Mechanical arm for grabbing objects

Abstract

The utility model discloses a mechanical arm for grabbing articles, and particularly relates to the field of mechanical arms, the mechanical arm comprises a mounting base, the upper end face of the mounting base is provided with a driving device, the output end of the driving device penetrates through the upper end face of the mounting base and extends downwards, and the lower end face of the mounting base is fixedly provided with a mounting plate; the device comprises a mounting plate, two rotating devices are symmetrically and rotationally connected to the mounting plate, the output end of each rotating device is connected with the output end of a driving device, a fixing plate is fixedly connected to the output end of each rotating device, a sliding groove is formed in the lower end face of each fixing plate, and a clamping device is arranged in each sliding groove. By arranging the motor and the clamping device, articles of different sizes can be clamped, the driving device can drive the rotating device to rotate, the fixing plate can drive the clamping device to synchronously rotate, and the purpose of automatically overturning the clamping device and the articles clamped by the clamping device is achieved.

Description

Technical Field

[0001] The utility model relates to the field of robotic arms, and more specifically, to a robotic arm for grasping objects. Background Art

[0002] Before processing the parts of a product, it is necessary to grasp and fix the parts to meet the requirements of part processing. During the process of manufacturing the parts of a product, it is necessary to repeatedly process different sides of the parts. Therefore, it is necessary to often rotate the parts during processing. In the prior art, manual grasping and flipping are usually adopted. However, the work of manually grasping and flipping parts is a tedious mechanical repetitive action. Workers are very prone to fatigue when repeating an action for a long time, resulting in low labor efficiency, extremely high danger, and poor consistency. Moreover, the existing robotic arms do not have a matching flipping mechanism, making it impossible to exert the automatic flipping function of the robotic arm on the product. Therefore, it is necessary to redesign a robotic arm for grasping objects in response to the above problems. Summary of the Utility Model

[0003] In order to overcome the above-mentioned defects of the prior art, an embodiment of the utility model provides a robotic arm for grasping objects.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A robotic arm for grasping objects includes a mounting base. The upper end surface of the mounting base is provided with a driving device, and the output end of the driving device penetrates through the upper end surface of the mounting base and extends downward. The lower end surface of the mounting base is fixedly installed with a mounting plate. Two rotating devices are symmetrically and rotatably connected to the mounting plate, and the output end of each rotating device is connected to the output end of the driving device. A fixing plate is fixedly connected to the output end of each rotating device. A chute is opened on the lower end surface of each fixing plate, and a clamping device is arranged in each chute.

[0006] As Figures 1-5 shown, the specific implementation method is as follows: By setting a motor, a clamping device, and a second cylinder, the motor can be used to drive the double-headed threaded rod to rotate. The rotation of the double-headed threaded rod can be used to drive the slider and the clamping plate to clamp objects of different sizes. By starting the second cylinder, the fixing plate can be driven to expand and contract, so that the clamping device can clamp objects of different heights. By setting devices such as a driving device, a rotating device, a clamping device, and a limiting rod fixing plate, the driving device can be used to drive the rotating device to rotate, so that the fixing plate can drive the clamping device to rotate synchronously, achieving the purpose of automatically flipping the clamping device and the object clamped by the clamping device.

[0007] In a preferred embodiment, the driving device includes a first cylinder, and the first cylinder is fixedly installed on the upper end surface of the mounting base. The output shaft of the first cylinder penetrates through the upper end surface of the mounting base and is extended with a mounting block. A limiting groove is formed on the mounting block, and two racks are symmetrically installed on both sides of the mounting block, and the two racks are respectively connected to the output ends of the rotating devices.

[0008] In a preferred embodiment, each of the rotating devices includes a fixed shaft, and the fixed shaft is rotatably installed on one side of the mounting plate. The end of the fixed shaft away from the mounting plate is fixedly installed with a gear, and the gear meshes with the corresponding rack. A second cylinder is fixedly installed on one side of the gear, and the fixed plate is fixedly installed on the output shaft of the second cylinder.

[0009] In a preferred embodiment, the clamping device includes a double-headed threaded rod, and the double-headed threaded rod is installed on the inner side wall of the sliding groove through a bearing. The double-headed threaded rod is threadedly connected with two sliders, and the two sliders are slidably clamped in the sliding groove. A clamping plate is fixedly installed on the lower end surface of each slider.

[0010] In a preferred embodiment, the clamping plate is made of rubber material.

[0011] In a preferred embodiment, a mounting frame is fixedly installed on one side of the fixed plate. A motor is fixedly installed on the mounting frame, and the output shaft of the motor penetrates through one side of the fixed plate and is fixedly connected to one end of the double-headed threaded rod.

[0012] In a preferred embodiment, a limiting rod is fixedly installed on one side of the mounting plate, and the limiting rod is slidably connected with the limiting groove.

[0013] In a preferred embodiment, the limiting rod is made of rubber material.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] 1. By setting devices such as a motor and a clamping device, the present utility model can drive the double-headed threaded rod to rotate by using the motor, and drive the slider and the clamping plate to clamp items of different sizes by using the rotation of the double-headed threaded rod.

[0016] 2. By setting devices such as a driving device, a rotating device, a clamping device, a limiting rod, and a fixed plate, the present utility model can drive the rotating device to rotate by using the driving device, so that the fixed plate can drive the clamping device to rotate synchronously, achieving the purpose of automatically flipping the clamping device and the items clamped by the clamping device.

[0017] In summary, when the utility model is in use, it is easy to operate. By setting a motor and a clamping device, articles of different sizes can be clamped. The driving device can drive the rotating device to rotate, so that the fixing plate can drive the clamping device to rotate synchronously, achieving the purpose of automatically flipping the clamping device and the articles clamped by the clamping device. Brief Description of the Drawings

[0018] Figure 1 is a schematic structural diagram of a robotic arm for grasping articles proposed by the utility model;

[0019] Figure 2 is a partial schematic diagram of the driving device of a robotic arm for grasping articles proposed by the utility model;

[0020] Figure 3 is a partial schematic diagram of the mounting plate of a robotic arm for grasping articles proposed by the utility model;

[0021] Figure 4 is a partial schematic diagram of the rotating device of a robotic arm for grasping articles proposed by the utility model;

[0022] Figure 5 is a partial schematic diagram of the clamping device of a robotic arm for grasping articles proposed by the utility model.

[0023] In the figure: 1 mounting base, 2 first cylinder, 3 mounting plate, 4 second cylinder, 5 mounting block, 6 limiting groove, 7 rack, 8 fixed shaft, 9 gear, 10 fixing plate, 11 clamping plate, 12 mounting bracket, 13 motor, 14 sliding groove, 15 double-headed threaded rod, 16 slider, 17 limiting rod. Detailed Description of the Preferred Embodiments

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0025] Refer to Figures 1-5 , a robotic arm for grasping articles, including a mounting base 1. A driving device is provided on the upper end surface of the mounting base 1, and the output end of the driving device penetrates through the upper end surface of the mounting base 1 and extends downward. A mounting plate 3 is fixedly installed on the lower end surface of the mounting base 1. Two rotating devices are symmetrically rotatably connected to the mounting plate 3, and the output end of each rotating device is connected to the output end of the driving device. A fixing plate 10 is fixedly connected to the output end of each rotating device. A sliding groove 14 is formed on the lower end surface of each fixing plate 10, and a clamping device is provided in each sliding groove 14.

[0026] As Figures 1-5 shown, the implementation manner is specifically as follows: By setting the motor 13, the clamping device, and the second cylinder 4, the motor 13 can drive the double-headed threaded rod 15 to rotate. By using the rotation of the double-headed threaded rod 15, the slider 16 and the clamping plate 11 can be driven to clamp articles of different sizes. By starting the second cylinder 4, the fixed plate 10 can be driven to expand and contract, so that the clamping device can clamp articles of different heights. Devices such as the driving device, the rotating device, the clamping device, and the limiting rod 17 and the fixed plate 10 are provided. By using the driving device, the rotating device can be driven to rotate, so that the fixed plate 10 can drive the clamping device to rotate synchronously, achieving the purpose of automatically flipping the clamping device and the articles clamped by the clamping device.

[0027] The driving device includes a first cylinder 2, and the first cylinder 2 is fixedly installed on the upper end surface of the mounting base 1. The output shaft of the first cylinder 2 penetrates through the upper end surface of the mounting base 1 and is extended with a mounting block 5. A limiting groove 6 is provided on the mounting block 5. Two racks 7 are symmetrically installed on both sides of the mounting block 5, and the two racks 7 are respectively connected to the output ends of the rotating devices. The second cylinder 4 can drive the mounting block 5 to expand and contract.

[0028] Each rotating device includes a fixed shaft 8, and the fixed shaft 8 is rotatably installed on one side of the mounting plate 3. A gear 9 is fixedly installed at the end of the fixed shaft 8 away from the mounting plate 3, and the gear 9 meshes with the corresponding rack 7. A second cylinder 4 is fixedly installed on one side of the gear 9. By using the movement of the rack 7, the gear 9 can be driven to rotate. By the rotation of the gear 9, the second cylinder 4 can be driven to rotate synchronously, and the fixed plate 10 is fixedly installed on the output shaft of the second cylinder 4. The second cylinder 4 can drive the fixed plate 10 to expand and contract.

[0029] The clamping device includes a double-headed threaded rod 15, and the double-headed threaded rod 15 is installed on the inner side wall of the sliding groove 14 through a bearing. The double-headed threaded rod 15 is threadedly connected with two sliders 16, and the two sliders 16 are slidably clamped in the sliding groove 14. A clamping plate 11 is fixedly installed on the lower end surface of each slider 16. It should be noted that: the two sliders 16 are respectively threadedly connected to two opposite threads of the double-headed threaded rod 15.

[0030] The clamping plate 11 is made of rubber material. It should be noted that: such a design can prevent the clamping plate 11 from damaging the articles to be clamped.

[0031] An installation frame 12 is fixedly installed on one side of the fixed plate 10. A motor 13 is fixedly installed on the installation frame 12, and the output shaft of the motor 13 penetrates through one side of the fixed plate 10 and is fixedly connected to one end of the double-headed threaded rod 15. The output shaft of the motor 13 can drive the double-headed threaded rod 15 to rotate.

[0032] One side of the mounting plate 3 is fixedly installed with a limiting rod 17, and the limiting rod 17 is slidably connected with the limiting groove 6. The limiting rod 17 can limit the mounting block 5 and restrict the maximum stroke of the mounting block 5. By using the contact between the top and bottom walls of the limiting rod 17 and the limiting groove 6, the maximum stroke of the mounting block 5 can be limited. The limiting rod 17 is made of rubber. It should be noted that: the rubber material can prevent the limiting rod 17 from damaging the mounting block 5 when the limiting rod 17 contacts the mounting block 5.

[0033] When the present utility model is in use, first start the motor 13. The output shaft of the motor 13 can drive the double-headed threaded rod 15 fixedly connected thereto to rotate. Subsequently, the slider 16 fixedly connected with the double-headed threaded rod 15 can perform relative displacement in the sliding groove 14. Subsequently, the slider 16 can drive the clamping plate 11 fixedly connected thereto to clamp an article. By starting the second cylinder 4, the fixed plate 10 can be driven to expand and contract, so that the clamping device can clamp articles of different heights.

[0034] By starting the first cylinder 2, the output shaft of the first cylinder 2 can drive the mounting block 5 to expand and contract. Through the movement of the mounting block 5, the two racks 7 fixedly connected to both sides of the mounting block 5 can be driven to move synchronously. The limiting rod 17 can limit the mounting block 5 to prevent the mounting block 5 from over-expanding and contracting under the expansion and contraction of the first cylinder 2. Subsequently, through the movement of the rack 7, the gear 9 engaged therewith can be driven to rotate. At this time, through the rotation of the gear 9, the fixed shaft 8 fixedly connected with the gear 9 can be driven to rotate on the mounting plate 3. At the same time, the rotation of the gear 9 can drive the second cylinder 4 to rotate synchronously. The second cylinder 4 will drive the fixed plate 10 fixedly connected to its output shaft to rotate. Subsequently, the fixed plate 10 can drive the article clamped by the clamping device to flip. Subsequently, the motor 13 can be reversed. The output shaft of the motor 13 will drive the double-headed threaded rod 15 to rotate. Subsequently, the double-headed threaded rod 15 can drive the sliders 16 threadedly connected thereto to move away from each other. Subsequently, the clamping plate 11 can follow the displacement of the slider 16. At this time, the article clamped by the clamping plate 11 can be released.

[0035] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A mechanical arm for grasping an object, comprising a mounting base (1), characterized in that: The upper end surface of the mounting base (1) is provided with a driving device, and the output end of the driving device penetrates the upper end surface of the mounting base (1) and extends downwardly; the lower end surface of the mounting base (1) is fixedly provided with a mounting plate (3); two rotating devices are symmetrically rotatably connected to the mounting plate (3); the output end of each rotating device is connected to the output end of the driving device; a fixing plate (10) is fixedly connected to the output end of each rotating device; a sliding groove (14) is provided on the lower end surface of each fixing plate (10); and a clamping device is provided in each sliding groove (14).

2. A mechanical arm for grasping an object according to claim 1, characterized in that: The driving device comprises a first cylinder (2), and the first cylinder (2) is fixedly mounted on the upper end surface of the mounting base (1), the output shaft of the first cylinder (2) passes through the upper end surface of the mounting base (1) and is extended to be mounted with a mounting block (5), a limiting groove (6) is provided on the mounting block (5), two racks (7) are symmetrically mounted on both sides of the mounting block (5), and the two racks (7) are respectively connected to the output ends of the rotating device.

3. A mechanical arm for grasping an object according to claim 2, characterized in that: Each of the rotating devices comprises a fixed shaft (8), and the fixed shaft (8) is rotatably mounted on one side of the mounting plate (3); a gear (9) is fixedly mounted on one end of the fixed shaft (8) away from the mounting plate (3), and the gear (9) is meshed with a rack (7) at a corresponding position; a second cylinder (4) is fixedly mounted on one side of the gear (9), and the fixed plate (10) is fixedly mounted on the output shaft of the second cylinder (4).

4. A mechanical arm for grasping an object according to claim 1, characterized in that: The clamping device comprises a double-threaded rod (15), and the double-threaded rod (15) is installed on the inner wall of the slide groove (14) through a bearing. The double-threaded rod (15) is threadedly connected to two sliders (16), and the two sliders (16) are slidably clamped in the slide groove (14), and a clamping plate (11) is fixedly installed on the lower end surface of each slider (16).

5. A mechanical arm for grasping an object according to claim 4, characterized in that: The clamping plate (11) is made of rubber material.

6. A mechanical arm for grasping an object according to claim 3, characterized in that: A mounting frame (12) is fixedly mounted on one side of the fixing plate (10), a motor (13) is fixedly mounted on the mounting frame (12), and an output shaft of the motor (13) passes through one side of the fixing plate (10) and is fixedly connected to one end of a double-headed threaded rod (15).

7. The mechanical arm for grasping an object according to claim 3, characterized in that: A limiting rod (17) is fixedly mounted on one side of the mounting plate (3), and the limiting rod (17) is slidably connected to the limiting groove (6).

8. A mechanical arm for grasping an object according to claim 7, characterized in that: The limiting rod (17) is made of rubber material.

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