Mechanical gripper structure for a robot

By combining three sets of gripper mechanisms driven by independent motors with camera monitoring, the mechanical gripper can stably grasp irregular or tilted objects, solving the problem of unstable gripping in existing technologies and improving the accuracy and reliability of gripping.

CN224509729UActive Publication Date: 2026-07-17ZHEJIANG CHENXIANG ARTIFICIAL INTELLIGENCE TECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Utility models(China)
Current Assignee / Owner
ZHEJIANG CHENXIANG ARTIFICIAL INTELLIGENCE TECHNOLOGY CO LTD
Filing Date
2025-07-30
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

When existing multi-functional mechanical grippers of machining robots grasp irregularly shaped or tilted objects, the mechanical balance between the gripping point and the center of gravity of the object is broken, resulting in unstable gripping state and easy rotation, shaking or falling off.

Method used

The system employs three sets of gripper mechanisms driven by independent motors, combined with real-time camera monitoring and controller analysis, to achieve independent angle adjustment and posture adjustment of the grippers. The multi-link structure ensures stable contact and appropriate force between the gripper plate and the object.

Benefits of technology

It achieves efficient and stable gripping of objects with different angles and shapes, improves the adaptability of the mechanical gripper and the accuracy of the gripping process, and ensures the reliability of the clamping state.

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Abstract

The utility model discloses a kind of mechanical claw structures of robot, comprising: installation cylinder, top cover is fixedly installed on installation cylinder upper surface, the upper surface of top cover is equidistantly opened with three groups of turning mouth, and three groups of turning mouth are all rotationally installed with connecting disc, and the upper surface of each group of connecting disc is all fixedly installed with clamping jaw mechanism. The design of the present application through clamping jaw mechanism, make it through to the independent angle adjustment of three groups of clamping jaw mechanism and the state of object and clamping jaw mechanism is monitored by camera continuously, can ensure that clamping jaw mechanism always keeps optimum clamping posture, to realize efficient, stably complete grabbing action.
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Claims

1. A mechanical gripper structure of a robot, characterized by comprising: include: Mounting cylinder (1), the upper surface of which is fixedly mounted with a top cover (101), the upper surface of which is provided with three sets of rotating openings (104) at equal intervals, each of which is rotatably mounted with a connecting plate (103), and each of which is fixedly mounted with a gripper mechanism (2) on the upper surface of the connecting plate (103).

2. The mechanical gripper structure of a robot according to claim 1, characterized in that: Each set of the rotating port (104) has a mounting tube (105) connected to its lower surface. The mounting tube (105) is located inside the mounting cylinder (1). Each set of the mounting tube (105) has a motor (106) fixedly installed inside it. The output shaft of each set of the motor (106) is fixedly connected to the lower surface of the connecting plate (103).

3. The mechanical gripper structure of a robot according to claim 1, characterized in that: All three gripper mechanisms (2) can be rotated independently by a motor (106) via a connecting plate (103).

4. The gripper structure of a robot according to claim 3, wherein: A camera (102) is fixedly installed on the upper surface of the top cover (101). The camera (102) is connected to the controller via an RS-485 signal line. The controller is integrated into the mounting cylinder (1), and the control output terminal of the controller is electrically connected to the electrical control terminal of the motor (106).

5. The gripper structure of a robot according to claim 1, characterized in that: The gripper mechanism (2) includes a first connecting arm (201), which is rotatably mounted on the upper surface of the connecting plate (103). An L-shaped plate (202) is rotatably mounted on the other end of the first connecting arm (201). A gripper plate (203) is detachably mounted on the other end of the L-shaped plate (202) by bolts. One end of the L-shaped plate (202) is rotatably connected to the piston rod of the electric push rod (206). The electric push rod (206) is rotatably mounted on the upper surface of the connecting plate (103) and is controlled by the controller.

6. The gripper structure of a robot according to claim 5, wherein: A second connecting arm (204) is rotatably mounted inside the first connecting arm (201), and a third connecting arm (205) is rotatably mounted at the other end of the second connecting arm (204). The other end of the third connecting arm (205) is rotatably mounted at one end of the L-shaped plate (202).