阅读说明：本技术 一种光固化3d打印机 (Photocuring 3D printer ) 是由 浮燕 赵喆 白海通 王操 于 2021-09-18 设计创作，主要内容包括：本发明涉及3D打印技术领域,且公开了一种光固化3D打印机,安装内腔的中部固定安装有凹透镜,顶部固定安装有凸透镜,液槽底部的中间固定安装有与凸透镜表面贴合的底膜,底座内部的背面固定安装有液压装置,液槽底部呈环状均匀开设有落料口,底座顶端位于落料口底部位置开设有与其对应的集料槽,滑座位于储料槽顶部位置开设有与其连通的导液腔,液槽的内圈开设有导液环槽,导柱的外圈活动套接有浮环,调节腔的中部固定安装有电阻杆,电阻杆外圈活动套接有具有磁性的导电滑环,通过透镜组合适配液槽底部结构的改变,并且利用浮环控制液压装置变化调节液槽内部溶液高度,提高了打印效率和质量。(The invention relates to the technical field of 3D printing, and discloses a photocuring 3D printer, wherein a concave lens is fixedly arranged in the middle of an installation inner cavity, a convex lens is fixedly arranged at the top of the installation inner cavity, a bottom membrane attached to the surface of the convex lens is fixedly arranged in the middle of the bottom of a liquid tank, a hydraulic device is fixedly arranged on the back surface of the interior of a base, the bottom of the liquid tank is uniformly provided with a ring-shaped material discharge port, the top end of the base is provided with a material collecting tank corresponding to the material discharge port, a liquid guide cavity communicated with a sliding seat is arranged at the top of a material storage tank, the inner ring of the liquid tank is provided with a liquid guide ring groove, a floating ring is movably sleeved on the outer ring of the guide post, a resistance rod is fixedly arranged in the middle of an adjusting cavity, a magnetic conductive sliding ring is movably sleeved on the outer ring of the resistance rod, the bottom structure of the liquid tank is properly matched through a lens group, and the floating ring is used for controlling the hydraulic device to change of the height of a solution in the liquid tank, the printing efficiency and quality are improved.)

1. The utility model provides a photocuring 3D printer, includes base (1), its characterized in that: the back fixed mounting at base (1) top has slide (2), installation inner chamber (101) has been seted up at the middle part of base (1), the bottom fixed mounting of installation inner chamber (101) has light source (4), the middle fixed mounting of installation inner chamber (101) has concave lens (5), the top fixed mounting of installation inner chamber (101) has convex lens (6), the middle fixed mounting of base (1) top surface has cistern (3), the middle fixed mounting of cistern (3) bottom has basement membrane (7) with convex lens (6) surface laminating, the back fixed mounting of base (1) inside has hydraulic means (11), spout (201) has been seted up in the front of slide (2), hydraulic pressure groove (202) with hydraulic means (11) intercommunication has been seted up to the bottom of spout (201), slider (8) has been cup jointed with hydraulic pressure groove (202) inside activity to spout (201), the front of slider (8) is through connecting rod fixedly connected with levelling device (9), the bottom fixed mounting of levelling device (9) has forming platform board (10), cistern (3) bottom is cyclic annular and has evenly seted up blanking mouth (302), base (1) top is located blanking mouth (302) bottom position and has seted up collection silo (102) rather than corresponding, communicate each other between collection silo (102) bottom.

2. The photocuring 3D printer of claim 1, wherein: the base (1) is internally provided with a storage trough (103) between an installation inner cavity (101) and a hydraulic device (11), the bottom of the storage trough (103) is communicated with the hydraulic device (11) and a piston (13) is movably sleeved at the communicated position, a liquid guide cavity (203) communicated with the storage trough (103) is arranged at the top of the storage trough (103) and is arranged at the top of the storage trough (2), a first vent hole (204) is arranged at the top of the liquid guide cavity (203), a liquid guide ring groove (301) is arranged at the inner ring of the liquid tank (3), a liquid inlet (303) communicated with the liquid guide cavity (203) is arranged at the middle part of the back of the liquid guide ring groove (301), a second vent hole (304) is arranged at the top of the liquid guide ring groove (301), a guide pillar (14) is fixedly arranged in the liquid guide cavity (203), a floating ring (15) is sleeved at the movable outer ring of the guide pillar (14), and an annular magnet (17) is fixedly arranged at the inner ring of the floating ring (15), an adjusting cavity (1401) is formed in the guide pillar (14), a resistance rod (16) is fixedly mounted in the middle of the adjusting cavity (1401), and a magnetic conductive slip ring (18) is movably sleeved on the outer ring of the resistance rod (16).

3. A photocuring 3D printer according to claim 2, characterized in that: the edge of blanking mouth (302) open-top is located the outer lane edge of basement membrane (7) just, fixed mounting has valve (12) between collecting groove (102) and stock chest (103), concave lens (5) and convex lens (6) center department equal and concave lens (5) and convex lens (6) distance between the focus of two times of distance to the distance of focus separately.

4. A photocuring 3D printer according to claim 2, characterized in that: the top of the conductive slip ring (18) and the bottom of the resistance rod (16) are connected into a circuit, the circuit controls the hydraulic pressure of the hydraulic device (11) to the bottom of the storage tank (103), the resistance balance hydraulic device (11) in the whole circuit does not act after the floating ring (15) reaches a specified height, the hydraulic device (11) recovers the hydraulic pressure in the storage tank (103) when the floating ring (15) is higher than the specified height, and the hydraulic device (11) increases the hydraulic pressure into the storage tank (103) when the floating ring (15) is lower than the specified height.

5. A photocuring 3D printer according to claim 2, characterized in that: the height that highly is higher than drain ring groove (301) bottom opening part of inlet (303), the inner circle fixed mounting in drain ring groove (301) bottom has the inner circle top arch of annular retaining ring and annular retaining ring.

Technical Field

The invention relates to the technical field of 3D printing, in particular to a photocuring 3D printer.

Background

The present scientific and technological development for the plastic molding method mode becomes more and more, wherein utilize the fashioned plastic model of 3D printer to be the commonly used one, photocuring 3D printer shaping precision in the 3D printer is higher, surface effect is better, it is very suitable to be used for producing some working of plastics of high accuracy, its principle is that the laser that utilizes the light source to send according to the graphic structure acts on photosensitive resin and makes it solidify the shaping on the shaping board, though its printing fashioned plastic precision is high, effectual, but still has certain shortcoming:

1. when photocuring printing plastics, the formed plastic parts are basically small and fine structures, and the internal driving structure is utilized to drive the forming platform plate to move upwards so as to gradually stretch out a model during printing, but in actual use, the damage is inevitable during forming the plastic model, so that small particles of cured resin are left in the liquid tank, and then the particles need to be picked out for continuous printing, and the particles are difficult to find, so that a large amount of time and energy are wasted, the 3D printing speed is slow, and the printing efficiency is further reduced;

2. utilize photocuring 3D printer shaping plastics, photosensitive resin along with in the cistern solidifies gradually and will make the photosensitive resin solution in the cistern less in being separated from the stock chest by the shaping platform slab band, thereby just need to supply photosensitive resin solution to its inside, current mostly adopt directly to continuous slow supply in the cistern, but in actual work, the shaping platform slab is along with one deck structure makes progress the lifting take the altitude and carries out a location earlier, then follow bottom slow lifting upwards again, the condition that reciprocates can also appear in its in-process, if the replenishment photosensitive resin solution that does not stop can cause the liquid level in the cistern to be high for a moment the low condition, not only cause the overflow of solution easily still can make fashioned plastic model not good, the printing quality has been reduced.

Disclosure of Invention

Aiming at the defects of the background technology, the invention provides the photocuring 3D printer which has the advantages of high printing quality, high efficiency and good effect, and solves the problems in the background technology.

The invention provides the following technical scheme: a photocuring 3D printer comprises a base, wherein a slide seat is fixedly installed on the back of the top of the base, an installation inner cavity is formed in the middle of the base, a light source is fixedly installed at the bottom of the installation inner cavity, a concave lens is fixedly installed in the middle of the installation inner cavity, a convex lens is fixedly installed at the top of the installation inner cavity, a liquid tank is fixedly installed in the middle of the top surface of the base, a bottom membrane attached to the surface of the convex lens is fixedly installed in the middle of the bottom of the liquid tank, a hydraulic device is fixedly installed on the back of the interior of the base, a sliding groove is formed in the front of the slide seat, a hydraulic groove communicated with the hydraulic device is formed in the bottom of the sliding groove, a sliding block is movably sleeved in the sliding groove and the interior of the hydraulic groove, a leveling device is fixedly connected to the front of the sliding block through a connecting rod, and a forming platform plate is fixedly installed at the bottom of the leveling device, the bottom of the liquid tank is annular and is uniformly provided with a blanking port, the top end of the base is positioned at the bottom of the blanking port and is provided with a material collecting groove corresponding to the blanking port, and the bottoms of the material collecting grooves are mutually communicated.

Preferably, a storage tank is arranged between the installation inner cavity and the hydraulic device in the base, the bottom of the storage tank is communicated with the hydraulic device, a piston is movably sleeved at the communication position, the sliding seat is positioned at the top of the storage tank and is provided with a liquid guide cavity communicated with the storage tank, the top of the liquid guide cavity is provided with a first vent hole, the inner ring of the liquid groove is provided with a liquid guide ring groove, the middle part of the back of the liquid guide ring groove is provided with a liquid inlet communicated with the liquid guide cavity, the top of the liquid guide ring groove is provided with a second vent hole, the inside of the liquid guide cavity is fixedly provided with a guide post, the outer ring of the guide post is movably sleeved with a floating ring, the inner ring of the floating ring is fixedly provided with an annular magnet, the adjusting cavity is formed in the guide pillar, a resistance rod is fixedly mounted in the middle of the adjusting cavity, and a magnetic conductive slip ring is movably sleeved on the outer ring of the resistance rod.

Preferably, blanking mouth open-top's edge is located the outer lane edge of basement membrane just, fixed mounting has the valve between collecting groove and the stock chest, concave lens and convex lens center department equal and the distance between concave lens and the convex lens is twice focus distance to the distance of focus separately.

Preferably, the top of the conductive slip ring and the bottom of the resistance rod are connected into a circuit, the circuit controls the hydraulic pressure of the hydraulic device on the bottom of the storage tank, the resistance balance hydraulic device in the whole circuit does not act after the floating ring reaches the specified height, the hydraulic device recovers the hydraulic pressure in the storage tank when the floating ring is higher than the specified height, and the hydraulic device increases the hydraulic pressure into the storage tank when the floating ring is lower than the specified height.

Preferably, the liquid inlet is higher than the opening at the bottom of the liquid guide ring groove, an annular check ring is fixedly mounted on the inner ring at the bottom of the liquid guide ring groove, and the top of the inner ring of the annular check ring is raised.

The invention has the following beneficial effects:

1. through the cooperation work that adopts concave lens and convex lens and constitute the curved surface bottom the cistern, compare in prior art, the light that has guaranteed the light source by utilizing concave lens and convex lens's light transmissivity quality still keeps the straight line to shine, the structure that has changed the cistern bottom simultaneously more does benefit to and retrieves the position all around the basement membrane with the solidification resin granule that drops in-process of printing, and in the mobility along with photosensitive resin solution finally is collected the groove that gathers materials, the processing time of solution in the cistern has been reduced like this, more do benefit to the efficiency that improves printing, the meniscus lens setting of bottom can use parallel light source and some light sources simultaneously, the suitability has been increased.

2. Through the inside resin solution feeding condition that sets up hydraulic means and control between stock chest and the cistern at the base, compare in prior art, utilize the change of floating ring altitude in hydraulic groove to embody the change of liquid level height in the cistern, realize hydraulic means's control according to the change of resistance current in the circuit, and then realized when the liquid level height changes in the cistern, real-time adjustment is supplemented and is extracted in the stock chest, the liquid level height stability of photosensitive resin solution in 3D printing process has been guaranteed, and then the plastics product quality that makes print is better.

Drawings

FIG. 1 is an overall front and half sectional view of the structure of the present invention;

FIG. 2 is a side, semi-sectional view of the present invention in its entirety;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 4 is a cross-sectional view taken along line B-B of FIG. 1;

fig. 5 is an enlarged view of fig. 2 at C.

In the figure: 1. a base; 101. installing an inner cavity; 102. a material collecting groove; 103. a storage tank; 2. a slide base; 201. a chute; 202. a hydraulic tank; 203. a drainage cavity; 204. a first vent hole; 3. a liquid bath; 301. a liquid guide ring groove; 302. a blanking port; 303. a liquid inlet; 304. a second vent hole; 4. a light source; 5. a concave lens; 6. a convex lens; 7. a base film; 8. a slider; 9. a leveling device; 10. forming a platform plate; 11. a hydraulic device; 12. a valve; 13. a piston; 14. a guide post; 1401. an adjustment chamber; 15. a floating ring; 16. a resistance rod; 17. a ring magnet; 18. a conductive slip ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to the attached drawings 1-3, a photocuring 3D printer comprises a base 1, a sliding seat 2 is fixedly installed on the back of the top of the base 1, an installation inner cavity 101 is formed in the middle of the base 1, a light source 4 is fixedly installed at the bottom of the installation inner cavity 101, a concave lens 5 is fixedly installed in the middle of the installation inner cavity 101, a convex lens 6 is fixedly installed at the top of the installation inner cavity 101, a liquid tank 3 is fixedly installed in the middle of the top of the base 1, a bottom membrane 7 attached to the surface of the convex lens 6 is fixedly installed in the middle of the bottom of the liquid tank 3, a hydraulic device 11 is fixedly installed on the back of the base 1, a sliding groove 201 is formed in the front of the sliding seat 2, a hydraulic groove 202 communicated with the hydraulic device 11 is formed in the bottom of the sliding groove 201, a sliding block 8 is movably sleeved in the sliding groove 201 and the hydraulic groove 202, a leveling device 9 is fixedly connected to the front of the sliding block 8 through a connecting rod, and a forming platform plate 10 is fixedly installed at the bottom of the leveling device 9, the bottom of the liquid tank 3 is uniformly provided with a ring-shaped blanking port 302, the top end of the base 1, which is positioned at the bottom of the blanking port 302, is provided with a corresponding material collecting groove 102, the bottoms of the material collecting grooves 102 are communicated with each other, the solidified resin in each material collecting groove 102 is collected together to facilitate subsequent discharge, and simultaneously, the photosensitive resin solution can be recycled into the material storage groove 103 when the valve 12 is opened, the interior of the base 1, which is positioned between the installation inner cavity 101 and the hydraulic device 11, is provided with the material storage groove 103, the bottom of the material storage groove 103 is communicated with the hydraulic device 11 and is movably sleeved with the piston 13 at the communication position, the slide base 2, which is positioned at the top of the material storage groove 103, is provided with a liquid guide cavity 203 communicated with the slide base, the top of the liquid guide cavity 203 is provided with a first vent hole 204, the inner ring of the liquid guide groove 3 is provided with a liquid guide ring groove 301, the middle part of the back of the liquid guide ring groove 301 is provided with a liquid inlet 303 communicated with the liquid guide cavity 203, and the top of the liquid guide ring groove 301 is provided with a second vent hole 304, guide pillar 14 is fixedly installed in drainage cavity 203, the outer lane activity of guide pillar 14 has cup jointed the floating ring 15, the inner circle fixed mounting of floating ring 15 has annular magnet 17, regulation chamber 1401 has been seted up to guide pillar 14's inside, the middle part fixed mounting of regulation chamber 1401 has resistance pole 16, resistance pole 16 outer lane activity has cup jointed the electrically conductive sliding ring 18 that has magnetism, can drive annular magnet 17 when floating ring 15 floats from top to bottom and utilize magnetic attraction to attract electrically conductive sliding ring 18 to slide from top to bottom along resistance pole 16 and the resistance change in the regulating circuit simultaneously, the change that utilizes resistance just can realize hydraulic means 11 to the hydraulic pressure force control in the stock chest 103.

Referring to fig. 2 and 4, the edge of the top opening of the blanking port 302 is just located at the edge of the outer ring of the bottom film 7, the valve 12 is fixedly installed between the material collecting tank 102 and the material storage tank 103, the distances from the centers of the concave lens 5 and the convex lens 6 to the respective focuses are equal, and the distance between the concave lens 5 and the convex lens 6 is twice the focus distance, so that the light emitted by the light source 4 inside the base 1 is refracted by the concave lens 5 and the convex lens 6 and then emitted in parallel and acts on the forming platform plate 10 to cure the resin, and this structure is designed to be convex at the bottom of the liquid bath 3, so that the cured resin particles, which are damaged or dropped, slide down to the peripheral position and finally fall into the catch tank 102, the continuous printing of the equipment cannot be influenced, and then the valve 12 can be opened to filter and recycle the photosensitive resin solution into the storage tank 103.

Referring to fig. 2 and 5, the top of the conductive slip ring 18 and the bottom of the resistance rod 16 are connected to a circuit, the circuit controls the hydraulic device 11 to apply hydraulic pressure to the bottom of the material storage tank 103, the resistance balance hydraulic device 11 in the whole circuit does not act after the floating ring 15 reaches a predetermined height, the device 11 recovers the hydraulic pressure in the material storage tank 103 when the floating ring 15 is higher than the predetermined height, the hydraulic device 11 increases the hydraulic pressure into the material storage tank 103 when the floating ring 15 is lower than the predetermined height, the current is changed by the resistance change in the circuit, the adjustment of the hydraulic device 11 is controlled by the resistance balance hydraulic device, the photosensitive resin solution in the material storage tank 103 is controlled to be added into or recovered from the liquid tank 3 according to the change of the adjustment hydraulic pressure, so that the height of the floating ring 15 is used to control the stability of the liquid level, and the resin solution can be supplemented and recovered from the material storage tank 103 to the liquid tank 3 according to the hydraulic adjustment when the liquid level does not reach the predetermined height, therefore, the height of the resin solution is basically kept unchanged in the printing process, and the printing quality is improved.

Wherein, the height that highly is higher than drain ring groove 301 bottom opening part of inlet 303, the inner circle fixed mounting in drain ring groove 301 bottom has the inner circle top arch of annular retaining ring and annular retaining ring, guarantees that the solution that comes in from inlet 303 can not assault inside cistern 3, utilizes the inner wall of drain ring groove 301 to play the effect of restriction, limits curing resin to enter into drain ring groove 301 with the retaining ring in the bottom simultaneously, avoids causing the circumstances such as jam.

The working principle is that the light source 4 in the installation cavity 101 is adjusted, the liquid tank 3 is fixedly installed on the top of the base 1, the leveling device 9 is adjusted to a proper position, a plastic model program to be printed is input into a printer through a computer or a U disk, equipment is started, the hydraulic device 11 drives the sliding block 8 to move through hydraulic pressure in the hydraulic tank 202, the forming platform plate 10 is driven to move through the leveling device 9, the forming platform plate 10 is firstly immersed into the liquid tank 3, then laser emitted by the light source 4 is transmitted through the concave lens 5 and the convex lens 6 and irradiates on the forming platform plate 10, photosensitive resin solution in the liquid tank 3 is solidified on the forming platform plate 10 to form a certain shape under the action of the laser, and when partial solidified resin falls off along with solidification, the bottom film 7 falls down to the periphery along the gradient of the surface of the bottom film and finally enters the material collecting tank 102 through the material falling port 302, the device is then used without picking out the cured resin particles;

when the resin solution in the liquid tank 3 is driven to have the condition of fluctuating liquid level along with the movement of the forming platform plate 10 in the printing process, when the liquid level becomes high, the floating ring 15 in the liquid guide cavity 203 is enabled to float upwards through the communication of the liquid inlet 303, and the conductive slip ring 18 inside the guide post 14 is driven to slide upwards through the annular magnet 17, at the moment, the resistance in the circuit becomes high and current becomes low, the hydraulic device 11 is enabled to control the hydraulic contraction in the storage tank 103 through system adjustment, the piston 13 is driven to move to increase the internal volume of the storage tank 103 and drive the resin solution in the liquid tank 3 to reduce until the liquid level is recovered to the specified liquid level, when the liquid level in the liquid tank 3 is lower than the specified liquid level, the hydraulic device 11 is driven to increase the pressure in the storage tank 103 through resistance current adjustment so as to make the resin solution inside supplement to the liquid tank 3, and the floating ring 15 is used to control the hydraulic device 11 to realize the feeding and recovery condition of the resin solution in the liquid tank 3, the stability of the liquid level in the liquid tank 3 during printing is ensured.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.