Mechanical arm capable of rapidly replacing tool head

Abstract

The utility model discloses a mechanical arm capable of quickly replacing a tool head, which belongs to the technical field of mechanical arms, and comprises a bottom plate connecting arm, the top of the bottom plate is fixedly connected with a fixed arm, the top of the fixed arm is fixedly provided with a first motor, the output end of the first motor is fixedly connected with a first screw rod, and the output end of the first screw rod is fixedly connected with a second screw rod. The outer surface of the first screw rod is in threaded connection with a first screw hole block, the first screw hole block is in sliding connection with the inner wall of the fixed arm, a dismounting and mounting supporting structure is arranged between the first screw hole block and the connecting arm, and an auxiliary clamping structure is arranged on one side of the connecting arm. And under the action of a rectangular clamping block and a rectangular clamping frame, a connecting arm and a first screw hole block can be subjected to auxiliary disassembly and assembly, meanwhile, under the action of a sliding block and a rectangular sliding frame, auxiliary supporting can be conducted on the rectangular clamping frame in cooperation with an auxiliary connecting plate, and then the bearing capacity of the rectangular clamping frame can be increased.

Description

Technical Field

[0001] This utility model belongs to the field of robotic arm technology, specifically a robotic arm for quick tool head changing. Background Technology

[0002] A robotic arm is a complex system with high precision, multiple inputs and multiple outputs, high nonlinearity, and strong coupling. Due to its unique operational flexibility, it has been widely used in industrial assembly, material handling, and safety and explosion protection.

[0003] Existing robotic arms consist of a robotic arm body and a drive mechanism. Under the action of the drive mechanism, the robotic arm can complete various activities, thereby fulfilling the requirements of handling or equipping, and thus improving the overall industrial production efficiency.

[0004] However, in actual use, the robotic arm will age and be damaged after long-term handling. At this time, the robotic arm needs to be disassembled and the tool head replaced. Traditional disassembly methods require removing and installing multiple bolts, increasing the overall disassembly steps. If the fastener method is used for fixing, the connection is prone to bending and detachment when the force is too great. In other words, the overall load-bearing capacity is not high and it is easy to bend. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To overcome the aforementioned shortcomings of the prior art, this utility model provides a quick-change tool head robotic arm, which solves the problem that in actual use, the robotic arm will age and be damaged after long-term handling and use. At this time, it is necessary to disassemble the robotic arm and replace the tool head. Traditional disassembly methods require the removal and installation of multiple bolts, increasing the overall disassembly steps. If a snap-fit ​​method is used for fixing, the connection is prone to bending and detachment when the force is too great, that is, the overall load-bearing capacity is not high and it is easy to bend.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a quick-change tool head robotic arm, comprising a base plate connecting arm, a fixed arm fixedly connected to the top of the base plate, a first motor fixedly mounted on the top of the fixed arm, a first screw fixedly connected to the output end of the first motor, a first screw hole block threadedly connected to the outer surface of the first screw, the first screw hole block slidably connected to the inner wall of the fixed arm, a disassembly and assembly support structure provided between the first screw hole block and the connecting arm, an auxiliary clamping structure provided on one side of the connecting arm, the disassembly and assembly support structure comprising a rectangular frame, the rectangular frame fixedly connected to one side of the first screw hole block, a rectangular block fixedly connected to one side of the connecting arm, the rectangular frame and the rectangular block engaging, the auxiliary clamping structure comprising a U-shaped plate, the U-shaped plate fixedly connected to one side of the connecting arm, a second motor fixedly mounted on one side of the U-shaped plate, a second screw fixedly connected to the output end of the second motor, the two ends of the second screw having opposite thread directions, and two second screw hole blocks symmetrically threadedly connected to the outer surface of the second screw.

[0009] As a further embodiment of this utility model: a first screw hole is provided on one inner wall of the rectangular card frame, a second screw hole is provided on one inner wall of the rectangular card block, and a threaded locking rod is provided on the inner wall of the first screw hole and the second screw hole.

[0010] As a further embodiment of this utility model: a rectangular sliding frame is fixedly connected to one side of the outer surface of the fixed arm, and a sliding block is slidably connected to the inner wall of the rectangular sliding frame.

[0011] As a further embodiment of this utility model: a fixing rod is fixedly connected to the inner wall of the rectangular sliding frame, and the outer surface of the fixing rod is slidably connected to the inner wall of the sliding block.

[0012] As a further embodiment of this utility model: an auxiliary connecting plate is fixedly connected to one side of the sliding block, and one side of the outer surface of the auxiliary connecting plate is fixedly connected to one side of the rectangular card frame.

[0013] As a further embodiment of this utility model: a rectangular groove is provided on one side of the U-shaped plate, and a rectangular slider is slidably connected to the inner wall of the rectangular groove. The rectangular slider is fixedly connected to the outer surface of the second screw hole block, and a connecting rod is fixedly connected to one side of the outer surface of the second screw hole block. One end of the connecting rod is fixedly connected to an mounting plate.

[0014] As a further embodiment of this utility model: a third screw is threadedly connected to the inner wall of the mounting plate, a clamping plate is rotatably connected to one end of the third screw, a rectangular protrusion is fixedly connected to one side of the clamping plate, and a limiting rod is fixedly connected to one side of the clamping plate, the limiting rod being slidably disposed on the inner wall of the mounting plate.

[0015] (III) Beneficial Effects

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] 1. This quick-change tool head robotic arm, through the setting of a disassembly and assembly support structure, can assist in the disassembly and assembly of the connecting arm and the first screw hole block under the action of the rectangular card block and the rectangular card frame. At the same time, under the action of the sliding block and the rectangular sliding frame, it can cooperate with the auxiliary connecting plate to provide auxiliary support for the rectangular card frame, thereby increasing its load-bearing capacity.

[0018] 2. This quick-change tool head robotic arm, by setting a second screw and a second screw hole block, can drive the mounting plate to move towards or away from each other, thereby driving the clamping plate to assist in clamping the object, and working with the rectangular protrusion to assist in fixing the object.

[0019] 3. This quick-change tool head robotic arm, by setting a third screw, can drive the clamping plate to move, thereby adjusting the position of the clamping plate, and can then work with the second screw and the second screw hole block for auxiliary limiting and fixing. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 2 This is a three-dimensional structural diagram of the fixed arm of this utility model;

[0022] Figure 3 This is a three-dimensional structural diagram of the connecting arm of this utility model;

[0023] Figure 4 This is a three-dimensional structural diagram of the clamping plate of this utility model;

[0024] In the diagram: 1. Base plate; 2. Fixed arm; 3. Connecting arm; 4. First motor; 5. First screw; 6. Disassembly and assembly support structure; 61. Rectangular frame; 62. Rectangular block; 63. First screw hole; 64. Second screw hole; 65. Threaded rod; 66. Rectangular slide frame; 67. Fixed rod; 68. Sliding block; 69. Auxiliary connecting plate; 7. Auxiliary clamping structure; 71. U-shaped plate; 72. Second motor; 73. Second screw; 74. Second screw hole block; 75. Rectangular slider; 76. Rectangular slide groove; 77. Connecting rod; 78. Mounting plate; 79. Third screw; 710. Clamping plate; 711. Limiting rod; 8. First screw hole block. Detailed Implementation

[0025] The technical solution of this patent will be further described in detail below with reference to specific embodiments.

[0026] like Figure 1-4As shown, this utility model provides a technical solution: a quick-change tool head robotic arm, including a base plate 1 and a connecting arm 3. A fixed arm 2 is fixedly connected to the top of the base plate 1, and a first motor 4 is fixedly installed on the top of the fixed arm 2. A first screw 5 is fixedly connected to the output end of the first motor 4. A first screw hole block 8 is threadedly connected to the outer surface of the first screw 5. The first screw 5 can drive the first screw hole block 8 to move, thereby cooperating with the movement of other components. The first screw hole block 8 is slidably connected to the inner wall of the fixed arm 2. A disassembly and assembly support structure 6 is provided between the first screw hole block 8 and the connecting arm 3. An auxiliary clamping structure 7 is provided on one side of the connecting arm 3. The disassembly and assembly support structure 6 includes a rectangular frame 61. The frame 61 is fixedly connected to one side of the first screw hole block 8. A rectangular clamping block 62 is fixedly connected to one side of the connecting arm 3. The rectangular clamping frame 61 and the rectangular clamping block 62 are engaged. The rectangular clamping frame 61 can cooperate with the rectangular clamping block 62 for auxiliary engagement. The auxiliary clamping structure 7 includes a U-shaped plate 71. The U-shaped plate 71 is fixedly connected to one side of the connecting arm 3. A second motor 72 is fixedly installed on one side of the U-shaped plate 71. A second screw 73 is fixedly connected to the output end of the second motor 72. The two ends of the second screw 73 have opposite thread directions. Two second screw hole blocks 74 are symmetrically threaded on the outer surface of the second screw 73. The second screw 73 can drive the second screw hole blocks 74 to move, and thus can cooperate with the movement of other components.

[0027] Specifically, such as Figures 2-3 As shown, a first screw hole 63 is provided on one inner wall of the rectangular frame 61, and a second screw hole 64 is provided on one inner wall of the rectangular block 62. Threaded locking rods 65 are provided on the inner walls of the first screw hole 63 and the second screw hole 64. The threaded locking rods 65 can cooperate with the first screw hole 63 and the second screw hole 64 for auxiliary fixation. A rectangular sliding frame 66 is fixedly connected to one side of the outer surface of the fixing arm 2. A sliding block 68 is slidably connected to the inner wall of the rectangular sliding frame 66. The sliding block 68 can slide on the inner wall of the rectangular sliding frame 66, thereby cooperating with other components to perform its function. A fixing rod 67 is fixedly connected to the inner wall of the rectangular sliding frame 66. The outer surface of the fixing rod 67 is slidably connected to the inner wall of the sliding block 68. An auxiliary connecting plate 69 is fixedly connected to one side of the sliding block 68. One side of the outer surface of the auxiliary connecting plate 69 is fixedly connected to one side of the rectangular frame 61. Under the action of the auxiliary connecting plate 69, the sliding block 68 can be driven to be fixed to the rectangular frame 61, thereby providing support.

[0028] Specifically, such as Figure 4As shown, a rectangular groove 76 is provided on one side of the U-shaped plate 71. A rectangular slider 75 is slidably connected to the inner wall of the rectangular groove 76. The rectangular slider 75 is fixedly connected to the outer surface of the second screw hole block 74. A connecting rod 77 is fixedly connected to one side of the outer surface of the second screw hole block 74. The second screw 73 can drive the second screw hole block 74 to move, which in turn can drive the connecting rod 77 to move, and thus cooperate with the movement of other components. One end of the connecting rod 77 is fixedly connected to a mounting plate 78. A third screw 79 is threadedly connected to the inner wall of the mounting plate 78. One end of the third screw 79 is rotatably connected to a clamping plate 710. A rectangular protrusion is fixedly connected to one side of the clamping plate 710. The third screw 79 can drive the clamping plate 710 to move, and thus cooperate with the movement of other components. A limit rod 711 is fixedly connected to one side of the clamping plate 710. The limit rod 711 is slidably disposed on the inner wall of the mounting plate 78.

[0029] The working principle of this utility model is as follows:

[0030] S1. When in use, the rectangular card block 62 is engaged with the rectangular card frame 61. At this time, the threaded card rod 65 is rotated and fixed with the first screw hole 63 and the second screw hole 64, thereby fixing the connecting arm 3 and the fixed arm 2.

[0031] S2. At this time, the second motor 72 is started, which causes the second screw 73 to drive the second screw hole block 74 to move, which in turn drives the rectangular slider 75 to slide on the inner wall of the rectangular slide groove 76. At this time, the mounting plate 78 and the clamping plate 710 can move, thereby clamping the object. When the object is not located in the middle of the two clamping plates 710 and it is inconvenient to move, the third screw 79 is rotated to allow the clamping plate 710 to move, thereby clamping the object.

[0032] S3. Start the first motor 4 so that the first screw 5 can drive the first screw hole block 8 to move, which in turn can drive the sliding block 68 to slide on the outer surface of the fixed rod 67.

[0033] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0034] The preferred embodiments of this patent have been described in detail above. However, this patent is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this patent.

Claims

1. A quick-change tool head robotic arm, comprising a base plate (1) and a connecting arm (3), characterized in that: A fixed arm (2) is fixedly connected to the top of the base plate (1). A first motor (4) is fixedly installed on the top of the fixed arm (2). A first screw (5) is fixedly connected to the output end of the first motor (4). A first screw hole block (8) is threadedly connected to the outer surface of the first screw (5). The first screw hole block (8) is slidably connected to the inner wall of the fixed arm (2). A disassembly and assembly support structure (6) is provided between the first screw hole block (8) and the connecting arm (3). An auxiliary clamping structure (7) is provided on one side of the connecting arm (3). The disassembly and assembly support structure (6) includes a rectangular frame (61). The rectangular frame (61) is connected to the first screw hole block (4) and the first screw hole block (5). A screw hole block (8) is fixedly connected to one side, and a rectangular clamping block (62) is fixedly connected to one side of the connecting arm (3). The rectangular clamping frame (61) is engaged with the rectangular clamping block (62). The auxiliary clamping structure (7) includes a U-shaped plate (71). The U-shaped plate (71) is fixedly connected to one side of the connecting arm (3). A second motor (72) is fixedly installed on one side of the U-shaped plate (71). A second screw (73) is fixedly connected to the output end of the second motor (72). The two ends of the second screw (73) have opposite thread directions. Two second screw hole blocks (74) are symmetrically threaded on the outer surface of the second screw (73).

2. The quick-change tool head robotic arm according to claim 1, characterized in that: The rectangular card frame (61) has a first screw hole (63) on one side of its inner wall, and the rectangular card block (62) has a second screw hole (64) on one side of its inner wall. The inner walls of the first screw hole (63) and the second screw hole (64) have threaded locking rods (65).

3. The quick-change tool head robotic arm according to claim 2, characterized in that: A rectangular slide frame (66) is fixedly connected to one side of the outer surface of the fixed arm (2), and a sliding block (68) is slidably connected to the inner wall of the rectangular slide frame (66).

4. A quick-change tool head robotic arm according to claim 3, characterized in that: The inner wall of the rectangular sliding frame (66) is fixedly connected to a fixing rod (67), and the outer surface of the fixing rod (67) is slidably connected to the inner wall of the sliding block (68).

5. A quick-change tool head robotic arm according to claim 3, characterized in that: An auxiliary connecting plate (69) is fixedly connected to one side of the sliding block (68), and one side of the outer surface of the auxiliary connecting plate (69) is fixedly connected to one side of the rectangular card frame (61).

6. A quick-change tool head robotic arm according to claim 1, characterized in that: A rectangular groove (76) is provided on one side of the U-shaped plate (71). A rectangular slider (75) is slidably connected to the inner wall of the rectangular groove (76). The rectangular slider (75) is fixedly connected to the outer surface of the second screw hole block (74). A connecting rod (77) is fixedly connected to one side of the outer surface of the second screw hole block (74). One end of the connecting rod (77) is fixedly connected to an mounting plate (78).

7. A quick-change tool head robotic arm according to claim 6, characterized in that: The inner wall of the mounting plate (78) is threaded with a third screw (79), one end of which is rotatably connected to a clamping plate (710). A rectangular protrusion is fixedly connected to one side of the clamping plate (710), and a limit rod (711) is fixedly connected to one side of the clamping plate (710). The limit rod (711) is slidably disposed on the inner wall of the mounting plate (78).

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