CN112139499A

CN112139499A - Metal laser molding combined machining equipment

Info

Publication number: CN112139499A
Application number: CN202011021670.3A
Authority: CN
Inventors: 不公告发明人
Original assignee: Zhaoqing Zhongcai Electromechanical Technology Research and Development Co Ltd
Current assignee: Zhaoqing Zhongcai Electromechanical Technology Research and Development Co Ltd
Priority date: 2020-09-25
Filing date: 2020-09-25
Publication date: 2020-12-29

Abstract

The invention relates to the technical field of metal processing, and discloses a metal laser modeling composite processing device which comprises a device shell, wherein a processing chamber is formed in the device shell, a slide rail is movably arranged above the processing chamber, a laser device is movably arranged in the middle of the slide rail, a metal plate is movably arranged below the laser device, and the bottom of the metal plate is fixedly arranged on a first electric push rod. According to the metal light modeling composite processing equipment and the operation method thereof, the scraper plate is movably arranged at the upper part of the metal plate, the inner part of the scraper plate is separated into the powder grooves through the partition plates, the metal powder can be uniformly dispersed through the powder grooves, the metal powder can be uniformly paved on the upper surface of the metal plate, the scraper plate is fixedly arranged at the bottom of one side of the feed opening, the metal powder on the metal plate is strickled by the scraper plate, and the metal powder on the metal plate can be ensured to be uniform in thickness.

Description

Metal laser molding combined machining equipment

Technical Field

The invention relates to the technical field of metal processing, in particular to a metal laser modeling composite processing device.

Background

There is known a metal optical modeling technique for manufacturing a three-dimensional shaped object by repeating (1) irradiating a powder layer made of a metal powder with a light beam (for example, a directional electron beam such as a laser beam) to form a sintered layer, and (2) applying a new powder layer on the obtained sintered layer and irradiating the powder layer with a light beam to further form a sintered layer, and according to this technique, a three-dimensional shaped object having a complicated shape can be obtained in a short time, and in particular, by irradiating a light beam having a high energy density to completely melt and solidify the metal powder, a state in which the sintering density reaches 100% is obtained, and a smooth surface is formed after the surface is completed, and thus the high-density shaped object can be applied to a mold for plastic molding or the like.

However, the metal powder used as a raw material for such a metal stereolithography needs to have characteristics different from those of a metal powder used for sintering of other powders such as those used for sintering after compression molding, and the particle diameter of the metal powder needs to be smaller than the thickness of a powder layer irradiated with a light beam, and when the particle diameter is small, the packing density of the powder is high, and the light beam absorption rate at the time of modeling is good, so that the sintering density can be increased, and the surface roughness of the obtained shaped object can be reduced, while when the particle diameter is too small, aggregation of the metal powder occurs, and the packing density of the powder is reduced, and the powder layer cannot be uniformly laid thin,

but the in-process that the integrated processing equipment of metal light molding returns powder pipe installation on the existing market still has certain defect at the use, when using integrated processing equipment of metal light molding to return powder pipe installation, because can be stained with the dust on the printing panel after integrated processing equipment of metal light molding returns powder pipe installation prints the completion, the dust is difficult to clear up, influence the result of use of integrated processing equipment of metal light molding returns powder pipe installation, metal light molding integrated processing equipment returns powder pipe installation can produce the dust when printing and drift into the air simultaneously, too much dust drifts into the air, easily inhaled by the user, influence the security that integrated processing equipment of metal light molding returns powder pipe installation and uses.

Disclosure of Invention

The invention provides metal laser molding composite processing equipment and a molding method thereof, which have the advantages of convenience in powder recovery, avoidance of powder hardening and good laying effect of powder inside a device, and solve the problems in the background art.

The invention provides the following technical scheme: a metal laser modeling composite processing device comprises a device shell, wherein a processing chamber is arranged in the device shell, a slide rail is movably arranged above the processing chamber, a laser device is movably arranged in the middle of the slide rail, a metal plate is movably arranged below the laser device, the bottom of the metal plate is fixedly arranged on a first electric push rod, the first electric push rod is fixedly arranged at the bottom of the processing chamber, a scraper is movably arranged at the upper side of the metal plate, a second electric push rod is fixedly arranged at one side of the scraper, the other end of the second electric push rod is fixedly arranged on the inner wall of the other side of the device shell, a case is fixedly arranged on a top plate of the other side of the device shell, a discharging device is movably arranged at one side above the second electric push rod, the other end of the discharging device is fixedly connected to a material pumping device, one side fixedly connected with inlet pipe of taking out material device, the other end fixed connection of inlet pipe is in the inside of raw material tank, raw material tank fixed mounting is in the bottom of device shell.

Preferably, the inside movable mounting of raw materials case has the roller bearing, the outside fixed mounting of roller bearing has the hair needle the one end fixed mounting of roller bearing has the belt pulley, the middle part movable mounting of belt pulley has the belt, the other end movable mounting of belt pulley has first motor.

Preferably, the upper portion of the raw material box is movably provided with a cover plate, the upper portion of the cover plate is provided with a connector, the inside of the connector is movably provided with a powder conveying pipe, the upper end of the powder conveying pipe is fixedly connected with a first powder falling port and a second powder falling port, the first powder falling port and the second powder falling port are both arranged inside the powder receiving groove, and the powder receiving groove is arranged on the upper portion of the powder receiving plate.

Preferably, the inside of the powder receiving groove is movably provided with a ball screw, the ball screws are movably arranged through bevel gears, the other end of each bevel gear is fixedly provided with a second motor, the middle of each ball screw is movably provided with a scraping block, the front end of each scraping block is fixedly provided with a scraper, and each scraper is in a dovetail shape.

Preferably, the inside fixed mounting of scraper blade has the division board, the powder groove has been seted up to the both sides of division board, the feed opening has been opened to the front side of scraper blade, the front end bottom fixed mounting of scraper blade has triangle-shaped scraper blade.

Preferably, the roller and the hair pin are arranged on the inner bottom side of the raw material box at equal intervals, and the hair pin is composed of a circle of metal fine pins arranged in a surrounding mode.

Preferably, the width of the scraper is consistent with the width of the inner part of the processing chamber, and the width of the scraper is larger than the width of the metal plate.

A molding method of metal laser molding composite processing equipment comprises the following steps:

the first step is as follows: powder connection, gas connection and power connection among devices are combined and installed, then the power of the devices is communicated, a drawing of a target part is pre-input into a control unit in the devices, then metal powder is extracted from the interior of a raw material box through a material extracting device and a feeding pipe, the metal powder is placed in a scraping plate through a discharging device, and the powder is uniformly distributed in a plurality of powder grooves in the scraping plate through partition plates;

the second step is that: then the scraper blade enters the interior of the processing chamber under the pushing of the second electric push rod, metal powder in the scraper blade is sent to the upper surface of the metal plate through the feed opening, in the process that the second electric push rod pulls the scraper blade to return, the metal powder paved on the upper part of the metal plate is kept consistent in thickness by scraping the powder through the metal scraper blade at the bottom side of one end of the scraper blade, then laser sintering is carried out on the metal powder through a laser device, the metal powder is sintered and molded, and then the steps are repeated until the metal processing is finished;

the third step: when processing on the metal sheet, the unnecessary metal powder in metal sheet upper portion falls by the edge of metal sheet, and be connecing the powder groove and connect the upper portion of powder board to be held back, connect the powder groove afterwards and connect scraping piece and the scraper blade on powder board upper portion to drive ball screw along with bevel gear and second motor and rotate, the drive is scraped the piece and is cleared up with the surface that connects the powder groove with the scraper blade butt joint powder groove, send the inside of feed box back to by first powder mouth and the second powder mouth that falls with metal powder, and the inside roller bearing of feed box and hair pin rotate under the drive of first motor and belt, stir the metal powder of feed box inside, prevent that metal powder from taking place to harden.

The invention has the following beneficial effects:

1. according to the metal laser molding composite processing equipment and the molding method thereof, the scraper plate is movably mounted at the upper part of the metal plate, the inner part of the scraper plate is separated into the powder grooves through the partition plates, the metal powder can be uniformly dispersed through the powder grooves, the metal powder can be uniformly laid on the upper surface of the metal plate, the scraper plate is fixedly mounted at the bottom of one side of the feed opening, the metal powder on the metal plate is strickled by the scraper plate, and the metal powder on the metal plate can be ensured to be uniform in thickness.

2. According to the metal laser modeling composite processing equipment and the modeling method thereof, the powder receiving plate is movably arranged below the metal plate, and the powder receiving plate is provided with the first powder falling port, the second powder falling port and the powder receiving groove, so that redundant metal powder on the metal plate can be conveniently recycled through the first powder falling port, the second powder falling port and the powder receiving groove, and the waste of raw materials is avoided.

3. According to the metal laser molding combined machining equipment and the molding method thereof, the ball screw is movably mounted inside the powder receiving groove, the scraping block and the scraping plate are movably mounted in the middle of the ball screw, the ball screw is driven to rotate through the bevel gear and the second motor, so that the scraping block and the scraping plate are driven to move, the metal powder in the powder receiving groove and the metal powder in the upper portion of the powder receiving plate are cleaned through the scraping block and the scraping plate, and the recovery of the powder is guaranteed.

4. According to the metal laser molding composite processing equipment and the molding method thereof, the rolling shaft and the hair pins are movably mounted inside the raw material box, so that metal powder in the raw material box can be stirred conveniently through rotation of the hair pins, dust hardening caused by long-term stacking and pressing of the powder is avoided, and the use convenience of the dust is improved.

Drawings

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

FIG. 2 is a rear view of the structure of the present invention;

FIG. 3 is a schematic view of a portion of the present invention;

FIG. 4 is a schematic view of a feed bin of the present invention;

FIG. 5 is a schematic view of a hair pin of the present invention;

FIG. 6 is a schematic view of a second electric putter of the present invention;

FIG. 7 is a schematic view of the present invention at configuration A;

FIG. 8 is a schematic view of a cover plate according to the present invention;

FIG. 9 is an exploded view of the powder receiving plate according to the present invention;

fig. 10 is a schematic view of a scraper block of the present invention.

In the figure: 1. a device housing; 2. a processing chamber; 3. a laser device; 4. a slide rail; 5. a metal plate; 6. a first electric push rod; 7. a squeegee; 8. a powder groove; 9. a partition plate; 10. a feeding port; 11. a second electric push rod; 12. a discharging device; 13. a material pumping device; 14. a feed pipe; 15. a raw material tank; 16. a roller; 17. knitting needles; 18. a belt pulley; 19. a first motor; 20. a belt; 21. a cover plate; 22. a connecting port; 23. a powder feeding pipe; 24. a powder receiving plate; 25. a first powder falling port; 26. a second powder falling port; 27. a powder receiving groove; 28. a ball screw; 29. scraping the block; 30. a squeegee; 31. a bevel gear; 32. a second motor; 33. a case.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-10, a metal laser modeling composite processing device comprises a device housing 1, a processing chamber 2 is arranged inside the device housing 1, a slide rail 4 is movably arranged above the processing chamber 2, a laser device 3 is movably arranged in the middle of the slide rail 4, a metal plate 5 is movably arranged below the laser device 3, the bottom of the metal plate 5 is fixedly arranged on a first electric push rod 6, the first electric push rod 6 is fixedly arranged at the bottom of the processing chamber 2, a scraper 7 is movably arranged at the upper side of the metal plate 5, a partition plate 9 is fixedly arranged inside the scraper 7, powder troughs 8 are arranged at two sides of the partition plate 9, a discharging opening 10 is arranged at the front side of the scraper 7, a triangular scraper is fixedly arranged at the bottom of the front end of the scraper 7, the scraper 7 uniformly spreads metal powder on the upper surface of the metal plate 5, and the thickness of the metal powder is uniformly controlled by the discharging opening 10 and the triangular metal scraper at the bottom of one end of the scraper 7, the width value of the scraper 7 is consistent with the inner width value of the processing chamber 2, the width value of the scraper 7 is larger than the width value of the metal plate 5, the width value of the scraper 7 is consistent with the inner width value of the processing chamber 2 and is larger than the width value of the metal plate 5, so that the powder on the metal plate 5 is ensured to be fully covered, and the quality defect caused by partial omission is avoided, a second electric push rod 11 is fixedly installed on one side of the scraper 7, the other end of the second electric push rod 11 is fixedly installed on the inner wall of the other side of the device shell 1, a case 33 is fixedly installed on the top plate of the other side of the device shell 1, a discharging device 12 is movably installed on one side above the second electric push rod 11, the other end of the discharging device 12 is fixedly connected on a material pumping device 13, a feeding pipe 14 is fixedly connected on one side of the material pumping device 13, the other end of, the raw material box 15 is fixedly arranged at the bottom of the device shell 1, the discharging device 12, the material pumping device 13 and the feeding pipe 14 are feeding mechanisms of the device and are directly connected to the middle of the feeding end and the raw material box, so that the raw materials are timely conveyed, a roller 16 is movably arranged in the raw material box 15, one end of the roller 16, which is fixedly provided with a capillary 17, outside the roller 16 is fixedly provided with a belt pulley 18, the middle of the belt pulley 18 is movably provided with a belt 20, the other end of the belt pulley 18 is movably provided with a first motor 19, the roller 16 and the capillary 17 are equidistantly arranged at the bottom side in the raw material box 15, the capillary 17 is formed by a circle of metal fine needles which are arranged in a surrounding manner, the roller 16 and the capillary 17 are movably arranged in the raw material box 15, so that the metal powder in the raw material box 15 can be stirred through the rotation of the capillary 17, the dust using convenience is improved, a cover plate 21 is movably mounted on the upper portion of a raw material box 15, a connecting port 22 is formed in the upper portion of the cover plate 21, a powder feeding pipe 23 is movably mounted inside the connecting port 22, a first powder dropping port 25 and a second powder dropping port 26 are fixedly connected to the upper end of the powder feeding pipe 23, the first powder dropping port 25 and the second powder dropping port 26 are both arranged inside a powder receiving groove 27, the powder receiving groove 27 is arranged on the upper portion of the powder receiving plate 24, the powder receiving plate 24 is movably mounted below a metal plate 5, the powder receiving plate 24 is provided with the first powder dropping port 25, the second powder dropping port 26 and the powder receiving groove 27, redundant metal powder on the metal plate 5 can be conveniently recycled through the first powder dropping port 25, the second powder dropping port 26 and the powder receiving groove 27, waste of raw materials is avoided, a ball screw 28 is movably mounted inside the powder receiving groove 27, and the ball screw 28 is movably mounted through a bevel gear 31, the other end fixed mounting of bevel gear 31 has second motor 32, ball screw 28's middle part movable mounting scrapes piece 29, scrape the front end fixed mounting of piece 29 and scrape board 30, scraper 30 is the swallowtail form, there is ball screw 28 through the inside movable mounting who connects powder groove 27, and ball screw 28's middle part movable mounting scrapes piece 29 and scraper 30, be convenient for drive ball screw 28 through bevel gear 31 and second motor 32 and rotate, thereby it removes to drive to scrape piece 29 and scraper 30, be convenient for will connect powder groove 27 and connect the metal powder on powder plate 24 upper portion to clear up through scraping piece 29 and scraper 30, guarantee the recovery to the powder.

the first step is as follows: powder connection, gas connection and power connection among devices are combined and installed, then the power of the devices is communicated, a drawing of a target part is input into a control unit in the devices in advance, then metal powder is extracted from the interior of a raw material box 15 through a material extracting device 13 and a feeding pipe 14, the metal powder is placed in a scraping plate 7 through a discharging device 12, and the powder is uniformly distributed in a plurality of powder troughs 8 through partition plates 9 in the scraping plate 7;

the second step is that: then the scraper 7 enters the processing chamber 2 under the pushing of the second electric push rod 11, metal powder in the scraper 7 is sent to the upper surface of the metal plate 5 through the feed opening 10, in the process that the second electric push rod 11 pulls the scraper 7 to return, the metal scraper at the bottom side of one end of the scraper 7 can be used for scraping the powder to keep the thickness of the metal powder paved on the upper part of the metal plate 5 consistent, then the laser device 3 is used for carrying out laser sintering on the metal powder to sinter and form the metal powder, and then the steps are repeated until the metal processing is finished;

the third step: when the metal plate 5 is processed, redundant metal powder on the upper part of the metal plate 5 falls from the edge of the metal plate 5 and is intercepted on the upper parts of the powder receiving groove 27 and the powder receiving plate 24, then the scraping block 29 and the scraping plate 30 on the upper parts of the powder receiving groove 27 and the powder receiving plate 24 drive the ball screw 28 to rotate along with the bevel gear 31 and the second motor 32, the scraping block 29 and the scraping plate 30 are driven to clean the surfaces of the powder receiving groove 27 and the powder receiving plate 24, the metal powder is sent back to the inside of the raw material box 15 through the first powder falling port 25 and the second powder falling port 26, and the roller 16 and the hair pin 17 inside the raw material box 15 rotate under the drive of the first motor 19 and the belt 20, so that the metal powder inside the raw material box 15 is stirred, and the metal powder is prevented from being hardened.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a metal laser molding combined machining equipment, includes device shell (1), its characterized in that: the device comprises a device shell (1), a processing chamber (2) is arranged in the device shell (1), a slide rail (4) is movably arranged above the processing chamber (2), a laser device (3) is movably arranged in the middle of the slide rail (4), a metal plate (5) is movably arranged below the laser device (3), the bottom of the metal plate (5) is fixedly arranged on a first electric push rod (6), the first electric push rod (6) is fixedly arranged at the bottom of the processing chamber (2), a scraper (7) is movably arranged at the upper side of the metal plate (5), a second electric push rod (11) is fixedly arranged at one side of the scraper (7), the other end of the second electric push rod (11) is fixedly arranged on the inner wall of the other side of the device shell (1), a top plate is fixedly arranged at the other side of the device shell (1), a discharging device (12) is movably arranged at one side of the top of the second electric push rod (11), the other end fixed connection of discharging device (12) is on taking out material device (13), take out one side fixedly connected with inlet pipe (14) of material device (13), the other end fixed connection of inlet pipe (14) is in the inside of raw material tank (15), raw material tank (15) fixed mounting is in the bottom of device shell (1).

2. The metal laser molding compound processing device according to claim 1, characterized in that: the inside movable mounting of raw materials case (15) has roller bearing (16), the outside fixed mounting of roller bearing (16) has hair needle (17) the one end fixed mounting of roller bearing (16) has belt pulley (18), the middle part movable mounting of belt pulley (18) has belt (20), the other end movable mounting of belt pulley (18) has first motor (19).

3. The metal laser molding compound processing device according to claim 2, characterized in that: the upper portion movable mounting of former feed tank (15) has apron (21), connector (22) have been seted up on the upper portion of apron (21), the inside movable mounting of connector (22) has send powder pipe (23), send the first powder mouth (25) and the second of upper end fixedly connected with of powder pipe (23) to fall powder mouth (26), first powder mouth (25) and the second that fall powder mouth (26) are all seted up in the inside that connects powder groove (27), connect powder groove (27) to set up on the upper portion that connects powder board (24).

4. The metal laser molding compound processing device according to claim 3, characterized in that: connect the inside movable mounting of powder groove (27) to have ball screw (28), through bevel gear (31) movable mounting between ball screw (28), the other end fixed mounting of bevel gear (31) has second motor (32), the middle part movable mounting of ball screw (28) scrapes piece (29), the front end fixed mounting who scrapes piece (29) has scraper blade (30), scraper blade (30) are the swallow-tail form.

5. The metal laser molding compound processing device according to claim 1, characterized in that: the inside fixed mounting of scraper blade (7) has division board (9), powder groove (8) have been seted up to the both sides of division board (9), feed opening (10) have been seted up to the front side of scraper blade (7), the front end bottom fixed mounting of scraper blade (7) has triangle-shaped scraper blade.

6. The metal laser molding compound processing device according to claim 2, characterized in that: the roller (16) and the hair pins (17) are arranged on the inner bottom side of the raw material box (15) at equal intervals, and the hair pins (17) are formed by a circle of metal fine pins which are arranged in a surrounding mode.

7. The metal laser molding compound processing device according to claim 1, characterized in that: the width value of the scraper (7) is consistent with the width value of the interior of the processing chamber (2), and the width value of the scraper (7) is larger than that of the metal plate (5).