A valve ball clamping device

Abstract

This utility model belongs to the field of clamping devices, specifically a valve ball clamping device, including a base, a movable clamping device on the top of the base, the movable clamping device including a clamping component and a movable component; the clamping component includes a connecting frame, a fixed plate is fixedly installed on the top of the connecting frame, a first small motor is fixedly installed on the bottom of the fixed plate, a threaded screw is fixedly installed on the output end of the first small motor, the threaded screw passes through and is threadedly connected to a threaded sleeve, and a ball placement block is fixedly installed on the top of the threaded screw; the first small motor drives the threaded screw to rotate, causing the threaded sleeve to move up and down, and the opening and closing of four sets of clamping claws are synchronously controlled by the linkage rod and the movable arm, which can adapt to valve balls of different diameters; the rubber clamping claws provide elastic clamping force, avoiding hard damage, solving the problems of poor adaptability and clamping damage in the prior art, and improving processing compatibility.

Description

Technical Field

[0001] This utility model relates to the field of clamping devices, specifically a valve ball clamping device. Background Technology

[0002] Valve ball clamping is a critical step in the manufacturing, processing, and maintenance of ball valves, directly affecting the stability, sealing performance, and processing accuracy of the ball.

[0003] Chinese Patent No. CN202420222250.9 discloses a valve ball clamping device, including a worktable with an installation wall on it. The installation wall has a retractable first clamping arm and a second clamping arm, which are arranged opposite to each other. A square is provided on the end of the first clamping arm near the second clamping arm, and two chamfers are formed on the end of the square near the second clamping arm, with the chamfers being opposite to each other. Two arc-shaped fixing strips are provided on the end of the second clamping arm near the first clamping arm, symmetrically arranged on both sides of the square. Both the first and second clamping arms are equipped with a length adjustment mechanism.

[0004] As can be seen from the above, the first clamping arm and the second clamping arm are arranged relative to each other. Therefore, when valve balls of different sizes are clamped, it is only necessary to adjust the distance between the block and the fixing strip. However, this case also has the following shortcomings: First, the clamping structure is fixed and cannot adapt to valve balls of different diameters. The clamps need to be replaced manually, which is inefficient.

[0005] Secondly, the rigid clamping method, with its non-adjustable clamping force, can easily cause scratches on the surface of the sphere or result in insecure clamping, affecting processing accuracy.

[0006] Third, the clamping position is fixed, which cannot meet the needs of multi-angle processing and lacks flexibility.

[0007] Therefore, a valve ball clamping device is proposed to address the above problems. Utility Model Content

[0008] To overcome the shortcomings of existing technologies, such as poor adaptability, inaccurate control of clamping force, and limited processing angle during valve ball clamping, this utility model proposes a valve ball clamping device.

[0009] The technical solution adopted by this utility model to solve its technical problem is as follows: A valve ball clamping device of this utility model includes a base, and a movable clamping device is provided on the top of the base. The movable clamping device includes a clamping component and a movable component. The clamping component includes a connecting frame, and a fixed plate is fixedly installed on the top of the connecting frame. A first small motor is fixedly installed on the bottom of the fixed plate. A threaded screw is fixedly installed on the output end of the first small motor. A threaded sleeve is threaded through and threadedly connected to the threaded screw. A ball placement block is fixedly installed on the top of the threaded screw. Several limiting rods are fixedly installed on the top of the fixed plate. The other end of the several limiting rods is threaded through and fixedly installed with the threaded sleeve, thereby limiting the movement path of the threaded sleeve.

[0010] Preferably, the movable component includes a second small motor, the output end of which is fixedly mounted with a gear, and one side of the gear is meshed with an arc-shaped rack, which is fixedly mounted on the bottom of the movable plate.

[0011] Preferably, the movable component further includes a connecting plate, which has two arc-shaped grooves, and arc-shaped blocks are slidably installed through the arc-shaped grooves, with the arc-shaped blocks fixedly installed on one side of the movable plate.

[0012] Preferably, the connecting plate is fixedly installed on the top of the base, a second small motor is fixedly installed on the top of the connecting plate, and a connecting frame is fixedly installed on the top of the movable plate.

[0013] Preferably, the clamping component further includes four support blocks, which are fixedly installed around the perimeter of the fixed disk. Each of the four support blocks is hinged with two movable arms, and each of the four movable arms is hinged with a linkage rod in the middle. The other end of each linkage rod is hinged to the perimeter of the threaded sleeve. The fixed disk has a movable groove, and the threaded screw passes through the movable groove and extends to the top of the fixed disk.

[0014] Preferably, the clamping member further includes four clamping claws, and two movable arms are hinged to the bottom of each of the four clamping claws. The clamping claws are made of rubber.

[0015] The advantages of this utility model are:

[0016] 1. This utility model, through the structural design of the clamping component, uses a first small motor to drive the threaded screw to rotate, which in turn drives the threaded sleeve to move up and down. The opening and closing of four sets of clamping claws are synchronously controlled by the linkage rod and the movable arm, which can adapt to valve balls of different diameters. The rubber clamping claws provide elastic clamping force to avoid hard damage, which solves the problems of poor adaptability and clamping damage in the prior art and improves processing compatibility.

[0017] 2. This utility model, through the structural design of the movable component, uses a second small motor to drive the gear to mesh with the arc-shaped rack, causing the movable plate to swing along the arc-shaped groove, thereby realizing the angle adjustment of the clamping component, meeting the multi-directional processing needs of the sphere, solving the problem of limited angle of traditional fixed clamping, and improving processing flexibility and efficiency. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is an exploded view of the overall structure of this utility model;

[0021] Figure 3 This is an exploded view of the clamping component structure of this utility model;

[0022] Figure 4 This utility model Figure 3 Enlarged schematic diagram of the structure at point A in the middle;

[0023] Figure 5 This is an exploded view of the movable component structure of this utility model.

[0024] In the diagram: 1. Base; 2. Movable clamping device; 3. Clamping component; 4. Movable component; 21. Connecting frame; 22. Fixed plate; 23. Support block; 24. First small motor; 25. Threaded screw; 26. Movable arm; 27. Clamping claw; 28. Linkage rod; 29. ​​Threaded sleeve; 31. Limiting rod; 32. Ball placement block; 41. Connecting plate; 42. Second small motor; 43. Gear; 44. Arc-shaped rack; 45. Movable plate; 46. Arc-shaped block; 47. Arc-shaped groove. Detailed Implementation

[0025] 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 scope of protection of the present utility model.

[0026] Please see Figures 1-5As shown, a valve ball clamping device includes a base 1, a movable clamping device 2 is provided on the top of the base 1, the movable clamping device 2 includes a clamping component 3 and a movable component 4; the clamping component 3 includes a connecting frame 21, a fixed plate 22 is fixedly installed on the top of the connecting frame 21, a first small motor 24 is fixedly installed on the bottom of the fixed plate 22, a threaded screw 25 is fixedly installed on the output end of the first small motor 24, a threaded sleeve 29 is threaded through and threadedly connected to the threaded screw 25, a ball placement block 32 is fixedly installed on the top of the threaded screw 25, and a plurality of limiting rods 31 are fixedly installed on the top of the fixed plate 22, the other end of the plurality of limiting rods 31 is threaded through and fixedly installed on the threaded sleeve 29, thereby limiting the movement path of the threaded sleeve 29;

[0027] During operation, the first small motor 24 is fixed to the bottom of the fixed plate 22, and its output end is connected to the threaded screw 25. The threaded screw 25 passes through the threaded sleeve 29 and forms a threaded transmission. A ball placement block 32 is installed at the top, and the movement path of the threaded sleeve 29 is limited by the limiting rod 31 at the bottom.

[0028] Furthermore, the movable component 4 includes a second small motor 42, the output end of which is fixedly mounted with a gear 43, and one side of the gear 43 is meshed with an arc-shaped rack 44, which is fixedly mounted on the bottom of the movable plate 45.

[0029] During operation, the second small motor 42 drives the gear 43 to rotate, and through the gear and rack transmission, pushes the movable plate 45 to swing along an arc trajectory, so as to achieve precise adjustment of the clamping angle.

[0030] Furthermore, the movable component 4 also includes a connecting plate 41, which has two arc-shaped grooves 47, and arc-shaped blocks 46 are slidably installed through the arc-shaped grooves 47 respectively. The arc-shaped blocks 46 are fixedly installed on one side of the movable plate 45.

[0031] During operation, the arc-shaped block 46 slides within the arc-shaped groove 47, providing stable guidance for the swing of the movable plate 45 and preventing deviation during angle adjustment.

[0032] Furthermore, the connecting plate 41 is fixedly installed on the top of the base 1, the second small motor 42 is fixedly installed on the top of the connecting plate 41, and the connecting bracket 21 is fixedly installed on the top of the movable plate 45.

[0033] During operation, the connecting plate 41 serves as the base of the movable part 4, connecting the base 1 and the clamping part 3 into a whole, ensuring structural stability.

[0034] Furthermore, the clamping component 3 also includes four support blocks 23. The four support blocks 23 are fixedly installed around the fixed plate 22. Each of the four support blocks 23 is hinged with two movable arms 26. The middle of each of the four movable arms 26 is hinged with a linkage rod 28. The other end of the four linkage rods 28 is hinged around the threaded sleeve 29. The fixed plate 22 has a movable groove. The threaded screw 25 passes through the movable groove and extends to the top of the fixed plate 22.

[0035] During operation, as the threaded sleeve 29 moves up and down, the linkage rod 28 pulls the movable arm 26 to rotate around the support block 23, thereby achieving the synchronous opening and closing of the four sets of clamping claws 27 and ensuring a uniform distribution of clamping force.

[0036] Furthermore, the clamping component 3 also includes four clamping claws 27, and two movable arms 26 are hinged to the bottom of each of the four clamping claws 27. The clamping claws 27 are made of rubber.

[0037] During operation, the rubber gripper 27 fits tightly against the surface of the ball through elastic deformation, applying sufficient clamping force while avoiding indentations or scratches caused by hard metal contact, making it especially suitable for machining high-precision valve balls.

[0038] Working principle: In Example 1, the valve ball is placed on the ball placement block 32. The first small motor 24 is started, and its output end drives the threaded screw 25 to rotate. The threaded sleeve 29 moves downward along the threaded screw 25, and through the linkage rod 28, it pulls the movable arm 26 to rotate around the hinge point of the support block 23. The eight movable arms 26 swing synchronously towards the center, driving the clamping claws 27 to clamp the ball. The rubber clamping claws 27 adapt to the curvature of the ball surface through elastic deformation, applying uniform pressure and avoiding damage from hard contact.

[0039] In the second embodiment, when the clamping angle needs to be adjusted, the second small motor 42 is started, and its output end drives the gear 43 to rotate. The gear 43 meshes with the arc-shaped rack 44, pushing the movable plate 45 to swing along the arc-shaped groove 47 of the connecting plate 41. The arc-shaped block 46 slides in the arc-shaped groove 47 to provide guidance, thereby realizing the angle adjustment of the clamping component and meeting the needs of different processing positions of the ball.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A valve ball gripping device comprising a base (1), characterised in that: The base (1) is provided with a movable clamping device (2) at the top. The movable clamping device (2) includes a clamping component (3) and a movable component (4). The clamping component (3) includes a connecting frame (21). A fixed plate (22) is fixedly installed at the top of the connecting frame (21). A first small motor (24) is fixedly installed at the bottom of the fixed plate (22). A threaded screw (25) is fixedly installed at the output end of the first small motor (24). A threaded sleeve (29) is threaded through and threadedly connected to the threaded screw (25). A ball placement block (32) is fixedly installed at the top of the threaded screw (25). Several limiting rods (31) are fixedly installed at the top of the fixed plate (22). The other end of the several limiting rods (31) is threaded through and fixedly installed to the threaded sleeve (29), thereby limiting the movement path of the threaded sleeve (29).

2. A valve ball gripping device according to claim 1, wherein: The movable component (4) includes a second small motor (42), and a gear (43) is fixedly installed at the output end of the second small motor (42). An arc-shaped rack (44) is meshed on one side of the gear (43), and the arc-shaped rack (44) is fixedly installed at the bottom of the movable plate (45).

3. A valve ball gripping device according to claim 2, wherein: The movable component (4) also includes a connecting plate (41), which has two arc-shaped grooves (47) and arc-shaped blocks (46) are slidably installed through the arc-shaped grooves (47). The arc-shaped blocks (46) are fixedly installed on one side of the movable plate (45).

4. A valve ball gripping device according to claim 3, wherein: The connecting plate (41) is fixedly installed on the top of the base (1), and a second small motor (42) is fixedly installed on the top of the connecting plate (41). A connecting frame (21) is fixedly installed on the top of the movable plate (45).

5. The valve ball gripping device of claim 1, wherein: The clamping member (3) also includes four support blocks (23), which are fixedly installed around the fixed disk (22). Each of the four support blocks (23) is hinged with two movable arms (26), and each of the four movable arms (26) is hinged with a linkage rod (28) in the middle. The other end of the four linkage rods (28) is hinged around the threaded sleeve (29). The fixed disk (22) has a movable groove, and the threaded screw (25) passes through the movable groove and extends to the top of the fixed disk (22).

6. A valve ball gripping device according to claim 5, wherein: The clamping member (3) also includes four clamping claws (27), and two movable arms (26) are respectively hinged to the bottom of the four clamping claws (27). The clamping claws (27) are made of rubber.

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