Grabbing device of industrial robot
By employing a dual-claw structure and synchronous drive technology, the stability and adaptability issues of single-claw gripping devices have been resolved, enabling stable gripping of workpieces of different shapes and improving the flexibility of the production line.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-28
- Publication Date
- 2026-03-20
AI Technical Summary
Existing industrial robot gripping devices suffer from stability and adaptability issues due to insufficient gripping stability of individual mechanical claws and their inability to adapt to parts of different shapes.
A dual-claw structure was designed, with each set of claws connected by a central shaft. The dual-axis synchronous drive technology of the second drive unit is used to keep them parallel. The bottom of the claws is equipped with a fixed column and a pressure plate. The surface of the pressure plate is textured to enhance friction. The claws are designed to accommodate workpieces of different shapes and sizes.
It achieves uniform force distribution during clamping, improves the stability and flexibility of gripping, reduces the possibility of workpiece slippage, and enhances adaptability to workpieces of different shapes.
Smart Images

Figure CN224012368U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of gripping devices, specifically to a gripping device for an industrial robot. Background Technology
[0002] Industrial robots are high-end automated equipment integrating mechanical engineering, electronic technology, computer science, and artificial intelligence. They grasp objects using mechanical grippers. A Chinese patent (authorization announcement number CN 219114094 U) discloses a gripping device for an industrial robot. This patented technology uses gears, racks, slides, grooves, and clamping plates to grasp workpieces. It features a simple structure, high stability, and low failure rate, providing convenience to users. However, this design relies on a single mechanical gripper, which can only form a clamping surface on one side, leading to stability issues. Furthermore, the clamping plates are not adaptable to parts of different shapes, exhibiting weak adaptability. Therefore, those skilled in the art have provided a gripping device for industrial robots to address the problems mentioned in the background. Utility Model Content
[0003] To solve the above-mentioned technical problems, this utility model provides a gripping device for an industrial robot, including a robotic arm, a first drive component, a connecting arm, a gripper frame, a second drive component, a gripper, a pressure plate, a robotic gripper, a connecting rod, and a central shaft. The robotic arm is connected to the first drive component, the first drive component is connected to the gripper frame, the second drive component is installed at both ends of the gripper frame, the second drive component acts on the connecting rod, the connecting rod is connected to the robotic gripper, the central shaft is installed on the inner end of the robotic gripper, the gripper is installed at the bottom of the robotic gripper, and the pressure plate is installed on the gripper.
[0004] Preferably: A first connector is installed on the left side of the robotic arm, the first connector and the second connector are rotatably connected, the second connector is installed on the outer wall of the first drive component, a telescopic rod is installed inside the first drive component, a connecting arm is installed at the bottom of the telescopic rod, a third connector is installed on the lower side of the connecting arm, the third connector is connected to the fourth connector, and the fourth connector is installed on the upper side of the claw frame.
[0005] Preferably, the claw frame has a machine groove in the middle, and two sets of second drive components are installed in the machine groove, which act on the drive rods on the left and right sides respectively. The drive rods are connected to the second sleeve, and the second sleeve is installed between the limiting rings. The limiting rings are installed in the middle section of the connecting rod.
[0006] Preferably: the connecting rod is installed inside the second ear plate, the second ear plate is installed at the top of the machine claw, the first ear plate is installed on the inner side wall of the machine claw, the central shaft is rotatably installed inside the first ear plate, the first sleeve is installed on the outer side wall of the central shaft, two connecting plates are installed on the outer side wall of the first sleeve, and the other end of the connecting plate is installed to the side wall of the claw frame.
[0007] Preferably, a fixing post is installed at the bottom of the machine claw, and the side wall of the fixing post is provided with a gripper. The gripper and the fixing post are fixedly installed by fixing bolts.
[0008] Preferably, a first claw plate is installed on the upper side of the gripper, and a second claw plate is installed on the lower side of the gripper. The first and second claw plates are at a certain angle. Pressure plates are installed on the side walls of the first and second claw plates, and the surface of the pressure plates is provided with raised patterns.
[0009] The technical effects and advantages of this utility model are as follows:
[0010] 1. Two machine claws are installed on the connecting rod. The two machine claws form a group, and there is a group on each side. Each group of machine claws is rotatably connected by the central shaft. The two parallel machine claws are driven by the dual-axis synchronous drive technology of the second drive component to ensure that the two claws always remain absolutely parallel during the clamping process, and the clamping force is evenly distributed to avoid the workpiece from deforming or slipping due to uneven force, thus ensuring strong stability.
[0011] 2. A fixing post is installed at the bottom of the robotic gripper. The side wall of the fixing post has grippers, which are fixed to the fixing post using bolts. A first gripper plate is installed on the upper side of the grippers, and a second gripper plate is installed on the lower side. The first and second gripper plates form a certain angle. Pressure plates are installed on the side walls of the first and second gripper plates. The surface of the pressure plates has raised textures. This textured design increases the friction between the pressure plates and the object being gripped, thereby enhancing gripping stability. This design allows the pressure plates to better secure the object during gripping, reducing the possibility of slippage.
[0012] 3. The angle design of the grippers allows them to flexibly handle workpieces of different shapes and sizes, improving the flexibility of the production line. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the structure of a gripping device for an industrial robot provided in an embodiment of this application;
[0014] Figure 2 This is an exploded view of the gripping device for an industrial robot provided in an embodiment of this application. Figure 1 ;
[0015] Figure 3 This application provides an embodiment of a gripping device for an industrial robot. Figure 2 Enlarged schematic diagram of structure A;
[0016] Figure 4 This is an exploded view of the gripping device for an industrial robot provided in an embodiment of this application. Figure 2 ;
[0017] Figure 5 This application provides an embodiment of a gripping device for an industrial robot. Figure 4 An enlarged schematic diagram of the B structure.
[0018] In the diagram: 1. Robotic arm; 2. Drive component 1; 3. Connecting arm; 4. Claw frame; 5. Drive component 2; 6. Gripper; 7. Pressure plate; 8. Robotic claw; 9. Connecting rod; 10. Central shaft; 11. Fixing bolt; 101. Connector 1; 201. Connector 2; 202. Telescopic rod; 301. Connector 3; 401. Connector 4; 402. Machine slot; 403. Connecting plate; 404. Sleeve 1; 501. Drive rod; 502. Sleeve 2; 601. Claw plate 1; 602. Claw plate 2; 701. Raised pattern; 801. Ear plate 1; 802. Ear plate 2; 803. Fixing post; 901. Limiting ring. Detailed Implementation
[0019] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical applications of the present invention, and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for a particular purpose. Example
[0020] Please see Figures 1-5 This embodiment provides a gripping device for an industrial robot, including a robotic arm 1, a first drive component 2, a connecting arm 3, a gripper frame 4, a second drive component 5, a gripper 6, a pressure plate 7, a robotic gripper 8, a connecting rod 9, and a central shaft 10. The robotic arm 1 is connected to the first drive component 2, the first drive component 2 is connected to the gripper frame 4, the second drive component 5 is installed at both ends of the gripper frame 4, the second drive component 5 acts on the connecting rod 9, the connecting rod 9 is connected to the robotic gripper 8, the central shaft 10 is installed on the inner end of the robotic gripper 8, the gripper 6 is installed at the bottom of the robotic gripper 8, and the pressure plate 7 is installed on the gripper 6.
[0021] Specifically, connector 101 is installed on the left side of robotic arm 1. Connector 101 and connector 201 are rotatably connected. Connector 201 is installed on the outer wall of drive component 2. Telescopic rod 202 is installed inside drive component 2. Connecting arm 3 is installed at the bottom of telescopic rod 202. Connector 301 is installed on the lower side of connecting arm 3. Connector 301 is connected to connector 401. Connector 401 is installed on the upper side of gripper 4. Gutter 402 is provided in the middle of gripper 4. Two sets of drive components 5 are installed in groove 402, which act on drive rods 501 on the left and right sides respectively. Drive rods 501 are connected to sleeves 502. Sleeves 502 are installed between the two sleeves and the limiting rings 901. The limiting rings 901 are installed in the middle of connecting rod 9. Connecting rod 9 is installed to the... Inside the second ear plate 802, the second ear plate 802 is installed at the top of the machine gripper 8. The first ear plate 801 is installed on the inner side wall of the machine gripper 8. The central shaft 10 is rotatably installed inside the first ear plate 801. The first sleeve 404 is installed on the outer side wall of the central shaft 10. Two connecting plates 403 are installed on the outer side wall of the first sleeve 404. The other end of the connecting plate 403 is installed to the side wall of the gripper frame 4. The bottom position of the machine gripper 8 is installed with a fixing post 803. The side wall of the fixing post 803 is provided with a gripper 6. The gripper 6 and the fixing post 803 are fixedly installed by fixing bolts 11. The first gripper plate 601 is installed on the upper side of the gripper 6. The second gripper plate 602 is installed on the lower side of the gripper 6. The first gripper plate 601 and the second gripper plate 602 form a certain angle. The side walls of the first gripper plate 601 and the second gripper plate 602 are installed with pressure plates 7. The surface of the pressure plates 7 is provided with raised textures 701.
[0022] The working principle of this utility model is as follows:
[0023] In a gripping device for an industrial robot, two robotic claws 8 are mounted on a connecting rod 9. The two robotic claws 8 form a group, and there is a group on each side. Each group of robotic claws 8 is rotatably connected by a central shaft 10. The two parallel robotic claws 8 are driven by the dual-axis synchronous drive technology of the second drive component 5 to ensure that the two claws remain absolutely parallel during the gripping process, and the clamping force is evenly distributed, preventing the workpiece from deforming or slipping due to uneven force, and ensuring strong stability.
[0024] A fixing post 803 is installed at the bottom of the machine gripper 8. A gripper 6 is located on the side wall of the fixing post 803. The gripper 6 and the fixing post 803 are fixedly installed by fixing bolts 11. A first gripper plate 601 is installed on the upper side of the gripper 6, and a second gripper plate 602 is installed on the lower side of the gripper 6. The first gripper plate 601 and the second gripper plate 602 form a certain angle. A pressure plate 7 is installed on the side wall of the first gripper plate 601 and the second gripper plate 602. The surface of the pressure plate 7 has raised textures 701. The raised textures 701 increase the friction between the pressure plate 7 and the object being gripped, thereby enhancing the stability of the gripping. This design allows the pressure plate 7 to better fix the object during the gripping process, reducing the possibility of slippage. The angle design of the gripper 6 allows it to flexibly handle workpieces of different shapes and sizes, improving the flexibility of the production line.
[0025] Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of this utility model without creative effort should fall within the protection scope of this utility model. Structures, devices, and operating methods not specifically described and explained in this utility model, unless otherwise specified or limited, shall be implemented according to conventional means in the art.
Claims
1. A gripping device for an industrial robot, characterized in that, The system includes a robotic arm (1), a first drive component (2), a connecting arm (3), a claw frame (4), a second drive component (5), a gripper (6), a pressure plate (7), a robotic gripper (8), a connecting rod (9), and a central shaft (10). The robotic arm (1) is connected to the first drive component (2), the first drive component (2) is connected to the gripper frame (4), the second drive component (5) is installed at both ends of the gripper frame (4), the second drive component (5) acts on the connecting rod (9), the connecting rod (9) is connected to the robotic gripper (8), the central shaft (10) is installed on the inner end of the robotic gripper (8), the gripper (6) is installed at the bottom of the robotic gripper (8), and the pressure plate (7) is installed on the gripper (6).
2. The gripping device for an industrial robot according to claim 1, characterized in that, The first connector (101) is installed on the left side of the robotic arm (1). The first connector (101) and the second connector (201) are rotatably connected. The second connector (201) is installed on the outer wall of the first drive component (2). The telescopic rod (202) is installed inside the first drive component (2). The connecting arm (3) is installed at the bottom of the telescopic rod (202). The third connector (301) is installed on the lower side of the connecting arm (3). The third connector (301) is connected to the fourth connector (401). The fourth connector (401) is installed on the upper side of the claw frame (4).
3. The gripping device for an industrial robot according to claim 2, characterized in that, The claw frame (4) has a machine slot (402) in the middle position. Two sets of No. 2 drive components (5) are installed in the machine slot (402) and act on the drive rods (501) on the left and right sides respectively.
4. The gripping device for an industrial robot according to claim 3, characterized in that, The drive rod (501) is connected to the second sleeve (502), the second sleeve (502) is installed between the limiting ring (901), and the limiting ring (901) is installed at the middle section of the connecting rod (9).
5. The gripping device for an industrial robot according to claim 4, characterized in that, The connecting rod (9) is installed inside the second ear plate (802), the second ear plate (802) is installed at the top of the machine claw (8), the first ear plate (801) is installed on the inner side wall of the machine claw (8), and the central shaft (10) is rotatably installed inside the first ear plate (801).
6. The gripping device for an industrial robot according to claim 5, characterized in that, A first sleeve (404) is installed on the outer wall of the central shaft (10), and two connecting plates (403) are installed on the outer wall of the first sleeve (404). The other end of the connecting plate (403) is installed to the side wall of the claw frame (4).
7. The gripping device for an industrial robot according to claim 5, characterized in that, The bottom of the machine claw (8) is equipped with a fixing post (803), and the side wall of the fixing post (803) is provided with a gripper (6). The gripper (6) and the fixing post (803) are fixedly installed by a fixing bolt (11).
8. The gripping device for an industrial robot according to claim 7, characterized in that, The first claw plate (601) is installed on the upper side of the gripper (6), and the second claw plate (602) is installed on the lower side of the gripper (6). The first claw plate (601) and the second claw plate (602) form a certain angle. The pressure plate (7) is installed on the side wall of the first claw plate (601) and the second claw plate (602). The surface of the pressure plate (7) is provided with raised texture (701).
Citation Information
Patent Citations
Grabbing device of industrial robot
CN219114094U