CN115890719B - A robotic arm for logistics sorting - Google Patents

Abstract

The invention discloses a mechanical arm for logistics sorting, and belongs to the field of mechanical arms. The utility model provides a robotic arm for commodity circulation letter sorting, includes the mounting bracket, the top fixedly connected with lift cylinder of mounting bracket, the bottom fixedly connected with rectangular plate of lift cylinder extension rod, the bottom fixedly connected with connecting strip of rectangular plate, the bottom of connecting strip is provided with the arm module that is used for centre gripping article; according to the invention, the movable block, the clamping piece and the supporting piece are driven to move left and right through the clamping air cylinder, so that the objects are clamped or loosened, sorting of logistics is realized, the movable block and the clamping piece can expand the protective air bag when the objects are clamped through the mutual matching among the fixed cylinder, the sliding rod, the piston disc and the first hose by utilizing the driving force of the clamping air cylinder, and the expanded protective air bag is contacted with the objects through the design, so that the objects with different soft and hard degrees can be prevented from being damaged due to overlarge pressure by utilizing the elasticity of the expanded protective air bag.

Description

A kind of robotic arm for logistics sorting

Technical field

The invention relates to the technical field of robotic arms, and in particular to a robotic arm for logistics sorting.

Background technique

With the continuous development of e-commerce, the scale of logistics development is also getting larger and larger. For logistics distribution centers, one of the most important and tedious tasks is to sort materials so that they can be delivered according to customer order requirements or Plan to quickly and accurately pick out goods from their storage locations or other locations, classify them in a certain way, and centrally process them. In order to improve sorting efficiency and reduce labor intensity, some logistics centers will use robotic arms instead. Manual sorting.

A traditional robotic arm is composed of a driving part and a clamping part. The robotic arm is installed on the adjustment component to adjust the clamping direction and angle. However, this type of robotic arm usually uses its hardness when clamping items. The material parts are in contact with the items. Since each item has different softness and hardness, it often happens that the clamping force is too strong and the items are damaged. For this reason, we propose a robotic arm for logistics sorting.

Contents of the invention

The purpose of the present invention is to solve the problem in the prior art that when clamping items, the hard parts are usually used to contact the items. Since the softness and hardness of each item are different, excessive clamping force often occurs. To solve the problem of damage to items, a robotic arm for logistics sorting is proposed.

In order to achieve the above objects, the present invention adopts the following technical solutions:

A robotic arm for logistics sorting, including a mounting frame, the top of the mounting frame is fixedly connected to a lifting cylinder, the bottom end of the lifting cylinder extension rod is fixedly connected to a rectangular plate, and the bottom of the rectangular plate is fixedly connected to a connection strip, the bottom of the connecting strip is provided with a mechanical arm assembly for clamping items, the mechanical arm assembly is provided with a protective mechanism for preventing damage to items, the outer surface of the rectangular plate is linked with a compression mechanism through the connecting assembly, The mounting bracket is also provided with a dust blowing assembly that cooperates with the compression mechanism to blow away dust on the outer surface of the protective mechanism. The robotic arm assembly includes a mounting piece fixedly connected to the bottom of the connecting bar. The middle part of the bottom of the mounting piece A column is fixedly connected, and the shape of the column is rectangular. The front, rear, left and right sides of the column are fixedly connected to a clamping cylinder. One end of the clamping cylinder extension rod is fixedly connected to a moving block, and the bottom of the moving block They are all fixedly connected with clamping parts, and the bottoms of the clamping parts are fixedly connected with supporting parts. The protection mechanism includes fixed cylinders fixedly connected to the front, rear, left and right sides of the column, and a sliding rod is slidingly connected to the inside of the fixed cylinder. , one end of the sliding rod is fixedly connected to the corresponding moving block, and the other end of the sliding rod is fixedly connected to a piston disk. The piston of the piston disk moves in the fixed cylinder, and the clamping member is close to the upright column. One side is fixedly connected with a protective airbag, the outer surface of the fixed cylinder is connected with a first hose, and the other end of the first hose is connected with the corresponding protective airbag. The connection component includes a fixedly connected There is a connecting rack on one side of the rectangular plate. The outer surface of the connecting rack is engaged with a rotating gear. The axis of the rotating gear is fixedly connected with a rotating rod. The bottom of the mounting frame is fixedly connected with two support blocks. , the rotating rod is rotationally connected to the two support blocks through bearings, the outer surface of the rotating rod is fixedly connected with a cam, the compression mechanism includes four telescopic sleeve rods fixedly connected to the bottom of the mounting frame, the telescopic sleeve rod An extrusion plate is fixedly connected to the bottom end of the telescopic sleeve rod, and a return spring is connected to the outer surface of the telescopic sleeve rod. Both ends of the return spring are fixedly connected to the extrusion plate and the mounting frame respectively. The extrusion plate is located on the cam directly above and the outer ring of the extrusion plate have a curvature, the dust blowing assembly includes an inflatable air bag arranged at the bottom of the mounting frame, the top of the inflating air bag is connected with a fixed tube, the fixed tube runs through the mounting frame and extends to Above the mounting bracket, a connecting pipe is connected to the top of the fixed pipe. A mounting slot is provided inside the moving block. A gas nozzle is fixedly connected to the mounting slot. Four connecting pipes are connected to the outer surface of the connecting pipe. A second hose is provided, and the other ends of the four second hoses are respectively connected with corresponding air nozzles.

Preferably, one side of the mounting bracket is provided with two mounting holes for screwing in.

Preferably, an anti-slip groove is provided on one side of the supporting member.

Preferably, the mounting bracket is provided with a rectangular groove, and the connecting rack is slidably connected in the rectangular groove.

Compared with the existing technology, the present invention provides a robotic arm for logistics sorting, which has the following beneficial effects:

1. This robotic arm for logistics sorting drives the moving block, clamping parts and supporting parts to move left and right through the clamping cylinder. It is used to clamp or loosen items to achieve logistics sorting. The clamping cylinder is used to The driving force, and through the mutual cooperation between the fixed cylinder, the sliding rod, the piston disk and the first hose, the moving block and the clamping piece can also expand the protective air bag when clamping the object. This design, through the expansion The last protective air bag comes into contact with the object, and its elasticity can be used to prevent objects of different softness and hardness from being damaged due to excessive pressure. After the object is released, it is reset through the sliding rod and piston disk, allowing the gas in the protective air bag to flow out. It can prevent the protective airbag from being in an inflated state all the time and extend the service life of the protective airbag. Moreover, its clamping and protection are controlled by one power supply of the clamping cylinder, and the structure is ingenious.

2. The robotic arm for logistics sorting is used to adjust the position of the connecting bar and the robotic arm assembly through the setting of the lifting cylinder to facilitate the sorting of items. It also connects racks, rotating gears, rotating rods, support blocks and The mutual cooperation between the cams can also cause the extrusion plate to repeatedly compress the telescopic sleeve rod and the return spring, thereby completing the extrusion of the inflatable airbag. It also uses the fixed tube, connecting tube, installation groove, and second hose settings. , the gas after being repeatedly squeezed by the inflated airbag is ejected from the bottom of the air nozzle, which can blow away the dust on the outer surface of the protective airbag and does not require frequent manual cleaning. This design, through the setting of the connecting component and the compression mechanism , so that the driving force of the lifting cylinder not only has a regulating effect, but also drives the dust blowing component to operate, without the need for a separate drive, reducing the number of power supplies.

The uninvolved parts of the device are the same as the existing technology or can be implemented using the existing technology. While the clamping cylinder drives the moving block to clamp the items, the invention can also use the driving force of the clamping cylinder to make the protective air bag Expansion, through the inflated protective airbag comes into contact with objects, and its elasticity can be used to prevent objects of different softness and hardness from being damaged due to excessive pressure, and after the object is released, the protective airbag is reset through the slide rod and piston disk. The gas inside can flow out, which can prevent the protective air bag from being in an inflated state and extend the service life of the protective air bag. Its clamping and protection are controlled by a power supply of the clamping cylinder. The structure is ingenious. At the same time, through the connecting components and the compression mechanism The setting makes the driving force of the lifting cylinder not only have a regulating effect, but also drive the dust blowing component to blow away the dust attached to the outer surface of the protective air bag, and does not require a separate drive, reducing the number of power supplies.

Description of the drawings

Figure 1 is a schematic structural front view of a robotic arm for logistics sorting proposed by the present invention;

Figure 2 is a schematic diagram of the structure of a robotic arm for logistics sorting proposed by the present invention, viewed from above;

Figure 3 is an enlarged schematic diagram of the structure of position A in Figure 2 of a logistics sorting robotic arm proposed by the present invention;

Figure 4 is a schematic diagram of the rectangular plate structure of a robotic arm for logistics sorting proposed by the present invention;

Figure 5 is a schematic structural diagram of the robotic arm assembly of a robotic arm for logistics sorting proposed by the present invention;

Figure 6 is an enlarged schematic diagram of the structure of position B in Figure 5 of a robotic arm for logistics sorting proposed by the present invention;

Figure 7 is a schematic diagram of the internal structure of the fixed cylinder of a robotic arm for logistics sorting proposed by the present invention.

In the picture: 1. Mounting frame; 2. Lifting cylinder; 3. Rectangular plate; 4. Connecting strip; 5. Robotic arm assembly; 501. Installation piece; 502. Column; 503. Clamping cylinder; 504. Moving block; 505 , Clamping piece; 506. Supporting piece; 6. Protection mechanism; 601. Fixed cylinder; 602. Slide rod; 603. Piston disc; 604. Protective airbag; 605. First hose; 7. Connection component; 701. Connecting rack; 702, rotating gear; 703, rotating rod; 704, support block; 705, cam; 8, compression mechanism; 801, telescopic sleeve rod; 802, extrusion plate; 803, return spring; 9, dust blowing assembly ; 901. Inflatable air bag; 902. Fixed tube; 903. Connecting tube; 904. Installation slot; 905. Air nozzle; 906. Second hose; 10. Installation hole; 11. Anti-slip groove; 12. Rectangular groove.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all the embodiments.

In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", " The orientation or positional relationship indicated by "outside" and so on is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation. Specific orientations of construction and operation are therefore not to be construed as limitations of the invention.

Embodiment 1: Referring to Figures 1 to 7, a robotic arm for logistics sorting includes a mounting frame 1. The top of the mounting frame 1 is fixedly connected to a lifting cylinder 2, and the bottom end of the extension rod of the lifting cylinder 2 is fixedly connected to a rectangular plate. 3. The bottom of the rectangular plate 3 is fixedly connected with a connecting strip 4. The bottom of the connecting strip 4 is provided with a mechanical arm assembly 5 for holding items. The mechanical arm assembly 5 is provided with a protective mechanism 6 for preventing damage to the items. The rectangular plate 3 The outer surface of the protective mechanism 6 is linked with a compression mechanism 8 through a connecting assembly 7. The mounting frame 1 is also provided with a dust blowing assembly 9 that cooperates with the compression mechanism 8 to blow away dust on the outer surface of the protective mechanism 6. The mechanical arm assembly 5 includes a fixed connection on The mounting piece 501 at the bottom of the connecting bar 4 is fixedly connected to a column 502 in the middle of the bottom of the mounting piece 501. The shape of the column 502 is rectangular. The front, rear, left and right sides of the column 502 are fixedly connected to a clamping cylinder 503, and the extension rod of the clamping cylinder 503 is fixed. One end is fixedly connected with the moving block 504, the bottom of the moving block 504 is fixedly connected with the clamping member 505, the bottom of the clamping member 505 is fixedly connected with the supporting member 506, and two sides of the mounting frame 1 are provided for An anti-slip groove 11 is provided on one side of the mounting hole 10 into which the screw is screwed and the supporting member 506 .

In the present invention, when the robot arm is in use, screws are screwed into the mounting holes 10 to fix the mounting bracket 1 on the external adjustment component. The position of the robot arm component 5 can be adjusted through the adjustment component to facilitate clamping of items. When sorting is required, the lifting cylinder 2 is used to drive the rectangular plate 3 to move downward, so that the connecting bar 4 and the robotic arm assembly 5 move downward together, and by adjusting the cooperation of the assembly, the four clamping parts 505 It is located on the outer surface of the object, and starts four clamping cylinders 503 at the same time. The four clamping cylinders 503 drive the corresponding moving blocks 504 to move to the middle, so that the clamping part 505 and the supporting part 506 follow to move to the middle. The clamping member 505 clamps the items and is used for sorting the items. Through the setting of the supporting member 506, the items can be supported to a certain extent, thereby enhancing the stability of the clamping and preventing the items from moving in mid-air. The phenomenon of falling occurs, and the friction between the item and the supporting member 506 is enhanced through the setting of the anti-slip groove 11, so that the clamping effect is better.

Embodiment 2: Referring to Figures 1 to 7, a robotic arm for logistics sorting includes a mounting frame 1. The top of the mounting frame 1 is fixedly connected to a lifting cylinder 2, and the bottom end of the extension rod of the lifting cylinder 2 is fixedly connected to a rectangular plate. 3. The bottom of the rectangular plate 3 is fixedly connected with a connecting strip 4. The bottom of the connecting strip 4 is provided with a mechanical arm assembly 5 for holding items. The mechanical arm assembly 5 is provided with a protective mechanism 6 for preventing damage to the items. The rectangular plate 3 The outer surface of the protective mechanism 6 is linked with a compression mechanism 8 through a connecting assembly 7. The mounting frame 1 is also provided with a dust blowing assembly 9 that cooperates with the compression mechanism 8 to blow away dust on the outer surface of the protective mechanism 6. The mechanical arm assembly 5 includes a fixed connection on The mounting piece 501 at the bottom of the connecting bar 4 is fixedly connected to a column 502 in the middle of the bottom of the mounting piece 501. The shape of the column 502 is rectangular. The front, rear, left and right sides of the column 502 are fixedly connected to a clamping cylinder 503, and the extension rod of the clamping cylinder 503 is fixed. One end is fixedly connected with a moving block 504, the bottom of the moving block 504 is fixedly connected with a clamping piece 505, the bottom of the clamping piece 505 is fixedly connected with a supporting piece 506, the protection mechanism 6 includes fixedly connected to the front, rear, left and right sides of the column 502 The fixed cylinder 601 has a sliding rod 602 slidably connected inside the fixed cylinder 601. One end of the sliding rod 602 is fixedly connected to the corresponding moving block 504. The other end of the sliding rod 602 is fixedly connected to a piston disk 603. The piston disk 603 The piston moves in the fixed cylinder 601. One side of the clamping member 505 close to the column 502 is fixedly connected with a protective air bag 604. The outer surface of the fixed cylinder 601 is connected to a first hose 605. The other end of the first hose 605 is connected to the first hose 605. Communicated with the corresponding protective airbag 604.

In the present invention, on the basis of Embodiment 1, when the clamping cylinder 503 drives the moving block 504 to move to the middle, the moving block 504 drives the sliding rod 602 to slide in the direction of the column 502 inside the fixed cylinder 601, so that the piston disk 603 Then it slides in the fixed cylinder 601 together, and the gas inside the fixed cylinder 601 is compressed by the piston disk 603, so that the compressed gas enters the corresponding protective air bag 604 through the first hose 605, causing the protective air bag 604 to expand. The rear protective airbag 604 contacts the object, and its elasticity can prevent objects of different softness and hardness from being damaged due to excessive pressure. After the object is clamped to a specific station, the clamping cylinder 503 is started again, and the clamping cylinder 503 The moving block 504, the clamping member 505 and the supporting member 506 are driven to move outward to cause the items to fall. During the movement of the moving block 504, the sliding rod 602 and the piston disk 603 are reset, allowing the gas in the protective airbag 604 to flow out. , which can prevent the protective airbag 604 from being in an inflated state all the time, extending the service life of the protective airbag 604, and the clamping and protection of items are controlled by a single power supply of the clamping cylinder 503, and the structure is relatively ingenious.

Embodiment 3: Referring to Figures 1 to 7, a robotic arm for logistics sorting includes a mounting frame 1. The top of the mounting frame 1 is fixedly connected to a lifting cylinder 2, and the bottom end of the extension rod of the lifting cylinder 2 is fixedly connected to a rectangular plate. 3. The bottom of the rectangular plate 3 is fixedly connected with a connecting strip 4. The bottom of the connecting strip 4 is provided with a mechanical arm assembly 5 for holding items. The mechanical arm assembly 5 is provided with a protective mechanism 6 for preventing damage to the items. The rectangular plate 3 The outer surface of the protective mechanism 6 is linked with a compression mechanism 8 through a connecting assembly 7. The mounting frame 1 is also provided with a dust blowing assembly 9 that cooperates with the compression mechanism 8 to blow away dust on the outer surface of the protective mechanism 6. The connecting assembly 7 includes a rectangular There is a connecting rack 701 on one side of the plate 3. The outer surface of the connecting rack 701 is meshed with a rotating gear 702. The axis of the rotating gear 702 is fixedly connected with a rotating rod 703. The bottom of the mounting frame 1 is fixedly connected with two support blocks. 704. The rotating rod 703 is rotationally connected to the two support blocks 704 through bearings. The outer surface of the rotating rod 703 is fixedly connected with a cam 705. The compression mechanism 8 includes four telescopic sleeve rods 801 fixedly connected to the bottom of the mounting frame 1. The telescopic sleeve rods The bottom end of 801 is fixedly connected with an extrusion plate 802, and the outer surface of the telescopic sleeve rod 801 is sleeved with a return spring 803. Both ends of the return spring 803 are fixedly connected with the extrusion plate 802 and the mounting frame 1 respectively. The extrusion plate 802 Located directly above the cam 705 and the outer ring of the extrusion plate 802 has a curvature, a rectangular slot 12 is provided on the mounting frame 1 , and the connecting rack 701 is slidably connected in the rectangular slot 12 .

In the present invention, on the basis of Embodiment 1, when the lifting cylinder 2 drives the rectangular plate 3 to move downward and adjusts the orientation of the connecting bar 4 and the robotic arm assembly 5, the rectangular plate 3 drives the connecting rack 701 to move downward along with it. , through the arrangement of the rectangular slot 12, the connecting rack 701 can slide downward in the rectangular slot 12 to avoid affecting the movement of the rectangular plate 3. When the connecting rack 701 moves downward, due to the connecting rack 701 and the rotating gear 702 The meshing connection can drive the rotating gear 702 and the rotating rod 703 to rotate. Through the arrangement of the two support blocks 704, the rotating rod 703 can be supported to enhance the stability of the rotating rod 703 when it rotates. The rotating rod 703 in turn drives the cam 705 to rotate. , when the raised end of the cam 705 contacts the extrusion plate 802, the extrusion plate 802 is driven to move upward, compressing the telescopic sleeve rod 801 and the return spring 803, and when the protruding end of the cam 705 moves away from the extrusion plate 802 , through the elastic force of the return spring 803, the extrusion plate 802 is driven to return, causing the extrusion plate 802 to reciprocate in the vertical direction, thereby driving the dust blowing assembly 9 to operate. This design makes the lifting cylinder 2 not only have an adjustment connecting strip The azimuth effects of 4 and the mechanical arm assembly 5 can also drive the dust blowing assembly 9 to operate synchronously to enhance the linkage between mechanisms, and the adjustment of the connecting bar 4 and the operation of the dust blowing assembly 9 are both driven by the lifting cylinder 2. , no need to install a separate power supply driver, reducing the number of power supplies.

Embodiment 4: Referring to Figures 1 to 7, a robotic arm for logistics sorting includes a mounting frame 1. The top of the mounting frame 1 is fixedly connected to a lifting cylinder 2, and the bottom end of the extension rod of the lifting cylinder 2 is fixedly connected to a rectangular plate. 3. The bottom of the rectangular plate 3 is fixedly connected with a connecting strip 4. The bottom of the connecting strip 4 is provided with a mechanical arm assembly 5 for holding items. The mechanical arm assembly 5 is provided with a protective mechanism 6 for preventing damage to the items. The rectangular plate 3 The outer surface of the protective mechanism 6 is linked with a compression mechanism 8 through a connecting component 7. The mounting frame 1 is also provided with a dust blowing component 9 that cooperates with the compression mechanism 8 to blow away dust on the outer surface of the protective mechanism 6. The dust blowing component 9 includes a dust blowing component 9 arranged on the installation There is an inflatable airbag 901 at the bottom of the rack 1. The top of the inflatable airbag 901 is connected to a fixed tube 902. The fixed tube 902 penetrates the mounting rack 1 and extends to the top of the mounting rack 1. The top of the fixed tube 902 is connected to a connecting tube 903. The moving block 504 Installation grooves 904 are provided inside, and air nozzles 905 are fixedly connected in the installation grooves 904. Four second hoses 906 are connected to the outer surface of the connecting pipe 903, and the other ends of the four second hoses 906 are respectively connected with the corresponding The valve 905 is connected.

In the present invention, on the basis of Embodiment 3, when the extrusion plate 802 moves upward, the inflatable airbag 901 is compressed, and the gas compressed by the inflatable airbag 901 enters the connecting pipe 903 through the fixed pipe 902, and then flows from the four second soft The tubes 906 enter the corresponding air nozzles 905 respectively, so that they are ejected from the air outlets of the air nozzles 905. Since the air nozzles 905 are located in the installation grooves 904, and the installation grooves 904 are located above the protective airbags 604, they can directly protect the airbags 604. The air bag 604 is blown to blow off the dust adhering to the outer surface of the protective air bag 604 to keep the protective air bag 604 clean and does not require frequent manual cleaning.

A method of using a robotic arm for logistics sorting, including the following steps:

Step A: Screw the screws into the mounting holes 10 so that the mounting bracket 1 is fixed on the external adjustment component. The position of the robotic arm component 5 can be adjusted through the adjustment component. When items need to be clamped, the lifting cylinder 2 is used to drive the rectangular plate 3. Move downward, so that the connecting bar 4 and the robotic arm assembly 5 move downward together, and by adjusting the cooperation of the components, the four clamping parts 505 are located on the outer surface of the object, and the four clamping cylinders 503 are started at the same time. Each clamping cylinder 503 drives the corresponding moving block 504 to move to the middle, so that the clamping member 505 and the supporting member 506 move to the middle together, and the clamping member 505 is used to clamp the items;

Step B: When the clamping cylinder 503 drives the moving block 504 to move to the middle, the moving block 504 drives the sliding rod 602 to slide in the direction of the column 502 inside the fixed cylinder 601, so that the piston disc 603 follows and slides in the fixed cylinder 601. The gas inside the fixed cylinder 601 is compressed by the piston disk 603, and the compressed gas enters the corresponding protective air bag 604 through the first hose 605, causing the protective air bag 604 to expand, and the expanded protective air bag 604 contacts the object. Use its elasticity to protect items;

Step C: When the lifting cylinder 2 drives the rectangular plate 3 to move downward and adjusts the orientation of the connecting bar 4 and the robotic arm assembly 5, the rectangular plate 3 drives the connecting rack 701 to move downward together, and through the setting of the rectangular slot 12, the The connecting rack 701 can slide downward in the rectangular groove 12 to avoid affecting the movement of the rectangular plate 3. When the connecting rack 701 moves downward, since the connecting rack 701 is meshed with the rotating gear 702, it can drive the rotating gear 702. When the rotating rod 703 rotates, the rotating rod 703 drives the cam 705 to rotate. When the convex end of the cam 705 contacts the extrusion plate 802, it drives the extrusion plate 802 to move upward, compressing the telescopic sleeve rod 801 and the return spring 803. When the convex end of the cam 705 is away from the extrusion plate 802, the elastic force of the return spring 803 drives the extrusion plate 802 to reset, causing the extrusion plate 802 to reciprocate in the vertical direction. When the extrusion plate 802 moves upward When the inflatable air bag 901 is compressed, the compressed gas of the inflated air bag 901 enters the connecting pipe 903 through the fixed pipe 902, and then enters the corresponding air nozzle 905 from the four second hoses 906, so that it passes from the air nozzle 905 The air outlet blows out. Since the air nozzle 905 is located in the installation groove 904 and the installation groove 904 is located above the protective airbag 604, the protective airbag 604 can be blown directly to blow off the dust attached to the outer surface of the protective airbag 604.

The above are only preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person familiar with the technical field can, within the technical scope disclosed in the present invention, implement the technical solutions of the present invention. Equivalent substitutions or changes of the inventive concept thereof shall be included in the protection scope of the present invention.

Claims (1)

1. The utility model provides a mechanical arm for logistics sorting, includes mounting bracket (1), a serial communication port, the top fixedly connected with lift cylinder (2) of mounting bracket (1), the bottom fixedly connected with rectangular plate (3) of lift cylinder (2) extension rod, the bottom fixedly connected with connecting strip (4) of rectangular plate (3), the bottom of connecting strip (4) is provided with arm module (5) that are used for holding article, be provided with on arm module (5) and be used for preventing protection machanism (6) that article damaged, the surface of rectangular plate (3) has compressing mechanism (8) through coupling assembling (7) linkage, still be provided with on mounting bracket (1) with compressing mechanism (8) cooperate and be used for blowing off dust subassembly (9) of protection machanism (6) surface dust of blowing off, arm module (5) are including mounting (501) of fixed connection in connecting strip (4) bottom, the middle part fixedly connected with stand (502) of mounting (501) bottom, the shape of stand (502) is rectangle (502), the back side of stand (502) is provided with protection machanism (8) and is connected with compression mechanism (503) in the front of a left and right side (5), all is connected with clamping cylinder (503) fixed connection with clamping piece (503) moving cylinder (503) all, all fixed connection clamping piece (503) moving cylinder (503), the bottom of clamping piece (505) is fixedly connected with bearing (506), protection mechanism (6) is including fixed barrel (601) of fixed connection in stand (502) front and back left and right sides face, the inside sliding connection of fixed barrel (601) has slide bar (602), the one end of slide bar (602) all with corresponding movable block (504) fixed connection, the other end of slide bar (602) all fixedly connected with piston disc (603), piston disc (603) piston motion is in fixed barrel (601), the side that clamping piece (505) is close to stand (502) all fixedly connected with protection gasbag (604), the surface of fixed barrel (601) all communicates there is first hose (605), the other end of first hose (605) all communicates with corresponding protection gasbag (604), coupling assembling (7) are including connecting (701) of fixed connection in a side of rectangular plate (3), the surface meshing of coupling (701) is connected with rotation gear (702), the axle center fixedly connected with piston disc (603) in fixed connection in fixed barrel (601), the axle center of rotation gear (703) is connected with two bull sticks (703), two bull sticks (704) are connected with each other through two bull sticks (703) fixed connection with the bottom (703), the compression mechanism (8) comprises four telescopic loop bars (801) fixedly connected to the bottom of the installation frame (1), an extrusion plate (802) is fixedly connected to the bottom end of each telescopic loop bar (801), return springs (803) are sleeved on the outer surfaces of the telescopic loop bars (801), the two ends of each return spring (803) are respectively fixedly connected with the extrusion plate (802) and the installation frame (1), each extrusion plate (802) is located right above a cam (705), the outer ring of each extrusion plate (802) is provided with an arc, the dust blowing assembly (9) comprises an inflatable air bag (901) arranged at the bottom of the installation frame (1), a fixed pipe (902) is communicated with the top of each inflatable air bag (901), each fixed pipe (902) penetrates through the installation frame (1) and extends to the upper portion of the installation frame (1), connecting pipes (903) are communicated with the top ends of the fixed pipes (902), installing grooves (904) are respectively formed in the inner portions of the moving blocks (504), air nozzles (905) are respectively fixedly connected with air nozzles (905), and the outer surfaces of the connecting pipes (903) are communicated with second hoses (906) which are communicated with the other ends of the corresponding hoses (906). Two mounting holes (10) for screwing in screws are formed in one side surface of the mounting frame (1); an anti-skid groove (11) is formed in one side surface of the bearing piece (506); rectangular grooves (12) are formed in the mounting frame (1), and the connecting racks (701) are slidably connected in the rectangular grooves (12).