CN110125403B - Metal laser 3D printer - Google Patents
Metal laser 3D printer Download PDFInfo
- Publication number
- CN110125403B CN110125403B CN201910507774.6A CN201910507774A CN110125403B CN 110125403 B CN110125403 B CN 110125403B CN 201910507774 A CN201910507774 A CN 201910507774A CN 110125403 B CN110125403 B CN 110125403B
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- side plate
- printer
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/20—Direct sintering or melting
- B22F10/28—Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/70—Recycling
- B22F10/73—Recycling of powder
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
- B22F12/40—Radiation means
- B22F12/44—Radiation means characterised by the configuration of the radiation means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
- B22F12/40—Radiation means
- B22F12/49—Scanners
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
- B22F12/60—Planarisation devices; Compression devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
- B22F12/70—Gas flow means
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Abstract
The collimating lens group of the metal laser 3D printer disclosed by the invention can be movably arranged, focusing can be realized, the spot size of laser can be adjusted, the 3D printer has a focusing function, the spot size of laser can be adjusted according to a printed product, the product is not easy to damage, and the flexibility is high; furthermore, the 3D printer is provided with the leveling plates on the supporting cylinder body in a magnet mode, so that the leveling plates can be arranged in a balanced mode, unbalance phenomenon can not occur, powder spreading is uniform, and the printing quality of a product is not affected; in addition, retrieve the cylinder body and can dismantle the setting, be convenient for install and, and dismantle and install simply, convenient change and maintenance, the flexibility is good, can dismantle fast and retrieve the cylinder body in order to clear away remaining printing powder, has promoted user's experience greatly.
Description
Technical Field
The invention relates to the technical field of 3D printing, in particular to a metal laser 3D printer.
Background
With the development of 3D printing technology, the 3D printer can be used for directly manufacturing metal parts with metallurgical bonding, compact structure, good dimensional accuracy and good mechanical properties, has wide application prospect, and becomes a research hot spot in the field of additive manufacturing at present. The 3D printer prints the metal part and has the advantages of personalized design, rapid molding and short manufacturing period, and is very suitable for manufacturing metal parts with small batch, personalized and complex surfaces and internal structures.
Currently, the quality of products printed by 3D printers on the market is poor, mainly because: 1. the spot size of the laser remains unchanged, the flexibility is poor, and the phenomenon of damage can occur when different products are printed; 2. the leveling plate is unbalanced, so that powder is spread unevenly, and the printing quality is affected; 3. the cleaning of the residual printing powder of the recovery cylinder body is troublesome, and the experience of a user is greatly reduced.
Disclosure of Invention
The invention mainly solves the technical problem of providing the metal laser 3D printer, wherein the laser spot size is adjustable, the flexibility is high, the leveling plate can be arranged in a balanced manner, and the recovery cylinder body can be quickly disassembled to remove residual printing powder, so that the user experience is greatly improved.
In order to solve the technical problems, the invention adopts a technical scheme that: the utility model provides a metal laser 3D printer, including vibrating mirror, optic fibre output head and collimating lens group, it still includes: the adjusting box is arranged between the vibrating mirror and the optical fiber output head, the collimating lens group is accommodated in the adjusting box, a first sliding groove is formed in one side face of the adjusting box along a first direction, a first sliding block is slidably arranged in the first sliding groove along the first direction, and the first sliding block is fixedly connected with the collimating lens group so as to drive the collimating lens group to move along the first direction through the first sliding block; a support plate, wherein the support plate is provided with a first threaded hole; the cylinder is arranged below the supporting plate; the device comprises a sealing cavity top plate, a sealing cavity bottom plate, a sealing cavity front side plate, a sealing cavity rear side plate, a sealing cavity left side plate and a sealing cavity right side plate which are positioned above the supporting plate and form a sealing cavity, wherein a circular protective cover is arranged in the sealing cavity bottom plate, and a discharge hole for recycling printing powder is formed in the sealing cavity bottom plate; the piston rod is connected with the air cylinder and can be arranged in the protective cover in a telescopic way; the support cylinder body is circular and is arranged at one end of the piston rod, which is far away from the cylinder; the leveling plate is in a round shape and is arranged on one side surface of the supporting cylinder body, which is far away from the piston rod, wherein a first magnet is arranged on one side surface of the supporting cylinder body, which faces the leveling plate, and a second magnet connected with the first magnet is arranged on one side surface of the leveling plate, which faces the supporting cylinder body; the recycling cylinder body is arranged at the bottom of the sealing cavity bottom plate, the recycling cylinder body is provided with a containing cavity which is used for containing printing powder and corresponds to the discharge hole, a first threaded rod is rotatably arranged at the bottom of the recycling cylinder body, and the first threaded rod is in threaded connection with the first threaded hole.
Further, the vibrating mirror, the optical fiber output head and the collimating lens group are horizontally arranged along the first direction, and the length of the collimating lens group is smaller than that of the adjusting box.
Further, the adjusting box is rectangular, wherein the adjusting box comprises a mounting bottom plate, a top plate, a first side plate, a second side plate, a first fixing plate and a second fixing plate, wherein the first side plate and the second side plate are arranged at intervals, the mounting bottom plate and the top plate are arranged at intervals, the first fixing plate and the second fixing plate are arranged at intervals, the optical fiber output head is arranged on the first fixing plate, and the vibrating mirror is arranged on the second fixing plate.
Further, one of the first side plate and the second side plate is provided with the first chute along a first direction, wherein the length of the first chute is smaller than that of the one of the first side plate and the second side plate, and the distance value between the plane where the bottom of the collimating lens group is fixed with the first sliding block and the mounting bottom plate is larger than 0.
Further, a first groove which is circular is formed in one side face of the supporting cylinder body, which faces the leveling plate, the first magnet is circular and is contained in the first groove, a second groove which is circular is formed in one side face of the supporting cylinder body, which faces the leveling plate, the second magnet is circular and is contained in the second groove, the depth of the first groove is deeper than the thickness of the first magnet, the depth of the second groove is deeper than the thickness of the second magnet, and the inner diameter of the first groove is equal to the inner diameter of the second groove.
Further, one of a side surface of the supporting cylinder body facing the leveling plate and a side surface of the leveling plate facing the supporting cylinder body is provided with a positioning column, and the other one of a side surface of the supporting cylinder body facing the leveling plate and a side surface of the leveling plate facing the supporting cylinder body is provided with a positioning hole for accommodating the positioning column.
Further, the exhaust hole is semi-circular, the inner wall of the exhaust hole is inclined, the diameter of the top of the inner wall of the exhaust hole is larger than the diameter of the bottom of the inner wall of the exhaust hole, and the top of the recovery cylinder body is provided with a clamping edge which is semi-circular, wherein the diameter of the clamping edge is larger than the diameter of the bottom of the inner wall of the exhaust hole.
Further, a semicircular accommodating groove for accommodating the recovery cylinder body is formed in the bottom of the sealing cavity bottom plate, the diameter of the accommodating groove is equal to or slightly larger than that of the clamping edge, a first sealing gasket is arranged on the outer wall of the top end of the accommodating groove, a circular accommodating hole is formed in the bottom of the recovery cylinder body, one end of the first threaded rod is rotatably arranged in the accommodating hole, a first clamping portion is arranged at one end of the first threaded rod, which is accommodated in the accommodating hole, and a second clamping portion for clamping the first clamping portion is arranged at one end of the accommodating hole, which is far away from the sealing cavity bottom plate.
Further, the seal chamber front side board is equipped with first opening and with the first air vent that first opening interval set up, the seal chamber rear side board is equipped with the exhaust hole that is used for exhaust gas, and wherein this 3D printer still includes: the exhaust pipe body is arranged outside the sealing cavity, and one end of the exhaust pipe body is communicated with the exhaust hole; one end of the switch door is hinged to one side surface of the front side plate of the sealing cavity, which is far away from the rear side plate of the sealing cavity, and is used for sealing the first opening; the air inlet pipe body is arranged outside the sealing cavity, and one end of the air inlet pipe body is communicated with the first vent hole; the air inlet is arranged on one side face of the rear side plate of the sealing cavity, which faces the rear side plate of the sealing cavity, a first opening corresponding to the first vent hole is arranged on the other end of the opening and closing door, and an air inlet channel which enables the air inlet to be communicated with the first opening is arranged in the opening and closing door.
Further, the switch door is rectangular, a protruding part is arranged at the other end of the switch door in an extending mode, the first opening is formed in the protruding part, a handle above the first vent hole is arranged in the front side plate of the sealing cavity, the handle is rotatably arranged in the front side plate of the sealing cavity, the handle comprises a rotating rod rotatably arranged in the front side plate of the sealing cavity and a clamping rod fixedly arranged at one end, far away from the front side plate of the sealing cavity, of the rotating rod, and the clamping rod is perpendicular to the rotating rod, so that the clamping rod is driven to clamp the protruding part by rotating the rotating rod; the switch door is provided with a transparent window corresponding to the first opening, and a sealing gasket arranged outside the first opening is arranged on one side surface of the switch door facing the front side plate of the sealing cavity.
The beneficial effects of the invention are as follows: compared with the prior art, the collimating lens group of the metal laser 3D printer disclosed by the invention is movably arranged, can realize focusing, enables the spot size of laser to be adjustable, enables the 3D printer to have a focusing function, can adjust the spot size of laser according to printed products, enables the products not to be damaged easily, and has high flexibility; furthermore, the 3D printer is provided with the leveling plates on the supporting cylinder body in a magnet mode, so that the leveling plates can be arranged in a balanced mode, unbalance phenomenon can not occur, powder spreading is uniform, and the printing quality of a product is not affected; in addition, retrieve the cylinder body and can dismantle the setting, be convenient for install and, and dismantle and install simply, convenient change and maintenance, the flexibility is good, can dismantle fast and retrieve the cylinder body in order to clear away remaining printing powder, has promoted user's experience greatly.
Drawings
Fig. 1 is a schematic perspective view of a metal laser 3D printer according to the present invention;
FIG. 2 is a first partial schematic diagram of a metal laser 3D printer of the present invention;
FIG. 3 is a second partial schematic diagram of a metal laser 3D printer of the present invention;
FIG. 4 is a schematic view of a third partial structure of the metal laser 3D printer of the present invention;
FIG. 5 is a fourth partial schematic diagram of a metal laser 3D printer of the present invention;
FIG. 6 is a fifth partial schematic diagram of a metal laser 3D printer of the present invention;
FIG. 7 is a sixth partial schematic diagram of a metal laser 3D printer of the present invention;
FIG. 8 is an enlarged schematic view of the partial area B in FIG. 7;
FIG. 9 is a schematic diagram of the recovery cylinder of the metal laser 3D printer of the present invention;
fig. 10 is a schematic diagram of the structure of the opening and closing door of the metal laser 3D printer of the present invention.
Detailed Description
The present invention will be described in detail with reference to the drawings and embodiments.
As shown in fig. 1 to 10, the metal laser 3D printer includes a galvanometer 10, an optical fiber output head 12, a collimator lens group 11, a regulating box 13, a support plate 20, a cylinder 201, a seal chamber, a piston rod 202, a support cylinder 203, a leveling plate 204, and a recovery cylinder.
The vibrating mirror 10, the optical fiber output head 12, the collimating lens group 11 and the adjusting box 13 are all arranged above the sealing cavity. It should be appreciated that the laser light output by the galvanometer 10 is directed into the sealed cavity to effect printing.
In the present embodiment, the seal chamber includes a seal chamber top plate 22, a seal chamber bottom plate 21, a seal chamber front side plate, a seal chamber rear side plate, a seal chamber left side plate, and a seal chamber right side plate.
The collimator lens group 11 is disposed between the galvanometer 10 and the fiber output head 12. In the present embodiment, the galvanometer 10, the fiber output head 12, and the collimator lens group 11 are horizontally arranged in the first direction a so that laser light can be emitted in the first direction a. That is, the laser output holes of the optical fiber output head 12 are in one-to-one correspondence with the laser input holes of the collimating lens group 11, and the laser output holes of the collimating lens group 11 are in one-to-one correspondence with the laser input holes of the galvanometer 10.
In the present embodiment, the collimator lens group 12 is housed in the adjustment case 13. It should be understood that the collimator lens group 12 is accommodated in the adjustment box 13 such that the laser light emitted from the collimator lens group 12 can be blocked by the adjustment box 13 so as not to be exposed, thereby performing a sealing function.
In this embodiment, a first sliding groove 136 is disposed on a side surface of the adjustment box 13 along the first direction a, and a first sliding block 137 is slidably disposed in the first sliding groove 136 along the first direction a, where the first sliding block 137 is fixedly connected to the collimating lens group 11, so that the collimating lens group 11 is driven to move along the first direction a by the first sliding block 137. It should be understood that the galvanometer 10 and the optical fiber output head 12 are fixedly disposed, and the collimating lens group 11 can be driven by the first slider 137 to move along the first direction a in this embodiment, so that the collimating lens group 11 and the optical fiber output head 12 can be changed, and the effect of changing the focal length can be achieved, so that the spot size of the laser can be changed, so as to adjust the energy irradiated on the printing powder, and the flexibility is high, the quality of the printing product is effectively improved, and the user experience is greatly improved.
It should be understood that the first slider 137 of the present embodiment is provided with a sliding rod passing through the first sliding slot 136 and fixedly connected to the collimating lens group 11, that is, the sliding rod slides in the first sliding slot 136, and the first slider 137 is clamped outside the first sliding slot 136. It should be noted that the present embodiment may manually move the first slider 137 to enable the first slider 137 to slide in the first chute 136.
In this embodiment, the length of the collimating lens group 11 is smaller than the length of the adjusting case 13, so that a space is reserved in the adjusting case 13 for the collimating lens group 11 to move.
In the present embodiment, the adjustment box 13 has a rectangular shape, wherein the adjustment box 13 includes a mounting base plate 131, a top plate 132, a first side plate 133, a second side plate, a first fixing plate 134, and a second fixing plate 135, and the collimator lens group 11 is accommodated in an accommodating space formed by the mounting base plate 131, the top plate 132, the first side plate 133, the second side plate, the first fixing plate 134, and the second fixing plate 135.
Preferably, the first side plate 133 and the second side plate are disposed at a spacing, the mounting bottom plate 131 and the top plate 132 are disposed at a spacing, the first fixing plate 134 and the second fixing plate 135 are disposed at a spacing, and the optical fiber output head 12 is disposed on the first fixing plate 134, and the vibrating mirror 10 is disposed on the second fixing plate 135.
Preferably, the edge of the mounting base plate 131 is provided with a plurality of mounting holes at intervals.
In the present embodiment, one of the first side plate 133 and the second side plate is provided with the first chute 136 along the first direction a. Preferably, the length of the first chute 136 is less than the length of one of the first side plate 133 and the second side plate.
In the present embodiment, the first side plate 133 is provided with a first chute 136 along the first direction a. Preferably, the length of the first chute 136 is less than the length of the first side plate 133.
In the present embodiment, the distance value between the plane in which the bottom of the collimator lens group 11 is located when it is fixed to the first slider 137 and the mounting base 131 is greater than 0. That is, the bottom of the collimator lens group 11 is not in contact with the mounting base plate 131, so that the weight of the collimator lens group 11 is entirely applied to the first slider 137, so that the collimator lens group 11 can move following the first slider 137.
The support plate 20 is below the seal chamber, that is, the seal chamber floor 21 is above the support plate 20.
The cylinder 201 is disposed below the support plate 20. The piston rod 202 is connected with the cylinder 201 to drive the piston rod 202 to expand and contract through the cylinder 201. It will be appreciated that the support plate 20 is provided with a first through hole in which the piston rod 202 is threaded.
The support cylinder 203 has a circular shape, wherein the support cylinder 203 is disposed at an end of the piston rod 202 remote from the cylinder 201 such that the support cylinder 203 follows the piston rod 202.
In the present embodiment, a circular ring-shaped protection cover 211 is provided in the seal chamber bottom plate 21. It will be appreciated that the capsule floor 21 is provided with a second through hole in which one end of the protective cover 211 is threaded. That is, the piston rod 202 is telescopically disposed within the protective cover 211 such that the support cylinder 203 is telescopically moved within the protective cover 211.
Preferably, the protective cover 211 is located between the support plate 20 and the seal chamber bottom plate 21. Further, both ends of the protection cover 211 are opened, and the length of the protection cover 211 is equal to the distance between the support plate 20 and the seal cavity bottom plate 21. It will be appreciated that the support plate 20 and the seal chamber base plate 21 are spaced apart.
The leveling plate 204 has a circular shape, wherein the leveling plate 204 is disposed on a side of the support cylinder 203 away from the piston rod 202.
Preferably, the diameter of the support cylinder 203 is equal to the diameter of the leveling plate 204, and the diameter of the leveling plate 204 is equal to the inner diameter of the protective cover 211.
In the present embodiment, a side of the support cylinder 203 facing the leveling plate 204 is provided with a first magnet, and a side of the leveling plate 204 facing the support cylinder 203 is provided with a second magnet 2031 connected to the first magnet. It should be appreciated that the first magnet and the second magnet 2031 can be mutually attracted and connected, and the connection mode of the support cylinder 203 and the leveling plate 204 is that the magnets are mutually attracted and connected, so that the connection mode is not adopted any more, the phenomenon that the leveling plate is unbalanced due to the fact that the strength of the screw is difficult to control and the depth of the screw is installed on the support cylinder is avoided, the connection stress of the support cylinder 203 and the leveling plate 204 is balanced, the phenomenon that the leveling plate is unbalanced is avoided, the powder paving is even, the quality of a printed product is not affected, the installation and the disassembly are convenient, and the user experience is greatly improved.
In this embodiment, a side of the supporting cylinder 203 facing the leveling plate 204 is provided with a first annular groove, the first magnet is annular and is accommodated in the first groove, a side of the leveling plate 204 facing the supporting cylinder 203 is provided with a second annular groove, and the second magnet 2031 is annular and is accommodated in the second groove. It should be appreciated that the first magnet may be disposed within the first recess by adhesive means and the second magnet 2031 may be disposed within the second recess by adhesive means.
Preferably, the inner diameter of the first groove is equal to the inner diameter of the second groove. It should be appreciated that the outer diameter of the first groove is smaller than the outer diameter of the support cylinder 203. Further, since the first magnet and the second magnet 2031 are annular, the force between the first magnet and the second magnet 2031 is uniformly distributed, and the phenomenon of unbalanced stress does not occur.
Preferably, the depth of the first recess is deeper than the thickness of the first magnet, and the depth of the second recess is deeper than the thickness of the second magnet. It will be appreciated that both sides of the support cylinder 203 and the leveling plate 204 are smooth, so that the depth of the first groove is deeper than the thickness of the first magnet and the depth of the second groove is deeper than the thickness of the second magnet 2031 does not affect the smoothness of the sides of the support cylinder 203 and the leveling plate 204, so that the sides of the support cylinder 203 and the leveling plate 204 are disposed in balance.
In the present embodiment, one of a side of the support cylinder 203 facing the leveling plate 204 and a side of the leveling plate 204 facing the support cylinder 203 is provided with a positioning post 2032, and the other one of a side of the support cylinder 203 facing the leveling plate 204 and a side of the leveling plate 204 facing the support cylinder 203 is provided with a positioning hole for receiving the positioning post 2032. It should be appreciated that the positioning posts 2032 are caught by the positioning holes so that the leveling plate 204 can be stably disposed on the support cylinder 203.
Preferably, a positioning column 2032 is provided on a side of the leveling plate 204 facing the support cylinder 203, and a positioning hole for accommodating the positioning column 2032 is provided on a side of the support cylinder 203 facing the leveling plate 204. Of course, in other embodiments, a side of the support cylinder 203 facing the leveling plate 204 may be provided with a positioning post 2032, and a side of the leveling plate 204 facing the support cylinder 203 may be provided with a positioning hole for receiving the positioning post 2032.
It should be appreciated that in other embodiments, the other side of the leveling plate 204 remote from the support cylinder 203 is a fulcrum for supporting the printed product.
In the present embodiment, the support plate 20 is provided with a first screw hole 2001. Further, the seal chamber bottom plate 21 is provided with a discharge hole 2111 for recovering the printing powder.
In the present embodiment, the discharge hole 2111 has a semicircular shape. Preferably, the inner wall of the discharge hole 2111 is provided in an inclined manner, wherein the diameter of the top of the inner wall of the discharge hole 2111 is larger than the diameter of the bottom of the inner wall of the discharge hole 2111. It should be appreciated that the inner wall of the discharge hole 2111 is inclined so as to facilitate the sliding of the printing powder into the discharge hole 2111.
The recovery cylinder 212 is provided at the bottom of the seal chamber bottom plate 21. In the present embodiment, the recovery cylinder 212 is provided with a housing chamber 2122 for housing the printing powder and corresponding to the discharge hole 2111.
In the present embodiment, the bottom of the recovery cylinder 212 is rotatably provided with a first threaded rod 2121, wherein the first threaded rod 2121 is threadedly coupled within the first threaded hole 2001. It should be appreciated that, because the first threaded rod 2121 is rotatably disposed at the bottom of the recovery cylinder 212, and the first threaded rod 2121 is in threaded connection with the first threaded hole 2001, the recovery cylinder 212 can be driven to approach or depart from the discharge hole 2111 by rotating the first threaded rod 2121, i.e. the recovery cylinder 212 can be mounted at the bottom of the sealing cavity bottom plate 21 by rotating clockwise or counterclockwise, and the recovery cylinder 212 can be dismounted from the bottom of the sealing cavity bottom plate 21 by rotating counterclockwise or clockwise, so that the disassembly and the assembly are simple, the replacement and the maintenance are convenient, the flexibility is good, and the user experience is greatly improved.
In this embodiment, a circular receiving hole 2124 is formed in the bottom of the recovery cylinder 212, and one end of the first threaded rod 2121 is rotatably disposed in the receiving hole 2124.
Preferably, the first threaded rod 2121 is provided with a first clamping portion 2125 at one end of the accommodating hole 2124, and a second clamping portion 2126 for clamping the first clamping portion 2125 is provided at one end of the accommodating hole 2124 away from the sealing cavity bottom plate 21, so that the first threaded rod 2121 does not fall out of the accommodating hole 2124. It should be appreciated that the first clamping portion 2125 is disposed at an edge of the first threaded rod 2121, and the second clamping portion 2126 is disposed at an edge of the receiving hole 2124. Specifically, the first clamping portion 2125 has a semicircular shape, and the second clamping portion 2126 has a semicircular shape.
In the present embodiment, the top of the recovery cylinder 212 is provided with a catching edge 2123 having a semicircular shape, wherein the diameter of the catching edge 2123 is larger than the diameter of the bottom of the inner wall of the discharge hole 2111, so that the recovery cylinder 212 catches outside the discharge hole 2111.
In the present embodiment, the bottom of the seal chamber bottom plate 21 is provided with the receiving groove 213 which is semicircular in shape and is used for receiving the recovery cylinder 212, so that the recovery cylinder 212 can be stably disposed at the bottom of the seal chamber bottom plate 21, and is not easily affected by external force to move.
Preferably, the diameter of the receiving recess 213 is equal to or slightly greater than the diameter of the catch edge 2123.
In the present embodiment, the outer wall of the recovery cylinder 212, which is received at the top end of the receiving groove 213, is provided with the first sealing gasket 214, so that the sealing effect is good.
In this embodiment, the metal laser 3D printer further includes an exhaust pipe body, an opening and closing door 30, and an intake pipe body. It should be appreciated that this example uses 3D printing in a sealed chamber, and nitrogen is introduced into the sealed chamber for gas circulation during printing.
In the present embodiment, the seal chamber front side plate 23 is provided with a first opening and a first vent hole provided at a distance from the first opening.
The air inlet pipe body is arranged outside the sealing cavity, and one end of the air inlet pipe body is communicated with the first vent hole.
One end of the opening and closing door 30 is hinged on a side of the sealing chamber front side plate 23 away from the sealing chamber rear side plate for sealing the first opening.
In the present embodiment, the switch door 30 is provided with a transparent window 302 corresponding to the first opening, and the condition in the sealed cavity can be checked through the transparent window 302.
In the present embodiment, the opening and closing door 30 has a rectangular shape. Preferably, one end of the opening and closing door 30 is fixedly provided on a side of the seal chamber front side plate 23 remote from the seal chamber rear side plate by a hinge. Specifically, the upper leaf of the hinge is fixed to one end of the opening and closing door 30, and the lower leaf of the hinge is fixed to a side of the seal chamber front side plate 23 remote from the seal chamber rear side plate.
In this embodiment, a side surface of the switch door 30 facing the rear side plate of the sealing cavity is provided with an air inlet hole 304 for outputting air, wherein the other end of the switch door 30 is provided with a first opening 303 corresponding to the first air vent, and an air inlet channel for communicating the air inlet hole 304 with the first opening 303 is provided in the switch door 30, so that nitrogen is input into the air inlet channel through the air inlet pipe body, and is sprayed into the sealing cavity from the air inlet hole 304. It should be appreciated that when the switch door 30 is closed, the first aperture 303 and the first vent hole communicate, thus allowing nitrogen gas to enter the first aperture 303 from the first vent hole. In addition, when the opening and closing door 30 is closed, the air intake hole 304 is located in the first opening of the front side plate 23 of the sealing chamber, so that the nitrogen of the air intake hole 304 can completely enter the sealing chamber.
Notably, because the air inlet 304 is arranged in the switch door 30, and the switch door 30 is convenient to open, when the air inlet 304 is blocked by printing powder or the air inlet 304 needs to be cleaned or cleaned, a worker can open the switch door 30 to directly clean or clean the air inlet 304, so that the flexibility is good, and the user experience is greatly improved.
In the present embodiment, the other end of the opening and closing door 30 is extended with a protrusion 301, wherein the first opening 303 is provided in the protrusion 301. Preferably, the protrusion 301 has a rectangular shape.
In the present embodiment, a handle 31 above the first vent hole is provided in the seal chamber front side plate 23, wherein the handle 31 is rotatably provided in the seal chamber front side plate 23 to catch the protruding portion 301 by the handle 31.
Specifically, the handle 31 includes a rotating lever rotatably provided in the seal chamber front side plate 23 and a catching lever fixedly provided at an end of the rotating lever remote from the seal chamber front side plate 23, wherein the catching lever is provided perpendicularly to the rotating lever to drive the catching lever catching projection 301 by rotating the rotating lever. It should be understood that the rotating rod is vertically disposed on the seal chamber front side plate 23, and since the catching rod is vertically disposed with the rotating rod, the catching rod can be caught on the protruding portion 301 by rotating the rotating rod such that the catching rod is caught on the protruding portion 301. It is noted that the distance between the clamping rod and the front side plate 23 of the sealing cavity is equal to the thickness of the protruding portion 301, so that the clamping rod can stably clamp the protruding portion 301.
In the present embodiment, a side surface of the opening/closing door 30 facing the seal chamber front side plate 23 is provided with a gasket disposed outside the first opening. It will be appreciated that the gasket is provided at the edge of the transparent window, so that the sealing effect of the opening and closing door 30 with the sealing chamber front side plate 23 is better.
In this embodiment, the seal cavity rear side plate is provided with an exhaust hole for exhausting gas.
The exhaust pipe body is arranged outside the sealing cavity, wherein one end of the exhaust pipe body is communicated with the exhaust hole so as to exhaust nitrogen through the exhaust hole.
Further, the nitrogen gas circulation mechanism that this 3D printer was used still includes first body, first filtration jar, second body and second filtration jar.
The first pipe body is arranged outside the sealing cavity, and one end of the first pipe body is communicated with the exhaust pipe body. The first filter tank is arranged outside the sealing cavity, wherein an air inlet hole of the first filter tank is communicated with the other end of the first pipe body. It should be appreciated that the first filter tank is capable of filtering the printing powder such that the printing powder is collected within the first filter tank, while the filtered nitrogen gas is exhausted from the first filter tank. It should be noted that the first filter tank may be implemented by a filter tank in the prior art, and the principles thereof are not described herein. The second body sets up outside sealed chamber, and wherein the one end of second body and the venthole intercommunication of first filtration jar. The second filter tank is arranged outside the sealing cavity, wherein an air inlet hole of the second filter tank is communicated with the other end of the second pipe body, and an air outlet hole of the second filter tank is communicated with the other end of the air inlet pipe body. It should be understood that the second filter tank is capable of filtering the printing powder such that the printing powder is collected in the second filter tank, and the filtered nitrogen gas is discharged from the second filter tank and is again introduced into the sealed chamber through the air inlet pipe body. It should be noted that the second filter tank may be implemented by a filter tank in the prior art, and the principle thereof will not be described herein.
In summary, the collimating lens group of the novel metal laser 3D printer disclosed by the invention can be movably arranged, focusing can be realized, so that the size of a light spot of laser can be adjusted, the 3D printer has a focusing function, the size of the light spot of the laser can be adjusted according to a printed product, the product is not easy to damage, and the flexibility is high; furthermore, the 3D printer is provided with the leveling plates on the supporting cylinder body in a magnet mode, so that the leveling plates can be arranged in a balanced mode, unbalance phenomenon can not occur, powder spreading is uniform, and the printing quality of a product is not affected; in addition, retrieve the cylinder body and can dismantle the setting, be convenient for install and, and dismantle and install simply, convenient change and maintenance, the flexibility is good, can dismantle fast and retrieve the cylinder body in order to clear away remaining printing powder, has promoted user's experience greatly.
The foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present invention.
Claims (10)
1. Metal laser 3D printer, including vibrating mirror, optic fibre output head and collimating lens group, its characterized in that still includes:
the adjusting box is arranged between the vibrating mirror and the optical fiber output head, the collimating lens group is accommodated in the adjusting box, a first sliding groove is formed in one side face of the adjusting box along a first direction, a first sliding block is slidably arranged in the first sliding groove along the first direction, and the first sliding block is fixedly connected with the collimating lens group so as to drive the collimating lens group to move along the first direction through the first sliding block;
a support plate, wherein the support plate is provided with a first threaded hole;
the cylinder is arranged below the supporting plate;
the device comprises a sealing cavity top plate, a sealing cavity bottom plate, a sealing cavity front side plate, a sealing cavity rear side plate, a sealing cavity left side plate and a sealing cavity right side plate which are positioned above the supporting plate and form a sealing cavity, wherein a circular protective cover is arranged in the sealing cavity bottom plate, and a discharge hole for recycling printing powder is formed in the sealing cavity bottom plate;
the piston rod is connected with the air cylinder and can be arranged in the protective cover in a telescopic way;
the support cylinder body is circular and is arranged at one end of the piston rod, which is far away from the cylinder;
the leveling plate is in a round shape and is arranged on one side surface of the supporting cylinder body, which is far away from the piston rod, wherein a first magnet is arranged on one side surface of the supporting cylinder body, which faces the leveling plate, and a second magnet connected with the first magnet is arranged on one side surface of the leveling plate, which faces the supporting cylinder body;
the recycling cylinder body is arranged at the bottom of the sealing cavity bottom plate, the recycling cylinder body is provided with a containing cavity which is used for containing printing powder and corresponds to the discharge hole, a first threaded rod is rotatably arranged at the bottom of the recycling cylinder body, and the first threaded rod is in threaded connection with the first threaded hole.
2. The metal laser 3D printer of claim 1, wherein the galvanometer, the fiber output head, and the collimating lens group are horizontally disposed along a first direction, and a length of the collimating lens group is less than a length of the adjustment box.
3. The metal laser 3D printer of claim 2, wherein the adjustment box is rectangular, wherein the adjustment box includes a mounting plate, a top plate, a first side plate, a second side plate, a first fixing plate and a second fixing plate, the first side plate and the second side plate are disposed at intervals, the mounting plate and the top plate are disposed at intervals, the first fixing plate and the second fixing plate are disposed at intervals, the optical fiber output head is disposed on the first fixing plate, and the galvanometer is disposed on the second fixing plate.
4. The metal laser 3D printer according to claim 3, wherein one of the first side plate and the second side plate is provided with the first chute along a first direction, wherein a length of the first chute is smaller than a length of one of the first side plate and the second side plate, and a distance value of a plane in which a bottom of the collimating lens group is fixed with the first slider and the mounting base plate is larger than 0.
5. The metal laser 3D printer of claim 4, wherein a side of the support cylinder facing the leveling plate is provided with a first annular groove, the first magnet is annular and is accommodated in the first groove, a side of the leveling plate facing the support cylinder is provided with a second annular groove, the second magnet is annular and is accommodated in the second groove, the depth of the first groove is deeper than the thickness of the first magnet, the depth of the second groove is deeper than the thickness of the second magnet, and the inner diameter of the first groove is equal to the inner diameter of the second groove.
6. The metal laser 3D printer of claim 5, wherein one of a side of the support cylinder facing the leveling plate and a side of the leveling plate facing the support cylinder is provided with a positioning post, and the other one of a side of the support cylinder facing the leveling plate and a side of the leveling plate facing the support cylinder is provided with a positioning hole for receiving the positioning post.
7. The metal laser 3D printer of claim 6, wherein the discharge hole is in a semicircular shape, the inner wall of the discharge hole is obliquely arranged, the diameter of the top of the inner wall of the discharge hole is larger than the diameter of the bottom of the inner wall of the discharge hole, and the top of the recovery cylinder body is provided with a clamping edge in a semicircular shape, wherein the diameter of the clamping edge is larger than the diameter of the bottom of the inner wall of the discharge hole.
8. The metal laser 3D printer according to claim 7, wherein a semicircular accommodating groove for accommodating the recovery cylinder body is formed in the bottom of the sealing cavity bottom plate, the diameter of the accommodating groove is equal to or slightly larger than that of the clamping edge, a first sealing gasket is arranged on the outer wall of the top end of the accommodating groove, a circular accommodating hole is formed in the bottom of the recovery cylinder body, one end of the first threaded rod is rotatably arranged in the accommodating hole, a first clamping portion is arranged at one end of the first threaded rod, which is far away from the sealing cavity bottom plate, and a second clamping portion for clamping the first clamping portion is arranged at one end of the accommodating hole.
9. The metal laser 3D printer of claim 8, wherein the sealed cavity front side plate is provided with a first opening and a first vent hole spaced from the first opening, and the sealed cavity rear side plate is provided with a vent hole for exhausting gas, wherein the 3D printer further comprises:
the exhaust pipe body is arranged outside the sealing cavity, and one end of the exhaust pipe body is communicated with the exhaust hole;
one end of the switch door is hinged to one side surface of the front side plate of the sealing cavity, which is far away from the rear side plate of the sealing cavity, and is used for sealing the first opening;
the air inlet pipe body is arranged outside the sealing cavity, and one end of the air inlet pipe body is communicated with the first vent hole;
the air inlet is arranged on one side face of the rear side plate of the sealing cavity, which faces the rear side plate of the sealing cavity, a first opening corresponding to the first vent hole is arranged on the other end of the opening and closing door, and an air inlet channel which enables the air inlet to be communicated with the first opening is arranged in the opening and closing door.
10. The metal laser 3D printer according to claim 9, wherein the switch door is rectangular, a protruding portion is extended from the other end of the switch door, the first opening is arranged in the protruding portion, a handle above the first vent hole is arranged in the front side plate of the sealing cavity, the handle is rotatably arranged in the front side plate of the sealing cavity, the handle comprises a rotating rod rotatably arranged in the front side plate of the sealing cavity and a clamping rod fixedly arranged at one end of the rotating rod, which is far away from the front side plate of the sealing cavity, and the clamping rod is perpendicular to the rotating rod, so that the clamping rod is driven to clamp the protruding portion by rotating the rotating rod;
the switch door is provided with a transparent window corresponding to the first opening, and a sealing gasket arranged outside the first opening is arranged on one side surface of the switch door facing the front side plate of the sealing cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910507774.6A CN110125403B (en) | 2019-06-12 | 2019-06-12 | Metal laser 3D printer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910507774.6A CN110125403B (en) | 2019-06-12 | 2019-06-12 | Metal laser 3D printer |
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| CN110125403A CN110125403A (en) | 2019-08-16 |
| CN110125403B true CN110125403B (en) | 2023-10-13 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015165364A1 (en) * | 2014-04-30 | 2015-11-05 | 中国科学院化学研究所 | High polymer material ultraviolet laser 3d printing method and device for precise temperature control |
| CN207432803U (en) * | 2017-08-18 | 2018-06-01 | 佛山吗卡工程技术有限公司 | A kind of optical path adjusting component for laser 3D printing machine adjustable spot size |
| CN208084992U (en) * | 2018-03-23 | 2018-11-13 | 广州市谦鑫电子有限公司 | A kind of blowning installation of 3D printer |
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2019
- 2019-06-12 CN CN201910507774.6A patent/CN110125403B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015165364A1 (en) * | 2014-04-30 | 2015-11-05 | 中国科学院化学研究所 | High polymer material ultraviolet laser 3d printing method and device for precise temperature control |
| CN207432803U (en) * | 2017-08-18 | 2018-06-01 | 佛山吗卡工程技术有限公司 | A kind of optical path adjusting component for laser 3D printing machine adjustable spot size |
| CN208084992U (en) * | 2018-03-23 | 2018-11-13 | 广州市谦鑫电子有限公司 | A kind of blowning installation of 3D printer |
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| Title |
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| 石墨/酚醛树脂混合粉末选择性激光烧结成型工艺研究;吴海华;鄢俊能;李腾飞;肖林楠;彭建辉;;应用激光(02);全文 * |
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