CN214557399U - Base shaft type SLM metal printing device - Google Patents

Abstract

The utility model discloses a base shaft type SLM metal printing device, which comprises a powder screening machine and a powder supplementing and scraping integrated device; the first discharge port and the second discharge port of the powder screening machine are communicated with a raw material box of the powder supplementing and scraping integrated device through powder feeding pipes; and a vacuum conveyor is arranged on the powder feeding pipe. The base shaft type SLM metal printing device has a simple structure, is convenient to use, realizes automatic feeding, improves the printing efficiency and reduces the labor intensity; firstly pass through the quick sifter of powder shifter realization material, it has not only improved the sifter efficiency of material, and reliable operation, the maintenance of being convenient for, later adoption mend the powder and scrape integrative device of powder and print, print effectually, still have the metal powder advantage such as after being convenient for retrieve the printing.

Description

Base shaft type SLM metal printing device

Technical Field

The utility model relates to a SLM printing apparatus technical field, concretely relates to base shaft type SLM metal printing device.

Background

SLM, Selective Laser Melting, is a more industrial method of 3D printing, moving a roller to push metal particles through a printing area, then powerful Laser will track the current layer of the object to be printed, selectively fuse parts of the particles together according to the designed model, once the current layer is completed, the roller moves back and forth again, bringing a new layer of metal particles, which are actually completely fused when using SLM, and they fuse together more firmly, forming an extremely strong object, which can also be printed as a whole, without the need to assemble different parts, which further reduces the possibility of faults or errors during assembly, based on the benefits of this design method, they are used in industries with very low tolerance, such as aerospace, mainly for 3D printing parts of small aero engines, mostly be rotary part, can shorten the research and development cycle that novel aerospace was equipped, optimize the part structure, weight reduction reduces stress concentration, increases life, also can be used for the restoration of part to take shape to and cooperate with traditional manufacturing technology, the intercommunication is complementary.

In the use process of the base shaft type SLM metal printer, metal powder for printing needs to be continuously conveyed into a corresponding powder bin to ensure continuous work of the SLM metal printer, and in order to ensure smooth printing and meet different quality requirements, different printed parts need to adopt metal powder with different particle sizes, so that the metal powder conveyed to the printer needs to be sieved to meet the use requirements of equipment; can produce a large amount of recovery metal powder after printing the completion simultaneously, but the particle distribution range of retrieving metal powder is wide, needs sieve powder rear to it and can use, and the powder shifter sieve among the prior art efficiency of powder is lower, can not satisfy the operation requirement of printer.

In addition, the quality requirements of important parts on aerospace equipment are very high, when powder is added, if a hole is formed in the powder, the powder can be reflected in the inner wall of a product, if the powder is not paved flatly enough, the surface of the powder has raised scattered powder, and due to the problem that laser needs to be focused, the laser cannot correctly melt metal particles due to unevenness, so that the product quality is fatal, the existing 3D printer is not ideal in convenient control, and the Chinese patent publication No. CN206997776U discloses a powder feeding and spreading device of an SLM type 3D printer, which comprises a roller, a slide rail, a powder feeding frame, a roller shaft, a powder feeding funnel, a transverse partition plate, a spring A, a support rod A, a transverse shaft, a sleeve A, a support rod B, a scraper, a sleeve B and a spring B; the gyro wheel axle is rotatable to be installed on sending the powder frame, the gyro wheel can be followed the slide rail and made a round trip to roll, send powder funnel fixed mounting on sending the powder frame, cross slab fixed mounting is inside sending the powder funnel, send powder frame bottom both sides welded fastening respectively have sleeve A and sleeve B, wherein be equipped with spring A in the sleeve A, be equipped with spring B in the sleeve B, branch B fixed mounting is at the top of scraper blade, the cross slab in sending the powder funnel that sets up through the device has network structure, can disperse well added metal powder, prevent it excessively to pile up, the back and forth slip and the roll of scraper blade and roller, make metal powder level and smooth, but do not extrude the powder, there is the hollow condition, and, when scraper blade and roller return stroke, it drops on the powder plane of just strickleing off to have scattered powder on the roller, lead to the powder still not level.

Based on the circumstances, the utility model provides a basic shaft type SLM metal printing device can effectively solve above problem.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a base shaft type SLM metal printing device. The base shaft type SLM metal printing device has a simple structure, is convenient to use, realizes automatic feeding, improves the printing efficiency and reduces the labor intensity; firstly pass through the quick sifter of powder shifter realization material, it has not only improved the sifter efficiency of material, and reliable operation, the maintenance of being convenient for, later adoption mend the powder and scrape integrative device of powder and print, print effectually, still have the metal powder advantage such as after being convenient for retrieve the printing.

The utility model discloses a following technical scheme realizes:

a base shaft type SLM metal printing device comprises a powder screening machine and a powder supplementing and scraping integrated device; the first discharge port and the second discharge port of the powder screening machine are communicated with a raw material box of the powder supplementing and scraping integrated device through powder feeding pipes; a vacuum conveyor is arranged on the powder feeding pipe;

as a preferred technical scheme of the utility model, the powder sieving machine comprises a powder sieving box, wherein the top of the powder sieving box is provided with a feed inlet, and the bottom of the powder sieving box is provided with a first discharge port and a second discharge port in parallel; a powder sieving frame is arranged in the powder sieving box in a sliding manner, and a screen is fixedly arranged on the powder sieving frame; a connecting shaft extending out of the powder sieving box is fixedly arranged on one side of the powder sieving frame; the powder sieving box is characterized in that a driving motor is fixedly arranged on the powder sieving box and connected with a rotating disk, a connecting rod is eccentrically arranged on the rotating disk, and the connecting rod and the connecting shaft are respectively hinged with two ends of the same connecting rod.

As a preferred technical scheme of the utility model, mend powder and scrape integrative device of powder and include the fuselage, the fuselage outer wall rotates and is connected with the chamber door, chamber door outer wall fixedly connected with second handle, the inboard fixedly connected with baffle of fuselage, the recovery passageway has been seted up to the baffle inner wall, fixed surface is connected with the second cylinder on the baffle, the inboard fixedly connected with guide rail of fuselage, fuselage top fixedly connected with exhaust fan, the inside powder that is provided with of fuselage is retrieved subassembly, laser assembly, is mended the powder and scrapes powder subassembly, lifting unit, powder is retrieved subassembly, is mended the powder and scrapes powder subassembly and fuselage sliding connection, laser assembly and fuselage fixed connection, lifting unit and baffle fixed connection.

As a preferred technical scheme of the utility model, two sides of the powder sieving frame are provided with mutually symmetrical connecting shafts, the powder sieving box is provided with a rotating shaft in a rotating way, and the rotating shaft is connected with a driving motor through a transmission gear; the two ends of the rotating shaft extend out of the powder sieving box, rotating disks are arranged on the two sides of the rotating shaft, a connecting rod is eccentrically connected with the rotating disks, and the other end of the connecting rod is hinged to the connecting shaft.

As an optimized technical scheme of the utility model, be provided with the backup pad in the sieve powder case, be provided with the gyro wheel with the backup pad adaptation on the sieve powder frame.

As a preferred technical scheme of the utility model, the transversal L shape of personally submitting of backup pad, and both sides all are provided with the closing plate around the backup pad.

As a preferred technical scheme of the utility model, feed inlet fixedly connected with hopper, the exit end of hopper slides and is provided with the regulating plate, be provided with on the regulating plate with the fixing bolt of sieve powder case adaptation.

As an optimized technical scheme of the utility model, still be provided with the fixed plate on the sifter frame, the screen cloth is fixed in between sifter frame and the fixed plate, just link to each other through fastening bolt is fixed between fixed plate and the sifter frame.

As an optimized technical scheme of the utility model, the both sides and the rear side of sifting frame all are provided with the baffle.

As an optimal technical scheme of the utility model, the powder recovery subassembly includes the drawer, drawer sliding connection is inside the fuselage, the drawer outer wall fixedly connected with first in command, the drawer sets up in the recovery passageway below.

As a preferred technical scheme of the utility model, the laser subassembly includes the radiator, radiator fixed connection is at the inboard top of fuselage, fixed surface is connected with the laser module under the radiator, fixed surface is connected with the protective glass under the laser module, the radiator link up with the exhaust fan.

As a preferred technical proposal of the utility model, the powder supplementing and scraping component comprises a sliding plate which is connected on the upper side of a guide rail in a rolling way, the two sides of the sliding plate are rotatably connected with rollers, the sliding plate is connected with the guide rail in a rolling way through the rollers, the lower surface of the sliding plate is fixedly connected with a first fixed seat and a second fixed seat, a rolling shaft and a first auxiliary roller are rotatably connected between the first fixed seat and the second fixed seat, a second auxiliary roller is fixedly connected between the first fixed seat and the second fixed seat, the upper surface of the clapboard is fixedly connected with a second motor, the output end of the second motor is fixedly connected with a second belt wheel, one end of the rolling shaft is fixedly connected with a fourth belt wheel, a second belt is sleeved between the fourth belt wheel and the second belt wheel, the other end of the rolling shaft is fixedly connected with a first gear, one end of the first auxiliary roller is fixedly connected with a second gear, the first gear is meshed with the second gear, the lower surface of the sliding plate is fixedly connected with a push plate, and the push plate is fixedly connected with the extending end of the second cylinder.

As a preferred technical scheme of the utility model, sliding plate inner wall fixedly connected with raw material tank, the first motor of raw material tank top fixedly connected with, the first band pulley of first motor output fixedly connected with, the raw material tank inner wall rotates and is connected with semicircle valve shaft, semicircle valve shaft one end runs through raw material tank outer wall and fixedly connected with third band pulley, the cover is equipped with first belt between first band pulley and the third band pulley.

As a preferred technical scheme of the utility model, lifting unit includes the printing box, printing box fixed connection is at the baffle inner wall, the first cylinder of the inside fixedly connected with of printing box, first cylinder stretches out the fixedly connected with backup pad, fixed surface is connected with the support column in the backup pad, support column upper end fixedly connected with workstation, workstation outer wall fixedly connected with sealing washer.

Compared with the prior art, the utility model, following advantage and beneficial effect have:

the base shaft type SLM metal printing device has a simple structure, is convenient to use, realizes automatic feeding, improves the printing efficiency and reduces the labor intensity; firstly pass through the quick sifter of powder shifter realization material, it has not only improved the sifter efficiency of material, and reliable operation, the maintenance of being convenient for, later adoption mend the powder and scrape integrative device of powder and print, print effectually, still have the metal powder advantage such as after being convenient for retrieve the printing.

The powder sieving machine comprises a powder sieving box, a sliding type powder sieving frame and only a powder sieving frame are arranged in the powder sieving box, a screen is fixedly arranged on the powder sieving frame, a feeding hole is arranged at the upper side of the powder sieving box, a first discharging hole and a second discharging hole are arranged at the bottom of the powder sieving box, a driving motor is also arranged on the powder sieving box, the driving motor is connected with a rotating disk, the rotating disk is eccentrically connected with a connecting rod, and the connecting rod is hinged with a connecting shaft; when the screen powder rack is used, the driving motor rotates, the eccentrically arranged connecting rod drives the screen powder rack to do reciprocating motion, materials with smaller particle sizes enter the first discharge hole through the screen to be discharged, materials with larger particle sizes are blocked by the screen, and the materials are thrown out of the screen powder rack due to inertia when the screen powder rack turns, and are discharged through the second discharge hole; the utility model discloses a reciprocating motion mechanism realizes the quick sieve powder of material, and it has not only improved the sieve powder efficiency of material, simple structure simultaneously, and reliable operation is convenient for maintain.

Adopt the utility model discloses can sieve the powder fast to the recovery powder after printer is with powder or printing, carry out accurate classification to the raw materials, its sieve powder efficiency is higher simultaneously, guarantees that the raw materials satisfies the operation requirement of printer.

1. The powder sieving machine comprises a powder sieving box, a sliding type powder sieving frame and a screen are arranged in the powder sieving box, a feed inlet is arranged at the upper side of the powder sieving box, a first discharge port and a second discharge port are arranged at the bottom of the powder sieving box, a driving motor is also arranged on the powder sieving box, the driving motor is connected with a rotating disk, the rotating disk is eccentrically connected with a connecting rod, and the connecting rod is hinged with a connecting shaft;

the utility model discloses a driving motor rotates when powder shifter uses, and the connecting rod through eccentric setting drives the connecting axle and makes the horizontal direction internal slip to realize dragging to and fro the powder shifter, and the material that the granularity is less enters into first discharge gate through the screen cloth and gets rid of in the course of powder shifter reciprocating motion, and the material that the granule is bigger is blockked by the screen cloth, and when the powder shifter turned to, it was thrown away from one end of powder shifter under inertial effect, and discharged through the second discharge gate;

compared with the prior art, the powder sieving machine of the utility model realizes the rapid powder sieving of materials through the reciprocating mechanism, which not only improves the powder sieving efficiency of materials, is not only suitable for the material powder sieving before printing, but also suitable for the powder sieving of the materials recovered after printing, and meets the rapid processing requirement of the recoverable materials; meanwhile, the structure is simple, and the working stability and the reliability are effectively ensured.

The powder screening machine of the utility model is provided with connecting shafts on both sides of the powder screening frame, and simultaneously the driving motor is respectively connected with the powder screening frame through the rotating shaft, on one hand, both sides of the powder screening frame are all stressed, the uniformity of the stress of the powder screening frame can be effectively improved, the powder screening frame is prevented from being inclined to one side, the smoothness of the operation of the equipment can be improved, and meanwhile, the abrasion of each part can be reduced; on the other hand, the utility model can achieve the above purpose through a simple structure, and has simple structure and convenient maintenance; meanwhile, the synchronous transmission of the powder sieving frame is realized, and the coordination of the movement of the equipment is better.

The powder sieving machine of the utility model is also provided with a support plate in the powder sieving box, the support plate is matched with the powder sieving frame, and meanwhile, the powder sieving frame is arranged in an L shape, and the head end and the tail end of the powder sieving frame are provided with the sealing plates, on one hand, the support plate provides stable support for the operation of the powder sieving frame, and meanwhile, the idler wheels can effectively improve the operation stability of the equipment and reduce the abrasion of the equipment; meanwhile, the L-shaped supporting plate and the sealing plates at the head and the tail of the L-shaped supporting plate are effective in limiting the idler wheels, so that the stability and the reliability of connection of the powder sieving frame and the powder sieving box are ensured.

The feed inlet of powder shifter still is provided with the hopper, it still is provided with fixing bolt on the regulating plate while regulating plate to slide on the hopper, through the opening size of regulating plate control feed inlet to realize in order reinforced, satisfy the dual requirement of sieve powder quality and machining efficiency, improve equipment's work efficiency, its regulation is simple simultaneously, convenient operation.

The powder shifter still is provided with the fixed plate on the powder sifter frame, through fixed plate centre gripping screen cloth, can realize spacing the stability of screen cloth in one of them aspect, guarantees its job stabilization nature, and its easy dismounting of on the other hand is favorable to the maintenance of equipment.

The powder shifter all is provided with the baffle in the both sides and the rear side of sifter frame, through baffle to the both sides and the rear side spacing of sifter frame, avoid unqualified metal powder to drop first discharge gate or second discharge gate from both sides and rear side, cause the compounding to improve the sifter quality.

Mend powder and scrape integrative device of powder, push through the roll between roller bearing and the first pair roller after the powder is put in, make the powder more compact reality, semicircle valve shaft can be convenient open and close the raw material tank, through the second pair roller that does not rotate that sets up in the roller bearing top, glue the powder that rolls on the roller bearing in the return stroke and can be scraped by the second pair roller that is in the same place with the roller bearing extrusion, ensure that the region that has rolled does not have scattered powder and drops.

Compared with the prior art, this mend powder and scrape integrative device of powder, through setting up former feed tank above roller bearing and first pair roller, the powder is put in the back and is extruded through the roll between roller bearing and the first pair roller, makes the powder compacter, through the semicircle valve shaft that sets up on the former feed tank, under the drive of first motor, can be convenient open and close former feed tank, avoid continuously throwing the material and cause frequent reinforced. Through the second auxiliary roller which is arranged above the roller and does not rotate, the roller rolls clockwise on the metal powder plane of the workbench in the return stroke, redundant powder is either swept to the recycling channel, and the powder stuck on the roller can be scraped by the second auxiliary roller which is extruded together with the roller, so that the rolled area is ensured not to have scattered powder to fall off.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural view of the powder sifter of the utility model;

fig. 3 is a schematic view of the internal structure of the powder sieving box of the powder sieving machine of the present invention;

fig. 4 is a schematic view of a front view structure of a powder sieving box of the powder sieving machine of the utility model;

fig. 5 is a schematic structural view of another embodiment of the powder sifter according to the present invention;

fig. 6 is a schematic view of the internal structure of a powder sieving box according to another embodiment of the powder sieving machine of the present invention;

fig. 7 is a schematic front view of a powder sieving box of another embodiment of the powder sieving machine of the present invention;

fig. 8 is a schematic view of the overall structure of the powder supplementing and scraping integrated device of the present invention;

fig. 9 is a cross-sectional view of the whole structure of the powder supplementing and scraping integrated device of the utility model;

FIG. 10 is a partial enlarged view of FIG. 9-A of the powder supplementing and scraping integrated device of the present invention;

FIG. 11 is a partial enlarged view of FIG. 9-B of the powder supplementing and scraping integrated device of the present invention;

FIG. 12 is a partial enlarged view of FIG. 9-C of the powder supplementing and scraping integrated device of the present invention;

fig. 13 is a side sectional view of the whole structure of the powder supplementing and scraping integrated device of the present invention;

FIG. 14 is a partial enlarged view of FIG. 13-D of the powder supplementing and scraping integrated device of the present invention;

fig. 15 is a cross sectional view of the raw material box, the rolling shaft, the first auxiliary roller and the second auxiliary roller of the integrated powder supplementing and scraping device of the utility model;

fig. 16 is the utility model discloses mend powder and scrape the baffle structure schematic diagram of integrative device of powder.

In the figure: 1. a powder screening machine; 3. a powder feeding pipe; 6. a powder supplementing and scraping integrated device;

11. a powder sieving box; 12. a feed inlet; 13. a first discharge port; 14. a second discharge port; 15. a powder sieving frame; 16. screening a screen; 17. a connecting shaft; 18. a drive motor; 19. rotating the disc; 110. a connecting rod; 111. a connecting rod; 112. a rotating shaft; 113. a transmission gear; 114. a support plate; 115. a roller; 116. a sealing plate; 117. a hopper; 118. an adjusting plate; 119. fixing the bolt; 120. a fixing plate; 121. fastening a bolt; 122. a baffle plate;

61. a body; 62. a drawer; 63. a first handle; 64. a box door; 65. a second handle; 66. an exhaust fan; 67. a heat sink; 68. a laser module; 69. protective glasses; 610. a guide rail; 611. a sliding plate; 612. a roller; 613. a first motor; 614. a first pulley; 615. a raw material tank; 616. a second motor; 617. a second pulley; 618. a partition plate; 619. a work table; 620. a seal ring; 621. a support pillar; 622. pushing the plate; 623. a support plate; 624. a first cylinder; 625. a recovery channel; 626. a first belt; 627. a first sub-roll; 628. a roller; 629. a first gear; 630. a second gear; 631. a first fixed seat; 632. a second sub-roll; 633. a semicircular valve shaft; 634. a third belt pulley; 635. a second fixed seat; 636. a fourth pulley; 637. a second belt; 638. a second cylinder; 639. a print box.

Detailed Description

In order to make the technical solution of the present invention better understood by those skilled in the art, the following description of the preferred embodiments of the present invention is given with reference to the accompanying examples, but it should be understood that the drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent.

Example 1:

as shown in fig. 1 to 16, a base shaft type SLM metal printing device comprises a powder sieving machine and a powder supplementing and scraping integrated device; the first discharge port and the second discharge port of the powder screening machine are communicated with a raw material box of the powder supplementing and scraping integrated device through powder feeding pipes; a vacuum conveyor is arranged on the powder feeding pipe;

as a preferred technical scheme of the utility model, the powder sieving machine comprises a powder sieving box, wherein the top of the powder sieving box is provided with a feed inlet, and the bottom of the powder sieving box is provided with a first discharge port and a second discharge port in parallel; a powder sieving frame is arranged in the powder sieving box in a sliding manner, and a screen is fixedly arranged on the powder sieving frame; a connecting shaft extending out of the powder sieving box is fixedly arranged on one side of the powder sieving frame; the powder sieving box is characterized in that a driving motor is fixedly arranged on the powder sieving box and connected with a rotating disk, a connecting rod is eccentrically arranged on the rotating disk, and the connecting rod and the connecting shaft are respectively hinged with two ends of the same connecting rod.

As a preferred technical scheme of the utility model, mend powder and scrape integrative device of powder and include the fuselage, the fuselage outer wall rotates and is connected with the chamber door, chamber door outer wall fixedly connected with second handle, the inboard fixedly connected with baffle of fuselage, the recovery passageway has been seted up to the baffle inner wall, fixed surface is connected with the second cylinder on the baffle, the inboard fixedly connected with guide rail of fuselage, fuselage top fixedly connected with exhaust fan, the inside powder that is provided with of fuselage is retrieved subassembly, laser assembly, is mended the powder and scrapes powder subassembly, lifting unit, powder is retrieved subassembly, is mended the powder and scrapes powder subassembly and fuselage sliding connection, laser assembly and fuselage fixed connection, lifting unit and baffle fixed connection.

Example 2:

as shown in fig. 1 to 16, a base shaft type SLM metal printing device comprises a powder sieving machine and a powder supplementing and scraping integrated device; the first discharge port and the second discharge port of the powder screening machine are communicated with a raw material box of the powder supplementing and scraping integrated device through powder feeding pipes; a vacuum conveyor is arranged on the powder feeding pipe; the first discharge port and the second discharge port are communicated with a raw material box of the powder supplementing and scraping integrated device through the same powder feeding pipe; or the first discharge port and the second discharge port are respectively communicated with a raw material box of the powder supplementing and scraping integrated device through two different powder feeding pipes;

the powder screening machine is structurally shown in fig. 2 to 4, and comprises a powder screening box, wherein a feeding hole is formed in the top of the powder screening box, and a first discharging hole and a second discharging hole are formed in the bottom of the powder screening box in parallel; support plates are arranged on two sides of the powder sieving box, the cross sections of the support plates are L-shaped, and the front end and the rear end of each support plate are sealed by sealing plates; a powder sieving frame is arranged in the powder sieving box, rolling wheels are arranged on two sides of the powder sieving frame and are inserted into the supporting plate, so that the powder sieving frame is slidably connected with the powder sieving box; a screen is fixedly arranged on the powder screening frame, a first discharge hole is formed right below the screen, and the second discharge hole is positioned at the rear side of the first discharge hole;

one side of the powder sieving box is also provided with a chute, one side of the powder sieving frame is provided with a connecting shaft, the connecting shaft extends out of the powder sieving box through the chute, the powder sieving box is also fixedly provided with a driving motor, an output shaft of the driving motor is fixedly connected with a rotating disc, the rotating disc is eccentrically provided with a connecting rod, the connecting rod is hinged with a connecting rod, and the other end of the connecting rod is hinged with the connecting shaft, so that the driving motor is in power connection with the powder sieving frame;

further, in another embodiment, the powder screening machine, as shown in fig. 5 to 7, includes a powder screening box, a feed inlet is disposed at the top of the powder screening box, a hopper is fixedly connected to the feed inlet, an adjusting plate is slidably disposed at the outlet end of the hopper, and a fixing bolt adapted to the powder screening box is disposed on the adjusting plate;

the bottom of the powder sieving box is provided with a first discharge port and a second discharge port in parallel, a powder sieving frame is connected in the powder sieving box in a sliding manner through a support plate, one side of the powder sieving frame, which is close to the second discharge port, is provided with an opening, and the other three sides of the powder sieving frame are fixedly provided with baffles; meanwhile, the powder sieving frame is also provided with a fixing plate, a corresponding connecting hole is formed between the fixing plate and the powder sieving frame, and a fastening bolt is arranged in the connecting hole; meanwhile, the screen mesh is prevented from being arranged between the fixed plate and the powder sieving frame, so that the screen mesh is fixed through the fixed plate;

sliding grooves are symmetrically formed in two sides of the powder sieving box, connecting shafts corresponding to the sliding grooves are arranged on two sides of the powder sieving frame, a driving motor is fixedly arranged on the powder sieving box, a rotating shaft is rotatably arranged on the powder sieving box, and the rotating shaft is in power connection with the driving motor through a transmission gear; the both ends of rotation axis are stretched out the both sides of sieve powder case, and its both sides are all fixed and are provided with the rotary disk, and equal eccentric connection has the connecting rod on the rotary disk, and it has the connecting rod to articulate on the connecting rod, the other end and the connecting axle of connecting rod are articulated to realize that driving motor is connected with the power of sieve powder frame.

The utility model discloses driving motor rotates when using, and the connecting rod through eccentric setting drives the connecting axle and makes the horizontal internal slip to realize dragging to and fro the sifter frame, and the material with smaller granularity enters into first discharge gate through the screen cloth and gets rid of in the course of sifter frame reciprocating motion, and the material with larger granule is blocked by the screen cloth, and when the sifter frame turned to, it was thrown out from one end of sifter frame under the effect of inertia, and discharged through the second discharge gate;

compared with the prior art, the utility model realizes the rapid powder sieving of the materials through the reciprocating mechanism, which not only improves the powder sieving efficiency of the materials, but also is suitable for the powder sieving of the materials before printing and the powder sieving of the materials recovered after printing, thereby meeting the rapid processing requirement of the recoverable materials; meanwhile, the structure is simple, and the working stability and the reliability are effectively ensured.

Referring to fig. 8-16 the utility model discloses a mend powder and scrape integrative device of powder: including the fuselage, the fuselage outer wall rotates and is connected with the chamber door, chamber door outer wall fixedly connected with second handle, the inboard fixedly connected with baffle of fuselage, the recovery passageway has been seted up to the baffle inner wall, fixed surface is connected with the second cylinder on the baffle, the inboard fixedly connected with guide rail of fuselage, fuselage top fixedly connected with exhaust fan, the inside powder recovery subassembly that is provided with of fuselage, laser assembly, mend the powder and scrape whitewashed subassembly, lifting unit, the powder recovery subassembly, mend the powder and scrape whitewashed subassembly and fuselage sliding connection, laser assembly and fuselage fixed connection, lifting unit and baffle fixed connection.

Specifically, the powder recycling assembly comprises a drawer, the drawer is slidably connected inside the machine body, a first handle is fixedly connected to the outer wall of the drawer, the drawer is arranged below the recycling channel, redundant powder drops into the drawer through the recycling channel, and the powder is conveniently recycled.

Specifically, the laser assembly comprises a radiator, the radiator is fixedly connected to the top of the inner side of the machine body, the laser module is fixedly connected to the lower surface of the radiator, a protective mirror is fixedly connected to the lower surface of the laser module, the radiator is communicated with the exhaust fan, the exhaust fan can remove heat emitted by the laser assembly during operation, and damage to equipment due to overheating is avoided.

Specifically, the powder supplementing and scraping assembly comprises a sliding plate, the sliding plate is connected to the upper side of a guide rail in a rolling manner, rollers are rotatably connected to two sides of the sliding plate, the sliding plate is connected with the guide rail in a rolling manner through the rollers, a first fixed seat and a second fixed seat are fixedly connected to the lower surface of the sliding plate, a rolling shaft and a first auxiliary roller are rotatably connected between the first fixed seat and the second fixed seat, a second auxiliary roller is fixedly connected between the first fixed seat and the second fixed seat, a second motor is fixedly connected to the upper surface of a partition plate, a second belt wheel is fixedly connected to the output end of the second motor, one end of the rolling shaft is fixedly connected with a fourth belt wheel, a second belt is sleeved between the fourth belt wheel and the second belt wheel, a first gear is fixedly connected to the other end of the rolling shaft, a second gear is fixedly connected to one end of the first auxiliary roller, the first gear is meshed with the second gear, a push plate is fixedly connected to the lower surface of the sliding plate, and the push plate is fixedly connected with the extending end of a second air cylinder, promote the push pedal through the second cylinder, drive the sliding plate and carry out the back-and-forth movement, realize mending the powder and scrape the function of powder, the vice roller of second is non-rotating, and all the other roller bearings in close contact with play the effect of scraping the powder when the return stroke.

Concretely, sliding plate inner wall fixedly connected with raw material tank, the first motor of raw material tank top fixedly connected with, the first band pulley of first motor output fixedly connected with, raw material tank inner wall rotates and is connected with semicircle valve shaft, semicircle valve shaft one end runs through raw material tank outer wall and fixedly connected with third band pulley, the cover is equipped with first belt between first band pulley and the third band pulley, the raw material tank export sets up between roller bearing and first secondary roller, it is accurate to throw the material, through semicircle valve shaft, can be accurate when need not throw the material close the raw material tank.

Specifically, lifting unit includes the printing box, and printing box fixed connection is at the baffle inner wall, the first cylinder of the inside fixedly connected with of printing box, and first cylinder stretches out fixedly connected with backup pad, and fixed surface is connected with the support column in the backup pad, support column upper end fixedly connected with workstation, workstation outer wall fixedly connected with sealing washer, and first cylinder drives the action of progressively moving down of workstation.

Mend powder and scrape the theory of operation of integrative device of powder:

the second cylinder drives the powder supplementing and scraping component to move forwards, the second motor drives the rolling shaft and the first auxiliary roller to rotate, the first motor drives the semicircular valve shaft to rotate, the raw material box (using the metal powder screened by the powder screening machine of the utility model) is opened, the metal powder enters the rolling shaft between the first auxiliary roller from the outlet at the lower end of the raw material box and is extruded by the raw material box and then laid on the workbench, the powder is tighter, and no cavity exists;

the metal powder is fully paved on the workbench through the extension of the second cylinder, the first motor drives the semicircular valve shaft to rotate, the raw material box is closed, the metal powder is not put in, the second cylinder retracts to drive the powder supplementing and scraping component to move backwards, the roller shaft sweeps away redundant powder backwards, the metal powder adhered on the roller shaft is scraped by the second auxiliary roller and cannot fall on a rolled area, after the retraction of the second cylinder is completed, the laser component works, after the work of the laser component is completed, the first cylinder drives the workbench to move downwards by one layer, the actions are repeated until the product is printed,

the redundant powder enters the drawer through the recovery channel to be recovered;

the raw material box is arranged above the rolling shaft and the first auxiliary roller, and the powder is extruded through rolling between the rolling shaft and the first auxiliary roller after being put in, so that the powder is more compact;

through the semicircle valve shaft that sets up on the raw material tank, under the drive of first motor, can be convenient open and close the raw material tank, avoid continuously throwing the material and cause frequently reinforced.

Through the second auxiliary roller which is arranged above the roller and does not rotate, during return stroke, the roller rolls clockwise on the metal powder plane of the workbench, redundant powder is swept to the recycling channel, the powder stuck on the roller can be scraped by the second auxiliary roller which is in close contact with the roller, and the condition that scattered powder does not fall in the rolled area is ensured.

According to the description and drawings of the present invention, it is easy for those skilled in the art to manufacture or use the base shaft type SLM metal printing apparatus of the present invention, and the positive effects described in the present invention can be produced.

Unless otherwise specified, in the present invention, if the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate an orientation or positional relationship 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, rather than to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore, the terms describing orientation or positional relationship in the present invention are used for illustrative purposes only, and should not be construed as limiting the present patent, specific meanings of the above terms can be understood by those of ordinary skill in the art in light of the specific circumstances in conjunction with the accompanying drawings.

Unless expressly stated or limited otherwise, the terms "disposed," "connected," and "connected" are used broadly and encompass both fixed and removable connections, or integral connections; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The above is only the preferred embodiment of the present invention, not to the limitation of the present invention in any form, all the technical matters of the present invention all fall into the protection scope of the present invention to any simple modification and equivalent change of the above embodiments.

Claims (5)

1. A basic shaft type SLM metal printing device is characterized in that: comprises a powder sieving machine (1) and a powder supplementing and scraping integrated device (6);

the first discharge port (13) and the second discharge port (14) of the powder screening machine (1) are communicated with a raw material box (615) of the powder supplementing and scraping integrated device (6) through a powder feeding pipe (3);

a vacuum conveyor (4) is arranged on the powder feeding pipe (3);

the powder screening machine comprises a powder screening box (11), wherein a feeding hole (12) is formed in the top of the powder screening box (11), and a first discharging hole (13) and a second discharging hole (14) are formed in the bottom of the powder screening box in parallel; a powder sieving frame (15) is arranged in the powder sieving box (11) in a sliding manner, and a screen (16) is fixedly arranged on the powder sieving frame (15); a connecting shaft (17) extending out of the powder screening box (11) is fixedly arranged on one side of the powder screening frame (15); the powder sieving box (11) is also fixedly provided with a driving motor (18), the driving motor (18) is connected with a rotating disc (19), the rotating disc (19) is eccentrically provided with a connecting rod (110), and the connecting rod (110) and the connecting shaft (17) are respectively hinged with two ends of the same connecting rod (111);

the powder supplementing and scraping integrated device comprises a machine body (61), the outer wall of the machine body (61) is rotatably connected with a box door (64), the outer wall of the box door (64) is fixedly connected with a second handle (65), the inner side of the machine body (61) is fixedly connected with a clapboard (618), a recovery channel (625) is arranged on the inner wall of the clapboard (618), a second cylinder (638) is fixedly connected to the upper surface of the clapboard (618), the inner side of the machine body (61) is fixedly connected with a guide rail (610), the top of the machine body (61) is fixedly connected with an exhaust fan (66), the powder recovery component, the laser component, the powder supplementing and scraping component and the lifting component are arranged in the machine body (61), powder recovery unit, benefit powder and scrape whitewashed subassembly and fuselage (61) sliding connection, laser subassembly and fuselage (61) fixed connection, lifting unit and baffle (618) fixed connection.

2. The base axis SLM metal printing device according to claim 1, characterized by: two sides of the powder sieving frame (15) are provided with mutually symmetrical connecting shafts (17), the powder sieving box (11) is rotatably provided with a rotating shaft (112), and the rotating shaft (112) is connected with a driving motor (18) through a transmission gear (113); the two ends of the rotating shaft (112) extend out of the powder sieving box (11), rotating disks (19) are arranged on the two sides of the rotating shaft, a connecting rod (111) is eccentrically connected to each rotating disk (19), and the other end of each connecting rod (111) is hinged to the connecting shaft (17).

3. The base axis SLM metal printing device according to claim 1, characterized by: the powder sieving box (11) is internally provided with a supporting plate (114), and the powder sieving frame (15) is provided with a roller (115) matched with the supporting plate (114).

4. The base axis SLM metal printing device according to claim 3, characterized by: the cross section of the supporting plate (114) is L-shaped, the front side and the rear side of the supporting plate (114) are both provided with a sealing plate (116),

the powder screening machine is characterized in that the feeding port (12) is fixedly connected with a feeding hopper (117), an adjusting plate (118) is arranged at the outlet end of the feeding hopper (117) in a sliding mode, and a fixing bolt (119) matched with the powder screening box (11) is arranged on the adjusting plate (118).

5. The base axis SLM metal printing device according to claim 1, characterized by: still be provided with fixed plate (120) on sieve powder frame (15), screen cloth (16) are fixed in between sieve powder frame (15) and fixed plate (120), just pass through fastening bolt (121) between fixed plate (120) and the sieve powder frame (15) and fix and link to each other.

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