Automatic ball valve assembling device

Abstract

The invention relates to the technical field of ball valve assembling, in particular to an automatic ball valve assembling device which comprises a base, a top plate is fixedly mounted on the top wall of the base through a plurality of supporting columns, vertical plates are symmetrically mounted on the bottom wall of the top plate, and a plurality of assembling mechanisms are arranged on the top plate; the assembling mechanism comprises a first rotating shaft and a second rotating shaft which are rotationally connected to the side wall of the vertical plate, the side wall of the first rotating shaft is fixedly connected with a first connecting rod, one end of the first connecting rod is rotationally connected with a second connecting rod, the side wall of the second rotating shaft is fixedly connected with a gear and a third connecting rod in sequence, and the third connecting rod is rotationally connected with the second connecting rod; the top wall of the top plate is slidably connected with a spline shaft. Through the arrangement of the main shaft, the worm, the multiple connecting rods and other structures, parts placed in the valve body are rotationally pushed into the assembling position, then the assembling efficiency of the parts is improved, and the situation that the parts do reciprocating motion in the damage direction due to vertical downward direct pushing type assembling is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of ball valve assembly, and in particular to an automatic ball valve assembly device. Background Art

[0002] Ball valve, the opening and closing part (ball) is driven by the valve stem and rotates around the axis of the ball valve. It can also be used for fluid regulation and control. The hard-sealed V-type ball valve has a strong shear force between its V-type ball core and the metal valve seat with hard alloy surfacing, which is particularly suitable for media containing fibers, tiny solid particles, etc. The multi-way ball valve can not only flexibly control the confluence, diversion and flow direction switching of the medium in the pipeline, but also close any channel to connect the other two channels.

[0003] At present, in the process of assembling ball valves, it is necessary to assemble the opening and closing parts (ball), sealing rings, valve stems, valve covers and other structures into the valve body in turn along the vertical direction downward, and finally fix the valve covers and ball valves with multiple bolts to complete the assembly process of the ball valve. At present, the assembly of ball valves often relies on mechanical parts or manual work to assemble the opening and closing parts (ball), sealing rings, valve covers and valve stems and other structures into the valve body in turn, and then pick up the bolts, and finally tighten the bolts with an electric screwdriver. There are many redundant assembly actions, and in the process of assembly, other equipment is also needed to spray lubricating oil on the inside of the ball valve to lubricate and protect the various parts of the ball valve to ensure its normal operation and extend its service life.

[0004] Therefore, we propose an automatic assembly device for ball valves. Summary of the invention

[0005] The purpose of the present invention is to solve the problems existing in the prior art and to provide an automatic assembly device for a ball valve.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions: An automatic ball valve assembly device comprises a base, a top plate is fixedly mounted on the top wall of the base through a plurality of support columns, vertical plates are symmetrically mounted on the bottom wall of the top plate, and a plurality of assembly mechanisms are arranged on the top plate; The assembly mechanism includes a first rotating shaft and a second rotating shaft rotatably connected to the side wall of the vertical plate, the side wall of the first rotating shaft is fixedly connected to the first connecting rod, one end of the first connecting rod is rotatably connected to the second connecting rod, the side wall of the second rotating shaft is fixedly connected to the gear and the third connecting rod in sequence, the third connecting rod and the second connecting rod are rotatably connected, the top wall of the top plate is slidably connected with a spline shaft, the side wall of the spline shaft is fixedly connected with a plurality of annular teeth, the bottom wall of the spline shaft is fixedly connected with a hexagonal wrench through a one-way bearing, the bottom wall of the top plate is rotatably connected with the second gear, the spline shaft and the second gear are keyed, the inner wall of the top plate is rotatably connected with a main shaft, the side wall of the main shaft is fixed with a first gear and a worm, and the side wall of the first rotating shaft is fixed with a worm wheel; The side wall of the spline shaft is provided with an assembly mechanism for assembling the opening and closing member, the sealing ring and the valve stem.

[0007] Preferably, the assembly mechanism includes a connecting plate that passes through the side walls of two adjacent spline shafts, the two connecting plates are fixedly connected by a support plate, a cylinder is passed through the inner wall of the support plate, a manipulator component is fixedly connected to the bottom wall of the cylinder, a C-shaped plate is fixedly connected to the bottom wall of the top plate, a cylinder is fixedly connected to the bottom wall of the C-shaped plate, a guide groove is provided on the inner side wall of the cylinder, a circular shaft is provided on the top wall of the cylinder, a guide rod is fixedly connected to the side wall of the circular shaft, and the guide rod is slidably connected inside the guide groove.

[0008] Preferably, the cylindrical side wall is fixedly connected to a ring plate, the inner wall of the ring plate is slidably connected to a plurality of telescopic springs, the plurality of telescopic springs are fixedly connected to the support plate, the guide groove is composed of vertical grooves and spiral grooves connected in sequence, a spray pipe is embedded in the inner wall of the manipulator component, the top wall of the C-shaped plate is fixedly connected to a box body, a piston is sealingly and slidably connected to the inside of the box body, the top wall of the circular shaft is rotatably connected to a connecting rod, the end of the connecting rod away from the circular shaft passes through the cylinder, the C-shaped plate and the inner wall of the box body and is fixedly connected to the piston, and two limit rings are fixedly connected to the side walls of the connecting rod.

[0009] Preferably, a one-way liquid inlet pipe and a one-way liquid outlet pipe are fixedly connected through the inner wall of the box body, and the end of the one-way liquid outlet pipe away from the box body is fixedly connected to the spray pipe. A lubrication box is fixedly connected to the top of the top plate, and the end of the one-way liquid inlet pipe away from the box body is fixedly connected to the lubrication box.

[0010] Preferably, the top plate is provided with a plurality of feeding mechanisms for automatically cutting and assembling bolts, and each feeding mechanism comprises an inclined track fixedly connected to the top plate via a column, and an isolation plate is slidably connected through the bottom wall of the inclined track and the inner wall of the top plate, a wedge-shaped hole is provided on the inner wall of the isolation plate, and a return spring is fixedly mounted on the side wall of the isolation plate, and the other end of the return spring is fixedly connected to the bottom wall of the inclined track.

[0011] Preferably, the side wall of the main shaft is fixedly connected with a cam, the top wall of the top plate is symmetrically slidably connected with a wedge block, the inner wall of the wedge block is provided with a rectangular hole, the inner wall of the rectangular hole is slidably connected with a T-shaped plate, the side wall of the T-shaped plate is fixedly connected with a magnetic spring, and the other end of the magnetic spring is fixedly connected to the inner wall of the rectangular hole.

[0012] Preferably, the wedge-shaped hole and the wedge-shaped block are slidably connected, and the cam and the T-shaped plate slide against each other.

[0013] Preferably, a hexagonal hole is formed on the top wall of the spline shaft, and empty slots are symmetrically formed on the inner wall of the hexagonal hole, and an electric blocker is installed on the inner wall of the empty slot.

[0014] Preferably, a plurality of folding rods are fixedly connected to the top wall of the top plate, the other end of each of the folding rods is fixedly connected to a motor, and each of the motors is coaxially fixed with a main shaft.

[0015] Preferably, the gear is meshingly connected with a plurality of adjacent annular teeth, the worm wheel is meshingly connected with an adjacent worm, and the first gear is meshingly connected with the second gear.

[0016] Compared with the prior art, the present invention has the following advantages: 1. By setting structures such as a main shaft, a worm and multiple connecting rods, when the manipulator parts move downward in the vertical direction, these parts can be moved downward one by one into the valve body, and then the cylinder will drive the manipulator parts to rotate. Then the manipulator parts can rotate synchronously in the downward process, and then the parts placed in the valve body can be rotated and pushed into the assembly position, thereby improving the assembly efficiency of the parts and avoiding the damage of the parts caused by the vertical downward push assembly direction reciprocating motion; 2. When the limit ring on the upper side drives the piston to move downward, the piston will squeeze the lubricating oil inside the box into the spray pipe through the one-way liquid outlet pipe, and then this part of the lubricating oil will enter the valve body to provide lubrication protection between the valve body and the assembled parts; 3. After these parts are assembled one by one, by setting up structures such as electric blockers, hexagonal wrenches and annular teeth, the spline shaft will drive the bolts to move downward synchronously in the later stage of downward movement, and then the bolts and the screw holes of the valve cover will be aligned under the blocking effect of the electric blocker, and the spline shaft is still in continuous rotation. Then, the spline shaft will rotate and tighten the bolts downward through the hexagonal wrench to complete the bolt fixation of the valve cover and the valve body; 4. When the motor drives the main shaft to rotate, when it is necessary to add bolts to the hexagonal hole, by setting structures such as magnetic springs, T-shaped plates and wedge blocks, the wedge block drives the isolation plate to move downward a certain distance through the wedge hole, thereby allowing the bolts inside the inclined track to enter the hexagonal hole for bolt addition. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the appearance structure of an automatic ball valve assembly device proposed by the present invention; Figure 2 for Figure 1 A magnified schematic diagram of the structure of part A; Figure 3 This is a bottom view structural schematic diagram of a ball valve automatic assembly device proposed by the present invention; Figure 4 This is a schematic diagram of the internal structure of a cylinder in an automatic ball valve assembly device proposed by the present invention; Figure 5 for Figure 4 A magnified schematic diagram of the structure of part B; Figure 6 This is a schematic diagram of the internal structure of a box body in a ball valve automatic assembly device proposed by the present invention; Figure 7 This is a schematic diagram of the internal structure of a rectangular hole in an automatic assembly device for a ball valve proposed by the present invention; Figure 8 A schematic diagram of the position relationship of the guide grooves in the ball valve automatic assembly device proposed by the present invention; Fig. 9 The present invention provides a schematic diagram of the internal structure of a hollow groove in an automatic ball valve assembly device.

[0018] In the figure: 1, base; 2, support column; 3, top plate; 4, vertical plate; 5, first rotating shaft; 6, main shaft; 7, first gear; 8, worm; 9, worm wheel; 10, first connecting rod; 11, second connecting rod; 12, second rotating shaft; 13, third connecting rod; 14, spline shaft; 15, hexagonal hole; 16, second gear; 17, annular teeth; 18, hexagonal wrench; 19, connecting plate; 20, supporting plate; 21, shaped plate; 22, cylinder; 23, guide groove; 24, round shaft; 25, guide rod; 26, cylinder; 27, machine Manipulator parts; 28, spray pipe; 29, box body; 30, piston; 31, connecting rod; 32, one-way liquid inlet pipe; 33, one-way liquid outlet pipe; 34, inclined track; 35, cam; 36, wedge block; 37, rectangular hole; 38, T-shaped plate; 39, magnetic spring; 40, isolation plate; 41, reset spring; 42, lubrication box; 43, empty slot; 44, electric blocker; 45, folding rod; 46, column; 47, gear; 48, motor; 49, limit ring; 50, annular plate; 51, telescopic spring; 52, wedge hole. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] Reference Figure 1 - Fig. 9 , an automatic assembly device for a ball valve, comprising a base 1, a top plate 3 is fixedly mounted on the top wall of the base 1 through a plurality of support columns 2, a vertical plate 4 is symmetrically mounted on the bottom wall of the top plate 3, and a plurality of assembly mechanisms are arranged on the top plate 3; The assembly mechanism includes a first rotating shaft 5 and a second rotating shaft 12 rotatably connected to the side wall of the vertical plate 4, the side wall of the first rotating shaft 5 is fixedly connected to the first connecting rod 10, one end of the first connecting rod 10 is rotatably connected to the second connecting rod 11, the side wall of the second rotating shaft 12 is fixedly connected to the gear 47 and the third connecting rod 13 in sequence, the third connecting rod 13 and the second connecting rod 11 are rotatably connected, a spline shaft 14 is slidably connected through the top wall of the top plate 3, the spline portion of the spline shaft 14 is located at the shaft body keyed to the second gear 16, a plurality of annular teeth 17 are fixedly connected to the side wall of the spline shaft 14, a one-way bearing is fixedly connected to the bottom wall of the spline shaft 14, the spline shaft 14 and the inner ring portion of the one-way bearing are fixedly connected, the outer ring portion of the one-way bearing is fixedly connected to the hexagonal wrench 18, the one-way bearing is a prior art, and the one-way bearing is a bearing that can rotate freely in one direction and is locked in another direction. A hexagonal through hole is provided on the inner wall of the hexagonal wrench 18, and the hexagonal nut can be tightened when rotating. The bottom wall of the top plate 3 is rotatably connected to the second gear 16, and the spline shaft 14 is keyed to the second gear 16. The inner wall of the top plate 3 penetrates and is rotatably connected to the main shaft 6. The side wall of the main shaft 6 is fixed with the first gear 7 and the worm 8, and the side wall of the first rotating shaft 5 is fixed with the worm wheel 9; The side wall of the spline shaft 14 is provided with an assembly mechanism for assembling the opening and closing parts, the sealing ring and the valve stem.

[0021] The assembly mechanism includes a connecting plate 19 that passes through the side walls of two adjacent spline shafts 14. The two connecting plates 19 are fixedly connected by a support plate 20. A cylinder 26 is passed through the inner wall of the support plate 20. A manipulator component 27 is fixedly connected to the bottom wall of the cylinder 26. The manipulator component 27 is a prior art and will not be described in detail here. A C-shaped plate 21 is fixedly connected to the bottom wall of the top plate 3. A cylinder 22 is fixedly connected to the bottom wall of the C-shaped plate 21. A guide groove 23 is provided on the inner side wall of the cylinder 22. A round shaft 24 is provided on the top wall of the cylinder 26. A guide rod 25 is fixedly connected to the side wall of the round shaft 24. The guide rod 25 is slidably connected inside the guide groove 23.

[0022] The side wall of the cylinder 26 is fixedly connected to an annular plate 50, and the inner wall of the annular plate 50 is slidably connected to a plurality of telescopic springs 51, and the plurality of telescopic springs 51 are fixedly connected to the support plate 20. When different parts are subsequently assembled and extruded, the telescopic springs 51 can be squeezed to buffer the extrusion due to the inconsistent heights of the assembled parts inside the valve body. The guide groove 23 is composed of vertical grooves and spiral grooves connected in sequence. A spray pipe 28 is embedded in the inner wall of the manipulator component 27. The top wall of the U-shaped plate 21 is fixedly connected to the box body 29, and the piston 30 is sealed and slidably connected inside the box body 29. The top wall of the circular shaft 24 is rotatably connected to a connecting rod 31, and the end of the connecting rod 31 away from the circular shaft 24 penetrates the cylinder 22, the U-shaped plate 21 and the inner wall of the box body 29 and is fixedly connected to the piston 30. The side wall of the connecting rod 31 is fixedly connected to two limit rings 49, and the two limit rings 49 are respectively located on both sides of the piston 30.

[0023] A one-way liquid inlet pipe 32 and a one-way liquid outlet pipe 33 are fixedly connected through the inner wall of the box body 29, and the end of the one-way liquid outlet pipe 33 away from the box body 29 is fixedly connected to the spray pipe 28. A lubrication box 42 is fixedly connected to the top of the top plate 3, and the end of the one-way liquid inlet pipe 32 away from the box body 29 is fixedly connected to the lubrication box 42. The one-way liquid inlet pipe 32 only allows the lubricating oil inside the lubrication box 42 to enter the box body 29, and the one-way liquid outlet pipe 33 only allows the lubricating oil in the box body 29 to be squeezed into the spray pipe 28 for spraying.

[0024] The top plate 3 is provided with a plurality of feeding mechanisms for automatically unloading and assembling bolts, each feeding mechanism comprising an inclined track 34 fixedly connected to the top plate 3 via a column 46, the bottom wall of the inclined track 34 and the inner wall of the top plate 3 are penetrated by an isolation plate 40 which is slidably connected thereto, a wedge-shaped hole 52 is provided on the inner wall of the isolation plate 40, a return spring 41 is sleeved and fixed on the side wall of the isolation plate 40, and the other end of the return spring 41 is fixedly connected to the bottom wall of the inclined track 34.

[0025] A cam 35 is fixedly connected to the side wall of the main shaft 6, and a wedge block 36 is symmetrically slidably connected to the top wall of the top plate 3. A rectangular hole 37 is opened on the inner wall of the wedge block 36, and a T-shaped plate 38 is slidably connected to the inner wall of the rectangular hole 37. A magnetic spring 39 is fixedly connected to the side wall of the T-shaped plate 38. The magnetic spring 39 is a prior art. After the magnetic spring 39 is energized, due to electromagnetic induction, the magnetic spring 39 interacts with the current in the external magnetic field to generate different sizes of pulling force to control the tensile deformation and movement state of the magnetic spring 39, that is, the magnetic spring 39 can shrink a certain distance when energized, and the other end of the magnetic spring 39 is fixedly connected to the inner wall of the rectangular hole 37.

[0026] The wedge-shaped hole 52 and the wedge-shaped block 36 are slidably connected, and the cam 35 and the T-shaped plate 38 slide against each other.

[0027] A hexagonal hole 15 is formed on the top wall of the spline shaft 14, and an empty slot 43 is symmetrically formed on the inner wall of the hexagonal hole 15. An electric blocker 44 is installed on the inner wall of the empty slot 43. When the electric blocker 44 is energized, its built-in blocker block can be extended outward or retracted inward.

[0028] The gear 47 is meshed and connected with the adjacent plurality of annular teeth 17 , the worm wheel 9 is meshed and connected with the adjacent worm 8 , and the first gear 7 is meshed and connected with the second gear 16 .

[0029] A plurality of folding rods 45 are fixedly connected to the top wall of the top plate 3 , and a motor 48 is fixedly connected to the other end of each folding rod 45 . Each motor 48 is coaxially fixed with a main shaft 6 .

[0030] In the present invention, when assembling the ball valve, the user first transports the valve body to the base 1 through an external conveying device, and then turns on multiple motors 48. The output end of the motor 48 drives the main shaft 6 fixedly connected thereto to rotate, and the main shaft 6 drives the first gear 7 to rotate, and the first gear 7 drives the second gear 16 meshing with it to rotate. Since the second gear 16 and the spline shaft 14 are keyed, the second gear 16 will drive the spline shaft 14 to rotate synchronously, and the main shaft 6 will also drive the worm 8 to rotate, and the worm 8 will drive the worm wheel 9 meshing with it to rotate, and the worm wheel 9 drives the first rotating shaft 5 to rotate, and the first rotating shaft 5 drives the second connecting rod 11 to move through the first connecting rod 10, so that the second connecting rod 11 drives the third connecting rod 13 to rotate forward and backward in the vertical direction, then the third connecting rod 13 will drive the gear 47 to rotate forward and backward through the second rotating shaft 12, and since the gear 47 is meshed with multiple annular teeth 17, the gear 47 will drive the spline shaft 14 to reciprocate in the vertical direction through multiple annular teeth 17.

[0031] When multiple spline shafts 14 move downward synchronously, two adjacent spline shafts 14 will drive the connecting plates 19 to move synchronously, and the two connecting plates 19 will drive the supporting plates 20 to move synchronously, and the supporting plates 20 will drive the manipulator component 27 to move synchronously through the cylinder 26. When the manipulator component 27 is at the highest point of the stroke, the external feeding device is used to enable the manipulator component 27 to sequentially clamp the opening and closing parts (balls), sealing rings, valve covers, valve stems and other components, and then when the manipulator component 27 moves downward in the vertical direction, these components can be moved downward one by one into the valve body, and when the cylinder 26 moves downward, the cylinder 26 will drive the circular shaft 24 to move downward synchronously, so that the guide rod 25 fixedly connected to the side wall of the circular shaft 24 slides in the guide groove 23. Since the guide groove 23 is composed of vertical grooves and spiral grooves connected in sequence, the guide rod 25 will first bring The movable circular shaft 24, the cylinder 26 and the manipulator component 27 move downward in the vertical direction until the manipulator component 27 puts the parts into the valve body. At this time, the circular shaft 24 drives the connecting rod 31 to penetrate the inner wall of the piston 30 and slide downward in a sealed manner until the limit ring 49 located at the top of the connecting rod 31 and the top of the piston 30 are in contact. Then the limit ring 49 will drive the piston 30 to slide downward in a sealed manner synchronously. At this time, the guide rod 25 enters the spiral groove portion from the vertical groove portion of the guide groove 23. Then, under the action of the guide rod 25, the circular shaft 24 will drive the cylinder 26 to rotate, and the cylinder 26 will drive the manipulator component 27 to rotate. Then the manipulator component 27 can rotate synchronously during the downward process, and then the parts placed in the valve body are rotated and pushed into the assembly position, thereby improving the assembly efficiency of the parts and avoiding damage to the parts caused by the vertical downward push assembly.

[0032] When the limiting ring 49 on the upper side drives the piston 30 to move downward, the piston 30 will squeeze the lubricating oil inside the box body 29 into the spray pipe 28 through the one-way liquid outlet pipe 33, and then this part of the lubricating oil enters the interior of the valve body to provide lubrication protection between the valve body and the assembled parts.

[0033] A bolt is placed into the corresponding hexagonal hole 15 through the inclined track 34. After these parts are assembled one by one, the valve cover needs to be fixed to the valve body by bolts. At this time, the electric blocker 44 is energized. After energization, the electric blocker 44 can make the built-in blocking block extend or shrink outward, thereby playing a blocking role. After the electric blocker 44 is energized, the built-in blocking block of the electric blocker 44 shrinks, and then the bolt above the blocking block of the electric blocker 44 will fall into the hexagonal wrench 18, and then the built-in blocking block of the electric blocker 44 is extended to limit the bolt. At this time, the bottom of the bolt is in contact with the screw hole of the valve cover.

[0034] Then, when the first gear 7 drives the second gear 16 to rotate, and the gear 47 drives the spline shaft 14 to move in the vertical direction through multiple annular teeth 17, the spline shaft 14 will drive the bolt to move downward synchronously in the later stage of downward movement to ensure that the bolt can contact with the corresponding screw hole of the valve cover, and then the bolt and the screw hole of the valve cover are matched under the blocking action of the electric blocker 44, and the spline shaft 14 is still in continuous rotation. At this time, with the cooperation of the one-way bearing, the spline shaft 14 will rotate the bolt downward through the hexagonal wrench 18 to tighten it, so as to complete the bolt fixation of the valve cover and the valve body.

[0035] When the motor 48 drives the main shaft 6 to rotate, when it is necessary to add bolts to the hexagonal hole 15, the magnetic spring 39 is changed from the energized state to the de-energized state, and the magnetic spring 39 will stretch a certain distance, and the magnetic spring 39 will drive the T-shaped plate 38 to move a certain distance, so that the T-shaped plate 38 contacts the adjacent cam 35, and the cam 35 will push the T-shaped plate 38, the magnetic spring 39 and the wedge block 36 to slide back and forth for a certain distance during the rotation of the main shaft 6, and the wedge block 36 will drive the isolation plate 40 to move downward for a certain distance through the wedge hole 52, so that the bolts inside the inclined track 34 enter the hexagonal hole 15 for bolt addition.

[0036] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A ball valve automatic assembly device, comprising a base (1), characterized in that: A top plate (3) is fixedly mounted on the top wall of the base (1) via a plurality of support columns (2); vertical plates (4) are symmetrically mounted on the bottom wall of the top plate (3); and a plurality of assembly mechanisms are provided on the top plate (3); The assembly mechanism comprises a first rotating shaft (5) and a second rotating shaft (12) rotatably connected to the side wall of the vertical plate (4); the side wall of the first rotating shaft (5) is fixedly connected to a first connecting rod (10); one end of the first connecting rod (10) is rotatably connected to a second connecting rod (11); the side wall of the second rotating shaft (12) is fixedly connected to a gear (47) and a third connecting rod (13) in sequence; the third connecting rod (13) and the second connecting rod (11) are rotatably connected; the top wall of the top plate (3) is slidably connected to a spline shaft (14); The side wall of the spline shaft (14) is fixedly connected to a plurality of annular teeth (17), the bottom wall of the spline shaft (14) is fixedly connected to a hexagonal wrench (18) via a one-way bearing, the bottom wall of the top plate (3) is rotatably connected to a second gear (16), the spline shaft (14) and the second gear (16) are keyed, the inner wall of the top plate (3) is penetrated and rotatably connected to a main shaft (6), the side wall of the main shaft (6) is fixed to a first gear (7) and a worm (8), and the side wall of the first rotating shaft (5) is fixed to a worm wheel (9); The side wall of the spline shaft (14) is provided with an assembly mechanism for assembling the opening and closing member, the sealing ring and the valve stem.

2. The ball valve automatic assembly device according to claim 1, characterized in that: The assembly mechanism comprises a connecting plate (19) penetrating the side walls of two adjacent spline shafts (14), the two connecting plates (19) being fixedly connected via a support plate (20), a cylinder (26) penetrating the inner wall of the support plate (20), a manipulator component (27) being fixedly connected to the bottom wall of the cylinder (26), a U-shaped plate (21) being fixedly connected to the bottom wall of the top plate (3), a cylinder (22) being fixedly connected to the bottom wall of the U-shaped plate (21), a guide groove (23) being provided on the inner side wall of the cylinder (22), a circular shaft (24) being provided on the top wall of the cylinder (26), a guide rod (25) being fixedly connected to the side wall of the circular shaft (24), and the guide rod (25) being slidably connected inside the guide groove (23).

3. The ball valve automatic assembly device according to claim 2, characterized in that: The side wall of the cylinder (26) is fixedly connected to an annular plate (50), and the inner wall of the annular plate (50) is slidably connected to a plurality of telescopic springs (51), and the plurality of telescopic springs (51) are fixedly connected to the support plate (20). The guide groove (23) is composed of a vertical groove and a spiral groove connected in sequence. A spray pipe (28) is embedded in the inner wall of the manipulator component (27). The top wall of the U-shaped plate (21) is fixedly connected to the box body (29), and the inside of the box body (29) is sealed and slidably connected to the piston (30). The top wall of the circular shaft (24) is rotatably connected to a connecting rod (31), and the end of the connecting rod (31) away from the circular shaft (24) passes through the cylinder (22), the U-shaped plate (21) and the inner wall of the box body (29) and is fixedly connected to the piston (30). The side wall of the connecting rod (31) is fixedly connected to two limiting rings (49).

4. The ball valve automatic assembly device according to claim 3, characterized in that: A one-way liquid inlet pipe (32) and a one-way liquid outlet pipe (33) are fixedly connected through the inner wall of the box body (29), and the end of the one-way liquid outlet pipe (33) away from the box body (29) is fixedly connected to the spray pipe (28). A lubrication box (42) is fixedly connected to the top of the top plate (3), and the end of the one-way liquid inlet pipe (32) away from the box body (29) is fixedly connected to the lubrication box (42).

5. The ball valve automatic assembly device according to claim 1, characterized in that: The top plate (3) is provided with a plurality of feeding mechanisms for automatically cutting and assembling bolts, each feeding mechanism comprising an inclined track (34) fixedly connected to the top plate (3) via a column (46), an isolation plate (40) is slidably connected through the bottom wall of the inclined track (34) and the inner wall of the top plate (3), a wedge-shaped hole (52) is provided on the inner wall of the isolation plate (40), a return spring (41) is fixedly sleeved on the side wall of the isolation plate (40), and the other end of the return spring (41) is fixedly connected to the bottom wall of the inclined track (34).

6. The ball valve automatic assembly device according to claim 5, characterized in that: The side wall of the main shaft (6) is fixedly connected to a cam (35), the top wall of the top plate (3) is symmetrically slidably connected to a wedge block (36), the inner wall of the wedge block (36) is provided with a rectangular hole (37), the inner wall of the rectangular hole (37) is penetrated by a T-shaped plate (38) which is slidably connected, the side wall of the T-shaped plate (38) is fixedly connected to a magnetic spring (39), and the other end of the magnetic spring (39) is fixedly connected to the inner wall of the rectangular hole (37).

7. The ball valve automatic assembly device according to claim 6, characterized in that: The wedge-shaped hole (52) and the wedge-shaped block (36) are slidably connected, and the cam (35) and the T-shaped plate (38) slide against each other.

8. The ball valve automatic assembly device according to claim 1, characterized in that: A hexagonal hole (15) is formed on the top wall of the spline shaft (14), and an empty slot (43) is symmetrically formed on the inner wall of the hexagonal hole (15). An electric blocker (44) is installed on the inner wall of the empty slot (43).

9. The ball valve automatic assembly device according to claim 1, characterized in that: The gear (47) is meshedly connected to a plurality of adjacent annular teeth (17), the worm wheel (9) is meshedly connected to an adjacent worm (8), and the first gear (7) is meshedly connected to the second gear (16).

10. The ball valve automatic assembly device according to claim 1, characterized in that: A plurality of folding rods (45) are fixedly connected to the top wall of the top plate (3), the other end of each folding rod (45) is fixedly connected to a motor (48), and each motor (48) is coaxially fixed with a main shaft (6).

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