Mechanical arm for carrying electric appliances

Abstract

The mechanical arm comprises a mechanical arm assembly, the output end of the mechanical arm assembly is connected with a connecting frame, a quick change device is arranged on one side of the connecting frame, the quick change device comprises an unlocking sleeve, a clamping sleeve, a clamping groove, a clamping rod, a locking rod and a connecting spring, the clamping sleeve is installed on the outer side of the clamping rod, the clamping groove is spirally formed in the outer side of the clamping rod, and the locking rod is connected with the unlocking sleeve. The multiple locking rods are arranged on the side wall of the clamping sleeve in a sliding mode along a spiral array, the outer ends of the locking rods are connected with the outer wall of the clamping sleeve through connecting springs, a locking mechanism is installed on the outer side of the clamping sleeve, and the locking mechanism comprises a moving groove, a fixed block, an adaptive block, an adaptive spring, a connecting plate, a locking groove, a transverse plate and a moving plate. The two ends of the adaptive spring are connected with the fixing block and the adaptive block respectively, the connecting plate is installed on one side of the unlocking sleeve, the multiple locking grooves are formed in the clamping grooves, the three transverse plates are installed on one side of the connecting plate, and the grabbing assembly and the mechanical arm assembly can be connected and disassembled conveniently and reliably.

Description

Technical Field

[0001] This utility model relates to the field of robotic arms for handling electrical appliances, and more specifically, it relates to a robotic arm for handling electrical appliances. Background Technology

[0002] In the technological development of the industrial automation field, robotic arms used for electrical handling are key equipment for precise control and material transfer. Their flexibility and adaptability directly affect the overall efficiency and flexible manufacturing capabilities of the production line. However, there are still technical bottlenecks and problems that need to be overcome in terms of the practicality, convenience and reliability of the connection system between the robotic arm assembly and the gripping assembly.

[0003] From an operational perspective, the connection mechanism between the robotic arm assembly and the gripping assembly in existing technologies typically employs traditional connection methods. While these methods have their own advantages under specific working conditions, they generally present common problems of complex operation and time-consuming labor in actual engineering practice: bolt connections require the use of various specialized tools such as wrenches, screwdrivers, and Allen wrenches, and must be operated according to specific tightening sequences and torque requirements; pin connections, although relatively simple to operate, still require the use of pin removers and fixing tools, and are limited in confined spaces. This cumbersome and time-consuming connection and disassembly process not only significantly reduces equipment utilization efficiency and production line flexibility, but also increases technical labor intensity and changeover time losses. This problem is particularly prominent in multi-variety, small-batch production modes where frequent gripping assembly replacements make this issue especially prominent.

[0004] It is worth noting that some innovative designs have indeed emerged in the industry attempting to address the ease of connection and disassembly between the robotic arm assembly and the gripping assembly through quick-connect mechanisms. These improved structures have simplified the installation and removal of the gripping assembly to some extent, reduced tool dependence, improved replacement efficiency, and created conditions for flexible switching between different types of gripping assemblies. However, they generally suffer from a common technical defect: insufficient connection stability. First, most quick-connect structures lack redundant safety features and fail-safe protection. Second, when the robotic arm is in high-speed motion or under emergency stop conditions, inertial forces and impact loads may cause slight displacement of the locking mechanism. The connection may become loose or partially loose, reducing the overall reliability of the connection. During long-term operation of the equipment, the alternating load and vibration effects generated when the gripping assembly moves electrical products of different weights may cause changes in the position of the components of the connection mechanism. The simple locking mechanism is difficult to maintain stable connection performance in the long term, and there is a risk of accidental unlocking. More seriously, the risks caused by this connection instability are particularly prominent in the process of handling precision electrical products. Accidental loosening or displacement of the gripping assembly may not only cause electrical products to fall and be damaged, and the production line to stop, but may also cause the robotic arm to swing out of control due to sudden load release, posing a safety threat to surrounding equipment and operators. Summary of the Invention

[0005] (a) Technical problems to be solved

[0006] In view of the problems existing in the prior art, this utility model provides a robotic arm for handling electrical appliances to solve the technical problems mentioned in the background art.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] A robotic arm for handling electrical appliances includes a robotic arm assembly. A connecting frame is connected to the output end of the robotic arm assembly. A quick-change device is provided on one side of the connecting frame. The quick-change device includes an unlocking sleeve, a retaining sleeve, a retaining groove, retaining rods, locking rods, and a connecting spring. The unlocking sleeve is slidably mounted on the outside of the retaining sleeve. The retaining sleeve is detachably mounted on the outside of the retaining rod. The retaining groove is spirally formed on the outside of the retaining rod. Multiple locking rods are slidably arranged along a spiral array on the side wall of the retaining sleeve. The outer ends of the locking rods are connected to the outer wall of the retaining sleeve via connecting springs. A locking mechanism is installed on the outside of the retaining sleeve. The locking mechanism includes a movable groove, a fixed block, an adapter block, an adapter spring, a connecting plate, a lock groove, a horizontal plate, and a movable plate. The movable groove is formed on the movable plate. The fixed block is fixedly installed on the outside of the sleeve. The adapter block is fixedly installed on one side of the movable plate. The two ends of the adapter spring are respectively connected to the fixed block and the adapter block. The connecting plate is fixedly installed on one side of the unlocking sleeve. Multiple lock grooves are formed in the slot, and the inner end of the locking rod is inserted into the lock groove. Three horizontal plates are fixedly installed on one side of the connecting plate. The movable plate is rotatably installed on the outside of the sleeve.

[0010] Furthermore, a mounting bracket is provided on one side of the connecting frame, and a gripping assembly is detachably mounted on the mounting bracket.

[0011] Furthermore, a base is detachably provided on one side of the robotic arm assembly, and the robotic arm assembly is detachably mounted on the base.

[0012] Furthermore, a slot is provided on one side of the connecting bracket, and a plug is fixedly provided on one side of the mounting bracket. The plug can be detachably inserted into the slot to ensure precise and stable installation.

[0013] Furthermore, the fixing block has an adapter hole, and an adapter rod is connected to one side of the adapter block. One end of the adapter rod slides into the adapter hole, thereby guiding and limiting the adapter spring.

[0014] Furthermore, a guide rail is fixedly provided on the outer side of the card sleeve, and a guide groove is provided on the inner side of the unlocking sleeve. The guide groove is adapted to the guide rail to achieve guiding and limiting of the unlocking sleeve.

[0015] Furthermore, a movable spring is movably provided on the inner side of the sleeve, and movable plates are respectively connected to both ends of the movable spring.

[0016] Furthermore, a support spring is connected to one side of the unlocking sleeve, and a thrust bearing is detachably provided on one side of the moving plate. The other end of the support spring is connected to the thrust bearing, ensuring the stable reset of the unlocking sleeve.

[0017] (III) Beneficial Effects

[0018] Compared with the prior art, this utility model provides a robotic arm for handling electrical appliances, which has the following advantages:

[0019] 1. The quick-change device, through the ingenious coordination of the unlocking sleeve, clamp, slot, lever, locking lever, and connecting spring, completely solves the technical problem of cumbersome and time-consuming connection and disassembly between existing robotic arm assemblies and gripping assemblies. Unlike traditional bolt connections, which require multiple professional tools such as wrenches, screwdrivers, and Allen wrenches, and complex operations that strictly adhere to specific tightening sequences and torque requirements; and unlike pin connections, which, while relatively simple, still require pin removers and fixing tools and are limited in confined spaces, this quick-change device only requires rotating or pulling the clamp to move the locking lever. Moving orderly along the spiral array, the inner end of the locking bar smoothly inserts into or disengages from the locking slot in the card slot, realizing the rapid connection and separation of the robotic arm assembly and the gripping assembly. This innovative design requires no special tools, greatly improving the efficiency of equipment maintenance and system replacement, reducing professional labor costs and downtime economic losses. Especially in multi-variety, small-batch production modes, the efficient connection characteristics of this quick-change device can significantly shorten the replacement cycle of the gripping assembly, ensuring production flexibility and rapid response capabilities, and providing a revolutionary rapid connection solution for robotic arms in the field of automated industry.

[0020] 2. The locking mechanism, through the coordinated action of components such as the moving slot, fixed block, adapter block, adapter spring, connecting plate, lock groove, horizontal plate, and moving plate, cleverly solves the technical defects of insufficient connection stability and easy accidental unlocking that are common in quick-connect structures in the industry. This locking mechanism adopts a multi-redundant safety design: First, the moving plate, in conjunction with the horizontal plate, limits the unlocking sleeve to a fixed position, forming the first mechanical lock; second, the unlocking sleeve limits the outer end of the locking rod through the inner wall, forming the second protective barrier; third, the cooperation between the locking rod and the lock groove locks the sleeve in a specific position, forming the third layer of security. This multi-level failure protection design ensures that the entire locking system can withstand rapid unlocking of the robotic arm. Even under inertial forces and impact loads generated during shutdown, it can maintain high stability, eliminating the risk that simple locking mechanisms cannot cope with multi-dimensional mechanical forces simultaneously. It creates a safety mechanism that requires a specific operating sequence to unlock. Even under alternating loads and vibration effects generated when the gripping assembly is handling electrical products of different weights, the locking mechanism can firmly and reliably maintain the locked state. This effectively prevents electrical products from falling and being damaged, production line from stopping, and the safety threats to surrounding equipment and operators caused by the uncontrolled swing of the robotic arm due to sudden load release. It significantly improves the operational safety and reliability of the electrical handling robotic arm. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of a robotic arm for handling electrical appliances according to this utility model;

[0022] Figure 2 This is a schematic diagram of the dispersed structure of the connecting frame and mounting frame in this utility model;

[0023] Figure 3 This is a schematic diagram of the dispersed structure of the ferrule and the lever in this utility model;

[0024] Figure 4 This is a cross-sectional view of the quick-change device and locking mechanism of this utility model without the locking lever portion;

[0025] Figure 5 This is a schematic diagram of the structure of the locking rod and the clamping rod in this utility model.

[0026] In the diagram: 1. Robotic arm assembly; 2. Connecting frame; 3. Unlocking sleeve; 4. Sleeve; 5. Slot; 6. Locking rod; 7. Locking rod; 8. Connecting spring; 9. Moving slot; 10. Fixing block; 11. Adapter block; 12. Adapter spring; 13. Connecting plate; 14. Locking slot; 15. Horizontal plate; 16. Moving plate; 17. Mounting frame; 18. Gripping assembly; 19. Base; 20. Slot; 21. Insertion block; 22. Adapter hole; 23. Adapter rod; 24. Guide rail; 25. Guide groove; 26. Movable spring; 27. Movable plate; 28. Support spring; 29. ​​Thrust bearing. Detailed Implementation

[0027] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0028] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0029] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0030] Please see Figures 1-5 A robotic arm for handling electrical appliances includes a robotic arm assembly 1. A connecting frame 2 is connected to the output end of the robotic arm assembly 1. A quick-change device is provided on one side of the connecting frame 2. The quick-change device includes an unlocking sleeve 3, a retaining sleeve 4, a retaining groove 5, a retaining rod 6, a locking rod 7, and a connecting spring 8. The unlocking sleeve 3 is slidably mounted on the outside of the retaining sleeve 4. The retaining sleeve 4 is detachably mounted on the outside of the retaining rod 6. The retaining groove 5 is spirally formed on the outside of the retaining rod 6. Multiple locking rods 7 are slidably arranged along a spiral array on the side wall of the retaining sleeve 4. The outer ends of the locking rods 7 are connected to the outer wall of the retaining sleeve 4 via the connecting spring 8. A locking mechanism is installed on the outside of the retaining sleeve 4. The locking mechanism includes a movable... The device includes a slot 9, a fixing block 10, an adapter block 11, an adapter spring 12, a connecting plate 13, a lock groove 14, a horizontal plate 15, and a moving plate 16. The moving groove 9 is opened on the moving plate 16. The fixing block 10 is fixedly installed on the outside of the sleeve 4. The adapter block 11 is fixedly installed on one side of the moving plate 16. The two ends of the adapter spring 12 are connected to the fixing block 10 and the adapter block 11 respectively. The connecting plate 13 is fixedly installed on one side of the unlocking sleeve 3. Multiple lock grooves 14 are opened in the slot 5, and the inner end of the locking rod 7 is inserted into the lock groove 14. Three horizontal plates 15 are fixedly installed on one side of the connecting plate 13. The moving plate 16 is rotatably installed on the outside of the sleeve 4.

[0031] A mounting bracket 17 is provided on one side of the connecting bracket 2, and a gripping assembly 18 is detachably provided on the mounting bracket 17.

[0032] The robotic arm assembly 1 has a detachable base 19 on one side, and the robotic arm assembly 1 can be detachably mounted on the base 19.

[0033] A slot 20 is provided on one side of the connecting bracket 2, and a plug 21 is fixed on one side of the mounting bracket 17. The plug 21 can be detachably inserted into the slot 20.

[0034] In this embodiment, when the gripping assembly 18 needs to be replaced, it must first be removed from the connecting frame 2 connected to the output end of the robotic arm assembly 1. First, rotate the moving plate 16 forward. The moving plate 16 will drive the moving groove 9 and the thrust bearing 29 installed on one side to rotate forward. The moving plate 16 will also drive the adapter block 11 on one side to rotate. Then, the adapter block 11 will drive the adapter rod 23 on one side to rotate forward along the adapter hole 22. The adapter block 11 and the fixing block 10 cooperate to compress the adapter spring 12. When the adapter spring 12 is compressed to its limit, the moving groove 9... The device rotates to the position corresponding to the horizontal plate 15, then pushes the unlocking sleeve 3, causing it to slide along the guide rail 24 and guide groove 25. The unlocking sleeve 3 will drive the connecting plate 13 and the horizontal plate 15 to gradually pass through the moving groove 9. The unlocking sleeve 3 will cooperate with the thrust bearing 29 to compress the support spring 28. When the support spring 28 is compressed to its limit, the horizontal plate 15 closest to the unlocking sleeve 3 will pass through the moving groove 9 and move to the other side of the moving plate 16. Then the moving plate 16 is released, the adapter spring 12 pushes the adapter block 11 to rotate and reset, and then the adapter block 11 drives the adapter rod 23. Rotate along the adapter hole 22 to reset, and the adapter block 11 drives the moving groove 9 to rotate and reset to a position that does not correspond to the horizontal plate 15 via the moving plate 16. Then, the connecting plate 13 and the horizontal plate 15 closest to the unlocking sleeve 3 cooperate to limit the unlocking sleeve 3 to one side of the moving plate 16. Then, the inner wall of the unlocking sleeve 3 no longer limits the outer end of the locking rod 7. Then, pull the ferrule 4 to one side. The ferrule 4 will drive multiple locking rods 7 to move. Then, the inner wall of the lock groove 14 presses against the inner end of the locking rod 7. Due to the rounded corner design at the edge of the inner wall of the lock groove 14 and the end of the locking rod 7, the inner end of the locking rod 7 slides out of the lock groove 14. When the locking rod 7 is pulled outward, the outer end of the locking rod 7 will cause the connecting spring 8 to be stretched outward. At the same time, the movable spring 26 will reset and push the movable plate 27, causing the sleeve 4 and the locking rod 6 to separate. Then, the sleeve 4 will be pulled out, causing the inner end of the locking rod 7 to slide out of the slot 5. Then, the sleeve 4 will be completely disengaged from the outside of the locking rod 6. At this time, the connecting spring 8 will drive the locking rod 7 to slide and reset. Then, the other sleeve 4 will be removed according to the above steps. Then, the mounting bracket 17 will be removed from the side of the connecting bracket 2, so that the insert block 21 on the side of the mounting bracket 17 will slide out of the slot 20, thereby realizing the removal of the gripping assembly 18.

[0035] Please see Figures 3-5 As a further implementation of the overall device: the fixed block 10 has an adapter hole 22, and an adapter rod 23 is connected to one side of the adapter block 11. One end of the adapter rod 23 slides into the adapter hole 22.

[0036] The outer side of the card sleeve 4 is fixed with a guide rail 24, and the inner side of the unlocking sleeve 3 is provided with a guide groove 25, which is adapted to the guide rail 24.

[0037] The inner side of the sleeve 4 is provided with a movable spring 26, and movable plates 27 are respectively connected to both ends of the movable spring 26.

[0038] A support spring 28 is connected to one side of the unlocking sleeve 3, and a thrust bearing 29 is detachably provided on one side of the movable plate 16. The other end of the support spring 28 is connected to the thrust bearing 29.

[0039] More specifically, when removing the gripping assembly 18 and the mounting bracket 17, the new gripping assembly 18 along with the mounting bracket 17 is removed. Then, the insert 21 on one side of the mounting bracket 17 is inserted into the slot 20 on one side of the connecting bracket 2. Simultaneously, the locking rod 6, fixedly connected to one side of the mounting bracket 17, passes through the pre-drilled mounting hole on the connecting bracket 2. Then, the sleeve 4 is fitted onto the outside of the locking rod 6, causing the sleeve 4 to drive the locking rod 7 into the slot 5. Then, the sleeve 4 is rotated clockwise, causing all the locking rods 7 to gradually enter the slot 5. The outer end of the locking rod 7 will cause the connecting spring 8 to stretch outwards. Then, the locking rod 7 rotates... During the process, it will move to the position corresponding to the lock groove 14. Then, the connecting spring 8 will drive the lock rod 7 to slide inward and insert the inner end of the lock rod 7 into the lock groove 14. When the ferrule 4 and the ferrule 6 cooperate to completely press the mounting bracket 17 and the connecting bracket 2 together, all the lock rods 7 will move to the position corresponding to the original lock groove 14. Then, the connecting spring 8 will reset and pull the lock rod 7 to slide inward and insert it into the original lock groove 14. Then, the moving plate 16 will rotate forward again, causing the moving plate 16 to drive the moving groove 9 and the thrust bearing 29 installed on one side to rotate forward again. The moving plate 16 will also drive the adapter block 11 on one side to rotate forward again. Then, the adapter block 11 will rotate forward again. The adapter rod 23 on one side rotates again along the adapter hole 22 in the forward direction, and the adapter block 11 and the fixing block 10 cooperate again to press the adapter spring 12. When the moving groove 9 rotates again to the position corresponding to the horizontal plate 15, the support spring 28 pushes the unlocking sleeve 3 to slide back to its original position along the guide rail 24 and the guide groove 25. Then the unlocking sleeve 3 will drive the three horizontal plates 15 to slide back to their original position through the connecting plate 13. When the support spring 28 is fully reset, the other two horizontal plates 15 will move to the sides of the moving plate 16 respectively. Then the moving plate 16 is released again, and the adapter spring 12 pushes the adapter block 11 to rotate back to its original position. The adapter block 11 then drives the adapter rod 23 to rotate along the guide hole 22 in the forward direction. The adapter rod 23 rotates in the opposite direction to reset, and the adapter block 11 drives the adapter groove and thrust bearing 29 to rotate in the opposite direction to reset again through the adapter plate. At this time, the connecting plate 13 and the corresponding two horizontal plates 15 cooperate to limit and support the unlocking sleeve 3 to one side of the moving plate 16. With the guide rail 24 and guide groove 25 limiting the unlocking sleeve 3, the unlocking sleeve 3 cannot slide. Then, the inner wall of the unlocking sleeve 3 limits the outer end of the locking rod 7, so that the locking rod 7 cannot move. Then, the locking rod 7 and the locking groove 14 cooperate to lock the clamping rod 6 and the clamping sleeve 4, so that the clamping sleeve 4 and the clamping rod 6 cannot move relative to each other, thereby ensuring the installation stability and ensuring the stable operation of electrical appliance handling.

[0040] In summary, during the use or operation of the overall equipment: when it is necessary to replace the gripping assembly 18, first disconnect the gripping assembly 18 from the connecting frame 2 connected to the output end of the robotic arm assembly 1. First, rotate the moving plate 16 forward. The moving plate 16 will drive the moving groove 9 and the thrust bearing 29 installed on one side to rotate forward. The moving plate 16 will also drive the adapter block 11 on one side to rotate. Then, the adapter block 11 will drive the adapter rod 23 on one side to rotate forward along the adapter hole 22. The adapter block 11 and the fixing block 10 cooperate to compress the adapter spring 12. When the adapter spring 12 is compressed to its maximum... Within a time limit, the moving slot 9 rotates to the position corresponding to the horizontal plate 15, and then pushes the unlocking sleeve 3, causing the unlocking sleeve 3 to slide along the guide rail 24 and the guide slot 25. The unlocking sleeve 3 will drive the connecting plate 13 and the horizontal plate 15 to gradually pass through the moving slot 9, and the unlocking sleeve 3 will cooperate with the thrust bearing 29 to compress the support spring 28. When the support spring 28 is compressed to its limit, the horizontal plate 15 closest to the unlocking sleeve 3 just passes through the moving slot 9 and moves to the other side of the moving plate 16. Then the moving plate 16 is released, the adapter spring 12 pushes the adapter block 11 to rotate and reset, and then the adapter block 11 drives the adapter... The matching rod 23 rotates and resets along the adapter hole 22, and the adapter block 11 drives the moving groove 9 to rotate and reset to a position that does not correspond to the horizontal plate 15 via the moving plate 16. Then, the connecting plate 13 and the horizontal plate 15 closest to the unlocking sleeve 3 cooperate to limit the unlocking sleeve 3 to one side of the moving plate 16. Then, the inner wall of the unlocking sleeve 3 no longer limits the outer end of the locking rod 7. Then, the clasp 4 is pulled to one side, and the clasp 4 will drive multiple locking rods 7 to move. Then, the inner wall of the lock groove 14 presses against the inner end of the locking rod 7. Due to the rounded corner design at the edge of the inner wall of the lock groove 14 and the end of the locking rod 7, the inner end of the locking rod 7 then exits from the lock groove 14. The locking lever 7 slides out, and the outer end of the locking lever 7 will drive the connecting spring 8 to stretch outward. At the same time, the movable spring 26 resets and pushes the movable plate 27, causing the sleeve 4 and the locking lever 6 to separate. Then, the sleeve 4 is pulled out, so that the inner end of the locking lever 7 slides out of the slot 5, and then the sleeve 4 completely disengages from the outside of the locking lever 6. At this time, the connecting spring 8 drives the locking lever 7 to slide and reset. Then, the other sleeve 4 is removed according to the above steps. Then, the mounting bracket 17 is removed from the side of the connecting bracket 2, so that the insert block 21 on the side of the mounting bracket 17 slides out of the slot 20, thereby realizing the removal of the gripping assembly 18.

[0041] When removing the gripping assembly 18 and mounting bracket 17, the new gripping assembly 18 along with the mounting bracket 17 is taken out. Then, the insert 21 on one side of the mounting bracket 17 is inserted into the slot 20 on one side of the connecting bracket 2. Simultaneously, the locking rod 6, fixedly connected to one side of the mounting bracket 17, passes through the pre-drilled mounting hole on the connecting bracket 2. Then, the sleeve 4 is fitted onto the outside of the locking rod 6, causing the sleeve 4 to drive the locking rod 7 into the slot 5. Then, the sleeve 4 is rotated clockwise, causing all the locking rods 7 to gradually enter the slot 5. The outer end of the locking rod 7 will cause the connecting spring 8 to stretch outwards. Then, during the rotation, the locking rod 7 will... Move to the position corresponding to the lock groove 14, then the connecting spring 8 drives the locking rod 7 to slide inward and insert the inner end of the locking rod 7 into the lock groove 14. When the collet 4 and the collet 6 cooperate to completely press the mounting bracket 17 and the connecting bracket 2 together, all the locking rods 7 move to the position corresponding to the original lock groove 14. Then the connecting spring 8 resets and pulls the locking rod 7 to slide inward and insert it into the original lock groove 14. Then the moving plate 16 is rotated forward again, so that the moving plate 16 drives the moving groove 9 and the thrust bearing 29 installed on one side to rotate forward again. The moving plate 16 also drives the adapter block 11 on one side to rotate forward again. Then the adapter block 11 drives a... The adapter rod 23 on the side rotates again along the adapter hole 22 in the forward direction, and the adapter block 11 and the fixing block 10 cooperate again to press the adapter spring 12. When the moving groove 9 rotates again to the position corresponding to the horizontal plate 15, the support spring 28 pushes the unlocking sleeve 3 to slide back to its original position along the guide rail 24 and the guide groove 25. Then the unlocking sleeve 3 will drive the three horizontal plates 15 to slide back to their original position through the connecting plate 13. When the support spring 28 is fully reset, the other two horizontal plates 15 just move to the sides of the moving plate 16 respectively. Then the moving plate 16 is released again, and the adapter spring 12 pushes the adapter block 11 to rotate back to its original position. The adapter block 11 then drives the adapter rod 23 to rotate along the adapter hole 22 in the forward direction. Rod 23 rotates in the opposite direction to reset, and adapter block 11 again drives adapter groove and thrust bearing 29 to rotate in the opposite direction to reset via adapter plate. At this time, connecting plate 13 and corresponding two horizontal plates 15 cooperate to limit and support unlock sleeve 3 to one side of moving plate 16. With guide rail 24 and guide groove 25 limiting unlock sleeve 3, unlock sleeve 3 cannot slide. Then, the inner wall of unlock sleeve 3 limits the outer end of locking rod 7, so that locking rod 7 cannot move. Then, locking rod 7 and locking groove 14 cooperate to lock clamp rod 6 and clamp sleeve 4, so that clamp sleeve 4 and clamp rod 6 cannot move relative to each other, thereby ensuring installation stability and ensuring the stable operation of electrical handling.

[0042] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. A robotic arm for handling electrical appliances, comprising a robotic arm assembly (1), characterized in that: The output end of the robotic arm assembly (1) is connected to a connecting frame (2). A quick-change device is provided on one side of the connecting frame (2). The quick-change device includes an unlocking sleeve (3), a retaining sleeve (4), a slot (5), a locking rod (6), a locking rod (7), and a connecting spring (8). The unlocking sleeve (3) is installed on the outside of the retaining sleeve (4), the retaining sleeve (4) is installed on the outside of the locking rod (6), the slot (5) is spirally opened on the outside of the locking rod (6), and multiple locking rods (7) are slidably arranged along the spiral array on the side wall of the retaining sleeve (4). The outer end of the locking rod (7) is connected to the outer wall of the retaining sleeve (4) through the connecting spring (8). A locking mechanism is installed on the outside of the retaining sleeve (4). The mechanism includes a moving groove (9), a fixed block (10), an adapter block (11), an adapter spring (12), a connecting plate (13), a lock groove (14), a horizontal plate (15), and a moving plate (16). The moving groove (9) is opened on the moving plate (16). The two ends of the adapter spring (12) are connected to the fixed block (10) and the adapter block (11) respectively. The connecting plate (13) is installed on one side of the unlocking sleeve (3). Multiple lock grooves (14) are opened in the card slot (5), and the inner end of the locking rod (7) is inserted into the lock groove (14). Three horizontal plates (15) are installed on one side of the connecting plate (13), and the moving plate (16) is installed on the outside of the card sleeve (4).

2. The robotic arm for handling electrical appliances according to claim 1, characterized in that: The connecting frame (2) is provided with a mounting frame (17) on one side, and a gripping assembly (18) is detachably provided on the mounting frame (17).

3. The robotic arm for handling electrical appliances according to claim 2, characterized in that: The robotic arm assembly (1) has a detachable base (19) on one side, and the robotic arm assembly (1) is detachably mounted on the base (19).

4. The robotic arm for handling electrical appliances according to claim 3, characterized in that: The connecting frame (2) has a slot (20) on one side, and the mounting frame (17) has a plug (21) fixed on one side. The plug (21) can be detachably inserted into the slot (20).

5. A robotic arm for handling electrical appliances according to any one of claims 1-4, characterized in that: The fixing block (10) has an adapter hole (22), and an adapter rod (23) is connected to one side of the adapter block (11). One end of the adapter rod (23) slides into the adapter hole (22).

6. A robotic arm for handling electrical appliances according to claim 5, characterized in that: The outer side of the card sleeve (4) is fixedly provided with a guide rail (24), and the inner side of the unlocking sleeve (3) is provided with a guide groove (25), which is adapted to the guide rail (24).

7. A robotic arm for handling electrical appliances according to claim 1, characterized in that: The inner side of the sleeve (4) is provided with a movable spring (26), and the two ends of the movable spring (26) are respectively connected to movable plates (27).

8. A robotic arm for handling electrical appliances according to claim 6, characterized in that: The unlocking sleeve (3) is connected to a support spring (28) on one side, and the moving plate (16) is detachably provided with a thrust bearing (29) on one side. The other end of the support spring (28) is connected to the thrust bearing (29).

Images