CN116000288A - A floating powder blowing device on the surface of powder metallurgy parts - Google Patents

Abstract

The utility model provides a powder metallurgy part surface floats powder blowing brush device, is including compression forming mechanism, transport workstation, floats powder blowing brush box and part and concentrates the carousel, compression forming mechanism, transport workstation and part concentrate the carousel and set gradually the workstation end swing joint of compression forming mechanism has first slide, the first slide other end sets up on transport workstation, it sets up on transport workstation (2) to float powder blowing brush box, be provided with the second slide on the part concentrates the carousel, second slide both ends are connected with transport workstation and part concentrate the carousel respectively transport workstation lateral part still installs the part and snatchs tilting mechanism, the part snatchs tilting mechanism and is used for grasping and takes out the part on the compression forming mechanism. The invention has the advantages of convenient use, complete floating powder blowing and brushing work in the automatic transportation process after compression molding, complete floating powder blowing and brushing coverage, no dead angle, product quality influence and high floating powder blowing and brushing efficiency.

Description

A floating powder blowing device on the surface of powder metallurgy parts

technical field

The invention relates to the technical field of powder metallurgy equipment, in particular to a floating powder blowing device on the surface of powder metallurgy parts.

Background technique

Powder metallurgy is a process technology for producing metal powder or using metal powder (or a mixture of metal powder and non-metal powder) as raw material, forming and sintering to manufacture metal materials, composite materials and various types of products. Powder metallurgy has unique chemical composition and mechanical and physical properties, which cannot be obtained by traditional casting methods, and has been widely used in transportation, machinery, electronics, aerospace, weapons, biology, new energy, information and nuclear Industry and other fields have become one of the most dynamic branches in new material science. Powder metallurgy technology also has a series of advantages such as significant energy saving, material saving, excellent performance, high product precision and good stability, and is very suitable for mass production.

After powder metallurgy is pressed and formed, there will always be a layer of floating powder attached to its entire surface. Directly taking it for sintering will seriously affect the product quality. Therefore, it is necessary to remove the floating powder after pressing and forming. However, it is not suitable to use a special process for removing the floating powder, which costs too much It is time, the longer the floating powder is, the less likely it is to fall off, and it will cause surface quality defects. Usually, the floating powder blowing work needs to be completed during the automatic transportation process after pressing, but due to the tight process time, it often leads to floating powder blowing and brushing coverage Incomplete problems will produce dead ends and affect product quality.

Contents of the invention

In order to make up for the deficiencies of the existing powder metallurgy equipment, the present invention proposes a device with simple structure and convenient use, which can complete the floating powder blowing work in the automatic transportation process after pressing and forming, and the floating powder blowing brush covers all aspects without the influence of dead angles. Product quality, floating powder blowing brushing device with high efficiency of powder metallurgy parts surface floating powder brushing.

The specific technical scheme is as follows:

A floating powder brushing device on the surface of powder metallurgy parts, including a pressing mechanism, a conveying table, a floating powder blowing box and a parts centralized turntable. The end of the workbench of the pressing mechanism is movably connected with a first slide plate, the other end of the first slide plate is set on the conveying workbench, the floating powder blowing box is set on the conveying workbench, and the parts concentrating turntable is provided with The second slide plate, the two ends of the second slide plate are respectively connected with the conveying workbench and the parts centralized turntable, and a parts grasping and turning mechanism is installed on the side of the conveying workbench, and the parts grasping and turning mechanism is used for grasping and taking out Parts on press molding mechanisms.

As an optimization: the pressing and forming mechanism is provided with a mounting frame, a molding press is arranged on the top of the mounting frame, a pressing supporting bottom column is arranged in the middle of the mounting frame, and the output end of the forming pressing machine is arranged opposite to the top of the supporting bottom column, The top of the support bottom column is provided with a liftable workbench, and the middle part of the liftable workbench is provided with a forming die hole, the support base column is matched with the forming die hole, and a lifting drive hydraulic cylinder group is provided at the bottom of the mounting frame , the output end of the lift drive hydraulic cylinder group is connected to the bottom of the liftable workbench.

As an optimization: the parts grasping and turning mechanism is composed of a sliding lifting device, a turning device and a gripper device, and the gripper device is used to grasp the parts on the pressing and forming mechanism, and the gripping device is installed at the output end of the turning device , the overturning device is installed at the output end of the sliding lifting device, and the sliding lifting device is installed on the liftable workbench;

An installation support frame is arranged on the liftable workbench, and the sliding lifting device is installed on the liftable workbench through the installation support frame.

As an optimization: the sliding lifting device includes a sliding device and a lifting device, the sliding device is provided with a sliding guide rail plate, a sliding seat is slidably arranged on the sliding guide rail plate, and the lifting device is arranged on the sliding seat Above, a driving cylinder is arranged at the end of the sliding guide rail plate, and the driving cylinder is fixedly arranged at the end of the sliding guide rail plate;

The lifting device is provided with a lifting cylinder, the lifting cylinder is installed on the sliding seat, the output end of the lifting cylinder is connected to a support plate, and the turning device is arranged at the end of the support plate;

The turning device is provided with a rotary cylinder installed at the end of the support plate, the output end of the rotary cylinder is connected with a support rod, and the gripper device is installed at the end of the support rod.

As an optimization: the gripper device is provided with an installation housing, which is arranged at the end of the support rod, and two splints are installed in the installation housing, the front parts of the two splints form a clamp shape, and one of the splints The activity is arranged in the installation housing, and the rear part of the other splint is provided with a control cylinder, and the output end of the control cylinder is fixedly connected with the movable arrangement of the splint.

As an optimization: the conveying workbench is provided with a mounting frame body, a conveying belt is provided on the top of the mounting frame body, driving rollers are provided at both ends of the conveying belt, and the driving rollers are connected with a driving motor.

As an optimization: there is also a concentrated floating powder cleaning box at the bottom of the installation frame, and the opening of the floating powder centralized cleaning box is located at the floating powder blowing box and the conveying end of the conveyor belt.

As an optimization: the floating powder blowing box is provided with a box structure, the two ends of the box structure are provided with an inlet and an outlet, and the two ends of the box structure are respectively provided with a pre-cleaning brush group and a rear cleaning brush group. The cleaning brush group, the front cleaning brush group and the rear cleaning brush group are respectively arranged close to the inlet and the outlet, and a pneumatic rotary cleaning device is also arranged in the middle of the box structure.

As an optimization: the air pressure rotary cleaning device is provided with an air pressure box, and an air pressure turntable is rotatably connected to the bottom of the air pressure box, and a rotating air blowing nozzle is evenly arranged on the air pressure rotating disk, and all the rotating air blowing nozzles are used for The parts are rotated and blown;

As an optimization: there are also negative pressure dust removal boxes on both sides of the box structure. The bottom of the negative pressure dust removal box is hollowed out, and it is set opposite to the floating powder centralized cleaning box. Negative pressure is formed in the pressure dust removal box, which attracts the floating powder in the powder blowing box to the negative pressure dust removal box, and falls into the concentrated floating powder cleaning box, and will not float to the outside of the powder blowing box at will.

As an optimization: the parts concentration turntable includes a support frame and a rotating motor, a protective baffle is arranged on the top of the support frame, a turntable is installed at the output end of the rotating motor, and the protective baffle is arranged around the turntable. The support frame is also provided with a material inlet platform and a material outlet platform. The feed inlet platform is set, and the turntable turns from the feed inlet platform, the discharge outlet platform and the arc-shaped collecting plate in turn.

The beneficial effects of the present invention are: simple structure, convenient use, the floating powder blowing work can be completed in the automatic transportation process after pressing, and the floating powder blowing efficiency is high;

The setting of the parts grabbing and turning mechanism, facing the parts with a toothed structure on the surface, can prevent falling during the transmission process, and the tooth-like fracture of the surface can ensure the processing quality of the product. At the same time, the process of turning the pressed and formed parts through the parts grabbing and turning mechanism It can shake off the floating powder on the flat side of the parts, and will not produce dead angles that affect product quality;

A hollowed-out first skateboard is provided to prevent the accumulation of floating powder through the hollowed-out first skateboard that can drop floating powder during the suspension and flipping process of the parts;

Combining the brush group and the pneumatic rotary cleaning device, the floating powder blowing brush covers more comprehensively, and the floating powder cleaning is fast and thorough, and by adjusting the transmission speed of the conveying worktable, the time of blowing and brushing of parts can be adjusted to adapt to the cleaning of different parts, which improves the cost. generality of the invention;

A negative pressure dedusting mechanism is set up to attract the scattered floating powder and concentrate it in the floating powder centralized cleaning box, so as to avoid the safety hazard caused by the floating powder and the impact on product quality and production.

Description of drawings

Figure 1 is a schematic diagram of the overall structure of the present invention.

Fig. 2 is a structural schematic diagram of the parts concentration turntable in the present invention.

Fig. 3 is a structural schematic diagram of the parts grabbing and turning mechanism in the present invention.

Fig. 4 is a schematic structural view of the gripper device in the present invention.

Fig. 5 is a schematic diagram of the external structure of the floating powder blowing box in the present invention.

Fig. 6 is a schematic diagram of the internal cross-sectional structure of the floating powder blowing box in the present invention.

Explanation of reference signs: pressing forming mechanism 1; conveying workbench 2; installation support frame 3; floating powder blowing box 4; parts centralized turntable 5; Device 8; Sliding lifting device 9;

The first slide plate 21; the mounting frame body 22; the conveying belt 23; the driving drum 24; the floating powder centralized cleaning box 25;

Mounting frame 11; pressing supporting bottom column 12; liftable workbench 13; forming mold hole 14; lifting drive hydraulic cylinder group 15; forming pressing machine 16;

Install the housing 71; splint 72; control cylinder 73;

Rotary cylinder 81; Support rod 82;

Sliding rail plate 91; sliding seat 92; lifting cylinder 93; supporting plate 94; driving cylinder 95;

Box structure 41; front cleaning brush group 42; rear cleaning brush group 43; pneumatic rotary cleaning device 44; pneumatic rotary table 45; negative pressure dust removal box 46; negative pressure generator 47;

The second slide plate 51; the support frame 52; the rotating motor 53; the protective baffle 54; the turntable 55;

Detailed ways

The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to define the protection scope of the present invention more clearly.

Implementation examples:

As shown in Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5 and Fig. 6: a surface floating powder blowing device for powder metallurgy parts is provided with a pressing mechanism 1, a conveying workbench 2, and a floating powder blowing box 4 and the parts centralized turntable 5, the pressing forming mechanism 1, the conveying workbench 2 and the parts focusing turntable 5 are arranged in sequence, and the first slide plate 21 is movably connected to the end of the workbench of the pressing forming mechanism 1, which can be hinged, and the other end of the first slide plate 21 It can be set on the conveying workbench 2, rest on the conveying workbench 2 or be dynamically connected to the conveying workbench 2. The above-mentioned floating powder blowing box 4 is arranged on the conveying workbench 2, and the parts concentrating turntable 5 is provided with a second Two slide plates 51, the two ends of the second slide plate 51 are respectively connected with the conveying workbench 2 and the parts centralized turntable 5, and a parts grasping and turning mechanism 6 is installed on the side of the conveying workbench 2, and the parts grasping and turning mechanism 6 is used for grasping and taking out Parts on the press molding mechanism 1.

The above-mentioned pressing and forming mechanism 1 is provided with a mounting frame 11, a molding press 16 is arranged on the top of the mounting frame 11, and a pressing supporting bottom column 12 is arranged in the middle of the mounting frame 11, and the output end of the forming pressing machine 16 is opposite to the top of the supporting bottom column 12 Setting, the top of the support bottom column 12 is provided with a liftable worktable 13, the middle part of the liftable workbench 13 is provided with a molding die hole 14, the support base 12 is matched with the molding die hole 14, and a lifting drive is provided at the bottom of the mounting frame 11 The hydraulic cylinder group 15, the output end of the lifting drive hydraulic cylinder group 15 is connected to the bottom of the liftable workbench 13.

The above parts grasping and turning mechanism 6 is composed of a sliding lifting device 9, a turning device 8 and a gripper device 7. The gripper device 7 is used to grasp the parts on the pressing and forming mechanism 1. The gripping device 7 is installed at the output end of the turning device 8 , the turning device 8 is installed on the output end of the sliding lifting device 9, and the sliding lifting device 9 is installed on the liftable workbench 13;

An installation support frame 3 is arranged on the liftable workbench 13 , and the sliding lifting device 9 is installed on the liftable workbench 13 through the installation support frame 3 .

The above-mentioned sliding lifting device 9 is composed of a sliding device and a lifting device. The sliding device is provided with a sliding guide rail plate 91, and a sliding seat 92 is slidably arranged on the sliding guide rail plate 91. The lifting device is arranged on the sliding seat 92. The end of the sliding guide rail plate 91 is provided with a driving cylinder 95, and the driving cylinder 95 is fixedly arranged at the end of the sliding guide rail plate 91;

The lifting device is provided with a lifting cylinder 93, the lifting cylinder 93 is installed on the sliding seat 92, the output end of the lifting cylinder 93 is connected with a support plate 94, and the turning device 8 is arranged at the end of the support plate 94;

Turning device 8 is provided with rotary cylinder 81, and this rotary cylinder 81 is installed at the end of support plate 94, and the output end of rotary cylinder 81 is connected with support rod 82, and gripper device 7 is installed at the end of this support rod 82.

In the process of pressing and forming parts, some irregular tooth surfaces are generally lower or sideways, that is, the plane facing the forming and demoulding platform, so it is not suitable to push and pull directly. After the parts are placed on the platform, the parts can be moved horizontally only after the parts are slightly lifted upward by the sliding lifting device 9, so that the parts are suspended in the air during the movement to avoid touching the unexpected protrusions on the platform, and also avoid the friction between the tooth surface and the platform, which may cause friction damage, which affects product quality; while the sliding lifting device 9 is moving the parts horizontally, a turning device 8 is provided to turn the parts over to avoid damage when the tooth surface of the parts falls on the first slide plate 21; the first slide plate 21 is designed to be hollowed out In the process of suspension and overturning of parts, some floating powders that are easy to fall can be dropped, and the accumulation of floating powders can be prevented through this hollowing; The next molding demoulding work, in this process, the liftable workbench 13 rises again, and the slope of the first slide plate 21 is just steeper, after the parts grabbed by the gripper device are placed on the first slide plate 21 at this time , it is easier to slide to the conveying table 2, the whole process forms a beneficial linkage, and the production efficiency is higher.

Above-mentioned gripper device 7 is provided with installation housing 71, and this installation housing 71 is arranged on the end of support bar 65, and two splints 72 are installed in the installation housing 71, and the front portion of two splints 72 forms clamp shape, and one of them The splint 72 is movably arranged in the installation housing 71 , and the rear portion of the other splint 72 is provided with a control cylinder 73 , and the output end of the control cylinder 73 is fixedly connected with the movable splint 72 .

In the process of pressing and forming parts, the pressing surface facing the forming press 16 is generally a flat side, and some irregular tooth surfaces are generally located at the lower end or side, and the lower end surface can be formed into a tooth-like structure by the parts grabbing and turning mechanism 6 The parts are turned over to avoid tooth-like fracture or collision deformity on the surface during the conveying process to ensure the processing quality of the products. No dead angle will affect product quality.

The above-mentioned conveying workbench 2 is provided with a mounting frame body 22, a conveying belt 23 is arranged on the top of the mounting frame body 22, and a driving roller 24 is arranged at both ends of the conveying belt 23, and the driving roller 24 is connected with a driving motor, which can adjust the rotation speed, or another speed and torque adjustment mechanism is set up between the driving drum 24 and the driving motor.

The bottom of the mounting frame body 22 is also provided with a centralized cleaning box 25 for floating powder, and the opening of the centralized cleaning box 25 for floating powder is located at the delivery end of the floating powder blowing box 4 and the conveying belt 23 .

The above-mentioned floating powder blowing box 4 is provided with a box structure 41, the two ends of the box structure 41 are provided with an inlet and an outlet, and the two ends of the box structure 41 are respectively provided with a pre-cleaning brush group 42 and a rear cleaning brush Group 43, front cleaning hair brush group 42 and rear cleaning hair brush group 43 are arranged near entrance and exit respectively, and front cleaning hair brush group 42 and rear cleaning hair brush group 43 can clean up each tooth surface as much as possible. A kind of floating powder with dead angle and strong adhesion is also provided with an air pressure rotary cleaning device 44 in the middle of the box structure 41 .

Combination of brush group and air pressure rotary cleaning device 44, floating powder blowing and brushing coverage is relatively comprehensive, floating powder cleaning is fast and thorough, and by adjusting the transmission speed of the conveying table, the time of parts blowing and brushing can be adjusted to adapt to the cleaning of different parts and improve generality of the present invention.

The air pressure rotary cleaning device 44 is provided with an air pressure box, and an air pressure turntable 45 is rotatably connected to the bottom of the air pressure box. On the air pressure turntable 45, there are evenly arranged rotating air blowing nozzles, and all the rotating air blowing nozzles are used to rotate parts. Blowing air, when entering a certain position of the floating powder blowing box 4, the blowing nozzle starts to rotate and blow air. The advantage of rotating air blowing is that the air flow can be relatively small, which can blow off the floating powder on the surface of the parts without blowing the floating powder Blow too far to cause pollution. When the part enters the middle position of the floating powder blowing box 4, that is, when the rotating blowing nozzle is facing the position, the rotating blowing nozzle is connected to the air source and starts blowing and cleaning. When the part is far away from this position Turn off the air source at the same time, and the ventilation time can be adjusted according to the effect. In this way, compressed air can be used more effectively, unnecessary waste of compressed air can be reduced, so as to achieve the purpose of saving energy, and the service life of the rotary blowing nozzle can also be improved. The above can be realized through the control of the electrical control system, and an elastic air bag can also be provided in the air circuit connected to the air pressure turntable 45 to cooperate with the automatic pressure relief valve, and the ventilation time can be controlled by adjusting the threshold value of the automatic pressure relief valve.

On both sides of the box structure 41, a negative pressure dust removal box 46 is also arranged. The bottom of the negative pressure dust removal box 46 is hollowed out. The centralized cleaning box 25 is relatively arranged, and a negative pressure generator 47 is arranged in the negative pressure dust removal box 46 to form a negative pressure in the negative pressure dust removal box 46, and attract the floating powder in the floating powder blowing box 4 to the negative pressure dust removal box 46 , and drop into the floating powder centralized cleaning box 25, and will not float to the outside of the floating powder blowing and brushing casing 4 at will.

The above-mentioned negative pressure generator 47 is installed on the top of the negative pressure dust removal box 46, and can also be installed in other places. It is installed on the top to prevent the floating powder from being adsorbed on the negative pressure generator 47 in large quantities, causing the negative pressure to fail, and the negative pressure generator 47 The specific structure is composed of a negative pressure motor unit and a rotating fan blade group. The rotating fan blade group is installed at the output end of the negative pressure motor unit, and a detachable dust filter is also arranged on the top of the negative pressure dust removal box.

The above-mentioned parts concentration turntable 5 is provided with a support frame 52 and a rotating motor 53. A circle of protective baffle 54 is arranged on the top of the support frame 52. A rotating disk 55 is installed at the output end of the rotating motor 53. The protective baffle 54 is arranged around the rotating disk 55. The frame 52 is also provided with a material inlet platform 56 and a material outlet platform 57, the material inlet platform 56 is set opposite to the material outlet platform 57, and an arc-shaped concentrating plate 58 is arranged on the protective baffle plate 54, and the arc-shaped centralized The plate 58 is arranged close to the feed inlet platform 56 , and the turntable 55 turns around from the feed inlet platform 56 , the discharge outlet platform 57 and the arc-shaped concentrating plate 58 in sequence.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications and substitutions can be made to these embodiments without departing from the principle and spirit of the present invention. modifications and variations, the scope of the invention is defined by the appended claims.

Claims (10)

1. A floating powder blowing device on the surface of powder metallurgy parts, characterized in that: it includes a pressing mechanism (1), a conveying workbench (2), a floating powder blowing box (4) and a parts centralized turntable (5). The press-forming mechanism (1), conveying workbench (2) and parts concentrating turntable (5) are arranged in sequence, and a first slide plate (21) is movably connected to the end of the workbench of the press-form mechanism (1). The other end of a slide plate (21) is arranged on the conveying workbench (2), the floating powder blowing box (4) is arranged on the conveying workbench (2), and the part concentrating turntable (5) is provided with a second Sliding plate (51), the two ends of the second sliding plate (51) are respectively connected with the conveying workbench (2) and the parts concentrating turntable (5), and the workbench of the pressing and forming mechanism (1) is also equipped with a part gripper Take the overturning mechanism (6), and the parts grabbing overturning mechanism (6) is used to grab and take out the parts on the pressing and forming mechanism (1). 2. The surface floating powder blowing device of powder metallurgy parts according to claim 1, characterized in that: the pressing and forming mechanism (1) is provided with a mounting frame (11), and a molding pressing device is provided on the top of the mounting frame (11). machine (16), the middle part of the mounting frame (11) is provided with a pressing support bottom column (12), the output end of the molding press (16) is set opposite to the top of the support bottom column (12), and the support bottom column (12) ) top is provided with a liftable workbench (13), and the middle part of the liftable workbench (13) is provided with a molding die hole (14), and the supporting bottom column (12) cooperates with the molding die hole (14). The bottom of the installation frame (11) is provided with a lifting drive hydraulic cylinder group (15), and the output end of the lifting driving hydraulic cylinder group (15) is connected to the bottom of the liftable workbench (13). 3. The floating powder brushing device on the surface of powder metallurgy parts according to claim 2, characterized in that: the parts grasping and turning mechanism (6) is composed of a sliding lifting device (9), a turning device (8) and a gripping device (7) composition, described gripper device (7) is used for grasping the parts on the press-forming mechanism (1), and described gripper device (7) is installed on the output end of turning device (8), and described turning device (8) ) is installed at the output end of the sliding lifting device (9), and the sliding lifting device (9) is installed on the liftable workbench (13); An installation support frame (3) is arranged on the liftable worktable (13), and the sliding lifting device (9) is installed on the liftable workbench (13) through the installation support frame (3). 4. The floating powder blowing device on the surface of powder metallurgy parts according to claim 3, characterized in that: the sliding lifting device (9) includes a sliding device and a lifting device, and the sliding device is provided with a sliding guide rail plate (91), a sliding seat (92) is slidably arranged on the sliding guide rail plate (91), the lifting device is arranged on the sliding seat (92), and a driving device is provided at the end of the sliding guide rail plate (91). Cylinder (95), the driving cylinder (95) is fixedly arranged on the end of the sliding guide rail plate (91); The lifting device is provided with a lifting cylinder (93), the lifting cylinder (93) is installed on the sliding seat (92), the output end of the lifting cylinder (93) is connected with a support plate (94), and the turning device (8) be arranged at the end of the support plate (94); The overturning device (8) is provided with a rotary cylinder (81), the rotary cylinder (81) is installed at the end of the support plate (94), and the output end of the rotary cylinder (81) is connected with a support rod (82), so The gripping device (7) is installed at the end of the support rod (82). 5. The powder metallurgy part surface floating powder blowing device according to claim 4, characterized in that: the gripper device (7) is provided with an installation shell (71), and the installation shell (71) is arranged on the support rod (82) end, two splints (72) are installed in the described installation shell (71), the front portion of two splints (72) forms clamp shape, wherein a splint (72) is movably arranged on the installation shell ( In 71), another splint (72) rear portion is provided with a control cylinder (73), and the output end of the control cylinder (73) is fixedly connected with the movable splint (72). 6. The surface floating powder blowing device for powder metallurgy parts according to claim 1, characterized in that: the conveying workbench (2) is provided with a mounting frame (22), and the top of the mounting frame (22) is set There is a conveying belt (23), and a driving roller (24) is arranged at both ends of the conveying belt (23), and a driving motor is connected to the driving roller (24). 7. The surface floating powder blowing device of powder metallurgy parts according to claim 5, characterized in that: a floating powder centralized cleaning box (25) is also arranged at the bottom of the mounting frame body (22), and the floating powder centralized cleaning box (25) ) opening is located at the end of the floating powder blowing box (4) and the conveying belt (23). 8. The surface floating powder blowing device of powder metallurgy parts according to claim 1, characterized in that: the floating powder blowing box (4) is provided with a box structure (41), and the box structure (41) has two The end is provided with an inlet and an outlet, and the two ends of the box structure (41) are respectively provided with a pre-cleaning brush group (42) and a rear cleaning brush group (43). (42) and the rear cleaning brush group (43) are arranged near the inlet and the outlet respectively, and an air pressure rotary cleaning device (44) is also arranged in the middle part of the box structure (41). 9. The floating powder brushing device on the surface of powder metallurgy parts according to claim 8, characterized in that: the air pressure rotary cleaning device (44) is provided with an air pressure box, and an air pressure turntable ( 45), the air pressure turntable (45) is uniformly provided with rotating air blowing nozzles, and all the rotating air blowing nozzles are used to rotate and blow air to the parts; Negative pressure dust removal boxes (46) are also arranged on both sides of the box structure (41). A negative pressure generator is arranged in the dust removal box (46). 10. The floating powder blowing device on the surface of powder metallurgy parts according to claim 1, characterized in that: the parts concentrating turntable (5) includes a support frame (52) and a rotating motor (53), and the support frame (52) The top is provided with a circle of protective baffles (54), the output end of the rotating motor (53) is equipped with a turntable (55), and the protective baffles (54) are arranged around the turntable (55). ) is also provided with a feed port platform (56) and a discharge port platform (57), the feed port platform (56) is set opposite to the discharge port platform (57), and the protective baffle (54) An arc-shaped concentrating plate (58) is arranged on the top, and the arc-shaped concentrating plate (58) is arranged close to the feed port platform (56), and the turntable (55) sequentially passes from the feed port platform (56) to the discharge port platform. (57) and arc concentrating plate (58) turn over.

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