CN115214130A - Automatic sand blasting unit of 3D printing part multistation - Google Patents
Automatic sand blasting unit of 3D printing part multistation Download PDFInfo
- Publication number
- CN115214130A CN115214130A CN202210847633.0A CN202210847633A CN115214130A CN 115214130 A CN115214130 A CN 115214130A CN 202210847633 A CN202210847633 A CN 202210847633A CN 115214130 A CN115214130 A CN 115214130A
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- nozzle
- turntable
- small
- sand blasting
- belt
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- 238000005488 sandblasting Methods 0.000 title claims abstract description 71
- 238000010146 3D printing Methods 0.000 title claims description 16
- 239000004576 sand Substances 0.000 claims abstract description 52
- 238000003860 storage Methods 0.000 claims abstract description 23
- 230000007246 mechanism Effects 0.000 claims abstract description 13
- 239000000428 dust Substances 0.000 claims description 40
- 238000005096 rolling process Methods 0.000 claims description 12
- 230000001360 synchronised effect Effects 0.000 claims description 7
- 238000005422 blasting Methods 0.000 claims description 5
- 238000007639 printing Methods 0.000 claims description 3
- 239000012780 transparent material Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 24
- 238000000034 method Methods 0.000 abstract description 17
- 230000008569 process Effects 0.000 abstract description 16
- 238000007599 discharging Methods 0.000 abstract description 2
- 238000011084 recovery Methods 0.000 abstract description 2
- 125000004122 cyclic group Chemical group 0.000 abstract 1
- 230000005540 biological transmission Effects 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004630 mental health Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
- B29C64/205—Means for applying layers
- B29C64/209—Heads; Nozzles
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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
-
- 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
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Optics & Photonics (AREA)
Abstract
The invention discloses a multi-station automatic sand blasting device for 3D printed parts, which comprises a case and a sand storage and collection hopper, wherein the sand storage and collection hopper is provided with a collection hopper discharge pipe; a large rotating disc and a sand blasting assembly are arranged in the case, and a plurality of small rotating discs are arranged on the large rotating disc; the sand blasting assembly comprises a pneumatic system input pipeline and a plurality of high-pressure gas branch pipes connected with the pneumatic system input pipeline, the high-pressure gas branch pipes are respectively connected with nozzles, the nozzles are also connected with sand material pipes, and the sand material pipes are connected with a material discharging pipe of a collecting hopper; the machine case is provided with a nozzle driving shaft and a nozzle driven shaft for fixing the nozzle, and the nozzle driving shaft and the nozzle driven shaft are also provided with nozzle swing mechanisms. The large rotating disc is provided with the small rotating discs, so that multi-station processing can be realized, the small rotating discs can rotate at a constant speed, and the sand blasting of parts is more uniform; the sand material that is not utilized in the whole sand blasting process will drop to storing up the sand collecting hopper in, realize the recovery cyclic utilization of sand material.
Description
Technical Field
The invention relates to the technical field of 3D printing, in particular to a multi-station automatic sand blasting device for 3D printed parts.
Background
Along with the requirements of people on product individuation and function integration, more and more parts have the characteristics of small size, multiple types and short manufacturing period. The 3D printing technology can well meet the requirements. After forming the 3D part, it is often necessary to further the appearance of the workpiece, such as strength treatment, burr treatment, fatigue resistance treatment, and beautification treatment of the workpiece surface. The sand blasting technology is used as a surface treatment technology, has certain advantages for the processing of the parts, and solves a series of problems that the surfaces of complex parts are difficult to process.
However, the sand blasting process for 3D printing parts basically adopts a traditional manual or semi-automatic sand blasting mode, the sand blasting quality completely depends on the experience of workers, and the sand blasting distance cannot be controlled when the objects are manually held for sand blasting, so that the sand blasting on the surfaces of the parts is uneven, and the quality cannot be guaranteed. Moreover, the existing sand blasting mode only can process one printed part at a time, so that the time and the labor are consumed, the efficiency is lower, and the cost is high; the aforementioned problems are the problems that need to be solved urgently in the current sandblasting industry.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides an automatic sand blasting device suitable for 3D printing parts, which is used for solving the problems of uneven sand blasting quality, high labor intensity and high cost of the surface of the existing 3D printing parts; and the problem that the existing sand blasting mode can only process one printed part at a time and has low sand blasting efficiency.
In order to achieve the purpose of the invention, the technical scheme adopted by the invention is as follows: the sand storage and collection device comprises a case, wherein a sand storage and collection hopper is arranged at the bottom of the case, and a collection hopper discharge pipe is arranged at the bottom of the sand storage and collection hopper; a large rotary table and a sand blasting assembly are arranged in the case, the sand blasting assembly is connected with an air compressor, and a plurality of small rotary tables for placing printing parts are arranged on the large rotary table; the sand blasting assembly comprises a pneumatic system input pipeline and a plurality of high-pressure gas branch pipes connected with the pneumatic system input pipeline, the high-pressure gas branch pipes are respectively connected with nozzles, the nozzles are also connected with sand material pipes, and the sand material pipes are connected with a material discharging pipe of a collecting hopper; the machine case is provided with a nozzle driving shaft and a nozzle driven shaft, a plurality of nozzles are fixed on the nozzle driving shaft and the nozzle driven shaft, and the nozzle driving shaft and the nozzle driven shaft are also provided with nozzle swinging mechanisms; the nozzle swing mechanism drives a plurality of nozzles on the nozzle driving shaft and the nozzle driven shaft to swing up and down.
Furthermore, the nozzle swing mechanism comprises a swing motor, a motor crank arranged at the output end of the swing motor, and a motor output connecting rod, a driving shaft input connecting rod, a driving shaft fixed connecting rod, a driven shaft input connecting rod and a driven shaft fixed connecting rod which are connected in sequence; the motor output connecting rod is connected with the motor crank; the driving shaft input connecting rod and the driving shaft fixing connecting rod are fixed on the nozzle driving shaft, and the driven shaft fixing connecting rod is fixed on the driven shaft input connecting rod.
Furthermore, the outer part of the nozzle is hinged with an installation rod, and the installation rod is fixed on the nozzle driving shaft and the nozzle driven shaft through a clamping piece; the clamping piece is provided with a through hole for fixing the mounting rod and a mounting opening for mounting the nozzle driving shaft, fastening screws are arranged on two sides of the mounting opening in a penetrating mode, and fastening threads are arranged on one side, close to the small ends of the fastening screws, of the mounting opening.
Furthermore, the large rotary table is also connected with a large rotary table driving device, and the large rotary table driving device comprises a large rotary table driving shaft fixed above the large rotary table and a large rotary table motor for driving the large rotary table driving shaft; the lower extreme of rotatory carousel is fixed with the bottom carousel, and the bottom carousel is connected with the bottom carousel pivot, and the outside of bottom carousel pivot is provided with the carousel fixing base, still is provided with two antifriction bearings between carousel fixing base and the bottom carousel pivot, and two antifriction bearings are located the upper and lower side of carousel fixing base respectively, and the outside that is located the antifriction bearing of upside still is provided with the antifriction bearing cover, and antifriction bearing cover passes through bolted connection with the carousel fixing base.
Furthermore, the small turntable comprises a small turntable disc surface, a small turntable rotating shaft connected with the small turntable disc surface and a sleeve arranged outside the small turntable rotating shaft, wherein rolling bearings are arranged at the upper end and the lower end of the sleeve, and a countersunk hole for mounting the rolling bearings is formed in the sleeve; the rotary turntable is correspondingly provided with a through hole for installing the sleeve.
Furthermore, the small turntables are also connected with small turntable driving devices, and each small turntable driving device comprises a belt driving wheel, a small turntable driving shaft connected with the belt driving wheel, a small turntable motor connected with the small turntable driving shaft, a plurality of belt driven wheels and a belt connecting the belt driving wheel and the belt driven wheels; the belt driving wheel, the belt driven wheel and the small rotating disc driven wheel are synchronous wheels, and the belt is a double-sided tooth synchronous belt.
Furthermore, the belt driving wheel is provided with one position, the belt driven wheel is provided with three positions, the small turntables are uniformly distributed with six positions, the belt driving wheel and the belt driven wheel enable the belt to be in a concave shape, and the groove of the belt is meshed with the three small turntables driven wheel.
Furthermore, a dust removal pipe is connected to the case, the dust removal pipe is connected to a dust removal box, and the dust removal box is connected to a dust removal fan; the dust removal pipe sets up the top at quick-witted case, and the dust removal case is connected with dust exhausting fan and fixes in storage sand collecting hopper below.
Furthermore, a cabinet door is arranged on the cabinet, the cabinet is provided with an opening for installing the cabinet door, the cabinet door is hinged on the installation opening, and the cabinet door is made of transparent materials; a leakage net is arranged between the case and the sand storage and collection hopper and is positioned below the rotary large turntable; the bottom of the case is provided with a frame; and a pneumatic valve is arranged on the input pipeline of the pneumatic system.
Furthermore, the high-pressure air branch pipe is also connected with an external movable air gun.
The invention has the beneficial effects that:
1. the workpiece sand blasting process is realized by adopting a rotary table rotating mode, the workpiece is placed on a small rotary table station, then a large rotary table rotates to drive the small rotary table to move to a sand blasting processing station, the small rotary table starts to drive the part to rotate after the workpiece reaches the processing station, and then the spray gun performs sand blasting processing on the workpiece in an up-and-down swinging mode. The automatic sand blasting machine can save time and labor on the premise of ensuring the sand blasting quality, can reduce the labor intensity of workers, and can realize the automatic sand blasting of small-sized and multi-variety parts with high quality, high efficiency, low cost, environmental protection and environmental protection. The power generated by an air compressor is transmitted to a sand blasting assembly through a pneumatic system input pipeline, negative pressure is formed in a nozzle, sand materials are sucked into the nozzle from a sand storage and collection hopper through a sand material pipe, the compressed air and the sand materials are mixed into high-speed jet flow in the nozzle and are sprayed to the surface of a workpiece to be processed, which is conveyed to a processing station by a large rotating disc, through the nozzle swinging up and down, at the moment, the small rotating disc on the large rotating disc starts to rotate to enable all surfaces of the workpiece to be processed, a plurality of small rotating discs are arranged on the large rotating disc, the small rotating discs can also realize uniform rotation under the driving of the large rotating disc, so that the uniformity of sand blasting of parts on the small rotating disc is ensured, when one part is processed by sand blasting, the large rotating disc starts to convey the next workpiece, the sand materials which are not utilized in the whole sand blasting process fall into the sand storage and collection hopper, and the recycling of the sand materials is realized.
2. The invention adopts a mode of combining the rotation of the large turntable and the rotation of the small turntable, can conveniently realize the putting in and taking out of a 3D printing workpiece, realizes the continuous sand blasting of parts and improves the sand blasting efficiency.
3. The nozzles are driven by the swing mechanism to swing up and down, and the 3D printed parts can be uniformly sandblasted in all directions by matching with the rotation of the small turntable, so that the surface quality of the parts is improved.
4. The invention can ensure that the surface of the workpiece reaches a certain roughness to improve the surface quality of the workpiece, saves time and labor on the premise of ensuring the processing quality, can reduce the labor intensity of workers, and can realize the automatic sand blasting of small-sized and multi-variety parts with high quality, high efficiency, low cost, environmental protection.
Drawings
FIG. 1 is a schematic overall outline view of the present invention;
FIG. 2 is a schematic overall profile view of another aspect of the present invention;
FIG. 3 is a schematic view of the present invention with the case removed;
FIG. 4 is a schematic view of the present invention in another orientation with the case removed;
FIG. 5 is a schematic view of the sandblasting assembly of the present invention;
FIG. 6 is a partial enlarged view A of FIG. 5;
FIG. 7 is a schematic view of another aspect of the present blasting assembly;
FIG. 8 is a schematic external view of a large turntable and a small turntable;
FIG. 9 is a schematic view of the outer shape of the large turntable and the small turntable in another direction;
FIG. 10 is a schematic view of the outer shape of the turntable mounting base;
fig. 11 is a schematic external view of a small turntable.
The main part symbols in the figures are explained as follows:
11. a chassis; 12. a cabinet door; 13. a frame; 14. a sand storage and collection hopper; 15. a leakage net; 16. a dust removal pipe; 17. a dust removal fan; 18. a dust removal box; 19. a discharge pipe of the aggregate bin;
21. rotating the large turntable; 22. a large turntable motor; 23. a large turntable drive shaft; 24. a bottom turntable; 25. a bottom turntable shaft; 26. a large turntable fixing seat; 27. a rolling bearing housing;
31. a small turntable; 32. a small turntable motor; 33. a small turntable drive shaft; 34. a belt driving wheel; 35. a belt driven pulley; 36. a small turntable driven wheel; 37. a belt;
311. a small turntable surface; 312. a small turntable rotating shaft; 313. a sleeve;
4. a sand blasting assembly; 41. a pneumatic system input conduit; 42. a nozzle; 43. a high-pressure gas branch pipe; 44. a nozzle driving shaft; 45. a nozzle driven shaft; 46. a pneumatic valve; 47. a sand material pipe; 49. an external mobile air gun;
48. a nozzle swing mechanism; 481. a swing motor; 482. a motor crank; 483. a motor output link; 484. the driving shaft is input into a connecting rod; 485. the driving shaft fixes the connecting rod; 486. a driven shaft input connecting rod; 487. the driven shaft fixes the connecting rod.
Detailed Description
The following description of the embodiments of the present invention is provided to facilitate the understanding of the present invention by those skilled in the art, but it should be understood that the present invention is not limited to the scope of the embodiments, and it will be apparent to those skilled in the art that various changes may be made without departing from the spirit and scope of the invention as defined and defined in the appended claims, and all matters produced by the invention using the inventive concept are protected.
As shown in fig. 1, 2, 3 and 4, the 3D printing part multi-station automatic sand blasting device comprises a case 11, a sand storage and collection hopper 14 is arranged at the bottom of the case 11, and a collection hopper discharge pipe 19 is arranged at the bottom of the sand storage and collection hopper 14; a large rotary table 21 and a sand blasting assembly 4 are arranged in the case 11, the sand blasting assembly 4 is connected with an air compressor, a plurality of small rotary tables 31 which rotate are further arranged on the large rotary table 21, and the small rotary tables 31 are used for placing printing parts; the sand blasting assembly 4 comprises a pneumatic system input pipeline 41 and a plurality of high-pressure air branch pipes 43 connected with the pneumatic system input pipeline 41, the high-pressure air branch pipes 43 are respectively connected with nozzles 42, and the high-pressure air branch pipes 43 are further connected with an external movable air gun 49. The nozzle 42 is also connected with a sand material pipe 47, and the sand material pipe 47 is connected with the collecting hopper discharge pipe 19; a nozzle driving shaft 44 and a nozzle driven shaft 45 are arranged on the case 11, a plurality of nozzles 42 are fixed on the nozzle driving shaft 44 and the nozzle driven shaft 45, and a nozzle swing mechanism 48 is also arranged on the nozzle driving shaft 44 and the nozzle driven shaft 45; the nozzle swing mechanism 48 drives the plurality of nozzles 42 on the nozzle driving shaft 44 and the nozzle driven shaft 45 to swing up and down.
As shown in fig. 5, 6 and 7, the nozzle swing mechanism 48 includes a swing motor 481, a motor crank 482 provided at an output end of the swing motor 481, and a motor output link 483, a driving shaft input link 484, a driving shaft fixed link 485, a driven shaft input link 486, and a driven shaft fixed link 487, which are connected in sequence; the motor output connecting rod 483 is connected with a motor crank 482; the drive shaft input link 484 and drive shaft fixed link 485 are fixed to the nozzle drive shaft 44, and the driven shaft fixed link 487 is fixed to the driven shaft input link 486. The sand blasting assembly 4 is an actuating element of the whole device, and mainly completes the action of spraying the spraying material moving at a high speed to the surface of a workpiece through the nozzle 42, but in order to realize automatic sand blasting and ensure the quality of sand blasting, the sand blasting range needs to be as large as possible, and the nozzle swing mechanism 48 can drive the nozzle driving shaft 44 and the nozzle driven shaft 45 to swing, so that the nozzle 42 on the nozzle driving shaft 44 and the nozzle driven shaft 45 swings up and down, the nozzle 42 has a certain sand blasting range, and the sand blasting quality of the workpiece is ensured.
As shown in fig. 5, the outer part of the nozzle 42 is hinged with a mounting rod which is fixed on the nozzle driving shaft 44 and the nozzle driven shaft 45 through clamping pieces; the clamping piece is provided with a through hole for fixing the mounting rod and a mounting opening for mounting the nozzle driving shaft 44, fastening screws penetrate through two sides of the mounting opening, and fastening threads are arranged on one side of the mounting opening, which is close to the small end of each fastening screw; the through-hole of the fixed mounting rod is perpendicular to the axis of the mounting opening in which the nozzle drive shaft 44 is mounted.
As shown in fig. 10, the large rotary table 21 is further connected with a large rotary table driving device, the large rotary table driving device comprises a large rotary table driving shaft 23 fixed above the large rotary table 21 and a large rotary table motor 22 for driving the large rotary table driving shaft 23, wherein the large rotary table motor 22 is connected with the large rotary table driving shaft 23 through a coupling; the lower extreme of rotatory carousel 21 is fixed with bottom carousel 24, bottom carousel 24 is connected with bottom carousel pivot 25, bottom carousel pivot 25's outside is provided with carousel fixing base 26, still be provided with two antifriction bearings between carousel fixing base 26 and bottom carousel pivot 25, two antifriction bearings are located the upper and lower side of carousel fixing base 26 respectively, the outside of the antifriction bearing that is located the upside still is provided with antifriction bearing cover 27, antifriction bearing cover 27 passes through bolted connection with carousel fixing base 26.
As shown in fig. 11, the small turntable 31 includes a small turntable surface 311, a small turntable rotating shaft 312 connected with the small turntable surface 311, and a sleeve 313 arranged outside the small turntable rotating shaft 312, wherein the upper and lower ends of the sleeve 313 are provided with rolling bearings, and the sleeve 313 is provided with a counter bore for installing the rolling bearing; the rotary turntable 21 is correspondingly provided with a through hole for mounting the sleeve 313.
As shown in fig. 8 and 9, the small turntables 31 are further connected with a small turntable driving device, which includes a belt driving wheel 34, a small turntable driving shaft 33 connected with the belt driving wheel 34, a small turntable motor 32 and a plurality of belt driven wheels 35 connected with the small turntable driving shaft 33, and a belt 37 connecting the belt driving wheel 34 and the belt driven wheels 35; the belt driving wheel 34, the belt driven wheel 35 and the small turntable driven wheel 36 are synchronous wheels, and the belt 37 is a double-sided tooth synchronous belt. The transmission of double-sided tooth hold-in range 37 can drive a plurality of small turntables 31 simultaneously, realizes the simultaneous operation of multistation part, improves sandblast efficiency. Because the multi-station working mode is adopted, in order to realize the continuity of processing, the belt transmission needs to drive a plurality of small turntables to rotate in the working process, the working mode is special, the belt needs to work on two sides, the stability of the belt transmission needs to be considered, and the transmission is preferably realized by a double-side tooth synchronous belt.
The belt driving wheel 34 is provided with one position, the belt driven wheel 35 is provided with three positions, the small turntables 31 are uniformly provided with six positions, the belt driving wheel 34 and the belt driven wheel 35 enable the belt 37 to be in a concave shape, and grooves of the belt 37 are meshed with the three small turntables 36. The work piece carries out the rotation that the sandblast in-process need realize the work piece, three station rotation when processing promptly, and three station rotation is not, and the structural style needs to increase a plurality of leading wheels in the overall arrangement and realizes the transmission condition, has certain requirement to the form of hold-in range, consequently uses double flank tooth synchronous belt drive. Because of the need for multiple driven pulleys, three belt driven pulleys 35 are preferred, as shown in fig. 8 and 9.
The case 11 is connected with a dust removal pipe 16, the dust removal pipe 16 is connected with a dust removal box 18, and the dust removal box 18 is connected with a dust removal fan 17; the dust removal pipe 16 is arranged at the top of the case 11, and the dust removal case 18 is connected with a dust removal fan 17 and fixed below the sand storage and collection hopper 14. Dust and part of sand materials generated in the working process are sucked into the dust removal box 18 by the dust removal fan 17, so that the sand materials are recycled. The sand storage and collection hopper, the dust removal pipe 16, the dust removal box 18 and the dust removal fan 17 can realize the recycling of sand blasting.
A cabinet door 12 is arranged on the cabinet 11, the cabinet 11 is provided with an opening for installing the cabinet door 12, the cabinet door 12 is hinged on the installation opening, and the cabinet door 12 is made of transparent materials; a leakage net 15 is arranged between the case 11 and the sand storage collecting hopper 14, and the leakage net 15 is positioned below the rotary large turntable 21; the bottom of the case 11 is provided with a frame 13; the pneumatic system input pipe 41 is provided with a pneumatic valve 46.
The working process of the invention is as follows: the power generated by an air compressor is sent to the sand blasting assembly 4 through a pneumatic system input pipeline 41, negative pressure is formed in a nozzle 42, sand materials are sucked into the nozzle 42 from a sand storage collecting hopper 14 through a sand material pipe 47, the compressed air and the sand materials are mixed into high-speed jet flow in the nozzle, the high-speed jet flow is sprayed to the surface of a workpiece to be processed, which is conveyed to a processing station by a large turntable 21, through the nozzle 42 which swings up and down, at the moment, the small turntable 31 on the large turntable 21 starts to rotate to process all surfaces of the workpiece, the large turntable 21 is provided with a plurality of small turntables 31, the small turntables 31 can also realize uniform rotation through a small turntable driving device under the driving of the large turntable 21, so that the uniformity of sand blasting of parts on the small turntables 31 is ensured, when one part is subjected to sand blasting, the large turntable 31 starts to convey the next workpiece, and the sand materials which are not utilized in the whole sand blasting process fall into the sand storage collecting hopper 14.
Processing and rotating of the workpiece: in the processing process of a workpiece, in order to ensure the surface processing quality of the workpiece and improve the sand blasting working efficiency of the device, the workpiece is enabled to realize the rotating function by adopting a turntable mode, the workpiece is rotated into two parts, the workpiece is sent into and out of a processing station by a large rotating turntable 21 and rotates in the processing process, a turntable motor 22 drives a large rotating turntable driving shaft 23, and thus the large rotating turntable 21 is driven to rotate; the small turntable motor 32 drives the small turntable driving shaft 33, thereby driving the small turntable 31 to rotate.
Sand storage and collection: in the process of blasting the parts, the used sand falls and is collected in the sand storage and collection hopper 14.
Collecting and filtering dust: the sand material has the nature of granule, can produce very big dust and waste material in the sandblast working process, and the waste material can not in time obtain recovery processing to and the dust that forms in the course of working causes the injury to workman's physical and mental health easily, also can influence processingquality. The sand floating on the case 11 is recovered in the dust removing case 18 by the dust removing pipe 16 and the dust removing fan 17. So that the sand floating in the air can be recycled and the sand in the air can be prevented from influencing the assembly sand blasting operation of the sand blasting assembly 4. The device not only has the function of dust collection and filtration, but also can realize the recycling of sand and stone.
Sand blasting and spraying: in operation of the grit blasting assembly 4, the high velocity air stream passes through the nozzle 42 to form a negative pressure region within the nozzle 42, such that the negative pressure draws grit into the nozzle 42 for mixing with air and subsequent mixing for ejection, the grit ejection being performed by the grit blasting assembly 4.
Pressure regulation: the working pressure required for surface machining is different for different workpieces, and pressure adjustment needs to be realized before the compressed gas enters the nozzle 42, so that proper air pressure flow in the machining process of the sand blasting assembly 4 is provided to meet the technological requirements of different parts.
Claims (10)
1. The multi-station automatic sand blasting device for the 3D printed parts is characterized by comprising a case (11), wherein a sand storage and collection hopper (14) is arranged at the bottom of the case (11), and a collection hopper discharge pipe (19) is arranged at the bottom of the sand storage and collection hopper (14); a rotary large turntable (21) and a sand blasting assembly (4) are arranged in the case (11), the sand blasting assembly (4) is connected with an air compressor, a plurality of rotary small turntables (31) are further arranged on the rotary large turntable (21), and the small turntables (31) are used for placing printing parts;
the sand blasting assembly (4) comprises a pneumatic system input pipeline (41) and a plurality of high-pressure air branch pipes (43) connected with the pneumatic system input pipeline (41), the high-pressure air branch pipes (43) are respectively connected with nozzles (42), the nozzles (42) are also connected with sand pipes (47), and the sand pipes (47) are connected with the collecting hopper discharge pipe (19); a nozzle driving shaft (44) and a nozzle driven shaft (45) are arranged on the case (11), a plurality of nozzles (42) are fixed on the nozzle driving shaft (44) and the nozzle driven shaft (45), and nozzle swing mechanisms (48) are further arranged on the nozzle driving shaft (44) and the nozzle driven shaft (45); the nozzle swing mechanism (48) drives the nozzle driving shaft (44) and the plurality of nozzles (42) on the nozzle driven shaft (45) to swing up and down.
2. The multi-station automatic sand blasting device for 3D printed parts according to claim 1, wherein the nozzle swing mechanism (48) comprises a swing motor (481) and a motor crank (482) arranged at the output end of the swing motor (481), and a motor output connecting rod (483), a driving shaft input connecting rod (484), a driving shaft fixed connecting rod (485), a driven shaft input connecting rod (486) and a driven shaft fixed connecting rod (487) which are connected in sequence; the motor output connecting rod (483) is connected with the motor crank (482); the driving shaft input connecting rod (484) and the driving shaft fixing connecting rod (485) are fixed on the nozzle driving shaft (44), and the driven shaft fixing connecting rod (487) is fixed on the driven shaft input connecting rod (486).
3. The multi-station automatic 3D printed part blasting device according to claim 1, wherein the nozzle (42) is externally hinged with a mounting rod, and the mounting rod is fixed on the nozzle driving shaft (44) and the nozzle driven shaft (45) through clamping pieces; the nozzle is characterized in that a through hole for fixing the mounting rod and a mounting opening for mounting the nozzle driving shaft (44) are formed in the clamping piece, fastening screws penetrate through two sides of the mounting opening, and fastening threads are arranged on one side, close to the small ends of the fastening screws, of the mounting opening.
4. The 3D printing part multi-station automatic sand blasting device according to claim 1, wherein the rotary large turntable (21) is further connected with a large turntable driving device, and the large turntable driving device comprises a large turntable driving shaft (23) fixed above the rotary large turntable (21) and a large turntable motor (22) for driving the large turntable driving shaft (23); a bottom turntable (24) is fixed at the lower end of the rotary large turntable (21), the bottom turntable (24) is connected with a bottom turntable rotating shaft (25), a large turntable fixing seat (26) is arranged outside the bottom turntable rotating shaft (25), two rolling bearings are further arranged between the large turntable fixing seat (26) and the bottom turntable rotating shaft (25), the two rolling bearings are respectively located on the upper side and the lower side of the large turntable fixing seat (26), a rolling bearing cover (27) is further arranged outside the rolling bearing located on the upper side, and the rolling bearing cover (27) is connected with the large turntable fixing seat (26) through screws.
5. The 3D printing part multi-station automatic sand blasting device as claimed in claim 1, wherein the small turntable (31) comprises a small turntable plate surface (311), a small turntable rotating shaft (312) connected with the small turntable plate surface (311), and a sleeve (313) arranged outside the small turntable rotating shaft (312), rolling bearings are arranged at the upper end and the lower end of the sleeve (313), and a countersunk hole for mounting the rolling bearings is formed in the sleeve (313); the rotary large turntable (21) is correspondingly provided with a through hole for mounting the sleeve (313).
6. The 3D printing part multi-station automatic sand blasting device as claimed in claim 1, wherein a plurality of small rotary tables (31) are further connected with a small rotary table driving device, and the small rotary table driving device comprises a belt driving wheel (34), a small rotary table driving shaft (33) connected with the belt driving wheel (34), a small rotary table motor (32) and a plurality of belt driven wheels (35) connected with the small rotary table driving shaft (33), and a belt (37) connecting the belt driving wheel (34) and the belt driven wheels (35); the belt driving wheel (34), the belt driven wheel (35) and the small turntable driven wheel (36) are synchronizing wheels, and the belt (37) is a double-sided tooth synchronous belt.
7. The 3D printing part multi-station automatic sand blasting device as claimed in claim 6, wherein the belt driving wheel (34) is provided with one position, the belt driven wheel (35) is provided with three positions, the small rotary discs (31) are uniformly provided with six positions, the belt driving wheel (34) and the belt driven wheel (35) enable the belt (37) to be in a concave shape, and the grooves of the belt (37) are meshed with the three small rotary disc driven wheels (36).
8. The 3D printing part multi-station automatic sand blasting device according to claim 1, wherein a dust removal pipe (16) is connected to the case (11), a dust removal box (18) is connected to the dust removal pipe (16), and a dust removal fan (17) is connected to the dust removal box (18); the dust removal pipe (16) is arranged at the top of the case (11), and the dust removal box (18) is connected with a dust removal fan (17) and fixed below the sand storage and collection hopper (14).
9. The multi-station automatic 3D printing part sand blasting device according to claim 1, wherein a cabinet door (12) is arranged on the cabinet (11), the cabinet (11) is provided with an opening for installing the cabinet door (12), the cabinet door (12) is hinged on the opening, and the cabinet door (12) is made of transparent material; a leakage net (15) is arranged between the case (11) and the sand storage and collection hopper (14), and the leakage net (15) is positioned below the rotary large turntable (21); a rack (13) is arranged at the bottom of the case (11); and an air pressure valve (46) is arranged on the pneumatic system input pipeline (41).
10. The 3D printing part multi-station automatic sand blasting device according to claim 1, wherein the high-pressure air branch pipe (43) is further connected with an external movable air gun (49).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210847633.0A CN115214130A (en) | 2022-07-19 | 2022-07-19 | Automatic sand blasting unit of 3D printing part multistation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210847633.0A CN115214130A (en) | 2022-07-19 | 2022-07-19 | Automatic sand blasting unit of 3D printing part multistation |
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| CN115214130A true CN115214130A (en) | 2022-10-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210847633.0A Pending CN115214130A (en) | 2022-07-19 | 2022-07-19 | Automatic sand blasting unit of 3D printing part multistation |
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| CN (1) | CN115214130A (en) |
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