A robotic arm that connects circuits within a small space

Abstract

This invention discloses a robotic arm for connecting wires in a small space, comprising a base and a clamping mechanism. The base has an adjustable mounting housing on its upper surface, a sliding plate slidably disposed within the left end of the mounting housing, a rotating cylinder rotatably connected to the lower end of the sliding plate, and a screwdriver head mounted on the right end of the rotating cylinder. The clamping mechanism includes a cylinder, a clamping frame, a sliding column, a V-shaped positioning plate, and a spring. The cylinder is disposed at the right end of the mounting housing, and the clamping frame is longitudinally slidably connected to the outer arc surface of the cylinder. The sliding column is longitudinally slidably connected to the right end of the clamping frame. This robotic arm for connecting wires in a small space simultaneously clamps the wires longitudinally and laterally, making the wire position more accurate during wire connection. The area where the clamping components contact the wires occupies less space, making the robotic arm more suitable for wire connection operations in small spaces and facilitating the replacement of the screwdriver head.

Description

Technical Field

[0001] This invention relates to the field of wiring technology, specifically to a robotic arm for connecting wiring within a small space. Background Technology

[0002] Electrical equipment requires wiring during use because different devices require different current and voltage supplies. Wiring ensures the normal operation of electrical equipment. Selecting the correct wire materials and appropriate connection methods makes the equipment more reliable and stable. Furthermore, wiring prevents damage to the equipment and injury to personnel. Properly wired electrical equipment can avoid problems such as short circuits or current overloads, thus extending its lifespan. In current technology, to reduce the amount of repetitive work involved in wiring, robotic arms are often used. These arms grip the wires, insert them into the component's connector, and finally tighten the connector screws with a screwdriver, automatically completing the wiring connection. However, some robotic arms use multiple gripping components to ensure accurate wire gripping, which can lead to a large space occupied by the contact points between the gripping components and the wires, making wiring operations in confined spaces inconvenient. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the existing defects and provide a robotic arm for connecting wires in a small space. It can clamp the wires in both longitudinal and lateral directions, making the position of the wires more accurate during the connection process. The part of the clamping component that contacts the wire occupies less space, making the robotic arm more suitable for connecting wires in small spaces. This can effectively solve the problems in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a robotic arm for connecting lines in a small space, comprising a base and a clamping mechanism;

[0005] Base: An adjustable mounting housing is installed on its upper surface. The slide plate is slidably set inside the mounting housing. A rotating cylinder is rotatably connected to the lower end of the slide plate. A screwdriver head is installed on the right end of the rotating cylinder.

[0006] Clamping mechanism: It includes a cylinder, a clamping frame, a sliding column, a V-shaped positioning plate, and a spring. The cylinder is located at the right end of the mounting housing. The clamping frame is longitudinally slidably connected to the outer arc surface of the cylinder. The right end of the clamping frame is longitudinally slidably connected to the sliding column. V-shaped positioning plates are provided between the ends of the sliding columns located on the same clamping frame. The front and rear V-shaped positioning plates are installed together. Springs are provided between the V-shaped positioning plates and the clamping frame. The springs are movably sleeved on the outer arc surface of the sliding column, simultaneously clamping the wire longitudinally and laterally, making the position of the wire more accurate during the circuit connection process. The part of the clamping component that contacts the wire occupies less space, making the robot arm more suitable for circuit connection operations in small spaces. While ensuring the screwdriver head is firmly installed, it is easy to replace the screwdriver head of the robot arm, making it convenient for the robot arm to connect different types of components, making the robot arm more convenient to use.

[0007] Furthermore, it also includes a PLC controller, which is located on the left side of the base. The input terminal of the PLC controller is electrically connected to an external power supply to control the start and stop of the entire device.

[0008] Furthermore, the clamping mechanism also includes a slider, a slanted groove, a connecting column, and an electric push rod. The sliders are slidably connected to the inside of the mounting housing, and each slider has a slanted groove inside. The connecting columns are respectively located at the left end of the clamping frame and are slidably connected to the inside of the slanted groove. The electric push rod is respectively located inside the mounting housing. The telescopic end of the electric push rod is fixedly connected to the slider, and the input end of the electric push rod is electrically connected to the output end of the PLC controller to drive the two clamping frames to move relative to each other.

[0009] Furthermore, it also includes a disassembly and assembly mechanism, which includes a conical column, an electric push rod II, a connecting column, and a limiting column. The electric push rod II is disposed on the surface of the slide plate. The left end of the telescopic end of the electric push rod II is provided with a connecting column. The right end of the connecting column passes through the central axis of the rotating drum and is provided with a conical column. The limiting column is longitudinally slidably connected to the inside of the rectangular plate at the right end of the rotating drum. The semi-circular protrusion of the limiting column passes through the circular hole on the surface of the rotating drum and is inserted into the limiting hole of the screwdriver head. The screwdriver head is inserted into the rectangular plate at the right end of the rotating drum, thus firmly limiting the screwdriver head.

[0010] Furthermore, the disassembly and assembly mechanism also includes a top pressure spring and a top pressure ring. The top pressure ring is laterally slidably connected to the outer arc surface of the rotating cylinder. A top pressure spring is provided between the top pressure ring and the rotating cylinder. The top pressure spring is movably sleeved on the outer arc surface of the rotating cylinder, so that the screwdriver head automatically disengages.

[0011] Furthermore, the upper right end of the base is rotatably connected to a rotating plate 1 via a rotating shaft 1, the upper end of the rotating plate 1 is rotatably connected to a rotating plate 2 via a rotating shaft 2, the right end of the rotating plate 2 is rotatably connected to a rotating plate 3 via a rotating shaft 3, and the mounting housing is located at the right end of the rotating plate 3, providing support for adjusting the position of the mounting housing.

[0012] Furthermore, an electric push rod three is rotatably connected to the left end of the upper surface of the base via a rotating shaft four. The upper end of the telescopic end of the electric push rod three is rotatably connected to a rotating plate one via a rotating shaft five. The lower end of the rotating plate one is rotatably connected to an electric push rod four via a rotating shaft six. The upper end of the telescopic end of the electric push rod four is rotatably connected to a rotating plate two via a rotating shaft seven. A rotary motor is provided at the right end of the rotating plate two. The output shaft of the rotary motor is fixedly connected to the rotating shaft three of the rotating plate three. The input ends of the electric push rod three, the electric push rod four, and the rotary motor are all electrically connected to the output end of the PLC controller to provide power for adjusting the position of the mounting housing.

[0013] Furthermore, a screw is rotatably installed inside the mounting housing, and the screw is threadedly connected to the upper end of the slide plate. A motor is installed at the left end inside the mounting housing. The output shaft of the motor is fixedly connected to the left end of the screw, and the input end of the motor is electrically connected to the output end of the PLC controller to provide power for the rightward movement of the screwdriver head.

[0014] Furthermore, a drive column is rotatably installed inside the mounting housing, and a second motor is provided at the left end inside the mounting housing. The output shaft of the second motor is fixedly connected to the drive column. A rotating ring is rotatably connected to the middle of the slide plate through a bearing. The rotating ring is laterally slidably connected to the drive column. Both the outer arc surface of the rotating ring and the outer arc surface of the rotating cylinder are provided with pulleys. The two pulleys are connected by belt drive. The input end of the second motor is electrically connected to the output end of the PLC controller to provide power for the rotation of the screwdriver head.

[0015] Compared with the prior art, the beneficial effects of the present invention are: the robotic arm connecting the wiring in this small space has the following advantages:

[0016] 1. The electric push rod is started by the PLC controller. The telescopic end of the electric push rod moves the slider to the left. Under the guide limit of the cylinder, the clamping frame slides relative to the cylinder. The connecting column slides in the inclined slide groove, so that the two clamping frames move closer to each other and clamp the wire, keeping the end of the wire vertical. At the same time, with the cooperation of the two V-shaped positioning plates, the left and right position of the wire is restricted. The wire is clamped in both longitudinal and lateral directions, making the position of the wire more accurate during the circuit connection process. The part of the clamping component that contacts the wire occupies less space, making the robot arm more suitable for circuit connection operations in small spaces.

[0017] 2. Depending on the model of the component to be wired, the electric push rod two is activated via the PLC controller, driving the conical column to move to the left. When the conical column leaves the space between the two limit posts, the secure limit on the screwdriver head is released. Under the elastic force of the top spring, the screwdriver head automatically disengages. After the screwdriver head is replaced, the conical column moves to the right and enters the space between the two limit posts, pushing the semi-circular end of the limit post to insert into the limit hole of the screwdriver head. This ensures the screwdriver head is securely installed while facilitating the replacement of the screwdriver head on the robotic arm. This also makes it easier for the robotic arm to connect different models of components, making the robotic arm more convenient to use. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present invention;

[0019] Figure 2 This is an enlarged structural diagram of point A in the present invention;

[0020] Figure 3 This is a structural schematic diagram of the front cross-section of the mounting housing of the present invention;

[0021] Figure 4 This is a schematic diagram of the disassembly and assembly mechanism of the present invention;

[0022] Figure 5 This is a top view of the mounting housing of the present invention.

[0023] Figure 6 This is an enlarged structural diagram of section B of the present invention.

[0024] In the diagram: 1. Base, 2. Mounting housing, 3. Clamping mechanism, 31. Cylinder, 32. Clamping frame, 33. Sliding column, 34. V-shaped positioning plate, 35. Spring, 36. Slider, 37. Inclined slide groove, 38. Connecting column, 39. Electric push rod one, 4. Slide plate, 5. Rotary cylinder, 6. Screwdriver head, 7. Disassembly and assembly mechanism, 71. Conical column, 72. Electric push rod two, 73. Connecting column, 74. Limiting column, 75. Top pressure spring, 76. Top pressure ring, 8. Rotating plate one, 9. Rotating plate two, 10. Rotating plate three, 11. PLC controller, 12. Electric push rod three, 13. Electric push rod four, 14. Rotary motor, 15. Screw, 16. Motor one, 17. Drive column, 18. Motor two, 19. Rotary ring, 20. Pulley, 21. Belt. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] Please see Figure 1-6 This embodiment provides a technical solution: a robotic arm for connecting lines in a small space, including a base 1 and a clamping mechanism 3;

[0027] Base 1: An adjustable mounting housing 2 is mounted on its upper surface, providing space for the installation of wiring components. A sliding plate 4 is slidably disposed within the mounting housing 2. A rotating drum 5 is rotatably connected to the lower end of the sliding plate 4. A screwdriver head 6 is mounted on the right end of the rotating drum 5. The screwdriver head 6 is moved to the right by the sliding plate 4, and rotated by the rotating drum 5, so that the screwdriver head 6 tightens the wiring screws of the components. The base also includes a PLC controller 11, located on the left side of the base 1, which controls the start and stop of the entire device. The input terminal of the PLC controller 11 is electrically connected to an external power supply. The base also includes a disassembly / assembly mechanism 7, which includes a conical column 71, an electric push rod 72, a connecting column 73, and a limiting column 74. The electric push rod 72 is... On the surface of the slide plate 4, the left end of the telescopic end of the electric push rod 72 is provided with a connecting post 73. The right end of the connecting post 73 passes through the central axis of the rotating cylinder 5 and is provided with a tapered post 71. The limiting post 74 is longitudinally slidably connected to the inside of the rectangular plate at the right end of the rotating cylinder 5. The semi-circular protrusion of the limiting post 74 passes through the circular hole on the surface of the rotating cylinder 5 and is inserted into the limiting hole of the screwdriver head 6. The screwdriver head 6 is inserted into the rectangular plate at the right end of the rotating cylinder 5. The disassembly and assembly mechanism 7 also includes a top pressure spring 75 and a top pressure ring 76. The top pressure ring 76 is laterally slidably connected to the outer arc surface of the rotating cylinder 5. A top pressure spring 75 is provided between the top pressure ring 76 and the rotating cylinder 5. The top pressure spring 75 is movably sleeved on the outer arc surface of the rotating cylinder 5. During the wiring process, depending on the different models of the components to be wired, the electric push rod 72 is activated, and the electric... The telescopic end of push rod 72 drives the connecting post 73 and the conical post 71 to move. When the conical post 71 leaves the space between the two limiting posts 74, the relative movement of the two limiting posts 74 is unrestricted. Under the elastic force of the top pressure spring 75, the top pressure ring 76 applies a rightward force to the screwdriver head 6, and the screwdriver head 6 applies a force to the semi-circular end of the limiting post 74, causing the two limiting posts 74 to move relative to each other. At the same time, it pushes the screwdriver head 6 away from the right end of the rotating drum 5 to replace the screwdriver head 6. After replacement, the electric push rod 72 is activated, causing the conical post 71 to enter between the two limiting posts 74. The conical arc surface of the conical post 71 pushes the two limiting posts 74 to separate relative to each other, so that the semi-circular end of the limiting post 74 is inserted into the limiting hole of the screwdriver head 6. The base 1 has a pair of screwdriver heads 6 for positioning. A rotating plate 8 is rotatably connected to the right end of the upper surface of the base 1 via a rotating shaft 1. A rotating plate 9 is rotatably connected to the upper end of rotating plate 8 via a rotating shaft 2. A rotating plate 10 is rotatably connected to the right end of rotating plate 10 via a rotating shaft 3. A mounting housing 2 is located at the right end of rotating plate 10. An electric push rod 12 is rotatably connected to the left end of the upper surface of the base 1 via a rotating shaft 4. The upper end of the telescopic end of electric push rod 12 is rotatably connected to rotating plate 8 via a rotating shaft 5. An electric push rod 13 is rotatably connected to the lower end of rotating plate 8 via a rotating shaft 6. The upper end of the telescopic end of electric push rod 13 is rotatably connected to rotating plate 9 via a rotating shaft 7. A rotary motor 14 is located at the right end of rotating plate 9. The output shaft of the rotary motor 14 is fixedly connected to rotating shaft 3 of rotating plate 10.The input terminals of electric actuators 12, 13, and 14 are all electrically connected to the output terminal of PLC controller 11. Starting electric actuators 12, 13, and 14 respectively causes the extension and retraction of electric actuator 12 to rotate the rotating plate 8 relative to the base 1. The extension and retraction of electric actuator 13 causes the rotating plate 8 to rotate relative to the rotating plate 9. The rotation of the output shaft of the rotary motor 14 causes the rotating plate 9 to rotate relative to the rotating plate 10, adjusting the position of the mounting housing 2 and moving the end of the wire to the designated position. A screw 15 is rotatably installed inside the mounting housing 2, threadedly connected to the upper end of the slide plate 4. A motor 16 is located on the left end inside the mounting housing 2, with its output shaft fixedly connected to the left end of the screw 15. The input terminal of motor 16 is electrically connected to the output terminal of PLC controller 11. Starting motor 16 causes its output shaft to rotate the screw 15, which in turn rotates the plate 8 relative to the base 1. The threaded connection of the slide plate 4 drives it to move to the right. A drive column 17 is rotatably mounted inside the mounting housing 2. A second motor 18 is located at the left end of the mounting housing 2. The output shaft of the second motor 18 is fixedly connected to the drive column 17. A rotating ring 19 is rotatably connected to the middle of the slide plate 4 via a bearing. The rotating ring 19 is laterally slidably connected to the drive column 17. Both the outer arc surface of the rotating ring 19 and the outer arc surface of the rotating drum 5 are equipped with pulleys 20. The two pulleys 20 are connected by a belt 21. The input end of the second motor 18 is electrically connected to the output end of the PLC controller 11. When the second motor 18 is started, its output shaft drives the drive column 17 to rotate. The lateral sliding connection between the drive column 17 and the rotating ring 19 restricts their relative rotation, causing the drive column 17 to drive the rotating ring 19 and the upper pulley 20 to rotate. Through the belt 21, the lower pulley 20 drives the rotating drum 5 to rotate, causing the screwdriver head 6 to rotate as it moves to the right.

[0028] Clamping mechanism 3 includes a cylinder 31, a clamping frame 32, a sliding column 33, a V-shaped positioning plate 34, and a spring 35. The cylinder 31 is located at the right end of the mounting housing 2. The clamping frame 32 is longitudinally slidably connected to the outer arc surface of the cylinder 31. The right end of the clamping frame 32 is longitudinally slidably connected to the sliding column 33. A V-shaped positioning plate 34 is provided between the ends of the sliding columns 33 located on the same clamping frame 32. The two V-shaped positioning plates 34 are fitted together. A spring 35 is provided between the V-shaped positioning plate 34 and the clamping frame 32. The spring 35 is movably sleeved on the outer arc surface of the sliding column 33. The clamping mechanism 3 also includes a slider 36, an inclined sliding groove 37, a connecting column 38, and an electric push rod 39. The slider 36 is slidably connected to the inside of the mounting housing 2. The inside of the slider 36 is provided with an inclined sliding groove. The slot 37 and connecting post 38 are respectively located at the left end of the clamping frame 32 and are slidably connected inside the inclined slide groove 37. The electric push rod 39 is respectively located inside the mounting housing 2. The telescopic end of the electric push rod 39 is fixedly connected to the slider 36. The input end of the electric push rod 39 is electrically connected to the output end of the PLC controller 11. When the electric push rod 39 is started, the telescopic end of the electric push rod 39 drives the slider 36 to move to the left. Under the guide limit of the cylinder 31, the clamping frame 32 slides relative to the cylinder 31. The connecting post 38 slides in the inclined slide groove 37, so that the two clamping frames 32 move closer to each other to clamp the wire and keep the end of the wire vertical. At the same time, with the cooperation of the two V-shaped positioning plates 34, the left and right positions of the wire are restricted.

[0029] The working principle of the robotic arm for connecting wires in a small space provided by this invention is as follows: When wiring components is required, the PLC controller 11 starts the electric push rod 39. The telescopic end of the electric push rod 39 drives the slider 36 to move to the left. Under the guide limit of the cylinder 31, the clamping frame 32 slides relative to the cylinder 31, and the connecting column 38 slides in the inclined slide groove 37, so that the two clamping frames 32 move closer to each other to clamp the wire and keep the end of the wire vertical. At the same time, with the cooperation of the two V-shaped positioning plates 34, the left and right positions of the wire are restricted. Then, the electric push rod 12, the electric push rod 13, and the rotary motor are started respectively. 14. Using the extension and retraction of electric push rod 12, rotating plate 18 rotates relative to base 1. Using the extension and retraction of electric push rod 13, rotating plate 18 rotates relative to rotating plate 29. Using the rotation of the output shaft of rotary motor 14, rotating plate 29 rotates relative to rotating plate 10. Adjusting the position of mounting housing 2 moves the end of the wire, allowing it to be inserted into the wiring hole of the component. Then, start motor 16. The output shaft of motor 16 drives screw 15 to rotate. Through the threaded connection between screw 15 and slide plate 4, slide plate 4 moves to the right. Simultaneously, start motor 218. The output shaft of motor 218 drives drive column 17 to rotate. The drive column 17 is laterally slidingly connected to the rotating ring 19, limiting their relative rotation. This causes the drive column 17 to drive the rotating ring 19 and the upper pulley 20 to rotate. Through the transmission connection of the belt 21, the lower pulley 20 drives the rotating drum 5 to rotate, causing the screwdriver head 6 to rotate as it moves to the right, tightening the wiring screws on the components and completing the wiring of the components. During the wiring process, depending on the model of the component to be wired, the electric push rod 72 is activated. The telescopic end of the electric push rod 72 drives the connecting column 73 and the conical column 71 to move. When the conical column 71 moves away from the two limit columns 74... During this period, the relative movement of the two limiting posts 74 is unrestricted. Under the elastic force of the top pressure spring 75, the top pressure ring 76 applies a rightward force to the screwdriver head 6, and the screwdriver head 6 applies a force to the semi-circular end of the limiting post 74, causing the two limiting posts 74 to move relative to each other. At the same time, the screwdriver head 6 is pushed away from the right end of the rotating drum 5 to replace the screwdriver head 6. After the replacement is completed, the electric push rod 72 is activated, causing the conical post 71 to enter between the two limiting posts 74. The conical arc surface of the conical post 71 pushes the two limiting posts 74 to separate relative to each other, so that the semi-circular end of the limiting post 74 is inserted into the limiting hole of the screwdriver head 6, thus completing the limiting of the screwdriver head 6.

[0030] It is worth noting that the PLC controller 11 disclosed in the above embodiments can be an NX7 model PLC controller. The electric linear actuators 1-39, 2-72, 3-12, 4-13, rotary motor 14, motor 1-16, and motor 2-18 can be freely configured according to the actual application scenario. The electric linear actuators 1-39, 2-72, 3-12, and 4-13 can all be ANT-52 model electric linear actuators. The rotary motor 14 can be a 3M57-42A model stepper motor. The motors 1-16 and 2-18 can both be RS-775PH model micro motors. The PLC controller 11 controls the operation of the electric linear actuators 1-39, 2-72, 3-12, 4-13, rotary motor 14, motor 1-16, and motor 2-18 using methods commonly used in the prior art.

[0031] The above are merely embodiments of the present invention and do not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A robotic arm for connecting circuits within a small space, characterized in that: Includes a base (1) and a clamping mechanism (3); Base (1): An adjustable mounting housing (2) is installed on its upper surface. A sliding plate (4) is slidably set inside the mounting housing (2). A rotating cylinder (5) is rotatably connected to the lower end of the sliding plate (4). A screwdriver head (6) is installed on the right end of the rotating cylinder (5). Clamping mechanism (3): It includes a cylinder (31), a clamping frame (32), a sliding column (33), a V-shaped positioning plate (34) and a spring (35). The cylinder (31) is located at the right end of the mounting housing (2). The outer arc surface of the cylinder (31) is longitudinally slidably connected to the clamping frame (32). The right end of the clamping frame (32) is longitudinally slidably connected to the sliding column (33). A V-shaped positioning plate (34) is provided between the ends of the sliding column (33) located in the same clamping frame (32). The front and rear V-shaped positioning plates (34) are installed together. A spring (35) is provided between the V-shaped positioning plate (34) and the clamping frame (32). The spring (35) is movably sleeved on the outer arc surface of the sliding column (33). It also includes a PLC controller (11), which is located on the left side of the base (1), and the input terminal of the PLC controller (11) is electrically connected to an external power supply; The clamping mechanism (3) further includes a slider (36), a slanted groove (37), a connecting column (38), and an electric push rod (39). The slider (36) is slidably connected to the inside of the mounting housing (2). The inside of each slider (36) is provided with a slanted groove (37). The connecting column (38) is respectively located at the left end of the clamping frame (32). The connecting column (38) is slidably connected to the inside of the slanted groove (37). The electric push rod (39) is respectively located inside the mounting housing (2). The telescopic end of the electric push rod (39) is fixedly connected to the slider (36). The input end of the electric push rod (39) is electrically connected to the output end of the PLC controller (11). It also includes a disassembly and assembly mechanism (7), which includes a conical column (71), an electric push rod II (72), a connecting column (73) and a limiting column (74). The electric push rod II (72) is set on the surface of the slide plate (4). The left end of the telescopic end of the electric push rod II (72) is provided with a connecting column II (73). The right end of the connecting column II (73) passes through the central axis of the rotating cylinder (5) and is provided with a conical column (71). The limiting column (74) is longitudinally slidably connected to the inside of the rectangular plate at the right end of the rotating cylinder (5). The semi-circular protrusion of the limiting column (74) passes through the circular hole on the surface of the rotating cylinder (5) and is inserted into the limiting hole of the screwdriver head (6). The screwdriver head (6) is inserted into the rectangular plate at the right end of the rotating cylinder (5).

2. The robotic arm for connecting circuits in a small space according to claim 1, characterized in that: The disassembly and assembly mechanism (7) also includes a top pressure spring (75) and a top pressure ring (76). The top pressure ring (76) is laterally slidably connected to the outer arc surface of the rotating cylinder (5). A top pressure spring (75) is provided between the top pressure ring (76) and the rotating cylinder (5). The top pressure spring (75) is movably sleeved on the outer arc surface of the rotating cylinder (5).

3. The robotic arm for connecting circuits in a small space according to claim 1, characterized in that: The upper surface of the base (1) is rotatably connected to the right end of the rotating plate (8) via the rotating shaft one. The upper end of the rotating plate (8) is rotatably connected to the rotating plate (9) via the rotating shaft two. The right end of the rotating plate (9) is rotatably connected to the rotating plate (10) via the rotating shaft three. The mounting housing (2) is located at the right end of the rotating plate (10).

4. The robotic arm for connecting circuits in a small space according to claim 3, characterized in that: The upper surface of the base (1) is rotatably connected to the left end of the upper surface via the fourth rotating shaft. The upper end of the telescopic end of the electric push rod (12) is rotatably connected to the first rotating plate (8) via the fifth rotating shaft. The lower end of the first rotating plate (8) is rotatably connected to the fourth electric push rod (13) via the sixth rotating shaft. The upper end of the telescopic end of the fourth electric push rod (13) is rotatably connected to the second rotating plate (9) via the seventh rotating shaft. The right end of the second rotating plate (9) is provided with a rotary motor (14). The output shaft of the rotary motor (14) is fixedly connected to the third rotating shaft of the third rotating plate (10). The input ends of the electric push rod (12), the fourth electric push rod (13) and the rotary motor (14) are all electrically connected to the output end of the PLC controller (11).

5. The robotic arm for connecting circuits in a small space according to claim 1, characterized in that: The mounting housing (2) is rotatably provided with a screw (15), which is threadedly connected to the upper end of the slide plate (4). The mounting housing (2) is provided with a motor (16) on the left end. The output shaft of the motor (16) is fixedly connected to the left end of the screw (15), and the input end of the motor (16) is electrically connected to the output end of the PLC controller (11).

6. The robotic arm for connecting circuits in a small space according to claim 1, characterized in that: The mounting housing (2) is rotatably equipped with a drive column (17). The left end of the mounting housing (2) is equipped with a second motor (18). The output shaft of the second motor (18) is fixedly connected to the drive column (17). The middle part of the slide plate (4) is rotatably connected to a rotating ring (19) through a bearing. The rotating ring (19) is laterally slidably connected to the drive column (17). The outer arc surface of the rotating ring (19) and the outer arc surface of the rotating cylinder (5) are both equipped with pulleys (20). The two pulleys (20) are connected by a belt (21). The input end of the second motor (18) is electrically connected to the output end of the PLC controller (11).

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