Product grabbing manipulator

By combining a cylinder-driven gripper with negative pressure and a servo motor support frame, the stability problem of the robotic arm when grasping irregular or heavy objects is solved, achieving dual gripping, preventing slippage and shaking, and improving gripping stability.

CN223507214UActive Publication Date: 2025-11-04KUNMING UNIV OF SCI & TECH
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202422609398.0
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-10-28
Publication Date
2025-11-04
Estimated Expiration
2034-10-28

AI Technical Summary

Technical Problem

Existing robotic arms are prone to problems such as unstable gripping and slippage when grasping irregular or heavy items, which affects processing efficiency.

Method used

The gripper, driven by a cylinder, combines a negative pressure component and a support component. The gripper is equipped with an air extraction channel and a negative pressure component. It uses the negative pressure effect to adsorb products, while the support frame driven by a servo motor provides additional support force, achieving both mechanical and physical gripping.

Benefits of technology

It effectively prevents items from slipping and shaking during transportation, improves gripping stability, and is especially suitable for products with irregular shapes or heavy weight.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN223507214U_ABST
    Figure CN223507214U_ABST
Patent Text Reader

Abstract

The utility model discloses a product grabbing manipulator, which relates to the technical field of manipulators and comprises an air cylinder, a plurality of mounting blocks are circumferentially and fixedly mounted below the outer surface of the air cylinder at equal intervals, and two first connecting rods and two second connecting rods are rotatably mounted at the bottom end of each mounting block. The multiple mounting blocks are provided with clamping jaws through the two corresponding first connecting rods and the two corresponding second connecting rods. A product is preliminarily fixed through the mechanical clamping force of the clamping jaw, meanwhile, the negative pressure effect generated by the negative pressure assembly is utilized, the product is tightly adsorbed to the clamping jaw, mechanical and physical double grabbing is achieved, and the product is effectively prevented from sliding off or shaking in the transferring process; after the product is grabbed by the clamping jaw, the steering engine in the bearing assembly drives the supporting frame to rotate to the position below the product, additional upward supporting force is provided for the product, the grabbing stability of the mechanical arm is further enhanced, and the mechanical arm is particularly suitable for products with large weights or irregular shapes.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This utility model relates to the field of robotic arm technology, and in particular to a product gripping robotic arm. Background Technology

[0002] In the fields of automated production and logistics, the stability and reliability of the gripping function of robotic arms, as execution devices, are crucial to the efficiency of the entire system.

[0003] When using electric robotic arms, grippers are often used to hold and move objects. However, objects are prone to shaking during movement, which can cause them to fall and become damaged, affecting processing efficiency. Traditional robotic arms often rely solely on mechanical gripping force when grasping products. This method is prone to problems such as unstable gripping and slippage when dealing with products that are irregularly shaped, have slippery surfaces, or are heavy. Therefore, to solve the aforementioned problems, we propose a product gripping robotic arm. Utility Model Content

[0004] The purpose of this utility model is to address the deficiencies in the existing technology by proposing a product gripping robot.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A product gripping robot includes a cylinder. Multiple mounting blocks are fixedly installed equidistantly around the lower part of the outer surface of the cylinder. Two first connecting rods and two second connecting rods are rotatably mounted on the bottom end of each mounting block. Grippers are mounted on each mounting block via corresponding two first connecting rods and two second connecting rods. Multiple push rods are movably mounted equidistantly around the output end of the cylinder. One end of each push rod is movably connected to the middle of a corresponding two first connecting rods.

[0007] A negative pressure component is fixedly installed on the lower inner side of the gripper, and a support component is fixedly installed on the lower outer side of the gripper. An air extraction channel is opened inside the gripper, and the air extraction channel is connected to the negative pressure component.

[0008] Furthermore, the negative pressure assembly includes a hollow plate, on the side of the hollow plate away from the gripper, a plurality of through holes are equidistantly provided, and a silicone ring is fixedly installed at one end of each of the plurality of through holes.

[0009] Furthermore, the supporting assembly includes a servo motor, and a support frame is fixedly mounted on the output end of the servo motor.

[0010] Furthermore, a mounting groove is provided on the lower outer side of the gripper, through which the servo motor is fixedly mounted.

[0011] Furthermore, an air extraction pipe is fixedly connected to the top end of the air extraction channel, and the air extraction pipe is a flexible hose.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] This invention uses the mechanical clamping force of the grippers to initially fix the product, while using the negative pressure effect generated by the negative pressure component to tightly adhere the product to the grippers, achieving both mechanical and physical gripping, effectively preventing the product from slipping or shaking during transportation.

[0014] After the gripper grasps the product, the servo motor in the support assembly drives the support frame to rotate under the product, providing additional upward support and further enhancing the gripping stability of the robot. This is especially suitable for products that are heavy or irregularly shaped. Attached Figure Description

[0015] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a perspective view of the gripper of this utility model;

[0018] Figure 3 This is a cross-sectional view of the gripper of this utility model.

[0019] In the diagram: 1. Cylinder; 2. Mounting block; 3. Push rod; 4. First connecting rod; 5. Second connecting rod; 6. Gripper; 7. Servo; 8. Support frame; 9. Air extraction channel; 10. Air extraction pipe; 11. Mounting slot; 12. Hollow plate; 13. Silicone ring. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model;

[0021] Reference Figure 1-3 A product gripping robot includes a cylinder 1. Multiple mounting blocks 2 are fixedly installed equidistantly on the lower part of the outer surface of the cylinder 1. Two first connecting rods 4 and two second connecting rods 5 are rotatably installed at the bottom end of each mounting block 2. Each mounting block 2 is equipped with a gripper 6 through the corresponding two first connecting rods 4 and two second connecting rods 5. Multiple push rods 3 are movably installed equidistantly on the output end of the cylinder 1. One end of each push rod 3 is movably connected to the middle of the corresponding two first connecting rods 4.

[0022] The extension and retraction of the output end of cylinder 1 can be achieved by pushing and pulling the first connecting rod 4 through push rod 3. The first connecting rod 4, in cooperation with the second connecting rod 5, can realize the opening and closing of the gripper 6. Multiple grippers 6 can cooperate with each other to grasp the product.

[0023] A negative pressure component is fixedly installed on the lower inner side of the gripper 6, and a support component is fixedly installed on the lower outer side of the gripper 6. An air extraction channel 9 is opened inside the gripper 6, and the air extraction channel 9 is connected to the negative pressure component.

[0024] After the gripper 6 comes into contact with the product, the negative pressure component can press against the outer surface of the product, and the air extraction channel 9 will extract air. This can work with the negative pressure component to adsorb the product onto the gripper 6, allowing the robot to grip the product more firmly. After the gripper 6 grips the product, the support component operates to support the product from below, maintaining its stability and improving the stability of the robot's gripping of the product during movement.

[0025] The top end of the air extraction channel 9 is fixedly connected to the air extraction pipe 10, which is a flexible hose. The negative pressure component includes a hollow plate 12. Multiple through holes are equidistantly opened on the side of the hollow plate 12 away from the gripper 6. A silicone ring 13 is fixedly installed at one end of each of the multiple through holes.

[0026] One end of the air extraction pipe 9 can be connected to an air extraction mechanism such as an air pump, which can extract the air from the air extraction channel 9 and the hollow plate 12. The silicone ring 13 can be tightly attached to the product surface under negative pressure, increasing the friction between the product and the robot's gripping ability.

[0027] The supporting assembly includes a servo motor 7, and a support frame 8 is fixedly mounted on the output end of the servo motor 7. A mounting groove 11 is provided on the lower outer side of the gripper 6, and the servo motor 7 is fixedly mounted on the gripper 6 through the mounting groove 11.

[0028] Servo motor 7 can drive support frame 8 to rotate, and support frame 8 can rotate to be below the product or fit against the product to provide upward support for the product and prevent the product from falling during transportation; support frame 8 can be designed to fit the product in a shape that can better fit the product surface and provide stable support.

Claims

1. A product gripping robot, comprising a cylinder (1), characterized in that, Multiple mounting blocks (2) are fixedly installed at equal intervals around the lower outer surface of the cylinder (1). Two first connecting rods (4) and two second connecting rods (5) are rotatably mounted on the bottom end of each mounting block (2). Each mounting block (2) is equipped with a gripper (6) through the corresponding two first connecting rods (4) and two second connecting rods (5). Multiple push rods (3) are movably mounted at equal intervals around the output end of the cylinder (1). One end of each push rod (3) is movably connected to the middle of the corresponding two first connecting rods (4). A negative pressure component is fixedly installed on the lower inner side of the gripper (6), and a support component is fixedly installed on the lower outer side of the gripper (6). An air extraction channel (9) is opened inside the gripper (6), and the air extraction channel (9) is connected to the negative pressure component.

2. The product gripping robot according to claim 1, characterized in that, The negative pressure assembly includes a hollow plate (12), and a plurality of through holes are equally spaced on the side of the hollow plate (12) away from the gripper (6), and a silicone ring (13) is fixedly installed at one end of each of the plurality of through holes.

3. The product gripping robot according to claim 1, characterized in that, The supporting assembly includes a servo motor (7), and a support frame (8) is fixedly installed at the output end of the servo motor (7).

4. The product gripping robot according to claim 3, characterized in that, The gripper (6) has a mounting groove (11) on its lower outer side, and the gripper (6) is fixedly mounted with the servo motor (7) through the mounting groove (11).

5. A product gripping robot according to claim 1, characterized in that, The top end of the air extraction channel (9) is fixedly connected to an air extraction pipe (10), which is a flexible hose.