanism (5100) can perform a second process plug tightening operation at the corresponding position.

2. The No. 2 process plug assembly system according to claim 1, characterized in that, The process plugging mechanism (5200) includes: The feeding pipe is used to transport the No. 2 process plug; Receiving platform (5201); The material pushing mechanism moves with the material receiving platform (5201). The material pushing mechanism is used to drive the material receiving platform (5201) to move between the outlet of the feeding pipe and the process plug tightening mechanism (5100).

3. The No. 2 process plug assembly system according to claim 2, characterized in that, The process plugging mechanism (5200) also includes: A process blockage detection device is installed at the outlet of the feeding pipe and is used to detect the feeding status of the second process blockage.

4. The No. 2 process plug assembly system according to claim 2, characterized in that, The No. 2 process plug assembly system also includes: Process block assembly frame (5400); A process plug assembly mounting plate (5500) is connected to the process plug assembly frame (5400). The tightening mechanism drive device (5300) includes: X-axis guide rail (5301) for process plug assembly, the X-axis guide rail (5301) for process plug assembly is connected to the mounting plate (5500) for process plug assembly; An X-axis slide table (5302) for assembling process plugs is slidably connected to an X-axis guide rail (5301) for assembling process plugs. An X-axis drive mechanism for process plug assembly, wherein the X-axis drive mechanism for process plug assembly is connected to the X-axis slide table (5302) for process plug assembly; A process plug assembly connecting plate (5303) is connected to the process plug assembly X-axis slide (5302); A Z-axis guide rail (5304) for process plug assembly is connected to a connecting plate (5303) for process plug assembly. A Z-axis slider (5305) for assembling process plugs is slidably connected to a Z-axis guide rail (5304) for assembling process plugs. A Z-axis drive mechanism for process plug assembly, wherein the Z-axis drive mechanism for process plug assembly is connected to the Z-axis slider (5305) for process plug assembly; A first X-direction limiting block (5306) for process plug assembly is disposed on one side of the X-direction slide table (5302) for process plug assembly; A second X-direction limiting block (5307) for process plug assembly is provided on the other side of the X-direction slide table (5302) for process plug assembly.

5. The No. 2 process plug assembly system according to claim 4, characterized in that, The process plug tightening mechanism (5100) includes: A tightening gun (5101) for assembling process plugs is slidably connected to a Z-axis slider (5305) for assembling process plugs. A tightening bit (5102) for assembling process plugs is connected to a tightening gun (5101) for assembling process plugs. A process plug assembly sensing module is connected to the process plug assembly tightening bit (5102) and is used to detect the torque, speed and tightening depth of the process plug assembly tightening bit (5102). A process blockage assembly control device is connected to the process blockage assembly sensing module and the process blockage assembly tightening bit (5102), and is used to control the working state of the process blockage assembly tightening bit (5102) based on the detection result of the process blockage assembly sensing module.

6. The No. 2 process plug assembly system according to claim 5, characterized in that, The process plug tightening mechanism (5100) further includes: A negative pressure adsorption module is connected to the tightening bit (5102) for assembling the process plug, so that the tightening bit (5102) for assembling the process plug can adsorb the second process plug on the receiving platform (5201).

7. The No. 2 process plug assembly system according to claim 5, characterized in that, The No. 2 process plug assembly system also includes: Oiling assembly (5600) is disposed on the side of the process plug tightening mechanism (5100) and is used to lubricate the second process plug on the process plug tightening mechanism (5100).

8. The No. 2 process plug assembly system according to claim 7, characterized in that, The oil-dipping assembly (5600) includes: Oil box (5601), the oil box (5601) is used to hold oil; An oil box drive mechanism is connected to the oil box (5601) and is used to drive the oil box (5601) to move closer to or further away from the tightening bit (5102) for the process plug assembly.

9. The No. 2 process plug assembly system according to any one of claims 1 to 8, characterized in that, The No. 2 process plug assembly system also includes: A valve body clamping mechanism (5700) for assembling a process plug is provided below the process plug tightening mechanism (5100) and is used to clamp the valve body.

10. An electro-hydraulic directional valve assembly line, characterized in that, include: The No. 2 process plug assembly system as described in any one of claims 1 to 9.

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