Valve plate and bonnet assembling machine

Abstract

The utility model discloses a valve plate bonnet assembling machine which comprises a machine frame, fixing seats, a machining shell and a pressing rod, a machining table is connected in the machine frame, the center of the top of the machining table is rotationally connected with a rotating table through a bearing, the number of the fixing seats is multiple, and the multiple fixing seats are annularly arranged on the rotating table. The machining shell is arranged in the rack, a first motor is arranged in the machining shell, an output shaft of the first motor rotationally penetrates through the machining shell and then is connected with the linear screwing rod, the pressing rod is arranged in the rack, a first air cylinder is installed in the rack through an installation frame, a piston rod of the first air cylinder is connected with a moving plate, and the machining shell is connected to the bottom of the moving plate. Through automatic operation, the time of screw joint of the nut and the valve bonnet and press fit of the anti-falling clamping ring is greatly shortened, the first motor is used for driving the linear screwing rod to screw the nut, the second motor is matched to drive the rotating table to rotate, multi-station continuous operation is achieved, the production efficiency is greatly improved, and the large-scale production requirement is met.

Description

Technical Field

[0001] This utility model belongs to the field of valve plate and valve cap assembly technology, and specifically relates to a valve plate and valve cap assembly machine. Background Technology

[0002] In modern industry, valves are the core components of fluid control systems. Their performance and quality play a decisive role in the safe and stable operation of the entire system. As key components of valves, the assembly quality of valve plates and valve caps directly affects the valve's sealing performance, opening and closing flexibility, and service life.

[0003] Currently, before assembling the valve plate and valve cap, to ensure the stability of the valve cap connection, the nut needs to be screwed to the valve cap and further reinforced by pressing an anti-loosening pressure ring. However, these operations are mostly done manually. Manual operation is not only inefficient and difficult to meet the needs of large-scale production, but also the assembly quality is greatly affected by human factors such as the worker's skill level and working condition. This, in turn, affects the subsequent assembly quality of the valve plate and valve cap, leading to valve failures such as poor sealing and leakage, and reducing the product qualification rate. Utility Model Content

[0004] The purpose of this utility model is to provide a valve plate and valve cap assembly machine to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a valve plate and valve cap assembly machine, comprising:

[0006] A frame, wherein a processing table is connected inside the frame and a rotary table is rotatably connected to the top center of the processing table via a bearing;

[0007] A fixed base, wherein the fixed base is provided in several groups and the several groups of fixed bases are arranged in a ring on the rotating platform;

[0008] The processing housing is located inside the frame and a first motor is installed inside the processing housing. The output shaft of the first motor rotates through the processing housing and is connected to a straight screw rod.

[0009] A pressing rod, located inside the frame, is used to press a retaining ring to prevent it from falling off at the threaded connection of the nut and the valve cap.

[0010] Preferably, a first cylinder is mounted inside the frame via a mounting bracket, the piston rod of the first cylinder is connected to a movable plate, and the processing shell is connected to the bottom of the movable plate.

[0011] Preferably, the movable plate is provided with a second cylinder and the piston rod of the second cylinder is connected to the pressing rod. Guide rods are connected inside the frame and on both sides of the processing shell. The two ends of the movable plate are slidably sleeved on the guide rods.

[0012] Preferably, the fixing seat has two sets of internal hexagonal fixing grooves for placing the valve cap, the valve cap has a groove and the inner wall of the groove has a first internal thread, the groove is connected to a threaded rod, the external thread on the surface of the nut is threadedly connected to the first internal thread in the groove of the valve cap, and the second internal thread in the nut is threadedly connected to the threaded rod.

[0013] Preferably, the nut has a slotted groove at the top.

[0014] Preferably, the top of the processing table is provided with an annular groove, and the bottom ends of the rotary table are rotatably connected to rollers via brackets, with the rollers rolling within the annular groove.

[0015] Preferably, a second motor is provided at the bottom of the processing table, and the output shaft of the second motor is connected to the center of the bottom of the rotary table.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] (1) Through automated operation, the time for screwing the nut and valve cap together and pressing the anti-loosening retaining ring is greatly shortened. By using the first motor to drive the straight-line screwing rod to screw the nut, and cooperating with the second motor to drive the rotary table to rotate, multi-station continuous operation is realized, which greatly improves production efficiency and meets the needs of large-scale production.

[0018] (2) The internal hexagonal fixing groove in the fixed seat can accurately position the valve cap, so that the screw position of the nut and the valve cap is accurate. Under the drive of the second cylinder, the pressing rod can press the anti-loosening retaining ring with constant pressure, ensuring that the retaining ring is pressed firmly and evenly, thus improving the product qualification rate.

[0019] (3) The bottom ends of the rotary table are connected to the annular groove on the top of the processing table by rollers. This structural design reduces the friction when the rotary table rotates, making the rotary table run more smoothly. At the same time, the second motor at the bottom of the processing table directly drives the rotary table, and the power transmission is stable, ensuring the stability of the equipment during long-term operation and reducing assembly errors caused by equipment vibration or shaking. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a cross-sectional view of the valve cap of this utility model placed in the internal hexagonal fixing groove;

[0022] Figure 3 This is a schematic diagram of the structure of the pressing rod of this utility model when pressing the anti-detachment retaining ring;

[0023] Figure 4 This is a top view of the rotary table of this utility model;

[0024] Figure 5 This is a top view of the nut of this utility model.

[0025] In the diagram: 1. Frame; 2. Machining table; 3. Rotary table; 4. Fixed base; 5. Machining shell; 6. First motor; 7. Straight-line screwing rod; 8. Pressing rod; 9. Nut; 10. Valve cap; 11. Anti-drop retaining ring; 12. First cylinder; 13. Moving plate; 14. Second cylinder; 15. Guide rod; 16. Hexagonal socket fixing groove; 17. First internal thread; 18. Threaded rod; 19. External thread; 20. Second internal thread; 21. Straight-line screwing groove; 22. Annular slide groove; 23. Roller; 24. Second motor; 25. Threaded base. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] This utility model provides, for example Figure 1-5 The valve plate and valve cap assembly machine shown includes:

[0028] A frame 1, wherein a processing table 2 is connected inside the frame 1 and a rotary table 3 is rotatably connected to the top center of the processing table 2 via a bearing;

[0029] Fixed base 4, wherein the fixed base 4 is provided in several groups and the several groups of fixed base 4 are arranged in a ring on the rotating table 3;

[0030] The processing shell 5 is disposed inside the frame 1 and a first motor 6 is provided inside the processing shell 5. The output shaft of the first motor 6 rotates through the processing shell 5 and is connected to the straight-line screw rod 7.

[0031] The pressing rod 8 is located inside the frame 1 and is used to press the anti-loosening retaining ring 11 at the screw connection between the nut 9 and the valve cap 10.

[0032] The first cylinder 12 is mounted inside the frame 1 via a mounting bracket. The piston rod of the first cylinder 12 is connected to a moving plate 13, and the processing shell 5 is connected to the bottom of the moving plate 13.

[0033] The movable plate 13 is equipped with a second cylinder 14, and the piston rod of the second cylinder 14 is connected to the pressing rod 8. Inside the frame 1 and on both sides of the processing shell 5, there are guide rods 15. The two ends of the movable plate 13 are slidably sleeved on the guide rods 15. The structural design of the guide rods 15 and the movable plate 13 being slidably sleeved provides a stable guiding effect for the movement of the movable plate 13. During the process of the first cylinder 12 pushing the movable plate 13 to move up and down, the guide rods 15 can restrict the movement trajectory of the movable plate 13, so that it can only move in a straight line along the direction of the guide rods 15, thus avoiding the movable plate 13 from shaking or deviating during the movement.

[0034] The fixing seat 4 is provided with two sets of internal hexagonal fixing grooves 16 for placing the valve cap 10. The valve cap 10 is provided with a groove and the inner wall of the groove is provided with a first internal thread 17. A threaded rod 18 is connected in the groove. The external thread 19 on the surface of the nut 9 is threadedly connected to the first internal thread 17 in the groove of the valve cap 10. The second internal thread 20 provided in the nut 9 is threadedly connected to the threaded rod 18.

[0035] The nut 9 has a straight-line screw groove 21 on its top.

[0036] The processing table 2 is provided with an annular groove 22 on its top. The bottom ends of the rotary table 3 are rotatably connected to rollers 23 via brackets. The rollers 23 are rolled in the annular groove 22. Compared with sliding friction, the rolling connection between the rollers 23 and the annular groove 22 can significantly reduce the friction force experienced by the rotary table 3 when it rotates. During the operation of the assembly machine, the second motor 24 drives the rotary table 3 to rotate, and the rollers 23 roll in the annular groove 22, making the rotation of the rotary table 3 easier and more stable.

[0037] The bottom of the processing table 2 is equipped with a second motor 24. The output shaft of the second motor 24 is connected to the center of the bottom of the rotary table 3. The first motor 6 is model MSMA042A1G. This series of motors has the characteristics of fast response speed and high positioning accuracy. Its rated torque is 4N·m, which can meet the torque requirements of tightening the nut 9. The second motor 24 is model 7200MA-0.75-4P. This motor has a rated power of 0.75kW and a rated speed of 1440r / min. It has the advantages of simple structure, reliable operation and low cost.

[0038] In the loading area of ​​the valve plate and valve cap assembly machine, a vision sensor (not shown in the attached figure) is installed. When the operator places the valve cap 10 into the hexagonal socket 16 of the fixed seat 4, the vision sensor quickly captures the position information of the valve cap 10 and transmits the data to the control system of the equipment. The control system analyzes and processes the data. If it finds that the valve cap 10 is not placed in an accurate position, it will issue an alarm on the display screen of the equipment to prompt the operator to adjust it and ensure that the valve cap 10 can be accurately positioned in the fixed seat 4. At the same time, the nut 9 is also placed in the groove in the valve cap 10 with the straight screw groove 21 facing upward. The straight screw groove 21 at the top corresponds to the subsequent operating parts. Since the fixed seat 4 is arranged in a ring on the rotary table 3, multiple fixed seats 4 can place valve cap 10 and nut 9 at the same time, which provides a basis for batch assembly.

[0039] When the equipment is started, the control system sends a command to the first cylinder 12, causing the piston rod of the first cylinder 12 to extend and drive the moving plate 13 to move downward along the guide rod 15. During the downward movement of the moving plate 13, the displacement sensor monitors its position in real time and feeds the data back to the control system. When the moving plate 13 moves to the set position, the straight-line screw rod 7 is exactly close to the nut 9 on the valve cap 10, and the straight-line screw rod 7 is precisely aligned with the straight-line screw groove 21 on the top of the nut 9. After the alignment is completed, the control system controls the first motor 6 to start, and its output shaft drives the straight-line screw rod. 7 rotates, and a torque sensor is installed on the drive shaft of the first motor 6. The sensor monitors the output torque of the first motor 6 in real time and feeds the data back to the control system. The control system presets a suitable torque range. During the tightening process, if the torque is close to or exceeds the upper limit, the control system reduces the speed of the first motor 6; if the torque is lower than the lower limit, the speed of the first motor 6 is increased to ensure that the external thread 19 and the second internal thread 20 on the surface of the nut 9 are evenly and tightly screwed with the first internal thread 17 and the threaded rod 18 in the inner groove of the valve cap 10, so as to avoid loosening or stripping.

[0040] After the nut 9 and valve cap 10 are screwed together, the piston rod of the first cylinder 12 retracts, driving the moving plate 13 to rise and reset. At this time, the second motor 24 starts under the command of the control system, and its output shaft drives the rotary table 3 to rotate. Angle sensors installed on the rotary table and processing table 2 monitor the rotation angle of the rotary table 3 in real time and feed the data back to the control system. When the rotary table 3 rotates a specific angle, so that the valve cap 10 and nut 9 assembly that has been screwed together reaches the position of pressing the anti-loosening retaining ring 11, the second motor 24 stops rotating.

[0041] After the rotary table 3 is positioned, the second cylinder 14 is activated, driving the pressing rod 8 to move downward and approach the screw joint between the nut 9 and the valve cap 10. During the downward movement, the displacement sensor continuously monitors its position to ensure that the pressing rod 8 accurately reaches the target position. When the pressing rod 8 approaches the screw joint, the second cylinder 14 continues to push the pressing rod 8 to move further downward. The control system presets the pressure value required for pressing. When the pressure reaches the standard value, the control system controls the second cylinder 14 to stop applying pressure and maintain it for a certain period of time, so that the anti-loosening retaining ring 11 is firmly pressed into the screw joint between the nut 9 and the valve cap 10, enhancing the connection stability.

[0042] After the anti-loosening retaining ring 11 is pressed, the piston rods of the first cylinder 12 and the second cylinder 14 retract, the moving plate 13 rises and resets, and at the same time, the second motor 24 starts again, the rotary table 3 rotates, and the assembled nut 9 and valve cap 10 assembly is rotated out. The new nut 9 to be assembled and the valve cap 10 enter the corresponding work station. The above-mentioned operations of feeding and positioning, screwing the nut 9, work station switching and pressing the anti-loosening retaining ring 11 are repeated to realize continuous automated assembly production. After the anti-loosening retaining ring 11 is pressed and manually unloaded, the valve plate and the threaded base 25 at the bottom of the valve cap 10 can be manually screwed together to complete the assembly and processing of the valve cap 10 and the valve plate.

[0043] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A valve plate bonnet assembly machine characterized by, include: A frame (1) is provided, and a processing table (2) is connected inside the frame (1). A rotary table (3) is rotatably connected to the top center of the processing table (2) via a bearing. Fixed base (4), the fixed base (4) is provided with several sets and the several sets of fixed bases (4) are arranged in a ring on the rotating table (3); The processing shell (5) is located inside the frame (1) and a first motor (6) is provided inside the processing shell (5). The output shaft of the first motor (6) rotates through the processing shell (5) and is connected to the straight screw rod (7). A pressing rod (8) is provided inside the frame (1) and is used to press the anti-loosening retaining ring (11) at the screw connection of the nut (9) and the valve cap (10).

2. A valve plate bonnet assembly machine as claimed in claim 1 wherein: The first cylinder (12) is installed in the frame (1) by a mounting bracket. The piston rod of the first cylinder (12) is connected to a moving plate (13). The processing shell (5) is connected to the bottom of the moving plate (13).

3. A valve plate bonnet assembly machine as claimed in claim 2 wherein: The movable plate (13) is provided with a second cylinder (14) and the piston rod of the second cylinder (14) is connected to the pressing rod (8). The frame (1) is connected to guide rods (15) on both sides of the processing shell (5). The two ends of the movable plate (13) are slidably sleeved on the guide rods (15).

4. A valve plate bonnet assembly machine as claimed in claim 1 wherein: The fixing seat (4) is provided with two sets of internal hexagonal fixing grooves (16) for placing the valve cap (10). The valve cap (10) is provided with a groove and the inner wall of the groove is provided with a first internal thread (17). A threaded rod (18) is connected in the groove. The external thread (19) on the surface of the nut (9) is threadedly connected to the first internal thread (17) in the groove of the valve cap (10). The second internal thread (20) provided in the nut (9) is threadedly connected to the threaded rod (18).

5. A valve plate bonnet assembly machine as claimed in claim 1 wherein: The nut (9) has a slotted groove (21) on its top.

6. A valve plate bonnet assembly machine as claimed in claim 1 wherein: The processing table (2) has an annular groove (22) on its top, and the bottom ends of the rotary table (3) are rotatably connected to rollers (23) by brackets. The rollers (23) are rotatably connected in the annular groove (22).

7. A valve plate bonnet assembly machine as claimed in claim 1 wherein: The bottom of the processing table (2) is provided with a second motor (24), and the output shaft of the second motor (24) is connected to the center of the bottom of the rotary table (3).

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