CN210706050U - SLA equipment for forming high-viscosity slurry - Google Patents
SLA equipment for forming high-viscosity slurry Download PDFInfo
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- CN210706050U CN210706050U CN201920814410.8U CN201920814410U CN210706050U CN 210706050 U CN210706050 U CN 210706050U CN 201920814410 U CN201920814410 U CN 201920814410U CN 210706050 U CN210706050 U CN 210706050U
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Abstract
The utility model discloses a SLA equipment for high viscosity thick liquids take shape, including the shaping room, the bottom of shaping room has set gradually feeding bin, shaping storehouse and has received the feed bin, is provided with lift platform an in the feeding bin, is provided with lift platform b in the shaping storehouse, is provided with the scraper module in the shaping room, and scraper module, lift platform a and lift platform b all are connected with control system. The utility model discloses a SLA equipment passes through the horizontal migration of scraper and the vertical removal of push pedal, lays high viscosity thick liquids evenly on lift platform b, has effectively avoided high viscosity thick liquids to bond at the scraper and has leaded to the problem that the substrate lacks the material that takes shape.
Description
Technical Field
The utility model belongs to the technical field of 3D prints, concretely relates to an SLA equipment for high viscosity thick liquids take shape.
Background
Stereolithography (SLA) was the earliest proposed and commercially used rapid prototyping technology, which works on the principle of photo-polymerization of photosensitive resins. And controlling ultraviolet laser to scan the photosensitive resin by using a computer, curing the photosensitive resin in the scanning area, and gradually stacking until the required part is formed. Because of its low cost and high precision of the parts to be produced, the scope of application of the SLA process is broadened from simple resin molding to molding of materials such as ceramics and metals, and also molding of mixed resin materials such as ceramic-based slurries. The ceramic slurry is a mixture of resin and ceramic powder, has better performance than photosensitive resin, higher strength and hardness, good toughness and good heat resistance, but has higher viscosity, so that the traditional SLA equipment is difficult to print and form.
When the prior SLA equipment carries out curing and forming treatment on liquid resin light, all liquid resin materials are completely filled into a forming bin, the surface of the liquid resin materials is leveled by means of self-leveling motion of the liquid resin materials, and the surface of the liquid resin materials is further leveled by a scraper. However, when the existing SLA device is used for curing and forming the high-viscosity mixed resin material, the high-viscosity mixed resin material has high viscosity and does not have fluidity of the liquid resin material, so that the surface of the high-viscosity mixed resin material cannot be leveled in a self-leveling manner, the high-viscosity mixed resin material is very easy to adhere to a spreading scraper, and then more slurry is adsorbed, so that the material shortage on a forming platform is caused, and the feeding cannot be completed by the descending of the forming platform.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a SLA equipment for high viscosity thick liquids takes shape has solved the easy adhesion stone scraper of high viscosity mixed resin material who exists among the prior art, and the high viscosity mixed resin material of uncured on the shaping platform is difficult to in time clear up, causes the problem of material pollution.
The utility model discloses the technical scheme who adopts is for the SLA equipment that high viscosity thick liquids take shape, including the shaping room, the bottom of shaping room has set gradually feeding bin, shaping storehouse and has received the feed bin, is provided with lift platform an in the feeding bin, is provided with lift platform b in the shaping storehouse, is provided with the scraper module in the shaping room, and scraper module, lift platform a and lift platform b all are connected with control system.
The utility model discloses a characteristics still lie in:
the scraper module comprises a scraper bracket, a scraper mounting frame is installed in one side of the scraper bracket, at least one cylinder is arranged on one side of the scraper mounting frame, a piston rod end portion of the cylinder is provided with a push plate, the push plate is perpendicular to the scraper mounting frame body and is parallel to the horizontal plane, a scraper is arranged in the scraper mounting frame body close to the bottom, a cutting edge end of the scraper stretches out of the bottom of the scraper mounting frame, the scraper and the push plate are perpendicular to each other, and a gap is formed between the scraper and the push.
The cross section of scraper bracket is right triangle, and one of them right angle limit place side of scraper bracket is on a parallel with the horizontal plane, is provided with to the body along the bottom of scraper bracket with scraper mounting bracket assorted groove a, the scraper mounting bracket is installed in groove a, the body correspondence of scraper bracket and scraper mounting bracket is provided with two at least pairs of mounting holes.
The cross section of the scraper mounting frame is rectangular, a groove b matched with the scraper is arranged on the body along the bottom of the scraper mounting frame, at least two threaded holes a are formed in the groove b, a through hole b corresponding to the threaded holes a is formed in the body of the scraper, and the scraper penetrates through the through hole b and the threaded holes a through screws and is fixed on the scraper mounting frame.
The cross section of the push plate is rectangular, and the length of the push plate is not less than that of the scraper.
The air cylinder is a micro air cylinder and comprises any one of a double-acting air cylinder and a single-acting spring press-back air cylinder.
The end of the piston rod of the air cylinder is provided with an internal thread, the push plate is provided with a countersunk hole c, the internal thread and the countersunk hole c are matched with a countersunk screw, and the push plate penetrates through the countersunk hole c through the countersunk screw to be connected with the piston rod of the air cylinder.
The side surface of the lifting platform a is provided with a sealing felt a, the felt a is tightly attached to the inner wall of the feeding bin, the bottom of the lifting platform a is provided with a rectangular hollow mounting frame a, a screw rod a is arranged in the mounting frame a, one end, far away from the lifting platform a, of the screw rod a is connected with a screw rod nut, the screw rod a extends out of the bottom of the mounting frame a, and a shaft of a servo motor a is connected with the screw rod a through a.
The side surface of the lifting platform b is provided with a sealing felt b, the felt b is tightly attached to the inner wall of the forming bin, the bottom of the lifting platform b is provided with a rectangular hollow mounting rack b, a screw rod b is arranged in the mounting rack b, one end, far away from the lifting platform b, of the screw rod b is connected with a screw rod nut, the screw rod b stretches out of the bottom of the mounting rack b, a shaft connected with a servo motor b through a shaft coupling b is connected, and a partition plate is arranged between the feeding bin.
The utility model has the advantages that:
the utility model discloses a SLA equipment for high viscosity thick liquids takes shape, through the horizontal migration of scraper and the vertical movement of push pedal, will be used for the high viscosity thick liquids that SLA equipment printed to lay evenly on the shaping substrate, effectively avoided high viscosity thick liquids to bond on the scraper and lead to shaping substrate starving, influence the problem of final product quality; the utility model discloses an SLA equipment for high viscosity thick liquids takes shape can be lastingly, steadily carry the high viscosity thick liquids to the substrate that takes shape, through the removal and the stopping of solenoid valve control cylinder, has realized the automation of 3D printing process, also ensures to print out high-quality mixed material part simultaneously; the utility model is used for fashioned SLA equipment of high viscosity thick liquids simple structure, simple operation, low in cost.
Drawings
FIG. 1 is a schematic structural view of an SLA apparatus for forming high viscosity slurries of the present invention;
FIG. 2 is a schematic structural view of a doctor module in an SLA apparatus for forming high viscosity slurries according to the present invention;
fig. 3 is a schematic structural view of the optical system.
In the figure, 1 is an optical system, 2 is a forming chamber;
3. the scraper module comprises 3-1 parts of a scraper bracket, 3-2 parts of a scraper mounting frame, 3-3 parts of a cylinder, 3-4 parts of a push plate, 3-5 parts of a scraper and 3-6 parts of a screw;
4. high-viscosity slurry, 5, a lifting platform a, 6, a feeding bin, 7, a forming bin, 8, a receiving bin and 9, a lifting platform b.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
The utility model is used for fashioned SLA equipment of high viscosity thick liquids, as shown in figure 1, including shaping room 2, the top of shaping room 2 is provided with the laser through-hole, and optical system 1 is installed at the top of laser through-hole, and the bottom of shaping room 2 has set gradually feeding bin 6, shaping storehouse 7 and has received feed bin 8, is provided with lift platform a5 in the feeding bin 6, is provided with lift platform b9 in the shaping storehouse 7, and the laser through-hole is just to lift platform b9, be provided with scraper module 3 in the shaping room 2, optical system 1, scraper module 3, lift platform a5 and lift platform b9 all are connected with control system.
As shown in fig. 2, the scraper module 3 comprises a scraper bracket 3-1, a scraper mounting frame 3-2 is installed in one side of the scraper bracket 3-1, and at least two pairs of mounting holes are correspondingly formed in the bodies of the scraper bracket 3-1 and the scraper mounting frame 3-2; one side of the scraper mounting frame 3-2 is provided with at least one cylinder 3-3, the end part of a piston rod of the cylinder 3-3 is provided with a push plate 3-4, the push plate 3-4 is vertical to the body of the scraper mounting frame 3-2 and is parallel to the bottom of the forming chamber 2, a scraper 3-5 is arranged in the body of the scraper mounting frame 3-2 close to the bottom, the cutting edge end of the scraper 3-5 extends out of the bottom of the scraper mounting frame 3-2, the scraper 3-5 is vertical to the push plate 3-4, and a gap is arranged between the scraper 3-5 and the push plate 3-4; the cross section of the push plate 3-4 is rectangular, and the length of the push plate 3-4 is not less than that of the scraper 3-5.
The cross section of the scraper bracket 3-1 is a right-angled triangle, the side surface of one right-angled side of the scraper bracket 3-1 is parallel to the horizontal plane, a groove a matched with the scraper mounting frame 3-2 is arranged towards the body along the bottom of one triangular side surface of the scraper bracket 3-1, and the scraper mounting frame 3-2 is arranged in the groove a; the cross section of the scraper mounting frame 3-2 is rectangular, a groove b matched with the scraper 3-5 is arranged towards the body along the bottom of the scraper mounting frame 3-2, at least two threaded holes a are formed in the groove b, a through hole b corresponding to the threaded holes a is formed in the body of the scraper 3-5, and the scraper 3-5 penetrates through the through hole b and the threaded holes a through a screw 3-6 to be fixed on the scraper mounting frame 3-2; the cross-section of the blades 3-5 is rectangular.
Wherein, the cylinder 3-3 is a micro cylinder, and the cylinder 3-3 comprises any one of a double-acting cylinder and a single-acting spring press-back cylinder; the end part of a piston rod of the air cylinder 3-3 is provided with an internal thread, the push plate 3-4 is provided with a countersunk hole c, the internal thread and the countersunk hole c are matched with a countersunk screw, and the push plate 3-4 penetrates through the countersunk hole c through the countersunk screw to be connected with the piston rod of the air cylinder 3-3.
The side-mounting of lift platform a5 has sealed felt a, and felt a hugs closely the inner wall of pay-off storehouse 6, and the hollow mounting bracket a of rectangle is installed to lift platform a 5's bottom, is provided with lead screw a in the mounting bracket a, and the one end that lift platform a5 was kept away from to lead screw a is connected with screw nut, and lead screw a stretches out mounting bracket a bottom, and is connected with servo motor a's axle through shaft coupling a.
Sealed felt b is installed to lift platform b 9's side, and the inner wall of storehouse 7 that takes shape is hugged closely to felt b, and the hollow mounting bracket b of rectangle is installed to lift platform b 9's bottom, is provided with lead screw b in the mounting bracket b, and the one end that lift platform b9 was kept away from to lead screw b is connected with screw nut, and lead screw b stretches out mounting bracket b bottom, and is connected with servo motor b's axle through shaft coupling b, is provided with the baffle between feeding bin 6 and the storehouse 7 that takes shape.
The utility model discloses an effect of essential element is as follows respectively in SLA equipment for high viscosity thick liquids take shape:
scraper carrier 3-1: a scraper device for SLA equipment is arranged on a synchronous belt pressing plate of a transmission mechanism through a mounting hole, and is driven to horizontally move under the movement of a synchronous belt, so that the purposes of feeding and uniformly spreading materials by a scraper 3-5 are achieved;
scraper mounting rack 3-2: the scraper 3-5 is used for mounting and fixing the scraper 3-5, and the position of the scraper 3-5 can be adjusted according to actual conditions so as to achieve the purpose of uniformly smearing high-viscosity slurry on the lifting platform b 9;
and 3, cylinders 3-3: the utility model adopts two single-acting spring press-back cylinders, the two cylinders are controlled by the same solenoid valve, can ensure simultaneous on-off and synchronous movement, and can adjust the moving speed of the piston rod of the cylinder through the speed adjusting valve, thereby driving the push plate 3-4 to push the high-viscosity slurry adhered on the scraper 3-5 to the forming base material arranged on the lifting platform b 9;
3-5 of a scraper: the slurry is used for pushing the high-viscosity slurry onto a forming base material, and is uniformly smeared to prepare for curing and forming the material;
screws 3-6: the scraper 3-5 is fixed on the scraper mounting frame 3-2 by the screw 3-6, so that the scraper 3-5 can be used for leveling the high-viscosity slurry to the required thickness.
The feeding bin 6 is internally provided with a lifting platform a 5: before printing, sufficient high-viscosity slurry 4 is stored in a feeding bin 6, and a control system controls a lifting platform a5 to move upwards for feeding; the material conveying ratio is controlled by controlling the upward moving distance of the lifting platform a 5; the sealing felt a on the lifting platform a5 blocks the high-viscosity slurry 4 on the upper surface of the lifting platform a 5;
the bottom of the lifting platform a5 is provided with a rectangular hollow mounting frame a, the inner side of the feeding bin 6 is provided with a linear guide rail with a sliding block, and the rectangular hollow mounting frame a is connected with the sliding block through a screw; the control system drives the motor a to rotate, the screw rod a converts the rotation of the motor a into the up-and-down movement of the hollow mounting rack a, and then the lifting platform a5 is driven to move up and down.
The forming bin 7 is internally provided with a lifting platform b 9: the control system controls the paving thickness and the forming thickness of each layer through the descending distance of the lifting platform b 9; the sealing felt b on the lifting platform b9 blocks the high-viscosity slurry 4 on the upper surface of the lifting platform b 9;
the bottom of the lifting platform b9 is provided with a rectangular hollow mounting rack b, the inner side of the forming bin 7 is provided with a linear guide rail with a slide block, and the rectangular hollow mounting rack b is connected with the slide block through a screw; the control system drives the motor b to rotate, the screw rod b converts the rotation of the motor b into the up-down movement of the hollow mounting rack a, and then the lifting platform b9 is driven to move up and down.
The optical system 1: as shown in fig. 3, the device comprises a laser, a laser fiber, a light guide system and an optical scanning system, wherein laser emitted by the laser is conducted to the light guide system through the laser fiber and then conducted to the optical scanning system at the top of the forming chamber 2 through the light guide system, and the control system controls the deflection movement of light beams in the optical scanning system according to the section information of each layer of high-viscosity slurry 4 on the forming base material to expose the high-viscosity slurry 4.
The utility model is used for scraper module 3's theory of operation in the fashioned SLA equipment of high viscosity thick liquids as follows:
as shown in fig. 2, the doctor blade 3-5 is mounted on the doctor mounting frame 3-2 by means of screws 3-6; then the push plate 3-4 is arranged on a piston rod of the air cylinder 3-3 through a sunk screw, and a gap (generally not more than 0.1mm) is left between the scraper 3-5 and the push plate 3-4; installing a scraper device for SLA equipment on a synchronous belt pressing plate of a transmission mechanism through an installation hole on a scraper bracket 3-1, connecting an air cylinder 3-3 with a compressed air source, testing and adjusting a speed regulating valve to a proper air inlet speed, and adjusting the moving speed of a push plate through the speed regulating valve to ensure that the moving speed of the push plate 3-4, the moving speed of the scraper 3-5 and the position of the scraper 3-5 (the moment when an electromagnetic valve is opened) are coordinated and optimal; the optical system 1 is over against the lifting platform b9 through the laser through hole, the feeding bin 6 of the SLA equipment pushes the high-viscosity slurry to the lifting platform b9 through the lifting platform a5, the scraper device is driven to horizontally move on the lifting platform b9 under the rotation of the synchronous belt, so as to level the high-viscosity slurry, when the scraper 3-5 moves to the optimal position, the electromagnetic valve of the air cylinder 3-3 is opened, the push plate 3-4 is controlled through the piston rod to push down the high-viscosity slurry on the scraper 3-5, the scraper 3-5 levels the high-viscosity slurry at the same time until the piston rod of the air cylinder 3-3 reaches the maximum stroke and reaches the receiving bin 8 of the SLA equipment, the electromagnetic valve is closed, the piston rod of the air cylinder 3-3 is recovered to drive the push plate 3-4 to the initial position, at the moment, the optical system carries out exposure scanning on the high-viscosity slurry layer, after the printing is finished, the synchronous belt drives the scraper device to the initial position, and the operation is repeated in a circulating mode until the high-viscosity slurry on the lifting platform b9 is printed.
The utility model discloses still relate to the control method that the thick liquids take shape, adopt above-mentioned SLA equipment that is used for high viscosity thick liquids to take shape, specifically implement according to following step:
step 1, pouring the high-viscosity slurry 4 into a lifting platform a5 of a feeding bin 6, and filling the upper surface of the high-viscosity slurry 4 to be flat, wherein the upper surface of the high-viscosity slurry 4 is slightly lower than a bin opening of the feeding bin 6;
and 6, controlling the lifting platform b9 to move downwards to be parallel to the bottom surface of the forming chamber 2, then controlling the scraper module 3 to move to the initial position, repeating the steps 3-5 until the forming of the part is completed, and taking out the part.
The utility model is used for SLA equipment that high viscosity thick liquids take shape, its advantage lies in:
(1) the SLA equipment for forming the high-viscosity slurry of the utility model has the advantages that the feeding bin 6, the forming bin 7 and the receiving bin 8 are separately arranged, so that the influence of redundant slurry on the forming of the high-viscosity slurry 4 is avoided, and the risk of slurry pollution is reduced;
(2) the scraper module 3 of the utility model has the function of pushing material downwards automatically, thereby not only avoiding the situation that the lifting platform b9 is lack of material due to the high-viscosity slurry 4 being bonded on the scrapers 3-5, but also realizing the purpose of paving the high-viscosity slurry 4 on the lifting platform b9 evenly and flatly; through setting up suitable pay-off and comparing, really realize pay-off as required, can not cause the waste because of overfeeding.
(3) The moving speed, the moving distance and the stopping position of the scrapers 3-5, the lifting platform a5 and the lifting platform b9 can be adjusted through a control system, and automation of 3D printing is achieved.
Claims (9)
1. The SLA equipment for forming the high-viscosity slurry is characterized by comprising a forming chamber (2), wherein a feeding bin (6), a forming bin (7) and a receiving bin (8) are sequentially arranged at the bottom of the forming chamber (2), a lifting platform a (5) is arranged in the feeding bin (6), a lifting platform b (9) is arranged in the forming bin (7), a scraper module (3) is arranged in the forming chamber (2), and the scraper module (3), the lifting platform a (5) and the lifting platform b (9) are all connected with a control system.
2. The SLA apparatus for the formation of high viscosity slurries according to claim 1, characterized in that the scraper module (3) comprises a scraper carrier (3-1), a scraper mounting frame (3-2) is mounted in one side of the scraper carrier (3-1), at least one cylinder (3-3) is provided in one side of the scraper mounting frame (3-2), a push plate (3-4) is provided at the end of the piston rod of the cylinder (3-3), the push plate (3-4) is perpendicular to the body of the scraper mounting frame (3-2) and parallel to the horizontal plane, a scraper (3-5) is provided in the body of the scraper mounting frame (3-2) near the bottom, the edge end of the scraper (3-5) protrudes out of the bottom of the scraper mounting frame (3-2), the scraper (3-5) and the push plate (3-4) are perpendicular to each other, a gap is arranged between the scraper (3-5) and the push plate (3-4).
3. The SLA equipment for the formation of high viscosity slurries according to claim 2, characterized in that the cross section of the doctor blade carrier (3-1) is a right triangle, the side of one of the right sides of the doctor blade carrier (3-1) is parallel to the horizontal plane, a groove a matching with the doctor blade mounting bracket (3-2) is provided to the body along the bottom of the doctor blade carrier (3-1), the doctor blade mounting bracket (3-2) is mounted in the groove a, and the bodies of the doctor blade carrier (3-1) and the doctor blade mounting bracket (3-2) are correspondingly provided with at least two pairs of mounting holes.
4. The SLA apparatus for the formation of high viscosity slurries according to claim 3, characterized in that the blade mounting frame (3-2) is rectangular in cross section, that a groove b matching the blade (3-5) is provided to the body along the bottom of the blade mounting frame (3-2), that at least two threaded holes a are provided in the groove b, that the body of the blade (3-5) is provided with through holes b corresponding to the threaded holes a, and that the blade (3-5) is fixed to the blade mounting frame (3-2) by means of screws (3-6) passing through the bolt holes b and the threaded holes a.
5. An SLA equipment for shaping high viscosity pulp according to claim 2 or 4, characterised in that the cross-section of the push plate (3-4) is rectangular, the length of the push plate (3-4) being not less than the length of the blade (3-5).
6. The SLA equipment for high-viscosity slurry forming according to claim 2, characterized in that the cylinder (3-3) is a micro cylinder, and the cylinder (3-3) comprises any one of a double acting type cylinder and a single acting spring press-back type cylinder.
7. The SLA apparatus for the forming of high viscosity slurries according to claim 6, characterized in that the end of the piston rod of the cylinder (3-3) is provided with an internal thread, the push plate (3-4) is provided with a counter bore c, both the internal thread and the counter bore c are matched with a counter screw, and the push plate (3-4) is connected with the piston rod of the cylinder (3-3) by the counter screw through the counter bore c.
8. The SLA equipment for forming high-viscosity slurry according to claim 1, wherein a sealing felt a is mounted on the side surface of the lifting platform a (5), the felt a is tightly attached to the inner wall of the feeding bin (6), a rectangular hollow mounting frame a is mounted at the bottom of the lifting platform a (5), a screw rod a is arranged in the mounting frame a, one end of the screw rod a, far away from the lifting platform a (5), is connected with a screw rod nut, the screw rod a extends out of the bottom of the mounting frame a, and is connected with a shaft of a servo motor a through a coupling a.
9. The SLA equipment for forming high-viscosity slurry according to claim 8, wherein a sealing felt b is installed on the side surface of the lifting platform b (9), the felt b is tightly attached to the inner wall of the forming bin (7), a rectangular hollow mounting frame b is installed at the bottom of the lifting platform b (9), a screw rod b is arranged in the mounting frame b, one end, far away from the lifting platform b (9), of the screw rod b is connected with a screw rod nut, the screw rod b extends out of the bottom of the mounting frame b and is connected with a shaft of a servo motor b through a coupling b, and a partition plate is arranged between the feeding bin (6) and the forming bin (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201920814410.8U CN210706050U (en) | 2019-05-31 | 2019-05-31 | SLA equipment for forming high-viscosity slurry |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920814410.8U CN210706050U (en) | 2019-05-31 | 2019-05-31 | SLA equipment for forming high-viscosity slurry |
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| CN210706050U true CN210706050U (en) | 2020-06-09 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110385854A (en) * | 2019-05-31 | 2019-10-29 | 西安铂力特增材技术股份有限公司 | For the SLA equipment of highly viscous slurry forming and the control method of slurry forming |
| CN113799385A (en) * | 2021-08-27 | 2021-12-17 | 西安理工大学 | Resin-based composite material large-area photocuring 3D printer |
-
2019
- 2019-05-31 CN CN201920814410.8U patent/CN210706050U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110385854A (en) * | 2019-05-31 | 2019-10-29 | 西安铂力特增材技术股份有限公司 | For the SLA equipment of highly viscous slurry forming and the control method of slurry forming |
| CN113799385A (en) * | 2021-08-27 | 2021-12-17 | 西安理工大学 | Resin-based composite material large-area photocuring 3D printer |
| CN113799385B (en) * | 2021-08-27 | 2023-08-18 | 西安理工大学 | Large-area photo-curing 3D printer for resin matrix composite material |
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