Automatic centering assembly mechanism for assembling double-eccentric butterfly valve

Abstract

The invention discloses an automatic centering assembly mechanism for double-eccentric butterfly valve assembly, and particularly relates to the technical field of double-eccentric butterfly valve assembly, the automatic centering assembly mechanism comprises a base plate, a distance adjusting assembly, a fixing frame, a lifting mechanism, a lifting plate, a moving mechanism, a moving plate, a rotating mechanism and a plurality of clamping assemblies are sequentially arranged on the base plate, and a camera visual inspection system is assisted. The distance adjusting assembly drives the fixing frame to move transversely through a first electric push rod. The lifting mechanism realizes vertical movement of a lifting plate through screw transmission; the moving mechanism drives a moving plate to transversely slide through a second electric push rod; the rotating mechanism drives a rotating disc to rotate through a second motor and is matched with annularly-distributed clamping assemblies to clamp the butterfly valve part. The camera shoots a pipeline edge image so as to calculate the center position, and all mechanisms are guided to complete automatic centering. Through cooperative operation of multiple mechanisms, automatic positioning, centering and butt joint in the butterfly valve assembling process are achieved, the assembling precision and efficiency are remarkably improved, the labor cost is reduced, and the double-eccentric butterfly valve assembling machine is suitable for efficient assembling of double-eccentric butterfly valves of various specifications.

Description

Technical Field

[0001] The present invention relates to the technical field of double-eccentric butterfly valve assembly, and more particularly to an automatic centering assembly mechanism for a double-eccentric butterfly valve assembly. Background Art

[0002] As a key component in industrial piping systems, the assembly precision of double-eccentric butterfly valves directly impacts pipeline sealing, flow efficiency, and service life. Traditional double-eccentric butterfly valve assembly relies on manual centering and operator experience, resulting in significant issues such as low positioning accuracy, inefficient assembly, and high labor intensity. This inconsistency is particularly pronounced in large-scale production scenarios.

[0003] While existing automated assembly equipment partially achieves mechanical positioning, its limitations are significant. For one thing, traditional mechanical positioning devices can only accommodate a single size of butterfly valve, failing to meet the flexible production requirements for products with varying nominal diameters. Furthermore, they lack real-time detection and dynamic adjustment mechanisms, making them unable to address deviations in pipe interface dimensions or butterfly valve installation angles. This results in repeated adjustments during the centering process, severely impacting production efficiency. For example, some equipment uses a fixed track coupled with a pneumatic cylinder for coarse positioning, but lacks an integrated angle adjustment mechanism. Consequently, the circumferential installation angle of the butterfly valve requires manual secondary correction, which can easily cause misalignment between the valve plate and the pipe flow path, increasing system operational resistance.

[0004] Furthermore, existing technologies lack the ability to link visual inspection with assembly mechanisms. Most devices use the vision system only for initial position calibration, failing to dynamically guide the entire assembly process. When pipe joints shift center due to machining errors, traditional equipment cannot automatically adjust the assembly path based on real-time inspection data, resulting in increased alignment failure rates.

[0005] Therefore, an automatic centering assembly mechanism for double eccentric butterfly valve assembly is proposed. Summary of the Invention

[0006] In order to overcome the above-mentioned defects of the prior art, the present invention provides an automatic centering assembly mechanism for assembling a double-eccentric butterfly valve to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above-mentioned object, the present invention provides the following technical solution: an automatic centering assembly mechanism for assembling a double-eccentric butterfly valve, comprising a base plate, a distance adjustment component mounted on the base plate, a fixed frame mounted on the distance adjustment component, a lifting mechanism mounted on the fixed frame, a lifting plate mounted on one side of the lifting mechanism, a moving mechanism mounted on the lifting plate, the moving mechanism connected to a moving plate, a rotating mechanism mounted on the moving plate, a camera provided on one side of the rotating mechanism, and a plurality of clamping components mounted on the rotating mechanism; The distance adjustment assembly is used to adjust the lateral position of the fixing frame, the lifting mechanism is used to drive the lifting plate to move up and down, the moving mechanism is used to drive the moving plate to move laterally, the rotating mechanism is used to drive the turntable to rotate, and the clamping assembly is used to clamp the butterfly valve component.

[0008] The double eccentric butterfly valve is clamped and fixed by the cooperation of multiple clamping components, and then the position of the camera is adjusted by the cooperation of the moving mechanism and the lifting mechanism, so that the camera moves and detects along the edge of the pipe to be connected to the double eccentric butterfly valve, so that the cross-sectional size of the pipe can be detected to determine the center position of the pipe. The butterfly valves clamped by each clamping component are then rotated by the rotating mechanism to adjust the position. The clamped butterfly valves are then aligned with the pipe to be connected by the cooperation of the moving mechanism and the lifting mechanism. Finally, the distance between the butterfly valve and the pipe is adjusted by the distance adjusting component, so that the butterfly valve and the pipe are docked, thereby performing centering assembly. The coordinated action of the distance adjusting component, the lifting mechanism, the moving mechanism, the rotating mechanism and the clamping component realize automatic positioning, movement, rotation and clamping of the butterfly valve components, and completes the centering assembly, replacing traditional manual assembly, improving assembly accuracy and efficiency, and reducing labor intensity.

[0009] Preferably, the distance adjustment assembly includes a first slide rail, a first slide seat and a first electric push rod, the first slide seat is slidably installed on the first slide rail, and the output end of the first electric push rod is connected to the fixed frame for pushing the fixed frame to move laterally along the first slide rail.

[0010] Preferably, the fixing frame is vertically mounted on the first slide, and the lifting mechanism is mounted on the fixing frame.

[0011] Preferably, the lifting mechanism includes a first motor, a screw, a lifting slider, a guide rod and a guide block. The first motor is installed on the top of the fixed frame. The output end of the first motor is connected to the screw, and the lifting slider is sleeved on the screw. Guide rods are provided on both sides of the screw, and the guide rods are sleeved on the guide blocks.

[0012] Preferably, the lifting slider is installed in the middle of the lifting plate, and the two guide blocks are connected to the lifting plate.

[0013] Preferably, the moving mechanism includes a second slide rail, a second slide seat, a connecting block and a second electric push rod. The two second slide rails are installed in parallel on the lifting plate. Each lifting plate is installed with a second slide seat. The second electric push rod is arranged between the two second slide rails, and the telescopic end of the second electric push rod is connected to the connecting block.

[0014] Preferably, the two second slides are commonly connected to a moving plate, and a connecting block is installed at the bottom of one end of the moving plate.

[0015] Preferably, the rotating mechanism includes a second motor, a rotating rod, a turntable and a support frame. The second motor is installed on the movable plate. The output end of the second motor is connected to the rotating rod. A turntable is installed at one end of the rotating rod. A plurality of support frames are provided on the turntable.

[0016] Preferably, the plurality of support frames are arranged in a ring shape, and a clamping assembly is installed on each support frame.

[0017] Preferably, the clamping assembly includes a third electric push rod and a clamping block, the third electric push rod is installed on the support frame, and the telescopic end of the third electric push rod is connected to the clamping block.

[0018] Technical effects and advantages of the present invention: 1. Through the coordinated operation of the distance adjustment component, lifting mechanism, moving mechanism, rotating mechanism and clamping component, the double eccentric butterfly valve components can be automatically positioned, moved, rotated and clamped, replacing traditional manual assembly, significantly improving assembly accuracy and efficiency, and reducing labor intensity; 2. The camera captures the edge image of the pipeline in real time, calculates the center position of the pipeline through image recognition algorithm, and guides each mechanism to automatically adjust the position of the butterfly valve to achieve micron-level centering accuracy, avoid manual visual errors, and improve assembly accuracy.

[0019] 3. The first electric push rod drives the fixed frame to move along the first slide rail to adapt to the lateral spacing requirements of pipes of different specifications. The screw drive is combined with the guide rod to achieve stable lifting of the lifting plate and accurately control the assembly height. The turntable drives the butterfly valve to rotate, and the circumferential angle of the butterfly valve can be adjusted 360° to ensure that the direction of the valve plate and the pipeline interface are consistent.

[0020] 4. Multiple clamping components are distributed in a ring on the turntable. The third electric push rod drives the clamping block to synchronously clamp the butterfly valve to avoid component displacement during assembly. The distance adjustment component finally pushes the butterfly valve to connect with the pipeline to ensure a tight connection and reduce the risk of leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0022] Figure 2 It is a structural schematic diagram of the distance adjustment mechanism of the present invention.

[0023] Figure 3 It is a structural schematic diagram of the lifting mechanism of the present invention.

[0024] Figure 4 It is a structural schematic diagram of the moving mechanism of the present invention.

[0025] Figure 5 It is a structural schematic diagram of the rotating mechanism of the present invention.

[0026] Figure 6It is a structural schematic diagram of the clamping assembly of the present invention.

[0027] The accompanying drawings are marked as follows: 1. Base plate; 2. Distance adjustment assembly; 201. First slide rail; 202. First slide seat; 203. First electric push rod; 3. Fixed frame; 4. Lifting mechanism; 401. First motor; 402. Screw; 403. Lifting slider; 404. Guide rod; 405. Guide block; 5. Lifting plate; 6. Moving mechanism; 601. Second slide rail; 602. Second slide seat; 603. Connecting block; 604. Second electric push rod; 7. Moving plate; 8. Rotating mechanism; 801. Second motor; 802. Rotating rod; 803. Turntable; 804. Support frame; 9. Camera; 10. Clamping assembly; 1001. Third electric push rod; 1002. Clamping block. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0029] As attached Figure 1-6 The automatic centering assembly mechanism for assembling a double eccentric butterfly valve shown in the figure includes a base plate 1, on which a distance adjustment component 2 is mounted, on which a fixed frame 3 is mounted, on which a lifting mechanism 4 is mounted, a lifting plate 5 is mounted on one side of the lifting mechanism 4, on which a moving mechanism 6 is mounted, the moving mechanism 6 is connected to a moving plate 7, on which a rotating mechanism 8 is mounted, a camera 9 is provided on one side of the rotating mechanism 8, and a plurality of clamping components 10 are mounted on the rotating mechanism 8;

[0030] The distance adjustment component 2 is used to adjust the lateral position of the fixed frame 3, the lifting mechanism 4 is used to drive the lifting plate 5 to move up and down, the moving mechanism 6 is used to drive the moving plate 7 to move laterally, the rotating mechanism 8 is used to drive the turntable 803 to rotate, and the clamping component 10 is used to clamp the butterfly valve component.

[0031] During specific implementation, the double eccentric butterfly valve is clamped and fixed by multiple clamping components 10, and then the position of the camera 9 is adjusted by the cooperation of the moving mechanism 6 and the lifting mechanism 4, so that the camera 9 moves along the edge of the pipe to be connected to the double eccentric butterfly valve for detection, so that the cross-sectional size of the detection pipe can be determined to determine the center position of the pipe, and then the butterfly valves clamped by each clamping component 10 are adjusted by rotation through the rotating mechanism 8, and then the clamped butterfly valves are aligned with the pipe to be connected by the cooperation of the moving mechanism 6 and the lifting mechanism 4, and finally the distance between the butterfly valve and the pipe is adjusted by the distance adjusting component 2, so that the butterfly valve and the pipe are docked, thereby performing centering assembly. Through the coordinated action of the distance adjusting component 2, the lifting mechanism 4, the moving mechanism 6, the rotating mechanism 8 and the clamping component 10, the butterfly valve components are automatically positioned, moved, rotated and clamped, and the centering assembly is completed, replacing traditional manual assembly, improving assembly accuracy and efficiency, and reducing labor intensity.

[0032] The distance adjustment component 2 includes a first slide rail 201, a first slide seat 202 and a first electric push rod 203. The first slide seat 202 is slidably installed on the first slide rail 201. The output end of the first electric push rod 203 is connected to the fixed frame 3 for pushing the fixed frame 3 to move laterally along the first slide rail 201.

[0033] The fixing frame 3 is vertically mounted on the first slide 202 , and the lifting mechanism 4 is mounted on the fixing frame 3 .

[0034] During specific implementation, the linear thrust of the first electric push rod 203 causes the first slide 202 to move back and forth along the direction of the first slide rail 201, thereby driving the fixed frame 3 to slide on the first slide rail 201, thereby adjusting the lateral position of the fixed frame 3 and accurately adjusting the position of the fixed frame 3 to meet the assembly requirements of butterfly valves of different specifications.

[0035] The lifting mechanism 4 includes a first motor 401, a screw 402, a lifting slider 403, a guide rod 404 and a guide block 405. The first motor 401 is installed on the top of the fixed frame 3. The output end of the first motor 401 is connected to the screw 402, and the lifting slider 403 is sleeved on the screw 402. Guide rods 404 are provided on both sides of the screw 402, and the guide blocks 405 are sleeved on the guide rods 404.

[0036] The lifting slider 403 is installed in the middle of the lifting plate 5 , and the two guide blocks 405 are both connected to the lifting plate 5 .

[0037] During specific implementation, the screw 402 is driven to rotate by the first motor 401, and the rotational motion is converted into the vertical motion of the lifting slider 403 by thread transmission. The guide rod 404 and the guide block 405 limit the lifting direction to avoid shaking, thereby achieving stable vertical lifting of the lifting plate 5 and adjusting the assembly height.

[0038] The moving mechanism 6 includes a second slide rail 601, a second slide seat 602, a connecting block 603 and a second electric push rod 604. The two second slide rails 601 are installed in parallel on the lifting plate 5. Each lifting plate 5 is installed with a second slide seat 602. The second electric push rod 604 is arranged between the two second slide rails 601, and the telescopic end of the second electric push rod 604 is connected to the connecting block 603.

[0039] The two second slides 602 are commonly connected to the moving plate 7 , and the connecting block 603 is installed at the bottom of one end of the moving plate 7 .

[0040] During specific implementation, the second electric push rod 604 pushes the movable plate 7 through the connecting block 603, so that the second slide 602 slides on the second slide rail 601, realizes the lateral movement of the movable plate 7, accurately adjusts the position of the movable plate 7, and ensures the lateral centering of the butterfly valve component.

[0041] The rotating mechanism 8 includes a second motor 801, a rotating rod 802, a turntable 803 and a support frame 804. The second motor 801 is installed on the movable plate 7. The output end of the second motor 801 is connected to the rotating rod 802. A turntable 803 is installed at one end of the rotating rod 802. A plurality of support frames 804 are provided on the turntable 803.

[0042] The plurality of support frames 804 are arranged in a ring shape, and a clamping assembly 10 is installed on each support frame 804 .

[0043] During specific implementation, the second motor 801 drives the turntable 803 to rotate through the rotating rod 802, and the support frame 804 fixes the rotating rod 802 and provides support, so that the butterfly valve component rotates with the turntable 803. The angle of the butterfly valve component is adjusted by rotation to achieve the straightening of the butterfly valve, thereby improving the assembly accuracy.

[0044] The clamping assembly 10 includes a third electric push rod 1001 and a clamping block 1002 . The third electric push rod 1001 is installed on the support frame 804 . The telescopic end of the third electric push rod 1001 is connected to the clamping block 1002 .

[0045] In specific implementation, the telescopic movement of the third electric push rod 1001 drives the clamping block 1002 to open and close, thereby clamping or releasing the butterfly valve component through the cooperation of multiple clamping blocks 1002, thereby stably clamping the butterfly valve component, avoiding displacement during assembly, and improving assembly reliability.

[0046] Specifically, through the operation of each third electric push rod 1001, each clamping block 1002 can clamp and fix the double eccentric butterfly valve at the same time, and the second motor 801 drives the rotating rod 802 to rotate, so that the double eccentric butterfly valve clamped on the turntable 803 can be straightened as it rotates, and then the first motor 401 is used to drive the screw 402 to rotate, and the second electric push rod 604 pushes and pulls the connecting block 603, so that the lifting plate 5 can be lifted and lowered, and the movable plate 7 can be moved left and right, so that the camera 9 can be moved in the plane, so as to comprehensively detect the cross-sectional circle of the assembly pipe connected to the double eccentric butterfly valve, so as to locate the center of the pipe, and then the center of the clamped double eccentric butterfly valve is matched with the center of the pipe, and finally, by pushing the fixed frame 3 to move, the pipe is connected to the double eccentric butterfly valve, so as to achieve centered assembly and improve assembly accuracy and assembly efficiency.

[0047] Finally, a few points should be explained: First, in the description of the present invention, it should be noted that, unless otherwise specified or limited, the terms "mounted", "connected", and "connected" should be understood in a broad sense, and may refer to mechanical or electrical connections, internal communication between two components, or direct connection. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change. Secondly: The drawings of the embodiments disclosed in the present invention only involve structures related to the embodiments disclosed in the present invention. Other structures may refer to conventional designs. The same embodiment and different embodiments of the present invention may be combined with each other without conflict. Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An automatic centering assembly mechanism for assembling a double eccentric butterfly valve, comprising a base plate (1), characterized in that: The base plate (1) is provided with a distance adjustment component (2), a fixing frame (3) is provided on the distance adjustment component (2), a lifting mechanism (4) is provided on the fixing frame (3), a lifting plate (5) is provided on one side of the lifting mechanism (4), a moving mechanism (6) is provided on the lifting plate (5), the moving mechanism (6) is connected to a moving plate (7), a rotating mechanism (8) is provided on the moving plate (7), a camera (9) is provided on one side of the rotating mechanism (8), and a plurality of clamping components (10) are provided on the rotating mechanism (8); The distance adjustment assembly (2) is used to adjust the lateral position of the fixed frame (3), the lifting mechanism (4) is used to drive the lifting plate (5) to move up and down, the moving mechanism (6) is used to drive the moving plate (7) to move laterally, the rotating mechanism (8) is used to drive the turntable (803) to rotate, and the clamping assembly (10) is used to clamp the butterfly valve component.

2. The automatic centering assembly mechanism for double eccentric butterfly valves according to claim 1 is characterized in that: The distance adjustment assembly (2) comprises a first slide rail (201), a first slide seat (202) and a first electric push rod (203), wherein the first slide seat (202) is slidably mounted on the first slide rail (201), and an output end of the first electric push rod (203) is connected to the fixed frame (3) for pushing the fixed frame (3) to move laterally along the first slide rail (201).

3. The automatic centering assembly mechanism for double eccentric butterfly valves according to claim 2 is characterized in that: The fixing frame (3) is vertically mounted on the first slide (202), and the lifting mechanism (4) is mounted on the fixing frame (3).

4. The automatic centering assembly mechanism for double eccentric butterfly valves according to claim 3 is characterized in that: The lifting mechanism (4) comprises a first motor (401), a screw (402), a lifting slider (403), a guide rod (404) and a guide block (405). The first motor (401) is mounted on the top of the fixed frame (3). The output end of the first motor (401) is connected to the screw (402). The lifting slider (403) is sleeved on the screw (402). Guide rods (404) are provided on both sides of the screw (402). The guide rods (404) are sleeved on the guide blocks (405).

5. The automatic centering assembly mechanism for double eccentric butterfly valves according to claim 4 is characterized in that: The lifting slider (403) is installed in the middle of the lifting plate (5), and the two guide blocks (405) are both connected to the lifting plate (5).

6. The automatic centering assembly mechanism for double eccentric butterfly valves according to claim 5, characterized in that: The moving mechanism (6) comprises a second slide rail (601), a second slide seat (602), a connecting block (603) and a second electric push rod (604), wherein the two second slide rails (601) are mounted in parallel on the lifting plate (5), and each lifting plate (5) is mounted with a second slide seat (602), the second electric push rod (604) is arranged between the two second slide rails (601), and the telescopic end of the second electric push rod (604) is connected to the connecting block (603).

7. The automatic centering assembly mechanism for a double eccentric butterfly valve according to claim 6, characterized in that: The two second slides (602) are commonly connected to a movable plate (7), and a connecting block (603) is installed at the bottom of one end of the movable plate (7).

8. The automatic centering assembly mechanism for a double eccentric butterfly valve according to claim 7, characterized in that: The rotating mechanism (8) comprises a second motor (801), a rotating rod (802), a rotating disk (803) and a supporting frame (804); the second motor (801) is mounted on the movable plate (7); the output end of the second motor (801) is connected to the rotating rod (802); a rotating disk (803) is mounted on one end of the rotating rod (802); and a plurality of supporting frames (804) are provided on the rotating disk (803).

9. The automatic centering assembly mechanism for double eccentric butterfly valves according to claim 8, characterized in that: The plurality of support frames (804) are arranged in a ring shape, and a clamping assembly (10) is mounted on each support frame (804).

10. The automatic centering assembly mechanism for a double eccentric butterfly valve according to claim 9, characterized in that: The clamping assembly (10) comprises a third electric push rod (1001) and a clamping block (1002), wherein the third electric push rod (1001) is mounted on a support frame (804), and the telescopic end of the third electric push rod (1001) is connected to the clamping block (1002).

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