Valve assembling device and system

Abstract

The valve assembling device comprises a working table (10), an extruding mechanism (20) arranged above the working table and a screwing mechanism (30) arranged below the working table. The workbench comprises a base (11), and the base (11) is used for placing the valve body located at the assembling position. The pressing mechanism can press the valve seat ring combined with the pressing mechanism (20) into the valve body at the assembly position from top to bottom along a pressing direction (E). The screwing mechanism can drive the sealing box combined with the screwing mechanism to be screwed into the valve body located at the assembly position from bottom to top in the direction opposite to the press-in direction, and when the sealing box is screwed into the valve body, the sealing box rotates around a first axis (X1) parallel to the press-in direction. According to the assembling device, the valve seat ring and the sealing box can be assembled to the valve body on one station, the process steps are reduced, the production efficiency is improved, and the cost is saved. The utility model further provides a valve assembling system comprising the assembling device.

Description

Technical Field

[0001] The utility model relates to the technical field of valve manufacturing, in particular to an assembly device and an assembly system for a valve. Background Art

[0002] At present, in the valve assembly process, the traditional valve assembly process is to first assemble the valve seat ring onto the valve body through an extrusion process, move the valve body from the extrusion station for assembling the valve seat ring to the tightening station for assembling the sealing box, and then screw the sealing box into the valve body, and then perform other subsequent operations. The two-step assembly process of the valve seat ring and the sealing box has many obvious defects.

[0003] Traditional valve assembly has many disadvantages: First, the numerous processes directly lead to the increase of the complexity of the overall process. Each additional process means that more manpower, material resources and time costs are required. Long working hours not only affect the delivery speed of products, but also increase the operating costs of enterprises. Secondly, the additional steps of parts handling are an issue that cannot be ignored. During the handling process, parts may be damaged by collisions, scratches, etc., which will affect the quality of the product. Moreover, handling requires manpower and material resources, adding unnecessary workload. Furthermore, unexpected troubles may occur during handling, such as loss and confusion of parts. This will not only lead to production interruptions, but also may cause a series of quality control problems, further reducing production efficiency. Utility Model Content

[0004] The utility model aims to provide a valve assembly device, which can assemble a valve seat ring and a sealing box to a valve body at one station.

[0005] Another object of the present invention is to provide an assembly system including the assembly device of the valve, which can assemble the valve seat ring and the sealing gland to the valve body at one station.

[0006] The utility model provides a valve assembly device, comprising: a workbench, an extrusion mechanism arranged above the workbench, and a tightening mechanism arranged below the workbench. The workbench comprises a base. The base is used to place the valve body located at the assembly position. The extrusion mechanism can press the valve seat ring combined with the extrusion mechanism into the valve body located at the assembly position from top to bottom along a pressing direction. The tightening mechanism can drive the sealing box combined with it to be screwed into the valve body located at the assembly position from bottom to top along the opposite direction of the pressing direction. When the sealing box is screwed into the valve body, it rotates around a first axis parallel to the pressing direction.

[0007] By arranging an extrusion mechanism and a tightening mechanism at the upper and lower parts of the workbench respectively, the two-step operation of extruding the valve seat ring and tightening the sealing box can be completed at the same workstation, thereby reducing process steps, improving production efficiency and saving costs.

[0008] In yet another schematic embodiment of an assembly device for a valve, the pressing mechanism includes a cam divider, several pressing members, and a driving member. The cam divider includes an indexing plate. The indexing plate is capable of rotating about a second axis parallel to the pressing direction. The several pressing members are evenly and spacedly distributed along the circumference of the indexing plate, and each pressing member is movably disposed through the indexing plate along the pressing direction and its reverse direction. The cam divider can rotate each pressing member to its working position, and the pressing member located at the working position can rush into the valve body located at the assembly position along the pressing direction to press the valve seat ring combined with the pressing member into the valve body. The driving member is disposed on the indexing plate, and it can drive the indexing plate to rotate and drive the pressing member located at the working position to move along the pressing direction and its reverse direction. Thereby, different specifications of valves can be assembled by setting pressing members of different specifications, and the rotation of the pressing members to their working positions can be accurately controlled, which is beneficial to improving the efficiency of valve assembly and the product qualification rate.

[0009] In yet another schematic embodiment of an assembly device for a valve, the pressing member includes a pressing rod, a pressing ring, and several spring plungers. The pressing rod is movably disposed through the indexing plate along the pressing direction and its reverse direction. The pressing ring is sleeved on the pressing rod. The several spring plungers are disposed on the pressing rod and are located in front of the pressing ring along the pressing direction. The several spring plungers are evenly arranged along the circumference of the pressing rod and protrude radially along the pressing rod. The valve seat ring sleeved on the pressing rod can be fixed to the pressing rod under the action of the elastic restoring force of the several spring plungers. The valve seat ring has a bearing end. The pressing ring has a pressing end facing the bearing end. During the process of the pressing rod rushing into the valve body located at the assembly position along the pressing direction, the pressing end presses the bearing end to embed the valve seat ring into the valve seat ring installation groove of the valve body. Thereby, it is convenient to sleeve the valve seat ring onto the pressing rod, easy to press the valve seat ring into the valve body, and beneficial to improving the assembly efficiency.

[0010] In yet another schematic embodiment of an assembly device for a valve, the pressing end is in the shape of a circular column ring, and its front end along the pressing direction is a chamfered end. During the process of the pressing rod rushing into the valve body located at the assembly position along the pressing direction, the front end of the pressing end can be embedded into the end face annular groove of the bearing end to extrude the outer side wall of the end face annular groove outward, so that the outer side wall expands and deforms outward and is embedded into the valve seat ring installation groove of the valve body. Thereby, the assembled valve seat ring is not easily detached from the valve body, which is beneficial to obtaining a stable and reliable assembly.

[0011] In yet another schematic embodiment of an assembly device for a valve, the driving member is a servo electric cylinder. Thereby, it is convenient to control the rotation of the indexing plate and the movement of the pressing member.

[0012] In another schematic embodiment of an assembly device for a valve, the tightening mechanism includes a tightening member and a first cylinder. The tightening member includes a motor and a tightening sleeve. The end face of the rear end of the tightening sleeve along the pressing-in direction forms a receiving groove for receiving the sealing gland. The tightening sleeve is connected to the output shaft of the motor, and the tightening sleeve can drive the sealing gland to rotate around the first axis under the drive of the motor. The cylinder block of the first cylinder is connected to the workbench, and the piston rod is connected to the motor. The first cylinder can drive the tightening member to move along the pressing-in direction and its reverse direction. The structure of this tightening mechanism is simple and easy to operate.

[0013] In another schematic embodiment of an assembly device for a valve, the tightening mechanism further includes a torque controller. The torque controller is connected to the motor to control the torque of the output shaft of the motor. The valve assembled thereby has high tightening torque stability.

[0014] In another schematic embodiment of an assembly device for a valve, the assembly device further includes a limiting mechanism. The limiting mechanism includes a double-link assembly, a swing rod, a limiting member, and a second cylinder. One end of the double-link assembly is rotatably connected to the workbench around a third axis parallel to the first direction. One end of the swing rod is connected to the other end of the double-link assembly, and the other end is rotatably connected to the workbench around a fourth axis parallel to the first direction. The limiting member is fixedly connected to the swing rod. The cylinder block of the second cylinder is connected to the workbench, and the piston rod is connected to the double-link assembly. The second cylinder can drive the double-link assembly to move, thereby driving the limiting member to rotate around the fourth axis to limit the displacement of the valve body placed at the assembly position. Thereby, the valve body can be stably placed on the base, which is beneficial to the subsequent assembly process and also beneficial to improving the assembly efficiency and product qualification rate.

[0015] In another schematic embodiment of an assembly device for a valve, the workbench includes a workbench body, a track, and a servo motor. The track is arranged on the workbench body and extends along a first direction, and the first direction is perpendicular to the pressing-in direction. The base is slidably connected to the track and can move to an extrusion station. When the base is at the extrusion station, the valve body placed on the base is at the assembly position. The servo motor can drive the base to move along the first direction and its reverse direction.

[0016] The present utility model also provides an assembly system for a valve, including the above-mentioned assembly device, a detection component, a relay box, and a control device. The detection component is used to detect whether the valve body, valve seat ring, sealing gland, and / or extrusion part reach a predetermined position or state. The relay box is signal-connected to the detection component. The control device is signal-connected to the relay box and the assembly device.

[0017] By completing the two operations of pressing the valve seat ring and tightening the sealing gland at the same station, the process steps are reduced, the production efficiency is improved, and the cost is saved. Description of the Drawings

[0018] The following drawings only schematically illustrate and explain the present utility model, and do not limit the scope of the present utility model.

[0019] Figure 1 It is a schematic cross-sectional view for explaining the installation of a valve seat ring and a stuffing box in a valve body.

[0020] Figure 2 It is a schematic structural view of a schematic embodiment of an assembly device for a valve.

[0021] Figure 3 It is a partial cross-sectional view for explaining a schematic embodiment of an extrusion member.

[0022] Figure 4 It is Figure 1 an enlarged view of M.

[0023] Figure 5 It is a partial cross-sectional view for explaining another schematic embodiment of an extrusion member.

[0024] Figure 6 It is Figure 1 an enlarged view of N.

[0025] Figure 7 It is a schematic structural view for explaining a tightening mechanism and a limiting mechanism.

[0026] Figure 8 It is a partial cross-sectional view for explaining the tightening mechanism.

[0027] Figure 9 It is a schematic view of a schematic embodiment of an assembly system for a valve.

[0028] Description of Reference Numerals

[0029] 100 Assembly device

[0030] 10 Workbench

[0031] 11 Base

[0032] 12 Workbench body

[0033] 13 Track

[0034] 14 Servo motor

[0035] 20 Extrusion mechanism

[0036] 21 Cam divider

[0037] 211 Indexing plate

[0038] 23 Extrusion member

[0039] 231 compression bar

[0040] 232 compression ring

[0041] 233 spring plunger

[0042] 234 extrusion end

[0043] 235 bushing

[0044] 25 driving part

[0045] 30 tightening mechanism

[0046] 31 tightening part

[0047] 311 motor

[0048] 312 tightening sleeve

[0049] 313 receiving groove

[0050] 33 first cylinder

[0051] 35 torque controller

[0052] 37 guide block

[0053] 40 limiting mechanism

[0054] 41 double-link assembly

[0055] 43 swing rod

[0056] 45 limiting part

[0057] 47 second cylinder

[0058] 60 valve body

[0059] 611 three-way valve seat ring installation groove

[0060] 612 two-way valve seat ring installation groove

[0061] 62 two-way valve seat ring

[0062] 621 circular cylindrical main body

[0063] 622 sealing ring

[0064] 623 second pressure-bearing end

[0065] 624 end-face annular groove

[0066] 63 three-way valve seat ring

[0067] 631 first pressure-bearing end

[0068] 632 second pressure-bearing end

[0069] 64 sealing gland

[0070] 65 Valve stem

[0071] 66 Valve plug

[0072] 67 Snap ring

[0073] 70 Detection component

[0074] 71 Valve body in-place sensor

[0075] 72 Height sensor

[0076] 73 Two-way valve seat ring in-place sensor

[0077] 74 Press bar in-place sensor

[0078] 75 Stuffing box in-place sensor

[0079] 76 Valve stem in-place sensor

[0080] 77 Three-way valve seat ring in-place sensor

[0081] 80 Relay box

[0082] 90 Control device

[0083] D1 First direction

[0084] E Pressing direction

[0085] X1 First axis

[0086] X2 Second axis

[0087] X3 Third axis

[0088] X4 Fourth axis Detailed implementation manners

[0089] For a clearer understanding of the technical features, objectives, and effects of the utility model, the detailed implementation manners of the utility model are now described with reference to the accompanying drawings. The same reference numerals denote the same parts in the drawings.

[0090] In this document, "schematic" means "serving as an example, instance, or illustration", and any illustration or implementation manner described as "schematic" in this document should not be construed as a more preferred or more advantageous technical solution.

[0091] In this document, "first", "second", "third", and "fourth" do not indicate their importance level or order, etc., but are only used to represent their differences for the convenience of document description.

[0092] Figure 1 It is a cross-sectional schematic diagram for illustrating the installation of a valve seat ring and a stuffing box in a valve body. Figure 2Schematic structural diagram of a schematic embodiment of an assembly device for a valve. The valve is, for example, a flow-limiting valve, which can be a three-way flow-limiting valve or a two-way flow-limiting valve. Refer to Figure 1 and Figure 2 , Figure 1 The valve shown is a three-way limit valve, which has three channels A, AB, and B. The three-way limit valve is sequentially assembled with a seal 64, a two-way valve seat ring 62, a valve plug 66 with a valve stem 65, a three-way valve seat ring 63, and a snap ring 67 in the reverse direction of the pressing direction E (i.e., Figure 1 the direction from bottom to top in Figure 1 ). The valve stem 65 passes through the seal 64 and is connected to an actuator end. The movement of the actuator end can drive the valve stem 65 to move in the valve body 60 along the pressing direction E and its reverse direction. The valve plug 66 is fixedly sleeved on the valve stem 65 and can move relative to the two-way valve seat ring 62 along the pressing direction E and its reverse direction between Figure 1 the position shown in

[0093] and a top position. The top position is the position where the valve plug 66 moves to abut against the snap ring 67. One end of the valve plug 66 facing the seal 64 is open, and several holes are provided on the valve plug 66 ( Figure 1 not shown in Figure 1 ). The holes on the valve plug 66 can be distributed in a gradient, evenly, or other distribution patterns along the pressing direction E, depending on the application scenario of the valve. Figure 1 Next, the flow of fluid is used to explain how the valve plug 66 with the valve stem 65 functions to limit the flow. Assume that the flow direction of the fluid is from the AB channel to the A channel or the B channel, as shown by the dashed arrow in Figure 1 . At the position shown in Figure 1 , the AB channel and the B channel of the valve body 60 are unobstructed, and the fluid can flow from the AB channel to the B channel. However, the fluid in the AB channel of the valve body 60 cannot pass through the valve plug 66 and flow into the A channel of the valve body 60. At this time, the AB channel - A channel of the valve body 60 is in a fully closed state. As the valve stem 65 moves in the reverse direction of the pressing direction E to the top position, the area of the valve plug 66 facing the AB channel gradually increases, and more and more holes exposed to the AB channel also appear. The fluid in the AB channel of the valve body 60 passes through more and more holes on the valve plug 66 and flows into the A channel of the valve body 60. At the top position, the fluid flow rate into the A channel of the valve body 60 is the largest. Therefore, the position of the valve plug 66 can be adjusted by the movement of the valve stem 65 to control the fluid flow rate from the AB channel into the A channel, that is, to play a role in limiting the flow.

[0094] For the three-way flow-limiting valve, the assembly sequence of the valve seat ring and the seal into the valve body is as follows: First, the two-way valve seat ring and the seal are assembled through the assembly device, then the valve plug with the valve stem is manually installed into the valve body at other workstations, then the three-way valve seat ring is assembled into the valve body through the assembly device, and finally, at other workstations Figure 1Manually install a snap ring above the middle three-way valve seat ring to prevent the three-way valve seat ring from disengaging from the valve body.

[0095] For the two-way flow-limiting valve, the assembly sequence of the valve seat ring and the seal housing to the valve body is as follows: First, assemble the two-way valve seat ring and the seal housing through the assembly device, then manually install the valve plug with the valve stem to the valve body at other workstations, and finally manually install the snap ring and the flange above the position where the three-way valve seat ring is installed in Figure 1 the middle at other workstations.

[0096] In the illustrative embodiment, refer to Figure 2 , the assembly device of the valve includes a workbench 10, a pressing mechanism 20 disposed above the workbench 10, and a screwing mechanism 30 disposed below the workbench 10. The workbench 10 includes a base 11. The base 11 is used to place the valve body 60 located at the assembly position. Figure 2 The rectangular parallelepiped outlined by the dotted line in

[0097] schematically shows the valve body 60 located at the assembly position. The pressing mechanism 20 can press the valve seat ring combined with the pressing mechanism 20 into the valve body 60 located at the assembly position from top to bottom along a pressing direction E. The screwing mechanism 30 can drive the seal housing 64 combined with it to screw into the valve body 60 located at the assembly position from bottom to top along the opposite direction of the pressing direction E. When the seal housing 64 is screwed into the valve body 60, it rotates around a first axis X1 parallel to the pressing direction E.

[0098] Refer to Figure 2 , the pressing mechanism 20 includes a cam divider 21, 13 pressing members 23 ( Figure 2 only one is marked in Figure 2 ) and a driving member 25. The cam divider 21 includes a indexing plate 211. The indexing plate 211 is a 15-station indexing plate, that is, the indexing plate 211 can install 15 pressing members 23.

[0099] A plurality of extruding members 23 are evenly and spacedly distributed along the circumferential direction of the indexing plate 211, and each extruding member 23 is movably disposed through the indexing plate 211 along the pressing-in direction E and its reverse direction. In practical applications, the specifications of the extruding members 23 can be different to adapt to the assembly of valves with different specifications. Each extruding member 23 has its working position, and the cam divider 21 can rotate each extruding member 23 to its working position. The extruding member 23 located at the working position can rush into the valve body 60 located at the assembly position along the pressing-in direction E to press the valve seat ring combined with the extruding member 23 into the valve body 60.

[0100] The driving member 25 is disposed on the indexing plate 211, and it can drive the indexing plate 211 to rotate and drive the extruding member 23 located at the working position to move along the pressing-in direction E and its reverse direction. In the illustrative embodiment, the driving member 25 is a servo electric cylinder. This facilitates the control of the rotation of the indexing plate and the movement of the extruding member.

[0101] In practical applications, each extruding member 23 is locked by a locking pin, and the locking pin is not shown in Figure 2 . The selected extruding member 23 among the plurality of extruding members 23 can be rotated to its working position by the cam divider 21. The operator combines the valve seat ring to this extruding member 23, pulls out the locking pin of this extruding member 23, and drives this extruding member 23 to rush into the valve body 60 along the pressing-in direction E through the driving member 25 to press the valve seat ring into the valve body 60. After the extruding member 23 is pressed into the valve body 60, a tightening process is performed. Then, under the drive of the driving member 25, this extruding member 23 returns to its working position along the reverse direction of the pressing-in direction E, and repeats the three steps of pressing the valve seat ring, tightening, and returning to the working position. If this extruding member 23 completes all the valve seat ring assembly work and returns to its working position, the operator locks it with a locking pin.

[0102] The extrusion mechanism can assemble valves with different specifications by setting extruding members with different specifications, and accurately control the rotation of the extruding member to the working position by configuring the cam divider, which is beneficial to improving the efficiency of valve assembly and the product qualification rate.

[0103] In the illustrative embodiment, refer to Figure 2, the workbench 10 includes a workbench body 12, two rails 13 and a servo motor 14. The rails 13 are provided on the workbench body 12 and extend along a first direction D1, and the first direction D1 is perpendicular to the pressing-in direction E. The base 11 is slidably connected to the rails 13 and can move to an extrusion station and a loading station. When the base 11 is at the extrusion station, the valve body 60 placed on the base 11 is at the assembly position. At the loading station where the rails 13 are away from the extrusion station, an operator places the valve body 60 on the base 11. The servo motor 14 can drive the base 11 to move along the first direction D1 and its reverse direction. In other schematic embodiments, there can also be one rail 13. When the rails 13 are installed on the workbench 10 and the base 11 can move on the rails 13, in practical applications, multiple sensors are needed to detect the assembly process. Therefore, multiple sensors can be dispersed along the rails 13 instead of being crowded at the extrusion station. Having multiple sensors crowded at the extrusion station will affect the detection effect.

[0104] Figure 3 It is a cross-sectional schematic diagram for illustrating a schematic embodiment of the extrusion part. Figure 4 For Figure 1 The enlarged view of M. Refer to Figure 3 And Figure 4 , in the schematic embodiment, the extrusion part 23 includes a pressing rod 231, a pressing ring 232 and several spring plungers 233. Each spring plunger 233 is disposed, for example, in a plunger hole opened along the radial direction of the pressing rod 231. The pressing rod 231 is movably inserted through the indexing plate 211 along the pressing-in direction E and its reverse direction.

[0105] Several spring plungers 233 are located in front of the pressing ring 232 along the pressing-in direction E, are evenly arranged circumferentially along the pressing rod 231 and protrude radially along the pressing rod 231. In the schematic embodiment, the combination manner of the valve seat ring and the extrusion mechanism 20 is a sleeve type. The valve seat ring sleeved on the pressing rod 231 can be fixed to the pressing rod 231 under the action of the elastic restoring force of several spring plungers 233. The valve seat ring is fixed to the rear side of the spring plungers 233 along the pressing-in direction E, that is Figure 3 In the valve seat ring is fixed above the spring plungers 233. This facilitates stably sleeving the valve seat ring onto the pressing rod 231. In other schematic embodiments, the combination manner of the valve seat ring and the extrusion mechanism 20 can also be selected according to actual application scenarios in other ways.

[0106] The pressing ring 232 is sleeved on the pressing rod 231. Figure 3The shown valve seat ring is a three-way valve seat ring 63, which is a circular columnar structure with a flanged edge. The three-way valve seat ring 63 has a first pressure-bearing end 631. The pressing ring 232 has a pressing end 234 facing the first pressure-bearing end 631. One end of the three-way valve seat ring 63 away from the first pressure-bearing end 631 is a chamfered end, and the cross-sectional shape of the chamfered end parallel to the pressing direction E is trapezoidal. During the process of the pressing rod 231 pressing into the valve body 60 at the assembly position along the pressing direction E, the pressing end 234 presses the first pressure-bearing end 631 to cause several spring plungers 233 to retract under force, and the three-way valve seat ring 63 is pushed out of the pressing rod 231. Then, under the guiding action of the chamfered end, the three-way valve seat ring 63 is inserted into the three-way valve seat ring installation groove 611 of the valve body 60. This helps to improve the assembly efficiency.

[0107] Figure 5 It is a cross-sectional schematic diagram for explaining another schematic embodiment of the pressing member. Figure 6 For Figure 1 the enlarged view of N. See Figure 5 and Figure 6 , Figure 5 The shown pressing member 23 and Figure 3 the same parts of the shown pressing member 23 will not be elaborated again. Their differences lie in the pressing end 234 of the pressing ring 232. See Figure 5 , whose pressing end 234 is a circular columnar shape. The front end of the pressing end 234 along the pressing direction E is a chamfered end, and the cross-sectional shape of the chamfered end parallel to the pressing direction E is trapezoidal. Figure 5 The shown valve seat ring is a two-way valve seat ring 62. The two-way valve seat ring 62 includes a circular column main body 621 and a sealing ring 622. A groove is formed by the middle part of the circular column main body 621 being recessed to accommodate the sealing ring 622, and the sealing ring 622 is used to seal the fluid in the valve body 60. The two-way valve seat ring 62 has a second pressure-bearing end 623 to bear the extrusion of the pressing ring 232. An end face annular groove 624 is formed on the end face of the second pressure-bearing end 623. During the process of the pressing rod 231 pressing into the valve body 60 at the assembly position along the pressing direction E, the front end of the pressing end 234 of the pressing ring 232 can be inserted into the end face annular groove 624 of the second pressure-bearing end 623 to extrude the outer side wall of the end face annular groove 624 outward, causing the outer side wall to expand and deform outward and be inserted into the two-way valve seat ring installation groove 612 of the valve body 60. For the convenience of explanation, Figure 6 the state of the outer side wall before the outer expansion deformation in

[0108] SeeFigure 2 In a schematic embodiment, a bushing 235 is sleeved outside each pressure rod 231 to protect the pressure rod 231 from wear.

[0109] Figure 7 It is a schematic structural diagram for illustrating the limiting mechanism and the screwing mechanism. In a schematic embodiment, refer to Figure 7 , the assembling device further includes a limiting mechanism 40. The limiting mechanism 40 includes a double-link assembly 41, a swing rod 43, a limiting member 45, and a second cylinder 47. One end of the double-link assembly 41 is rotatably connected to the workbench 10 about a third axis X3 parallel to the first direction D1. One end of the swing rod 43 is connected to the other end of the double-link assembly 41, and the other end is rotatably connected to the workbench 10 about a fourth axis X4 parallel to the first direction D1. The limiting member 45 is fixedly connected to the swing rod 43. The cylinder block of the second cylinder 47 is connected to the workbench 10, and the piston rod is connected to the double-link assembly 41. The second cylinder 47 can drive the double-link assembly 41 to move, thereby driving the limiting member 45 to rotate about the fourth axis X4 to limit the displacement of the valve body 60 placed at the assembling position. Thereby, the valve body can be stably placed on the base, which is beneficial to the subsequent assembling process and also beneficial to improving the assembling efficiency and the product qualification rate.

[0110] Figure 8 It is a partial cross-sectional view for illustrating the screwing mechanism. Refer to Figure 7 and Figure 8 , in a schematic embodiment, the screwing mechanism 30 includes a screwing member 31 and a first cylinder 33. The screwing member 31 includes a motor 311 and a screwing sleeve 312. An accommodating groove 313 is formed on the end face of the rear end of the screwing sleeve 312 along the pressing-in direction E to accommodate the sealing ring 64. The screwing sleeve 312 is connected to the output shaft of the motor 311, and the screwing sleeve 312 can drive the sealing ring 64 to rotate about the first axis X1 under the drive of the motor 311. The cylinder block of the first cylinder 33 is connected to the workbench 10, and the piston rod is connected to the motor 311. The first cylinder 33 can drive the screwing member 31 to move along the pressing-in direction E and its reverse direction. The structure of this screwing mechanism is simple and easy to operate.

[0111] Before screwing in the sealing ring 64, the extrusion process has been completed, but the extrusion part 23 is still inside the valve body 60. During the process of starting the screwing mechanism 30 to screw the sealing ring 64 into the valve body 60 placed on the base 11, the driving part 25 is a servo electric cylinder, and the sealing ring 64 and the extrusion part 23 can be centered with small error.

[0112] In a schematic embodiment, a guide block 37 is further wrapped around the outer side of the tightening sleeve 312. The guide block 37 is, for example, threadedly connected to the workbench body 12, and its upper edge is higher than the upper edge of the tightening sleeve 312. An operator inserts the seal gland 64 into the receiving groove 313 from the workbench body 12 along the pressing-in direction E. In other schematic embodiments, the combination manner of the seal gland 64 and the tightening mechanism 30 can also be selected in other ways according to the actual application scenarios.

[0113] In a schematic embodiment, referring to Figure 7 , the tightening mechanism 30 further includes a torque controller 35. The torque controller 35 is connected to the motor 311 to control the torque of the output shaft of the motor 311. The valve assembled thereby has higher tightening torque stability.

[0114] The present utility model further provides an assembly system for a valve, including the above-mentioned assembly device 100, a detection component 70, a relay box 80, and a control device 90. The detection component 70 is used to detect whether the valve body 60, the valve seat ring, the seal gland 64, and / or the extrusion member 23 reach a predetermined position or state. The relay box 80 is signal-connected to the detection component 70 to collect the signals of the detection component 70. The control device 90, such as a PLC, is signal-connected to the relay box 80 and the assembly device. The control device 90 acquires the signals of the detection component 70, generates execution commands, and issues commands to the assembly device, and the assembly device acts according to the commands.

[0115] Figure 9 It is a schematic diagram for illustrating a schematic embodiment of the assembly system for a valve. In a schematic embodiment, referring to Figure 9 , the detection component 70 includes a valve body in-position sensor 71, a height sensor 72, a two-way valve seat ring in-position sensor 73, a pressing rod in-position sensor 74, a seal gland in-position sensor 75, a valve stem in-position sensor 76, and a three-way valve seat ring in-position sensor 77.

[0116] The valve body in-position sensor 71 is arranged at the loading station of the workbench 10, and it is used to detect whether the valve body 60 is placed on the base 11.

[0117] The height sensor 72 is arranged on the upper side of the workbench 10 between the loading station and the extrusion station, and it is used to detect the height of the valve body 60.

[0118] The two-way valve seat ring in-position sensor 73 is arranged on the workbench 10 at the extrusion station, and it is used to detect whether a two-way valve seat ring 62 is sleeved on the selected pressing rod 231, whether the two-way valve seat ring 62 is installed upside down, and whether a sealing ring 622 is installed on the two-way valve seat ring 62.

[0119] The strut in-place sensor 74 is arranged on the indexing plate 211 and is used to detect whether the selected strut 231 is installed in place.

[0120] The seal gland in-place sensor 75 is arranged on the tightening mechanism 30 and is used to detect whether the seal gland 64 is placed in the receiving groove 313.

[0121] The valve stem in-place sensor 76 is arranged on the lower side of the workbench 10 between the loading station and the extrusion station and is used to detect whether the valve stem 65 is installed in the valve body 60.

[0122] The three-way valve seat ring in-place sensor 77 is arranged on the workbench 10 at the extrusion station and is used to detect whether the selected strut 231 is sleeved with a three-way valve seat ring 63 and whether the three-way valve seat ring 63 is installed upside down.

[0123] In the actual assembly process of the two-way flow-limiting valve, first, place the seal gland in the receiving groove, and the seal gland in-place sensor performs detection; place the valve body on the base at the loading station, and the valve body in-place sensor performs detection; during the process of pressing the button to move the base to the extrusion station, the height sensor performs detection; after the base moves to the extrusion station, the control device controls the indexing plate to rotate to select the strut, and the strut in-place sensor performs detection; sleeve the two-way valve seat ring on the strut, and the two-way valve seat ring in-place sensor performs detection; start the strut to press the two-way valve seat ring into the valve body; start the tightening mechanism to screw in the seal gland; the strut retracts to its working position; the base moves to the loading station, and the valve body is removed to facilitate manual assembly of the valve plug with the valve stem, the snap ring, and the bottom flange at other stations.

[0124] In the actual assembly process of the three-way flow-limiting valve, first, place the seal gland in the receiving groove, and the seal gland in-place sensor performs detection; place the valve body on the base at the loading station, and the valve body in-place sensor performs detection; during the process of pressing the button to move the base to the extrusion station, the height sensor performs detection; after the base moves to the extrusion station, the control device controls the indexing plate to rotate to select the strut, and the strut in-place sensor performs detection; sleeve the two-way valve seat ring on the strut, and the two-way valve seat ring in-place sensor performs detection; start the strut to press the two-way valve seat ring into the valve body; start the tightening mechanism to screw in the seal gland; the strut retracts to its working position; the base moves to the loading station, install the valve plug with the valve stem, and the valve stem in-place sensor performs detection; the base moves to the extrusion station, the control device controls the indexing plate to rotate to select the strut, and the strut in-place sensor performs detection; sleeve the three-way valve seat ring on the strut, and the three-way valve seat ring in-place sensor performs detection; start the strut to press the three-way valve seat ring into the valve body; the strut retracts to its working position; the base moves to the loading station, and the valve body is removed to facilitate manual assembly of the snap ring at other stations.

[0125] In the above steps, if there is no abnormality after each sensor performs the detection, the control device commands the assembly device to perform the next operation; if an abnormality is found after each sensor performs the detection, the control device commands the assembly device to report an error, and the operator can perform manual error correction according to the reported error situation.

[0126] When selecting the pressure rod 231, the control device 90 selects the pressure rod 231 according to the model of the valve body 60 input by the operator, and rotates the selected pressure rod 231 to its working position by controlling the rotation of the indexing plate 211. The rotation path of the indexing plate 211 with the smallest rotation angle of the indexing plate 211 is the most preferred. For example, as Figure 2 shown, if the selected pressure rod 231 is the first pressure rod 231 on the right side of the two idle workstations, the indexing plate 211 will rotate 72° in the clockwise direction (360° / 15)*3, rather than rotating 360° - 72° = 288° in the counterclockwise direction.

[0127] By completing the two operations of extruding the valve seat ring and tightening the sealing gland on the same workstation, the process steps are reduced, the production efficiency is improved, and the cost is saved.

[0128] It should be understood that although this specification is described according to each embodiment, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0129] The series of detailed descriptions listed above are only specific descriptions of the feasible embodiments of the present invention, and they are not intended to limit the protection scope of the present invention. Any equivalent implementation or change made without departing from the technical spirit of the present invention, such as the combination, division, or repetition of features, should be included in the protection scope of the present invention.

Claims

1. A valve assembly device, characterized in that: include: A workbench (10) comprising a base (11), wherein the base (11) is used to place the valve body in an assembly position; a pressing mechanism (20) disposed above the workbench (10), the pressing mechanism (20) being capable of pressing a valve seat ring assembled with the pressing mechanism (20) from top to bottom into the valve body located at the assembly position along a pressing direction (E); as well as A tightening mechanism (30) is arranged below the workbench (10), and the tightening mechanism (30) can drive a sealing box combined therewith to be screwed into the valve body located at the assembly position from bottom to top in the opposite direction of the pressing direction (E), and when the sealing box is screwed into the valve body, it rotates around a first axis (X1) parallel to the pressing direction (E).

2. The assembly device according to claim 1, characterized in that The extrusion mechanism (20) comprises: A cam divider (21) comprising a dividing plate (211) which is rotatable about a second axis (X2) parallel to the pressing direction (E), A plurality of extrusion pieces (23) are evenly and spacedly distributed along the circumference of the indexing plate (211), each of the extrusion pieces (23) being movably arranged on the indexing plate (211) along the pressing direction (E) and the opposite direction thereof, the cam divider (21) being capable of rotating each of the extrusion pieces (23) to its working position, the extrusion piece (23) at the working position being capable of punching into the valve body at the assembly position along the pressing direction (E) so as to press the valve seat ring assembled with the extrusion piece (23) into the valve body, and A driving member (25) is arranged on the indexing plate (211), and the driving member (25) can drive the indexing plate (211) to rotate and can drive the extrusion member (23) located at the working position to move along the pressing direction (E) and the opposite direction.

3. The assembly device according to claim 2, characterized in that: The extrusion member (23) comprises: a pressing rod (231) which is movably disposed on the indexing plate (211) along the pressing direction (E) and the opposite direction thereof, a pressing ring (232) which is sleeved on the pressing rod (231), and A plurality of spring plungers (233) are arranged on the pressure rod (231) and are located in front of the pressure ring (232) along the pressing direction (E). The plurality of spring plungers (233) are evenly arranged along the circumference of the pressure rod (231) and protrude radially along the pressure rod (231). The valve seat ring sleeved on the pressure rod (231) can be fixed to the pressure rod (231) under the action of the elastic restoring force of the plurality of spring plungers (233). The valve seat ring has a pressure-bearing end, and the pressure ring (232) has an extrusion end (234) facing the pressure-bearing end. When the pressure rod (231) is pressed into the valve body located at the assembly position along the pressing direction (E), the extrusion end (234) squeezes the pressure-bearing end so that the valve seat ring is embedded in the valve seat ring mounting groove of the valve body.

4. The assembly device according to claim 3, characterized in that: The extrusion end (234) is annular and cylindrical, and its front end along the pressing direction (E) is a chamfered end. When the pressure rod (231) is pressed into the valve body at the assembly position along the pressing direction (E), the front end of the extrusion end (234) can be embedded in the end face annular groove of the pressure-bearing end to squeeze the outer wall of the end face annular groove outward, so that the outer wall expands and deforms outward and is embedded in the valve seat ring mounting groove of the valve body.

5. The assembly device according to claim 2, characterized in that: The driving member (25) is a servo electric cylinder.

6. The assembly device according to claim 1, characterized in that The tightening mechanism (30) comprises: A tightening member (31), comprising: a motor (311), and a tightening sleeve (312), wherein the end surface of the tightening sleeve (312) at the rear end along the pressing direction (E) forms an accommodating groove (313) for accommodating the sealing box, the tightening sleeve (312) is connected to the output shaft of the motor (311), and the tightening sleeve (312) can drive the sealing box to rotate around the first axis (X1) under the drive of the motor (311); and A first cylinder (33), the cylinder seat of the first cylinder (33) is connected to the workbench (10), the piston rod is connected to the motor (311), and the first cylinder (33) can drive the tightening member (31) to move along the pressing direction (E) and the opposite direction.

7. The assembly device according to claim 6, characterized in that The tightening mechanism (30) further comprises a torque controller (35), wherein the torque controller (35) is connected to the motor (311) to control the torque of the output shaft of the motor (311).

8. The assembly device according to claim 1, characterized in that: The device further comprises a limiting mechanism (40), wherein the limiting mechanism (40) comprises: a double connecting rod assembly (41), one end of which is rotatably connected to the workbench (10) about a third axis (X3) parallel to the first direction (D1), a swing rod (43), one end of which is connected to the other end of the double-link assembly (41), and the other end of which is rotatably connected to the workbench (10) around a fourth axis (X4) parallel to the first direction (D1), a stopper (45) fixedly connected to the swing rod (43), and A second cylinder (47), whose cylinder seat is connected to the workbench (10) and whose piston rod is connected to the double-connecting rod assembly (41), is capable of driving the double-connecting rod assembly (41) to move, thereby driving the limiting member (45) to rotate around the fourth axis (X4) to limit the displacement of the valve body placed at the assembly position.

9. The assembly device according to claim 1, characterized in that: The workbench (10) comprises: a workbench body (12), a track (13) which is arranged on the workbench body (12) and extends along a first direction (D1), the first direction (D1) being perpendicular to the pressing direction (E), the base (11) being slidably connected to the track (13) and being movable to an extrusion station, and when the base (11) is located at the extrusion station, the valve body placed on the base (11) is located at the assembly position, and A servo motor (14) is capable of driving the base (11) to move along the first direction (D1) and the opposite direction.

10. A valve assembly system, characterized in that: include: An assembly device according to any one of claims 1 to 9, comprising an extrusion mechanism (20) arranged above the workbench (10), wherein the extrusion mechanism (20) comprises a plurality of extrusion members (23); a detection assembly (70) for detecting whether the valve body, the valve seat ring, the sealing gland and / or the extrusion member have reached a predetermined position or state; a relay box (80) whose signal is connected to the detection component (70); as well as A control device (90) whose signal connects the relay box (80) and the assembly device.

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