Mechanical arm with quick connection mechanism

Abstract

The utility model relates to the field of mechanical arms, in particular to a mechanical arm with a quick connection mechanism, and adopts the technical scheme that the mechanical arm comprises a mechanical arm body and a chuck clamp, the chuck clamp is connected to the tail end of the mechanical arm body, a connecting seat is mounted at the tail end of the mechanical arm body, and a fixing seat is mounted at one end of the chuck clamp. A connecting base is arranged at the upper end of the fixing base, a lifting assembly is arranged in the connecting base, a connecting inserting hole is formed in the middle of the fixing base, and limiting assemblies are symmetrically installed on the two sides of the connecting inserting hole. The connecting chuck clamp has the advantages that when a connecting chuck clamp needs to be installed, a plug at the lower end of the connecting base can be aligned with the connecting inserting hole in the upper end of the fixing base; then the plug descends to be inserted into a connecting insertion hole, an air cylinder drives a first disc and a second disc to move upwards through a piston rod, at the moment, an L-shaped clamping strip rotates to be changed into a V shape, and when the L-shaped clamping strip is changed into the V shape, one end, extending out of a movable groove, of the L-shaped clamping strip limits the position below a slope convex block, so that the plug cannot be pulled out of a positioning groove.

Description

Technical Field

[0001] The utility model relates to the field of mechanical arms, in particular to a mechanical arm with a quick-connect mechanism. Background Art

[0002] A robotic arm refers to a complex system with high precision, multiple inputs, multiple outputs, high nonlinearity, and strong coupling. Due to its unique operational flexibility, it has been widely used in industrial assembly, safety and explosion-proof and other fields. A chuck fixture is installed at the end of the existing robotic arm to facilitate the robotic arm to manipulate the chuck fixture to move and clamp the material. After the chuck fixture clamps the material, it can drive the material to a designated location for transportation or palletizing.

[0003] Most of the existing chuck fixtures are directly fixed on the end of the robotic arm, and some are usually connected by screws and bolts. This method has a good fixing effect, but the positioning effect is poor. It also requires manual installation and disassembly one by one with the help of tools such as bolt cutters. The operation is inconvenient and inefficient. Some of them use magnetic connection or pneumatic connection, but the fixing effect of these connection methods is relatively simple and cannot be reinforced for the second time, resulting in unsatisfactory fixing effect after connection.

[0004] Therefore, it is necessary to invent a mechanical arm with a quick-connect mechanism. Utility Model Content

[0005] The purpose of the utility model is to solve the problems raised in the above background technology.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a mechanical arm with a quick-connect mechanism, comprising a mechanical arm and a chuck fixture, wherein the chuck fixture is connected to the end of the mechanical arm, a connecting seat is installed at the end of the mechanical arm, a fixing seat is installed at one end of the chuck fixture, a lifting assembly is arranged inside the connecting seat, a connecting socket is opened in the middle of the fixing seat, and limit assemblies are symmetrically installed on both sides of the connecting socket;

[0007] A protective shell is installed on the upper end of the connecting seat, a plug is installed in the middle of the lower end of the connecting seat, positioning rods are installed on both sides of the lower end of the connecting seat, a movable groove is opened on the surface of the plug, and an L-shaped card strip is hinged inside the movable groove.

[0008] The L-shaped card strip will be transformed back into the L-shaped structure, and since the limit assembly is not pressed tightly, the limit assembly will also be away from the positioning rod. At this time, the mechanical arm only needs to drive the connecting seat to move up, and the plug and the fixed seat can be separated, which is simple and convenient.

[0009] Preferably, a slot is provided on one side surface of the positioning rod.

[0010] Based on the above features: when the limiting component is pressed tightly, one end of the limiting component is inserted into the card slot to limit and fix the positioning rod.

[0011] Preferably, positioning grooves are provided on both sides of the upper end of the fixing seat, and the positioning rods are movably plugged into the positioning grooves.

[0012] Based on the above features: when the connection base and the plug move downward, the positioning rod can be inserted into the internal positioning connection of the positioning groove, and when the connection base and the plug move upward, the positioning rod will also move upward and leave the positioning groove.

[0013] Preferably, the lifting assembly includes a cylinder and a piston rod installed at the output end of the cylinder, and the other end of the piston rod is installed with a first disc and a second disc, and a gap is left between the first disc and the second disc.

[0014] Based on the above features: when the cylinder drives the first disc and the second disc to move upward through the piston rod, the first disc and the second disc will drive the L-shaped clip to rotate. At this time, the L-shaped clip will become a V-shape, making it convenient for the end of the L-shaped clip to extend out of the movable groove away from the first disc and the second disc.

[0015] Preferably, an inclined surface protrusion is installed at the upper end of the connecting socket, empty slots are opened on both sides of the connecting socket, and through slots are opened on both sides of the empty slot.

[0016] Based on the above features: when the L-shaped card strip is about to become a V-shape, one end of the L-shaped card strip extending out of the movable slot will be located below the inclined protrusion for limiting the position. At this time, the plug will not be able to be pulled out of the positioning slot, and the limiting component is located inside the empty slot, and both ends of the limiting component can pass through the through slot to facilitate the displacement of the limiting component to the left and right.

[0017] Preferably, the empty slot is located between the positioning slot and the connection jack.

[0018] Based on the above features: After the plug is inserted into the connection jack, one end of the empty slot close to the connection jack will be aligned with the movable slot and the L-shaped strip, and one end of the empty slot close to the positioning slot will be aligned with the card slot on one side of the positioning rod.

[0019] Preferably, the limiting component includes a guide rod and a buffer spring, and the buffer spring is sleeved outside the guide rod.

[0020] Based on the above features: When the L-shaped strip becomes V-shaped, the protruding end of the L-shaped strip will abut against the guide rod. At this time, the guide rod will move and extend towards the positioning slot, and the buffer spring will be compressed and deformed. If the positioning rod is inserted inside the positioning slot, the finally extended end of the guide rod will be stuck into the card slot for fixation. When the L-shaped strip returns to the L-shaped, the buffer spring will rebound the guide rod, causing the guide rod to move away from the positioning slot. At this time, the guide rod will also disengage from the card slot.

[0021] The beneficial effects of the present utility model are as follows:

[0022] 1. It is convenient for the robotic arm and the chuck fixture to be quickly disassembled and assembled. When it is necessary to install and connect the chuck fixture, the plug at the lower end of the connecting seat can be aligned with the connection jack at the upper end of the fixed seat, and then the plug is lowered and inserted into the connection jack. The air cylinder drives the first disc and the second disc to move upward through the piston rod. At this time, the L-shaped strip will rotate and become V-shaped. When the L-shaped strip becomes V-shaped, the end of the L-shaped strip extending out of the movable slot will be located below the inclined surface convex block for limiting, so that the plug cannot be pulled out of the positioning slot. When it is necessary to disassemble, the air cylinder can drive the first disc and the second disc to move downward through the piston rod. At this time, the L-shaped strip will be pushed back to the L-shaped structure. Finally, only need the robotic arm to drive the connecting seat to move upward, and the plug can be separated from the fixed seat, which is simple and convenient.

[0023] 2. When the connecting seat moves downward, the positioning rod will also be inserted into the positioning slot, so that the card slot on one side of the positioning rod is aligned with the empty slot. When the L-shaped strip rotates and becomes V-shaped, the protruding end of the L-shaped strip will abut against the guide rod. At this time, the guide rod will compress the buffer spring and deform, and one end of the guide rod will extend out and be stuck into the card slot for fixation. When the L-shaped strip is pushed back to the L-shaped structure, the buffer spring will rebound the guide rod, causing the guide rod to disengage from the card slot, which is convenient to improve the fixing effect after the connecting seat and the fixed seat are connected. Description of the Drawings

[0024] Figure 1 It is a schematic diagram of the overall structure of a robotic arm with a quick connection mechanism provided by the present utility model;

[0025] Figure 2Connection state diagram of a robotic arm connecting seat with a quick connection mechanism provided by the present utility model and a fixed seat;

[0026] Figure 3 Disassembly state diagram of a robotic arm connecting seat with a quick connection mechanism provided by the present utility model and a fixed seat;

[0027] Figure 4 Schematic structural diagram of a robotic arm lifting assembly with a quick connection mechanism provided by the present utility model;

[0028] Figure 5 A robotic arm with a quick connection mechanism provided by the present utility model Figure 3 Partial enlarged structural diagram at position A in

[0029] In the figure: 1, robotic arm; 2, connecting seat; 21, protective housing; 22, plug; 23, positioning rod; 231, card slot; 24, movable slot; 25, L-shaped card strip; 3, chuck fixture; 4, fixed seat; 41, positioning slot; 5, lifting assembly; 51, cylinder; 52, piston rod; 53, first disc; 54, second disc; 6, connection jack; 61, inclined surface convex block; 62, empty slot; 63, through slot; 7, limiting assembly; 71, guide rod; 72, buffer spring. Specific embodiments

[0030] The following describes the preferred embodiments of the present utility model with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only for the purpose of illustration and explanation of the present utility model, and are not used to limit the present utility model.

[0031] Referring to the attached Figures 1-5 , a robotic arm with a quick connection mechanism provided by the present utility model includes a robotic arm 1 and a chuck fixture 3. The chuck fixture 3 is connected to the end of the robotic arm 1. A connecting seat 2 is installed at the end of the robotic arm 1. A fixed seat 4 is installed at one end of the chuck fixture 3 (the fixed seat 4 can be fixedly arranged at the connection end of each chuck fixture 3 that needs to be used in advance). A lifting assembly 5 is arranged inside the connecting seat 2. A connection jack 6 is opened in the middle of the fixed seat 4. Limiting assemblies 7 are symmetrically installed on both sides of the connection jack 6;

[0032] A protective housing 21 is installed at the upper end of the connecting seat 2. A plug 22 is installed in the middle at the lower end of the connecting seat 2. Positioning rods 23 are installed on both sides at the lower end of the connecting seat 2. A movable slot 24 is opened on the surface of the plug 22. An L-shaped card strip 25 is hinged inside the movable slot 24.

[0033] A plurality of different types of chuck fixtures 3 can be placed on one side of the robot arm 1 (only one type of chuck fixture 3 is shown in the present application, and the other chuck fixtures 3 are not shown, which is explained here). When the connecting chuck fixture 3 needs to be installed, the plug 22 at the lower end of the connecting seat 2 can be aligned with the connecting socket 6 at the upper end of the fixing seat 4, and then the plug 22 can be lowered and inserted into the connecting socket 6. When the plug 22 is completely inserted, the positioning rod 23 will also be located on the inner walls of both sides of the fixing seat 4. At this time, the lifting component 5 can be lifted upward to rotate the L-shaped card strip 25 inside the movable groove 24, and the rotating L-shaped card strip 25 will become a V-shaped structure, so that the L One end of the L-shaped card strip 25 can protrude outward from the movable groove 24. At this time, the plug 22 will not be able to detach from the fixing seat 4 by itself, and one end of the protruding L-shaped card strip 25 will press against the limit component 7, so that the limit component 7 moves to limit the positioning rod 23, thereby improving the fixing effect and facilitating the rapid connection between the robot arm 1 and the chuck fixture 3. When disassembly is required, only the lifting component 5 needs to be lowered. At this time, the L-shaped card strip 25 will be transformed back into an L-shaped structure. Since the limit component 7 is not pressed tightly, the limit component 7 will also be away from the positioning rod 23. At this time, the robot arm 1 only needs to drive the connecting seat 2 to move up to separate the plug 22 from the fixing seat 4, which is simple and convenient.

[0034] Preferably, a slot 231 is formed on one side surface of the positioning rod 23 .

[0035] When the limiting assembly 7 is pressed tightly, one end of the limiting assembly 7 is inserted into the slot 231 to limit and fix the positioning rod 23 .

[0036] Preferably, positioning grooves 41 are provided on both sides of the upper end of the fixing seat 4 , and the positioning rods 23 are movably plugged into the positioning grooves 41 .

[0037] When the connection base 2 and the plug 22 move downward, the positioning rod 23 can be inserted into the internal positioning connection of the positioning groove 41 . When the connection base 2 and the plug 22 move upward, the positioning rod 23 will also move upward and disengage from the positioning groove 41 .

[0038] Preferably, the lifting assembly 5 includes a cylinder 51 and a piston rod 52 installed at the output end of the cylinder 51 , and a first disc 53 and a second disc 54 are installed at the other end of the piston rod 52 , with a gap left between the first disc 53 and the second disc 54 .

[0039] The first disc 53 and the second disc 54 at the lower end of the piston rod 52 are located inside the plug 22, and the gap between the first disc 53 and the second disc 54 is aligned with one end of the L-shaped bar 25, so that one end of the L-shaped bar 25 is inserted into the inner wall of the gap. At this time, the L-shaped bar 25 cannot rotate out of the movable groove 24 by itself. When the cylinder 51 drives the first disc 53 and the second disc 54 to move upward through the piston rod 52, the first disc 53 and the second disc 54 will drive the L-shaped bar 25 to rotate. At this time, the L-shaped bar 25 will become V-shaped, which is convenient for the end of the L-shaped bar 25 away from the first disc 53 and the second disc 54 to extend out of the movable groove 24.

[0040] Preferably, a beveled convex block 61 is installed at the upper end of the connection jack 6, empty grooves 62 are opened on both sides of the connection jack 6, and through grooves 63 are opened on both sides of the empty grooves 62.

[0041] When the L-shaped bar 25 becomes V-shaped, the end of the L-shaped bar 25 extending out of the movable groove 24 will be located below the beveled convex block 61 for limiting. At this time, the plug 22 cannot be pulled out of the positioning groove 41, and the limiting component 7 is located inside the empty groove 62, and both ends of the limiting component 7 can pass through the through groove 63, which is convenient for the limiting component 7 to move left and right.

[0042] Preferably, the empty groove 62 is located between the positioning groove 41 and the connection jack 6.

[0043] After the plug 22 is inserted into the connection jack 6, the end of the empty groove 62 close to the connection jack 6 will be aligned with the movable groove 24 and the L-shaped bar 25, and the end of the empty groove 62 close to the positioning groove 41 will be aligned with the card slot 231 on one side of the positioning rod 23.

[0044] Preferably, the limiting component 7 includes a guide rod 71 and a buffer spring 72, and the buffer spring 72 is sleeved outside the guide rod 71.

[0045] The guide rod 71 passes through the empty slot 62 and the through slot 63 movably. The buffer spring 72 sleeved outside the guide rod 71 is located inside the empty slot 62. One side of the buffer spring 72 close to the connection jack 6 is fixedly connected to the outside of the guide rod 71, and the other side of the buffer spring 72 close to the positioning slot 41 is fixedly connected to the inner wall of the empty slot 62. When the L-shaped latch 25 does not turn into a V shape, one end of the guide rod 71 far from the positioning slot 41 will extend into the connection jack 6, and one end of the guide rod 71 close to the positioning slot 41 will retract to the inside of the through slot 63. When the L-shaped latch 25 turns into a V shape, the extended end of the L-shaped latch 25 will abut against the guide rod 71. At this time, the guide rod 71 will move and extend towards the positioning slot 41, and the buffer spring 72 will be squeezed and deformed. If the positioning rod 23 is inserted inside the positioning slot 41, the finally extended end of the guide rod 71 will be clamped into the card slot 231 for fixation. When the L-shaped latch 25 turns back into an L shape, the buffer spring 72 will rebound the guide rod 71, causing the guide rod 71 to move towards the side away from the positioning slot 41. At this time, the guide rod 71 will also disengage from the card slot 231.

[0046] The using process of the utility model is as follows: When it is necessary to install the connection chuck fixture 3, the plug 22 at the lower end of the connection seat 2 can be aligned with the connection jack 6 at the upper end of the fixed seat 4 first, and then the plug 22 is lowered and inserted into the connection jack 6. At this time, the positioning rod 23 will also be inserted into the inside of the positioning slot 41, so that the card slot 231 on one side of the positioning rod 23 is aligned with the empty slot 62. Then the air cylinder 51 drives the first disc 53 and the second disc 54 to move upward through the piston rod 52. At this time, the L-shaped latch 25 will rotate and turn into a V shape. When the L-shaped latch 25 is about to turn into a V shape, the extended end of the L-shaped latch 25 extending out of the movable slot 24 will be located below the inclined surface convex block 61 for limit, so that the plug 22 cannot be pulled out of the positioning slot 41. At the same time, the extended end of the L-shaped latch 25 will abut against the guide rod 71. At this time, the guide rod 71 will move and extend towards the positioning slot 41, and the finally extended end of the guide rod 71 will be clamped into the card slot 231 for fixation. When it is necessary to disassemble, the air cylinder 51 can drive the first disc 53 and the second disc 54 to move downward through the piston rod 52. At this time, the L-shaped latch 25 will be pushed back into an L-shaped structure. At the same time, the buffer spring 72 will rebound the guide rod 71, causing the guide rod 71 to disengage from the card slot 231. Finally, only the robotic arm 1 needs to drive the connection seat 2 to move upward, and the plug 22 can be separated from the fixed seat 4.

[0047] The above are only the preferred embodiments of the utility model. Any person skilled in the art may modify the utility model by using the technical solutions described above or modify it into an equivalent technical solution. Therefore, any simple modification or equivalent replacement made according to the technical solutions of the utility model falls within the scope of protection required by the utility model.

Claims

1. A robotic arm with a quick-connect mechanism, comprising a robotic arm (1) and a chuck fixture (3), wherein the chuck fixture (3) is connected to the end of the robotic arm (1), characterized in that: A connecting seat (2) is installed at the end of the mechanical arm (1), a fixing seat (4) is installed at one end of the chuck fixture (3), a lifting assembly (5) is arranged inside the connecting seat (2), a connecting socket (6) is opened in the middle of the fixing seat (4), and limit assemblies (7) are symmetrically installed on both sides of the connecting socket (6); A protective shell (21) is installed at the upper end of the connection seat (2), a plug (22) is installed in the middle of the lower end of the connection seat (2), positioning rods (23) are installed on both sides of the lower end of the connection seat (2), a movable groove (24) is opened on the surface of the plug (22), and an L-shaped clamping strip (25) is hinged inside the movable groove (24).

2. A mechanical arm with a quick-connect mechanism according to claim 1, characterized in that: A clamping groove (231) is provided on one side surface of the positioning rod (23).

3. A mechanical arm with a quick-connect mechanism according to claim 1, characterized in that: Positioning grooves (41) are provided on both sides of the upper end of the fixing seat (4), and the positioning rods (23) are movably plugged into the positioning grooves (41).

4. The mechanical arm with a quick-connect mechanism according to claim 1, characterized in that: The lifting assembly (5) comprises a cylinder (51) and a piston rod (52) mounted on the output end of the cylinder (51); a first disc (53) and a second disc (54) are mounted on the other end of the piston rod (52); a gap is left between the first disc (53) and the second disc (54).

5. The mechanical arm with a quick-connect mechanism according to claim 3, characterized in that: An inclined surface protrusion (61) is installed at the upper end of the connecting socket (6), empty slots (62) are provided on both sides of the connecting socket (6), and through slots (63) are provided on both sides of the empty slot (62).

6. A mechanical arm with a quick-connect mechanism according to claim 5, characterized in that: The empty slot (62) is located between the positioning slot (41) and the connecting socket (6).

7. The mechanical arm with a quick-connect mechanism according to claim 1, characterized in that: The limiting assembly (7) comprises a guide rod (71) and a buffer spring (72), wherein the buffer spring (72) is sleeved outside the guide rod (71).

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