Mechanical hand for easy access
By designing a robotic arm with disassembly and lifting mechanisms, the problem of cumbersome replacement of robotic grippers was solved, enabling rapid replacement and height self-adaptation of robotic grippers, thereby improving the working efficiency and process smoothness of the robotic arm.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGBO XUNFENG ROBOT TECH CO LTD
- Filing Date
- 2025-07-21
- Publication Date
- 2026-07-07
AI Technical Summary
The existing robotic arms are cumbersome to operate when changing the robotic grippers, which affects work efficiency. They also require manual judgment and tool disassembly, making it difficult to adapt to the gripping needs of materials with different shapes, sizes and weights.
A robotic arm including a disassembly mechanism and a lifting mechanism was designed. The rotating plate is driven by a rotating shaft to pull the plate and the locking block to retract or extend. The mechanical claw is inserted into the connecting shell with the mating plate on the top of the mechanical claw. The mechanical claw can be quickly disassembled and assembled without tools. The height of the connecting shell can be adjusted by a cylinder to adapt to material handling scenarios at different heights.
It enables rapid replacement and height self-adaptation of the robotic gripper, improves work efficiency when switching between multiple working conditions, avoids production line stagnation caused by cumbersome replacement, and enhances the smoothness and continuity of the workflow.
Smart Images
Figure CN224464682U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of robotic arm technology, specifically to a robotic arm that facilitates material handling. Background Technology
[0002] In the fields of industrial automation production, warehousing and logistics, and intelligent equipment, robotic arms are core devices for material gripping and handling, and their ease of material handling directly affects production efficiency and cost control. In existing technologies, robotic arms typically use end effectors (such as robotic grippers) to grip materials. However, for materials of different shapes, sizes, and weights (such as irregularly shaped workpieces, bagged materials, and precision components), it is necessary to frequently change suitable robotic grippers to meet gripping requirements.
[0003] Traditional robotic arms have common defects in their gripper replacement structures: when switching material types, the grippers are not convenient to pick up materials due to the different materials, and manual judgment and replacement of the corresponding grippers are required. Furthermore, the connection between the grippers and the robotic arm is mostly a rigid connection method such as bolt fixing or snap-fit, which requires tools to disassemble and install when replacement is needed. The operation process is cumbersome and affects work efficiency. Utility Model Content
[0004] To address the problems mentioned in the background art, the purpose of this utility model is to provide a convenient robotic arm for picking up materials, which has the advantage of high work efficiency and solves the problem of low work efficiency of robotic arms.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a robotic arm for convenient material handling, comprising:
[0006] A robotic arm includes a connecting base, a bottom robotic arm fixedly connected to the top of the connecting base, a crossbeam robotic arm rotatably connected to the top of the bottom robotic arm via a rotating shaft, an electric telescopic rod rotatably connected to the top of the connecting base via a rotating shaft, the output end of the electric telescopic rod being slidably connected to the bottom of the crossbeam robotic arm via a rotating shaft, a sliding block, and a sliding groove, and a robotic claw being provided on the right side of the bottom of the crossbeam robotic arm.
[0007] A lifting mechanism is located at the bottom right side of the crossbeam arm;
[0008] The disassembly mechanism includes a rotating shaft, a rotating plate fixedly connected to the surface of the rotating shaft, pull plates movably connected to both sides of the front of the rotating plate via the rotating shaft, a pulling plate movably connected to the outer side of the pull plate via a connecting block, a locking block fixedly connected to the outer side of the pulling plate, and mating plates fixedly connected to both sides of the top of the mechanical claw.
[0009] In a preferred embodiment of this utility model, the lifting mechanism includes a connecting block, a cylinder is fixedly connected to the bottom of the connecting block, a connecting shell is provided at the output end of the cylinder, the top of the mating plate penetrates the connecting shell and extends into the interior of the connecting shell, the back of the rotating shaft penetrates the connecting shell and extends into the interior of the connecting shell, and the outer side of the locking block penetrates the connecting shell and extends into the interior of the mating plate.
[0010] As a preferred embodiment of this utility model, a reinforcing plate is fixedly connected to the top of the connecting shell by bolts and nuts, and the interior of the reinforcing plate is welded to the output end of the cylinder.
[0011] As a preferred embodiment of this utility model, a return spring is fixedly connected to the inner side of the pull plate, and a horizontal plate is fixedly connected to the inner side of the return spring. The side of the horizontal plate closest to the connecting shell is fixedly connected to the connecting shell.
[0012] In a preferred embodiment of this invention, sliders are fixedly connected to both the top and bottom of the pull plate, and grooves are provided at both the top and bottom of the inner wall of the connecting shell, with the grooves slidably connected to the sliders.
[0013] In a preferred embodiment of this invention, the back of the rotating shaft is fixedly connected to the back of the inner wall of the connecting shell via a bearing, and mating holes are provided on both sides of the top of the connecting shell, with the interior of the mating holes slidably connected to the surface of the mating plate.
[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0015] 1. This utility model drives the rotating plate to rotate through the rotating shaft of the disassembly mechanism, which drives the pull plate linkage block to retract or extend synchronously. With the mechanical claw's top mating plate inserted into the connecting shell's mating hole, the mechanical claw and the crossbeam arm can be quickly disassembled and assembled without tools, significantly improving the work efficiency when switching between multiple working conditions, avoiding production line stagnation caused by cumbersome replacement, thus facilitating the robot arm to pick up materials and improving work efficiency.
[0016] 2. By setting up a lifting mechanism, this utility model can adapt to material picking scenarios at different heights, such as high-level material racks and deep cavities of material boxes. The cylinder can automatically adjust the height of the connecting shell according to the material position, so that the mechanical claw can complete the height adjustment without relying on manual assistance. The height adaptive function significantly improves the smoothness of the workflow.
[0017] 3. By setting a reinforcing plate, this utility model enhances the rigid connection between the connecting shell and the lifting mechanism, so that the mechanical claw maintains a stable posture when picking up materials at high speed or when the load changes, reducing the debugging time after replacing the mechanical claw 105 due to loose connection, and indirectly improving the continuity of the overall material picking operation. Attached Figure Description
[0018] Figure 1This is a structural diagram of the present utility model;
[0019] Figure 2 This utility model Figure 1 A partial cross-sectional structural diagram;
[0020] Figure 3 This utility model Figure 1 A three-dimensional structural diagram of the disassembly mechanism;
[0021] Figure 4 This utility model Figure 1 A three-dimensional structural diagram of the lifting mechanism.
[0022] In the diagram: 1. Robotic arm; 101. Connecting seat; 102. Bottom arm; 103. Crossbeam arm; 104. Electric telescopic rod; 105. Mechanical claw; 2. Lifting mechanism; 21. Connecting block; 22. Cylinder; 23. Connecting shell; 3. Disassembly mechanism; 31. Rotating shaft; 32. Rotating plate; 33. Pulling plate; 34. Pulling plate; 35. Locking block; 36. Mating plate; 4. Reinforcing plate; 5. Return spring; 6. Horizontal plate; 7. Slider; 8. Slide groove; 9. Mating hole. Detailed Implementation
[0023] 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 protection scope of the present utility model.
[0024] like Figures 1 to 4 As shown, the present invention provides a convenient material handling robotic arm, comprising:
[0025] Robotic arm 1 includes a connecting base 101. A bottom arm 102 is fixedly connected to the top of the connecting base 101. A crossbeam arm 103 is rotatably connected to the top of the bottom arm 102 via a rotating shaft. An electric telescopic rod 104 is rotatably connected to the top of the connecting base 101 via a rotating shaft. The output end of the electric telescopic rod 104 is slidably connected to the bottom of the crossbeam arm 103 via a rotating shaft, a sliding block, and a sliding groove. A mechanical claw 105 is provided on the right side of the bottom of the crossbeam arm 103.
[0026] Lifting mechanism 2 is located at the bottom right side of the crossbeam arm 103;
[0027] The disassembly mechanism 3 includes a rotating shaft 31, a rotating plate 32 fixedly connected to the surface of the rotating shaft 31, a pull plate 33 movably connected to both sides of the front of the rotating plate 32 via a rotating shaft, a pull plate 34 movably connected to the outer side of the pull plate 33 via a connecting block 21, a locking block 35 fixedly connected to the outer side of the pull plate 34, and a mating plate 36 fixedly connected to both sides of the top of the mechanical claw 105.
[0028] refer to Figure 4 The lifting mechanism 2 includes a connecting block 21, a cylinder 22 is fixedly connected to the bottom of the connecting block 21, a connecting shell 23 is provided at the output end of the cylinder 22, the top of the mating plate 36 passes through the connecting shell 23 and extends into the interior of the connecting shell 23, the back of the rotating shaft 31 passes through the connecting shell 23 and extends into the interior of the connecting shell 23, and the outer side of the locking block 35 passes through the connecting shell 23 and extends into the interior of the mating plate 36.
[0029] As a technical optimization of this utility model, by setting up the lifting mechanism 2, it can adapt to material picking scenarios of different heights, such as high-level material racks and deep cavities of material boxes. The cylinder 22 can automatically adjust the height of the connecting shell 23 according to the material position, so that the mechanical claw 105 can complete the height adjustment without relying on manual assistance. The height adaptive function significantly improves the smoothness of the workflow.
[0030] refer to Figure 4 The top of the connecting shell 23 is fixedly connected to the reinforcing plate 4 by bolts and nuts, and the interior of the reinforcing plate 4 is welded to the output end of the cylinder 22.
[0031] As a technical optimization of this utility model, by setting a reinforcing plate 4, the rigid connection between the connecting shell 23 and the lifting mechanism 2 is enhanced, so that the mechanical claw 105 maintains a stable posture when picking up materials at high speed or when the load changes, reducing the debugging time after replacing the mechanical claw 105 due to loose connection, and indirectly improving the continuity of the overall material picking operation.
[0032] refer to Figure 3 A return spring 5 is fixedly connected to the inner side of the pull plate 34, and a horizontal plate 6 is fixedly connected to the inner side of the return spring 5. The side of the horizontal plate 6 closest to the connecting shell 23 is fixedly connected to the connecting shell 23.
[0033] As a technical optimization of this utility model, by setting a reset spring 5 and a horizontal plate 6, the pull plate 34 is automatically reset after the locking block 35 locks the mechanical claw 105 and maintains a constant clamping force, avoiding the problem of the locking block 35 loosening due to vibration in the traditional quick-change structure, eliminating the manual inspection step after replacement, improving the connection reliability of the mechanical claw 105 while reducing maintenance time and ensuring material handling efficiency.
[0034] refer to Figure 3The top and bottom of the pull plate 34 are fixedly connected to sliders 7, and the top and bottom of the inner wall of the connecting shell 23 are provided with grooves 8, which are slidably connected to sliders 7.
[0035] As a technical optimization of this utility model, by setting the slider 7 and the slide groove 8, the movement of the pull plate 34 during the opening and closing of the locking block 35 is more stable and smooth, eliminating the operation jam caused by the frictional resistance of the parts. With the linkage design of the disassembly mechanism 3, the mechanical claw 105 can achieve a rapid response to the replacement action, further optimizing the efficiency of the replacement process.
[0036] refer to Figure 4 The back of the rotating shaft 31 is fixedly connected to the back of the inner wall of the connecting shell 23 via a bearing. Both sides of the top of the connecting shell 23 are provided with mating holes 9, and the interior of the mating holes 9 is slidably connected to the surface of the mating plate 36.
[0037] As a technical optimization of this utility model, by setting the mating hole 9, the mating plate 36 can be positioned when the mechanical claw 105 is installed, avoiding the problem of repeated adjustment caused by positioning deviation in the traditional structure. This allows different types of mechanical claws 105 to be put into use without additional calibration after replacement, greatly shortening the working condition switching time and improving the material handling efficiency in multi-variety production.
[0038] The working principle and usage process of this utility model are as follows: In use, the operator first activates the cylinder 22 of the lifting mechanism 2. The output end of the cylinder 22 drives the connecting shell 23 to move up and down along the Z-axis. The position of the connecting shell 23 is adjusted according to the specifications of the mechanical claw 105 to be replaced or the height of the material handling scenario, aligning the mating hole 9 with the mating plate 36 of the spare mechanical claw 105. Then, the operator manually rotates the rotating shaft 31, causing the rotating plate 32 to rotate synchronously with the rotating shaft 31. The rotating plate 32 pulls the inner pull plate 33 towards the center via the rotating shaft, and through the connecting block 21, drives the outer pull plate 34 to overcome the spring force of the return spring 5 and move inward, causing the locking block 35 to disengage from the slot of the mating plate 36. At this point, the old mechanical claw 105 can be removed from below the connecting shell 23. Then, the mating plate 36 of the new mechanical claw 105 is aligned with the mating hole 9 at the top of the connecting shell 23 and inserted until the mating plate 36 completely penetrates the connecting shell 23 and reaches the locking block 35. Using the area; rotate the rotating shaft 31 in the opposite direction or release the drive device, the reset spring 5 pushes the pulling plate 34 to move outward, the locking block 35 extends with the pulling plate 34 and is embedded in the slot of the mating plate 36, completing the locking of the mechanical claw 105. After the mechanical claw 105 is replaced, the cylinder 22 adjusts the connecting shell 23 to a suitable height according to the material picking requirements. The robotic arm 1 drives the mechanical claw 105 to reach the material location through the coordinated movement of the connecting seat 101, the bottom arm 102, the crossbeam arm 103 and the electric telescopic rod 104. When picking up materials, if it is a rigid material, the mechanical claw 105 directly grabs it through the stable connection locked by the locking block 35; if it is necessary to adjust the grabbing height, the electric telescopic rod 104 can adjust the pitch angle of the crossbeam arm 103 in real time, and cooperate with the lifting and lowering movement of the cylinder 22 to achieve accurate positioning of materials in different positions such as the upper level of the material rack and the deep cavity of the material box, thereby facilitating the mechanical claw 105 to pick up materials.
[0039] In summary, this convenient material-picking robot arm drives the rotating plate 32 to rotate via the rotating shaft 31 of the disassembly mechanism 3, which in turn causes the pulling plate 34 and the linkage block 35 to retract or extend synchronously. In conjunction with the mechanical claw 105, the top mating plate 36 is inserted into the mating hole 9 of the connecting shell 23. This allows for quick assembly and disassembly of the mechanical claw 105 and the crossbeam arm 103 without the need for tools, significantly improving work efficiency during multi-condition switching and avoiding production line stagnation caused by cumbersome replacements. This facilitates material picking by the robot arm and improves work efficiency.
[0040] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A robotic arm for convenient material handling, characterized in that, include: A robotic arm (1) includes a connecting seat (101), a bottom arm (102) is fixedly connected to the top of the connecting seat (101), a beam arm (103) is rotatably connected to the top of the bottom arm (102) via a rotating shaft, an electric telescopic rod (104) is rotatably connected to the top of the connecting seat (101) via a rotating shaft, the output end of the electric telescopic rod (104) is slidably connected to the bottom of the beam arm (103) via a rotating shaft, a sliding block and a sliding groove, and a mechanical claw (105) is provided on the right side of the bottom of the beam arm (103). Lifting mechanism (2), which is located at the bottom right side of the beam arm (103); The disassembly mechanism (3) includes a rotating shaft (31), a rotating plate (32) is fixedly connected to the surface of the rotating shaft (31), and a pull plate (33) is movably connected to both sides of the front of the rotating plate (32) through a rotating shaft. A pull plate (34) is movably connected to the outer side of the pull plate (33) through a connecting block. A locking block (35) is fixedly connected to the outer side of the pull plate (34). A mating plate (36) is fixedly connected to both sides of the top of the mechanical claw (105).
2. The robotic arm for convenient material handling according to claim 1, characterized in that: The lifting mechanism (2) includes a connecting block (21), a cylinder (22) is fixedly connected to the bottom of the connecting block (21), a connecting shell (23) is provided at the output end of the cylinder (22), the top of the mating plate (36) penetrates the connecting shell (23) and extends into the interior of the connecting shell (23), the back of the rotating shaft (31) penetrates the connecting shell (23) and extends into the interior of the connecting shell (23), and the outer side of the locking block (35) penetrates the connecting shell (23) and extends into the interior of the mating plate (36).
3. The robotic arm for convenient material handling according to claim 2, characterized in that: The top of the connecting shell (23) is fixedly connected to a reinforcing plate (4) by bolts and nuts, and the interior of the reinforcing plate (4) is welded to the output end of the cylinder (22).
4. The robotic arm for convenient material handling according to claim 3, characterized in that: A return spring (5) is fixedly connected to the inner side of the pull plate (34), and a horizontal plate (6) is fixedly connected to the inner side of the return spring (5). The side of the horizontal plate (6) close to the connecting shell (23) is fixedly connected to the connecting shell (23).
5. A robotic arm for convenient material handling according to claim 4, characterized in that: The top and bottom of the pull plate (34) are fixedly connected to sliders (7), and the top and bottom of the inner wall of the connecting shell (23) are provided with grooves (8), which are slidably connected to the sliders (7).
6. A robotic arm for convenient material handling according to claim 5, characterized in that: The back of the rotating shaft (31) is fixedly connected to the back of the inner wall of the connecting shell (23) by a bearing. Both sides of the top of the connecting shell (23) are provided with mating holes (9), and the interior of the mating holes (9) is slidably connected to the surface of the mating plate (36).