Mechanical arm with grabbing function

Abstract

The utility model discloses a mechanical arm with a grabbing function, and relates to the technical field of mechanical arms, the mechanical arm with the grabbing function comprises a mechanical arm main body, the end part of the mechanical arm main body is fixedly provided with a mounting rack, the left side of the mounting rack is provided with a left clamping assembly, and the right side of the mounting rack is provided with a right clamping assembly; the right clamping assembly comprises a fixing plate, the fixing plate is slidably connected with the side face of the mounting frame, a mounting base is fixedly mounted at the bottom of the fixing plate, a first motor is fixedly embedded in the mounting base, and a rotating shaft is fixedly mounted on an output shaft of the first motor. According to the mechanical arm with the grabbing function, an output shaft of a first motor drives a rotating shaft to rotate, so that rotary clamping of a left clamping plate and a right clamping plate is achieved under cooperation of a first bevel gear, a second bevel gear and a third bevel gear, the clamping area is increased, and therefore the clamping effect on objects of different shapes can be achieved; and meanwhile, the extension frame can adapt to objects of different sizes.

Description

Technical Field

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

[0002] A robotic arm is a machine device that can perform similar movements to a human arm. It consists of multiple joints and can move and manipulate objects in three-dimensional space. It can be used for small batch production to improve production efficiency. In addition to dispensing operations, it can also be used for various tasks such as UV irradiation, part placement, screw locking, circuit board cutting, etc.

[0003] The utility model patent disclosed as CN218576222U discloses a mechanical arm with a grasping function, including a mechanical arm body, a mounting plate fixedly mounted at the end of the mechanical arm body, a protective shell fixedly mounted at one end of the adjustment component, and a first clamping component fixedly mounted at both ends of the adjustment component, and the first clamping component corresponds to the position of the fixed plate. The above application document adopts the design that the fixed plate is fixedly mounted at both ends of the mounting plate, and the second clamping component is arranged on the adjustment groove on the fixed plate. The driving motor can drive the toothed plate to move through the gear, but the clamping effect is poor for irregular or round objects. Utility Model Content

[0004] In view of the shortcomings of the prior art, the utility model provides a mechanical arm with a grasping function, which solves the problems raised in the above background technology. To achieve the above purpose, the utility model is implemented through the following technical solutions: a mechanical arm with a grasping function, comprising a mechanical arm body, a mounting frame fixedly mounted on the end of the mechanical arm body, a left clamping assembly arranged on the left side of the mounting frame, and a right clamping assembly arranged on the right side of the mounting frame;

[0005] The right clamping assembly includes a fixed plate, which is slidably connected to the side of the mounting frame, a mounting seat is fixedly installed on the bottom of the fixed plate, and a motor 1 is embedded in the mounting seat. A rotating shaft is fixedly installed on the output shaft of the motor 1, a right clamping plate is fixedly installed on the outer side of the rotating shaft, a bevel gear 1 is fixedly installed on the upper side of the right clamping plate, a side of the fixed plate close to the rotating shaft is rotatably connected to a bevel gear 2, a left clamping plate is rotatably connected to the outer side of the middle part of the rotating shaft, a bevel gear 3 is fixedly installed on the side of the left clamping plate close to the bevel gear 2, the bevel gear 1, bevel gear 2 and bevel gear 3 are all meshingly connected, and an extension frame is slidably connected to the left clamping plate and the right clamping plate on the side away from the rotating shaft.

[0006] Preferably, a serrated anti-skid pad is fixedly mounted on one side of the extension frame away from the fixed plate, and the rotating shaft is located in the middle of the fixed plate. The anti-skid pad can provide a good anti-skid effect on the sides of objects of different shapes.

[0007] Preferably, a cylinder is fixedly installed on the top of the left clamping plate and the right clamping plate, and a limiting plate is fixedly installed on the upper part of the fixed plate close to the mounting frame. The limiting plate is slidably connected to the left clamping plate and the right clamping plate through the cylinder, and the limiting plate can have a better limiting effect on the rotation of the left clamping plate and the right clamping plate.

[0008] Preferably, the limit plate is rotatably connected to the rotating shaft, and the bevel gear three is rotatably connected to the rotating shaft, so that the rotation of the rotating shaft will not affect the bevel gear three.

[0009] Preferably, the mounting frame is embedded with motor 2, the output shaft of motor 2 is fixedly mounted with a common gear, the side of the left clamping assembly is fixedly mounted with rack 2, rack 2 is slidably connected to the bottom side of the mounting frame, a side of the fixed plate close to the mounting frame is fixedly mounted with rack 1, rack 1 is slidably connected to the bottom side of the mounting frame, the common gear is meshed with rack 1 and rack 2, and motor 2 drives rack 1 and rack 2 to move horizontally through the common gear.

[0010] Preferably, the common gear is rotatably connected to the bottom side of the mounting frame, and the length of the rack 2 is longer than that of the rack 1, so that the rotation of the common gear is more stable.

[0011] The utility model provides a mechanical arm with a grasping function, which has the following beneficial effects:

[0012] (1) The utility model drives the rotating shaft to rotate through the output shaft of the motor 1, thereby realizing the rotation clamping of the left clamping plate and the right clamping plate under the cooperation of the bevel gear 1, the bevel gear 2 and the bevel gear 3, thereby increasing the clamping area, so that objects of different shapes can be clamped, and the extension frame can adapt to objects of different sizes.

[0013] (2) The utility model uses the output shaft of the motor 2 to drive the ordinary gear to rotate, and the action force between the gears drives the rack 1 and the rack 2 to move in opposite directions, so that the distance between the left clamping component and the right clamping component is increased, so that objects of different widths can be clamped. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional schematic diagram of the entire utility model;

[0015] Figure 2 This is a schematic diagram of the right clamping assembly of the utility model;

[0016] Figure 3 This is a schematic diagram of the left clamping plate and bevel gear of the utility model;

[0017] Figure 4 It is an exploded schematic diagram of rack 1 and rack 2 of the utility model;

[0018] Figure 5 For this utility model Figure 4 A is an enlarged schematic diagram.

[0019] In the figure: 1. Robot arm body; 2. Mounting frame; 3. Left clamping assembly; 4. Fixing plate; 5. Mounting seat; 6. Motor 1; 7. Rotating shaft; 8. Bevel gear 1; 9. Bevel gear 2; 10. Bevel gear 3; 11. Left clamping plate; 12. Right clamping plate; 13. Limiting plate; 14. Extension frame; 15. Motor 2; 16. Ordinary gear; 17. Rack 1; 18. Rack 2. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0021] Embodiment 1

[0022] See also Figure 1-4 A mechanical arm with a grasping function comprises a mechanical arm body 1, a mounting frame 2 is fixedly mounted on the end of the mechanical arm body 1, a left clamping assembly 3 is arranged on the left side of the mounting frame 2, and a right clamping assembly is arranged on the right side of the mounting frame 2;

[0023] The right clamping assembly includes a fixed plate 4, which is slidably connected to the side of the mounting frame 2, a mounting seat 5 is fixedly installed at the bottom of the fixed plate 4, and a motor 6 is embedded in the mounting seat 5. A rotating shaft 7 is fixedly installed on the output shaft of the motor 6, a right clamping plate 12 is fixedly installed on the outer side of the rotating shaft 7, and a bevel gear 18 is fixedly installed on the upper side of the right clamping plate 12. A side of the fixed plate 4 close to the rotating shaft 7 is rotatably connected with a bevel gear 2 9, a left clamping plate 11 is rotatably connected to the outer side of the middle part of the rotating shaft 7, and a cylinder is fixedly installed on the top of the left clamping plate 11 and the right clamping plate 12, a limiting plate 13 is fixedly installed on the upper part of one side of the fixed plate 4 close to the mounting frame 2, and the limiting plate 13 is slidably connected to the left clamping plate 11 and the right clamping plate 12 through the cylinder, and the limiting plate 13 can have a good limiting effect on the rotation of the left clamping plate 11 and the right clamping plate 12, and a bevel gear 3 10 is fixedly installed on the side of the left clamping plate 11 close to the bevel gear 2 9 , bevel gear 1 8, bevel gear 2 9, and bevel gear 3 10 are all meshed and connected, the limit plate 13 is rotatably connected to the rotating shaft 7, and the bevel gear 3 10 is rotatably connected to the rotating shaft 7, so that the rotation of the rotating shaft 7 will not affect the bevel gear 3 10, and the left clamping plate 11 and the right clamping plate 12 are slidably connected to the side of the rotating shaft 7 away from the rotating shaft 7, and the side of the extension frame 14 away from the fixed plate 4 is fixedly installed with a serrated anti-skid pad, and the rotating shaft 7 is located in the middle of the fixed plate 4. The anti-skid pad can play a good anti-skid effect on the sides of objects of different shapes, and the rotating shaft 7 is driven to rotate by the output shaft of the motor 1 6, so that the left clamping plate 11 and the right clamping plate 12 are rotated and clamped with the cooperation of the bevel gear 1 8, the bevel gear 2 9, and the bevel gear 3 10, thereby increasing the clamping area, so that objects of different shapes can be clamped, and at the same time, the extension frame 14 can adapt to objects of different sizes.

[0024] During use, the robot arm body 1 is operated normally. When an object needs to be grasped, the motor 16 is started in the positive direction according to the different shapes of the object. The output shaft of the motor 16 drives the rotating shaft 7 to rotate, thereby driving the bevel gear 18 to rotate through the rotating shaft 7. The rotation of the bevel gear 18 drives the right clamping plate 12 to rotate, the bevel gear 18 drives the bevel gear 29 to rotate, and the rotation of the bevel gear 29 drives the bevel gear 3 10 to rotate, and the rotation direction of the bevel gear 3 10 is opposite to that of the bevel gear 18. The bevel gear 3 10 drives the left clamping plate 11 to rotate. At this time, the angle between the left clamping plate 11 and the right clamping plate 12 gradually decreases, and the left clamping plate 11 and the right clamping plate 12 are rotated. The cylinder on the upper part of the plate 12 slides in the groove at the bottom of the limit plate 13 until the side of the object is clamped, thereby increasing the clamping area, so that objects of different shapes can be clamped. When the object to be grasped is a plane, the motor 6 is started in reverse, and the angle between the left clamping plate 11 and the right clamping plate 12 is gradually increased to one hundred and eighty degrees under the drive of the output shaft. When the object is too long, the extension frame 14 is manually displaced in the direction away from the rotating shaft 7, so that the extension frame 14 can adapt to objects of different sizes. This device enables some round or special-shaped objects to be well grasped.

[0025] Embodiment 2

[0026] See also Figure 5 On the basis of the first embodiment, the mounting frame 2 is embedded with a second motor 15, and a common gear 16 is fixedly installed on the output shaft of the second motor 15. A rack 2 18 is fixedly installed on the side of the left clamping assembly 3. The rack 2 18 is slidably connected to the bottom side of the mounting frame 2. A rack 17 is fixedly installed on the side of the fixed plate 4 close to the mounting frame 2. The rack 1 17 is slidably connected to the bottom side of the mounting frame 2. The common gear 16 is meshed with the rack 1 17 and the rack 2 18. The motor 2 15 drives the rack 1 17 and the rack 2 18 to move horizontally through the common gear 16. The common gear 16 is rotatably connected to the bottom side of the mounting frame 2. The length of the rack 2 18 is longer than that of the rack 1 17, so that the rotation of the common gear 16 is more stable. The utility model uses the output shaft of the second motor 15 to drive the common gear 16 to rotate, and drives the rack 1 17 and the rack 2 18 to move back to each other through the force between the gears, so that the distance between the left clamping assembly 3 and the right clamping assembly is increased, so that objects of different widths can be clamped.

[0027] When in use, on the basis of Example 1, when the width of the object exceeds the distance between the left clamping assembly 3 and the right clamping assembly, the motor 2 15 is started in the forward direction to rotate its output shaft clockwise, thereby driving the common gear 16 to rotate clockwise, and the common gear 16 drives the rack 1 17 and the rack 2 18 to move in opposite directions through the action force between the gears, and the rack 2 18 drives the left clamping assembly 3 to move away from the mounting frame 2, while the rack 1 17 drives the fixing plate 4 to move away from the mounting frame 2, so that the distance between the left clamping assembly 3 and the right clamping assembly is increased, so that objects of different widths can be clamped. When resetting is required, the motor 2 15 is started in the reverse direction, and the common gear 16 is driven by the output shaft to rotate counterclockwise, so that the distance between the left clamping assembly 3 and the right clamping assembly is reduced.

[0028] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A robotic arm with a grasping function, comprising a robotic arm body (1), characterized in that: A mounting frame (2) is fixedly mounted on the end of the mechanical arm body (1); a left clamping assembly (3) is arranged on the left side of the mounting frame (2); and a right clamping assembly is arranged on the right side of the mounting frame (2); The right clamping assembly comprises a fixing plate (4), the fixing plate (4) is slidably connected to the side of the mounting frame (2), a mounting seat (5) is fixedly installed at the bottom of the fixing plate (4), a motor (6) is embedded in the mounting seat (5), a rotating shaft (7) is fixedly installed on the output shaft of the motor (6), a right clamping plate (12) is fixedly installed on the outer side of the rotating shaft (7), a bevel gear (8) is fixedly installed on the upper side of the right clamping plate (12), a side of the fixing plate (4) close to the rotating shaft (7) is rotatably connected to a bevel gear (9) is rotatably connected to a left clamping plate (11) on the outer side of the middle part of the rotating shaft (7), a bevel gear (10) is fixedly installed on the side of the left clamping plate (11) close to the bevel gear (9), the bevel gear (8), the bevel gear (9) and the bevel gear (10) are all meshingly connected, and an extension frame (14) is slidably connected to the side of the left clamping plate (11) and the right clamping plate (12) away from the rotating shaft (7).

2. The mechanical arm with grasping function according to claim 1, characterized in that: A sawtooth-shaped anti-skid pad is fixedly mounted on one side of the extension frame (14) away from the fixed plate (4), and the rotating shaft (7) is located in the middle of the fixed plate (4).

3. The mechanical arm with grasping function according to claim 2, characterized in that: A cylinder is fixedly installed on the top of the left clamping plate (11) and the right clamping plate (12); a limit plate (13) is fixedly installed on the upper part of one side of the fixing plate (4) close to the mounting frame (2); and the limit plate (13) is slidably connected to the left clamping plate (11) and the right clamping plate (12) via the cylinder.

4. The mechanical arm with grasping function according to claim 3, characterized in that: The limit plate (13) is rotationally connected to the rotating shaft (7), and the bevel gear three (10) is rotationally connected to the rotating shaft (7).

5. The mechanical arm with grasping function according to claim 4, characterized in that: The mounting frame (2) is embedded with a second motor (15), and a common gear (16) is fixedly mounted on the output shaft of the second motor (15); a second rack (18) is fixedly mounted on the side of the left clamping assembly (3), and the second rack (18) is slidably connected to the bottom side of the mounting frame (2); a first rack (17) is fixedly mounted on the side of the fixed plate (4) close to the mounting frame (2), and the first rack (17) is slidably connected to the bottom side of the mounting frame (2); and the common gear (16) is meshed with the first rack (17) and the second rack (18).

6. The mechanical arm with grasping function according to claim 5, characterized in that: The common gear (16) is rotatably connected to the bottom side of the mounting frame (2), and the length of the second rack (18) is longer than that of the first rack (17).

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