An automatic assembly device for large ball valves

Abstract

The present invention discloses an automatic assembly device for a large ball valve, which relates to the field of ball valve processing and includes a workbench. An assembly table is arranged on one side of the workbench, and a feeding structure is arranged on the top of the workbench. A support plate is arranged at the top of the assembly table. By setting a fixed plate, a movable plate, a clamping plate and a clamping frame, the electric push rod controls the clamping plate inside the fixed plate and the movable plate, and the clamping frame to fit with the outer wall of the main valve body, so that the main valve body is fixed under the clamping of the two clamping frames. Moreover, the second motor can be controlled to drive the clamping plate and the clamping frame at the output end to rotate. Since the two clamping frames are engaged with the outside of the main valve body, the two clamping plates and the clamping frames drive the main valve body to rotate through bearings, adjusting the direction of the ball valve. Also, the first motor can be controlled to drive the rotating plate at the output end to rotate, thereby driving the fixed plate, the movable plate and the main valve body to rotate, adjusting the angle of the valve body, which is convenient for better assembly of the valve body at different angles and directions.

Description

Technical Field

[0001] The present invention relates to the field of ball valve processing, and specifically to an automatic assembly device for large ball valves. Background Art

[0002] A ball valve is a valve whose closing member is driven by a valve stem and rotates around the axis of the ball valve. It can also be used for fluid regulation and control. Among them, the hard-sealed V-type ball valve has a strong shearing force between its V-type ball core and the metal valve seat with surfacing hard alloy, and is especially suitable for media containing fibers, tiny solid particles, etc.

[0003] Currently, ball valves are assembled manually by workers. Even if there are assembly devices, the degree of automation of the devices is low, the assembly efficiency is low, and when clamping the ball valve, changing the angle requires manual operation by workers, which affects the continuous processing of the ball valve. Therefore, there is an urgent need for an automatic assembly device for large ball valves. Summary of the Invention

[0004] The purpose of the present invention is to solve the problems that currently ball valves are assembled manually by workers. Even if there are assembly devices, the degree of automation of the devices is low, the assembly efficiency is low, and when clamping the ball valve, changing the angle requires manual operation by workers, which affects the continuous processing of the ball valve; the number of components for ball valve assembly is large, and feeding them one by one affects the assembly efficiency; and when assembling two valve bodies, there is no limiting structure, which easily causes the flanges of the two valve bodies to be misaligned. The present invention provides an automatic assembly device for large ball valves.

[0005] To achieve the above purpose, the present invention provides the following technical solution: An automatic assembly device for large ball valves, including a workbench. One side of the workbench is provided with an assembly table, and a feeding structure is arranged on the top of the workbench. A support plate is arranged at the top end of the assembly table. A first hydraulic push rod is installed inside the support plate, and a positioning structure is arranged on the workbench. The output end of the first hydraulic push rod is provided with a clamping structure. A second conveyor belt is installed inside the workbench, and a feeding robotic arm is installed at the top end of the workbench. A third conveyor belt is installed at the front end of the second conveyor belt. A screwing robotic arm is installed at the front end of the feeding robotic arm. Pneumatic grippers are installed at the front ends of the feeding robotic arm and the third conveyor belt. A first conveyor belt is installed inside the assembly table, and a fourth conveyor belt is installed at the rear end of the first conveyor belt.

[0006] The clamping structure includes a movable seat. A first motor is installed inside the movable seat. The output end of the first motor is provided with a rotating plate. A fixing plate is fixed at the bottom end of the rotating plate. An electric push rod is installed inside the rotating plate. The output end of the electric push rod is provided with a movable plate. A second motor is installed inside the movable plate. The output end of the second motor is provided with a clamping plate. A clamping frame is arranged inside the clamping plate.

[0007] The feeding structure includes a feed bin. A clamping groove is formed inside the feed bin, and a discharge groove is formed on the outer wall of the feed bin. A ball plate is installed at the bottom end of the inner wall of the feed bin, and a push plate is arranged on one side of the feed bin. A partition plate is clamped inside the clamping groove, and an adjusting plate is arranged inside the discharge groove. A moving rod is arranged at the top end of the push plate, and a second hydraulic push rod is installed on one side of the moving rod. The feed bin and the workbench are fixedly installed through a support seat. The number of the clamping grooves is multiple. The partition plate and the feed bin are fixedly clamped through the clamping grooves. A positioning groove is formed at the top end of the discharge groove, and the adjusting plate and the discharge groove are fixedly connected through the positioning groove and bolts.

[0008] The positioning structure includes a limit box. A third motor is installed inside the limit box. A lead screw is arranged at the output end of the third motor. A threaded sleeve is movably arranged on the outer side of the lead screw. A support frame is connected to the bottom end of the threaded sleeve. A moving block is fixed at the end of the support frame. A cylinder is installed inside the moving block. A support rod is arranged at the output end of the cylinder. A clamping sleeve is arranged on the inner wall of the support rod. The limit box and the support plate are fixedly installed. The third motor and the limit box are fixedly installed through an installation groove. The left side of the lead screw is rotatably connected to the limit box through a bearing, and the threaded sleeve and the lead screw are movably connected through threads.

[0009] Preferably, the assembly table and the workbench are fixedly installed through a bracket. The number of the first hydraulic push rods is two, and the first hydraulic push rods and the support plate are fixedly installed through installation grooves. The second conveyor belt and the third conveyor belt are fixedly installed on the workbench through bolts. The first conveyor belt and the fourth conveyor belt are fixedly installed on the assembly table through bolts.

[0010] Preferably, the movable seat is fixedly connected to the output end of the first hydraulic push rod, and the first motor and the movable seat are fixedly installed through an installation groove. An activity groove matching the movable plate is formed inside the rotating plate.

[0011] Preferably, the electric push rod and the rotating plate are fixedly installed through an installation groove. The number of the clamping plates is two. One clamping plate is rotatably connected to the fixed plate through a bearing, and the other clamping plate is movably connected to the movable plate through a second motor and a rotating shaft. A friction pad is arranged at the end of the clamping frame.

[0012] Preferably, the push plate and the moving rod are fixedly installed through bolts, and a through groove matching the push plate is formed on one side of the feed bin. The second hydraulic push rod and the workbench are fixedly installed through an equipment seat.

[0013] Preferably, the moving block and the support plate are movably connected through the threaded sleeve and the support frame. The cylinder and the moving block are fixedly installed through a back plate. The number of the cylinders, the support rods and the clamping sleeves is two.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0015] First, by setting a fixed plate, a movable plate, a clamping plate and a clamping frame, the electric push rod controls the clamping plate inside the fixed plate and the movable plate, and the clamping frame fits with the outer wall of the main valve body, so that the main valve body is fixed under the clamping of the two clamping frames. Moreover, the second motor can be controlled to drive the clamping plate and the clamping frame at the output end to rotate. Since the two clamping frames are engaged with the outside of the main valve body, the two clamping plates and the clamping frame drive the main valve body to rotate through the bearing, adjusting the direction of the ball valve. And the first motor can be controlled to drive the rotating plate at the output end to rotate, and then drive the fixed plate, the movable plate and the main valve body to rotate, adjusting the angle of the valve body, which is convenient for the valve body to be better assembled at different angles and directions.

[0016] Second, by setting a material box, a discharge chute, a partition plate, a push plate and a second hydraulic push rod, the position of the partition plate is adjusted in advance, the height of the adjusting plate in the discharge chute is adjusted, and the position of the push plate is adjusted. After the adjustment, the second hydraulic push rod can be controlled to operate. The internal technology of the second hydraulic push rod is the prior art. After the second hydraulic push rod operates, it drives the moving rod at the output end and multiple push plates to move at the bottom of the material box. When moving, it pushes the parts to roll to one side on the ball plate, and under the thrust, they are moved out through the discharge chute and slowly fall onto the second conveyor belt, so that multiple parts fall onto the second conveyor belt at the same time and can be conveyed to one side of the feeding robotic arm at the same time, which is convenient for the feeding robotic arm to grab through the pneumatic gripper.

[0017] Third, by setting a third motor, a lead screw, a support frame, a moving block, a cylinder, a support rod and a clamping sleeve, the third motor inside the limit box is controlled to operate, driving the lead screw at the output end to rotate. When the lead screw rotates, it drives the support frame and the moving block to move to one side through the thread sleeve, so that the two support rods inside the moving block move to both sides of the valve body flange. At this time, the two cylinders inside the moving block are controlled to operate. After the cylinders operate, they drive the support rods at the output end to move inward. When the support rods move inward, the clamping sleeves inside them are clamped to the outside of the two flanges. After the two flanges are clamped and limited by the clamping sleeves on both sides, they are passively aligned. Thus, the main valve body and the sub-valve body are aligned. After alignment, the screwing robotic arm grabs bolts and nuts to fixedly connect the two flanges, so that the main valve body and the sub-valve body are fixedly connected, and the assembly of the ball valve is completed. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is the schematic diagram of the overall structure of the present invention;

[0019] Figure 2 is the schematic top view structure of the present invention;

[0020] Figure 3 is the schematic diagram of the assembly table structure of the present invention;

[0021] Figure 4 Schematic diagram of the clamping structure of the present invention;

[0022] Figure 5 Schematic diagram of the clamping frame of the present invention;

[0023] Figure 6 Schematic diagram of the partition plate of the present invention;

[0024] Figure 7 Schematic diagram of the feeding structure of the present invention;

[0025] Figure 8 Schematic diagram of the discharge chute of the present invention;

[0026] Figure 9 Schematic diagram of the support frame of the present invention;

[0027] Figure 10 Schematic diagram of the positioning structure of the present invention;

[0028] Figure 11 Schematic diagram of the engaging sleeve of the present invention.

[0029] In the figure: 1, workbench; 2, assembly table; 3, first conveyor belt; 4, support plate; 5, first hydraulic push rod; 6, clamping structure; 601, movable seat; 602, first motor; 603, rotating plate; 604, fixed plate; 605, movable plate; 606, electric push rod; 607, clamping plate; 608, second motor; 609, clamping frame; 7, feeding structure; 701, material box; 702, engaging groove; 703, partition plate; 704, discharge chute; 705, adjusting plate; 706, ball plate; 707, push plate; 708, moving rod; 709, second hydraulic push rod; 8, second conveyor belt; 9, feeding robotic arm; 10, positioning structure; 1001, limiting box; 1002, third motor; 1003, lead screw; 1004, threaded sleeve; 1005, support frame; 1006, moving block; 1007, cylinder; 1008, support rod; 1009, engaging sleeve; 11, third conveyor belt; 12, screwing robotic arm; 13, pneumatic gripper; 14, fourth conveyor belt. Detailed implementation manners

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0031] Please refer to Figures 1-5, A large-scale ball valve automatic assembly device, including a workbench 1. There is an assembly table 2 on one side of the workbench 1, and a feeding structure 7 is arranged on the top of the workbench 1. A support plate 4 is arranged at the top of the assembly table 2. A first hydraulic push rod 5 is installed inside the support plate 4, and a positioning structure 10 is arranged on the workbench 1. The output end of the first hydraulic push rod 5 is provided with a clamping structure 6. A second conveyor belt 8 is installed inside the workbench 1, and a feeding robotic arm 9 is installed at the top of the workbench 1. A third conveyor belt 11 is installed at the front end of the second conveyor belt 8, and a screwing robotic arm 12 is installed at the front end of the feeding robotic arm 9. Pneumatic grippers 13 are installed at the ends of the feeding robotic arm 9 and the third conveyor belt 11. A first conveyor belt 3 is installed inside the assembly table 2, and a fourth conveyor belt 14 is installed at the rear end of the first conveyor belt 3. The clamping structure 6 includes a movable seat 601. A first motor 602 is installed inside the movable seat 601. The output end of the first motor 602 is provided with a rotating plate 603. A fixed plate 604 is fixed at the bottom end of the rotating plate 603. An electric push rod 606 is installed inside the rotating plate 603. The output end of the electric push rod 606 is provided with a movable plate 605. A second motor 608 is installed inside the movable plate 605. The output end of the second motor 608 is provided with a clamping plate 607. A clamping frame 609 is arranged inside the clamping plate 607. The assembly table 2 and the workbench 1 are fixedly installed through brackets. The number of the first hydraulic push rods 5 is two, and the first hydraulic push rods 5 and the support plate 4 are fixedly installed through installation grooves. The second conveyor belt 8, the third conveyor belt 11 and the workbench 1 are fixedly installed through bolts. The first conveyor belt 3, the fourth conveyor belt 14 and the assembly table 2 are fixedly installed through bolts. The movable seat 601 is fixedly connected to the output end of the first hydraulic push rod 5, and the first motor 602 and the movable seat 601 are fixedly installed through installation grooves. An activity groove matching the movable plate 605 is opened inside the rotating plate 603. The electric push rod 606 and the rotating plate 603 are fixedly installed through installation grooves. The number of the clamping plates 607 is two. One clamping plate 607 is movably connected to the fixed plate 604 through a bearing, and the other clamping plate 607 is movably connected to the movable plate 605 through the second motor 608 and a rotating shaft. A friction pad is arranged at the end of the clamping frame 609. The main valve body of the ball valve is conveyed to the fourth conveyor belt 14 through the first conveyor belt 3. At this time, the two first hydraulic push rods 5 operate. The technology inside the first hydraulic push rod 5 is the existing technology. After the first hydraulic push rod 5 operates, it drives the movable seat 601 at the output end to move downward. When the movable seat 601 moves downward, it drives the lower rotating plate 603, fixed plate 604 and movable plate 605 to move downward, so that the fixed plate 604 and the movable plate 605 move downward to both sides of the main valve body. At this time, control the electric push rod 606 to operate. The technology inside the electric push rod 606 is the existing technology. After the electric push rod 606 operates, it drives the movable plate 605 to move. After the movable plate 605 moves, the clamping plate 607 and the clamping frame 609 inside it are attached to the outer wall of the main valve body, and the movable plate 605 continues to move, and the main valve body is pushed by the clamping plate 607 to move towards the fixed plate 604.Finally, the main valve body is fixed under the clamping of the two clamping plates 607 and the clamping frame 609, which is convenient for the assembly of the ball valve. When the angle of the main valve body needs to be adjusted, the first hydraulic push rod 5 drives the movable seat 601 to move upward, so that the fixed plate 604 and the movable plate 605 move upward, and then the main valve body is driven to move upward. At this time, the second motor 608 is controlled to operate. The internal technology of the second motor 608 is the existing technology. After the second motor 608 operates, it drives the clamping plates 607 and the clamping frame 609 at the output end to rotate. Since the two clamping frames 609 are engaged with the outside of the main valve body, the two clamping plates 607 and the clamping frame 609 drive the main valve body to rotate through the bearing, adjusting the direction of the ball valve. And the first motor 602 can be controlled to operate. The internal technology of the first motor 602 is the existing technology. After the first motor 602 operates, it drives the rotating plate 603 at the output end to rotate, and then drives the fixed plate 604, the movable plate 605 and the main valve body to rotate, adjusting the angle of the valve body, which is convenient for the valve body to be assembled better at different angles and directions.,

[0032] Please refer to Figures 6-8, a large-sized ball valve automatic assembly device, wherein the feeding structure 7 includes a material box 701. A clamping groove 702 is formed inside the material box 701, and a discharge groove 704 is formed on the outer wall of the material box 701. A ball plate 706 is installed at the bottom end of the inner wall of the material box 701, and a push plate 707 is arranged on one side of the material box 701. A partition plate 703 is clamped inside the clamping groove 702, and an adjusting plate 705 is arranged inside the discharge groove 704. A moving rod 708 is arranged at the top end of the push plate 707, and a second hydraulic push rod 709 is installed on one side of the moving rod 708. The material box 701 and the workbench 1 are fixedly installed through a support seat. The number of clamping grooves 702 is multiple. The partition plate 703 and the material box 701 are fixedly clamped through the clamping groove 702. A positioning groove is formed at the top end of the discharge groove 704, and the adjusting plate 705 and the discharge groove 704 are fixedly connected through the positioning groove and bolts. The push plate 707 and the moving rod 708 are fixedly installed through bolts, and a through groove matching the push plate 707 is formed on one side of the material box 701. The second hydraulic push rod 709 and the workbench 1 are fixedly installed through an equipment seat. In advance, according to the sizes of valve seat gaskets, left valve seats, right valve seats, ball cores, etc., the position of the partition plate 703 is adjusted. After the partition plate 703 is fixed inside the material box 701 through the clamping groove 702, the separated space is used for stacking parts such as valve seat gaskets. And according to the height of parts such as valve seat gaskets, the height of the adjusting plate 705 in the discharge groove 704 is adjusted. After adjustment, the adjusting plate 705 is fixed in the positioning groove through bolts, and the size of the discharge groove 704 formed after adjustment is used for the discharge of parts. At the same time, according to the size of the parts, the position of the push plate 707 is adjusted. After adjustment, it is fixed at the bottom end of the moving rod 708 through bolts, so that the push plate 707 can be aligned with the position of the parts. Then, after the main valve body is fixed, the second hydraulic push rod 709 can be controlled to operate. The internal technology of the second hydraulic push rod 709 is the existing technology. After the second hydraulic push rod 709 operates, it drives the moving rod 708 at the output end and multiple push plates 707 to move at the bottom end of the material box 701. During the movement, the parts are pushed to roll to one side on the ball plate 706 and are moved out through the discharge groove 704 under the thrust, and slowly fall onto the second conveyor belt 8. Then, multiple parts fall onto the second conveyor belt 8 at the same time and can be conveyed to one side of the feeding robotic arm 9 at the same time, which is convenient for the feeding robotic arm 9 to grab through the pneumatic gripper 13.

[0033] Please refer to Figures 9-11, a large-sized ball valve automatic assembly device, wherein the positioning structure 10 includes a limit box 1001. A third motor 1002 is installed inside the limit box 1001. A lead screw 1003 is provided at the output end of the third motor 1002. A thread sleeve 1004 is movably arranged outside the lead screw 1003. The bottom end of the thread sleeve 1004 is connected to a support frame 1005. A moving block 1006 is fixed at the end of the support frame 1005. A cylinder 1007 is installed inside the moving block 1006. A support rod 1008 is provided at the output end of the cylinder 1007. A clamping sleeve 1009 is arranged on the inner wall of the support rod 1008. The limit box 1001 is fixedly installed with the support plate 4. The third motor 1002 is fixed to the limit box 1001 through an installation groove. The left side of the lead screw 1003 is rotatably connected to the limit box 1001 through a bearing, and the thread sleeve 1004 is movably connected to the lead screw 1003 through a thread. The moving block 1006 is movably connected to the support plate 4 through the thread sleeve 1004 and the support frame 1005. The cylinder 1007 is fixedly installed with the moving block 1006 through a back plate. The number of the cylinders 1007, the support rods 1008 and the clamping sleeves 1009 is two. Control the operation of the third motor 1002 inside the limit box 1001. The technology inside the third motor 1002 is prior art. After the third motor 1002 operates, it drives the lead screw 1003 at the output end to rotate. When the lead screw 1003 rotates, it drives the support frame 1005 and the moving block 1006 to move to one side through the thread sleeve 1004, so that the two support rods 1008 inside the moving block 1006 move to both sides of the valve body flange. At this time, control the operation of the two cylinders 1007 inside the moving block 1006. After the cylinders 1007 operate, they drive the support rods 1008 at the output end to move inwards. When the support rods 1008 move inwards, the clamping sleeves 1009 on their inner sides are clamped to the outside of the two flanges. After the two flanges are clamped and limited by the clamping sleeves 1009 on both sides, they are passively aligned, so that the main valve body and the sub-valve body are aligned. After alignment, rotate the robotic arm 12 to grab bolts and nuts to fixedly connect the two flanges, so that the main valve body and the sub-valve body are fixedly connected, and then the ball valve assembly is completed.

[0034] Working principle: When the present invention is in use, the main valve body of the ball valve is conveyed onto the fourth conveyor belt 14 through the first conveyor belt 3. At this time, two first hydraulic push rods 5 operate. The internal technology of the first hydraulic push rod 5 is prior art. After the first hydraulic push rod 5 operates, it drives the movable seat 601 at the output end to move downward. When the movable seat 601 moves downward, it drives the rotating plate 603, the fixed plate 604 and the movable plate 605 below to move downward, so that the fixed plate 604 and the movable plate 605 move to both sides of the main valve body. At this time, control the electric push rod 606 to operate. The internal technology of the electric push rod 606 is prior art. After the electric push rod 606 operates, it drives the movable plate 605 to move. After the movable plate 605 moves, the clamping plate 607 and the clamping bracket 609 inside it are attached to the outer wall of the main valve body. And the movable plate 605 continues to move, and the main valve body is pushed by the clamping plate 607 to move towards the fixed plate 604. Finally, the main valve body is fixed under the clamping of the two clamping plates 607 and the clamping bracket 609, which is convenient for the assembly of the ball valve. And when the angle of the main valve body needs to be adjusted, the first hydraulic push rod 5 drives the movable seat 601 to move upward, so that the fixed plate 604 and the movable plate 605 move upward, and the main valve body is driven to move upward. At this time, control the second motor 608 to operate. The internal technology of the second motor 608 is prior art. After the second motor 608 operates, it drives the clamping plate 607 and the clamping bracket 609 at the output end to rotate. Since the two clamping brackets 609 are engaged with the outside of the main valve body, the two clamping plates 607 and the clamping bracket 609 drive the main valve body to rotate through the bearing, adjusting the direction of the ball valve. And the first motor 602 can be controlled to operate. The internal technology of the first motor 602 is prior art. After the first motor 602 operates, it drives the rotating plate 603 at the output end to rotate, and then drives the fixed plate 604, the movable plate 605 and the main valve body to rotate, adjusting the angle of the valve body, which is convenient for the valve body to be assembled better at different angles and directions. And in advance, according to the sizes of the valve seat gasket, the left valve seat, the right valve seat, the ball core, etc., adjust the position of the partition plate 703. After the partition plate 703 is fixed inside the material box 701 through the engaging groove 702, the separated space is used to stack parts such as the valve seat gasket. And according to the height of parts such as the valve seat gasket, select an adjusting plate 705 with an appropriate width, and then adjust the height of the adjusting plate 705 in the discharge chute 704. After adjustment, fix the adjusting plate 705 in the positioning groove through bolts. And the size of the discharge chute 704 formed after adjustment is used for the discharge of parts. At the same time, according to the size of the parts, adjust the position of the push plate 707. After adjustment, fix it at the bottom end of the moving rod 708 through bolts, so that the push plate 707 can be aligned with the position of the parts. After the main valve body is fixed, control the second hydraulic push rod 709 to operate. The internal technology of the second hydraulic push rod 709 is prior art. After the second hydraulic push rod 709 operates, it drives the moving rod 708 at the output end and multiple push plates 707 to move at the bottom end of the material box 701. When moving, it pushes the parts to roll to one side on the ball plate 706, and under the thrust, they are discharged through the discharge chute 704 and slowly fall onto the second conveyor belt 8.Then, multiple components fall onto the second conveyor belt 8 simultaneously and can be conveyed to one side of the feeding robotic arm 9 at the same time, facilitating the feeding robotic arm 9 to grasp them through the pneumatic gripper 13. After grasping, the components are sent into the interior of the main valve body for assembly. After the assembly is completed, the main valve body is vertically fixed, and the sub-valve body is conveyed through the third conveyor belt 11. After the feeding robotic arm 9 grasps the sub-valve body, it is conveyed to the top of the main valve body to make the flanges on the main valve body and the sub-valve body fit. At this time, the third motor 1002 is controlled to operate. The internal technology of the third motor 1002 is the prior art. After the third motor 1002 operates, it drives the output end lead screw 1003 to rotate. When the lead screw 1003 rotates, it drives the support frame 1005 and the moving block 1006 to move to one side through the threaded sleeve 1004, so that the two support rods 1008 inside the moving block 1006 move to both sides of the valve body flange. At this time, the two cylinders 1007 inside the moving block 1006 are controlled to operate. After the cylinders 1007 operate, they drive the output end support rods 1008 to move inward. Then, when the support rods 1008 move inward, the engaging sleeves 1009 inside them are engaged with the outer sides of the two flanges. After the two flanges are clamped and limited by the engaging sleeves 1009 on both sides, they are passively aligned, so that the main valve body and the sub-valve body are aligned. After alignment, the screwing robotic arm 12 grasps bolts and nuts to fixedly connect the two flanges, so that the main valve body and the sub-valve body are fixedly connected, and the ball valve assembly is completed. The assembled ball valve is conveyed through the fourth conveyor belt 14.,

[0035] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended to embrace all changes falling within the meaning and scope of the equivalent elements of the claims in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights involved.

Claims

1. An automatic assembly device for a large ball valve, comprising a workbench (1), characterized in that: On one side of the workbench (1), an assembly table (2) is provided, and a feeding structure (7) is arranged on the top of the workbench (1). A support plate (4) is arranged at the top end of the assembly table (2). A first hydraulic push rod (5) is installed inside the support plate (4). A positioning structure (10) is arranged on the workbench (1). The output end of the first hydraulic push rod (5) is provided with a clamping structure (6). A second conveyor belt (8) is installed inside the workbench (1), and a feeding robotic arm (9) is installed at the top end of the workbench (1). A third conveyor belt (11) is installed at the front end of the second conveyor belt (8). A screwing robotic arm (12) is installed at the front end of the feeding robotic arm (9). Pneumatic grippers (13) are installed at the front ends of the feeding robotic arm (9) and the third conveyor belt (11). A first conveyor belt (3) is installed inside the assembly table (2), and a fourth conveyor belt (14) is installed at the rear end of the first conveyor belt (3); The clamping structure (6) includes a movable seat (601). A first motor (602) is installed inside the movable seat (601). The output end of the first motor (602) is provided with a rotating plate (603). A fixed plate (604) is fixed at the bottom end of the rotating plate (603). An electric push rod (606) is installed inside the rotating plate (603). The output end of the electric push rod (606) is provided with a movable plate (605). A second motor (608) is installed inside the movable plate (605). The output end of the second motor (608) is provided with a clamping plate (607). A clamping frame (609) is arranged inside the clamping plate (607); The feeding structure (7) includes a material box (701). A clamping groove (702) is formed inside the material box (701), and a discharge groove (704) is formed in the outer wall of the material box (701). A ball plate (706) is installed at the bottom end of the inner wall of the material box (701). A push plate (707) is arranged on one side of the material box (701). A partition plate (703) is clamped inside the clamping groove (702). An adjusting plate (705) is arranged inside the discharge groove (704). A moving rod (708) is arranged at the top end of the push plate (707). A second hydraulic push rod (709) is installed on one side of the moving rod (708). The material box (701) and the workbench (1) are fixedly installed through a support seat. The number of the clamping grooves (702) is multiple. The partition plate (703) and the material box (701) are clamped and fixed through the clamping grooves (702). A positioning groove is formed at the top end of the discharge groove (704), and the adjusting plate (705) and the discharge groove (704) are fixedly connected through the positioning groove and bolts; The positioning structure (10) includes a limit box (1001). A third motor (1002) is installed inside the limit box (1001). A lead screw (1003) is provided at the output end of the third motor (1002). A threaded sleeve (1004) is movably arranged outside the lead screw (1003). The bottom end of the threaded sleeve (1004) is connected to a support frame (1005). A moving block (1006) is fixed at the end of the support frame (1005). A cylinder (1007) is installed inside the moving block (1006). A support rod (1008) is provided at the output end of the cylinder (1007). A clamping sleeve (1009) is arranged on the inner wall of the support rod (1008). The limit box (1001) is fixedly installed with the support plate (4). The third motor (1002) is fixed to the limit box (1001) through an installation groove. The left side of the lead screw (1003) is rotatably connected to the limit box (1001) through a bearing, and the threaded sleeve (1004) is movably connected to the lead screw (1003) through a thread.

2. The automatic assembly equipment for a large ball valve according to claim 1, wherein: The assembly table (2) is fixedly installed with the workbench (1) through a bracket. The number of the first hydraulic push rods (5) is two, and the first hydraulic push rods (5) are fixed to the support plate (4) through an installation groove. The second conveyor belt (8) and the third conveyor belt (11) are fixedly installed with the workbench (1) through bolts. The first conveyor belt (3) and the fourth conveyor belt (14) are fixedly installed with the assembly table (2) through bolts.

3. The automatic assembly equipment for a large ball valve according to claim 1, wherein: The movable seat (601) is fixedly connected to the output end of the first hydraulic push rod (5), and the first motor (602) is fixed to the movable seat (601) through an installation groove. An activity groove matching the movable plate (605) is formed inside the rotating plate (603).

4. The automatic assembly equipment for a large ball valve according to claim 1, wherein: The electric push rod (606) is fixed to the rotating plate (603) through an installation groove. The number of the clamping plates (607) is two. One clamping plate (607) is rotatably connected to the fixed plate (604) through a bearing, and the other clamping plate (607) is connected to the movable plate (605) through a second motor (608) and a rotating shaft. A friction pad is arranged at the end of the clamping frame (609).

5. The automatic assembly equipment for a large ball valve according to claim 1, wherein: The push plate (707) is fixedly installed with the moving rod (708) through a bolt, and a through groove matching the push plate (707) is formed on one side of the material box (701). The second hydraulic push rod (709) is fixedly installed with the workbench (1) through an equipment seat.

6. The automatic assembly equipment for a large ball valve according to claim 1, wherein: The moving block (1006) is movably connected to the support plate (4) through the threaded sleeve (1004) and the support frame (1005). The cylinder (1007) is fixedly installed with the moving block (1006) through a back plate. The number of the cylinders (1007), the support rods (1008) and the clamping sleeves (1009) is two.

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