CN218693900U

CN218693900U - Vibration powder paving device

Info

Publication number: CN218693900U
Application number: CN202222825223.4U
Authority: CN
Inventors: 雷米尔; 李时春; 肖罡; 孙卓; 彭海洋; 李伟奇
Original assignee: Hunan University of Science and Technology
Current assignee: Hunan University of Science and Technology
Priority date: 2022-10-25
Filing date: 2022-10-25
Publication date: 2023-03-24
Anticipated expiration: 2032-10-25

Abstract

The utility model discloses a powder device is spread in vibration, including the frame with locate frame lower part and notch shop's powder groove up, shop's powder inslot is equipped with the lift powder bed mechanism that is used for placing powder and liftable, but the frame is equipped with a plurality of shop's powder mechanism of arranging side by side and horizontal migration in the top of shop's powder groove, shop's powder mechanism is used for tiling the powder of mixing to the lift powder bed mechanism on, the both sides of shop's powder groove are equipped with the printing opacity respectively and keep off powder mechanism and shovel powder mechanism, but the printing opacity keeps off the notch that powder mechanism can translate to shop's powder groove top in order to supply the lift powder bed mechanism to rise to press the powder, shovel powder mechanism is used for shoveling unnecessary powder in the lift powder bed mechanism, be equipped with vibration mechanism in the shop's powder mechanism. The local vibration powder laying device can improve the production efficiency, the powder laying uniformity and the product quality and can reduce the powder waste and the processing cost.

Description

Vibration powder paving device

Technical Field

The utility model relates to a laser vibration material disk makes technical field, especially relates to a powder device is spread in vibration.

Background

The powder forming process also generally forms a solid body by stacking powder layers by a laser additive manufacturing technique, and then performs press forming on the solid body.

The laser additive manufacturing technology is that powder is spread through a powder bed, then metal powder on the powder bed is melted or sintered by laser beams according to a track path given by a three-dimensional model, and the metal powder is overlapped layer by layer to form an entity. The laser additive manufacturing technology has the characteristic of no limitation of a part structure, and is one of key technologies for solving the problem that polar plates with complex structures such as bionics and three-dimensions are difficult to prepare.

The press forming is a processing and forming method for obtaining a workpiece (stamping part) with a required shape and size by applying an external force to a plate, a strip, a pipe, a profile and the like by a press and a die to cause plastic deformation or separation, and the stamping part has light weight, thin thickness and good rigidity. The dimensional tolerance of the die is determined by the die, so the quality is stable, and the die can be used without mechanical cutting.

The existing laser additive manufacturing equipment has the following defects:

(1) The processing time is long, and the production efficiency is low;

(2) The equipment processing is complex, and powder spreading and powder pressing can not be finished on the same processing table;

(3) The actual processing area is 50-70%, and if the powder is not recycled, a large amount of unprocessed powder is wasted;

(4) The upper powder layer and the lower powder layer have poor matching performance, the dimensional precision of a formed part cannot meet the requirement, the density of a workpiece is seriously influenced, and the service performance and the service life of the workpiece are finally reduced;

(5) Poor powder spreading uniformity, resulting in poor quality of the formed workpiece.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome prior art not enough, provide one kind can improve production efficiency, spread powder homogeneity and product quality and can reduce the extravagant vibration of powder and processing cost and spread the powder device.

In order to solve the technical problem, the utility model adopts the following technical scheme:

the utility model provides a powder device is spread in vibration, includes the frame and locates frame lower part and notch shop's powder groove up, shop's powder inslot is equipped with the lift powder bed mechanism that is used for placing powder and liftable, but the frame is equipped with a plurality of shop's powder mechanism of arranging side by side and horizontal migration in the top of shop's powder groove, shop's powder mechanism is used for tiling the powder of mixing to the mechanism of lift powder bed on, the both sides of shop's powder groove are equipped with the printing opacity respectively and keep off powder mechanism and shovel powder mechanism, the printing opacity keeps off the notch that powder mechanism can translate to shop's powder groove top and press the powder in order to supply the lift powder bed mechanism to rise, shovel powder mechanism is used for shoveling unnecessary powder in the mechanism of lift powder bed, be equipped with vibration mechanism in the shop's powder mechanism.

As a further improvement of the above technical solution:

the lifting powder bed mechanism comprises a powder bed which is placed in the powder paving groove and is matched with the powder paving groove and a lifting driving piece which is arranged below the powder bed and is used for driving the powder bed to lift.

The light-transmitting powder blocking mechanism comprises a horizontal light-transmitting plate and a first horizontal driving assembly arranged on the rack and used for driving the light-transmitting plate to move horizontally.

And limiting grooves for the light transmission plates to pass through are formed in the tops of two sides of the powder paving groove corresponding to the motion direction of the light transmission plates.

Shovel powder mechanism is including pushing away the powder shovel and pushing away the powder driving piece, it locates to be used for the drive to push away powder shovel motion in order to shovel surplus powder in the mechanism of lifting powder bed in the frame to push away the powder driving piece.

Push away the powder driving piece and be flexible driving piece, push away the powder shovel and locate the drive end that pushes away the powder driving piece.

Spread powder mechanism including removing the shop powder case that sets up in the frame and locate the powder box that falls who spreads the powder incasement, be equipped with in the frame and be used for the drive to spread the second translation drive assembly of powder case horizontal migration, the bottom that falls the powder box is equipped with the water conservancy diversion face of slope, the top is equipped with into the powder mouth, it is equipped with the powder mouth that falls to fall the powder box in the bottom of water conservancy diversion face, it is equipped with the powder mouth in the below of powder mouth that falls to spread the powder box, is equipped with the powder mouth in the top of advancing the powder mouth, it is equipped with in powder mouth department of falling to fall the powder box and puts powder valve body mechanism, vibration mechanism locates the powder box that falls and spreads between the powder box for the drive vibration of powder box that falls.

The powder discharge valve body mechanism comprises a valve plate arranged at the powder falling port in a sliding mode and an opening and closing driving assembly used for driving the valve plate to slide so as to open and close the powder falling port.

The second translation driving assembly comprises at least two lead screws arranged on the rack in parallel and a rotary driving piece used for driving the lead screws to rotate synchronously, and each lead screw penetrates through the powder spreading box and is in threaded connection with the powder spreading box.

The vibrating mechanism comprises a vibrating motor arranged on the powder paving box and a vibrator arranged at the driving end of the vibrating motor, the driving end of the vibrator is connected with a powder dropping box, and an elastic piece is arranged between the powder dropping box and the powder paving box in a cushioning mode.

Compared with the prior art, the utility model has the advantages of:

the utility model integrates powder spreading and powder pressing on one device, thereby shortening the processing time and improving the production efficiency; the powder is sintered by laser after being compacted, so that the formed workpiece has high dimensional precision and density and good quality; the powder spreading mechanism moves horizontally and spreads powder under the vibration effect of the vibration mechanism, so that the powder spreading uniformity is good, and the powder waste is less. This powder device is spread in vibration structural design is reasonable, can improve production efficiency, spread powder homogeneity and product quality, can reduce the powder extravagant and processing cost.

Drawings

Fig. 1 is a schematic view of the three-dimensional structure of the vibrating powder spreading device of the present invention.

Fig. 2 is a schematic structural diagram of a powder paving groove of the vibrating powder paving device of the utility model.

Fig. 3 is a schematic structural view of the light-transmitting powder-blocking mechanism of the vibrating powder-spreading device of the present invention.

Fig. 4 is a schematic structural view of the powder shoveling mechanism of the vibrating powder spreading device of the present invention.

Fig. 5 is a schematic structural diagram of the powder spreading mechanism of the powder vibrating spreading device of the present invention.

The reference numerals in the figures denote:

1. a frame; 2. spreading a powder groove; 21. a limiting groove; 3. a powder shoveling mechanism; 31. pushing the powder shovel; 32. a powder pushing driving part; 4. a powder bed lifting mechanism; 41. a powder bed; 42. a lifting drive member; 5. a light-transmitting powder blocking mechanism; 51. a light-transmitting plate; 52. a first horizontal drive assembly; 6. a powder spreading mechanism; 61. spreading a powder box; 611. spreading a powder port; 612. adding powder; 62. dropping the powder box; 621. a flow guide surface; 622. a powder inlet; 623. powder falling port; 63. a powder discharge valve body mechanism; 631. a valve plate; 632. an opening and closing drive assembly; 7. a vibration mechanism; 71. a vibration motor; 72. a vibrator; 8. a second translation drive assembly; 81. a screw rod; 82. a rotary drive member; 9. an elastic member.

Detailed Description

The invention will be described in further detail with reference to the drawings and specific examples.

As used in this disclosure and in the claims, the terms "a," "an," "the," and/or "the" are not intended to be inclusive in the singular, but rather are inclusive in the plural unless the context clearly dictates otherwise. The use of "first," "second," and similar terms in this disclosure is not intended to indicate any order, quantity, or importance, but rather is used to distinguish one element from another. Likewise, the word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

Fig. 1 to 5 show the utility model discloses an embodiment of powder device is spread in vibration, the vibration is moved and is spread the powder device and include frame 1 and locate 1 lower part of frame and notch spread powder groove 2 up, be equipped with the lift powder bed mechanism 4 that is used for placing powder and liftable in spreading powder groove 2, frame 1 is equipped with a plurality of spread powder mechanism 6 of arranging side by side and horizontal migration in the top of spreading powder groove 2, spread powder mechanism 6 and be used for tiling the powder of mixing to lift powder bed mechanism 4 on, the both sides of spreading powder groove 2 are equipped with printing opacity respectively and keep off powder mechanism 5 and shovel powder mechanism 3, the printing opacity keeps off powder mechanism 5 can translate to the notch of spreading powder groove 2 top in order to supply lift powder bed mechanism 4 to rise to press the powder, shovel powder mechanism 3 is used for shoveling unnecessary powder on the lift powder bed mechanism 4, be equipped with vibrating mechanism 7 on the spread powder mechanism 6.

The powder paving process of the local vibration powder paving device comprises the following steps:

the first step, powder releasing and restoring: different powder is put into different powder laying mechanisms 6, the powder laying mechanisms 6 are arranged in order, the lifting powder bed mechanism 4 is in the lowest state, and the light-transmitting powder blocking mechanism 5 and the powder shoveling mechanism 3 are positioned outside the powder laying groove 2;

step two, powder spreading: the vibrating mechanism 7 is opened, each powder spreading mechanism 6 sequentially moves horizontally according to the required quantity and thickness of powder, a layer of powder is sequentially paved on the lifting powder bed mechanism 4, after the lower-layer powder spreading is finished by the front powder spreading mechanism 6, the lifting powder bed mechanism 4 rises to the required thickness, the powder shoveling mechanism 3 shovels the redundant powder on the lifting powder bed mechanism 4, after the powder on the lifting powder bed mechanism 4 is flat and uniform, the powder shoveling mechanism 3 returns to the original position, the light-transmitting powder blocking mechanism 5 moves horizontally to a notch at the top of the powder spreading groove 2, then the lifting powder bed mechanism 4 further rises, the purpose of powder pressing is achieved through double extrusion of the light-transmitting powder blocking mechanism 5 and the lifting powder bed mechanism 4, and then the upper-layer powder spreading is further carried out through the rear powder spreading mechanism 6.

After powder paving is finished, laser can be emitted above the light-transmitting powder blocking mechanism 5 by adopting laser sintering equipment, and the laser sinters the powder on the lifting powder bed mechanism 4 into an entity through the light-transmitting powder blocking mechanism 5.

The powder laying device is driven to integrate powder laying and powder pressing on one device, so that the processing time is shortened, and the production efficiency is improved; the powder is sintered by laser after being compacted, so that the formed workpiece has high dimensional precision and density and good quality; through spreading 6 horizontal migration of powder mechanism and spreading the powder under the vibration effect of vibration mechanism 7, spread powder homogeneity good, the powder is extravagant few. This powder device is spread in vibration structural design is reasonable, can improve production efficiency, spread powder homogeneity and product quality, can reduce the powder extravagant and processing cost.

In the present embodiment, as shown in fig. 1 and 2, the lifting powder bed mechanism 4 includes a powder bed 41 placed in the powder spreading groove 2 and adapted to the powder spreading groove 2, and a lifting driving member 42 provided below the powder bed 41 for driving the powder bed 41 to lift. Specifically, the periphery of the powder bed 41 is in adaptive contact with the inner side wall of the powder laying groove 2, so that the powder is prevented from falling down due to a large gap formed between the powder bed 41 and the inner side wall of the powder laying groove 2. The opposite surfaces of the light-transmitting powder blocking mechanism 5 and the powder bed 41 are planes, so that the powder can be compacted and leveled between the powder bed 41 and the light-transmitting powder blocking mechanism 5.

In this embodiment, as shown in fig. 1 and fig. 3, the light-transmitting and powder-blocking mechanism 5 includes a horizontal light-transmitting plate 51 and a first horizontal driving assembly 52 disposed on the rack 1 for driving the light-transmitting plate 51 to move horizontally. The light-transmitting plate 51 is made of a light-transmitting material such as glass. The first horizontal drive assembly 52 is a telescopic drive such as an air cylinder, oil cylinder or electric cylinder. The bottom surface of the light-transmitting plate 51 is a horizontal surface parallel to the powder bed 41.

In this embodiment, the top portions of the two sides of the powder spreading groove 2 corresponding to the moving direction of the light-transmitting plate 51 are respectively provided with a limiting groove 21 for the light-transmitting plate 51 to pass through. After the powder falls on the powder bed 41, the lifting driving piece 42 drives the powder bed 41 to rise to the required thickness height, the powder shoveling mechanism 3 shovels redundant powder on the lifting powder bed mechanism 4, the powder is further spread, after the powder on the lifting powder bed mechanism 4 is smooth and uniform, the powder shoveling mechanism 3 returns to the original position, the light-transmitting plate 51 is driven to the powder spreading groove 2 through the first horizontal driving assembly 52 and simultaneously penetrates through the limiting grooves 21 on two sides of the powder spreading groove 2, the limiting grooves 21 limit the light-transmitting plate 51 up and down, and the anti-extrusion capacity of the light-transmitting plate 51 is improved.

In this embodiment, as shown in fig. 1 and 4, the powder shoveling mechanism 3 includes a powder pushing shovel 31 and a powder pushing driving member 32, and the powder pushing driving member 32 is disposed on the frame 1 for driving the powder pushing shovel 31 to move so as to shovel off the excess powder on the lifting powder bed mechanism 4. The powder pushing driving part 32 is a telescopic driving part, and the powder pushing shovel 31 is arranged at the driving end of the powder pushing driving part 32. When the powder falls on the powder bed 41, the lifting driving member 42 drives the powder bed 41 to rise to a required thickness, and the powder pushing shovel 31 is driven by the powder pushing driving member 32 to remove excess powder on the lifting powder bed mechanism 4.

Specifically, push away powder shovel 31 and include horizontal diapire and vertical lateral wall, and horizontal diapire and vertical lateral wall fixed connection are L shape, and vertical lateral wall is fixed at the drive end of pushing away powder driving piece 32, and the bottom surface of horizontal diapire is the horizontal plane, and is high with light-passing board 51's bottom surface tie.

In this embodiment, as shown in fig. 1 and 5, the powder spreading mechanism 6 includes a powder spreading box 61 movably disposed on the frame 1 and a powder falling box 62 disposed in the powder spreading box 61, a second translation driving assembly 8 for driving the powder spreading box 61 to move horizontally is disposed on the frame 1, an inclined flow guide surface 621 is disposed at the bottom of the powder falling box 62, a powder inlet 622 is disposed at the top of the powder falling box 62, a powder falling port 623 is disposed at the bottom end of the flow guide surface 621 of the powder falling box 62, a powder spreading port 611 is disposed below the powder falling port 623 of the powder spreading box 61, a powder adding port 612 is disposed above the powder inlet 622, a powder discharging valve body mechanism 63 is disposed at the powder falling port 623 of the powder falling box 62, and a vibration mechanism 7 is disposed between the powder falling box 62 and the powder spreading box 61 and is configured to drive the powder falling box 62 to vibrate.

When powder is spread, the opening size of the powder falling opening 623 is controlled by the powder valve body mechanism 63 according to the required powder quantity and thickness, and meanwhile, the vibrating mechanism 7 drives the powder falling box 62 to horizontally vibrate up and down, so that the powder falls uniformly. Meanwhile, the second translation driving assembly 8 drives the powder spreading box 61 to move at a constant speed, and the powder falls onto the powder bed 41 uniformly.

In this embodiment, the powder discharge valve body mechanism 63 includes a valve plate 631 slidably disposed at the powder discharge port 623, and an opening/closing driving assembly 632 for driving the valve plate 631 to slide to open and close the powder discharge port 623. The opening and closing driving assembly 632 is used for driving the valve plate 631 to slide, and adjusting the opening size of the powder falling port 623 so as to control the powder discharging amount and the powder discharging speed of the powder falling port 623.

In this embodiment, the second translational driving assembly 8 includes at least two parallel lead screws 81 disposed on the frame 1 and a rotary driving member 82 for driving the lead screws 81 to rotate synchronously, and each lead screw 81 is disposed on the powder spreading box 61 and is in threaded connection with the powder spreading box 61. The rotary driving piece 82 drives the screw rods 81 to synchronously rotate, drives the powder paving boxes 61 to horizontally move, can realize uniform-speed powder paving, and improves the powder paving uniformity. Of course, only one screw 81 can be used to drive the powder spreading box 61, and the other screw 81 is replaced by a guide rod which is in sliding sleeve connection with the powder spreading box 61.

In this embodiment, the vibration mechanism 7 includes a vibration motor 71 disposed on the powder spreading box 61 and a vibrator 72 disposed at a driving end of the vibration motor 71, the driving end of the vibrator 72 is connected to the powder dropping box 62, and an elastic member 9 is disposed between the powder dropping box 62 and the powder spreading box 61. The vibrating motor 71 drives the vibrator 72 to vibrate to drive the powder dropping box 62 to vibrate, so that powder in the powder dropping box 62 can be vibrated and mixed, and the powder dropping opening 623 can be prevented from being blocked.

Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. The technical solution of the present invention can be used by anyone skilled in the art to make many possible variations and modifications, or to modify equivalent embodiments, without departing from the scope of the present invention, using the technical content disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments by the technical essence of the present invention should fall within the protection scope of the technical solution of the present invention.

Claims

1. The utility model provides a powder device is spread in vibration which characterized in that: including frame (1) and locate frame (1) lower part and notch shop powder groove (2) up, be equipped with in shop powder groove (2) and be used for placing powder and liftable lift powder bed mechanism (4), but frame (1) is equipped with a plurality of spread powder mechanism (6) of arranging side by side and horizontal migration in the top of shop powder groove (2), shop powder mechanism (6) are used for tiling the powder of mixing to lift powder bed mechanism (4) on, the both sides of shop powder groove (2) are equipped with printing opacity respectively and keep off powder mechanism (5) and shovel powder mechanism (3), the printing opacity keeps off powder mechanism (5) can translate to the notch of shop powder groove (2) top in order to supply lift powder bed mechanism (4) to rise to press the powder, shovel powder mechanism (3) are used for shoveling unnecessary powder on lift powder bed mechanism (4) and remove, be equipped with vibration mechanism (7) on shop powder mechanism (6).

2. A vibratory dusting apparatus as claimed in claim 1, wherein: the lifting powder bed mechanism (4) comprises a powder bed (41) which is placed in the powder paving groove (2) and matched with the powder paving groove (2) and a lifting driving piece (42) which is arranged below the powder bed (41) and used for driving the powder bed (41) to lift.

3. A vibratory dusting apparatus as claimed in claim 1, wherein: the light-transmitting powder blocking mechanism (5) comprises a horizontal light-transmitting plate (51) and a first horizontal driving assembly (52) which is arranged on the rack (1) and used for driving the light-transmitting plate (51) to move horizontally.

4. A vibratory dusting apparatus as claimed in claim 3, wherein: and limiting grooves (21) for the light transmission plates (51) to pass through are formed in the tops of two sides of the powder paving groove (2) corresponding to the motion direction of the light transmission plates (51).

5. A vibratory dusting apparatus as claimed in claim 1, wherein: shovel powder mechanism (3) including pushing away powder shovel (31) and pushing away powder driving piece (32), it locates to be used for the drive to push away powder shovel (31) motion in order to shovel except with the unnecessary powder on lifting powder bed mechanism (4) on frame (1) to push away powder driving piece (32).

6. A vibratory dusting apparatus as claimed in claim 5, characterised in that: push away powder driving piece (32) and be flexible driving piece, push away powder shovel (31) and locate the drive end that pushes away powder driving piece (32).

7. A vibratory dusting apparatus as claimed in any one of claims 1 to 6, characterised in that: spread powder mechanism (6) and set up powder case (61) of shop on frame (1) and locate powder case (62) that falls in spreading powder case (61) including the removal, be equipped with second translation drive assembly (8) that are used for the drive to spread powder case (61) horizontal migration on frame (1), the bottom that powder case (62) falls is equipped with water conservancy diversion face (621), the top of slope is equipped with into powder mouth (622), powder case (62) that falls is equipped with powder mouth (623) in the bottom of water conservancy diversion face (621), spread powder case (61) be equipped with in the below of powder mouth (623) that falls and spread powder mouth (611), be equipped with powder mouth (612) in the top of advancing powder mouth (622), powder case (62) that falls is equipped with in powder mouth (623) department and puts powder valve body mechanism (63), vibration mechanism (7) are located powder case (62) and are spread between powder case (61) for the drive falls powder case (62) vibration.

8. A vibratory dusting apparatus as claimed in claim 7, characterised in that: the powder discharge valve body mechanism (63) comprises a valve plate (631) arranged at the powder falling port (623) in a sliding mode and an opening and closing driving assembly (632) used for driving the valve plate (631) to slide to open and close the powder falling port (623).

9. A vibratory dusting apparatus as claimed in claim 7, characterised in that: the second translation driving assembly (8) comprises at least two screw rods (81) which are arranged on the rack (1) in parallel and a rotary driving piece (82) used for driving the screw rods (81) to rotate synchronously, and the screw rods (81) penetrate through the powder spreading box (61) and are in threaded connection with the powder spreading box (61).

10. A vibratory dusting apparatus as claimed in any one of claims 1 to 6, characterised in that: vibration mechanism (7) including locating vibrating motor (71) on shop's powder case (61) and locating vibrator (72) of vibrating motor (71) drive end, the drive end and the powder box (62) that fall of vibrator (72) are connected, it is equipped with elastic component (9) to fall powder box (62) and shop to fill up between powder case (61).