CN114986894A - Photocuring 3D printer of ability even covering resin - Google Patents
Photocuring 3D printer of ability even covering resin Download PDFInfo
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- CN114986894A CN114986894A CN202210712286.0A CN202210712286A CN114986894A CN 114986894 A CN114986894 A CN 114986894A CN 202210712286 A CN202210712286 A CN 202210712286A CN 114986894 A CN114986894 A CN 114986894A
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- adjusting
- groove
- seat
- scraper body
- hole
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- 239000011347 resin Substances 0.000 title claims abstract description 61
- 229920005989 resin Polymers 0.000 title claims abstract description 61
- 238000000016 photochemical curing Methods 0.000 title claims abstract description 16
- 239000011248 coating agent Substances 0.000 claims abstract description 43
- 238000000576 coating method Methods 0.000 claims abstract description 43
- 230000005540 biological transmission Effects 0.000 claims description 19
- 239000000741 silica gel Substances 0.000 claims description 15
- 229910002027 silica gel Inorganic materials 0.000 claims description 15
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 14
- 238000007639 printing Methods 0.000 abstract description 7
- 238000000034 method Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 2
- 238000010146 3D printing Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
Images
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
- B29C64/214—Doctor blades
-
- 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
-
- 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
- B29C64/227—Driving means
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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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Optics & Photonics (AREA)
- Coating Apparatus (AREA)
Abstract
The invention relates to a photocuring 3D printer capable of uniformly covering resin, which comprises a base and a scraper body, wherein a resin groove is formed in the top surface of the base, an adjusting seat and a moving seat which are connected through an adjusting rod are arranged on the side surface of the resin groove, a coating long groove is formed in the scraper body, a deflectable flow deflector is arranged in the coating long groove, the flow deflector uniformly guides photosensitive resin in the coating long groove to flow out to cover a printed matter, the flow deflector is stacked in a staggered mode and deflects to increase the contact area with the printed matter, the adjusting rod belt moving seat is rotated to move, the distance between a conveying wheel and a driven wheel is changed, the conveying belt is tightened, the situation that the resin leveling is not in place is avoided, the printing precision is improved, the movement stability of the scraper is improved, and the working efficiency of the printer is prevented from being reduced.
Description
Technical Field
The invention belongs to the technical field of additive manufacturing, and particularly relates to a photocuring 3D printer capable of uniformly covering resin.
Background
The photocuring 3D printer is always favored by the 3D printing industry due to the advantages of high printing precision, good surface smoothness and the like, and the leveling of the surface of the resin is accelerated by driving the scraper to move by the conveying belt advancing along the horizontal direction in the printing process, so that the resin can fill up the uneven structure of the surface of a product after the resin is cured. However, when the scraper of the existing photocuring 3d printer scrapes a printed matter with a complex structure, the collected resin is unevenly distributed due to the movement of the scraper, the surface of the complex printed matter is more fluctuated, the resin is difficult to uniformly cover the printed matter, and the scraper needs to frequently reciprocate to ensure that the resin is uniformly filled on the surface of the printed matter after leveling, so that the printing efficiency is reduced; meanwhile, the conveyor belt drives the scraper for a long time, so that the scraper is easy to loose and droop under stress, the distance between the scraper and a printed matter is too short when the scraper moves, the resin on the printed matter after the scraper is scraped is less, and the printed matter cannot be effectively leveled and covered, so that the printing quality is reduced. Therefore, the technical problem to be solved is to design a light-cured 3D printer capable of uniformly covering resin, which can reduce the reciprocating times of the scraper and improve the leveling efficiency.
Disclosure of Invention
The invention provides a photocuring 3D printer capable of uniformly covering resin to solve the problems.
According to the technical scheme, the photocuring 3D printer capable of uniformly covering resin comprises a base and a scraper body, wherein a resin groove is formed in the top surface of the base, the scraper body is located corresponding to the resin groove, a pair of runner seats are connected to two sides of the resin groove and are respectively hinged with a transmission wheel and a driven wheel, the transmission wheel is connected with a driving motor for matching and linkage, the bottom of the driving motor is fixedly connected with the base, a transmission belt is connected between the transmission wheel and the driven wheel which are arranged on the same side of the resin groove, two ends of the scraper body are provided with connection screw holes and connection bolts, the transmission belt is provided with through holes corresponding to the connection screw holes, and the connection bolts penetrate through the through holes to be matched with the connection screw holes; the bottom surface of the scraper body is provided with a coating long groove, the coating long groove extends along the length direction of the scraper body, a plurality of flow deflectors are arranged in the coating long groove, the flow deflectors are all arc-shaped plate structures, the bottoms of the flow deflectors are matched with the positions of the notches of the coating long groove, the flow deflectors comprise a plurality of positive flow deflectors and a plurality of reverse flow deflectors, and the positive flow deflectors and the reverse flow deflectors are staggered and stacked and arranged along the length direction of the coating long groove; the scraper body is also provided with a deflection shaft parallel to the coating long groove, the deflection shaft penetrates through the top of the coating long groove and extends out of two ends of the scraper body, rotating shafts are connected to two sides of the deflection shaft, the rotating shafts are hinged to the top of the flow deflector, and the rotating shafts are parallel to the deflection shafts; the side surface of the scraper body is also connected with a deflection motor, and the deflection motor is connected with one end of a deflection shaft to rotate in a matching manner; the rotating wheel seat connected with the driven wheel comprises an adjusting seat, a moving seat and an adjusting rod, the moving seat is connected with the driven wheel, the adjusting rod is parallel to the conveying belt, and the adjusting rod is connected with the adjusting seat and the moving seat and is matched with the adjusting rod in a moving mode along the adjusting rod.
After the method is adopted, resin is injected into the coating long groove in advance, when the scraper body scrapes the surface of the printed matter, the flow deflector extending out of the coating long groove is extruded by the printed matter, the flow deflector deflects by being hinged with the rotating shaft, the surface of the printed matter is attached and the contact area is increased in an inclined mode, the positive flow deflector and the negative flow deflector are arranged in a staggered and overlapped mode, the positive flow deflector and the negative flow deflector are spaced, two times of resin flow guiding can be completed simultaneously after deflection, the contact surface with the printed matter is enlarged, and the resin covering of the printed matter is accelerated and the printed matter is leveled; the deflection motor connected to the scraper body drives the deflection shaft to rotate to drive the rotation shafts on two sides to move, so that the horizontal heights of the deflection shaft and the rotation shaft are different, and further the difference is generated between the guide vanes connected with the rotation shaft, when the deflection shaft deflects towards the lower side of the guide vanes, the contact area between the deflected guide vanes and a printed matter can be further increased, and resin can be more quickly and effectively covered on the printed matter; the adjusting seat and the moving seat are connected through the adjusting rod to move and cooperate, so that the moving seat moves relative to the adjusting seat along the direction of the conveyor belt, the distance between the conveyor belt and the driven wheel is changed, the conveyor belt is tightened by pulling the two wheels, the sagging caused by the fact that the conveyor belt is loosened after the conveyor belt pulls the scraper body for a long time is eliminated, the scraper body is prevented from shaking, and the distance between the scraper body and a printed matter and the effect of auxiliary leveling are kept; the guide vanes are uniformly used for guiding photosensitive resin in the coating long grooves to flow out to cover printed matters, the guide vanes are stacked in a staggered mode and deflect to increase the contact area with the printed matters, the adjusting rod belt moving seat is rotated to move, the conveying wheel and the distance between the driven wheel are changed to tighten the conveying belt, the situation that resin leveling is not in place is avoided, printing precision is improved, the moving stability of a scraper is improved, and the reduction of the working efficiency of a printer is prevented.
As a further improvement of the invention, one side of the adjusting seat facing the driving motor is provided with an adjusting groove, the moving seat is inserted in the adjusting groove, the moving seat is provided with a connecting plate, and the connecting plate is hinged with the driven wheel; the side wall of the adjusting groove facing the driving motor is provided with an adjusting hole; the movable seat is further provided with a threaded through hole, two ends of the adjusting rod are respectively provided with a threaded rod and a limiting block, one end of the adjusting rod, which is provided with the threaded rod, penetrates through the adjusting hole and is screwed with the threaded through hole, and the diameter of the limiting block is larger than that of the adjusting hole.
After the method is adopted, the adjusting rod in the adjusting hole is rotated, the threaded rod at one end is in running fit with the threaded through hole to move towards the direction of the conveying wheel, the limiting block at the other end of the adjusting rod abuts against the adjusting seat to prevent the adjusting rod from being pulled into the adjusting groove completely, the moving seat can be driven to move towards the adjusting groove when the threaded rod continues to rotate, the driven wheel moves along with the connecting plate on the moving seat, and the rotating amplitude of the adjusting rod is controlled to accurately adjust the distance between the driven wheel and the conveying wheel.
As a further improvement of the invention, the adjusting groove extends to the top surface of the adjusting seat to form a positioning opening, the top end of the moving seat is connected with a positioning plate, the positioning plate is attached to the top surface of the adjusting seat, the positioning plate is provided with a strip-shaped through hole parallel to the adjusting rod, the adjusting seat is provided with a threaded hole and a positioning bolt, the threaded hole corresponds to the strip-shaped through hole, and the diameter of the head of the positioning bolt is larger than the width of the strip-shaped through hole; and a spring washer is sleeved on a screw rod of the positioning bolt.
After the method is adopted, the adjusting rod is rotated to adjust the movable seat to a proper position, the positioning bolt penetrates through the strip-shaped through hole to be screwed with the threaded hole, the positioning plate is tightly pressed on the top surface of the adjusting seat through the fact that the diameter of the head of the positioning bolt is larger than the width of the strip-shaped through hole, the tension of the adjusting rod on the conveying belt is shared, and the adjusting rod is prevented from being pulled to be loosened; the screw rod through positioning bolt overlaps and is equipped with spring washer, and after positioning bolt and screw hole were twisted and is closed, spring washer withstood positioning bolt, prevented that positioning bolt is not hard up.
As a further improvement of the scraper, the top surface of the base is connected with a guide rail, the guide rail is parallel to the transmission direction of the conveyor belt, and two ends of the scraper body are provided with guide seats which are in slidable connection with the guide rail; the base still is equipped with a plurality of photosensitive sensor, the equal electric connection driving motor of a plurality of photosensitive sensor, this a plurality of photosensitive sensor's position suits with the position of runner seat, the both ends of scraper body are still connected and are equipped with the anti-dazzling screen, and the position of this anti-dazzling screen suits with photosensitive sensor's position.
After the method is adopted, the guide seats at the two ends of the scraper body are connected with the guide rails for matching, and the guide rails guide the scraper body to move, so that the stability of the scraper body in moving is further improved, and the scraper body is prevented from shaking towards the advancing direction of the conveyor belt in moving; when the scraper body moves to the runner seat department at conveyer belt both ends, pass through the anti-dazzling screen and sweep and shelter from photosensitive sensor, photosensitive sensor signals of telecommunication makes driving motor reverse drive, prevents that the conveyer belt from skidding and leading to the skew of scraper body and runner seat to take place to contradict, avoids the two to appear damaging.
As a further improvement of the invention, the bottoms of the flow deflectors are all sunken to form flow guide grooves, and a plurality of arc-shaped convex blocks are arranged in the flow guide grooves; and drainage ports are arranged among the arc-shaped convex blocks and extend towards the top surface of the coating elongated slot to form drainage seams.
After the method is adopted, the bottom of the flow deflector is sunken to form the flow guide groove, the inner wall of the flow guide groove is provided with a plurality of arc-shaped bumps in an arrangement mode, and when the printed matter is scraped by the flow deflector, the lower end of the flow deflector can be improved to be attached to the uneven surface of the printed matter, so that the resin can fully fill the surface space of the printed matter, and the quality of a finished product is improved; the drainage openings are arranged among the arc-shaped convex blocks, the drainage openings extend towards the top surface of the coating long groove to form drainage seams, after the resin contacts the flow deflector in the coating long groove, the resin flows downwards to the drainage openings along the drainage seams according to the principle of pressure difference, and then the flow of the resin can be uniformly controlled by the drainage seams from the drainage openings to the lowest points of the arc-shaped convex blocks at two sides, so that the drainage seams can guide the flow, and the excessive resin covering the surface of a printed matter is avoided.
As a further improvement of the invention, a plurality of parallel strip-shaped convex teeth are arranged on the inner surface of the transmission belt, the strip-shaped convex teeth are arranged at intervals along the length direction of the transmission belt, a plurality of tooth grooves matched with the strip-shaped convex teeth are arranged on the surfaces of the transmission wheel and the driven wheel, and the strip-shaped convex teeth are meshed with the tooth grooves.
After the method is adopted, the strip-shaped convex teeth on the inner surface of the conveying belt are meshed with the tooth grooves of the conveying wheel and the driven wheel, so that slipping when the conveying belt is driven to move is avoided, errors generated when the conveying belt and the scraper body move are prevented, and the moving precision of the scraper body is improved.
As a further improvement of the invention, the side wall of the long coating groove is provided with a plurality of silica gel cushion blocks in a connecting way, and the positions of the silica gel cushion blocks correspond to the positions of the flow deflectors.
After the method is adopted, the silica gel cushion block is arranged on the side wall of the coating long groove, the position of the silica gel cushion block corresponds to that of the flow deflector, the silica gel cushion block is extruded when the flow deflector deflects to the limit, the silica gel cushion block deforms to generate elasticity to relieve the pressure of the flow deflector, and the damage caused by the fact that the flow deflector directly extrudes and coats the inner wall of the long groove is avoided.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic view of a deflector deflecting structure.
Fig. 3 is a schematic view of a light shielding sheet.
Fig. 4 is a schematic view of the adjusting seat.
Fig. 5 is a schematic cross-sectional view of the blade body.
Fig. 6 is a schematic view of a structure of a guide vane.
Fig. 7 is a schematic view of the conveyor belt structure.
1-base, 2-scraper body, 3-resin tank, 4-runner seat, 5-conveying wheel, 6-driven wheel, 7-driving motor, 8-conveying belt, 9-connecting screw hole, 10-coating elongated slot, 11-deflector, 12-deflection shaft, 13-rotation shaft, 14-deflection motor, 15-adjusting seat, 16-moving seat, 17-adjusting groove, 18-connecting plate, 19-adjusting hole, 20-adjusting rod, 21-threaded rod, 22-limiting block, 23-positioning hole, 24-positioning plate, 25-bar through hole, 26-positioning bolt, 27-spring washer, 28-guide rail, 29-guiding seat, 30-photosensitive sensor, 31-shading sheet, 32-arc-shaped convex blocks, 33-drainage seams, 34-strip-shaped convex teeth, 35-tooth grooves and 36-silica gel cushion blocks.
Detailed Description
As shown in fig. 1-7, a photo-curing 3D printer capable of uniformly covering resin comprises a base 1 and a scraper body 2, the top surface of the base 1 is provided with a resin groove 3, the position of the scraper body 2 corresponds to the resin groove 3, a pair of runner seats 4 are connected with both sides of the resin tank 3, the pair of runner seats 4 are respectively hinged with a transmission wheel 5 and a driven wheel 6, the transmission wheel 5 is connected with a driving motor 7 for matching and linkage, the bottom of the driving motor 7 is fixedly connected with the base 1, a conveying belt 8 is connected and arranged between the conveying wheel 5 and the driven wheel 6 which are arranged at the same side of the resin groove 3, two ends of the scraper body 2 are provided with connecting screw holes 9 and connecting bolts, the conveyor belt 8 is provided with through holes corresponding to the connecting screw holes 9, and the connecting bolts penetrate through the through holes and are screwed with the connecting screw holes 9; the bottom surface of the scraper body 2 is provided with a coating elongated slot 10, the coating elongated slot 10 extends along the length direction of the scraper body 2, a plurality of flow deflectors 11 are arranged in the coating elongated slot 10, the flow deflectors 11 are all arc-shaped plate structures, the bottoms of the flow deflectors 11 are matched with the notch position of the coating elongated slot 10, the flow deflectors 11 comprise a plurality of positive flow deflectors and a plurality of reverse flow deflectors, and the positive flow deflectors and the reverse flow deflectors are staggered and stacked and arranged along the length direction of the coating elongated slot 10; the scraper body 2 is further provided with a deflection shaft 12 parallel to the coating long groove 10, the deflection shaft 12 penetrates through the top of the coating long groove 10 and extends out of two ends of the scraper body 2, two sides of the deflection shaft 12 are respectively connected with a rotating shaft 13, the rotating shafts 13 are hinged with the top of the flow deflector 11, and the rotating shafts 13 are parallel to the deflection shaft 12; the side surface of the scraper body 2 is also connected with a deflection motor 14, and the deflection motor 14 is connected with one end of a deflection shaft 12 for matching rotation; the rotating wheel seat 4 connected with the driven wheel 6 comprises an adjusting seat 15, a moving seat 16 and an adjusting rod 20, the moving seat 16 is connected with the driven wheel 6, the adjusting rod 20 is parallel to the conveying belt 8, and the adjusting rod 20 is connected with the adjusting seat 15 and the moving seat 16 and is matched with the adjusting rod 20 in a moving mode.
By injecting resin into the coating elongated slot 10 in advance, when the scraper body 2 scrapes the surface of a printed matter, the flow deflector 11 extending out of the coating elongated slot 10 is extruded by the printed matter, the flow deflector 11 deflects by being hinged with the rotating shaft 13, is attached to the surface of the printed matter and inclines to increase the contact area, and the positive flow deflector and the negative flow deflector are arranged in a staggered and stacked mode with an interval in position, so that twice resin flow guidance can be simultaneously completed after deflection, the contact surface with the printed matter is enlarged, and the resin covering of the printed matter and leveling are accelerated; the deflection motor 14 connected to the scraper body 2 drives the deflection shaft 12 to rotate to drive the rotation shafts 13 on two sides to move, so that the horizontal heights of the two rotation shafts are different, and further the guide vanes 11 connected with the rotation shafts 13 are different, when the rotation shafts deflect towards the lower side of the guide vanes, the contact area between the deflected guide vanes and a printed matter can be further increased, and resin can be more quickly and effectively covered on the printed matter; the adjusting rod 20 is connected with the adjusting seat 15 and the moving seat 16 to move and match, so that the moving seat 16 moves relative to the adjusting seat 15 along the direction of the conveyor belt 8, the distance between the conveyor wheel 5 and the driven wheel 6 is changed, the conveyor belt is tightened by pulling two wheels, the drooping caused by the fact that the conveyor belt 8 loosens after pulling the scraper body 2 for a long time is eliminated, the scraper body 2 is prevented from shaking, and the distance between the scraper body 2 and printed matters and the effect of auxiliary leveling are kept; the guide vanes 11 uniformly guide the photosensitive resin in the coating elongated slot 10 to flow out to cover the printed matter, the guide vanes 11 are stacked in a staggered mode and deflect to increase the contact area with the printed matter, the adjusting rod 20 is rotated to drive the moving seat 16 to move, the distance between the conveying wheel 5 and the driven wheel 6 is changed, the conveying belt 8 is tightened, the situation that the resin is not in place in leveling is avoided, the printing precision is improved, the moving stability of the scraper is improved, and the reduction of the working efficiency of the printer is prevented.
An adjusting groove 17 is formed in one side, facing the driving motor 7, of the adjusting seat 15, the moving seat 16 is inserted into the adjusting groove 17, a connecting plate 18 is arranged on the moving seat 16, and the connecting plate 18 is hinged with the driven wheel 6; the side wall of the adjusting groove 17 facing the driving motor 7 is provided with an adjusting hole 19; remove seat 16 and still be equipped with the screw thread through-hole, the both ends of adjusting pole 20 are equipped with threaded rod 21 and stopper 22 respectively, and the one end that should adjust pole 20 and be equipped with threaded rod 21 passes regulation hole 19 and screw thread through-hole and twists and combine, the diameter of stopper 22 is greater than the diameter of regulation hole 19.
The threaded rod 21 at one end is in running fit with the threaded through hole to move towards the direction of the conveying wheel 5 by rotating the adjusting rod 20 in the adjusting hole 19, the limiting block 22 at the other end of the adjusting rod 20 abuts against the adjusting seat 15 to prevent the adjusting rod 20 from being pulled into the adjusting groove 17 completely, the moving seat 16 can be driven to move towards the adjusting groove 17 when the threaded rod 21 continues to rotate, the driven wheel 6 moves along with the connecting plate 18 on the moving seat 16, and the distance between the driven wheel 6 and the conveying wheel 5 can be accurately adjusted by controlling the rotating amplitude of the adjusting rod 20.
The adjusting groove 17 extends to the top surface of the adjusting seat 15 to form a positioning opening 23, the top end of the moving seat 16 is connected with a positioning plate 24, the positioning plate 24 is attached to the top surface of the adjusting seat 15, the positioning plate 24 is provided with a strip-shaped through hole 25 parallel to the adjusting rod 20, the adjusting seat 15 is provided with a threaded hole corresponding to the strip-shaped through hole 25 and a positioning bolt 26, and the diameter of the head of the positioning bolt 26 is larger than the width of the strip-shaped through hole 25; the screw sleeve of the positioning bolt 26 is provided with a spring washer 27.
After the adjusting rod 20 is rotated to adjust the moving seat 16 to a proper position, the positioning bolt 26 penetrates through the strip-shaped through hole 25 to be screwed with the threaded hole, the positioning plate 24 is tightly pressed on the top surface of the adjusting seat 15 through the fact that the diameter of the head of the positioning bolt 26 is larger than the width of the strip-shaped through hole 25, the tension of the conveyor belt 8 on the adjusting rod 20 is shared, and the adjusting rod 20 is prevented from being pulled to be loosened; the screw rod sleeve through positioning bolt 26 is equipped with spring washer 27, and after positioning bolt 26 and screw hole twist, spring washer 27 withstands positioning bolt 26, prevents that positioning bolt 26 from becoming flexible.
The top surface of the base 1 is connected with a guide rail 28, the guide rail 28 is parallel to the transmission direction of the conveyor belt 8, two ends of the scraper body 2 are provided with guide seats 29, and the guide seats 29 are slidably connected with the guide rail 28; the base 1 is further provided with a plurality of photosensitive sensors 30, the photosensitive sensors 30 are electrically connected with the driving motor 7, the positions of the photosensitive sensors 30 are matched with the position of the runner seat 4, the two ends of the scraper body 2 are further connected with the light shading sheets 31, and the positions of the light shading sheets 31 are matched with the positions of the photosensitive sensors 30.
The guide seats 29 at the two ends of the scraper body 2 are connected with the guide rails 28 for matching, and the guide rails 28 guide the scraper body 2 to move, so that the stability of the scraper body 2 during moving is further improved, and the scraper body 2 is prevented from shaking towards the advancing direction of the conveyor belt 8 during moving; when scraper body 2 removed the runner seat 4 department to 8 both ends of conveyer belt, swept and sheltered from photosensitive sensor 30 through anti-dazzling screen 31, photosensitive sensor 30 signals of telecommunication makes driving motor 7 back drive, prevents that conveyer belt 8 from skidding and leading to scraper body 2's offset and runner seat 4 to take place to contradict, avoids the two damage to appear.
The bottoms of the flow deflectors 11 are all sunken to form flow guide grooves, and a plurality of arc-shaped lugs 32 are arranged in the flow guide grooves; drainage openings are formed among the arc-shaped convex blocks 32 and extend towards the top surface of the long coating groove 10 to form drainage seams 33.
The bottom of the flow deflector 11 is sunken to form a flow guide groove, a plurality of arc-shaped bumps 32 are arranged on the inner wall of the flow guide groove, and when printed matters are scraped by the flow deflector 11, the lower end of the flow deflector 11 can be improved to be attached to the uneven surface of the printed matters, so that the resin can fully fill the surface space of the printed matters, and the quality of finished products is improved; through arranging the drainage openings among the arc-shaped convex blocks 32, the drainage openings extend towards the top surface of the long coating groove 10 to form the drainage slits 33, after the resin contacts the flow deflector 11 in the long coating groove 10, the resin flows downwards to the drainage openings along the drainage slits 33 through the principle of pressure difference, and then the drainage slits 33 guide the flow to the lowest points of the arc-shaped convex blocks 32 at two sides, so that the outflow speed of the resin can be uniformly controlled, and the excessive resin covering the surface of a printed matter is avoided.
The inner surface of the transmission belt 8 is provided with a plurality of parallel strip-shaped convex teeth 34, the strip-shaped convex teeth 34 are arranged at intervals along the length direction of the transmission belt 8, the surfaces of the transmission wheel 5 and the driven wheel 6 are provided with a plurality of tooth grooves 35 which are matched with the strip-shaped convex teeth 34, and the strip-shaped convex teeth 34 are meshed with the tooth grooves 35.
Strip-shaped convex teeth 34 on the inner surface of the conveying belt 8 are meshed with the conveying wheel 5 and a toothed groove 35 of the driven wheel 6, so that slipping when the conveying belt 8 is driven to move is avoided, errors are prevented from being generated when the conveying belt 8 and the scraper body 2 move, and the moving precision of the scraper body 2 is improved.
The side wall of the long coating groove 10 is provided with a plurality of silica gel cushion blocks 36 in a connecting manner, and the positions of the silica gel cushion blocks 36 correspond to the positions of the flow deflectors 11.
The silica gel cushion block 36 is arranged on the side wall of the coating long groove 10, the position of the silica gel cushion block 36 corresponds to the position of the flow deflector 11, the silica gel cushion block 36 is extruded when the flow deflector 11 deflects to the limit, the silica gel cushion block 36 deforms to generate elasticity to relieve the pressure of the flow deflector 11, and damage caused by the fact that the flow deflector 11 directly extrudes and coats the inner wall of the long groove 10 is avoided.
Claims (7)
1. The utility model provides a photocuring 3D printer of ability even covering resin, includes base (1) and scraper body (2), the top surface of base (1) is equipped with resin groove (3), the position of scraper body (2) corresponds its characterized in that with resin groove (3): the scraper is characterized in that a pair of rotating wheel seats (4) are connected and arranged on two sides of the resin tank (3), the rotating wheel seats (4) are respectively hinged with a conveying wheel (5) and a driven wheel (6), the conveying wheel (5) is connected with a driving motor (7) for matching and linkage, the bottom of the driving motor (7) is fixedly connected with a base (1), a conveying belt (8) is connected and arranged between the conveying wheel (5) and the driven wheel (6) which are arranged on the same side of the resin tank (3), two ends of the scraper body (2) are provided with connecting screw holes (9) and connecting bolts, the conveying belt (8) is provided with through holes corresponding to the connecting screw holes (9), and the connecting bolts penetrate through the through holes to be screwed with the connecting screw holes (9); a coating long groove (10) is formed in the bottom surface of the scraper body (2), the coating long groove (10) extends along the length direction of the scraper body (2), a plurality of flow deflectors (11) are arranged in the coating long groove (10), the flow deflectors (11) are all arc-shaped plate structures, the bottoms of the flow deflectors (11) are matched with the notch position of the coating long groove (10), the flow deflectors (11) comprise a plurality of positive flow deflectors and a plurality of negative flow deflectors, and the positive flow deflectors and the negative flow deflectors are staggered and stacked in the length direction of the coating long groove (10); the scraper body (2) is further provided with a deflection shaft (12) parallel to the coating long groove (10), the deflection shaft (12) penetrates through the top of the coating long groove (10) and extends out of two ends of the scraper body (2), two sides of the deflection shaft (12) are respectively connected with a rotating shaft (13), the rotating shafts (13) are hinged to the top of the flow deflector (11), and the rotating shafts (13) are parallel to the deflection shaft (12); the side surface of the scraper body (2) is also connected with a deflection motor (14), and the deflection motor (14) is connected with one end of a deflection shaft (12) to rotate in a matching manner; the runner seat (4) connected with the driven wheel (6) comprises an adjusting seat (15), a moving seat (16) and an adjusting rod (20), the moving seat (16) is connected with the driven wheel (6), the adjusting rod (20) is parallel to the conveying belt (8), and the adjusting rod (20) is connected with the adjusting seat (15) and the moving seat (16) and is matched with the adjusting rod (20) in a moving mode.
2. The photo-curing 3D printer capable of uniformly covering resin according to claim 1, wherein: an adjusting groove (17) is formed in one side, facing the driving motor (7), of the adjusting seat (15), the moving seat (16) is inserted into the adjusting groove (17), a connecting plate (18) is arranged on the moving seat (16), and the connecting plate (18) is hinged to the driven wheel (6); the side wall of the adjusting groove (17) facing the driving motor (7) is provided with an adjusting hole (19); the movable seat (16) is further provided with a threaded through hole, two ends of the adjusting rod (20) are respectively provided with a threaded rod (21) and a limiting block (22), one end of the adjusting rod (20) provided with the threaded rod (21) penetrates through the adjusting hole (19) to be screwed with the threaded through hole, and the diameter of the limiting block (22) is larger than that of the adjusting hole (19).
3. The photo-curing 3D printer capable of uniformly covering resin according to claim 2, wherein: the adjusting groove (17) extends to the top surface of the adjusting seat (15) to form a positioning opening (23), the top end of the moving seat (16) is connected with a positioning plate (24), the positioning plate (24) is attached to the top surface of the adjusting seat (15), the positioning plate (24) is provided with a strip-shaped through hole (25) parallel to the adjusting rod (20), the adjusting seat (15) is provided with a threaded hole corresponding to the strip-shaped through hole (25) and a positioning bolt (26), and the diameter of the head of the positioning bolt (26) is larger than the width of the strip-shaped through hole (25); and a spring washer (27) is sleeved on the screw rod of the positioning bolt (26).
4. The photo-curing 3D printer capable of uniformly covering resin according to claim 1, wherein: the scraper is characterized in that a guide rail (28) is connected to the top surface of the base (1), the guide rail (28) is parallel to the transmission direction of the conveyor belt (8), guide seats (29) are arranged at two ends of the scraper body (2), and the guide seats (29) are connected with the guide rail (28) in a sliding manner; base (1) still is equipped with a plurality of photosensitive sensor (30), the equal electric connection driving motor (7) of a plurality of photosensitive sensor (30), the position of this a plurality of photosensitive sensor (30) suits with the position of runner seat (4), the both ends of scraper body (2) are still connected and are equipped with anti-dazzling screen (31), and the position of this anti-dazzling screen (31) suits with the position of photosensitive sensor (30).
5. The photo-curing 3D printer capable of uniformly covering resin according to claim 1, wherein: the bottoms of the flow deflectors (11) are all sunken to form flow guide grooves, and a plurality of arc-shaped convex blocks (32) are arranged in the flow guide grooves; drainage openings are formed among the arc-shaped convex blocks (32), and extend towards the top surface of the long coating groove (10) to form drainage seams (33).
6. The photo-curing 3D printer capable of uniformly covering resin according to claim 1, wherein: the inner surface of the transmission belt (8) is provided with a plurality of parallel strip-shaped convex teeth (34), the strip-shaped convex teeth (34) are arranged at intervals along the length direction of the transmission belt (8), the surfaces of the transmission wheel (5) and the driven wheel (6) are provided with a plurality of tooth grooves (35) matched with the strip-shaped convex teeth (34), and the strip-shaped convex teeth (34) are meshed with the tooth grooves (35).
7. The photo-curing 3D printer capable of uniformly covering resin according to claim 1, wherein: the side wall of the long coating groove (10) is connected with a plurality of silica gel cushion blocks (36), and the positions of the silica gel cushion blocks (36) correspond to the positions of the flow deflectors (11).
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CN202210712286.0A CN114986894A (en) | 2022-06-22 | 2022-06-22 | Photocuring 3D printer of ability even covering resin |
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CN202210712286.0A CN114986894A (en) | 2022-06-22 | 2022-06-22 | Photocuring 3D printer of ability even covering resin |
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