Multifunctional small mechanical arm

Abstract

A multifunctional small mechanical arm comprises a base, a connecting seat is fixed to the top of the base, a rotating plate is rotationally connected to the top of the connecting seat, two fixing seats are fixed to the top of the rotating plate, large arms are rotationally connected between the two fixing seats, a small arm is rotationally connected between the large arms, and a telescopic structure is arranged on the inner side of the small arm and comprises a fixing plate. The fixed plate is fixed to the inner side of the small arm and rotationally connected with a lead screw, the outer side of the lead screw is in threaded connection with a movable plate, and a U-shaped plate is fixed to one side of the movable plate. The mechanical arm has the technical effects that the second bevel gear is driven by the fourth motor to rotate, so that the first bevel gear is driven to rotate in an engaged manner, the movable plate on the outer side of the lead screw is driven to move, the U-shaped plate is driven to move along with the movable plate, corresponding telescopic adjustment is performed according to the machining position condition, and the use effect of the mechanical arm is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical arms, in particular to a multifunctional small mechanical arm. Background Art

[0002] A robotic arm is an automated device that mimics certain movements and functions of a human hand and arm, used to grasp, move objects, or operate tools according to a fixed program. It can be programmed to perform a variety of tasks, combining the advantages of both human and robotic devices in terms of structure and performance. The robotic arm is the earliest industrial robot and also the first modern robot. It can replace heavy human labor to achieve mechanization and automation of production, and can operate in hazardous environments to protect human safety. Therefore, it is widely used in machinery manufacturing, metallurgy, electronics, light industry, and atomic energy.

[0003] The current publication number is CN116237974A, which is a multifunctional small robotic arm. The multifunctional small robotic arm includes a base and a clamping device. The top outer wall of the base is fixedly connected to a connecting seat, and the inner wall of the connecting seat is rotatably connected to a connecting shaft. One end of the connecting shaft is fixedly connected to a rotating plate, and two bases are symmetrically arranged on the top outer wall of the rotating plate, and a large arm is arranged between the outer walls of the bases.

[0004] Although there are many benefits in the above scheme, there are also the following defects: during the use of the robotic arm, the robotic arm is usually fixed in one position for use. In actual operation, the position of the clamping device cannot be adjusted accordingly according to the requirements of the processing position, resulting in certain limitations in use and the effect of use is not very good. Utility Model Content

[0005] The technical problem to be solved by the present invention is to solve the problem in the prior art that, during actual operation, the position of the clamping device cannot be telescopically adjusted according to the requirements of the processing position, resulting in certain limitations in use and poor results.

[0006] The technical solution of the utility model is specifically as follows:

[0007] A multifunctional small robotic arm comprises a base, a connecting seat is fixed on the top of the base, a rotating plate is rotatably connected to the top of the connecting seat, two fixing seats are fixed on the top of the rotating plate, a large arm is rotatably connected between the two fixing seats, a small arm is rotatably connected between the large arms, a telescopic structure is provided on the inner side of the small arm, the telescopic structure comprises a fixing plate, the fixing plate is fixed on the inner side of the small arm, the fixing plate is rotatably connected to a screw rod, the outer side of the screw rod is threadedly connected to a moving plate, a U-shaped plate is fixed on one side of the moving plate; the moving plate is provided on the inner side of the small arm and slides with the small arm Contact, one side of the U-shaped plate passes through the forearm and is in sliding contact with the forearm; one end of the screw rod passes through the fixed plate and is fixed with the No. 1 bevel gear, the inner side of the forearm is rotatably connected to the No. 2 bevel gear, the No. 1 bevel gear and the No. 2 bevel gear are meshed and connected, one side of the forearm is fixed with the No. 4 motor, the output end of the No. 4 motor passes through the forearm and is fixedly connected to the No. 2 bevel gear; one side of the U-shaped plate is rotatably connected to the rotating seat, both sides of the rotating seat are rotatably connected to the No. 1 connecting plate, and a connecting block is rotatably connected between the two No. 1 connecting plates, and a clamping device is provided at the bottom of the connecting block.

[0008] A fixed structure is provided between the connecting block and the clamping device, and the fixed structure includes two connecting frames and two slides. The two connecting frames are fixed on the top of the clamping device, and the two slides are respectively fixed on both sides of the connecting block. The slides can extend into the interior of the connecting frame. One side of the connecting frame is fixed with one end of two reset springs, and the other end of the two reset springs is fixed with a No. 2 connecting plate, one side of the No. 2 connecting plate is fixed with a pull ring, and the other side of the No. 2 connecting plate is fixed with a limiting plate, and one side of the limiting plate passes through the connecting frame and is in sliding contact with the connecting frame.

[0009] A camera is fixed on one side of the connecting block.

[0010] A No. 1 motor is fixed on one side of one of the fixing seats, and an output end of the No. 1 motor passes through one of the fixing seats and is fixedly connected to the upper arm.

[0011] A No. 3 motor is fixed on one side of the upper arm, and the output end of the No. 3 motor passes through the upper arm and is fixedly connected to the lower arm.

[0012] A No. 2 motor is fixed on the inner side of the U-shaped plate, and an output end of the No. 2 motor passes through the U-shaped plate and is fixedly connected to the rotating seat.

[0013] There is a No. 5 motor on one side of the connecting plate, and the output end of the No. 5 motor passes through the connecting plate 9 and is fixedly connected to the connecting block 10.

[0014] Compared with the existing technology, the technical effect of the present invention is that the present invention drives the No. 2 bevel gear to rotate through the No. 4 motor, thereby driving the No. 1 bevel gear to engage and rotate, driving the screw rod to rotate accordingly, thereby driving the movable plate outside the screw rod to move, and driving the U-shaped plate to move accordingly to perform corresponding telescopic adjustment according to the processing position, thereby improving the use effect of the robotic arm. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0016] Figure 2 This is a demonstration diagram of the folded state.

[0017] Figure 3 It is a cross-sectional schematic diagram of the telescopic structure.

[0018] Figure 4 It is a schematic diagram of the fixed structure.

[0019] Numbers in the figure: 1. Base; 2. Connecting seat; 3. Rotating plate; 4. Fixed seat; 5. Motor No. 1; 6. Upper arm; 7. Lower arm; 701. Motor No. 2; 702. Rotating seat; 8. Motor No. 3; 9. Connecting plate No. 1; 10. Connecting block; 11. Camera; 12. Clamping device; 13. Fixed plate; 14. Screw; 15. Moving plate; 16. U-shaped plate; 17. Bevel gear No. 1; 18. Bevel gear No. 2; 19. Motor No. 4; 20. Connecting frame; 21. Slide plate; 22. Return spring; 23. Connecting plate No. 2; 24. Pull ring; 25. Limit plate. DETAILED DESCRIPTION

[0020] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments thereof.

[0021] like Figure 1 - Figure 4 As shown, a multifunctional small robotic arm includes a base 1, a connecting base 2 is fixed on the top of the base 1, a rotating plate 3 is rotatably connected to the top of the connecting base 2, two fixed bases 4 are fixed on the top of the rotating plate 3, a large arm 6 is rotatably connected between the two fixed bases 4, a small arm 7 is rotatably connected between the large arms 6, and a telescopic structure is provided on the inner side of the small arm 7.

[0022] The telescopic structure includes a fixed plate 13 fixed to the inner side of the small arm 7. The fixed plate 13 is rotatably connected to a screw rod 14. The outer side of the screw rod 14 is threadedly connected to a movable plate 15. A U-shaped plate 16 is fixed to one side of the movable plate 15.

[0023] The movable plate 15 is disposed on the inner side of the small arm 7 and is in sliding contact with the small arm 7 . One side of the U-shaped plate 16 passes through the small arm 7 and is in sliding contact with the small arm 7 .

[0024] One end of the screw rod 14 passes through the fixed plate 13 and is fixed with the No. 1 bevel gear 17. The inner side of the small arm 7 is rotatably connected to the No. 2 bevel gear 18. The No. 1 bevel gear 17 and the No. 2 bevel gear 18 are meshed and connected. A No. 4 motor 19 is fixed on one side of the small arm 7. The output end of the No. 4 motor 19 passes through the small arm 7 and is fixedly connected to the No. 2 bevel gear 18.

[0025] One side of the U-shaped plate 16 is rotatably connected to a rotating seat 702, and both sides of the rotating seat 702 are rotatably connected to a No. 1 connecting plate 9. A connecting block 10 is rotatably connected between the two No. 1 connecting plates 9, and a camera 11 is fixed to one side of the connecting block 10. A clamping device 12 is provided at the bottom of the connecting block 10.

[0026] As for the structural technology of the clamping device 12, the specific structure of a multifunctional small-sized mechanical arm with publication number CN116237974A can be adopted.

[0027] A fixed structure is provided between the connecting block 10 and the clamping device 12, and the fixed structure includes two connecting frames 20 and two slides 21. The two connecting frames 20 are fixed on the top of the clamping device 12, and the two slides 21 are respectively fixed on both sides of the connecting block 10. The slides 21 can extend into the interior of the connecting frame 20. One side of the connecting frame 20 is fixed with one end of two return springs 22, and the other end of the two return springs 22 is fixed with a No. 2 connecting plate 23, one side of the No. 2 connecting plate 23 is fixed with a pull ring 24, and the other side of the No. 2 connecting plate 23 is fixed with a limiting plate 25, and one side of the limiting plate 25 passes through the connecting frame 20 and is in sliding contact with the connecting frame 20.

[0028] A No. 1 motor 5 is fixed to one side of one of the fixing seats 4 , and an output end of the No. 1 motor 5 passes through one of the fixing seats 4 and is fixedly connected to the upper arm 6 , providing power for the rotation between the fixing seat 4 and the upper arm 6 .

[0029] A No. 3 motor 8 is fixed to one side of the upper arm 6. The output end of the No. 3 motor 8 passes through the upper arm 6 and is fixedly connected to the lower arm 7, providing power for the rotation between the upper arm 6 and the lower arm 7.

[0030] A second motor 701 is fixed on the inner side of the U-shaped plate 16 . The output end of the second motor 701 passes through the U-shaped plate 16 and is fixedly connected to the rotating seat 702 , providing power for the rotation between the U-shaped plate 16 and the rotating seat 702 .

[0031] There is a No. 5 motor (not shown in the figure) on one side of the connecting plate 9. The output end of the No. 5 motor passes through the connecting plate 9 and is fixedly connected to the connecting block 10, providing power for the rotation between the connecting plate 9 and the connecting block 10.

[0032] Its working principle is:

[0033] It should be noted that the present invention is a multifunctional small robotic arm. When processing different positions, the No. 4 motor 19 is started. The model of the No. 4 motor 19 is not described in detail, and is subject to the adapted equipment. The No. 4 motor 19 drives the No. 2 bevel gear 18 to rotate, thereby driving the No. 1 bevel gear 17 to engage and rotate, thereby driving the screw rod 14 to rotate accordingly, thereby driving the movable plate 15 outside the screw rod 14 to move, thereby driving the U-shaped plate 16 to move accordingly to perform corresponding telescopic adjustment according to the processing position, thereby improving the use effect of the robotic arm;

[0034] When the robotic arm needs to be transported, the two pull rings 24 are pulled, and the pull rings 24 will drive the No. 2 connecting plate 23 and the limiting plate 25 on one side to move, so that the limiting plate 25 cancels the limiting effect on the slide 21. At this time, the clamping device 12 and the slides 21 on both sides thereof can be slid out and removed from the two connecting frames 20, and then the No. 1 motor 5 and the No. 3 motor 8 are started respectively. The models of the No. 1 motor 5 and the No. 3 motor 8 are not described in detail, and are based on the adapted equipment to fold the robotic arm as a whole. On the one hand, it is convenient for maintenance and replacement of the clamping device 12, and on the other hand, it can reduce the space occupied by the robotic arm, making it easier to transport the robotic arm.

[0035] Features of this application:

[0036] S1. This design has four motors that drive the rotation movement, which can adjust the posture of the robotic arm and facilitate clamping and transportation.

[0037] S2. The forearm of this design is retractable, which not only makes it convenient to clamp objects, but also can be folded so that the forearm can be stored in the space wrapped by the upper arm, making it convenient for transportation.

[0038] For other contents, please refer to the prior art.

[0039] The above description is only the preferred embodiment of the present invention. It should be pointed out that those skilled in the art can make several changes and improvements without departing from the overall concept of the present invention, and these should also be regarded as the scope of protection of the present invention.

Claims

1. A multifunctional small robotic arm, comprising a base (1), a connecting base (2) fixed on the top of the base (1), a rotating plate (3) rotatably connected to the top of the connecting base (2), two fixed bases (4) fixed on the top of the rotating plate (3), a large arm (6) rotatably connected between the two fixed bases (4), and a small arm (7) rotatably connected between the large arms (6), characterized in that: A telescopic structure is provided on the inner side of the small arm (7), and the telescopic structure includes a fixed plate (13), the fixed plate (13) is fixed on the inner side of the small arm (7), the fixed plate (13) is rotatably connected to a screw rod (14), the outer side of the screw rod (14) is threadedly connected to a movable plate (15), and a U-shaped plate (16) is fixed to one side of the movable plate (15); The movable plate (15) is arranged on the inner side of the small arm (7) and is in sliding contact with the small arm (7); one side of the U-shaped plate (16) passes through the small arm (7) and is in sliding contact with the small arm (7); One end of the screw rod (14) passes through the fixed plate (13) and is fixed with a No. 1 bevel gear (17). The inner side of the small arm (7) is rotatably connected to the No. 2 bevel gear (18). The No. 1 bevel gear (17) and the No. 2 bevel gear (18) are meshed and connected. A No. 4 motor (19) is fixed to one side of the small arm (7). The output end of the No. 4 motor (19) passes through the small arm (7) and is fixedly connected to the No. 2 bevel gear (18). One side of the U-shaped plate (16) is rotatably connected to a rotating seat (702), both sides of the rotating seat (702) are rotatably connected to a No. 1 connecting plate (9), a connecting block (10) is rotatably connected between the two No. 1 connecting plates (9), and a clamping device (12) is provided at the bottom of the connecting block (10).

2. The multifunctional small robotic arm according to claim 1, wherein: A fixed structure is provided between the connecting block (10) and the clamping device (12), and the fixed structure includes two connecting frames (20) and two slides (21). The two connecting frames (20) are fixed on the top of the clamping device (12), and the two slides (21) are respectively fixed on both sides of the connecting block (10). The slides (21) can extend into the interior of the connecting frame (20). One end of two return springs (22) is fixed to one side of the connecting frame (20), and the other end of the two return springs (22) is fixed to a second connecting plate (23). A pull ring (24) is fixed to one side of the second connecting plate (23), and a limiting plate (25) is fixed to the other side of the second connecting plate (23). One side of the limiting plate (25) passes through the connecting frame (20) and is in sliding contact with the connecting frame (20).

3. The multifunctional small robotic arm according to claim 2, wherein: A camera (11) is fixed to one side of the connecting block (10).

4. The multifunctional small robotic arm according to claim 3, wherein: A No. 1 motor (5) is fixed to one side of one of the fixing seats (4), and an output end of the No. 1 motor (5) passes through one of the fixing seats (4) and is fixedly connected to the upper arm (6).

5. The multifunctional small robotic arm according to claim 4, characterized in that: A third motor (8) is fixed to one side of the upper arm (6), and an output end of the third motor (8) passes through the upper arm (6) and is fixedly connected to the lower arm (7).

6. The multifunctional small robotic arm according to claim 5, characterized in that: A second motor (701) is fixed on the inner side of the U-shaped plate (16), and an output end of the second motor (701) passes through the U-shaped plate (16) and is fixedly connected to the rotating seat (702).

7. The multifunctional small robotic arm according to claim 6, characterized in that: A No. 5 motor is provided on one side of the connecting plate (9), and an output end of the No. 5 motor passes through the connecting plate (9) and is fixedly connected to the connecting block (10).

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