Hydraulic multi-way valve combined assembly synchronous tightening device and assembly control method thereof

Abstract

The application discloses a hydraulic multi-way valve combined assembly synchronous tightening device and an assembly control method thereof, relates to the technical field of hydraulic part assembly, and comprises a tightening mechanism, a sliding mechanism, an assembly platform and a control system. The method is characterized in that an inclined mechanism is arranged to switch the inclination of the assembly platform, and the tightening shaft is used to tighten the nut on the screw rod of the valve group. When the tightening is unqualified, an audible and visual alarm unit is used for alarm. The method comprises the steps of S1, pre-adjustment of the equipment; S2, valve piece assembly; S3, combined assembly and tightening; and S4, jacking and transfer. The method realizes the automation of valve body combined assembly and tightening, controls the tightening shafts of each group synchronously or individually through the tightening controller, collects and analyzes data, detects the qualified valve body assembly, and automatically adjusts, so that the method can meet the use of the assembly of various types of piece type multi-way valves. The anti-following rotation mechanism is integrated to prevent the nut from following rotation. The inclined mechanism is arranged to realize the inclination and horizontal switching of the assembly platform, so that the valve piece is convenient to install.

Description

Technical Field

[0001] This invention relates to the field of hydraulic component assembly technology, specifically to a hydraulic multi-way valve combined assembly synchronous tightening device and its assembly control method. Background Technology

[0002] Hydraulic multi-way valves for construction machinery are a typical example of high-end hydraulic components. With their superior control performance, compact and flexible structure, and strong adaptability to equipment, they are widely used in construction machinery, mining machinery, port machinery, and other fields. A hydraulic multi-way valve consists of several directional valve plates connected by bolts; the quality of this connection directly affects the reliability of the seals between the valve plates.

[0003] In existing hydraulic multi-way valves for engineering machinery, imperfections in assembly technology lead to inter-valve oil leakage during use. The machining quality of the valve sealing face and the assembly process are key factors affecting zero-leakage control. In practical applications, inter-valve leakage and even oil spraying are mostly caused by the failure of threaded connections to tighten properly. Although the threaded connection itself has limited value, the components it connects are very important. When the connection fails, it can cause loosening and leakage between valve body plates, or even bolt breakage and safety accidents.

[0004] The problems mentioned above are generally caused by errors in manual operation and tools, which can lead to poor uniformity of torque loading and inconsistent torque magnitude; uneven stress on each bolt can cause studs to loosen or even leak oil between bolts, affecting product quality; using the magnitude of the tightening torque as a single parameter as a tightening criterion has low reliability; and there are currently no means of testing and evaluating tightening quality. Summary of the Invention

[0005] The purpose of this invention is to provide a hydraulic multi-way valve merging and synchronous tightening device and its assembly control method, in order to solve the problems mentioned in the background art, such as errors caused by manual operation and tools, which easily lead to poor uniformity of torque loading and torque magnitude consistency; uneven force on each bolt, which easily causes studs to loosen, or even oil leakage between bolts, affecting product quality; and the lack of detection and evaluation means, making it difficult to trace back later.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a hydraulic multi-way valve merging and synchronous tightening device, comprising:

[0007] A tightening mechanism for tightening nuts in multi-way valve assembly;

[0008] A sliding mechanism is mounted on the frame, and a tightening mechanism is disposed on the sliding mechanism for pushing the tightening mechanism to perform operations;

[0009] An assembling platform, which is hinged to the frame at one end corresponding to the position of the tightening mechanism and away from the tightening mechanism, is used for assembling the multi-way valve assembly;

[0010] A control system is used for controlling the linkage of the tightening mechanism, sliding mechanism and assembling platform;

[0011] The sliding mechanism comprises a base and a track fixed to the frame for sliding of the base, and a pushing mechanism is hinged to the frame to push the base to reciprocate on the track; one side of the base close to the assembling platform defines the mounting position of the tightening mechanism;

[0012] The tightening mechanism comprises a tightening shaft, and the tightening shaft penetrates the mounting position at the end of the sleeve;

[0013] The assembling platform is provided with a clamping mechanism for clamping the valve group, an inclination mechanism for inclining the assembling platform and a jacking mechanism for lifting the clamping mechanism;

[0014] The clamping mechanism is provided with an anti-following mechanism at the other end away from the tightening mechanism to prevent the nut at the other end of the valve group from following;

[0015] The control system comprises a tightening controller for controlling the tightening shaft and collecting the tightening data, an industrial computer for linkage of the assembling platform and / or the sliding mechanism, a control panel electrically connected with the industrial computer and an audible and light alarm unit electrically connected with the tightening controller and used for debugging and alarming.

[0016] Preferably, the assembling platform is connected with an inclination mechanism, and the other end of the inclination mechanism is connected with the frame to turn the assembling platform around the hinge shaft through the inclination mechanism.

[0017] Preferably, the clamping mechanism comprises a clamping table movably installed on the assembling platform, and a stand is extended upward at the head and / or tail of the clamping table, and a clamp for clamping the multi-way valve is arranged close to the top end of the stand, and a limiting boss is defined on one side of the clamping table close to the anti-following mechanism for axial limiting of the valve group.

[0018] Preferably, the jacking mechanism comprises a lifting mechanism installed in the frame, and a jacking platform is connected with the lifting mechanism, and the jacking platform penetrates the assembling platform to lift the clamping table to the height of the external flow roller.

[0019] Preferably, the mounting position is provided with a slot in the shape of a long strip.

[0020] Preferably, an adjusting mechanism is installed on the mounting position, and the other end of the adjusting mechanism is connected with the tightening shaft, and the tightening shaft is displaced on the slot through the adjusting mechanism.

[0021] Preferably, the slot is provided with three groups, each group of the slot is provided with a tightening shaft, and each group of the tightening shaft is separately provided with an adjusting mechanism.

[0022] Preferably, the anti-following rotation mechanism comprises an anti-rotation sleeve sleeved with the nut at the other end of the multi-way valve screw rod and a frame connected with the anti-rotation sleeve universal joint.

[0023] A hydraulic multi-way valve combined assembly synchronous tightening device assembly control method, the method is tilted by setting the tilting mechanism to switch the horizontal level of the assembly platform, and the nut on the valve group screw rod is tightened by cooperating with the tightening shaft, and the tightening data is collected, and when the tightening is unqualified, the sound and light alarm unit is alarmed, comprising S1 equipment pre-adjustment step, S2 valve piece assembly step, S3 combined assembly tightening step and S4 jacking and transporting step; Specifically as follows:

[0024] The S1 equipment pre-adjustment step comprises: S11 parameter adjustment step and S12 tightening mechanism and anti-following rotation mechanism adjustment step; Specifically as follows:

[0025] The S11 parameter adjustment step: the operator judges the workpiece type, configures the tightening torque or angle by operating the tightening controller, and sets the alarm threshold value by operating the sound and light alarm unit;

[0026] The S12 tightening mechanism and anti-following rotation mechanism adjustment step: the workpiece type is judged, the control panel is switched by operating, the control panel sends instructions, the industrial computer receives instructions, the adjusting mechanism is controlled to drive the tightening shaft to displace to the specified position, and the anti-following rotation mechanism is replaced to the appropriate size and installed on the clamping table;

[0027] The S2 valve piece assembly step: the control panel is operated to send instructions, the industrial computer receives instructions, the tilting mechanism is controlled to drive the assembly platform to tilt, the assembly platform is tilted to the specified angle, the operator preinstalls the screw rod with the nut on the anti-rotation sleeve of the anti-following rotation mechanism, the workpiece is inserted into the screw rod according to the quantity requirement, and the workpiece is clamped and fitted by the clamp of the stand after installation is completed, the screw rod end is combined with the nut when the workpiece position meets the requirement, the control panel is operated to send reset instructions, the industrial computer receives instructions, the tilting mechanism is controlled to drive the assembly platform to reset the horizontal level, and the screw nut at both ends of the valve group is pre-reserved 2-3 threads;

[0028] The S3 combined assembly tightening step: the control panel is operated to send instructions, the industrial computer controls the pushing mechanism to drive the base to slide on the track until the tightening sleeve end on the tightening shaft is connected with the valve group nut, the tightening shaft is controlled by the tightening controller, the tightening data is collected and analyzed by the tightening controller, and the tightening data is double-backed stored by the tightening controller and the industrial computer;

[0029] The tightening controller sends a signal to the sound and light alarm unit to alarm when the detection is unqualified, and the tightening shaft is loosened and the tightening operation is repeated until the detection is qualified;

[0030] The tightening controller sends a signal to the sound and light alarm unit to alarm when the detection is unqualified, and the tightening shaft is loosened and the tightening operation is repeated until the detection is qualified;

[0031] The S4 lifting and transferring step: the control panel sends a lifting instruction, the industrial computer receives the instruction and controls the lifting mechanism to drive the lifting platform to lift the clamping table to the height of the flow roller, the operator releases the clamping of the clamp on the stand, and disassembles the anti-following mechanism, and the assembled valve body is manually or externally lifted by a lifting device to the flow roller and flows to the next station.

[0032] Preferably, the turning angle of the assembly platform in step S2 is 0-40°.

[0033] Compared with the prior art, the present application has the following advantages:

[0034] The present application controls the tightening mechanism, the sliding mechanism and the assembly platform through the control system, realizes the automation of the valve body combined assembly and tightening, controls each group of tightening shafts synchronously or individually through the tightening controller, collects and analyzes data, detects the qualified valve body assembly, and automatically adjusts, greatly improves the assembly quality and reliability, and is equipped with an adjusting mechanism to adjust the position of the tightening shaft, can meet the use of various types of multi-way valve assembly, and integrates the anti-following mechanism to prevent the following of the nut at the other end during tightening, has a stable structure and reduces unnecessary unqualified rate, and the inclination mechanism is arranged to realize the inclination and horizontal switching of the assembly platform, which is convenient for the operator to install the valve plate. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 It is a hydraulic multi-way valve combined assembly synchronous tightening device main body structure schematic view of the present application;

[0036] Figure 2 It is a hydraulic multi-way valve combined assembly synchronous tightening device top view structure schematic view of the present application;

[0037] Figure 3 It is a hydraulic multi-way valve combined assembly synchronous tightening device assembly platform horizontal state schematic view of the present application;

[0038] Figure 4 It is a hydraulic multi-way valve combined assembly synchronous tightening device assembly platform inclination state schematic view of the present application;

[0039] Figure 5 It is a hydraulic multi-way valve combined assembly synchronous tightening device Figure 1 The schematic view of A in the present application;

[0040] Figure 6 Hydraulic multi-way valve assembly synchronous tightening device Figure 3 The schematic view is shown at B.

[0041] In the figure: 1, rack; 2, base; 3, track; 4, pushing mechanism; 5, installation position; 6, slot; 7, tightening shaft; 8, assembly platform; 9, tilting mechanism; 10, clamping table; 11, stand; 12, clamp; 13, anti-rotation sleeve; 14, frame; 15, lifting mechanism; 16, jacking platform; 17, adjusting mechanism; 18, limiting boss; 19, industrial computer; 20, control panel; 21, audible and visual alarm unit; 22, tightening controller. Embodiment

[0042] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0043] Embodiment

[0044] Please refer to and combine Figures 1-6 A hydraulic multi-way valve assembly synchronous tightening device is composed of a tightening mechanism for nut tightening of multi-way valve assembly arranged on a sliding mechanism, a sliding mechanism installed on a rack 1 for pushing the tightening mechanism to work, an assembly platform 8 installed at a position corresponding to the tightening mechanism for assembling multi-way valve components, and a control system for controlling the linkage of the tightening mechanism, the sliding mechanism and the assembly platform 8.

[0045] The sliding mechanism is provided with a base 2 and a track 3 fixed to the rack 1 for sliding of the base 2, and the rack 1 is hinged with a pushing mechanism 4 for reciprocating movement of the base 2 on the track 3 by pushing the base 2 through the pushing mechanism 4; the base 2 is defined with an installation position 5 of the tightening mechanism on one side close to the assembly platform 8; three groups of slot 6 shaped like long strips are arranged on the installation position 5, and the tightening sleeve ends of three groups of tightening shafts 7 are respectively penetrated through each group of slot 6, as shown in Figure 1 and Figure 5 The slots 6 are set according to the valve body workpiece shapes of XSV12 and XSV16; to adapt to the assembly of two different types of valve bodies. The installation position 5 is also provided with an adjusting mechanism 17, the other end of which is connected with the tightening shaft 7, and the tightening shaft 7 is displaced on the slot 6 through the adjusting mechanism 17 to realize automatic control of adjustment.

[0046] The end of the assembly platform 8 away from the tightening mechanism is hinged to the rack 1, and the assembly platform 8 is connected with the tilting mechanism 9, the other end of the tilting mechanism 9 is connected with the rack 1, the assembly platform 8 is turned around the hinge shaft by the tilting mechanism 9, the tilting of the assembly platform 8 facilitates the installation of the valve pieces of the valve group, the operator only needs to install the valve pieces according to the required number of workpieces, for example, eight or ten pieces.

[0047] The assembly platform 8 is provided with a clamping mechanism for clamping the valve group, the clamping mechanism is composed of a clamping table 10 movably installed on the assembly platform 8, upright columns 11 extending upward at the head and tail of the clamping table 10, and clamps 12 provided on the upright columns 11 close to the top end for clamping the multi-way valve, the valve pieces installed according to the number are clamped and positioned by the clamps 12; a limiting boss 18 is defined on one side of the clamping table 10 close to the anti-following mechanism, for axial limiting of the valve group.

[0048] A lifting mechanism is further provided below the clamping mechanism for cooperating with the transfer, the lifting mechanism is composed of a lifting mechanism 15 installed in the rack 1 and a lifting platform 16 connected with the lifting mechanism 15, the clamping table 10 is lifted to the height of the external flow roller by the lifting platform 16 penetrating the assembly platform 8, and is lifted and transferred to the flow roller by manual or external lifting mechanism.

[0049] The other end of the clamping mechanism away from the tightening mechanism is provided with an anti-following mechanism for preventing the nut at the other end of the valve group from following; the anti-following mechanism is composed of an anti-rotation sleeve 13 sleeved on the nut at the other end of the multi-way valve screw rod and a frame 14 connected with the anti-rotation sleeve 13 through a universal joint, the rotation of the anti-rotation sleeve 13 is locked to prevent the nut at the end from following.

[0050] Among them, the anti-rotation sleeve 13 in the embodiment and the tightening sleeve of the tightening shaft 7 are both tools with bolt specifications of M10 or M12, but are not limited to the above-mentioned models, and the person skilled in the art can select and set according to the requirements of the valve body.

[0051] The control system is composed of a tightening controller 22 for controlling the tightening shaft 7 and collecting tightening data, an industrial computer 19 linked with the assembly platform 8 and / or the sliding mechanism, a control panel 20 electrically connected with the industrial computer 19, and an audible and light alarm unit 21 electrically connected with the tightening controller 22 and used for debugging and alarming.

[0052] The tightening controller 22 is connected with the master controller and the slave controller through internal Ethernet. The master controller and the slave controller control each group of tightening shafts 7 respectively, so that synchronous tightening is realized, automatic detection of tightening quality is realized, the tightening process is automatically stopped if the tightening is incorrect, high-precision control of torque and rotation angle is realized, data acquisition and storage are realized, the number and arrangement of the master controller and the slave controller can be appropriately set by the person skilled in the art according to the actual working condition and the number of the tightening shafts 7, and the master controller can also be connected with the network through a switch to realize remote query, analysis, export and storage of data parameters.

[0053] The sound-light alarm unit 21 is connected with the master controller externally. When a certain tightening shaft 7 is not tightened correctly, the sound-light alarm unit 21 is used to alarm, and SPC software is used to continuously measure and analyze and process the data of the product. The software can select various types of control charts, and the max, min, R, Xq, Cp, Cpk and other key quality indexes can be displayed on the sound-light alarm unit 21 at the same time. The product traceability can also be realized.

[0054] The pushing mechanism 4, the tilting mechanism 9, the lifting mechanism 15 and the adjusting mechanism 17 in the embodiment all adopt telescopic cylinders, but are not limited to telescopic cylinders, and the person skilled in the art can appropriately select, for example, electric telescopic rods.

[0055] Based on the assembly control method of the hydraulic multi-way valve combined assembly synchronous tightening device, the assembly platform 8 is tilted and switched horizontally by setting the tilting mechanism 9, the nut on the screw rod of the valve group is tightened by the tightening shaft 7, the tightening data is collected, the sound-light alarm unit 21 is used to alarm when the tightening is incorrect, the method includes the S1 equipment pre-adjustment step, the S2 valve plate assembly step, the S3 combined assembly tightening step and the S4 jacking and transporting step, and specifically as follows.

[0056] The S1 equipment pre-adjustment step includes the S11 parameter adjustment step and the S12 tightening mechanism and anti-following rotation mechanism adjustment step, and specifically as follows.

[0057] The S11 parameter adjustment step: the operator judges the workpiece type, configures the tightening torque or rotation angle by operating the tightening controller 22, and sets the alarm threshold value by operating the sound-light alarm unit 21.

[0058] The S12 tightening mechanism and anti-following rotation mechanism adjustment step: the workpiece type is judged, the control panel 20 is switched by operation, the control panel 20 sends instructions, the industrial computer 19 receives the instructions to control the adjusting mechanism 17 to drive the tightening shaft 7 to move to the specified position, and the anti-following rotation mechanism is replaced to the appropriate size and installed on the clamping table 10.

[0059] S2 valve piece assembly step: please refer to Figure 3 , Figure 4 , by operating the control panel 20 sends instructions to the industrial computer 19 receives instructions to control the start of the tilt mechanism 9 driven assembly platform 8 tilt 0-40 °, wherein the preferred tilt angle in this embodiment is 30 °, tilt to the specified angle, the operator will have a screw rod nut pre-installed on the anti-rotation sleeve 13 on the anti-rotation mechanism, the workpiece is according to the number of screw rod into, and after installation by the column 11 clamp 12 workpiece clamping fit, workpiece position meets the requirements of the screw end and into the nut, control panel 20 sends reset instructions to the industrial computer 19 receives instructions to control the start of the tilt mechanism 9 driven assembly platform 8 reset level, both ends of the valve group nut site reserved 2-3 buckle threads.

[0060] S3 combined assembly tightening step: control panel 20 sends instructions, through the industrial computer 19 control push mechanism 4 driven base 2 on the track 3 sliding, until the tightening sleeve end on the tightening shaft 7 and the valve nut connected, through the tightening controller 22 control tightening shaft 7 tightening, and the tightening data through the tightening controller 22 for collection and analysis, tightening controller 22 and industrial computer 19 double backup storage tightening data.

[0061] When the tightening controller 22 detects torque or angle control precision is not in the ± 3% value, send a signal to the audible and visual alarm unit 21 alarm, while starting the tightening shaft 7 loose and repeat the tightening action until the detection is qualified; and determine the quality of one or more of the qualified torque method, angle method, torque plus angle method, sitting point-angle method.

[0062] Tightening controller 22 detection qualified through the industrial computer 19 sends instructions to control the push mechanism 4 reset.

[0063] S4 lifting and transporting step: control panel 20 sends lifting instructions, the industrial computer 19 receives instructions to control the lifting mechanism 15 driven lifting platform 16 clamping table 10 lifting to the height of the flow roller, the operator to release the clamp 12 on the column 11 clamping, and disassembly of the anti-rotation mechanism, through artificial or external lifting device will be assembled complete valve to the flow roller flow to the next station.

[0064] Although the above has shown and described the embodiments of the present application, it can be understood that the above-mentioned embodiments are exemplary, and can not be understood as limiting the present application, those skilled in the art can make changes, modifications, replacements and variations to the above-mentioned embodiments within the scope of the present application.

Claims

1. A hydraulic multi-way valve combination assembly synchronous tightening device, characterized in that, The utility model relates to a multi-way valve assembly device, which comprises: a screwing mechanism for screwing nuts of a multi-way valve assembly; a sliding mechanism mounted on a rack (1), wherein the screwing mechanism is arranged on the sliding mechanism and is used for pushing the screwing mechanism to work; an assembly platform (8) which is installed at a position corresponding to the screwing mechanism and is hinged to the rack (1) at an end away from the screwing mechanism, and is used for assembling a multi-way valve assembly; a control system which is used for controlling linkage of the screwing mechanism, the sliding mechanism and the assembly platform (8); wherein the sliding mechanism comprises a base (2) and a track (3) fixed to the rack (1) and used for sliding of the base (2), a pushing mechanism (4) is hinged to the rack (1), the base (2) is reciprocated on the track (3) by the pushing mechanism (4), and a mounting position (5) of the screwing mechanism is defined on a side of the base (2) close to the assembly platform (8); the screwing mechanism comprises a screwing shaft (7), and the screwing shaft (7) penetrates the mounting position (5) at a sleeve end; the assembly platform (8) is provided with a clamping mechanism used for clamping a valve group, an inclination mechanism (9) used for inclining the assembly platform (8) and a jacking mechanism used for lifting the clamping mechanism; the clamping mechanism is provided with an anti-following mechanism at an end away from the screwing mechanism, and the anti-following mechanism is used for preventing another end nut of the valve group from following rotation; the control system comprises a screwing controller (22) used for controlling the screwing shaft (7) and collecting screwing data, an industrial computer (19) used for linkage of the assembly platform (8) and the sliding mechanism, a control panel (20) electrically connected with the industrial computer (19) and an audible and light alarm unit (21) electrically connected with the screwing controller (22) and used for debugging and alarming; the anti-following mechanism comprises an anti-rotation sleeve (13) sleeved with another end nut of a multi-way valve screw rod and a frame (14) connected with the anti-rotation sleeve (13) through a universal joint; an inclination angle of the assembly platform (8) is 0-40°.

2. The hydraulic multi-way valve gang assembly synchronous tightening device according to claim 1, characterized in that: the assembly platform (8) is connected with the inclination mechanism (9), the inclination mechanism (9) is connected with the rack (1) at another end, and the assembly platform (8) is turned around a hinge shaft through the inclination mechanism (9).

3. The hydraulic multi-way valve gang assembly synchronous tightening device according to claim 2, characterized in that: the clamping mechanism comprises a clamping table (10) movably mounted on the assembly platform (8), a stand (11) extending upward at a head or a tail of the clamping table (10), a clamp (12) arranged on the stand (11) close to a top end and used for clamping a multi-way valve, and a limiting boss (18) defined on a side of the clamping table (10) close to the anti-following mechanism and used for axial limiting of the valve group.

4. The hydraulic multi-way valve gang assembly synchronous tightening device according to claim 1, characterized in that: the jacking mechanism comprises a lifting mechanism (15) mounted in the rack (1), a jacking platform (16) connected with the lifting mechanism (15), and the jacking platform (16) penetrates the assembly platform (8) and jacks up the clamping table (10) to the height of an external flow roller.

5. The hydraulic multi-way valve gang assembly synchronous tightening device according to claim 1, characterized in that: the mounting position (5) is provided with a slot (6) in a long strip shape.

6. The hydraulic multi-way valve gang assembly synchronous tightening device according to claim 5, characterized in that: The adjusting mechanism (17) is further installed on the mounting position (5), and the other end of the adjusting mechanism (17) is connected with the tightening shaft (7), and the tightening shaft (7) is displaced on the slot (6) through the adjusting mechanism (17).

7. The hydraulic multi-way valve gang assembly synchronous tightening device according to claim 6, characterized in that: The slot (6) is provided with three groups, and each group of the slot (6) is provided with a tightening shaft (7), and each group of the tightening shaft (7) is separately provided with an adjusting mechanism (17).

8. The assembly control method of the hydraulic multi-way valve gang assembly synchronous tightening device according to any one of claims 1-7, characterized in that, The method is characterized in that the tilting mechanism (9) is arranged to tilt the assembly platform (8) horizontally, and the tightening shaft (7) is used to tighten the nut on the valve group screw rod, and the tightening data is collected, and the unqualified tightening is alarmed by the sound and light alarm unit (21), and the method comprises the following steps: The S1 device pre-adjusting step comprises an S11 parameter adjusting step and an S12 tightening mechanism and anti-following rotation mechanism adjusting step, and the specific steps are as follows: The S11 parameter adjusting step is that an operator judges the workpiece type, configures the tightening torque or angle by operating the tightening controller (22), and sets the alarm threshold value of the sound and light alarm unit (21); The S12 tightening mechanism and anti-following rotation mechanism adjusting step is that the workpiece type is judged, the control panel (20) is operated to switch, the control panel (20) sends a command, the industrial computer (19) receives the command, the adjusting mechanism (17) is controlled to drive the tightening shaft (7) to displace to a specified position, and the anti-following rotation mechanism is replaced to a suitable size and installed on the clamping table (10); The S2 valve piece assembly step is that the control panel (20) sends a command, the industrial computer (19) receives the command, the tilting mechanism (9) is controlled to drive the assembly platform (8) to tilt, the operator preinstalls the screw rod with the nut on the anti-rotation sleeve (13) of the anti-following rotation mechanism after the assembly platform (8) is tilted to a specified angle, the workpiece is inserted into the screw rod according to the quantity requirement, the workpiece is clamped and attached by the clamp (12) of the stand (11) after installation is completed, the screw rod end is inserted into the nut when the workpiece position meets the requirement, the control panel (20) sends a reset command, the industrial computer (19) receives the command, the tilting mechanism (9) is controlled to drive the assembly platform (8) to reset to the horizontal, and the nut position at both ends of the valve group is pre-installed with 2-3 threads; The S3 joint assembly and tightening step is that the control panel (20) sends a command, the industrial computer (19) controls the pushing mechanism (4) to drive the base (2) to slide on the track (3) until the tightening sleeve end on the tightening shaft (7) is connected with the valve group nut, the tightening shaft (7) is controlled by the tightening controller (22) to tighten, the tightening data is collected and analyzed by the tightening controller (22), and the tightening controller (22) and the industrial computer (19) are double backup storage of the tightening data; When the tightening controller (22) detects that the workpiece is unqualified, a signal is sent to the sound and light alarm unit (21) to alarm, and the tightening shaft (7) is loosened and the tightening action is repeated until the workpiece is qualified. The tightening controller (22) detects the eligibility and sends a command to the push mechanism (4) to reset through the industrial computer (19); The S4 lifting and transferring step: the control panel (20) sends a lifting command, the industrial computer (19) receives the command and controls the lifting mechanism (15) to drive the lifting platform (16) to lift the clamping table (10) to the height of the flow roller, the operator releases the clamp (12) on the stand (11), disassembles the anti-following mechanism, and manually or by an external lifting device moves the assembled valve body to the flow roller to flow to the next station.

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