CN113042739A

CN113042739A - Powder feeding device of metal 3D printer

Info

Publication number: CN113042739A
Application number: CN202110254190.XA
Authority: CN
Inventors: 汪勇; 余旺旺
Original assignee: Nanjing Vocational University of Industry Technology NUIT
Current assignee: Nanjing Vocational University of Industry Technology NUIT
Priority date: 2021-03-09
Filing date: 2021-03-09
Publication date: 2021-06-29

Abstract

The invention discloses a powder feeding device of a metal 3D printer, which comprises a processing box, a fixing mechanism, a grinding mechanism, a motor, a transmission mechanism, a screening component, a crushing component, a recovery component, a first funnel, a second funnel and a motor frame, wherein the motor is fixed in the middle of the top of the processing box through the motor frame, the top of the processing box is provided with a feeding port, the first funnel is arranged on the inner wall of the processing box and divides the processing box into an upper cavity and a lower cavity, the bottom of the processing box is funnel-shaped, the middle of the processing box is provided with a discharging port, and a powder brushing component is arranged in the upper cavity. Meanwhile, the invention can reprocess the unqualified large part of the raw material through the matching of the crushing assembly and the grinding mechanism, thereby improving the utilization rate of the raw material and reducing the cost, and can also ensure that the sent powder is qualified through the arrangement of the screening assembly and the recovery assembly, and the unqualified part can be put into the processing from the top feeding port.

Description

Powder feeding device of metal 3D printer

Technical Field

The invention relates to a powder feeding device of a metal 3D printer.

Background

3D printing (3DP), a technique of rapid prototyping, also called additive manufacturing, is a technique of constructing an object by using an adhesive material such as powdered metal or plastic and the like and by printing layer by layer based on a digital model file, and 3D printing is usually implemented by a digital technical material printer, and is often used to manufacture models in the fields of mold manufacturing, industrial design and the like, and then gradually used to directly manufacture some products, and there are already parts printed by using this technique.

Along with the improvement of scientific and technological, the range of application of metal 3D printer is more and more extensive, and print between the work, need put into the printer with the raw materials of processing, when putting into, need adopt powder feeding equipment to come the unloading, current powder feeding equipment is not convenient for install and dismantle, and directly send the powder into the printer, the unqualified lump head of raw materials is too big and have the fritting block a bit, the printer of being not convenient for carries out work, make printing quality descend, print efficiency also greatly reduced simultaneously.

Disclosure of Invention

The invention aims to provide a powder feeding device of a metal 3D printer, and aims to solve the problems that in the prior art, powder is directly fed into the printer by powder feeding equipment, unqualified raw materials can affect the printing quality and the printing efficiency, the powder feeding equipment is inconvenient to mount and dismount, and later maintenance is difficult.

The powder feeding device of the metal 3D printer comprises a processing box, a fixing mechanism, a grinding mechanism, a motor, a transmission mechanism, a screening component, a crushing component, a recovery component, a first funnel, a second funnel and a motor frame, wherein the motor is fixed in the middle of the top of the processing box through the motor frame, a feeding port is formed in the top of the processing box, the first funnel is arranged on the inner wall of the processing box and divides the processing box into an upper cavity and a lower cavity, the bottom of the processing box is funnel-shaped and is provided with a discharge port in the middle, a brushing component is arranged in the cavity at the upper side, the grinding mechanism and the screening component are both arranged in the cavity at the lower side, the output shaft of the motor drives the crushing component to work, the output shaft of the motor drives the screening component to work through the transmission mechanism, the grinding mechanism is arranged between the first funnel and the screening component, the fixing mechanism is arranged on the side wall of the processing box, the processing box is detachably fixed on the printer through the fixing mechanism, a recycling opening is formed in the side wall of the processing box, the recycling opening is located between the grinding mechanism and the screening component, and the recycling component is arranged on the side wall of one side of the recycling opening formed in the processing box.

Preferably, fixed establishment includes dead lever, fixed strip, splint and hand wheel, the dead lever runs through along the fore-and-aft direction handle the centre of case lateral wall, the both ends of dead lever all stretch out handle the outside of case, the both ends of dead lever are provided with reverse screw thread, two splint symmetry threaded connection is in both ends set up on the screwed part around the dead lever, two the fixed strip symmetry is fixed handle on the lateral wall of case front and back both sides, two splint respectively with two fixed strip sliding connection, the hand wheel is fixed the front end of dead lever.

Preferably, crushing unit includes crushing pole, crushing leaf, helical blade and crushing barrel, crushing barrel sets up the centre of a funnel bottom, crushing pole vertical rotation is connected the centre at treatment cabinet top and the top upwards stretch out with the output shaft coaxial fixed of motor, helical blade coaxial fastening is in the bottom of crushing pole, crushing barrel cover is in the helical blade outside, and is a plurality of crushing leaf evenly arranges the surface of crushing leaf.

Preferably, grinding unit includes grinding motor, grinding gear, grinding rod and grinding ball, grinding motor fixes on the lateral wall of processing case, two grinding rod parallel arrangement and all with the lateral wall of processing case rotates and is connected, two the one end of grinding rod is located the bottom opening part of crushing barrel, and the other end stretches out the outside of processing case, two grinding gear respectively with two grinding rod is located the coaxial fixed of the outside tip of processing case, two grinding gear engagement, one of them grinding rod with grinding motor's output shaft transmission is connected, two grinding ball is located two respectively grinding rod is located crushing barrel bottom open-ended tip, two grinding ball is located crushing barrel bottom open-ended both sides below.

Preferably, sieve material subassembly includes sieve flitch, sieve material axle, eccentric plate, sieve material spring and sieve material connecting block, sieve the material axle with the inner wall of handling the case rotates to be connected, and one end stretches out handle the case outside with the drive mechanism transmission is connected, and is a plurality of the eccentric plate cup joints to be fixed sieve material is epaxial, sieve the flitch is followed the inner wall of handling the case slides on vertical direction, and a plurality of symmetry sets up sieve material spring's bottom, and is a plurality of sieve material connecting block with sieve material spring corresponds the setting and fixes handle the inner wall of case, sieve material spring's bottom with correspond sieve material connecting block is connected.

Preferably, the transmission mechanism comprises a belt pulley set, a transmission rod and a bevel gear set, the transmission rod is vertically arranged on the outer side of the treatment box, the top end of the transmission rod is in transmission connection with the motor through the belt pulley set, and the bottom end of the transmission rod is in transmission connection with the screening shaft through the bevel gear set.

Preferably, the recovery subassembly includes foraminiferous box, retrieves shell and recovery tube, it fixes to retrieve the shell and set up on handling the lateral wall of case and being in retrieve mouthful department, the top of retrieving the shell is higher than retrieve the top of mouthful, foraminiferous box's bottom with all seted up a plurality of holes on the sieve flitch, foraminiferous box's top is provided with the opening, foraminiferous box is followed retrieve the shell inner wall and slide along vertical direction and its top opening with retrieve the bottom of mouthful flushes, the bottom of retrieving the shell is hopper-shaped and pass through the recovery tube with handle the funnel portion intercommunication of case bottom.

Preferably, the top of the perforated box is symmetrically provided with lifting lugs.

Preferably, the second hopper is arranged at the feeding port.

Preferably, one side of the sieve plate close to the recovery port is lower than one side of the sieve plate far away from the recovery port.

The invention has the advantages that: the device can be through crushing unit and grinding mechanism's cooperation, reprocess the big part of unqualified head of a block in the raw materials, the utilization ratio of raw materials is improved, therefore, the product cost is reduced, can also be through the setting of sieve material subassembly and recovery subassembly, the powder that makes the device see off is qualified quality, and can put into processing again from top pan feeding mouth with unqualified part, reduce the probability that the unqualified powder of seeing off of the device influences printer work, the utilization ratio of raw materials has also been improved simultaneously, the device can also pass through drive mechanism's setting, make the motor drive crushing unit and sieve material subassembly work simultaneously, reduce the device's weight, it is fixed more stable, can also pass through fixed establishment's setting, make the device convenient to detach maintain.

Drawings

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

FIG. 2 is a schematic view of the backside of the present invention;

FIG. 3 is a schematic view of the inside of the treatment tank of the present invention;

FIG. 4 is a schematic view of the screening assembly of the present invention;

FIG. 5 is a schematic view of the shredder assembly of the present invention;

FIG. 6 is a schematic view of the grinding mechanism of the present invention;

FIG. 7 is a schematic structural view of a fixing mechanism of the present invention;

FIG. 8 is a schematic view of the recycling assembly of the present invention.

The labels in the figures are: 1. processing box, 21, grinding motor, 22, grinding gear, 23, grinding rod, 24, grinding ball, 31, fixing rod, 32, fixing strip, 33, clamping plate, 34, hand wheel, 4, motor, 51, belt wheel set, 52, transmission rod, 53, bevel gear set, 61, screening plate, 62, screening shaft, 63, eccentric plate, 64, screening spring, 65, screening connecting block, 71, grinding rod, 72, grinding leaf, 73, helical blade, 74, grinding cylinder, 81, perforated box, 82, recovery shell, 83, recovery pipe, 9, funnel I, 10, funnel II, 11, motor frame, 12 and recovery port.

Detailed Description

The following detailed description of the embodiments of the present invention will be given in order to provide those skilled in the art with a more complete, accurate and thorough understanding of the inventive concept and technical solutions of the present invention.

As shown in figures 1-8, the invention provides a metal 3D printer powder feeding device, which comprises a processing box 1, a fixing mechanism, a grinding mechanism, a motor 4, a transmission mechanism, a screening component, a crushing component, a recovery component, a first funnel 9, a second funnel 10 and a motor frame 11, wherein the motor 4 is fixed in the middle of the top of the processing box 1 through the motor frame 11, the top of the processing box 1 is provided with a feeding port, the first funnel 9 is arranged on the inner wall of the processing box 1 and divides the processing box 1 into an upper chamber and a lower chamber, the bottom of the processing box 1 is funnel-shaped, the middle of the processing box 1 is provided with a discharging port, a powder brush component is arranged in the upper chamber, the grinding mechanism and the screening component are both arranged in the lower chamber, an output shaft of the motor 4 drives the crushing component to work, an output shaft of the motor 4 drives the screening component to work through the transmission mechanism, the grinding mechanism is, the fixing mechanism is arranged on the side wall of the processing box 1, the processing box 1 is detachably fixed on the printer through the fixing mechanism, the side wall of the processing box 1 is provided with a recovery port 12, the recovery port 12 is positioned between the grinding mechanism and the screening material assembly, and the recovery assembly is arranged on the side wall of the processing box 1 on one side of the recovery port 12.

Fixed establishment includes dead lever 31, the fixed strip 32, splint 33 and hand wheel 34, dead lever 31 runs through the centre of handling 1 lateral wall of case along the fore-and-aft direction, the both ends of dead lever 31 all stretch out in the outside of handling 1 case, the both ends of dead lever 31 are provided with reverse screw thread, two splint 33 symmetry threaded connection sets up on the screwed part at both ends around dead lever 31, two fixed strip 32 symmetries are fixed on the lateral wall of handling 1 both sides around the case, two splint 33 respectively with two fixed strip 32 sliding connection, the front end at dead lever 31 is fixed to hand wheel 34.

Crushing unit includes crushing pole 71, crushing leaf 72, helical blade 73 and crushing barrel 74, and crushing barrel 74 sets up in the centre of 9 bottoms on the funnel, and crushing pole 71 vertical rotation is connected in the centre of handling the case 1 top and the top upwards stretches out with the output shaft coaxial fixed of motor 4, and helical blade 73 is coaxial to be fixed in the bottom of crushing pole 71, and crushing barrel 74 cover is in the helical blade 73 outside, and a plurality of crushing leaves 72 evenly arrange on the surface of crushing leaf 72.

The grinding assembly comprises a grinding motor 21, grinding gears 22, grinding rods 23 and grinding balls 24, the grinding motor 21 is fixed on the outer side wall of the processing box 1, the two grinding rods 23 are arranged in parallel and are rotatably connected with the side wall of the processing box 1, one ends of the two grinding rods 23 are located at the bottom opening of the grinding cylinder 74, the other ends of the two grinding rods 23 extend out of the processing box 1, the two grinding gears 22 are coaxially fixed with the end portions, located outside the processing box 1, of the two grinding rods 23 respectively, the two grinding gears 22 are meshed, one grinding rod 23 is in transmission connection with an output shaft of the grinding motor 21, the two grinding balls 24 are located at the end portions, located at the bottom opening of the grinding cylinder 74, of the two grinding balls 24 are located on two sides below the bottom opening of the grinding.

The sieve material subassembly includes sieve flitch 61, sieve material axle 62, the eccentric plate 63, sieve material spring 64, and sieve material connecting block 65, sieve material axle 62 rotates with the inner wall of handling case 1 to be connected, and one end is stretched out and is connected with the drive mechanism transmission to handle case 1 outside, a plurality of eccentric plates 63 cup joint and fix on sieve material axle 62, sieve material board 61 slides on vertical direction along the inner wall of handling case 1, the sieve material spring 64 setting that a plurality of symmetries set up is in the bottom of sieve material spring 64, a plurality of sieve material connecting blocks 65 correspond the setting with sieve material spring 64 and fix the inner wall at handling case 1, sieve material spring 64's bottom and the sieve material connecting block 65 who corresponds are connected.

The transmission mechanism comprises a belt pulley set 51, a transmission rod 52 and a bevel gear set 53, the transmission rod 52 is vertically arranged on the outer side of the treatment box 1, the top end of the transmission rod 52 is in transmission connection with the motor 4 through the belt pulley set 51, and the bottom end of the transmission rod 52 is in transmission connection with the screening shaft 62 through the bevel gear set 53.

The recovery assembly comprises a perforated box 81, a recovery shell 82 and a recovery pipe 83, the recovery shell 82 is fixed on the side wall of the treatment box 1 and is arranged at the position of a recovery port 12, the top of the recovery shell 82 is higher than the top of the recovery port 12, a plurality of holes are formed in the bottom of the perforated box 81 and the sieve plate 61, the top of the perforated box 81 is provided with an opening, the perforated box 81 slides along the inner wall of the recovery shell 82 along the vertical direction and the top opening of the perforated box is flush with the bottom of the recovery port 12, the bottom of the recovery shell 82 is funnel-shaped and is communicated with the funnel part at the bottom of the treatment box 1 through the recovery pipe 83.

The top of the perforated box 81 is symmetrically provided with lifting lugs 84.

The second funnel 10 is arranged at the feeding port.

The side of the sieve plate 61 close to the recovery port 12 is lower than the side far away from the recovery port 12.

When the device is needed, firstly, the fixed rod 31 is rotated by the hand wheel 34, the clamping plates 33 on the two sides are moved to the two sides by the reverse threads on the two sides of the fixed rod 31 to be separated, then the device is aligned with the installation position and placed, then the hand wheel 34 is rotated reversely to enable the clamping plates 33 to clamp the printer to fix the device, then the motor 4 is turned on, the motor 4 drives the crushing rod 71 to rotate, the crushing rod 71 drives the crushing leaves 72 and the helical blades 73 to rotate, meanwhile, the motor 4 drives the screening shaft 62 to rotate by the transmission mechanism, the screening shaft 62 drives the eccentric plate 63 and the screening spring 64 to drive the screening plate 61 to repeatedly move along the vertical direction by driving the eccentric plate 63 to rotate, meanwhile, the grinding motor 21 is turned on, the grinding motor 21 drives the two grinding rods 23 to reversely rotate by the grinding gear 22, the two grinding rods 23 respectively drive the two grinding balls 24 to reversely rotate, then the raw materials are poured into a cavity above the first funnel, the unqualified raw materials with larger lumps in the raw materials are firstly crushed by the crushing blade 72, then fall into the crushing cylinder 74 and are pushed downwards by the helical blade 73 to be contacted with the two grinding balls 24 rotating in opposite directions, most of the raw materials with larger lumps are ground into qualified sizes and fall onto the material screening plate 61, wherein, part of unqualified materials also fall onto the screen plate 61, at this time, the screen plate 61 which is driven by the eccentric plate 63 and the screen spring 64 and moves repeatedly along the vertical direction sends the qualified materials out of the device through the holes on the screen plate 61, the still unqualified materials are vibrated out from the recovery port 12 into the perforated box 81 in the recovery shell 82 due to the inclined arrangement of the screen plate 61, then the powder on the surface of the unqualified raw material is shaken off into the recovery pipe 83 by the opening at the bottom of the box 81 with holes, then, the powder in the recovery pipe 83 is vibrated by the vibration of the apparatus itself to be sent out of the apparatus to the outlet of the processing box 1.

The device can be through the cooperation of crushing unit and grinding mechanism, reprocess the big part of unqualified head of a block in the raw materials, the utilization ratio of raw materials is improved, therefore, the product cost is reduced, can also be through the setting of sieve material subassembly and recovery subassembly, the powder that makes the device see off is qualified quality, and can put into processing again from top pan feeding mouth with unqualified part, reduce the probability that the unqualified powder of seeing off of the device influences printer work, the utilization ratio of raw materials has also been improved simultaneously, the device can also pass through drive mechanism's setting, make motor 4 drive crushing unit and sieve material subassembly work simultaneously, reduce the weight of the device, it is fixed more stable, can also pass through fixed establishment's setting, make the device convenient to detach maintain.

The invention is described above with reference to the accompanying drawings, it is obvious that the specific implementation of the invention is not limited by the above-mentioned manner, and it is within the scope of the invention to adopt various insubstantial modifications of the inventive concept and solution of the invention, or to apply the inventive concept and solution directly to other applications without modification.

Claims

1. The utility model provides a metal 3D printer powder feeding device which characterized in that: comprises a processing box (1), a fixing mechanism, a grinding mechanism, a motor (4), a transmission mechanism, a screening component, a crushing component, a recovery component, a first funnel (9), a second funnel (10) and a motor frame (11), wherein the motor (4) is fixed in the middle of the top of the processing box (1) through the motor frame (11), a feeding port is formed in the top of the processing box (1), the first funnel (9) is arranged on the inner wall of the processing box (1) and divides the processing box (1) into an upper chamber and a lower chamber, the bottom of the processing box (1) is funnel-shaped and is provided with a discharging port in the middle, a painting component is arranged in the upper chamber, the grinding mechanism and the screening component on the lower side are arranged in the chambers, the crushing component is driven to work by an output shaft of the motor (4), the output shaft of the motor (4) drives the screening component to work through the transmission mechanism, grind mechanism and set up funnel (9) with between the sieve material subassembly, fixed establishment sets up on the lateral wall of handling case (1), it passes through to handle case (1) fixed establishment can dismantle on the printer, the lateral wall of handling case (1) has been seted up and has been retrieved mouthful (12), it is located to retrieve mouthful (12) grind the mechanism with between the sieve material subassembly, it sets up to retrieve the subassembly handle case (1) is seted up retrieve on the lateral wall of mouthful (12) one side.

2. The metal 3D printer powder feeding device of claim 1, wherein: fixed establishment includes dead lever (31), fixed strip (32), splint (33) and hand wheel (34), dead lever (31) are run through along the fore-and-aft direction handle the centre of case (1) lateral wall, the both ends of dead lever (31) are all stretched out handle the outside of case (1), the both ends of dead lever (31) are provided with reverse screw thread, two splint (33) symmetry threaded connection is in on both ends set up the screwed part around dead lever (31), two fixed strip (32) symmetry is fixed handle on the lateral wall of case (1) front and back both sides, two splint (33) respectively with two fixed strip (32) sliding connection, hand wheel (34) are fixed the front end of dead lever (31).

3. The metal 3D printer powder feeding device of claim 1, wherein: crushing unit includes crushing pole (71), crushing leaf (72), helical blade (73) and crushing barrel (74), crushing barrel (74) set up the centre of funnel (9) bottom, crushing pole (71) vertical rotation is connected handle the centre at case (1) top and the top upwards stretch out with the output shaft coaxial fixed of motor (4), helical blade (73) coaxial fixation is in the bottom of crushing pole (71), crushing barrel (74) cover helical blade (73) outside, it is a plurality of crushing leaf (72) evenly arrange the surface of crushing leaf (72).

4. The metal 3D printer powder feeding device of claim 3, wherein: the grinding assembly comprises a grinding motor (21), grinding gears (22), grinding rods (23) and grinding balls (24), the grinding motor (21) is fixed on the outer side wall of the treatment box (1), the two grinding rods (23) are arranged in parallel and are rotatably connected with the side wall of the treatment box (1), one end of each of the two grinding rods (23) is located at the bottom opening of the crushing cylinder (74), the other end of each of the two grinding rods (23) extends out of the treatment box (1), the two grinding gears (22) are coaxially fixed with the end portions, located outside the treatment box (1), of the two grinding rods (23) respectively, the two grinding gears (22) are meshed, one of the grinding rods (23) is in transmission connection with an output shaft of the grinding motor (21), and the two grinding balls (24) are located at the end portions, located at the bottom openings of the crushing cylinder (74), of the two grinding rods (23) respectively, the two grinding balls (24) are positioned on two sides below the bottom opening of the crushing cylinder (74).

5. The metal 3D printer powder feeding device of claim 1, wherein: the screening component comprises a screening plate (61), a screening shaft (62), an eccentric plate (63), a screening spring (64) and a screening connecting block (65), the screening shaft (62) is rotatably connected with the inner wall of the treatment box (1), one end of the eccentric plate extends out of the treatment box (1) to be connected with the transmission mechanism in a transmission way, a plurality of eccentric plates (63) are sleeved and fixed on the screening shaft (62), the material screening plate (61) slides in the vertical direction along the inner wall of the treatment box (1), a plurality of symmetrically arranged material screening springs (64) are arranged at the bottoms of the material screening springs (64), a plurality of material screening connecting blocks (65) are arranged corresponding to the material screening springs (64) and fixed on the inner wall of the treatment box (1), the bottom of the screening spring (64) is connected with the corresponding screening connecting block (65).

6. The metal 3D printer powder feeding device of claim 5, wherein: the transmission mechanism comprises a belt pulley set (51), a transmission rod (52) and a bevel gear set (53), the transmission rod (52) is vertically arranged on the outer side of the treatment box (1), the top end of the transmission rod (52) is in transmission connection with the motor (4) through the belt pulley set (51), and the bottom end of the transmission rod (52) is in transmission connection with the screening shaft (62) through the bevel gear set (53).

7. The metal 3D printer powder feeding device of claim 5, wherein: the recycling assembly comprises a perforated box (81), a recycling shell (82) and a recycling pipe (83), the recycling shell (82) is fixed on the side wall of the processing box (1) and is arranged at the recycling port (12), the top of the recycling shell (82) is higher than the top of the recycling port (12), a plurality of holes are formed in the bottom of the perforated box (81) and the sieving plate (61), an opening is formed in the top of the perforated box (81), the perforated box (81) slides along the inner wall of the recycling shell (82) along the vertical direction, the top opening of the perforated box is flush with the bottom of the recycling port (12), and the bottom of the recycling shell (82) is funnel-shaped and is communicated with the funnel part at the bottom of the processing box (1) through the recycling pipe (83).

8. The metal 3D printer powder feeding device of claim 7, wherein: lifting lugs (84) are symmetrically arranged at the top of the box with holes (81).

9. The metal 3D printer powder feeding device of claim 1, wherein: the second hopper (10) is arranged at the feeding port.

10. The metal 3D printer powder feeding device of claim 5, wherein: one side of the screening plate (61) close to the recovery opening (12) is lower than one side far away from the recovery opening (12).